JP2021066496A - Bag-making filling packaging machine - Google Patents

Abstract

To provide a bag-making filling packaging machine by which a workload resulting from replacement of a seal block is reduced.SOLUTION: A bag-making filling packaging machine comprises a pair of shafts (101, 102) extending in a direction orthogonal to a feed direction; and a first seal block (111) obtained by alternately forming a projection strip and a recess strip on a contact surface, and first positioning members (113a, 113b) for positioning the first seal block; comprises a first seal unit (110) attachable/detachable to the pair of shafts (101, 102); and a second seal block (121) obtained by alternately forming the projection strip and the recess strip on the contact surface, and second positioning members (122a, 122b) for positioning the second seal block (111); and comprises a second seal unit (120) attachable/detachable to the pair of shafts (101, 102), and a contact/separation mechanism for contacting/separating the first and second seal blocks (111, 121) along an extending direction of the pair of shafts (101, 102).SELECTED DRAWING: Figure 6

Description

The present invention relates to a bag-making filling and packaging machine that fills a bag formed from a strip-shaped packaging material with a product.

Conventionally, a long packaging material is bent into a tubular shape by a former, the overlapping vertical edges are welded by a vertical sealing member, and the top part and the bottom part are sealed by a horizontal sealing mechanism inside. A vertical pillow wrapping machine for filling an object to be packaged is known (see, for example, Patent Document 1).

In the vertical pillow packaging machine described in Patent Document 1, a tubular packaging material is sandwiched between a pair of horizontal seal jaws (seal blocks) having a U-shaped cross section, and an upper portion having a plurality of uneven stripes that mesh with each other is provided. The bottom portion of the packaging material is welded by the joint surface, and the top portion of the packaging material is welded by the joint surface at the bottom.

Further, the patent document describes that it is necessary to change the uneven stripes according to the material and thickness of the packaging material, the laminating conditions, etc., and that the length of the seal block differs depending on the size of the bag to be molded, etc. Has been done. In addition, it is necessary to replace the seal block depending on the design of the bag, the characteristics of the film used, and the presence or absence of a hook insertion hole.

Japanese Unexamined Patent Publication No. 8-301236

However, when replacing the pair of seal blocks, it is necessary to realign them with high accuracy so that the ridges and dents mesh with each other. Therefore, there is a problem that the work load associated with the replacement of the seal block is large.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bag-making filling / packaging machine that reduces the work load associated with replacement of a seal block.

The present invention is a bag-making filling and packaging machine that fills a bag formed from a strip-shaped packaging material with a product in order to solve the above-mentioned problems. It is provided with a sealing device that sandwiches and seals the overlapped portion, and a product filling cylinder that fills a bag formed from a strip-shaped packaging material by being sealed by the sealing device with a product supplied from the product supply device. The sealing device includes a pair of shafts extending in a direction orthogonal to the feeding direction of the strip-shaped packaging material, a first sealing block in which ridges and dents are alternately formed on the contact surface, and the first seal. A first seal unit having a first positioning member for positioning the block on the pair of shafts and detachable from the pair of shafts, and a second seal block having ridges and dents alternately formed on the contact surface. A second positioning member for positioning the second seal block is provided at a position where the protrusions and recesses mesh with each other when the contact surfaces of the first and second seal blocks come into contact with each other. A second seal unit that can be attached to and detached from the pair of shafts on the opposite side of the feed path from the first seal unit, and the first and second seal blocks are attached along the extending direction of the pair of shafts. It is characterized by having a separation mechanism for separating.

According to the present invention, since the positioning work at the time of replacing the seal block can be omitted, the work load associated with the replacement of the seal block can be reduced.

It is the whole perspective view of the vertical bag making filling packaging machine. It is a side view of the vertical bag making filling packaging machine. It is a perspective view of the horizontal sealing device. It is an exploded perspective view of an opening / closing unit. It is an assembly perspective view of an opening / closing unit. It is a top view of the opening / closing unit. It is a figure which shows the 2nd seal unit, (A) is a front view, (B) is a side view. It is a side view of the 1st seal block and the 2nd seal block, (A) is a separated view, and (B) is a contacted view. It is a block diagram of a control device. It is a figure explaining the modification of the structure of attaching and detaching the 2nd seal unit to a pair of guide shafts. It is a figure which shows another example of the connection form of a seal block and a control device.

Hereinafter, the vertical bag-making filling / packaging machine 1 according to the embodiment will be described with reference to the drawings. It should be noted that the embodiments of the present invention described below show an example when embodying the present invention, and the scope of the present invention is not limited to the scope described in the embodiments. Therefore, the present invention can be implemented with various modifications to the embodiments.

FIG. 1 is an overall perspective view of a vertical bag-making filling / packaging machine (bag-making filling / packaging machine) 1. FIG. 2 is a side view of the vertical bag-making filling / packaging machine 1. In the present specification, in the horizontal sealing device 5 described later, the side on which the first sealing unit 110 is installed is defined as "rear", and the side on which the second sealing unit 120 is installed is defined as "front". The left-right direction is defined with reference to the case where the mold-making bag filling / packaging machine 1 is viewed from the front.

The vertical bag-making filling and packaging machine 1 is an apparatus for molding a strip-shaped film Fw (belt-shaped packaging material) into a bag Bp and filling the molded bag Bp with a product. The vertical bag-making filling and packaging machine 1 mainly includes a film transfer device 10, a feeding device 20, a product filling cylinder 30, a vertical sealing device 40, a horizontal sealing device 50, and a control device 60.

The strip-shaped film Fw is a strip-shaped packaging material that is a material for a bag for packaging a product. The strip-shaped film Fw is a film-like member that can be welded by applying heat, and is, for example, polyethylene (PE), polyethylene terephthalate (PET), biaxially stretched polypropylene (OPP), aluminum backing paper, or aluminum. Examples include vaporized paper. Products refer to granular foods such as candies, bean confectionery, and snacks. However, specific examples of products are not limited to these, and include all products packaged in a bag Bp and shipped.

The film transport device 10 is a device that transports the strip-shaped film Fw wound on the take-up roll 11 to the feed device 20. The film transport device 10 mainly includes a take-up roll 11, a plurality of fixed guide rolls 12a to 12h, a tension mechanism 13, and a cylinder making device 14.

