The invention that allows to perform, and more particularly, the roughing mill and is arranged between the spirit mill, wound and unwound, keeping the temperature of the hot-rolled bar state relates to a device for winding and unwinding of hot-rolled bar from molten steel a technical field relates to an apparatus.
BACKGROUND
[2]
1 is a schematic diagram showing a set of equipment for producing a hot-rolled steel coil from the steel.
[3]
In Figure 1 (a), the continuous casting machine, roughing mill (10) a step of directly producing a hot-rolled coil from the molten steel, as shown in, the spirit rolling mill 20, a down coiler 40 direct process, process characteristics of continuous casting due to the speed constraints, the roughing mill 10 and the spirit rolling mill 20, the winding / unwinding device 50, such as between there and the bar 1 (1) also, to remove the running speed difference (b) between them installation, and a separate equipment for maintaining a constant temperature in the bars (1) in the process is required. Wherein Fig 1 (a) and as a continuous operation to open the same operation, and also referred to as a batch operation is also an operation, such as 1 (b).
[4]
Prior to the equipment therefor is carousel (carousel) rotatable winding / unwinding devices or mandrel-less (mandrelless) wound / unwound there is a device, Figure 2 is a schematic view showing a conventional carousel rotatable winding / unwinding device, Figure 3 is a schematic diagram showing a conventional mandrel-less winding / unwinding device.
[5]
In the case of Figure 2, after the FIG. 2 (a) as shown, and the bars (1) wrapped around a first mandrel (54), at the same time, the second mandrel (55) is a bar (1) which has been wound unwound, a first mandrel 54 and second mandrel 55, at the same time carousel 56, the first mandrel (54) by rotating is placed in the position for unwinding a second mandrel 55 is is placed in the position for take-up, is changed after the winding and unwinding operations. Carousel as shown in Fig. 2 a rotatable mandrel bar (1) the area of ​​the partial winding / unwinding device of the mozzarella type is in direct contact with men deurel is the temperature drop caused by the contact of men deurel, tongpan of the bar (1) and the quality was causing a problem that prevents uniform. In addition, because of the bar (1) part of the temperature drop has occurred, mapping the mill 20 is a twist generated in or, it has also caused a problem that results in a modification of the thickness and shape. In addition, this equipment is operating in the facility is complicated the durability is decreased need, a failure was a frequent problem, the carousel (56) reduction in productivity due to the operation time of the rotation device for guiding a time bar (1) It was the result.
[6]
FIG Mentioned deurel-less winding / unwinding device 60, such as 3, the pinch roll 61 of the inlet a holding direction by the top or bottom of the bar (1) and the bar (1) in the winding curvature by a bending roll (63) bar (1), to the end of ridorok, dried it is a method of mounting the cradle roll 64.
[7]
These men deurel-less winding / unwinding device 60 and the bar (1) occurs, the temperature drop during the rolling time, and overall quality, resulting in deformation of the bar (1).
[8]
As well as, in the case of men deurel-less winding / unwinding device 60, after being wound on the cradle rolls 64, as shown in Figure 3 (a) is no space to wind the bar (1) for a trailing , it adopted a method that takes as shown in FIG. 3 (b), to move the take-up coil in the forward direction and then as shown in 3 (c) also, the volume bar (1) trailing the separate cradle roll 64. After winding the coil moves forward it was unwound to a record mill (20) direction.
[9]
Mentioned deurel-less winding / unwinding device 60 to take a method of moving a coil in the forward direction, these coils to move the take-up coil corresponding to the bar, a relatively high temperature, which has a weight of as many as 20 tons with a large hydraulic equipment this problem was supposed to exist, ah cry is more time consuming for cradle roll (64) moves, was caused by a problem in that the productivity is lowered.
[10]
Patent discloses a technique of the related art "The tensile strength of 590MPa class material deviation and excellent high-strength hot-rolled in the burring prepared STEEL (Publication No: 10-2012-0049992, see Fig. 2)" and the "manufactured by a continuous casting process, the combined casting and rolling equipment for pre-strip for carrying out the method and such a method for continuous rolling austenite (Publication No: 10-2010-0099202) "and also discloses a technique for the first half to the associated equipment.
Detailed Description of the Invention
SUMMARY
[11]
Hot rolled bar take-up and unwinding device according to the invention as conceived in order to solve the conventional problems as described above, has the following challenges like.
