JP6679968B2 - Winding device - Google Patents

Description

  The present invention relates to a winding fastening having a seaming turret provided with a can placing unit for placing a can, a chuck unit provided to face the can placing unit, and a seaming roll for fastening a lid around the can. Regarding the device.

Conventionally, a seaming turret provided with a can placing unit for placing a can filled with a beverage or the like, a chuck unit provided to face the can placing unit, and a seaming roll for winding a lid around the can. A tightening device having is known.
A known winding device includes, for example, as shown in Patent Document 1, a seaming turret (1) that performs a process of winding a can and a lid, and a carry-in conveyor (supply that supplies a can before winding to the seaming turret). Conveyor 7), a lid transport turret (supply turret 3) of a lid supply unit that supplies a lid, a discharge turret (discharge turret 5) that discharges the can after winding from the seaming turret, and a can from the discharge turret. It has a carry-out conveyor (discharge conveyor 8) for carrying out to the outside.

The seaming turret, discharge turret, and lid transport turret are provided with pockets (fitting recesses 2, 4, 6) for accommodating and transporting cans and lids, respectively, on their outer peripheral portions.
In each pocket of the seaming turret, a can placing unit (lifter 17) for placing a can, a chuck unit (seaming chuck device 10) provided to face the can placing unit, and a lid for the can are placed. Seaming rolls (18, 19) for tightening are provided.
In the winding device configured as described above, the speed and timing of each turret and each conveyor are adjusted by gears, and the operation of the can placing unit, the chuck of the chuck unit and the seaming roll arranged in each pocket is controlled by the gear. By interlocking with the rotation of the seaming turret by a cam mechanism or the like, it is possible to continuously wind and fasten a can and a lid which are conveyed at high speed.

JP-A-62-244537

Such a known winding device is provided with a lid supply unit including a lid supply device for supplying a lid and a lid transport turret, and a carry-in conveyor provided with an attachment for supplying a can, and the lid and the can are seaming turrets. Is supplied to.
However, in these supply means, if the timing of the lid supplied from the lid supply device and the pocket of the lid transport turret shifts, the lid is deformed or scratched, and if the timing of the carry-in conveyor and the lid transport turret shifts, the can and the lid move. Poor winding tightening due to misalignment of position, and dent of the can occur if the timing of the carry-in conveyor and the seaming turret are misaligned.
Since these supply means are connected by the gear and the timing belt by one drive source, the pulleys for rotationally driving the gear and the timing belt are respectively adjusted to perform the timing adjustment. Working time becomes long.
Further, even if the timing adjustment is performed, jamming of the can and expansion of the carry-in conveyor (conveyance chain) may occur, and the timing may shift, and in this case also, it takes time to adjust the timing.

  The present invention solves the above-mentioned problems, and in a lid supply device, a lid transport turret, and a carry-in conveyor, the lid and the can are delivered at appropriate timings, and the deformation of the lid, the damage, the depression of the can, and the like are prevented. It is an object of the present invention to provide a winding device capable of achieving the above.

  A tightening device according to the present invention includes a can mounting unit that mounts a can, a chuck unit that is provided to face the can mounting unit, and a seaming roll that tightens a lid around the can. A winding fastening device having a ming turret, comprising a carry-in conveyor for supplying cans to the seaming turret, a lid supply unit for supplying a lid and a lid supply device for supplying a lid, and the carry-in conveyor, lid supply The device and the lid transport turret each have a drive source that is independently controlled, thereby solving the above problem.

  According to the winding device of the present invention, the carry-in conveyor, the lid supply device, and the lid transport turret each have a drive source that is independently controlled, so that the carry-in conveyor, the lid supply device, and the lid transport turret are Since each can be operated at an appropriate timing, it is possible to prevent the lid from being deformed, scratched, and the can being dented.

