JPH06254633A - Punching machine - Google Patents

Abstract

PURPOSE:To prevent damage of elevating/lowering means of a punching punch and also to enable high-speed press by elevating/lowering the punching punch with a rodless cylinder which is arranged in the back plate which is joining to the upper surface of a punch plate. CONSTITUTION:The rodless cylinder is constituted of a cylinder 72 and a ram 73 in the back plate 6 of the punch plate 2. When an upper die A is lowered in state where the vertical movement of the punching punch 1 is controlled by situating the head face 74 of the ram 73 on the top face 13 of the punching punch 1 by supplying pressure oil into the cylinder 72, a plate M to be worked is punched with the tip 11 of the punching punch and a punched hole H is formed. When the upper die A is lowered by situating the stepped part 75 of the ram 73 on the the top face 13 of the punching punch 1 with a repulsive spring 76 without supplying pressure oil into the cylinder 72, punching is not executed. Since this device is constituted so that the vertical movement of each punching punch l is non-contactingly and individually controlled using the rodless cylinder, there is no fear for breaking the controlling means by vibration at the time of punching.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is diverse in that holes are formed in various patterns by punching a plate to be processed by selectively restricting the elevation of a plurality of punches supported by a punch plate. The present invention relates to a punching apparatus for continuously forming punched perforated plates having various patterns.

[0002]

2. Description of the Related Art A punched perforated plate in which a pattern such as a parallel pattern, a staggered pattern, a pattern, a character or the like is formed on a plate to be processed such as metal or synthetic resin by a large number of holes such as round holes, square holes, and hexagonal holes Is used as a case material for various building materials and electrical equipment.

As a punching apparatus for making these punched porous plates, for example, an upper die having a plurality of punching punches supported by a punch plate so that it can be moved up and down, and a punching die which is disposed so as to face the punch plate. A lower die having a die plate formed with a die hole through which the tip of the punching punch comes in and out, and a regulation means for individually regulating the elevation of each punching punch is disclosed in Japanese Utility Model Publication No. Sho 49-27074. It is presented in the gazette.

When this punching apparatus is used, a desired punched perforated plate can be freely made by individually controlling the elevation of each punching punch in accordance with the pattern such as a pattern or character to be formed. It is possible.

However, the conventional punching apparatus disclosed in the above publication is mounted in the punch holder such that the top surface of the head of the punching punch is substantially flush with the upper surface of the punch holder. On the punch holder, there is provided a switching body having a head surface for pressing the top surface of the punching punch from above and a step portion for releasing the pressing, and these switching bodies have, for example, a rod shape arranged on a punch plate. A drive device including a fluid pressure cylinder is attached to switch between the head surface and the step portion, and the cylinder rod of the drive device such as the fluid pressure cylinder is directly connected to the pressure head.

Therefore, there is a concern that the vibration at the time of punching may be transmitted to the fluid pressure cylinder via the switching body and the driving device may be damaged.

Further, when an electromagnetic cylinder is used, there is a problem that the drive device may be damaged and the response speed of the electromagnetic valve is slow, so that it is difficult to press at a high speed.

[0008]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is that a drive device such as a conventional fluid pressure cylinder or electromagnetic cylinder presses the head top surface of a punching punch from above and presses the head surface. In the punching device configured to be directly connected to the switching body having the step portion to be released, there is a concern that the cylinder of the drive device may be damaged by the vibration during punching, and the electromagnetic cylinder is used as the drive device. In some cases, high-speed pressing is difficult.

[0009]

SUMMARY OF THE INVENTION According to the present invention, an upper die having a plurality of punching punches vertically inserted through and supported by a punch plate, and a tip of each punching punch disposed so as to face the punch plate. And a lower die having a die plate having a die hole formed therein, and a punching apparatus having a regulating means for individually regulating the elevation of the punching punch, in the punching device as the regulating means. It is characterized by using a rodless cylinder arranged in a back plate arranged on the upper surface, and provides a punching device capable of performing high-speed pressing as well as not having a fear of damaging the lifting control means of the punching punch. Achieve the purpose.

[0010]

The function of restricting the elevation of each punching punch in a non-contact manner by the restricting means consisting of the rodless cylinder arranged in the back plate joined to the upper surface of the punch plate prevents damage to the restricting means due to vibration during punching. To prevent.

[0011]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a sectional view of a punching portion in a first embodiment of the present invention. The punching portion has a plurality of punching punches arranged at predetermined intervals in the left-right direction or the front-rear, left-right direction. Upper mold A having a punch plate 2 supporting 1
And a lower die having a die plate 3 having a die hole 2 through which the tip 11 of each punch 1 comes in and out.

