JPS5922895Y2 - Press mold guide device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a press die guiding device that guides an upper die and a lower die using guide posts.

In a press die set, for example, a force guide post 1 is set upright on a lower die holder, and a bush is attached to the upper die holder as a guide hole into which the guide post is fitted. In many cases, a pole slider (a cylindrical sleeve with a number of poles protruding from the inner and outer surfaces of the sleeve that can be moved freely) is interposed therebetween to ensure smooth fitting.

In this type of guide device, the pole slider held at the force position 1 is inserted into the guide hole in order to increase the displacement (relative displacement between the upper mold and the lower mold). If not, a portion may protrude from the distal end surface of the guide post.

For this purpose, in the past, as seen in Japanese Patent Publication No. 51-29105, for example, a bushing was press-fitted into the mouth of a center hole drilled in the tip surface (lower end surface) of a guide post provided in an L mold holder. Using this bush as a guide, a rod with a flange at the upper end and a nine washer at the lower end is slidable, and a pole slider (pole retainer) is placed around the nine washers.
It was configured so that it could ride.

However, in the above-mentioned conventional device, the rod, which has a small diameter at the time of fitting the pole slider and the guide hole, is subjected to bending force, which tends to cause the rod to bend. The press-fitted bush (therefore, the pole slider) tends to fall out of the guide post, which poses a problem in durability.

Furthermore, since the sliding guide length of the rod inevitably becomes short, smooth sliding of the rod may be hindered.

The present invention solves the above-mentioned problems by making it possible to increase the diameter of the guide rod, which has a seat on the tip of which the pole slider is seated, to improve its strength, and to improve the strength of the guide rod. The retaining pin that extends in the note direction that intersects the sliding direction of the guide rod prevents the puller from falling from the guide post even if the guide rod receives an impact, and furthermore, the sliding contact length of the rod is lengthened. It is characterized by ensuring smooth sliding relative to the guide post 1-.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 1 is the lower mold holder, 2 is the upper mold holder,
The lower mold holder 1 holds a lower mold (not shown), and the upper mold holder 2 holds a -L mold (not shown) at predetermined positions.

A guide post 3 is provided upright on the lower mold holder 1, while a bush 4 forming a guide hole is provided on the upper mold holder 2 in correspondence with the guide post 3.

A guide hole 5 extending in the axial direction of the guide post 3 is opened coaxially with the guide post 3 at the distal end surface (upper end surface in the figure), and a rod 6 is slidably inserted into the guide hole 5. has been done.

The tip of this rod 6 protrudes from the tip end surface of the guide post 3, and a seat 7 extending radially outward is formed there.

In this embodiment, the seat 7 is formed into a flange shape, and its outer diameter is slightly larger than the outer diameter of the force-id posts 1 to 3 and slightly smaller than the inner diameter of the bushing 4.

A long hole 8 is formed in the rod 6, and the long hole 8 has a second
As shown in the figure, it passes through the rod 6 in the radial direction and has both axial ends 8a and 8b closed.

An elongated hole 8 and the guide hole 5 are penetrated by a removal stopper pin 9 which is inserted into the guide post l-3 in a radial direction. By abutting the end portion 8b, the rod 6 is prevented from being pulled out from the guide post 3.

The removal stopper pin 9 is a screw rod in the embodiment, and has a pair of screw holes 10a, 10 that extend through the guide hole 5 in the radial direction and are respectively opened on the side surface of the guide post 3.
b can be used to attach it to the guide post 3.

That is, for example, one end 9a of the threaded rod 9 is screwed into one threaded hole 10b, passed through the guide hole 5 and the elongated hole 8, and the one end 9a is screwed into the other threaded hole 10a. 9 is inserted and held in the guide post 3 in a double-sided manner, with both ends 9a and 9b screwed into a pair of screw holes 10a and 10b.

Of course, the screw holes 10a and 10b may be simply holes, and the retaining pin 9 may be press-fitted into the holes.

The guide post 3 is provided with coil springs 11 in order from its base end side. The pole slider 12 is fitted, and the pole slider 12 is seated on the seat 7 by the push-up of the coil spring 11.

As a result, in the state shown in FIG. 1 in which the pole slider 12 is not fitted into the bush 4, the guide rod 6 is moved to
The pole slider 9 is partially protruded from the tip surface of the guide post 3.

Next, the operation of the above-mentioned constituent device will be explained.

