JP2022061437A - Splicer and operating method of the same - Google Patents

Abstract

To reduce waste of a film before replacement wrapped around a path length adjustment part.SOLUTION: Before joining and cutting by sealers 31 and 30B and a cutting blade 34 of a splicer 1, a drive mechanism rotates and drives a first support shaft 24A while a drive roller 16 is stopped, and by winding a first film 4A around a first web roll 2A, a path length of the first film 4A is adjusted to be shorter by a path length adjusting part 14.SELECTED DRAWING: Figure 5

Description

The present invention relates to a splicer for joining films to each other and a method of operating the splicer.

The packaging device is provided with a film supply device that supplies a strip-shaped film wound around the original roll. When the type of contents to be packaged is changed by the packaging device, it is necessary to replace the film with a new film of a different type. Therefore, a splicer that joins the film to a new original roll film is used as a film supply device (see, for example, Patent Document 1).

In the splicer described in Patent Document 1, the second original roll is waiting near the first original roll around which the first film being supplied is wound, and the second original roll is unwound from the second original roll. The film is prepared by superimposing it on the first film. A sealing device is provided at a position where the first film and the second film are overlapped, and a drawer roller for pulling out the first film is provided on the downstream side of the sealing device. In this splicer, although the extraction roller is stopped when the original roll is replaced, the drive roller on the downstream side of the extraction roller continues to supply the first film, and the dancer roller between the extraction roller and the drive roller causes the first film to be supplied. 1 The path length of the film gradually decreases. At that time, the first film and the second film are joined by the sealing device, and the joined portion is cut by the cutting blade of the sealing device. After that, the second film is pulled out from the second original roll by the pulling roller.

Japanese Patent No. 5883612

However, in the technique of Patent Document 1, the first film before replacement, which is wound around the dancer roller, is wasted. That is, it is necessary to package the new contents after the first film before replacement, which is wound around the dancer roller, is sent to the packaging device and discharged from the packaging device.

Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to reduce waste of the film before replacement, which is wound around the path length adjusting portion composed of a dancer roller or the like.

In order to solve the above problems, a splicer is attached to a rotary disk, a rotary drive machine for rotationally driving the rotary disk, and a strip-shaped first film wound on the rotary disk. The first support shaft on which the first support shaft is supported, the second support shaft attached to the turntable and on which the second original roll around which the strip-shaped second film is wound are supported, the first support shaft and the first support shaft. A drive mechanism that drives the two support shafts to rotate individually, and the first film provided on the radial outer side of the turntable and extending from the first raw fabric roll are wound around the first film, and the first film is sent downstream. The first film is hung between the drive roller, the nip roller that presses the first film against the drive roller, and the first original roll and the drive roller, and from the first original roll to the drive roller. On the path length adjusting unit for adjusting the path length of the first film, and on the direction side of the rotation of the turntable from the second support shaft and on the opposite side of the rotation of the turntable from the first support shaft. The second film attached to the turntable and extended from the second original roll is hung, and the first film extended from the first original roll is overlapped with the second film and hung. It is provided with a bonding portion and a bonding / cutting mechanism for joining and cutting the first film and the second film which are overlapped with each other in the film connecting portion, and before joining and cutting by the bonding / cutting mechanism, the said When the drive roller is stopped, the drive mechanism rotationally drives the first support shaft, and the first film is wound around the first original roll, so that the path length of the first film becomes the path length. It is adjusted shorter by the adjustment unit.

According to the present invention, since the first film is wound on the original roll before joining the first film and the second film, the path of the first film in the path length adjusting portion is shortened, and the path of the first film is shortened. Wasteful disposal can be reduced.

It is a front view of a splicer. It is an enlarged front view of the main part of a splicer. It is explanatory drawing of the operation of a splicer. It is explanatory drawing of the operation of a splicer. It is explanatory drawing of the operation of a splicer. It is explanatory drawing of the operation of a splicer. It is explanatory drawing of the operation of a splicer. It is explanatory drawing of the operation of a splicer. It is explanatory drawing of the operation of a splicer. It is explanatory drawing of the operation of a splicer.

Hereinafter, embodiments will be described with reference to the drawings. However, although various technically preferable limitations are attached to the embodiments described below, the scope of the present invention is not limited to the following embodiments and illustrated examples.