The winding roll 11 rotates in the direction in which the strip-shaped film Fw is unwound by transmitting the driving force of the motor (not shown). The fixed guide rolls 12a to 12h are arranged in the feed path of the strip film Fw from the take-up roll 11 to the cylinder making device 14, and guide the strip film Fw conveyed along the feed path. The tension mechanism 13 applies an appropriate tension to the strip-shaped film Fw conveyed along the feed path.

The cylinder making device 14 forms the strip-shaped film Fw into a tubular shape by superimposing both ends of the strip-shaped film Fw in the width direction. Further, the cylinder making device 14 sends the strip-shaped film Fw formed into a tubular shape downward toward the product filling cylinder 30. The strip-shaped film Fw formed into a tubular shape by the cylinder making device 14 moves downward along the outer surface of the product filling cylinder 30.

The date printing device 15 and the date inspection device 16 are arranged so as to face the feeding path of the strip-shaped film Fw from the winding roll 11 to the cylinder making device 14. The date printing device 15 prints a date (for example, a date of manufacture, an expiration date, an expiration date, etc.) at a predetermined position of the strip-shaped film Fw conveyed by the film conveying device 10. The date inspection device 16 inspects whether the date is properly printed by the date printing device 15.

The feeding device 20 conveys the strip-shaped film Fw conveyed by the film conveying device 10 along a feeding path extending in the vertical direction. More specifically, the feed device 20 includes a pair of feed belts 21 and 22 that face each other with the product filling cylinder 30 interposed therebetween. The driving force of the motor (not shown) is transmitted to the pair of feed belts 21 and 22, and the strip-shaped film Fw covering the outer surface of the product filling cylinder 30 is fed downward toward the lateral sealing device 50. In the present embodiment, the feeding direction of the strip-shaped film Fw by the feeding device 20 is downward.

The product filling cylinder 30 is a tubular member with open upper and lower ends. The product filling cylinder 30 extends in the vertical direction between the cylinder making device 14 and the horizontal sealing device 50 along the feeding direction of the strip-shaped film Fw formed in a tubular shape. The product filling cylinder 30 fills the bag Bp formed by the vertical sealing device 40 and the horizontal sealing device 50 through the lower end opening with the product supplied from the product supply device (not shown) through the upper end opening.

The vertical sealing device 40 is arranged at a position facing the product filling cylinder 30. More specifically, the vertical sealing device 40 is arranged on the downstream side of the cylinder making device 14 and on the upstream side of the horizontal sealing device 50 in the feeding direction of the strip-shaped film Fw by the feeding device 20.

The vertical sealing device 40 includes a pair of sealing blocks 41 and 42 arranged so as to sandwich the overlapped ends of the strip-shaped films Fw. The pair of seal blocks 41, 42 are separated by transmitting the rotation of the motor (not shown). A heater is built in each of the pair of seal blocks 41 and 42. Then, the pair of seal blocks 41, 42 weld (seal) both ends in the width direction by sandwiching and heating the overlapped ends of the strip-shaped film Fw. As a result, the strip-shaped film Fw is formed into a tubular shape.

The horizontal sealing device 50 forms the strip-shaped film Fw into the bag Bp by welding (sealing) the strip-shaped film Fw formed into a tubular shape at predetermined intervals. More specifically, the lateral sealing device 50 seals a portion corresponding to the bottom of the bag Bp and a portion corresponding to the top of the bag Bp. FIG. 3 is a perspective view of the horizontal sealing device 50. As shown in FIG. 3, the lateral sealing device 50 mainly includes a pair of elevating guide shafts 51 and 52, a pair of elevating blocks 53 and 54, and an opening / closing unit 100.

The pair of elevating guide shafts 51 and 52 are arranged so as to sandwich the feed path of the strip-shaped film Fw. Further, each of the pair of elevating guide shafts 51 and 52 extends in parallel with the feeding direction (that is, the vertical direction) of the strip-shaped film Fw. The pair of elevating blocks 53, 54 are supported by the corresponding elevating guide shafts 51, 52. Further, the pair of elevating blocks 53 and 54 support the opening / closing unit 100.

The pair of elevating blocks 53 and 54 move up and down together with the opening / closing unit 100 along the pair of elevating guide shafts 51 and 52 by transmitting the driving force of the motor 55 through the crank mechanism 56. As a result, the box motion operation of the horizontal sealing device 50 is realized. Since the box motion operation itself is known, the description in this specification will be omitted.

The opening / closing unit 100 plays a role of sealing the portion corresponding to the bottom of the bag Bp and the portion corresponding to the top of the bag Bp by bringing the first seal block 111 and the second seal block 121 into contact with each other. The opening / closing unit 100 is arranged between the pair of elevating guide shafts 51 and 52. The opening / closing unit 100 mainly includes a pair of opening / closing guide shafts (shafts) 101 and 102, a first seal unit 110, a second seal unit 120, and a separation mechanism 130.

FIG. 4 is an exploded perspective view of the opening / closing unit 100. FIG. 5 is an assembled perspective view of the opening / closing unit 100. FIG. 6 is a plan view of the opening / closing unit 100. 7A and 7B are views showing the second seal unit 120, in which FIG. 7A is a front view and FIG. 7B is a side view. 8A and 8B are side views of the first seal block 111 and the second seal block 121, in which FIG. 8A is a separated view and FIG. 8B is a contacted view.

As shown in FIG. 3, the pair of opening / closing guide shafts 101 and 102 are arranged so as to sandwich the feed path of the strip-shaped film Fw. Further, the pair of opening / closing guide shafts 101 and 102 extend in the front-rear direction (horizontal direction) orthogonal to the feeding direction of the strip-shaped film Fw. Further, the pair of opening / closing guide shafts 101 and 102 support the first holder 103 and the rear end block 107.

The first holder 103 is attached to a pair of opening / closing guide shafts 101 and 102. Further, the first holder 103 is configured to be slidable in the front-rear direction along the pair of opening / closing guide shafts 101 and 102. Further, the first holder 103 is arranged between the second seal unit 120 and the rear end block 107 in the extending direction of the pair of opening / closing guide shafts 101 and 102.

As shown in FIGS. 4 and 6, the first holder 103 has a plurality of bolt holes 104a and 104b into which bolts 114a and 114b are screwed, and a plurality of positioning recesses 105a into which positioning pins 113a and 113b are inserted. The 105b and a plurality of recesses 106a and 106b into which the heads of the bolts 118a and 118b are inserted are formed. The bolt holes 104a and 104b, the positioning recesses 105a and 105b, and the recesses 106a and 106b are provided apart from each other in the left-right direction.

