JPH07205341A - Box paper punching device - Google Patents

Abstract

PURPOSE:To provide a box paper punching device which can perform work separating box paper efficiency from mounting paper cut off into a form of a development drawing of a box without depending on hand work and correspond easily even to a change of a form of the box. CONSTITUTION:Mounting paper 30 cut off into a form of a development drawing of a box is set up on a box paper support pin 8 and the box paper support pin 8 is lowered by a box paper support pin elevating board 7. At this time, only the box paper support pin 8 positioned at an opening part is lowered by a box paper support pin partition plate 10 having an opening part 10a based on the form of the development drawing of the box. Then a punching plunger 6 is lowered within a cylinder 21 by air pressure. At this time also, only a punching plunger 6 positioned at an opening part 5a is lowered by an air partition plate 5 having an opening part 5a based on the form of the development drawing of the box. The box paper 31 is punched by the lowering plunger 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box paper punching device for pushing out a box paper sheet cut into a development view in a pre-process of assembling a box used for packing or the like.

[0002]

2. Description of the Related Art A box used for packaging or the like is formed by stacking a number of flat mounts such as corrugated cardboard and cardboard, punching and cutting them in a box development view, and bending the cut boxes appropriately. It is assembled by pasting. Of these, the cutting of the mount is automated, and a punching machine equipped with a blade shaped according to the shape of the developed view of the box is used. Also, assembling a box from a carton is also automated, and is carried out by a case packing machine, a box-sealing machine, a box-making machine, a box-making machine, or the like.

At the time of cutting the above-mentioned mount, the box paper cut from the multiple stacked mounts is cut, but is not separated from the surrounding parts. In addition, a bridge portion may be provided that partially connects the cut box and the surrounding area. Conventionally, as a method of separating the box from the multiple stacked sheets, a method of mainly manual work, that is, a method in which an operator directly tears the box has been adopted.

In some cases, a method is used in which a wooden board is cut into a male shape and a female shape having the same shape as the contour of the box by a laser processing machine, and the box paper is separated by a punching machine to which these wooden shapes are attached. It was

[0005]

As described above, the method of separating the box paper from the backing paper mainly employs inefficient manual work and hardly automates it. Was an obstacle to the progress.

Further, in the method of separating the carton by a punching machine equipped with a wooden mold, in addition to the durability of the wooden mold being low, it is necessary to manufacture the wooden mold by laser processing every time the shape of the box changes. However, the cost associated with this laser processing becomes expensive. Therefore, this method was not common.

An object of the present invention is to efficiently perform the work of separating the box paper from the mount cut in the shape of the developed view of the box without manual work, and to easily cope with the change of the box shape. It is to provide a box punching device.

[0008]

In order to achieve the above object, according to the present invention, a large number of vertically movable push-out plungers for pushing out a box paper cut from a mount into a development view of the box, and the box. A first partition plate having a first opening based on the shape of the developed view of the push-out plunger located outside the first opening and suppressing the downward movement of the push-out plunger; It has a plurality of box support pins that are installed so as to be able to move up and down facing each other and support the mount, and a second opening portion based on the shape of the developed view of the box, and the second opening below the box support pins. A box paper punching device is provided, which is provided with a second partition plate for suppressing the lowering of the box paper support pins located in other parts.

In the box punching device, preferably, a punching cylinder plate having a large number of cylinders is further provided below the first partition plate, and the pushing plunger moves up and down in the cylinders by air pressure. .

Further, preferably, a box paper support pin elevating plate is provided above the second partition plate for penetrating the box paper support pin and moving up and down while supporting the box paper support pin.

Further, preferably, a punching plunger guide plate provided above the first partition plate and having a guide hole for moving up and down the punching plunger, and a plurality of hard balls capable of being housed and discharged in the guide hole, It further comprises a hard ball pressing plate that holds down the push-out plunger via the hard ball and holds the push-out plunger in a state of protruding from the push-out plunger guide plate.

[0012]

In the present invention configured as described above, the mount cut in the shape of the developed box is supported on a number of raised box supporting pins. Of the many box support pins that can be raised and lowered, only the box support pins located in the second opening of the second partition plate are lowered, and the box support pins not located in the second opening are The second partition plate prevents the descent. on the other hand,
Of the many push-up plungers that can be moved up and down, only the push-out plunger located in the first opening of the first partition plate descends, and the push-out plunger located in the portion other than the first opening is the first. The partition plate prevents the descent.
Since each of the first opening and the second opening has a shape based on the development view shape of the box, as described above, when each of the push-out plungers located in the first opening descends, The box paper cut in the shape of the development view of the box is pushed out from the mount, and the pushed box paper is supported by the paper box support pins located in the lowered second opening. However, the portion around the box is supported by the box support pins whose descent is suppressed. In this way, it is possible to efficiently separate the carton from the mount without manual work. Further, by changing the shape of the opening of each of the first and second partition plates, it is possible to change the push-down plunger and the paper box support pin that can be lowered, and it is easy to change the shape of the box. It is possible.

