JPS5927666B2 - press mold - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a sub-guide post, a spring, a fastening bolt,
The present invention also relates to a press mold in which knock pins and the like are arranged.

1 Conventionally, the placement of sub-guide posts, springs, fastening bolts, dowel pins, etc. in press molds was determined based on the experience of the mold designer, which required a considerable amount of man-hours and did not necessarily ensure a good balance. However, it could not be said that the mold had perfect fastening force and uniformity.

In addition, when aiming at computer-aided design of molds, these placement determination problems become a problem. The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to provide a well-balanced, sufficient fastening force and uniformity, and to be relatively easy to design using computer aids. We provide press molds that have been manufactured. That is, in order to achieve the above object, the present invention provides a press mold with the following relationship:
Place the sub-guide posts in at least four positions (Xl, y,) from the plate corners with respect to the plate, and place the springs at both ends on the straight line in the x-axis direction connecting the positions of the sub-guide posts. Using the position of the sub guide post as a reference, arrange the fastening bolts and dowel pins one after another at intervals of pitch P1 from both ends within a range that does not interfere with each other. This press mold is characterized in that it is arranged at intervals of pitch P2 on a straight line parallel to .

The present invention will be specifically described below based on embodiments shown in the drawings.

FIG. 1 is a cross-sectional view of the overall configuration of an embodiment of the press mold according to the present invention, FIG. 2 is a plan view showing the die side of the press mold shown in FIG. 1, and FIG. 3 is the same as that of FIG. Side view, Figure 4 is the 2nd
Fig. 5 is a sectional view taken in the - arrow direction of Fig. 2, Fig. 6 is a plan view showing the punch side of the press mold shown in Fig. 1, and Fig. 7 is a side view shown in Fig. 6. 8 is a sectional view taken along the - arrow in FIG. 6, and FIG. 9 is a sectional view taken along the - arrow in FIG. 6.

That is, 1 is a die holder. A guide post 2 is fixed to the die holder 1 together with a guide post stopper 3. The guide post 2 is slidably fitted into a ball retainer 6 installed in a guide bush 5 fixed to the punch holder 4, and a coil spring 7 is fitted around the outer periphery. It is something that

A die plate 8 is positioned and fixed on the upper surface of the die holder 1 with a bucking plate 9 sandwiched therebetween by a dowel pin 10.

11 is a punching punch 13a together with a punching play opening 2;
, the bending punch 13b, the pilot pin 14, the sub-guide post 15, etc., and is fixed to the lower surface of the punch holder 4.

A stripper plate 16 is supported slidably up and down along the sub-guide post 15, and fastens the lower end of a stripper bolt 17 supported in a hole of the punch holder 4 so as to be slidable up and down.

The spring 18 is loosely fitted onto the stripper bolt 17 between the punch holder 4 and the stripper plate 16, and
As shown in FIG. 8, the stripper bolt 17 and the stripper bolt 17 are arranged along a straight line L2 connecting the center of the sub-guide post opening 5 in the direction of movement of the material 19 and the center of the sub-guide post 15. 1
9 is a material that is positioned by a pilot pin 14 and punched by a punch 13.

20 is a dive bush, 21 is a sub guide bush, 22
is a stripper bush.

Reference numeral 23 denotes a guide plate that guides the material 19 attached to the upper surface of the die plate 8.

This guide plate 23 is made of a material 19 as shown in FIG.
It is positioned by the dowel pin 24 installed on the straight line L1 connecting the center of the sub-guide bush 21 and the center of the sub-guide bush 21 in the direction of movement, and the fastening bolt 25 is
It is fastened to the die plate 8 by. Further, as shown in FIG. 5, a knock pin 10 for positioning the die plate 8 on the die holder 1 is placed on a straight line M1 parallel to this straight line L1.
A fastening bolt 26 for fastening the die plate 8 to the die holder 1, and a fastening bolt 27 for fastening the bucking plate 9 to the die plate 8 are installed. Further, as shown in FIG. 9, a knotter pin 28 for positioning the punch plate 16 on the punch holder 4, a fastening bolt 29 for fastening the punch plate 16 to the punch holder 4, and a backing plate 12 are arranged on a straight line M2 parallel to the straight line L2. A fastening bolt 30 fastened to the punch plate 16 is installed. With the above configuration, the punch holder is repeatedly lowered and raised relative to the die holder while moving the material 19 from the left side to the right side in FIG. Pilot pin 1
4 are fitted and positioned and formed by another punch 13a or bending punch 13b to complete the product.

By the way, the arrangement of the sub guide post 15 or the sub guide bush 21 is, for example, the punch holder 4 and the die holder 1.
Position coordinates (Xl
, yl) that can uniquely be determined in advance, and the arrangement is determined as shown in FIG. The arrangement of the spring 18 together with the stripper bolt 17 is such that, as shown in FIG. Place them one after another within a range that does not cause interference. The number N1 of the springs 18 together with the stripper bolts 17 is determined by the following equation (1). Here, 11 is the distance between both ends of the Saso guide.

Also, [ ] is a Gauss symbol. When N1 is an odd number, half N
Arrange 12 on the -1 side, place one in the center of 21, and when the number is even, place one.

2. By the way, when using the guide plate 23 for guiding the material 19, the fastening bolts 25 for fastening the die plate 8 and the guide plate 23 and the dowel pins 24 for positioning them are arranged at the spring arrangement position.

