JP6902294B1 - Stand bag opening device with zipper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stand bag opening device with a zipper that automatically opens a stand bag with a zipper that can freely close and open the bag mouth. SOLUTION: When a bellows sucker 8 which acts as a spring by raising a suction cup block 18 sucks the lower surface of an opening of a stand bag 5 with a chuck and moves the suction cup block 18 downward by its own weight drop, the bellows sucker 8 chucks. The lower surface of the opening of the stand bag 5 is tilted downward to partially open the opening. The alternate long and short dash line expansion bar 9 descends to the position of the article holder 2, and then advances the solid line expansion bar 9 to the chuck position at the back of the opening of the zippered stand bag 5. Then, when the expansion bar 9 below the expansion bar 9 is lowered, the central portion of the chuck is partially opened, which triggers the drop of the suction cup block 18 by its own weight and the contraction action of the bellows suction cup 8 on the chuck at the same time. It acts to instantly open the entire opening of the stand bag 5 with a zipper. [Selection diagram] Fig. 2

Description

The present invention relates to a stand bag opening device with a zipper that can automatically open a stand bag with a zipper that can freely close and open the bag mouth.

Conventionally, in order to manually pack a zipper bag, an article is inserted into the bag from the stage of releasing the zipper at the bag mouth of the chuck bag supplied in a flatly folded state, and the bag mouth is closed. Training was required to carry out a series of work up to the stage of making it work.
There is known a bagging device capable of reliably and highly efficiently processing an article bagging operation by enabling automation of the article bagging operation (see Patent Document 1).

This known technique includes a set table (6) of a zipper bag (P), an opening means (7) for opening the bag mouth of the zipper bag (P) set on the set table (6), and a bag. The article holding table (2) that holds the article (W) according to the size and the article holding table (2) that is slid into the bag opened by the opening means (7) and then inside the bag. The bagging device (1) has a loading means (3) for discharging the article holding table (2) to the outside of the bag while leaving only the article (W).

In the bagging device (1) of the known technique, the bag mouth is slightly opened by a pair of upper and lower suction cups (20) and (21), and the bag mouth is moved and inserted into a pair of upper and lower insertion pieces (17) and (18). The insertion piece (17) (18) and the pressing piece (17a) (18a) sandwich the bag mouth of the upper piece and the lower piece and expand them vertically to forcibly open the suction cup (20). Since the bag sucked in (21) is moved to the insertion pieces (17) and (18) positions, the opening work may be unstable and opening defects may occur, and a pair of upper and lower insertion pieces (upper and lower insertion pieces) 17) There is also a risk that poor holding of the pressing pieces (17a) and (18a) may occur.

Japanese Patent No. 4963296 Utility Model Registration No. 3185544

An object of the present invention is to provide a stand bag opening device with a zipper that automatically opens a stand bag with a zipper that can freely close and open the bag mouth.

The stand bag opening device with a zipper of the present invention is located on a suction holder that sucks one stand bag with a zipper from a bag stocker and transfers it to a bag opening holding portion position, and a suction holder located on the lower surface of the opening of the stand bag with a zipper. A bellows sucker that works in cooperation with the holder to attract to the underside of the opening and act as a spring to open the opening, and a chuck at the back of the opened opening of the stand bag with a zipper, and open up and down to open the zipper. It consists of a pair of upper and lower expansion bars to be opened.
The bellows suction cups that act as springs are provided in the suction cup block at the tip of the guide rod that is inserted into the holding hole of the guide frame and moves by its own weight, and are arranged in pairs on the left and right at positions below the opening of the stand bag with a chuck.
The expansion bar descends near the article holder by the horizontal movement of the expansion cylinder block and the vertical movement of the expansion cylinder, and then advances to a distance that reaches the chuck at the back of the bag mouth in the center of the opening of the stand bag with a zipper. Then, by opening the expansion bar below the expansion bar downward, the center of the opening of the chuck is partially opened, which triggers the weight of the sucker block and the spring contraction action of the bellows sucker to act on the chuck at the same time. Then, the zipper of the stand bag with the zipper is instantly opened all over.

