JPH0769305A - Apparatus for sealing box - Google Patents

Abstract

PURPOSE:To automate a task for removing an opening end from a lid piece, closing the opening end and enclosing it inside a box by respectively providing mechanisms for pulling up the opening end of a bag, pressing it and further pushing both ends of the end along the box. CONSTITUTION:A holding claw 38 is inserted between an opening end 5a of a bag 5 which is sucked and pulled by a suction disk 33 and a long lid piece 3b, and the opening end 5a is held by the holding claw 38 and a holding claw 54. The holding claws 38, 54 rotate, and the opening end 5a held by them faces upward. Rising air is jetted from a transfer claw, so that the opening end 5a in a free mode opens and is kept facing upward. A tip of an insertion arm 61 enters the opening end 5a, and the end 5a is pulled flat by the tip of the insertion arm 61. When long lids 3a, b are pressed in a closing direction by pressing boards 87, 88, an upper part of the bag 5 is pushed and air in the bag 5 is vented. Then a cylinder mechanism draws out the insertion arm 61 from the opening end 5a, thereby completing sealing of the opening end 5a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for processing a bag in which a bag is inserted inside a box body such as a corrugated cardboard box and the bag is filled with contents. The present invention relates to a box enclosure processing apparatus that automatically closes a part and pushes a closed part of a bag so as not to come out of a lid piece of the box.

[0002]

2. Description of the Related Art Reference numeral 1 in FIG. 21 is a known corrugated box. The box body 1 includes a pair of long lid pieces 3 a and 3 b integrally provided on an edge of a rectangular (rectangular) opening 2 a of a box body 2 and a pair of short lid pieces 4.
a and 4b. Further, at the bottom of the box body 2, the same short lid pieces 4a and 4b as described above are bent inward, and the long lid pieces 3a and 3b are bent outward to be closed.
When a liquid such as ink is filled into the inside of the box body 1 of this kind of corrugated board, a bag body 5 made of a resin film is inserted into the inside of the box body 2. Then, the opening edge 5a of the bag body 5 is supplied to the contents filling device in a state of being folded back to the outside of the long lid pieces 3a and 3b and the short lid pieces 4a and 4b, and is fed from the filling nozzle 7 to the inside of the bag body 5. The contents are filled. After the contents of the box 1 are filled, the opening edge 5a of the bag 5 is opened.
Is removed from the long lid pieces 3a, 3b and the short lid pieces 4a, 4b, the opening edge 5a is closed and stored in the box body 2, and then the short lid piece 4
Bend a and 4b inward, and further bend the long lid pieces 3a and 3b inward. Then, the long lid pieces 3a and 3b are fixed to each other by hand or by an automatic sealing device, and the box body 2
The opening 2a is closed.

[0003]

In the above-described series of operations, the filling of the contents into the bag body 5 is automatically performed by the contents filling device having the filling nozzle 7, and the long lid piece 3 is used.
The work of fixing a and 3b to each other can be automated by an automatic sealing device. However, after filling the contents, the opening edge portion 5a of the bag body 5 is attached to the long lid piece 3
There was no choice but to rely on manpower for the work of detaching from a and 3b and the short lid pieces 4a and 4b, closing the opening edge portion 5a, and putting it inside the box body 2.

The present invention has been made to solve the above-mentioned conventional problems, and the box body is designed to be able to automate the work of removing the opening edge portion of the bag body from the lid piece and further closing the opening edge portion to be housed inside the box body. It is an object of the present invention to provide an encapsulation processing device.

[0005]

According to the present invention, a bag body is inserted into a box body in which a lid piece is provided at each of four edges of a rectangular opening, and the lid piece stands up. A box enclosure processing apparatus, in which an opening edge portion of a bag body is folded back to the outside of a lid piece, and the inside of the bag body is filled with contents, the opening edge portion of the bag body being provided. The bag edge lifting mechanism that lifts the above the lid piece, the edge pressing mechanism that presses the opening edge of the bag flat, and both edges of the flattened bag are pushed along the inner surface of the box. A bag pushing-in mechanism is provided.

Further, as an example of the bag edge raising mechanism, a pair of holding claws for holding the opening edge of the bag, a claw opening / closing mechanism for opening and closing the holding claw, and an opening edge of the bag are held. A raising drive mechanism for raising the holding claw and a rotation drive mechanism for rotating the holding claw being raised by the raising drive mechanism so that the holding end faces downward.

Further, after the bag edge lifting mechanism completes the lifting of the opening edge of the bag, the edge pressing mechanism starts pressing the edge of the bag to the outer surface of the box. An air jetting mechanism is provided along which air is jetted upward to maintain the opening edge of the bag body in the upward state.

When the bag edge raising mechanism and the edge pressing mechanism are arranged in different stations, the transfer mechanism for moving the box between the stations is provided with the air injection mechanism. Can be provided.

[0009]

In the first means, the opening edge portion of the bag body folded back to the outside of the lid piece is first pulled up above the lid piece by the bag body edge portion lifting mechanism and then by the edge holding mechanism. The opening edge of the bag is pressed flat, and both edges of the bag after being pressed flat are pushed along the inner surface of the box by the bag pushing mechanism, which closes the opening edge of the bag. The operation and the storage operation in the box will be automatically performed.

The second means is a specific example of the bag body edge pulling mechanism, in which the opening edge portion of the bag body is held by a pair of holding claws, and the holding claws are lifted and raised. Since the holding claw is rotated so that its holding end faces downward in the middle of, the opening edge portion of the bag body is naturally removed from the lid piece.

