JP3535918B2 - Bag sealing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention, after opening a packaging bag,
The present invention relates to a bag filling and sealing device that inserts an object to be packaged into the packaging bag and further folds and seals the opening end of the packaging bag.

[0002]

2. Description of the Related Art For example, in order to automatically perform a work of inserting a roll-shaped photographic light-sensitive material into a gusset bag and then folding the opening of the gusset bag by mouth along a line, various operations are performed. The bag filling and sealing device of is used.

This type of bag filling and sealing device is disclosed, for example, in Japanese Patent Laid-Open No. 4-87910 by the present applicant, in which the opening of a packaging bag (gusset bag) is orthogonal to the conveying direction. Equipped with a conveyor means for transporting in a posture toward, a packaging object insertion station through which the packaging bag is sequentially conveyed through the conveyor means, an opening forming part forming station and a predetermined number of opening forming part mouth folding stations. There is.

In this article insertion station, the opening side of the packaging bag is sucked by the suction cups arranged vertically and opened in the vertical direction, and the product (rolled photographic light-sensitive material) is opened from the opening side. Inserted in the packaging bag. Next, at the opening forming section forming station, the opening side of the packaging bag is folded into a substantially flat state under the action of six forming claws that move in the lateral direction and a forming plate that sandwiches the opening side from above and below. Furthermore, in each of the opening forming portion mouth folding stations, the mouth portion folded in a substantially flat state is subjected to mouth folding processing in a plurality of stages.

[0005]

By the way, products such as rolled photographic light-sensitive materials generally have various different sizes, and a dedicated packaging bag is prepared for each size of the product. In order to cope with such a change in the size of the product and the packaging bag, in the above-described conventional technique, the product and the packaging bag are inserted in the package insertion station, the opening forming part forming station, and each opening forming part mouth folding station. Various adjustment operations are individually performed according to the dimensions of the.

However, since the adjustment work is individually performed at each station, the preparation process associated with the change of the product and the packaging bag becomes complicated. In particular, it has been pointed out that when the number of folding steps increases and the number of opening forming station folding stations increases, a preparation process of this kind becomes considerably complicated and time-consuming.

The present invention solves this kind of problem and can quickly and easily cope with changes in the size of the object to be packaged and the packaging bag. It is an object of the present invention to provide a bag filling and sealing device capable of efficiently performing the above.

[0008]

In order to achieve the above-mentioned object, the present invention provides a carrying conveyor for carrying a packaging bag having an opening at one end in a posture in which the opening extends in a direction intersecting the carrying direction. Before inserting the article to be packaged into the packaging bag, the opening mechanism for forcibly forming the packaging bag into a predetermined opening shape, and inserting the article to be packaged into the packaging bag opened by the opening mechanism An insertion mechanism for forming, an opening end forming mechanism for forming the opening end of the packaging bag in which the object to be packaged is inserted into a flat shape, and the opening end formed in the flat shape is folded back to form a mouth. A mouth-folding mechanism for forming the folded portion,
Corresponding to changes in the dimensions of the packaging bag and the packaged item,
At least the opening end forming mechanism and the mouth folding mechanism are provided with a movable main body capable of integrally moving up and down with respect to the transport conveyor.

[0009]

In the bag filling and sealing apparatus according to the present invention, when the size of the packaging bag and the object to be packaged is changed, the movable main body only moves up and down with respect to the transport conveyor, and at least the opening end forming mechanism and The mouth folding mechanism is integrally height-adjusted.
Therefore, the preparation process for changing the size of the packaging bag and the packaged object is simplified at once, and the bagging work of the packaged objects of various sizes can be efficiently performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The bag filling and sealing apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a bag filling and sealing apparatus according to this embodiment. This bag filling and sealing device 10
Is a conveyor 16 for conveying the gusset bag 12 in a posture in which the opening 14 of the gusset bag (packaging bag) 12 is oriented in a direction (arrow B direction) intersecting the conveying direction (arrow A direction).
An opening mechanism 18 for forcibly forming the gusset bag 12 into a predetermined opening shape, and the opened gusset bag 12
An insertion mechanism 22 for inserting a roll-shaped product (object to be packaged) 20 into the container and an opening end forming mechanism 24 for forming the opening end 12a of the gusset bag 12 into which the product 20 is inserted into a flat shape.
A mouth-folding mechanism 28 for forming the mouth-folding portion 26 by folding back the flat-shaped opening end portion 12a a plurality of times (three times), a sealing mechanism 30 for taping the mouth-folding portion 26, and the opening end portion. The molding mechanism 24 and the mouth-folding mechanism 28 are provided with a movable main body 32 that can integrally move up and down with respect to the transport conveyor 16.

The conveyor 16, the opening mechanism 18, the insertion mechanism 22 and the sealing mechanism 30 are mounted on the fixed main body 34, and the opening end forming mechanism 24 and the mouth folding mechanism 28 are mounted on the fixed main body 34. Movable body part 3 that can be raised and lowered
It is attached to 2. Opening mechanism 18, insertion mechanism 22, opening end forming mechanism 24, mouth folding mechanism 28, and sealing mechanism 3
0 indicates the transport direction of the transport conveyor 16 (arrow A in this order).
Direction).

As shown in FIGS. 2 and 3, the movable main body portion 32 is attached to the fixed main body portion 34 via the elevating means 36 so as to be movable up and down. The elevating means 36 includes a speed reducer 39 connected to a motor 38, and a ball screw 40 rotated by the speed reducer 39 is fixed to the movable main body 32 via an elevating member 42. The elevating member 42 engages with a guide rail 43a that is provided on the fixed base 43 in the vertical direction. A connecting rod 45 extends from the speed reducer 39, and the connecting rod 45 engages with the other ball screw (not shown). The elevating means 36 may employ another driving structure such as a cylinder or a rack and pinion.

As shown in FIG. 1, the fixed main body 34 includes
A transfer section 46 is provided at the end of the transfer conveyor 16 to transfer the gusset bag 12 positioned and sent from the bag input section 44 to the transfer conveyor 16.

The bag feeding section 44 conveys the positioning claw 48 which engages with the leading end side of the gusset bag 12 in the conveying direction and the gusset bag 12 which is in contact with the positioning claw 48 in the direction of the arrow B to open it. A roller 52 that abuts the positioning plate 50 on the side of the portion 12a and a transfer unit 54 that transfers the gusset bag 12 positioned by abutting the positioning plate 50 to the conveyor 16 side. This transfer means 54 is
It has a plurality of swing claws 58 that can move back and forth in the direction of arrow A and swing through the cylinder 56.

A lower suction belt 60 that extends from the transfer portion 46 to a position corresponding to the insertion mechanism 22 for suction-holding the lower surface of the gusset bag 12 on the side of the opening end 12a is provided and the opening is provided. The opening end 1 of the gusset bag 12 extends from the mechanism 18 to a position corresponding to the insertion mechanism 22.
Upper suction belt 62 for sucking and holding the upper surface on the 2a side
Is provided. The lower suction belt 60 and the upper suction belt 62 are configured as endless belts, and a large number of suction holes 64 and 66 are formed in a plurality of rows in the width direction according to the size of the gusset bag 12. In the transfer section 46,
A pressing plate 68 for pressing the lower surface of the gusset bag 12 on the side of the open end 12a against the lower suction belt 60 to surely suck the lower surface is arranged so as to be able to move up and down.

As shown in FIGS. 4 and 5, the opening mechanism 1
8 is a suction means 70 for sucking and opening the gusset bag 12 from above and below, and gusset rollers 72a, 72b that enter the gusset bag 12 and spread the gussets 12b formed on both sides of the gusset bag 12. And a bottom suction means 74 for sucking the bottom portion 12c of the gusset bag 12 and holding the bottom portion 12c at a height position approximately in the vertical direction of the gusset bag 12 when opened, and a bottom portion for pressing the bottom portion 12c side. Forming means 76, the gusset roller 72a,
The opening / closing means 80 for swinging and displacing 72b in the gusset bag 12 in the direction of arrow D (width direction of the gusset bag 12) and the spacing between the gusset rollers 72a, 72b are used to change the width dimension of the gusset bag 12. A corresponding interval adjusting means 81 is provided.

