JP2901101B2 - Punch press machine - 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, in which an automatic die changing device is mounted to make the die freely exchangeable.

[0002]

2. Description of the Related Art Conventionally, many punch presses equipped with an automatic die changing device (ATC) for automatically changing a die are commercially available. For example, there are various types of automatic die changers (ATC) such as a tornp type, an anritsu type, a multi-exchange type capable of exchanging a plurality of dies at a time, and a CB440 type by Behens.

[0003]

By the way, there is a problem in the automatic die changing apparatus that the die changing time is too long. For example, in the case of the trump type, the replacement time is about 10 to 12 seconds, and in the case of the Anritsu type, it is about 30 seconds. This tornp type performs the next die change process when the machine stops (when the machining time stops). (1) Work avoidance (2) Removal of the striker part tool (3) Insertion of the striker part tool (4) Four steps of work movement are performed, and it takes time to change dies.

In addition, in the case of the multi-exchange system, there is a problem that an unnecessary mold is exchanged.

In the model CB440 of Behens, an actuator for automatically changing the mold (a device for exchanging the mold with a striker and a chain magazine) is mounted on the turret, so that the space of the fixed table is increased, and the work space is increased. There is a problem that the surface is scratched.

SUMMARY OF THE INVENTION An object of the present invention is to provide a punch press in which the time required for mold replacement is reduced and the range of the fixed table is reduced, thereby reducing the number of drag scratches on the work. It is in.

[0007]

In order to achieve the above object, the present invention provides a punch magazine circulating by a chain system provided at an upper portion of a press body, and a chain system provided at a lower portion of the press body. A die magazine circulated by a punch, a punch block provided near the punch center and holding two punches and movable in one direction, and a die block provided near the punch center and held and movable in the other direction A die block, an automatic index mechanism provided on each of the punch block and the die block, and a cylinder provided on an upper portion of the press body and capable of exchanging the punch of the punch magazine and the punch of the punch block, The die of the die magazine and the die of the die block are provided at a lower portion of the press body and can be exchanged. And a another cylinder, a punch press machine, characterized by automatically changing the punches and dies.

[0008]

By using the punch press of the present invention, a punch magazine circulating by the chain method is provided at the upper part of the press body, and a die magazine circulating by the chain method is provided at the lower part of the press body. A punch block that is held in one direction and is movable in one direction near the punch center, a die block that holds two dies and is movable in the other direction is provided near the punch center, and an automatic index mechanism is provided in the punch block. And a die block are provided on each of the press bodies, and a cylinder for allowing the punch of the punch magazine and the punch of the punch block to be exchangeable is provided at an upper portion of the press body, and the die of the die magazine and the die of the die block are exchangeable. By providing another cylinder at the lower part of the press body, the mold replacement time It is shortened, and drag flaws of the work is reduced by reducing the range of the stationary table.

[0009]

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

FIG. 1 is a front view of a punch press according to the present invention.
FIG. 2 shows a plan view of FIG. 1 and 2,
As shown in FIGS. 3 to 5, a plurality of punches 3 are clamped by a plurality of punch clamp mechanisms 45 mounted on the chain 11 on the upper portion of the press body 1 and circulate in a chain system. At the lower part of the press body 1, there is provided a die chain magazine 9 in which a plurality of dies 7 are clamped and housed by a die clamping mechanism 45A mounted on the chain 13 and circulated in a chain system.

The chain magazines 5 and 9 for punches and dies are provided with sprocket wheels 15 and 17 provided for holding the chains 11 and 13, and the chains 11 and 13 can be extended and contracted via idlers 19 and 21. Tension cylinders 23 and 25 for adjusting the pressure and push / pull cylinders 27 and 29 for pushing and pulling the chains 11 and 13 for movement to the die transfer position.

In the vicinity of the center of the punch, two punches 3 and a die 7 are provided on the punch side and the die side, respectively.
Are provided with a punch block 31 and a die block 33 to which mold holders 53 and 55 to which are attached are mounted.

The punch block 31 and the die block 33 include a drive motor 47, a pinion gear 49, and a rack 5 that allow the punch block 31 to move in only one direction in the X-axis direction and the die block 33 in the Y-axis direction.
1, the punch 3 and the die 7 are moved to a mold changing position and a position immediately below the ram 57, and a worm gear 41 provided on the worm shaft 41 and the mold holders 53 and 55 as shown in FIG. Two auto index mechanisms 35 are mounted.

The mold exchanging cylinders 37 and 39 are
Punch 3 and die 7 provided on the upper and lower parts of press body 1 and clamped by clamp mechanism 45 of chain magazine 5 for punches and chain magazine 9 for dies.
And exchange the punch 3 and the die 7 inserted in the mold holders 53 and 55 of the punch block 31 and the die block 33 by pushing the chains 11 and 13 of the chain magazine 5 for punches and the chain magazine 9 for die. Die exchange is performed in cooperation with the push / pull cylinders 27 and 29 for pulling.

Further, as shown in FIG.
The punch 3 held and indexed is subjected to punching at a processing position immediately below the ram 57, facing the die 7 held and indexed by the mold holder 53.

As shown in FIGS. 1 and 8, a punch holding portion 59 having four claw portions 61 is provided at the tip of the mold changing cylinder 37, and the head of the punch 3 is clamped. 61A indicates the state of the claw portion where the clamp of the punch 3 is released. A die holding portion 63 having a similar function is also provided at the tip of the mold changing cylinder 39 to clamp the back surface of the die 7.

A series of operations for working and exchanging dies of the punch press machine configured as described above will be described.

