JPS63162195A - Trimming die device for foil plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a foil sheet cutting die device for punching a foil sheet, which is an extremely thin workpiece, without causing fringing.

[Conventional technology]

Conventional processing methods for obtaining a processed product with a desired contour from this type of extremely thin foil plate include (1) punching using a normal press machine (2) removing the cutting line by etching. Etching processing is known.

[Problem that the invention seeks to solve]

Since the method (1) above uses a normal press device,
The processing load is excessive for processing extremely thin foil plates, and it is extremely difficult to control and move the processing stroke in units of several micrometers. However, there was a drawback that the occurrence of cracks in the processed part was unavoidable.

Etching processing (2) avoids the occurrence of burrs and enables high-precision processing, but it requires pre-processing steps such as masking of areas other than the cutting line, and the processing speed is slow, making it difficult to process. The disadvantage was that it was costly.

The present invention aims to eliminate the drawbacks of the conventional technology described above, and uses a piezoelectric actuator driven by positive and negative DC applied voltages as a drive source, and can control the drive stroke accuracy in units of 1 μm. A foil plate is punched out using a cutting die device consisting of a pair of upper die device and lower die device arranged on the same axis. We provide a foil sheet cutting die device that can easily punch out foil sheets, can perform processing without creating any burr on the end face of the cutting part, has fast processing speed, has good response, and can perform processing in a fairly short time. The purpose is to

[Means for solving problems]

The present invention provides a cutting die device comprising a pair of upper die device and lower die device disposed on the same axis for punching a foil plate as a workpiece, the upper die device and the lower die device. A foil plate comprising a drive mechanism that independently drives each punch, and an adjustment mechanism that freely adjusts the gap between an upper die device and a lower die device into which the foil plate is inserted. This is a cutting die device.

[Effect]

The present invention uses an actuator that can control the stroke accuracy of the drive with high precision as a drive mechanism for driving the punch. Although a high-precision actuator using hydraulic pressure can be used as the actuator, in the present invention, the drive source is a piezoelectric actuator that is driven by the displacement of a piezoelectric element by positive and negative DC applied voltages, so that it can be used with the upper device. Each punch in the lower die device can be driven independently and with high precision.6 According to the present invention, punching of extremely thin foil plates can be easily performed, and the punching process can be performed without causing any burr on the cut end surface. can be performed, and the drawbacks of this type of conventional technology can be overcome.

〔Example〕

FIG. 1 is a partially sectional front view showing an embodiment of the present invention, and FIG. 2 is an enlarged view of part 5 of FIG. 1, which is an explanatory view of processing by the apparatus of the present invention.

In FIG. 1, a foil plate 2, which is a workpiece, is to be punched by a cutting die device 1 consisting of a pair of upper die bag W6 and a lower die device 8 disposed on the same axis 4. , shows the state of the foil plate 2 inserted into the gap l·0 between the upper mold device 6 and the lower mold device 8 before processing.

The upper mold device 6 and the lower mold device 8 have a die 16 having a punching hole shaped to be punched, and a punch 18 that can fit into the punching hole and move. It is inserted into a ram 22 of a drive mechanism 12 and fixed with a screw 24, whose drive source is a piezoelectric actuator driven by displacement due to positive and negative DC voltages applied to a piezoelectric element.

The die 16 of the upper mold device 6 is provided with at least two or more connectors 28 having guide holes 26 at one end, and the drive mechanism 12 is coupled to the other end of the connectors 28 via a collar 30. They are tightened together with nuts 32 to form an upper mold device 6.

The die 16 of the lower die device 8 has the aforementioned guide hole 26 at one end.
At least two or more guide rods 34 having guide portions that fit into each other are attached with screws 36, and the drive mechanism 12 is combined with the other end of the guide rods 34, and the drive mechanism 12 is combined with the nut 32 to tighten the lower die device. 8.

The guide hole 26 of the connector 28 of the upper mold device 6 is fitted into the guide portion of the guide rod 34 of the lower mold device 80, and the spacer is removed after fixing it to the guide portion with the screw 36 through a spacer of a desired thickness. This constitutes an adjustment mechanism 14 that provides an air gap IO.

The entire adjustment mechanism 14 is supported by a support device (not shown).
An upper die device 6 and a lower die device 8 which are fixed together by screws 36 are supported, and constitute the cutting die device 1 of the present invention.

The ram 22 of the drive mechanism 12, which uses a piezoelectric actuator as a drive source, moves in and out according to positive and negative DC applied voltages from the connected control power source 20, and the upper die device 6 and the lower die device 8 attached to the ram 22 move in and out. The punch 18 can be driven independently.

A method for processing the foil plate 2 using the cutting die device 1 of the present invention configured as described above will be explained with reference to FIG.

In FIG. 2, (A) represents step 1. (B)) Step 2. (C) is step 3. (D> indicates step 4.

(In step 1 of A>, the gap width is adjusted by the adjusting mechanism 14 in the method described above, and the foil plate 2, which is the workpiece, is inserted into the gap 10 of the cutting die device l to be punched.) This shows the state before processing the plate 2, with the punches 18 and 18 of the upper die device 6 and the lower die device 8 in the reference position.

In step 2 of (B), a DC applied voltage is applied to the piezoelectric actuator of the upper die device 6, and the punch 18 attached to the drive device 12 is inserted into the foil plate 2 by approximately 1/2 of the thickness of the foil plate 2. Cut out half of the foil plate 2.

Since the piezoelectric actuator is driven approximately in proportion to the applied voltage, by adjusting the applied voltage, the stroke of the punch 18 can be controlled with high accuracy in units of 1 μm.

In step 3 of (C), the punch 18 of the upper die device 6
is returned to the reference position, and the punch 18 of the lower mold device 8 is driven to punch into the foil plate 2 by approximately 1/2 of the thickness of the foil plate 2. In this state, the foil plate 2 has already been punched from the top and bottom, so the punching process is completed, but it is inconvenient to take out the foil plate 2 from the cutting die device l if it continues as it is (D > to the state of step 4.

In step 4 of (D), the upper mold device 6 and the lower mold device f
Step 2 of (B) on each piezoelectric actuator with 8. (
Each punch 18, 18 is driven by applying a voltage lower than the voltage used during punching in Step 3 of C), so that the punches 18 and 18 are at the same height as shown.

Furthermore, each punch 18.18 returns to its reference position, takes out the processed foil plate 2, returns to step 1 in (A), and continues punching out the foil plate 2 as described above. .

Since the foil plate 2 is punched in a half-blanket state from the top and bottom, there is no occurrence of burrs that occur when punching in one direction using a conventional press device, and as shown in FIG. 2(C),
As shown in (D), a cut end surface free of burrs can be obtained.

Further, it is possible to provide a cutting die device 1 for the foil plate 2 that has a fast processing speed, good responsiveness, and can perform highly accurate cutting in a considerably short period of time.

〔Effect of the invention〕

In the present invention, a punching die device is constructed by arranging a pair of upper die device and lower die device on the same axis, each punch is driven independently by a drive mechanism, and the foil plate is The foil plate punching device is configured with an adjustment mechanism that freely adjusts the gap between the upper die device to be inserted and the upper die device, so the stroke accuracy of each punch drive can be controlled with high precision independently. By half-cutting an extremely thin foil plate alternately from the top and bottom, the punching process can be easily performed without causing any burr on the cut end surface.

Furthermore, it is possible to provide a foil sheet cutting die device that has a fast processing speed, good responsiveness, can perform highly accurate cutting in a considerably short time, and eliminates the drawbacks of conventional techniques.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing an embodiment of the present invention, and FIG.
The figure is an enlarged view of S in FIG. 1 and is an explanatory diagram of processing by the apparatus of the present invention. (A) is an enlarged view of S in FIG. (B) is step 2. (C
) is step 3. (D) shows step 4. 1 Cutting die device, 2 foil plate (workpiece), 4 axes, 6
Upper mold device, 8 Lower mold device, 10 Gap, 12 Drive mechanism (piezoelectric actuator), 14 Adjustment mechanism, 16
Die, 18 Punch, 20 Control power source, 22 Ram, 26 Guide hole, 28 Connector, 34 Guide rod.

Claims (1)

[Scope of Claims] 1) A cutting die device comprising a pair of an upper die device and a lower die device disposed on the same axis for punching a foil plate as a workpiece, wherein the upper die device and a drive mechanism that independently drives each punch of the lower mold device, and an adjustment mechanism that freely adjusts the gap between the upper mold device and the lower mold device into which the foil plate is inserted. A cutting die device for foil plates. 2) The device according to claim 1, wherein the drive mechanism for driving the punch is a drive mechanism whose drive source is a piezoelectric actuator driven by positive and negative DC applied voltages. type device.