JPH0545470Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an apparatus for manufacturing a continuous bag in roll form, for manufacturing a predetermined number of garbage bags made of resin, for example, into 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.

As an apparatus for producing the above-mentioned continuous bags in rolls, an apparatus for manufacturing continuous bags in rolls is disclosed, for example, in Japanese Utility Model Application Publication No. 1840 of 1983. In this conventional type, both parallel claws are moved closer to each other by the operation of the ejection/retraction drive device, and the two parallel claws are attached to both side edges of the continuous bag, which has been clamped by the second clamping device in the previous process, through a gap. Fit externally. Next, when both parallel claws are rotated synchronously to wind up the continuous bag, the perforation located between the winding device and the second clamping device is broken by the winding force. Then, when the winding has been completed a little, by performing the first stage separating movement of the retraction drive device, only the short claw part is extracted from the continuous bag being wound up, and from then on, the winding is performed via the long claw part. Collection will be made. After winding up the continuous bag by a set amount and stopping the rotation of the winding device, the continuous bag is held by the first holding device, and then the second parallel claw
The elongated claw portion is extracted from the roll-shaped continuous bag by performing a separating movement of the steps. As a result, the rolled continuous bag is received by the guide plate, is guided in a rolling manner, falls through the second clamping device which is being opened, and is then passed onto the conveyor. Thereafter, the second clamping device clamps the passage portion of the continuous bag, and the first clamping device is opened to return to the initial state.

Problems to be Solved by the Invention According to the above-mentioned conventional method, when the parallel claws are fitted onto the outside, the continuous bag held by the first holding device is placed between the first holding device and the second holding device. The part located at the top is easily swayed by wind, etc., and therefore the external fitting of the parallel claws cannot be performed accurately.

The purpose of the present invention is to provide a continuous roll bag manufacturing device that can always accurately and completely automate the external fitting of parallel claws, and thereby manufacture roll-shaped continuous bags firmly, cleanly, and quickly. The point is to provide the following.

Means for Solving the Problems In order to achieve the above object, the roll-shaped continuous bag manufacturing device of the present invention flattens a cylindrical film,
A first clamping device, a winding device, a film stretching device, and a second clamping device are arranged in order from above to below in the descending path of the continuous bag formed by forming seals and perforations at set pitch intervals. The winding device has a pair of left and right parallel claws that can move toward and away from each other and can rotate, and these parallel claws are composed of a pair of parallel claws with a gap between them,
The film stretching device has a swingable abutting member that stretches the continuous bag held by both gripping devices so that its side edge faces the gap.

According to the configuration of the present invention, in the state in which the continuous bag is clamped by the second clamping device in the previous step, the film stretching device is activated, and the contact member is swung to position it above the second clamping device. By bringing the bag into contact with a continuous bag and expanding the bag, the side edge of the bag can be opposed to the gap between the parallel claws. By moving both parallel claws toward each other in this state, both parallel claws can be externally fitted onto both side edges of the continuous bag through a gap. Next, both parallel claws are rotated synchronously to wind up the continuous bag, and the film stretching device is operated to the non-operating position one after the other, so that the winding force causes the winding device and the second clamping device to be connected to each other. The perforations located between the two are broken. Then, after winding up a set amount of continuous bags and stopping the rotation of the winding device,
The continuous bag is held by the first holding device, and then the parallel claws are moved apart to extract the claw portion from the rolled continuous bag. As a result, the rolled continuous bag falls through the second clamping device which is being opened. Thereafter, the second clamping device clamps the passage portion of the continuous bag, and the first clamping device is opened to return to the initial state.

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

To carry out a series of manufacturing, a fabric holding device 10, a continuous bag manufacturing device 30, and a rolled continuous bag manufacturing device 7 are used.
0 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 4 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 abutting against 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 device 30 has a pair of upper and lower sandwiched feed rolls 32 on the upper side of a 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 whose position is freely adjustable.

