JPH11235698A - Manufacture of punch base - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a punch base in which an axial center aligning of a punch hole and a guide hole is easy. SOLUTION: A frame 4 having a guide hole 10 of a punch shaft and a base 5 having a punch hole 21 which is analogous to the guide hole 10 in external shape and is slightly smaller than the guide hole 10 are separately formed. The axial centers of these holes 10 and 21 are almost concentrically opposed and the base 5 and the frame 4 are fixed with a mounting bolt 3. Next, the punch hole 21 is worked into the same shape as the guide hole 10 by defining the guide hole 10 as a guide, the axial centers of these holes 10 and 21 are exactly aligned, either one or both of an opening surrounding surface 5a of the punch hole 21 and an opening surrounding surface 4a of the guide hole 10 are worked and a slit 31 for punch is formed between the base 5 and the frame 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a punch base for a punch.

[0002]

2. Description of the Related Art A punch base for punching an appropriate sheet such as paper has a base having punch holes and a frame having guide holes for punch members opposed to the punch holes. It is known that the axis of the punch hole is aligned with the axis of the guide hole and these are integrally assembled. A punch slit for inserting a sheet is formed between the base and the frame. I have. However, in the punch base for forming the base and the frame separately and assembling them integrally, the axis of the punch hole formed in the base does not exactly coincide with the axis of the guide hole formed in the frame. In addition, since a hole cannot be formed in the sheet by the punch member, it is very troublesome to assemble the base and the frame by matching the axis of the punch hole with the axis of the guide hole.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing a punch base in which the center of the punch hole and the guide hole can be easily aligned.

[0004]

In order to solve the above-mentioned problems, a method of manufacturing a punch base according to the present invention comprises a frame having a guide hole for a punch member and an outer shape similar to the guide hole and slightly smaller. A first step of individually forming a base having a punched hole; a second step of fixing the base and the frame with the axis of the punched hole and the axis of the guide hole substantially concentrically opposed to each other; A third step of processing the punch hole into the same shape as the guide hole by using the hole as a guide so as to match the axis of the guide hole with the axis of the punch hole; The method is characterized by comprising a fourth step of processing one or both surfaces of the opening peripheral surface to form a punch slit for inserting a sheet between the base and the frame.

In order to solve the same problem, a method of manufacturing a punch base according to the present invention provides a frame having guide holes and positioning means for a punch member, and an outer shape similar to the guide holes and slightly smaller. A first step of separately forming a base having punch holes and positioning means;
A second means for fixing the base and the frame by the fixing means, with the axis of the punch hole and the axis of the guide hole substantially concentrically opposed by the positioning means provided on the frame and the base.
A third step of processing the punch hole into the same shape as the guide hole by using the guide hole as a guide, and aligning the axis of the guide hole with the punch hole; and separating the base and the frame and facing each other. Forming a punch slit for inserting a sheet between the base and the frame by processing one or both surfaces of the opening peripheral surface of the punch hole and the opening peripheral surface of the guide hole to be formed. And the positioning means aligns the axes of the punch hole and the guide hole,
Fifth fixing the base and the frame again by the fixing means
It is characterized by comprising a process.

[0006]

According to a first aspect of the present invention, there is provided a method of manufacturing a punch base.
An individually formed frame having a guide hole for a punch member and a base having a punch hole are fixed such that the axis of the guide hole provided therein and the axis of the punch hole are substantially concentrically opposed. In this case, the axis of the guide hole and the axis of the punch hole need only be substantially concentric, and these axes do not need to be exactly coincident with each other. The operation of fixing the and is relatively simple.

Next, the guide hole formed in the frame is used as a guide, and the punch hole is machined into the same shape as the guide hole by a processing tool passing through the guide hole, so that the axis of the guide hole and the axis of the punch hole are accurately aligned. Let it. In this case, since the outer shape of the punch hole is similar to the guide hole and slightly smaller than the guide hole, the amount of processing is small, and the punch hole is processed using the guide hole as a guide. Can be accurately matched with each other. After the punch holes are processed, either one or both of the peripheral surfaces of the punch holes facing each other and the peripheral surfaces of the openings of the guide holes are processed to insert a sheet between the base and the frame. Is formed to form a punch base.