In the above description, the large number of push-out plungers move up and down in the large number of cylinders provided on the cylinder plate by air pressure. However, since this cylinder is below the first partition plate, the first partition plate Only the push-out plunger located in the first opening can be lowered, and the lowering push-out plunger can push out the box from the mount.

Further, the box supporting pin passes through the box supporting pin elevating plate and moves up and down while being supported by the box supporting pin elevating plate, so that the second opening of the second partition plate. The paper box support pin located at can be lowered.

Further, a hard ball is accommodated in the guide hole of the push-out plunger guide plate from above the push-out plunger, and the push-out plunger is held by the hard-ball retainer plate through the hard ball. It is held in a state of protruding from the guide plate. However, only the push-out plunger located in the first opening of the first partition plate can pass through the first partition plate and descend, and only the push-out plunger is held in a protruding state.
On the other hand, the other punching plungers are prevented from descending by the first partition plate. Then, the box blank can be pushed out of the mount by the push-out plunger held in the protruding state. Further, in this case, since the push-out plunger is firmly pressed, it is possible to surely push out the paper box with a force larger than that of the configuration using the pneumatic pressure described above.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a paper box punching device according to the present invention will be described with reference to FIGS.

First, the construction of the box punching device of this embodiment will be described with reference to FIGS. In FIG. 1, a box punching device 100 includes a box sheet supporting pin guide plate 2 installed on a sole plate 1 through a supporting member 1a, and a punching cylinder arranged above the box sheet supporting pin guide plate 2. Plate 3, air feeding lid 4 and air partition plate 5 arranged on the upper side of the punching cylinder plate 3, a large number of punching plungers 6 provided in the punching cylinder plate 3, the punching cylinder plate 3 and a paper box The box paper support pin lifting plate 7 arranged between the support pin guide plates 2, the many paper box support pins 8 arranged so as to penetrate the box paper support pin lift plate 7, and the box paper support pin guide plate 2 A partition plate pressing plate 9 and a box supporting pin partition plate 10 arranged on the lower side are provided. In the above, the punching cylinder plate 3 is fixed to the housing 11. However, in FIG. 1, for simplicity, the numbers of the push-out plunger 6 and the paper box support pins 8 are shown to be small.
The shape of No. 1 is also shown in a simplified manner (the same applies to FIGS. 9 to 14 and FIGS. 16 to 18). Further, for ease of discrimination, the air partition plate 5 is shown above the punching cylinder plate 3, and the box support pin partition plate 10 is also shown above the partition plate holding plate 9.

A sliding round bar 12 is fixed on the sole plate 1, the sliding round bar 12 is fixed through the box paper support pin guide plate 2, and the upper end is fixed to the upper plate 13 by a nut 14. There is. The sliding rod 12 includes guides 1 for the housing 11 to which the punching cylinder plate 3 is fixed, the box supporting pin lifting plate 7, and the partition plate holding plate 9.
1A, 7A, 9A are penetrated, and the housing 11, the paper box support pin elevating plate 7, and the partition plate pressing plate 9 can be independently raised and lowered along the sliding rod 12 by a feed screw (not shown). . The housing 11, the paper box support pin lifting plate 7, and the partition plate pressing plate 9 may be lifted or lowered by a combination of a rack and a pinion, hydraulic or pneumatic cylinders, or mechanically lifted by a lever or the like in addition to the feed screw. Good.

An air supply port 4a for supplying or sucking air is provided on the upper portion of the air feeding lid 4, and a lid plate 15 is provided on the lower surface of the air feeding lid 4 and a sealing member 4c.
The air chamber 4b is formed by being fixed through. Further, the lid plate 15 is provided with the same number of air holes 15a at the same positions as the push-out plungers 6. Further, a sliding round bar 16 is fixed to the housing 11, the sliding round bar 16 penetrates an end portion of the lid plate 15, and an upper end thereof is fixed to a lid upper plate 17 by a nut 18. . The lid plate 15, and thus the air feeding lid 4, can be moved up and down along the sliding rod 16 by a feed screw (not shown). The lid plate 15 may be moved up and down by a combination of a rack and a pinion, hydraulic or pneumatic cylinders other than the feed screw, or mechanically lifted by a lever or the like.

