JPH07276294A - Plucking device of sheet already stamped out - Google Patents

Abstract

PURPOSE:To conduct plucking processing in regard to a stamped-out sheet having book paper portions of various shapes and in addition to conduct easily and in a short time the change of the arrangement position of a stamping-out mold. CONSTITUTION:A stamping-out mold 7 is furnished onto to a base 1a by being inserted by a fixation rail 12. When furnished, a stamping-out mold side rack RN and base side racks RB come into mutual mesh, and the horizontal movement of the stamping-out mold 7 is regulated, and positioning is carried out. Also, the balls 19 of plungers 17 fit into grooves 21 under the spring force of springs 20, and the upward coming-off of the stamping-out mold 7 is prevented. In a case in which the arrangement position of the stamping-out mold 7 is changed after the shape of a book paper portion, the drawing/inserting of the stamping-out mold 7 alone in regard to the fixation rail 12 is sufficient.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device for separating a main paper portion from a residual paper portion with respect to a punched sheet having a main paper portion and a residual paper portion separated by a punching line.

[0002]

2. Description of the Related Art Paper containers, so-called paper packs, are known as containers for storing liquids for drinks and the like. Usually, such a paper container is manufactured through each process such as a printing process, a punching process, a laminating process, and a bonding / assembling process. In the printing process, appropriate patterns, characters, etc. are printed on the sheet material.

In the punching process, a punching process is applied to a sheet material to form a punching line, and the punching line separates a main paper portion used as a paper container and a residual paper portion that is an unnecessary portion other than that. It In addition,
In this punching step, the entire area around the main paper portion is not completely punched, but the joint portion is partially left. Therefore, in this punching process, the main paper portion is not separated from the remaining paper portion.

In the kneading step, the sheet having been punched, that is, the sheet having been punched, is cut at the above-mentioned joint portion to separate the main paper portion from the remaining paper portion. Such separation of the actual paper portion may be referred to as "tape". In the pasting and assembling process, the separated main paper portion is folded into a paper container shape and further adhered to produce a target paper container. Heretofore, the above-mentioned kneading process has hardly been mechanized, and is often performed manually. In this case, many punched sheets could not be efficiently subjected to the kneading treatment.

As a small number of examples, as a device for mechanically carrying out the kneading process, conventionally, a pair of punched sheets having a shape matching each of the main sheet portion and the remaining sheet portion are provided so as to face each other. There is an apparatus in which a dedicated punching die is provided and a punched sheet is opened and closed while being sandwiched by these punching dies to cut the main paper portion from the remaining paper portion.

However, this kneading apparatus is costly because it is necessary to manufacture a die that conforms to the shapes of the main paper portion and the remaining paper portion. Further, when manufacturing different kinds of paper containers, it is necessary to prepare various kinds of punching dies that match the shapes of the individual main paper portion and the remaining paper portion having different shapes, which further increases the cost.

As another conventional kneading device, a plurality of pins having a general shape such as a columnar shape and a prismatic shape are prepared, and these pins are matched with the shape of the main sheet portion or the remaining sheet portion of the punched sheet to be mounted on the base. There are also those that are fixed to the, and use the pins as a die to perform the kneading treatment. However, in this kneading device, one pin for the die is fixed on the base by bolts and nuts one by one, so in order to assemble each pin so as to match the shape of the main paper part or the remaining paper part. It took a very long time.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the conventional kneading apparatus, and it is possible to appropriately change the arrangement positions of a plurality of general-purpose cutting dies. Accordingly, it is an object of the present invention to provide a kneading device that can be applied to punched sheets having various shapes of main paper parts, and that can change the arrangement position of the cutting die easily in a short time.

[0009]

In order to achieve the above-mentioned object, a punching sheet rubbing apparatus according to the present invention comprises a base and a main sheet portion or a residual sheet portion facing each other when mounted on the base. Either a die for positioning, a die-side rack provided on the die, a fixed rail provided with a base-side rack provided on the base and meshing with the die-side rack, and either the die or the fixed rail. It is characterized in that it has elastic fitting means which is provided on one side and is fitted on the other side of the punching die or the fixing rail under elastic pressing force.

The elastic fitting means can be constituted by, for example, a pressing element that comes into contact with either the punching die or the fixing rail, and a spring or other elastic force urging means that elastically urges the pressing element. . As a pressing unit having such a structure, there is one called a ball plunger.

