JPS6020159B2 - Hole cutting device for synthetic resin plate materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hollow cutting device for synthetic resin board material, which is suitable for automation by easily and reliably cutting the hollow to obtain a frame in a cutting board-shaped container made of thermoplastic resin, for example. I have to.

There are various possible uses for frames made by hollow cutting synthetic resin boards, but one example is a cutting board that can be used as a table for eating sushi, or as a container for sushi toppings such as sea urchin and suzuko. A suitable use is as a frame material for constructing a shaped container.

For this chopping board-shaped container, first make frame material B by hollowing out board material A (see Figure 8 [1] and [2]), and then create frame material B.
Next, we joined the leg material ○ by heat fusion so that a part of it protruded slightly toward the inside of the frame material, and sliced the hollowed middle board C thinly (Fig. 8 [3], [4]). ]) The bottom plate C' was inserted into the frame member B and supported by the protruding portions of the leg members (see Fig. 8 [5] and [6]). However, in the case of synthetic resin plates, especially foamed resin plates, they are relatively flexible, so it is extremely labor-intensive to accurately and quickly cut the hollow out of the plate.
There has been a need for an appropriate hollow cutting device for synthetic resin board materials. Therefore, in the present invention, it is possible to perform hollow cutting of synthetic resin board material in a good manner, and the device for this purpose pushes out synthetic resin board materials one by one from the bottom of the stock position to the cutting position for hollowing out. At the cutting position for hollowing, there is an outer frame that holds down the part of the board that corresponds to the frame area, and a member that can partially cover the board to prevent it from moving up and down. A receiving plate that supports the part corresponding to the middle plate to be punched out and a holding plate that prevents the middle plate from floating are arranged, and the board pulpit table is provided with an insertion hole for the hollow cutting blade, and the middle plate is connected to the lifting mechanism as appropriate. It has a punching blade, which has the same number of edges as the number of sides of the rectangular shape, and each blade has a gently tapered curve. At this position, a middle plate dropping member is connected to an appropriate elevating mechanism to separate and drop the middle plate of the board that has been cut into the board from the remaining frame of the board, and a separation position for hollowing is installed. It is characterized by having a hole formed on the surface of the wooden teaching table for removing the middle plate.

Next, embodiments of the present invention will be illustrated below with reference to the drawings.

Reference numeral 1 denotes a frame of the apparatus, 2 a stocker in which synthetic resin plate materials A are stocked, and 11 an extrusion plate serving as a mechanism 10 for sequentially extruding and feeding the plate materials A one by one from the bottom end of the stocker 2; The extrusion plate 11 is a connecting punch 1 inserted into a groove 5 formed in a table 4 that is a part of the frame.
2, and the cylinder mechanism 13 enables reciprocating movement at appropriate timing.

Reference numeral 14 designates an auxiliary guide provided to allow smooth reciprocation of the connecting village 12, and reference numerals 6 and 6 designate feed path guides for the plate material A.

21 is an outer frame equipped with a cutting position 201 for hollowing out, 22 is an insertion hole for a hollowing blade formed in the table 4, 23 is a receiving plate equipped on the supporting joint 24 inwardly from the insertion hole 22, 2
5 is a holding plate suspended from above, and is connected to the outer frame 21 mentioned above.
Holds the frame material B on the plate material A after cutting the blade, and presses the receiving plate 2.
3 supports the middle plate C that is to be hollowed out, and the holding plate 25 prevents the middle plate C from floating together with the hollowing blade described later, and these are positioned at the cutting position for hollowing. It serves as a sandwiching member for the plate material A, and is intended to stabilize the plate material A during hollow cutting.

Next is the Mikawama hollow blade, which is made up of the same number of blades as the number of sides of the rectangular shape (four blades in the case of the figure), and has individual blades 31 that form a gently tapered curve, roughly aligned, and is rectangular. In the case of hollowing, the cutting edge on the short side is higher than the long side, and the cutting edge is inserted later than on the long side.

This hollow cutting blade 30 is raised and lowered by a cylinder mechanism 32 provided above an auxiliary frame 38 that is installed upright on the frame 1. This connecting pin 34
It passes through a fixed platen 35 for the presser plate 25 and is connected to a blade attachment jig 36. 37 indicates a lifting guide punch.

Next, reference numeral 41 denotes a center plate removing member provided at a separation position 40 for hollowing, which follows the cutting position 20 for hollowing, and is connected to a silling mechanism 42 different from the above, and has a blade for hollowing. It is equipped to separate and drop the middle plate C of the plate material A after being inserted from the frame material B of the remaining plate material, and a hole 43 for dropping the middle plate is formed on the table surface at this hollow position, Middle plate C
will fall and be collected. In the figure, numerals 7 and 7 indicate the size adjusting portions of the stocker 2, and 44 indicates a collection inclined plate for the middle plate C.

In order to perform hollow cutting on synthetic resin plate material A using the apparatus configured as described above, first, the plate material A is moved from stocker 2 to 1.
The sheets are fed one by one to the cutting position 20 for hollowing out (see Figures 3 and 4), and here the outer frame 21 is held so that the sheet material A does not move up or down.
, the plate material A is arranged well using the receiving plate 23, the holding plate 25, etc., and the hollowing blade 30 is lowered from above to insert the cutting edge for hollowing (see Figs. 5 and 6). , the hollowing blade 30 is raised and returned to its original position.

