JP2002113533A - Punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punch press capable of reliably supporting even a heavy punch holder at a predetermined height position, and smoothly elevating/lowering the punch holder during the punching. SOLUTION: A punch accommodation hole 3 for accommodating the punch holder 2 in an elevating/lowering manner is formed in a punch holder supporting means 1 which is rotable or horizontal movable such as straight movement. A locking recess 13 is formed in a side surface of the punch holder 2. locking member 11 which is engaged with the locking recess 13 in an engaging/ disengaging manner and supports the punch holder 2 at the predetermined height position is arranged. This locking member 11 is engaged/disengaged by an engaging/disengaging mechanism 12. The surface supporting the punch holder 2 of the locking member 11 is perpendicular to the punch holder elevating/ lowering direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret type and a cartridge type punch press.

[0002]

2. Description of the Related Art In a punch press, it is necessary to hold a punch holder supporting means such as a turret so that the punch holder does not drop. Conventionally, a spring 35 is used as the holding structure, as shown in an example in FIG. In the figure, the upper turret 31 has a punch accommodating hole 33 for accommodating the punch holder 32 in a vertically movable manner.
One or a plurality of holder supports 34 that can move up and down are arranged around the punch receiving holes 33, and the holder supports 34 are urged upward by a spring 35. These holder supports 34 have locking claws 34 a projecting from the slits 36 formed in the peripheral wall of the punch receiving hole 33 toward the punch receiving hole 33. On the other hand, engaging grooves 37 extending from a predetermined height of the middle body of the holder to the lower end of the holder are formed at positions on the outer peripheral surface of the punch holder 32 corresponding to the locking claws 34a. By engaging the locking claws 34a of the support 34, the punch holder 32 is supported at a predetermined height position in the punch receiving hole 33 by the plurality of holder supports 34 via the springs 35. The pressing of the punch holder 32 is performed against the urging force of the spring 35.

[0003]

However, in the above configuration, since the punch holder 32 is supported at a predetermined height position via the spring 35, the weight of the punch holder 32 is limited. In addition, the support height of the punch holder 32 gradually decreases due to the aging of the spring 35, and eventually becomes impossible to support, so that the spring 35 needs to be replaced.

An object of the present invention is to solve the above-mentioned problems and to provide a punch press that can reliably support a heavy punch holder at a predetermined height position and can smoothly move the punch holder up and down during punching. .

[0005]

A punch press according to the present invention is capable of engaging and disengaging a punch holder supporting means having a punch accommodating hole for accommodating a punch holder in a vertically movable manner, and a locking recess provided on a side surface of the punch holder. And a locking member for supporting the punch holder at a predetermined height position by engaging with the locking member, and an engaging / disengaging operation mechanism for engaging and disengaging the locking member. According to this configuration, the locking member is engaged with the locking recess on the side surface of the punch holder, so that the punch holder is supported at a predetermined height position in the punch receiving hole of the punch holder supporting means. When the engagement of the engagement member with the engagement recess is released by the engagement / disengagement operation mechanism,
The vertical movement of the punch holder is allowed. As described above, since the punch holder is supported by the engaging member which is engaged and disengaged, even a heavy punch holder can be reliably supported at a predetermined height position, and there is no problem that the supporting force is reduced due to deterioration of the constituent members. Further, at the time of punching, it is only necessary to release the locking of the locking member, and it is not necessary to lower the punch holder against the spring, so that the punch holder can be raised and lowered smoothly.

In the present invention, the surface of the locking member supporting the punch holder is a surface perpendicular to the punch holder lifting / lowering direction, and the engaging / disengaging operation mechanism biases the locking member in the locking direction. And a release mechanism for releasing the locking member from the locking recess by releasing the locking member against the urging means. In this configuration, the surface of the locking member supporting the punch holder is a surface perpendicular to the punch holder elevating direction, so that the support of the punch holder by the locking member is further ensured. Further, when the engaging / disengaging operation mechanism is configured as described above, the punch holder in the supported state can be switched to a state in which the punch holder can be moved up and down with a simple configuration. In the case of this configuration, the punch holder supporting means is supported movably in a horizontal direction by a punch frame, the locking member is installed so as to be able to advance and retreat in a linear direction, and the release mechanism is provided on the locking member. It may be constituted by an inclined surface part whose upper part is retreated and which can be lifted and lowered, which has an inclined surface part that slides on the inclined surface part, and a pressing head that pushes down the releasing member. The press-down head may be provided near the horizontal direction of a ram that is supported by the punch frame and that moves the punch holder up and down. In this configuration, the locking member moves forward and backward to engage and disengage with the engagement recess, and the locking member advances and retreats by vertically moving the releasing mechanism. Can be easily arranged. The movement of the punch holder supporting means in the horizontal direction is performed so as to change the position of the punch receiving hole, and is not limited to the linear movement, and may be a turning movement around a predetermined axis.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a vertical sectional view showing a support structure of a punch holder in the punch press of this embodiment. This punch press is of a turret type, and the punch holder supporting means 1 is composed of a turret that can rotate around a vertical axis. A die holder supporting means (not shown) composed of a coaxial lower turret is provided below the punch holder supporting means 1 composed of the turret. The punch holder supporting means 1 is provided with a plurality of punch receiving holes 3 for receiving the punch holder 2 so as to be able to move up and down, and is arranged on the outer periphery in a circumferential direction. Turning movement.

