Claims:. A blowing valve for blow molding machine consisting of
-a pilot valve block [20] having integral pilot main ports [20.8A, B] on lateral side, having pilot pressure inlet ports [20.1,20.2,20.3,20.4,20.5,20.7],
- a set of fast switching valves [21] are mounted above the pilot valve block [20] in such a way by fast switching valve mounting holes [20.9] & mounting screws [21.1],
-a piston block [10] having low blow piston cavity [10.1], blow piston cavity [10.2], Recovery piston Cavity [10.3], Exhaust Piston Cavity [10.4], Clamping Piston Cavity [10.5], and vent holes[10.7a, 10.7b, 10.7c, 10.7d, 10.7e]for enabling and preventing the vacuum inside the piston cavities and free flow of the pistons.
-a pilot block [20] is assembled over the piston block [10],
- a manifold block [1] having a low blow cavity [1.1], blow cavity [1.2], Air recovery cavity [1.4], Exhaust cavity [1.5], and Clamping Cavity [1.6] are the inlet ports and a transfer port [1.3] interconnects the working pressure transfer port [10.9] of the piston block [10], Working Ports [1.9A, B & 1.10A, B] which supply the fluid to the blowing stations and the low-pressure inlet port [1.7A, B], High-Pressure Inlet Port [1.8A, B], Preblow NRV Seating land [1.15] Air Recovery NRV Seating Land [1.16] and Air Distributor cum Guide Seating Land [1.17], Integral Working Port [1.11] through partial transfer ports [1.3,10.9] interconnecting the low blow, blow, recovery and exhaust ports [EXT] [10.11A, B], Blind Fastener Mounting Thread [1.12] Clamping Inlet Port [1.13 A, B] Fastener Mounting Thread[1.14],
-a control piston block [17] having circumferential flow path [17.4],
-a clamping piston block [14] having a flow clearance groove [14.4] around the smaller profile of the clamping piston block [14] for smooth passage of fluid flow and a tapped hole to connect the air distributor cum guide [9] below the clamping piston block [14].
-a, non-return valve block NRV [4] having NRV vent [4.1], NRV Guide Wall [4.2], and an outer NRV Vent [4.3] is placed between Preblow NRV Seating land [1.15] air recovery NRV Seating Land [1.16],
- a set of guided nozzles [5] and non-guided nozzles [6] having nozzle flow paths [5.3] and [6.2] respectively to transfer the fluid from a manifold block [1] to piston Block [10],
Wherein, fluid is admitted into the valve cavity internally flow through ports [4.1] & Flow past [4.3] through the internal flank of the piston block [17], the air is admitted using contour path,
Wherein the control piston block (17) arrangement the fluid passes axially through the inner side of the piston (17) and fluid exit releases through the drilled holes on the circumference of the piston block and vice-versa,
Wherein the Control Piston Block [17] having a larger profile on one end and a smaller profile on the other end,
wherein the smaller profile of the control piston block [17] is axially drilled for multiple drilled holes thereby a circumferential Flow Path [17.4] is made,
Wherein the control piston block [17] is made using Control Piston O-ring & seal Groove2 [17.3] Control Piston Oring & seal Groove 3 [17.5] on either side of the circumferentially drilled holes,
wherein the control piston block [17] is controlled by a pilot force acting on the piston top land [17.1] to actuate the entire control piston block[17]by the Control Piston Oring & seal Groove 1 [17.2] thereby air leak is prevented and utilizes the pilot force to resist the higher pressure acting on another side of the piston,

2. The blowing valve for blow molding machine as claimed in claim 1, wherein NRV block [4] is guided axially with the nozzle block which enables the flow path and drift evenly by nozzle block [6][5] having central land [5.2,6.3] to distribute the air eventually through ports [6.2][5.3] thereby resisting reversal flow by the NRV Seat [4.4].
3. The blowing valve for blow molding machine as claimed in claim 1, wherein the said control piston block (17), clamping piston block [14], NRV] 4, Air Distributor Cum Guide [9] are made up of polymeric material to enhance the operation of valve with faster response.
4. The blowing valve for the blow molding machine as claimed in claim 1, wherein the said individual valve cavities are located close to the blowing station to reduce the volume of blowing air and reduces the expansion and compression of the air during the operation elimination of fittings.
5. The blowing valve for blow molding machine as claimed in claim 1, wherein the said nozzles [5,6] are mounted at the bottom of the Piston block [10] thereby fluid flow passage enriches the lift force and diffuses the air to upsurges the valve lifting turbulence and parallelly improving piston activity.
6. The blowing valve for blow molding machine as claimed in claim 1, wherein the said control piston [17] having a seat [17.7] is resting on piston seating land [5.5] of the guided nozzle [5] and piston seating land [6.4] of non-guided nozzle [6] to make fluid leak arrester.5.5, 6.4 respectively to close the inlet port of the air nozzle [5, 6] with the aid of piston arrangement [17.6] prevents the air leak
7. The blowing valve for blow molding machine as claimed in claim 1, wherein the said exhaust ports [Eext] [10.11A,B] is incorporated a muffler or silencer arrangement to exhaust the air smoothly without noise
8. The blowing valve for the blow molding machine as claimed in claim 1, wherein the said valve is made up of Aluminium alloy composite materials.
9. The blowing valve for blow molding machine as claimed in claim 1, wherein the said clamping piston [9] is having Gliding Projection [9.8] to guide on the walls of the clamping cavity [1.6] acting as a spring [8] retainer reverses the entire clamping piston to its original position.
, Description:FIELD OF INVENTION
This invention is related to a electro-pneumatic blow valve mechanism, particularly a valve mechanism for stretch blow the molding machine more particularly, a valve mechanism for combining the clamping operation of the mold cavity, sequential valve functions of blowing, and non-return valve functions in blowing station of the molding machine.