A positioning guide 19 for positioning the mount 30 is installed on the box supporting pin guide plate 2, and the positioning guide 19 is provided with a fixed handle 20. Further, the box paper support pin elevating plate 7 is provided with an opening so as not to interfere with the positioning guide 19, and the box paper supporting pin elevating plate 7 moves up and down without interfering with the positioning guide 19. Further, when the box paper support pin lift plate 7 rises to a predetermined maximum position, the box paper support pin lift plate 7 is clamped and fixed by the fixed handle 20 on the positioning guide 19.

As shown in FIG. 2A, the punching cylinder plate 3 is composed of three plates made of the same material as the seal members 3a and 3a.
It is formed by integrally bonding via b. The push-out cylinder plate 3 is provided with a large number of cylinders 21, and a push-out plunger 6 is provided in each cylinder 21 so as to be able to move up and down as shown in FIG. However, in FIG. 2A, for the sake of simplicity, the cylinder 21
The number of Each cylinder 21 is divided into an upper portion and a lower portion by a piston portion 6a above each push-out plunger 6, and the space between them is sealed. An upper air chamber 22 communicating with the upper portion of the cylinder 21 is provided above the punching cylinder plate 3.
Is provided, and the cylinder 2 is provided below the punching cylinder plate 3.
A lower air chamber 23 that communicates with the lower part of 1 is provided. The upper air chamber 22 and the lower air chamber 23 are sealed by sealing members 3a and 3b, respectively.

Further, the air from the air feeding lid 4 is supplied to the upper portion of each cylinder 21 through the air port 15a.
1 is provided with an air hole 24, and a plunger guide hole 25 through which the push-out plunger 6 penetrates is provided in the lower portion. The inner diameters of the air hole 24 and the plunger guide hole 25 are smaller than that of the piston portion 6a, and the piston portion 6a moves up and down within the range of the cylinder 21, that is, between the upper air chamber 22 and the lower air chamber 23. The push-out plunger 6 has such a length that the lower surface of the push-out cylinder plate 3 and the bottom surface of the push-out plunger 6 coincide with each other when the push-out plunger 6 is at the highest position. A plan view of the punching cylinder plate 3 is shown in FIG. However, in FIG. 2B, a small number of air holes 24 are drawn for simplicity.

An air partition plate 5 is superposed on the upper surface of the punching cylinder plate 2 as will be described later, and an opening 5 of the air partition plate 5 is formed.
Air is sent only from the air hole 24 located at a (see FIGS. 4 and 5), and only the punching plunger 6 at that position descends. On the other hand, the air holes 24 located outside the openings of the air partition plate 5 are blocked by the air partition plate 5 and air is not sent,
The push-out plunger 6 at that position does not descend.

As shown in FIG. 1, the push-out plunger 6
And the number of box support pins 8 are the same.
Are located so as to face each of the push-out plungers 6 so that their center lines coincide with each other. The paper box support pin lifting plate 7, the paper box support pin guide plate 2, and the partition plate pressing plate 9 are provided with pin guide holes 7a, 2a, and 9a through which the paper box support pin 8 passes. A flange portion 8a is provided on the upper portion of the box supporting pin 8.
And an engaging portion 7 having a slightly larger inner diameter so that it can be engaged with the flange portion 8a of the box supporting pin 8 in the upper portion of the pin guide hole 7a provided in the box supporting pin elevating plate 7.
b is provided. Further, when they are engaged with each other, the upper surface of the box supporting pin elevating plate 7 and the upper surface of the box supporting pin 8 form the same plane. The paper box support pin 8 has such a length that the lower surface of the paper box support pin guide plate 2 and the bottom surface of the paper box support pin 8 coincide with each other when the paper box support pin lift plate 7 is at the highest position.

When the box supporting pin elevating plate 7 moves up and down with the engaging portion 7b of the box supporting pin elevating plate 7 and the flange 8a of the box supporting pin 8 engaged, the box supporting pin 8 also moves. Ascending and descending while penetrating the box support pin guide plate 2 and the partition plate pressing plate 9. Actually, as will be described later, the box sheet support pin partition plate 10 is superposed on the lower portion of the box sheet support pin lift plate 2 and is placed in the opening 10a (see FIGS. 6 and 7) of the box sheet support pin partition plate 10. The box supporting pin 8 descends only through the pin guide holes 7a, 2a, 9a located. On the other hand, the pin guide holes 7a, 2a, other than the opening of the box supporting pin partition plate 10,
Since 9a is blocked by the box paper support pin partition plate 10, the box paper support pin 8 at this position does not descend.