The interval adjusting means 81 has a movable main body portion 84 that can move back and forth along a guide rail 82 extending in the arrow B and C directions, and the movable main body portion 84 has a first elongated body in the arrow C direction. The support member 86 is fixed. A motor 88 is fixed to the movable main body 84 in the direction of arrow A, and
A second support member 90, which is elongated in the direction, is mounted movably in the direction of arrow A through a ball screw 89 connected to the rotation shaft of the motor 88.

Oscillators 94a, 94 are attached to the tips of the first and second support members 86, 90 via support shafts 92a, 92b.
b is swingably supported, and gusset rollers 72a and 72b are provided on the swing bodies 94a and 94b so as to be rotatable around a vertical axis. The opening / closing means 80 is a cylinder 9 fixed to the leading edge portions of the first and second support members 86, 90.
6, 98, rods 96a, 98a extending from the cylinders 96, 98 engage the ends of the rockers 94a, 94b (see FIGS. 5 and 6).

As shown in FIGS. 4 and 7, the suction means 7
Reference numeral 0 denotes a plurality of lower suction plates 100a to 100d for sucking the lower surface of the gusset bag 12 on the opening end 12a side, and a plurality of upper suction plates 102 for sucking the upper surface of the gusset bag 12 on the opening end 12a side.
a to 102d. Lower suction plate 100a-100
The upper suction cups 102a to 102d and the upper suction cups 102a to 102d are arranged symmetrically with each other, and are configured to selectively perform a suction operation according to the size of the gusset bag 12. Lower suction plate 100a-100d and upper suction plate 102a-
102d is supported via the elevating frame bodies 104 and 106, respectively.

As shown in FIG. 7, the upper suction discs 102a ...
102d can be raised and lowered via a cam rod 105 that moves up and down by a cam mechanism described later, and can also be raised and lowered by a predetermined distance via a cylinder 107. A curl correcting cylinder 109 for the gusset bag 12 is provided near the upper suction plates 102a to 102d (see FIG. 4).

As shown in FIG. 4, the bottom suction means 74 is
Ball screw 11 connected to size switching motor 108
A slide base 112 which is movable in the directions of arrows B and C through 0 is provided. An elevating member 116 is engaged with a motor 114 provided above the slide base 112 via a ball screw (not shown), and the elevating member 116 is
A plurality of suction plates 118 aligned in the direction of arrow A at the lower end of the
Is swingably supported.

As shown in FIG. 8, the bottom forming means 76 is
The rotating shaft 120 is rotatable in a predetermined angle range. The rotating shaft 120 is rotatably supported by a base 122, and an arm portion 124 projects from a substantially intermediate portion thereof. The angular body 128 is engaged with the connecting rod 126 via the connecting rod 126. The prism 128 has a pair of rods 130a, 130
One end of b is fixed, and each rod 130a, 130
b is slidably supported by guide members 131a and 131b on the base 122, and a molding plate 132 is integrally fixed to the other ends of the rods 130a and 130b.

As shown in FIGS. 9 and 10, the insertion mechanism 22 enters the open gusset bag 12 to maintain the shape of the gusset bag 12.
0 and pushing means 14 for inserting the product 20 into the gusset bag 12 held by the corner guide means 140.
2, an insertion conveyer 144 on which the product 20 is placed and which can be raised and lowered, and a product receiving plate 141 for pressing the bottom portion 12c side of the gusset bag 12.

As shown in FIGS. 9 and 11, the corner guide means 140 includes upper guide members 143a and 143b and lower guide members 145a and 145b, which vertically engage with both side portions of the gusset bag 12, and the upper guide. Rotating shafts 146a and 146b for integrally swinging the member 143a and the lower guide member 145a and the upper guide member 143b and the lower guide member 145b in the horizontal direction, respectively.
A horizontal moving means 147 for moving the rotary shaft 146b forward and backward with respect to the rotary shaft 146a in response to a change in width of the gusset bag 12, and the upper guide members 143a, 143.
3b is provided for vertically moving the lower guide members 145a and 145b.

The rotating shaft 146a is rotatably supported in the vertical direction with respect to the frame body 148, and the lower guide member 145a is fixed to the lower portion of the rotating shaft 146a and the upper guide member 143a. Is connected to the rotary shaft 146a via a slider 150a which constitutes a vertical moving means 149.
It is supported by the height adjustable. The rotating member 152a is fixed to the upper part of the rotating shaft 146a.
The pin portion 154a fixed to a is engaged with a cam member 156a that can move back and forth in the horizontal direction.

The rotating shaft 146b, as shown in FIG.
The movable frame 158 is rotatably supported in the vertical direction. The movable frame body 158 is provided with a horizontal moving means 147.
And a ball screw 162 that extends in the horizontal direction and is connected to the motor 160 that constitutes the. The lower guide member 145b is fixed to the lower part of the rotating shaft 146b, and
3b is a slider 150b constituting the vertical moving means 149.
It is supported by the rotating shaft 146b via the so as to be adjustable in height position. The rotary member 152b is fixed to the upper part of the rotary shaft 146b, and the pin portion 15 provided on the rotary member 152b is fixed.
4b engages with a cam member 156b that can move back and forth in the horizontal direction.

Below the rotary shafts 146a and 146b, a rotary shaft 164 is arranged extending in the horizontal direction, and a swing cam 166 is fixed to one end of the rotary shaft 164 (FIGS. 9 and 9). 11). Each of the swivel shafts 164 has a predetermined shape and a plurality of under-bag pressing plates 1 spaced apart by a predetermined distance.
68 is fixed.

As shown in FIGS. 9, 10 and 12, the pushing means 142 is arranged so as to correspond to the pair of rollers 170a and 170b for pressing the product 20 while centering the product 20 and both sides of the product 20. Side guide plate 1 for preventing contact between the product 20 and the gusset bag 12
72a and 172b, and a gap adjusting means 176 that adjusts the gap between the pair of rollers 170a and 170b and the pair of side guide plates 172a and 172b corresponding to the change in the size of the product 20.

As shown in FIGS. 9, 13 and 14,
Movable guide member 174a forming push-out means 142
And the fixed guide member 174b are parallel to each other and indicated by an arrow B.
Further, the distance adjusting means 176 is attached to the movable guide member 174a and the fixed guide member 174b.

Motor 17 which constitutes the space adjusting means 176
8 to the ball screw 18 via a belt / pulley 180.
Two are connected. The ball screw 182 extends in the direction of arrow A, is rotatably supported by the fixed guide member 174b, and fits into the nut portion 184 provided on the movable guide member 174a. Guide rods 185 each having one end fixed to the fixed guide member 174b are provided at the distal ends of the movable guide member 174a and the fixed guide member 174b, and the guide rods 18 provided on the movable guide member 174a.
A guide member 187 into which the 5 is inserted is provided.

A slide base 186a is provided on the lower side of the movable guide member 174a and the fixed guide member 174b.
186b is supported, and this slide base 186
The cam rod 190 is engaged with b through the plate 188.

As shown in FIG. 14, the slide base 18
The connecting arm member 192 is fixed to 6a. The connecting arm member 192 extends to the slide base 186a side, and the long groove 1 formed in the connecting arm member 192.
The guide pin 196 fixed to the slide base 186a is fitted to the shaft 94. The connecting arm member 192 applies a driving force acting on the cam rod 190 to the slide base 186.
The slide base 18 has a function of transmitting to a.
Even if 6a is moving in the direction of arrow A, the driving force can be transmitted to the slide base 186a via the long groove 194 and the guide pin 196.