The positioning recesses 105a and 105b play a role of positioning the first seal unit 110 with respect to the first holder 103 by receiving the positioning pins 113a and 113b. Therefore, the inner surface shapes (diameters) of the positioning recesses 105a and 105b are the same as the shapes (diameters) of the positioning pins 113a and 113b. On the other hand, the recesses 106a and 106b are relief holes for letting the heads of the bolts 118a and 118b escape. Therefore, the diameters of the recesses 106a and 106b are larger than the heads of the bolts 118a and 118b.

As shown in FIGS. 4 to 6, the first seal unit 110 includes a first seal block 111, a base plate 112, and a plurality of positioning pins 113a and 113b (first positioning members). The first seal unit 110 is configured to be indirectly removable from the pair of opening / closing guide shafts 101 and 102 in a state where the first seal block 111, the base plate 112, and the plurality of positioning pins 113a and 113b are integrated. ing. More specifically, the first seal unit 110 is attached to and detached from the first holder 103 attached to the pair of opening / closing guide shafts 101 and 102 by the bolts 114a and 114b inserted into the bolt holes 104a and 104b.

The first seal block 111 is a prism long in the left-right direction. The length of the first seal block 111 in the left-right direction is appropriately set according to the width of the bag Bp to be molded. The front surface of the first seal block 111 is a contact surface that abuts on the second seal block 121. A first sealer 115, a second sealer 116, and a groove 117 are formed on the contact surface of the first seal block 111.

The first sealer 115 plays a role of sealing a portion of the strip-shaped film Fw formed into a tubular shape by the vertical sealing device 40, which corresponds to the top of the bag Bp. As shown in FIG. 8, the first sealer 115 is formed with ridges 115a and dents 115b extending in the left-right direction alternately in the vertical direction.

The second sealer 116 plays a role of sealing a portion of the strip-shaped film Fw formed into a tubular shape by the vertical sealing device 40, which corresponds to the bottom portion of the bag Bp. As shown in FIG. 8, in the second sealer 116, ridges 116a and ridges 116b, each of which extends in the left-right direction, are alternately formed in the up-down direction.

The first sealer 115 is arranged below the second sealer 116. The groove 117 is arranged between the first sealer 115 and the second sealer 116 in the vertical direction. The groove 117 extends in the left-right direction of the first seal block 111. The groove 117 receives the cutter 124 protruding from the second seal block 121.

Further, as shown in FIG. 9, the first seal block 111 includes a first heater 71, a second heater 72, and a temperature sensor 73. The first heater 71 receives power (AC 200V) from the control device 60 through _{the power line L 71 to heat the first sealer 115.} The second heater 72 receives power (AC 200V) from the control device 60 through _{the power line L 72 to heat the second sealer 116.} The temperature sensor 73 detects the temperature of the first seal block 111, and outputs a detection signal (potential difference) indicating the detection result to the control device 60 through the _{signal line L 73.}

_{The pair of power lines L 71} and the pair of signal lines L ₇₃ extending from the first seal block 111 are bundled in the first socket 76. On the other hand, the pair of power lines L ₇₂ are branched from the pair of power lines L _71. That is, the first socket 76 bundles a plurality of (four) wires extending from the first seal block 111. The first socket 76 is detachably configured to be attached to and detached from the first outlet 64 of the control device 60.

As shown in FIG. 6, the base plate 112 is a flat plate-shaped member having a length in the left-right direction longer than that of the first seal block 111. The base plate 112 is fixed to the back surface of the first seal block 111 opposite to the contact surface by a plurality of bolts 118a and 118b. The heads of the bolts 118a and 118b project from the base plate 112 toward the side opposite to the first seal block 111. Further, the base plate 112 is formed with bolt holes 112a and 112b at positions capable of communicating with the bolt holes 104a and 104b.

The positioning pins 113a and 113b project from the base plate 112 toward the side opposite to the first seal block 111. The positioning pins 113a and 113b are arranged at positions separated from each other in the left-right direction. The positioning pins 113a and 113b play a role of positioning the first seal block 111 at a predetermined position between the pair of opening / closing guide shafts 101 and 102 when the first seal unit 110 is mounted on the first holder 103. .. More specifically, the positioning pins 113a and 113b determine the positions of the first seal unit 110 in the vertical direction and the horizontal direction.

The first seal unit 110 is attached to the first holder 103 by the following procedure. First, when the positioning pins 113a and 113b are inserted into the positioning recesses 105a and 105b, the heads of the bolts 118a and 118b enter the recesses 106a and 106b, and the bolt holes 104a and 104b of the first holder 103 and the bolt holes of the base plate 112. 112a and 112b communicate with each other. Then, the bolt 114a is screwed into the communicated bolt holes 104a and 112a, and the bolt 114b is screwed into the communicated bolt holes 104b and 112b. Further, the first socket 76 of the first seal block 111 is attached to the first outlet 64 of the control device 60.

As shown in FIGS. 4 to 7, the second seal unit 120 includes a second seal block 121, a plurality of positioning bolts 122a, 122b, 122c, 122d (second positioning members), a second holder 123, and a cutter. Mainly equipped with 124. The positioning bolt 122d is not shown. Then, the second seal unit 120 is directly connected to the pair of opening / closing guide shafts 101 and 102 in a state where the second seal block 121, the plurality of positioning bolts 122a to 122d, the second holder 123, and the cutter 124 are integrated. It is configured to be removable. More specifically, the second seal unit 120 is attached to the front ends of the pair of opening / closing guide shafts 101 and 102 by the pair of attachment / detachment portions 129a and 129b provided on the second holder 123.

The second seal block 121 is a prism long in the left-right direction. The length of the second seal block 121 in the left-right direction coincides with that of the first seal block 111. The front surface of the second seal block 121 is a contact surface that abuts on the first seal block 111. A first sealer 125, a second sealer 126, and a groove 127 are formed on the contact surface of the second seal block 121. Further, a plurality of bolt holes 121a and 121b are formed at positions separated in the left-right direction on the back surface of the second seal block 121 on the side opposite to the contact surface.

The first sealer 125 plays a role of sealing a portion of the strip-shaped film Fw formed into a tubular shape by the vertical sealing device 40, which corresponds to the top of the bag Bp. As shown in FIG. 8, in the first sealer 125, ridges 125a and ridges 125b, each of which is extended in the left-right direction, are alternately formed in the up-down direction.