Note that even if a pin is installed on the die plate 8, it can also serve as the guide plate 23. The arrangement of the fastening bolts 26, 27, 29, 30 and the knock pins 10, 28 is as shown in FIG.
) As a reference, they are arranged sequentially from both ends at pitch P2.

The total number N2 of fastening bolts and knock pins is determined by the following equation (2). 1. ．． P2 Here, 12 is the difference between plate dimension IA and 2 x X2 (12=
IA-2X2).

Also [N1? It is the qus symbol. When N2 is an odd number, place one book on one side and place one in the center of the 12, and when N2 is even, place one on one side. As shown in Fig. 13, the fastening bolts 26 and 29 between the die plate 8 and the die holder 1, and the punch plate 11 and the punch holder 4 are allotted from the initial positions at both ends.
Difference between die plate 8 and die plate. The fastening bolts 27 and 30 between the punch plate 9, the punch plate 11, and the punch plate 12 are attached at both ends 2 as shown in O.
Assign alternately starting from the th position. Also, Notsukupin 10
, 28 is the butting between the die plate 8 and the die plate as shown in 2. The right end or the second position from the right of the fastening bolt positions between the plate 9, the punch plate 11, and the bucking plate 12 of the punch plate are assigned so as to be point symmetrical in the vertical direction. By the way, when using a bucking plate for the stripper plate 16, a fastening bolt is assigned to a fastening position between the die plate 8 and the die holder 1 (the punch plate 11 and the punch holder 4). In this way the first
As shown in Figure 4, the arrangement of springs, fastening bolts, and knock pins can be determined. As explained above, according to the present invention, the arrangement of sub-guide posts, springs, fastening bolts, and knock pins, which had been determined quite empirically in the past, has been standardized in the press mold, thereby making the press mold relatively simple. The processing system is also well-balanced and systemized by computer-engineered design.
It is possible to obtain a press mold with sufficient fastening force and homogeneity, and it is also possible to accurately calculate the strength of the press mold and to calculate spring specifications suitable for the processing load. This has the effect of greatly reducing the time and effort required for checking, etc., and greatly shortening the time required for press die design and press die production.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the overall configuration of an embodiment of a press mold according to the present invention, FIG. 2 is a plan view showing the die side of the press mold shown in FIG. 1, and FIG. 2 is a side view, FIG. 4 is a cross-sectional view taken in the direction of the arrow in FIG. 2, FIG. 5 is a cross-sectional view taken in the direction of the arrow in FIG. A plan view, FIG. 7 is a side view of FIG. 6, FIG. 8 is a cross-sectional view taken along the - arrow in FIG. 6, FIG. 9 is a cross-sectional view taken along the - arrow in FIG. 6, and FIG. A diagram showing the arrangement,
Figure 11 is a diagram showing the arrangement of springs, Figure 12 is a diagram showing the arrangement of fastening bolts and knock pins, Figure 13 is a diagram showing how to allocate fastening bolts and knock pins, and Figure 14 is a diagram showing the determined sub-guide. FIG. 3 is a diagram showing the arrangement of posts, springs, fastening bolts, and knock pins. Explanation of symbols, 1...Die holder, 4...
・Punch holder, 8...゜Die plate, 9...
...Backing plate, 10,28...
Knot pin, 11... Punch plate, 12.
...Buckking plate, 15...Sub guide post, 16...Stripper plate,
18... Spring, 26, 27, 29, 30
・・・・・・Tightening bolt.

Claims (1)

[Claims] 1. A die holder to which a die plate is fastened via a packing plate, and a punch holder to which a punch plate for holding a punch is fastened via a packing plate,
The guide post is fitted with a retainer and brought relatively close to each other, and is pressed against the material guided by the guide plate on the die plate by a stripper plate supported vertically and slidably on the punch holder side, and the material is removed by the punch. In the press mold for molding x_1<x_2, y_1>
y_2, and sub-guide posts for mutually guiding the die plate and the punch plate are arranged at at least four locations with equal dimensions of approximately (x_1, y_1) from the four corners of the plate, and the stripper The spring provided to press the plate against the material is connected to the center point in the X-axis direction connecting the center of the sub-guide post with reference to the position of the sub-guide post provided at both ends in the X-axis direction, which is the moving direction of the material. N_1, N_1 on the straight line of 1 at almost equal intervals from both ends at a pitch of p_1.
= [l_1/p_1]-1 (where l_1 is the distance between the sub-guide posts), fastening bolts arranged in two rows on both sides and fastening the die plate to the die holder and the punch plate to the punch holder; Dowel pins for positioning, fastening bolts, etc. for tightening the backing plate to the die plate and the backing plate to the punch plate are set with approximately equal dimensions of approximately (x_2, y_2) from the four corners of the plate. Based on the starting end position of the fastening bolt provided at both ends of the fastening bolt in the X-axis direction, a pitch p_2 is drawn from both ends on the second straight line in the X-axis direction that connects the starting end position of this fastening bolt.
N_2 pieces at equal intervals, N_2=[l_2/p_1]+1
(where l_2 is the distance between the starting end positions of the fastening bolts) A press mold characterized by being arranged in two rows on both sides. 2. A fastening bolt for attaching the guide plate for guiding the material to the die plate and a dowel pin for positioning are arranged on the first straight line connecting the centers of the sub-guide bushes to which the sub-guide post is fitted. A press mold according to claim 1.