JP3236358B2 - Punch press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch press having an improved support frame structure for supporting a die head and a press.

[0002]

2. Description of the Related Art The frame structure of a conventional punch press has a bridge structure comprising a rectangular parallelepiped main body mounted on a floor and an upper frame connecting left and right ends of the main body in the longitudinal direction. A space is provided between the body and the main body.

A fixed table on which a plate material is placed in a horizontal direction is provided on the main body of the space. One side of the fixed table has a holding device for holding the placed plate material, and a holding device for holding the plate material. And a movement positioning device for moving and positioning the plate material. On the opposite side of the space portion provided with the moving positioning device, there is an upper turret that rotates integrally with an upper rotation shaft held by an upper frame, and below the upper turret is held by the main body and is the same as the upper rotation shaft. There is a lower rotating shaft that rotates with a core, and a lower turret is provided on the lower rotating shaft so as to rotate integrally.

A number of punches are arranged on the same circumference on the upper turret, and dies corresponding to the punches are arranged on the same circumference on the lower turret. When a corresponding combination of these punches and dies is rotated on the center of the fixed table, a press ram provided on the upper frame descends above it and is positioned between the punch and the tie. The punching process is performed on the sheet material.

[0005] In contrast to the punch press described above, a punch head and a die head are provided on the inner facing surface of the portal frame so as to be movable up and down, and a plate is horizontally held between the punch head and the die head. There is also known a punch press in which a punch and a die head are moved synchronously, the die head is pressed against one surface of a plate material, and the punch head is operated from the opposite side to perform punching.

[0006] The frame structure in the head moving type punch press also has the same structure as the above-described bridge structure, which is vertically erected.

[0007]

In a frame having the above-described bridge structure, when a punching load is generated during punching, the central portion of the upper frame is deformed so as to bulge upward, and the upper portion held by the upper frame is deformed. A misalignment between the upper rotation axis of the turret and the lower rotation axis held by the main body occurs. For this reason, there is a problem that it is impossible to process a thin plate or the like with a small clearance between the punch and the die.

In order to solve this problem, a swan-neck structure has been considered. In order to hold the upper turret, another inverted L-shaped frame is provided, and the swan-neck frame holds the upper turret. Since the structure is cantilevered, there is a problem that the upper turret bends due to its own weight or is displaced by a side load at the time of overtaking, and it cannot be particularly adapted to a head-moving punch press.

The present invention has been made in view of the above circumstances, and has as its object to provide a punch press in which a support frame is not deformed even when a punching load is applied. It is.

[0010]

To achieve the above object, a punch press according to the present invention supports a press portion outwardly at a distance from a mold head supporting frame supporting both ends supporting a mold head portion. With the press support frame
The mold head and press are free to move in synchronization
And being mounted on each support frame .

[0011]

[Action] In the punch press according to the above configuration, and the mold head support frame supporting the both ends support a die head portion, with being spaced apart from the press support frame supporting the press section, the die head Department and press department are the same
When the press section is activated and the work is punched into the work with the die head, the displacement of the press support frame due to the press punching load Even if this occurs, this displacement is not transmitted to the mold head support frame, so that misalignment of the mold head is prevented, and accurate punching is performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

Referring to FIG. 1, a punch press 1 comprises:
A lower frame 3 installed in a horizontal direction, a side frame 5 erected vertically on left and right end surfaces of the lower frame 3, and a first frame erected in parallel with the lower frame 3 above the side frame 5. The upper frame 7 forms a press support frame with its outer frame having a bridge structure.

In the outer frame having the bridge structure, there is a second upper frame 9 provided in parallel to the first upper frame 7, and both ends of the second upper frame 9 The first upper frame 7 is formed shorter than the first upper frame 7, and a column frame 11 erected on the lower frame 3 is attached to both ends thereof with both ends supported,
It has a mold head support frame. Therefore, the second upper frame 9 is provided in a bridge structure independent and separated from the outer frame.

In the frame having the double bridge structure, the first upper frame 7 has a press ram 1
The punch head 15 is provided on the second upper frame 9, and the die head 17 is provided on the upper surface of the lower frame 3.
Are provided respectively.

The press ram section 13 is composed of a hydraulic cylinder 19 operated by, for example, hydraulic pressure and a ram 21 provided integrally with a piston provided in the hydraulic cylinder 19. The ram 21 is moved downward by the ejection, and presses the punch head 15 attached to the second upper frame 9.