BACKGROUND OF THE INVENTION
The background of the invention relates to a combined pet blowing valve block arrangement for blowing pet bottles by interchanging the single valves to clamp [CL], pre-blow [LP], blow [HP], recovery [RE], and exhaust [EXT]. The existing distinct valve arrangement requires more space required to mount. The slow response to operating signals is given to the valve mechanism and more energy is required to operate the valve. The existing valve mechanism consumes more high-pressure air and losses occur is more due to sudden variation in size of connections & fittings. A sequence of valve connection tubing itself accumulates more air. So there is a compression and expansion of air due to operating signal and abrupt pressure variations in the manifold within a shorter time duration. And following problems are still faced by the industries.
1. The existing valve for blowing operation doesn’t fulfill the operational needs. It fails and malfunctions at the time of blowing, so there is an intervention in the operational flow process.
2. It does not react faster to the response signal leads to higher productivity time.
3. Frictional losses due to change in cross-sections, bend, elbow & fittings are the major problem in existing valves.
4. The dirt and contaminants in the air stick on the walls of the O-ring or in the valve seat due to vulcanized rubber material or metal with lubricants.
5. The valve with metal parts rub on the sides of the cavity, dirt /corrosion under the diaphragm may cause a leak through the valve seat.
6. Due to heating or cooling and humidification of the valve may get chocked and malfunction of valve and process flow get affected due to improper functioning.
7. The above limitations and complications make us do the invention.

There are many inventions related to a blowing valve for a blow the molding machine, In WO2014123334A1, a blowing valve for plastic container molding. The blowing valve of the present invention comprises: through-holes (31A, 31B, 31C) vertically penetrating the inside of first, second and third pistons (30A, 30B, 30C) provided in a cylinder block, respectively; discharge holes (41, 42, 43) formed in a control block and communicating with first, second and third cylinders(21, 22, 23) to discharge the air in the cylinders; and first, second and third solenoid valves (V1, V2, V3) respectively provided at the upper ends of the discharge holes (41, 42, 43) to selectively open/close the discharge holes (41, 42, 43). According to the aforementioned configuration, the present invention has a simple structure since an additional control pressure for controlling the operation of the pistons is not needed, and enables the opening/closing operation of the valves to be rapidly and precisely carried out since the pistons are operated by highly compressed air.
In WO 2011/042184A2, A blow molding valve (400) is provided. The blow molding valve (400) is adapted to be positioned within a blow molding valve block (401) including a control pressure chamber (408), a process gas chamber (450), and a piston bore (413). The blow molding valve (400) includes a control piston (402) movable within the control pressure chamber (408) and a portion of the piston bore (413), the control piston (402) being in fluid communication with a control pressure supply. A diaphragm (405) is provided and positioned between the process gas chamber (450) and the control piston (402) such that the diaphragm provides a fluid-tight barrier between the process gas chamber (450) and the control piston (402).

ART OF STATE OF BLOWING VALVE
Limitation of Existing System
The existing valve mechanism during operation and maintenance faced frequent problems and does not meet the requirements. The problems such as breakdown, fluttering of the valve, leak through valve seat, noise and pressure drop due to sudden expansion and contraction this makes to do frequent maintenance.
In the existing blowing machines, the major problem is to fix the poppet valves to open and close frequently at higher pressure. Because it damages the valve seat, O-ring and valve stem leak past through valve seal due to that failure may occur at sudden high-pressure operation.
At higher pressure, it fails to hold in the position so it lifts the valve spool valve seat and reversal flow occurs during the sudden impact of pressure at the valve seat.
The valve flutter occurs during the operation and leaks past through the valve seat. The fluttering of valves and enclosed valve operation damages the valve seat during the operation due to the hammering effect of the valve. This leads to the failure of the valve and functional losses. Due to do the sudden impact at the valve seat and piston at higher pressure makes the valve fails to do its function.
The valve stem break due to continuous vibration created due to flow imbalance and valve fluttering also needs more fittings and occupy more space during the valve assembly and mountings. It consumes more electrical energy to operate the valve and heat produced due to the valve operation.

OBJECT OF THE PRESENT INVENTION
The main objective of the present invention is to provide a valve mechanism for combining the clamping operation of the mold cavity, sequential valve functions of blowing, and non-return valve functions in the blowing station of the molding machine.
The other objective of the present invention is to provide a valve mechanism that can reduce time delay and built-up pressure in transfer tubing of the systems, and can reduce the volume of blowing air, expansion, and compression of the air during the operation.
Yet the other objective of the present invention is to provide a faster response to the pressure pilot actuation signal and reducing the consumption of power.
Yet the other objective of the present invention is mounting every single valve located close together so that a significant reduction in switching and Actuation time of the valve operation is achieved.
Another objective of the present invention is to provide a valve mechanism that can exhibit a valve cavity is arranged in the combined blowing block which reduces the operation timing in microseconds which improves the operative and blowing capacity collectively.
The other objective of the present invention is to provide a valve mechanism with a single working integral port for reducing the frictional losses, by which losses that occurred during flow are avoided while blowing operations.