Further , the rotation of the plate of the can placing unit and the chuck of the chuck unit, and the tightening operation of the seaming roll are performed by independently controlled drive sources, thereby starting and accelerating the rotation of the plate and the chuck. The timing and the timing of the winding tightening operation can be individually and optimally adjusted by controlling the respective drive sources without stopping the operation, so that the adjustment work can be easily performed in a short time.
According to the configuration of the present invention , since the drive source is the servo motor, the adjustment can be performed by an electric control command and the feedback control can be performed, and the adjustment work can be performed easily in a short time. It becomes possible to do it.
According to the configuration of the third aspect , the seaming turret has the detection means for detecting the position of the pocket, and the conveyance path of the carry-in conveyor has the pitch sensor for detecting the attachment of the carry-in conveyor. The adjustment work can be performed more easily, and the error in the position of each pocket or attachment and the change in the position during operation can be automatically detected and adjusted, improving the tightening accuracy. Therefore, it is possible to speed up the winding tightening process.
According to the configuration described in claim 4 , since the pressing mechanism of the can placing unit is configured to operate by fluid pressure, a constant pressing force can be obtained, so that adjustment is extremely easy and during operation. In particular, when the height of the can decreases slightly during winding, the axial load does not change even if the error of the actual can height reduction is absorbed by the pressing mechanism, and the tightening accuracy is improved. It is possible to improve and speed up the winding tightening process.
According to the structure of the present invention , since the pressing mechanism has the diaphragm that seals the fluid pressure, the sliding sealing member is unnecessary, and there is no sealing resistance when moving up and down, and the plate is smoothly moved up and down. be able to.
According to the sixth aspect of the present invention , the chuck unit has the rotary vane pump forcibly discharging the lubricating oil, so that the accumulation of the lubricating oil on the upper part of the oil seal is minimized and the chuck seal unit prevents the oil seal from rotating. It is possible to prevent the lubricating oil from leaking and being damaged.

Explanatory drawing of the conveyance path of the winding device which concerns on one Embodiment of this invention. An explanatory view of a can placement unit, a chuck, and a seaming roll of a winding device concerning one embodiment of the present invention. The expansion explanatory view of the can mounting unit of the winding apparatus which concerns on one Embodiment of this invention. An enlarged explanatory view at the time of winding a can. An enlarged explanatory view at the time of handling of a lid. Explanatory drawing of the conveyance path of the winding device which concerns on other embodiment of this invention. An enlarged explanatory view of other forms of a press mechanism of a can placement unit. The expansion explanatory view of the other form of a chuck unit. Sectional drawing of FIG.

As shown in FIG. 1, a winding device 100 according to an embodiment of the present invention includes a seaming turret 101 for performing a winding process of a can C and a lid F, and a can C before winding on the seaming turret 101. A feed-in conveyor 102 for feeding, a lid feeding unit 104 having a lid feeding device 105 for feeding the lid F and a lid carrying turret 106, a discharge turret 107 for unloading the can CM after winding from the seaming turret 101, and a can. Further, a carry-out conveyor 108 for carrying out the CM from the discharge turret 107 to the outside is provided.
The seaming turret 101, the discharge turret 107, and the lid transport turret 106 are provided with pockets P for accommodating and transporting the cans C, CM, and the lid F, respectively, on the outer peripheral portion, and the carry-in conveyor 102 has a can C. An attachment 103 for individually engaging with and transporting is provided.
The rotation speeds of the seaming turret 101, the discharge turret 107, and the lid transport turret 106, the moving speed of the attachment 103 of the carry-in conveyor 102, and the interlocking timing of each pocket P and the attachment 103 are the cans C and CM between the turrets and the conveyors. It is designed to be adjustable so that the lid F can be smoothly delivered.

  As shown in FIG. 2, the seaming turret 101, which performs the process of winding the can C and the lid F, faces the can mounting unit 110 that mounts the can C in each pocket P and the can mounting unit 110, respectively. And a seaming unit 130 having a seaming roll 131 for winding the lid F around the can C.