In the third means, air is jetted upward along the outer surface of the box body after the lifting of the opening edge portion of the bag body is completed and before the pressing operation of the edge portion of the bag body is started. The air keeps the opening edge of the bag upward.

In the fourth means, when the opening edge of the bag is pulled up and the opening edge is pressed at different stations, the transfer mechanism is used to move the box between the stations. Air injection is performed. Therefore, in the box body while moving between the stations, the bag body is always maintained in an open state at the upper side.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view showing the overall structure of a box enclosure processing apparatus according to the present invention, and FIG. 2 is a plan view thereof. In the enclosing processing device of the box body, the right end portion of the drawing is a carry-in section 10, and stations indicated by I, II, III, IV and V are arranged at predetermined intervals behind the carry-in section 10. There is.
The carry-in section 10 includes a first roller conveyor 11 and a second roller conveyor 11.
The roller conveyor 12 of FIG. The first roller conveyor 11 can be tilted as shown in FIG. 1 with the shaft 13 as a fulcrum. Further, a stopper 14 is provided at the tip of the second roller conveyor 12. The preceding box 1 is on the second roller conveyor 12 at a predetermined position, for example, most of the box 1 is the second roller conveyor 1.
At the time when the first roller conveyor 11 has moved to the position of 2, the first roller conveyor 11 has the inclined posture shown in FIG. 1 with the shaft 13 as a fulcrum, and the succeeding box body 1 is stopped on the first roller conveyor 11. The preceding box 1 stops at the position of the stopper 14. The position of the box 1 stopped by the stopper 14 is the carry-in standby position (a).

As shown in FIG. 2, a large number of rollers 19 are provided which roll freely from the rear of the carry-in standby (a) to the fifth station V, and the upper surface of the rollers 19 serves as a conveyance path for the box 1. ing. A pair of transfer shafts 16 and 16 forming a transfer mechanism 15 are provided on the left and right sides (upper and lower sides in FIG. 2) of the conveyance path by the rollers 19. The transfer shafts 16 and 16 have a length extending from the loading standby position (a) to the fifth station V. As shown in FIG. 2, a plurality of claw brackets 17 are provided on the left and right transfer shafts 16, 16, respectively, and the transfer claws 18 are provided on the claw brackets 17 of each set.
a, 18b, ... Are fixed. The claw bracket and the transfer claw are one set of four, and six sets are provided at a pitch of L. The transfer shafts 16, 16
When the transfer shaft 16 is rotated and the transfer claws 18c are in a parallel posture, as shown in FIG. 7, the box body 1 is moved by a set of four transfer claws. Retained. Further, when the transfer claws are rotated in the vertical posture by the rotation of the transfer shafts 16 and 16, the holding of the box body 1 is released.

The pair of transfer shafts 16 and 16 are shown in FIG.
2 is reciprocally driven at a pitch indicated by L, and by this reciprocating movement, the box body 1 at the carry-in standby position (a) is moved to the first station I and the box body 1 at the first station I is moved to the second station I. Station II, then from Station II to Station III, Station III
From the fourth station IV to the fifth station V from the fourth station IV to the fourth station IV at the same time.
And the box 1 of the fifth station V is ejected. In the following, the loading standby position (a)
A set of four transfer claws moving between the first station I and the first station I is indicated by a reference numeral 18a, and a transfer claw moving between the first station I and the second station II is indicated by a reference numeral 18b and a second station II. The transfer claw moving between the third stations III is designated by reference numeral 1.
8c, and the like reference numerals 18d, 18e, and 18f.

10 to 20 show the processing operation in each of the above stations. The box body 1 at the carry-in standby position (a) has a bag body 5 inserted into the box body 2 and filled with contents 6 such as ink as shown in FIG. Further, the opening edge portion 5a of the bag body 5 has long lid pieces 3a and 3b.
And the short lid pieces 4a, 4b are folded back to the outside. When the box 1 is transferred to the first station I by the transfer claw 18a, the first station I
As shown in FIG. 1, the opening edge portion 5a of the bag body is attached to the long lid pieces 3a, 3
The work of removing from b and the short lid pieces 4a and 4b is performed.

FIG. 3 shows the mechanism located at the first station I. In this figure, the transfer direction of the box body 1 is a direction orthogonal to the paper surface. 4 is a side view as seen from the arrow IV in FIG. 3, and FIG. 5 is an operation explanatory view. The first station I is provided with a bag body edge lifting mechanism 20. In this bag body edge raising mechanism 20, an elevating base 21 is provided above the transport path of the box body 1, and a fixed base 22 is provided above the raising base 21. As shown in FIG. 1, this fixed base 22
Extends from the first station I to the fifth station V.

A bracket 23 is fixed to the upper surface of the center of the elevating base 21, and the lower end of the ball screw shaft 24 is rotatably supported by the bracket 23. The fixed base 22 is provided with a ball screw bearing 25.
A ball screw shaft 24 is screwed onto the. Ball screw shaft 2
4 is a rotary drive mechanism 2 located above the fixed base 22.
It is rotationally driven in both forward and reverse directions by 4a (see FIG. 1).
A pair of guide shafts 26 are provided on the elevating base 21 (only one is shown in FIG. 3), and the guide shafts 26 are slidably supported by bearings 27 fixed to the fixed base 22. As the ball screw shaft 24 is rotationally driven by the rotational driving force, the elevating base 21 is vertically moved. As shown in FIG. 3, the lifting base 21 includes a support plate 31.
Is provided. As shown in FIG. 4, a pair of support plates 31 are provided at intervals in the transfer direction of the box body 1. In addition, the pair of support plates 31, 31 are connected to the first station I.
Two sets are provided on both sides of FIG. 3 so as to sandwich the box body 1 located at.

