JPS637387Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a mold support for press mold setting, which allows the load bearing capacity to be easily set to a desired value, and which is suitable for the press machine's bolster. It relates to something that is configured so that it can be easily attached and detached.

[Conventional technology]

As a conventional mold support means for setting a press mold, there is one shown in, for example, Japanese Utility Model Application No. 51-147147. This device pushes a rotary wheel supporting the main ball so that it can rotate in any direction into a storage hole drilled on the bolster while compressing a disc spring installed at the bottom of the storage hole. A stopper ring for preventing the rotating wheel from popping out is attached to the opening. The mold is
It is placed on the non-directional rotating wheel and introduced onto the bolster with almost no resistance, and after the position is determined, the mold is pushed down with a clamp. be submerged within.

[Problems that the idea should solve]

In this way, for example, if the rotary wheel breaks down and needs to be replaced,
It was necessary to take out the stopper ring and rotary wheel one after another from the storage hole, push a new rotary wheel into the storage hole, and then attach the stopper ring, which was a tedious task. In particular, in order to increase the mold weight bearing capacity of this support means, a disc spring with a high equivalent elastic modulus is required, and it is necessary to push the rotary wheel over the disc spring and to fit the stopper ring in the pressed state. Working on the bolsters was extremely difficult and dangerous. Moreover, for this reason, it is similarly difficult to change the disc springs to ones having different elastic modulus in order to change the load bearing capacity of each support means. In addition, since the bolster itself has a storage hole in which a disc spring and a non-directional rotating wheel are installed, if one of the multiple mold support means breaks down, the entire bolster will be repaired. became unusable, and the operating rate of the press mold decreased.

This invention was devised under the above circumstances, and it solves the problems of the conventional example, allows for easy installation and removal on the press machine's bolster, and also allows for easy adjustment of the individual load bearing capacity. The purpose is to provide a press die support that can be set to a desired value.

[Means for solving problems]

In order to solve the above problem, this invention takes the following technical measures.

That is, the mold support for press mold setting of the present invention has a constant outer diameter corresponding to the inner diameter of the storage hole drilled on the bolster of the press machine, a constant inner diameter smaller than that, and a storage hole on the bolster of the press machine. A bottomed cylindrical case having a predetermined length in the vertical direction corresponding to the depth of the hole and open at the top, and a cylindrical outer surface that slides into contact with the inner surface of the bottomed cylindrical case, and a semi-concave spherical surface on the top. A shaped seat portion is formed, and a plurality of cylindrical spring storage chambers are formed in the lower part, the lower end of which is open and extends parallel to the axial direction of the bottomed cylindrical case, at multiple locations spaced apart from each other in the horizontal direction, and the bottomed cylindrical case a ball support member that is fitted into a cylindrical case and can reciprocate vertically over a predetermined distance; and a ball support member that is rotatably mounted on a seat portion of the ball support member via a large number of small balls, and that the balls are The vertical position relative to the ball support member is such that when the support member is in the upward movement position, the top part protrudes from the upper surface of the bolster, and when the ball support member is in the downward movement position, the top part is recessed from the top surface of the bolster. The set main ball is removably attached to the upper open part of the bottomed cylindrical case to form the upper surface of the bottomed cylindrical case and regulates the upper moving end of the ball support member, and an outer lid having a window that allows the top of the main ball to protrude from the top surface of the bottomed cylindrical case; A plurality of compression coil springs are loaded on the bottom surface so that the lower ends come into elastic contact with the bottom surface of the bottomed cylindrical case.

[Effect]

The mold support of the present invention is not built into the holding hole itself drilled on the bolster as in conventional examples, but can be easily attached to and removed from the bottomed circular storage hole drilled on the bolster. It is constructed as a unit that can be used. Therefore, it can be easily attached to and removed from the bolster. Therefore, even if any one of the plurality of mold supports of the present invention installed on the bolster breaks down, the broken support can be easily replaced with a normal support. This solves the problem of conventional methods in which when one of the die supporting means on the bolster breaks down, the press machine has to be stopped while the broken die supporting means is repaired. Ru.

