JP3787008B2 - How to bind bags - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a bag bundling method capable of performing a high-speed operation to squeeze the upper part of a bag and attach a bundling tool.
[0002]
[Prior art]
Conventional bag bundling devices or bag bundling methods are disclosed in JP-A-58-149225, JP-A-58-149229, JP-A-58-183460, JP-A-59-37121, JP-A-59. -62420, JP-A-59-163122, JP-A-59-212224, JP-A-62-260630, JP-B-58-7531, JP-B-61-27256, JP-B-61-27257, JP-B No. 62-38219, No. 1-59162, No. 2-12808, No. 5-7257, No. 7-64330, No. 8-85518, No. 58-139410 No. 58-139403, Japanese Utility Model Publication No. 62-182017, and the like.
[0003]
Among the above-described conventional inventions or devices, examples of the bag bundling apparatus or bag bundling method employed in the vertical bag making filling and packaging machine and the bag feeding filling and packaging machine include, for example, Japanese Patent Publication No. 7-64330 and Japanese Patent Publication No. 8 There is -85518, but the binding capacity was limited to about 20 bags per minute. When the bags are not bound, the packaging capacity of the packaging machine can be made and packaged at least 60 bags per minute at any manufacturer. However, if the bags are bundled, the packaging capacity will be reduced to one third because the packaging capacity of the packaging machine is not fully utilized. There was a strong demand for binding 40 bags.
[0004]
[Problems to be solved by the invention]
The present invention has been devised in view of the above points, and can greatly increase the ability to narrow and bind the bag mouth, and can be used in vertical bag making filling and packaging machines and bag filling and packaging machines. An object of the present invention is to provide a bag bundling method that contributes to the effective use of the packaging capability inherent in a packaging machine.
[0005]
[Means for Solving the Problems]
The invention of the present application has a total of four sandwiches, two on one side and two fork-shaped sandwiching claws in the same position in the plane direction, which are integral and opposite each other on the upper side and two on the lower side. When the claws 1a, 1b, 1c, 1d are closed, the two nail claws 1a, 1c that face each other up and down and the two nail claws 1b, 1d that face each other down pass each other The device 1 is opposed to both sides along the flat direction of the bag H so as to correspond to the height slightly lower than the height at which the bag holding device 2 holds the center position of the bag width of the upper portion of the bag H, After the pinching device 2 has pinched the center position of the bag width at the top of the bag H, the four pinch claws 1a, 1b, 1c, and 1d of the bag mouth narrowing device 1 are closed to narrow the bag H with the pinch claws. Then, the holding of the bag H by the bag holding device 2 is released, and then While serial bag opening narrowing device 1 makes a narrowing of the bag, pinching together horizontally moved to 90 ° different directions with respect to the closed direction nails, tie attachment device 3 in a direction opposite to the direction of the horizontal movement Is moved between the two upper claws 1a and 1c and the lower two claws 1b and 1d of the bag clamping device 2 to form a frame of the binding device attaching device 3 By passing the narrowed portion h of the bag H through the slit 3a and attaching a binding tool T to the narrowed portion h of the bag H that is passing, the pinch claws 1a, 1b, 1c, Rutotomoni the bag clamping device 2 is dropped the bag H to release the holding of the broad bag H by 1d is clamping the bag width center position of the top of the next bag H, then the bag opening Narrowing device 1 See claws 1a, 1b, 1c, 1d the invention is to provide a tying method of the bag, characterized in that for return movement of the tie attachment device 3 while moving in the open position prior to each other to close said.
[0006]
Embodiment
Hereinafter, embodiments of the bag bundling method according to the present invention will be described with reference to FIGS. 1 and 2. The bag bundling method is a method of shortening the time for bundling a bag by combining three operations of the bag mouth narrowing device 1, the bag clamping device 2, and the bundling tool attaching device 3.
[0007]
First, the configuration will be briefly described. The bag mouth squeezing device 1 has a total of four pinching claws 1a, 1b, 1c, and 1d facing both sides along the flat direction of the bag H, and two upper and lower pinching claws 1a on each side. 1b and 1c, 1d are in the same position as seen in the plane direction and are integrated, and are two pieces of nail 1a, 1b, 1c, a total of two pieces opposed to the upper side and two pieces opposed to the lower side. When the lid 1d is closed, the two nail claws 1a, 1c facing the upper side pass each other up and down, and the two nail claws 1b, 1d facing the lower side pass each other up and down. Thus, the pinching claws 1a and 1b and the pinching claws 1c and 1d are symmetric when viewed in a plane direction by an actuator (not shown) (a combination of a motor, a cam and a link, or a combination of two cylinder devices and a link). Box motion.