In particular, the holding plate 25 reliably prevents the hollow blade 3 from floating and moving after the plate material A is inserted. After inserting the blade or returning the hollow blade 30, the plate material A
The push-out plate 11 is moved back. Then, in the same manner as described above, the plate material A is fed from the stocker 2 to the hollow cutting position 20, and the previously sharpened plate material A is pushed out to the subsequent position. As the plate material A that has undergone hollow cutting is pushed out, and when the plate material A after cutting the blade reaches the separation position 40 for hollowing out of the later model, the dropping member 41 of the middle plate C is lowered to remove the middle plate C. Separate the board from the remaining frame material B and complete the hollowing out (
(see FIG. 7), the frame material B and the middle plate C are each recovered.
Four or more leg materials are heat-bonded to the hollowed-out frame material B,
Furthermore, by combining a thin plate obtained by slicing the middle plate C as a bottom plate, the above-mentioned chopping board-shaped container can be provided.

Furthermore, the frame material can be used not only for cutting board-shaped containers, but also for other purposes such as frame materials, such as picture frames.

In addition, as the synthetic resin board materials to be hollow-cut as described above, polystyrene-based foamed resin boards such as foamed polystyrene, polyolefin-based foamed resin boards such as foamed polypropylene and foamed polyethylene, and polyolefin-based resin and polystyrene-based foamed resin boards are used. Preferred are foamed resin boards made of foamed particles partially grafted with resin, boards made of synthetic wood made of extruded and foamed resin pongee strips and glued together, but polyurethane foam boards, synthetic rubber boards, etc. may also be a non-foamed foamed resin board.

In addition to the illustrated rectangular shape, other rectangular shapes can be realized by using a suitable hollowing blade. Then, to illustrate the maximum dimensions and opening dimensions for a plate-shaped container frame material, the dimensions of each part in Fig. 8 [2] are: abtde Maximum dimension 180 250 12 210 140 Minimum dimension 110 180 12150 90 [side], and the average hollow cutting capacity is 720 sheets per hour.
This means that one sheet can be cut out every five seconds.

As described above, according to the present invention, a hollow blade is inserted into the plate material made of thermoplastic resin, which is fed one by one, so as to provide a reliable hollow cutting action. The frame material and the middle board are not separated by hollowing out,
At the hollow cutting position, the hollow cutting action is performed in a state where the inserted plate material is prevented from moving, such as forcibly pushing the center plate downward with the hollow cutting blade in the direction of separation, or moving upward when the hollow cutting blade returns to the upward position. Since the hollow separation function of removing the middle plate is performed at the subsequent position, it is possible to prevent misalignment of the hollow state, distortion of the punched surface, and rough punching surface. This makes it possible to provide a hollow frame village that is reliable and beautiful in appearance.

Further, according to the present invention, it is possible to easily feed the plate material, and members such as an outer frame, a receiving plate, and a holding plate, which can partially clamp the plate material so that the plate material does not move up and down, are arranged at the hollow cutting position. At the same time, the hollow cutting blade used for punching is composed of the same number of edges as the number of sides of the square shape, and each blade has a gently tapered curve, making it easy to insert the blade for smooth cutting. This is achieved smoothly and reliably, and the frame village and the middle board can be reliably separated from each other at the subsequent part where the middle board is removed.

Therefore, the present invention is a suitable device for automating hollow cutting of synthetic resin plates and for mass production.

[Brief explanation of the drawing]

The figures illustrate an embodiment of the present invention, and FIG. 1 is a schematic perspective view of the device, FIG. 2 is an exploded perspective view of the main parts, and FIG.
Figures to Figure 7 are cross-sectional views showing each process for hollow cutting,
[1] to [6] in FIG. 8 are perspective views showing each process in the case of making a chopping board-shaped container as an example of the use of the hollow cut frame material and the middle board. -2...Stocker, 10...Plate feeding mechanism, 11...Extrusion plate as an example of the feeding mechanism, 13...Schilling mechanism,
20... Cutting position for hollowing, 21...
Outer frame, 22...Insertion hole for hollow blade, 23...
...Receiving plate, 25...Press plate, 30...
...Central cutting blade, 31...Each blade, 32...
... Cylinder mechanism, 40 ... Separation position for hollowing out,
41... Middle plate dropping member, 42... Cylinder mechanism, A... Frame material, C... Middle plate. Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 7 Figure 5 Figure 8

Claims (1)

[Claims] 1. A mechanism is provided to push out the synthetic resin plates one by one from the bottom of the stock position and feed them to the cutting position for hollowing out, and at the cutting position for hollowing out, the plates are partially clamped to prevent them from moving up and down. As the members that can be mounted, an outer frame that holds down the portion of the board material corresponding to the frame material, a receiving plate that supports the portion of the board material that corresponds to the middle plate to be hollowed out, and a holding plate that prevents the middle board from floating are arranged. The plate material mounting table has an insertion hole for a hollow blade, and also has a hollow blade connected to a lifting mechanism as appropriate.This hollow blade is composed of the same number of sides as the hollow square, The blade has a gently tapered curve, and the separation position for hollowing, which follows the cutting position for hollowing, separates the middle plate of the plate that has been cut for hollowing from the remaining frame material of the plate. The invention is characterized in that it is equipped with a member for dropping the middle plate in conjunction with an appropriate lifting mechanism, and that a hole for dropping the middle plate is formed on the surface of the table on which the plate is placed at the separating position for hollowing. A hollow cutting device for synthetic resin board materials.