Description:FIELD OF THE INVENTION
The present invention relates to detachable automatic doffing machine used for doffing and donning in the Ring Spinning machines. Particularly, the present invention relates to an apparatus for loading and feeding the empty bobbins to the bobbin donning assembly in automatic doffing machines.

BACKGROUND OF THE ART
In Ring spinning machines, during doffing, the completely wound plurality of bobbins is removed from each spinning stations and replaced with empty bobbin tubes. This doffing process shall either be done by manually or automatic doffing apparatus. Normally, automatic doffing shall be carried out by the integrated doffing apparatus mounted in the Ring spinning machines. The integrated doffing apparatus usually has a plurality of gripping devices, so that a gripping device is assigned to each spinning station. The gripping device first removes the full bobbins from the spinning station and places it on the pegs mounted on a conveyor belt. Then the gripping device grips the empty tube and removing it from the peg on the conveyor belt and places it on the spindle. The integrated doffing machines are required to be mounted in each ring spinning machine which is expensive and occupies more space which are disadvantageous.

Alternatively, detachable doffing machines are used to replace the conventional manual doffing operation. Said detachable doffing machines are cost effective, requires minimum space, easy to operate and suitable for various types of Ring frames. In the existing integrated doffing apparatus, one gripping device is assigned for each spinning station to remove the full bobbins and to replace with empty bobbins. Whereas in detachable doffing machines, only 8 to 12 gripping devices are assigned to pick the full bobbins. The detachable doffing machines move along either side of the ring frame and the gripper assembly picks the full bobbin and place them in the Bins. The empty bobbins are stored in a crate and laid over the empty spindles and the laid empty tubes are pressed into the spindles by hand or using a pressing device.

The gravity based empty bobbin insertion system has several disadvantages. While laying the empty bobbins, some of the empty bobbins may not fall in the respective spindles and create empty spindles. The bobbins may be struck in the bin or in the bobbin supply mechanism. As an effect, yarn breakages may increase while restarting after the doffing process. In order to overcome the abovesaid problems in the existing detachable doffing machines, Various efforts have been made in the existing art.

For example, Indian patent application 3835/CHENP/2012 discloses an intelligent ring doffer which is a detachable doffing machine with gravity based empty bobbin feeding mechanism. Said intelligent ring doffer includes a doffing trolley, a full-yarn basket and a 3D robot mounted with an asynchronous bobbin-pulling mechanism which is fixedly installed at the detachable arm of the 3D robot. Said asynchronous bobbin-pulling consists of two fixed bobbin-pulling devices and each of the fixed bobbin-pulling device includes a connection block which is fixed connected to the beam and a manipulator which is fixed connected to the connection block. At least one detachable bobbin-pulling device is arranged between the two fixed bobbin-pulling devices in parallel. The intelligent ring doffer is used to automatically pull out the full bobbin of the ring spinning frame and automatically convey, arrange, and apply the empty bobbin to the empty spindle of the ring spinning frame.

Chinese patent application CN111945257 discloses an automatic doffing of an external doffing mechanism which comprises a support plate, a containing box and a bobbin box, wherein fixing frames are fixedly connected to the upper surface of the support plate; a mounting plate is fixedly connected to the upper surfaces of the fixing frames; the containing box is arranged on the upper surface of the support plate; and the bobbin box is arranged on the upper surface of the mounting plate. The outer surface of the power box is rotatably connected with a yarn dropping disc. Empty bobbins can be automatically placed and adjusted in order while doffing is conducted through the external doffing mechanism. But the yarn dropping disc mechanism also uses the gravity principle to load the empty bobbins in the spindles which is disadvantageous.

An Indian patent application 201841023820 filed by the Applicant titled “A detachable doffing apparatus” discloses a detachable doffing machine and an apparatus to load the empty bobbins in the empty bobbin feeding mechanism. The doffer used a motorized bobbin receptacle housed inside the Mobile auto doffer which is prefilled with required number of Bobbins. The Receptacle is filled with bobbin with the aid of a Cartridge and the empty bobbins are filled in the said cartridge using an offline Cartridge filling machine. Advantage of the detachable doffing apparatus is, said doffing machine uses a gripper assembly and a bobbin dispensing assembly for positively loading the empty bobbins in the spindles.

