JPH0639458A - Punch press machine - Google Patents

Abstract

PURPOSE:To shorten the changing time and to reduce the pull broken flaw of a work by attaching a die self-changing device and changing the die freely. CONSTITUTION:A punch magazine 5 circulating with a chain system is provided on an upper part of a press body 1, and a die magazine 9 circulating with the chain system is provided on a lower part of the press body. A punch block 31 holding two punches and being freely movable in one direction is provided near a punch center, a die block 33 holding two dies and being freely movable in one direction is provided near the punch center, and automatic index mechanisms are respectively provided at each punch block and die block. A cylinder 37 freely changing the punch of the punch magazine and the punch of the punch block is provided on the upper part of the press body, and the other cylinder 39 freely changing the die of the die magazine and the die of the die block is provided on the lower part of the press body. Therefore, the pull broken flaw of the work is reduced by reducing the range of the fixed table.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch press machine, in which a die automatic changing device is mounted so that the die can be exchanged.

[0002]

2. Description of the Related Art Conventionally, a large number of punch press machines are equipped with an automatic mold changing device (ATC) for automatically changing molds, which are commercially available. For example, there are various types of automatic mold changer (ATC) such as a trump type, an Anritsu type, a multi-exchange system capable of exchanging a plurality of molds at a time, or a Behens CB440 type.

[0003]

By the way, the automatic mold changing device has a problem that it takes too much time for changing the mold. For example, the replacement time is about 10 to 12 seconds in the case of the trumpu type, and about 30 seconds in the case of the Anritsu type. This Trumpf type performs the following die replacement process when the machine is stopped (when the processing time is stopped). (1) Work avoidance (2) Strike tool extraction (3) Strike tool insertion (4) It takes a long time to replace the mold, because the four steps of moving the work are performed.

Further, in the case of the multi-exchange system, there is a problem that even unnecessary dies are exchanged.

In the CB440 type manufactured by Behens, since an actuator for automatic die change (a device for changing dies by a striker and a chain magazine) is mounted on the turret, the space for the fixed table becomes large and the work piece becomes large. There was a problem of scratches on the skin.

In order to solve the above problems, an object of the present invention is to provide a punch press machine in which the time for exchanging the mold is shortened and the range of the fixed table is reduced to reduce the scratches on the work. Especially.

[0007]

In order to achieve the above object, the present invention provides a punch magazine circulated 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 that circulates, a punch block near the punch center that holds two punches and can move in one direction, and a die block near the punch center that holds two dies and can move in the other direction A die block, an automatic indexing mechanism provided in each of the punch block and the die block, a cylinder provided in the upper portion of the press main body, the punch of the punch magazine and the punch of the punch block are exchangeable, The die of the die magazine and the die of the die block, which are provided in the lower part of the press body, are interchangeable. And a another cylinder, a punch press machine, characterized by automatically changing the punches and dies.

[0008]

By adopting the punch press machine of the present invention, a punching magazine that circulates in a chain system is provided in the upper part of the press body, and a die magazine that circulates in a chain system is provided in the lower part of the press body. A punch block that holds the punch and is movable in one direction is provided near the punch center, and a die block that holds two dies and is movable in the other direction is provided near the punch center. An automatic indexing mechanism is provided for the punch block. And a die block, and a cylinder that allows the punch of the punch magazine and the punch of the punch block to be exchanged is provided above the press body, and the die of the die magazine and the die of the die block can be exchanged. By installing another cylinder at the bottom of the press body, It is shortened, and drag flaws of the work is reduced by reducing the range of the stationary table.

[0009]

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 of 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 and circulate in a chain system on the upper part of the press body 1. In addition, a die chain magazine 9 for circulating in a chain system is provided below the press body 1 in which a plurality of dies 7 are clamped and housed by a die clamp mechanism 45A attached to the chain 13.

The punch and die chain magazines 5 and 9 are provided with sprocket wheels 15 and 17 for holding the chains 11 and 13, and the chains 11 and 13 can be extended and retracted via idlers 19 and 21. There are provided tensioning cylinders 23 and 25 for adjusting the pressure and pushing and pulling cylinders 27 and 29 for pushing and pulling the chains 11 and 13 to move to the die transfer position.

Two punches 3 and two dies 7 are provided on the punch side and on the die side near the center of the punch.
The punch block 31 and the die block 33, on which the die holders 53 and 55 to which is attached are mounted, are provided.

The punch block 31 and the die block 33 include a drive motor 47, a pinion gear 49, and a rack 5 for moving the punch block 31 in the X-axis direction and the die block 33 in the Y-axis direction only in one direction.
1 is provided to move the punch 3 and the die 7 to the mold replacement position and the position directly below the ram 57, and as shown in FIG. 6, the worm shaft 41 and the worm gears provided on the mold holders 53 and 55. Two auto indexing mechanisms 35 each including 43 are mounted.

