JP2000176573A - Clamp exchange device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a clamp exchange work and to improve safety by slidably arranging a bar screw to an arm rotatably mounted to a carriage base along a long hole and arranging a bolt having a thread hole to be screwed to the bar screw in a clamp housing. SOLUTION: A work is clamped to be positioned to a working position by a clamp 13 mounted to a carriage 12 of a plate working machine. The clamp 13 is fixed to the housing 30 fastened to the carriage 12 through a bolt 41 having a lever 40 and a fastening part 42 by a guide shaft 38. A screw bar 27 having a handle 25 is loosely fitted into a long hole 26 of an arm 22 ratatably mounted with a shaft 24 to a block 20 of the side part of a carriage base 11. When mounting/demounting the clamp 13, by turning the arm 22 around the shaft 24 and screwing the tip of the screw bar 27 to the screw hole 35 of a bolt 41 top part, the screw bar 27, while sliding along the long hole 26 and holding the clamp 13 with arm 22, is moved between a mounting position and a working table.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a clamp changing device,
In particular, the present invention relates to a clamp exchange device used for a plate processing machine such as a turret punch press and a laser processing machine.

[0002]

2. Description of the Related Art Conventionally, in a plate material processing machine, for example, a turret punch press, a clamp 72 is mounted via a carriage base 70 (FIG. 6) and a carriage 71.

[0003] A carriage 71 is provided with a carriage base 70.
The carriage base 70 is mounted on a support bracket 74 (FIG. 6 (B)), and the support bracket 74 is Y-moved on a guide rail 75. It is movable in the axial direction.

[0004] With this configuration, the clamp 72 is connected to the work W
And is positioned at a predetermined position on the XY plane.

When the clamp 72 is to be detached, the clamp 72 is slid on the carriage 71 (FIG. 6C), and is pulled out from the end of the carriage 71.

In mounting the clamp 72,
The clamp 72 is inserted from the end of the carriage 71 and is slid (FIG. 6C).

That is, conventionally, the clamp 72 is replaced by manually holding and holding the clamp 72 and performing the operation of pulling in and out of the carriage 12.

[0008]

[Problems to be solved by the invention]

However, the prior art (FIG. 6) has the following problems.

(1) The work of replacing the clamp 72 is troublesome and time-consuming. As described above, conventionally, the clamp 13 is replaced while the clamp 72 is held manually.

However, this clamp 72 usually has
Its weight is about 15 to 20 kg, which is extremely heavy.

Therefore, it is troublesome and time-consuming to replace the heavy clamp 72 by holding it by hand, and the working efficiency is low.

(2) The work of replacing the clamp 72 involves danger.

As described above, the clamp 72 is extremely heavy, and the table 73 is disposed below the clamp 72 (FIG. 6B).

Therefore, when the clamp 72 is removed from the carriage 71 or inserted into the carriage 71, the clamp 72 may be dropped if the holding force of the clamp 72 is weak.

As a result, the hand is pinched between the clamp 72 and the table 73 (FIG. 6B) or the clamp 7 is placed on the foot.
It is extremely dangerous because accidents such as dropping 2 occur.

SUMMARY OF THE INVENTION It is an object of the present invention to facilitate the work of replacing a clamp and to prevent accidents during the work of replacing a clamp to improve safety.

[0018]

According to the present invention, to solve the above-mentioned problems, as shown in FIGS.
In a plate material processing machine for gripping a work W with a clamp 13 attached via a carriage base 11 and a carriage 12, positioning the work W at a predetermined position and performing processing, (B) the carriage base Arm 2 to 11
2 is rotatably mounted, and the arm 22 is
The clamp replacement device is characterized in that the clamp 13 is exchanged with the carriage 12 by replacing the clamp 13 by screwing the clamp 13 and holding the clamp 13 with the arm 22.

Therefore, according to the configuration of the present invention, when replacing the clamp 13, the clamp 1 is used regardless of whether the clamp 13 is detached (FIG. 3) or attached (FIG. 4).
3 is held by the arm 22 to perform an insertion / removal operation with respect to the carriage 12 (step 10 in FIG. 3A).
4, No. 4 in FIG. 3 (B), Step 20 in FIG. 4 (A)
3, the third diagram in FIG. 4 (B)).

Therefore, the work of replacing the clamp is facilitated, and an accident during the work of replacing the clamp is prevented, thereby improving the safety.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 is an overall view showing an embodiment of the present invention.

The clamp exchanging device shown in FIG. 1 is applied to, for example, a turret punch press (FIG. 5), in which a clamp 13 is mounted via a carriage base 11 and a carriage 12.