As shown in FIGS. 9 and 12, mounting plates 198a and 198b elongated in the direction of arrow C are fixed to the lower portions of the slide bases 186a and 186b.
Rollers 170a and 170b are provided at the tips of 8a and 198b.
Is rotatably supported around the vertical axis. Mounting plate 198
The cylinders 200a and 200b are mounted on the cylinders a and 198b, and the swinging member 20 is attached to the tips of the long rods 202a and 202b extending from the cylinders 200a and 200b.
4a and 204b are swingably engaged via the support shafts 206a and 206b. The end portions of the side guide plates 172a and 172b are fixed to the swing members 204a and 204b, and the side guide plates 172a and 172b have taper portions 208a and 208b formed at the tip ends thereof.

The insertion conveyor 144 is used for the product stock section 2
The product 20 sent out from 10 (refer to FIG. 1) is sequentially placed, and after ascending, the product 20 is conveyed in the direction of arrow C. As shown in FIG. And an endless belt 216 that travels around. The endless belt 216 is provided with sliders 217 a and 21 that can move up and down with respect to the fixed plate 215.
7b, the product receiving height position from the product stock portion 210 (refer to the chain double-dashed line in FIG. 9) and the gusset bag 1
It is arranged so that it can be arranged at the feeding height position to 2 (see the solid line in FIG. 9). A connecting plate 220 is fixed to the lower ends of the sliders 217a and 217b, and the connecting plate 220 is engaged with the end of a cam rod 222 that can be raised and lowered under the action of a cam mechanism described later. The fixed plate 215 is provided with cylinders 224a and 224b. This cylinder 224
The a and 224b normally urge the endless belt 216 upward, and when the gusset bag 12 is not placed at the product insertion position, the endless belt 216 is pulled downward to pull the product 20 on the endless belt 216. It has the function of not sending out to the height position.

As shown in FIGS. 1 and 15, the opening end portion forming mechanism 24 is formed on both side portions of the gusset bag 12 by being arranged outside both side portions of the gusset bag 12 and swinging in a direction in which they approach each other. For closing the first and second molding claws 230a, 230b for folding the gusset 12b inward and the opening end 12a of the gusset bag 12 folded by the first and second molding claws 230a, 230b. And a closing means 232.

As shown in FIGS. 16 and 17, drive means 234 is provided for adjusting the interval between the first and second molding claws 230a and 230b in response to the change in the size of the gusset bag 12. The drive means 234 includes a base 236 arranged on the movable main body 32.
The first and second ball screws 238a, 238b on the 36.
Extend in the direction of arrow A and are rotatably arranged parallel to each other and displaced from each other. The first and second ball screws 238a, 238b engage with the first and second motors 240a, 240b arranged on the movable main body 32 via the belt / pulleys 242a, 242b, and the first and second ball screws 238a, 238b. 2-ball screw 238a, 238b
The first and second movable rails 244a and 244b are engaged with.

First and second movable rails 244a, 24
The first and second moving bases 246a, 246b are placed on the 4b, and the first and second moving bases 246a, 246 are mounted on the 4b.
b is integrally fixed by a connecting plate 248, and the cam rod 250 engages with the connecting plate 248. First and second cylinders 252a and 252b are swingably mounted on the first and second moving bases 246a and 246b, and rods 254a and 254b extending from the first and second cylinders 252a and 252b are first and second. Second forming claw 2
It engages with the rear end side of 30a, 230b.

The closing means 232, as shown in FIG.
A first upper sandwiching plate 256a and a first lower sandwiching plate 258a that sandwich the open end 12a of the gusset bag 12 from above and below.
And a second upper holding plate 256b and a second lower holding plate 258b for holding the open end 12a of the gusset bag 12 inside the holding position of the first upper holding plate 256a and the first lower holding plate 258a, The opening end 12a is clamped at a position inward of the clamping position of the second upper clamping plate 256b and the second lower clamping plate 258b, and corresponds to the mouth folding mechanism 28 along the conveyor 16 in the clamping posture. Third upper sandwiching plate 256c and third lower sandwiching plate 2 movable to the position
58c.

As shown in FIGS. 18 and 19, upper sliders 262 and 264, which make a pair, are fixed to the upper support plate 260 which constitutes the closing means 232, and the plate is provided at the lower end of the upper slider 262 which makes a pair. The body 266 is fixed.
A pair of parallel guide rails 268 are provided on the plate body 266 so as to be oriented in the directions of the arrows B and C, and the first upper holding plate 256a is supported on the guide rails 268 so as to be movable back and forth by a predetermined distance.

At the lower end of the pair of upper sliders 264, a second upper holding plate 256b narrower than the first upper holding plate 256a is formed.
Is fixed. On the lower surface of the second upper holding plate 256b,
A plurality of rollers 267 are arranged in a line.

The lower support plate 269 is opposed to the upper support plate 260.
And a pair of lower sliders 270 and 272 are supported on the lower support plate 269. Lower slider 270
The plate body 273 is fixed to the upper end of the
The first lower sandwiching plate 258a is movably mounted in the arrow B and C directions via a pair of guide rails 274 provided on the reference numeral 73.

The first lower holding plate 2 is attached to the upper end of the lower slider 272.
A second lower holding plate 258b, which is narrower than 58a, is fixed. A plurality of rollers 275 are arranged in a line on the upper surface of the second lower holding plate 258b.

As shown in FIG. 20, the upper rail member 276 constituting the closing means 232 extends in the direction of arrow A from the opening end forming mechanism 24 toward the position corresponding to the mouth folding mechanism 28. The upper moving base 278 is arranged on the upper rail member 276. The upper moving base 278 has a cam driving source (not shown) and is configured to be movable along the upper rail member 276 in the direction opposite to the arrow A direction.

A cylinder 280 is fixed to the upper moving base 278 in the vertical direction, and a third upper holding plate 256c is attached to a rod 280a extending downward from the cylinder 280.
And the pair of guide rods 282 are fixed to the third upper holding plate 256c. Third upper holding plate 2
A plurality of rollers 283 are arranged in a line on the lower surface of 56c.

Below the upper rail member 276, a lower rail member 284 is arranged in the state of being arranged on the movable main body 32 so as to be oriented in the direction of arrow A, and a lower moving base 286 is provided on the lower rail member 284. Supported. Lower moving base 286
A pair of rods 288 are vertically inserted into the rods 288, and the third lower holding plate 2 is attached to the upper end of the rods 288.
58c is fixed, and a cam roller 292 is fixed to the lower part of the rod 288 via a plate 290. The cam rod 294 engages with the side portion of the lower moving base 286,
Through the cam rod 294, the lower moving base 286
Can move back and forth in the direction of arrow A.

A plurality of rollers 295 are arranged on the upper surface of the third lower holding plate 258c, and a hole 296 is formed at an end of the third lower holding plate 258c, while a third upper holding plate 256c is formed.
A locking pin 298 that fits into the hole 296 is provided on the.

As shown in FIG. 1, the mouth-folding mechanism 28 is sequentially arranged along the conveyer 16 in the direction of arrow A, and the mouth-end portion 26 of the gusset bag 12 is folded back three times by about 180 °. First to third mouth folding stations 300, 302 and 304 for molding, and the second mouth folding station 302 and the third mouth folding station 304 by holding the opening end portion 12a in the mouth folded processing.
Further, a transfer means 306 for transferring to a position corresponding to the sealing mechanism 30 is provided.

The first mouth folding station 300 is provided on the movable main body 32, and has a folding means 308 for folding the opening end 12a of the gusset bag 12 extending in the horizontal direction vertically downward. The folding means 308 is shown in FIG.
As shown in FIG. 22 and FIG. 22, a pair of support rods 312 that can be raised and lowered by the first cam member 310, and a guide portion that is horizontally movable by the second cam member 314 and that is provided at the lower end of the support rod 312. A horizontal rod 318 movably supported by 316 is provided, and a movable bending plate 320 is vertically fixed to the tip of the horizontal rod 318. Below the movable bending plate 320, a fixed bending plate 322 is vertically oriented at a predetermined position.