The seaming turret 101 is rotationally driven by the drive motor 151, and the pocket position detection encoder 155 is configured to detect the pocket position from the rotational phase thereof.
In addition, a pitch sensor S including a photoelectric tube, a proximity switch, a laser, etc. for detecting the position of the attachment 103 of the carry-in conveyor 102 is provided on the transport path of the carry-in conveyor 102, and the seaming turret 101 is output by the pitch sensor S. The position of the attachment 103 with respect to the pocket P of the lid transport turret 106 is controlled.
By detecting and controlling in this way, it becomes possible to perform the adjustment work more easily, and automatically detect and adjust the error in the position of each pocket or attachment and the change in the position during operation. It is possible to improve the tightening accuracy and to speed up the winding process.

The lid supply device 105, the lid transfer turret 106, and the carry-in conveyor 102 are independently controlled by a drive motor 153 of the lid supply device 105, a drive motor 152 of the cover transfer turret 106, and a drive motor 154 of the carry-in conveyor 102. Source driven.
By driving the carry-in conveyor 102, the lid supply device 105, and the lid transport turret 106 by drive sources that are independently controlled, the operation timing can be optimally adjusted individually without stopping the operation by the operation panel or the like. It is possible to easily perform adjustment work in a short time in order to prevent deformation of the lid, scratches, dents in the can, and winding failure due to timing deviation.

  A servo motor is adopted for each motor, and the speed and timing can be adjusted individually, and the speed and timing fluctuations of the seaming turret 101 can be tracked according to the output of the pocket position detection encoder 155. It is configured.

Similarly, the rotation of the plate 112 and the chuck 121 uses the drive motor 157 of the can placing unit 110 and the drive motor 156 of the chuck 121 as drive sources, and the roll swing shaft 132 is the drive motor 158 of the roll swing shaft 132. Are used as drive sources, and are driven by drive sources that are independently controlled.
In this way, by driving the drive sources that are controlled independently of each other, the drive sources are controlled with respect to the start of rotation and acceleration of the plate 112 and the chuck 121, the timing of the winding operation, and the pressing amount. As a result, individual adjustments can be made optimally without stopping the operation using the operation panel or the like, and the adjustment work can be easily performed in a short time.

Furthermore, by using a servo motor as the drive source, adjustment can be performed by an electric control command, and feedback control is also possible, so that the adjustment work can be easily performed in a short time.
The discharge turret 107 and the carry-out conveyor 108 (not shown in FIG. 2) deliver only the can CM after winding, and a certain speed and timing deviation are allowed. Therefore, the drive motor 151 of the seaming turret 101 is allowed. An appropriate drive source may be used, such as mechanically driving from the above via a transmission mechanism.

The can placing unit 110 includes a plate 112 on which the can C is placed and a pressing mechanism 111 that elastically presses the plate 112 upward.
As shown in FIG. 3, the pressing mechanism 111 is configured such that a piston 114 having a plate 112 fixed therein is inserted into a cylinder space 113, and a pressurized fluid such as compressed air is supplied into the cylinder space 113. Then, the plate 112 is elastically pressed upward.
In this way, since the pressing mechanism 111 operates with fluid pressure such as compressed air, the fluid pressure to be supplied only needs to be adjusted by the supply source in order to obtain a constant axial load, and the cans provided in each pocket P can be adjusted. It is not necessary to individually adjust the pressing mechanism 111 of the mounting unit 110, and the adjustment work can be easily performed in a short time.
Further, by adjusting the axial load with fluid pressure, it is possible to prevent buckling of the can C without applying an impact load.
Furthermore, it is possible to apply a constant load following the reduction of the can height during winding, improve winding accuracy and obtain stable winding dimensions, and speed up the winding process. Becomes

Further, the can placing unit 110 is moved up and down by an up-and-down moving mechanism 115 of the can placing unit 110 including an up-and-down moving cam 116 and an up-and-down moving cam follower 117.
The up-and-down moving cam 116 is fixedly provided, and when the seaming turret 101 rotates, the up-and-down moving cam follower 117 moves according to the cam profile, and the can placing unit 110 moves up and down according to the position.
By having the vertically moving mechanism 115 for vertically moving the can placing unit 110, the vertically moving mechanism 115 is used together with the pressing mechanism 111 to move the can C placed on the can placing unit 110 to the chuck 121. It can be simplified as a mechanism for only raising the temperature.
The vertically moving mechanism 115 of the can placing unit 110 is configured so as not to operate during the tightening operation of the seaming roll, so that the above-described operation of the pressing mechanism 111 during the tightening operation is reliably and stably performed. It becomes possible to do.

