JP2500257B2 - Die attachment device for processing 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 die attaching device for a relatively simple processing machine.

[0002]

2. Description of the Related Art For example, in order to perform punching processing on a metal part such as a copper bar or an aluminum plate for power distribution, the metal part is placed on a die attached to the frame side of the main body, A processing machine having a structure for lowering a punch is used. In such a processing machine, as shown in FIG. 3, the die insertion portion 2 formed in the frame 1 of the processing machine main body is used.
It was usual that the die 3 was inserted so as to be dropped in and then fixed by the lock pin 4.

However, in such a conventional processing machine, since the upper surface of the die 3 set in the die insertion portion 2 is only about 2 mm out of the frame 1, when the die 3 is replaced, the die 3 is replaced. It's not easy to take out. For this reason, as shown in FIG. 4, the entire processing machine is tilted while the lock pin 4 is pulled, and the die 3 is pushed up from the bottom surface with a finger. However, this is dangerous because the weight of the processing machine is several tens of kilograms,
There was also a risk of overturning the processing machine.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art and to provide a die mounting apparatus for a processing machine which enables easy and safe die replacement. .

[0005]

A die mounting apparatus for a processing machine according to the present invention, which has been made to solve the above-mentioned problems, forms a die insertion portion and a hollow portion continuing therebelow in a frame of a processing machine body. At the same time, the hollow portion is provided with a spring that constantly repels the lower surface of the die inserted into the die insertion portion and a lock device that fixes the die.

[0006]

According to the die mounting apparatus of the processing machine of the present invention, since the spring which constantly repels the lower surface of the die upward is provided in the hollow portion below the die insertion portion, the lock device is released at the same time. Due to the resilience, the die rises above the frame and can be taken out easily. When setting a new die, the die may be inserted into the die insertion portion against the spring and fixed by a locking device.

[0007]

The present invention will be described below in more detail with reference to the illustrated embodiments. FIG. 1 is a perspective view showing the entire processing machine of the embodiment, and FIG. 2 is a sectional view of the main part thereof. In these figures, 1 is a frame of the processing machine main body, 2 is a die insertion portion formed in the frame 1, and 3 is a die. Die 3 is shown in Figure 2.
As shown in FIG. 3, it has a disc shape, and its peripheral edge portion is supported by the step portion 5 of the die insertion portion 2.

A hollow portion 6 is formed below the die insertion portion 2, and a spring 7 is provided inside the hollow portion 6. The spring 7 of this embodiment is a compression coil spring, the upper end of which is in contact with the lower surface of the die 3 and the lower end of which is in contact with the stepped portion 8 formed in the lower portion of the hollow portion 6. Therefore, this spring 7
Always urges the lower surface of the die 3 inserted in the die insertion portion 2 upward.

A lock groove 9 is formed on the peripheral surface of the die 3, and the frame 1 is provided with a lock pin 4 for fixing the die 3 by engaging the lock groove 9 at its front end.
Therefore, when the lock pin 4 is engaged with the lock groove 9 of the die 3, the die 3 is kept inserted in the die insertion portion 2 regardless of the elastic force of the spring 7. The lock pin 4 is elastically urged toward the peripheral surface of the die 3 by the lock spring 10, but the engagement with the lock groove 9 can be released by pinching and pulling the head of the lock pin 4.

In FIG. 1, 11 is a recess for positioning the die 3, 12 and 13 are guide members for a metal member to be punched, and 14 is a punch driving mechanism.

In the die mounting apparatus of the processing machine constructed as above, when it is desired to replace the die 3, the lock pin 4 is simply pulled to release the engagement with the lock groove 9. It is lifted above the frame 1 by the elastic force of 7. At this time, if the spring 7 is adjusted so as to be lifted up by about 10 mm from the frame 1, the die 3 can be easily taken out.

When a new die 3 is set, a downward force is applied from above the die 3, the die 3 is inserted into the die insertion portion 2 against the elastic force of the spring 7, and the lock pin 4 is inserted into the die 3. Engage with the lock groove 9 of. As a result, the die 3 is stably attached inside the die insertion portion 2,
The punch driving mechanism 14 can be operated to perform punching.

[0013]

As described above, according to the present invention, the die can be lifted from the frame by utilizing the elastic force of the spring simply by operating the lock device, so that the die can be easily replaced. Can be done. For this reason,
It is not necessary to tilt the processing machine and push up the die with a fingertip as in the conventional case, and the replacement work can be performed safely.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire processing machine of an embodiment.

FIG. 2 is a sectional view of a main part of the embodiment.

FIG. 3 is a sectional view of a main part of a conventional example.

FIG. 4 is a partial cross-sectional view illustrating a method of taking out a die in a conventional example.

[Explanation of symbols]

 1 Frame of the machine body 2 Die insertion part 3 Die 4 Lock pin 5 Step part 6 Hollow part 7 Spring 8 Step part 9 Lock groove 10 Lock spring 11 Recessed part 12 Guide member 13 Guide member 14 Punch drive mechanism

Claims (1)

(57) [Claims] 1. A spring and a die for forming a die insertion portion and a hollow portion continuing below the die insertion portion on a frame of a processing machine main body, and for springing the lower surface of the die inserted in the die insertion portion in the hollow portion to always upward. A die attaching device for a processing machine, which is provided with a lock device for fixing the die.