As the mount, a large number of flat papers such as corrugated cardboard and cardboard are stacked, and the blanks are punched and cut into a box development view. That is, a large number of stacked mounts (hereinafter simply referred to as mounts) are automatically cut using a punching machine equipped with a blade formed in accordance with the shape of the developed view of the box. An example of the mount when this cutting is completed is shown in FIGS. 3 (a) and 3 (b). In the figure, the broken line is a broken line when assembling the box. At this time, the box paper 31 cut from the mount 30 is cut, but is not separated from the surrounding parts. Although not shown, a bridge portion that connects the cut box paper 31 and the surrounding portion 32 may be provided, for example, in a straight line portion or a corner portion of the developed view.

An air partition plate corresponding to the mount 30 as shown in FIG. 3 is shown in FIG. The outer shape of the air partition plate 5 is substantially the same as the outer shape of the box 31 but is different in details corresponding to the oblique outer shape and the curved outer shape of the box 31. The air partition plate 5 is formed by punching a thin plate made of a relatively soft material such as rubber by using a punching machine having the same blade as that used when the box 31 is cut. Then, as will be described later, some modifications are made to close a part of the opening. Such an air partition plate can be easily manufactured in the same manner as when punching and cutting a box.

FIG. 5 is a view showing the positional relationship between the air partition plate of FIG. 4, the paper box and the punching plunger. Further, in FIG. 5, the outer shape of the box 31 is shown by a solid line, and the opening 5a of the air partition plate 5 is shown by a broken line. Further, the circles in the figure indicate the position of the punching plunger 6. In order to push out the cut box paper 31 from the mount 30, in the air partition plate 5,
It is necessary to prevent the push-out plunger 6 from descending by not opening it at a portion where the push-out plunger 6 and the outer shape of the box 31 intersect even a little. Therefore, after forming an opening (shown by a one-dot chain line in FIG. 5) having the same shape as that of the box 31 on the air partition plate 5, a portion where the punching plunger 6 and the outer shape of the box 31 intersect with each other is slightly blown. It is closed by sticking a small piece of the same material as the partition plate 5 (shown by the solid line in FIG. 5). As a result, only the push-out plunger 6 hatched in the figure descends, and the box 31 is pushed out.

A box paper support pin partition plate corresponding to the air partition plate shown in FIG. 4 is shown in FIG. The outer shape of the box supporting pin partition plate 10 is also substantially the same as the outer shape of the box 31, but also differs in details corresponding to the oblique outer shape and the curved outer shape of the box 31. The box supporting pin partition plate 10 is made of a material harder than the air partition plate 5, for example, a thin plate made of plastic, bakelite, or the like, using a punching machine having the same blade as when the box 31 is cut. , Forming an opening. Then, as will be described later, some modifications are made to widen a part of the opening. Such a box paper support pin partition plate can be easily manufactured as in the case of punching and cutting the box paper.

FIG. 7 is a diagram showing the positional relationship between the box paper support pin partition plate of FIG. 6, the box paper and the punching plunger.
In FIG. 7, the outer shape of the box 31 is shown by a solid line, and the opening 10a of the box supporting pin partition plate 10 is shown by a broken line. The circles in the figure indicate the position of the box supporting pin. In order to support the box 31 pushed out from the mount 30 at its lower part, in the box supporting pin partition plate 10, the box supporting pin 8 and the box supporting pin 8 are provided at a portion where the outer shape of the box supporting 31 and the outer shape of the box 31 are even slightly intersected. Must be prevented from falling. Therefore, after forming the opening (shown by the alternate long and short dash line in FIG. 7) in the box supporting pin partition plate 10, the part where the box supporting pin 8 and the outer shape of the box 31 intersect is widened by cutting away. (Indicated by a solid line in FIG. 7). As a result, only the box supporting pin 8 hatched in the figure descends, and the pushed box 31 is supported.

Next, the operation of the box punching device of this embodiment will be described with reference to FIGS. 1 and 8 to 13.

