JP2735982B2 - Bag opening holding device in bag packing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is an accommodation was taken from there by expanding the mouth of the packaging bag, in the bag-filling packaging machine, such as for vegetables and fruits to discharge sealed its mouth, its bag of The present invention relates to an opening holding device.

[0002]

BACKGROUND OF INVENTION Problems to be Solved] In a conventional bag-filling packaging machine, for example, JP 59-17441
There is one shown in Japanese Patent Publication No.

[0003] In this packaging machine, both sides of the mouth of the bag are supported by a pair of a first gripping member and a second gripping member, respectively. It is supposed to be. The distance between the pair of first gripping members and the distance between the pair of second gripping members can be changed.

[0004] However, such a bag opening holding device has a drawback that it is difficult to cope with a change in the shape, size, or amount of the stored item, since the opening size of the mouth portion is constant and the opening can be made only in a square shape. Was.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bag opening holding device which makes it easy to change the shape of the opening of the mouth of the bag and to cope with a change in the contents.

[0007]

As shown in FIGS. 1, 9 to 16, and 34 to 37 in the drawings of the embodiments described later, in the bag opening holding device 131 of the bag packing machine according to the present invention, A pair of first expanding members 105 and 106 and a second expanding member 14 which are respectively inserted into and removed from the inside of the mouth 301 on one of two opposing sides of the mouth 301 of the bag 300.
3 and 143, and a pair of third expanding members 147 and 148 and fourth expanding members 147 and 148 respectively inserted into and removed from the mouth 301 on the other opposite side. The first expanding members 105 and 106 and the second expanding members 143 and 14
3 is provided so as to be able to approach and separate from each other in a direction 301a between one both sides of the mouth portion 301. The third expanding members 147, 148 and the fourth expanding members 147, 148 are provided so as to be able to approach and separate from each other in a direction 301b between the other two sides of the mouth portion 301. A pair of first expanding members 10
5 and 106 and the pair of second expanding members 143 and 143 are provided so as to be able to approach and separate from each other in a direction 301 b between the other two sides of the mouth portion 301. A pair of third expanding members 147, 148 and a pair of fourth expanding members 147, 1
48 is a direction 3 between both sides of one of the mouth portions 301;
01a are provided so as to be able to approach and separate from each other.

[0008] More specifically, the present invention is configured, for example, as follows. The pair of first expanding members 105 and 106 cannot move in the direction 301 a between one side of the mouth portion 301. The pair of second expanding members 143 and 143
Is moved in the direction 301a between both sides of the first expanding member 105, 106 so as to approach and separate from the pair of first expanding members 105 and 106. The pair of first expanding members 105 and 106 and the pair of second expanding members 143 and 143 can move toward and away from each other in the direction 301b between the other two sides of the mouth portion 301, respectively. The pair of third expanding members 147, 148 and the pair of fourth expanding members 147, 148 move together in the direction 301b between the other two sides of the opening 301 and can approach and separate from each other. Among the expanding members 147 and 148, the third and fourth expanding members 14 close to the first expanding members 105 and 106 are provided.
8, 148 are directions 301b between one side of the mouth 301.
Unable to move to The third and fourth expanding members 147, 147 near the second expanding members 143, 143 move in the direction 301b between one side of the mouth 301, and the third and fourth expanding members 147, 147 near the first expanding members 105, 106. Third and fourth expanding members 148,
148 can be approached or separated.

[0009]

[0010]

[0011]

[0012]

[0013]

The opening 301 is formed by the first expanding members 105 and 106 .
The bag 300 is transferred to the bag opening holding device 131 while being opened.

As shown in FIG. 36, the second expanding member 143 and the third and fourth expanding portions are inserted into the mouth portion 301 of the bag 300.
Material 147 and 148 is inserted, the mouth portion 30 1 by their
Is further opened . Their to, as shown in FIG. 37, contained goods from the mouth 301 into the bag 300 of this is placed. Next, the second, third, and fourth expanding members 143, 147, and 148 are removed from the opening 301, and the opening 301 is moved to the first expanding member 105,
The bag 300 is held by only 106 and the bag 300 is transferred to the next step.

In the next step, the opening 301 is pulled out of the first expanding members 105 and 106.

In particular, the second, third, and fourth expanding members 143 , 14
The mouth portion 301 is opened in a substantially octagonal shape by 7,148 and the first expanding members 105,106. Then, when they are moved and adjusted, the octagonal shape can be arbitrarily adjusted according to the size and shape of the stored object.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a horizontal bag packing machine according to an embodiment of the present invention.

As shown in FIG. 1, this horizontal bag-filling and packaging machine is roughly divided into a bag supply device A, a stored material supply device B, and a bag mouth binding device C. The bag supply device A is further divided into a bag storage device 1, a bag removal device 34, a bag vertical opening device 51, a bag delivery device 64, a bag lateral opening device 71, and a bag transport device 84. The contents supply device B further includes a bag conveying device 8.
4, a bag vertical opening device 123, a bag opening holding device 131, a bag delivery device 156, and an article pushing device 163.
The bag mouth binding device C further includes a placement conveyor 86 of the bag conveying device 84, a bag mouth holding / transferring device 196, and a bag mouth pulling device 2.
19, bag mouth twisting device 232 and bag mouth tape attaching device 24
8

First, each of the above devices 1, 34, 51, 6
4,71,84,123,131,156,163,1
After the components 96, 219, 232, and 248 are divided, their operation will be described collectively.

(Regarding Bag Storage Device 1) First, the bag storage device 1 will be described with reference to FIGS. A pair of front and rear struts 3 are erected on the underframe 2, and a strut 4 is attached between the two struts 3. A pair of front and rear bearing plates 5 are provided on the support plate 4.
A pair of left and right support shafts 6 are rotatably supported between the two bearing plates 5. A pair of front and rear bearing plates 7 are mounted on the underframe 2, and a central drive shaft 8 and a pair of left and right support shafts 9 are rotatably supported between the two bearing plates 7. A pair of front and rear winding drums 10 are attached to the drive shaft 8 so as to be integrally rotatable.
One end 11a is connected. An electric motor 12 is installed on the underframe 2, and a chain 15 is wound around a sprocket 13 on an output shaft 12 a and a sprocket 14 on a drive shaft 8.

Each of the belts 11 is wound around each of the support shafts 9 and 6, and the other end 11 b of each of the belts 11 is connected to a suspension frame 16. On this suspension frame 16, a pair of front and rear vertical plates 1 is provided.
The push-up plate 18 is attached between the two vertical plates 17. Positioning pins 19 are protrudingly provided on the center of both front and rear ends of the push-up plate 18.

The output shaft 12 of the electric motor 12
When a rotates, the rotation is transmitted to both winding drums 10 via the sprocket 13, the chain 15, the sprocket 14, and the drive shaft 8. When both winding drums 10 rotate, one end 11a side of each belt 11 is wound on both winding drums 10 or unwound from both winding drums 10, so that the suspension frame 16 moves up and down via each belt 11, The push-up plate 18 also moves up and down.

A mounting table 21 is supported movably in the left-right direction along guide rails 20 attached to both front and rear sides of the underframe 2. An electric motor 22 is mounted on the underframe 2, and a chain 25 is stretched between a sprocket 23 on the output shaft 22 a and a sprocket 24 on the underframe 2. The mounting table 21 is connected to the chain 25 by left and right mounting portions 26. A pair of left and right mounting frames 27 is provided on the mounting table 21, and positioning pins 28 are protrudingly provided at the center of both front and rear ends of the mounting frames 27.

The pair of left and right storage cases 29 includes a bottom plate 30 and left and right side plates 31. The distance between the both side plates 31 is adjusted by moving the both side plates 31 in the left and right direction with respect to the bottom plate 30. A pair of positioning holes 32 and 33 are formed at the center of both the front and rear ends of the bottom plate 30, respectively. The left and right bag storage cases 29 are the left and right mounting frame portions 27 of the mounting table 21.
The two positioning pins 28 of each mounting frame 27 are inserted into both positioning holes 32 of the bottom plate 30 of each bag storage case 29, and each bag storage case 29 is positioned on each mounting frame 27. ing.

The rotation of the output shaft 22 a of the electric motor 22 causes the rotation of the chain 25, causing the mounting table 21 to move in the left-right direction, and of the bag storage cases 29 on both mounting frames 27 of the mounting table 21. One is located above the push-up plate 18.

