JPS5929834Y2 - Press with blanking slide - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a press with a blanking slide, and more specifically to a drive mechanism for the blanking slide.

Conventionally, in this type of press, a blanking slide is provided at -IU of the press body, and the blanking slide and the press drive unit are linked to move the blanking slide up and down simultaneously in conjunction with the vertical movement of the slide of the press body. The blanking slide is configured to move and punch out the material,
A press is known in which the punched blank is transported into the press body.

In addition, in this type of press, in order to improve the yield of the material, the punching die is moved in a zigzag manner relative to the material, and the first
As shown in the figure, a method has been proposed in which a blank b is obtained by punching a material a in a zigzag pattern at each location.

However, with this structure, the punching die is moved in a zigzag pattern, which makes the structure complicated and has problems such as troublesome control.

Therefore, a pair of punching dies are arranged in advance in a zigzag shape, or a punching section is provided in a zigzag shape, and the blank is punched out of the material in a zigzag shape without moving the punching die in a zigzag shape. It is conceivable to do this, but if you do this, two blanks will be punched out each time the slide strokes, so there will be an extra blank and it will be troublesome to carry it into the press body. There is.

The present invention has been made in view of the above circumstances, and its purpose is to provide a press with a blanking slide configured such that the blanking slide performs one punching operation while the slide strokes multiple times.

Embodiments of the present invention will be described below with reference to Figure 2 and subsequent figures.

The press body 1 connects the vent 2 and the crown 3 to the aflite 4.
It has a structure in which the slide 5 and the bolster 6 are integrally connected to each other and are moved up and down, and the slide 5 is connected to the drive shaft 7 via a link mechanism so that when the drive shaft 7 rotates, the slide 5 moves up and down. It is composed of:

A transfer bar 8 is operated by a drive source 9.

A blanking slide 10 is provided on one side of the press body 1 so as to be movable up and down, and is opposed to a bolster 11 provided on the lower part of one side of the press body 1, and is connected to the drive shaft 7 via a link mechanism. and moves up and down simultaneously with the slide 5.

Reference numeral 12 denotes a coil material, which is successively drawn out and supplied by an appropriate means between an upper mold 13 provided on the blanking slide 10 and a lower mold 14 provided with a bolster 11.

The upper die 13 and the lower die 14 are constructed so that two blanks 12' can be punched out of the coil material 12 in a zigzag pattern at once, as shown in FIG.

The blanking slide 10 is installed as follows.

That is, the blanking slide 10 is fitted so as to be vertically movable along a guide member 15 fixed to the applied member 4, and is suspended by a pair of balancers 16 and always urged upward.

17 is an eccentric rond fitted onto the eccentric portion 7a of the drive shaft 7;
A connection screw 1 is attached to the lower end of the eccentric iron 17.
8 is screwed together.

The lower end spherical portion 19 of the connection screw 18 faces into the recessed portion 20 of the blanking slide 10 and is prevented from moving upward by a presser piece 21.

A piston 22 is fitted into the recess 20 so as to be slidable up and down, forming a hydraulic chamber 23 between its lower end surface 22a and the bottom wall 20a of the recess 20. The spherical recess 24 that fits tightly into the spherical portion 19 is cut out.

The hydraulic chamber 23 can be controlled to communicate with a hydraulic power source 26 and a drain 27 via a switching valve 25.

That is, the switching valve 25 is an electromagnetic switching valve having a first position (2) that communicates the hydraulic power source 26 with the hydraulic chamber 23, and a second position (2) that communicates the drain 27 and the hydraulic chamber 23.

28 is a stopper that restricts the upward stroke of the piston 22.

Next, the operation will be explained.

When the drive shaft 7 is rotationally driven with the switching valve 25 in the first position (3), the thread guide 5 is stroked up and down, and the eccentric iron 17 is also moved up and down.

On the other hand, the hydraulic pressure in the hydraulic source 26 is supplied into the hydraulic chamber 23, and the blanking slide 10 is moved downward relative to the piston 22, so that the lower end surface 22 of the piston 22
A vertical gap S is created between the bottom wall 20a of the concave portion 20 and the eccentric iron 17 and the blanking slide 10 are connected to the connection screw 18 and the spherical portion 19.
, the spherical recess 24 , the piston 22 , and the hydraulic pressure in the hydraulic chamber 23 are integrally connected to each other.

That is, the blanking slide 10 is moved downward by a distance S.

Therefore, when the eccentric iron 17 moves downward, the blanking slide 10 moves downward via the hydraulic pressure in the hydraulic chamber 23, and the upper die 13 and the lower die 14 punch two blanks 12' from the material (coil material) 12. It can be removed.

When the eccentric rod 17 moves upward, the blanking slide 10 moves upward via the spherical portion 19 and the holding piece 21.