According to a second aspect of the present invention, in the method of manufacturing a punch base, positioning means provided on the frame and the base are used.
The axis of the guide hole and the axis of the punch hole are almost concentrically opposed to each other and fixed, and the guide hole is used as a guide to form the punch hole into the same shape as the guide hole. Match the hearts exactly. After the punch holes are processed, the frame and the base are separated, and one or both surfaces of the opening peripheral surfaces of the punch holes and the guide holes facing each other are processed to form the base and the frame. A punch slit for inserting a sheet between them is formed, an assembly position of the frame and the base is determined by a positioning means, and these are assembled again to form a punch base.

In this case, one or both of the peripheral surface of the opening of the punch and the peripheral surface of the opening of the guide hole can be machined in a state where the frame and the base are separated, so that the slit for the punch can be easily formed. is there. In addition, since the mutual assembling positions are determined by the positioning means provided on the frame and the base, even if the frame and the base once separated are reassembled, the axis of the guide hole and the axis of the punch hole may be misaligned. There is no.

[0010]

1A to 1C show an embodiment of the present invention. A punch base 2 of a punch 1 comprises a frame 4 and a base 5 which are integrally assembled by mounting bolts 3 constituting fixing means. The handle 7 is pivotally supported by a handle shaft 6 at one longitudinal end of the frame 4. The punch 1 has an embossing male mold 22 and a female mold 11 for embossing a sheet.
An embossing slit 30 is provided (see FIGS. 8 and 9).

The frame 4 shown in detail in FIGS. 2 to 4 has a punch member 8 formed near one end in the longitudinal direction.
(See FIGS. 8 and 9) Guide hole 10 for guiding movement
And a female pressing member 12 (FIG. 8 and FIG. 9) which is provided near the other end in the longitudinal direction and presses the female die 11 for embossing.
Female guide holes 13 through which a plurality of (two in the example shown) positioning holes 14 formed in the lower surface therebetween.
And a spring seat 15 formed on the upper surface between the positioning holes 14 and a handle bearing 16 formed in the width direction at the other end in the longitudinal direction, and are integrally formed of an appropriate metal or synthetic resin. The handle bearing 16 has an opening at the other end in the longitudinal direction of the frame 4, and has cutouts 16 a formed at the upper part of the center part in the width direction and at the lower part of the left and right parts, respectively. The lower opening peripheral surface 4a of the guide hole 10 is flat.

The guide hole 10 has an enlarged diameter portion 10a on the upper surface, and a concave groove for receiving a punch mounting shaft 18 (see FIGS. 8 and 9) in which the punch member 8 is mounted on the handle 7 in the width direction of the upper surface. 10b are formed. The female guide hole 13 has a shape in which the center of each of the four sides of the square is slightly expanded in an arc shape in plan view, and the female press member 12 is attached to the handle 7 in the width direction of the upper surface. Groove 13a for receiving mounting shaft 19 (see FIGS. 8 and 9)
Are formed.

The base 5 shown in detail in FIGS.
A punch hole 21 formed near one end in the longitudinal direction, a mold mounting recess 23 near the other end for mounting a male die 22 (see FIGS. 8 and 9) of an embossing tool, and an upper surface (frame) therebetween. Mounting surface 2 of the frame 4 formed on the (4th surface)
4, a positioning projection 25 formed on the mounting surface 24 to determine the mounting position on the frame 4 in cooperation with the positioning hole 14, and an insertion hole 26 for the mounting bolt 3, and base covers at both ends in the longitudinal direction to be described later. Locking projections 27, 27 for attaching the first and second support portions 28, 28 on both sides in the width direction of the lower surface.
And are integrally formed of an appropriate metal or synthetic resin. Also, the peripheral surface 5 of the upper opening of the punch hole 21
a and the mounting surface 24 are both flat.

The punch holes 21 formed in the base 5 are:
The outer shape is similar to the guide hole 10 of the frame 4 and slightly smaller. Further, in the illustrated example, the punch hole 21, the punch member 8, and the guide hole 10 form a star-shaped cross section, and thus the hole to be formed in the sheet has a star-shaped cross section.
These cross-sectional shapes are not limited to the star shape, but may be an appropriate shape such as a circle.