In the stand bag opening device with a zipper of the present invention, the opening of the stand bag with a zipper is partially opened by the spring pulling action of the bellows sucker by the weight of the sucker block fixing the bellows sucker that sucks the stand bag with a zipper. By advancing the expansion bar to a distance that reaches the chuck at the back of the bag mouth in the center of the opening of the stand bag with a zipper, and opening the expansion bar below the expansion bar downward, the expansion bar and the fixed block The center of the opening of the chuck is partially opened by sandwiching the lower surface of the opening of the stand bag with a zipper, and this triggers the weight of the sucker block and the spring contraction action of the bellows sucker to act on the chuck at the same time to chuck the stand bag with a zipper. Since the entire surface can be opened instantly, the chuck opening work is stable and the chuck opening failure does not occur, and the bagging work of the article can be processed reliably and with high efficiency.

It is an overall schematic side view of the stand bag opening device with a chuck of this invention. It is an enlarged side view of the main part of the stand bag opening device with a zipper of this invention. It is a perspective view of the stand bag with a zipper. It is a front view of the stand bag with a zipper (a) when the expansion bar is inserted, (b) when the zipper starts to open, and (c) when the zipper is fully opened.

An embodiment of the zippered stand bag opening device of the present invention will be described below with reference to the accompanying drawings.
As shown in the overall schematic side view of FIG. 1, the stand bag opening device with a chuck of the present invention has an article in an article holder 2 that slides in and out of the bag opening holding portion 1 at right angles to the traveling direction from the front to the back of the drawing. A large number of article supply conveyors 4 composed of chain conveyors 3 (not shown) and stand bags 5 with chucks arranged flatly on opposite sides of the article supply conveyor 4 with a space between them. The bag stocker 6 for loading sheets is arranged in the upper space between the article supply conveyor 4 and the bag stocker 6, and one stand bag 5 with a chuck is sucked from the bag stocker 6 to the position of the bag opening holding portion 1. A suction holder 7 to be transferred and a bellows sucker 8 located on the lower surface of the opening of the stand bag 5 with a chuck and cooperating with the suction holder 7 to suck on the lower surface of the opening and act as a spring to open the bag mouth. A pair of upper and lower expansion bars 9 that enter the chuck at the back of the opened opening and open vertically to partially open the chuck, and the expansion bar 9 and the bellows sucker located at the bag opening holding portion 1. It is composed of a carry-out conveyor 10 that receives articles from the article holder 2 in the chuck-equipped stand bag 5 that is fully opened by 8 and conveys the chuck-equipped stand bag 5 filled with the articles to the next process.

As shown in the enlarged side view of the main part of FIG. 2, the suction holder 7 includes a suction cylinder block 11 which is moved in parallel to the left and right along a cylinder block guide (not shown) horizontally hung above the machine frame. It is composed of a suction plate 13 fixed via a rod 12 that expands and contracts from the suction cylinder block 11, and a pair of left and right suction pads 14 arranged in front of and behind the suction plate 13.

As shown in the front views of FIGS. 4 (a), 4 (b) and 4 (c), the bellows suction cup 8 having a spring action is inserted into the holding hole 16 of the guide frame 15 and moves by its own weight. As shown in FIG. 2, it is fixed to a suction cup block 18 provided at the tip of the guide rod 17, and is transferred to the bag opening holding portion 1 position at a lower position facing the suction pad 14 on the front side, that is, with a chuck. A pair of left and right is provided at a position below the tip of the opening of the stand bag 5.
The upper surface of the suction cup block 18 is slanted toward the article supply conveyor 4, and therefore the bellows sucker 8 is also slanted and attached, but a stand with a chuck due to expansion and contraction deformation of the bellows sucker 8 acting as a spring. It can be brought into close contact with the lower surface of the bag mouth of the bag 5, and the lower part of the opening of the stand bag 5 with a zipper is fully opened by the weight of the suction cup block 18 and the expansion and contraction deformation of the bellows suction cup 8.
As shown in FIGS. 4 (a), 4 (b) and 4 (c), a push-up piece provided at the tip of the push-up rod 20 of the push-up cylinder 19 arranged below the center of the guide frame 15 between the holding holes 16. 21 can push up the lower surface of the suction cup block 18. Further, a fixing block 22 having a surface rubber is arranged between the bellows suction cups 8.
The suction cup block 18 has a bellows suction cup 8 that can be attracted to the lower surface of the opening of the zippered stand bag 5 by expansion and contraction deformation due to the extension of the push-up cylinder 19, and the holding hole 16 due to the contraction of the push-up cylinder 19. It descends along its own weight. Further, when the free fall due to its own weight is insufficient, a spring may be arranged to forcibly lower the spring.