The existing bobbin feeding mechanism disclosed in the patent application number 201841023820 requires an external bobbin sorting and Cartridge filling machine. Also, the filled cartridges are to be carried by hand and the bobbins should be manually stacked in the bobbin dispensing assembly which is disadvantageous. Therefore, the present invention provides an improved bobbin dispensing apparatus for the detachable doffing machine to overcome the disadvantages present in the existing doffing machines.

SUMMARY OF THE INVENTION
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.

According to the main aspect of the present invention, a bobbin dispensing apparatus for detachable doffing machine is disclosed. Said bobbin dispensing apparatus comprises of a bobbin loading assembly consists of an oscillator box with plurality of oscillating plates and a driving arrangement; a sensing device consists of a plurality of sensing means mounted on a holding bar, wherein said sensing means are mounted on the front plate of the oscillator box; a bobbin pushing assembly consists of a grooved plate and a pusher mechanism, said bobbin pushing assembly is rigidly mounted on the machine frame and positioned below the bobbin loading assembly; a bobbin dispensing assembly consists of a dispenser unit and said dispenser unit consists of an array of links with plurality of pegs, wherein said dispenser unit is mounted below the empty bobbin placing assembly; a poking mechanism consists of a frame, plurality of poking plates mounted on a shaft, and a driving arrangement wherein said poking mechanism is mounted below the frame of the bobbin dispensing assembly.

According to the method for operating the bobbin dispensing apparatus, said method comprising the following steps. According to the method of working of the present invention, the sensor mounted in the dispenser unit senses the presence of bobbin in the peg link and transmits the signal to Control unit. Once the signal is received, the control unit enables the dispenser unit drive motor and moves the peg link to loading position. The motor mounted in the oscillator box is enabled and the oscillating plates are operated to align the bobbins in the respective grooves of the grooved plate. Simultaneously, the pusher motor mounted in the bobbin pushing assembly is enabled, and the pusher plate pushes the bobbins placed in the grooves of the grooved plate into the peg. After every pushing operation, the sensing means senses the presence of bobbin in each groove. If any one of the bobbins is not inserted into the peg, the sensing means transmits the signal to the Control unit and the pusher motor will be reactivated. The pusher plates repress the bobbin into the peg and comes to the homing position only after all the bobbins are properly inserted into the peg array. If all the bobbins are properly inserted into the pegs, sensing means transmit the signal to the Control unit. Then the sensing disc sensor and the dispenser unit sensor is enabled to repeat the process cycle. At least, ten peg links are loaded with empty bobbins before the doffing process, and rest of the peg links are loaded with empty bobbins during the doffing operation carried out by the doffing machine.

OBJECTIVE OF THE INVENTION
Main aim of the present invention to provide a detachable doffing machine with an integrated bobbin dispensing apparatus.

Another objective of the present invention is to provide a bobbin loading assembly to separate the bobbins and loading in individual pegs.

Yet another objective of the present invention is to provide a bobbin dispensing assembly to supply empty bobbins to the picking mechanism.

Yet another objective of the present invention is to provide a sensing arrangement to sense the presence of empty bobbins in the bobbin loading assembly.
Still another objective of the present invention is to provide a poking mechanism in the bobbin dispensing assembly to align the cops in the respective slots of the pusher plate.

Still another object of the present invention is to provide an operating and controlling method for the bobbin dispensing mechanism mounted in the detachable doffing machine.

BRIEF DESCRIPTION OF THE DRAWINGS
The above and other aspects, features, and advantages of certain exemplary
embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which:

Fig – 1 depicts a detachable doffing machine according to the present invention.

Fig – 2 depicts a bobbin dispensing apparatus mounted in the detachable doffing machine according to the present invention.

Fig – 3 and 3a depicts a bobbin loading assembly mounted in the detachable doffing machine according to the present invention.

Fig 4 and 4a depicts an oscillating plate mounted in the oscillator box according to the present invention.

Fig – 5 depicts an exploded view of bobbin loading assembly according to the present invention.

Fig – 6 and 6a depicts a bobbin pushing assembly mounted in the detachable doffing machine according to the present invention.

Fig – 7 and 7a depicts a bobbin dispensing assembly mounted in the detachable doffing machine according to the present invention.

Fig – 8 and 8a depicts a poking mechanism mounted in the bobbin loading assembly according to the present invention.

Fig – 9 is a flow chart which describes the working method of bobbin dispensing mechanism according to the present invention.

Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF THE DRAWINGS
The terms and words used in the following description and claims are not limited to the bibliographical meanings but are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Fig – 1 describes a detachable doffing machine according to the present invention. Said detachable doffing machine (1) consists of a main frame (121), full bobbin picking assembly (131), empty bobbin placing assembly (141), a control unit (151), a full bobbin collection chamber (161), a driving arrangement (171) and a power supply unit (181). According to the present invention, a bobbin dispensing apparatus (111) is mounted below the empty bobbin placing assembly (141) in the detachable doffing machine (1).

Fig – 2 describes the bobbin dispensing apparatus (111) mounted in the detachable doffing machine (1) according to the present invention. Said bobbin dispensing apparatus (111) comprises of a bobbin loading assembly (11), a bobbin sensing device (51), a bobbin pushing assembly (61), and a bobbin dispensing assembly (81).

Fig – 3 and 3a depicts a bobbin loading assembly (11) mounted in the detachable doffing apparatus (111) according to the present invention. Said bobbin loading assembly (11) consists of an oscillator box (12) which is mounted over the bobbin pushing assembly (61). Said oscillator box (12) consists of a front plate (13), back plate (14), left side plate (15) and a right-side plate (16). In the front and back plates of the oscillator box, at least three brass plates (17, 18, 19) with angular slots are replaceably mounted. The bottom portion of the front plate (13) and back plate (14) consists of plurality of slots (21). Plurality of oscillating plates (25) are movably mounted inside the oscillator box (12). A plurality of support rods (24a, 24b, 24c) are mounted in between the front and back plates of the oscillator box (12) to increase the rigidity and to control the bobbin movement. Plurality of projected pins (20) are provided in the side walls of the oscillator box to facilitate the seating of bobbin containers. A driving arrangement (31) is provided in the bobbin loading assembly (11) to oscillate the plates (25) at a predetermined interval.

Fig 4 and 4a describes the oscillating plate (25) mounted in the oscillating box (12) according to the present invention. Said oscillating plate (25) consists of a guiding means (26) on either side and said guiding means (26) consists of an upper pin (27) and a lower pin (28). The guiding means (26) are mounted in the plate (25) using the fasteners (29) and said fasteners are mounted in the slots (30) provided in the plate (30). At least sixteen numbers of oscillating plates (25) are mounted in the oscillator box (12). The oscillating plate (25) is made up of alloy or polymer materials.

Fig – 5 depicts an exploded view of bobbin loading assembly (11) and the oscillator box driving arrangement (31) according to the present invention. A driving motor (32) and a cam drive (35) is mounted in the bobbin loading assembly (11). The drive motor (32) is preferably a servo motor. The drive motor (32) consists of a drive pulley (33) and the cam drive (35) consists of a driven pulley (36), a driving belt (34) is used to connect the said drive and driven pulleys. The cam drive (35) is mounted on a frame (37) and said frame is rigidly mounted on the bobbin loading assembly (11). The driven pulley (36) is mounted on a drive shaft (38) in which a set of cam pins (39a, 39b) are mounted on either side of the drive shaft. Also, a set of cam blocks (40a, 40b) are provided to connect the oscillator box (12) and the driving arrangement. One end of said cam block (40) is connected with the cam pin (39) and another end said cam block consists of a pin (41). An oscillating rod (42) with plurality of slots is connected with the pin (41) of the cam block (40). The upper pin (27) of each oscillating plate (25) is movably placed inside the slots provided in the oscillating rod (42). The lower pin (28) of each oscillating plate (25) is movably placed inside the slots (21) provided in the front plate (13) and back plate (14). When the drive motor (22) is started, the oscillating rod (42) is operated with ‘to and fro’ movement, and as a result, the plurality of plates (25) mounted inside the box (12) are oscillated at a predetermined speed.

Fig – 5 further discloses a bobbin sensing device (51) mounted in the bobbin loading assembly (11) according to the present invention. The sensing device (51) consists of a sensor holding bar (52) and said bar is provided with plurality of mounting plates (53). A plurality of sensing means (54) is rigidly mounted on the mounting plates (53) using the fasteners (55). The entire sensor bar arrangement is mounted on the front plate (13) of oscillator box (12). The sensing means are preferably optical proximity sensing means, for example, photo diffuse sensors. The sensing device (51) is connected with the programmable logic controller (152) of the Control unit (151). The sensing device (51) is used to identify the missing bobbins in the grooved plate (62) and further to control the operation of the bobbin pushing assembly (61).