Adsorption mechanism bases 32 and 32 are provided outside the support plates 31 and 31, respectively.
Cylinder mechanisms 34, 34 are mounted on 2, 32. A suction plate 33 is provided at the tip of the advancing / retreating rod 34a of the cylinder mechanism 34. This suction board 33,3
Reference numeral 3 is for sucking air, and the suction edge 33 sucks the opening edge portion 5a of the bag body 5. The support plate 31,
Bearings 35, 35 are respectively held in the lower part of 31, and a pawl shaft 36 is rotatably supported by the bearings 35, 35. Claw brackets 37, 37 are fixed to both ends of the claw shaft 36, and the first holding claw 3 is attached to each claw bracket 37.
8 is fixed. As shown in FIG. 4, a sprocket 39 is fixed to the middle portion of the pawl shaft 36. Claw shaft 36
An intermediate shaft 41 is provided above the intermediate shaft 41, and the intermediate shaft 41 is rotatably supported by bearings 40, 40 held by the support plates 31, 31.

A sprocket 42 is fixed to the intermediate shaft 41, and a chain 43 is hung on the sprocket 42 and the sprocket 39. A link 44 is fixed to the intermediate shaft 41. As shown in FIG. 3, the support plate 31
An upper end of a cylinder mechanism 47 is supported by a shaft 48. A connecting member 46 is fixed to the tip of the advancing / retreating rod 47a of the cylinder mechanism 47, and the connecting member 46 and the link 44 are connected by a pin 45. When the advancing / retreating rod 47a of the cylinder mechanism 47 is pulled upward, the link 44 is driven counterclockwise in FIG. 3, and this rotational driving force is applied to the pawl shaft 36 via the sprocket 42, the chain 43, and the sprocket 39. This is transmitted, and the first holding claw 38 is driven counterclockwise in FIGS. 3 and 5. The cylinder mechanism 47 operates in two stages. First, the first stage operation causes the first holding claw 38 to rotate from the initial position shown in (i) in FIG. 3 to the angle shown in (ii). Next, the first holding claw 38 is moved to (i
It rotates from the angle of i) to the downward angle shown by (v) in FIG.

As shown in FIG. 4, floating brackets 51 are provided at both ends of the pawl shaft 36. The floating bracket 51 is sandwiched between the retaining member 53 fixed to the pawl shaft 36 and the pawl bracket 37. The floating bracket 51 can freely rotate with respect to the pawl shaft 36 by the sleeve 52 held at the center thereof. The second holding claw 54 is fixed to the floating bracket 51. This second holding claw 54
The elastic pad 55 is provided on the surface of the
Is affixed. A rotary actuator 56 is held on the support plate 31, and the rotary actuator 5
A sprocket 57 is fixed to the output shaft of No. 6. A part of the floating bracket 51 is a sprocket part 51a, and a chain 58 is hung between the sprocket 57 and the sprocket part 51a. The power of the rotary actuator 56 causes the second holding claw 54 to move to the first
It is adapted to rotate independently of the holding claw 38.

In the initial state of the bag edge raising mechanism 20, the first holding claw 38 is in the position (i), and the second holding claw 38 is in the second position.
The holding claw 54 is the first holding claw 38 as shown by the solid line in FIG.
Away from. In this state, the ball screw shaft 24 is rotationally driven, the elevating base 21 is lowered, and a pair of four first holding claws 38 face each other on both sides of the box body 1. In this state, the suction mechanism 33 is moved forward by the cylinder mechanism 34,
When the opening edge portion 5a of the bag body 5 located outside the long lid pieces 3a and 3b of the box body 1 is sucked and the suction plate 33 is further retracted, the opening edge portion 5a and the long lid pieces 3a and 3b are separated from each other. A gap is formed. Next, the first operation of the cylinder mechanism 47 causes the first holding claw 38 to rotate to the position indicated by (ii). When the elevating base 21 is continuously raised in this state, the tip of the first holding claw 38 enters between the long lid pieces 3a and 3b and the opening edge 5a of the bag body 5. At this time, the rotary actuator 56 drives the second holding claw 54 around the claw shaft 36, and the pad 55 of the second holding claw 54 and the first holding claw 38 are driven.
The opening edge 5a of the bag body 5 is gripped by and (state (iii) in FIG. 5). At this point, the suction by the suction disc 33 is released.

When the elevating base 21 continues to rise, the opening edge portion 5a held by the holding claws 38 and 54 is lifted up, but the holding claws 38 and 54 are located at the positions shown by (iv) in FIG. 5, for example. Cylinder mechanism 47
By the action of the second stage operation of and the action of the rotary actuator 56, both holding claws 38 and 54 rotate together in the counterclockwise direction,
The holding claw 3 is moved to the position shown in (v) in FIG.
The holding ends at 8 and 54 point downwards. During this time, the opening edge 5a of the bag body 5 is removed from the outside of the long lid pieces 3a, 3b and the short lid pieces 4a, 4b by the four sets of holding claws 38, 54, and
As shown in FIG. 1, the opening edge 5a is directed upward. Then, the power of the rotary actuator 56 separates the second holding claw 54 from the first holding claw 38, and the opening edge 5a of the bag body 5 is opened.

