JPH0433700B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a continuous rolled bag, for example, for manufacturing a predetermined number of resin garbage bags in coreless rolls.

BACKGROUND ART For example, garbage bags used in general households are folded one by one to a predetermined size, and a predetermined number of folded garbage bags are placed in a storage bag for sale. Another method is to wind up a continuous garbage bag into a roll in the final process of bag making and sell it as a continuous bag.

Problems to be Solved by the Invention In the above-mentioned roll system, if the product is wound around a cylindrical core, it is easy to remove the product from the winding device. It is not desirable that the use of a shaped core increases the cost. It would be possible to wind it up without using the core, but it is not easy to wind it up neatly and quickly and take it out.

An object of the present invention is to provide a method for manufacturing a continuous bag in the form of a roll, which can be manufactured neatly and quickly.

Means for Solving the Problems In order to solve the above problems, the method of manufacturing a roll-shaped continuous bag according to the present invention comprises flattening a cylindrical film and forming seal portions and perforations at predetermined pitches. In the descending path of the continuous bag, a winding device has a pair of left and right parallel claws that can move toward and away from each other and can rotate, a first clamping device located above the winding device, and a second gripping device located below. First, both parallel claws are brought close to each other and fitted onto both sides of the continuous bag held by the second holding device in the previous step, and then both parallel claws are rotated synchronously to form a continuous bag. At the same time, the winding force breaks the perforation located between the winding device and the second clamping device, the second clamping device is opened, and the continuous bag is rolled up by a set amount. After the rotation of the winding device is stopped, the continuous bag is held by the first holding device, and then the parallel claws are moved apart from each other to pull it out from the rolled continuous bag, thereby transferring the rolled continuous bag to the second holding device. After dropping through the clamping device, the continuous bag is clamped by the second clamping device, and the first clamping device is opened.

According to the configuration of the present invention, for example, the number of sheets to be wound is set, and when the number of sheets is taken out by counting and the set number of sheets are wound, the winding device is stopped,
By sequentially operating each part, a roll-shaped continuous bag can be manufactured.

Embodiment An embodiment of the present invention will be described below based on the drawings.

In order to carry out a series of manufacturing, the original fabric holding device 10,
The continuous bag manufacturing device 30 and the rolled continuous bag manufacturing device 70 are arranged in this order.

The original fabric holding device 10 has an upper roll 12 at the upper end of a machine frame 11, and a support device 14 having a pair of front and rear receiving rollers 13 is disposed at the upper end of the lower part, distributed to the left and right. A raw material 1 made of a flattened cylindrical film is wound around a core rod 2 in a roll shape.
By placing both ends of the core rod 2 on the group of receiving rollers 13 of the support device 14, it becomes rotatable. A control device 15 that automatically stops rotation when the amount of unrolled material 1 becomes excessive is a control device 15 that automatically stops rotation of the support device 1.
a vertically swinging rod 17 attached to the 4th side via a horizontal pin 16; a pressure contact member 18 attached to the upper end of the swinging rod 17 and capable of freely coming into contact with the core rod 2 from below; It consists of a lower roll 19 attached to the lower end of the swinging rod 17 and guiding the raw fabric 1 upward from the upper roll 12, a weight 20 attached to the lower end of the swinging rod 17, and the like.