Fig – 6 and 6a depicts a bobbin pushing assembly (61) mounted in the detachable doffing machine according to the present invention. Said bobbin pushing assembly (61) is rigidly mounted on the machine frame and positioned below the bobbin loading assembly (11). The bobbin pushing assembly (61) consists of a grooved plate (62) and a pusher mechanism (66). The grooved plate (62) consists of plurality of grooves (63) and each groove is separated by the walls (64). Each groove consists of a slot (65) and said slots are extended to the wall portion of the grooved plate. The pusher mechanism (66) consists of a frame (67), plurality of pusher plates (70) mounted on a movable platform (69), and a driving arrangement (71). Said driving arrangement (71) consists of a driving motor (72) and a drive shaft (76). The frame (67) consists of four side walls (68a, 68b, 68c, and 68d) and the drive shaft (76) is mounted on the side walls (68a, 68b). A drive pulley (73) is mounted in the motor (72) and driven pulley (74) is mounted on the drive shaft (76), and a driving belt (75) is mounted in the said pulleys. Another drive shaft (77) is mounted in the side walls (68c, 68d). A pair of geared pulleys (78a, 78b, 78c, and 78d) are mounted in the drive shafts (76, 77) and connected with the drive belts (79a, 79b). The pusher plates are operated by this driving arrangement (71).

The pusher mechanism (66) consists of at least sixteen pusher plates (70) and said pushers are rigidly mounted on the platform (69). Each pusher plate (70) has a fin (81) and said pusher plates are mounted in a manner to position the fins (81) in the extended portion of the slots (65). The platform (69) is mounted on the drive belts (79a, 79b). When the pushing command is initiated, the drive motor (72) rotates clockwise and moves the pusher platform (69) to a predetermined distance and once the distance is reached, the drive motor rotates anticlockwise and moves back the platform (69) to its original position. The pusher plates (70) push the bobbins placed in each groove (63) and load the bobbins in the bobbin dispensing assembly (81).

Fig – 7 and 7a depicts a bobbin dispensing assembly (81) mounted in the detachable doffing machine (111) according to the present invention. Said bobbin dispensing assembly (81) consists of a dispenser unit (82) and said dispenser unit consists of an array of links (83) with plurality of pegs (84). At least thirty rows of links (83) are mounted in endless chains (85a, 85b) and said chains are rotatably mounted in the dispenser unit (82). Each link (83) consists of at least sixteen pegs (84).

Fig – 7a further describes the driving arrangement of the bobbin dispensing assembly (81). The dispenser unit (82) consists of a set of side frames (86a, 86b) and said frames are rigidly mounted on the machine frame. The endless chains (85a, 85b) with array of peg links are mounted on the side frames (86a, 86b) and driven by the driving arrangement. A driving motor (87) is mounted in the side frame (86a) and consists of a chain drive gear (88). A drive shaft (91) is mounted at the upper end of the side frames and a chain driven gear (89) is mounted at the end of the drive shaft (91). A drive chain (90) is used to drive the dispenser unit through the driving motor (87). The dispenser unit (82) is mounted below the empty bobbin placing assembly (141). A sensing disc (92) is mounted adjacent to the chain gear (89) and a sensing means (93) is mounted in the upper portion of the side frame (86a) to sense and control the movement of dispenser unit (82). Said sensing means (93) is preferably an inductive proximity sensor. Also, sensing means (94) with a reflecting means (94a) and sensing means (95) are mounted above the dispenser unit (82) to monitor the presence of empty bobbins (96) in the peg links and to control the excessive rotation. If there are ‘NO’ empty bobbins in the peg link array (83), the sensing means (94) enables the signal to drive the pusher assembly and the dispenser unit. When the presence of bobbins is sensed, the bobbin pushing assembly (61) and the bobbin dispensing assembly (81) shall be stopped. If excessive bobbins are sensed in the peg link, the sensing means (94) enables the drive motor (87) to rotate in reverse direction and positions the peg link below the picking gripper. Two support rods (97, 98) are provided in between the side frames to maintain the uniform distance between the frames and to enhance the rigidity. The number of peg links to be loaded shall be determined based on the number of spindles present in the ring spinning machine.