SUMMARY OF THE INVENTION
The present invention is a blowing valve for blow molding machine made up of Aluminium alloy composite materials consisting of a pilot valve block [20] having integral pilot main ports [20.8 A, B] with inlet ports a set of pilot operated valves [21] are mounted above the pilot valve block [20] in such a way to perform fast switching, valve mounting holes [20.9] & mounting screws [21.1] are provided to mount the fast switching valves -a piston block [10] having low blow piston cavity [10.1], blow piston cavity [10.2], Recovery piston Cavity [10.3], Exhaust Piston Cavity [10.4], Clamping Piston Cavity [10.5], and piston air vent holes[10.7a, 10.7b, 10.7c, 10.7d, 10.7e]for enabling and preventing the vacuum inside the piston cavity and free flow of the pistons.
-a pilot block [20] is assembled over the piston block [10], a manifold block [1] with pluralities of inlet ports and a transfer port [1.3] interconnects the working pressure transfer port [10.9] of the piston block [10], and working Ports [1.9A, B & 1.10A, B] which supply the fluid to the blowing stations and the low-pressure inlet port [1.7A, B], High-Pressure Inlet Port [1.8A, B], Preblow NRV Seating land [1.15] Air Recovery NRV Seating Land [1.16] and Air Distributor cum Guide Seating Land [1.17], Integral Working Port [1.11] through partial transfer ports [1.3,10.9] interconnecting the low blow, blow, recovery and exhaust ports [EXT] [10.11A, B]. Blind Fastener Mounting Thread [1.12] Clamping Inlet Port [1.13 A, B] Fastener Mounting Thread[1.14], wherein a control piston block [17] having circumferential flow path [17.4], a clamping piston block [14] having a flow clearance groove [14.4] around the smaller profile of the clamping piston block [14] for smooth passage of fluid flow is made as important embodiment in the invention and a tapped hole to connect the air distributor cum guide [9] below the clamping piston block [14] is fixed. A, non-return valve block NRV [4] having inner NRV vent [4.1], NRV Guide Wall [4.2], and an outer NRV Vent [4.3] is constructed and placed between Preblow NRV Seating land [1.15] air recovery NRV Seating Land [1.16] is another imporatant embodiment.

A set of guided nozzles [5] and non-guided nozzles [6] having nozzle flow paths [5.3] and [6.2] respectively to transfer the fluid from a manifold block [1] to piston Block [10] are made in another embodiment in the invention. Wherein, fluid is admitted into the valve cavity internally flow through ports inner NRV vent [4.1] & Flow past outer NRV vent [4.3] through the internal flank of the control piston block [17], the air is admitted using contour path, Wherein the control piston block (17) arrangement the fluid passes axially through the inner side of the piston (17) and fluid exit releases through the drilled holes on the circumference of the piston block and vice-versa.

The Control Piston Block [17] having a larger profile on one end and a smaller profile on the other end, wherein the smaller profile of the control piston block [17] is axially drilled for multiple drilled holes thereby a circumferential Flow Path [17.4] is made,
Wherein the control piston block [17] is made using Control Piston O-ring & seal Groove2 [17.3] Control Piston Oring & seal Groove 3 [17.5] on either side of the circumferentially drilled holes, also the control piston block [17] is controlled by a pilot force acting on the piston top land [17.1] to actuate the entire control piston block[17]by the Control Piston Oring & seal Groove 1 [17.2] thereby air leak is prevented and utilizes the pilot force to resist the higher pressure acting on another side of the piston,

The NRV block [4] is guided axially with the nozzle block which enables the flow path and drift evenly by nozzle block [6][5] having central land [5.2,6.3] to distribute the air eventually through ports [6.2][5.3] thereby resisting reversal flow by the NRV Seat [4.4]. The control piston block (17), clamping piston block [14], NRV [4], Air Distributor Cum Guide [9] are made up of polymeric material to enhance the operation of valve with faster response. wherein the individual valve cavities are made closer to each other to the blowing station thereby, the volume of blowing air is reduced, expansion and compression of the air during the operation elimination of fittings get reduced.
.
The nozzles [5,6] are mounted at the bottom of the Piston block [10] thereby fluid flow passage enriches the lift force and diffuses the air to upsurges the valve lifting turbulence and parallelly improving piston activity. The control piston block [17] having a control piston seat [17.7] is resting on piston seating land [5.5] of the guided nozzle [5] and piston seating land [6.4] of non-guided nozzle [6] to make fluid leak arresters respectively to close the inlet port of the air nozzle [5, 6] with the aid of axial flow path [17.6] on the control piston block [17] prevents the air leak, and the exhaust ports [EXT] is specially arranged to exhaust the air smoothly without noise and the clamping piston [9] is having Gliding Projection [9.8] to guide on the walls of the clamping cavity [1.6] acting as a spring [8] retainer reverses the entire clamping piston assembly to its original position.

DETAILED DESCRIPTION OF THE DRAWINGS
Fig 1 illustrates an assembled view of the valve
Fig 2 illustrates exploded view of valve proposed embodiment as per the invention
Fig 3 illustrates the flow process sequence of valve blocks
Fig 4 illustrates the flow path
Fig 5 illustrates the pilot port block
Fig 6a, 6b illustrate working ports
Fig 7a, 7b vent holes
Fig 8 illustrates piston block
Fig 9 illustrates the non-guided nozzle
Fig 10 illustrates the guided nozzle
Fig 11 illustrates the non-return valve block
Fig 12 illustrates exploded view of clamping piston assembly
Fig 13 illustrates clamping piston
Fig 14 illustrates halving piston
Fig 15a, 15b illustrate flow processes
Fig 16-18 illustrate the positions of the Control Piston and NRV principal process as indicated

Part Number Part Name
1 Manifold block
1.1 Low blow Cavity
1.2 Blow Cavity
1.3 Transfer Port