Moreover, the outer cover of the mold support of the present invention is
Since it can be attached to and detached from the bottomed cylindrical case, it can be easily disassembled.

Then, in the lower part of the ball support member that is inserted into the bottomed cylindrical case, a plurality of cylindrical spring storage chambers whose lower ends are open and extend in the axial direction of the case are formed at multiple locations spaced apart from each other in the horizontal direction. Therefore, by loading compression coil springs into a selected number of spring housing chambers among the plurality of spring housing chambers, the upward elastic biasing force applied to the ball support member can be easily set to a desired value. be able to. That is, since the spring housing chambers are provided horizontally apart from each other in the lower part of the ball support member, the compression coil springs housed in these chambers elastically support the ball support member upward in parallel. Therefore, it is possible to obtain an elastic biasing force proportional to the number of compression coil springs.
This cannot be achieved in the conventional example in which elasticity is obtained using disc springs stacked one above the other.

〔effect〕

As described above, the mold support of the present invention includes a ball support member, a compression coil spring, and a compression coil spring inside the bottomed cylindrical case.
It is constructed as a unit body that incorporates the main ball, etc., and can be easily attached to and removed from the storage hole on the press machine's bolster, so there is no chance of a malfunction occurring in one of the multiple die supports. However, this can be easily converted into a normal mold support,
This has the effect of solving the conventional problem of having to stop the press machine while the mold support means is being repaired.

Furthermore, the mold support of the present invention can be easily disassembled by removing the outer cover, and furthermore, a plurality of predetermined spring accommodation chambers are formed at the bottom of the ball support member, spaced apart from each other in the horizontal direction. Therefore, by loading a selected number of compression coil springs into the spring housing chambers, the upward elastic biasing force to be applied to the ball support member can be easily set to a desired value. That is, in this invention,
Even if you do not prepare coil springs with various elastic forces, if you prepare a predetermined number of coil springs with one type of elastic force, you can adjust the load bearing capacity to the desired value by selecting the number as described above. It can be set as follows.

[Explanation of Examples]

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

As shown in FIG. 1, the mold support 1 of this example is
In a bottomed cylindrical case 2 having a constant outer diameter and a constant inner diameter, a movable rotary wheel that supports the main ball 5 so as to be rotatable in any direction is movable up and down a certain distance and is elastically biased upward. It is constructed by incorporating it into a unit.

The movable rotary wheel extends in the axial direction of the bottomed cylindrical case and has a plurality of cylindrical spring storage chambers 10 with an open bottom spaced apart from each other in the horizontal direction. At the same time, the main ball 5 is rotatably supported via a large number of small balls 6 on the seat 9 of the ball support member 7, which has a semi-concave spherical seat 9 formed on the upper part, and A regulating ring 11 is provided in the opening of the seat 9 and has a suitable inner diameter to protrude inward and prevent the small balls from flowing out. The ball support member 7 has an outer diameter corresponding to the inner diameter of the bottomed cylindrical case 2, and holds compression coil springs in a selected number of the spring accommodation chambers 10 at the lower part of the ball support member 7. It is pushed into the bottomed cylindrical case 2. An outer cover 4 provided with a window 2 is removably fixed to the opening of the bottomed cylindrical case 2, thereby defining an upper end of movement of the movable rotary wheel. Note that the outer cover 4 has a male thread shape that can be screwed into a female thread formed on the inner surface of the opening of the bottomed cylindrical case 2, and is provided with a tool engagement hole 13, so that it can be attached to the bottomed cylindrical case 2. This is convenient because the attachment and detachment work can be easily performed.

It is convenient if the spring housing chambers 10 are arranged in a ring shape on the lower surface of the ball support member 7 as shown in FIG. 2, since this makes it easier to balance the biasing forces of the springs stored in the chambers. . The vertical position of the main ball 5 with respect to the ball support 7 is such that the top of the main ball 5 slightly protrudes from the window 3 when the upper shoulder of the movable rotary wheel is in contact with the inner surface of the outer cover 4. Set.