As shown in FIGS. 21 to 23, the first folding unit 330 is provided in the first folding station 300. The first folding means 330 includes a plurality of (four) sliders 332 fixed to the movable main body 32, and an elevating plate 334 is held at the upper end of each slider 332. A slide member 338 is mounted on a pair of guide rails 336 fixed on the elevating plate 334 so that the slide member 338 can advance and retreat in the directions of arrows B and C, and the slide member 338 extends vertically to the end portion of the slide member 338 for guiding. The member 340 is fixed, and the guide member 340 is engaged with the roller 344 fixed to the end of the first swing cam 342.

A second oscillating cam 346 is arranged side by side with the first oscillating cam 342, and the roller 348 fixed to the end of the second oscillating cam 346 is directed in the vertical direction to the slider 350. It engages with the fixed guide member 352. A rack 354 extending in the directions of arrows B and C is fixed to the slider 350, and a rotary shaft 358 to which a pinion 356 that meshes with the rack 354 is fixed is attached to a first pulley via a belt pulley 360. Engages with plate 362. The first folding plate 362 is biased to a closed state by a spring (not shown), engages with a pressing plate 366 fixed to a rod 364a extending from the cylinder 364 on the slide member 338, and the pressing plate 366 is engaged. It is forcibly released by the forward / backward movement of.

As shown in FIG. 24, the second folding station 302 includes a second folding means 370. The second folding means 370 has substantially the same structure as the first folding means 330, and an elevating plate 374 is fixed to the upper ends of the plurality of sliders 372. A slide member 378 is movably mounted on a guide rail 376 fixed to the elevating plate 374.

The first swing cam 38 is attached to the guide member 382 fixed to the end of the slide member 378 in the vertical direction.
The roller 386 provided at the end of No. 4 engages. The roller 390 fixed to the end of the second swing cam 388 attached to the first swing cam 384 engages the guide member 392, and the pinion 396 meshes with the rack 394 held by the guide member 392. At the same time, the second folding plate 402 is engaged with the rotary shaft 398 to which the pinion 396 is fixed via the belt pulley 400. The second folding plate 402 is
A plurality of them are arranged at a predetermined distance from each other, and the tip ends thereof are formed by bending.

The third folding station 304 is shown in FIG.
As shown in FIG. 5, third folding means 410 is provided. The third folding means 410 is the second folding means 37.
The configuration is the same as that of 0, and the same components are denoted by the same reference numerals and detailed description thereof will be omitted. This third
A plurality of third folding plates 412 forming the folding unit 410 are provided with their width dimensions and spacings selected.

As shown in FIG. 26, the transfer means 306 comprises:
A first transfer chuck 500, a second transfer chuck 502, and a third transfer chuck 504 are provided, and these are connection bars 50.
A guide rail 510 extending in the direction of arrow A through 6, 508 is integrally movable. The guide rail 510 is fixed on the movable main body 32.

As shown in FIGS. 26 and 27, the first transfer chuck 500 includes a moving base 512 supported by a guide rail 510, and the lower ends of a pair of rods 514 vertically inserted into the moving base 512. In the part, the connecting plate 51
A cam 518 is provided via 6. A plurality of first chucks 524 are arranged on the upper part of each rod 514 so as to hold the opening end 12a of the gusset bag 12 that is folded once by a predetermined distance via the mount 520. To be done.

The second transfer chuck 502 is constructed similarly to the first transfer chuck 500, and the same components are designated by the same reference numerals and detailed description thereof will be omitted.
The second transfer chuck 502 includes a plurality of second chucks 525 for gripping the double-folded open end 12a of the gusset bag 12.

As shown in FIGS. 26 and 28, the third transfer chuck 504 is provided with a moving base 526 supported by the guide rail 510, and a pair of rods 528 are inserted into the moving base 526 and the rod 528 is inserted. A cam floor 530b connected to a cam 530a and a cylinder (not shown) is provided below the 528 via a connecting plate 529. By providing the cam floor 530b, the third transfer chuck 504 can be moved up and down independently of the first and second transfer chucks 500 and 502 via a cylinder (not shown). A cylinder 532 is arranged above the rod 528, and a lower end portion of a pair of rocking members 534 is engaged with a rod 532a extending in the horizontal direction from the cylinder 532, and the rocking member 534 is supported by a fulcrum 536. The pressing plate 538 as the third chuck provided on the upper side is swung.

As shown in FIG. 1, the sealing mechanism 30 includes a pair of pressing rods 540 for pressingly supporting the mouth-folding portion 26 of the gusset bag 12, and a cylinder 542 disposed between the pressing rods 540. And a roller 544 that can move back and forth.
The roller 544 performs an operation of adhering the tape 546, which is pulled out from above and cut into predetermined lengths, to the lip folding portion 26.

As shown in FIG. 1, a cam mechanism 554, which is rotationally driven by a motor 552, is arranged in the fixed main body portion 34 which constitutes the bag filling and sealing device 10. The cam mechanism 554 is composed of: In synchronization with the driving of the transport conveyor 16, the opening mechanism 18, the insertion mechanism 22, the opening end forming mechanism 24,
The mouth folding mechanism 28 and the sealing mechanism 30 are integrally driven.

The first to third mouth folding stations 300, 302 and 304 constituting the inserting mechanism 22, the opening end forming mechanism 24 and the mouth folding mechanism 28 are pressed to press and support the upper surface of the gusset bag 12, respectively. A plate 560 is arranged so that it can be raised and lowered.

The operation of the bag filling and sealing apparatus 10 according to the present embodiment configured as described above will be described below.

First, in FIG. 1, the conveyor 16 is driven intermittently, and the cam mechanism 554 is driven in synchronization with the conveyor 16 under the action of the motor 552. Therefore, the gusset bag 1 loaded in the bag loading unit 44
2 is conveyed in the direction of arrow B via the roller 52 in a state where the position of the end surface in the direction of arrow A is regulated by the positioning claw 48, and the opening end 12a side thereof is contacted and supported by the positioning plate 50.

When the gusset bag 12 is positioned by the bag loading section 44, the transfer means 54 is driven, the swinging claw 58 is held in the vertical direction and moved in the direction of arrow A, so that the gusset bag 12 is moved. It is sent to the mounting portion 46 side. Then, the pressing plate 68 is lowered, and the opening end portion 12a side of the gusset bag 12 is pressed by the lower suction belt 60 to be surely sucked to the lower suction belt 60.

Since the lower suction belt 60 orbits in the direction of arrow A and the suction mechanism (not shown) is energized, the gusset bag 12 is sucked and held by the lower suction belt 60 in the direction of arrow A. It is conveyed and stopped at a position corresponding to the opening mechanism 18.

In the opening mechanism 18, the cam rod 105 is integrally lowered via the cam mechanism 554 with the upper suction plates 102a to 102d constituting the suction means 70, and the lower frame and the lower frame 104 are operated under the action of a cylinder or the like. The side suction discs 100a to 100d rise together. This allows
Upper suction plates 102a-102d and lower suction plates 100a-
The open end 12a of the gusset bag 12 is adsorbed from above and below via 100d. When the upper suction plates 102a to 102d are lowered, as shown in FIG. 4, the motor 114 constituting the bottom suction means 74 is driven, and the suction plate 118 is lowered together with the elevating member 116 to move the bottom 12c of the gusset bag 12.
Adsorb.

Next, the upper suction plates 102a to 102d adsorb the upper surface of the gusset bag 12 on the side of the open end 12a and rise to the opening height position of the gusset bag 12, while the lower suction plates 100a to 100d are moved to the above positions. The lower surface of the gusset bag 12 on the side of the open end 12a is adsorbed and lowered to a position slightly below the reference surface. In addition, the suction plate 118 that constitutes the bottom suction means 74 operates under the action of the motor 114.
1/2 of the opening height of this gusset bag 12
Lift to the height of.

In this state, as shown in FIGS. 5 and 6, the movable main body 84 moves to the gusset bag 12 side (direction of arrow C) via the cam mechanism 554, and is swingably supported inward. The gusset rollers 72a and 72b are moved forward to the gusset bag 12 side. Gusset rollers 72a, 72
After b has entered from the opening 14 to a predetermined position in the gusset bag 12, the cylinders 96 and 98 constituting the opening / closing means 80 provided in the first and second support members 86 and 90 are driven to drive the gusset roller 72a. , 72b are spindles 92
It swings outward via a and 92b. Therefore, the gusset rollers 72a and 72b perform an operation of pushing the gussets 12b on both sides of the gusset rollers 12 outward in the gusset bag 12.