The second sealer 126 plays a role of sealing a portion of the strip-shaped film Fw formed into a tubular shape by the vertical sealing device 40, which corresponds to the bottom portion of the bag Bp. As shown in FIG. 8, in the second sealer 126, ridges 126a and ridges 126b, each of which extends in the left-right direction, are alternately formed in the up-down direction.

The first sealer 125 is located below the second sealer 126. The groove 127 is arranged between the first sealer 125 and the second sealer 126. The groove 127 extends in the left-right direction of the second seal block 121. A cutter 124 is housed inside the groove 127. The cutter 124 is configured to be able to move in and out of the groove 127 by an air cylinder 124a. The cutter 124 is responsible for cutting the boundary between a plurality of bags Bp that are continuously formed.

Further, as shown in FIG. 9, the second seal block 121 includes a first heater 81, a second heater 82, and a temperature sensor 83. The first heater 81 receives power (AC 200V) from the control device 60 through _{the power line L 81 to heat the first sealer 125.} The second heater 82 receives power (AC 200V) from the control device 60 through _{the power line L 82 and heats the second sealer 126.} The temperature sensor 83 detects the temperature of the second seal block 121, and outputs a detection signal (potential difference) indicating the detection result to the control device 60 through the _{signal line L 83.}

_{The pair of power lines L 81} and the pair of signal lines L ₈₃ extending from the second seal block 121 are bundled in the second socket 86. On the other hand, the pair of power lines L ₈₂ are branched from the pair of power lines L _81. That is, the second socket 86 bundles a plurality of (four) wires extending from the second seal block 121. The second socket 86 is detachably configured to be attached to and detached from the second outlet 65 of the control device 60.

As shown in FIGS. 4 to 7, the positioning bolts 122a to 122d are screwed into the facing surface of the second holder 123 facing the back surface of the second seal block 121, and the head hits the back surface of the second seal block 121. I'm in contact. However, the positioning bolts 122a to 122d may be screwed into the back surface of the second seal block 121, and the head may be in contact with the facing surface of the second holder 123. Further, the positioning bolts 122a to 122d are arranged apart from each other in the vertical direction and the horizontal direction between the second seal block 121 and the second holder 123.

As shown in FIG. 6, the positioning bolts 122a and 122b are arranged above the bolts 128a and 128b so as to be separated from each other in the left-right direction. Although not shown, the positioning bolts 122c and 122d are arranged below the bolts 128a and 128b so as to be separated from each other in the left-right direction. Further, the positioning bolts 122a and 122c and the positioning bolts 122b and 122d are arranged symmetrically with respect to the center of the second holder 123 (in other words, the second seal block 121).

As shown in FIGS. 6 and 7B, the positioning bolts 122a and 122c are arranged vertically separated from each other on the left side of the bolts 128a and 128b. Although not shown, the positioning bolts 122b and 122d are arranged on the right side of the bolts 128a and 128b so as to be separated from each other in the vertical direction. Further, the positioning bolts 122a and 122b and the positioning bolts 122c and 122d are arranged vertically symmetrically with respect to the center of the second holder 123 (in other words, the second seal block 121).

Then, by changing the protrusion amount of each of the positioning bolts 122a to 122d, the inclination of the second seal block 121 with respect to the facing surface of the second holder 123 is adjusted. The "protruding amount of the positioning bolts 122a to 122d" refers to the distance from the surface on which the positioning bolts 122a to 122d are screwed (in the present embodiment, the facing surface of the second holder 123) to the tip of the head.

More specifically, by changing the amount of protrusion of the positioning bolts 122a and 122c and the positioning bolts 122b and 122d, the inclination of the second seal block 121 with respect to the facing surface in the left-right direction is adjusted. Further, by changing the amount of protrusion of the positioning bolts 122a and 122b and the positioning bolts 122c and 122d, the inclination of the second seal block 121 with respect to the facing surface in the vertical direction is adjusted.

The second holder 123 is attached to the second seal block 121 with the positioning bolts 122a to 122d interposed therebetween. More specifically, the second holder 123 is formed with a plurality of bolt holes 123a and 123b separated in the left-right direction. Then, the bolt holes 121a and 121b of the second seal block 121 and the bolt holes 123a and 123b of the second holder 123 are communicated with each other, and the bolts 128a and 128b are screwed into the second seal block 121 and the second. The holder 123 is fixed.

As shown in FIGS. 4 to 7, the second holder 123 has a pair of detachable portions 129a and 129b. The attachment / detachment portions 129a and 129b play a role of attaching / detaching the second holder 123 (in other words, the second seal unit 120) to / from the pair of opening / closing guide shafts 101 and 102.

The detachable portions 129a and 129b cover the first arc portions 129a1 and 129b1 that cover the opening / closing guide shafts 101 and 102 from above and the opening / closing guide shafts 101 and 102 from below and are detachable from the first arc portions 129a1 and 192b1. The opening / closing guide shafts 101 and 102 are sandwiched by fastening the arc portions 129a2 and 129b2 with the bolts 129a3 and 129b3.

The second seal unit 120 is attached to the pair of opening / closing guide shafts 101 and 102 according to the following procedure. First, the second seal unit 120 is placed on the pair of opening / closing guide shafts 101 and 102 so that the opening / closing guide shafts 101 and 102 are covered by the first arc portions 129a1 and 129b1 from above.

Next, the opening / closing guide shafts 101 and 102 are covered with the second arc portions 129a2 and 129b2 from below, and the first arc portions 129a1 and 129b1 and the second arc portions 129a2 and 129b2 are fastened with the bolts 129a3 and 129b3. Further, the second socket 86 of the second seal block 121 is attached to the second outlet 65 of the control device 60.

Further, the first seal block 111 is pre-positioned by the positioning pins 113a and 113b as follows before being mounted on the pair of opening / closing guide shafts 101 and 102. Similarly, the second seal block 121 is pre-positioned by the positioning bolts 122a to 122d as follows before being mounted on the pair of opening / closing guide shafts 101 and 102.

First, as shown in FIG. 8A, the first seal block 111 and the second seal block 121 have the first seal unit 110 and the second seal unit 120 so that the contact surfaces face each other in the front-rear direction. Is pre-positioned with respect to. More specifically, in the first seal block 111 and the second seal block 121, the first sealers 115 and 125 face each other, the second sealers 116 and 126 face each other, and the grooves 117 and 127 face each other in the front-rear direction. Positioned to face each other.