1. 1. Configuration of Splicer FIG. 1 is a front view of a biaxial turret type splicer 1. FIG. 2 is an enlarged view of the guide roller 10 and the second sealer 31 of the splicer 1 and their peripheral portions. Here, the left-right orientation is determined by looking at the splicer 1 from the front, as shown by the arrows in FIG. Further, the vertical direction means the vertical direction, but it may be inclined with respect to the vertical direction.

The splicer 1 is provided in the packaging device. The splicer 1 continuously supplies the film 4 to the packaging device. The packaging device is, for example, a pillow packaging machine. The packaged items are sequentially supplied to the packaging device by the feeder, and the packaged items are sequentially packaged by the film 4 supplied from the splicer 1 by the packaging device to sequentially produce the packages.

The splicer 1 includes a guide roller 10, a motor 11, a guide roller 12, an actuator 13, a path length adjusting unit 14, a guide roller 15, a drive roller 16, a motor 17, a nip roller 18, an actuator 19, a rotary disk 22, and a rotary drive machine 23. Two support shafts 24, two clutches 25, two induction rollers 26, two folding rollers 27, two fasteners 28, two first sealers 30, second sealers 31, actuators 33, It includes a cutting blade 34, an actuator 35, a machine frame 80, and a control unit 90. Here, a mechanism including two first sealers 30, a second sealer 31, an actuator 33, a cutting blade 34, and an actuator 35 is a joining cutting mechanism.

1-1. Machine frame The machine frame 80 is provided in a box shape so as to surround the internal space, and a circular opening 81 is formed on the front surface of the machine frame 80.

1-2. Rotating disk The disk-shaped rotating disk 22 is fitted in the opening 81 of the machine frame 80. The turntable 22 is supported by the machine frame 80 so as to be rotatable around a rotation axis passing through the geometric center of gravity of the turntable 22 by a guide roller or the like arranged along the opening 81 of the machine frame 80. The axis of rotation of the turntable 22 is horizontal. That is, the turntable 22 is attached to the machine frame 80 so as to rotate in a vertical plane.

1-3. Rotation drive The rotation drive 23 drives and rotates the turntable 22. The rotary drive machine 23 has a motor and a gear transmission mechanism that transmits the power of the motor to the rotary disk 22. The direction of rotation of the turntable 22 is counterclockwise.

1-4. Feed motor, clutch and support shaft Inside the machine frame 80, the feed motor 29 is attached to the machine frame 80.

Inside the machine frame 80, the clutch 25 is attached to the turntable 22 so as to be symmetrical with respect to the rotation axis of the turntable 22. The clutch 25 is connected to the feed motor 29 via a planetary gear mechanism.

The support shaft 24 is rotatably attached to the turntable 22 by a bearing or the like. The support shaft 24 is provided parallel to the rotation axis of the turntable 22 and penetrates the turntable 22 back and forth. The support shaft 24 is connected to the clutch 25, respectively. The clutch 25 transmits power between the feed motor 29 and the support shaft 24, and cuts off the power transmission. By engaging and disengaging these clutches 25, the support shaft 24 is individually driven by the feed motor 29. That is, the drive mechanism for individually rotating and driving these support shafts 24 is composed of the clutch 25, the planetary gear mechanism, and the feed motor 29. The two feed motors 29 may be connected to the support shafts 24 without using the clutch 25, and the support shafts 24 may be individually rotationally driven by the respective feed motors 29.

The original roll 2 is mounted on the support shaft 24, respectively. These raw fabric rolls 2 are formed by winding a strip-shaped film 4. A sealant layer is formed on the inner surface of the wound film 4.

The support shaft 24 is provided with a mechanism for locking the original roll 2 to the support shaft 24 and preventing the original roll 2 from falling off from the support shaft 24. By pulling out the film 4 of the original roll 2, the original roll 2 and the support shaft 24 rotate together. The rotation of each support shaft 24 around its central axis is hereinafter referred to as rotation.