The mold replacement cylinders 37 and 39 are
The punch 3 and the die 7 which are provided on the upper and lower portions of the press body 1 and are clamped by the clamp mechanism 45 of the punch chain magazine 5 and the die chain magazine 9, respectively.
And the punch 3 and the die 7 inserted into the die holders 53 and 55 of the punch block 31 and the die block 33 are replaced, and the chains 11 and 13 of the punch chain magazine 5 and the die chain magazine 9 are pushed. The mold exchange is performed in cooperation with the push-pull cylinders 27 and 29 for pulling.

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

As shown in FIGS. 1 and 8, a punch grip 59 having four claws 61 is provided at the tip of the mold exchanging cylinder 37 to clamp the head of the punch 3. In addition, 61A shows the state of the claw portion where the clamp of the punch 3 is released. A die gripping portion 63 having a similar function is also provided at the tip of the die replacement cylinder 39 to clamp the back surface of the die 7.

A series of operations for machining and die replacement of the punch press machine having the above-described structure will be described.

Punching is carried out with punches 3 and dies 7 attached to each chain magazine 5 and 9, and two punches 3 and two dies 7 required for machining are attached to each block 31 and 33. To be done.

First, working is performed by using the molds 3 and 7 located at the center of the punch. When determining the angles of the molds 3 and 7 during processing, as shown in FIG.
The rotation of the worm shaft 41 causes the worm gear 43 to rotate.
After rotating the to determine the die angle, punching is started. When the processing with the molds 3 and 7 is completed, the blocks 31 and 33 move in one direction of the X axis and the Y axis, respectively.
The dies 3 and 7 to be used next come to the center position of the punch just below the ram 57, and the next processing is started.

In this state, the dies 3 and 7 used in the previous processing and the dies 3 and 7 to be used next are exchanged. Mold replacement cylinders 37 and 39 are block 3
In order to take out the molds 3 and 7 in the molds 1 and 33, the molds 3 and 7 are extended after reaching the mold positions in the blocks 31 and 33 and the heads of the punch 3 and the back surface of the die are checked. The mold replacement cylinders 37 and 39 are returned in the state as they are, and the molds 3 and 7 are near the chain magazines 5 and 9.

Next, the die 3 of the chain magazine 5, 9
Punch and die clamp mechanism 4 not holding 7
5, 45A is a push-pull cylinder 2 for pushing and pulling the chains 11, 13 by the rotation of the chain magazines 5, 9.
Move to position 7,29.

At this time, the push-pull cylinders 27, 29
By the pushing operation, the clamp mechanisms 45 and 45A grip the molds 3 and 7 attached to the mold replacement cylinders 37 and 39, and the punches and the die gripping portions 59 of the mold replacement cylinders 37 and 39, When the mold 63 is opened, the molds 3 and 7 are transferred to the clamp mechanisms 45 and 45A, and the push-pull cylinders 27 and 29 are returned.

Next, in the chain magazines 5 and 9, the dies 3 and 7 required for the next processing come to the positions of the push and pull cylinders 27 and 29 for pushing and pulling the chains 11 and 13, and the push and pull cylinders are pushed. The cylinders 27 and 29 move to the positions of the die replacement cylinders 37 and 39, and the grip portions 59 and 63 of the die replacement cylinders 37 and 39 are gripped (chucking) on the head of the punch 3 and the back surface of the die 7. In this state, the die replacement cylinders 37 and 39 are extended, so that the dies 3 and 7 are punched and die blocks 31 and 33.
It is inserted into and exchanged.

Therefore, the chain magazines 5 and 9 circulate, and the mold holding blocks 31 and 33 have two molds 3 each.
7 are held, one holding position is a ram position of the punch press machine, and the other is movable so as to be positioned on the loci of the chain magazines 5 and 9, and the mold holding block 31, Since the molds 3 and 7 in 33 can be exchanged, the operation during the stop is 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-described embodiments, but can be implemented in other aspects by making appropriate design changes.

[0025]

As is apparent from the above description, in the punch press of the present invention, the punch magazine circulating by the chain system is provided on the upper part of the press main body, and the die magazine circulating by the chain system is pressed. A punch block which is provided on the lower part of the main body and which holds two punches and is movable in one direction is provided near the punch center, and a die block which holds two punches and is movable in the other direction is provided near the punch center. An automatic indexing mechanism is provided in 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 exchanged is provided above the press main body, and the die of the die magazine and the die By providing another cylinder at the bottom of the press body that allows the die of the die block to be exchanged, 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 drawings]

FIG. 1 is a front view of a punch press machine 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 block of FIG.

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

5 is an explanatory view of a punch clamp mechanism that holds the punch shown in FIG. 3;

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

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

FIG. 8 is a functional explanatory diagram of a punch gripping portion of a die replacement 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 Mold replacement cylinder 45 Punch clamp mechanism 45A Die Clamp mechanism

Claims (1)

[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 accommodating a plurality of dies and circulating by a chain method. Magazine, 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 being movable in the other direction. An automatic indexing mechanism provided on each of the punch block and the die block, a cylinder provided on the upper part of the press body for exchanging the punch of the punch magazine and the punch of the punch block, and the press body of the press body. Another series provided at the bottom to allow the die of the die magazine and the die of the die block to be exchangeable. And a punch press machine for automatically exchanging the punch and the die.