As described above, when the push-up plate 18 moves upward, the positioning pins 19 of the push-up plate 18 are inserted into the positioning holes 33 of the bottom plate 30 of the bag storage case 29, and the bottom plate 3
0 is placed on the push-up plate 18 and moves upward together with the push-up plate 18.

(Regarding Bag Extracting Apparatus 34) Next, an apparatus 34 for extracting the bag 300 from the bag storage case 29 of the bag storing apparatus 1 will be described mainly with reference to FIGS. 1, 5 and 6 and FIGS. explain.

Rotating shafts 37, 38, 39 are respectively installed on the front and rear portions between the left and right machine frames 35, 36 and the intermediate portion thereof, and male screw portions 37a having opposite screw relations are formed on both left and right sides thereof. , 38a, 39a, 37b,
38b and 39b are formed. Male thread 3 on left side
7a, 38a, 39a and each right-hand male thread portion 37b,
38b and 39b have female screw members 40a and 41, respectively.
a, 42a, 40b, 41b, 42b are screwed together, and guide rails 43a, 43b are respectively connected between the left female screw members 40a, 41a, 42a and between the right female screw members 40b, 41b, 42b. .

A bracket 44 is attached to the left and right female screw members 40a and 40b on the front rotation shaft 37, and a movable plate 45 is supported on the bracket 44 so as to be vertically movable. A suction part 46 is attached to the lower end of the movable plate 45. A suction surface 46 below the suction portion 46
In FIG. 5A, ridges 47 are formed downward at both front and rear ends, and a recess 48 is formed between the ridges 47.
An air cylinder 49 is mounted on the bracket 44, and its piston rod 49 a is connected to the movable plate 45. When the piston rod 49a moves up and down, the suction section 46 moves up and down via the movable plate 45.

Left and right bag storage cases 2 of the bag storage device 1
9, the bag extracting device 34 is located above one bag storage case 29 above the push-up plate 18. A large number of bags 300 are stacked in the bag storage case 29, and the mouth portions 301 are located below the left and right suction portions 46. Then, as the piston rod 49a moves up and down,
The left and right suction portions 46 reciprocate between an uppermost movement position and a lowermost movement position. The electric motor 12 is operated by the electric motor 12 such that the mouth 301 of the uppermost bag 300 is always moved up to the lowermost position of the suction units 46 among the many bags 300 loaded in the bag storage case 29. Is controlled in accordance with the number of sheets.

The rotating shafts 37, 38 and 39 are linked by a chain 50. When the chain 50 rotates, the male screw portions 37a of the respective rotating shafts 37, 38, 39,
Female thread members 40a, 40b, 41a, 41b, 42 screwed to 37b, 38a, 38b, 39a, 39b.
a and 42b approach or separate from the transport center Q of the bag 300 by an equal distance in the axial direction, and along with the movement, the left and right guide rails 43a and 43b and the entire left and right bag unloading devices 34 approach or separate from each other. It has become.

(Regarding Bag Vertical Opening Device 51) Next, FIG. 1 and FIG. 7 show a bag vertical opening device 51 which is located at a position away from the bag unloading device 34 by a predetermined distance to the conveying side of the bag 300.
8 and FIGS. 5 and 6.

A pair of upper and lower rotary shafts 52, 53 are provided between the left and right machine frames 35, 36, and male screw portions 52a, 53a having a reverse screw relationship to each other are formed on both left and right sides thereof. Female screw members 54a, 55a are screwed into the male screw portions 52a, 53a, respectively. An electric motor 56 is attached to the right machine frame 36, and its output shaft 56a
Is transmitted to the upper rotation shaft 52. The rotation of the upper rotating shaft 52 is transmitted to the chain 50 in the left machine frame 35, and the lower rotating shaft 53 and the rotating shafts 37, 38,
39.

A movable plate 57 is vertically movably supported by the upper left and right female screw members 54a. The two movable plates 57 are connected by a connecting plate 57a.
Together with the connecting plate 57a. An upper suction part 58 is attached to lower ends of the left and right movable plates 57.

An air cylinder 59 is mounted on the right machine frame 36, and its piston rod 59a is connected to the connecting plate 57a via a lever 60 and a link 61.
Then, the lever 60 is rotated by the piston rod 59a, and the left and right movable plates 57 are vertically moved via the link 61 and the connecting plate 57a. A suction portion 62 is attached to the lower left and right female screw members 55 a, and a guide plate 63 extends from the both suction portions 62 toward the bag extracting device 34.

As described above, when the left and right movable plates 57 move up and down, the upper and lower left and right suction units 58 move up and down so that their suction surfaces 58a come into contact with and separate from the suction surfaces 62a of the lower left and right suction units 62. It is supposed to.

When the upper and lower rotary shafts 52 and 53 rotate, the upper and lower female screw members 54a and 55a screwed to the male screw portions 52a and 53a are moved in the axial direction by the same distance from the transport center Q of the bag 300. With the movement, the left and right movable plates 57 and the upper and lower left and right suction units 58 and 62 are moved.
Etc. are arranged to approach or separate from each other. (About the bag delivery device 64) Next, the bag removal device 34
Bag transfer device 6 that reciprocates between the bag and the bag vertical opening device 51
4 will be described mainly with reference to FIGS. 1, 5 and 6 and FIGS.

A left and right moving body 65 is movably supported along the right and left guide rails 43a and 43b, and an upper holding portion 66 is provided at a lower end thereof. Below the upper clamping portion 66, a lower clamping portion 67 is formed by a parallel crank mechanism 68.
Supported by An air cylinder 69 is attached to both moving bodies 65, and a lower holding portion 67 is moved up and down by a piston rod 69a via a parallel crank mechanism 68.
The upper holding portion 66 comes into contact with and separates from the upper holding portion 66. A rod 70 is connected to upper portions of the left and right moving bodies 65. Since both rods 70 move along both guide rails 43a and 43b as described later, the entire left and right bag delivery devices 64 reciprocate between the bag removal device 34 and the bag vertical opening device 51.

(About the lateral bag opening device 71) Next, the lateral bag opening device 71 for receiving the bag 300 from the vertical bag opening device 51 will be described mainly with reference to FIGS. 1, 7, 8 and FIGS. explain.

Left and right upper plates 72 are movably supported along left and right guide rails 43a and 43b extending rearward from the bag vertical opening device 51, and left and right lower plates 73 are parallel to the upper plates 72. It is supported by a crank mechanism 74. An air cylinder 75 is attached to both upper plates 72, and the lower plate 73 is moved up and down by a piston rod 75 a via a parallel crank mechanism 74 so as to approach or separate from the upper plate 72. The left and right lower plates 73 have an expanding arm 7
6 are supported by a parallel crank mechanism 77, and the left and right expanding arms 76 project toward the bag longitudinal opening device 51. An air cylinder 78 is mounted on the left and right lower plates 73, and the left and right expanding arms 76 are
Opens and closes in the left-right direction. By the opening and closing, the left and right expanding arms 76 can be in a state of closing each other on the transport center Q of the bag 300 and a state of opening each other at the same distance from the transport center Q.

On the left and right upper plates 72, vertical plates 79 are erected.
A rod 70 connected on the upper side 5 is connected to the left and right vertical plates 79. The rotating belts 81 and 82 are wound between the pulleys 80 inside the left and right machine frames 35 and 36, respectively, and are rotated in conjunction with each other. A movable rod 83 is bridged between the two rotating belts 81 and 82, and the left and right upper plates 72 are movably supported along the movable rod 83. When the movable rod 83 moves in the front-rear direction together with the left and right rotating belts 81 and 82, the entirety of the bag lateral opening device 71 moves along the left and right guide rails 43a and 43b. It reciprocates between the bag delivery position P to the process.

The bag lateral opening device 71 and the bag delivery device 6
4 is connected by the rod 70 as described above, and thus reciprocates integrally along the left and right guide rails 43a and 43b. Therefore, when the bag lateral opening device 71 is located at the bag vertical opening device 51, the bag delivery device 64 is located at the bag unloading device 34. When the bag lateral opening device 71 is at the bag delivery position P for the next process, the bag delivery device 64 is located at the bag vertical opening device 51. (About the bag transporting device 84) Next, the bag lateral opening device 7
When the bag 1 is at the bag delivery position P, the bag conveying device 84 that receives the bag 300 from the device 71 and conveys the bag 300 to the container supply device B and the bag opening unit C is shown in FIGS. 1 and 9 to 12 and 7. , 8 will be mainly described. The device 84 comprises a transport chain device 85 and a loading conveyor 86 arranged side by side.