The support shaft 24 is arranged in the circumferential direction of the rotation axis of the turntable 22, and is arranged at a position symmetrical with respect to the rotation axis of the turntable 22. Since the support shaft 24 is attached to the turntable 22, the support shaft 24 revolves along the same circular orbit as the turntable 22 rotates. In order to make it easier to distinguish the two support shafts 24, the code of one support shaft 24 is affixed with A, and the code of the other support shaft 24 is affixed with B. Further, A is attached to the code of the clutch 25 connected to the support shaft 24A, and B is attached to the code of the clutch 25 connected to the support shaft 24B. Further, A is attached to the reference numeral of the original roll 2 supported by the support shaft 24A, and B is attached to the reference numeral of the original roll 2 supported by the support shaft 24B. A is attached to the code of the film 4 of the original roll 2A, and B is attached to the code of the film 4 of the original roll 2B.

Of the support shafts 24A and 24B, the film 4A drawn from the original roll 2A supported by the upper support shaft 24A is continuously supplied to the downstream packaging device. On the other hand, while the film 4A is being supplied from the raw roll 2A, the raw roll 2B is replaced with a new raw roll 2B, attached to the support shaft 24B, and the new raw roll 2B is made to stand by. be able to. The positions of the upper support shaft 24A and the original roll 2A are referred to as the supply source position P1, and the positions of the lower support shaft 24B and the original roll 2B are referred to as the standby position P2. By rotating the turntable 22, the positions of the original roll 2A and the original roll 2B can be exchanged.

1-5. Guide roller, folding roller, fastener, first sealer Two guide rollers 26, two folding rollers 27, two fasteners 28, and two first sealers 30 are attached to the turntable 22. Therefore, the guide roller 26, the folding roller 27, the fastener 28, and the first sealer 30 revolve with the rotation of the turntable 22.

One guide roller 26, one folding roller 27, one fastener 28, and one first sealer 30 arranged close to each other form one set, and there are a total of two sets. These sets are arranged near the support shafts 24A and 24B, respectively. In order to make it easier to identify the two sets of guide rollers 26, fold-back rollers 27, fasteners 28 and first sealer 30, the following guide rollers 26, fold-back rollers 27, fasteners 28 and first sealer 30 are paired with the support shaft 24A. A is attached to the code of 1 sealer 30, and B is attached to the code of the induction roller 26, the folding roller 27, the fastener 28 and the first sealer 30 which are paired with the support shaft 24B. Here, the set including the guiding roller 26A, the folding roller 27A, and the fastener 28A is the first film hanging portion, and the set including the guiding roller 26B, the folding roller 27B, and the fastener 28B is the second film hanging portion. ..

The induction rollers 26A and 26B are rotatably attached to the rotary disk 22 at positions symmetrical with respect to the rotation axis of the rotary disk 22. The support shafts 24A and 24B are rotatably attached to the rotary disk 22 at positions symmetrical with respect to the rotation axis of the rotary disk 22. The fasteners 28A and 28B are attached to the turntable 22 at positions symmetrical with respect to the rotation axis of the turntable 22. The first sealers 30A and 30B are attached to the turntable 22 at positions symmetrical with respect to the rotation axis of the turntable 22.

The positions of the folding roller 27A, the first sealer 30A, the fastener 28A, and the guiding roller 26A in the circumferential direction are on the rotation direction side of the turntable 22 with respect to the support shaft 24A paired with the fastener 28A, and with respect to the other support shaft 24B. Is on the opposite side of the rotation of the turntable 22. The folding roller 27A, the first sealer 30A, the fastener 28A, and the guiding roller 26A are arranged radially outside the rotation axis of the turntable 22 with respect to the support shaft 24A. Further, the folding roller 27A, the first sealer 30A, the fastener 28A, and the guiding roller 26A are arranged in a straight line in this order along a direction parallel to the tangent line of the outer periphery of the support shaft 24A.

The positions of the guide roller 26B, the fastener 28B, the first sealer 30B, and the folding roller 27B in the circumferential direction are on the rotation direction side of the turntable 22 with respect to the support shaft 24B paired with the guide roller 26B, and with respect to the other support shafts 24A. Is on the opposite side of the rotation of the turntable 22. The folding roller 27B, the first sealer 30B, the fastener 28B, and the guiding roller 26B are arranged radially outward with respect to the rotation axis of the turntable 22 with respect to the support shaft 24B. Further, the folding roller 27B, the first sealer 30B, the fastener 28B, and the guiding roller 26B are arranged in a straight line in this order along a direction parallel to the tangent line of the outer periphery of the support shaft 24B.