The punch 1 is a punch plate 2
An engaging step portion 2 formed of a large-diameter portion formed on an upper portion of the insertion hole 21 while the bulging head 12 is inserted into an insertion hole 21 formed in the vertical direction so as to be vertically movable.
2 so that the top surface 13 of the head 12 and the top surface 23 of the punch plate 2 are substantially flush with each other, and the tip 11 is supported in a state of protruding from the bottom surface 24 of the punch plate 2 by a predetermined length. ing.

A stripper plate 5 is arranged on the bottom surface 24 side of the punch plate 2.

The stripper plate 5 is moved up and down within a predetermined distance range by a connecting bolt 52 having a bottom end 51 of the stripper plate 5 slidably penetrating the stripper plate 5 and a tip end of which is screwed to the punch plate 2. The stripper plate 5 is freely arranged and is urged downward by an elastic spring 53 interposed between the punch plate 2 and the stripper plate 5. An insertion hole 54 of the punching punch 1 that communicates with 21 is formed so as to penetrate therethrough.

Further, the back plate 6 is closely joined to the upper surface 23 side of the punch plate 2, and the back plate 6 is provided with a regulation means 7 for individually regulating the elevation of the punching punch 1. ing.

The restriction means 7 is mainly provided in the back plate 6 in a lateral direction and is connected to a hydraulic pressure supply means (not shown) such as a hydraulic pressure having a predetermined pressure.
1 and a cylinder 72 arranged in the lateral direction with the insertion hole 21 of the punching punch 1 formed in the punch plate 2 open to the inner wall surface below, and freely slidable in close contact with the cylinder 72. It is composed of a rodless cylinder composed of a ram 73 arranged, and the ram 73 is a punch 1
The head surface 74 for pressing the top surface 13 from above and the stepped portion 75 for releasing the pressing are provided, and the stepped portion 75 is punched by the elastic spring 76 which is normally disposed at the position opposite to the hydraulic pressure supply passage 71. It is located on the top surface 13 of the punch 1.

Further, the back plate 8 is closely joined to the lower surface 32 of the die plate 3 of the lower mold B, and the back plate 8 has a through hole communicating with the die hole 2 formed in the die plate 3. 81 is formed.

In the drawing, reference numeral 77 is a packing attached to the side surface of the ram 73 on the hydraulic pressure supply passage 71 side.

In this embodiment, a work plate M made of metal, synthetic resin or the like is intermittently fed into a gap 9 formed between the stripper plate 5 and the die plate 3, and a press (not shown) connected to the upper die A is provided. The upper die A is lowered by the mechanism to perform a predetermined punching work.

At this time, as shown in FIG. 2A, the head surface 74 of the ram 73 is positioned on the top surface 13 of the punch 1 without supplying pressure oil to the cylinder 72, and the punch 1 is moved up and down. When the upper die A is lowered in a regulated state, the tip 11 of the punching punch 1 has a bottom surface 51 of the stripper plate 5.
The tip 11 of the punching punch 1 projects from the punching hole to form a punching hole H in the plate M to be processed, and as shown in FIG. 2B, pressure oil is supplied to the hydraulic pressure supply passage 71 to repel the ram 73. The upper die A is lowered in a state where the stepped portion 75 of the ram 73 is positioned on the top surface 13 of the punching punch 1 by moving it against the urging force of the spring 76 and the lifting and lowering of the punching punch 1 is canceled. In this case, the tip 11 of the punch 1 is the bottom surface 51 of the stripper plate 5.
It does not stick out and is not punched.

Therefore, by controlling the pressure oil supply to the hydraulic pressure supply passage 71, each punch 1 is punched for each press work.
By determining the presence or absence of punching and performing the punching work, a punched perforated plate on which a desired pattern, pattern, character or the like is formed is continuously formed.

In particular, a punching pattern for forming a desired punching pattern is formed by electronically controlling the elevation control of each punching punch 1 and the feeding of the plate M to be processed based on the binarized data created in advance. The perforated plate can be formed extremely easily.

FIG. 3 is a flow chart showing an example of making a punched perforated plate having a desired perforation pattern based on the binarized data. First, an original diagram of patterns, characters, etc. by an image scanner. Is read to create binarized read data, and the read data is edited by a monitor or the like (step).

Next, a hole die is selected from among the predetermined basic dies, and the hole diameter, pitch, number of holes, etc. are selected and set to determine the punching die suitable for the plate to be processed, and each of the punches is punched. The punching pattern corresponding to 1 is displayed as a grid (step).

Then, sampling is performed to display the read data on a grid. This sampling is automatically performed, for example, a black circle symbol is displayed on the grid of the punching portion, and this is displayed by a monitor or printing (step).

