JP3757150B2 - Bag folding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for folding a bag such as a flexible container bag.
[0002]
[Prior art]
This type of flexible container bag is used to store, for example, pellets of epoxy resin, polyethylene resin, or other polymer resin, and stores, for example, a large amount of pellets of about 1 t, and It has an extremely large shape and mechanical strength that can be transported. The flexible container bag is cleaned inside and outside, dried, and further folded after use.
[0003]
Among these processing steps, the washing and drying steps are such that the flexible container bag is suspended from the open end portion of the hanger device that constitutes the transport line, and the inside and outside of the flexible container bag are suspended in this suspended state. In addition, automatic processing is possible by performing a process such as washing with jet water or the like, and further transporting to a drying stage and drying.
[0004]
However, the folding step could not be automated and there was no other way to deal with it by human naval tactics. In other words, the flexible container bag is manually removed from the hanger device, and it is unavoidable to use a processing method in which several people take together and fold it together.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a folding device that is extremely effective for labor saving of a folding step of a flexible container bag.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problem, a folding device according to the present invention includes a first device and a second device, and is used for folding a bag such as a flexible container bag. The bag is transported to a position where the first and second devices are located, with the open end being detachably supported by the hanger device and suspended. The first device and the second device temporarily fix the hanger device in cooperation with each other.
[0007]
The first device includes a bag holding mechanism, a bag removing mechanism, and a folding mechanism. The bag clamping mechanism clamps the opening side of the bag so as to be openable and closable at a position below a support position by the hanger device. The bag removing mechanism removes the bag from the hanger device after the holding operation by the bag holding mechanism. The bag folding mechanism folds at least two intermediate portions of the bag held by the bag holding mechanism.
[0008]
The second device includes a bag pressing mechanism, and the bag pressing mechanism is flattened by pressing the bag after being folded by the bag folding mechanism.
[0009]
As described above, the folding device according to the present invention targets a bag that is supported in a detachable manner by a hanger device and that is conveyed in a suspended state. This means that the bag is washed and dried.
[0010]
When the hanger device that suspends the bag is conveyed to the position of the folding device according to the present invention, the first device and the second device that constitute the folding device temporarily move the hanger device in cooperation with each other. Fixed.
[0011]
In this temporarily fixed state, the bag clamping mechanism included in the first device clamps the opening side of the bag so as to be openable and closable at a position below the support position by the hanger device. Therefore, after this, even if the support of the bag by the hanger device is released, the bag does not fall.
[0012]
The first device has a bag removing mechanism, and the bag removing mechanism removes the bag from the hanger device after the holding operation by the bag holding mechanism. Thereby, the bag is detached from the hanger device and is held by the bag holding mechanism of the first device.
[0013]
The first device includes a bag folding mechanism, and the bag folding mechanism folds the middle portion of the bag held by the bag holding mechanism into at least two. Such a bag folding mechanism can be easily realized by a slide bar mechanism.
[0014]
On the other hand, the second device includes a bag pressing mechanism, and the bag pressing mechanism is flattened by pressing the bag after being folded by the bag folding mechanism. As a result, the bag is folded.
[0015]
The above series of processing is automatically or semi-automatically executed by the first and second devices. For this reason, the bag folding step is labor-saving.
[0016]
The present invention is effective for folding a flexible container bag, but any flexible bag can be used as long as it is flexible.
[0017]
Other configurations and effects of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a front view showing the arrangement and configuration of the folding device according to the present invention before operation, and FIG. 2 is a plan view of the folding device shown in FIG.
[0019]
The illustrated folding device includes a first device 1 and a second device 2 and is used to fold a flexible container bag 3. The flexible container bag 3 is conveyed to a position where the first and second devices 1 and 2 are in a state where the open end is detachably supported by the hanger device 4 and is hung. The hanger device 4 has a monorail shape, for example, and is conveyed in one direction.