The clamp 13 has a body 31 as is well known, and a base 34 is provided at the bottom of the body 31.
Is fixed, and the work W is gripped in cooperation with the pivotable clamper 33.

The main body 31 is fixed to the housing 30 by a guide shaft 38. The housing 30 has a tightening portion 42, and a bolt 41 provided with a lever 40 passes through the Screwed into 30.

With this configuration, when the clamp 13 is disengaged (FIG. 3), if the bolt 40 is loosened by operating the lever 40, the housing 30 is released from the carriage 12 and the clamp 13 can be moved to the end of the carriage 12. It is possible (step 101 in FIG. 3A, the top diagram in FIG. 3B).

When the clamp 13 is mounted (FIG. 4), the housing 30 is positioned at a predetermined position on the carriage 12 by operating the lever 40 and tightening the bolt 41, and the clamp 13 can be fixed (FIG. 4). (Step 205 in FIG. 4A, No. 5 in FIG. 4B).

Further, a screw hole 35 is formed at the top of the bolt 41 of the clamp 13 (FIG. 1), and an arm 2 to be described later is formed.
2 can be screwed in (step 103 in FIG. 3A, third diagram in FIG. 3B, step 202 in FIG. 4A, second diagram in FIG. 4B), As a result, the clamp 13 is held by the arm 22.

On the other hand, a block 20 is attached to the side of the carriage base 11 (FIG. 1).
A shaft 24 is fixed to the shaft 0, and the base end of the arm 22 is loosely fitted to the shaft 24.

As a result, the arm 22 becomes rotatable. For example, when the clamp 13 is detached (FIG. 3), the arm 22 is rotated inward (the second diagram in FIG. The clamp 13 is rotated outward (fourth diagram in FIG. 3B), and the clamp 13 is released on the work table 10C (fifth diagram in FIG. 3B).

A lock pin 23 (FIG. 1) is attached to the arm 22. When the arm 22 is not used, the lock pin 23 is inserted into the shaft 24.

As a result, the arm 22 is locked to the shaft 24, and the arm 22 can be fixed so as not to rotate.

An elongated hole 26 (FIG. 1) is formed in the arm 22. A screw rod 27 is inserted into the elongated hole 26, and a handle 25 is attached to the screw rod 27.

Thus, by rotating the handle 25, the screw rod 27 can be screwed into the screw hole 35 on the clamp 13 side (step 103 in FIG. 3A, the third diagram in FIG. 3B, Step 202 in FIG.
(B) second diagram).

By rotating the handle 25 in the reverse direction, the screw rod 27 can be removed from the screw hole 35 on the clamp 13 side (step 105 in FIG. 3A, FIG. 3).
5B, FIG. 4A, step 204, FIG.
(B) fourth figure).

Further, by having the handle 25, the screw rod 27 can be slid along the elongated hole 26 (FIG. 1).

Thus, after the arm 22 is rotated (the second diagram in FIG. 3B, the first diagram in FIG. 4B), the screw rod 27 is rotated.
By sliding the screw rod 2 along the elongated hole 26.
7 can be positioned above the screw hole 35 on the clamp 13 side.

When the arm 22 rotates while holding the clamp 13 (step 10 in FIG. 3A).
4, No. 4 in FIG. 3 (B), Step 20 in FIG. 4 (A)
3, the third diagram in FIG. 4 (B)), the screw rod 27 is a long hole 2
Slide along 6.

As a result, the rotational movement of the arm 22 about the axis 24 and the linear movement of the clamp 13 along the carriage 12 (fig. 4 in FIG. 3 (B) and third in FIG. 4 (B)) Is adjusted, and the operation of inserting and removing the clamp 13 with respect to the carriage 12 is performed smoothly.

Such a clamp exchanging device is applied, for example, to a turret punch press (FIG. 5), and a punch P and a die D are concentrically arranged on an upper turret 6 and a lower turret 7 of the illustrated turret punch press. ing.

Chains 4 and 5 are wound around the rotation shaft 8 of the upper turret 6 and the rotation shaft 9 of the lower turret 7, and the chains 4 and 5 are wound around the drive shaft 3.

A striker 2 for hitting the punch P is provided on the upper frame 1 immediately above the punch P in the punch center C.

With this configuration, if the drive shaft 3 is rotated by the motor M to circulate the chains 4 and 5, the upper turret 6
And the lower turret 7 are rotated synchronously, and a die including a predetermined punch P and a die D can be selected at the punch center C.

A Y-axis guide rail 17 is laid on the lower frame 21.

A support bracket 16 is slidably connected to the guide rail 17, and the carriage base 11 is fixed to the support bracket 16.

A block 20 of the present invention is mounted on the side of the carriage base 11 (FIGS. 5A and 5B), and an arm 22 is attached to the block 20. The screw rod 27 on the arm 22 side is screwed into the screw hole 35 on the clamp 13 side and screwed together.