[12]
First, in the hot rolling step, it is intended to initiate a device which can maintain a constant temperature in the bars.
[13]
Second, in the hot rolling step, to the speed difference between the roughing mill and the rolling mill thought, by the winding / unwinding, it is intended to start the apparatus so that owe a disruption in the production process.
[14]
The challenge of the present invention is not limited to those mentioned above, other challenges which are not mentioned will be understood clearly to those skilled in the art from the following description.
Problem solving means
[15]
Hot rolled bars wound and unwound according to the present invention has the following problem solving means as to the problem to be solved by the above.
[16]
Hot rolled bar take-up and unwinding device according to the invention is disposed between a device for taking up (coiling) and unwinding (uncoiling) a bar (bar) between the time of hot rolling roughing mill and spirit mill, the roughing mill and the spirit mill is, the receiving date and time bar on the inside, and sealed to maintain a constant temperature by heating the bar (furnace); Is arranged in front to the closed, the pinch roll unit (pinch rolling unit) to control the up and down the direction of movement of the bar; From the pinch roll unit, a bending unit (bending unit) that receives the service bar curved in a predetermined direction; And it may be characterized in that it comprises a cradle-ring unit (cradling unit) to which the take-up to accommodate the bar is curved by the bending unit, or by unwinding discharged into the closed to the outside depending on the direction of rotation.
[17]
Roneun the sealing of the hot-rolled steel bar wound and unwound according to the present invention, is provided in the interior with the seal, the temperature sensing unit for sensing the internal temperature in the closed; Heating unit applies heat to the interior in the closed; And it may be characterized in that it receives the temperature information of the internal to the sealed from the temperature sensing unit comprises a control unit which controls the heating unit to a temperature within the hermetically sealed to maintain a certain range.
[18]
The pinch roll unit of a hot-rolled steel bar wound and unwound according to the present invention, the upper pinch roll which is located at an upper side of the bar; And a lower pinch roll positioned in the lower part of the bar, at least one of the upper pinch roll or the lower pinch rolls may be characterized in that the pressure bar.
[19]
The pinch roll unit of a hot-rolled steel bar wound and unwound according to the present invention, the upper pinch roll or the lower pinch at least one of the rolls that have a travel distance (T) to the front or back, control the up and down the direction of movement of the bar that may be characterized.
[20]
The bending unit of the hot-rolled steel bar wound and unwound according to the present invention, the upper bending unit which is located on the upper from the pinch roll unit; And it may be characterized in that it comprises a lower bending unit located below from the pinch roll unit.
[21]
Each of the upper bending unit, and the lower the bending unit of the hot-rolled bar take-up and unwinding device according to the invention, the rolling by the two rollers in contact with the surface of the bar, the one roller disposed between the two rollers the that to roll in contact with the other surface of the bar, which curved toward the other side the bar can be characterized.
[22]
The cradle-ring unit of the hot-rolled bar take-up and unwinding device according to the invention, the top ring unit cradle for mounting the bar by the pinch roll units toward the top; And it may be characterized in that it comprises a lower ring cradle unit for mounting the bar toward the lower portion by the pinch roll units.
[23]
Each of the top ring unit and a cradle, the cradle lower ring unit of the hot-rolled steel bar wound and unwound according to the present invention, including a plurality of cradle rolls, can be characterized by mounting a curved bar.
[24]
Hot rolled bar take-up and unwinding device according to the present invention, it is possible to bar a moving direction is vertically adjustable from the pinch roll unit further comprises a guide unit for guiding to the bending unit and the cradle ring unit.
[25]
The guide unit of the hot-rolled steel bar wound and unwound according to the present invention, air sending plate to attract the bar to switch to the upper direction from the pinch roll unit to the upper bending unit; And it may be characterized in that it comprises an upper landing plates to attract the bar bent by the upper bending unit with the upper cradle ring unit.
[26]
The guide of the hot-rolled steel bar wound and unwound according to the present invention unit, is placed on the pinch roll unit and the same horizontal line, further comprising: a supporting plate for the outlet takes them to the to the closed the bar, the upper cradle ring unit , by modulation of the direction of rotation, the volume take-up a mounting bar to the exit to the closed shipping may be characterized.
