JPH0222092Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The disclosed technology belongs to the field of structural technology for suspension side pins that suspend and support the upper mold, pad, etc., provided on the inner surface of the upper mold of a press machine. .

Therefore, in this invention, a plurality of rods are attached to the side of the support to suspend and support the supported object, and a locking part is formed at the base to be engaged near a hole drilled in the side of the support. A fitting part with a circular cross section is formed in the center part to be fitted into a hole drilled in the support body, and a hanging part with a circular cross section which suspends and supports the supported body is formed in the tip part. This invention relates to a side pin for hanging a press device in which a side pin is formed, and in particular, a side pin for hanging a press device in which the axis of the hanging part is eccentric with respect to the axis of the fitting part. This is an idea related to side pins.

<Prior art> As is well known, press processing is extremely widely used in the manufacturing process of various products used in daily life such as automobiles and construction materials, and press machines are also used to improve the productivity of these products. Many devices have been devised with various improvements to each part.

Conventionally, when performing bending forming on metal plate materials, etc., a press device 1 as shown in FIGS. 4 to 9 has been used. The upper molds 3, 3' are formed to move up and down, and when the upper molds 3, 3' rise, the lower molds 2, 3' move up and down.
A workpiece 4 is placed on the upper die 2', and the upper molds 3, 3' urged by the ram are lowered, thereby bending the workpiece 4 by press working.

Further, the upper mold 3' is fitted into the concave portion 5 on the lower surface of the upper mold 3, has an elastic body 6 such as urethane rubber fixed on the upper part, and has engagement grooves 7 on both sides that contact the upper mold 3. ... is formed, and the upper mold 3 has holes 8 ... bored on both sides, and hanging side pins 9 ... are inserted and fitted into the holes 8 .... By engaging the tips of the pins 9 with the engagement grooves 7 of the upper die 3', the upper die 3' is made slidable relative to the upper die 3 and the engagement grooves 7 are engaged with each other. The workpiece 4 is suspended and supported by the upper die 3 by the end of the groove 7, and is bent and formed along the shape of the upper die 3 and 3'.
It is brushed off from the upper die 3 by the elastic force of the elastic body 6.

Furthermore, the hanging side pin 9 is formed in a cylindrical shape, and has a locking portion 10 that is locked to the upper mold 3.
is formed at the base, and a fitting part 11 is formed at the center to fit into the hole 8 drilled in the upper die 3, and further engages the upper end of the engagement groove 7 of the upper die 3'. A hanging portion 12 having an axis aligned with the fitting portion 11 is formed at the tip.

<Problems to be solved by the invention> However, in the conventional press apparatus 1 described above, the upper molds 3, 3' rise and the upper molds 3'
When the upper die 3 is suspended, the holes 8 formed on both sides of the upper die 3...relative error in hole position between each other, the engagement grooves 7 formed on both sides of the upper die 3'...relative error in groove position between each other, Suspension side pins 9...Gaps are formed due to various errors such as mutual pin diameter relative errors, and among these several suspension side pins 9, the suspension portion 12 of the pin 9 is not engaged with the upper mold 3'. There is a part that does not touch the upper end of the matching groove 7,
Accordingly, a large load will be applied to the hanging side pin 9 that comes into contact with the upper end of the engagement groove 7.
In order to deal with this, it is a hassle to once assemble the press device 1, measure the gap between the end of the engagement groove 7 and the hanging side pin 9, remove it again, and reduce the diameter of the side pin 9. The disadvantage was that adjustment work that required many steps had to be carried out.

In addition, although the above-mentioned adjustment work requires a large number of steps including assembling, removing and cutting the hanging side pins 9, the end of the engagement groove 7 of the upper die 3' However, there was a problem in that it was extremely difficult to make the gap between the hanging side pin 9 and the hanging part close to zero.

The purpose of this invention is to solve the technical problem of the hanging side pins of the press machine based on the above-mentioned conventional technology, and when a supported body is suspended from a support body by a plurality of hanging side pins, The gap formed by the side pins and the supported body due to various relative errors can be eliminated by a simple operation, reducing press mold production time and improving work efficiency, thereby improving the manufacturing industry. It is an object of the present invention to provide an excellent side pin for hanging a press machine that is useful in the field of error adjustment technology used in the industry.

<Means/effects for solving the problem> In order to solve the above-mentioned problem, the structure of this invention, which is based on the above-mentioned claims for utility model registration, is based on the above-mentioned purpose. For a side pin for suspension of a press device that suspends and supports a support, a locking part that is engaged with the support has a circular cross section that fits into a hole drilled in the side of the support. A fitting part is formed in the center part, and a hanging part with a circular cross section for suspending and supporting the supported body is formed in the tip part, and further, the axis of the hanging part is arranged relative to the axis of the fitting part. The gap formed between the side pin and the supported body due to various errors between the side pins, which are formed eccentrically, can be eliminated by simply rotating the side pin. This was achieved by taking technical measures to

<Embodiment - Configuration> Next, one embodiment of this invention will be described below based on FIGS. 1 to 3 and FIGS. 6 and 8.

Note that the same parts as those in the conventional mode shown in FIGS. 4 to 9 will be described with the same reference numerals.