Next, when the switching valve 25 is set to the second position (3) and the hydraulic pressure in the hydraulic chamber 23 is discharged to the drain 27, the blanking slide 10 is moved upward by the balancer 16, and the lower end surface 22a of the piston 22 and the bottom wall of the concave portion 20 are moved. 20a and stops.

That is, it moves upward by a distance S.

When the drive shaft 7 is rotationally driven in this state, the slide 5 strokes up and down, the eccentric iron 17 moves up and down, and the blanking slide 10 also moves up and down.

However, since the blanking slide 10 is moved upward by a distance S, even if the blanking slide 10 moves up and down, the blank 12 will not be punched out by the upper die 13 and the lower die 14.

As described above, if the hydraulic pressure in the hydraulic chamber 23 is drained, the blanking slide 10 will not punch out the material 12 without making an effective stroke, and if the hydraulic pressure is supplied to the hydraulic chamber 23, the blanking slide 10 will not punch out the material 12. 10 can punch out a blank from the material 12 with an effective stroke.

Therefore, by switching the switching valve 25, the blanking slide 10 can be made only one effective stroke during the two strokes of the slide 50 to punch out a blank, and the upper mold 13 and the lower mold 14 can be punched in advance. 2
Since the punching parts are formed in a zigzag shape, it is possible to punch out two blanks from the material 12 in a zigzag shape without moving the punching dies 13 and 14 in a zigzag shape, and it is possible to punch out two blanks in a zigzag shape, and the slide number is 502 times. Since two blanks 12 are punched out with a stroke of , the blanks can be carried into the press body 1 one by one without accumulating.

Incidentally, the structure may be constructed as shown in FIG. 5 without providing the balancer 16.

In other words, the first two cylinders are located above and below the piston 22. Second hydraulic chamber 23
□ , 232 is formed, and the hydraulic pressure of the hydraulic source 26 is controlled by the switching valve 25.
Either hydraulic chamber 23. ．． It is configured to supply at an angle of 23°.

With this configuration, when hydraulic pressure is supplied into the first chamber 23, the blanking slide 10 moves downward relative to the piston 22, so that the blank can be punched.
If hydraulic pressure is supplied to the second chamber 23°, the blanking slide 10 moves upward relative to the piston 22, so that the blank cannot be punched out.

That is, eccentric iron 17, connection screw 1
8. Construct a blanking slide drive mechanism that converts the rotational motion of the drive shaft 70 into reciprocating motion using the piston 22, etc., and the blanking slide 10 is movably provided in the blanking slide drive mechanism, and a hydraulic chamber is provided between the two. form,
The blanking slide 10 may be moved by supplying and discharging pressure oil to this hydraulic chamber.

Note that the blanking slide 10 may be made to make one effective stroke while the slide 5 makes a plurality of strokes.

That is, it is sufficient that the blanking slide 10 makes one effective stroke while the slide 5 makes a stroke corresponding to the number of blanks punched at one time by the upper die 13 and the lower die 14.

Since the present invention is configured as described above, by supplying and discharging pressure oil to the hydraulic chamber and moving the blanking slide 10 in one direction with respect to the blanking slide drive mechanism, the blanking slide 10 can move over an effective stroke. The blanking slide 10 is effective if the blanking slide 10 is moved in the other direction with respect to the blanking drive mechanism by discharging and supplying pressure oil to the hydraulic chamber. Since the stroke cannot be moved in one direction, there is no need to punch out the blank.

Therefore, the blank can be punched by moving the blanking slide 10 by only one effective stroke while the slide 5 strokes a plurality of times.

[Brief explanation of the drawing]

Fig. 1 is an explanatory drawing of a blank punched out, Fig. 2 is an overall front view showing an embodiment of the present invention, Fig. 3 is a side view, Fig. 4 is a partially cutaway explanatory drawing of main parts, and Fig. 5 is an explanatory drawing of a blank. An explanatory diagram of another embodiment, FIG. 6 is an explanatory diagram of blank punching. 1 is the press body, 5 is the slide, and 10 is the blanking slide.

Claims (1)

[Scope of utility model registration request] A press with a blanking slide in which a blanking slide 10 is provided on a press body 1 equipped with a slide 5 is provided with a blanking slide drive mechanism that converts the rotational motion of a drive shaft 70 that drives the slide 5 into reciprocating motion, and A blanking slide 10 is provided in the ranking slide drive mechanism so as to be movable along the direction of movement of the blanking slide 10, and
A blanking slide characterized in that a hydraulic chamber is configured between the blanking slide 10 and the blanking slide drive mechanism, which can move the planking slide 10 relative to the blanking slide drive mechanism by supplying and discharging pressure oil. Attached press.