The frame 4 and the base 5 formed separately are provided with positioning projections 25 and 2 constituting positioning means.
5 and the positioning holes 14, 14 determine the mutual position,
The mounting surface 24 of the base 5 is brought into contact with the lower surface of the frame 4,
The mounting bolt 3 passing through the insertion hole 26 of the base 5 is
When they are screwed into the center hole 15a of the spring seat 15 and are integrally assembled, the axis of the guide hole 10 and the axis of the punch hole 21 are substantially concentrically opposed to each other, and are temporarily aligned. Peripheral surface 4a of lower opening of guide hole 10 and punch hole 2
The upper peripheral surface 5a of the upper opening 1 abuts. However,
The axis of the guide hole 10 and the axis of the punch hole 21 need only be assembled substantially concentrically, and the axes of these holes do not have to coincide exactly. In addition, the female guide hole 13 and the mold mounting recess 23 face each other due to the assembly of the frame 4 and the base 5 (see FIG. 1B). Since the punch 1 includes the male mold 22 and the female mold 11 for embossing, when the frame 4 and the base 5 are assembled, the embossed sheet is placed on the other end of the punch base 2 in the longitudinal direction. An embossing slit 30 for insertion is formed (see FIG. 1B).

In a state where the frame 4 and the base 5 are assembled, when a processing tool (not shown) having an outer shape substantially the same as that of the guide hole 10 is inserted into the punch hole 21 using the guide hole 10 as a guide, the outer shape of the punch hole 21 is changed. Since the shape is similar to the guide hole 10 and is slightly smaller, the punch hole 21 is slightly cut and machined into the same shape as the guide hole 10, whereby the axis of the guide hole 10 and the axis of the punch hole 21 exactly match. (See FIG. 1B). The alignment of the guide hole 10 and the punch hole 21 with the guide hole 10 as a guide
And the frame 5 are positioned and fixed with the mounting bolts 3, so that the axes of these holes can be correctly aligned. Further, the outer shape of the punch hole 21 is changed to the guide hole 1.
Since the punch hole 21 is formed in a slightly smaller size similar to the outer shape of the hole 0, the opening amount 4a of the guide hole 10 in the frame 4 and the opening surface 5a of the punch hole 21 in the base 5 are in contact with each other. Therefore, the processing of the punch holes 21 is simple.

Next, the lower opening peripheral surface 4 of the guide hole 10
a and one or both surfaces of the upper opening peripheral surface 5a of the punch hole 21 are cut by an appropriate machining tool, and as shown in FIG. 1C, a punch slit for inserting a sheet into the punch base 2 is formed. 31 are formed. The punch slit 31 can be formed in a state where the frame 4 and the base 5 are fixed with the mounting bolts 3 or can be formed in a state where they are separated. When the slit 31 is formed by separating the frame 4 and the base 5, the frame 4 and the base 5 are positioned by the positioning projections 25 and the positioning holes 14 after the slit 31 for the punch is formed, and the mounting bolt 3 is used again. These are assembled together.

If the frame 4 and the base 5 are once separated to form the punch slits 31, the slits can be easily formed, and after the punch slits 31 are formed, the positioning projections 25 and the positioning holes 14 constituting the positioning means are formed.
Thus, these mounting positions are determined and assembled, so that the axial center of the guide hole 10 and the axial center of the punched hole 21 that are accurately matched do not deviate by the re-assembly.

FIGS. 8 and 9 show an example of the punch 1 using the punch base 2. The handle 7 for pressing the punch member 8 has an inverted U-shaped cross section in the width direction. The punch member 8 having the same shape as the punch hole 21
The female pressing member 12 is attached to each of the female mounting shafts 19, and both ends of the punch mounting shaft 18 are formed with floating holes 33, 33 formed in both walls below the pressing portion 7 a provided at one end of the handle 7. (Only one is shown) so as to be freely movable. The handle 7 has a handle shaft 6 mounted on a handle bearing 16 formed on the frame 4, and a return spring (a coil spring in the illustrated example) 35 between the spring seat 15 of the frame 4 and a spring seat 34 provided on the handle 7. Is pivotally supported by the punch base 2 so as to be swingable, and is slightly movable in the longitudinal direction with respect to the handle bearing 16. Reference numerals 36 and 37 in FIGS.
The base cover 37 is attached to the base 5 by the locking projections 27, 27.