As shown in FIG. 2, the expansion bar 9 is an expansion cylinder block that is arranged above the article supply conveyor 4 and is moved in parallel to the left and right along an expansion rod 23 that is horizontally hung above the machine frame. An expansion cylinder 26 fixed to the 24 via a cylinder rod 25 is provided, and the expansion cylinder 26 is provided with a pair of upper and lower expansion bars 9 extending toward the opening side of the bag mouth of the stand bag 5 with a chuck, and is provided on the upper side. Is fixed and the lower side can be moved downward and fixed via the cylinder rod 27.
As shown by the solid line from the one-point chain line, the expansion bar 9 is lowered to the vicinity of the article holder 2 by the horizontal movement of the expansion cylinder block 24 and the vertical movement of the expansion cylinder 26, and then the zippered stand bag 5 When the expansion bar 9 below the expansion bar 9 is lowered by advancing to a distance that reaches the chuck at the back of the bag mouth in the center of the opening, the expansion bar 9 and the fixing block 22 cause the chuck-equipped stand bag. The lower surface of the opening 30 of the opening 5 is sandwiched, and the chuck of the stand bag 5 with a zipper is partially opened by a downward movement, and the width of the expansion bar 9 may be narrow.

As shown in FIG. 1, one side of the carry-out conveyor 10 is inclined toward the bag stocker 6 side in the traveling direction, the bottom of the zipper-equipped stand bag 5 is the bag stocker 6 side, and the zipper-equipped stand with a zipper is provided. The opening of the bag 5 is set to the side of the article supply conveyor 4, and the articles filled in the zippered stand bag 5 are conveyed to the next process in an inclined state.

Next, the operation operation of the stand bag opening device with a chuck of the present invention will be described below based on the attached drawings.
As shown in the perspective view of FIG. 3, the stand bag 5 with a zipper has an elliptical bottom 28, is formed so as to be self-supporting by a curved side wall 29, and has a zipper 31 that can be opened and closed at the opening 30.
As shown in FIG. 1, the bottom 28 of the stand bag 5 with a zipper is folded and a large number are horizontally loaded on the bag stocker 6, and a suction holder 7 having a pair of front, rear, left and right suction pads 14 is a bag stocker 6. Horizontally moves to and descends to, the four corners of the uppermost zippered stand bag 5 are attracted by the suction pads 14, rises with the opening 30 side at the top, and moves in parallel to hold the bag opening above the carry-out conveyor 10. Transfer to one position.

As shown in FIG. 4A, at the bag opening holding portion 1 position, the push-up rod 20 is raised by the push-up cylinder 19, and the push-up piece 21 fixed to the push-up rod 20 is lifted. As shown in the above, the suction cup block 18 facing the suction pad 14 on the opening 30 side rises, and the bellows suction cup 8 that acts as a spring fixed to the suction cup block 18 is the opening of the stand bag 5 with a zipper. Suction works in contact with the lower surface of the 30 to open the lower surface of the opening 30 of the stand bag 5 with a zipper diagonally starting from the zipper 31 while contracting the bellows.
When the spring-acting bellows suction cup 8 attracts the lower surface of the opening 30 of the stand bag 5 with a zipper, the push-up cylinder 19 is contracted and the suction cup block 18 is dropped by its own weight, so that the bellows suction cup 8 has a zipper. The lower surface of the opening 30 of the stand bag 5 is tilted downward to maintain the state in which the opening 30 is partially opened. In this state, the chuck 31 of the stand bag 5 with a zipper is still closed and the chuck 31 is not opened.

Next, the bag mouth holding piece 32 shown in FIG. 1 is rotated downward to sandwich and hold the upper surface of the opening 30 of the stand bag 5 with a zipper together with the suction pad 14 as shown in FIG. 4A. The bag mouth holding piece 32 has a bifurcated shape, is rotated so as not to interfere with the expansion bar 9, and presses the front left and right suction pads 14 from below to sandwich the bag mouth holding piece 32.
As shown in FIG. 2, the expansion cylinder 26 is lowered by the expansion cylinder block 24 indicated by the alternate long and short dash line, the expansion bar 9 is lowered to the article holder 2 position, and then the expansion cylinder block 24 is a stand bag with a zipper. The expansion bar 9 is advanced to the position of the chuck 31 at the back of the opening 30 of 5.

