JPH0634823U - Upper die mounting jig for press machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a jig capable of efficiently performing work for mounting an upper die in a press machine. [Structure] The upper mold 4 is placed concentrically on the upper surface of the upper mold support portion 34. In this state, the jig is inserted between the upper and lower support members 2 and 1 in the pressing device. Then, the cylindrical portion 21 provided in the cylinder body 20 is fitted into the through hole 12 a of the lower die holder 12. Thereby, the upper die 4 can be positioned. Then, the air pressure inside the cylinder body 20 is increased to extend the rod 30 upward, and the upper die 4 is brought into contact with the lower surface of the upper die support member 2. In this state, both are fixed with bolts.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a jig for mounting an upper die in a press machine, and more particularly to a jig for mounting an upper die which is useful in a so-called cupping press machine which punches a plate material and performs deep drawing.

[0002]

[Prior art]

 First, an outline of a conventionally used cupping press device will be described with reference to FIG. This pressing apparatus includes a lower die support member 1 fixed to the apparatus main body, an upper die support member 2 arranged above the lower die support member 1 and moved up and down by a ram (not shown), and a lower die. A lower die 3 attached to the upper surface of the support member 1, an upper die 4 attached to the lower surface of the upper die support member 2 at a position facing the lower die 3, and moves up and down through the respective members. It is mainly composed of a cylindrical die center (not shown).

The lower die support member 1 includes a bottom die shoe 11 fixed to the apparatus main body, and a lower die holder 12 fixed to the upper surface of the bottom die shoe 11. The bottom die shoe 11 and the lower die holder 12 are concentrically formed with through holes 11a and 12a having a circular cross section for dropping a punched molded product. A notch 12b is formed on the upper surface of the lower die holder 12 along the periphery of the through hole 12a. The lower part of the lower mold 3 is housed in the notch 12b.

Although not particularly shown, the upper die supporting member 2 is provided with an air pressure cylinder mechanism for holding a wrinkle during deep drawing, and a through hole having a circular cross section through which a die center is inserted into the cylinder mechanism. 2a is formed concentrically with the through hole 12a. Similarly, the upper die 4 and the lower die 3 are also concentrically formed with through holes (not shown) through which the die centers are inserted.

In the pressing device having the above-mentioned configuration, a thin metal plate material is fed between the upper die 4 and the lower die 3, and the upper die support member 2 is lowered by the ram to lower the upper die 4 and the lower die 3. The plate material is punched into a disk shape by using, and then the die center is lowered, the center part of the punched plate material is pushed down and drawn, and the obtained molded product is dropped from the through holes 12a and 11a. In such a conventional press machine, since a thin plate material is used as a processing material, the space between the upper die 4 and the lower die at the top dead center position is set to be small, which enables efficient press operation. You can do it.

By the way, in the above-mentioned press machine, the upper die 4 and the lower die 3 may be removed and then reattached for replacement or adjustment due to wear. In this mounting operation, first, the upper die 4 is inserted between the upper and lower support members 1 and 2 and the upper die 4 is lifted up, and the upper die support member 2 is visually positioned at a predetermined position. After the upper die 4 is fixed to the lower surface of the die support member 2 with bolts, the lower die 3 is inserted into the remaining space to fix the lower die 3 to the upper surface of the lower die holder 12. However, the above-mentioned upper mold 4 itself has a considerable weight, and the work of lifting and positioning the upper mold 4 and attaching it to the upper mold supporting member 2 is not a very difficult work. There was a problem that I had no choice.

[0007]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a jig that can efficiently perform an upper die mounting operation in a press machine.

[0008]

[Means for Solving the Problems]

 The upper die mounting jig according to claim 1 comprises a cylinder body, and a rod housed inside the cylinder body and extended toward one side by fluid pressure inside the cylinder body. On the other side of the cylinder body, a through hole formed in the lower die supporting member or a convex portion to be housed in a concave portion is formed, and an upper die supporting portion for supporting the upper die is provided at the tip of the rod. .

According to a second aspect of the present invention, there is provided an upper die attaching jig according to the first aspect, wherein the rod is a telescope type.