The first sealers 30A and 30B are provided with heaters.

The film 4B of the original roll 2B located at the standby position P2 is wound around the folding roller 27B and folded back toward the first sealer 30B and the fastener 28B by the folding roller 27B. The film 4B is bridged from the folding roller 27B to the fastener 28B, and the tip end portion of the film 4B is fastened to the fastener 28B. The first sealer 30B faces the film 4B between the folding roller 27B and the fastener 28B. The first sealer 30B is in close proximity to the film 4B without contacting the film 4B.

1-6. The second sealer and the actuator The second sealer 31 is installed on the outer side in the radial direction of the turntable 22, specifically, on the upper right side of the turntable 22. The second sealer 31 is provided so as to be movable in the radial direction of the rotary disk 22 so as to cross the outer periphery of the rotary disk 22. Specifically, the fixed block 32 is attached to the front surface of the machine frame 80 at the upper right of the rotating disk 22, and the second sealer 31 is attached so as to be movable in the radial direction of the rotating disk 22 relative to the fixed block 32. ing. An actuator 33 that drives the second sealer 31 in the radial direction of the rotary disk 22 is attached to the fixed block 32. The actuator 33 is, for example, an air cylinder or an electromagnetic solenoid.

The second sealer 31 is provided with a heater.

1-7. Cutting blade and actuator The cutting blade 34 is movable in the radial direction of the rotary disk 22 relative to the second sealer 31, and is housed in the second sealer 31. The cutting blade 34 is connected to an actuator 35 that drives the cutting blade 34 in the radial direction of the rotary disk 22.

1-8. Guide roller The guide roller 10 and the guide roller 12 are rotatably attached to the front surface of the machine frame 80 on the radial outer side of the rotary disk 22, specifically, on the upper right of the rotary disk 22.

The film 4A of the raw fabric roll 2A located at the supply source position P1 is guided from the raw fabric roll 2A through the inside of the second sealer 31 to the guide rollers 12 and the guide rollers 10 in order, and these guide rollers 12 and guides are guided. It is wound around a roller 10.

1-9. The path length adjusting unit, the guide roller, the drive roller, the nip roller, the motor and the actuator The path length adjusting unit 14, the guide roller 15, the drive roller 16 and the nip roller 18 are provided on the radial outer side of the rotating disk 22. Specifically, the path length adjusting unit 14 is provided on the right side of the guide roller 10, the guide roller 15 is provided on the right side of the path length adjusting unit 14, and the drive roller 16 and the nip roller 18 are provided on the upper right side of the guide roller 15. ing. The film 4A drawn out from the original roll 2A is guided to the path length adjusting section 14, the guide roller 15, and the drive roller 16 in this order after the guide roller 10, and is guided to the path length adjusting section 14, the guide roller 15, and the drive roller. It is wrapped around 16.

The nip roller 18 is provided so as to be in contact with and detachable from the drive roller 16. The actuator 19 drives the nip roller 18 to be brought into contact with and separated from the drive roller 16. When the drive roller 16 is rotationally driven by the motor 17 with the film 4A sandwiched between the nip roller 18 and the drive roller 16, the film 4A is conveyed.

The path length adjusting unit 14 has a plurality of first dancer rollers 14a and a plurality of second dancer rollers 14b. The first dancer roller 14a is arranged below the second dancer roller 14b, and the film 4A is alternately wound around the first dancer roller 14a and the second dancer roller 14b.

The first dancer roller 14a is provided so as to be linearly movable up and down by a pinion rack mechanism, and the second dancer roller 14b is provided so as to be linearly movable up and down by a pinion rack mechanism. When the first dancer roller 14a and the second dancer roller 14b come close to each other, the path length of the film 4A is shortened. On the contrary, when the first dancer roller 14a and the second dancer roller 14b are separated from each other, the path length of the film 4A becomes long.