1.4 Air Recovery Cavity
1.5 Exhaust Cavity
1.6 Clamping Cavity
1.7A,B Low pressure Inlet port
1.8A,B High Pressure Inlet Port
1.9A,B Working Port
1.10A,B Working Port
1.11 Integral Working Port
1.12 Blind Fastener Mounting Thread
1.13A,B Clamping Inlet Port
1.14 Fastener Mounting Thread
1.15 Preblow NRV Seating land
1.16 Air Recovery NRV Seating Land
1.17 Air Distributor cum Guide Seating Land
2 Nozzle O-ring
3 Transfer port O-ring
4 NRV
4.1 Inner NRV Vent
4.2
NRV Guide Wall
4.3 Outer NRV Vent
4.4 NRV Seat
5 Guide Nozzle
5.1 Nozzle O-ring Groove
5.2 Central land
5.3 Nozzle flow path
5.4 Nozzle Guide
5.5 Piston seating Land
6 Non-Guided Nozzle
6.1 Nozzle O-ring Groove
6.2 Nozzle flow path
6.3 Central Land
6.4 Piston Seating Land
7 Clamping piston Screw
8 Spring
9 Air distributor Cum Guide
9.1 Clamping Piston Seating land
9.2 Fastener hole
9.3 Flow Divider
9.4 Flow Clearance groove
9.5 Fastener Seat
9.6 Clamping Piston Seat
9.7 Flow separator Holes
9.8 Gliding Projection
10 Piston block
10.1 Low blow piston cavity
10.2 Blow piston cavity
10.3 Recovery piston Cavity
10.4 Exhaust piston Cavity
10.5 Clamping piston cavity
10.6 Integral Working pressure port
10.7(a,b,c,d,e) Piston air Vent holes
10.8 Fastener Transfer Hole
10.9 Working Pressure Transfer Port
10.10 A, B Air Recovery port
10.11 A, B Exhaust Port
10.12 A,B Clamping Port
10.13 Clamping Exhaust port
10.14 A,B,C,D Diffuser Cavity
11 Air Tight O-ring
12 Aligner O-ring
13 Clamping U-seal
14 Clamping Piston Block
14.1 Clamping Piston Top land
14.2 Oring& seal Groove 1
14.3 Oring & seal Groove 2
14.4 Flow Clearance Groove
14.5 Tapped Hole
15 O-ring
16 U seal
17 Control Piston Block
17.1 Piston Top Land
17.2 Control Piston Oring & seal Groove 1
17.3 Control Piston Oring & seal Groove 2
17.4 Circumferential Flow Path
17.5 Control Piston Oring & seal Groove 3
17.6 Axial Flow Path
17.7 Control Piston Seat
18 Air Tight O-ring
19 U Seal O-ring
20 Pilot Block
20.1 Clamping piston pilot inlet Port
20.2 Exhaust pilot inlet port
20.3 Air recovery inlet port
20.4 Integral pilot inlet port
20.5 Blow pilot inlet port
20.6 Pilot valve mounting Notch
20.7 Low blow pilot inlet port
20.8 A, B Integral Pilot Main Ports
20.9 Fast Switching valve Mounting holes
20.10 Pilot Exhaust port slots
20.11 Mounting Notch Hole
20.12 Mounting Screw
21 Fast Switching Valve
21* Fast Switching valve mounting Screw
22 Spring Lock Washer
23 Clamping Screw
Symbol Description
CL-ON Clamping pilot valve ON
LP -ON Low-Pressure Pilot Valve ON
LP-OFF Low-pressure Pilot Valve OFF
HP-ON High Blow Pressure Pilot Valve ON
HP-OFF High Blow Pressure Pilot Valve OFF
RE-ON Recovery Pilot Valve ON
RE-OFF Recovery Pilot Valve OFF
EXT-ON Exhaust Pilot Valve ON
EXT-OFF Exhaust Pilot Valve OFF
CL-OFF Clamping Pilot Valve OFF
P1 Integral Port to Working pressure (Blow Cavity)
P2 High blow pressure inlet port
P3 Low blow pressure inlet Port
P4 Clamping Port to Mold Cavity
P5 Recovery port to Tank
P6 Exhaust port to Muffler and Silencer
P7 Pilot port operating valve line
P8 Integral Port to Cavity pilot pressure
P9 Pilot Exhaust port
1-1 Control Piston and NRV in Closed Position
1-2 NRV opened due to the low pressure air inlet and control piston rests in closed position
1-3 Both NRV and Control piston opens and flow of low pressure fluid through valve cavity arrangement
1-4 NRV closes due to reversal of fluid control piston remains in open position
2-1 The control piston rests and closed the ports of the nozzle.
2-2 the control piston opens by pilot actuation and admits the fluid flow to the integral cavity
3-3 clamping piston closed position
2-4 clamping piston open and admits the air to the clamping arrangement

DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a blow valve of a molding machine for use in the manufacture of plastic containers, and more particularly, a valve mechanism for combining the clamping operation of the mold cavity, sequential valve functions of blowing, and non-return valve functions in blowing station of the molding machine.

Fig 1 illustrates the assembled valve of the molding machine is proposed. Wherein the valve block comprises the essential elements as shown in the abstract drawing and is named as follows. (1) Manifold block, (2) nozzle O-ring (3)Transfer port O-ring (4) NRV Block (5) Guide Nozzle (6) nonguided Nozzle (7) Clamping piston Screw (8) spring (9) air distributor cum guide (10) Piston block (11) Airtight O-ring (12) aligner O-ring (13) clamping U seal (14) Clamping Piston Block (15) O-ring ( 16) U-seal (17) Control Piston Block (18) Airtight O-ring (19) U seal O-ring (20) Pilot Block [20] (21) Fast Switching valve (21.1)fast switching mounting Screw (22) Spring Lock Washer (23) Clamping Screw.