[0020]
A bag hanging portion 40 is attached to the hanger device 4 at a predetermined interval, and a bag hanging hook 41 is provided around the bag hanging portion 40.
[0021]
FIG. 3 is an enlarged view of the hanger device. The hook 41 has a structure that can be opened and closed. When the hook 41 is closed (the position indicated by the solid line in FIG. 3), the flexible container bag 3 is connected to the bag hanging portion 40. Can be constructed such that the sandwiching operation with respect to the flexible container bag 3 is released when the bag is opened and opened (the one-dot chain line position in FIG. 3).
[0022]
The flexible container bag 3 is used to store pellets of epoxy resin, polyethylene resin, or other polymer resin, and can store and transport a large amount of pellets of about 1 t, for example. It has extremely large shape and mechanical strength.
[0023]
The first device 1 and the second device 2 have a function of temporarily fixing the hanger device 4 in cooperation with each other. Specifically, the first device 1 has a carriage 11 and can move forward in the direction of the X axis indicated by the arrow X11 toward the second device 2, and the direction of the X axis indicated by the arrow X12. The first presser portion 12 that holds the hanger device 4 in the forward position is provided, while the second device 2 has a second presser portion at a position facing the first presser portion 12. 21.
[0024]
The first presser portion 12 is attached to a support member 10 that is fixedly provided on the carriage 11. The 2nd presser part 21 is comprised by the cylinder by hydraulic drive, for example. The support member 10 actually has a gate-like structure having an upper frame 13 and two opposing side frames 14 and 15.
[0025]
The first device 1 includes a bag holding mechanism 16, a bag removing mechanism 17, and a bag folding mechanism 18.
[0026]
The bag clamping mechanism 16 clamps the opening side of the flexible container bag 3 so as to be openable and closable at a position below the support position by the hanger device 4. The illustrated bag clamping mechanism 16 includes a first clamping member 161 and a second clamping member 162, which are spaced apart from a support member 10 that is fixedly provided on the carriage 11. Are arranged opposite to each other. The first clamping member 161 and the second clamping member 162 are moved over the slide bar (not shown) provided in the support member 10 by arrows Y11, Y12 (FIG. 2) by a drive device such as hydraulic, pneumatic or solenoid. It is driven in the direction of the Y axis shown in FIG. The Y-axis direction is a direction orthogonal to the X-axis direction.
[0027]
The first clamping member 161 and the second clamping member 162 can also move in the Z-axis direction indicated by arrows Z11 and Z12. The Z-axis direction is a vertical direction orthogonal to the X-axis and Y-axis directions.
[0028]
The bag removing mechanism 17 removes the flexible container bag 3 from the hanger device 4 after the holding operation by the bag holding mechanism 16. The illustrated bag removing mechanism 17 includes a first bag removing member 171 and a second bag removing member 172. The first bag removing member 171 and the second bag removing member 172 are rod-shaped, and one end thereof is supported by the support member 10 and is arranged so as to sandwich the hanger device 4 from both sides. The hook 41 of the hanger device 4 is opened by the operation of the first bag removing member 171 and the second bag removing member 172.
[0029]
The bag folding mechanism 18 folds at least two intermediate portions of the flexible container bag 3 held by the bag holding mechanism 16. The bag folding mechanism 18 includes a first bag folding member 181 and a second bag folding member 182. The illustrated first bag folding member 181 and second bag folding member 182 are rod-shaped, and are arranged stepwise at a substantially intermediate portion in the height direction of the support member 10. The first bag folding member 181 and the second bag folding member 182 are normally in the retracted positions at both ends, and an arrow is moved over a slide bar (not shown) provided in the support member 10 according to an operation command. Slide in the direction of Y11, Y12.
