JPH0620207U - Bag closure device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent wrinkles from occurring on the flap of the bag and to ensure a good seal. [Structure] On a conveyor 2 that conveys a bag B having a sealing flap F with the flap F facing downward,
By the flap folding member 8 which moves up and down by the cylinder 9 and rotates by the rotary actuator 10 on the side of the conveyor, the flap F is bent upward and then downwardly bent to close the bag mouth. It is a sealing device 1 for a closed bag. The flap folding member 8 is driven by a reciprocating cylinder 11 on the conveyor 2 toward the center of the conveyor width direction and additionally provided with a suction means, and the flap folding member 8 reciprocates in the conveyor width direction facing the flap folding member 8. Tidying board 12
And the flap F is pressed and stuck in a state where the upper side near the bag mouth is pressed to flatten the enclosed object.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bag closure device.

[0002]

[Prior art]

 Generally, as shown in FIGS. 5 and 6, the bag body B is provided with a sealing flap F having one sheet surface projecting beyond the opening end of the other sheet surface, and the flap F has a double-sided adhesive tape C. Also, there is a thin release material P attached to paper or a synthetic resin film, or although not shown, a pressure-sensitive adhesive is applied to the flap and a release material is attached to it. .

Conventionally, when an article is inserted into the bag B and then sealed, the flap F is moved upward by a flap folding member that moves up and down on the side of the conveyor on a conveyor that conveys the flap F downward. There is known a sealing device in which the bag is closed and then closed by closing the bag by rotating the bag toward the bag and bending it (see Japanese Utility Model Publication No. 53-27666).

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional technique, since the article to be inserted into the bag is not flat but has irregularities, there is a problem that folding folds occur in the flap and the sealed state deteriorates. The present invention has been made in view of the above situation, and an object of the present invention is to provide a bag sealing device that does not cause folding creases on the flaps of the bag and provides a good sealing state. There is.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention takes the following technical means. That is, according to the present invention, on a conveyor that conveys a bag having a sealing flap so that the flap is on the lower side, the flap is folded upward by a flap folding member that moves up and down on the side of the conveyor. In the bag closing device in which the bag is closed by closing the bag mouth by rotating it toward the bag side, the flap folding member is reciprocally rotatable in the flap folding direction and reciprocates in the width direction on the conveyor. It is characterized by being movable.

Further, the present invention is characterized in that the flap folding member is provided with a suction means, and a flap folding tidying plate which is opposed to the flap folding member and reciprocates in the width direction of the conveyor is provided.

[0007]

[Action]

 According to the present invention, the bag in which the material to be encapsulated is put on the conveyor is conveyed in a state where the sealing flap is on the lower side, the release material is on the upper side, and the flap projects from the conveyor side end. After the release material was peeled off, the bag mouth was lightly pressed by the flap folding tidying plate, the flap folding member adsorbed the flap and lifted slightly and then rotated to the conveyor side, and further toward the center of the conveyor width direction. By sliding laterally, the flap is pressed against the other surface side of the bag body. At this time, since the flap folding ordering plate retreats following the lateral movement of the flap folding member, and the flaps are pressed and adhered while being sucked by the flap folding member, wrinkles do not occur in the flaps.

In this way, when the flap closing is completed, the flap folding member returns to the side end in the width direction of the conveyor, rotates to return to the old shape, and descends to return to the standby position. On the other hand, the bag body that has been closed by the flap is pressed by the flap press to ensure a good seal state.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic plan view of a bag-sealing equipment provided with a sealing device 1 according to the present invention, which includes an intermittent drive conveyor 2 for horizontally transferring a bag B in which an object W to be enclosed is inserted, and The bag receiving table 3 provided on the carry-in end of the conveyor 2, the pushing means 4 for pushing the bag B on the table 3 onto the conveyor 2, the releasing material removing means 5 following the table 3, and the sealing device. 1 and flap press means 6

As shown in FIG. 2 and FIG. 3, the sealing device 1 includes a frame 7 of the conveyor 2, a vertical direction, a rotation and a conveyor width on one side of the conveyor 2 (the flap F protruding side of the bag body B). Flap folding member 8 arranged so as to be reciprocable in the direction, a vertical drive cylinder 9 of the member 8, a rotary drive rotary actuator 10 and a reciprocating drive cylinder 11, a flap folding aligning plate 12 and its reciprocating cylinder. Consisting of 13 and.