First, the transport chain device 85 will be described. Below the bag lateral opening device 71, both front and rear machine frames 8
A pair of driven sprockets 90 and 91 are rotatably supported on a support shaft 89 provided between 7, 88. Each of the driven sprockets 90 and 91 has a chain 9
The chains 92 and 93 are extended in parallel to each other in a direction orthogonal to the bag transport center Q of the bag supply device A, and are wound around a pair of drive sprockets 94 and 95. . These two drive sprockets 94, 9
5 is supported on a drive shaft 96 between the front and rear machine frames 87 and 88 via a differential gear mechanism 97.

In this differential gear mechanism 97, an external gear 98 is rotatably supported on a drive shaft 96, and a drive sprocket 95 and a bevel gear 99 are rotatably supported on the external gear 98 and the drive shaft 96. ing. Three shafts 100 supported at equal intervals in the circumferential direction of the bevel gear 99
The planetary gears 101 are rotatably supported, and each of the planetary gears 101 is meshed with the external gear 98 and the internal gear 10 in the drive sprockets 94 and 95.
2 is engaged. The electric motor 103 is attached to the front machine frame 87, and the bevel gear 104 on the output shaft 103a is meshed with the two bevel gears 99.

A pair of both gripping bodies 105 and 106 are arranged on the two chains 92 and 93 at equal intervals. One of the grippers 10 of the two grippers 105 and 106
5 is attached to one chain 92, and the other gripper 106 is attached to the other chain 93. The two grippers 105 and 106 are the chains 9
The lower holding piece 107 is attached to the upper and lower holding pieces 109, and the upper holding piece 109 is supported on the lower holding piece 107 so as to be rotatable up and down around a shaft 108. The pieces 109 and 107 are biased by a spring (not shown) to close each other. When the output shaft 103a of the electric motor 103 rotates, the differential gear mechanism 9 rotates.
7, the two driving sprockets 94 and 95 rotate differentially, so that the two grippers 105 and 106 approach or separate from the center of grip between the two grippers 105 and 106 by the same distance from each other. ing.

In the vicinity of both driven sprockets 90 and 91 and in the vicinity of both driving sprockets 94 and 95, a pair of air cylinders 110 and 112 are connected to both front and rear machine frames 87 and 8 respectively.
8 and their piston rods 110
Pressing plates 111 and 113 are attached to the a and 112a. A holding portion 109a extends downward on the upper holding piece 109 of the two gripping bodies 105 and 106 of each set. And these piston rods 110a, 112
When the holding plates 111 and 113 press the holding portion 109a by a, the upper holding piece 109 rotates in each of the gripping bodies 105 and 106 to open with respect to the lower holding piece 107.

Next, the loading conveyor 86 extending in parallel along the transport chain device 85 will be described.
A flat belt 114 is stretched horizontally between the pulleys 115 and 116 below the bag vertical opening device 51 and the bag horizontal opening device 71. , 93 along the rotation direction. This flat belt 114
Protrudes outward from the right machine frame 36 of the bag feeding device A.

Following the flat belt 114, the flat belt 1
17 is stretched between the pulleys 118 and 119, and is inclined downward as the distance from the chains 92 and 93 increases. The flat belt 117 extends further to the right than the two driving sprockets 94 and 95 of the transport chain device 85. Inside the flat belt 117, the diaphragm 120
Is supported, and the vibration plate 120 is vibrated by the pair of air cylinders 121 so that the flat belt 117 also vibrates.

The guide rod 122 is supported on the flat belt 117 so that the guide rod 122 can be moved and adjusted in a direction perpendicular to the rotation direction of the flat belt 117. (Regarding the bag vertical opening device 123) Next, the bag 30 is held between the bag mouth grippers 105 and 106 of the transport chain device 85.
The vertical opening device 123 for opening 0 will be described mainly with reference to FIGS. 1 and 13 to 16.

A movable plate 124 is vertically movably supported by a bracket 125 on the right side machine frame 36 adjacent to the flat belt 114 of the loading conveyor 86 protruding from the right side machine frame 36 of the bag feeding apparatus A. A suction part 126 is attached to the lower end of the movable plate 124. An electric motor 127 is attached to the bracket 125, and a pulley 128 on the output shaft 127 a thereof and both pulleys 129 on the bracket 125 are provided.
Is wound around the belt 130. This belt 13
0 is fixed to the upper end of the movable plate 124,
The lower end 130b is fixed to the lower end of the movable plate 124. Then, when the output shaft 127a of the electric motor 127 rotates, the belt 130 is sent up and down by the pulley 128, and the suction unit 126 moves up and down together with the movable plate 124. (Regarding Bag Opening Holding Apparatus 131) Next, an apparatus 131 for adjusting the opening shape of the bag 300 to supply the contents to the bag 300 will be described mainly with reference to FIGS. 1 and 13 to 16.

A rotating shaft 133 is attached to a bracket 132 attached to the rear machine frame 88 above the transport chain device 85.
Are supported in a horizontal state, and male screw portions 133a and 133b having a reverse screw relationship with each other are formed on both left and right sides. A female screw member 134 is screwed into the male screw portions 133a and 133b, and the both female screw members 134 are supported by a horizontal guide rod 135. This bracket 13
Rotation shafts 136 are vertically supported on both left and right sides of 2,
Male screw portions 136a are formed on both rotation shafts 136.
A female screw member 137 is screwed into these male screw portions 136a.
8 supported.

A vertical movable shaft 139 is rotatably supported by the female screw members 134 and extends downward. The lower ends of the movable shafts 139 are rotatably inserted into the interlocking body 140. ing. A horizontal movable shaft 141 is rotatably supported between the female screw members 137.
Is rotatably inserted into the both interlocking members 140 between the two female screw members 137. The two linked bodies 140 can move along the axes of the vertical movable shaft 139 and the horizontal movable shaft 141.

Both interlocking members 140 are provided between the two vertical movable shafts 139.
A pair of left and right sliding cylinders 142 are inserted into the inside so as to be able to rotate integrally with the movable shaft 141.
It can move in the axial direction of the movable shaft 141 together with 0. Vertically expanding claws 143 are attached to the two sliding cylinders 142.

The horizontal movable shaft 1 in both interlocking bodies 140
41, a gear 144 is inserted so as to be integrally rotatable, and a gear 145 is inserted into both vertically movable shafts 139 so as to be integrally rotatable.
The movable shafts 139 and 141 can be moved together with the movable shafts in the axial direction. The two gears 144 on the horizontal movable shaft 141 and the gear 145 on the vertical movable shaft 139 are meshed with each other, and the rotation of the horizontal movable shaft 141 causes the vertical movable shaft 139 to rotate through the two gears 144 and 145. It is transmitted to. A sliding cylinder 146 is rotatably inserted into the two movable shafts 139 so as to be integrally rotatable in the both interlocking bodies 140, and the sliding cylinder 146 can move in the axial direction of the vertical movable shaft 139 together with the interlocking body 140. ing. An upper horizontal expanding claw 147 is attached to both sliding cylinders 146. At the lower ends of the two vertical movable shafts 139, lower horizontal expanding claws 148 are attached so as to be integrally rotatable.

On the bracket 132, both electric motors 149 and 150 are mounted. The rotation of the output shaft 149a of one electric motor 149 is transmitted to the horizontal rotation shaft 133 via a chain 151. The rotation of the output shaft 150 a of the other electric motor 150 is transmitted to the both vertical rotation shafts 136 via the chain 152.

An air cylinder 154 is attached to an attachment plate 153 attached to one of the left and right internal thread members 137, and the piston rod
4a is connected to the horizontal movable shaft 141 via a lever 155.

The horizontal rotating shaft 133 is electrically driven.
When rotated by the tab 149, the two female screw members 134 approach or separate in the horizontal direction by the same distance from the bag opening center R on the both male screw portions 133a and 133b of the rotating shaft 133,
With this movement, both vertical movable shafts 139 also move, and both interlocking bodies 140 move along the horizontal movable shaft 141. Therefore, the lower horizontal expanding claw 148 at the lower end of both vertical movable shafts 139, the vertical expanding claw 143 and the upper horizontal expanding claw 147 within both interlocking bodies 140 are positioned at the center R of the bag opening. Approach or move away from each other by a distance.