Incidentally, until the pulling up of the opening edge portion 5a of the bag body 5 is completed, the second station I is until then.
The four transfer claws 18b that were in I are the first
After moving to the station I, the box 1 of the first station I is held by the transfer claw 18b as shown in FIG. As shown in FIG. 11, the set of four transfer claws 18c that reciprocate between the second station II and the first station I are directed upward when the box 1 is held horizontally. An air injection mechanism for injecting the air E is provided. This air jetting mechanism jets air E upward along the outer surface of the box body 2 and the outer surfaces of the short lid pieces 4a, 4b. By this air injection, an upward air flow is formed along the outer surface of the bag body 5 which is released from the holding of the holding claws 38 and 54. Due to the upward air flow along the outer surface of the bag body 5, the opening edge portion 5a of the bag body 5 is maintained in an open state.

While the box 1 is transferred from the first station I to the second station II by the transfer claws 18b, the air E is continuously jetted from the transfer claws 18b, and the opening edge 5a of the bag body 5 in the free state is removed. Move to the second station II while maintaining the open state. Second
In the station II, the processing operation shown in FIGS. 12 to 15 is performed. This processing operation includes pressing the opening edge portion 5a of the bag body 5 to a flat state, sealing the opening edge portion 5a, and degassing the inside of the bag body 5.

FIG. 6 shows a mechanism provided in the second station II. In FIG. 6, the moving direction of the box 1 is leftward in the drawing. 7 is a side view taken along the arrow VII in FIG. 6, and in FIG. 7, the transfer direction of the box 1 is a direction orthogonal to the paper surface. In the second station II, as shown in FIG. 7, U-shaped holding plates 95, 95 for holding the box body 2 of the box 1 from both sides across the transport path are provided, and the holding plates 95, 95 are provided. Is driven back and forth by the cylinder mechanism 96.
By moving the holding plates 95, 95 forward, the box body 1 is held at the second station II, and the transfer claw 18b is held.
When the box 1 leaves the box 1 and returns to the first station I, the box 1 is held so as not to move. Box 1 stopped again
A pair of insertion arms 61, 61 is provided above. As shown in FIG. 6, the upper ends of the insertion arms 61, 61 are attached to the supporting bases 63, 63 located above the shafts 6 and 6.
It is rotatably supported by 2, 62. Further, two concave portions 61a are formed at the outer end portions of both insertion arms 61, 61, respectively.

Insertion arms 61 and 6 are attached to the shafts 62 and 62, respectively.
1, the upper end of 1 is fixed, and the shafts 62, 62 have support bases 63,
The bearing 63 is rotatably supported by the bearing 63. Links 64, 64 are fixed to the respective shafts 62, 62, and both links 64, 64 are connected by a connecting rod 65. A drive link 66 is attached to the shaft 62 on the left side in FIG.
Is fixed. An upper end of a cylinder mechanism 67 is supported on a support base 63 on the left side of the drawing, and a connecting member 67b at the tip of an advancing / retreating rod 67a of the cylinder mechanism 67 is connected to the drive link 66 by a pin 68. When the advancing / retreating rod 67a of the cylinder mechanism 67 is pulled upward, the pair of insertion arms 61 come to the position shown by the chain line in FIG. When the advancing / retreating rod 67a advances downward, the pair of insertion arms 61, 61 respectively rotate to the positions shown by solid lines. At this time, as shown in FIG. 12, the insertion arms 61,
The opening edge 5a of the bag body 5 is pulled flat by the outward end portion of the bag 61.

Sealing / degassing mechanisms 70, 70 shown in FIG.
Are arranged. The respective seal / deaeration mechanisms 70 and 70 have symmetrical shapes, and in FIG. 7, only the right mechanism is shown in detail. An oscillating base 71 is provided in each of the sealing / degassing mechanisms 70, 70. This swing base 7
A pair of leg portions 72, 72 are fixed to the lower surface of 1,
The leg portions 72, 72 are connected to the tips of the drive links 73, 73 by pins 74, 74. Drive link 73,
Support shafts 75, 75 are fixed to the base portion of 73, and the support shafts 75, 75 are rotatably supported by a fixed base (not shown). The support shafts 75, 75 have driven gears 76, 76. It is fixed. A drive shaft 78 is rotatably supported by a support base (not shown).
The drive gear 77 fixed to the two driven gears 76, 76.
Is meshing with.

The drive shaft 78 is driven by a small angle by a cylinder mechanism or the like. The turning force at this time is the drive gear 7
The driven gears 76, 76 are decelerated and transmitted from 7 to drive the drive links 73, 73 by approximately 90 degrees. As a result, the swing base 71 rotates from the position shown by the chain line in FIG. 7 to the position shown by the solid line. Both swing bases 71, 7
Cylinder mechanisms 81, 81 are mounted on the lower surface of 1. A clamp / sealing plate 82 is fixed to the tip of the advancing / retreating rod 81a of the cylinder mechanism 81. The clamp / seal plates 82, 82 which are symmetrically opposed to each other are driven by the cylinder mechanisms 81, 81 in a direction approaching each other from the position shown by the solid line in FIG.