The air cylinder 14c urges the first dancer roller 14a and the second dancer roller 14b in a direction to separate them from each other, and the pressure of the air cylinder 14c is applied to the first dancer roller 14a and the second dancer roller 14b via the pinion rack mechanism. The dancer. As a result, the tension of the film 4A wound around the first dancer roller 14a and the second dancer roller 14b is applied. The control unit 90 controls the solenoid valve of the air cylinder 14c, whereby the pressure of the air cylinder 14c is controlled.

The path length adjusting unit 14 is also referred to as a buffer device.

2. 2. Supply operation of the splicer The operation of supplying the film 4A from the raw roll 2A located at the supply source position P1 to the packaging device will be described. When the film 4A is continuously and constantly supplied to the packaging device, the following (1) to (7) are obtained.

(1) The second sealer 31 is pulled outward in the radial direction of the turntable 22, and the cutting blade 34 is pulled into the second sealer 31.

(2) The original roll 2A is located at the supply source position P1, and the original roll 2B is located at the standby position P2.

(3) The film 4B pulled out from the original roll 2B is folded back toward the fastener 28B by the folding roller 27B, and the tip end portion of the film 4B is fastened to the fastener 28B. When the operator replaces the raw roll 2B with a new raw roll 2B, the film 4B is pulled out from the new raw roll 2B, the film 4B is folded back by the folding roller 27B, and the tip portion of the film 4B is folded. Fasten to the fastener 28B.

(4) The film 4A has a guide roller 12, a guide roller 10, a first dancer roller 14a, a second dancer roller 14b, a first dancer roller 14a, a second dancer roller 14b, a guide roller 15, and a drive roller in order from the original roll 2A. It is hung on 16. Further, the film 4A is sandwiched between the nip roller 18 and the drive roller 16.

(5) The control unit 90 controls the solenoid valve of the air cylinder 14c so that the pressure of the air cylinder 14c is kept constant. By applying the pressure of the air cylinder 14c to the first dancer roller 14a and the second dancer roller 14b, the first dancer roller 14a is positioned above the lowest position in the movable range by a predetermined distance (hereinafter, this). The position is referred to as a lower stationary position), and the second dancer roller 14b is located below the uppermost position in the movable range by a predetermined distance (hereinafter, this position is referred to as an upper stationary position). Therefore, the path length of the film 4A in the path length adjusting unit 14 is maximized. Macroscopically, although the distance between the first dancer roller 14a and the second dancer roller 14b is kept constant, microscopically, the speed of the feed motor 29 is controlled as shown in (6) below. The distance between the first dancer roller 14a and the second dancer roller 14b changes slightly.

(6) Since the clutch 25B is disengaged, the support shaft 24B and the original roll 2B do not rotate. On the other hand, since the clutch 25A is engaged, the support shaft 24A and the original roll 2A rotate by the feed motor 29, whereby the film 4A is fed from the original roll 2A to the path length adjusting unit 14. When the drive roller 16 is rotationally driven by the motor 17, the film 4A is sent out from the path length adjusting unit 14 to the downstream of the drive roller 16 and supplied to the packaging device. Here, the control unit 90 controls the motor 17 to a constant speed at a constant speed, and the control unit 90 keeps the first dancer roller 14a and the second dancer roller 14b of the path length adjusting unit 14 at predetermined positions. The rotation speed of the feed motor 29 is controlled. Specifically, the control unit 90 monitors the positions of the first dancer roller 14a and the second dancer roller 14b by a position sensor, a photoelectric sensor, or the like, and the detection positions of the first dancer roller 14a and the second dancer roller 14b are lower, respectively. In the case of the side steady position and the upper steady position, the control unit 90 maintains the rotational speed of the feed motor 29 as it is. When the detection position of the first dancer roller 14a is above the lower steady position and the detection position of the second dancer roller 14b is lower than the upper steady position, the control unit 90 accelerates the feed motor 29. , The first dancer roller 14a and the second dancer roller 14b return to the lower steady position and the upper steady position, respectively. When the detection position of the first dancer roller 14a is lower than the lower steady position and the detection position of the second dancer roller 14b is higher than the upper steady position, the control unit 90 decelerates the feed motor 29. The first dancer roller 14a and the second dancer roller 14b return to the lower steady position and the upper steady position, respectively. In this way, since the positions of the first dancer roller 14a and the second dancer roller 14b are maintained at the lower steady position and the upper steady position, respectively, the path length of the film 4A in the path length adjusting unit 14 is kept constant. There is.