The punching rack and the base rack can be constituted by a single row of racks. In addition to the configuration, either one of the racks may be configured by two rows of racks, and one of the racks may be provided so as to be movable relative to the other. With this configuration, the pitch between teeth of the two rack rows can be adjusted.

As a desirable configuration, the rack constituted by two rows of racks may be a rack on the base side, and pitch adjusting means for adjusting the inter-tooth pitch of the rack rows may be provided on the base. As the pitch adjusting means, for example, a configuration can be used in which one end of the movable rack is brought into contact with the adjusting screw and the other end is pressed by elastic force urging means such as a spring.

The punching dies are arranged on both front and back sides of the punched sheet, or on only one side. When arranging the cutting dies on both sides of the sheet, place one of the dies facing the main paper,
The other cutting die is arranged so as to face the remaining paper portion.

[0014]

The kneading apparatus of the present invention can be applied to punched sheets having various shapes of the main paper portion by appropriately changing the arrangement positions of a plurality of general-purpose cutting dies such as cylinders and prisms. The cutting die is mounted on the base by inserting it into the fixing rail. When the punching die is inserted into the fixing rail, the punching die side rack and the base side rack mesh with each other, and the position of the punching die on the base is positioned. Also, when the installation is completed,
The punching die and the fixing rail are firmly coupled by the action of the elastic fitting means, and thus the fall of the punching die in the fixing rail direction is prevented. When changing the arrangement position of the punching die, the punching die is once pulled out from the fixing rail, further changed in position and inserted again into the fixing rail.

[0015]

EXAMPLE FIG. 6 shows an example of a kneading apparatus according to the present invention. This kneading device has a lower base 1a and an upper base 1b which are arranged to face each other. Either one or both of the lower base 1a and the upper base 1b are driven by an elevator drive device (not shown) to relatively reciprocate up and down in a direction toward or away from each other.

The punched sheet 2 which is the object of the rubbing treatment is supplied between the bases 1a and 1b. The punched sheet 2 has already been subjected to punching processing in another step, and as shown in FIG. 7, the sheet 2 is a real paper portion which is divided by a punching line L and is later formed into a paper container. 3 and a remaining paper portion 4 other than that are formed. The punching line L is composed of a cut portion 5 penetrating the punched sheet 2 and a joint portion 6 which is not cut, and the main paper portion 3 is connected to the remaining paper portion 4 by the joint portion 6. .

In FIG. 6, on the upper surface of the lower base 1a,
A plurality of lower punching dies 7 are detachably fixed, and further, a plurality of upper punching dies 8 are detachably fixed to the lower surface of the upper base 1b. The upper end surface of the lower punching die 7 is arranged at a position facing the main paper portion 3 of the punched sheet 2, while the lower end surface of the upper punching die 8 is arranged at a position facing the remaining paper portion 4.

When the lower base 1a and the upper base 1b move close to each other, the lower punching die 7 presses the main paper portion 3 upward, while the upper punching die 8 moves the remaining paper portion 4
Is pressed in the opposite direction, that is, downward. By this pressing process, the main paper portion 3 is removed from the remaining paper portion 4 and separated. The target paper container is formed by appropriately folding the separated main paper portion 3 and further adhering the appropriate portions.

The actual paper portion 3 of the punched sheet 2 has various shapes depending on the target shape of the paper container. In the case of subjecting the main paper portion 3 having a different shape to the kneading treatment, the fixing position on the lower base 1a of the lower punching die 7 and the fixing position on the upper base 1b of the upper punching die 8 are set to the main paper portion. Three
It is necessary to change the shape so as to match the shape of the remaining paper portion 4. In the kneading apparatus of the present embodiment, the position of the cutting dies 7 and 8 can be changed very easily in a short time by making the fixing structure for fixing the cutting dies 7 and 8 to the bases 1a and 1b as follows. I can do it.

Hereinafter, the fixing structure of the lower punching die 7 and the upper punching die 8 will be described, but since the fixing structures for both are the same, only the lower punching die 7 will be described as a representative.

As shown in FIGS. 1 and 2, the lower base 1
The fixed base 9a is installed at the left end of a and the fixed base 9b is installed at the right end. Each fixed base is
It is fixedly installed by bolts, hydraulic cylinders, pneumatic cylinders, and other fastening means. A fixing rail 12 including a fixed rack member 10 and a movable rack member 11 is provided between the fixed bases 9a and 9b.
The fixed rack member 10 is fixed to the fixed bases 9a and 9b by bolts or other fixing means so as not to move. The movable rack member 11 is supported by an appropriate support mechanism so as to be slightly movable in the direction indicated by the arrow AA ′ in FIG. 2, but immovable in the vertical direction in FIG. The side surface of the fixed rack member 10 and the movable rack member 11
Grooves 21 as shown in FIG. 3 are formed on the side surfaces of the entire area in the longitudinal direction.