The two rotating shafts 136 are perpendicular to the electric motor 150.
, The male screw portion 136 of the rotating shaft 136
Both female screw members 137 move in the axial direction of the rotation shaft 136 along the line a, and with the movement, both the interlocking members 140 move up and down along with the horizontal movable shaft 141. Therefore, the vertical expanding claw 143 in the both interlocking bodies 140 and the upper horizontal expanding claw 14
3, and the air cylinder 154 on the horizontal movable shaft 141 moves up and down.

When the horizontal movable shaft 141 is rotated by a certain angle by the air cylinder 154, the vertically expanding pawl 143 on the horizontal movable shaft 141 is rotated vertically, and the vertical movable shaft 139 is rotated vertically. The horizontal expanding claws 147 and 148 rotate in the horizontal direction. (Regarding Bag Delivery Device 156) Next, a device 156 for delivering the bag 300 from the bag vertical opening device 123 to the bag opening holding device 131 will be described mainly with reference to FIG. 1 and FIGS.

In the bag opening holding device 131, a horizontal rail 157 is attached between female screw members 137 on both vertical movable shafts 139. A movable plate 158 is supported movably in the horizontal direction along the rail 157, and a suction unit 159 is attached to a lower side of the movable plate 158.
A vertical rail 160 is attached to the horizontal movable plate 158, and a vertical movable plate 161 is movably supported along the rail 160. The movable plate 161 is connected to an interlocking rod 162 that reciprocates in the horizontal direction.

When the interlocking rod 162 reciprocates, the horizontal movable plate 158 moves along the horizontal rail 157, and the suction unit 159 is connected to the suction unit 1 of the bag vertical opening device 123.
26 and the bag opening center R of the bag opening holding device 131.
It is possible to take a position to stop at. Next, the device 163 for pushing the contents into the bag 300 will be described mainly with reference to FIGS. 1 and 17 to 19.

A movable base 166 is mounted on both front and rear horizontal rails 165 of the machine base 164 connected to the rear machine frame 88 behind the bag opening holding device 131 by a drive lever 166a and a link 166b. It can be moved in the left-right direction along each of the 85 chains 92, 93.

A horizontal rail 168 is provided between a mounting plate 167 erected on the rear end side of the movable base 166 and the machine frame 88 on the rear side, and the movable plate 169 moves in the front-rear direction along the rail 168. Supported as possible. A movable rod 170 is supported by the movable plate 169 so as to be movable in the vertical direction. An upper guide plate 172 is attached to a base plate 171 attached to a lower end portion of the movable rod 170, and a rear machine frame 88 is provided. It extends horizontally toward.

An electric motor 173 is mounted on the mounting plate 167, and a belt 176 is provided between a pulley 174 on its output shaft 173a and a pulley 175 on a rear machine frame 88.
Is wrapped horizontally. The movable plate 169 is attached to the belt 176. An electric motor 177 is mounted on the movable plate 169, and a belt 179 is wound around a pulley 178 on an output shaft 177a.
The upper end 179a of the belt 179 is attached to the upper end of the movable rod 170 via a pulley 180 on the movable plate 169,
The lower end 179b is connected to the movable rod 17 via the pulley 180.
0 is attached to the lower end.

A lower guide plate 181 is supported on the movable base 166 directly below the upper guide plate 172 so as to be movable in the front-rear direction. A pair of positioning pins 182 are erected on the rear end of the lower guide plate 181, and the positioning pins 182 are engaged in a pair of positioning holes 183 formed in the base plate 171, and both upper and lower guide plates 172 are provided. , 181 are integrally movable in the front-back direction.

The movable table 166 is provided on both left and right sides of the lower guide plate 181.
A sliding plate 184a is supported on the upper side so as to be movable in the left-right direction, and the sliding plate 184a is placed on the sliding plate 184a.
b are movably supported in the front-rear direction, and lateral guide plates 185, 186 are provided upright on the sliding plates 184b. An air cylinder 187 is attached to the rear end of the movable base 166, and both sliding plates 184b are connected to an interlocking plate 188 attached to a piston rod 187a so as to be movable in the left-right direction.

A push rod 190 is supported on a base plate 189 on the rear end of the movable base 166 so as to be movable in the front-rear direction, and the push rod 190 extends on the lower guide plate 181. A push-in portion 190a is provided at the front end of the push-in rod 190. An electric motor 191 is mounted on a base plate 189, and a belt 19 is attached to a pulley 192 on an output shaft 191a.
3 is wound. One end 19 of this belt 193
3a is a pushing rod 19 via a pulley 194 on a base plate 189.
0, and the other end 193b is connected to the pulley 1
The push rod 190 is attached to the rear end of the push rod 190 via the intermediate member 94.
Each of the sliding plates 184a, 184b, both lateral guide plates 185,
186, air cylinder 187, interlocking plate 188, base plate 18
9, push rod 190, electric motor 191, pulley 192,
The belt 193 and both pulleys 194 are installed on the left and right sides of the movable base 166, respectively.

A pair of front and rear pinions 184c and 184d are supported below the movable base 166, and are linked by a chain 184e. A pair of front and rear racks 184f and 184g are supported on the lower side of the movable base 166 so as to be movable in the left and right directions, and one set of racks 184f is mounted on both left and right sliding plates 184a of the pair of left and right sliding plates 184a. While being attached, another set of racks 184g is attached to both right sliding plates 184a.
An electric motor 184h is attached to the lower side of the movable base 166, and one of the pinions 1 is driven by the electric motor 184h.
84d is adapted to rotate. When both pinions 184c and 184d rotate via the chain 184e, the respective racks 184f and 184g move, and the left and right lateral guide plates 185 and 186 are moved at the same distance from the center of the pushed items on the lower guide plate 181. It is designed to approach or move away.

As described above, when the movable base 166 moves in the left-right direction, one of the lower guide plates 181 and the two lateral guide plates 18
5, 186 are located below the upper guide plate 172, and the guide plates 172, 181, 185, and 186 form an article supply cylinder 195.

In the stored article supply cylinder 195, the upper guide plate 172 is moved by the rotation of the electric motor 177.
0, the upper guide plate 172 and the lower guide plate 1
The interval between the two and 81 changes. Also, the left and right lateral guide plates 18
The 5,186 spacing can also be varied as described above.

The two sliding plates 184 are operated by the air cylinder 187.
When b moves in the front-rear direction together with the interlocking plate 188, the left and right lateral guide plates 185 and 186 move the bag opening holding device 131.
Approaching or moving away from When the movable plate 169 moves in the front-rear direction together with the electric motor 177 and the movable rod 170 by the rotation of the electric motor 173, the upper guide plate 172 moves in the front-rear direction together with the lower guide plate 181 to approach or close the bag opening holding device 131. Separate. When the belt 193 is moved in the front-rear direction by the rotation of the electric motor 191, the pushing portion 190 a of the pushing rod 190 moves in the front-rear direction on the lower guide plate 181, and approaches or separates from the bag opening holding device 131. (Regarding the bag mouth gripping / transferring device 196) Next, in a state where the contents are put in the bag 300, the mouth portion 301 is moved to the transport chain.
The device 196 that is separated from the bag mouth gripping members 105 and 106 on the holding device 85 and re-gripped will be described mainly with reference to FIGS. 1 and 20 to 22, 26 and FIGS.

The transport chain device 8 of the bag transport device 84
In FIG. 5, a holding plate 113 and an air cylinder 112 are provided on the drive shaft 96 side, and a pair of left and right bag opening is opened below a bracket 197 attached to a rear machine frame 88 above. Arm 198 has parallel crank mechanism 199
Supported by An air cylinder 200 is mounted on the bracket 197, and its piston rod 200a is connected to a lever 201 on the bracket 197. The rotation of the lever 201 is controlled by the gears 202, 2
The power is transmitted to shafts 199a of the left and right parallel crank mechanisms 199 via 03, 204, 205, 206, and 207. The air cylinder 200 allows the left and right bag opening arms 198 to open and close horizontally in the left-right direction with respect to the bag opening center R, so that a state of protruding forward and a state of retreating backward can be taken. .