[27]
The guide unit of the hot-rolled steel bar wound and unwound according to the present invention, di sending plate to attract the bar to switch to the lower direction from the pinch roll unit to the lower bending unit; And it may be characterized in that it comprises a lower landing plates to attract the bar is curved by bending in the lower unit with the lower cradle, the ring unit.
[28]
The guide unit of the hot-rolled steel bar wound and unwound according to the present invention, by connecting the outlet to the lower cradle, the ring unit and the sealing, the eksi putting plate to attract the bar to be unwound from the lower cradle ring unit to exit to the closed further comprising the lower ring cradle unit, by modulation of the direction of rotation, the volume take-up a mounting bar to the exit to the closed shipping may be characterized.
Effects of the Invention
[29]
Hot rolled bar take-up and unwinding device according to the invention of the above construction has the following advantages.
[30]
First, it provides an effect to cancel out the difference in speed between the roughing mill and the rolling mill thought.
[31]
Second, bending of the bar and then, it is possible to prevent the cooling part of the bar, the bar that minimizes the area that directly contacts the bent bar, and provides the effect of the coil is uniform quality.
[32]
Third, the bars within a sealed consisting of these take-up and unwound and provides that to keep the temperature of the bar constant effect.
[33]
Effects of the present invention is not limited to those mentioned above, which are not mentioned other effects will be understood clearly to those skilled in the art from the following description.
Brief Description of the Drawings
[34]
1 is a schematic diagram showing a set of equipment for producing a hot-rolled steel coil from the steel.
[35]
Figure 2 is a schematic diagram showing a conventional carousel rotatable winding / unwinding device.
[36]
Figure 3 is a schematic diagram showing a conventional mandrel-less winding / unwinding device.
[37]
Figure 4 is a side sectional view showing a hot-rolled bar take-up and unwinding device according to an embodiment of the present invention.
[38]
5 shows a hot rolling to the winding and unwinding device according to the present invention, except for the hot-rolled bar shown in FIG.
[39]
6 is an exemplary diagram showing a range of operation of the pinch roll unit corresponding to one component of the present invention.
[40]
7 is an exemplary diagram showing the working principle of hot-rolled bar take-up and unwinding device according to an embodiment of the present invention.
Best Mode for Carrying Out the Invention
[41]
Hot rolled bar take-up and unwinding device according to the present invention will be described in a variety of changes can be added and illustrated in the figures a number of embodiments the bar, which may have certain embodiments and detailed in the Detailed Description. This, however, is by no means to restrict the invention to the specific embodiments, it is to be understood as embracing all included in the spirit and scope of the present invention changes, equivalents and substitutes.
[42]
Hereinafter, with reference to the drawings, a hot-rolled steel bar wound and unwound according to the present invention will be described in detail.
[43]
Figure 4 is a side sectional view showing a hot-rolled bar take-up and unwinding device according to an embodiment of the present invention. 5 shows a hot rolling to the winding and unwinding device according to the present invention, except for the hot-rolled bar shown in FIG. 6 is an exemplary diagram showing a range of operation of the pinch roll unit corresponding to one component of the present invention. 7 is an exemplary diagram showing the working principle of hot-rolled bar take-up and unwinding device according to an embodiment of the present invention.
[44]
, Hot rolled bar take-up and unwinding device 100 according to the present invention is a sealed (furnace, 110); A pinch roll unit (pinch rolling unit, 120); A bending unit (bending unit, 130, 150); And a cradle ring unit (cradling unit, 140, 160).
[45]
First, a hot-rolled steel bar wound in accordance with the present invention and the unwinding apparatus 100, the roughing mill 10 and the spirit mill winding (coiling) the bar (1) between 20 as or unwound shown in Figure 1 (uncoiling ), with a device for, the location of the bar passing through the bar (1) and a spirit rolling mill 20, which is disposed between the roughing mill 10 and the spirit rolling mill 20, passes through the the roughing mill 10 It performs such acts to compensate for the difference in speed.
[46]
A seal (110) is a configuration in which the interior is closed, by applying heat to the interior, so as to maintain a constant internal temperature.
[47]
As to the sealing unit 110 shown in Figure 4, it consists in that the inlet (111) and sealing (sealing) the wall (wall), except for the outlet 112 and prevents the outflow of heat from inside to the outside.