Further, in the first sealers 115 and 125, the arrangements of the ridges 115a and 125a and the dents 115b and 125b are reversed in the vertical direction. Similarly, in the second sealers 116 and 126, the arrangements of the ridges 116a and 126a and the ridges 116b and 126b are reversed in the vertical direction.

Then, as shown in FIG. 8B, when the contact surfaces of the first seal block 111 and the second seal block 121 are brought into contact with each other, the ridges 115a enter the ridges 125b and the ridges 125b. The 125a is prepositioned with respect to the first seal unit 110 and the second seal unit 120 so that the ridges 115a enter the ridges 115b, the ridges 116a enter the ridges 126b, and the ridges 126a enter the ridges 116b. ing.

In the present specification, the state shown in FIG. 8B is described as "when the contact surfaces of the first seal block 111 and the second seal block 121 come into contact with each other, the protrusions 115a, 116a, 125a, 126a and the concave portions of each other. Articles 115b, 116b, 125b, 126b mesh with each other. "

Further, as shown in FIG. 8B, the first seal block 111 and the second seal block 121 have a first seal unit so that the grooves 117 and 127 communicate with each other when the contact surfaces are brought into contact with each other. It is pre-positioned with respect to 110 and the second seal unit 120. That is, the cutter 124 protruding from the groove 127 enters the groove 117 in a state where the contact surfaces of the first seal block 111 and the second seal block 121 are in contact with each other.

As shown in FIG. 3, the separation mechanism 130 moves the first seal unit 110 and the second seal unit 120 in the direction of approaching and the direction of separating, thereby moving the first seal block 111 and the second seal block 121. The contact surface of the is cut off. As shown in FIG. 3, the disconnection mechanism 130 mainly includes a motor 131 and a toggle mechanism 132.

The toggle mechanism 132 includes a first arm 133 and a second arm 134 that expand and contract in conjunction with each other by transmitting the driving force of the motor 131. The tip of the first arm 133 is fixed to the first holder 103. The tip of the second arm 134 is fixed to the rear end block 107 attached to the rear end of the pair of opening / closing guide shafts 101, 102 (that is, the end opposite to the attachment position of the second seal unit 120). ..

When the motor 131 is rotated in the first direction, the first arm 133 and the second arm 134 are extended. As a result, the first seal unit 110 mounted on the first holder 103 moves forward, and the rear end block 107, the pair of opening / closing guide shafts 101 and 102, and the second seal unit 120 move backward as a unit. To do. As a result, the contact surfaces of the first seal block 111 and the second seal block 121 come into contact with each other.

On the other hand, when the motor 131 is rotated in the second direction opposite to the first direction, the first arm 133 and the second arm 134 contract. As a result, the first seal unit 110 mounted on the first holder 103 moves rearward, and the rear end block 107, the pair of opening / closing guide shafts 101 and 102, and the second seal unit 120 move forward as a unit. To do. As a result, the contact surfaces of the first seal block 111 and the second seal block 121 are separated from each other.

FIG. 9 is a block diagram of the control device 60. The control device 60 includes, for example, a CPU (Central Processing Unit) 61 which is a calculation means, a ROM (Read Only Memory) 62 which stores various programs, and a RAM (Random Access Memory) 63 which is a work area of the calculation means. Then, each process described later may be realized by the CPU 61 reading and executing the program stored in the ROM 62.

However, the specific configuration of the control device 60 is not limited to this, and may be realized by hardware such as an ASIC (Application Specific Integrated Circuit) and an FPGA (Field-Programmable Gate Array).

Further, the control device 60 includes a first outlet 64 to which the first socket 76 is attached and detached, and a second outlet 65 to which the second socket 86 is attached and detached. Then, the control device 60 uses _{the power lines L 71} , L ₇₂ , and the power lines L 71, L 72, so that the first seal block 111 and the second seal block 121 reach a predetermined temperature based on the detection signals acquired through the _{signal lines L 73} and L _83. The amount of power supplied to the heaters 71, 72, _{81 , 82} through L 81 and L 82 is increased or decreased.

Further, the control device 60 forms a bag Bp from the strip-shaped film Fw by driving various motors and an air cylinder 124a mounted on the film transport device 10, the feed device 20, the vertical seal device 40, and the horizontal seal device 50. The process of filling the product is intermittently repeated.

More specifically, the control device 60 drives the film transport device 10 and the feed device 20 to feed the strip-shaped film Fw in the feed direction by the amount corresponding to the height of one bag Bp. Next, the control device 60 drives the vertical sealing device 40 to seal the overlapped ends of the strip-shaped films Fw between the pair of seal blocks 41 and 42, thereby forming the strip-shaped film Fw into a tubular shape. To do.

Further, the control device 60 drives the horizontal sealing device 50 to form a tubular strip film Fw, which corresponds to the top of the first bag and the bottom of the second bag immediately after the first bag. The portion corresponding to the above is sandwiched between the seal blocks 111 and 121 and sealed. Further, the control device 60 drives the air cylinder 124a to allow the cutter 124 to appear and disappear from the groove 127, thereby cutting the strip-shaped film Fw at the boundary between the first bag and the second bag.

Further, the control device 60 outputs a signal instructing the supply of the product to the product supply device in parallel with driving the vertical seal device 40 and the horizontal seal device 50. As a result, a predetermined amount of the product supplied from the product supply device is filled in the second bag whose bottom is sealed through the product filling cylinder 30. Then, by repeating this process, a bag Bp filled with the product is continuously generated.

According to the above embodiment, for example, the following effects are exhibited.

According to the above embodiment, the first seal block 111, the base plate 112, and the positioning pins 113a and 113b are unitized, and the second seal block 121, the positioning bolts 122a to 122d, and the second holder 123 are unitized. It is attached to and detached from the pair of opening / closing guide shafts 101 and 102.

Therefore, the ridges 115a and 125a and the dents 115b and 125b of the first sealers 115 and 125 mesh with each other, and the ridges 116a and 126a and the ridges 116b and 126b of the second sealers 116 and 126 mesh with each other, and the grooves 117 and 127. If the first and second seal blocks 111 and 121 are positioned in advance so that the first and second seal blocks 111 and 121 can communicate with each other, the positioning work at the time of replacing the first and second seal blocks 111 and 121 can be omitted. As a result, the work load associated with the replacement of the first and second seal blocks 111 and 121 can be reduced.