The punch 1 shown in FIGS. 8 and 9 has a female die 11 for embossing on the lower surface of a female pressing member 12 and a male die 22 for embossing in a die mounting recess 23 of the base 5. Both are interchangeably mounted by positioning projections provided on the mold and positioning holes provided in the female press member 12 and the mold mounting recess 23. Therefore, by exchanging these embossing dies, the shape and pattern of the emboss can be changed.

When the punch 1 inserts an appropriate sheet into the punch slit 31 and presses the handle 7, an appropriate shaped hole can be formed in this sheet by the punch member 8 and the punch hole 21. When a proper sheet is inserted into the embossing slit 30 and the handle 7 is pressed, a proper shape and pattern can be embossed on this sheet (see FIG. 9). In this case, since the handle shaft 6 inserted into the handle bearing 16 provided at the other end in the longitudinal direction of the frame 4 slightly moves in the opening direction, it is possible to prevent the hole or the emboss from being shifted due to the rotation of the handle 7.

[0022]

According to the present invention, a separately formed frame having a guide hole for a punch member and a base having a punch hole similar in shape to the above-mentioned guide hole and having a slightly smaller outer shape are formed by centering these holes. The punch holes are machined into the same shape as the guide holes, using the guide holes as guides, so that the axes of the guide holes of the separately formed frame and the axes of the punch holes of the base can be easily and accurately aligned Can be done.

Further, since the frame and the base are provided with positioning means for determining the relative positions, the frame and the base are separated after the axis of the guide hole and the axis of the punch hole are accurately matched. Since the slit for punch can be formed, the slit for punch is easy to form, and even if the frame and the base are reassembled, the axis of the aligned guide hole and the axis of the punch hole do not shift. .

[Brief description of the drawings]

FIGS. 1A to 1C are explanatory diagrams of a manufacturing method of the present invention.

FIG. 2 is a plan view of a frame.

FIG. 3 is a rear view of the same.

FIG. 4 is a sectional view of the same.

FIG. 5 is a plan view of a base.

FIG. 6 is a rear view of the same.

FIG. 7 is a sectional view of the same.

FIG. 8 is a vertical sectional view of a punch.

FIG. 9 is a longitudinal sectional view of the same operating state.

[Explanation of symbols]

 Reference Signs List 2 punch base 4 frame 4a guide hole opening surface 5 base 5a punch hole opening surface 8 punch member 10 guide hole 14 positioning hole 21 punch hole 25 positioning protrusion 31 punch slit

Claims (2)

[Claims] A first step of separately forming a frame having a guide hole for a punch member and a base having a punch hole having an outer shape similar to the guide hole and having a slightly smaller size;
A second step of fixing the base and the frame with the axis of the punch hole and the axis of the guide hole substantially concentrically opposed; processing the punch hole into the same shape as the guide hole using the guide hole as a guide; A third step of aligning the axis of the guide hole and the axis of the punch hole; and processing one or both surfaces of the opening peripheral surface of the punch hole facing each other and the opening peripheral surface of the guide hole, A fourth step of forming a punch slit for inserting a sheet between the base and the frame; and a method of manufacturing a punch base. 2. A first step of separately forming a frame having guide holes and positioning means of a punch member, and a base having punch holes and positioning means having an outer shape similar to the guide holes and being slightly smaller; A second step of fixing the base and the frame by the fixing means, with the axis of the punch hole and the axis of the guide hole substantially concentrically opposed by the positioning means provided on the frame and the base; A third step of processing the punch hole into the same shape as the guide hole as a guide so as to align the axis of the guide hole with the axis of the punch hole; and separating the base and the frame and surrounding the opening of the punch hole facing each other. And a fourth step of processing one or both surfaces of the opening peripheral surface of the guide hole to form a punch slit for inserting a sheet between the base and the frame; The serial positioning means, by matching the axis of the punch holes and the guide hole, the fifth step of fixing the base and the frame again by the fixing means; become more punch base manufacturing method.