First, in step S1 of FIG. 8, the air partition plate 5 is interposed between the lid plate 15 and the punching cylinder plate 3, and the box paper support pin partition plate 10 is pressed between the box paper support pin guide plate 2 and the partition plate retainer. It is installed between the plates 9. At this time, the box paper support pin lift plate 7 is raised to raise all the box paper support pins 8 to the highest position, and the box paper support pin lift plate 7 is tightened and fixed by the fixing handle 20 on the positioning guide 19 at the highest position. I'll do it. As a result, the engaging portion 7b of the box supporting pin lifting plate 7 and the flange 8a of the box supporting pin 8 are provided.
Engage with each other, and the upper surface of the box supporting pin lifting plate 7 and the upper surface of the box supporting pin 8 are located on the same plane. Further, the push-out plunger 6 is also raised to the highest position by supplying air to the lower air chamber 23 from an air supply port (not shown). The push-out plunger 6 may be raised by sucking from the air supply port 4a of the air feeding lid 4 to make the upper air chamber 22 have a negative pressure (see FIG. 1).

Next, in step S2, the mount 30 cut in the shape of the developed box is placed on the box supporting pin elevating plate 7, that is, the box supporting pin 8. At this time, the position of the mount 30 is determined by the positioning guide 19 and the positional deviation is prevented. FIG. 1 is a diagram showing a state when the above step S2 is completed.

Then, in step S3, the air feeding lid 4 is lowered to set the air partition plate 5 to the lid plate 15.
It is sandwiched by the punching cylinder plate 3. Further, in step S4, the partition plate pressing plate 9 is raised to sandwich the box paper support pin partition plate 10 between the box paper support pin guide plate 2 and the partition plate pressing plate 9. FIG. 9 shows the state when step S4 ends. The order of steps S3 and S4 may be reversed.

Next, in step S5, the box supporting pin lifting plate 7 is lowered. That is, as shown in FIG.
The paper box support pin lifting plate 7 is lowered to the lowermost position, and the paper box support pin 8 is engaged with the engaging portion 7b of the paper box support pin lifting plate 7.
To lower. At this time, only the paper box support pins 8 (the paper box support pins 8 with hatched portions in FIG. 7) located in the openings 10a of the paper box support pin partition plate 10 are lowered, and the paper box support pin partition plate 10 is lowered. The paper box support pins 8 located other than the opening 10a are restrained by the box paper support pin partition plate 10 and do not descend. At the same time, the housing 11 is lowered until the bottom surface of the punching cylinder plate 3 is directly above the mount 30.

Next, in step S6, the push-out plunger 6 is lowered to push out the paper box 31. That is,
As shown in FIG. 11, the air chamber 4b of the air feeding lid 4
Air is supplied to the upper air chamber 22 of the punching cylinder plate 3 by supplying air to the cylinder 21 through the air hole 24 located at the opening 5a of the air partition plate 5. It is supplied and the push-out plunger 6 descends. At this time, only the push-out plunger 6 located in the opening 5a of the air partition plate 5 descends, and the push-out plungers 6 located in other than the opening 5a of the air partition plate 5 are restrained by the air partition plate 5 and do not descend. . As a result, the push-out plunger 6 that has descended and the box paper support pin 8 that has descended
Has a relationship of male and female, and the box 31 is pushed out from the mount 30.

Subsequently, in step S7, the lowered push-out plunger 6 is raised. That is, as shown in FIG. 12, the air supply to the air chamber 4b is stopped, and the air is supplied again to the lower air chamber 23 of the push-pull cylinder plate 3, so that all the push-down plungers 6 that have descended. Rises. At this time as well, the push-out plunger 6 may be lifted by sucking from the intake port 4a of the air feeding lid 4 to make the upper air chamber 22 have a negative pressure. afterwards,
In step S8, an unnecessary portion 32 of the mount 30 around the punched box 31 is discharged by a method such as sliding.

Next, in step S9, as shown in FIG. 13, the box supporting pin lifting plate 7 is raised again to the highest position (the position shown in FIG. 1). As a result, the box paper 31 pushed out in step S6 rises and can be taken out. Finally, in step S10, the required box 31 is taken out by a method such as sliding, and the operation is completed.

When the other boxes having the same shape are continuously pushed out, the next mount is set after step S10 is completed, the process returns to step S5, and the same operation is performed thereafter. Further, when pushing out a paper box of another shape, the process returns to step S1 and the same operation may be performed from the place where the air partition plate and the box paper support pin partition plate based on the box paper shape are installed. In this case, since the air partition plate and the box paper support pin partition plate can be easily manufactured as in the case of punching and cutting the box paper as described above, the box shape can be easily changed.

The above operation can be stored in a computer as a program and automatically executed.

According to the present embodiment as described above, by installing the box supporting pin partition plate 10, only the box supporting pin 8 located in the opening 10a based on the developed shape of the box is lowered. By installing the air partition plate 5, only the push-out plunger 6 located in the opening 5a based on the development view shape of the box is lowered, so that the box paper 31 cut into the development view shape of the box is manually operated. It can be pushed out efficiently. Also, the operation can be automated. Further, by simply changing the shapes of the opening 5a of the air partition plate 5 and the opening 10a of the box supporting pin partition plate 10,
It is possible to change the positions of the push-out plunger 6 and the box sheet supporting pin 8 which can be lowered, and it is possible to easily cope with the change of the box shape.