Clamp / seal plates 82, 82
Is a plate that is long in the direction orthogonal to the paper surface of FIG. 7, and extends to the outward end portion of the insertion arm 61 in the solid line state of FIG. A total of four clamp members 83 are provided at both ends of each seal plate 82 in the longitudinal direction, and each clamp member 83 is biased in the protruding direction by a spring 84. Further, each clamp member 83 is provided with the recess 61a formed at the outer end of the insertion arm 61.
The bag body 5 that enters the inside and is flat in the recess 61a
The opening edge 5a can be clamped from both sides. A seal bar 85 is provided between the upper and lower clamp members 83. The seal bar 85 is long in the left and right in FIG. A clamp / seal plate 82 is formed by the cylinder mechanisms 81 and 81.
When and 82 approach each other, both ends of the opening edge portion 5a of the bag body are first clamped by the clamp member 83, and immediately after that, the insertion arms 61, 61 come out of the bag body 5. Following this, the seal bar 85 advances to a position where it abuts against the opening edge portion 5a, the opening edge portion 5a of the bag body 5 in a flat state is sandwiched by the seal bars 85, 85, and the opening edge portion 5a is sealed and sealed by the impulse seal. It

The leg portion 7 of the swing base 71 on the right side of FIG.
2 is provided with a holding plate 87. When the swing base 71 is rotated from the position indicated by the chain line to the position indicated by the solid line by the rotation of the gear 77, the holding plate 87 causes one long lid piece 3b to move in the closing direction. Can be suppressed. A holding plate 88 is also provided on the leg portion 72 of the swing base 71 on the left side of the drawing. When the swing base 71 on the left side of the drawing is rotated to the position indicated by the solid line, the holding plate 8
The other long lid piece 3a is pressed by 8 in the closing direction (see FIG. 13). However, a diagonally extending support member 88a is provided at the base end of the holding plate 88 on the left side of the drawing, and a triangular space (b) is provided between the support member 88a and the long lid piece 3a.
Is formed. The transfer shafts 16 and 16 of the transfer mechanism 15 include a second station II and a third station II.
A set of four transfer claws 18c that reciprocate between the station III and the station III is provided, but as shown in FIG. 15, one transfer shaft 16 is located behind the one set of transfer claws 18c. Bracket 9
1 is fixed. The bracket 91 is slidably guided by the pair of guide shafts 92, 92 and reciprocates with the transfer shaft 16 at the stroke L.

A support member 9 is provided on the bracket 91.
An air pipe 93 is supported by 4. Each transfer shaft 16, 16 moves in the direction of the arrow in FIG.
When the box body 1 located at the second station II is held by the four transfer claws 18c, the air pipe 93 moved in the arrow direction together with the transfer claws 18c is inserted into the triangular space (b). It Therefore, even if the rocking bases 71, 71 on both sides shown in FIG. 7 are raised to the position of the chain line and the holding plates 87 and 88 are separated from the long-lid pieces 3a, 3b, one long-lid piece 3a has the above-mentioned air pressure. The pipe 93 remains closed. Then, the box body 1 is transferred to the third station III by the transfer claw 18c together with the air pipe 93. When the pressing plates 87 and 88 are separated from each other, the long lid piece 3b which is not pressed by the air pipe 93 is opened slightly upward as shown in FIG. 16 by its elasticity.
Air E injection holes are formed on the sides of the air pipe 93, and the air E is ejected laterally along the long lid piece 3a. Due to this, the bag body 5 that is flat and has completed sealing
The opening edge portion 5a is tilted downward in the long lid piece 3b.

Next, in the third station III, as shown in FIG. 2, a pair of U-shaped holding plates 101, 101 facing each other with the conveying path interposed therebetween are provided.
1, 101 are configured to be driven back and forth by cylinder mechanisms 102, 102. When the box body 1 is transferred to the third station III by the set of four transfer claws 18c shown in FIG. 15, the box body 1 is held by the holding plate 101 as shown in FIG. When the box body 1 is carried to the third station III, the transfer claw 18c comes off the box body 1 and returns to the second station II,
At this time, the air pipe 93 slides on the long lid piece 3a and returns in the direction shown by the arrow in FIG. 16. At this time, since the box body 1 is held by the holding plate 101, this The box 1 does not move, and the air pipe 9
3 is removed from the long lid piece 3a. Next, the box body 1 located at the third station III is carried to the fourth station IV by the transfer claws 18d, which are a set of four in the subsequent stage. In the fourth station IV, as shown in FIGS. 17 to 19, the opening edge portion 5a of the flat bag body 5 is pushed in while the long lid pieces 3a and 3b are opened.

FIG. 8 is a front view showing the fourth station IV and the fifth station V. In FIG. 8, the transfer direction of the box 1 is leftward in the drawing. At Station IV,
A table 104 supported by a plurality of columns 103 is provided on both sides of the conveyance path, and a U-shaped holding plate 10 is provided by a cylinder mechanism 105 installed on the table 104.
6 moves forward and backward. When the holding plate 106 is moved forward by each cylinder mechanism 105, as shown in FIG.
As shown in, the upper part of the box main body 2 has a pair of holding plates 106,
Held from both sides by 106. However, the above holding plate 1
A pressing pad 106a is provided at the center of 06, 106. By pressing the upper side plate of the box body 2 in the direction of the arrow in FIG. 17 by this pressing pad 106a, both long lid pieces 3a, 3b are erected. Can be raised.