The spacing between the gusset rollers 72a and 72b when the gusset rollers 72a and 72b are opened outward is set to be slightly smaller than the width dimension of the gusset bag 12. Therefore, when the gusset 12b is pushed outward by the gusset rollers 72a and 72b, the gusset 12b can be prevented from jumping out of the gusset bag 12.

In synchronization with the movement of the gusset rollers 72a and 72b into the gusset bag 12, the bottom forming means 76 is provided.
Is driven. That is, as shown in FIG. 8, the rotary shaft 120 that constitutes the bottom forming means 76 is rotated in the arrow direction via the cam mechanism 554, and the arm portion 124 and the connecting rod 126 provided on the rotary shaft 120 are moved. Through rod 1
30a and 130b move in the direction of arrow B. For this reason,
The forming plate 132 provided at the tip of the rods 130a and 130b moves to the bottom 12c side of the gusset bag 12, and the suction plate 118 that constitutes the bottom suction means 74 is the bottom 12c.
After releasing the suction of the gusset and moving up, the molding plate 132 is attached to the bottom portion 12c of the gusset bag 12 together with the gusset rollers 72a and 72b.

After that, the rotary shaft 1 is moved through the cam mechanism 554.
20 rotates in the direction opposite to the arrow direction, and the forming plate 132
Are separated from the bottom portion 12c of the gusset bag 12, while the gusset rollers 72a and 72b are swung in a direction in which they approach each other (inward) through the opening / closing means 80, and the gusset bag 12
The gusset bag 12 is integrally retracted from the gusset bag 12 without losing its shape. Furthermore, the upper suction plate 10
2a to 102d and the lower suction plates 100a to 100d are released from suction, and the upper suction plates 102a to 102d are lifted up by a predetermined distance under the action of the cylinder 107, so that the upper suction plates 102a to 102d are reliably removed from the gusset bag 12. Separate. As a result, the gusset bag 12 is formed into a predetermined opening shape as a whole from the opening end 12a side to the bottom 12c side.

The gusset bag 12 forcedly formed into a predetermined opening shape by the opening mechanism 18 has an opening end 12a.
In the state where the side is sucked and supported by the lower suction belt 60 and the upper suction belt 62, the arrow A is passed through the conveyor 16.
And is positioned in the insertion mechanism 22. In this insertion mechanism 22, as shown in FIG.
6a and 156b are driven via the cam mechanism 554, and the rotary shafts 146a are integrally formed with the rotary members 152a and 152b.
146b rotates 90 ° or more, and in this embodiment, rotates about 100 °. Therefore, the upper guide member 143a and the lower guide member 1
45a and upper guide member 143b and lower guide member 14
5b enters the gusset bag 12 and the gusset bag 12
To engage with both sides of the inner side of the rotary shaft 146a, 146b
Irrespective of the rotation of the gusset bag 12, the gusset bag 12 is held in a posture in which it is engaged with both sides of the gusset bag 12 via springs (not shown) (see FIG. 10).

As a result, neither gusset 12b of the gusset bag 12 is loosened, and the gusset 12
b can be maintained in a straight state, and the problem that the side guide plates 172a and 172b pierce the gusset bag 12 at the time of inserting the product 20 described later is reliably avoided. In this case, the rocking cam 166 is driven by the cam mechanism 554, and the under-bag holding plate 168 moves the swivel shaft 1.
The opening end portion 12 of the gusset bag 12 is rotated integrally with 64.
The lower surface of a is pressed and held from the inside.

On the other hand, when the product 20 placed on the product stock section 210 shown in FIG. 1 is sent out onto the insertion conveyor 144 in a positioned state, the driving of the motor 212 is stopped as shown in FIG. Then, the cam mechanism 55
The cam rod 222 is moved up via the arrow 4. For this reason,
The endless belt 2 is integrated with the connecting plate 220 and the sliders 217a and 217b fixed to the cam rod 222.
16 rises, and product 2 on this endless belt 216
0 is arranged at a position corresponding to the pushing means 142.

At this time, the rocking member 20 is actuated by the cylinders 200a and 200b via the rods 202a and 202b.
4a and 204b are swung to move the side guide plates 172a and 172a and 1b.
72b is opened to the outside to prevent contact between the product 20 and the side guide plates 172a, 172b when the product 20 is lifted. After the insertion conveyor 144 has been raised, the cylinders 200a and 200b are driven and the side guide plates 172a and 172b swing inward (see FIG. 12).

Therefore, in synchronization with the endless belt 216 running around the motor 212, the cam mechanism 5
Under the action of 54, the cam rod 190 is pulled in the direction of arrow C in FIG. Therefore, the mounting plates 198a and 198b forming the pushing-out means 142 are not moved by the movable guide member 17.
4a and the fixed guide member 174b, and moves to the gusset bag 12 side. Here, the moving speed by the pushing means 142 is set to be slightly higher than the carrying speed by the insertion conveyor 144, and the mounting plates 198a and 198b are set.
The rollers 170a and 170b provided at the center press the product 20 on the insertion conveyor 144 while centering it, and insert the product 20 into the gusset bag 12 (FIG. 1).
0).

Before the pushing means 142 reaches the advance end, the product receiving plate 141 is advanced to the position corresponding to the bottom portion 12c of the gusset bag 12 under the drive of the cam mechanism 554.

In this case, the product 20 does not come into contact with the gusset bag 12 by the side guide plates 172a and 172b arranged on both sides thereof. Moreover, since the product 20 is pressed while being centered by the pair of right and left rollers 170a and 170b, the product 20 and the side guide plates 172a and 172b are prevented from coming into contact with each other. Therefore, the product 20 can be reliably inserted into the gusset bag 12 while effectively preventing the product 20 from coming into contact with and damaging the side guide plates 172a, 172b and the gusset bag 12. In addition, the side guide plate 172
Since the taper portions 208a and 208b are provided at the tips of the side guide plates 172a and 172b,
The side surface of the gusset bag 12 is not pierced by 2b.

After the product 20 is inserted into the gusset bag 12, the pushing means 142 is retracted via the cam mechanism 554, and the rollers 170a and 170b and the side guide plate 17 are provided.
2a and 172b are removed from the gusset bag 12, and the product receiving plate 141 is attached to the bottom portion 1 of the gusset bag 12.
Retreat from 2c. Then, the corner guide means 140
The rotating shafts 146a and 146b that form the structure rotate, and the upper guide member 143a, the lower guide member 145a and the upper guide member 143b, and the lower guide member 145b swing inwardly toward each other and are separated from both sides of the gusset bag 12. To do. On the other hand, the bag lower pressing plate 168 swings upward through the pivot shaft 164 and separates from the lower surface of the opening end 12 a of the gusset bag 12.

Next, the gusset bag 1 in which the product 20 is inserted
2 is an opening end forming mechanism 24 via the conveyor 16.
Is placed at a position corresponding to. In the opening end forming mechanism 24, as shown in FIGS.
0 is pulled in the arrow C direction via the cam mechanism 554, and the first and second moving bases 246a and 246b move in the arrow C direction along the first and second movable rails 244a and 244b. First and second forming claws 230a, 230b
As shown by the chain double-dashed line in FIG. 16, moves to the gusset bag 12 side in a state where they are open, and the first and second molding claws 230a and 230b advance to a predetermined position.

Then, the first and second cylinders 252a and 252b forming the driving means 234 are driven, the rods 254a and 254b advance in the direction of arrow C, and the first and second molding claws 230a and 230b come close to each other. Rocks in the direction. Thereby, the first and second forming claws 230
a and 230b fold each gusset 12b of the gusset bag 12 from the outside to the inside.