A punch 3 and a die 7 are attached to each of the chain magazines 5 and 9, and punching is performed in a state where two punches 3 and a die 7 required for processing are attached to each of the blocks 31 and 33 respectively. Is done.

First, processing is performed by the dies 3 and 7 at the center of the punch. When the angles of the dies 3 and 7 are determined at the time of machining, as shown in FIG.
The rotation of the worm shaft 41 causes the worm gear 43 to rotate.
After turning to determine the mold angle, punching is started. When the machining by the dies 3 and 7 is completed, the blocks 31 and 33 move in one direction of the X axis and the Y axis, respectively.
Next, the molds 3 and 7 to be used come to the center of the punch immediately below the ram 57, and the next processing is started.

In this state, the dies 3, 7 used in the previous processing and the dies 3, 7 to be used next are exchanged. Block 3 for mold replacement cylinders 37 and 39
In order to take out the dies 3 and 7 in the dies 1 and 33, the dies 3 and 7 are extended after extending to the positions of the dies in the blocks 31 and 33 and the head of the punch 3 and the back surface of the die are checked. The mold exchanging cylinders 37 and 39 return in the state where they are kept, and the molds 3 and 7 are near the chain magazines 5 and 9.

Next, the molds 3 of the chain magazines 5 and 9 are used.
And die clamping mechanism 4 not holding 7
5, 45A push / pull cylinder 2 for pushing / pulling chains 11, 13 by rotation of chain magazines 5, 9
Move to the position of 7,29.

At this time, the push / pull cylinders 27, 29
, Each clamp mechanism 45, 45A grips the molds 3, 7 attached to the mold changing cylinders 37, 39, and punches and dies gripping portions 59, 59 of the mold changing cylinders 37, 39. When the mold 63 is opened, the dies 3 and 7 are transferred to the clamp mechanisms 45 and 45A, and the push / pull cylinders 27 and 29 return.

Next, in the chain magazines 5, 9, the dies 3, 7 necessary for the next processing come to the positions of the push / pull cylinders 27, 29 for pushing / pulling the chains 11, 13, and this push / pull The cylinders 27 and 29 move to the positions of the mold exchanging cylinders 37 and 39, and the gripping portions 59 and 63 of the mold exchanging cylinders 37 and 39 grip the head of the punch 3 and the back surface of the die 7 (chucking). In this state, the mold exchanging cylinders 37 and 39 are extended, so that the molds 3 and 7 are punched and die-blocked 31 and 33.
To be replaced.

Accordingly, the chain magazines 5 and 9 circulate, and the two molds 3 and 2 are placed in the mold holding blocks 31 and 33 respectively.
7 are held, one of the holding positions is a ram position of the punch press machine, and the other is movable so as to be located on the locus of the chain magazines 5, 9, so that the mold holding blocks 31, Since the molds 3 and 7 in the mold 33 can be replaced, the operation during stoppage is performed by the mold holding blocks 31 and 33.
Only one-way movement is required. It should be noted that the present invention is not limited to the above embodiment, but can be implemented in other aspects by making appropriate design changes.

[0025]

As is apparent from the above description, the punch press according to the present invention is provided with a punch magazine circulating by a chain system on an upper portion of a press body, and a die magazine circulating by a chain system is provided by the press. A punch block that is provided at the lower portion of the main body and that can hold two punches and is movable in one direction is provided near the punch center. A die block that holds two dies and is movable in the other direction is provided near the punch center. An automatic index mechanism is provided for each of the punch block and the die block, and a cylinder that allows the punch of the punch magazine and the punch of the punch block to be exchangeable is provided at an upper portion of the press body, and the die and the die of the die magazine are provided. By providing another cylinder at the lower part of the press body, which can be exchanged with the die of the die block. Te are problems solved effectively in the prior art, it reduces the time for exchanging the mold, and the drag flaws of the work is reduced by reducing the range of the stationary table.

[Brief description of the drawings]

FIG. 1 is a front view of a punch press according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged view of a main part of the chain type block of FIG. 1;

FIG. 4 is an enlarged view of another main part of the chain type block of FIG. 1;

FIG. 5 is an explanatory diagram of a punch clamp mechanism for gripping the punch of FIG. 3;

FIG. 6 is a schematic explanatory view of an auto index mechanism.

FIG. 7 is an explanatory diagram showing a state in which a punch and a die are respectively mounted at processing positions.

FIG. 8 is an explanatory diagram of a function of a punch holding portion of a mold changing cylinder.

[Explanation of symbols]

 3 Punch 5 Punch Magazine 7 Die 9 Die Magazine 23, 25 Tension Cylinder 27, 29 Chain Push / Pull Cylinder 31 Punch Block 33 Die Block 35 Auto Index Mechanism 37, 39 Die Exchange Cylinder 45 Punch Clamp Mechanism 45A Die Clamp mechanism

Claims (1)

(57) [Claims] 1. A punch magazine provided at an upper portion of a press body and accommodating a plurality of punches and circulating by a chain method, and a die provided at a lower portion of the press body and accommodated by a plurality of dies and circulated by a chain method. And a punch block provided near the punch center and holding two punches and movable in one direction, and a die block provided near the punch center and holding two dies and movable in the other direction. An automatic index mechanism provided on each of the punch block and the die block, a cylinder provided on an upper portion of the press body and capable of exchanging a punch of the punch magazine and a punch of the punch block, and a cylinder of the press body. Another series is provided at a lower part and makes the die magazine die and the die block die interchangeable. And a punch press, wherein the punch and the die are automatically exchanged.