An air outlet pipe 208 is provided on the center R of the bag mouth, and air is blown from the outlet 208a into the left and right arms 1 of the bag mouth.
It blows forward between 98. A bag opening pushing rod 209 is rotatably supported by the front machine frame 87 in front of the bag opening expanding arm 198, and extends horizontally along the left-right direction. The bag mouth pushing rod 209 is connected to the holding plate 113 via an interlocking plate 210 and a lever 211. Then, the bag-mouth pushing-out rod 209 is rotated in the up-down direction by the air cylinder 112 so that the upper and lower positions of the left and right bag-opening arms 198 can be taken.

The upper and lower rails 21 attached to the front machine frame 87 along the loading conveyor 86 of the bag conveying device 84.
2 and 213, a movable plate 214 is supported so as to be movable in the left-right direction.
5 is movably supported in the up-down direction. Movable plate 21
An air cylinder 216 is attached to the upper part of the cylinder 4, and its piston rod 216 a is connected to the movable body 215. A gripping rod 217 extends horizontally on the movable plate 214,
Above the gripping rod 217, the movable body 215 is also provided with the gripping rod 21.
8 extends horizontally. And the air cylinder 21
6, the movable body 215 moves up and down, and the gripping rod 218 of the movable body 215 comes into contact with or separates from the gripping rod 217 of the movable plate 214.

The two gripping rods 217, 218 are composed of left and right gripping parts 217a, 217b, 218a, 218b.
The left and right upper and lower gripping portions 217a and 218a are positioned in front of the bag opening widening arm 198 and the bag opening pushing rod 209 by the movement of the movable plate 214. (Regarding bag mouth pulling device 219) Next, a device 219 for pulling the mouth portion 301 in the state of being put in the bag 300 to tension the bag 300 with respect to the bag is shown in FIGS.
28 will be mainly described.

The base plate 221 is supported so as to be horizontally movable in the front-rear direction along a pair of rails 220 attached to the machine frame 88 on the rear side of the bag opening and transferring device 196 on the bag conveying side. A lower gripping plate 222 is mounted on the base plate 221. An upper holding plate 223 is supported on the base plate 221 so as to be rotatable up and down around a shaft 224.
A rotary air cylinder 225 is mounted on the base plate 221, and its piston rod 225 a
6, the shaft 22 through the link 227 and the lever 228.
4. Then, the upper grip plate 223 is turned by the rotary air cylinder 225 into the lower grip plate 2.
22 can be opened and closed.

An air cylinder 229 is attached to the rear machine frame 88, and its piston rod 229a is attached to the base plate 22.
Connected to 1. The base plate 221 is urged rearward by a spring (not shown). The base plate 221 moves on both rails 220 in the front-rear direction together with the upper grip plate 223 and the rotary air cylinder 225 by the air cylinder 229 and the spring.

The guide plate 230 is provided above the gripping rod 217 of the movable plate 214 so that the loading conveyor 86 of the bag conveying device 84
Extending along the lower end edge 230a and the gripping rod 2
A narrow guide path 231 is formed between the right guide portion 217 and the right grip portion 217b. (About the bag mouth twisting device 232) Next, the device 232 for twisting the mouth portion 301 in a state where the contents are put in the bag 300.
Will be described mainly with reference to FIG. 1 and FIGS.

A gear 234 is attached to a bearing 233 attached to the machine frame 88 on the rear side of the bag opening pulling device 219 on the bag transport side.
Are rotatably supported, and a gripping body 236 is connected via a lever 237 to a pair of mounting plates 235 attached to the gear 234. The bearing 233 and the gear 234
Inside, a sliding shaft 238 is supported so as to be movable in the axial direction thereof, and a link 239 is connected between the sliding shaft 238 and the levers 237. An air cylinder 240 is attached to the rear machine frame 88, and its piston rod (not shown) is connected to a slide shaft 238. Then, the sliding shaft 238 is moved in the front-rear direction by the air cylinder 240, and the two grippers 236 are connected to the link 239 and the lever 2.
37 are opened and closed with each other. The rotation of the drive shaft 241 is transmitted to the gear 234 via a gear 242. When the gear 234 rotates with respect to the bearing 233 and the sliding shaft 238, the two grippers 2 are rotated.
36 also rotates.

A rack 243 is provided at the lower end of the movable plate 214.
Are attached by a mounting portion 214a, and a pinion 244 on a drive shaft 241 is engaged with the rack 243. The movable plate 214 is reciprocated in the left and right directions by a cam lever (not shown).
The drive shaft 241 rotates via the pinion 3 and the pinion 244.

The left and right gripping rods 245 are supported by the movable body 215 below the air cylinder 216 so as to be rotatable in the left and right directions around a shaft 245 a. The two gripping rods 245 face the gripping rods 217 of the movable plate 214. Extending downward.
A spring 246 is connected to the two gripping rods 245, and the springs 246 urge the two gripping rods 245 to open each other. Piston rod 21 of air cylinder 216
Left and right rollers 247 are supported on 6a, and when both rollers 247 move together with this piston rod 216a, both gripping rods 245 are pressed by these rollers 247 against each other against the urging force of spring 246 so as to close each other. It has become. (About the bag-mouth tape sticking device 248)
In the state where the contents are put in the
1 and 22 and 26 to 3 in FIG.
Description will be made mainly with reference to 0.

Both gripping bodies 23 of the bag mouth twisting device 232
The left and right grip plates 249 are attached to the front machine frame 87 in front of
50 and 251 are supported so as to be rotatable in the left-right direction. An air cylinder 252 is attached to the front machine frame 87, and a piston rod 252a thereof is connected to a shaft 250 of one gripping plate 249 via a lever 253, and the rotation of the shaft 250 connects the gears 254, 255. The transmission is transmitted to the other shaft 251 via the other shaft 251.
Then, the left and right grip plates 249 are operated by the air cylinder 252.
Are rotated to open and close with each other.

A binding device 256 is attached to the movable plate 214. The bundling device 256 is a well-known device, and has a mouth portion 301 of the bag 300 to be carried into the binding passage 257.
Has the same structure as that disclosed in Japanese Utility Model Laid-Open No. 59-138507.

The interlocking rod 162 of the bag delivery device 156 is connected to the upper end of the movable plate 214. Therefore, both the movable plates 158 and 161 of the bag delivery device 156 and the suction unit 159
Then, the upper and lower gripping rods 217 and 218, the left and right gripping rods 245, and the binding unit 256 on the movable plate 214 integrally move in the left and right direction.

Then, the suction section 159 of the bag delivery device 156
Are lined up with the suction section 126 of the bag vertical opening device 123,
Left grip portions 217a, 217 of upper and lower grip bars 217, 218
18a corresponds to the bag mouth widening arm 198 and the bag mouth pushing rod 209 of the bag mouth holding and transferring device 196, and the right hand grip 217 thereof.
b, 218b are the gripping plates 222, 2 of the bag mouth pulling device 219.
Corresponding to 23. Further, both gripping rods 245 of the bag mouth twisting device 232 correspond to the holding plates 222 and 223 of the bag mouth pulling device 219. At this time, the binding device 256 in the bag-mouth tape attaching device 248 corresponds to the both grip plates 249.

On the other hand, when the suction portion 159 corresponds to the bag opening holding device 131, the left holding portions 217a and 218a of the both holding rods 217 and 218 correspond to the holding plates 222 and 223 of the bag opening pulling device 219. Right grip 217
b and 218 b are both gripping bodies 236 of the bag mouth twisting device 232.
And both gripping plates 249 of the bag mouth tape sticking device 248. The gripping rods 245 of the bag mouth twisting device 232 correspond to the both grippers 236 of the bag mouth twisting device 232 and the both grip plates 249 of the bag mouth tape attaching device 248. At this time, the binding device 256 is separated from both grip plates 249 in the bag mouth tape attaching device 248. (Each device 34, 51, 6 according to the size of the bag 300)
4, 71, 85, 123, 131, 156, 163) First of all, before operating the bag packaging machine, the bag 3
00, each device 34 of the bag feeding device A,
51, 64, 71, the transport chain device 85, and the respective devices 123, 131, 156, 163 of the contained material supply device B.
Adjust the adjustment.

That is, when a controller (not shown) is operated, the electric motor 56 rotates in the bag feeding device A,
The distance between the left and right suction parts 46 of the bag removal device 34, the distance between the upper left and right suction parts 58 in the bag longitudinal opening device 51 and the distance between the lower left and right suction parts 62, and the upper right and left grip in the bag delivery device 64. The space between the attachment portions 66 and the lower left and right clamping portions 6
7, right and left upper and lower plates 7 in the bag lateral opening device 71
The spacing of 2,73 is adjusted. Further, the electric motor 103 rotates in the transport chain device 85 of the bag transport device 84, and the pair of gripping bodies 105, 1 are driven via the differential gear mechanism 97.
The interval of 06 is adjusted.

