JPH0543940Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a press mold for tool boxes, and in particular, even if the size of the tool box varies depending on the product type, it is possible to use a common compatible press. The tool box's wall surface can be decorated with an interesting concave-convex pattern exterior design using a processed mold, and it has been improved to effectively strengthen the wall surface while using a metal plate that is as thin as possible. .

<Conventional technology and its problems> In general, metal tool boxes with portable handles, especially those with deep box bodies, are formed from a metal plate in one seamless process by drawing with a press die. difficult to do. Furthermore, while using a thin metal plate, it is impossible to decorate the wall surface of the box body with an uneven pattern to create an interesting and varied exterior design, and the deeper the wall, the thicker the wall. Forced to use metal plates. This is because the portion of the lid and the uneven pattern is distorted and deformed during deep drawing, resulting in breakage and wrinkles at that portion.

Therefore, especially for boxes with deep boxes, a metal plate is first bent using a press die to form a U-shaped cross section consisting of a pair of left and right side walls and a bottom wall, and then both opening ends in the longitudinal direction are bent. In order to cover the box, it is customary to finish the box body by spot welding the front and rear walls of separate metal plates, but this method has a disadvantage in comparison to the one-piece molded product using the drawing process described above. Since the rigidity and strength will decrease, it is necessary to use a thick metal plate to compensate for this. As a result, the weight increases and the manufacturing cost increases.

Furthermore, unlike the case of deep drawing, it is possible to add an uneven pattern to the wall surface of the box body by bending a metal plate, and the pattern can add interest to the exterior design. However, the size of the box body (depth, opening width, length, etc.) varies depending on the type of box, so the bending mold that should give the box a concave-convex pattern is designed in advance to accommodate the changes. This fact has become a bottleneck in producing small to medium quantities of a wide variety of products.

<Means for solving the problem> The present invention is intended to solve the above problem, and for this purpose, the wall of the box body has many outward protrusions for decoration and reinforcement. The pressing mold for applying the punch consists of an upper mold and a lower mold, and a large number of integrated punches are arranged and installed on the processing surface of the upper mold to have an area that fits the wall surface of the smallest size product in the box body. By detachably attaching and fixing a large number of separate punches around the occupied area, and attaching and detaching the necessary number of separate punches, a large number of separate punches can be attached to the wall surface according to the size change of the box body. It is characterized by being set so that outward protrusions can be processed.

<Example> Hereinafter, the specific structure of the present invention will be described in detail based on the illustrated example. Figures 1 to 4 show an example of the target tool box, and 10 is a relatively deep box body. It is a general term for a pair of left and right side walls 11 and a bottom wall 1.
2. The front wall 13 and the rear wall 14 form a rectangular parallelepiped with an upward opening.

Reference numeral 15 denotes a large number of protrusions that are processed to project outward on the entire surface of both side walls 11 of the box body 10, thereby giving the box body 10 an uneven pattern in its external design. At the same time, the rigidity of the box body 10 can be reinforced even though the metal plate M is as thin as possible. In this regard, in the illustrated example, the large number of outward protrusions 15
They are scattered in the form of rectangular protrusions, and are arranged in parallel along the longitudinal and lateral directions of the side wall 11 in a so-called overall tiled state.

Reference numeral 16 denotes a pair of left and right small boxes that open and close the upper opening of the box body 10, and 17 denotes a pair of left and right carrying handles, each of which is bent into an inverted U-shape when viewed from the side, and its lower end serves as a pair of front and rear link pieces 18 that pivotally connect the small box 16 to the box body 10. Reference numeral 19 denotes a pair of front and rear parallel link pieces that are parallel to the outer positions of the link pieces 18 and also pivotally connect the small box 16 to the box body 10, and 20 denotes each of the small boxes 16.
The lower end of the cover is pivotally attached to the small box 16.

Reference numeral 21 denotes a pair of front and rear link pieces that pivotally connect the opening/closing lid 20 and the handle 17. Therefore, when both handles 17 are pushed open, the small boxes 16 move in opposite lateral directions. , box body 10
As soon as the upper opening of the box was exposed, the small box 1
The opening/closing lid 20 of No. 6 also rotates upward. Conversely, when both handles 17 are closed, the small box 16 is covered by the opening/closing lid 20, and the box body 10 is also covered by the small box 16.

