JP3104015B2 - Composite mold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a set of dies comprising a movable die and a fixed die, and a punch comprising a movable punch and a fixed punch. It belongs to a composite mold that efficiently performs shearing.

[0002]

2. Description of the Related Art Conventionally, in press working, a plurality of sets of punches and dies are provided on an upper turret and a lower turret, respectively, in order to efficiently perform shearing or punching of parts having various shapes by saving the setup change of a die. There was a turret punch press installed. Also, different from the turret punch press, it is a common type that has a pair of dedicated punches and dies for each part of various shapes, and changes the dies for each process and performs shearing processing etc. There was a press mold.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventional press die, the former includes a plurality of sets of punches and dies, and exchanges the punches and dies by rotating the upper turret and the lower turret. Therefore, although the switching of the processing steps can be easily performed, on the other hand, the structure is complicated and expensive, and it has been somewhat difficult to secure the accuracy of the punch and die positions. In the case of the latter, since a part of one shape can be generally processed only by one set of molds, the setup must be changed every time the process is changed, which is very troublesome. And
If some of the different parts have the same shape, the different parts are machined using a mold that molds the same shape. It could only be done. Also, changing the "contact" etc. and processing several steps to form a constant shape was also performed, but it was not very one-shape processing form, and it was further changed to a set of dies as progressive die In some cases, parts of a single shape are formed by performing multiple steps such as punching and bending, but this is in the category of processing one type of part with one die.

[0004] As described above, shearing of parts having different shapes with a single set of dies has not been practiced, so that various types of dies have to be manufactured, stored, and used, and the manufacturing cost has been increased. There were many negative aspects in terms of work efficiency, production management, etc. In view of the above problems of the conventional press die, the present invention is simple in structure and operation, and can process a plurality of parts with a single set of dies, in particular, continuous punching and shearing. An object of the present invention is to provide a composite mold that can be realized by a set of molds.

[0005]

In order to solve the above-mentioned problems, a composite mold according to the present invention comprises a die plate having a gap formed by a movable die and a fixed die, and a punch fitted into the gap is fixed to the movable punch. A composite mold comprising a punch plate formed by a punch and performing continuous punching and shearing of the same pattern, wherein the movable die is
The movable punch can be moved by a moving mechanism in a direction perpendicular to the pressing direction and moves between a position adjacent to the fixed die and a separated position, thereby changing the shape of the gap formed in the die plate, and the movable punch is sheared. It has a punch part, can move up and down by a setting mechanism in the press direction adjacent to the fixed punch, and can change the shape of the punch by projecting the movable punch downward according to the gap shape.

[0006] With this configuration, if the movable die is adjacent to the fixed die and the movable punch is raised, the workpiece can be punched by the punching pattern formed by the fixed die and the fixed punch. Then, the movable die is separated from the fixed die by the moving mechanism to change the gap shape, and the movable punch is projected downward by the setting mechanism in accordance with it. Shearing is performed by the gap formed by moving the movable die.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a composite mold according to the present invention will be described below in detail with reference to the drawings. The dies shown in FIGS. 1 to 4 are formed by simultaneously punching two types of electric conductors having different total lengths used in a distribution board or the like.
FIG. 1 is a plan view of a die plate, and FIG. 2 is a plan view of a punch plate corresponding to FIG. FIG. 3 shows FIG.
FIG. 4 is a plan view of a die plate showing a case where the movable die is moved, and FIG. 4 is a plan view of a punch plate corresponding to the die plate of FIG. In addition, the thick line part of FIG. 1, FIG. 3 shows the main punching pattern in the space | gap part enclosed by the cutting blade,
2 and 4 indicate punch portions surrounded by cutting blades corresponding to FIGS. 1 and 2, respectively.

First, the die portion will be described with reference to FIGS. 1 and 3. Reference numeral 20 denotes a die plate, 21 denotes a fixed die, 22 denotes an auxiliary post, 23 denotes a mounting screw, and 24 denotes a position of a knock pin. The fixed die 21 is provided with six branch bars 2 on each of the left and right sides in the longitudinal direction (the left and right direction in the figure).
1a, 21a, and their mounting holes 21b, 21b,
An air gap is formed in which two types of electric conductors having a... Can be integrally formed. At the left end of the fixed die 21, a movable die 25 that can reciprocate in the longitudinal direction is provided.

On the side surface of the die plate 20, brackets 26, 26 having an L-shaped cross section are attached, and the heads and the bottom of the mini cylinder 27 are bolted to the brackets 26, 26, respectively. And this mini cylinder 2
The moving mechanism including 7 is configured as follows. That is,
A reciprocating piston rod 28 protrudes from the head of the mini cylinder 27, and the mini cylinder 27 having the same structure
A piston rod 28 is attached to the opposite side of the die plate 20 by brackets 26 (not shown). Further, the tip ends of both piston rods 28 are integrated by being bolted to a connection fitting 29 so that synchronous operation is possible.

A connecting shaft 30 is screwed into the center of the left end of the movable die 25.
The movable die 25 is connected to the connecting shaft 3
0 and interlocking with the reciprocating operation of the piston rod 28 via the connecting fitting 29, the continuous punching position (the position in FIG. 1).
, And a reciprocating movement between a cutting shearing position (a position in FIG. 3).

An air cylinder 31 and a piston rod 32 which constitute a fixture in a direction perpendicular to the die plate 20 are provided on both sides of the die plate 20 at right angles to the piston rod 28 (the other side is not shown). The tip of 32 is screwed into a T-shaped fixing plate 33, 33 which comes into contact with the entire side surface when the movable die 25 moves away from the fixed die 21 to the left end position shown in FIG. The movable die 25 moves in conjunction with the reciprocating operation of the piston rod 28 as described above, and when moved to the left end, is locked by the fixed plate 33 pressed by the piston rod 32 at that position.