First, when the upper mold holder 2 descends from the state shown in Fig. 1,
Initially, only the pole slider 12 is fitted into the fish 4, but at this time the pole slider 12 is fitted into the guide post I-
No downward movement for 3.

When the upper mold holder 2 further descends and the guide post 3 begins to be inserted into the bush 4, the pole slider resists the coil spring 11 by an amount equal to half of the descending amount of the upper mold holder 2. While the guide post 12 is moving downward, the guide post 3 is inserted into the bush 4.

When the guide post 3 and the bush 4 are fitted together via the pole slider 12, a punching operation or the like is performed.

At the stroke end, as shown in FIG. 3, the guide rod 6 escapes into the guide hole 5 due to its own weight or by hitting a die base (not shown).

Thereafter, when the upper mold holder 2 rises, first the guide post 1-3 and then the pole slider 12 are pulled out from the bush 4, returning to the state shown in FIG. 1.

Although the embodiments have been described above, the present invention is not limited to this. For example, the lower mold holder 1 may be provided with a bush 4, and the upper mold holder 2 may be provided with a force-width post 3. In this case, the coil The spring 11 becomes unnecessary.

That is, the guide rod 6 protrudes under its own weight and the weight of the pole slider 12, and a portion of the pole slider 12 protrudes from the tip end surface of the guide post 3.

Further, the guide hole 5 may be formed by penetrating the guide post 3 in the axial direction, or in other words, the guide post 3 may be configured using a cylindrical body. In this case, the guide hole is bored in the guide post I/3. This eliminates the need for additional work.

Of course, the guide post 3 and the bushing 4 may be of a structure that is provided directly on the mold, and furthermore, the guide hole into which the guide post 3 is inserted may be formed directly on the mold or mold holder without using the bushing 4. You may.

As is clear from the above description, in the present invention, a guide rod equipped with a seat on which a pole slider is seated is inserted into a guide hole of a guide post without intervening a bush, etc. Since the diameter of the rod can be increased and the guide rod is prevented from being pulled out using a retaining pin and a long hole, a gap is provided between the guide rod and the guide post to provide a member to prevent the guide rod from being pulled out. There is no need to set this, and therefore, not only can the diameter of the guide rod be increased by the amount of the gap, but also the thickness of the guide post can be increased, and its strength can be improved.

Furthermore, the guide rod is prevented from being removed from the guide post by a locking pin that is inserted into the guide post in a manner that intersects the sliding direction of the guide rod. You can get the stop function.

In particular, since the pull-out locking pin is held by the guide pin in a double-sided manner, the pull-out locking function can be further improved in combination with the above-mentioned feature.

Furthermore, since the entire part of the guide rod inserted into the guide hole slides against the guide post, its sliding length is significantly longer than that of conventional ones. The diameter of the guide rod is large, and the retaining pin can also contribute to guiding the guide rod, so the overall sliding area relative to the guide post can be dramatically increased, resulting in smooth sliding. movement is obtained.

Furthermore, since the guide hole has a large diameter, the guide post 3 can be constructed using a commercially available cylindrical body as is, and various other effects can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a perspective view of a guide rod portion, and FIG. 3 is a sectional view of a main part showing an operating state different from that in FIG. 1. 1... Lower mold holder, 2... Upper mold holder, 3... Guide post, 4... Bush (guide hole), 5... ... Guide hole, 6...
...Guide rod, 7...Catch, 8...
Elongated hole, 9...Remove stop pin, 10a, 10b.
...Screw hole (fixing hole), 12...Pole slider.

Claims (1)

[Scope of utility model registration request] A press mold is provided with a force-id boss on either the lower mold side or the lower mold side and a guide hole on the other side, and the guide post is fitted into the guide hole via a pole slider. The guide device includes: a guide hole that is open at the tip end surface of the guide boss 1 and extends in the axial direction of the guide boss 1; a guide rod that is slidably inserted into the guide hole; and a guide rod that is slidably inserted into the guide hole. A seat is formed at the tip of the guide rod that protrudes from the tip end surface of the post and extends radially outward of the guide rod; An elongated hole whose proximal end side is closed, and an elongated hole extending in the radial direction of the guide post, passing through the guide hole and the elongated hole, and having both ends connected to a fixing hole formed in the peripheral wall of the force-width post. A guide device for a press mold, characterized in that the guide device comprises an ejector stop pin inserted and fixed, and the pole slider fitted in the guide post is seated on the catch seat.