Further, the closing means 232 is driven. That is, as shown in FIGS. 18 and 19, the cam mechanism 5
The upper slider 262 is driven via 54 and the first upper holding plate 256a is lowered to a predetermined position via the plate body 266, while the lower slider 270 is driven to move the plate body 273 and the first
The lower holding plate 258a rises to a predetermined height position. Therefore, the first upper sandwiching plate 256a and the first lower sandwiching plate 258a.
Are arranged so as to be wider than the thicknesses of the first and second molding claws 230a and 230b that fold the gusset 12b of the gusset bag 12 inward.
The two open ends 12a are clamped.

Then, the first and second forming claws 230a,
230b includes first and second drive units 234.
The first slider 262 and the lower slider 270 are driven by the first slider 262 and the lower slider 270 driven while moving backward through the cylinders 252a and 252b while being displaced in the direction away from each other.
The upper holding plate 256a and the first lower holding plate 258a are completely closed, and the open end 12a of the gusset bag 12 is held in a flat shape.

Then, the upper slider 264 and the lower slider 272 are driven, the second upper holding plate 256b and the second lower holding plate 258b move in the direction of approaching each other, and the opening end 12a of the gusset bag 12 is moved to the first upper side. Holding plate 256a and first
The lower clamping plate 258a is clamped at an inner position than the clamping position. Then, as shown in FIG. 20, while the third upper holding plate 256c descends via the cylinder 280, the cam mechanism 5
The rod 288 moves up via the cam roller 292 engaging with 54, and the third lower holding plate 258c moves up. The third upper holding plate 256c and the third lower holding plate 258c form the gusset bag 12
The open end portion 12a of n is clamped at the inward position.

Here, in a state where the opening end 12a of the gusset bag 12 is held by the first upper holding plate 256a and the first lower holding plate 258a, the second upper holding plate 256b, the second lower holding plate 258b, and Since the opening end 12a is sequentially sandwiched by the third upper sandwiching plate 256c and the third lower sandwiching plate 258c, resistance is generated in the gusset bag 12.

At this time, the first upper holding plate 256a and the first upper holding plate 256a
The lower holding plate 258a is configured to be movable back and forth with respect to the plate bodies 266 and 273 via guide rails 268 and 274, respectively. Therefore, the first upper holding plate 256a and the first upper holding plate 256a
The lower holding plate 258a can freely move in the direction of the arrow C, and resistance does not occur in the gusset bag 12.
Further, the second and third upper sandwiching plates 256b and 256c and the second and third lower sandwiching plates 258b and 258c are provided with rollers 267 and 28 at portions contacting the gusset bag 12, respectively.
3, 275 and 295 are provided to prevent resistance from occurring in the gusset bag 12 as much as possible.

As a result, when the opening end 12a of the gusset bag 12 is closed by the closing means 232, wrinkles do not occur at the opening end 12a, and the product 20 in the gusset bag 12 is damaged. Can be prevented.

Third upper holding plate 256c and third lower holding plate 25
When the 8c are displaced toward each other, as shown in FIG. 20, the opening end 12a of the gusset bag 12 is held with the locking pin 298 fitted in the hole 296. And
Upper sliders 262 and 264 and lower sliders 270 and 2
72 is driven, and the first and second upper holding plates 256a, 2
While 56b rises, the first and second lower holding plates 258
After a and 258b are lowered, the cam rod 294 is pulled in the arrow A direction via the cam mechanism 554 in synchronization with the driving of the conveyor 16.

Therefore, the third lower holding plate 258c supported by the lower moving base 286 is integrally formed with the third upper holding plate 256c in which the locking pin 298 is fitted in the hole 296. Of the gusset bag 12 is moved in the direction of the arrow A while holding the opening end 12a of the
And is conveyed to the first folding station 300 constituting the above.

When the gusset bag 12 is conveyed to the first folding station 300, the third lower holding plate 258c is lowered via the cam mechanism 554, while the third upper holding plate 256c is driven by the cylinder 280. Rises. The third lower holding plate 258c is moved in the direction opposite to the arrow A direction via the cam rod 294 and returned to the position corresponding to the opening end forming mechanism 24, and the third upper holding plate 256c is moved to the upper moving base 278. Is returned to a position corresponding to the opening end forming mechanism 24 by a cylinder or the like (not shown) that engages with.

At the first folding station 300, as shown in FIG.
As shown in FIG. 1 and FIG. 22, the first and second cam members 310, 314 forming the bending means 308 are swung via the cam mechanism 554, and the movable bending plate 320 is separated from the fixed bending plate 322 by a predetermined distance. The flat open end 12a of the gusset bag 12 that has been lowered at the position and extended in the horizontal direction is bent 90 ° vertically downward.

Therefore, the first folding plate 362 which constitutes the first folding means 330 operates as shown in FIG. 29 to bend the gusset bag 12 vertically downward.
The step (first mouth folding step) of folding back the opening end 12a of the above by approximately 180 ° is performed.

That is, the first swing cam 342 is driven via the cam mechanism 554, and the slide member 338 is guided along the guide rail 336 via the roller 344 provided on the first swing cam 342 and the guide member 340. Lift plate 334
It moves up in the direction of arrow C (see FIGS. 21 and 23). The first folding plate 362 in FIG. 29, before reaching the position P1 (position P6) through the cylinder 364, presses the pressing plate 36.
6 is driven, the first folding plate 362 is forcibly opened, and the cylinder 364 is deenergized at this position P1 so that the first folding plate 362 is closed and the tip portion thereof is moved. The tip of the open end 12a of the gusset bag 12 is gripped.

Next, when the second swing cam 346 is driven via the cam mechanism 554 and the slider 350 moves in the direction of arrow B via the roller 348 and the guide member 352, the rack 354 provided on this slider 350. The pinion 356 that meshes with rotates. The rotation of the pinion 356 is transmitted to the first opening folding plate 362 via the belt / pulley 360 engaged with the rotating shaft 358, and the first opening folding plate 362 moves upward by 180 ° as shown in FIG. And turns to position P2.

Therefore, the opening end 12a held by the first folding plate 362 is bent 180 ° from the vertically downward direction to the vertically upward direction. In this state, as shown in FIG. 26 and FIG. 27, the mounting base 520 rises via the cam 518 forming the first transfer chuck 500, and the first chuck 524 is bent 180 ° upward at the opening end portion. 12a is gripped from below.

As shown in FIGS. 21 and 22, the slider 332 is driven via the cam mechanism 554 to drive the elevator plate 3
When 34 moves up and the first folding plate 362 reaches the position P3, the slide member 3 moves under the swinging action of the first swinging cam 342.
38 moves in the direction of arrow B, and the first folding plate 362 is conveyed to the position P4. Then, the elevating plate 334 descends via the slider 332, so that the first folding plate 3
After 62 is conveyed to the position P5, the first swing cam 342 and the second swing cam 346 are driven, and the first folding plate 362 is arranged to be directed upward at the position P6.

On the other hand, the first transfer chuck 500 holding the open end portion 12a of the gusset bag 12 is conveyed in the direction of arrow A in synchronization with the conveyor 16 via the cam mechanism 554, and the gusset bag 12 is opened at the first opening. The sheet is conveyed from the folding station 300 to the second folding station 302. This second
In the mouth folding station 302, as shown in FIG.
The second folding plate 402 constituting the second folding means 370 operates as shown from the position P1a to the position P6a, and the opening end portion 12a after the first folding process is further rotated by 180 °.
The second folding step is performed by folding back.

The operation of the second folding means 370 is substantially the same as that of the first folding means 330 described above, and will be schematically described below with reference to FIG. First, the slide member 3
78 moves in the direction of arrow C via the first swing cam 384 and ascends via the slider 372, and the second folding plate 402 is arranged at the position P1a in FIG. When the first folding part of the opening end 12a is gripped by the folding plate 402, the first chuck 524 constituting the first transfer chuck 500 descends via the mounting base 520, and the first chuck 524 opens the opening. It separates from the end 12a. The first transfer chuck 500 is moved in the direction opposite to the arrow A direction via the cam mechanism 554 while being lowered in the second folding station 302, and is arranged in the first folding station 300.