Further, the push-out plunger 6 is attached to the cylinder 2
Since it is moved up and down by air pressure in 1, the push-out plunger 6 located in the opening 5a can be easily lowered, and the box 31 can be pushed out easily.

Further, since the box sheet support pin elevating plate 7 is moved up and down while supporting the box sheet support pin 8, the box sheet support pin 8 located in the opening 10a can be easily moved up and down.

Next, another embodiment of the paper box punching device according to the present invention will be described with reference to FIGS.

First, the construction of the box punching device of this embodiment will be described with reference to FIG. However, in FIG. 14, the same members as those in FIG.
The same applies to 6 to 18). Further, for easy identification, the push-out plunger partition plate 49 is the partition plate pressing plate 44.
And the box support pin partition plate 10 is also shown above the partition plate pressing plate 9.

In the box punching device 101 shown in FIG. 14, the punching plunger guide plate 41 is fixed to the housing 11, and the sliding round bar 16 fixed to the upper part of the housing 11 fixes the end portion of the hard ball pressing plate 42. Penetrates. Also, a sliding round bar 43 is fixed to the lower part of the housing 11, and this sliding round bar 43 penetrates a partition plate pressing plate 44 provided below the punching plunger guide plate 41.
It penetrates A and further penetrates the box supporting pin guide plate 2. The hard ball pressing plate 42 can be moved up and down along the sliding round bar 16 by a feed screw (not shown), and the partition plate pressing plate 44 can also be moved up and down along the sliding round bar 43 by a feed screw (not shown). However, when the housing 11 moves up and down, the sliding rod 43 penetrates the box supporting pin guide plate 2 and moves up and down.

The push-out plunger guide plate 41 is formed by integrally bonding two plates made of the same material. A large number of guide holes 45 are provided in the push-out plunger guide plate 41, and a push-out plunger 46 is provided in each of the guide holes 45 so as to be movable up and down as shown in FIG. The upper portion of the push-out plunger 46 has a large diameter portion 46a, and the upper portion of the guide hole 45 has a large diameter hole 45a so that the large diameter portion 46a of the push-out plunger 46 can be accommodated. Further, the lower part of the guide hole 45 has a small diameter hole 4 so that the large diameter part 46a of the push-out plunger 46 cannot penetrate.
It is 5b. Therefore, the large diameter portion 46a of the push-out plunger 46 moves up and down within the range of the large diameter hole 45a. Also,
The push-out plunger 46 has such a length that the upper surface and the lower surface of the push-out plunger guide plate 41 and the upper surface and the bottom surface of the push-out plunger 46 respectively coincide with each other at the highest position.

A large number of hard balls 47 are supplied to the upper surface of the push-out plunger guide plate 41 by a supply means (not shown) as described later, and are accommodated in the guide hole 45 from above the push-out plunger 46. Needless to say, the size of the hard ball 47 can be accommodated in the guide hole 45, but when the hard ball 47 is filled in the guide hole 45 at the lowest position of the push-out plunger 46 (for example, as shown in FIG. 14). When the ball is filled with three hard balls 47), the highest position of the filled hard balls 47 and the punched plunger guide plate 41
The size is the same as the top surface. Further, the hard ball 47 is prevented from falling from the upper surface of the plunger guide plate 41 by the stopper 48 provided on the upper surface of the punch-out plunger guide plate 41. However, the hard ball pressing plate 42 is provided with an opening so as not to interfere with the stopper 48, and the hard ball pressing plate 42 moves up and down without interfering with the stopper 48. As the hard sphere 47, it is preferable to use a metal sphere having a certain weight such as steel.

Further, the partition plate holding plate 44 is provided with a plunger guide hole 44a through which the push-out plunger 46 penetrates, and the push-out plunger partition plate 49 is arranged above the partition plate holding plate 44. The shape of the push-out plunger partition plate 49 is the air partition plate 5 described in FIGS. 4 and 5.
Is the same as. The configuration other than the above is the same as that of the embodiment shown in FIGS.

