WO2003078114A1

WO2003078114A1 - Punching device

Info

Publication number: WO2003078114A1
Application number: PCT/JP2003/002948
Authority: WO
Inventors: Tetsuya Oketani; Mitsutaka Hori
Original assignee: Howa Machinery, Ltd.; Hori Corporation; Japan Science And Technology Agency
Priority date: 2002-03-15
Filing date: 2003-03-12
Publication date: 2003-09-25
Also published as: TWI268205B; CN100584551C; JP4311908B2; JP2003266382A; CN1642700A; TW200305489A; KR20040093737A; KR100616506B1

Abstract

A punching device, wherein punch heads (22) are supported by the punch base (21) of a punch unit (7), air cylinders (24) are lifted between a punching position and a waiting position, the output shafts (36) of hammer mechanisms (29) are inserted into the punch heads (22), punch pins are installed at the lower ends of the output shafts (36) so as to be removed to a die (12) side, work rise prevention caps (39) are installed at the lower end parts of the punch heads (22) so as to be removed to the die (12) side in order to form a small space for work transfer between the caps (39) and the dies (12) at the time of punching, the punch unit (7) is raised to a pin replacement position by an air cylinder (17), the caps (39) are removed, and the punch pins (28) are replaced, whereby the punch pins can be easily and rapidly replaced without removing the punch heads.

Description

Perforation device Technical field

The present invention relates to a punching device for making a hole in a sheet-like work such as a ceramic green sheet and a film for flexible substrates before lamination. Background art

In this type of drilling device, it is necessary to replace the punch pin if the punch pin is worn, broken or the hole diameter changes. If the hole diameter changes, replace the die. In the case of this pin replacement, conventionally, as disclosed in JP-A-11-254395 or JP-A-2000-108088, the punch head is removed together with the pan-tu- nite from the body of the drilling apparatus. After replacing the punch pin outside the machine, attach the punch unit to the machine, try a trial, and adjust the height of the punch pin.

After aligning the punch pin with the die, the operation was resumed after the inspection was confirmed.

For this reason, according to the conventional punching device, it takes time to replace the punch pin, the loss time becomes long, the operation rate decreases, and there is a problem that it is difficult to desorb the heavy pan-tunit.

Therefore, an object of the present invention is to provide a punching device capable of exchanging punch pins easily and quickly without removing the punch head.

In order to solve the above-mentioned problems, in the drilling equipment of the present invention, a pan-tunit is installed above the work placement space where the sheet-like work is placed. The die unit is installed below the work placement space, the die unit is provided with a die, the punch unit is provided with a punch head, and the punch head is provided with a punch pin for forming a workpiece in cooperation with the die. Each die is releasably assembled on the die side with a cap that prevents the workpiece from coming up at the time of pin removal by approaching the die, and lifts the punch unit to the pin replacement position where the punch pin and cap can be removed. Is provided.

Here, as a method of driving the punch pin, a method of driving the punch pin integrally with the punch head can be adopted, but in order to make a large number of holes in the work in a short time, the punch head is made into the work It is preferable to place them close to each other and drive a light punch pin and output shaft with a short stroke. A drilling device adopting this method uses a punch unit, an actuator that raises and lowers the punch head between a drilling position approaching the die and a standby position away from the die, and a hammer that strikes the punch pin against the die at the drilling position. A mechanism is provided, the output shaft of the hammer mechanism is inserted into the punch, and the punch pin is removably assembled on the lower end of the output shaft to the die side.

In addition, the collar can be press-fitted with height adjustment on the punch pin so that the punch pin of the spacer whose protrusion length against the punch head has been adjusted in advance can be prepared, and the collar pin from the collar pin end in advance It is preferable to preset the end-to-end dimension. Furthermore, although a screw can be used for assembling the cap, it is preferable that the cap be releasably assembled to the punch head via an elastic member, in that it can be removed with a touch. Brief description of drawings ·

Figure 1 is a side view of a punching machine equipped with the punching device of the present invention It is.

FIG. 2 is a plan view of the same punching machine.