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 tucking roll 83 whose vertical position can be adjusted. And the swinging rod 7
5 moves downward by a predetermined angle or more, the third rotary drive device 78 is switched to low speed, and when the swinging rod 75 moves upward by another predetermined angle or more, the third rotary drive device 78 switches to normal speed (high speed). speed). Folding devices 84 and 85 are provided at the upper and lower ends of the tack roll 83, respectively.
4, 85 is a type of folding while guiding the moving continuous bag 3. The continuous bag 3 is folded in half by the upper folding device 84, then folded by the lower folding device 85, and finally folded into three in the width direction. be done. 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, a film stretching device 130, and a second clamping device 97 are arranged in this order. The first clamping 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 is also the same, and includes a receiving tool 101, a holding tool 102, and a cylinder device 1.
03. The winding device 96 is
It has a pair of left and right movable plates 104 that can move toward and away from each other, and these movable plates 104 are provided with parallel claws 105 that can move toward and away from each other and rotate synchronously. That is, a cylindrical shaft 107 is rotatably attached to the movable plate 104 via a bearing 106, and a shaft body 108 that is movable only in the axial direction is disposed within the cylindrical shaft 107 via a spline or a key. Fixing devices (bolts, nuts, etc.) 1 are attached to these shafts 108.
The parallel claws 105 attached via 09 are composed of a long claw portion 105A and a short claw portion 105B that are parallel to each other with a gap 110 in between. The long claw portion 105A
has a rectangular cross section, and the short claw portion 105B has a round cross section. Both parallel claws 105 penetrate a cover 111 attached to the inner end of the cylindrical shaft 107 and protrude. 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 1
16 is pivoted at its lower end and can swing left and right, and between its upper end and the movable plate 104 are parallel claws 105.
A cylinder device 117 is provided, which is an example of an ejection/retraction drive device that causes an approach/separation movement. This cylinder device 117 is configured and controlled to perform the approaching movement in one step and the separating movement in two steps. At this time, the middle (first stage) of the separation movement is set so that only the short claw portion 105B is extracted from the rolled continuous bag 4. The first intermediate shaft 118 attached to the machine frame 70 side and the shaft cylinder 107 are connected to the winding transmission device 11.
A second intermediate shaft 121 is operatively connected to the first intermediate shaft 118 via a wrap transmission 120 and is operatively connected to the speed change motor 92 via a wrap transmission 122 . Said movable plate 1
The approaching/separating movement of 04 is performed by a manual handle or the like, and in order to absorb the amount of movement at that time, the wheel body 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 downwardly, are disposed, and a guide rod 125 is disposed at the lower end of the upper guide plate 123. Above the second clamping device 97, a detection device 126, for example a phototube type, is provided.
is provided. The film stretching device 130 includes:
A left-right pin 131 is provided on the back side of the movable plate 104.
The L-shaped link 132 is swingably attached via the
A contact roller (an example of a contact member) 134 is freely rotatably attached to one free end of the L-shaped link 132 via a left-right shaft 133, and the other free end of the L-shaped link 132 The cylinder device 135 is provided between the movable plate 104 and the cylinder device 135, and two sets are provided on the left and right. and contact roller 134
is an arcuate long hole 136 formed in the movable plate 104.
It protrudes to the surface through. Note that guide rollers 137 and 138 are provided between the first clamping device 95 and the winding device 96 for meanderingly guiding the continuous bag 3.
are provided in a pair of upper and lower parts.