An upper die mounting jig according to a third aspect is the upper die mounting jig according to the first or second aspect, wherein the upper die supporting portion is attached to the rod so as to be rotatable about an axis. It is a thing.

An upper die mounting jig according to a fourth aspect is the upper die mounting jig according to the third aspect, wherein the rod and the upper die supporting portion are formed on an internal thread formed on one side and on the other side. It is mounted so that it can be relatively rotated around the axis by screwing with a male screw.

[0012]

[Action]

 The jig in the contracted state is inserted between the upper and lower support members in the pressing device, and the convex portion provided on the cylinder body is fitted into the through hole or the concave portion of the lower die supporting member. Then, the upper die is placed on the upper die supporting portion. This allows the upper die to be positioned. Then, the fluid pressure of the cylinder body can be manipulated to extend the rod and raise the upper die to attach it to the upper die support member. After the installation work is completed, retract the rod and remove the jig from the press.

[0013]

【Example】

 An upper die mounting jig according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. This jig is a cylinder body 20 having a substantially cylindrical shape, and a telescope which is housed inside the cylinder body 20 and which is extended toward one side (upper side in the figure) by the fluid pressure inside the cylinder body 20. It is mainly composed of a scope type rod 30.

The cylinder body 20 is formed on a cylindrical portion (convex portion) 21 having an outer diameter slightly smaller than the inner diameter of the through hole 12 a of the lower die holder 12, and the outer periphery of the upper end of the cylindrical portion 21. It is composed of a flange portion 22, a flange portion 23 formed on the inner circumference of the upper end of the cylindrical portion 21, and a bottom plate 24 closing the bottom surface of the cylindrical portion 21.

The flange portion 22 and the cylindrical portion 21 are provided with a passage 25 for communicating the outer peripheral surface of the flange portion 22 with the inside of the cylindrical portion 21, and for introducing compressed air (fluid) into the inside of the cylindrical portion 21. Has been formed.

As shown in FIG. 1, the flange portion 22 is formed in a shape conforming to the inner surface shape of the cutout 12b formed in the lower die holder 12, and is housed inside the cutout 12b. Is configured to.

The telescope type rod 30 includes a substantially cylindrical first rod member 31 slidably fitted in an inner portion of the flange portion 23 of the cylinder body 20, and the first rod member 31. A substantially cylindrical second rod member 32 fitted inside, a disk-shaped spacer 33 fitted to the outer peripheral surface of the tip end portion of the first rod member 31 and an outer peripheral surface of the tip end portion of the second rod member 32. And a disc-shaped upper die support portion 34 fitted in the.

A flange portion 31 a that engages with the flange portion 23 of the cylinder body 20 is formed on the outer peripheral surface of the lower end of the first rod member 31. A concave portion along the circumferential direction is formed on the outer peripheral surface of the flange portion 31a, and a ring-shaped packing 31b which is in sliding contact with the inner peripheral surface of the cylinder body 20 is fitted in the concave portion. On the outer peripheral surface of the upper end portion of the first rod member 31, a male screw portion 31c to be screwed with a female screw portion 33a (described later) formed on the spacer 33 is formed. A flange portion 31d is provided on the inner peripheral surface of the upper end portion of the first rod member 31.

A through hole is formed in the center of the spacer 33, and the female screw portion 33a is formed in the through hole as described above.

A flange portion 32a that engages with the flange portion 31d of the first rod member 31 is formed on the outer peripheral surface of the lower end portion of the second rod member 32. The outer peripheral surface of the flange portion 32a has the first rod member 32a. A ring-shaped packing 32b that is in sliding contact with the inner peripheral surface of the member 31 is fitted. On the outer peripheral surface of the distal end portion of the second rod member 32, a male screw portion 32c that is screwed with a female screw portion 34a (described later) formed on the upper die supporting portion 34 is formed. The outer diameter of the second rod member 32 is smaller than the inner diameter of the through hole for inserting the die center, which is formed in the upper die 4.