The operation of the box punching device of this embodiment will be described with reference to FIGS. First, in step S21 of FIG. 15, a large number of hard balls 47 are pushed out and supplied to the upper surface of the plunger guide plate 41. At this time, the partition plate pressing plate 44 and the punching plunger partition plate 49 are lowered,
All the push-out plungers 46 are lowered to the lowest position of the guide hole 45. As a result, the hard ball 47 is moved into the guide hole 4
5 is housed from above the punching plunger 46. On the other hand, the box supporting pin lifting plate 7, the partition plate pressing plate 9, and the box supporting pin partition plate 10 are lowered to the lowest position, and all the box supporting pins 8 are lowered to the lowest position.

Next, in step S22, the partition plate pressing plate 44 is raised to sandwich the push-out plunger partition plate 49 between the push-out plunger guide plate 41 and the partition plate pressing plate 44. As a result, as shown in FIG. 16, the push-out plungers 46 located at the openings of the push-out plunger partition plate 49 do not rise, and the push-out plungers 46 located at other than the openings are pushed to the push-out plunger partition plate 49. Then, the hard balls 47 housed in the guide hole 45 at that position are pushed out. Then, the extruded hard balls 47 are cleaned from the upper surface of the plunger guide plate 41 in the next step S23. Further, in the next step S24, the hard ball pressing plate 42 is lowered to enclose the hard balls 47 in the guide holes 45. As a result, it is possible to maintain the state in which only the push-out plunger 46 located in the opening of the push-out plunger partition plate 49 is in the lowest position, that is, the state in which it protrudes from the push-out plunger guide plate 41.

Next, at step S25, the box supporting pin lifting plate 7 is raised to the highest position, and all the box supporting pins 8 are raised to the highest position. As a result, the engaging portion 7b of the box supporting pin lifting plate 7 and the flange 8a of the box supporting pin 8 are engaged, and the upper surface of the box supporting pin lifting plate 7 and the upper surface of the box supporting pin 8 are flush with each other. Located on top. Then, in step S26, the mount 30 cut into the development view shape of the box.
Is set on the box supporting pin elevating plate 7, that is, the box supporting pin 8 as in step S2 of the above-described embodiment. Then, in step S27, as in steps S4 and S5 of the above-described embodiment, the partition plate pressing plate 9 is lifted to move the box supporting pin partition plate 10 by the box supporting pin guide plate 2 and the partition plate pressing plate 9. It is pinched, and in step S28, the box paper support pin lifting plate 7
Is lowered to lower only the box supporting pin 8 located at the opening of the box supporting pin partition plate 10. This step S2
FIG. 17 shows the state when 8 is completed.

Next, in step S29, the push-out plunger 46, the housing 11, the push-out plunger guide plate 41, the hard ball holding plate 42, the push-out plunger partition plate 49, and the partition plate holding plate 44 are integrally lowered. At this time, since the push-out plunger 46 located at the opening of the push-out plunger partition plate 49 is pressed by the hard ball pressing plate 42 via the hard ball 47, it remains protruding from the push-out plunger guide plate 41. As shown in FIG. 18, the protruding punch-out plunger 46 allows the box paper 31 to be pushed out from the mount 30 by descending.

Subsequently, in step S30, the push-out plunger 46, the housing 11 and the push-out plunger guide plate 41, the hard ball pressing plate 42, the push-out plunger partition plate 49, and the partition plate pressing plate 44 are integrally lifted, In S31, the unnecessary portion 32 of the mount 30 around the punched box 31 is discharged by a method such as sliding. Next, in step S32, the box supporting pin lifting plate 7 is raised again to the highest position, and finally, in step S33, the required box 31 is taken out by a method such as sliding, and the operation is completed.

When another box having the same shape is continuously pushed out, the next mount is set after the step S33 is finished, the process returns to the step S28, and the same operation is performed thereafter. Further, when pushing out a box of another shape, the punching plunger partition plate 49 and the box paper support pin partition plate 10 are used.
, And once the hard sphere 47 is eliminated, a punching plunger partition plate and a box paper support pin partition plate based on the box shape are newly installed, and the process returns to step S1. Good.

According to this embodiment, the push-out plunger 46 located at the opening of the push-out plunger partition plate 49.
Is pressed by the hard ball pressing plate 42 via the hard balls 47, the push-out plunger 46 can be kept in a state of protruding from the push-out plunger guide plate 41. 31
Can be pushed through. Further, in this case, since the push-out plunger 46 is firmly pressed, it is possible to surely push out the paper box 31 with a force larger than that in the above-described embodiment using pneumatic pressure.

[0057]

According to the present invention, since the predetermined punching plunger and the box paper support pin based on the shape of the developed view of the box are lowered, the box paper cut into the shape of the expanded view of the box can be manually operated. Therefore, it is possible to efficiently separate them, and to automate them. Furthermore, by changing the positions of the push-out plunger and the box sheet supporting pin that can be lowered, it is possible to easily deal with the change of the box shape.

