JPH0328980Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a continuous multi-stage former for continuously forming parts such as various mechanical parts and other metal heading products using punches and dies. The present invention relates to a device for supporting a punch in such a former with a pressure-receiving surface corresponding to the punching force of each process.

(Prior art and problems) The above-mentioned multi-stage forming machine is used to press and form materials by punching them each time while feeding the material from the first preliminary heading to the second, third, etc. processes. The punches used in each process correspond to the dies, and because different punches are used, the loads generated on the sheet piles that support each punch are different in each process.

For example, 3 to 4 in heading molding of parts etc.
It is often necessary in process design to apply a larger forging load in the middle of a process than in other processes.

However, as shown in FIG. 6, the sheet pile mounting portion on the punch side has conventionally been provided with a sheet pile groove 52 of a constant width _W1 having a partition 51 on the front end surface of a ram 50 that supports the load of the punch. Sheet pile 5
3 was fitted into it. Therefore, the width of the sheet pile 53 is also W ₁ , and since everything is the same, in processes where large loads are applied, even if the punch tip is made into a flange shape and enlarged, the important pressure-receiving part remains the same width and the pressure-receiving area is increased. Since it is not possible to do so, there is a problem that it may cave in due to long-term use.

(Technical Issue) Therefore, the technical issue of the present invention is to make it possible to arbitrarily select the pressure-receiving area of the sheet pile for a necessary process by not restricting the width of the sheet pile attachment part by the partition. do.

(Means for solving the problem) In order to solve the above-mentioned technical problem, the cargo receiving device in the homer of the present invention is provided in a line horizontally on the die block on the front end face of the fixed frame with a constant distance between the axes. A plurality of dies, a ram provided in front of each die so as to move forward and backward, and a load receiving sheet pile so as to be individually abutted and supported on the front end surface of the ram. In the load receiving device for a home machine, which includes a punch provided therein, a concave sheet pile mounting portion consisting of a continuous flat surface with no partition between the left and right side walls is provided on the front end surface of the ram, and separate sections are provided in the sheet pile mounting portion. The sheet piles are fitted adjacent to each other so as to be vertically slidable, and the sheet piles fitted in the sheet pile mounting portion are arranged such that the distance between their axes is the same as the distance between the axes of the die and the punch. Moreover, the overall width is constant, and the individual widths are formed so as to vary in size.

Moreover, it is preferable to provide a pressure receiving plate on the back surface of the said sheet pile attachment part.

(effect) The technical means works as follows.

In FIG. 1, when a ram 1 is moved by a crank motion and a punch 2 provided at the front end of the ram is press-fitted into a die 3 fixed at an opposite position, a material 4 is upset into a die hole and a predetermined shape is formed. During heading, a reaction force acts on the sheet pile 6 via the receiving block 5 on the punch side. Although this reaction force differs depending on each process, the pressure receiving portion of the punch corresponding to each process is supported by sheet piles ₆ , ₆ , .

(Effects) As described above, the present invention is provided with a concave sheet pile mounting portion 7 consisting of a continuous flat surface without partition between the left and right side walls 7a and 7b on the front end surface of the ram 1, and this sheet pile mounting portion The sheet piles 6 are fitted adjacent to each other so as to be vertically slidable, and the sheet piles 6 fitted in the sheet pile mounting portion have an axis spacing S equal to the distance between the axes of the die and the punch. The sheet piles are spaced at equal intervals and the width W of the whole is constant, and each width is different in size. It is possible to select any width and size that corresponds to the required process without being limited by can be prevented. Moreover, since there are no partitions, the limited area of the sheet pile mounting area can be used to maximum effect.
Also, the width and size of the sheet piles are different.
The axial center distance S is constant, so there is no need to change the homer-specific mechanisms such as the sheet pile attachment mechanism, knockout device, and vertical lifting device for adjustment.
It has a simple structure and can be implemented at low cost.