A through hole is formed in the center of the upper die support portion 34, and a female screw portion 34a is formed in the through hole. As described above, the female screw portion 34a is screwed into the male screw portion 32c of the second rod member 32, whereby the upper die support portion 34 is attached to the rod 30 so as to be rotatable relative to the shaft. It has become a thing.

The height of the jig when the rod 30 is contracted is such that when the upper die supporting member 2 is at the top dead center position, the cylindrical portion 21 of the jig passes through the through hole of the lower die supporting member 1. The upper mold 4 can be placed on the upper part of the lower mold 12a when it is inserted, and after the upper mold 4 is attached to the upper mold supporting member 2, the jig is taken out from the lower mold supporting member 1. It is set to a height that allows it.

Next, a method of using the jig of the present example configured as described above will be described. First, the jig is taken out from the pressing device and the rod 30 is contracted (the state shown in FIG. 1). On the other hand, in the press machine, the upper die support member 2 is moved to the top dead center position.

Next, the jig is inserted between the upper die supporting member 2 and the lower die supporting member 1 of the pressing device, and the cylindrical portion 21 of the cylinder body 20 is inserted into the through hole 12 a of the lower die holder 12. At the same time, the flange portion 22 is fitted inside the notch 12b of the lower die holder 12. As a result, the axis of the through hole 12a can be aligned with the axis of the jig. Then, the upper die 4 is placed on the upper surface of the upper die supporting portion 34. Here, in the present example, the upper surface of the upper mold support portion 34 and the lower surface of the upper mold 4 are formed with concave and convex portions for positioning that are fitted to each other, so that they can be easily positioned.

According to the jig of this example, by placing the upper die 4 on the jig that has already been positioned with respect to the lower die supporting member 2, the upper die 4 is placed on the upper die supporting member 2. It has the advantage that it can be easily positioned.

Next, compressed air is blown into the inside of the cylinder body 20 through the passage 25, and the rod 30 is extended upward due to the increase in internal pressure due to this (see FIG. 2). By this operation, the upper surface of the upper die 4 can be brought close to the lower surface of the upper die support member 2 and the both can be fixed by a fixture such as a bolt. Conventionally, there was a problem that the workability was extremely poor because the work of mounting the upper mold 4, which is a heavy object, was manually performed in a narrow space. However, according to the jig of this example, The jig itself and the upper die 4 are positioned by using the recesses formed in the lower die supporting member 1, and the upper die 4 is attached close to the upper die supporting member 2 only by extending the rod 30 in this state. Therefore, there is an advantage that the installation work can be made significantly efficient.

Further, in the jig of this example, since the upper die support portion 34 is rotatably attached to the second rod member 32 about the axis, the upper die 4 can be rotated in the circumferential direction. Therefore, there is also an advantage that the fine position adjustment work of the upper die 4 in the circumferential direction can be easily and easily performed. At this time, since the upper end portion of the second rod member 32 is fitted inside the through hole formed in the upper die 4, there is no hindrance to the rotating work.

Further, in the jig of this example, since the upper die support portion 34 is screwed and attached to the second rod member 32, the heavy upper die 4 is placed on the upper die support portion 34. However, it has the advantage that it is not easily damaged and has high durability as a jig.

After the work of attaching the upper mold 4 is completed, the compressed air inside the cylinder body 20 is extracted from the passage 25, and the internal pressure thereof is reduced to contract the rod 30. Then, the cylindrical portion 21 of the cylinder body 20 is removed from the through hole 12a of the lower die holder 12 and taken out between the upper and lower support members 2 and 1. According to the jig of this example, since the telescope type rod is used as the rod 30, the height of the jig when contracted can be reduced, and the narrow space between the upper and lower support members 2 and 1 can be obtained. The jig can be easily taken out from. Therefore, the jig of this example can be particularly suitably used for a pressing device in which the space between the upper and lower support members 2 and 1 is set to be narrow, such as a cupping press device.

In the jig of this example, the upper die support portion 34 and the second rod member 32 are screwed together. Of course, it may be rotatably attached. Similarly, a bearing may be interposed between the spacer 33 and the first rod member 31 so that they can rotate freely.

