JPH04104219U - Drawing die for plate material - Google Patents

Abstract

(57) [Summary] [Purpose] To enable drawing of the flange portion of the hole 19 of the plate material 18 only on one side of the structure. [Structure] When a guide member 5 having a tapered surface 4 attached to a rod 2 reciprocated by a drive mechanism 1 moves forward, a male die 9 having an inclined inner wall 10 along the tapered surface 4 contracts. The rod 2 passes through the hole 19 of the plate 18, and then the hole 19 is flanged between the male die 9 and the female die 15 by the backward movement of the rod 2.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is suitable for drilling holes in steel plates, aluminum alloy plates, stainless steel plates, etc. After punching, the flange of these plates can be drawn on only one side. This invention relates to a drawing die for plate material configured to

0002

[Conventional technology]

For example, tightening work on tank bottom valves of tank lorries, body plates of manhole attachment parts, etc. Conventional methods are used when entering the inside of a tank structure or when it is difficult to enter. As shown in Fig. 7, the male die a and the female die b of the drawing die are constructed separately, and the female die b is first Set the male mold a into the hole d from the outside of the plate c of the structure, and bring the male mold a into the inside of the structure. Then, insert the rod f of the hydraulic cylinder e protruding from the female mold b into the male mold a. By screwing the nut h into the male thread g formed at the end of the rod f, After fixing the male mold a to the rod f, the male mold a is connected to the hydraulic cylinder via the rod f. By the operation of the holder e, the male mold a and the female mold b are separated by drawing them toward the female mold b. The flange portion of plate material c was being drawn between the two.

0003

[Problem that the idea aims to solve]

The conventional work format described above has the following problems that need to be resolved. It had been. That is, Work cannot be done on only one side of the structure (especially the outside), so work cannot be done inside the structure. It was impossible or difficult to work in cases where there was no access or access was difficult. When drawing the flange of a large-diameter hole, a large and heavy male die must be carried and set. Not only was it labor-intensive, but it was also dangerous.

0004

[Means to solve the problem]

In order to eliminate the above-mentioned problems, this idea is based on a robot that is reciprocated by a drive mechanism. It has a catch attached to the tip of the handle and a tapered surface that widens toward the catch. The guide member has an inclined inner wall along the tapered surface of the guide member, and has an inclined inner wall along the tapered surface of the guide member. Consists of several divided structural members and an elastic member that converges these structural members. The diameter of the male type is reduced as the guide member moves forward when the drive mechanism moves forward, and the diameter is reduced as the guide member moves forward. When the male mold is received in the catch seat beyond the drilled hole, and when the drive mechanism returns, A drawing die for plate material is proposed, which is composed of a female die facing the plate material and sandwiching the plate material. It is.

[0005]

[Effect]

According to the drawing die of this invention having the above-mentioned structure, the male die is divided into several parts in the radial direction. is reduced in diameter along the tapered surface of the guide member by the forward movement of the rod of the drive mechanism, After passing through the hole in the plate material where the flange part is to be drawn, the drive mechanism is restored. With the movement, the male mold is expanded by the tapered surface of the guide member, and the gap between it and the female mold is expanded. The flange portion is drawn by sandwiching the edge of the hole in the plate material.

[0006]

【Example】

1 and 2, 1 is a hydraulic cylinder as a drive mechanism, and this hydraulic cylinder A catch seat 3 is formed at the tip of the rod 2 which is driven by the handler 1 to reciprocate. A guide member 5 having a tapered surface 4 that expands toward the receiving seat 3 is attached. It is being

[0007] On the other hand, each constituent member 6a, 6b divided into several parts in the radial direction (eight parts in the illustrated embodiment), . . 6h is converged by springs 7 and 8 as elastic members to form a male mold 9. has an inclined inner wall 10 along the tapered surface 4, and the structural members 6a to 6h are The outward expansion is controlled by a crown-like body 12 that engages with a groove 11 formed near the top of these. limited. The springs 7 and 8 are also formed in two stages on each component 6a to 6h. It shall be engaged with the recesses 13 and 14. In addition, in the state of Figures 1 and 2, the In this case, the respective constituent members 6a to 6h are kept apart from each other. The female mold 15 has a molding part 17 that cooperates with the molding part 16 formed on the outer surface of the male mold 9, and has a molding part 17 formed on the outer surface of the male mold 9. It is fixed to the hydraulic cylinder 1 in a form that surrounds the tube 2.

[0008] In the drawing die of this invention having the above-mentioned configuration, first of all, as shown in the above-mentioned FIG. Both the male mold 9 and the female mold 15 are on one side (actually on the outside) of the plate 18 of the structure, It is located opposite the hole 19 provided by the punching operation already carried out.

[0009] Next, when the rod 2 is moved forward by the hydraulic cylinder 1, the guide member 5 is moved forward. As each component 6a moves forward, it has an inclined inner wall 10 along its tapered surface 4. The interval 6h is narrowed, that is, the outer diameter of the male die 9 is reduced, and the outer diameter of the male die 9 is reduced by the hole 19. As it becomes smaller, it becomes possible to pass through this hole 19 and move to the opposite side. In this case When the work is performed by moving the rod downward, the male mold 9 will fall under its own weight. It will be lowered and caught by catch seat 3. This is from Figure 3 to Figure 4 of male type 9. It indicates movement.

0010 In such a situation, if the rod 2 is moved back by the hydraulic cylinder 1, the current As the guide member 5 is displaced, the male die 9 is expanded in diameter by its tapered surface 4. , between the molding part 17 of the female mold 15 and the molding part 16 of the male mold 9, the edge of the hole 19 of the plate material 18 is The section is folded as shown in FIG. In this way, the flange part is narrowed. FIG. 6 shows the state of the processed plate material 18.

[0011]

[Effect of the idea]

By using the drawing die of this invention having the above-mentioned configuration, the following can be achieved. This provides many practical effects. That is, Holes in the plate can be drilled on only one side (especially the outside) of the structure, so Work can be easily carried out in cases where it is difficult or difficult to get inside the . Since there is no need to carry and set the male mold, drawing work can be done safely and efficiently. It is possible to become

[Brief explanation of drawings]

FIG. 1 is a diagram of a drawing die and its surrounding parts.

FIG. 2 is a cross-sectional view taken along line AA in FIG. 1;

FIG. 3 is a sectional view of each part of the drawing die just before the male die passes through the hole in the plate material.

FIG. 4 is a sectional view of each part of the drawing die after the male die has passed through the hole in the plate material.

FIG. 5 is a sectional view showing a state in which a drawing operation is being performed between a male mold and a female mold.

FIG. 6 is a perspective view of a portion of the plate material on which the flange portion has been drawn.

FIG. 7 is a layout diagram of a conventional example.

[Explanation of symbols]

1 Hydraulic cylinder (drive mechanism) 2 Rods 3 catch seat 4 Taper part 5 Guide member 6a to 6h Components 7,8 Spring (elastic member) 9 Male type 10 Slanted inner wall 15 female type 18 Board material 19 holes

Claims (1)

[Scope of utility model registration request] Claims 1: A seat attached to the tip of a rod that is reciprocated by a drive mechanism, a guide member having a tapered surface that widens toward the seat, and a tapered surface of the guide member. a male mold which has an inclined inner wall along the radial direction and is composed of a component member divided into several parts in the radial direction, and an elastic member that converges these component members; The aperture of a plate material is made up of the male mold whose diameter is reduced accordingly and is received by the catch seat beyond a hole provided in the plate material, and the female mold which faces each other by sandwiching the plate material during the return movement of the drive mechanism. Type.