In FIG. 2, a plunger 13 is provided inside the left fixed base 9a. The plunger 13 has an elastic force urging means such as a spring built therein, and the pressing element 13a at the right end is urged rightward in the drawing by the elastic force urging means. The pusher 13a is in contact with the left end of the movable rack member 11. An adjusting screw 14 is screw-fitted inside the right fixed base 9b. The left end of the adjusting screw 14 is in contact with the right end of the movable rack member 11, and the right head is provided with a lever 15. A base side rack R _B is formed on the upper surfaces of the fixed rack member 10 and the movable rack member 11.

A holder 16 is fixed to the bottom of the punching die 7 by bolts or other fixing means. As shown in FIG. 3, a linear recess Q extending in the direction perpendicular to the paper surface is formed in the center of the inside of the holder 16. Further, four plungers 17 as elastic fitting means are inserted into the holder 16 by screw fitting. Each plunger 17 has a screw body 1 having a screw formed on the outer peripheral surface.
8, a ball 19 rotatably provided at the tip of the screw body 18, and a ball 19 stored inside the screw body 18.
Is constituted by an elastic force urging element that presses the outside, for example, a spring 20. Part of the ball 19 is the holder 1
6 protrudes into the concave portion Q by an appropriate distance. This protruding distance can be adjusted by adjusting the screw-in length of the screw body 18.

On the bottom surface of the die 7, as shown in FIG.
A die side rack R _N is provided. The punch side rack R _N includes a fixed rack member 10 and a movable rack member 1.
It is adapted to engage with each of the base side racks R _B formed on the upper surface of 1. The inter-tooth pitch of the racks R _N and R _B is set to, for example, 1 to 5 mm, preferably 2 to 3 mm.

Since this embodiment is constructed as described above, when carrying out the scooping operation, one or a plurality of punching dies 7 are inserted on the fixing rails 12 according to the main paper portion of the sheet. Line up. When inserting the cutting die 7 to the fixed rail 12, as shown in FIG. 4, the meshing cutting die side rack R _N and the base-side rack R _B and each other, thereby trimming die 7 is positioned horizontally. Further, the holder 16 provided on the bottom of the punching die 7 has a side surface of the fixing rail 12, that is, a side surface of the fixed rack member 10 and the movable rack member 11.
The ball 19 of the plunger 17
Fits into the groove 21. As a result, the vertical movement of the die 7 is restricted.

Here, in FIG. 2, when the adjusting screw 14 incorporated in the fixed base 9b is turned by using the lever 15, the movable rack member 11 moves horizontally on the base 1a, whereby the fixed rack is moved. Rack R of member 10
Offset with respect to the tooth pitch between the racks R _B of _B and the movable rack member 11 occurs. At this time, in FIG. 5, the tooth surface 11g of the movable rack member 11 moves until it comes into contact with the tooth surface 7g of the meshing die side rack R _N , and when the adjusting screw 14 is further tightened, the movable rack member 11 moves. The cutting die 7 is moved from the position where it is positioned to a small amount such that it does not affect the rigidity, and the tooth surface 7 of the cutting die side rack R _N is moved.
g ′ comes into contact with the tooth surface 10g of the fixed rack member 10.

Due to the meshing of the respective tooth surfaces as described above, the die side rack _RN is sandwiched between the tooth surface of the fixed rack member 10 and the tooth surface of the movable rack member 11, so that the die 7 is It is fixed without rattling. Since the rattling is eliminated, the fixing force in the horizontal direction and the vertical direction is increased, so that the die 7 is prevented from sagging in the rail 12 direction. Further, since the movable rack member 11 is moved by the adjusting screw 14, a plurality of punching dies 7 arranged in one row are locked at once, and it is not necessary to individually incorporate a locking mechanism into the punching dies 7. Therefore, the outer dimensions of the die 7 can be minimized, and the manufacturing cost can be reduced. The position return of the movable rack member 11 is
By loosening the adjusting screw 14, the elastic force of the plunger 13 works, which is very simple.