[0030]
The second device 2 includes a bag pressing mechanism 22, which is folded by the bag folding mechanism 18 and then flattened by applying pressure to the flexible container bag 3. The bag pressing mechanism 22 has a structure in which one end of a bar-shaped rotating arm piece 221 is rotatably supported by one end of a supporting arm piece 222. The other end of the support arm piece 222 is fixed to a flat receiving portion 223. The rotating arm piece 221 rotates around the Y axis as indicated by arrows Yθ1 and Yθ2. In the illustrated embodiment, two bag pressing mechanisms 22 are provided side by side in the Y-axis direction. The bag presser mechanism 22 has a lifting function that moves up and down in the Z-axis direction. The raising / lowering operation of the bag pressing mechanism 22 is executed by, for example, a hydraulic cylinder.
[0031]
For the operation of each component included in the first device 1 and the second device 2 described above, refer to FIGS. 4 to 36 showing different operation states of the folding device shown in FIGS. This will be described more specifically. In FIG. 4 to FIG. 36, a portion where the hatched portion is operated or a portion where it is operated is shown.
[0032]
When the hanger device 4 suspending the flexible container bag 3 is transported to the position of the folding device according to the present invention, the first device 1 and the second device 2 constituting the folding device cooperate with each other. Thus, the hanger device 4 is temporarily fixed.
[0033]
Specifically, before the hanger device 4 is temporarily fixed, the first device 1 is located away from the second device 2, and advances from this position in the direction indicated by the arrow X11.
[0034]
4 is a front view showing a state after the forward movement is finished, and FIG. 5 is a plan view of the state shown in FIG. As shown in FIGS. 4 and 5, the tip of the first presser portion 12 included in the first device 1 comes into contact with the side surface of the hanger device 4.
[0035]
Next, as shown in FIGS. 6 and 7, the second presser portion 21 included in the second device 2 operates, and the tip of the second presser portion 21 is on the side opposite to the first presser portion 12. Abuts against the other side. The second pressing portion 21 is a hydraulic cylinder or the like and is pressed against the side surface of the hanger device 4 with an appropriate force. The hanger device 4 is temporarily fixed by the cooperation of the first device 1 and the second device 2 described above.
[0036]
Next, in this temporarily fixed state, the bag holding mechanism 16 included in the first device 1 holds the opening side of the flexible container bag 3 at a position lower than the support position by the hanger device 4.
[0037]
8 is a front view showing a state after the bag holding mechanism 16 is operated, and FIG. 9 is a plan view of the operating state of FIG. In the illustrated bag holding mechanism 16, the first holding member 161 and the second holding member 162 slide on a slide bar (not shown) provided in the support member 10 in the directions of arrows Y11 and Y12. To do. Therefore, after that, even if the support of the flexible container bag 3 by the hanger device 4 is released, the flexible container bag 3 does not fall.
[0038]
The first device 1 has a bag removing mechanism 17, and the bag removing mechanism 17 removes the flexible container bag 3 from the hanger device 4 after the holding operation by the bag holding mechanism 16.
[0039]
10 is a front view showing the state after the bag removing mechanism 17 is operated, FIG. 11 is a view showing the operating state of the hanger device, and FIG. 12 is a plan view of the operating state shown in FIG. The illustrated bag removing mechanism 17 includes a first bag removing member 171 and a second bag removing member 172. The first bag removing member 171 and the second bag removing member 172 are lifted in a direction indicated by an arrow Z11 when a bag removing command is given, and the hanger device 4 that supports the flexible container bag 3 is supported. The support piece 41 is rotated. As a result, the flexible container bag 3 is detached from the hanger device 4. The flexible container bag 3 is held in a state of being sandwiched between the first sandwiching member 161 and the second sandwiching member 162.
[0040]
Next, the first clamping member 161 and the second clamping member 162 are moved downward. FIG. 13 is a front view showing a state after the bag holding mechanism 16 has been lowered in the direction of the arrow Z11, and FIG. 14 is a plan view of the lowered state of FIG. The lower side of the flexible container bag 3 is loosened by the lowering operation of the first clamping member 161 and the second clamping member 162.