Next, the punch portion will be described with reference to FIGS. 40 is a punch plate, 41 is a fixed punch, 42
Denotes an auxiliary post, 43 denotes a mounting screw, and 44 denotes a position of a knock pin. The fixed punch 41 corresponds to the fixed die 21 and has six branch bars 21a, 21 on the left and right in the longitudinal direction (the left-right direction in the figure).
, and a punch for integrally punching and forming the mounting holes 21b, 21b,. And
At the left end of the fixed punch 41, a movable punch 45 is installed by being urged upward by a fixing bolt 49 and a spring 50 (shown in FIG. 5B). The movable punch 45 includes shearing punch portions 45a, 4 for shearing the work to the left and right.
5b is formed to protrude.

An air cylinder 46 and a piston rod 4 are provided on both side surfaces of the punch plate 40 in a direction perpendicular to the punch plate 40 and slightly above the upper surface of the movable punch 45.
7 are provided facing each other (the opposite side is partially omitted from the drawing). At the tip of the piston rod 47, a movable punch plate 48 is provided for entering the upper part of the movable punch 45 and projecting the movable punch downward, and constitutes a movable punch setting mechanism together with the air cylinder 46 and the piston rod 47. doing. The movable punch plate 48 is moved by the piston rod 47 to the punch plate 4.
0, the movable punch 45 enters above the movable punch 45 by the cam action between the inclined surfaces respectively provided on the upper and lower surfaces of the movable punch 45 and the movable punch plate 48 which come into contact with each other. Is pressed down below the punch plate 40 and fixed at that position.

The die plate 2 provided with the movable die 25 adjacent to the fixed die 21 is constructed as described above.
0, the movable punch 45 is raised and the punch plate 40
With the punch plate 40 housed therein, six branch bars 21a, 21a,.
21b can be punched and the same pattern can be continuously punched by shifting the work by the amount of the pattern.

Further, by separating the movable die 25 from the fixed die 21 and projecting and fixing the movable punch 45 downward, the work is cut by the shearing punch portions 45a and 45b of the movable punch 45, so that shearing and punching can be performed. Simultaneous processing is possible, and two types of electric conductors having different overall lengths can be obtained with one type of mold. Therefore, it is possible to shorten the setup time, improve the work efficiency and reduce the total cost, and also have the advantages of requiring less time and space for storing the mold.

In the present embodiment, the movable die 25 and the movable punch 45 are reciprocated by the air cylinder and the hydraulic cylinder. However, the moving mechanism and the setting mechanism are not limited to those described above. The cam part, the material feeding part, the movable die and the movable punch of the press machine can be controlled by NC, so that parts having more complicated shapes can be automatically and efficiently manufactured. Can be processed. Further, by providing a plurality of movable dies 25 and the corresponding movable punches 45 in one set of molds and appropriately combining them, shearing of parts having various shapes can be performed.

[0017]

As described above, in the composite mold according to the present invention, the fixed die and the movable die are provided on the die plate, the fixed punch and the movable punch are provided on the punch plate, and the die plate and the punch are provided. Since the press work is performed by appropriately combining the plates, continuous punching and shearing can be performed with one set of dies, shortening the setup time and improving work efficiency, and various types of dies. In some cases, the total cost can be reduced by omitting the production, and the labor and storage space for storage can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a die plate showing an example of an embodiment of a composite mold according to the present invention.

FIG. 2 is a plan view of a punch plate corresponding to the die plate of FIG. 1, showing an example of the embodiment of the composite mold according to the present invention.

FIG. 3 is a plan view of a die plate showing a state where the movable die of FIG. 1 is moved.

FIG. 4 is a plan view of a punch plate corresponding to the die plate of FIG. 3;

FIG. 5A is an explanatory cross-sectional view taken along the line AA in FIG. 3;
FIG. 5B is an explanatory cross-sectional view taken along the line BB of FIG. 4.

[Explanation of symbols]

20 die plate, 21 fixed die, 21a
Branch bar, 21b mounting hole, 22 position of auxiliary post, 23 position of mounting screw, 24 position of knock pin, 25 movable die, 26 bracket, 27 position
· Mini cylinder, 28 · · · Piston rod, 29 · · · Connection bracket, 30 · · · Connection shaft, 31 · · · Air cylinder, 32
..Piston rod, 33..Fixed plate, 40..Punch plate, 41..Fixed punch, 42..Position of auxiliary post, 43..Position of mounting screw, 44..Position of knock pin, 45..Movable Punch, 45a, 45b ··· Shearing punch portion, 46 ··· Air cylinder, 47 ·· Piston rod, 48 ·· Movable punch plate, 49 ··· Fixed bolt, 50 ·· Spring.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toru Kitagawa 3-86 Akatsuki-cho, Seto-shi, Aichi Prefecture Kawamura Electric Industry Co., Ltd. (56) References JP-A-60-9528 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21D 28/14 B21D 37/04 B26F 1/44

Claims (1)

(57) [Claims] 1. A die plate in which a gap is formed by a movable die and a fixed die, and a punch plate formed by a movable punch and a fixed punch in which a punch to be fitted in the gap is formed. And a processing die, wherein the movable die is movable by a moving mechanism in a direction orthogonal to a pressing direction, and moves between a position adjacent to the fixed die and a separated position, thereby forming a die. Changing the shape of the gap formed in the plate, wherein the movable punch has a shearing punch portion, is movable up and down by a setting mechanism in the press direction adjacent to the fixed punch, and moves the movable punch downward according to the gap shape. A composite mold that allows the shape of the punch to be changed by protruding.