Fig – 8 and 8a depicts a poking mechanism (101) mounted in the bobbin loading assembly according to the present invention. Said poking mechanism (101) is mounted in the frame (67) of the bobbin dispensing assembly (61). The poking mechanism (101) consists of a frame (67), plurality of poking plates (102) mounted on a shaft (104), and a driving arrangement. Said driving arrangement consists of a driving motor (105) drive pulley (106) and a driven pulley (107) wherein said driven pulley is mounted in the shaft (104). A timing drive belt (108) is used to operate the poker plates. Each poker plate (102) consists of an extended nose (103) portion. When the drive motor (105) is enabled, the poker plates are moved to a certain angle for example, 45° and as a result, the poker nose (103) moves through the slot (65) of the grooved plate (62) and pokes the empty bobbins placed inside the grooves (63) of the said grooved plate (62). This poking action helps to align the bobbins dislocated inside the oscillator plate (12).

Fig – 9 is a flowchart which discloses the method of working of the bobbin dispensing apparatus (111) according to the present invention. The various sensing means, driving motors and driving arrangements mounted in the bobbin loading assembly (11), bobbin sensing device (51), bobbin pushing assembly (61), bobbin dispensing assembly (81), and the poking mechanism (101) are connected to the Control unit (151). According to the method of working of the present invention, the sensor (94) mounted in the dispenser unit (82) senses the presence of bobbin in the peg link (83) and transmits the signal to Control unit (151). Once the signal is received, the control unit (151) enables the dispenser unit drive motor (87) and moves the peg link (83) to loading position. The motor (32) mounted in the oscillator box (12) is enabled and the oscillating plates (25) are operated to align the bobbins in the respective grooves (63) of the grooved plate (62). Simultaneously, the pusher motor (72) mounted in the bobbin pushing assembly (61) is enabled, and the pusher plate (70) pushes the bobbins placed in the grooves (63) of the grooved plate (62) into the peg (84). After every pushing operation, the sensing means (54) senses the presence of bobbin in each groove (63). If any one of the bobbins is not inserted into the peg (84), the sensing means (54) transmits the signal to the Control unit (151) and the pusher motor (72) will be reactivated. The pusher plates repress the bobbin into the peg and comes to the homing position only after all the bobbins are properly inserted into the peg array. If all the bobbins are properly inserted into the pegs, sensing means (54) transmit the signal to the Control unit (151). Then the sensing disc sensor (93) and the dispenser unit sensor (94) is enabled to repeat the process cycle. At least, ten peg links are loaded with empty bobbins before the doffing process, and rest of the peg links are loaded with empty bobbins during the doffing operation carried out by the doffing machine (1).

As per the invention, it discloses a bobbin dispensing apparatus (111) for detachable doffing machine (1) with a bobbin placing assembly (141). The apparatus has a bobbin loading assembly (11) consists of an oscillator box (12) with plurality of oscillating plates (25) and a driving arrangement (31). A sensing device (51) consisting of a plurality of sensing means (54) is mounted on a holding bar (52) and the sensing means are mounted on the front plate (13) of the oscillator box (12). Further a bobbin pushing assembly (61) is consisting of a grooved plate (62) and a pusher mechanism (66). The bobbin pushing assembly (61) is rigidly mounted on the machine frame and positioned below the bobbin loading assembly (11). It also has a bobbin dispensing assembly (81) with a dispenser unit (82) and the dispenser unit has an array of links (83) with plurality of pegs (84). The dispenser unit (82) is mounted below the empty bobbin placing assembly (141). The apparatus also has a poking mechanism (101) consisting of a frame (67), number of poking plates (102) which are mounted on a shaft (104) and a driving arrangement. The poking mechanism (101) is also mounted below the frame (67) of the bobbin pushing assembly (61).

In another aspect the oscillating plate (25) has a guiding means (26) on either side and said guiding means (26) consists of an upper pin (27) and a lower pin (28).

In another aspect the oscillator box driving arrangement (31) has a driving motor (32) and a cam drive (35). The drive motor and cam drive are mounted in the bobbin loading assembly (11).

In another aspect the said drive motor (32) is preferably a servo motor.

In another aspect the said drive motor (32) consists of a drive pulley (33) and the cam drive (35) with a driven pulley (36) and a driving belt (34) is used to connect the said drive and driven pulleys.

In another aspect there is a cam block (40) with a set of cam blocks (40a, 40b) which are provided to connect the oscillator box (12) and the driving arrangement (31). The one end of said cam block (40) is connected with a cam pin (39) and another end of cam block has a pin (41).