Further, according to the above embodiment, the base plate 112 and the first holder 103 can be fastened by the bolts 114a and 114b only by inserting the plurality of positioning pins 113a and 113b into the corresponding positioning recesses 105a and 105b. As a result, the work load associated with the replacement of the first seal block 111 can be reduced.

The number of positioning pins 113a and 113b is not limited to two, and may be three or more. Further, the positioning pins 113a and 113b may be omitted, the heads of the bolts 118a and 118b may be used as positioning members, and the recesses 106a and 106b may be used as positioning recesses. That is, the inner surface shape of the recesses 106a and 106b may be the same as the shape of the head of the bolts 118a and 118b. As a result, the number of parts of the vertical bag-making filling and packaging machine 1 can be reduced.

Further, according to the above embodiment, the second arc portions 129a2 and 129b2 are mounted on the first arc portions 129a1 and 129b1 with the second holder 123 mounted on the pair of opening / closing guide shafts 101 and 102. The second holder 123 can be attached to the pair of opening / closing guide shafts 101 and 102. As a result, the work load associated with the replacement of the second seal block 121 can be reduced.

However, the specific configuration for attaching / detaching the second seal unit 120 to / from the pair of opening / closing guide shafts 101 and 102 is not limited to the above example. FIG. 10 is a diagram showing a modified example of a configuration in which the second seal unit 120 is attached to and detached from the pair of opening / closing guide shafts 101 and 102.

The opening / closing guide shafts 101 and 102 shown in FIG. 10 include large diameter portions 101a and 102a, small diameter portions 101b and 102b having a diameter smaller than that of the large diameter portions 101a and 102a, and bolt holes 101c and 102c. The small diameter portions 101b and 102b are provided at the front ends of the large diameter portions 101a and 102a. The bolt holes 101c and 102c are formed at the front ends of the small diameter portions 101b and 102b.

The second holder 123 shown in FIG. 10 includes a pair of attachment / detachment portions 141 and 142. The attachment / detachment portions 141 and 142 include through holes 141a and 142a penetrating in the front-rear direction and bolts 141b and 142b screwed into the bolt holes 101c and 102c.

The diameters of the through holes 141a and 142a are the same as or slightly larger than the diameters of the small diameter portions 101b and 102b. Further, the lengths of the through holes 141a and 142a in the front-rear direction coincide with the lengths of the small diameter portions 101b and 102b in the front-rear direction. Further, the diameter of the heads of the bolts 141b and 142b is larger than the diameter of the through holes 141a and 142a.

The second seal unit 120 shown in FIG. 10 is attached to the pair of opening / closing guide shafts 101 and 102 by the following procedure. First, the small diameter portions 101b and 102b are inserted into the through holes 141a and 142a. Next, the bolts 141b and 142b are screwed into the bolt holes 101c and 102c. As a result, the second holder 123 is sandwiched between the large diameter portions 101a and 102a and the heads of the bolts 141b and 142b in the front-rear direction.

Further, according to the above embodiment, the pair of opening / closing guide shafts 101 are in a state where the inclination of the second seal block 121 with respect to the second holder 123 is finely adjusted in advance by changing the protrusion amount of the positioning bolts 122a to 122d. , 102 can be attached to and detached from the second seal unit 120. As a result, the work load associated with the replacement of the second seal block 121 can be further reduced.

The number of positioning bolts 122a to 122d is not limited to four, and may be two or eight. Further, specific examples of the positioning member in the second seal unit 120 are not limited to the positioning bolts 122 to 122d, but are shim plates and wedges inserted between the second seal block 121 and the second holder 123. May be good.

Further, in the above embodiment, an example in which the first seal unit 110 including the first seal block 111, the base plate 112, and the positioning pins 113a and 113b is attached to and detached from the first holder 103 has been described. However, even if the first seal unit 110 including the first seal block 111, the base plate 112, the positioning pins 113a and 113b, and the first holder 103 is configured to be directly attachable to and detachable from the pair of opening / closing guide shafts 101 and 102. Good.

Similarly, in the above embodiment, the second seal unit 120 including the second seal block 121, the positioning bolts 122a to 122d, and the second holder 123 is directly attached to and detached from the pair of opening / closing guide shafts 101 and 102. Explained. However, the second seal unit 120 including the second seal block 121 and the positioning bolts 122a to 122d may be detachably configured in the second holder 123 fixed to the pair of opening / closing guide shafts 101 and 102.

Further, according to the above embodiment, a plurality of wirings extending from the seal blocks 111 and 121 can be put together in the sockets 76 and 86 and attached to and detached from the control device 60. As a result, the work load associated with the replacement of the seal blocks 111 and 121 can be further reduced. The wiring bundled in the sockets 76 and 86 is not limited to the above-mentioned example. As another example, the sockets 76 and 86 may further bundle the power line for supplying power to the spare heater, the signal line of the position sensor for detecting the position of the cutter 124, and the like.

However, the type and number of wirings bundled by the sockets 76 and 86 are not limited to the above examples. FIG. 11 is a diagram showing another example of the connection form between the seal blocks 111 and 121 and the control device 60.

Instead of the temperature sensor 73, the first seal block 111 shown in FIG. 11 includes a first temperature sensor 74 that detects the temperature of the first sealer 115 and a second temperature sensor 75 that detects the temperature of the second sealer 116. Be prepared. Further, the first socket 76 shown in FIG. 11 is from a pair of power lines L _{71 that supply power to the first heater 71, a pair of power lines L 72} that supply power to the second heater 72, and a first temperature sensor 74. The pair of signal lines L ₇₄ for extracting the detection signal and the pair of signal lines L ₇₅ for extracting the detection signal from the second temperature sensor 75 are bundled and attached to and detached from the first outlet 64.

Instead of the temperature sensor 83, the second seal block 121 shown in FIG. 11 includes a first temperature sensor 84 that detects the temperature of the first sealer 125 and a second temperature sensor 85 that detects the temperature of the second sealer 126. Be prepared. Further, the second socket 86 shown in FIG. 11 is from a pair of power lines L _{81 that supply power to the first heater 81, a pair of power lines L 82} that supply power to the second heater 82, and a first temperature sensor 84. The pair of signal lines L ₈₄ for extracting the detection signal and the pair of signal lines L ₈₅ for extracting the detection signal from the second temperature sensor 85 are bundled and attached to and detached from the second outlet 65.