After the second opening folding plate 402 holds the opening end 12a (first opening folding portion) of the gusset bag 12, the rack 394 is driven by the second swing cam 388 as shown in FIG. And the rotary shaft 398 is rotated via the pinion 396, and the second shaft is rotated under the second movement of the belt / pulley 400.
The mouth folding plate 402 rotates upward by about 180 °. As a result, the open end 12a of the gusset bag 12 is further folded upward by 180 °, and the second mouth folding step is performed. Then, the slider 372 and the first and second swing cams 38
Under the driving action of Nos. 4 and 388, the second folding plate 402 passes through the positions P2a to P6a and reaches the position P1a again, and stands by for the next second folding process of the gusset bag 12.

In FIG. 30, when the second folding process is performed on the opening end 12a at the position P2a, as shown in FIG. 26, the second transfer chuck 502 rises and the second opening of the opening end 12a is opened. After the folding part is gripped and the second folding plate 402 is detached from the second folding part (see position P3a), the second transfer chuck 502 is moved to the third folding station 304 in synchronization with the transport conveyor 16. Moving.

At the third folding station 304, the third
The third folding plate 412 forming the folding means 410 performs the operation shown in FIG. 31 from the position P1b to the position P6b, and the third folding process is performed on the opening end 12a subjected to the double folding process. Give. The third folding means 410 is
The second folding means 370 operates similarly to the above-described second folding means 370, and a detailed description thereof will be omitted.

With the third folding plate 412 reaching the position P2b and the opening end 12a of the gusset bag 12 being subjected to the third folding process, the third transfer chuck 504 shown in FIGS. 26 and 28 is driven. It That is, the cylinder 532 is driven, the swinging member 534 swings via the fulcrum 536, and the pressing plate 538 opens the end portion 12 a of the gusset bag 12.
The (third mouth folding part) is pressed and held. In this state, the first transfer chuck 500, the second transfer chuck 502 and the third transfer chuck 502
The transfer chuck 504 integrally moves along the guide rail 510 in the direction of the arrow A in synchronization with the conveyor 16.
The third transfer chuck 504 is conveyed to a position corresponding to the sealing mechanism 30.

As described above, in the mouth folding mechanism 28, the opening end portion 1 of the gusset bag 12 at the first mouth folding station 300.
After the 2a is bent vertically downward by the folding means 308, the opening end 12a is folded upward by approximately 180 ° by the first folding means 330, and further the second folding station 302 performs the second folding operation. After being folded up by 180 ° through the folding means 370, it is folded up vertically by 180 ° through the third folding means 410 at the third folding station 304, and as a result, it is folded three times. Processing is performed.

The gusset bag 12 having the opening end 12a subjected to the mouth folding process three times, that is, the mouth folding portion 26 held by the third transfer chuck 504 corresponds to the sealing mechanism 30 from the second mouth folding station 302. After being conveyed to the position, the pressing rod 540 protrudes to press and hold the mouth folding part 26, and the pressing plate 538 is operated from the mouth folding part 26 under the action of the cylinder 532 that constitutes the third transfer chuck 504. break away. The third transfer chuck 504 is
First transfer chuck 500 and second transfer chuck 502
After descending at an earlier point, they move integrally with them in the direction opposite to the arrow A direction to move to the third folding station 304.
It is arranged corresponding to.

In the sealing mechanism 30, as shown in FIG. 1, the cylinder 542 is driven by the pressing rod 540 while the mouth-folding portion 26 of the gusset bag 12 is held, and the roller 544 is driven.
Is advanced to the gusset bag 12 side and the tape 546 cut into a predetermined length is attached to the mouth-folding portion 26. Then, after the step of sealing the gusset bag 12 is completed, the gusset bag 12 is sent out from the conveyor 16 to the next step.

By the way, the products 20 are usually prepared in various sizes. Therefore, in the bag filling and sealing device 10, various adjustment operations are performed in response to changes in the dimensions of the product 20 and the gusset bag 12 in which the product 20 is housed.

That is, in the opening mechanism 18, as shown in FIG. 5, the motor 88 constituting the interval adjusting means 81 is driven and the second supporting member 90 is rotated by the rotation of the ball screw 89.
Moves in the direction of arrow A. As a result, the distance between the gusset rollers 72a and 72b is adjusted according to the width of the new gusset bag 12.

The upper suction plate 10 which constitutes the suction means 70 in accordance with the change in the height of the new gusset bag 12.
The ascending height position of the ascending / descending frame body 106 to which 2a to 102d are attached, and the suction plate 118 that constitutes the bottom suction means 74.
The ascending height position of is changed.

In the insertion mechanism 22, a new gusset bag 12 is added.
The horizontal moving means 147 and the vertical moving means 149 that constitute the corner guide means 140 are driven according to the width dimension and the height dimension of the corner guide means 140 (see FIG. 11). The ball screw 1 is inserted through the motor 160 that constitutes the horizontal moving means 147.
By rotating 62, the movable frame 158 moves in the horizontal direction to move the upper guide member 143a and the lower guide member 14 to each other.
5a, the upper guide member 143b, and the lower guide member 145b are adjusted in interval. On the other hand, when the sliders 150a and 150b forming the vertical moving means 149 are moved up and down, the upper guide members 143a and 143b and the lower guide member 1 are moved.
The intervals of 45a and 145b are adjusted.

Further, in the insertion mechanism 22, the space adjusting means 176 forming the pushing means 142 is driven (see FIGS. 13 and 14). A motor 178 that constitutes the interval adjusting means 176 is driven to drive the belt / pulley 180.
When the ball screw 182 is rotated via, the movable guide member 174a moves in the horizontal direction integrally with the slide base 186a. As a result, as shown in FIG. 12, the distance between the rollers 170a and 170b and the side guide plate 17 are increased.
The distance between 2a and 172b is adjusted according to the dimensions of the new product 20. The upper suction belt 62 shown in FIG.
Is moved up and down according to the height of the gusset bag 12 after the change.

Then, the height adjusting work of the opening end forming mechanism 24 and the mouth folding mechanism 28 is performed. That is, FIG.
As shown in FIG. 4, when the ball screw 40 is rotated via the motor 38 that constitutes the elevating means 36, the guide rail 43
The movable main body 32 moves up and down with respect to the fixed main body 34 under the guiding action of a. Therefore, the opening end forming mechanism 24 and the mouth folding mechanism 28 mounted on the movable body 32, specifically, the first and second forming claws 230a and 230b, the closing means 232, the bending means 308, and the first to second. The height of the third folding means 330, 370, 410 and the transfer means 306 are integrally adjusted.

In the sealing mechanism 30, the height positions of the pressing rod 540 and the roller 544 are adjusted according to the position of the mouth-folding portion 26 of the new gusset bag 12.

As described above, in this embodiment, it is possible to easily deal with the change in the size of the product 20 and the gusset bag 12 in which the product 20 is accommodated, and it is possible to obtain an advantage that the versatility is excellent.

Further, the opening end forming mechanism 24 and the mouth folding mechanism 28 are mounted on the movable main body 32, and the movable main body 32 is fixed by the elevating means 36.
The height of the opening end forming mechanism 24 and the mouth folding mechanism 28 are integrally adjusted by simply moving up and down. In particular, since the opening end portion 12a of the gusset bag 12 is subjected to the mouth-folding processing a plurality of times (for example, three times), the mouth-folding mechanism 28 includes a plurality of (for example, three) first to third mouth-folding means 330, 370 and 410, the first
-It is not necessary to individually adjust the third folding means 330, 370 and 410.

As a result, in the present embodiment, since the work is performed individually, the opening end portion forming mechanism 24 and the mouth folding mechanism 2 which are considerably complicated and time-consuming.
8 adjustment work can be performed easily in a short time.
Also, the preparation process for changing the dimensions of the gusset bag 12 is simplified at once. Therefore, it is possible to effectively carry out the bag filling operation for the products 20 having various sizes.

[0116]

The bag filling and sealing apparatus according to the present invention has the following effects and advantages.