Next, the usage and operation of the mold support of this example will be explained.

FIG. 3 shows the press machine before the upper and lower molds are attached, and 15 is a machine frame, 16 is a ram to which the upper mold is attached, and 17 is a bolster to which the lower mold is fixed. The upper surface of the bolster 17 is provided with a plurality of bottomed cylindrical accommodation holes 18 each having a predetermined inner diameter and capable of accommodating the mold support. The depth of the storage hole 18 is such that when the mold support is fitted into the storage hole 18, the top of the main ball 5 of the movable rotary wheel is at a predetermined height H above the upper surface of the bolster 17, as shown in FIG. set to stand out. This height H can be adjusted by appropriately interposing a thin plate-like adjustment plate between the bottom surface 19 of the storage hole 18 and the bottom surface 20 of the mold support 1. In this way, the mold support of the present invention is composed of a unit body that is assembled to have a predetermined function, so it can be installed in a press machine by the simple operation of fitting it into the storage hole 18 of the bolster 17. It can be assembled, and replacement and repair can be done quickly as well.

The load bearing capacity of this mold support is determined by the total elastic force of the compression coil springs 8 interposed between the ball support member 7 and the bottom surface of the bottomed cylindrical case 2. In the present invention, the outer cover 4 of the case is removed, the movable rotary wheel inside is taken out, the number of spring storage chambers at the bottom of the ball support member 7 is selected, and the desired number of springs are loaded therein. Its load-bearing capacity can be set as desired.
Since each spring housing chamber 10 has a cylindrical shape, it is easy to load a compression coil spring therein.

The bolster 17 on which the mold support 1 is installed includes
A mold to be fixed to this bolster is carried in with almost no resistance, and is fixed with a suitable clamper (not shown) while being pushed down onto the bolster. At this time, the movable rotary wheel is moving downward inside the bottomed cylindrical case 2 while compressing the compression coil springs 8.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal side view, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a press machine in which the mold support of the invention is used. FIG. 4 is a sectional view showing the installed state of the mold support. 1... Mold support, 2... Bottomed cylindrical case,
3...Window, 4...Outer cover, 5...Main ball, 6...
Small ball, 7... Ball support member, 8... Compression coil spring, 9... Semi-concave spherical seat, 10... Spring storage chamber.

Claims (1)

[Claim for Utility Model Registration] A fixed outer diameter corresponding to the inner diameter of a storage hole formed on the bolster of the press machine, a smaller fixed inner diameter, and a predetermined vertical direction corresponding to the depth of the storage hole on the bolster. a bottomed cylindrical case having a length and an open upper part; a cylindrical outer surface slidingly contacting the inner surface of the bottomed cylindrical case; and a semi-concave spherical seat formed at the upper part; A plurality of cylindrical spring accommodating chambers are formed in the lower part, the lower ends of which are open and extend parallel to the axial direction of the bottomed cylindrical case, and are spaced apart from each other in the horizontal direction, and are fitted into the bottomed cylindrical case. a ball support member capable of vertically reciprocating a predetermined distance; and a ball support member rotatably mounted on a seat portion of the ball support member via a large number of small balls, and the ball support member is in an upward movement position. a main ball whose vertical position relative to the ball support member is set such that the top protrudes from the top surface of the bolster and the top portion retracts from the top surface of the bolster when the ball support member is in a downward movement position; It is removably attached to the upper open part of the bottom cylindrical case to form the upper surface of the bottomed cylindrical case, and also to regulate the upper moving end of the ball support member, and to connect the top of the main ball to the bottomed cylindrical case. an outer lid having a window that can protrude from the upper surface of the shaped case; A mold support for setting a press mold, comprising: a plurality of compression coil springs loaded so as to come into elastic contact with the bottom surface of a shaped case;