The bag clamping device 2 includes horizontal rods 2a and 2a that are opposed to each other in a straight line, and rubber pads 2b and 2b attached to the tips of the horizontal rods 2a. The horizontal rods 2a and 2a are moved toward and away from each other by an actuator (not shown). The rubber pad 2b, 2b holds the upper central portion of the bag H when approaching.
The binder attaching device 3 has an opening 3c in the center of the case 3b, a slit 3a leading from the front end of the case 3b to the opening 3c is provided, and a belt-like adhesive tape winding roll 3d is provided inside the case 3b. The adhesive tape (binding tool) T fed out from the winding roll 3d is guided to the binding gear 3e facing the slit 3a, and when the narrowed portion h of the bag H passes through the slit 3a, When the binding gear 3e rotates and the adhesive tape (binding tool) T winds around the narrowed portion h of the bag H, and when the narrowed portion h of the bag H pushes the lever 3f. The cutter 3g is configured to cut an adhesive tape (binding tool) T in which the narrowed portion h of the bag H is wound. The binding tool attaching device 3 is adapted to oppose the operation in which the pinching claws 1a, 1b, 1c, 1d squeeze the bag H and approach.
[0008]
Then, an effect | action (bag bundling method) is demonstrated.
First, as shown in FIG. 1A, the bag clamping device 2 clamps the center position of the bag width at the top of the bag H. In this operation, in FIG. 1 (a) and FIG. 3 (a), the bag clamping apparatus 2 moves as indicated by an arrow (A).
Note that the bag holding device 2 moves as indicated by an arrow (A) and the bag holding device 2 holds the center position of the bag width at the top of the bag H in the case of the action of the vertical bag making filling and packaging machine. . In the vertical bag making filling and packaging machine, the bag holding device 2 is provided slightly below the horizontal sealing / cutting device so as to approach / separate in the same direction as the opening / closing direction of the horizontal sealing / cutting device, After the horizontal sealing / cutting is performed and before the horizontal sealing / cutting device is opened, the bag clamping device 2 approaches to pinch the center position of the upper width of the bag H.
In the bag supply and filling machine, a large number of bag holding devices 2 are arranged and intermittently move endlessly, and one bag holding device 2 at a bag holding position upstream from the bag mouth narrowing position. Suppose that the state which has pinched | interposed the bag and moved to the bag mouth narrowing position is illustrated.
[0009]
Next, as shown in FIG. 1 (b), the bag H is narrowed by the pinching claws by closing the four pinching claws 1 a, 1 b, 1 c, 1 d of the bag mouth narrowing device 1. In this operation, the pinching claws 1a, 1b, 1c, and 1d are moved as shown by arrows (b) in FIGS. 1 (b) and 3 (a).
[0010]
Next, as shown in FIG. 1C, the holding of the bag H by the bag holding device 2 is released. In this operation, the bag clamping device 2 moves as shown by an arrow (c) in FIGS.
[0011]
Next, as shown in FIGS. 1D and 1E, the bag mouth squeezing device 1 horizontally moves in a direction different by 90 ° with respect to the direction in which the pinch claw is closed while the bag is squeezed. By facing the horizontal movement, the binding device attaching device 3 is moved horizontally and is moved between the upper two nail claws 1a, 1c and the lower two nail claws 1b, 1d of the bag holding device 2. The narrowing portion h of the bag H is passed through the slit 3a formed in the frame of the binding device attaching device 3, and the binding tool T is attached to the narrowing portion h of the passing bag H. In this operation, in FIG. 1 (d) and FIG. 3 (a), the bag mouth squeezing device 1 moves as indicated by an arrow (D) and at the same time the binding tool attaching device 3 moves as indicated by an arrow (E). In this case, if only one of the bag mouth narrowing device 1 and the binding tool mounting device 3 moves, the stroke must move by a vector plus arrows (e) and (d). However, since this is not the case, the operating time can be shortened, and thus the binding capacity of the bag can be increased.