Fig 2 illustrates the exploded view of the valve is a preferred embodiment in the invention.

In the present embodiment, figure-3 shows that fast switching pilot valves [21] are mounted above the Pilot Block [20] aligned in such a way that interconnects the various functional cavities. The fluid flow through the integral pilot main ports [20.8A, B], passes through the various pilot pressure inlet ports [20.1,20.2,20.3,20.4,20.5,20.7] individually through fast switching pilot valve [21].
The integral pilot pressure ports [20.8 A, B] is constructed on the Pilot Block [20] in which the pressure is connected with the entire inlet port of the pilot valves which is mounted on the Pilot Block [20] aligned within the pilot valve mounting notches [20.6]

Figure-5 shows the embodiment of the inbuilt Pilot Port of the combined blowing valve block.
It is an important embodiment in the construction of the pilot valve where the pilot working port [20.1, 20.2, 20.3, 20.4, 20.5, and 20.7] of the pilot valve is connected to the top of the piston shell or cavities of clamping [CL], pre-blow [LP], blow [HP], recovery [RE] and exhaust [EXT] ports.
The pilot exhaust port slots [20.10] is connected individually to the fast switching valve [21] in such a way that the slots are made to discharge the air to the atmosphere.
The fast switching valve [21] is mounted above the pilot valve block [20] in such a way that the arrangements are made to locate aligned and fastened together by the fast switching valve mounting holes [20.9] & mounting screws [21.1] provided on it.
PISTON BLOCK[10]
Yet the other important embodiment in the invention, where the piston block as shown in the embodiment figure [3 & 6A] the piston cavities are made to perform the various functions. The piston cavities are low blow piston cavity [10.1], blow piston cavity [10.2], Recovery piston Cavity [10.3], Exhaust Piston Cavity [10.4], Clamping Piston Cavity [10.5] on which the corresponding pistons are fixed to obtain the preferred functions. On which the integral pressure port [10.6] laterally provided to connect the blow and pre blow fluid functions in such a way to meet the working pressure transfer port [10.9] to transfer the working fluid to the manifold Block [1] through transfer port [1.3]. On the central portion of the cavities, a diffuser arrangement is provided to diffuse the air while the release through the fluid through the diffuser cavity [10.14 A, B, C, D]. The air recovery port [10.10A, B] and Exhaust port [10.11 A, B] are provided in such a way as shown in the embodiment Figure [3,4,6A] which interconnect cavities on the manifold block through the air recovery cavity[1.4] and exhaust cavity [1.5]. The clamping port [10.12 A, B] allows the air into the mold clamp unit and the clamping exhaust port[10.13] recovers the air from the mold Clamp unit in the blowing station.
Yet the other important embodiment in the invention is the piston air vent holes[10.7, a,b,c,d,e] are provided on the piston block[10] which enables and prevent the vacuum lock and free flow of the pistons. The vent holes are provided in such a way to be positioned as shown in the cross-sectional view of the assembly Figure 7A & 7B.

Manifold Block [1]

The manifold block [1] acts as a base for the valve assembly and holds the functional elements. it comprises of low blow cavity [1.1], blow cavity [1.2], Air recovery cavity [1.4], Exhaust cavity [1.5], and Clamping Cavity [1.6] these cavities are the inlet port of the respective functional cavities to perform their operations. In Fig 4 and 6B, the transfer port [1.3] interconnects the working pressure transfer port [10.9] of the piston block [10]. Where the working ports [1.9A, B & 1.10A, B] supply the fluid to the blowing stations and the low-pressure inlet port [1.7A, B], High-Pressure Inlet Port [1.8A, B] which connects the input from the source. Preblow NRV Seating land [1.15] Air Recovery NRV Seating Land [1.16] and Air Distributor cum Guide Seating Land [1.17] are used to arrests the fluid with the aid of the respective Distributor cum Guide or NRVs on the cavities. Integral Working Port [1.11] through partial transfer ports [1.3,10.9] which interconnects the low blow, blow, recovery, and exhaust ports.
Blind Fastener Mounting Thread [1.12] Clamping Inlet Port [1.13 A, B] Fastener Mounting Thread[1.14]