In other words, although the illustrated example shows a double-opening tool box with a small box 16, the present invention can be widely applied to various tool boxes other than those shown, as long as they are equipped with the box body 10, its upper opening opening/closing lid, and the carrying handle 17. can do.

As is clear from the processing order shown in FIG. A large number of outward protrusions 15 are intensively processed, and then the metal plate M is bent at right angles from the imaginary parallel line a to form a U-shaped cross section in which both side walls 11 and bottom wall 12 are continuous. It is formed into

Then, in order to close both ends of the opening along the longitudinal direction of the U-shaped cross section, a front wall 13 and a rear wall 14 of separate metal plates are fitted and overlapped at both ends, and the overlapped parts are spot welded. As a result, the rectangular parallelepiped having a certain depth D, length L, and opening width W is finished.

5 to 8 show a press mold for decorating both side walls 11 with the outward protrusions 15, and a large number of the protrusions 15 should be provided on the processed surface of the upper mold (male mold) A. An integral punch 22 is correspondingly arranged in a protruding manner. In that case, since the size of the box body 10 differs depending on the type of product to be obtained, the integrated punch 22 is attached to the side walls of the smallest size product.
A large number of them are arranged and arranged in a concentrated manner, occupying an area suitable for 1.

That is, in FIG. 8 showing the machining surface of the upper die A, the occupied area of the integral punches 22 that protrude in large numbers coincides with the side wall 11 of the box body 10, and one side of the occupied area is x, and this If we assume that the other orthogonal side is y, that side x is the box body 1
The other side y is dimensioned to correspond to a constant depth D of 0, and the other side y also corresponds to a constant length L of the box body 10.

23 is also the embedded bolt 2 on the machined surface of the upper die A.
4, etc., which are removably planted and fixed, but if the box body 10 is to be obtained as a large-sized product, the depth D and length described above must be adjusted accordingly. In order to extend L, the integral punches 22 are arranged in an array around the protruding occupied area as shown by chain lines in FIG.

In other words, by freely attaching and using the separate punch 23, one side x and the other side y of the occupied area can be extended to a large size by the necessary amount. You will be able to obtain it without any problems. Conversely, it is also possible to remove the separate punch 23 and use only the integrated punch 22 to form the box body 10 of the minimum size as shown in FIG.

In addition, in the illustrated example, the separate punch 23 is replaced by the integrated punch 22.
When arranging it to the surrounding position, it is arranged as if the entire L
They are arranged in a line shaped like a letter,
It is also possible to arrange them in double rows all around the integral punch 22. In addition, since the metal plate M used as the material is cut to a predetermined size according to the size of the box body 10, the opening width W also changes automatically according to the change in the depth D. Therefore, the dimensions are determined to be constant.

In any case, as shown in FIGS. 5 and 6, the processing surface of the lower die (female die) B has a large number of grooves 25 for receiving the integral punch 22 and the separate punch 23 in advance. Needless to say, it is open. As mentioned above, the metal plate M on which the protrusions 15 have been processed is then bent into a U-shaped cross section. Since it is entirely protruded outward, during the subsequent bending process into a U-shaped cross section, a separate upper mold for the bending process can be inserted and removed without any trouble.

First, the outward protrusion 15 of the side walls 11 and the two types of punches 22 and 23 for machining it are shown arranged and installed in a rectangular outline shape, and the separate punches are also shown. 23, a configuration in which both the depth D and the length L can be extended has been described, but it is also possible to adopt modifications as shown in FIGS. 10 to 15 instead.

That is, the outward protrusion 15 and the integrated punch 22 for processing it are defined as a track running in the lateral direction of the box body 10, and the separate punch 23 is also set as a track with a T-shaped cross section to form a dovetail for receiving the upper mold A. It is installed and fixed in a groove 26 so that it can be freely inserted and removed, and the separate punch 23 is configured to accommodate dimensional changes in the depth D in the box body 10, as suggested by the comparison between FIGS. 10 and 15. You may do so. It is also conceivable that the outward protrusion 15 be in the form of a rail running in the vertical direction of the box body 10 to accommodate changes in the length L of the box body 10 by inserting and removing the separate punch 23.