As shown in FIG. 8, an upward support 107 is provided from the base 104, and a shaft 108 is rotatably supported by a bearing 107a fixed to the upper end of the support 107. The shaft 108 extends across both the fourth station IV and the fifth station V. FIG. 9 shows the fifth station V. As shown in FIG. 9, the shafts 108 are arranged in a pair at upper positions on both sides of the conveyance path. Links 111, 111 are fixed to the respective shafts 108, 108, and drive rods 112, 111 are fixed to the links 111, 111.
112 are connected. Two drive rods 11 are provided by a cylinder mechanism 112a (see FIG. 1) arranged above.
2 and 112 are synchronously moved up and down, whereby the respective shafts 108 and 108 are rotationally driven at an angle of approximately 90 degrees.

At the fourth station IV, the shaft 10 is
Two expansion claws 109a and 109a are fixed to each of 8 and 108. As shown in FIG. 18, the shafts 108, 10
8 is driven, so that two expanding claws 109 are provided.
The long lid pieces 3a and 3b are slightly opened to the outside by a and 109a. Above the fourth station IV,
A pair of pushing plates 113, 113 are provided. As shown in FIG. 18, the lower edges 113a and 113a of the push-in plates 113 and 113 are substantially V-shaped so as to match the upper surface shape of the contents 6 in the box body 1. The pair of pushing plates 113, 113 are fixed to the lower surface of the elevating plate 114, and the elevating plate 114 is driven up and down by the cylinder mechanism 115. When the elevating plate 114 descends, as shown in FIG.
As shown in FIG. 9, the pushing plates 113, 113 enter the inside of the box body 2 along the inside of the short lid pieces 4a, 4b of the box body 1, and the opening edge portion 5a of the flat bag body 5 in which the sealing is completed is It is pushed between the inner surface of the box and the bag 5. The box 1 after the above processing is performed at the fourth station IV is transferred to the fifth station V by the transfer claw 18e.

As shown in FIG. 8, a table 122 supported by columns 121 is provided on both sides of the conveyance path in the fifth station V as well, and a cylinder mechanism 123 provided on the table 122 provides a U-shape. The holding plate 124 is shaped like a back and forth. As shown in FIG. 20, when the box 1 is transferred to the fifth station V, the holding plate 124 holds the box 1 from both sides. A support 125 is provided on the base 122, and the bearing 12 above the support 125 is provided.
The shaft 108 is rotatably supported by 5a.
At the fifth station V, a total of four on each shaft 108
The individual expansion claws 109b are provided, and the long lid piece 3 is synchronized with the fourth station IV by the expansion claws 109b.
a and 3b are opened slightly outward.

At the fifth station V, two arms in total, four arms 131, 1 are provided at intervals in the transfer direction of the box 1.
31 is provided. Bending pads 131a, 131a are attached to the lower ends of the arms 131, 131. The upper ends of the arms 131 and 131 are respectively the shaft 13
The shafts 132 and 132 are rotatably supported by bearings on a support base 134 located above. Gears 133 and 133 meshing with each other are fixed to the shafts 132 and 132, respectively.

A drive link 135 is attached to the shaft 132 on the right side of the drawing.
Is fixed, and the tip of the advancing / retreating rod 137 of the cylinder mechanism 136 supported by the support base 134 has the drive link 135
Are linked to. When the advancing / retreating rod 137 is advancing, the arms 131 and 131 are in a solid line state, and the bending pads 131a and 131a are located above. When the advancing / retreating rod 137 is pulled, the arms 131 and 131 rotate, the habit pads 131a, 131a move in the direction indicated by the chain line, and the short lid pieces 4a, 4b are folded inward as shown in FIG. . As a result, the short lid pieces 4a and 4b are formed so as to be located inside the long lid pieces 3a and 3b. The box body 1 formed as described above is held by the transfer claw 18f at the final stage and discharged, and the long lid pieces 3a and 3b are fixed by the automatic sealing device at the next stage, so that the box body 1 is formed. It is sealed.

Next, a series of operations by the above device will be described. As shown in FIG. 10, the box body 1 at the carry-in standby position (a) of the carry-in section 10 has an opening edge portion 5a of the bag body 5, as shown in FIG.
However, the long lid pieces 3a and 3b and the short lid pieces 4a and 4b are folded back to the outside, and the bag body 5 is filled with the content 6. The first provided on the transfer mechanism 15
When the box body 1 is transferred to the first station I by the transfer claws 18a of the steps, the first holding claws 38 lowered to the left and right positions of the box body 1 are moved by the first step operation of the cylinder mechanism 47, as shown in FIG. ) It becomes the state shown. While the elevating base 21 is rising, the first holding claw 38 is inserted between the opening edge 5a of the bag body 5 sucked and pulled by the suction plate 33 and the long lid pieces 3a and 3b. The opening edge portion 5a is held by the first holding claw 38 and the second holding claw 54. While the elevating base 21 is further raised, the holding claws 38 and 54 rotate counterclockwise between the position (iv) and the position (v) in FIG. Opening edge 5 gripped with
a is removed from the long lid pieces 3a and 3b and the short lid pieces 4a and 4b, and the opening of the bag body 5 faces upward. And the holding claw 38
The holding by and 54 is released.

At this time, as shown in FIG. 11, the rising air E is jetted from the transfer claw 18b of the second stage holding the box body 1, and the opening edge portion 5a of the bag body 5 in the free state.
Is kept open and facing upwards. After the box 1 is transferred to the second station II by the transfer claw 18b, the holding plate 95 is advanced by the cylinder mechanism 96 shown in FIG. 7, and the upper part of the box body 2 of the box 1 is moved by the pair of holding plates 95. Retained. Then, the transfer claw 18b comes off the box body 1 and returns to the first station I.
In the second station II, first, by the cylinder mechanism 67 shown in FIG. 6, the pair of insertion arms 61 and 61 pivot from the state shown by the chain line to the state shown by the solid line, and the insertion arms 61,
The tip portion of 61 enters the opening edge portion 5a of the bag body 5, and as shown in FIG. 12, the opening edge portion 5a is pulled by the tip portions of the insertion arms 61 and 61 so as to be in a flat state.