The punch holder 2 is a member holding the punch tool 4, and the punch tool 4 is held below the punch holder 2 by set bolts 5. Punch tool 4
Are surrounded by a stripper 6 provided at the lower end of the punch holder 2. A key 8 is fixed to a side portion of the punch holder 2 by a bolt 7. The key 8 engages with a key groove 3 a formed on the inner peripheral surface of the punch receiving hole 3, and rotates the punch holder 2. The phase is maintained. The head of the punch holder 2 is connected to the ram 9 when the punch holder 2 is indexed to a punch position P (FIG. 4) where the punching is performed.
It is a connection part 2a of a shape. The punch holder 2 accommodated in the punch accommodation hole 3 is provided with a punch holder height maintaining mechanism 10.
Is held at a predetermined height position.

The punch holder height maintaining mechanism 10 includes an engaging member 11 and an engaging and disengaging mechanism 12 for engaging and disengaging the engaging member 11. The locking member 11 is a member that detachably engages with a locking recess 13 provided on a side surface of the punch holder 2 to support the punch holder 2 at a predetermined height position. The locking member 11 is housed in a lateral hole 14A of an L-shaped guide sleeve 14 which is installed near the punch receiving hole 3 on the upper surface of the punch holder supporting means 1, and is formed in the lateral hole 14A. It is installed so that it can move forward and backward in a linear direction by a guide. The locking recess 13 has a keyway shape formed vertically from the middle part of the side surface of the punch holder 2 to the lower end.

The engagement / disengagement operation mechanism 12 includes an urging means 15 for urging the locking member 11 in the locking direction, and a locking and disengaging mechanism for disengaging the locking member 11 from the locking recess 13 against the urging means 15. And a release mechanism 16 for releasing the state. The urging means 15
For example, it consists of a coil spring. The release mechanism 16 is provided integrally with the locking member 11 and has an inclined surface portion 11a whose upper portion is retreated.
A release member 17 having an inclined surface portion 17a that slides on the inclined surface portion 11a, and a lifting head 18 that pushes down the release member 17. Release member 1
The inclined surface portion 17a of 7 is not limited to a planar shape as shown, but may be a curved surface shape.

The release member 17 is accommodated in the vertical hole 14B of the guide sleeve 14 so as to be able to move up and down. Release member 1
7 is provided with a horizontally oriented guide pin 19 which is engaged with a vertically long guide slit 20 formed in the wall of the vertical hole 14B. By this engagement, the release member 17 is housed in the vertical hole portion 14B of the guide sleeve 14 so that it can only move up and down. The press-down head 18 is, for example, a lifting cylinder, and is installed on the press frame 21 supporting the ram 9 at a position close to the ram 9 at a punch position P where punching is performed. The pressing head 18 is commonly used for the release mechanism 16 of each punch holder 2 indexed to the punch position P by the indexing rotation of the punch holder supporting means 1.

The operation of the above configuration will be described. The punch holder 2 accommodated in the punch accommodating hole 3 of the punch holder supporting means 1 is supported at a predetermined height position by the punch holder height maintaining mechanism 10 as shown in FIG. ing. At this time, the locking member 11
Are urged in the locking direction by the urging means 15 of the engaging / disengaging operation mechanism 12 and are engaged with the locking recesses 13 on the side surface of the punch holder 2. As a result, the punch holder 2 is supported at a predetermined height on the upper surface of the locking member 11, that is, a surface perpendicular to the vertical direction of the punch holder 2.

When the punch holder supporting means 1 is indexed and rotated in the horizontal direction, and the desired punch holder 2 is indexed at the punch position P, the punch holder 2 is connected to the T-shaped connecting portion 2a of the head.
Is connected to the ram 9. At this time, punch holder 2
Comes to a position below the press-down head 18 installed at a position close to the ram 9. In this state, as shown in FIG. 4, the push-down head 18 descends and pushes down the release member 17. When the release member 17 is depressed, the locking member 11 retreats against the urging means 15 via the inclined surface portion 17a and the inclined surface portion 11a slidingly contacting the releasing member 17, and the locking member 11 is moved from the locking concave portion 13 of the punch holder 2 to It is released and the locked state is released. As a result, the punch holder 2 in the punch receiving hole 3 can move up and down integrally with the ram 9. In this state, the ram 9 is lowered to perform punching on the plate material.