(Example) In FIGS. 1 and 5, reference numeral 10 denotes a fixed frame constituting the main body of the multi-stage former, and a plurality of dies 3 are installed in a row horizontally on the inner end surface of the left side with the die blocks 11 fitted. It is being

The ram 1 is provided on a fixed frame 10 so as to face the die 3, and is moved forward and backward by a crank mechanism.

The sheet pile attachment portion 7 is formed on the front end surface of the ram 1 in a U-shape when viewed from above.

2 to 4 show this sheet pile attachment part 7.
This mounting portion 7 has no partitions and consists of a flat recess that is continuous in the width direction. There are side walls 7a, 7 on both the left and right sides.
It has b.

The sheet piles 6 are fitted into the mounting portion 7 consisting of this recess so that adjacent ones are in contact with each other. Therefore, the width of each sheet pile 6 does not have to be constant as in the conventional method shown in FIG. 6. What is necessary is to use a width W ₂ or W ₃ wider than W ₁ and set it in the necessary process. In Figure 3, a wide sheet pile with a width of W ₃ is used in the third step to receive the largest punching force.

As described above, the overall width W of the sheet pile mounting portion 7 is constant, but the sheet piles 6 to be fitted therein can be arbitrarily selected within the frame.

Each sheet pile 6 has a through hole 6a for a knockout pin 12, and the tip of the knockout pin 12 contacts the punch lock 5 through this hole.
In addition, each sheet pile 6 is set to be able to slide up and down, and when raised or lowered by the lifting screw 13, the support position of the punch block 5 is adjusted by moving back and forth on the inclined cam surface 6b on the rear surface. Ru.

Reference numeral 14 denotes an operation knob for raising and lowering.

As shown in FIG. 3, the axial center distance S of the mounting portion of the sheet pile 6 is constant. Further, a pressure receiving plate 15 is attached to the inner surface of the sheet pile attachment portion 7 that comes into contact with each sheet pile. The pressure receiving plate 15 is provided as necessary to prevent the front surface of the ram from collapsing due to the punch reaction force, and to allow the sheet pile 6 to slide smoothly.

16 is a punch block in which the punch 2 is fitted and held.

A ram front plate 18 and a bottom plate 1 are provided on the front end surface of the ram 1.
This punch block 16 is integrally attached via mounting screws 17 via 9.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional side view of the heading part of a multi-stage homer implementing the present invention, Figure 2 is a front view of the present invention seen from the sheet pile installation side, Figure 3 is a front view showing an example of sheet pile arrangement, and Figure 4. 5 is an exploded perspective view of the ram and sheet pile, and FIG.
FIG. 6 is a perspective view of a ram and a sheet pile showing a conventional sheet pile attachment part. 1... Ram, 2... Punch, 3... Dice, 5
... Load receiving block, 6 ... Sheet pile, 7 ... Sheet pile attachment part, 10 ... Fixed frame, 15 ... Pressure receiving plate.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of dies 3 are provided in a row horizontally with a constant distance between the axes on the die block 11 on the front end surface of the fixed frame, and the dies 3 are positioned opposite to each other in front of each die and advance and retreat. a ram 1 configured to move;
In the load receiving device for a home machine, which includes a punch 2 provided through a load receiving sheet pile 6 so as to be individually abutted and supported on the front end surface of the ram 1, side walls on both left and right sides are attached to the front end surface of the ram 1. 7
A concave sheet pile attachment part 7 consisting of a continuous flat surface without partitions is provided between a and 7b, and individual sheet piles are fitted into this sheet pile attachment part adjacent to each other so as to be vertically slidable. , the sheet piles 6 fitted in the sheet pile mounting portion have a center-center spacing S that is the same as the distance between the respective axes of the die and punch, and an overall width W that is constant. A punch receiving device for a home machine, characterized in that the width of the punch is irregularly shaped. (2) The punch receiving device for a home machine according to claim 1 of the utility model registration claim, wherein a pressure receiving plate 15 is provided on the back surface of the sheet pile mounting portion 7.