Further, in the bag vertical opening device 123 of the contents supply device B, the electric motor 127 rotates,
The uppermost position of 26 is adjusted. Similarly, in the bag opening holding device 131, the electric motor 149 rotates, and the interval between the left and right vertical expanding claws 143 and the upper and lower left and right horizontal expanding claws 14 on both left and right sides.
7,148 are adjusted and the electric motor 1
50 is rotated, and the uppermost movement positions of the left and right vertical expansion claws 143 and the left and right upper horizontal expansion claws 147 are adjusted.
Similarly, in the bag delivery device 156, the uppermost movement position of the suction unit 159 is adjusted in conjunction with the expanding claws 143, 147. Similarly, in the container pushing-in device 163, the electric motor 184h rotates, and the interval between the left and right lateral guide plates 185 and 186 in the container supply tube 195 is also adjusted.

In the bag storage case 29 of the bag storage device 1, a large number of bags 300 are stacked on the bottom
01 is directed to the bag conveying side, and the interval between the left and right side plates 31 is adjusted. (Regarding Operation Between Bag Storage Device 1 and Bag Removal Device 34) Next, the operation of sequentially taking out the bags 300 from the bag storage case 29 will be described with reference to FIG.

In FIG. 31 (a), one of the left and right bag storage cases 29 in the bag storage device 1 is positioned below the left and right suction portions 46 of the bag removal device 34 in the lowest state. Both suction parts 46 are at the uppermost movement position. When the two suction units 46 are moved downward by the air cylinder 49 and one of the bag storage cases 29 is moved upward by the electric motor 12, as shown in FIG.
The suction surface 46a of No. 6 abuts on the left and right sides of the mouth portion 301 of the uppermost bag 300 and sucks. Then, as shown in FIG. 31 (c), the left and right suction portions 46 suck only the uppermost bag 300 and return to the uppermost movement position, and one of the bag storage cases 29 also returns to the lowermost movement position. Therefore, the top bag 300
Only the left and right suction parts 46 are sucked and taken out horizontally above the bag storage case 29.

Protrusions 47 are formed on both front and rear sides of the suction surface 46a of both the left and right suction portions 46, and a recess 48 is formed between them. Dent 48
31 (d), and the curved shape makes it easier for the mouth portion 301 to extend linearly in the left-right direction. In particular, a mouth portion 301 outside the left and right suction portions 46
Will not hang down. (Regarding the Operation Between the Bag Extraction Device 34 and the Bag Delivery Device 64) Next, the operation of transferring the bag 300 from the left and right suction portions 46 of the bag extraction device 34 to the bag delivery device 64 will be described with reference to FIG. I do.

From the state shown in FIG.
4 reaches the bag removing device 34, the left and right ends of the mouth portion 301 of the bag 300 between the upper and lower clamping portions 66, 67 on the left and right sides of the bag delivery device 64 outside the left and right suction portions 46 of the bag removing device 34. The part is inserted. Then, as shown in FIG. 32 (b), the lower holding portion 67 is moved upward by the air cylinder 69 and abuts on the upper holding portion 66. , 67. Then, FIG.
(C) As shown in (d), the suction by the left and right suction portions 46 is released, and the left and right upper and lower holding portions 66 and 67 are placed in the bag 30.
It moves toward the bag vertical opening device 51 with the “0” pinched.

As described above, since the left and right ends of the mouth portion 301 of the bag 300 have tension without hanging down, it is necessary to securely hold the both ends by the left and right upper and lower holding portions 66 and 67. Can be. (Regarding the action between the bag delivery device 64 and the bag vertical opening device 51) Next, the bag 300 transferred by the bag delivery device 64
The operation of opening the mouth part 301 up and down will be described with reference to FIG.

From the state shown in FIG.
When the bag 4 reaches the bag vertical opening device 51, the mouth portion 301 of the bag 300 is placed on the left and right lower suction portions 62 of the bag vertical opening device 51 between the left and right upper and lower holding portions 66 and 67 of the bag delivery device 64. Appears. Then, as shown in FIG. 33 (b), the left and right upper suction portions 58 are moved downward by the air cylinder 59, and the mouth portion 301 of the bag 300 is held between the suction surfaces 58a and 62a. Thereafter, the lower holding portion 67 of the bag delivery device 64 is moved downward by the air cylinder 69, and the upper and lower holding portions 66, 67 are opened. Then, as shown in FIG. 33C, the suction surfaces 58a, 6 of the suction portions 58, 62 of the bag vertical opening device 51.
When the mouth portion 301 is sucked by 2a and the upper suction portion 58 is moved upward by the air cylinder 59, the upper edge 302 and the lower edge 303 of the mouth portion 301 are vertically separated to open the mouth portion 301.

While the mouth 301 is opened in this way, the bag lateral opening device 71 approaches the bag vertical opening device 51, and the bag delivery device 64 linked with the bag lateral opening device 71 by the rod 70 again It approaches the removal device 34. (Regarding the action between the bag vertical opening device 51 and the bag horizontal opening device 71) Next, the operation of opening the mouth 301 of the bag 300 opened vertically by the bag vertical opening device 51 in the left-right direction is shown in FIG.
This will be described with reference to FIG.

As shown in FIG. 34 (a), when the left and right expanding arms 76 of the bag lateral opening device 71 are closed, the bag 300 is closed.
34 (b) and (c), the left and right expanding arms 76 are opened by the air cylinder 75, and the suction portions 5 of the bag vertical opening device 51 are opened.
8 and 62, the left and right edges 304 are pushed out and the upper and lower edges 3 are opened with the mouth 301 opened.
02 and 303 are stretched linearly. Simultaneously with this lateral opening operation, the bag 300 is delivered from the bag removal device 34 to the bag delivery device 64.

Thereafter, the bag lateral opening device 71 moves toward the carrying chain device 85 of the bag carrying device 84 while holding the bag 300. At this time, the bag delivery device 64 also moves toward the bag vertical opening device 51 while holding the bag 300 therebetween. (Regarding the Operation Between the Bag Side Opening Device 71 and the Transport Chain Device 85) Next, the operation of transferring the bag 300 from the bag lateral opening device 71 to the transport chain device 85 will be described with reference to FIG.

When the bag lateral opening device 71 reaches the bag transfer position P of the transport chain device 85 from the state shown in FIG. 34D, the upper and lower holding pieces 10 of the left and right grippers 105 and 106 are moved.
The lower edge 303 of the mouth portion 301 is inserted between 9, 107.
Then, the left and right upper holding pieces 1 are moved by the air cylinder 110.
When the pivot 09 rotates, as shown in FIG. 34 (e), the lower edge 30 of the mouth portion 301 is located between the left and right upper and lower holding pieces 109 and 107.
3 is pinched. Thereafter, the left and right expanding arms 76 are closed by the air cylinders 75 and 78 and move obliquely upward to come out of the mouth 301.

As described above, the mouth 3 is extended by the left and right arms 76.
When the lower edge 01 is opened sideways and the lower edge 303 is provided with tension, when the lower edge 303 is clamped by the left and right gripping bodies 105 and 106, the lower edge 303 has tension without hanging between them.

Thus, the bag supply operation is completed, and the contents are supplied to the bag 300 in the next step. (Regarding the action between the bag vertical opening device 123 and the bag delivery device 156) Next, before the bag 300 transferred by the transport chain device 85 reaches the bag opening holding device 131, the mouth portion 30 is opened.
The operation of opening 1 vertically will be described with reference to FIG.

As described above, the left and right grips 105, 10
The bag 300 clamped by 6 is transported toward the bag vertical opening device 123 by the transport chain device 85 while being placed on the flat belt 114 of the loading conveyor 86. In this bag vertical opening device 123, the suction unit 126 is driven by the electric motor 127.
Moves downward, as shown in FIG.
Is sucked on the bag 300 separated from the upper edge 302 of the bag. Then, when the suction unit 126 is moved upward by the electric motor 127, as shown in FIG.
The upper edge 302 of the opening 301 is separated upward from the lower edge 303 of the opening 301 sandwiched by the left and right grips 105 and 106, and the opening 301 is opened.

