JPS6320434Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is used to forge metal materials in stages from coarse to fine using a punch and die to form bolts, nuts, or other metal parts. It is something that will be done.

Prior art When setting the die and punch in a fixed position in a continuous multi-stage forming machine and aligning the shapes, if the punch is not centered correctly, the forged product will be distorted and a high-precision, good product cannot be obtained. do not have.

Conventionally, however, the centering of such punches has been adjusted by adjusting the tightness of the mounting screws, but this has to rely on the intuition of an expert, which is time-consuming, inefficient, and difficult to improve productivity. This has become a problem that cannot be overlooked.

For this reason, a device for measuring timing using a detector has been proposed in, for example, Japanese Patent Application Laid-Open No. 57-156853, but this requires the addition of a special mechanism, making the device large-scale and costly. It is disadvantageous.

Technical Issues Therefore, the technical issue of the present invention is to make it possible to easily perform high-precision adjustment and readjustment by using the unique mechanism of the multi-stage homer as is and making minor modifications. .

Means for solving the problem In order to solve the above technical problem, the present invention
In a punch holding device for a multi-stage former, a punch holder 3 for inserting and holding a punch 1 corresponding to a die mold 4 is movable in the centering direction of the die mold by screwing a set bolt 8 (or 9). ,
a cylindrical sleeve 15 secured to the set bolt 8 by a key 14 so as to rotate together with the bolt;
Dial board 1 that is fitted onto the outside and can be freely rotated
6, and a set screw 17 for fixing the dial board 16 to the sleeve 15,
An indicating gauge 22 is provided on a fixed part corresponding to the dial board 16.

Embodiment FIG. 1 shows a continuous multi-stage former. punch 1
A plurality of punch holders 3, 3, . . . are attached in a row horizontally to a moving ram 2 that reciprocates back and forth by a crank motion, and the punch holders are fitted and held by each of the punch holders. The die mold 4 is a fixed base 6 of the main body frame 5
are fixed in parallel so as to correspond to each of the punches 1, 1, . . . .

A moving knife 7 that sends a metal wire material as a material to the tip end of a quill (all not shown) and moves it across the quill tip opening.
The material is cut to a certain length, fed to the first die, pressed by a punch, and sequentially fed from the first die to the subsequent die mold, each time pressed by the corresponding punch to form a pressed molded product of a predetermined shape.

Punch holders 3, 3, which are the subject of this invention...
is movable in the left and right, up and down, and front and rear directions with respect to each corresponding die mold 4, 4, etc., and each movement adjustment is performed by three set bolts 8, 9, 10.

Figures 2 and 3 show the punch holder part, and the punch holder 3 is shown as a whole in the left-right direction (in the direction of arrows A and A') in Figure 3, with the fulcrum shaft 11 at the lower end as a fulcrum.
It is supported so as to be able to swing upward and downward within the rectangular vertically elongated hole 12 (in the directions of arrows RO and RO').

As shown in FIGS. 3 and 4, the left-right centering set bolt 8 is provided on the left side in correspondence with the stopper bolt 13 on the right side. A sleeve 15 fixed with a key 14 is provided on the set bolt 8, and a dial board 16 is provided on the sleeve 15 so as to be freely rotatable, but usually it is fixed to the same body with a set screw 17. The tip of this set bolt 8 faces into a square hole 18 formed in the upper bracket body 3a of the punch holder 3, and is screwed so that it can move forward and backward.
8 and is brought into contact with a fixed sleeve 19 fitted therein with a clearance. The fixing sleeve 19 is fitted onto a fixing bolt 20 of the punch holder 3. The dial board 16 is provided with a scale 21 as shown in FIG. 5, and the amount of centering movement in the left and right direction is measured by matching the scale 21 with a gauge 22 provided on a corresponding fixed part.

The upper plate 2 is attached to the upper end of the mounting plate 23 of the punch holder 3.
4 is attached so as to project forward, and a set bolt 9 for centering in the vertical direction is provided thereon.
This set bolt 9 is also provided with a dial panel 25,
Further, a gauge is provided in the corresponding fixing portion, but its structure is the same as that of the left-right centering set bolt, and detailed explanation thereof will be omitted.

A sheet pile 27 having a tapered surface 26 is interposed between the front part of the moving ram 2 and the mounting plate 23 so as to be able to move up and down, and a set bolt 10 is provided to perform centering in the front and rear direction using this. . The provision of the dial board 28 on the set bolt 10 and the provision of the gauge 29 on the corresponding fixed portion are similar to those described above.

Operation When the set bolt 8 for centering in the left and right direction is screwed, its tip comes into contact with the fixed sleeve 19 and pushes it, so the punch holder 3 moves in the right direction (arrow Move to b). When centering is completed, loosen the set screw 17 and turn the dial 16 to set the position to match the gauge 22. Thereafter, centering can be easily performed using the set scale.

For centering in the vertical direction, the punch holder 3 is moved upward or downward by screwing the set bolt 9, and the centering position at that time is set using a dial.

Also, the punch holder 3 may be moved in the front-back direction (arrows C and C') by moving the sheet pile 27 up and down with the set bolt 10 in the front-back direction.

When the horizontal and vertical centering is completed, the fixing mounting bolt 20 and the lower fulcrum shaft 11 are tightened with screwed nuts 30 and 31, respectively, to fix the punch holder 3 immovably.

Effects of the Invention As described above, the present invention includes a cylindrical sleeve secured to a set bolt 8 with a key 14 so as to rotate together with the set bolt 8 provided to move the punch holder 3 in the centering direction of the die mold. 15, a dial board 16 that is fitted onto the outside and can be freely rotated, and a set screw 17 that fixes the dial board 16 to the sleeve 15. gauge 22
As a result, the centering of the punch can be easily and quickly performed using the set bolt, which is conventionally unique to multi-stage formers, and the dial panel 16 and the gauge 22 of the fixed part can be rotated simultaneously with the screw operation of the set bolt. The proper centering position can be confirmed, and since no additional equipment is required, the mechanism is simple and can be implemented at low cost.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the main parts of a multi-stage former using this invention, Fig. 2 is an enlarged longitudinal sectional side view of the punch holder, Fig. 3 is a front view of the punch holder, and Fig. 4 is a horizontal centering set bolt. FIG. 5 is an enlarged longitudinal sectional front view of the dial display section. 1...Punch, 3...Punch holder, 4...
Die mold, 8, 9, 10...Set bolt, 1
1...Fully shaft, 15...Sleeve, 16...Dial board, 17...Set screw.

Claims (1)

[Scope of utility model registration request] In a punch holding device for a multi-stage former, a punch holder 3 for inserting and holding a punch 1 corresponding to a die mold 4 is movable in the centering direction of the die mold by screwing a set bolt 8 (or 9). , a cylindrical sleeve 15 secured to the set bolt 8 with a key 14 so as to rotate together with the bolt.
, a dial board 16 that is fitted onto the outside and can be rotated freely, and a set screw 17 that fixes the dial board 16 to the sleeve 15, and an indicator gauge is provided on the fixed part corresponding to the dial board 16. 22. A punch centering display device for a home machine, characterized in that the punch centering display device comprises: 22.