Control Piston Block [17]
The piston is made up of differential diameter as shown in the embodiment Figure 8 larger diameter on the pilot side and a smaller diameter on the control side.in the smaller diameter of the piston, but it is not limited to a shape of poly gonal or circular, or cylindrical as the persons skilled in the art can make numerous hapes over the structure covered by this invention. It s a preferred embodiment in the invention that the pilot side of the piston is larger profile and the other end is a samller profile. Further, up to a certain extent, it is axially drilled and interconnects radially with one or multiple drilled holes on the circumference to make a circumferential Flow Path [17.4] of control piston block [17]. The control piston blocks [17] are made in such a way that the O-rings & u seals [15, 16, 18, 19] are mounted on the step of the piston ie., Control Piston O-ring & seal Groove2 [17.3] Control Piston Oring & seal Groove 3 [17.5] on either side of the circumferentially drilled holes. The axial entry of the fluid through the Axial-Flow Path [17.6] fluid flow occurs which induces the lift force during the piston operation. The control piston seat [17.7] of the control piston block[17] rests on piston seating land [5.5] of the guided nozzle [5] and piston seating land [6.4] of non-guided nozzle [6] to make fluid leak arrester. The entire control piston block [17] is controlled by the pilot force acting on the piston top land[17.1] to actuate the entire control piston block[17]. With the help of Control Piston Oring & seal Groove 1 [17.2] the air leak is prevented and utilizes the pilot force to resist the higher pressure acting on the other side of the piston.
Figure-9 & figure 10 show the view of the Nozzle.
The nozzle [5,6] is shown in the embodiment which is mounted below the piston and above the NRV Block[4], the lands for the piston [5.5][6.4] are provided to seat the piston over the nozzles (guided and nonguided nozzles [5,6]) to avoid reversal flow. The nozzle flow path [5.3] & [6.2] as shown in the embodiment is to transfer the fluid from the manifold block [1] to the piston Block [10]. The central land [6.3][5.2] is provided below to distribute the air eventually and eliminates the vacuum formation while operating. Below the nozzle guide [5.4] is provided to align the NRV Block [4]. The projected arrangement in nozzle block [5] wherein the nozzle guide [5.4] as shown in the embodiment is to guide the NRV Block [4].
Similarly, the piston seating lands [5.5,6.4] arrangement in the nozzle block [6][5] and the central land [5.2,6.3] to distribute the air eventually through nozzle flow paths [6.2][5.3]. These non-guided nozzles [6] are used for the flow distribution of working fluid in the exhaust and blow cavities. Similarly, the guided nozzles [5] are used for the flow distribution of working fluid in pre-blow and recovery blow cavities.
There are four nozzles [5&6] that are mounted on the bottom of the Piston block [10] in which two are guided nozzle [5] above the low blow cavity [1.1] and recovery cavity [1.4] cavities of manifold block [1]. Similarly, another two non-guided nozzles [6] are located above the blow cavity [1.2] and exhaust cavity [1.5] of the manifold block [1]. The nozzle guides [5.4] of the guided nozzles [5] are used to guide the NRV [4] in pre-blow and recovery operations.
On both sides of the guided nozzles [5] and non-guided nozzles [6] nozzle O-ring [2] is mounted to make the cavity airtight.

Non-Return Valve-NRV [4]
In Fig 11, the NRV[4] is shown, it is placed between the Preblow and Air recovery flow Paths. The NRV [4] is made in such a way that the inner NRV vent [4.1] acts as a flow path of fluid while the NRV[4] moving upwards and downwards. The NRV Guide Wall [4.2] allows the NRV[4] to reorient with the aid of the Nozzle Guide [5.4]. The outer NRV Vent [4.3] acts as a Flow resistance path to close the NRV [4] suddenly while reversal of Flow.
it is the preferred and important embodiment in the invention is that non-return valve orNRV [4] is shown in figure 11, it plays the main functional aspect of the valve on which the NRV Seat [4.4] prevents the reverse flow of fluid while downward. And the other parts are Inner NRV Vent [4.1], NRV Guide Wall [4.2], Outer NRV Vent [4.3] Similarly it allows the flow from Preblow NRV Seating land [1.15] and Air Recovery NRV Seating Land [1.16] while upwards.

Clamping Piston Block [14]
From Fig 12, the entire Clamping piston block [14] is controlled by the pilot force acting on the clamping piston top land [14.1] to actuate the entire control piston block [14]. With the help of Clamping Piston Oring & seal Groove 1 [14.2] the air leak is prevented and utilizes the pilot force to resist the higher pressure acting on the other side of the piston.
The clamping piston block [14] is made in such a way that the aligner O-rings & clamping U seal [12, 13] is mounted on the smaller diameter of the step of the piston O-ring & seal Groove 2 [14.3] similarly on the larger diameter of the Clamping Piston [14] the airtight o-ring [18] and U seal o-ring [19] is mounted on the Clamping Piston Oring & seal Groove 2 [14.2]. There is a flow clearance groove [14.4] around the smaller diameter or the smaller profile for the smooth passage of fluid flow and there is a tapped hole to connect the air distributor cum guide [9] below it. , but it is not limited to a shape of polygonal or circular, or cylindrical as the persons skilled in the art can make numerous chapes over the structure covered by this invention. It s a preferred embodiment in the invention that the pilot side of the piston is larger profile and the other end is a samller profile.

