JP3644030B2 - Punch positioning mechanism of press machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a punch positioning mechanism for a die of a press machine.
[0002]
[Prior art]
Conventionally, in a press machine, particularly a single press machine having a plurality of punches for a mold, as shown in FIG. 4, a plurality of punches 3 and 3 are provided for a lower mold 2. The upper part of each punch 3 is sandwiched between the holders 4 and 4 which are divided into two parts. The holders 4 are connected to the respective punch guides 5. The upper end of the holder 4 is supported by the auxiliary plate 6. Further, each punch guide 5 is held by a punch guide holder 8, and each punch guide holder 8 is supported by a sliding plate 7 that can slide up and down.
[0003]
Furthermore, the auxiliary plate 6 is supported on the sliding disk 7 by the support shaft 9. Then, fixing bolts 10 for centering and fixing the punches 3 to the two-divided holders 4 are provided, and the fixing bolts 10 are arranged at the four corners on the diagonal line of the holders 4 so that the auxiliary plates face upward from below. 6, and the punch 3 is fixed together with the holder 4. The position of the punch 3 centered with respect to the mold 2 is finely adjusted by the tightening of the four fixing bolts 10 of the holder 4 for positioning.
[0004]
[Problems to be solved by the invention]
However, in order to center the punch and position the mold, the fixing bolt is screwed upward from the lower side of the holder. Therefore, the bolt hole for the fixing bolt and the fixing bolt are visually checked. It was very difficult to do because it could not be done, and a lot of work time was spent. In particular, when a plurality of punches are made on a mold, fixing bolts must be screwed into four corners on the diagonal line with respect to each holder, and the fixing bolts of adjacent punches are in close contact with each other. Therefore, the operator's hand and the tightening tool are difficult to enter, and the work is very troublesome.
[0005]
Furthermore, when the fixing bolt for positioning each punch is finally tightened, the fixing bolt cannot be tightened unless each punch is pulled out from the mold. If it is not taken large, the workability is poor, and there is a problem that the centering position of the punch is incorrect when the fixing bolt is tightened, and the punch positioning operation cannot be easily performed in a trial and error state.
[0006]
Therefore, the present invention solves the problems of the punch positioning mechanism of such a conventional press machine, and the fixing bolt can be visually observed and tightened, and there is no troublesome work. It is an object of the present invention to provide a punch positioning mechanism for a press machine, which is capable of working and can be easily performed without deviation of the centering position of the punch.
[0007]
[Means for Solving the Problems]
To achieve the above object, the punch positioning mechanism of the press machine of the present invention is a punch positioning mechanism of a press machine that centers the punch 3 that moves up and down relative to the mold 2 of the press machine 1 and determines the position of the punch 3. In this case, a holder 4 for mounting the upper portion of the punch 3 is provided above the punch 3, a punch guide 5 integrally fixing the holder 4 is provided, and the punch guide 5 is slidable up and down. The punch guide holder 8 supported above is provided, the punch guide auxiliary plate 11 is provided below the sliding plate 7, the holder 4 and the punch guide holder 8 are supported by the punch guide support shaft 12, and the punch guide auxiliary plate 11 is supported. Are fixed to the sliding plate 7 to support the positioning of the punches 3 and the fixing bolts 10 around the punch guides 5 are arranged above the punch guide holders 8. While clamping the Suridoban 7 to adjust the centering of the punch 3 has a configuration for positioning the punch.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 is a schematic plan view showing an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along the line BB in FIG. It is. As shown in FIGS. 2 and 3, the press machine 1 is provided with a plurality of punches 3 and 3 for the mold 2, and the upper portions of the punches 3 are inserted into the holders 4 to connect the punches 3 to the holders 4. doing. The punch 3 may be one instead of plural for the mold.
[0009]
A holder 4 to which the punch 3 is connected is integrally fixed to a punch guide 5. Reference numeral 7 denotes a sliding plate which can slide up and down along the sliding shaft 13. Reference numeral 8 denotes a punch guide holder which penetrates the sliding plate 7 and penetrates the punch guide 5 in the center. The punch guide 5 penetrated by the punch guide holder 8 is supported from above the sliding disk 7. Reference numeral 12 denotes a punch guide support shaft having a lower end fixed to the holder 4 and an upper end penetrating the sliding plate 7 and attached to the punch guide holder 8 on the sliding plate 7.
[0010]
