JPH0346280B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a separating device for an automatic punching machine for paperboard, etc.

Generally, paper products such as cardboard are manufactured by punching a sheet of paperboard into a specific shape using an automatic punching machine and folding the punched paperboard together.

Conventionally, this type of automatic punching machine supplies paperboard 1 to a punching device 3 through a feeder 2, as shown in FIG.
A cut is made between the forming part 4 and the combing part 5 in the paperboard 1 while leaving a joint part, and then the paperboard 1 is conveyed to a separation device 6, the forming part 4 and the scrap part 5 are separated from the cut, and the forming part 4 is stored in a collection device 7, and the waste portion 5 is conveyed to a belt conveyor 8 and a waste storage device 9.

This separation device 6 has a lower mold that supports the waste portion 5 and an upper mold 9 that presses the molding portion 4, and a punched hole (not shown) in the lower mold and a pressing portion 10 of the upper mold 9 are formed respectively. , a large number of pins are arranged so as to have approximately the same shape and size as the molding part 4, and the paperboard 1 conveyed to the upper surface of the lower mold is pressed by the pressing part 10 of the upper mold 9 to punch out the molding part 4. It is separated from the waste section 5 by dropping it through the hole.

However, with this separation device 6, it is necessary to attach and remove pins for the upper and lower molds (hereinafter referred to as pin alignment work) each time the product shape changes.

This operation requires a large number of pins and must be arranged accurately along the shape of the molded product, which is troublesome and takes a long time. As a result, the machine has to be stopped for a long time, which results in poor machine availability.
In the case of a small number of products, the upper and lower molds are used less often, so it is not economically advantageous.
Furthermore, after the molded parts 4 are separated from the waste part, they are loaded onto the collecting device 7 from the punched hole of the lower die in a substantially horizontal state while being subjected to air resistance, so that the edge of each molded part 4 4a is uneven and inconvenient to handle.

This problem is especially serious in the case of a small molded part 4.

In view of the above points, the first object of the present invention is to provide a separation device that is easy to manufacture and easy to handle.
purpose.

The second objective is to obtain a separating device that is lightweight and has sufficient strength and rigidity.

The third purpose is to prevent the boundary portion from being damaged even if the waste portion between the molded portions is as thin as a line.

The fourth purpose is to eliminate irregularities in the edges of the molded parts loaded on the collecting device.

A fifth object is to provide an inexpensive separation device that is economical even when used in production with limited demand.

The present invention is a separation device for dropping a molded part of a paperboard with cuts made between the molded part and a waste part, and which separates a plurality of convex molds from a single plywood board.
A plurality of concave molds are formed at the same time to fit therein and to be connected via a linear environment part, and the concave molds are used as a support for the scrap part, and the convex mold is used as a push base for the molded part, and the lower surface around the concave mold is used. A separating device for an automatic punching machine is characterized in that a guide plate for when the molding part falls is fixed to at least the linear boundary part with an adhesive.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4.

A single flat plate 10, for example, an inexpensive plywood board, is cut using a laser beam to match the shape of the molded portion 12 of the paperboard 11 to simultaneously form a convex mold 13 and a concave mold 14.

This convex mold 13 includes three convex molds 13a, 13b,
13c, and the concave mold 14 consists of three concave molds 14.
a, 14b, 14c, each concave mold 14a, 14
b, 14c are linear boundary parts 15a,
15b.

These boundary parts 15a and 15b are the parts on which the scrap part 20 of the paperboard 11 is placed.
0 is formed to be the minimum in order to make effective use of the paperboard 11, so correspondingly,
The boundary portions 15a to 15b are also thin and formed in a linear shape.

Due to the above-mentioned circumstances, the boundary portions 15a to 15b are linear, but the boundary portions must reliably support the waste portion 20 during the paperboard separation operation.

If the waste portion 20 is not properly supported, the separation of the moldings may be incomplete, or the moldings may not be properly separated, such as tearing of the moldings.

When such a situation occurs, it often occurs that the machine stops operating or significantly reduces operations.

When the waste portion 20 is linear as shown in FIG. 3, especially these concave environmental portions 15a to 15b
Considering this, the concave mold needed to be made of metal casting. However, this casting is heavy and expensive to produce, so it is only suitable for mass production.