[0041]
Next, the flexible container bag 3 is subjected to a two-fold step. As the two-folding means, the first device 1 includes a bag folding mechanism 18, and the bag folding mechanism 18 folds the intermediate portion of the flexible container bag 3 held by the bag holding mechanism 16 into at least two. The illustrated bag folding mechanism 18 includes a first bag folding member 181 and a second bag folding member 182, and the two folding is executed by the operation of these members 181 and 182. 15 to 28 are views showing a half-folding step.
[0042]
FIG. 15 is a front view showing the first step of the double folding step, FIG. 16 is a plan view of the step shown in FIG. 15, and FIG. 17 is an enlarged view showing the double folding state in FIGS.
[0043]
15 to 17, the first bag folding member 181 slides on a slide bar (not shown) provided in the support member 10 in the direction of arrow Y11. Thereby, the flexible container bag 3 is bent as shown in FIG.
[0044]
18 is a front view showing the second step of the double folding step, FIG. 19 is a plan view of the step shown in FIG. 18, and FIG. 20 is an enlarged view showing the half-folded state in FIGS.
[0045]
18 to 20, the second bag folding member 182 slides on a slide bar (not shown) provided in the support member 10 in the direction of arrow Y12. Thereby, the flexible container bag 3 is inflated, and is in a state of less swelling as shown in FIG.
[0046]
Next, after being folded by the bag folding mechanism 18 by the bag pressing mechanism 22 provided in the second device 2, the flexible container bag 3 is pressed and flattened. As a result, the flexible container bag 3 is folded. FIGS. 21-23 is a figure which shows the folding step by the 2nd apparatus 2, and includes three steps.
[0047]
21 is a front view showing the first step of the folding operation, FIG. 22 is a plan view of FIG. 21, and FIG. 23 is an enlarged view showing the folded state in the first step shown in FIGS. .
[0048]
As shown in these drawings, in the first step, the bag presser mechanism 22 is raised in the direction indicated by the arrow Z12. As a result, the lower half of the flexible container bag 3 that hangs downward from the second bag folding member 182 is lifted. In this step, the first bag folding member 181 is left as it is, and the second bag folding member 182 advances in the direction of the arrow Y12 so that the lower half of the flexible container bag 3 is exposed. Move up.
[0049]
24 is a front view showing the second step of the folding operation, and FIG. 25 is a plan view of FIG. As shown in the figure, in the second step, the first clamping member 161 returns to the original position. As a result, the flexible container bag 3 is released from the clamping action by the bag clamping mechanism 16, is displaced downward, and is received by the cradle 223.
[0050]
26 is a front view showing the third step of the folding operation, FIG. 27 is a plan view of FIG. 26, and FIG. 28 is an enlarged view showing the folded state in the third step shown in FIGS. . In the third step, the rotating arm piece 221 of the bag presser mechanism 22 provided in the second device 2 rotates in the direction indicated by the arrow Yθ1, presses the flexible container bag 3, and is flattened on the cradle 223. Turn into.
[0051]
Thereafter, the step of carrying out the bag 3 and the operation for returning to the original position shown in FIGS. 1 and 2 are executed. First, as shown in FIGS. 29 to 32, the second presser 21 provided in the second device 2 is retracted in the direction of the arrow X11, and the hanger device 4 is moved to the first presser 12 and the first presser. The second presser part 21 is released from being fixed.
[0052]
Next, as shown in FIG. 33, after the first device 1 is retracted in the direction indicated by the arrow X12, the bag pressing mechanism 22 is rotated in the direction indicated by the arrow Yθ2 as shown in FIG. 35, it is lowered in the direction indicated by the arrow Z11 and stopped at the unloading position. And the conveyor attached to the bag pressing mechanism 22 is started, and the bag 3 is carried out. After the bag 3 is carried out, the bag presser mechanism 22 is returned to the original position as shown in FIG.
