JPS6130748Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a cross-pressing device that performs pressing in the vertical and horizontal directions simultaneously.

Conventionally, when pressing a workpiece in two directions, vertical and horizontal, at the same time, as shown in Fig. The punch 3 and the sectional die 5 fixed to the upper mold holder 4 are used to perform horizontal drilling, and the horizontal drilling is performed by the piercing punch 7 fixed to the tip of a cam slide 6 which is mounted on the lower mold holder 2 so as to be movable laterally. The cam slide 6 moves forward by bringing the inclined surface 8a of the cam 8 fixed to the lower surface of the upper die holder 4 into contact with the inclined surface 6a formed at the rear of the cam slide 6. When descending, that is, during restriking,
The cam slide 6 was advanced against the spring force of the return spring 9, and the piercing punch 7 was used to punch holes. 10 is a pad for fixing the workpiece. Therefore, according to this method, vertical restriking and horizontal drilling are performed at the same time, so the sectional die 5
At the intersection of the piercing punch 7 and the piercing punch 7, as shown in FIG.
A notch 5a must be provided in the notch 5a, and therefore, there is a problem that restriking of the notch 5a cannot be performed. Therefore, it cannot be used for machining the workpiece 1 that requires precision. First, in this case, there is the inconvenience of having to perform the restriking and drilling processes separately, and the cam slide 6 must be operated after operating the upper die holder 4. However, there were problems such as the need for equipment for this purpose and the complicated structure.

Therefore, the present invention was developed in view of the above-mentioned conventional problems, and even in the case of press processing where vertical processing and horizontal processing intersect,
Pressing can be performed simultaneously in one step, and vertical pressing, for example restriking, can be performed on the entire surface, thereby improving pressing precision.

For this purpose, in the present invention, the cross press processing apparatus has a lower mold holder and an upper mold holder, and a cam having an inclined surface on the upper part is fixed on the lower mold holder.
The punch is supported vertically movably by a cushion material, the cushion material has a spring force capable of resisting the pressurizing force that presses the workpiece in the vertical direction, and the punch has a side portion of the punch. A cam slide is attached to the cam slide so as to be movable in the lateral direction, and a substantially horizontal upper sliding surface is formed at the top of the cam slide.
Further, the lower surface of the upper mold holder is provided with a contact surface that contacts the upper sliding surface of the cam slide when the upper mold holder is lowered, pushes down the cam slide, and allows the cam slide to move in the lateral direction. A cam slide presser and a sectional die for vertically pressing a workpiece placed on the punch are fixed, and a workpiece to be vertically pressed is fixed to the punch side of the cam slide. A machining tool for machining the vertical portion of the cam is attached, and an inclined surface is formed on the other side to be guided laterally by sliding on the inclined surface of the cam as the cam slide moves up and down,
Furthermore, the cam slide is biased away from the punch by a return spring;
The processing tool is formed to be able to be inserted into a through hole formed in the sectional die, and the cam slide and the inclined surface of the cam are such that when the upper die holder is lowered, the cam slide presser starts to come into contact with the cam slide. After that, the processing tool is sunk into the through hole,
Further, the intended purpose is achieved by forming a structure in which the machining tool protrudes from the through hole when the punch comes into contact with the lower die holder.

The present invention will be explained below with reference to the embodiments shown in FIGS. 3 to 5.

A is a cross-pressing device that presses a workpiece B from two directions, vertical and horizontal, and is composed of a lower die holder a and an upper die holder b, and a punch is mounted on the lower die holder a. 11 is mounted so as to be movable in the vertical direction, and includes a cushion pin 12 and a cushion spring 13 which are cushion materials.
is urged upward by the spring force of. and,
At a position where vertical pressing of the workpiece B is substantially completed, a gap l is created between the workpiece B and the lower die holder a, as shown in FIG. The biasing force has enough spring force to withstand the pressing force required to press the workpiece B in the vertical direction and to secure the gap l.

In the embodiment, the punch 11 is urged upward by both the cushion pin 12 and the cushion spring 13, but the punch 11 is forced upward by both the cushion pin 12 and the cushion spring 13.
Only one of them may be used as long as it has enough spring force to ensure the following.

A slide rod 14 is attached to the side of the punch 11.
One end is fixed, and a cam slide 15 is movably attached to the slide rod 14, and is biased outward (to the left in FIG. 3) by a return spring 16 interposed in the slide rod 14. ing.

A piercing punch 17 serving as a lateral processing tool is protruded from the punch 11 side of the cam slide 15, and an inclined surface 15a serving as a sliding surface is formed on the lower side of the cam slide 15. Furthermore, an upper sliding surface 1 is provided on the upper part of the cam slide 15.
5b is formed.

a lower mold holder a facing the cam slide 15;
A cam 18 is fixed on the top. The cam 18 is formed with an inclined surface 18a that joins with the inclined surface 15a of the cam slide 15.

In FIG. 4, reference numeral 19 is a gib plate that movably presses the cam slide 15.

On the lower surface of the upper mold holder b, there is a sectional die 20 that performs vertical machining (for example, restriking) on the workpiece B with the punch 11, and a cam slide that comes into contact with the upper sliding surface 15b of the cam slide 15. A presser foot 21 is fixed, and a pad 2 for pressing the workpiece B is provided in the recessed part of the lower surface of the upper mold holder inside the sectional die 20 (on the right side in FIG. 3).
2 is attached via a pad spring 23,
The earring punch 1 of the sexual die 20
A through hole 20a through which the piercing punch 17 passes is bored in a portion corresponding to 7.