The flap folding member 8 includes a rectangular flap folding plate 14 arranged parallel to the conveying direction of the conveyor 2 and close to the side edge of the conveyor 2, a suction box 15 fixed to the lower surface thereof, and a flap folding member 15. A member holding body 16, supporting arms 19 and 20 having a base end fixed to the holding body 16 and a suction box 15 attached to the front end via a rotating shaft 17 and 18, and a support fixed to the lower surface of the conveyor frame 7. The bracket 21 and the carriage 22 are included.

A large number of suction holes 23 communicating with the suction box 15 are provided in the plate 14, and a vacuum suction pump (not shown) is connected to the suction box 15 to constitute a flap suction means. The holding body 16 has a rectangular box shape and is attached to the upper end of the piston rod 24 of the vertical drive cylinder 9, and the horizontal support arms 19 and 20 extending from the holding body 16 to the conveyor 2 side are fixed to the holding body 16. The actuator 10 is attached to one end in the direction.

A timing pulley 26 is fixed to an output shaft 25 of the actuator 10, a timing pulley 27 fixed to one rotating shaft 17 of the flap folding member 8, and a timing belt 28 to the pulley 26. The flap folding plate 14 is adapted to reciprocate about 150 to 160 degrees. A carriage slide guide bar 29 is horizontally attached to the support bracket 21 and parallel to the arms 19 and 20, and a carriage 22 is reciprocally movable in the width direction of the conveyor 2. The vertical drive cylinder 9 is mounted on the carriage 22 in an upward direction, and a guide bar 30 fixed to the lower surface of the flap folding member holder 16 is vertically slidably fitted on the carriage 22. 11 piston rods 31 are connected via a connecting member 32.

The flap folding and organizing plate 12 is for pressing the vicinity of the open end of the bag B so that the upper surface of the enclosed object W inserted in the bag B near the open end is substantially flat. The plate 12 is attached to the outer end of the piston rod 33 of the cylinder 13, and the tip of the plate 12 is inclined downward so that the plate 12 can freely move in and out. A pillar 34, which is located on the opposite side of the support bracket 21, is rotatably mounted at the side end of the conveyor frame 7 so that the pillar 34 can be adjusted in vertical mounting position and is rotatably attached to the upper end of the pillar 34 in a horizontal direction. The arm 36 is fitted and supported so that the mounting position can be adjusted, and the reciprocating cylinder mounting member 37 is fixed to the tip of the arm 36. The bracket 38 fixed to the upper surface of the tip of the cylinder 13 is attached to the mounting member 37. The flap folding and organizing plate 12 is attached via a horizontal pin 39 so that the inclination angle can be adjusted.

On the table 3, a bag body insertion guide 40 is arranged on one side of the bag body B insertion side, and an extruding plate 41 of the extruding means 4 is arranged. The pushing means 4 comprises the pushing plate 41, a pushing cylinder 43 attached to a support bracket 42, and a guide bar 44 slidably supported by the support bracket 42, and the piston rod of the cylinder 43. The outer end 43a and one end of the guide bar 44 are fixed to the push-out plate 41.

The release material peeling means 5 is the same as the one generally used in the related art, and is composed of a peeling claw 45 that can be retracted and retracted, a bag retainer 46, and a release material suction / collection member 47. The release material P (see FIGS. 5 and 6) can be peeled off without breaking the posture of the bag body B containing the inclusion W. The flap press means 6 presses the flap F of the sealed bag body B by a press plate 49 which is vertically moved by a cylinder 48 so that the flap F can be firmly attached to the tip of the flap F.

When the flap F of the bag body B is sealed in the above embodiment, first, when the bag body B in which the inclusions W are inserted is loaded by the bag inserting machine onto the bag body receiving table 3, It is extruded onto the conveyor 2 by the extruding step 4, and when the flap peeling position is reached, the conveyor 2 is stopped and at the same time, the bottom of the bag B is pressed by the bag pressing member 46 and the release material P is peeled by the peeling claw 45. At the same time, it is recovered and removed by the suction recovery member 47.