The continuous bag manufacturing apparatus 30 has a pair of upper and lower clamping type feed rolls 32 on the upper part of the machine frame 31, and this feed roll 32 has a variable-speed first feed roll 32.
It is interlocked and connected to a rotational drive device 33 via a winding transmission device 34. At the middle upper part of the machine frame 31,
A tack roll 35 whose vertical position can be freely adjusted is provided, and the tack roll 35 and the feed roll 3
A first step roller device 36 is disposed between the two. The first step roller device 36 includes a swinging rod 37 in the vertical direction, a large number of movable rollers 38 disposed on the swinging rod 37, and a large number of stationary rollers 39 disposed on the upper part of the machine frame 31. and the first rotational drive device 3
3 and a link 41 that interlocks a swinging rod 37. The raw fabric 1 from the feed roll 32 is alternately wound around the movable roller 38 and the stationary roller 39 before reaching the tack roll 35, and when the swinging rod 37 moves down by a predetermined angle or more. First rotation drive device 33
is switched to a low speed, and when the swinging rod 37 moves upward beyond another predetermined angle, the first rotary drive device 33
is switched to normal speed (high speed). At the lower upper part of the machine frame 31, there is a seal forming device 42 that forms seal portions 5 at set pitches on the original fabric 1.
A perforation forming device 43 for forming perforations 6 is disposed near this seal portion 5, and an actuating device 44 for both devices 42, 43 is provided at the bottom. The seal forming device 42 includes a receiving roll 45.
A presser roll 46 disposed above the receiving roll 45, a hot plate 47 that can freely come into contact with and separate from the receiving roll 45 from the upper side, and the hot plate 47 is attached to the upper end, and the lower end is attached to the machine. It is composed of a lever 48 which is pivotally attached to the frame 31 and is swingable back and forth. The perforation forming device 43 also includes a pair of upper and lower guide rollers 49 and 50 that form a downward path for the original fabric 1.
, a grooved cradle 51 disposed on the lower side with the descending path in the middle, a blade 52 disposed on the upper side and capable of moving in and out of the groove from the upper side, and this blade 52 is attached to the upper end, and a lever 53 whose lower end is pivotally connected to the machine frame 31 can swing back and forth. The actuating device 44 has a horizontal shaft 54 on the machine frame 31.
The operating link 55 is attached to be able to swing back and forth through the
and the upper end of this operating link 55 and both levers 48,
Connecting links 56 and 57 which are connected to the levers 48 and 53 in a relatively swingable manner and swing both levers 48 and 53 in the same direction by swinging of the operating link 55; A rotating shaft 60 interlocked via a transmission mechanism 59, an eccentric disk 61 attached to the rotating shaft 60, a ring body 62 fitted onto the eccentric disk 61, and a link between the ring body 62 and the operating link 55. It is comprised of a push-pull rod 63 that interlocks with the lower end. The receiving roll 45 serves to feed out the original fabric 1 intermittently at set length intervals. For intermittent driving, a clutch gear 64 is provided coaxially with the receiving roll 45, and a sector gear 66 is interlocked with the clutch gear 64 via a reduction gear 65.
7 and the sector gear 66 are connected by a connecting rod 68.