9 is a side pin for hanging, and press device 1'
The press device 1' has upper molds 3, 3' connected to a ram (not shown) above the lower molds 2, 2' on which the workpiece 4 is placed, and the lower mold 2 has a convex shape. The lower mold 2' is supported by support rods 13, 13 in which springs (not shown) are inserted, and the upper mold 3 is formed in a concave shape.
An elastic body 6 such as urethane rubber is fixed on the upper part,
It is inserted into the recessed part 5 of the upper mold 3.

Further, holes 8 are bored on both sides of the upper die 3,
Engagement grooves 7 are formed on both sides of the upper mold 3', and the hanging side pins 9 are inserted and fitted into the holes 8, and the tips of the side pins 9 passing through the holes 8 supports the upper end of the engagement groove 7, and the upper mold 3' is suspended from the upper mold 3.

Furthermore, as shown in FIGS. 2 and 3, an engaging part 10 having a reduced diameter part 13 is formed at the base of the hanging side pin 9', and a fitting part 11 having a circular cross section is formed in the center part. is formed, and a hanging part 12' having a circular cross section is formed eccentrically with respect to the axis of the fitting part 11 at the tip, and the engaging part 10 is connected to the upper part by a screw 14. The reduced diameter portion 13 is held in a concave portion of a side pin lock plate 15 fixed to the mold 3,
Furthermore, it is welded to the side lock plate 15 and fixed to the upper mold 3.

<Embodiment - Effect> In the above-described configuration, when the upper molds 3 and 3' are raised, the lower mold 2' is moved by the convexity of the lower mold 2 due to the elastic force of the springs (not shown) interposed in the support rods 13 and 13. On the other hand, the upper mold 3' is suspended from the upper mold 3 by being supported by the end suspension part 12' of the suspension side pin 9'.

At this time, when the work 4 is placed on the upper surface of the lower molds 2 and 2' and the upper molds 3 and 3' are lowered by a ram (not shown), the lower mold 2' is lowered and lowered. Supported by the mold 2 surface, the upper mold 3' rises and the upper mold 3
The workpiece 4 is supported on the lower surface and is bent into a predetermined shape by the cooperation of the lower molds 2, 2' and the upper molds 3, 3'.

Furthermore, when the upper molds 3 and 3' rise, the lower mold 2' rises in the same manner as described above, while the upper mold 3' is lowered by the elastic body 6 fixed to the upper part of the upper mold 3. The molded work piece attached to the upper molds 3, 3' is brushed off.

In addition, when attaching the upper mold 3' to the upper mold 3, which is a preparatory stage for operating the press device 1', the hanging side pins 9 are inserted into the holes 8 formed on both sides of the upper mold 3.
The upper mold 3 is suspended by inserting the pin 9 into the hole 8 and fitting the fitting part 11 of the pin 9 into the hole 8 so that the hanging part 12 of the pin 9 supports the upper end of the groove 7 of the upper mold 3'. do.

Furthermore, due to various errors between the pins 9 and the holes 8, several pins often do not come into contact with the upper end of the groove 7 of the upper mold 3', forming a gap. By rotating the hanging side pin 9, the part where the hanging part 12 comes into contact with the upper end of the groove 7 is found, and in this state, the hanging side pin 9 is rotated by the side lock plate 15 and the screw 14. The locking portion 10 of the pin 9 is locked.

Also, by rotating the hanging side pin 9 as described above, the hanging part 12 of the pin 9 can be attached to the upper mold 3.
The reason why the portion that contacts the groove 7 is found is that the distance of the points on the outer periphery of the hanging portion 12 from the axis of the fitting portion 11 is not constant, and the distance changes continuously.

<Other Examples> It goes without saying that the embodiments of this invention are not limited to the above-mentioned embodiments, and the press device may be used for various purposes such as drawing, outline punching, hole punching, etc. Aspects can be adopted.

<Effects of the invention> As described above, according to this invention, when a supported object is suspended from a supporting body using a plurality of hanging side pins, the support body does not come into contact with the supported object and is connected to the supported object. This eliminates the need for hanging side pins that create voids, which has the excellent effect of shortening press mold manufacturing time and improving work efficiency.

That is, the axis of the hanging part with a circular cross section that suspends and supports the supported object is eccentrically formed with respect to the axis of the fitting part with a circular cross section that fits into a hole bored in the side of the support body. As a result, the gap between the hanging part of the hanging side pin and the supported object can be eliminated by simply rotating the fitting part about its axis, making it easy to adjust the gap. Excellent effects can be achieved.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams of an embodiment of this invention, in which FIG. 1 is a sectional view, FIG. 2 is a front view, and FIG. 3 is a side view, and FIGS. FIG. 4 is a front view, FIG. 5 is a side view, and FIGS. 6 to 9 are sectional views. 3'... Supported body, 3... Support body, 10... Locking part, 8... Hole, 11... Fitting part, 12'... Hanging part, 9... Hanging side of press device pin.

Claims (1)

[Scope of utility model registration request] A plurality of rods are used to suspend and support a supported object, and a locking portion that is engaged with the support is formed at the base, and a fitting with a circular cross section that fits into a hole drilled in the side of the support is formed at the center. In a side pin for suspension of a press device, in which a fitting part is formed and a hanging part with a circular cross section is formed at the tip to suspend and support the supported object, the axis of the hanging part is aligned with the fitting part. A side pin for hanging a press machine, characterized by being formed eccentrically with respect to an axis.