A conveyor 8 for carrying out the rolled continuous bags 4 is disposed below the second clamping 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 is 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 bags 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 by solid lines in FIG. Nail 105
is stopped at a position where the gap 110 faces the continuous bag 3. Furthermore, the film stretching device 130
Here, due to the extension of the cylinder device 135, the contact roller 134 is retracted outward. Therefore, as shown in FIG. 7, although the parallel claws 105 are in the correct position, the continuous bag 3 is disordered and does not face the gap 110 correctly. In this state, first, the cylinder device 135 is contracted, and the contact roller 134 is moved forward inward via the L-shaped link 13. As a result, as shown in FIG.
The continuous bag 3 is stretched between the bag 38 and the contact roller 134, so that it correctly faces the gap 110. In this state, by the approaching action of the cylinder device 117, the parallel claws 105 are moved as close as possible to each other via the rod 112, the shaft 108, etc., as shown in FIG. Fit it around the edge. Next, the clutch of the first intermediate shaft 118 is turned on, the brake is turned off, and both parallel claws 105 are synchronously rotated in the same direction (clockwise in FIG. 1) 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 enters the non-detection state, the second clamping device 97 is opened, and the continuous bag roll 4
is carried out by the conveyor 8, and the film spreading device 130 returns to the contact roller 13.
Move 4 back. The winding mentioned above is a little (2~
3 times), the cylinder device 117 is
As shown by the imaginary line in FIG. 5, only the short claw portion 105B is extracted from the continuous bag being wound up, and thereafter winding is performed only via the long claw portion 105A having a rectangular cross section. It can be done. Such winding continues, and after winding a predetermined number of sheets, 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 formation of the seal portion 5 and perforation 6 is counted, and the signal is stopped when the predetermined number of sheets have been counted, and at that time, the stop is caused by the action of the proximity switch mentioned above. Posture becomes constant.
Almost simultaneously with this stop, the first clamping device 95 is moved to close, and the continuous bag 3 is clamped above the winding device 96. Next, by the second stage separation movement of the cylinder device 117, both the parallel claws 105 are moved apart from each other via the rod 112, the shaft 108, etc., and the long claw portion 105A is extracted from the rolled continuous bag 4. As a result, the rolled continuous bag 4 falls, and both guide plates 12
3, 124, it passes through a second clamping device 97 and reaches onto the conveyor 8, as shown in FIG. Then, the detection device 126 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. This results in the initial state shown in FIG. 7, and the same operation is repeated thereafter.

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, in the state in which the continuous bag is held by the second holding device in the previous step, the film spreading device is operated, and the abutment member is swung to move the bag above the second holding device. By bringing it into contact with the positioned continuous bag and expanding this continuous bag, the side edge of the continuous bag can be made to face the gap between both parallel claws, and in this state, by moving both parallel claws closer to each other, Both parallel claws can be accurately fitted onto both side edges of a continuous bag through gaps. Therefore, even in a place with a bad external environment such as wind, the external fitting of the parallel claws onto the continuous bag can always be performed accurately, and the production of rolled continuous bags can be carried out completely automatically.

[Brief explanation of the drawing]

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 section, and Fig. 3 is a view taken along arrow A-A in Fig. 2. Figure 4 is a BB-B arrow view, Figure 5 is a cross-sectional plan view of the main part, Figures 6 to 9 are side views of the main part showing the operating state, and Figure 10 is an explanatory perspective view. It is. 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, 10
5A...Long claw part, 105B...Short claw part, 11
0... Gap, 117... Cylinder device (exit/retreat drive device), 125... Guide rod, 126... Detection device,
130... Film stretching device, 132... L-shaped link, 134... Contact roller (contact member), 13
5... Cylinder device, 137, 138... Guide roller.

Claims (1)

[Scope of utility model registration request] A first clamping device, a winding device, a film stretching device, and a second clamping device are installed during the descending path of a continuous bag formed by flattening a cylindrical film and forming seal portions and perforations at set pitches. The winding device is arranged in order from the top to the bottom, and the winding device has a pair of left and right parallel claws that can move toward and away from each other and can freely rotate, and these parallel claws are separated from a pair of parallel claws with a gap between them. manufacturing a roll-shaped continuous bag, characterized in that the film stretching device has a swingable abutment member that stretches the continuous bag held by both gripping devices and makes the side edge face the gap; Device.