The middle arm 2 for punching the work W
When not using the arm 2, as described above,
2 can be locked by the lock pin 23 so as not to rotate.

On the other hand, the carriage base 11 has Y
The ball screw 14 of the shaft motor My (FIG. 5A) is screwed.

The carriage 12 to which the clamp 13 is attached is slidably connected to the carriage base 11 via an X-axis guide rail (not shown).
The carriage 12 has an X-axis motor Mx (FIG. 5A).
Ball screw 15 is screwed.

Further, at the center of the turret punch press,
The table 10 is fixed, and the carriage base 11 is disposed across the fixed table 10.
Are attached to the carriage base 11.

With this configuration, when the X-axis motor Mx is rotated, the carriage 12 moves on the carriage base 11
When the Y-axis motor My is rotated while moving in the axial direction, the carriage base 11
It moves in the Y-axis direction together with B.

Hereinafter, the operation of the present invention having the above configuration will be described.
This will be described with reference to FIGS.

(1) Operation when the clamp 13 is detached (FIG. 3).

(1) -A Operation until the arm 22 is screwed into the clamp 13. In step 101 of FIG. 3A, the clamp 13 is moved to the end of the carriage 12, and in step 102, the arm 22 is rotated to
7 is positioned above the screw hole 35, and in step 103, the handle 25 is rotated, and the screw rod 27 is
Screw into 5.

That is, the lever 40 (the first diagram in FIG. 3B)
To loosen the bolt 41 (FIG. 1), the clamp 13 fixed at a predetermined position on the carriage 12 can be brought close to the end of the carriage 12 (FIG. 3B). ).

Therefore, by rotating the arm 22 inward in this state (second diagram in FIG. 3B), the screw rod 27 is rotated.
Is positioned above the screw hole 35 on the clamp 13 side which is brought to the end of the carriage 12.

Then, by turning the handle 25, the screw rod 27 is screwed into the screw hole 35 immediately below the screw rod 27 (third diagram in FIG. 3B).

Thus, the arm 22 is connected to the clamp 13
, And the clamp 13 is held by the arm 22.

(1) -B Operation until the clamp 13 is lowered onto the work table 10C (FIG. 5) outside the turret punch press.

In step 104 of FIG. 3A, the clamp 13 is slid and removed from the carriage 12, and in step 105, the handle 25 is rotated in the reverse direction to remove the screw rod 27 from the screw hole 35.
, The clamp 13 is lowered onto the work table 10C.

That is, in step 103, the handle 13 is rotated and the screw rod 27 is screwed into the screw hole 35, so that the clamp 13 screwed and held on the arm 22 (the second clamp in FIG. 3B). Carriage 12)
Located at the end of

Therefore, if the clamp 13 is slid to the right, for example (fourth diagram in FIG. 3B), the arm 2
2 also rotates outward, and at the same time, the screw rod 27 slides along the elongated hole 26, so that the clamp 13 can be pulled out of the carriage 12 while being held by the arm 22.

The clamp 13 extracted from the carriage 12 is held by the arm 22 while the work table 1
It is located above OC (FIG. 5) (fifth diagram in FIG. 3 (B)).

Therefore, if the handle 25 is rotated in the reverse direction to remove the screw rod 27 from the screw hole 35 (fig. 5 in FIG. 3B),
The clamp 13 is released from the arm 22 and can be lowered on the work table 10C.

(2) Operation when mounting the clamp 13 (FIG. 4).

(2) -A Operation until the arm 22 is screwed into the clamp 13. In step 201 of FIG. 4A, the arm 22 is rotated, and the screw rod 27 is inserted into the screw hole 35.
, And in step 202, the handle 25 is rotated, and the screw rod 27 is screwed into the screw hole 35.

That is, it is assumed that the clamp 13 to be mounted on the carriage 12 is placed, for example, on the work table 10C (FIG. 4B).

In this state, the arm 22 is rotated inward or outward, and the screw rod 27 is slid along the elongated hole 26, whereby the screw rod 27 is moved to the work table 10C.
It is positioned above the screw hole 35 of the clamp 13 placed above.

Then, by turning the handle 25, the screw rod 27 is screwed into the screw hole 35 immediately below the screw rod 27 (second diagram in FIG. 4B).

Thus, the arm 22 and the clamp 13 are screwed together, and the clamp 13 is held by the arm 22.

(2) -B Clamp 13 is attached to carriage 1
Operation until it is fixed at a predetermined position on 2.

In step 203 of FIG. 4A, the clamp 13 is inserted into the end of the carriage 12, and in step 204, the handle 25 is
Is removed from the screw hole 35, and in step 205, the clamp 13 is slid and fixed at a predetermined position.

