JPH032344Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a lifter for a press machine that presses, bends, etc. press materials such as metal plates.

BACKGROUND ART A conventional press device and its lifter are constructed as shown in FIG. In this figure, the symbol 1
A lower mold is a bending punch fixed to the upper center of the lower mold main body 2, and a corner 4 of the side surface 3 is formed with a curved surface for punching. An upper mold 5 is installed above the lower mold 1 so as to be able to reciprocate in the vertical direction so that it can engage with and separate from the lower mold 1, and a pressing member 7 for the press material 6 is placed in the center of the upper mold 5. It is provided.

The lifter 8 is installed at a position that can face the side surface of the lower die 1, and works in conjunction with the upper die 5 to support the edge of the press material 6 and guide the press material 6 to the pressing position, thereby moving the lower die 1 after pressing. The press product 9 is removed from the lower die 1 by moving along the side surface 3 of the press product 9.
The edge of the lower mold 1 is supported from below, and a contact surface 10 with the side surface 3 of the lower mold 1 is formed at a location facing the side surface 3, and a press is provided on the upper side as shown in FIG. A terrace portion 11 is formed to support the edge of the product 9. Further, a plurality of vertical holes 12 are provided at the portions of the lower mold main body 2 that sandwich the lower mold 1, into which a guide rod 13 that supports the lifter 8 is inserted, and a coil spring 14 that pushes the guide rod 13 upward. has been inserted. In addition, the reference numeral 15 is a stopper of the coil spring 14 provided at the bottom of the vertical hole 12, the reference numeral 16 is a guide bush provided on the inner wall of the vertical hole 12, the reference numeral 17 is a vertical groove formed in the guide rod 13, and the reference numeral 18 is a lower die main body. This is a stopper that is fixed to 2 and inserted into the vertical groove 17.

As a result, while the upper mold 5 escapes upward, the lifter 8 is in the position shown in the second figure with respect to the lower mold 1, and the press material 6 is placed thereon as shown on the right side of FIG. Next, when the upper die 5 starts lowering, a presser pin (not shown) overcomes the coil spring 14 and pushes the lifter 8 downward, and the presser member 7 presses the press material 6 downward. In this case, there is a protrusion 1 at the center of the upper part of the lower mold 1.
9 is formed, and since a recess 20 that engages with the projection 19 is previously formed in the center of the press material 6, the pressing action of the presser member 7 causes both 1
9 and 20 engage, thereby aligning the press material 6 for processing. Thereafter, the upper mold 5 further descends, and in cooperation with the lower mold 1 presses or bends the press material 6 to form a pressed product 9 as shown on the left side of FIG. 2 and FIG. 3. Thereafter, when the upper mold 5 separates upward, the lifter 8 is released from the pressure and rises by the action of the spring 14, and at the same time removes the pressed product 9 from the lower mold 1, and removes the pressed product 9 from the lower mold 1.
The edge of the pressed product 9 is supported by the press as shown in FIG.

The pressed product 9 is taken out of the press device from this position and sent to the next processing device.

Problems to be Solved by the Invention However, the conventional lifter 8 is formed with a terrace 11 in order to obtain stability of the press product 9 on the lifter as described above, but the shape and size of this terrace 11 are The height must be determined by taking into account the spring back of the pressed product 9, etc., as well as changes in the dimensions of the pressed product 9 due to wear of the dies 1 and 5, etc. Therefore, the terrace portion 11 of various dimensions is determined. A lifter 9 is prepared in advance, and is replaced with a lifter of a size that matches the size of the pressed product every predetermined number of presses.

For this reason, a large number of man-hours are required, which is an impediment to improving the efficiency of the press process. Also,
If the edge of the pressed product 9 is dropped into the terrace 11 in order to stabilize the pressed product 9, the pressed product 9 cannot be immediately moved in the lateral direction. is becoming difficult.

Means for Solving the Problems In order to solve the above problems, the present invention is installed at a position that can face the side of the lower mold of a press mold, and supports the edge of the press waste material in conjunction with the press mold. The lifter of the press equipment guides the pressed material to the pressing position, moves along the side of the lower mold after pressing, removes the pressed product from the lower mold, and supports the edge of the pressed product from below. The portion facing the side surface of the lower mold is partially or entirely formed as a movable member that can reciprocate in a direction perpendicular to the side surface, and the movable member moves from the lifter body toward the center of the lower mold. The movable member is always energized, and has a contact part with the side surface of the lower mold at its tip, a flat support surface that supports the edge of the pressed product on the upper side, and a flat support surface on the lower side that supports the edge of the pressed product. adopts a structure in which a slope is formed that can come into contact with the corner of the side surface of the lower mold.

Action When the upper mold starts to descend and the lifter is pushed down, the slope of the movable member comes into contact with the corner of the side of the lower mold, and the movable member moves outward of the lower mold, causing the press to stop. At the beginning of the process, the contact part comes into contact with the side surface of the lower mold, and continues to descend while maintaining this contact state.

When the upper mold is raised after pressing, the movable member also rises together with the lifter body, and at this time the support surface pushes up the edge of the pressed product from below. As a result, the pressed product is removed from the lower mold. Further, when the contact portion of the movable member no longer contacts the side surface of the lower die, it protrudes toward the center of the lower die, and the edge of the pressed product rides on the protruded support surface.

Embodiment FIG. 1 shows an embodiment of a lifter of a press device according to the present invention. Note that in FIG. 1, the same reference numerals are given to the same parts as in FIG. 2.