Therefore, when using a concave shape made of plywood, a guide plate 16, for example, a metal plate such as a crease blade used to create crease lines at the same time as the punching process, is attached with adhesive 16c to the lower surface of the boundary parts 15a to 15b. This guide plate 16 may be provided on a part or all of the periphery of the concave shape, but the important thing is that the guide plate 16
6 maintains contact with the plywood board at all points along its entire length to ensure secure fixation and support of the plywood board.

When the plywood and guide plate 16 are bonded as described above, they work together to provide a firm support for the paperboard being separated, forming a secure and strong joint.

FIG. 4 shows the convex die 13 and the concave die 14 attached to the separation device 26 of an automatic punching machine. In this figure, 17 is a mounting base for the concave die 14, and 18 is a conveyance device for the paper board 11. , 19 is a collection device of the forming section 12, 20 is a waste section of the paperboard 11,
21 is a mounting base for the convex type 13, 22 is a mounting base 21
It is a cam mechanism that moves up and down.

Hereinafter, the operation of this embodiment will be explained with reference to this figure.The paperboard 11, which has been cut into the forming part 13 and the scrap part 14 by a punching device (not shown), leaving the joint part, is transferred to the conveying device 18. The paperboard 11 is conveyed to the separating device 26, and the forming portions 12a, 12b, 12c of the paperboard 11 are located directly above the concave molds 14a, 14b, 14c.

Next, the mounting base 21 is lowered by the operation of the cam mechanism 22, and the convex molds 13a, 13 fixed to the mounting base 21 are lowered.
b, 13c are molded parts 12a, 12 of the paperboard 11
b, 12c, and the molded part 12 becomes the concave mold 14.
a, 14b, and 14c.

The peripheral edges of the molded parts 12a, 12b, 12c fall along the guide plates 16a, 16b due to their own weight, are received within the guide plates 16a, 16b, and are loaded on the storage device 19, but the guide plates Even if it is dropped without being caught within the guide plates 16a, 16b, it will fall along the guide plates 16a, 16b, so there is no risk that the molded parts 12a, 12b, 12c will become uneven.

The guide plates 16a, 16b are formed at narrow boundary portions 15a, 15b to prevent waste of material.
It also plays the role of reinforcing the mold 14 and preventing the concave mold 14 from being destroyed.

Also, at this time, the scraps 20 left on the concave mold 14
is conveyed to a waste collection section (not shown) by a conveying device.

In this invention, a plurality of convex molds and a plurality of concave molds that fit with the convex molds and connect with the concave molds linearly through the boundary are simultaneously formed from a single plywood board, so that both molds can be manufactured in a shorter time. It can be done easily and at a lower cost.

In addition, it is relatively lightweight compared to conventional metal molds or molds that use pins, so it saves energy and reduces noise.
The moment of inertia that causes vibration can be reduced.

Further, since the boundary portion is formed in a linear shape, a paperboard having a thin linear waste portion can be separated into a forming portion and a waste portion.

Therefore, the present invention is extremely effective as a separating device for dropping paperboard moldings with a reduced amount of waste.

Furthermore, if the convex and concave molds are manufactured in advance, the mold switching process can be performed more easily and in a shorter time than when changing the mold by aligning a large number of pins.

Furthermore, since a guide plate for when the molding part falls is fixed to at least the linear boundary part with adhesive, the boundary part is reinforced and has the same strength and rigidity as a metal mold. The molded parts that fall from the stack fall straight down along the guide plate. Therefore, the edges of each molded part loaded on the collection device are always aligned, so there is no need to perform an operation to align them. be. That is, this guide plate serves both as a guide for the molded part and as reinforcement for the concave mold.

[Brief explanation of drawings]

Figures 1 to 3 are examples of the present invention. Figure 1 is a perspective view showing a convex type, Figure 2 is a perspective view showing a concave type, and Figures 3 and 2 are cross-sectional views taken along the - line. , FIG. 4 is a diagram showing a state in which the convex mold and concave mold of the present invention are attached, and FIG. 5 is a front view showing a conventional example. 10...Flat plate, 13...Convex type, 14...Concave type,
15... Boundary part, 16... Guide plate.

Claims (1)

[Claims] 1 A separating device that drops a paperboard molded part with a cut between the molded part and the scrap part, which has a protrusion that has the same shape as a plurality of molded parts simultaneously formed from one plywood board, and a convex that fits into the molded part. and a plurality of concave molds connected through a linear boundary, the concave molds serve as a support for the scrap part, and the convex molds serve as a push base for the molding part, and at least the A separating device for an automatic punching machine, characterized in that a guide plate for guiding a molded part when it falls is fixed to a linear boundary part with an adhesive.