Next, the drive gear 77 shown in FIG. 7 is driven clockwise by a predetermined angle, and the driven gears 76, 76 are driven counterclockwise. As a result, the drive links 73, 7
3 rotates about 90 degrees counterclockwise, and the swing base 71 moves from the position shown by the chain line in FIG. 7 to the position shown by the solid line. This operation is performed by the left and right seal / degassing mechanisms 70, 7 in FIG.
0 at the same time. The above swing bases 71, 71
13, the holding plate 87 on one side presses the long lid piece 3b, and the holding plate 88 on the other side presses the long lid piece 3a. When the long lid pieces 3a and 3b are pressed in the closing direction, the upper portions of the bag body 5 are pushed by the long lid pieces 3a and 3b, and the air above the contents 6 in the bag body 5 is discharged from the opening edge portion 5a. It is pulled out and degassing is completed.

When the swing bases 71, 71 move to the position shown by the solid line in FIG. 7, the clamp / seal plate 82
And 82 face each other on both sides of the opening edge 5a. When the cylinder mechanisms 81 and 81 operate in this state, the clamp / sealing plates 82, 82 advance to each other, and the clamp member 83 first enters the recess 61a at the outward end portion of the insertion arms 61, 61, and the clamp member 83 Thus, both ends of the opening edge portion 5a of the bag body 5 are clamped at four places. This state is shown in FIG. Immediately after that, the cylinder mechanism 67 shown in FIG.
The insertion arms 61, 61 are driven by the
The tip portions of 1, 61 are pulled out from the inside of the opening edge portion 5a. Immediately after that, when the clamp / seal plate 82 further advances,
The seal bars 85 and 85 sandwich the opening edge 5a of the bag body 5 between the vertical intervals of the clamp member 83. Then, the opening edge portion 5a is sealed by the seal bars 85, 85, the seal line S is formed, and the bag body 5 is sealed. If it is not necessary to seal the bag body 5, the seal bars 85, 85
Thus, the opening edge portion 5a is merely pressed to the flat state, and the sealing operation is not performed.

At this time, as shown in FIG. 15, the holding of the box 1 is completed by the transfer claws 18c of the third stage, and the air pipe 93 moved together with the transfer claws 18c and the supporting member 88a are long. It enters between the lid piece 3a. After the box body 1 is held by the transfer pawl 18c, the drive gear 77 shown in FIG. 7 rotates counterclockwise, the swing base 71 moves from the position shown by the solid line to the position shown by the chain line, and both holding plates are held. 87 and 88 separate from the long lid pieces 3a and 3b. However, one long lid piece 3a is an air pipe 93
The long lid piece 3b on the other side is slightly opened due to its elasticity. At this time, the air E is jetted laterally from the air pipe 93 along the long lid piece 3a, and the opening edge 5a where the sealing is completed is tilted to the lower side of the long lid piece 3b. The box body 1 is held by the transfer claws 18c and moves to the third station III. At this time, the air pipe 93 supported by the transfer shaft 16 is provided.
Also moves to the third station III.

At the third station III, as shown in FIG. 16, the pair of holding plates 101, 101 move forward to move the box 1
Is retained. After this holding is completed, the transfer claw 18c separates from the box body and returns to the second station II. At this time, the air pipe 93 slides on the long lid piece 3a and moves toward the second station II. Long lid piece 3a
Get out of. Box 1 by the next transfer claw 18d
Is transferred from the third station III to the fourth station IV. At this time, the opening edge portion 5a of the bag body 5 is shown in FIG.
As shown in FIG. 6, the long lid piece 3b is still lying down.

In the fourth station IV, the holding plate 106 is first moved forward by the cylinder mechanism 105 to move the holding plate 106.
The upper part of the side surface of the box body 2 is pushed by the pressing pad 106a at the center of the, and the long lid pieces 3a and 3b are raised. Next, the four expansion claws 109a located above the box 1 rotate in the expansion direction, and the long lid pieces 3a and 3b are slightly opened to the outside, as shown in FIG. Then, the push-in plates 113, 113 are lowered by the cylinder mechanism 115, and as shown in FIG. 19, both ends of the tilted opening edge portion 5 a are pushed between the inner surface of the box body 1 and the bag body 5. Push-in plates 113, 11
3 rises, and when the expanding claw 109a and the holding plate 106 separate from the box body 1, the transfer claw 18e causes the box body 1 to move.
Are transferred from the fourth station IV to the fifth station V.

At the fifth station V, the box body 1 is held by the holding plates 124, 124. Then, the long-lid pieces 3a and 3b are opened slightly outward by the expanding claw 109b located above. Next, the arms 131 and 131 are driven by the cylinder mechanism 136 shown in FIG.
The short lid pieces 4a and 4b are folded in the closing direction by 31a, and a crease is imparted. Thus, the box body 1 in which the opening edge portion 5a of the bag body 5 is housed in the box body 1 and the short lid pieces 4a and 4b are placed inside the long lid pieces 3a and 3b,
It is carried out by the transfer claw 18f at the final stage.