As described above, in this punch press, the locking member 11 is engaged with the locking recess 13 provided on the side surface of the punch holder 2, so that the punch holder 2 is moved into the punch receiving hole of the punch holder supporting means 1. 3 and is supported at a predetermined height position. In addition, the locking member 1 is
The release of the engagement of the first holder 1 with the locking recess 13 allows the punch holder 2 to move up and down. Therefore, unlike the support by the spring force or the like, even the heavy punch holder 2 can be reliably supported at the predetermined height position, and the punch holder 2 can be smoothly moved up and down during punching.

The engagement / disengagement mechanism 12 includes an urging means 15 for urging the locking member 11 in the locking direction and a locking recess 13 of the punch holder 2 against the urging means 15. With the release mechanism 16 for releasing and releasing the locked state, the supported punch holder 2 can be switched to a state in which it can be raised and lowered with a simple configuration.

The locking member 11 is installed so as to be able to advance and retreat in a linear direction, and a release mechanism 16 is provided on the locking member 11 and has an inclined surface portion 11a whose upper portion is retracted,
Since the release mechanism 17 includes a lifting member 17 having an inclined surface portion 17a that slides on the lifting member 17 and a push-down head 18 that pushes down the release member 17, the release mechanism 16 can be easily configured so as not to hinder the advancement and retreat of the locking member 11. Can be placed. Press-down head 1
8 can be used in common for a plurality of punch holders 2 and has a drive source such as a cylinder device,
The configuration is simple.

In this embodiment, the case of the turret punch press has been described, but the present invention can also be applied to a cartridge type punch press. In this case, the cartridge serves as a punch holder supporting means.

[0018]

The punch press according to the present invention removably engages with a punch holder supporting means having a punch accommodating hole for accommodating the punch holder in a vertically movable manner and a locking recess provided on a side surface of the punch holder. A locking member for supporting the punch holder at a predetermined height position and a disengagement operating mechanism for engaging and disengaging the locking member, so that even a heavy punch holder can be reliably supported at a predetermined height position, and The punch holder can be raised and lowered smoothly during processing. Urging means for urging the engagement / disengagement mechanism in the direction in which the engaging member is engaged with the engaging member in a direction perpendicular to the punch holder elevating direction, Is released from the locking recess against the urging means to release the locked state, the support of the punch holder by the locking member becomes more reliable, and with a simple configuration In addition, the supported punch holder can be switched to a state in which it can be moved up and down. The punch holder supporting means is supported by a punch frame so as to be movable in a horizontal direction, and the locking member is installed so as to be able to advance and retreat in a linear direction.
An inclined surface portion provided on the locking member and having an upper portion receding;
A lifting member having an inclined surface portion that slides on the inclined surface portion and a press-down head that presses down the release member. When provided near the horizontal direction, the release mechanism can be easily arranged so as not to hinder advance / retreat of the locking member.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a punch holder supporting structure of a punch press according to an embodiment of the present invention.

FIG. 2 is a plan view of a main part of the punch holder supporting structure.

FIG. 3 is a front view of a main part of the punch holder supporting structure.

FIG. 4 is an explanatory view of a support releasing operation in the punch holder supporting structure.

FIG. 5 is a longitudinal sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Upper turret (punch holder support means) 2 ... Punch holder 3 ... Punch accommodation hole 11 ... Locking member 11a ... Inclined surface part 12 ... Disengagement operation mechanism 13 ... Locking concave part 15 ... Urging means 16 ... Release mechanism 17 ... Release member 17a: inclined surface portion 18: push-down head

Claims (3)

[Claims] A punch holder supporting means having a punch accommodating hole for accommodating a punch holder in a vertically movable manner, and a punch holder having a predetermined height by being removably engaged with a locking recess provided on a side surface of the punch holder. A punch press, comprising: a locking member for supporting the locking member; and a disengagement operation mechanism for engaging and disengaging the locking member. 2. A surface for supporting the punch holder of the locking member, the surface being perpendicular to the punch holder elevating direction, wherein the engagement / disengagement operation mechanism includes an urging means for urging the locking member in the locking direction. And a release mechanism for releasing the locking member from the locking recess against the urging means to release the locked state. 3. The punch holder supporting means is supported by a punch frame so as to be movable in a horizontal direction, the locking member is installed so as to be able to advance and retreat in a linear direction, and the release mechanism is provided on the locking member. And an upwardly receding release member having an inclined surface portion that slides on the inclined surface portion, and a press-down head that presses down the release member, and the press-down head is supported by the punch frame. 3. The punch press according to claim 2, which is provided near a horizontal direction of a ram for lifting and lowering the punch holder.