Reference numeral 11 denotes a punch guide auxiliary support which supports the punch guide holder 8 together with the punch guide 5 which is in contact with the lower portion of the sliding plate 7 and hangs downward from the sliding plate 7. The punch guide auxiliary support 11 supports the positioning of the punch 3 together with the supporting punch guide 5 by being screwed to the sliding disk 7 with bolts 14. As shown in FIG. 1, the punch guide holder 8 on the sliding plate 7 is provided with holes for fixing bolts at four corners on the diagonal line around the punch guide 5, and the fixing bolts 10 are provided in these holes. Screwed into the sliding disk 7.
[0011]
Next, when centering positioning of the punch 3, first, the sliding disk 7 is lowered along the sliding shaft 13, and the punch guide is inserted into the punch hole 15 of the mold 2. Screw the four solid bolts 10 around the punch guide 5 from above the holder 8 and tighten the punch guide holder 8 to the sliding plate 7 until the tip center of the punch 3 is positioned in the center of the punch hole 15 of the mold 2. The screwing of the four solid bolts 10 is adjusted.
[0012]
After this adjustment, the bolt 14 is screwed to hold the punch guide 5 together with the punch guide holder 8 directly below the sliding plate 7 while the punch guide auxiliary support 11 is fastened to the sliding plate 7. After the centering positioning of the punch 3 is completed, the sliding disk 7 is lifted along the sliding shaft 13 to complete.
[0013]
The centering positioning of the punch 3 was adjusted with the tip of the punch 3 inserted into the punch hole 15 of the die 2, but the punch 3 was positioned with the tip of the punch 3 positioned above the die 2. Even if centering positioning is performed, there is no problem.
[0014]
Although the embodiments considered to be representative examples of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and includes the above-described constituent features according to the present invention and also refers to the present invention. The present invention can be implemented with appropriate modifications within the scope of achieving the object and having the following effects.
[0015]
【The invention's effect】
As is apparent from the above description, the punch positioning mechanism of the press machine according to the present invention determines the position of the punch by centering the punch that moves up and down with respect to the die of the press machine. In the mechanism, there is provided a holder for mounting the upper part of the punch above the punch, a punch guide integrally fixing the holder, and a punch guide for supporting the punch guide on a sliding plate that can be slid up and down. A holder is provided, a punch guide auxiliary plate is provided at the lower part of the sliding plate, the holder and the punch guide holder are supported by a punch guide support shaft, and the punch guide auxiliary plate is bolted to the sliding plate to position each punch. Centering the punch while tightening the fixing bolt around the punch guide to the slider from above the punch guide holder. Since a configuration for positioning the adjusting punched, holes and fixing bolts for fixing bolts, in order to be able to visually clamping tool, it is possible to perform the fastening work in a short time yet easy tightening operation. In addition, since the four places around the punch guide can be seen, even if the adjacent fixing bolts are in close contact with each other, the tightening operation can be easily performed without bothering the tightening operation. Further, since the fixing bolt can be screwed even when the punch is inserted into the mold, the centering position of the punch is not deviated and the centering positioning can be easily performed. It has come to be expected.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
3 is a cross-sectional view taken along the line BB in FIG.
FIG. 4 is a longitudinal sectional view showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Press machine 2 Die 3 Punch 4 Holder 5 Punch guide 7 Sliding board 8 Punch guide holder 10 Fixing bolt 11 Punch guide auxiliary plate 12 Punch guide support shaft 13 Sliding shaft 14 Bolt 15 Punch hole

Claims (1)

In the punch positioning mechanism of the press machine that centers the punch (3) that moves up and down relative to the die (2) of the press machine (1) and determines the position of the punch (3), the punch (3) A holder (4) for mounting the upper part of the punch (3) is provided on the upper side, a punch guide (5) with this holder (4) fixed integrally is provided, and the punch guide (5) can slide up and down freely. The punch guide holder (8) is supported on the board (7), the punch guide auxiliary plate (11) is installed at the bottom of the sliding board (7), and the holder (4) and the punch guide holder (8) are punched. Supported by the guide support shaft (12), the punch guide auxiliary plate (11) is bolted to the sliding disc (7) to support the positioning of each punch (3) and fixed around the punch guide (5) Position the punch by adjusting the centering of the punch (3) while tightening the bolt (10) to the sliding disc (7) from above the punch guide holder (8). A punch positioning mechanism for press machines.

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