3. 3. Splicer replacement operation An operation in which the splicer 1 replaces the film 4A with the film 4B after the continuous supply of the film 4A will be described.

(1) Stopping film supply First, when an operator operates the operation panel, the control unit 90 that receives a signal from the operation panel stops the motor 17 and the feed motor 29. Then, the supply of the film 4A is stopped. The clutch 25A continues the power transmission between the feed motor 29 and the support shaft 24A, and the clutch 25B continues to cut off the power transmission between the feed motor 29 and the support shaft 24B.

(2) Revolution of the original roll Next, when the control unit 90 controls the rotary drive machine 23, the rotary disk 22 is rotationally driven counterclockwise by the rotary drive machine 23 as shown in FIG. With the rotation of the turntable 22, the original rolls 2A and 2B, the support shafts 24A and 24B, the clutches 25A and 25B, the induction rollers 26A and 26B, the folding rollers 27, the fasteners 28A and 28B and the first sealers 30A and 30B are revolved. Revolve clockwise.

Since the original roll 2A separates from the guide roller 10 and the guide roller 12 while the film 4A is sandwiched between the nip roller 18 and the drive roller 16, the film 4A moves from the path length adjusting unit 14 toward the original roll 2A. Be pulled. Therefore, the path length of the film 4A in the path length adjusting unit 14 is shortened.

After that, the guiding roller 26B hits the film 4A, and the film 4A is guided toward the second sealer 31 by the guiding roller 26B. Then, as shown in FIG. 4, when the films 4A and 4B overlap each other and the first sealer 30B faces the second sealer 31, the control unit 90 stops the rotary drive machine 23. When the support shafts 24A and 24B stop revolving in this way, the films 4A and 4B cross the region between the first sealer 30B and the second sealer 31, and the sealants of the film 4A and the sealants of the film 4B face each other. ing.

(3) Winding of film Next, when the control unit 90 operates the feed motor 29, the support shaft 24A and the original roll 2A rotate on their rotations, and the film 4A is wound on the original roll 2A. Further, since the control unit 90 keeps the solenoid valve of the air cylinder 14c off, the pressure applied from the air cylinder 14c to the dancer rollers 14a and 14b is released, and the dynecer rollers 14a and 14b can move up and down. Therefore, the winding of the film 4A raises the first dancer roller 14a, lowers the second dancer roller 14b, and shortens the path length of the film 4A in the path length adjusting unit 14. Then, as shown in FIG. 5, when the path length of the film 4A in the path length adjusting portion 14 becomes the shortest, that is, the tangent line at the lower end of the outer circumference of the first dancer roller 14a and the upper end of the outer circumference of the second dancer roller 14b. When the tangent line becomes a straight line, the control unit 90 stops the feed motor 29. As a result, the winding of the film 4A is stopped. Further, since the control unit 90 turns on the solenoid valve of the air cylinder 14c, the positions of the first dancer roller 14a and the second dancer roller 14b are maintained, and the path length of the film 4A in the path length adjusting unit 14 is maintained at the shortest. Will be done.

(4) Joining and cutting the film Next, the control unit 90 operates the actuator 33. Then, as shown in FIG. 6, the second sealer 31 approaches the first sealer 30B, and the films 4A and 4B are sandwiched between the sealers 30B and 31. The heat of the sealers 30B and 31 welds the facing surfaces of the films 4A and 4B.

Next, the control unit 90 operates the actuator 35. Then, the cutting blade 34 is projected from the second sealer 31 into the recess of the first sealer 30B, and the films 4A and 4B are cut by the cutting blade 34.

After that, the cutting blade 34 is pulled into the second sealer 31 by the actuator 35.
Further, the control unit 90 operates the actuator 33. Then, as shown in FIG. 7, the second sealer 31 is separated from the first sealer 30B by the actuator 33, and the cut films 4A and 4A are released. The film 4A extending from the original roll 2A is connected to the fastener 28B via a cut piece at the end of the film 4B. The film 4B extending from the original roll 2B is connected to the film 4A guided from the guide roller 12 to the packaging device via the guide roller 10, the path length adjusting unit 14, the guide roller 15, and the drive roller 16. There is.
Further, after the film 4A is cut, the control unit 90 disengages the clutch 25A and engages the clutch 25B.