The centering of the lid by the chuck 121 described above is configured such that the chuck outer peripheral portion 126 is fitted into the lid F to perform centering as shown in FIG.
The chuck 121 is rotatably and fixedly provided. As shown in the figure, the chuck 121 does not have a conventional knockout pad, and only the chuck is brought into contact with the lid F so that the lid F with respect to the can C is removed. The center ring is used and the lid is pressed down.
As described above, by centering the lid F only by the chuck 121, the position of the lid F can be easily corrected, the buckling of the can C can be prevented without applying an unbalanced load, and the can C can be thinned. It is possible to plan.
Further, the chuck 121 is rotatably and fixedly provided, and as described above, the plate 112 of the can placing unit 110 and the chuck 121 are rotated by the controllable drive source described above.

The center ring of the lid F is replaced with the above-mentioned chuck, and as shown in FIG. 5, a negative pressure suction hole 125 of the lid suction means is provided in the center portion thereof, and the center ring is sucked by the chuck 121. After that, the can placing unit 110 may be lifted to place the lid F on the can.
In this way, by adsorbing the lid F to the chuck 121 in advance and increasing the fitting force, the winding tightening failure due to the slip is prevented, and therefore, the axial load applied to the can C can be reduced and the can C can be reduced. It is possible to prevent buckling and reduce the wall thickness.
Then, when the lid F is placed on the can C, the lid F is reliably centered by the suction by the chuck 121, so that buckling due to an unbalanced load is prevented.
Further, by controlling the rotation of the chuck 121, the rotation of the lid F when sucking the lid 121 can be controlled, and the lid F can be sucked by the chuck in a stable and reliable manner.
Further, by controlling the rotation of the plate 112 of the can placing unit 110, the rotation of the plate 112 and the chuck 121 is controlled to a low speed in combination with the control of the rotation of the chuck 121 of the chuck unit 120, and the deviation of the rotation center is prevented. By reducing the amount, it is possible to prevent the can C from being dented or scratched due to contact between the can C and the lateral guide members or the like.
Also in this case, as described above, the plate 112 and the chuck 121 of the can placing unit 110 are rotated by the controllable drive source described above.

The operation of the winding device 100 configured as above will be described.
The can C before winding the lid F is engaged with each attachment 103 of the carry-in conveyor 102 and conveyed, and heads toward the seaming turret 101.
On the other hand, the lids F are cut out one by one from the lid feeding device 105 and transferred to the respective pockets P of the lid transport turret 106, and are rotated toward the seaming turret 101 by the rotation of the lid transport turret 106.
The speeds and timings of the carry-in conveyor 102 and the lid transport turret 106 are adjusted according to the speed and timing of the seaming turret 101 so that the centers of the can C and the lid F coincide with each other at the confluence point G. The lid F is placed on the can C placed on the plate 112 by raising the can placing unit 110 whose rotation is controlled by the (servo motor) 157 at the confluence point G.

After that, the can mounting unit 110 further rises, the chuck 121 is fitted into the lid F and centering of the lid F is performed (see FIG. 4), and the can C on which the lid F is mounted is pressed. The plate 112 and the chuck 121 are clamped against a pressing force of the mechanism 111 with a constant axial load required for winding tightening.
When the can C having the lid F placed thereon is pinched, a mechanism that elastically presses the plate 112 upward with a pressure fluid such as compressed air is used as the pressing mechanism 111. Since a constant pressing force can be obtained and a constant pressing force can be obtained regardless of the pressing down amount of the plate 112, adjustment is extremely easy and does not change during operation.
A mechanical spring may be used as the pressing mechanism 111 as long as the pressing force can be easily adjusted in terms of accuracy and speed.