In this state, as shown in FIG.
The suction section 159 of the bag delivery device 156 is
When the suction portion 126 is lined up, the mouth portion 301 is sucked by the suction portion 159, and the suction by the suction portion 126 is released, and the mouth portion 301 is held open.
The bag 300 is transferred to the bag opening holding device 131 in the holding state. (Regarding Operation of Bag Opening Holding Device 131) Next, a device 131 for opening the mouth portion 301 of the bag 300 held by the bag delivery device 156 into a predetermined shape will be described with reference to FIG.

The left and right grips 10 of the transport chain device 85
When the mouth 301 of the bag 300, which is opened up and down by the suction units 5 and 106 and the suction unit 159 of the bag delivery device 156, reaches the bag opening holding device 131, the left and right vertical expanding claws 143 and the left and right 147,1
48 is rotated and inserted into the mouth 301, and the suction by the suction unit 159 of the bag delivery device 156 is released.
And the upper edge 302 of the mouth part 301
3 and the left and right edges 30 of the mouth 301
4 is opened by the left and right upper and lower horizontal expanding claws 147 and 148. Accordingly, the opening 301 is opened in a substantially octagonal shape by the expanding claws 143, 147, and 148 and the grippers 105 and 106 of the transport chain device 85. Bag 3 in that state
00 is placed on the flat belt 117 of the loading conveyor 86.

The octagonal shape of this mouth portion 301
43, 147, 148 and the movement adjustment of the gripping bodies 105, 106 can be arbitrarily adjusted according to the size and shape of the stored object. (Regarding the operation of the container push-in device 163) Next, the bag
The operation of pushing the contents into 00 will be described with reference to FIG.

As shown in FIG. 37 (a), when the mouth portion 301 of the bag 300 is opened, first, the electric motor 177 rotates in the container supply tube 195, and the upper movement position of the upper guide plate 172 is adjusted. You. Then, as shown in FIG. 37B, the upper and lower guide plates 172 and 181 are moved by the electric motor 173 to be inserted to the bottom of the bag 300 in the container supply tube 195, and are also moved to the left and right by the air cylinder 187. The guide plates 185 and 186 are both right and left edges 3 of the mouth portion 301.
Approaching near 04. Further, when the pushing rod 190 is moved by the electric motor 191, the contents in the supply tube 195 are passed through the opening 301 by the pushing portion 190a and the bag 300 is moved.
Supplied within. Since the shape of the mouth portion 301 can be adjusted as described above, the supply is smoothly performed according to the contents.

After the supply, as shown in FIG.
The electric motor 173 causes the upper and lower guide plates 172, 181 to first escape from the inside of the mouth 301, and then the push-in rod 190 to escape from the inside of the mouth 301 by the electric motor 191 and separates therefrom. ,
186 moves away from the mouth 301. Then, the left and right vertical expanding pawls 143 and the left and right upper and lower horizontal expanding pawls 147 and 148 are rotated by the air cylinder 154 to come out of the mouth 301,
Only the lower edge 303 of the opening 301 is clamped by only the left and right grips 105 and 106 of the transport chain device 85.

Thus, the supply of the contents into the bag 300 is completed. Thereafter, in the next step, the binding of the mouth portion 301 of the bag 300 is performed. During this process, the bag 300 on the loading conveyor 86 is vibrated. (Regarding the operation of the bag mouth gripping transfer device 196) Next, the operation of separating and holding the mouth portion 301 from both the grippers 105 and 106 of the transport chain device 85 will be described with reference to FIG.

As shown in FIG. 38 (a), the bag conveying device 8
When the bag 300 reaches the bag-mouth holding and transferring device 196 by the transport chain device 85 and the loading conveyor 86 of No. 4, the mouth 301 is expanded by the air blown out from the air blowing pipe 208. Then, as shown in FIGS. 38B and 38C, the left and right bag opening arms 198 are rotated by the air cylinder 200 and inserted into the opening 301, and the left and right edges 30 of the opening 301 are opened.
4 is opened in the left-right direction, and both upper and lower edges 302 of the mouth portion 301,
303 is set. Next, as shown in FIG.
The upper gripping rod 218 is moved downward by the air cylinder 216, so that the left gripping portions 218a of the upper and lower gripping rods 218, 217,
The mouth part 301 is clamped by 217a. Then, FIG.
As shown in FIG. 8 (e), the holding plate 113 is moved by the air cylinder 112 in the transfer chain device 85, and the upper and lower holding pieces 109, 107 of the left and right gripping bodies 105, 106 are opened with each other. Push rod 2
09 pivots and pushes the mouth 301 upward to separate it from both gripping bodies 105 and 106. At this time, the bag mouth widening arm 1
98 is pulled out of the mouth 301. Therefore, the mouth part 301 is in a state of being held by only the two gripping rods 217 and 218.

When both gripping rods 217 and 218 correspond to the left and right bag opening arms 198, the bag delivery device 15
The suction section 159 of 6 performs the same operation as the above-described case corresponding to the bag vertical opening device 123. (Regarding the operation of the bag mouth pulling device 219)
The action of pulling the opening 301 of the bag 300 to tension the housing portion 305 of the bag 300 will be described with reference to FIG.

As shown in FIG. 39 (a), with the housing portion 305 of the bag 300 resting on the flat belt 117 of the loading conveyor 86, the two gripping rods 217, 218 for holding the mouth portion 301 of the bag 300 are used. When the left grips 217a and 218a move to correspond to the upper and lower grip plates 222 and 223, the mouth 3
01 is the lower edge 230a of the guide plate 230 and the lower gripping rod 2
17 is inserted into the guideway 231 between the two. From this state, as shown in FIG. 39 (b), the upper gripping plate 223 is rotated by the rotary air cylinder 225, and the mouth portion 301 is clamped between the upper and lower gripping plates 223, 222. Thereafter, as shown in FIG. 39 (c), the upper gripping rod 218 is moved upward by the air cylinder 216, and the lower gripping rod 217 is moved.
The upper and lower gripping plates 223 and 222 are moved by the air cylinder 229, and the opening 301 of the bag 300 is moved with respect to the accommodation portion 305 of the bag 300 abutting on the guide plate 232 on the flat belt 117 of the loading conveyor 86. The storage portion 305 is tensioned to reduce the looseness of the storage object. (Bag mouth twisting device 232 and bag mouth tape sticking device 248
Next, the operation of rotating the mouth portion 301 with respect to the storage portion 305 of the bag 300 and twisting the neck portion 306 between them will be described with reference to FIGS.

As shown in FIG. 40 (a), the two gripping rods 217, 218 are moved and their left gripping parts 217a, 217 are moved.
18 a corresponds to the bag mouth widening arm 198 of the bag mouth holding and transferring device 196, and the left and right holding rods 245 of the bag mouth torsion device 232 are both holding plates 222, 22 of the bag mouth pulling device 219.
40, the upper gripping rod 218 is moved downward by the air cylinder 216, and both the left and right gripping rods 245 are closed, as shown in FIGS.
The mouth portion 301 of the bag 300 at
8, 217 are squeezed by the right grips 218 b, 217 b and the left and right grip bars 245, and
A neck 306 is formed between the lip and the mouth 301.

Thereafter, as shown in FIG. 40 (d), the upper holding plate 223 is rotated by the rotary air cylinder 225, and the two holding plates 223 and 222 are separated. Then, as shown in FIGS. 41 (a) and (b), each gripping rod 217, 21
8, 245 move to correspond to both grippers 236 of the bag mouth twisting device 232 and both grip plates 249 of the bag mouth tape attaching device 248.

Thereafter, as shown in FIG. 41C, the left and right grip plates 249 are closed by the air cylinder 252 in the bag mouth tape attaching device 248, and the neck 3 of the bag 300 is closed.
06 is held between the left and right grip plates 249.

Then, as shown in FIG. 41 (d), the two grippers 236 are closed by the air cylinder 240, and the mouth 301 of the bag 300 is gripped. On the other hand, FIG.
As shown in FIG. 7, the upper gripping rod 218 is moved upward by the air cylinder 216 to separate from the lower gripping rod 217, and the left and right gripping rods 245 hear each other. Each gripping rod 21
7, 218 and 245 move away from the neck 306 and correspond to the bag-mouth pulling device 219.