(5) Revolution of the original roll Next, when the control unit 90 controls the rotary drive machine 23, the rotary disk 22 is rotationally driven counterclockwise by the rotary drive machine 23 as shown in FIG. With the rotation of the turntable 22, the original rolls 2A and 2B, the support shafts 24A and 24B, the clutches 25A and 25B, the induction rollers 26A and 26B, the folding rollers 27, the fasteners 28A and 28B and the first sealers 30A and 30B are revolved. Revolve clockwise.

Here, when the original roll 2B passes near the guide roller 12 and the second sealer 31 counterclockwise, the films 4B and 4A extending from the original roll 2B are stretched and wound around the guide roller 12. After that, when the raw fabric roll 2B continues to revolve, the film 4B is pulled out from the raw fabric roll 2B.

After that, when the original roll 2B reaches the supply source position P1 and the original roll 2A reaches the standby position P2, the control unit 90 stops the rotary drive machine 23, so that the support shafts 24A and 24B stop revolving.
Further, since the control unit 90 turns off the solenoid valve of the air cylinder 14c, the pressure applied from the air cylinder 14c to the dancer rollers 14a and 14b is released, so that the dynecer rollers 14a and 14b can move up and down.

(6) Supply of the replaced film Next, the control unit 90 operates the motor 17. Then, the film 4B is unwound from the original roll 2B of the support shaft 24B by the drive roller 16 and supplied to the packaging device. Here, the control unit 90 speeds up the feed motor 29 while controlling the motor 17 to a constant speed to loosen the brake of the support shaft 24B, thereby adjusting the feeding speed of the film 4B by the drive roller 16. Make it faster than the transport speed of 4B. Therefore, as shown in FIG. 10, the first dancer roller 14a descends, the second dancer roller 14b rises, and the path length of the film 4B in the path length adjusting unit 14 becomes longer. In this way, the positions of the first dancer roller 14a and the second dancer roller 14b are returned to their original positions so that the tension set on the film 4B acts.

After that, as shown in FIG. 10, when the first dancer roller 14a reaches the lower steady position and the second dancer roller 14b reaches the upper steady position, the control unit 90 determines the feeding speed of the film 4B of the support shaft 24B. The rotation speed of the feed motor 29 is controlled so as to be equal to the transport speed of the film 4B by the drive roller 16. Therefore, the descent of the first dancer roller 14a is stopped, and the ascent of the second dancer roller 14b is stopped.

After that, the film 4B is continuously and constantly supplied to the packaging device in the same manner that the film 4A is continuously and constantly supplied to the packaging device. When the film 4B is replaced with the film 4A, the splicer 1 performs the same replacement operation.

4. Advantageous effect Since the film 4A is wound around the original roll 2A before joining the films 4A and 4B, the path of the film 4A in the path length adjusting unit 14 is shortened, and wasteful disposal of the film 4A can be reduced.

5. Modification example At least one of the following (1) to (3) may be changed from the above embodiment.

(1) In the above embodiment, the first sealer 30 is attached to the turntable 22 for each support shaft 24. On the other hand, one first sealer 30 may be attached to the machine frame 80 at a position facing the second sealer 31. In this case, in order to prevent the first sealer 30 from hitting the support shaft 24, the guide roller 26, the folding roller 27, the fastener 28, the film 4, and the original roll 2 during the rotation of the turntable 22. The sealer 30 is provided so as to be movable in a direction parallel to the rotation axis of the turntable 22. Then, before the rotation of the turntable 22, the first sealer 30 is pulled into the machine frame 80 by a power source in a direction parallel to the rotation axis of the turntable 22. Further, before joining the film 4, the first sealer 30 is pulled out from the machine frame 80 in a direction parallel to the rotation axis of the rotary disk 22 by a power source, and the first sealer 30 and the second sealer 31 face each other.

(2) In the above embodiment, the second dancer roller 14b and the first dancer roller 14a come into contact with each other. On the other hand, the first dancer roller 14a may be brought into contact with and separated from the second dancer roller 14b by the linear motion mechanism, and the second dancer roller 14b may be brought into contact with and detached from the first dancer roller 14a by the linear motion mechanism. It may be a thing.