Further, since the push-out plunger is pneumatically moved up and down in the cylinder, the push-out plunger can be easily lowered and the box can be easily pushed out. Further, since the box paper support pin elevating plate is moved up and down while supporting the box paper support pin, the box paper support pin can be easily moved up and down.

Further, since the push-out plunger is pressed by the hard-ball pressing plate via the hard balls and the push-out plunger is held in a protruding state, the box paper is surely pushed out with a force larger than that in the case of utilizing pneumatic pressure. be able to.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the configuration of a box punching device according to an embodiment of the present invention, in which an air partition plate and a box paper support pin partition plate are installed and further cut into a box development shape. It is a figure which shows the situation which installed the mount.

FIG. 2 is a view showing the punch cylinder plate of FIG.
(A) is sectional drawing, (b) is a top view.

3A and 3B are views showing an example of a mount paper cut into a development view of a box, in which FIG. 3A is a plan view and FIG. 3B is a view seen from the direction B in FIG. 3A.

FIG. 4 is a plan view of an air partition plate corresponding to the mount as shown in FIG.

5 is a diagram showing a positional relationship between the air partition plate of FIG. 4, a paper box and a punching plunger.

FIG. 6 is a view showing a box paper support pin partition plate corresponding to the air partition plate shown in FIG. 4;

FIG. 7 is a diagram showing the positional relationship between the box paper support pin partition plate of FIG. 6, the box paper and the punching plunger.

8 is a flowchart showing the operation of the box punching device of FIG.

FIG. 9 is a view showing a state where the air partition plate is sandwiched between the air feeding lid and the punching cylinder plate and the box paper support pin partition plate is sandwiched between the box paper support pin guide plate and the partition plate retainer plate, following FIG. 1; Is.

FIG. 10 is a view showing a state where the box supporting pin lifting plate is lowered following FIG. 9;

FIG. 11 is a view illustrating a state where the punching plunger is lowered and the box paper is pushed out, following FIG.

FIG. 12 is a view illustrating a state where the lowered push-out plunger is raised following FIG. 11;

FIG. 13 is a view illustrating a state in which the box supporting pin lifting plate is lifted to the highest position again following FIG.

FIG. 14 is a sectional view showing the construction of a box punching device according to another embodiment of the present invention.

15 is a flowchart showing the operation of the paper box punching device of FIG.

FIG. 16 is a diagram showing a state when step S22 of FIG. 15 is finished.

FIG. 17 is a diagram showing a state when step S28 of FIG. 15 is finished.

FIG. 18 is a diagram showing a state when step S29 in FIG. 15 is finished.

[Explanation of symbols]

 3 Push-out cylinder plate 4 Air feed lid 5 Air partition plate 6 Push-out plunger 7 Box paper support pin lifting plate 7b Engagement part 8 Box paper support pin 8a Flange part 9 Partition plate retainer plate 10 Box paper support pin partition plate 15 Plate for lid 21 Cylinder 22 Upper air chamber 23 Lower air chamber 30 Mount 31 Box paper 41 Push-out plunger guide plate 42 Hard ball retainer plate 45 Guide hole 47 Hard ball 49 Push-out plunger partition plate

Claims (4)

[Claims] 1. A plurality of vertically movable push-out plungers for pushing out a box paper cut from a mount into a box development view shape, and a first opening based on the box development view shape, wherein: No. 1 opening, a first partition plate for suppressing the downward movement of the push-out plunger, and a plurality of boxes installed below the respective push-out plungers so as to be able to move up and down so as to support the mount. A second support having a paper support pin and a second opening based on the shape of the developed view of the box, and preventing the lowering of the paper support pin located below the second support in the box support pin. A box sheet punching device, comprising: 2. A push-out cylinder plate having a large number of cylinders is further provided below the first partition plate, and the push-out plunger moves up and down in the cylinder by air pressure. Box paper punching device. 3. A box paper support pin elevating plate for penetrating said box paper support pins and for raising and lowering said box paper support pins while supporting said box paper support pins is further provided above said second partition plate. The box paper punching device according to Item 1. 4. A push-out plunger guide plate having a guide hole provided above the first partition plate for moving up and down the push-out plunger, a large number of hard balls capable of being housed and discharged in the guide hole, and the hard balls. 2. The paper box punching device according to claim 1, further comprising a hard ball pressing plate that holds the push-out plunger through the push-out plunger and holds the push-out plunger in a state of protruding from the push-out plunger guide plate.