In another aspect there is an oscillating rod (42) with number of slots which is connected with the pin (41) of the cam block (40). The upper pin (27) of each oscillating plate (25) is movably placed inside the slots provided in the oscillating rod (42). The lower pin (28) of each oscillating plate (25) is movably placed inside the slots (21) provided in the front plate (13) and back plate (14).

In another aspect the grooved plate (62) consists of number of grooves (63) and each groove is separated by the walls (64). Each groove has a slot (65) and said slots are extended to the wall portion of the grooved plate (62).

In another aspect the pusher mechanism (66) has a number of pusher plates (70), and a driving arrangement (71). Each pusher plate (70) has a fin (81) and said pusher plates (70) are mounted on a movable platform (69) and operated by the driving arrangement (71).

In another aspect the dispenser unit (82) has at least thirty rows of links (83) mounted in endless chains (85a, 85b) and each link (83) consists of at least sixteen pegs (84).

In another aspect the dispenser unit (82) has a set of side frames (86a, 86b) and the endless chains (85a, 85b) with array of peg links which are mounted on the side frames (86a, 86b) and is driven by a driving motor (87) which is mounted in the side frame (86a).

In another aspect a sensing disc (92) is mounted adjacent to a chain gear (89) and a sensing means (93) is mounted in the upper portion of the side frame (86a), said sensing means (93) is an inductive proximity sensor.

In another aspect a sensing means (94) and sensing means (95) are mounted above the dispenser unit (82).

In another aspect each poker plate (102) has an extended nose (103) portion, and the poker plates are lifted to an angle of 45° by the drive motor (105).

In another aspect the sensing means, driving motors, and driving arrangements are mounted in the bobbin loading assembly (11) and the bobbin sensing device (51), bobbin pushing assembly (61), bobbin dispensing assembly (81), and the poking mechanism (101) are all connected to a Control unit (151).

In another invention includes a method for operating the bobbin dispensing apparatus (111) as claimed in claim 1, said method comprising the steps of;
- Sensing the presence of bobbin in the peg link (83) using the sensor (94) mounted in the dispenser unit (82) and transmitting the signal to Control unit (151);
- enabling the dispenser unit drive motor (87) and moves the peg link (83) to loading position;
- enabling the motor (32) mounted in the oscillator box (12) and operating the oscillating plates (25) and aligning the bobbins in the respective grooves (63) of the grooved plate (62);
- enabling the pusher motor (72) mounted in the bobbin pushing assembly (61) and pushing the bobbins placed in the grooves (63) of the grooved plate (62) into the peg (84) using the pusher plate (70);
- sensing the presence of bobbin in each groove (63) by using the sensing means (54);
- reactivating the pusher motor (72) if any one of the bobbins is not inserted into the peg (84) by transmitting the signal to the Control unit (151) through the sensing means (54);
- repressing the bobbin into the peg (84) and moving the pusher plate to the homing position after all the bobbins are properly inserted into the peg array;
- transmitting the signal to the Control unit (151) through the sensing means (54) and initiating the next cycle if all the bobbins are properly inserted into the respective pegs; and
- enabling the sensing disc sensor (93) and the dispenser unit sensor (94) and repeating the process cycle, and at least, ten peg links are loaded with empty bobbins before the doffing process.

The invention has been described as detailed above but various embodiments and variations are possible beyond the preferred embodiments disclosed in this document. All such variations and modifications as obvious to the skilled person is within the scope of this invention. , Claims:WE CLAIM:
1. A bobbin dispensing apparatus (111) for detachable doffing machine (1) with a bobbin placing assembly (141), comprising:
- a bobbin loading assembly (11) consists of an oscillator box (12) with plurality of oscillating plates (25) and a driving arrangement (31);
- a sensing device (51) consists of a plurality of sensing means (54) mounted on a holding bar (52), wherein said sensing means are mounted on the front plate (13) of the oscillator box (12);
- a bobbin pushing assembly (61) consists of a grooved plate (62) and a pusher mechanism (66), said bobbin pushing assembly (61) is rigidly mounted on the machine frame and positioned below the bobbin loading assembly (11);
- a bobbin dispensing assembly (81) consists of a dispenser unit (82) and said dispenser unit consists of an array of links (83) with plurality of pegs (84), wherein said dispenser unit (82) is mounted below the empty bobbin placing assembly (141); and
- a poking mechanism (101) consists of a frame (67), plurality of poking plates (102) mounted on a shaft (104) and a driving arrangement wherein said poking mechanism (101) is mounted below the frame (67) of the bobbin pushing assembly (61).

2. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said oscillating plate (25) consists of a guiding means (26) on either side and said guiding means (26) consists of an upper pin (27) and a lower pin (28).

3. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said oscillator box driving arrangement (31) consists of a driving motor (32) and a cam drive (35), said drive motor and cam drive are mounted in the bobbin loading assembly (11).

4. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said drive motor (32) is preferably a servo motor.

5. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said drive motor (32) consists of a drive pulley (33) and the cam drive (35) consists of a driven pulley (36), a driving belt (34) is used to connect the said drive and driven pulleys.

6. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, a cam block (40) with a set of cam blocks (40a, 40b) are provided to connect the oscillator box (12) and the driving arrangement (31), one end of said cam block (40) is connected with a cam pin (39) and another end said cam block consists of a pin (41).

7. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, an oscillating rod (42) with plurality of slots is connected with the pin (41) of the cam block (40), the upper pin (27) of each oscillating plate (25) is movably placed inside the slots provided in the oscillating rod (42), the lower pin (28) of each oscillating plate (25) is movably placed inside the slots (21) provided in the front plate (13) and back plate (14).

8. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said grooved plate (62) consists of plurality of grooves (63) and each groove is separated by the walls (64), each groove consists of a slot (65) and said slots are extended to the wall portion of the grooved plate (62).

9. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said pusher mechanism (66) consists of plurality of pusher plates (70), and a driving arrangement (71), each pusher plate (70) consists of a fin (81) and said pusher plates (70) are mounted on a movable platform (69) and operated by the driving arrangement (71).

10. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said dispenser unit (82) consists of at least thirty rows of links (83) mounted in endless chains (85a, 85b) and each link (83) consists of at least sixteen pegs (84).

11. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said dispenser unit (82) consists of a set of side frames (86a, 86b) and the endless chains (85a, 85b) with array of peg links are mounted on the side frames (86a, 86b) and driven by a driving motor (87) which is mounted in the side frame (86a).

12. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, a sensing disc (92) is mounted adjacent to a chain gear (89) and a sensing means (93) is mounted in the upper portion of the side frame (86a), said sensing means (93) is an inductive proximity sensor.

13. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, a sensing means (94) and sensing means (95) are mounted above the dispenser unit (82).

14. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said each poker plate (102) consists of an extended nose (103) portion, and the poker plates are lifted to an angle of 45° by the drive motor (105).
15. The Bobbin dispensing apparatus (111) as claimed in claim 1, wherein, said sensing means, driving motors, and driving arrangements mounted in the bobbin loading assembly (11), bobbin sensing device (51), bobbin pushing assembly (61), bobbin dispensing assembly (81), and the poking mechanism (101) are connected to a Control unit (151).

16. A method for operating the bobbin dispensing apparatus (111) as claimed in claim 1, said method comprising the steps of;
- Sensing the presence of bobbin in the peg link (83) using the sensor (94) mounted in the dispenser unit (82) and transmitting the signal to Control unit (151);
- enabling the dispenser unit drive motor (87) and moves the peg link (83) to loading position;
- enabling the motor (32) mounted in the oscillator box (12) and operating the oscillating plates (25) and aligning the bobbins in the respective grooves (63) of the grooved plate (62);
- enabling the pusher motor (72) mounted in the bobbin pushing assembly (61) and pushing the bobbins placed in the grooves (63) of the grooved plate (62) into the peg (84) using the pusher plate (70);
- sensing the presence of bobbin in each groove (63) by using the sensing means (54);
- reactivating the pusher motor (72) if any one of the bobbins is not inserted into the peg (84) by transmitting the signal to the Control unit (151) through the sensing means (54);
- repressing the bobbin into the peg (84) and moving the pusher plate to the homing position after all the bobbins are properly inserted into the peg array;
- transmitting the signal to the Control unit (151) through the sensing means (54) and initiating the next cycle if all the bobbins are properly inserted into the respective pegs; and
- enabling the sensing disc sensor (93) and the dispenser unit sensor (94) and repeating the process cycle, and at least, ten peg links are loaded with empty bobbins before the doffing process.