[48]
Through an inlet 111 to a sealed 110 bar (1) is the position, the bar inside the bar (1) through the outlet (112) there is to exit, a sealed 110 (1) is described below is to be wound or unwound by the various equipment that make, it is for this series of process, maintaining a constant temperature by the thermal energy provided by a seal 110.
[49]
A seal 110 (not shown), a temperature sensing unit as the subcomponents for the supply of thermal energy as described above; A heating unit (not shown); And it may include a control unit (not shown).
[50]
First, as the temperature sensing unit is a kind of the electronic thermometer is provided inside a sealed 110, the temperature inside a sealed 110 is to sense in real time or a certain time interval, in this sealing 110 the temperature of the internal a it can be transmitted to other equipment.
[51]
The heating unit is a type of heating apparatus, by using an energy source such as electricity, gas, diesel, exert thermal energy inside a sealed 110.
[52]
The heating unit is a bar, which must be controlled by the control unit to be described later may also be possible to networking with other machinery or equipment, the amount of heat energy supplied by the external device or the control device.
[53]
The control unit is to control the heating unit as a kind of control, a sealed from the temperature sensing unit 110 receives the temperature information of the inside, so that it is based on the internal temperature of the sealing unit 110 to maintain a constant range.
[54]
The temperature of a range, taking into account the range of temperature should bar (1) is held, a numerical value range of possible self-random set of carrying out the invention.
[55]
Pinch roll unit 120, as illustrated in Figures 4 to 6, the front side of a sealing (110), more particularly, is disposed in front of the inlet 111, a bar provided by the roughing mill (10) ( 1) controls the up and down moving direction of the.
[56]
Pinch roll unit 120 is interposed between the bar (1), there is the upper and lower pinch roll presses 121 and 122 and rolling by the upper pinch roll which is located in the upper part of the bar (1, 121); And it may comprise a lower pinch roll 122 which is located in the lower part of the bar (1), and these upper pinch roll 121; And at least one of the lower pinch roll 122 is to urge the bar (1).
[57]
The pinch roll unit 120, as shown in Figure 5 if the guide to face the bar (1) also, but if the straight guide the bar (1) in the horizontal direction to the upper portion from its horizontal position (Fig. 6 (c)), and also (if the guiding face-1) to the lower portion from its horizontal position (FIG. 6 (b) reference bar) also exist.
[58]
To this end, the upper pinch roll constituting the pinch roll units (120, 121); And at least one of the lower pinch roll 122 can have a travel distance (T) to the front or back, it is doing this, the up or down if the bar (1) determines.
[59]
Figure 6 is the lower pinch roll 122 is illustrated as carrying the movement forward and backward. Of course, unlike the Fig. 6, the upper pinch roll 121 may determine whether up or down the bar (1) by moving forward and backward.
[60]
As shown in Figure 6 (a), if the position where the upper pinch roll 121 and the lower pinch roll 122 so as to face each other, the out proceeds straight to the traveling direction of the bar (1) horizontal.
[61]
As shown in Figure 6 (b), the lower pinch roll 122 is compared with the upper pinch roll (121), T / 2 by the retraction that is, the upper pinch roll (121 move away sealed from 110 ) when the lower pinch roll 122 is to urge the bar (1), bars (1) to proceed with the downlink.
[62]
On the other hand, as shown in Figure 6 (c), the lower pinch roll 122 is compared with the upper pinch roll (121), T / 2 by a advances that is, the upper pinch roll moves to be close to a sealed 110 When the (121) and the lower pinch rolls 122 presses the bar (1), bars (1) to proceed with upward.
[63]
Receiving provide bar 1 from the bending unit (bending unit, 130, 150) is a pinch roll unit 120 has a function of curvature (彎曲) in a predetermined direction.
[64]
A bending unit (130, 150) has an upper bending unit (130); And there is as a lower bending unit 150, the upper bending unit 130 is located in the upper portion than the horizontal position of the pinch roll unit 120, a horizontal position of the lower bending unit 150, the pinch roll unit (120) It is than located in the lower portion.
[65]
In the case of 6 (b) is also described above, the bar 1 is the downward and toward the lower bending unit 150, FIG. 6 (c) in the case of the bar (1) is the upstream upper bending unit It is directed to (130).
[66]
Each of the upper bending unit 130 and a lower bending unit 150, and the two rolls in contact with one side of the bar (1, 131, 151) are present, one of the rolls in contact with the other surface of the bar (1) ( 132, 152) are present.