When the dimensions of the packaging bag and the article to be packaged are changed, at least the opening end forming mechanism and the mouth folding mechanism are integrally adjusted in position by only moving the movable main body up and down with respect to the conveyor. . Therefore, the preparation process for changing the size of the packaging bag and the packaged object is simplified at once, and the bagging work of the packaged objects of various sizes can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a schematic perspective configuration diagram of an entire bag filling and sealing apparatus according to the present invention.

FIG. 2 is an explanatory plan view of a movable main body and a fixed main body that constitute the bag filling and sealing device.

FIG. 3 is a partial perspective view illustrating an elevating means of the movable main body.

FIG. 4 is a schematic side view of an opening mechanism that constitutes the bag filling and sealing device.

FIG. 5 is a plan view showing a drive system of a gusset roller that constitutes the opening mechanism.

FIG. 6 is a side view showing a drive system of the gusset roller.

FIG. 7 is a front view of a suction unit that constitutes the opening mechanism.

FIG. 8 is a side view of bottom forming means that constitutes the opening mechanism.

FIG. 9 is a side view illustrating an insertion mechanism that constitutes the bag filling and sealing device.

FIG. 10 is a perspective view of a main part of the insertion mechanism.

FIG. 11 is an explanatory front view of a corner guide unit that constitutes the insertion mechanism.

FIG. 12 is an explanatory plan view of a pushing means that constitutes the insertion mechanism.

FIG. 13 is a plan view illustrating an interval adjusting unit of the pushing unit.

FIG. 14 is a rear view of the pushing means.

FIG. 15 is a perspective view of a main part of an opening end part forming mechanism which constitutes the bag filling and sealing device.

FIG. 16 is a plan view illustrating a driving means of a molding claw that constitutes the opening end molding mechanism.

FIG. 17 is a side view of the driving means for the forming claw.

FIG. 18 is a perspective view of a closing means that constitutes the opening end forming mechanism.

FIG. 19 is a side view of the closing means.

FIG. 20 is a front explanatory view of a drive mechanism of a third upper and lower holding plate which constitutes the closing means.

FIG. 21 is a side view of the first folding station of the folding mechanism that constitutes the bag filling and sealing apparatus.

FIG. 22 is a front view showing the first folding station.

FIG. 23 is a plan view of first folding means provided in the first folding station.

FIG. 24 is a perspective view of second folding means arranged in a second folding station that constitutes the folding mechanism.

FIG. 25 is a perspective view of third folding means arranged in a third folding station that constitutes the folding mechanism.

FIG. 26 is an explanatory front view of a transfer unit that constitutes the mouth-folding mechanism.

FIG. 27 is a side view of a first transfer chuck constituting the transfer means.

FIG. 28 is a side view of a third transfer chuck that constitutes the transfer means.

FIG. 29 is a view for explaining the operation of the first folding plate in the first folding station.

FIG. 30 is a view for explaining the operation of the second folding plate in the second folding station.

FIG. 31 is an operation explanatory diagram of the third folding plate in the third folding station.

[Explanation of symbols]

10 ... Bagging and sealing device 12 ... Gusset bag 12a ... Opening end 16 ... Conveyor 18 ... Opening mechanism 20 ... Product 22 ... Inserting mechanism 24 ... Opening end forming mechanism 26 ... Folding part 28 ... Folding mechanism 30 ... Sealing mechanism 32 ... Movable main body 34 ... Fixed main body 36 ... Elevating means 60 ... Lower suction belt 62 ... Upper suction belt 70 ... Suction means 72a, 72b
... Gusset roller 74 ... Bottom suction means 76 ... Bottom molding means 80 ... Opening / closing means 81 ... Interval adjusting means 100a-100d ... Lower suction plate 102a-10
2d ... Upper suction plate 118 ... Suction plate 132 ... Forming plate 140 ... Corner guide means 142 ... Extrusion means 143a, 143b ... Upper guide member 144 ... Insert conveyor 145a, 145b ... Lower guide member 146a, 14
6b ... Rotating shaft 147 ... Horizontal moving means 149 ... Vertical moving means 170a, 170b ... Rollers 172a, 17
2b ... Side guide plate 176 ... Spacing adjusting means 230a, 23
0b ... Forming claw 232 ... Closing means 234 ... Driving means 256a to 256c ... Upper holding plate 258a to 25c
8c ... Lower clamping plate 300, 302, 304 ... Folding station 306 ... Transfer means 308 ... Folding means 330, 370, 410 ... Folding means 362, 40
2, 412 ... Folding plates 500, 502, 504 ... Transfer chuck 552 ... Motor 554 ... Cam mechanism

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Ishii, 210 Nakanuma, Minamiashigara-shi, Kanagawa Fuji Shashin Film Co., Ltd. (56) Reference JP 5-305923 (JP, A) Japanese Patent Publication 4-87910 (JP, B2) Japanese Patent Publication No. 4-102505 (JP, B2) Jpn. Sho 60-112403 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65B 7/00 B65B 67 / 00

Claims (5)

(57) [Claims] 1. A conveyor for conveying a packaging bag having an opening at one end in a posture in which the opening crosses the conveying direction, and the packaging bag before inserting the article to be packaged into the packaging bag. An opening mechanism for forcibly forming into a predetermined opening shape, an insertion mechanism for inserting the article to be packaged into the packaging bag opened by the opening mechanism, and a packaging bag in which the article to be packaged is inserted. An opening end forming mechanism for forming the opening end of the flat shape, a mouth folding mechanism for forming the mouth folding portion by folding back the opening end formed in the flat shape, the packaging bag and the Corresponding to changes in the size of the packaged item,
A bag filling and sealing apparatus, comprising: at least the opening end forming mechanism and the movable main body capable of integrally raising and lowering the mouth folding mechanism with respect to the transport conveyor. 2. The bag filling and sealing apparatus according to claim 1,
The opening mechanism includes suction means for sucking the packaging bag from above and below to forcibly open the packaging bag, and inward gussets formed on both sides of the packaging bag to enter the packaging bag. A pair of gusset rollers to spread from, the opening and closing means for displacing the pair of gusset rollers in the width direction of the packaging bag in the packaging bag, the separation distance between the pair of gusset rollers of the width dimension of the packaging bag A bag filling and sealing device comprising: a space adjusting means that can be adjusted according to a change. 3. The bag filling and sealing device according to claim 1,
The insertion mechanism includes corner guide means for maintaining the shape of both sides of the packaging bag by entering the opened packaging bag and engaging both sides of the packaging bag, and the corner guide means are parallel to each other. And a vertically rotatable first and second rotatable shafts extending in the vertical direction, and a first upper provided on the first and second rotatable shafts and vertically engaged with both side portions of the packaging bag. A guide member, a first lower guide member, a second upper guide member, a second lower guide member, and at least the first rotating shaft with respect to the second rotating shaft in response to a change in the width dimension of the packaging bag. Horizontal moving means for moving forward and backward, and vertical moving means for moving the first and second upper guide members up and down with respect to the first and second lower guide members in response to changes in the height dimension of the package. A bag filling and sealing device, comprising: 4. The bag filling and sealing apparatus according to claim 1 or 3, wherein the insertion mechanism includes a pushing means for inserting the article to be packaged into the packaging bag, and the pushing means is the article to be packaged. A pair of rollers that press while centering the package, a pair of side guide plates that are arranged on both sides of the package and that prevent contact between the package and the packaging bag, and a size of the package. A bag filling and sealing device, comprising: a gap adjusting unit that adjusts a gap between the pair of rollers and a pair of the side guide plates according to a change. 5. The bag filling and sealing apparatus according to claim 1,
The opening end forming mechanism is arranged outside both side portions of the packaging bag, and swings in a direction toward each other to fold inward gussets formed on both side portions of the packaging bag. Forming claws, closing means for closing the opening end of the packaging bag folded by the first and second forming claws, and the first and second forming claws corresponding to the change in the width dimension of the packaging bag. A bag filling and sealing device, comprising: a moving unit that adjusts a distance between the bags.