[0012]
Next, as shown in FIG. 2 (a), the pinching claw of the bag mouth narrowing device 1 is separated to release the pinching of the bag H by the pinching claws 1a, 1b, 1c, 1d, and the bag H is dropped. Let In this operation, in FIG. 2 (a) and FIG. 3 (a), the bag mouth narrowing device 1 moves as indicated by an arrow (He). In addition, since the bag mouth narrowing device 1 moves as indicated by the arrow (f), the bag clamping device 2 moves as indicated by the arrow (b) and the bag clamping device 2 moves in accordance with this movement as described above. The bag width center position of the upper part of the bag H can be clamped. Therefore, the bag binding ability can be increased.
[0013]
Next, as shown in FIG. 2 (b), the nail claws 1a, 1b, 1c, and 1d of the bag mouth narrowing device 1 are moved to the open positions before the closing and the binding device attaching device 3 is moved back. In this operation, in FIG. 3 (a), the bag mouth squeezing device 1 moves as indicated by an arrow (G), and at the same time, the binding tool attaching device 3 returns and moves as indicated by an arrow (H). FIG. 1A shows a state where the return movement is performed.
[0014]
【The invention's effect】
As described above, according to the bag bundling method of the present invention, the bag mouth is narrowed by applying the box motion operation to the four nail claws 1a, 1b, 1c, and 1d of the bag mouth narrowing device 1. Since it moves to the side subsequently, the supply of the next bag can be performed simultaneously with the start of the side movement. Further, by temporarily moving the pinching claws 1a, 1b, 1c, and 1d with the bag mouth narrowed down to the binding tool mounting device 3 and the binding tool mounting device 3 to each other, the pinching claws 1a, 1b, 1c, and 1d The operating time is shortened by halving the stroke when only one of the binding tool attachment devices 3 moves. Furthermore, since the bag mouth squeezing device 1 and the binding device attaching device 3 approach each other, the relative speed increases in a short time, and momentum is obtained during the binding operation. A certain resistance can be overcome and the bundling operation can be ensured. As a result, it is possible to process 35 to 40 bags in one minute. Therefore, the ability to narrow down and bind the bag mouth can be greatly increased, and it can be used in vertical bag making filling and packaging machines and feeding bag filling and packaging machines. It can contribute to the effective use of.
[Brief description of the drawings]
FIGS. 1A to 1D are perspective views showing the middle of a process of a bag bundling method according to an embodiment of the present invention, and FIG. 1E is a view taken along the line ee in FIG.
2 is a perspective view showing the remaining steps of the bag bundling method of FIG. 1. FIG.
FIG. 3 is a schematic plan view showing all steps of a bag bundling method according to an embodiment of the present invention.
[Explanation of symbols]
1a, 1b, 1c, 1d ... pinching claw 1 ... bag mouth narrowing device 2 ... bag clamping device 3 ... binding tool attaching device 3a ... slit H ... bag h ... bag Refinement part of

Claims (1)

The upper and lower bifurcated claw claws on one side are in the same position in the plane direction and are integrated, and the claw claws of four pieces in total, two on both sides facing the upper side and two on the lower side, are closed. Sometimes the two nail claws facing the upper side pass up and down and the two nail claws facing the lower side pass up and down, the bag pinching device holds the center position of the bag width at the top of the bag The bag mouth squeezing device after the bag clamping device clamps the center position of the bag width at the upper part of the bag so as to face both sides along the flat direction of the bag so as to correspond to a height slightly below the height of the bag The four claws are closed to narrow the bag with the pinch claws, and then the bag is pinched by the bag clamping device, and then the bag mouth narrowing device holds the bag while narrowing the bag. Horizontal in a direction 90 ° different from the direction in which the nail is closed As well as dynamic, be advanced between two sheets of the claw of the two sheets of the claw and below the upper of the the tie attachment device in a direction opposite to the direction of the horizontal movement by the horizontal movement the bag clamping device the said binding Tabagu mounting passed through the bag broad of formed into a slit in the frame of the device by attaching the closure to the narrowing section portion of the bag in said passage, then, separating the pinching member of the bag mouth narrowing device sandwiching the bag width center position of the top of the bag Rutotomoni the bag clamping device follows to release the clamping to drop the bag broad bag by nail scissors by then, the claw of the bag mouth narrowing device bundling method of the bag, characterized in that for return movement of the tie attachment device with moving to the open position prior to each other to close said.

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