[67]
Two rolls (131, 151) of a roll (132, 152) is as described arrangement is, as shown in Figure 4, these two rolls (131, 151) and one roll (132, 152) between the the pressure across the bar (1), thereby bending the bar (1).
[68]
In a lower surface of it is desired, bars (1) upper surface of the two rolls (131, 151) are brought into contact and pressed, and the bar (1) of which also the equipment disclosed in the four down-curved in the bar (1) rolls (132, 152) it would be desirable that the pressure to the contact.
[69]
The bar (1) and bent by the bending unit (130, 150) there is a curved to have a suitable radius of curvature, this radius of curvature is the bar (1) that has passed through the bending unit (130, 150), bent to be described later It is seated in the cradle ring unit (140, 160) thereby bent so as to have a curvature radius enough to be wound.
[70]
Cradle ring unit (140, 160), a bending unit, and also the take-up to accommodate the bar (1) bent from the (130, 150), on the contrary closed with 110 shipping volumes be exported to the outside depending on the direction of rotation control airway do.
[71]
As described above, the bar 1 is the direction of downward or upward from the pinch roll unit 120, via the bending unit (130, 150), the cradle ring unit (140, 160) in this order to the traveling path is exactly the to be maintained, due to the bar (1) the weight and vibration of the equipment, can result in disruptions in the traveling path.
[72]
Thus, according to the present invention, hot rolled bar take-up and unwinding device 100 may further include a guide unit (170).
[73]
As a configuration in which the guide unit to Ding 170 to turn the pinch roll unit from the traveling direction that the bar (1) and the bending unit (130, 150) adjusting the upper and lower 120 and the cradle ring unit (140, 160) Guy, bar can be made into a shape such as (1) and at all times or temporarily plate (plate) in contact with.
[74]
As shown in Figure 4 and Figure 6, the guide unit 170 is bent by the air sending plate 171 and the upper bending unit (130) to attract the upper bending unit (130) from the pinch roll unit (120) that the bar (1) so as to lead them to the upper ring cradle unit 140 may include an upper landing plate 173.
[75]
In addition, the guide unit 170 is placed on the same horizontal line and the pinch roll unit (120), further comprising a bar (1) in a closed (110) to the outlet (112) supporting the plate 171 to be attracted to the exterior in this case, the upper ring cradle unit 140 is able to invoke a volume bar seated, via the reverse rotation of the roll 141 and the take-up (1) to the outlet (112) of a sealed 110.
[76]
The guide unit 170 may include a de-sending plate 174 to attract the bar (1) in a conversion to lower from the pinch roll unit 120, the direction of the lower bending unit 150, and a lower bending unit 120 by it may include a lower landing plate 175 to attract the curved bar (1) to the lower ring cradle unit 160.
[77]
Then, the guiding unit 170 has a lower cradle by connecting the outlet 112 of the ring unit 160, and a sealing (110), the bar (1) being unwound from the lower cradle, the ring unit 160 is a sealed (110 ) outlet eksi floating plate that takes them to the (exiting plate, 176), the lower cradle ring unit 160 has a bar (1), the seat being wound by the reverse rotation of the roll 161 in a closed (110, including the ) and to the unwinding in the outlet.
[78]
The scope of the present invention is determined by the items described in the claims, the brackets used in the claims are not disclosed for selectively limiting, was used for clarity of the components, described in the parentheses is also interpreted as essential components It should be.