That is, in the step 202, the handle 13 is rotated and the screw rod 27 is screwed into the screw hole 35, so that the clamp 13 screwed and held on the arm 22 (see FIG. 4B). Work table 1)
Located above 0C.

Accordingly, when the arm 22 is rotated inward (third view in FIG. 4B), the clamp 13 held by the arm 22 slides the threaded rod 27 along the elongated hole 26. Accordingly, it can be inserted into the end of the carriage 12.

In this state, if the handle 25 is rotated in the reverse direction to remove the screw rod 27 from the screw hole 35 (fourth diagram in FIG. 4B), the clamp 13 inserted into the end of the carriage 12 is Released from 22.

Accordingly, when the clamp 13 is slid to the left, for example (FIG. 4B, fifth diagram), and the lever 40 is operated to tighten the bolt 41 (FIG. 1), the clamp 13
Can be fixed at a predetermined position on the carriage 12.

(3) Processing operation.

In FIG. 4, after the clamp 13 is mounted on the carriage 12 by the clamp exchanging device according to the present invention, the arm 22 is not used when processing the work W, so that the arm 22 is rotated outward. And evacuate (Fig. 4
(Fifth diagram of (B)) Locked with the lock pin 23 and fixed.

In this state, the work W carried in (FIG. 5)
Is gripped by the clamp 13 and the X-axis motor Mx (FIG. 5)
(A)) and by driving the Y-axis motor My to move the carriage 12 in the X-axis direction and the carriage base 11 in the Y-axis direction, the work W is positioned at the punch center C, and the punch P Punching is performed in cooperation with the die D.

In the above embodiment of the present invention, the screw rod 27 is provided on the arm 22 side (FIG. 1) and the clamp 13 is provided.
Although the screw hole 35 is provided on the side, the present invention is not limited to this. It is also possible to provide the screw hole 35 on the arm 22 side and the screw rod 27 on the clamp 13 side, respectively. Of course, it produces an effect.

[0080]

As described above, according to the present invention, the clamp exchanging device is provided such that the arm is rotatably mounted on the carriage base, the arm is screwed into the clamp, and the clamp is held by the arm. And the clamp is replaced.

Therefore, according to the structure of the present invention, when the clamp is replaced, the clamp is held by the arm to perform the pulling-out operation with respect to the carriage regardless of whether the clamp is detached or mounted. Therefore, the replacement of the clamp is facilitated, and the technical effect of preventing an accident during the replacement of the clamp and improving the safety is achieved.

Further, according to the present invention, the clamp exchanging device has an extremely simple structure in which the arm is rotatably mounted on the carriage base and the arm is screwed to the clamp, and can be manufactured at low cost. There is also the effect that there is.

[0083]

[Brief description of the drawings]

FIG. 1 is an overall view showing an embodiment of the present invention.

FIG. 2 is a plan view and a side view of FIG.

FIG. 3 is an explanatory diagram of an operation at the time of releasing a clamp according to the present invention.

FIG. 4 is an explanatory diagram of an operation when mounting a clamp according to the present invention.

FIG. 5 is a diagram showing an application example of the present invention.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Carriage base 12 Carriage 13 Clamp 20 Block 22 Arm 23 Lock pin 24 Shaft 25 Handle 26 Elongated hole 27 Screw bar 30 Housing 31 Main body 33 Clamper 34 Base 35 Screw hole 40 Lever 41 Bolt 42 Tightening part

Claims (5)

[Claims] 1. A plate material processing machine for gripping a workpiece by a clamp attached via a carriage base and a carriage, positioning the workpiece at a predetermined position, and performing processing, wherein an arm is attached to the carriage base. Rotatably mounted,
A clamp exchanging device, wherein the arm is screwed into a clamp, and the clamp is exchanged by performing a pull-in / out operation with respect to a carriage by holding the clamp with the arm. 2. The screw rod or the screw hole is provided on the arm side, and the screw hole or the screw rod is provided on the clamp side.
The clamp exchange device as described. 3. The clamp exchanging device according to claim 1, wherein a screw rod is provided on the arm through a long hole, and a screw hole is provided on a top portion of a bolt for fixing the clamp to the carriage. 4. The screw rod on the arm side is slidable along an elongated hole, and by rotating a handle attached to the screw rod, the screw rod is screwed into the screw hole on the clamp side or the screw hole is screwed. 4. The clamp exchange device according to claim 3, which can be removed from the clamp. 5. The clamp changing device according to claim 1, wherein the arm is rotatably mounted on a block on a side of the carriage base via a shaft, and the arm is locked to the shaft by a lock pin.