Air Distributor Cum Guide [9]
The entire clamping piston assembly and details are shown in the figure [12,13&14]. The clamping piston[14]is positioned on the top of the piston block[10]. Then the top surface [9.1] of the air distributor cum guide [9] locates on the bottom of piston blocks [10] which seats on the bottom surface of the clamping piston block [14]. It is rigidly fastened together with the help of a clamping piston screw [7]. Clamping piston screw [7] which guides on Fastener hole [9.2] and seats on Fastener Seat [9.5] as shown in the embodiment Figure [12]. Flow separator Holes [9.7] are provided to transfer the fluid to flow clearance groove [9.4]. The flow clearance groove [9.4] is provided on the air distributor cum guide to distribute the air circumferentially on it. The Gliding Projection [9.8] is provided to guide the walls of the clamping cavity [1.6]. The bottom side of the Gliding Projection [9.8] acts as a spring [8] retainer. The spring [8] reverses the entire clamping piston to its original position while de-energized. The Clamping Piston Seat [9.6] which locates on Air Distributor cum Guide Seating Land [1.17] to prevent flow. The Flow Divider [9.3] diverts the fluid smoothly from the clamping system of the blowing station to the clamping exhaust port [10.13].
Assembly Description
The blowing block is made up of Aluminium alloy materials to withstand working pressure and properties such as hard, non-corrosive, wear resistance, impact resistance adhesion resistance materials. According to the functional requirements, cavities are protruded profiles are machined and finished in such a way as shown in the embodiment to perform various functions. The valve block is fragmented into three major portions as shown in the embodiment such as manifold block [1] piston block [10] and pilot block [20].
In the Piston block [10] cavities such as Low blow piston cavity, Blow piston cavity, Recovery piston Cavity & Exhaust piston Cavity are made. In those Functional cavities control piston block [17] along with its o-rings[15][18] and u seals [16][19] is mounted respectively. On both sides of the Clamping piston cavity of piston block [10], the clamping piston[14] along with rings [12][18] and useals[13][19] & air distributor cum guide[9] with spring[8] are fastened together as said earlier.
The two Guided nozzles[5] are placed in-between the low blow and air recovery control piston block[17] and manifold block[1]. Similarly, another two Non-Guided nozzles[6] are placed in-between the blow and Exhaust control piston block[17] and manifold block[1].
The NRV’s are placed below guided nozzles [5] and above the pre-blow cavity [1.1] and recovery cavity [1.4] on the manifold block [1].
The low blow and high blow pressures are admitted to the valve utilizing ports provided in the lowermost manifold block [1].Then manifold block [1] is located below the piston block [10] in-between, the airtight nozzle o-rings [2], transfer port o-ring [3] are positioned to prevent the air leak.
The pilot block [20] is assembled over the piston block [10] which is fastened together with the help of the spring lock washers [23] & clamping screws [22]. These fasteners ensure the rigidity in the clamping of the fragmented valve blocks and make them leakproof with the aid of air-tight o-ring [11], Nozzle o-ring [2]transfer port oring[3].
The operation of the valve is controlled and initiated using electrical signals provided to the fast switching pilot valve [21] mounted over the pilot block [20] to obtain several functionalities.

Working process of the combined blowing valve Block.
1. Principal process
The air is admitted in to inlet port when the NRV [4] is positioned in such a way to admit or deny fluid flow through the passage. On the peripheral surface of the NRV [4] and below the control piston [10] the air passes through clearance in-between the cavity arrangement and NRV [4] then the fluid diffuses upright via guide nozzle [5] and axially impinges on the control piston block [10] and leaving through the circumferential holes of the control piston block [10] in a zig-zag manner. Then it is diverted and transferred via an integral transfer passage on either side of the arrangement of the circumferentially drilled holes the seals are used to prevent the leak.
Similarly, the process is carried out in the case of a control piston [10] with a non-guided nozzle [6] arrangement. The flow is entirely controlled using the pilot pressure alone to operate the control piston [10] to allow or deny the flow of fluid sequentially.
The clamping piston is separately attached & arranged on the valve block to perform the clamping operation. The air is admitted via the inlet port [1.13]. The clamping valve admits the air into the cavity and releases the air via the exhaust port [10.13]. The integral clamping piston block 1[14] and air distributor cum guide [9] admits and denies the air to the clamping cavity and releases air from the clamping cavity to the atmosphere with the aid of a flow divider [9.3] on the air distributor cum guide [9] and flow clearance groove [14.4] on clamping piston block [14] which is located inside the piston block [10]. The fast switching pilot valve is mounted on the top of the pilot valve block [20] to trigger and connect the piston chamber to actuate with the help of the pilot-assisted air whenever the combination of clamping is required.
From Fig 15A,15B it is exhibited that (the symbolic representation (Pneumatic representation) of entire valve block on which the inlet, exhaust port and its flow process representation is made for clear understanding. On which the constructional representation of the invention with respect to the equivalent pneumatic flow process. The operating position of process are exhibited in the figure-16

It is observed from the Fig 1- Fig18, that A blowing valve for blow molding machine consisting of a pilot valve block [20] having integral pilot main ports [20.8A, B] on lateral side, having pilot pressure inlet ports [20.1,20.2,20.3,20.4,20.5,20.7], a set of pilot operated/ fast switching valves [21] are mounted above the pilot valve block [20] in such a way by fast switching valve mounting holes [20.9] & mounting screws [21.1], -a piston block [10] having low blow piston cavity [10.1], blow piston cavity [10.2], Recovery piston Cavity [10.3], Exhaust Piston Cavity [10.4], Clamping Piston Cavity [10.5], and piston air vent holes[10.7a, 10.7b, 10.7c, 10.7d, 10.7e]for enabling and preventing the vacuum block and free flow of the pistons.
-a pilot block [20] is assembled over the piston block [10], a manifold block [1] having a low blow cavity [1.1], blow cavity [1.2], Air recovery cavity [1.4], Exhaust cavity [1.5], and Clamping Cavity [1.6] are the inlet ports and a transfer port [1.3] interconnects the working pressure transfer port [10.9] of the piston block [10], Working Ports [1.9A, B & 1.10A, B] which supply the fluid to the blowing stations and the low-pressure inlet port [1.7A, B], High-Pressure Inlet Port [1.8A, B], Preblow NRV Seating land [1.15] Air Recovery NRV Seating Land [1.16] and Air Distributor cum Guide Seating Land [1.17], Integral Working Port [1.11] through partial transfer ports [1.3,10.9] interconnecting the low blow, blow, recovery and exhaust ports [EXT] [10.11A, B], Blind Fastener Mounting Thread [1.12] Clamping Inlet Port [1.13 A, B] Fastener Mounting Thread[1.14], -a control piston block [17] having circumferential flow path [17.4], a clamping piston block [14] having a flow clearance groove [14.4] around the smaller profile of the clamping piston block [14] for smooth passage of fluid flow and a tapped hole to connect the air distributor cum guide [9] below the clamping piston block [14]. a, non-return valve block NRV [4] having NRV vent [4.1], NRV Guide Wall [4.2], and an outer NRV Vent [4.3] is placed between Preblow NRV Seating land [1.15] air recovery NRV Seating Land [1.16], a set of guided nozzles [5] and non-guided nozzles [6] having nozzle flow paths [5.3] and [6.2] respectively to transfer the fluid from a manifold block [1] to piston Block [10],
Wherein, fluid is admitted into the valve cavity internally flow through ports inner NRV vent [4.1] & Flow past outer NRV vent [4.3] through the internal flank of the piston block [17], the air is admitted using contour path, Wherein the control piston block (17) arrangement the fluid passes axially through the inner side of the piston (17) and fluid exit releases through the drilled holes on the circumference of the piston block and vice-versa,
Wherein the Control Piston Block [17] having a larger profile on one end and a smaller profile on the other end,
wherein the smaller profile of the control piston block [17] is axially drilled for multiple drilled holes thereby a circumferential Flow Path [17.4] is made,
Wherein the control piston block [17] is made using Control Piston O-ring & seal Groove2 [17.3] Control Piston Oring & seal Groove 3 [17.5] on either side of the circumferentially drilled holes,
wherein the control piston block [17] is controlled by a pilot force acting on the piston top land [17.1] to actuate the entire control piston block[17]by the Control Piston Oring & seal Groove 1 [17.2] thereby air leak is prevented and utilizes the pilot force to resist the higher pressure acting on another side of the piston,