Further, in the jig of this example, the upper die support portion 34 is separated from the second rod member 32 and both are rotatable, but the upper die support portion 34 supports the upper die. It may have any shape and structure as long as it can be formed. For example, a flange may be integrally formed on the outer peripheral surface of the upper end of the second rod member 32, and this flange may be used as the upper die supporting portion. In this case, the durability as a jig can be further improved.

Further, in the jig of this example, the through hole 12a is formed in the lower die supporting member 12, and the cylindrical portion 21 of the jig is inserted into the through hole 12a. It goes without saying that the other party to be inserted is not limited to the through hole and may be a simple recess.

[0033]

[Effect of device]

 The upper die mounting jig according to claim 1 comprises a cylinder body, and a rod housed inside the cylinder body and extended toward one side by fluid pressure inside the cylinder body. On the other side of the cylinder body, a through hole formed in the lower die supporting member or a convex portion to be housed in a concave portion is formed, and an upper die supporting portion for supporting the upper die is provided at the tip of the rod. Therefore, by extending the rod, it is possible to attach the upper die mounted on the upper die supporting portion to the upper die supporting member so as to approach the upper die. Therefore, the work of attaching the upper mold can be significantly improved.

In the upper die mounting jig according to claim 2, in the upper die mounting jig according to claim 1, since the rod is a telescope type, the height of the jig when the rod is contracted is reduced. Therefore, the jig can be easily inserted into and taken out from the narrow space between the upper and lower support members. Therefore, there is an effect that it can be used also in a press device in which the interval between the upper and lower support members is set to be narrow, such as a cupping press device.

An upper mold attaching jig according to a third aspect is the upper die attaching jig according to the first or second aspect, in which the upper die supporting portion is attached to the rod so as to be rotatable about an axis. Therefore, it is possible to easily adjust the position of the upper die and the upper die supporting member of the pressing device in the circumferential direction.

An upper die mounting jig according to a fourth aspect is the upper die mounting jig according to the third aspect, wherein the rod and the upper die supporting portion are formed with an internal thread formed on one side and the female thread formed on the other side. Since it is attached so that it can rotate relative to the axis by screwing it with a male screw, it is unlikely to be damaged even if the upper mold, which is a heavy object, is placed on top, and it has high durability as a jig. effective.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which an upper die mounting jig according to an embodiment of the present invention is attached to a press device, and is a diagram in which a rod is contracted.

FIG. 2 is a view showing a state in which a rod is extended in FIG.

FIG. 3 is a cross-sectional view of a main part showing an outline of a conventional cupping press device.

[Explanation of symbols]

1 Lower Die Support Member 2 Upper Die Support Member 3 Lower Die 4 Upper Die 12a Through Hole of Lower Die Holder (Through Hole Formed in Lower Die Support Member) 20 Cylinder Body 21 Cylinder (Convex) 30 Telescope Type Rod 32c Male screw portion formed on rod 34 Upper die support portion 34a Female thread portion formed on upper die support portion

Claims (4)

[Scope of utility model registration request] 1. A jig for mounting an upper die in a pressing apparatus, comprising: a lower die supporting member and an upper die supporting member that can be spaced apart from each other, and a through hole or a recess is formed in the lower die supporting member. A cylinder body and a rod housed inside the cylinder body and extended toward one side by fluid pressure inside the cylinder body, and the lower die is provided on the other side of the cylinder body. A through-hole or a recess formed in the support member is formed with a convex portion, and an upper die supporting portion for supporting the upper die is provided at a tip portion of the rod. Upper die mounting jig. 2. The jig for mounting an upper die in a press machine according to claim 1, wherein the rod is a telescope type. 3. The jig for mounting an upper die in a press device according to claim 1, wherein the upper die supporting portion is attached to the rod so as to be rotatable about an axis. 4. The rod and the upper die support portion are attached so as to be relatively rotatable about an axis by screwing a female screw formed on one side and a male screw formed on the other side. The upper die mounting jig in the press device according to claim 3.