[79]
[80]
Reference Numerals
[81]
1: Hot-rolled bars
[82]
10: roughing mill
[83]
20: Thought Mill
[84]
30: mold
[85]
40: Say nose down
[86]
50: carousel rotatable winding / unwinding device
[87]
60: mandrel-less winding / unwinding device
[88]
100: hot rolling bar take-up and unwinding device according to the invention
[89]
110: a sealed
[90]
111: inlet
[91]
112: outlet
[92]
120: pinch roll unit
[93]
121: upper pinch roll
[94]
122: lower pinch roll
[95]
123: outlet horizontal roll
[96]
130: upper bending unit
[97]
131, 132: upper bending roll
[98]
140: upper cradle ring unit
[99]
141: upper cradle roll
[100]
150: the lower the bending unit
[101]
151, 152: lower bending roll
[102]
160: lower cradle ring unit
[103]
161: bottom roll cradle
[104]
170: guide unit
[105]
171: the supporting plate
[106]
172: Air sending plate
[107]
173: an upper landing plate
[108]
174: D. sending plate
[109]
175: lower plate Landing
[110]
176: eksi floating plates

Claims
[Claim 1]
In the bar (bar) between the roughing mill during hot rolling and spirit mill to the take-up (coiling), and an apparatus for unwinding (uncoiling), is arranged between the roughing mill and the spirit mill, the receiving date and time bar therein, wherein sealed to heated bar keep a constant temperature (furnace); disposed at the front to the closed, upper and lower pinch roll unit (pinch rolling unit) to control the direction of movement of the bar; from the pinch roll unit, receiving offer the bar a bending unit (bending unit) of curvature in a given direction; And apparatus characterized in that it comprises a cradle-ring unit (cradling unit) to which the take-up to accommodate the bar is curved by the bending unit, or by unwinding discharged into the closed to the outside depending on the direction of rotation.
[Claim 2]
The method of claim 1 wherein roneun the closed, is provided in the interior with the seal, the temperature sensing unit for sensing the internal temperature in the closed; heating unit applies heat to the interior in the closed; And the apparatus characterized in that it receives the temperature information of the internal to the sealed from the temperature sensing unit comprises a control unit which controls the heating unit to a temperature within the hermetically sealed to maintain a certain range.
[Claim 3]
The method of claim 1, wherein the pinch roll unit, the upper pinch roll which is located at an upper side of the bar; And a lower pinch roll positioned in the lower part of the bar, at least one of the upper pinch roll or the lower pinch roll unit, characterized in that for pressing the bar.
[Claim 4]
4. The method of claim 3 wherein the pinch roll unit, the upper pinch roll or at least one of said lower pinch rolls is having a movement distance (T) to the front or back, characterized in that for adjusting the up and down the direction of movement of the bar Device.
[Claim 5]
The method of claim 1, wherein the bending unit comprises an upper bending unit located on the upper from the pinch roll unit; And the device comprises a lower bending unit located below from the pinch roll unit.
[Claim 6]
The method of claim 5, wherein each of the upper bending unit, and the lower the bending unit is in contact with and rolling by the two rollers in contact with the surface of the bar, the one roller disposed between the two rollers the other surface of the bar and, in a rolling device which comprises a curved toward the other side the bar.
[Claim 7]
The method of claim 5, wherein the cradle unit includes a ring, the top ring unit of the cradle mounting bar by the pinch roll units toward the top; And apparatus comprising a lower ring cradle unit for mounting the bar toward the lower portion by the pinch roll units.
[Claim 8]
The method of claim 7 wherein said top ring unit and a cradle unit, comprising a step of mounting each of the lower cradle ring unit, including a plurality of cradle rolls, curved bars.
[Claim 9]
The method of claim 7, wherein the apparatus comprises a device for which the upper and lower travel direction from the pinch roll unit control bar, characterized in that it further comprises a guide unit for guiding to the bending unit and the cradle ring unit.
[Claim 10]
10. The method of claim 9, wherein the guide unit includes a sending control plate to attract the bar to switch to the upper direction from the pinch roll unit to the upper bending unit; And apparatus characterized in that it comprises an upper landing plates to attract the bar bent by the upper bending unit with the upper cradle ring unit.
[Claim 11]
11. The method of claim 10, wherein the guide unit, is placed on the pinch roll unit and the same horizontal line, the bar further comprises a supporting plate that takes them to the exit to the closed, the upper cradle ring unit is adjusted in the rotating direction , the apparatus mounting the take-up bar, characterized in that the books shipped to the exit to the closed by.
[Claim 12]
10. The method of claim 9, wherein the guide unit comprises: sending de-plate to attract the bar to switch to the lower direction from the pinch roll unit to the lower bending unit; And apparatus comprising a lower landing plates to attract the bar is curved by bending in the lower unit with the lower cradle, the ring unit.
[Claim 13]
13. The method of claim 12, wherein said guide unit comprises, by connecting the outlet to the lower cradle, the ring unit and the sealing, the eksi putting plate to attract the bar to be unwound from the lower cradle ring unit to exit to the closed further, the lower cradle ring unit, by modulation of the direction of rotation, the seating of the winding bar device, characterized in that the outlet is in the closed volume to shipment.