The rolled continuous bag manufacturing device 70 has a machine frame 71
It has a second step roller device 72 in the upper part and a third step roller device 73 in the middle part,
A roll forming device 74 is provided at the lower part. Said second
The step roller device 72 has a swinging rod 75 in the vertical direction.
, a large number of movable rollers 76 disposed on the swinging rod 75, a large number of stationary rollers 77 disposed on the machine frame 71 above the swinging rod 75, and a third rotary drive device 78 that can change speed. A link 80 that interlocks the speed change lever 79 and the swinging rod 75 provided in the , a feed roll 81 provided between the second and third step roller devices 72 and 73, and the feed roll 81 and the third rotation drive device. 78 and a winding transmission device 82 which is interlocked and connected. The continuous bags 3 from the continuous bag manufacturing device 30 are alternately wound around a movable roller 76 and a stationary roller 77, and then reach a feed roll 81 via a tuck roll 83 whose vertical position can be adjusted. , when the swinging rod 75 moves down by a predetermined angle or more, the third rotation drive device 78 is switched to a low speed, and the swinging rod 75
When the angle moves upward by another predetermined angle or more, the third rotary drive device 78 is switched to normal speed (high speed).
Folding devices 84 and 85 are provided at the upper and lower ends of the tack roll 83, respectively, and these folding devices 84 and 85 fold the moving continuous bags 3 while guiding them, and the continuous bags 3 are folded by the upper folding device 84. It is folded in two, then folded by a lower folding device 85, and finally folded into three in the width direction. Said third
The step roller device 73 has a swinging rod 86 in the vertical direction.
, a large number of movable rollers 87 disposed on this swinging rod 86 , a large number of stationary rollers 88 arranged on the machine frame 71 above the swinging rod 86 , and a rotating roller to which the swinging rod 86 is attached. It consists of a variable speed motor volume 91 that is interlocked with a shaft 89 via a transmission device 90, and the variable speed motor 9
2 to speed control. The roll forming device 74 includes:
A tack roll 93 that guides the continuous bags 3 from the third stepped roller device 73 and a guide roller 94 that guides the continuous bags 3 from the tack roll 93 downward are provided in the upper part. A first clamping device 95, a winding device 96, and a second clamping device 97 are arranged in this order. The first holding device 95 is composed of a fixed receiver 98, a pusher 99 that can approach and move away from the receiver 98 from the upper side, and a cylinder device 100 that is interlocked with the pusher 99. . Note that the second clamping device 97
The same applies to the receiver 101 and the presser 102.
and a cylinder device 103. The winding device 96 has a pair of left and right movable plates 104 that can move toward and away from each other, and these movable plates 104
Parallel claws 105 that can move toward each other and move away from each other and rotate in synchronization are provided. That is, the movable plate 104
A cylindrical shaft 107 is rotatably attached to the cylindrical shaft 107 via a bearing 106, and within this cylindrical shaft 107 is a shaft body 10 that is movable only in the axial direction via a spline or key.
8 are arranged. Two parallel claws 105 of the same length and shape are attached to this shaft body 108 via fixing devices (bolts, nuts, etc.) 109, and at this time, a gap 110 is formed between both parallel claws 107. be done. Both parallel claws 107 protrude through a cover 111 attached to the inner end of the cylindrical shaft 107. A rod 112 is integrally connected rearward from the rear end of the shaft 108, and a bracket 114 is attached to the outer end of the rod 112 via a bearing 113. The bracket 114 is connected to a swinging rod 116 via a connecting rod 115. This swinging rod 116
The lower end is pivotally attached so that it can swing left and right, and a cylinder device 117 is provided between the upper end and the movable plate 104. First intermediate shaft 1 installed on the machine frame 70 side
18 and the cylindrical shaft 107 are interlocked and connected by a wrap transmission device 119, and the second intermediate shaft 1 is interlocked and connected to the first intermediate shaft 118 via a wrap transmission device 120.
21 is a transmission device 12 that is wound around the speed change motor 92;
They are interlocked and connected via 2. Said movable plate 104
The movement towards and away from the motor is carried out by a manual handle or the like, and in order to absorb the amount of movement at that time, the wheel of the wrap transmission device 119 is spline fitted to the first intermediate shaft 118. A rolled continuous bag 4 is disposed between the winding device 96 and the second clamping device 97.
An upper guide plate 123 for guiding upward and downward, and a lower guide plate 124 for guiding downward downward, and a guide rod 125 is disposed at the lower end of the upper guide plate 123. For example, a phototube type detection device 126 is provided above the second holding device 97.
will be provided.

A conveyor 8 for carrying out the rolled continuous bags 4 is disposed below the second holding device 97, but this may be omitted and empty boxes may be placed instead.

Next, the operation of manufacturing the roll-shaped continuous bag 4 from the original fabric 1 will be described.

The roll-shaped original fabric 1 rotatably held by the original fabric holding device 10 is transferred to a feed roll 32.
It is drawn out by the operation of. At this time, the feed roll 32 is rotated at low speed or high speed by the operation of the first step roller device 36, and the feed roll 32 is automatically rotated so that the length of the material 1 within a certain range is present in the first step roller device 36. controlled. Then, the lower roll 19 rises due to the tensile force during pulling out,
Due to the swinging of the swinging rod 17, the pressure contact member 1 is moved from the core rod 2.
8 are spaced apart. When the amount of hanging down via the lower roll 19 increases, the swinging rod 17
The weight 20 side moves downward, and this causes the core rod 2 to move downward.
The rotation is braked by bringing the pressure contact member 18 into pressure contact with the member 18 . The original fabric 1 in the first stepped roller device 36 is intermittently transferred by a receiving roll 45 that is driven intermittently, and the continuous bag 3 in the second stepped roller device 72 is continuously transferred by a feed roll 81. Both levers 48 and 53 are swung downward at the same timing as the above-described intermittent transfer is stopped, and as a result, the seal portion 5 is formed by the receiving roll 45 and the hot plate 47, and the grooved receiving pedestal 51 and the blade body 52 form a perforation 6 near the seal portion 5.