Then, the control device 60 shown in FIG. 11 passes through the _{power lines L 71} and L ₈₁ so that the first sealers 115 and 125 reach a predetermined temperature based on the detection signals acquired through the _{signal lines L 74} and L _84. 1 The amount of power supplied to the heaters 71 and 81 is increased or decreased. Further, the control device 60 shown in FIG. 11 is connected _{through the power lines L 72} and L ₈₂ so that the second sealers 116 and 126 reach a predetermined temperature based on the detection signals acquired through the _{signal lines L 75} and L ₈₅ . 2 Increase or decrease the amount of power supplied to the heaters 72 and 82.

Further, the seal blocks 111 and 121 that seal the top and bottom of the bag Bp need to be replaced according to the size and shape of the bag, the material and thickness of the strip-shaped packaging material, and the like. Therefore, by providing the present invention to the seal blocks 111 and 121 that seal the top and bottom of the bag Bp as in the above embodiment, the effect of reducing the burden of replacement work becomes remarkable.

However, the present invention can be applied not only to the horizontal sealing device 50 but also to the vertical sealing device 40. Further, in the present invention, not only the vertical bag-making filling and packaging machine 1 that molds the strip-shaped film Fw that is fed in the vertical direction by the feeding device 20 into a bag, but also the strip-shaped film Fw that is fed in the horizontal direction by the feeding device is molded into the bag. It can also be applied to horizontal bag-making filling and packaging machines.

1 ... Vertical bag-making filling and packaging machine, 10 ... Film transfer device, 11 ... Winding roll, 12a to 12h ... Fixed guide roll, 13 ... Tension mechanism, 14 ... Tube making device, 15 ... Date printing device, 16 ... Date Inspection device, 20 ... Feed device, 21,22 ... Feed belt, 30 ... Product filling cylinder, 40 ... Vertical seal device, 41, 42 ... Seal block, 50 ... Horizontal seal device, 51, 52 ... Lifting guide shaft, 53, 54 ... Elevating block, 60 ... Control device, 61 ... CPU, 62 ... ROM, 63 ... RAM, 64 ... 1st outlet, 65 ... 2nd outlet, 71,81 ... 1st heater, 72,82 ... 2nd heater, 73, 83 ... temperature sensor, 74, 84 ... first temperature sensor, 75, 85 ... second temperature sensor, 76 ... first socket, 86 ... second socket, 100 ... opening / closing unit, 101, 102 ... opening / closing guide shaft, 103 ... 1st holder, 104a, 104b, 112a, 112b ... Bolt holes, 105a, 105b ... Positioning recesses, 106a, 106b ... Recesses, 107 ... Rear end block, 110 ... 1st seal unit, 111 ... 1st seal block, 112 ... Base plate, 113a, 113b ... Positioning pin, 115, 125 ... First sealer, 115a, 116a, 125a, 126a ... Convex, 115b, 116b, 125b, 125b ... Concave, 116, 126 ... Second sealer 117 , 127 ... Groove, 120 ... Second seal unit, 121 ... Second seal block, 122a to 122d ... Positioning bolt, 123 ... Second holder, 124 ... Cutter, 129a, 129b, 141, 142 ... Detachable part, 129a1, 129b1 ... 1st arc portion, 129a2, 129b2 ... 2nd arc portion, 130 ... Separation mechanism, 131 ... Motor, 132 ... Toggle mechanism, 133 ... 1st arm, 134 ... 2nd arm, 101a, 102a ... Large diameter portion, 101b, 102b ... Small diameter part, 101c, 102c ... Bolt hole, 141a, 142a ... Through hole, 141b, 142b ... Bolt

The present invention is a bag-making filling and packaging machine that fills a bag formed from a strip-shaped packaging material with a product in order to solve the above-mentioned problems. It is provided with a sealing device that sandwiches and seals the overlapped portion, and a product filling cylinder that fills a bag formed from a strip-shaped packaging material by being sealed by the sealing device with a product supplied from the product supply device. The sealing device includes a pair of shafts extending in a direction orthogonal to the feeding direction of the strip-shaped packaging material, a first sealing block in which ridges and dents are alternately formed on the contact surface, and the first seal. A first seal unit having a first positioning member for positioning the block on the pair of shafts and detachable from the pair of shafts, and a second seal block having ridges and dents alternately formed on the contact surface. A second positioning member for positioning the second seal block is provided at a position where the protrusions and recesses mesh with each other when the contact surfaces of the first and second seal blocks come into contact with each other. A second seal unit that can be attached to and detached from the pair of shafts on the opposite side of the feed path from the first seal unit, and the first and second seal blocks are attached along the extending direction of the pair of shafts. and having a separation mechanism causing contact and separation.

The vertical sealing device 40 includes a pair of sealing blocks 41 and 42 arranged so as to sandwich the overlapped ends of the strip-shaped films Fw. The pair of seal blocks 41, 42 are brought into contact with each other by transmitting the rotation of the motor (not shown). A heater is built in each of the pair of seal blocks 41 and 42. Then, the pair of seal blocks 41, 42 weld (seal) both ends in the width direction by sandwiching and heating the overlapped ends of the strip-shaped film Fw. As a result, the strip-shaped film Fw is formed into a tubular shape.

The opening / closing unit 100 plays a role of sealing the portion corresponding to the bottom of the bag Bp and the portion corresponding to the top of the bag Bp by bringing the first seal block 111 and the second seal block 121 into contact with each other. The opening / closing unit 100 is arranged between the pair of elevating guide shafts 51 and 52. The opening / closing unit 100 mainly includes a pair of opening / closing guide shafts (shafts) 101 and 102, a first seal unit 110, a second seal unit 120, and a contact / detachment mechanism 130.

As shown in FIG. 3, the contact / detachment mechanism 130 moves the first seal unit 110 and the second seal unit 120 in the approaching direction and the separating direction, thereby causing the first seal block 111 and the second seal block 121. contact and separation causes the contact surface of. As shown in FIG. 3, the contact / detachment mechanism 130 mainly includes a motor 131 and a toggle mechanism 132.