[0048]

As described above, according to the invention of claim 1,
The work of removing the opening edge of the bag from the lid and the operation of putting the opening edge of the bag into the box can be automated. In particular, since the work of removing the opening edge portion of the bag body from the lid piece can be automated, the manual work conventionally required is completely unnecessary.

According to the second aspect of the present invention, since the holding claw for holding the opening edge portion of the bag body is raised and rotated, the opening edge portion of the bag body can be removed from the lid piece without difficulty. become.

According to the third aspect of the invention, after the pulling up of the opening edge of the bag body is completed, air is jetted upward along the outer surface of the box body, and this air causes the opening edge portion of the bag body to face upward. Maintained at. Therefore, the operation for pressing the opening edge portion flatly can be surely performed next.

According to the fourth aspect of the present invention, when the opening edge of the bag is pulled up and the opening edge is pressed at different stations, the transfer mechanism moves the box between the stations. Thus, the air injection is performed. Therefore, in the box while moving between stations,
The bag is always kept open at the top.

[Brief description of drawings]

FIG. 1 is a front view showing the overall structure of a box enclosure processing device,

FIG. 2 is a plan view showing the overall structure of a box enclosure processing device;

FIG. 3 is a side view of the first station as seen from a direction along a box transfer direction;

4 is a view on arrow IV of FIG. 3,

FIG. 5 is an explanatory view of the processing operation of the first station,

FIG. 6 is a front view of the second station as seen from a direction intersecting the box transfer direction;

FIG. 7 is a side view taken along the arrow VII of FIG.

FIG. 8 is a partial front view of the fourth station and the fifth station as seen from a direction intersecting the box transfer direction;

9 is a side view taken along the line IX in FIG.

FIG. 10 is a perspective view showing the box body at the loading standby position,

FIG. 11 is a perspective view of the box body showing a state in which the opening edge portion of the bag body is pulled up at the first station,

FIG. 12 is a perspective view of the box body showing a state where the opening edge portion of the bag body is flatly drawn at the second station,

FIG. 13 is a perspective view of the box showing a state where the long lid piece is pushed at the second station,

FIG. 14 is a perspective view of the box body showing a state in which the opening edge portion of the bag body is clamped at the second station,

FIG. 15 is a perspective view of the box body showing a state in which the opening edge portion of the bag body is sealed at the second station,

FIG. 16 is a perspective view showing a state where the box body is held at the third station,

FIG. 17 is a perspective view showing a state in which the long lid piece of the box body is erected at the fourth station,

FIG. 18 is a perspective view of the box showing a state in which the long lid piece is opened at the fourth station,

FIG. 19 is a perspective view showing a state where the opening edge portion of the bag body is pushed into the box body at the fourth station,

FIG. 20 is a perspective view of the box body showing a state in which the short lid piece is bent at the fifth station,

FIG. 21 is a perspective view showing a state where the contents are filled in the box body,

[Explanation of reference numerals] 1 box body 2 box body 3a, 3b long lid piece 4a, 4b short lid piece 5 bag body 5a opening edge portion 10 carry-in portion (a) carry-in standby position 15 transfer mechanism 16 transfer mechanism 16 transfer shaft 18a , 18b, ... Transfer claw 20 Bag edge raising mechanism 21 Elevating base 24 Elevating ball screw shaft 31 Support plate 33 Suction board 38, 54 Holding claw 47 Cylinder mechanism serving as a holding claw rotation mechanism 56 Holding claw opening and closing mechanism Rotary actuator 61 Insert arm 67 Cylinder mechanism for driving insert arm 70 Sealing / degassing mechanism 71 Swing base 73 Drive link 76 Driven gear 77 Drive gear 83 Clamp member 85 Seal bar 95 Holding plate 106 Holding plates 109a, 109b Expanding Claw 113 Push plate 115 Push plate lifter Da mechanism 124 holding plate 131 arms 131a habit worn pads 136 arms drive cylinder mechanisms

Claims (4)

[Claims] 1. A bag body is inserted into a box body in which lid pieces are provided at four edge portions of a rectangular opening, and the opening edge portions of the bag body are covered with the lid piece standing up. A device for enclosing a box body, which is folded back to the outside of the piece and is filled with contents inside the bag body, wherein the opening edge of the bag body is pulled up above the lid piece. A body edge lifting mechanism, an edge pressing mechanism that presses the opening edge of the bag flatly, and a bag pressing mechanism that presses both edges of the flattened bag along the inner surface of the box are provided. A box enclosure processing device characterized in that 2. The bag edge raising mechanism includes a pair of holding claws for holding the opening edge of the bag, a claw opening / closing mechanism for opening and closing the holding claw, and a holding claw for holding the opening edge of the bag. 2. A raising drive mechanism for raising the holding mechanism and a turning drive mechanism for turning the holding claw which is being raised by the raising driving mechanism so that its holding end faces downward. Box enclosure processing device. 3. The outer surface of the box body is kept on the outer surface of the box until the edge pressing mechanism starts the pressing operation of the edge of the bag body after the bag edge lifting mechanism completes the lifting of the opening edge of the bag body. 2. The box encapsulation processing apparatus according to claim 1, further comprising an air injecting mechanism that injects air upward to maintain the opening edge portion of the bag body in an upward state. 4. The bag edge raising mechanism and the edge pressing mechanism are arranged in different stations, and the transfer mechanism for moving the box between the stations is provided with an air injection mechanism. Box enclosure processing device.