When the seaming turret 101 is further rotated, the plate 112 and the chuck 121 are accelerated to the number of rotations required for winding tightening before the sandwiched can C reaches the winding tightening section E shown in FIG.
A mechanical mechanism may be used as a drive source for rotation of the plate 112 and the chuck 121 in order to interlock with a rotation phase of the seaming turret 101, but a servo motor independently controlled is used as a drive source. By doing so, the start of rotation of the plate 112 and the chuck 121 and the timing of acceleration can be independently controlled, and optimal adjustment can be made individually without stopping the operation, adjustment work can be easily performed in a short time, and fluctuations during operation can be performed. Can also deal with.
Further, by controlling the start of rotation of the plate 112 and the chuck 121 and the timing of acceleration, the can C with the lid placed thereon is lifted and lowered by the plate 112 of the can placing unit 110 that rotates, and placed on the can C. When fitting the self-rotating chuck 121 to the lid F, the rotation of the plate 112 and the chuck 121 is stopped and controlled at a low speed to reduce the deviation of the center of rotation and reduce the depression of the can C due to contact with a guide member or the like. It is possible to prevent scratches and the like, and further improve the centering performance of the lid F by the chuck 121.

While passing through the winding section E, the roll swing shaft 132 of the seaming unit 130 is operated by the drive motor (servo motor) 158, and the seaming roll 131 is pressed from the side, whereby the winding is tightened.
Although only one seaming roll 131 is shown in the figure, the roll swing shaft 132 is actually provided with two seaming rolls 131 for primary winding and secondary winding. It is sequentially pressed while passing through the section E, and the winding tightening is completed.
A mechanical mechanism may be used as the drive source of the roll swing shaft 132 in order to interlock with the rotation phase of the seaming turret 101, but by using an independently controlled servo motor as the drive source, The timing of the tightening operation and the pressing amount of the seaming roll 131 can be independently controlled, and the optimum adjustment can be made individually without stopping the operation. Therefore, the adjustment work can be easily performed in a short time, and the operation can be performed. It is possible to deal with fluctuations in the market.

When the pressing mechanism 111 is a mechanism that elastically presses the plate 112 upward by a pressure fluid such as compressed air, when the height of the can C is slightly reduced during winding and tightening, the actual can is reduced. Even if the pressing mechanism 111 absorbs an error of a high reduction amount, the axial load does not change, and it is possible to improve the winding tightening accuracy and speed up the winding tightening process.
The can CM that has been wound and tightened is delivered from the seaming turret 101 to the discharge turret 107, and further delivered from the discharge turret 107 to the carry-out conveyor 108 to be carried out to the next process such as inspection and packing.

In a winding device 100b according to another embodiment of the present invention, the above-mentioned chuck 121 is provided with a negative pressure suction hole 125 as a lid suction means (see FIG. 5), and as shown in FIG. The lid conveying turret 106 is arranged so that the position Gb for sucking F to the chuck 121 under negative pressure is located upstream of the confluence point G (see FIG. 1) in the above-described embodiment.
In this embodiment, first, at the position Gb where the lid F on the upstream side is sucked by the chuck 121 under negative pressure, the lid F is sucked by negative pressure by the chuck 121 to perform centering, as shown in FIG.
After that, at the confluence point G, the cans C are supplied onto the plate 112 of the can placing unit 110, and the can placing unit 110 rises, so that the lid F attached to the chuck 121 is placed on the cans C. Against the pressing force of the pressing mechanism 111, the plate 112 and the chuck 121 are clamped by a constant axial load required for winding tightening.
This allows the lid F to be centered by itself.