As shown in Figure 7, the roll-shaped continuous bag 4 is
When manufacturing the continuous bag 3, the continuous bags 3 are held by the second holding device 97. At this time, both parallel pawls 105 are moving away from each other as shown in FIG. Nail 105
is stopped at a position where the gap 110 faces the continuous bag 3. In this state, the cylinder device 11
7, the parallel claws 105 are moved toward each other via the rod 112, the shaft 108, etc., and are fitted onto both side edges of the continuous bag 3 through the gap 110.
Next, the clutch of the first intermediate shaft 118 is turned on, the brake is turned off, and both parallel claws 105 are turned on.
are synchronously rotated in the same direction to wind up the continuous bag 3. Then, due to this winding force, the perforation 6 located between the winding device 96 and the second clamping device 97 is broken as shown in FIG. As a result, the detection device 126 goes into a non-detection state, the second clamping device 97 is opened, and the continuous bag roll 4 is carried out by the conveyor 8. During this time, the winding continues, and after a predetermined number of sheets have been wound, the winding is stopped by turning on the clutch and turning off the brake as described above. This predetermined number can be adjusted arbitrarily, and the seal part 5 and perforation 6
, and is stopped by a signal when a predetermined number of counts have been completed, and at that time, the stopping posture is made constant by the action of the aforementioned proximity switch. Almost simultaneously with this stop, the first clamping device 95 is moved to close and clamps the continuous bag 3 above the winding device 96. Then, by the operation of the cylinder device 117, the parallel claws 1 are moved through the rod 112, the shaft 108, etc.
05 are moved away from each other and pulled out from the rolled continuous bag 4. As a result, the rolled continuous bag 4 falls, and after being guided by both guide plates 123 and 124, it passes through the second clamping device 97 and reaches the top of the conveyor 8, as shown in FIG. Then, the detection device detects and moves, the second clamping device 97 moves to close and clamps the continuous bag 3, and the first clamping device 95 moves to open. The continuous bag 3 is stretched by being held by the second holding device 97, and is correctly opposed to the parallel claws 105 by the guide rollers 94 and guide rods 125 as shown in FIG. This results in the initial state, and the same operation is repeated below.

Note that in order to position the perforation 6 between the winding device 96 and the second clamping device 97, the tack roll 9 is
3 is adjusted.

Effects of the Invention According to the present invention having the above configuration, the number of sheets to be wound is set, the winding device is stopped when the set number of sheets is wound by counting, and each part is sequentially operated. It is possible to produce a roll-shaped continuous body neatly and quickly.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is a schematic side view of the whole, FIG. 2 is a partially cutaway front view of the winding device, and FIG. 3 is a view taken along arrow A-A in FIG. 2. Figure, 4th
5 is a cross-sectional plan view of the main part, FIGS. 6 to 8 are side views of the main part showing the operating state, and FIG. 9 is an explanatory perspective view. 3...Continuous bag, 4...Rolled continuous bag, 5...
Seal portion, 6... Perforation, 10... Fabric holding device, 30... Continuous bag manufacturing device, 32... Feeding roll, 36... First step roller device, 42...
Seal forming device, 43... Perforation forming device, 4
5... Receiving roll, 70... Rolled continuous bag manufacturing device, 72... Second step roller device, 73... Third step roller device, 74... Roll forming device, 9
5... First clamping device, 96... Winding device, 97
...Second clamping device, 98,101...Receptacle, 9
9,102...Press tool, 105...Parallel claw, 11
0... Gap, 125... Guide rod, 126... Detection device.

Claims (1)

[Claims] 1. A winding device having a pair of left and right parallel claws that can be freely moved toward and away from each other and rotatable in the descending path of a continuous bag made by flattening a cylindrical film and forming seals and perforations at predetermined pitches. A device is provided, a first clamping device located above the winding device, and a second clamping device located below. , bring both parallel claws close to each other and fit them outwardly, then both parallel claws are rotated synchronously to wind up the continuous bag, and by this winding force,
After breaking the perforation located between the winding device and the second clamping device, the second clamping device is opened, and after winding up the continuous bag by a set amount and stopping the rotation of the winding device, the first clamping device is opened. The continuous bag is held by the holding device, and then the parallel claws are moved apart from each other to extract it from the rolled continuous bag, thereby causing the rolled continuous bag to fall through the second holding device.
While holding the continuous bag by the second holding device,
A method for manufacturing a continuous bag in roll form, comprising opening a first clamping device.