KR20090008662A - Quick die change mold having high precision - Google Patents

Abstract

A quickly changeable mold having improved precision is provided to extend life of the mold by operating the mold in a state that positions of an upper mold and a lower mold are accurately arranged, thereby reducing wear of the mold. A quickly changeable mold having improved precision comprises an upper mold(140) and a lower mold(120). The lower mold includes a punch(124), a stripper(122) supported by a spring on a top part of the punch, and six posts(125) vertically projected through the stripper. The upper mold has six post holes formed in positions thereof corresponding to those of the six posts.

Description

Quick die change mold having high precision

The present invention relates to a press mold, and more particularly, to a quick change mold to reduce the play during the operation of the quick die change mold (extension) to extend the life of the mold and to improve the accuracy of the operation.

As is well known, the press mold system is generally equipped with a mold replacement system to replace the mold to be applied to various products. Among them, the quick die mold (QDC mold), which can quickly change molds, can literally reduce the time required for mold change, thereby improving work efficiency.

1 is a configuration diagram showing the structure of a conventional QDC mold system,

First, referring to FIG. 1, the upper mold 12 and the lower mold 14 are fixed to the QDC mold system 10, respectively, and the upper mold 12 and the lower mold 14 by the elevating device 17. This narrowing is intended to perform press work. In particular, the QDC mold system enables quick replacement of molds, and is provided with mold detachable handles 13 and 15, and can be quickly and easily manipulated and dismantled by adjusting the detachable handles 13 and 15. There is an advantage.

2 is a perspective view schematically showing a structure of a conventional lower mold used in a QDC mold system, and FIG. 3 is a perspective view schematically showing a structure of a conventional upper mold used in a QDC mold system.

Referring to FIG. 2, four posts 20 are formed at the corners of the lower mold 14. Referring to FIG. 3, the upper mold 12 is provided with a post hole 22 into which the post can be inserted at a position corresponding to the post 20.

Referring to the operation, the elevating device 17 is operated to perform press work while the upper mold 12 and the lower mold 14 are squeezed, wherein the post 20 provided in the lower mold 14 is It is inserted into the post hole 22 formed in the upper mold 12 and serves to align the position of the upper mold 12 and the lower mold 140. The QDC mold system is designed for quick exchange of molds, and is to compensate for the inferior positioning accuracy of upper and lower molds compared to general molds.

QDC mold system as described above has the advantage that the rapid replacement of the mold, while the position control as only four posts had a problem that the position of the upper mold and the lower mold is not precisely controlled. Therefore, in the repetitive work, the mold was damaged more and the mold life was shorter than the general mold. In addition, there is a concern that the mold may be damaged due to inadvertent setting of the mold, and it is difficult to apply to products requiring high precision.

Therefore, there is a need for improvement.

The present invention has been made to improve the above problems, increase the number of posts to align the position of the mold and arrange the posts in the form of a triangle to more precisely align the position of the mold to extend the life of the mold The aim is to provide a quick change mold that can be precisely operated by improving the dimensional accuracy of the workpiece.

In order to achieve the above object, the present invention is a quick replacement mold consisting of an upper mold and a lower mold mounted on the upper and lower portions of a quick die change (QDC) mold system capable of rapid mold replacement, the lower mold is punched And a stripper supported by a spring on top of the punch, and six posts protruding in the vertical direction through the stripper, wherein the upper mold has six posts formed at positions corresponding to the six posts. And a hole, wherein the post of the lower mold is inserted into the post hole of the upper mold when the upper mold and the lower mold are squeezed, thereby aligning the upper mold and the lower mold. do.

And the present invention is a quick replacement mold consisting of an upper mold and a lower mold mounted on the top and bottom of the QDC mold system capable of rapid mold replacement, respectively, wherein the upper mold is a punch and a stripper supported by a spring on top of the punch And six posts protruding in the vertical direction through the stripper, wherein the lower mold has six post holes formed at positions corresponding to the six posts, and the upper mold and the lower mold. When the constriction of the upper mold post is inserted into the upper and lower mold post holes, to provide a quick replacement mold, characterized in that to align the upper mold and the lower mold.

As described above, the quick change mold according to the present invention operates by more precisely aligning positions of the upper mold and the lower mold during press operation, thereby reducing the wear of the mold, extending the life, and improving the dimensional accuracy of the molded product, thus providing precise work. Brings the effect of enabling.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a quick change mold according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 4 is a perspective view showing the upper mold of the quick change mold according to an embodiment of the present invention, Figure 5 is a perspective view showing the upper mold of a quick change mold according to an embodiment of the present invention.

Referring to FIG. 4, as shown, the lower mold 120 is a punch 124 formed in the shape of a product to be processed, and is stacked on the punch 124 and supported by a spring (not shown). And a stripper 122 formed to be able to move up and down with respect to the punch 124, and six posts 125 formed to penetrate the stripper 122 in a vertical direction.