In FIG. 1, the reference numeral 21 indicates that the lifter 8 is the lower die 1.
It is a movable member formed at a location facing the side surface 3 of. The movable member 21 is provided entirely or partially at a location facing the side surface 3 of the lower mold 1, and includes a front part that projects outside the lifter body 22 and a rear part that fits into a cavity within the lifter body 22. It is always biased toward the center of the lower die 1 by a coil spring 23 housed in the cavity.
Note that reference numeral 24 is a step formed at the boundary between the front part and the rear part, and the lifter main body 22 of the movable member 21
It functions as a stopper to prevent it from falling off. Moreover, since it has such a step 24, the upper part of the lifter main body 22 is formed in the shape of a lid that can be opened and closed for convenience of assembly.

The front part of the movable member 21 is directed toward the center of the lower mold 1 by the action of the coil spring 23, and when no force is applied in the opposite direction, the front end of the movable member 21 is lowered further than the end of the lifter 8 in the past. A contact portion 25 that protrudes in the direction of the mold 1 and can come into contact with the side surface 3 of the lower mold 1 is formed there, and a flat support surface 26 that supports the edge of the press material 6 or the press product 9 is formed above the contact portion 25. Further, on the lower side thereof, a slope 27 is formed which can come into contact with the corner 4 of the side surface 3 of the lower mold 1.

Next, the movement of the lifter 8 will be explained together with the procedure of the press operation.

As shown in the right half of Fig. 1, press material 6
is placed on the flat support surface 26 of the movable member 21, and then, when the upper mold 5 starts to descend, a presser pin (not shown) overcomes the coil spring 14 and pushes the lifter 8 downward, and the presser pin The member 7 pushes the press material 6 downward. As a result, the protrusion 19 of the lower mold 1 and the recess 20 of the press material 6
The slope 26 of the movable member 21 hits the corner 4 of the lower mold 1 and begins to be pulled toward the lifter main body 22. As pressing or bending progresses due to lowering of the upper die 5, the movable member 21 moves to its contact portion 25.
It descends while touching the side surface 3 of the lower mold 1 and reaches the position shown by the chain line.

When the pressing or bending is completed in this way, the upper mold 5 rises, and the lifter 8 moves the upper mold 5
It is raised by the action of the coil spring 14 when it is pressed by the coil spring 14. Along with this rise, the movable member 21 pushes up the pressed product 9 from below with its flat support surface 26,
Immediately after the pressed product 9 is removed from the lower mold 1, the contact portion 25 separates from the side surface 3 of the lower mold 1, so that it jumps out toward the center of the lower mold 1 due to the action of the coil spring 23, as shown in the left half of FIG. The edge of the pressed product 9 is supported in this state. At this time, the left and right movable members 21 simultaneously protrude toward the center of the lower mold 1, so that the press product 9 is not displaced from the lifter 8.

Thereafter, the pressed product 9 is taken out from the lifter 8, a new pressed material 6 is placed on the lifter 8, and the same operations as above are repeated to perform pressing or bending.

Effects of the Invention As described above, in the present invention, the lifter 8 is provided with the movable member 21, so that the pressed product 9 after molding can be supported on a flat, wide surface. Therefore, it is possible to discharge the pressed product 9 onto the lifter 8 in a stable state at all times, thereby improving workability in tandem processing and optimizing feedability in transfer processing. In addition, without paying attention to the spring back of the pressed product 9, wear of the dies 1 and 5, etc., the pressed product 9 can be constantly pressed.
Since the lifter 8 can be supported in the correct posture, there is no need to replace the lifter 8 as often as in the past.Furthermore, there is no need for steps such as the terrace part 11 as in the past, and the upper surface of the movable member 21 can be made flat, so the press This allows the goods 9 to be carried out smoothly. In particular, even when using a two-dimensional transfer, the press product 9 can freely slide in the horizontal direction, so that the feedability of the press product 9 is not hindered.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing an embodiment of the lifter of the press device according to the present invention, in which only the right half of the upper die is shown, only the right half of the pressed material is shown, and only the left half of the pressed product is shown. FIG. 2 is a sectional view similar to FIG. 1 showing an example of a conventional lifter, and FIG. 3 is a partially cutaway vertical sectional view of a conventional lifter supporting a pressed product. 1: Lower mold, 3: Side, 4: Corner, 5: Upper mold,
6: Pressed material, 8: Lifter, 9: Pressed product,
21: Movable member, 23: Coil spring, 25: Contact portion, 26: Support surface, 27: Slope.

Claims (1)

[Scope of utility model registration request] It is installed in a position that can face the side of the lower mold of the press mold, and works in conjunction with the press mold to support the edge of the press material while guiding the press material to the pressing position, and to guide the press material to the pressing position along the side of the lower mold after pressing. In a lifter of a press device that moves to remove a pressed product from a lower mold and supports the edge of the pressed product from below, the portion of the lifter that faces the side surface of the lower mold is partially or entirely perpendicular to the side surface. The movable member is formed as a movable member that can reciprocate in the direction, and is always biased from the lifter body toward the center of the lower mold, and the movable member has a tip that is connected to the side surface of the lower mold. A flat support surface is formed on the upper side of the contact area to support the edge of the pressed product, and an inclined surface that can come into contact with the corner of the side surface of the lower mold is formed on the lower side of the flat support surface. Lifter for press equipment.