Next, as shown in FIG. 4B, the expansion bar 9 below the expansion bar 9 is lowered, and the opening 30 of the zippered stand bag 5 is formed by the expansion bar 9 and the fixed block 22. When the lower surface is sandwiched and the expansion bar 9 is further lowered, the central portion of the chuck 31 is partially opened, which triggers the weight of the sucker block 18 and the contraction action of the bellows sucker 8 to act on the chuck 31 at the same time. , As shown in FIG. 4C, the opening 30 of the stand bag 5 with a zipper is instantly fully opened. On the other hand, the expansion bar 9 is returned to the alternate long and short dash line position shown in FIG.

After that, the article holder 2 is slid into the zippered stand bag 5, the suction of the bellows sucker 8 is stopped, the lower surface of the opening 30 of the zippered stand bag 5 is released, and the zippered stand bag 5 is held. The suction plate 13 is lifted, the lower part of the stand bag 5 with a zipper is engaged with the article holder 2, and in this state, the article of the article holder 2 is extruded into the stand bag 5 with a zipper, and the article holder 2 has the article with a zipper. Leave it in the stand bag 5 and slide it back to the initial position.
When the storage of the article in the zippered stand bag 5 is completed, the bag mouth holding piece 32 is rotated in the reverse direction to return, the suction of the suction pad 14 is stopped, and the filled zippered stand bag 5 is placed on the carry-out conveyor 10. To be transported to the next process.

In this way, the zippered stand bag opening device of the present invention bellows the opening 30 of the zippered stand bag 5 by the weight of the sucker block 18 fixing the bellows sucker 8 that sucks the zippered stand bag 5. The suction plate 8 is partially opened by the spring tensioning action, and the expansion bar 9 is advanced to a distance that reaches the chuck 31 at the back of the bag mouth at the center of the opening 30 of the stand bag 5 with a chuck, and the expansion bar 9 is expanded below the expansion bar 9. By opening the bar 9 downward, the expansion bar 9 and the fixing block 22 sandwich the lower surface of the opening 30 of the stand bag 5 with a zipper, and the center of the opening 30 of the zipper 31 is partially opened, which serves as a trigger. Since the weight of the sucker block 18 and the spring contraction action of the bellows sucker 8 act on the chuck 31 at the same time to instantly open the chuck 31 of the stand bag 5 with a chuck, the chuck opening work is stable and the chuck is chucked. It is possible to process the bagging work of articles reliably and with high efficiency without causing poor opening.

1 Bag opening holder 2 Goods holder 3 Chain conveyor 4 Goods supply conveyor 5 Stand bag with chuck 6 Bag stocker 7 Suction holder 8 Bellows sucker 9 Expansion bar 10 Carry-out conveyor 11 Suction cylinder block 12 Rod 13 Suction board 14 Suction pad 15 Guide Frame 16 Holding hole 17 Guide rod 18 Sucker block 19 Push-up cylinder 20 Push-up rod 21 Push-up piece 22 Fixed block 23 Expansion rod 24 Expansion cylinder block 25 Cylinder rod 26 Expansion cylinder 27 Cylinder rod 28 Bottom 29 Side wall 30 Opening 31 Chuck 32 Bag mouth retainer piece

Claims (3)

A suction holder that sucks one zippered stand bag from the bag stocker and transfers it to the bag opening holding position, and a suction holder that is located on the lower surface of the opening of the zippered stand bag and cooperates with the suction holder to suck on the lower surface of the opening. It consists of a bellows sucker that acts as a spring to open the opening, and a pair of upper and lower expansion bars that enter the chuck at the back of the opened opening of the stand bag with a chuck and open up and down to open the chuck. A stand bag opening device with a zipper. The bellows suction cup that acts as a spring is provided in the suction cup block at the tip of the guide rod that is inserted into the holding hole of the guide frame and moves by its own weight, and is arranged in pairs on the left and right below the opening of the stand bag with a chuck. The stand bag opening device with a chuck according to claim 1. The expansion bar descends near the article holder by the horizontal movement of the expansion cylinder block and the vertical movement of the expansion cylinder, and then advances to a distance that reaches the chuck at the back of the bag mouth in the center of the opening of the stand bag with a zipper. Then, by opening the expansion bar below the expansion bar downward, the center of the opening of the chuck is partially opened, which triggers the weight of the sucker block and the spring contraction action of the bellows sucker to act on the chuck at the same time. The stand bag opening device with a zipper according to claim 1, wherein the zipper of the stand bag with a zipper is instantly opened on the entire surface.

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