Next, if necessary, the display of the black circle symbols displayed on the grid of the punching section is added, moved and deleted, and finally edited (step), and these data are converted into a bit string to carry out the present invention. It is transmitted to the control unit (not shown) of the punching processing device (step) to perform a predetermined punching.

As described above, in this embodiment, a punched perforated plate having a desired punching pattern formed on the basis of read data obtained by reading the original drawing and binarizing it can be very easily manufactured.

Particularly, since the rodless cylinders arranged in the back plate 6 joined to the upper surface 23 of the punch plate 2 are used to individually regulate the lifting and lowering of each punch 1 in a non-contact manner, during punching. There is no concern that these control means will be damaged by the vibration of.

FIG. 4 shows a second embodiment of the present invention. The overall structure, operation and effect are almost the same as those of the first embodiment shown in FIG. 1, but the stripper plate 5 is a lower mold. The difference is that they are arranged along the upper surface 41 of the die plate 4 on the B side.

FIG. 5 shows a third embodiment of the present invention. The overall structure and operation / effect are almost the same as those of the first embodiment shown in FIG. different.

That is, the regulating means 7 is extended laterally in the back plate 6 and is connected to a hydraulic pressure supplying means 71 such as a hydraulic pressure (not shown) having an appropriate hydraulic pressure, for example.
And a cylinder 72 formed in the vertical direction in communication with the opening of the insertion hole 21 that supports the punching punch 1 exposed on the upper surface of the punch plate 2 and is connected to the hydraulic pressure supply passage 71. The rodless cylinder is composed of a rod-shaped ram 73 which is slidably and closely inserted in the cylinder 72.

In this embodiment, similarly to the above-mentioned embodiment, the work plate M such as metal or synthetic resin is intermittently fed into the gap 9 formed between the stripper plate 5 and the die plate 3 to the upper die A. The upper die A is lowered by a press mechanism (not shown) connected thereto, and a predetermined punching operation is performed.

At this time, as shown in FIG. 6A, pressure oil is supplied to the hydraulic pressure supply passage 71, and the top surface 13 of the punch 1 is pressed and supported by the rod-shaped ram 73, whereby the punch 1 is pressed. When the upper die A is lowered with the lifting and lowering regulated, the punch 1 is punched from the bottom surface 51 of the stripper plate 5.
6 is projected to form a punching hole H in the plate M to be processed, and as shown in FIG.
When the upper die A is lowered in a state where the punching punch 1 can be raised and lowered freely without supplying pressure oil to the punching punch 1, the tip 11 of the punching punch 1 does not project from the bottom surface 51 of the stripper plate 5 and punching is performed. I don't know.

In this embodiment, the ram 73 constituting the rodless cylinder which is the regulation means for the punching punch 1 is rod-shaped and is not complicated as compared with the first and second embodiments, and further, the elastic spring and the like are used. It is not necessary and is advantageous in terms of manufacturing and durability.

FIG. 7 shows a fourth embodiment of the present invention. In the type having the stripper plate 5 on the lower mold B as in the second embodiment, the same restricting means as shown in the third embodiment is provided. It is provided.

[0037]

According to the present invention, a punched perforated plate having a desired perforation pattern can be formed extremely easily and continuously by electronically controlling it based on pre-created binarized data. Of course you can,
Since the rodless cylinder arranged in the back plate joined to the upper surface of the punch plate is used to individually control the lifting and lowering of each punch without contact, these regulating means are damaged by vibration during punching. It is possible to perform punching work at a high speed because the responsiveness is superior to that of a cylinder using a solenoid valve.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a punched portion in a first embodiment of the present invention.

FIG. 2 is an explanatory view of the operation of the first embodiment.

FIG. 3 is a flow chart in an example for making a punched perforated plate based on data binarized using the present invention.

FIG. 4 is a cross-sectional view of a punched portion in a second embodiment of the present invention.

FIG. 5 is a cross-sectional view of a punched portion in a third embodiment of the present invention.

FIG. 6 is an explanatory view of the operation of the third embodiment.

FIG. 7 is a cross-sectional view of a punched portion in a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Punching Punch 2 Punch Plate 3 Die Hole 4 Die Plate 6 Back Plate 7 Restricting Means 72 Cylinder 73 Ram A Upper Mold B Lower Mold

Claims (1)

[Claims] 1. An upper die in which a plurality of punching punches are vertically inserted and supported by a punch plate, and a die hole which is arranged so as to face the punch plate and into which a tip of each punching punch moves in and out. A lower die having a die plate, and a punching device having a regulating means for individually regulating the elevation of the punching punch, in a back plate joined to the upper surface of the punch plate as the regulating means. A punching machine characterized by using arranged rodless cylinders.