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 showing one embodiment of a drilling device.

FIG. 4 is a cross-sectional view taken along line B _ B of FIG. 3 showing the hammer mechanism of the drilling device.

FIG. 5 is a cross-sectional view taken along line C-C in FIG. 4 showing the punch pin and cap assembly structure of the punching device.

FIG. 6 is a cross-sectional view showing a form of removal of the punch pin and the cap. FIG. 7 is a front view of a jig for adjusting the protrusion length of the punch pin. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described based on the drawings. The punching device of this embodiment is equipped in a punching machine for punching a flexible ceramic green sheet before lamination (before firing) as a work. In order to enable fine through-hole printing (conductive printing), this punching machine, for example, has a through diameter of 0.5 to 0.5 mm on a 150 mm x 150 mm workpiece. The hole is configured to be able to drill tens of thousands at a high speed of drilling 26 holes per second with a pitch accuracy of ± 0.01 mm.

As shown in FIGS. 1 and 2, a processing chamber 2 closed by a force par Q is formed at the top of the body 1 of the punching machine, and a base 3 is horizontally fixed at the bottom of the processing chamber 2. On the base 3, a work table 4 in which a holding frame H for holding a work W is placed, and a flat serpomotor 5 for feeding the holding frame H back and forth and left and right on the work table 4; A drilling device 6 is provided between the surface servomotor 5 and the work table 4 for making a through hole in the work W. The planar servomotor 5 is composed of a fixed portion 5 a in which a large number of permanent magnets are arranged on the upper surface, and a movable portion 5 b in which a plurality of electromagnets are arranged on the lower surface.

The punching device 6 is provided with a pan-tunit 7 at the upper side of the work placement space where the work W is to be positioned, and is provided with a die nit 8 at the lower side of the work placement space of the work W. The punch unit 7 is installed on a frame 9 extending above and below the base 3. The die unit 8 has a die base 10 installed on a base 3, a die holder 1 1 installed on the die base 10, three dies 12 held on the die holder 1 1, and a chip (punch scrap) suctioned on the die 1 2 Hose 13 is connected.

As shown in FIG. 3, at a position opposite to the die holder 1 1,. The punch base 21 is fixed to the frame 9 of the punch 7 and the punch base 22 is vertically supported by the punch base 21. Three air cylinders 24 are juxtaposed on the upper side of the frame 9 through the brackets 23 and the screw holes 24 a are punched through the clamps 25 and the connecting plates 26. 2 is linked to 2 The air cylinder 24 is an actuator that raises and lowers the punch head 22. When the screw rod 24a is extended, the punch head 22 is lowered to a drilling position approaching the die 12 When the piston rod 2 4 a is contracted, the punch head 2 2 is raised to a standby position away from the die 1 2.

As shown in FIG. 4, the punch head 22 is provided with the punch pins 2 8 for forming the punch W in cooperation with the die 1 2, and the connecting plate 2 6 is provided with the punch pins 2 8 1 A hammer mechanism 2 9 is provided for striking 2. The hammer mechanism 2 9 is provided with an inverted V-shaped hammer base 3 0 and its head 3 0 a is fixed to the connecting plate 2 6 with a plurality of bolts 3 1 A pair of legs 30 c are connected to the head 3 0 a via a thin-walled neck 3 0 b so as to be elastically displaceable. A pair of piezoelectric elements 32 is attached to the head 30a, and the lower end thereof is connected to the leg 30c via a connecting portion 30d.

A hammer 34 is supported at the lower end of the leg 30 c by a plate 33, and a hollow output shaft 36 is connected to the hammer 34 via a rod 35. The output shaft 36 is vertically slidably inserted into the punch head 22 via the upper and lower sleeves 2 2 A, and the punch pin 28 is attached to the lower end of the output shaft 36 by the set screw 37. 1 Removably assembled on 2 side. Then, at the punching position of the punch head 22, the piezoelectric element 32 is expanded and contracted in the vertical direction by energizing to open and close the leg portion 30 c, swing the plate panel 33, and vertically move the hammer 34. It vibrates and punches the work W by punching the punch pin 2 8 onto the die 1 2 (which means inserting into the corresponding hole of the die 1 2).

As shown in Figs. 5 and 6, the lower end small diameter portion 2 2a of the punch head 2 2 is covered with a cap 3 9 which prevents the work W (sheet) from floating when the pin is pulled out. When the lid 2 2 is placed in the drilling position, the cap 3 9 approaches the die 1 2 and forms a slit G between the die 1 2 and the die 1 2 to prevent the workpiece W from rising. ing. The panel panel 40 is accommodated in the plurality of peripheral wall grooves 39a of the cap 39 respectively, and the lower end thereof is held by the cap 39 by the cylindrical retainer 41. The upper end of the panel panel 40 is to the punch A cap 2 9 is hooked on a notch 2 2 b of the groove 2 2, and a cap 3 9 is detachably assembled to the die 1 2 side of a punch head 2 2 through a plate pan 40 as an elastic member. A collar 43 is press-fit to the punch pin 28 so that the height can be adjusted, and the upper end of the collar 43 is brought into contact with the lower end of the output shaft 36 to punch the punch pin 28. Fixed protrusion against head 2 2 It can be assembled with a length (the length at which the lower end of the pin portion 28a is located slightly above the lower end of the cap 39 and fits in the low wall hole 39b). The collar 43 is welded to the spare punch pin 28 outside the machine using the jig 44 shown in FIG. The jig 4 4 has a holding portion 4 5 for holding the collar 4 3, a handle 4 6 for pressing the punch pin 2 8 into the collar 4 3, and a dial gauge 4 7 for measuring the protrusion length L of the punch pin 2 8 Is provided.

As shown in FIG. 3, the left and right two rams 15 are fixed in a hanging manner to the frame 9 of the punch unit 7, and a cylindrical guide 16 for vertically guiding the rams 15 on the base 3 is erected. It is set up. On the lower side of the base 3, an air cylinder 17 as a lift means for lifting the pan-tunit 7 is installed vertically via the bracket 14 and levers 18 are attached to the right and left sides of the shaft 1 It is supported so that it can swing up and down by 9. The inner end of the lever 18 is connected to the screw 17 of the air cylinder 17 via joint 20 and the outer end of the lever 18 is connected to the lower end notch 15a of the ram 15 It is done.

Then, in the normal operation of the punching device 6, the punch unit 7 is placed at a steady position approaching the diw 8 via the guide 16. In the stationary position of the cylinder unit 8, the upper end large diameter portion of the ram 15 is positioned in contact with the upper end of the guide 16, and the size of the slit G is set by this position. The size of the slit G can be changed by replacing a liner (not shown) interposed between the upper end of the ram 15 and the upper end of the guide 16. In this state, the air cylinder 24 corresponding to the punch head 22 fitted to the hole to be drilled is operated to lower the punch head 22 to a position close to the die 12 as shown in FIG. Do the drilling work in this condition. In addition, when replacing the punch pin 28, the piston rod 1 7 a of the air cylinder 17 is pulled down, and the lever 18 is moved. The frame 9 is raised via the ram 15 and the pantunit 7 is disposed at its lower side in the pin replacing position (dashed line position in FIG. 3) where the punch pin 28 and cap 39 can be attached and detached. The punch base 2 1 is provided with a pair of centering holes 48 on the left and right sides, and it is inserted into the centering holes of the die holder 11 through the centering pins at the time of assembly.

Therefore, according to the perforation device 6 of this embodiment, the following effects can be obtained.

(a) As the punch unit 7 is raised to the pin replacement position and the cap 3 9 and the punch pin 2 8 are removed, the defective punch pin 2 8 is replaced with the spare punch pin 2 8 without removing the punch head 2 2. It can be exchanged in a short time.

(b) Since the punch base 2 1 is not removed when replacing the punch pin 2 8, the punch pin 2 8 after replacement does not need to be concentric with the die 1 2 and re-centered, and the loss time can be shortened.

(c) Since the collar 4 3 is attached to the punch pin 2 8 so that the height can be adjusted, the protrusion length L of the punch pin 2 8 can be accurately adjusted in advance outside the machine. Loss time can be reduced by eliminating the need for height adjustment of 2 8.

(d) Using the elasticity of the panel 40, the cap 39 can be attached to and removed from the punch head 22 with one touch.

(e) The punch pin 2 8 is driven by the hammer mechanism 2 9 with the punch head 2 2 positioned at the drilling position approaching the die 1 2 so that the lifting stroke of the punch pin 2 8 is shortened and the work W You can make many holes in a short time.

(f) At this time, the cap 39 forms the slit G as close to the die 12 as possible within the transferable range of the workpiece W, and the workpiece W is removed when the punch pin 28 is pulled from the primary W (The punch pin 2 8 Can be used to prevent floating) and drill high precision through holes.

(g) In addition, since the piezoelectric element 32 is used as the drive source of the hammer mechanism 2 9, the punch pin 2 8 can be driven at high speed to improve the drilling efficiency and the punch pin according to the thickness of the work W 28 The lift stroke can be easily changed.

(h) The work holding frame is moved by the movable part of the flat servo motor, so the mass of the movable member for work movement can be reduced, high-speed positioning with high accuracy is possible, and drilling accuracy and drilling ability are improved. it can.

The present invention is not limited to the above embodiment. For example, as exemplified below, the shape and configuration of each part can be appropriately changed and implemented without departing from the spirit of the present invention. It is.

(1) Increase or decrease the number of punch heads 2 2 and dies 1 2 appropriately.

(2) Use a motor as the drive source for the hammer mechanism 29 and drive the punch pin 28 through the vibrator with the motor.

(3) Use a mechanism consisting of a motor and rack pinion as a lifting means for punch unit 7.

(4) Screw the collar 4 3 onto the punch pin 2 8 with adjustable height.

(5) The drilling device of the present invention should be applied to the drilling of various sheet-like works other than green sheets, such as films for flexible substrates and metal foils.

As described in detail above, according to one embodiment of the present invention, the punch pin and the cap can be removably attached to the die head on the punch head, and the punch unit can be lifted to the pin replacement position. By providing the means, the punch pin can be easily and quickly replaced without removing the punch head. According to another embodiment of the present invention, since the punch pin is driven by the hammer mechanism at the punching position of the punch head, the lifting and lowering stroke of the punch pin is shortened, and a large number of holes are formed in a short time in the work. There is an effect that can be opened.

According to another embodiment of the present invention, since the collar is press-fit into the punch pin in a freely adjustable height to preset the punch pin and the collar, it is not necessary to adjust the height of the punch pin in the machine. It has the effect of reducing loss time.

According to another embodiment of the present invention, since the cap is assembled to the punch head through the elastic member, the cap can be attached and detached with one touch.

Claims

The scope of the claims

1. Install the punch unit above the work placement space where the sheet-like work is to be placed, install the die under the work placement space, install the die in the die unit, and install the punch head in the punch unit. The punch head, a punch pin that cooperates with the die to punch the workpiece, and a cap that approaches the die at the time of drilling to prevent the workpiece from coming up at the time of pin removal, are removably assembled to the die side. What is claimed is: 1. A punching device provided with lifting means for raising the pin to a pin replacing position where the punch pin and cap can be attached and removed.

2. The punch unit is equipped with an actuator that raises and lowers the punch head between the drilling position approaching the die and the standby position away from the die, and a hammer mechanism that lowers the punch pin to the drilling position. The drilling apparatus according to claim 1, wherein the punch pin is inserted into the punch and the punch pin is detachably attached to the lower end of the output shaft to the die side.

3. The perforating apparatus according to claim 1 or 2, wherein a force roller is press-fit onto the punch pin so as to adjust its height.

4. The perforation according to claim 1, 2 or 3, wherein the cap for preventing workpiece lifting is releasably assembled to the punch head via the flexible member.