Furthermore, the outward protrusions 15 can also be provided on the bottom wall 12 of the box body 10, and their scattered outline shape is not limited to the rectangular shape reminiscent of the above-mentioned tiles, but may also be diamond-shaped or circular, oval, star-shaped,
Various other shapes can be freely adopted. The rest of the configuration is substantially the same as the basic example shown in Figures 1 to 9, so we will only write the corresponding symbols in Figures 10 to 15 and explain the details. The explanation will be omitted.

<Effects of the invention> As described above, in the present invention, upper mold A and lower mold B are used as press working molds that provide a large number of outward protrusions 15 for decoration and reinforcement on the wall surface of the box main body 10.
A large number of integrated punches 22 are arranged and installed on the processing surface of the upper die A to occupy an area that fits the wall surface of the smallest size product in the box body 10, and a large number of integral punches 22 are arranged and installed at the peripheral positions of the occupied area. By detachably attaching and fixing the separate punches 23 and attaching and detaching the required number of separate punches 23, a large number of outward protrusions 15 are formed on the wall surface according to the size change of the box body 10. By using the press mold, tool boxes can be manufactured properly at all times regardless of changes in size, and the problems of the conventional technology mentioned at the beginning can be avoided. It has the effect of eliminating the

Furthermore, by using the integrated punch 22 and the separate punch 23, a large number of outward protrusions 15 are applied to the wall surface of the box body 10 in the form of protrusions or rails. 15 allows you to decorate the wall surface with an interesting uneven pattern exterior design,
Moreover, it is possible to increase the strength of the box body 10 while using the thinnest metal plate M possible, and it can be said to be an extremely useful device for producing a wide variety of products in small to medium quantities.

[Brief explanation of the drawing]

Figures 1 to 9 relate to the basic embodiment of the present invention, in which Figure 1 is a slope view of the tool box, Figure 2 is a cross-sectional front view, and Figure 3 is a section taken along line 3-3 in Figure 2. Cross-sectional view, Figure 4 () () () is an explanatory diagram showing the manufacturing process of the box body, Figure 5 is a cross-sectional view of the press mold, and Figure 6 is a state in which a separate punch is attached to the upper mold. , Figure 7 is a slope view showing a separate punch, Figure 8 is a plan view showing the machining surface of the upper die, and Figure 9 is a slope view of a large tool box in comparison with Figure 1. Figures 10 to 15 relate to modified embodiments of the present invention, of which Figure 10 is a perspective view of another tool box, and Figure 11 is a perspective view of another tool box.
The figure is a cross-sectional view of the press mold, Figure 12 is a cross-sectional view of the upper mold with a separate punch attached, and Figure 13 is a cross-sectional view of the press mold.
14 is a plan view showing the machining surface of the upper mold, and FIG. 15 is a slope view of the large tool box shown in comparison with FIG. 10. 10...Box body, 11...Side wall, 12...Bottom wall, 13...Front wall, 14...Rear wall, 15...Protrusion, 16...Small box, 17...Mobile handle, 22
...One punch, 23...Separate punch, 24...
Bolt, A...upper die, B...lower die, D...depth,
L...Length, W...Opening width, x...Side, y...
Other side.

Claims (1)

[Claims for Utility Model Registration] 1. A press-working mold for providing a large number of outward protrusions 15 for decoration and reinforcement on the wall surface of the box body 10, consisting of an upper mold A and a lower mold B, A large number of integral punches 22 are arranged and installed on the processing surface of the upper mold A to have an occupied area that fits the wall surface of the smallest size product in the box body 10, and a large number of separate punches 23 are arranged at peripheral positions of the occupied area. By attaching and fixing the punches 23 in a detachable manner and attaching and detaching the necessary number of separate punches 23, it is possible to process and impart a large number of outward protrusions 15 to the wall surface in response to changes in the size of the box body 10. A tool box press mold that is characterized by the following settings. 2 Two types of punches 2 to which outward protrusions 15 should be provided
A press-working mold for a tool box according to claim 1 of the registered utility model claim, characterized in that 2 and 23 are set in the form of interspersed convex elements. 3 Two types of punches 2 that should have outward protrusions 15
2 and 23 are set in the form of rails running in the vertical or horizontal direction of the box body 10. The press-working mold for a tool box according to claim 1 of the registered utility model claim.