Next, when the conveyor 2 is started and the bag body B reaches the sealing position, the conveyor 2 stops, and as shown in FIG. 4 (a), first, the flap folding and organizing plate 12 is advanced by the reciprocating cylinder 13. Then, the bag B is pressed on the opening of the bag B to make it tidy, and then, as shown in FIG. 4 (b), the flap folding member 8 starts to move upward by the vertical drive cylinder 9 and the flap F is folded by the suction means. When the flap F is bent upward by being attracted to the flap 14 and the flap folding plate 14 reaches a predetermined height, the rotation of the rotary actuator 10 rotates the flap folding plate 14 together with the suction box 15 to cause the flap folding plate 14 to rotate as shown in FIG. As shown in (c), the flap F is bent downwards from above, and the flap folding plate 14 stops rising, and the reciprocating drive cylinder 11 causes the flap folding plate 14 to move to the corner as shown in FIG. 4 (d). It starts YokoUtsuri dynamic while flaps F and the sliding toward the widthwise center of the bare 2.

When the flap folding plate 14 is tilted to a predetermined angle, the rotary actuator 10 is stopped, while the flap folding plate 14 is retracted by the reciprocating cylinder 13 before the rotation of the flap folding plate 14 is stopped. Stop at a stand-by position that does not interfere with plate 14. The flap F is pressed by the end of the plate 14 above the opening of the bag B against the suction force of the suction means, and is attached without wrinkles (see FIG. 4 (e)).

In this way, when the bending and attaching of the flap F is completed, the flap folding member 8 returns to the side of the conveyor 2 which is the operation start position by the operation opposite to that described above, and one of the bags is closed. It waits for the cycle to end and the subsequent bag B to stop at the sealing position. The operation control of the flap folding member 8 and the flap folding tidying plate 12 is consistently and automatically performed by the control device by position detection by a stopper, a sensor and the like.

The present invention is not limited to the above embodiment, but can be modified in design as appropriate.

[0022]

[Effect of device]

 As described above, the present invention is designed so that, on a conveyor that conveys a bag having a sealing flap so that the flap is on the lower side, the flap is moved upward by a flap folding member that moves vertically on the side of the conveyor. In a bag closing device which is folded and then rotated toward the bag to fold and close the bag mouth, the flap folding member is reciprocally rotatable in the flap folding direction, and at the same time on the conveyor. Since it is characterized by being able to reciprocate in the width direction, the flap of the bag body can be made to flow horizontally and smoothly and securely, and it can be attached while sliding the flap without causing wrinkles. Therefore, it is possible to significantly improve the sealing work efficiency and further facilitate the connection with the collecting conveyor.

Further, the present invention is characterized in that the flap folding member is provided with an adsorbing means, and a flap folding tidying plate which is opposed to the flap folding member and reciprocates in the conveyor width direction is arranged. , The bag can be pressed and adhered to the bag while the bag opening is flat near the opening and the flap is adsorbed to the flap folding member, and the wrinkles of the flap can be completely prevented. It is possible to obtain a stable sealed state.

[Brief description of drawings]

FIG. 1 is an overall schematic plan view of a bag-sealing facility to which the present invention is applied.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is a plan view with a part of FIG. 2 omitted.

4 (a) to 4 (e) are explanatory views of the sealing operation in the embodiment of the present invention.

FIG. 5 is a plan view of a bag body.

FIG. 6 is a front view of FIG.

[Explanation of symbols]

 1 Sealing device for bag body 2 Conveyor 8 Flap folding member 9 Flap folding member Vertical drive cylinder 10 Flap folding member rotating rotary actuator 11 Flap folding member Reciprocating drive cylinder 12 Flap folding tidyer B Bag body F flap

Claims (2)

[Scope of utility model registration request] 1. On a conveyor that conveys a bag having a sealing flap with the flap on the lower side, the flap is folded upward by a flap folding member that moves up and down on the side of the conveyor. In a bag closing device in which a bag is closed by bending it by rotating it toward the bag, the flap folding member is reciprocally rotatable in the flap bending direction and reciprocally moves in the width direction on a conveyor. A bag-sealing device characterized by being made possible. 2. The flap folding member includes suction means,
2. The bag closing device according to claim 1, further comprising a flap folding and organizing plate which faces the member and reciprocates in the width direction of the conveyor.