The punch 11 is provided with an escape hole 11a for the piercing punch 17. The upper die holder b operates to be able to push down the punch 11 and the cam slide 15 with a pressing force that exceeds the spring force of the cushion pin 12 and the cushion spring 13. Now, in order to press the workpiece B using the cross-pressing apparatus A, the workpiece B is first set in a predetermined position of the punch 11.

At this set position, the gap between the punch 11 and the lower die holder a is set to be larger than the sum of the gap l and the press working stroke in the vertical direction.

Then, the upper mold holder b is lowered from this set position. As a result, the workpiece B is first held down by the pad 22, and then the workpiece B is sandwiched between the sectional die 20 and the punch 11 to perform vertical pressing. In this process, the cam slide presser 21 is attached to the upper sliding surface 15b of the cam slide 15.
It is designed so that it almost completes when it comes into contact with. At this time, the cushion pin 12 and the cushion spring 13 are bent or moved downward by the stroke or pressing force of the upper mold holder b while resisting the pressing force necessary to press the workpiece B, and are bent or moved downward by the stroke or pressing force of the upper die holder b. 11 and the lower mold holder a ensure a gap l. (See Fig. 5) Further, as the upper die holder b descends, the cushion pin 12 is pressed by the upper die holder b.
The punch 11 also begins to descend against the spring force of the cam 18, and the inclined surface 15a of the cam slide 15
return spring 1 by sliding on the inclined surface 18a of
The cam slide 15 also begins to move inward against the spring force of 6, and the piercing punch 17 also moves inward, and the punch 11 comes into contact with the upper surface of the lower mold holder a, and the upper mold holder b. When the operation stops,
The tip of the earring punch 17 is a sexual die 20
The workpiece B passes through the through hole 20a, and the horizontal pressing work (drilling work in this embodiment) of the workpiece B is completed. (Refer to Fig. 3) In the above embodiment, horizontal pressing was explained using a case of drilling with a piercing punch, but the present invention is not limited to this and can also be applied to horizontal (lateral) forming processing. Can be done.

As described above, according to the present invention, vertical pressing and horizontal pressing can be performed in one process by shifting the timing, so that horizontal pressing can be performed using a sectional die piercing punch, etc. There is no need to provide a notch in the area that intersects with the processing tool used for press processing, and it is sufficient to simply drill a through hole through which the tip of the processing tool passes, so vertical press processing can be performed perfectly. Accuracy can also be improved, so 2
There is no longer a need to divide the work into separate processes, improving work efficiency.

Further, according to the embodiment of the present invention, the punch is also urged upward by the cushion spring, so even if the cushion pin is removed when storing the mold, the punch will also be raised by lifting the upper mold holder. The cam slide slides up the inclined surface of the cam and moves outward by the spring force of the return spring, so it has the effect of not damaging machining tools such as piercing punches.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of the main part showing the state of the workpiece when press processing is completed by a conventional cross press processing device, Fig. 2 is an enlarged sectional view of the - line portion of Fig. 1,
Fig. 3 is a side sectional view showing the state of the workpiece when horizontal pressing is completed by the cross-pressing apparatus of the present invention, Fig. 4 is a partial sectional view taken along the - line in Fig. 3, and Fig. 5 is the main body. FIG. 3 is a side sectional view of a main part showing a state at the time when vertical pressing is substantially completed by the cross-pressing apparatus of the invention. A is a cross press processing device, a is a lower die holder, b
is an upper die holder, 11 is a punch, 12 is a cushion pin, 13 is a cushion spring, 15 is a cam slide, 17 is a processing tool, a piercing punch,
18 is cam, 20 is sexual die.

Claims (1)

[Claims for Utility Model Registration] It has a lower die holder and an upper die holder, a cam having an inclined surface on the upper part is fixed on the lower die holder, and a punch is made of cushion material so as to be movable in the vertical direction. The cushion material has a spring force capable of resisting the pressing force that presses the workpiece in the vertical direction, and a cam slide is attached to the side of the punch so as to be movable in the lateral direction. A substantially horizontal upper sliding surface is formed at the upper part of the cam slide, and a substantially horizontal upper sliding surface is formed on the lower surface of the upper mold holder, and when the upper mold holder is lowered, the upper mold holder comes into contact with the upper sliding surface of the cam slide, and the cam A cam slide presser that presses down the slide and allows lateral movement of the cam slide, and a sectional die that vertically presses a workpiece placed on the punch are fixed, and the cam slide A machining tool for machining the vertical portion of the workpiece to be press-formed in the vertical direction is attached to the punch side, and a machining tool that slides on the inclined surface of the cam as the cam slide moves up and down is attached to the other side. the cam slide is biased in a direction away from the punch by a return spring, and the processing tool is formed so as to be inserted into a through hole formed in the sectional die; Further, the inclined surfaces of the cam slide and the cam are such that when the upper die holder is lowered, the cam slide presser starts to come into contact with the cam slide, the processing tool sinks into the through hole, and the punch comes into contact with the lower die holder. A cross-press processing device, characterized in that the processing tool is formed so as to protrude from the through hole when in contact with the through hole.