1 ... Vertical bag-making filling and packaging machine, 10 ... Film transfer device, 11 ... Winding roll, 12a to 12h ... Fixed guide roll, 13 ... Tension mechanism, 14 ... Tube making device, 15 ... Date printing device, 16 ... Date Inspection device, 20 ... Feed device, 21,22 ... Feed belt, 30 ... Product filling cylinder, 40 ... Vertical seal device, 41, 42 ... Seal block, 50 ... Horizontal seal device, 51, 52 ... Lifting guide shaft, 53, 54 ... Elevating block, 60 ... Control device, 61 ... CPU, 62 ... ROM, 63 ... RAM, 64 ... 1st outlet, 65 ... 2nd outlet, 71,81 ... 1st heater, 72,82 ... 2nd heater, 73, 83 ... temperature sensor, 74, 84 ... first temperature sensor, 75, 85 ... second temperature sensor, 76 ... first socket, 86 ... second socket, 100 ... opening / closing unit, 101, 102 ... opening / closing guide shaft, 103 ... 1st holder, 104a, 104b, 112a, 112b ... Bolt holes, 105a, 105b ... Positioning recesses, 106a, 106b ... Recesses, 107 ... Rear end block, 110 ... 1st seal unit, 111 ... 1st seal block, 112 ... Base plate, 113a, 113b ... Positioning pin, 115, 125 ... First sealer, 115a, 116a, 125a, 126a ... Convex, 115b, 116b, 125b, 125b ... Concave, 116, 126 ... Second sealer 117 , 127 ... Groove, 120 ... Second seal unit, 121 ... Second seal block, 122a to 122d ... Positioning bolt, 123 ... Second holder, 124 ... Cutter, 129a, 129b, 141, 142 ... Detachable part, 129a1, 129b1 ... first arcuate portion, 129A2,129b2 ... second arc portion, 130 ... moving mechanism, 131 ... motor, 132 ... toggle mechanism, 133 ... first arm, 134 ... second arms, 101a, 102a ... large diameter section, 101b, 102b ... Small diameter part, 101c, 102c ... Bolt hole, 141a, 142a ... Through hole, 141b, 142b ... Bolt

Claims (9)

A bag-making filling and packaging machine that fills products into bags molded from strip-shaped packaging materials.
A feeding device that feeds the strip-shaped packaging material along the feeding path,
A sealing device that sandwiches and seals the overlapped parts of the strip-shaped packaging material,
A bag formed from a strip-shaped packaging material by being sealed by the sealing device is provided with a product filling cylinder for filling a product supplied from the product supply device.
The sealing device is
A pair of shafts extending in a direction orthogonal to the feeding direction of the strip-shaped packaging material,
It has a first seal block in which ridges and dents are alternately formed on the contact surface, and a first positioning member for positioning the first seal block on the pair of shafts, and is removable from the pair of shafts. 1st seal unit and
A second seal block in which ridges and dents are alternately formed on the contact surface, and a position where the ridges and dents mesh with each other when the contact surfaces of the first and second seal blocks abut. A second seal unit that has a second positioning member for positioning the second seal block and can be attached to and detached from the pair of shafts on the opposite side of the feed path from the first seal unit.
A bag-making filling and packaging machine characterized by having a separating mechanism for separating the first and second seal blocks along the extending direction of the pair of shafts. In the bag-making filling and packaging machine according to claim 1,
The sealing device has a first holder attached to the pair of shafts so as to be movable along the pair of shafts in a direction that separates the second sealing unit.
The first seal unit has a base plate fixed to the back surface opposite to the contact surface of the first seal block, and the base plate is bolted to the first holder to be attached to the pair of shafts. A bag-making filling and packaging machine characterized by being indirectly attached and detached. In the bag-making filling and packaging machine according to claim 2.
The first positioning member is a plurality of positioning pins protruding from the base plate toward the side opposite to the first seal block.
The first holder has a plurality of positioning recesses for receiving the positioning pin.
A bag-making filling and packaging machine, wherein each of the base plate and the first holder is formed with bolt holes that communicate with each other when the plurality of positioning pins are inserted into the corresponding positioning recesses. In the bag-making filling and packaging machine according to any one of claims 1 to 3,
The second seal unit has a second holder that is attached to the second seal block with the second positioning member interposed therebetween.
The second holder is a bag-making filling / packaging machine characterized by having a pair of attachment / detachment portions attached to / detached from each of the pair of shafts. In the bag-making filling and packaging machine according to claim 4.
The pair of shafts extend horizontally and
Each of the pair of detachable parts
A first arc portion that covers the shaft from above and
A bag-making filling and packaging machine characterized in that the shaft is sandwiched between a second arc portion that covers the shaft from below and is detachable from the first arc portion. In the bag-making filling and packaging machine according to claim 4 or 5.
The second positioning member is
It is screwed into a bolt hole provided in one of the back surface of the second seal block opposite to the contact surface and the facing surface of the second holder facing the back surface of the second seal block, and is screwed into the other. Multiple positioning bolts that the head contacts
A bag-making filling / packaging machine characterized in that the inclination of the second seal block with respect to the facing surface is adjusted by changing the protrusion amount of each of the plurality of positioning bolts. In the bag-making filling and packaging machine according to any one of claims 1 to 6,
The first seal block is
A heater that heats the first seal block and
A temperature sensor that detects the temperature of the first seal block and outputs a detection signal,
It has a power line for supplying electric power to the heater and a socket for bundling a signal line for extracting the detection signal from the temperature sensor and attaching / detaching the detection signal to / from the control device.
The bag-making filling is characterized in that the control device increases or decreases the amount of power supplied through the power line so that the first seal block reaches a predetermined temperature based on the detection signal acquired through the signal line. Packaging machine. In the bag-making filling and packaging machine according to any one of claims 1 to 7.
Each of the first and second seal blocks is a strip-shaped packaging material formed into a tubular shape.
The first sealer that seals the part corresponding to the top of the first bag,
A bag-making filling and packaging machine having a second sealer that seals a portion corresponding to the bottom of the second bag immediately after the first bag. In the bag-making filling and packaging machine according to claim 8.
A groove is formed between the first sealer and the second sealer in each of the first and second seal blocks.
The second seal block has a cutter that appears and disappears from the groove and cuts a strip-shaped packaging material formed into a tubular shape at the boundary between the first bag and the second bag.
The second positioning member is characterized in that the second seal block is positioned at a position where the grooves communicate with each other when the contact surfaces of the first and second seal blocks come into contact with each other. Filling and packaging machine.

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