The punch head 15 has a mounting portion 23 for detachably mounting the punch P, and the tip of the mounted punch P is struck by the operation of the ram 21 onto the die D of the die head 17 so that the punch P and the die D And a punching process is performed on the plate material placed between them.

The die head 17 comprises a mounting table 25 on which the die D is removably mounted, and a molding cylinder 27 provided below the mounting table 25, and an additional pressure for punching is provided. Or, they are linked.

In the punch press 1 having the above-described configuration, when a plate material is placed on the die D of the die head portion 17 and the press ram portion 13 provided on the first upper frame 7 is operated,
The ram 21 descends and the pan provided on the second upper frame 9
Press down on the punch P of the switch head 15, the punch P is punched participating punching load plate material in contact with the plate material and the die D are performed. When this punching load is applied, this load is received by the first upper frame 7, so that punching can be performed without affecting the second upper frame 9. Therefore, even if the first upper frame 7 is deformed, the deformation is not transmitted to the second upper frame 9 and the punching can be performed without causing the deformation.

FIG. 2 shows the press ram 13, the punch head 15, and the die head 17 all movably mounted.

In FIG. 2, an inverted recess 29 is provided on the lower surface of the first upper frame 7, and a guide 31 is provided in the inverted recess 29. The press ram 13 is movably suspended from the guide 31 so that the press ram 13 can be moved in the longitudinal direction of the first upper frame 7.

The second upper frame 9 is provided with a space 33 over the range of movement of the press ram 13. A guide 35 similar to that provided in the first upper frame 7 is provided on the lower surface of both sides where the space 33 is provided.
Is provided. The guide 35 has a punch head 15
The engaging portion 37 extended from the mounting portion 23 for mounting the punch P is engaged, and the punch head portion 15 is moved to the press ram portion 1.
3 so as to be moved in the same direction at the same time.

The lower frame 3 has a recess 3 on the upper surface side.
A molding cylinder guide 41 for moving the molding cylinder 27 to the bottom surface of the concave portion 39 is provided.
Is laid. A die head guide 43 for moving the die head portion 17 is provided on the upper surface side of both sides of the concave portion 39, and a mounting base engaging portion 45 for engaging with the die head guide 43 is provided on the mounting base 25 of the die head portion 17. is there.

The heights of the molding cylinder guide 41 and the die head guide 43 are adjusted so that the upper surface of the molding cylinder 27 and the bottom surface of the die head portion 17 are slightly in contact with each other.

The press ram section 13 constructed as described above
Although not shown, the movement of the punch head 15, the die head 17, and the molding cylinder 27 may be performed by a drive motor and a rack, a pinion, or the like, or may be performed by a ball screw. In any case, the four members simultaneously move in the same direction by the same distance, and in particular, the punch head unit 15 and the die head unit 17
It is formed so that there is no misalignment.

As described above, even in the case of a punch press in which the press ram 13 is moved, the press ram 1
3 and the punch head portion 15 are mounted separately on the first upper frame 7 and the second upper frame 9 which are provided separately from each other, so that the punching load applied to the press ram portion 13 is increased. Becomes unrelated to the punch head portion 15, and the misalignment between the punch P and the die D due to deformation during punching does not occur.

[0027] In actual施例mentioned above, the die head a frame structure of a punch press, for supporting the press support frame, the mold head supporting frame, die head section 17 for supporting the punch head portion 15 for supporting the press ram 13 By dividing the support frame into three parts, the frame that receives the punching load is limited to the press support frame that supports the press ram portion 13. Therefore, the occurrence of misalignment between the punch head and the die head is eliminated, and high-precision punching is performed. Can do it.

It should be noted that the present invention is not limited to the above-described embodiment, and by making appropriate changes,
Other embodiments can be implemented.

[0029]

As described above, according to the present invention, since the construction is as described in the claims, the displacement of the press supporting frame is not affected by the pressing load during the punching process. Irrespective of the frame, there is no misalignment between the punch head and the die head in the die head, and extremely high-precision punching can be performed.

[Brief description of the drawings]

FIG. 1 is a front view of a frame structure of a punch press according to an embodiment of the present invention.

FIG. 2 is a sectional view of a punch moving type punch press using the punch press frame structure of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Punch press 3 Lower frame 7 1st upper frame 9 2nd upper frame 13 Press ram part 15 Punch head part 17 Die head part

Claims (1)

(57) [Claims] 1. A Ri name by placing a press support frame supporting the pressing portion outwardly spaced die head supporting frame across the support supporting the die head, the mold head
Section and press section can be moved freely in synchronization with each support frame
Punch press and said that you have installed.