The NRV block [4] is guided axially with the nozzle block which enables the flow path and drift evenly by nozzle block [6][5] having central land [5.2,6.3] to distribute the air eventually through ports nozzle flow paths [6.2][5.3] thereby resisting reversal flow by the NRV Seat [4.4]. The control piston block (17), clamping piston block [14], NRV [4], Air Distributor Cum Guide [9] are made up of polymeric material to enhance the operation of valve with faster response.
The individual valve cavities are located close to the blowing station to reduce the volume of blowing air and reduce the expansion and compression of the air during the operation elimination of fittings.
The nozzles [5,6] are mounted at the bottom of the Piston block [10] thereby fluid flow passage enriches the lift force and diffuses the air to upsurges the valve lifting turbulence and parallelly improving piston activity. The control piston [17] having a control piston seat [17.7] is resting on piston seating land [5.5] of the guided nozzle [5] and piston seating land [6.4] of non-guided nozzle [6] to make fluid leak arrester.[5.5, 6.4] respectively to close the inlet port of the air nozzle [5, 6] with the aid of piston arrangement axial flow path [17.6] prevents the air leak and the exhaust ports [EXT] [10.11A,B] is incorporated a muffler or silencer arrangement to exhaust the air smoothly without noise . wherein blowing valve for blow molding machine the valve is made up of Aluminium alloy composite materials and the clamping piston [9] is having Gliding Projection [9.8] to guide on the walls of the clamping cavity [1.6] acting as a spring [8] retainer reverses the entire clamping piston to its original position.

The objective of the present invention is to provide a valve mechanism that can reduce time delay and built-up pressure in transfer tubing of the systems, and can reduce the volume of blowing air, expansion, and compression of the air during the operation achieved by means of the integral port arrangement provided on the halved valve blocks as shown in the figure 3. This avoids the expansion and contraction inside transfer tube results in avoids the minor loss during the flow of fluid.
The other objective of the present invention is to provide a faster response to the pressure pilot actuation signal and reducing the consumption of power achieved by aid of pilot assistance valves and differential diameter control pistons based on the principle of Pascal’s law it holds the high pressure air at the bottom side of the control piston provided on each control cavities Yet the other objective of the present invention is mounting every single valve located close together so that a significant reduction in switching and Actuation time of the valve operation is achieved. By means of the pilot assistance. With the aid of pilot assistance valves and differential diameter control pistons based on the principle of Pascal’s law it holds the high pressure air at the bottom side of the control piston block [17] provided on each control cavities.

Yet the another objective of the present invention to provide a valve mechanism that can exhibit a valve cavity is arranged in the combined blowing block which reduces the operation timing in microseconds which improves the operative and blowing capacity collectively is achieved by means of the faster operating control piston and flow path turbulence activates the valve in a faster way. This consolidation of operating milliseconds increases the per hour productivity of machine, significantly with the aid of this exhibited invention.
Yet the objective of the present invention to provide a valve mechanism with a single working integral port for reducing the frictional losses, by which losses that occurred during flow are avoided while blowing operations achieved with the aid of single integral working port [10.6], transfer fluid via working pressure port [10.9] to transfer port[1.3] on manifold block[1] to the entire manifold block Integral Working Port [1.11] to distribute fluid to the respective blowing cavities recovery tank or exhaust ports.

The detailed descriptions of the above embodiments are not exhaustive descriptions of all embodiments contemplated by the inventors to be within the scope of the invention. Indeed, persons skilled in the art will recognize that certain elements of the above-described embodiments may variously be combined or eliminated to create further embodiments, and such further embodiments fall within the scope and teachings of the invention. It will also be apparent to those of ordinary skill in the art that the above-described embodiments may be combined in whole or in part to create additional embodiments within the scope and teachings of the invention.
Thus, although specific embodiments of, and examples for, the invention are described herein for illustrative purposes, various equivalent modifications are possible within the scope of the invention, as those skilled in the relevant art will recognize. The teachings provided herein can be applied to other blow-molding valves, and not just to the embodiments described above and shown in the accompanying figures. Accordingly, the scope of the invention should be determined from the following claims.