[0053]
As described above, a series of folding processes is automatically or semi-automatically executed by the first and second devices 1 and 2. For this reason, the folding step of the flexible container bag 3 is labor-saving.
[0054]
Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is.
[0055]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a folding device that is extremely effective for labor saving of bag folding.
[Brief description of the drawings]
FIG. 1 is a front view showing the arrangement and configuration of a folding device before operation according to the present invention.
2 is a plan view of the folding device shown in FIG. 1. FIG.
FIG. 3 is a diagram illustrating a bag holding operation of the hanger device.
FIG. 4 is a front view showing a state after the forward movement of the first device is completed.
5 is a plan view of the state shown in FIG. 4. FIG.
FIG. 6 is a front view showing the operation of the bag holding mechanism.
7 is a plan view of the operation state of FIG. 6. FIG.
FIG. 8 is a front view showing a state after the bag holding mechanism is operated.
9 is a plan view of the operating state of FIG. 8. FIG.
FIG. 10 is a front view showing a state after the bag removing mechanism is operated.
11 is a plan view of the operation state shown in FIG.
FIG. 12 is a diagram illustrating a bag opening operation of the hanger device.
FIG. 13 is a front view showing a state after the bag holding mechanism has been lowered.
14 is a plan view of the descent operation completion state of FIG. 13;
FIG. 15 is a front view showing a first step of a two-fold step.
16 is a plan view of the step shown in FIG. 15. FIG.
17 is an enlarged view showing a half-folded state in FIGS. 15 and 16. FIG.
FIG. 18 is a front view showing a second step of the two-folding step.
FIG. 19 is a plan view of the step shown in FIG. 18;
20 is an enlarged view showing a half-folded state in FIGS. 18 and 19. FIG.
FIG. 21 is a front view showing a first step of a folding operation.
22 is a plan view of FIG. 21. FIG.
23 is an enlarged view showing a folded state in the first step shown in FIGS. 21 and 22. FIG.
FIG. 24 is a front view showing a second step of the folding operation.
25 is a plan view of FIG. 24. FIG.
FIG. 26 is a front view showing a third step of the folding operation.
27 is a plan view of FIG. 26. FIG.
28 is an enlarged view showing a folded state in the third step shown in FIGS. 26 and 27. FIG.
FIG. 29 is a diagram illustrating a step of retracting the second presser part provided in the second device to release the hanger device from the fixation of the first presser part and the second presser part.
30 is a plan view of the operating state shown in FIG. 29. FIG.
31 is a front view showing an operation completion state of the steps of FIGS. 29 and 30. FIG.
32 is a plan view of the operation state shown in FIG. 31. FIG.
FIG. 33 is a front view showing a step that follows the step of FIGS. 29 to 32;
34 is a front view showing a step that follows the step of FIG. 33. FIG.
35 is a front view showing a step that follows the step of FIG. 34. FIG.
36 is a front view showing a step that follows the step of FIG. 35. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st apparatus 2 2nd apparatus 3 Bag 4 Hanger apparatus 16 Bag clamping mechanism 17 Bag removal mechanism 18 Folding mechanism 22 Bag pressing mechanism

Claims (1)

A device for folding a flexible bag having an open end at one end, comprising a hanger device, a first device, and a second device,
The hanger device detachably sandwiches the opening end of the bag and conveys it to a position where the first and second devices are in a suspended state.
The first device includes a bag clamping mechanism, a bag removing mechanism, and a bag folding mechanism.
The bag clamping mechanism clamps the opening end side of the bag at a position lower than a support position by the hanger device,
The bag removing mechanism is a mechanism for removing the bag from the hanger device after the holding operation by the bag holding mechanism,
The bag folding mechanism is a mechanism that folds at least two intermediate portions of the bag held by the bag holding mechanism,
The second device includes a bag pressing mechanism, the bag pressing mechanism, after the bag has been folded in two by the bag folding mechanism is a mechanism for flattening further added to push the bag,
Folding device.

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