The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the embodiments and can be variously modified within the technical scope described in the claims.
For example, in the above-described embodiment, as shown in FIG. 6, the punching dies 7 and 8 are provided on the upper and lower sides of the punched sheet 2, but the lower punching die 7 or the upper punching die 8 can constitute the kneading device. . The shapes of the individual cutting dies 7 and 8 can be formed in any shape other than the illustrated cylindrical shape, for example, a quadrangular shape. In the above embodiment, the plunger 17 is provided on the die 7 side, but it may be provided on the fixing rail 12 side. Further, in the above embodiment, the inter-tooth pitch of the base side rack R _B can be adjusted, but the inter-tooth pitch of the punching side rack R _N can be adjusted.

[0029]

According to the sheet kneading apparatus of the first aspect, the kneading process is performed on the punched sheet having various shapes of the main paper portion by appropriately changing the arrangement positions of the plurality of punching dies. be able to. Moreover, since the disposing position of the die can be changed simply by inserting and removing the die with respect to the base, the disposing position of the die can be easily changed in a short time.

Generally, regarding sheets, there are small lot items with a small number of sheets, so-called multiple-sided items in which a large number of main paper portions are formed on one sheet. When performing the kneading work on these sheets using the conventional kneading device, it takes a long time to replace the cutting die when changing the item,
It wasn't practical. On the other hand, according to the present invention, since the position of the punching die can be changed very easily and in a short time, it is particularly effective for the work of rubbing the multi-faced items and the like as described above.

Further, since the vertical movement of the die is restricted by the elastic fitting means, it is possible to prevent the die from falling out, falling down, tilting, etc. at the time of transposing the sheets. It is possible to carry out stable work.

According to the punching sheet kneading apparatus of the second aspect, the punching die can be fixed more firmly.

According to the punching sheet rubbing device of the third aspect, by adjusting the pitch between the teeth of the base side rack, a plurality of cutting dies that mesh with the base side rack are locked by a single locking operation. be able to.

According to the punching sheet rubbing device of the fourth aspect, the main sheet portion and the remaining sheet portion of the punched sheet are pressed in the opposite directions to separate the main sheet portion cleanly at the punching line. it can.

[0035]

[Brief description of drawings]

FIG. 1 is a front view showing a main part of an embodiment of a punched sheet scooping apparatus according to the present invention.

FIG. 2 is a plan view of the sheet kneading apparatus.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a cross-sectional view showing a state in which the cutting die is mounted on the base.

FIG. 5 is a diagram schematically showing an engaged state of racks.

FIG. 6 is a perspective view showing an entire embodiment of a punched sheet scooping apparatus according to the present invention.

FIG. 7 is a plan view showing an example of a punched sheet.

[Explanation of symbols]

1a, 1b Base 2 Stamped sheet 3 Main paper portion 4 Remaining paper portion 5 Cut portion 6 Connecting portion 7 Lower punching die 8 Upper punching die 9a, 9b Fixed base 10 Fixed rack member 11 Movable rack member 12 Fixing rail 13 Plunger 13a Presser 14 Adjusting screw 15 Lever 16 Holder 17 Plunger 18 Screw body 19 Ball 20 Spring 21 Groove L Punching line Q Recessed R _N Die side rack R _B Base side rack

Claims (4)

[Claims] 1. A punched sheet having a main paper portion and a residual paper portion separated by a punching line,
In a kneading device that separates the main paper portion from the residual paper portion, a base, a cutting die that is located on the base so as to face the main paper portion or the residual paper portion, and a cutting die side rack provided on the cutting die. And a fixing rail having a base side rack which is provided on the base and meshes with the punching die side rack, and at least one of the punching die and the fixing rail. A punching sheet kneading device, characterized in that it has elastic fitting means which is fitted to the other under elastic pressing force. 2. The punching sheet rubbing apparatus according to claim 1, wherein either the punching rack or the base side rack has two rack rows, and these rack rows adjust the inter-tooth pitch. The punching device for punching sheets is characterized in that they can move relative to each other. 3. The punched sheet kneading apparatus according to claim 1, wherein the base side rack has two rows of racks,
The rack rows are movable relative to each other in order to adjust the inter-tooth pitch, and a pitch adjusting means for adjusting the inter-tooth pitch of the rack rows is provided on the base. apparatus. 4. The punching sheet kneading apparatus according to claim 1, wherein:
The cutting dies are composed of a pair of dies facing each other, and each of the dies is mounted on each of a pair of bases facing each other, one of the dies facing the main paper portion, and the other of the dies facing the remaining paper portion. A punching device for punching sheets, which is characterized by: