JPH106296A - Small hole punching method and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the operating efficiency to a great extent through omission of the punch return process and provide possibility of making fine holes which have been impossible or difficult according to the conventional technique. SOLUTION: A die hole 11 penetrating a die 10 and a guide hole 16 penetrating a guide holding member 15 have the same section shape, and therewith a workpiece W is pinched or approached from two sides. A punch piece 30 consisting of a short rod having a section shape to fit in the holes 11 and 16 is supplied from the side with the guide holding member 15 and is left in high speed collision with a pressed into the workpiece W, and the workpiece W is punched off. The produced chip and punch piece 30 are passed in one direction through the die hole 11 in the die 10. Then the workpiece W is sent out from the die 10 and guide holding member 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device such as a press for punching a small hole in a material to be processed, and more particularly to a fine device for processing an IC chip, a printed board, an ink ejector head of a computer printer, and the like. And a device therefor.

[0002]

2. Description of the Related Art In a conventional punching apparatus for a general press, a punch die A punches out a material from a die 10 and then reverses the direction of the punch die to remove the material from the die. (See FIG. 10). However, when the work material is thin or the hole diameter is small, the punch die A
When removing a workpiece, the periphery of the hole of the workpiece W is temporarily turned up due to friction between the workpiece and the workpiece W, so that accurate drilling is difficult. In the conventional pressing method, in the case of an extremely thin workpiece W, the thickness of the workpiece W is at most 80 mm.
%, And perforations below this are considered difficult. However, in recent years, there has been a tendency to increase the demand for forming fine holes in electronic device parts and the like.

[0003] In addition, a method and an apparatus for perforating with ultra-high pressure water are known from Japanese Patent Application Laid-Open No. Hei 7-132399. The ultra-high pressure water type has also been subjected to a drilling experiment at the present applicant's company, but it is not possible to form a precisely shaped hole in a fine drilling, and a flexible or flexible material has an accurate drilling. It is difficult, and work efficiency cannot be improved much.

[0004]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to eliminate the above-mentioned turning, eliminate the step of returning the punch, and remarkably improve the working efficiency. It is another object of the present invention to provide a method and an apparatus for performing fine perforations which have been impossible or extremely difficult in the past. Another object of the present invention is to enable accurate processing of a flexible workpiece.

[0005]

In order to achieve the above-mentioned object, the present invention uses a die and a guide pressing member provided with a die hole and a guide hole having the same cross-sectional shape, respectively. A first step of aligning the positions and holding the workpiece by the die and the guide pressing member; A punch piece of a short rod having a cross-sectional shape just sliding on the die hole and the guide hole is supplied from the guide pressing member side,
A second step of colliding or punching the punched piece into the workpiece at a high speed or at a high speed to punch out the workpiece and pass the punched chip and the punched piece through the hole of the die in one direction. Thereafter, a third step of feeding the workpiece from the die and the guide pressing member. A small hole punching method is characterized by comprising the above three steps.

In order to achieve the above object, a large number of punch pieces are prepared by the small hole punching method, and a position where the workpiece is to be punched is supplied to the position of the hole of the die and the guide pressing member. Every time, the punch pieces are supplied one by one to one guide hole.

In order to achieve the above object, it is preferable that the high speed collision speed or the hitting speed of the punch piece in the small hole punching method is 10 cm / sec to 20 m / sec.

In order to achieve the above object, the die hole and the guide hole in the small hole punching method are formed by drilling a plurality of holes corresponding to a set of a die and a guide pressing member.
In some cases, one punch piece is simultaneously supplied to any of the sections.

In order to achieve the above object, the chip and the punched piece after the punching step of the small hole punching method are separated, and only the punched piece is circulated and supplied again to the hole of the guide holding member. In some cases.

In order to achieve the above object, the punch piece of the small-hole punching method may be selected from a carbide steel wire, a tungsten wire, a piano wire and other wires having the same strength and hardness as these. It is preferable to use one type. Further, in order to achieve the above-mentioned object, as a material to be processed by the small hole punching method, a printed circuit board of an IC chip, a synthetic resin film such as a photographic film, a laminated film of a metal and a synthetic resin, a metal thin plate, a foil and a paper. It may be characterized by supplying one of them.

In order to achieve the above object, the present invention is directed to a die and a guide pressing member, a driving means for moving the die and the guide, a large number of punch pieces, a fluid pressure hammer for hitting the punch pieces, a pure mechanical hammer. Hammer, a punch piece supply device that supplies the large number of punch pieces to the hammer or the guide hole, and a work material supply and unloading device that supplies and unloads a work material between the die and the guide pressing member. The die has a die hole penetrating therethrough, and a guide pressing member is provided so as to be able to approach and separate from the die, and the guide pressing member has a guide penetrating on the same axis as the die hole. At least one hole is perforated, and the punch piece has a cross-sectional shape corresponding to the die hole and the guide hole, respectively, and has a short rod shape, At least one hammer is provided on the side of the id pressing member, and at least one punch piece is hit at a time toward the guide hole, and a punched chip and a punch piece are collected below the die. A small hole punching device characterized by being provided with a collecting device.

In order to achieve the above object, a plurality of die holes and punch holes are provided in the die and the guide pressing member of the small hole punching apparatus. These dies are provided with a hammer for hitting a punch piece. It may be characterized in that it is relatively movably mounted at another hole position.

In order to achieve the above object, the contact surface between the die and the guide pressing member of the small hole punching device is one of a flat surface, a quadratic surface and a cubic surface, and the die and the guide pressing member are provided. 9. The holes provided in each of the holes are drilled at right angles to the two mold mating surfaces in that portion, and the axis of each hammer is parallel to the axis of the guide hole. Small hole punching device.

In order to achieve the above object, a solid separation device for separating the chips and the punch pieces is provided downstream of the recovery device of the small hole punching device. preferable.

According to another aspect of the present invention, there is provided a small-hole punching apparatus according to the present invention.
Preferably, the hammer is an air hammer.

According to another aspect of the present invention, there is provided a small hole punching apparatus for achieving the above object.
The air hammer may be replaced with an air gun for firing the punch pieces, and the air gun may be provided with a punch piece supply device in a barrel portion.

Operation of the Invention The operation of the invention according to claims 8 to 12 will be described. This is shown in FIGS. 1 to 3. First, the workpiece is separated from the mating surface of the guide holding member provided on the punch die as far as the workpiece can be carried in, and is supplied between them by a workpiece feeding / unloading device. The material is pressed against the die, and the workpiece is held between the die and the guide pressing member.

Next, at least one punch piece supplied to the guide hole of the guide holding member is hit with a hammer at a time, and the hit punch piece passes through the hole of the guide holding member and is held between the die and the guide holding member. The workpiece to be processed is hit or hit at a high speed, and is punched into a cross section of a die and a punch piece.

The punched chips and the punch pieces pass through the die holes and fall into these collecting devices. At this time, since the periphery of the hole of the workpiece is also sandwiched between the die and the guide pressing member, the periphery of the hole does not turn up or bend in any direction. This tendency becomes more remarkable as the speed of the punch pieces increases. When the target hole is drilled in the work material, the guide holding member is separated from the work material and the die as in a known press machine, and the work material is unloaded by the work material supply and unloading device. The workpiece is supplied by the workpiece supply / unloader. If the workpiece is a continuous strip, it moves sequentially according to the processing pitch.

By the operation of the above apparatus, the punch piece is hit or pushed with a hammer, and the method according to claim 1 or 2 is performed. The method according to the third aspect of the present invention is the case where the punch piece is hit with a hammer, and the speed at which the punch piece hits the workpiece at a high speed or 10 cm / sec to 20 m / sec.

According to the ninth aspect of the present invention, a large number of holes are formed in a pair of the die and the guide pressing member.
The number of hits with a hammer at a time is a fraction of the number of die holes and guide holes, and for a set of dies and a guide holding member, the hammer sequentially turns the holes of the guide holding member, After relatively moving, the punch pieces are sequentially hit. After the punch pieces are hit with a hammer in all the guide holes to be processed, the next material is supplied in the same manner as described above. When the hammer hitting area is large and a single hammer can simultaneously strike a plurality of punch pieces, or when a plurality of hammer is provided, the punch pieces are hit in parallel at the same time. In this case, the method of the present invention will be described.

According to the tenth aspect of the present invention, the mating surface between the guide pressing member and the die is not limited to a flat surface, but may be a quadratic surface or a cubic surface. Each of the holes provided in the die and the guide pressing member is formed at right angles to both the mold mating surfaces of the dies, and the moving direction of each hammer is defined by the holes through which the punch pieces hit by the hammer pass. Since it is parallel to the axis, the punched piece always hits the workpiece at right angles, and is punched into the correct shape by the hole of the die and the punched piece.

According to the eleventh aspect of the present invention, since a solid separation device for separating the chip and the punch piece is provided downstream of the recovery device, the punched chip and the punch piece are separated. The separated punch pieces can be circulated again to the hammer punch piece supply section.
By operating this device, the method invention according to claim 5 is implemented.

In the twelfth aspect of the present invention, since the hammer is an air hammer, which is a kind of fluid pressure hammer, the axial direction is set to a desired direction, and the movement of the air hammer is facilitated, so that the degree of freedom of design is improved. Is high. In addition, the tapping speed can be easily increased, the speed can be easily selected, and the processing accuracy can be improved.

According to the thirteenth aspect of the present invention, an air gun is used in place of the air hammer, and a punch piece supply device is provided in the barrel portion. At least one method of the present invention has the same function as that of at least one of the inventions of the sixth to ninth aspects.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The workpiece W to be supplied is generally a thin metal plate, an IC chip, a printed board, or the like.
It may be a synthetic resin plate, a synthetic resin film, wood, plywood, foil, or paper. The thickness of the workpiece N is generally 1 mm or less and is suitable for 0.020 mm, but the thickness dimension has no meaning.

Embodiment 1 FIGS. 1 and 2 show an embodiment including the inventions according to claims 7 and 12. In the figure, reference numeral 10 denotes a die, in which a die hole 11 having a circular cross section penetrates up and down, and a lower portion of the die hole 11 is a large-diameter relief portion 12 having a large diameter.

Reference numeral 15 denotes a guide holding member, which is provided on a machine frame (not shown) so as to be able to contact and separate from the die 10.
A guide hole 16 having a circular cross section penetrates and is completely coaxial with a position corresponding to. The upper portion of the guide hole 16 is formed in a tapered shape 17 whose diameter increases as the upper end.
The guide holding member 15 is usually a hydraulic device (not shown).
, So that the die 10 can be moved up and down. The cross-sectional shape of the die hole 11 and the guide hole 16 is as follows.
Although the explanation has been given by exemplifying a circle, an oval shape, a rectangle, a triangle,
The shape is not limited, such as a trapezoid or a cloud.

Reference numeral 20 denotes a workpiece supply / unloading device provided in the vicinity of the die 10 in the same manner as a normal press machine. The illustrated one is a pair of upper and lower sandwiching rollers, but this type is not limited. 25 is an air hammer which is a kind of the fluid pressure hammer, and its striking piece 26 is shown in FIG.
This is an area where one punch piece 30 can be hit, and the one shown in FIG. 1 can hit two or more punch pieces 30. For example, there may be a hitting piece 26 large enough to hit one row of the guide holes 16 shown in FIG. In some cases, the hitting surface of the hitting piece 26 is provided with a deeper recess 27 in which the rear end of the punching piece 30 can be fitted exactly (see FIG. 3).

As the punch piece 30, a carbide steel wire, a tungsten wire, a piano wire, or the like is used, and the diameter thereof is not particularly limited, but a diameter of 1 mm to 0.02 mm is used. The length is set to 10 to 15 mm. The cross-sectional shape corresponds to the die hole 11 of the die 10 and is a shape that slides with the die hole 11 and is not particularly limited, such as a circle, an ellipse, and a rectangle, but the one used in this embodiment is a perfect circle. The upper and lower end surfaces of the punch piece 30 are finished in a plane that is exactly perpendicular to the axis. The material of the punch piece 30 is not limited to the above-described materials, but may be another material as long as it has the same strength and hardness. The clearance between the die hole 11 of the die 10 and the punch piece 30 is
Is preferably 3 to 5% of the diameter.

Reference numeral 35 denotes a collecting device for receiving the punched pieces 30 and the punched chips T, which are also provided on the lower side of the die 10. Reference numeral 36 denotes a solid separation device for separating the punched pieces 30 from the punched chips (see FIG. 5). As a type of the solid-solid separation device 36, a sieve type is shown in FIG. 5, but any type such as a cyclone collector type utilizing a weight difference, a wind pressure separation type, and a magnetic separation type may be used.

The separated punch pieces 30 are transported by a suitable transport means to a punch piece supply device 37 for supplying the punch pieces 30 to the guide holes 16, and the punch pieces 30 are circulated.

The solid separator 36 and the punch feeder 3
7, between the normal punch 30 and the worn punch 3
A sorting device 38 for sorting the punched pieces 3
Only 0 may be supplied to the punch supply device 37. The sorting device 38 discharges the defective punch pieces 30 out of the circulation system.

The aforementioned die 10 and guide holding member 15
For convenience of explanation, except for FIG. 7, the upper surface and the lower surface are provided vertically. However, the mating surface of the die 10 and the guide pressing member 15 is inclined in the vertical direction or as in the case of both sides in FIG. Is also included in the embodiment of the present invention.

Operation of Embodiment 1 First, the die 10 is fixed to the machine frame of the apparatus, and the guide holding member 15 corresponding to the die 10 is provided on the workpiece support surface so that the die hole 11 and the guide hole 16 are linear. So that each time the guide pressing member 15 separates from the die 10, a plate-shaped workpiece W is supplied between the die 10 and the guide pressing member 15 by the workpiece supply / unloading device 20,
The guide holding member 15 is lowered, and the workpiece W is held between the die 10 and the guide holding member 15.

The punch piece 30 is supplied to the guide hole 16 from the punch piece supply device 37. Next, the air hammer 25 is made to approach the guide holding member 15, and the dent 27 of the striking piece 26 is fitted to the rear end of the punch piece 30, and then the striking piece 26 is advanced at high speed by air pressure. In this case, buckling of the punch piece 30 does not occur. Alternatively, when there is no dent 27 on the striking surface of the striking piece 26, the striking piece 26 is advanced at high speed by air pressure as it is, thereby hitting the punch piece 30. The punched piece 30 advances through the guide hole 16 at a high speed,
The workpiece W is punched, the punched chip T and the punched piece 30 fall out of the hitting piece 26, pass through the die hole 11, pass through the die 10, and fall into the collection device 35.

The punch pieces 30 and the chips T that have fallen into the collecting device 35 are separated into only the punch pieces 30 by the solid separating device 36, and are supplied to the punch piece supply device 37 by the transport means, and the punch pieces 30 are sequentially circulated. The worn punch pieces 30 are removed from the circulation system by the sorting device. Of the removed punch pieces 30, those that can be used by repolishing are reused.

In the above operation, when a set of the die 10 and the guide holding member 15 has a large number of die holes 11 and guide holes 16, the above operations are performed simultaneously on these holes, and all the guide holes 15 A target hole is formed in the workpiece W. When the drilling operation is completed, the guide holding member 15 is raised, the workpiece W is carried out, the next workpiece W is supplied in the same manner as in the previous time, and the same drilling operation as in the previous time is performed.

Embodiment 2 This is an embodiment including the invention described in claim 8, and is shown in FIG. The difference from the first embodiment is that a large number of the die holes 11 and a large number of the guide holes 16 are formed in the set of the dies 10 and the guide holding members 15, respectively. Is an area where a part of the punch piece 30 supplied to the guide hole 16 is hit.

Therefore, after one hit of the air hammer 25, the guide holding member 15 is moved to another position of the guide hole 16 to perform a new tap. All guide holes 16
When the punching operation is completed by hitting the punch piece 30 supplied to the workpiece with an air hammer 25, the guide holding member 15 is separated from the die 10, the workpiece W is carried out, and a new material is supplied. I do.

Embodiment 3 This embodiment is shown in FIG. 7 and is an embodiment of the present invention described in claim 9. The work Wa having a two-dimensional curved surface or a three-dimensional curved surface is mainly used. The mating surface 18 of the die 10a with the guide holding member 15 is a two-dimensional curved surface or a three-dimensional curved surface, and the die hole 11 is provided with the guide holding member 15a of each die 10.
Is divided into a plurality of sections, and the die hole 11 is bored at right angles to the mating surface at that position.

On the other hand, the guide holding member 15a is divided into a plurality of sections, and each of the divided guide holding members 15a is provided with a significantly smaller number of guide holes 16 than the number of the die holes 11 of the die 10. Each guide holding member 1
5a simultaneously and individually contact and separate from the die 10. This embodiment is suitable for drilling a workpiece W1 having a two-dimensional or three-dimensional surface that has already been pressed.

Fourth Embodiment In the first to third embodiments, the circulating device for the punch 30 is omitted at all, and the punch 30 is used only once and is disposable (not shown). ). The device itself is very simple. Although the cost due to the consumption of the punch pieces 30 increases, devices such as a sorting device and a transfer device for circulating the use of the punch pieces 30 become unnecessary, and ordinary costs such as maintenance and management costs are also unnecessary. The adoption of the disposable method does not necessarily increase the drilling cost. In the above-described first to fourth embodiments, the air hammer 25 has been described as an example of the hammer 25. However, other hydraulic or hydraulic hammers utilizing fluid pressure may be used. The embodiment of the hammer of the present invention includes a purely mechanical hammer that moves the striking piece up and down by a crank type or the like, or a hammer using an electromagnetic force such as a solenoid. 4 m / sec to 20 m / sec for a fluid type hammer, especially an air hammer
Suitable for high-speed hitting, 10c for pure mechanical hammer
It is suitable for m / sec to 6 m / sec sub-high speed impact.

The speed of the above-mentioned hammer is 10 cm / sec to 4 m / sec when the workpiece W is hard and brittle.
When the workpiece W is flexible, or when different materials are laminated, the material W is punched out at a high speed of 4 m / sec to 20 m / sec. In this case, the material is not turned up, and the chip residue left behind by punching does not remain. In addition, even in the case of a flexible laminated board such as an IC chip, it has an effect that accurate perforation can be performed without peeling off from the laminated portion. In addition, it is possible to form a hole having an accurate shape without making the clearance between the die hole 11 and the punch piece 30 of the die 10 so small.

Embodiments 5 to 8 The air hammers of Embodiments 1 to 4 are replaced with air guns, respectively, and are described in Embodiments 5, 6, 7 and 8, respectively. That is, the difference from the other embodiments is not the air hammer but the punch piece 30.
Is an air gun that can fire. Therefore, the punch supply device is attached to the air gun. In this case, the axis of the barrel of the air gun and the axis of the guide hole 16 are accurately aligned. The other structure is the same as that of the first to third embodiments, and is an embodiment of the present invention.

Operation of Embodiments 5 to 8 In these embodiments, the rear end of the punch 30 is directly pressed by a high air pressure, and is pressed in the barrel. There is no risk of the ends being crushed or the punch 30 buckling midway. Other operations are the same as those of the first to third embodiments. Since the air gun can be generally connected to a high-pressure air source by a hose, the degree of freedom in designing the position of the air gun and the firing direction is high.

The guide hole 16 of the guide holding member 15 used in each of the first to eighth embodiments is the same as the guide holding member 1.
5 is a V block 15b, which is two members, and a holding block 15 for closing the opening of the V groove 18 of the V block 15b.
The guide hole (see FIG. 9) having a triangular cross section between the V groove 18 and the holding block 15b is also included in the concept of the guide hole in this specification. . In this case, the two members can be contacted and fixed by a fine adjustment device (not shown), and can be changed and adjusted according to the thickness of the punch piece 30.

[0048]

According to the method of the first aspect of the present invention, since the structure is as described above, first, the workpiece is sandwiched between the die and the guide pressing member, and then the punch piece is moved from the guide hole to the high position. Since the workpiece is punched by colliding with the workpiece at a high speed, no dripping or burrs are formed on the cut edge, and the processing accuracy is high. Since the punch piece passes in one direction, it does not need to be pulled out, so that this step is not required, and there is no fear that the work piece is turned up by the drawing and the punch piece is lost due to friction with the work piece. Further, since the punch pieces fall to the lower side of the die, they can be easily collected by the collecting device.

According to the method of the second aspect, in addition to the effects of the first aspect, a large number of punch pieces are prepared.
Since the same one is used successively and the same one is not used continuously, the annealing effect due to frictional heat does not occur, and the durability of one punch piece is improved even when the punch pieces are used cyclically. .

According to a third aspect of the present invention, in addition to the effects of the first or second aspect, the high speed collision speed of the punch pieces is 10 cm / sec to 20 m / sec.
As a result, reliable punching can be performed, and the punched edge is accurately punched into a die hole and a punch piece cross-sectional shape.

According to the fourth aspect of the present invention, in addition to the effects of the first, second, or third aspect of the present invention, since the above-mentioned method is employed, the guide hole of the guide holding member is temporarily formed. With the supplied several punch pieces, the workpiece is simultaneously punched, and efficient drilling can be performed.

According to the fifth aspect of the present invention, in addition to the effects of the first, second, third and fourth aspects of the present invention, the punch method is used repeatedly because of the above-mentioned method. Since the punch pieces are circulated sequentially, the punch pieces are sufficiently cooled during this time, and there is no annealing effect due to frictional heat, so that their service life becomes longer. In the middle of this circuit,
It is also possible to sort out defective defective products.

In the method according to the sixth aspect, the above-mentioned method is used as the material of the punch piece.
It has sufficient strength and hardness for the work material to be processed normally and can be used repeatedly. The worn part can be reused by polishing. In the method invention according to claim 7, even if the work material is extremely thin and flexible as described above, it is possible to accurately and efficiently drill small holes having a desired shape. Play.

In the device invention according to the eighth aspect, the above-described structure is formed and the operation is performed. Therefore, the first, second, third, fourth, fifth, and sixth aspects are provided. Alternatively, the method invention according to claim 7 can be carried out, and similarly to this method invention, fine holes can be accurately drilled in the workpiece. Further, since there is no return step for each punch piece, it is not necessary to take a return time, and efficient work can be performed.

According to a ninth aspect of the present invention, the above-described configuration and operation are achieved. In addition to the effects of the eighth aspect, the die and the guide holding member have a plurality of die holes and punches. Holes are provided, and these dies are equipped so that they can be moved to the other guide hole positions relative to the hammer that strikes the punch piece, so it is not necessary to increase the size of the hammer or to provide a large number of them. The whole device is downsized,
Position adjustment is also easy.

According to a tenth aspect of the present invention, the above-described configuration and operation are achieved. In addition to the effects of the eighth and ninth aspects, the contact surface between the die and the guide pressing member has the following features. A plane, a quadratic surface, or a cubic surface.Each hole provided in the die and the guide pressing member is perforated at a right angle to both mold mating surfaces of the die and the axis of each hammer. Since the is parallel to the axis of the guide hole, the material to be processed is not limited to a flat surface, and a material having a curved surface can be accurately drilled.

According to an eleventh aspect of the present invention, the above-described configuration and operation are achieved. Therefore, in addition to the effects of the eighth, ninth, or tenth aspect, a downstream side of the recovery device is provided. Has a solid separation device for separating the chip and the punch piece, so that even if the punch piece and the punched chip T are put into the collecting device together,
Only the punch pieces can be circulated and supplied to the punch piece supply device, and the chips themselves can be collected separately.

According to the twelfth aspect of the invention, an air hammer is used as one kind of the above-mentioned hammer, so that the apparatus itself is particularly lightweight and its axial direction can be freely selected. Is easy to move, the apparatus is simplified, and the degree of design freedom is high. Further, since it is an air hammer, the selection of the pressing force and the speed by the hitting piece can be freely selected according to the purpose, and the operation interval can be easily controlled.

According to a thirteenth aspect of the present invention, the apparatus has the above-described structure and functions. Therefore, it has substantially the same effect as that of the twelfth aspect of the invention. Therefore, the air pressure acts directly on the rear end of the punch and is not hit with a solid, so that the portion is hardly worn and there is no buckling of the punch. Further, since the air gun is lightweight and can be connected to a high-pressure air source with a hose or the like, it can be easily moved, and its inclination posture and firing direction can be freely selected.

[Brief description of the drawings]

FIG. 1 is a mechanical block diagram of a first embodiment of the device invention;

FIG. 2 is an enlarged longitudinal cross-sectional view at the time of punching with a punch piece set in a guide hole.

FIG. 3 is an enlarged longitudinal cross-sectional view of another embodiment when punching with a punch piece set in a guide hole.

FIG. 4 is a perspective view showing an example of a guide pressing member and a die.

FIG. 5 is a perspective view showing an example of a solid separation device.

FIG. 6 is a side view showing a moving state of an air hammer or an air gun.

FIG. 7 is a cross-sectional view showing a processing state when a workpiece is a curved surface.

FIG. 8 is a side view of an embodiment in which a guide pressing member and an air hammer or an air gun move with respect to a die.

FIG. 9 is a perspective view showing another embodiment of the guide pressing member.

FIG. 10 is a vertical sectional side view of a conventional press.

[Explanation of symbols]

 Reference Signs List 10 die 11 die hole 15 guide holding member 16 guide hole 25 hammer 30 punch piece

Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location H05K 3/00 H05K 3/00 KM

Claims (13)

[Claims] 1. A die and a guide presser member having a die hole and a guide hole having the same cross-sectional shape penetrate therethrough. The positions of these holes are matched, and the die and the guide presser are processed by the die and the guide presser. The first step of clamping the material.
A short bar punch piece having a cross-sectional shape just slid into the die hole and the guide hole is supplied from the guide holding member side, and the punch piece is subjected to high-speed collision or high-speed pressing into the workpiece, and punches the workpiece. And a second step of allowing the punched chips and punch pieces to pass through the holes of the die in one direction. Thereafter, a third step of feeding the workpiece from the die and the guide pressing member. A small hole punching method and apparatus comprising the above three steps. 2. A plurality of punch pieces are prepared, and each time a position where the workpiece is to be pierced is supplied to the position of the hole of the die and the guide pressing member, the punch piece is moved to one guide hole. 2. The method according to claim 1, wherein the holes are supplied one by one. 3. The high-speed collision speed of the punch piece is 10 cm /
The small hole punching method according to claim 1 or 2, wherein the speed is set to 20 m / sec to 20 m / sec. 4. The die hole and the guide hole are formed by drilling a plurality of holes corresponding to a set of a die and a guide pressing member.
4. The small hole punching method according to claim 1, wherein one of the punch pieces is simultaneously supplied to any one of the plurality of holes. 5. The punch and the chip after the punching step are separated from each other, and only the punch is circulated and supplied again to the guide hole portion of the guide pressing member. 5. A method for punching small holes according to claim 4. 6. The punch as set forth in claim 1, wherein one of a cemented steel wire, a tungsten wire, a piano wire, and other wires having the same strength and hardness as these are used. The small hole punching method according to any one of claims 2, 3, 4, and 5. 7. The method according to claim 1, wherein one of a printed circuit board of an IC chip, a synthetic resin film such as a photographic film, a laminated film of a metal and a synthetic resin, a thin metal plate, a foil, and a paper is supplied as a material to be processed. The method of punching a small hole according to claim 1, 2, 3, 4, 5, or 6. 8. A die and a guide pressing member, driving means for moving the die and the guide, a large number of punch pieces, a fluid pressure hammer for hitting the punch pieces, a kind of pure mechanical hammer, a large number of punch pieces. A punch piece supply device that supplies the workpiece to the hammer or the guide hole, and a workpiece supply / unloading device that supplies and unloads a workpiece between the die and the guide holding member, and the die hole passes through the die. At least one perforation is provided, the guide pressing member is provided so as to be able to contact and separate from the die, and the guide pressing member has at least one guide hole penetrating on the same axis as the die hole, The punch piece has a cross-sectional shape corresponding to the die hole and the guide hole, and has a short rod shape. At least one marker is provided, and at least one punch piece is hit at a time toward the guide hole,
A small-hole punching device, wherein a collecting device for collecting punched chips and punch pieces is provided below the die. 9. The die and the guide holding member are provided with a plurality of die holes and punch holes, and these dies are provided so as to be movable to other hole positions relative to a hammer for hitting a punch piece. The small hole punching device according to claim 8, wherein the hole is punched. 10. The contact surface between the die and the guide pressing member is one of a flat surface, a quadratic curved surface, and a cubic curved surface. Each of the holes provided in the die and the guide pressing member is a metal plate in the portion. The small hole punching device according to claim 8 or 9, wherein a hole is formed at a right angle to the mold mating surface, and the axis of each hammer is parallel to the axis of the guide hole. 11. The small hole according to claim 8, wherein a solid separation device for separating the chip and the punch piece is provided downstream of the recovery device. Punching equipment. 12. The small hole punching device according to claim 8, wherein said hammer is an air hammer which is a kind of fluid pressure hammer. 13. The invention according to claim 12, wherein the air hammer is replaced with an air gun for firing the punch pieces, and the air gun is provided with a punch piece supply device in a barrel portion thereof. Small hole punching device.