The mouth portion 301 of the bag 300 is
6, the neck 306 is twisted with respect to the receiving portion 305. In this way, the neck 306 of the bag 300 is held between the gripping plates 249, and the necks 306 are twisted by the rotation of the grippers 236 together with the gripping rods 217, 218, and 245. When the binding device 256 moves, the neck portion 306 is inserted into the binding passage 257 as shown in FIG. Then, as shown in FIG.
The tape 307 is stuck to 6. The cut piece of the mouth 301 cut by the binding device 256 is collected.

The neck portion 306 of the bag 300 is twisted and bound while being held by the two gripping plates 249, so that the twisting operation and the binding operation are stabilized.

[0117]

According to the bag opening holding device 131 of the bag packing machine according to the present invention, it is easy to change the shape of the opening of the mouth portion 301 of the bag 300, and it is easy to cope with a change in the contents.

[0118]

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a bag supply device, an article supply device, and a bag opening unit in a horizontal bag filling and packaging machine according to the present embodiment.

FIG. 2 is a side sectional view showing a bag storage device of the bag supply device.

FIG. 3 is a partially cutaway front view.

FIG. 4 is a partially cutaway plan view.

FIG. 5 is a side sectional view showing a bag removing device and a bag delivery device of the bag supplying device.

FIG. 6 is a plan view of the same.

FIG. 7 is a side sectional view showing a bag vertical opening device and a bag horizontal opening device of the bag supply device.

FIG. 8 is a plan view of the same.

9A is a plan view showing a bag carrying chain device and a bag placing conveyor in the bag carrying device, and FIG. 9B is a front sectional view showing the bag placing conveyor.

FIG. 10 is a partial plan sectional view showing a differential gear mechanism for adjusting the interval between each pair of bag mouth gripping members in the bag conveying chain device.

FIG. 11 is a side sectional view showing a bag mouth gripper in the bag transport chain device and a bag mouth pushing-out rod in the bag mouth gripping transfer device.

FIG. 12 is a side sectional view showing the bag placing conveyor.

FIG. 13 is a front view showing a bag vertical opening device, a bag opening holding device, and a bag delivery device of the container supply device.

FIG. 14 (a) is a partially cutaway side view,
(B) is a partial sectional side view of the bag opening holding device.

FIG. 15 is a front view showing a state in which the suction unit of the bag delivery device corresponding to the bag opening holding device in FIG. 13 corresponds to the suction unit of the bag vertical opening device.

FIG. 16 is a plan sectional view of the same.

FIG. 17 is a side cross-sectional view showing an article pushing-in device of the article supply device.

FIG. 18 is a plan view of the same.

FIG. 19 is a partial front sectional view of the same.

FIG. 20 is a front view showing a bag mouth holding and transferring device of the bag mouth binding device.

21 (a) is a plan view showing the bag mouth gripping transfer device, and FIG. 21 (b) is a plan sectional view thereof.

FIG. 22 is a front view showing a part of the bag mouth binding device.

FIG. 23 is a plan view showing a bag mouth pulling device of the bag mouth binding device.

FIG. 24 is a side view of the same.

FIG. 25 is a front view of the same.

FIG. 26 is a partially cutaway front view showing a state where each gripping rod of the bag mouth twisting device corresponds to the bag mouth tensioning device in the bag mouth binding device.

27 is a partially cutaway front view showing a state where the guide plate of the bag-mouth pulling device is removed from the state shown in FIG. 26;

FIG. 28 is a partially cutaway front view showing a state in which each gripping rod of the bag-mouth twisting device corresponds to the gripper of the bag-mouth twisting device or the gripping plate of the bag tape sticking device in the bag-mouth binding device.

FIG. 29 is a partial plan view showing a gripper of the bag mouth twisting device and a grip plate of the bag mouth tape attaching device in the bag mouth binding device.

FIG. 30 is a partial front view showing a gripping plate of the bag mouth tape attaching device.

FIGS. 31 (a) to (d) are views for explaining the operation between the bag storage device and the bag removal device in the bag supply device.

FIGS. 32 (a) to (d) are explanatory views of the operation between the bag removing device and the bag delivery device in the bag feeding device.

FIGS. 33 (a) to (c) are views for explaining the operation between the bag delivery device and the bag vertical opening device in the bag supply device.

FIGS. 34 (a) to (c) are explanatory views of the operation between the bag longitudinal opening device and the bag lateral opening device in the bag feeding device;
(D) and (e) are action explanatory views between a bag lateral opening device and a bag transport chain device.

FIGS. 35 (a) to (c) are explanatory views of the operation between the bag vertical opening device and the bag delivery device in the container supply device.

FIGS. 36 (a) and (b) are operation explanatory views showing a state between the bag delivery device and the bag opening holding device and an opening holding state of the bag mouth in the container supply device.

FIGS. 37 (a) to (c) are explanatory views of the operation of the stored material pushing-in device for the bag on the bag opening holding device in the stored material supply device.

FIGS. 38 (a) to (e) are explanatory views of the operation of the bag mouth holding and transferring device in the bag mouth binding device.

FIGS. 39 (a) to (c) are explanatory views of the operation of the bag mouth pulling device in the bag mouth binding device.

FIGS. 40 (a) to (d) are explanatory views showing a squeezing action of a mouth portion in a bag mouth twisting device in the bag mouth binding device.

41 (a) to 41 (e) show a bag mouth portion transfer operation and a bag mouth portion between each gripping rod of the bag mouth twisting device and the gripping plate of the bag mouth tape attaching device in the bag mouth binding device. It is explanatory drawing which shows the holding | grip operation | movement of the bag mouth part by the holding body of a twisting apparatus.

FIG. 42 (a) is an explanatory view of an operation of the bag mouth tape attaching device in the bag mouth binding device, and FIG. 42 (b) is a partial perspective view showing the bag mouth sealed with tape.

[EXPLANATION OF SYMBOLS] 1 05 bag mouth gripper as a first expander member, the bag mouth gripper as 106 first expander member, B contained goods supply device,
123 bag vertical opening device, 131 bag opening holding device, 14
3 Vertical expansion nail as a second expander member, 147 horizontal expansion nail as a third expander member, 148 horizontal expansion nail as a fourth expander member, 3 00 bags, 301 mouth portion.

Claims (2)

(57) [Claims] 1. A pair of first expanding members (105) respectively inserted into and removed from the mouth (301) on one of two opposing sides of the mouth (301) of the bag (300). , 10
6) and a second expanding member (143, 143), and a pair of third expanding members (147, 148) and a fourth expanding member respectively inserted into and removed from the mouth (301) on the other opposite sides. An opening member (147, 148), and the first expanding member (105, 106) and the second expanding member (143, 143) are connected in a direction ( 301a) so as to be able to approach and separate from each other, and the third expanding member (147, 148) and the fourth expanding member (147, 148) are arranged in the direction (301b) between the other two sides of the mouth portion (301). ), And a pair of first expanding members (105) and (106) and a pair of second expanding members (143) and (143) are respectively provided on both sides of the other side of the mouth portion (301). To be able to approach and separate from each other in the direction (301b) between , A pair of third spreading element (147) (148) and a pair of fourth spreading element (14
7) A bag opening holding device in a bag packing machine, wherein (148) is provided so as to be able to approach and separate from each other in a direction (301a) between both sides of one of the mouth portions (301). 2. The pair of second expanding members according to claim 1, wherein the pair of first expanding members (105, 106) are immovable in a direction (301a) between both sides of one of the mouth portions (301). The opening members (143, 143) move in a direction (301a) between the two sides of the mouth (301) so as to be able to approach and separate from the pair of first expanding members (105, 106). The first expanding members (105) and (106) and the pair of second expanding members (143, 143) are each provided with a mouth (3).
01) can move toward and away from each other by moving in the direction (301b) between the other two sides, and the pair of third expanding members (147, 148) and the pair of fourth expanding members (147, 148) It is possible to move together in the direction (301b) between the other two sides of the mouth (301) and to approach and separate from each other, and among the expanding members (147, 148), the first expanding member (105, 106). The third and fourth expanding members (148, 148) close to are incapable of moving in the direction (301a) between one side of the mouth (301) and the second expanding members (143, 143). The third and fourth expanding members (147, 147) close to each other move in the direction (301a) between the two sides of the mouth portion (301), and move to the first expanding member (1).
05, 106), the third and fourth expanding members (14
8, 148), which is capable of approaching and separating from the bag opening and closing machine in the bag packing machine.