FIG. 7 shows a can placing unit 110b having a pressing mechanism of another form. As shown in the drawing, the pressing mechanism 111b hermetically seals the piston 114b for moving the plate 112b up and down with respect to the cylinder space 113b by the diaphragm 118b. Is configured to keep.
This eliminates the need for a sliding seal member, and there is no seal resistance when the piston 114b moves up and down, and the plate 112b can be moved up and down smoothly.

FIGS. 8 and 9 show another form of the chuck unit in the winding device of the present invention. As shown in the drawings, the chuck unit 120c is provided with an oil seal 129c at the lowermost end thereof along with the rotation of the chuck 121c. A rotating rotary vane pump 127c is provided, and the lubricating oil is forcibly discharged from the discharge tube 128c by the rotation of the rotary vane pump 127c.
As a result, the amount of lubricating oil stored on the oil seal 129c can be minimized and the leakage and contamination of the lubricating oil from the oil seal 129c due to the rotation of the chuck 121c can be prevented.

100 ... Tightening device 101 ... Seaming turret 102 ... Carry-in conveyor 103 ... Attachment 104 ... Lid supply unit 105 ... Lid supply device 106 ... Lid transport turret 107 ... Discharge turret 108 ・ ・ ・ Carry-out conveyor 110 ・ ・ ・ Can placing unit 111 ・ ・ ・ Pressing mechanism 112 ・ ・ ・ Plate 113 ・ ・ ・ Cylinder space 114 ・ ・ ・ Piston 115 ・ ・ ・ Vertical movement mechanism 116 ・ ・ ・ Vertical Moving cam 117 ・ ・ ・ Vertical moving cam follower 118 ・ ・ ・ Diaphragm 120 ・ ・ ・ Chuck unit 121 ・ ・ ・ Chuck 125 ・ ・ ・ Negative pressure suction hole (lid suction means)
126 ... chuck outer peripheral part 127 ... rotary vane pump 128 ... discharge tube 129 ... oil seal 130 ... seaming unit 131 ... seaming roll 132 ... roll swing shaft 151 ... ..Drive motors (drive sources) for seaming turrets
152 ... Drive motor (drive source) for lid transport turret
153 ... Drive motor (drive source) of the lid supply device
154 ... Drive motor (drive source) of the carry-in conveyor
155 ... Pocket position detection encoder (detection means)
156 ... Chuck drive motor (drive source)
157 ... Drive motor (drive source) for can placing unit
158 ... A drive motor (drive source) for the roll swing shaft
C: Can (before closing the lid)
F ・ ・ ・ Lid CM ・ ・ ・ Can (after tightening the lid)
P ・ ・ ・ Pocket E ・ ・ ・ Winding tightening section G ・ ・ ・ Junction

Claims (6)

A winding device having a can placing unit for placing a can, a chuck unit provided to face the can placing unit, and a seaming turret provided with a seaming roll for winding a lid around the can. ,
A carry-in conveyor that supplies cans to the seaming turret, and a lid supply unit that includes a lid supply device that supplies a lid and a lid transport turret,
The input conveyor, the lid supply unit and the cover conveyor turret, have a drive source which is controlled independently,
A winding device, wherein the rotation of the plate of the can mounting unit and the chuck of the chuck unit and the winding operation of the seaming roll are performed by drive sources that are independently controlled .   The winding device according to claim 1, wherein the drive source is a servo motor. The seaming turret has a detection means for detecting the position of the pocket,
The transfer path of the carry-in conveyor has a pitch sensor for detecting the attachment of the carry-in conveyor ,
The output of the previous SL pitch sensor, tightening apparatus according to claim 1 or 2, characterized in that for controlling the position of the attachment and the seaming turret for pocket of the cover transport turret. The tightening device according to any one of claims 1 to 3 , wherein the pressing mechanism of the can mounting unit is configured to operate by fluid pressure. The winding device according to claim 4 , wherein the pressing mechanism has a diaphragm that seals fluid pressure. The winding device according to any one of claims 1 to 5 , wherein the chuck unit has a rotary vane pump for forcibly discharging the lubricating oil.

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