The six posts 125 are disposed on each of the three sides of the lower mold 120, respectively, and the three posts 125 disposed on one side are arranged so as not to lie in a straight line. That is, when the posts 125 arranged on one side are connected, the triangles are arranged to be triangles. At this time, it is most preferable to arrange the posts 125 at the corners of the mold, and the other one is disposed in the center of the lower mold to have an isosceles triangle as a whole. In the illustrated embodiment, the posts are arranged to have a "> <" shape, but in some cases, the posts may be arranged in a "<>" shape.

When the posts 125 are disposed at both sides to form a triangular shape, when the lower mold 120 and the upper mold 140 are narrowed, the positions of the lower mold 140 and the upper mold 120 may be more precisely aligned. This can reduce the breakage of the mold to extend the life of the mold, enabling precise work.

Referring to FIG. 5, as shown, the upper mold 140 includes a molding groove 142 corresponding to the punch 124 of the lower mold 120, and six posts (6) of the lower mold 120. It has a post hole 145 into which 125 can be inserted.

The post hole 145 is formed at a position corresponding to the post. When the post 125 is inserted into the post hole 145, the forming groove 142 of the upper mold 140 and the punch of the lower mold 120 are formed. The position of 124 is aligned.

In the case of the quick change mold having four posts in the form of a square, it is worn out after about 2000 to 3,000 times. However, as described above, if the six posts are provided and the posts are arranged in a triangular shape on both sides, about 5000 Once processed, it is worn out.

The mold wears out because the blades collide between the upper mold and the lower mold, which are generated during processing. The additional posts and the arrangement of the triangles make the alignment between the upper mold and the lower mold more accurate. Wear is reduced.

4 and 5 illustrate the type in which the stripper is provided in the lower mold, but it is apparent that the same applies to the type in which the stripper is provided in the upper mold. When the upper mold is provided with a stripper, the post is provided on the upper mold and the post hole is provided on the lower mold, and only the difference in the operation and the description thereof will be omitted.

Figure 6 is a process diagram showing in schematic cross section the operation of the quick change mold according to the present invention.

As shown in the far left of the figure, the product to be processed on the stripper 122 of the lower mold 120, the upper mold 140 is lowered. When the upper mold 140 is lowered, the post 125 provided in the lower mold 120 is fitted with the post hole 145 provided in the upper mold, and the positions of the upper mold 140 and the lower mold 120 are aligned. . As the upper mold 140 continuously descends, the product 200 is firmly fixed between the stripper 122 and the upper mold 140 as shown in the center of the figure. In this state, if the upper mold 140 continuously descends, the stripper 122 penetrates the punch 124 and the product is cut by the punch 124 as shown in the right side of the drawing, thereby forming a press.

In the illustrated embodiment, the stripper is provided on the lower mold, and the upper mold is lowered. The same applies to the type in which the upper mold is provided with a stripper and the lower mold is raised.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a configuration diagram showing the structure of a conventional QDC mold system,

Figure 2 is a perspective view schematically showing the structure of a conventional lower mold used in the QDC mold system,

3 is a perspective view schematically showing a structure of a conventional upper mold used in a QDC mold system;

4 is a perspective view showing an upper mold of a quick change mold according to an embodiment of the present invention;

5 is a perspective view showing an upper mold of a quick change mold according to an embodiment of the present invention;

Figure 6 is a process diagram showing in schematic cross section the operation of the quick change mold according to the present invention.

Explanation of symbols on main parts of the drawings

120: lower mold

122: stripper

124: Punch

125: post

140: upper mold

142: molding groove

145: post hole

Claims (6)

In the quick change mold consisting of an upper mold and a lower mold mounted on the upper and lower portions of a quick die change (QDC) mold system capable of quick mold replacement, The lower mold includes a punch, a stripper supported by a spring on top of the punch, and six posts protruding in the vertical direction through the stripper, The upper mold has six post holes formed at positions corresponding to the six posts, And the lower mold post is inserted into the post hole of the upper mold when the upper mold and the lower mold are squeezed to align the upper mold and the lower mold. In the quick change mold consisting of an upper mold and a lower mold mounted on the upper and lower portions of a quick die change (QDC) mold system capable of quick mold replacement, The upper mold has a punch, a stripper supported by a spring on top of the punch, and six posts protruding in the vertical direction through the stripper, The lower mold has six post holes formed at positions corresponding to the six posts, The upper mold and the lower mold when the upper mold and the lower mold is inserted into the post hole of the upper and lower molds, quick replacement mold, characterized in that to align the upper mold and the lower mold. The method of claim 1, Six posts provided on the lower mold are quick replacement molds, characterized in that arranged on each side of the three lower molds. The method of claim 2, Six posts provided in the upper mold is quick replacement mold, characterized in that arranged in each of the three sides of the upper mold. The method according to claim 3 or 4, The three posts arranged on each side of the three quick replacement mold, characterized in that the three posts are arranged so as not to lie in a straight line. The method according to claim 3 or 4, Quickly replace the mold, characterized in that arranged in each of the three posts are arranged in the form of an isosceles triangle.

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