(3) The number of support shafts 24 attached to the turntable 22 is not limited to 2, and may be 3 or more. Even in that case, the number of each of the clutch 25, the induction roller 26, the folding roller 27, the fastener 28, and the first sealer 30 is equal to the number of the support shaft 24.

1 ... Splicer 2A ... 1st original roll 2B ... 2nd original roll 4A ... 1st film 4B ... 2nd film 10 ... Guide roller 14 ... Path length adjustment unit 14a ... 1st dancer roller 14b ... 2nd dancer roller 16 ... Drive roller 18 ... Nip roller 22 ... Rotating board 23 ... Rotating drive 25A, 25B ... Clutch 26A, 26B ... Induction roller 27A, 27B ... Folding roller 28A, 28B ... Fastener 29 ... Feed motor 30A, 30B ... First sealer 31 ... 2nd sealer 33, 35 ... Actuator 34 ... Cutting blade

Claims (3)

With a turntable
A rotary drive machine that rotationally drives the rotary disk, and
A first support shaft attached to the turntable and on which a first raw fabric roll around which a strip-shaped first film is wound is supported, and a first support shaft.
A second support shaft attached to the turntable and on which a second original roll around which a strip-shaped second film is wound is supported, and a second support shaft.
A drive mechanism that separately rotates and drives the first support shaft and the second support shaft,
A drive roller provided on the radial outer side of the turntable, around which the first film extending from the first raw fabric roll is wound, and which feeds the first film downstream.
A nip roller that presses the first film against the drive roller, and
A path length adjusting unit in which the first film is hung between the first original roll and the drive roller to adjust the path length of the first film from the first original roll to the drive roller.
The said plate was attached to the turntable on the rotation direction side of the turntable with respect to the second support shaft and on the opposite direction side of the rotation of the turntable with respect to the first support shaft, and extended from the second original roll. A film hanging portion in which the second film is hung and the first film extending from the first original roll is overlapped with the second film and hung.
It is provided with a joining and cutting mechanism for joining and cutting the first film and the second film which are overlapped with each other in the film transfer portion.
Prior to joining and cutting by the joining cutting mechanism, the driving mechanism rotationally drives the first support shaft while the drive roller is stopped, and the first film is wound around the first raw fabric roll. A splicer in which the path length of the first film is shortened by the path length adjusting unit. Prior to winding the first film onto the first raw fabric roll, the rotary drive machine rotationally drives the rotary disk with the drive roller stopped, and the first support shaft adjusts the path length. The first aspect of claim 1, wherein the first film is pulled toward the first original roll side by revolving away from the portion, and the path length of the first film is adjusted shorter by the path length adjusting portion. Splicer. With a turntable
A rotary drive machine that rotationally drives the rotary disk, and
A first support shaft attached to the turntable and on which a first raw fabric roll around which a strip-shaped first film is wound is supported, and a first support shaft.
A second support shaft attached to the turntable and on which a second original roll around which a strip-shaped second film is wound is supported, and a second support shaft.
A drive mechanism that separately rotates and drives the first support shaft and the second support shaft,
A drive roller provided on the radial outer side of the turntable, around which the first film extending from the first raw fabric roll is wound, and which feeds the first film downstream.
A nip roller that presses the first film against the drive roller, and
A path length adjusting unit in which the first film is hung between the first original roll and the drive roller to adjust the path length of the first film from the first original roll to the drive roller.
The said plate was attached to the turntable on the rotation direction side of the turntable with respect to the second support shaft and on the opposite direction side of the rotation of the turntable with respect to the first support shaft, and extended from the second original roll. A film hanging portion in which the second film is hung and the first film extending from the first original roll is overlapped with the second film and hung.
A method of operating a splasher including a joining and cutting mechanism for joining and cutting the first film and the second film which are overlapped with each other in the film transfer portion.
Prior to joining and cutting by the joining cutting mechanism, the driving mechanism rotationally drives the first support shaft while the drive roller is stopped, and the first film is wound around the first raw fabric roll. A method of operating a splicer in which the path length of the first film is adjusted to be shorter by the path length adjusting unit.

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