KR20150030989A

KR20150030989A - Bending the sides forming a flexible mold available

Info

Publication number: KR20150030989A
Application number: KR20130110410A
Authority: KR
Inventors: 조재우
Original assignee: 주식회사 동구기업
Priority date: 2013-09-13
Filing date: 2013-09-13
Publication date: 2015-03-23

Abstract

The present invention relates to a movable mold with both sides to be molded and bent, which prevents the bent surface of an object and a side next to it from being creased, crushed, and damaged when both sides of the object is molded to be bent in a press mold. The top of frames (20, 20′) hinged with idle rollers (21, 21′) slide to be joined to an upper mold (U) as sliders (10, 10′) are installed at the bottom on both sides of the upper mold (U). The cylinders (31, 31′) of gas springs (30, 30′) are inserted into and joined to cylinder joining grooves (22, 22′) at the outer top of the frames (20, 20′). The outermost ends of the gas springs (30, 30′) are fixated to the bottom of the upper mold (U).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a movable mold,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable mold capable of bending both sides of a product so that wrinkles, The idler rollers are lowered along both side surfaces of the product when the upper mold is lowered, so that the bent surface of the product and the side surface of the product So that the surface of the mold can be molded in a good state.

In general, a mold is a mold made by using a metal material as a tool for producing a product by processing a material by using properties such as plasticity, malleability, and fluidity of the material. Molds for injection molding, injection molding, die casting, forging, rubber molding, glass molding, powder metallurgy, ceramics and casting molds.

The press die is a die for molding a metal product by installing a special tool such as a die in a press machine that performs a linear reciprocating motion. The die is subjected to plastic deformation by applying a compressive force to the material to perform bending, shearing, It is a machine that performs work.

Plastics and fibers as well as metals such as steel plates, copper plates and aluminum plates can be used as the working materials that can be used in the press working. Such press working can be performed without heating the working materials and the precise dimensions And it is suitable for mass production.

The press die is basically composed of a slider installed vertically movably in a frame and a frame, an actuator for moving the slider up and down, a lower mold formed of a mold for applying a compressive force to the work material, And an upper mold which is installed as far as possible.

The lower mold is coupled to the mold mounting portion of the press mold, the upper mold is coupled to the slider, and the upper mold and the lower mold can be replaced with other ones as needed.

A press mold having a separate movable part is required to restore the characteristics of a product to a press mold composed of an upper and a lower mold according to a user's demand in a general press mold as described above.

As a conventional movable mold, Registration No. 10-0414954 (movable mold capable of adjusting the length) is presented.

In the above-mentioned patent, the upper mold is provided with a movable plate mounted on one side of the fixed plate, the movable plate air cylinder is operated by the movable plate valve switch, the spacing member of the movable plate operates the interval air cylinder by the interval reset valve switch, And a guide rail is installed on both sides of the punching block. The lower mold is provided with a movable plate mounted on one side of the fixed plate so that the movable plate air cylinder is operated by the movable plate valve switch, The air cylinder is operated by the interval re-valve switch, and the central axis of the partition support body is inserted into the long hole at one side of the fixing plate to rotate around the engaging jaw.

The above-mentioned conventional registered patent has compatibility to correspond to various products having the same width and different length depending on the characteristics of a door liner of a refrigerator, and it is possible to reduce costs due to the production of respective molds, The advantage of shortening the machining time is that it can be secured and it can be operated by a large number of air cylinders and valve switches (moving plates, spacers, etc.) and separating the fixed plate and the movable plate on the upper and lower molds. There is a problem that the structure is complicated and the production of a mold is not easy.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for supporting a frame having an idler roller by using an elastic force of gas springs, It is possible to bend the bent surface and the side surface of the product having a constant curvature formed on both sides of the product while the product is lowered to form the product with the best bending surface quality, So that it is possible to provide a movable mold which does not require a separate process or operation in the molding operation.

In the present invention, a slider is provided at both lower ends of an upper mold so that an idler roller is slidably coupled to an upper portion of a hinged frame, and a cylinder coupling groove is formed at an upper portion of the frame to insert the cylinder of the gas spring, And the outer end is fixed to the lower end of the upper mold.

And three gas springs coupled by a cylinder to the cylinder coupling groove of the frame are provided.

Therefore, it is an object of the present invention to provide a convenient method of easily mounting a frame having a gas spring and an idler roller on both sides of a lower part of a lower part of a press mold, The product quality is improved by minimizing the incidence of defective products such as wrinkles, dents and breakage that occur on the side of the bent surface formed on the side and its side, and it is formed by lowering operation simultaneously with the upper mold without additional operation. And the like.

1 is a schematic view of an upper mold of the present invention
2 is a schematic view of a lower mold of the present invention
3 is a side view showing the entire structure of the present invention.
Fig. 4 is a half sectional view showing the operating state of the present invention. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

1 and 2 are schematic views of the upper and lower molds of the present invention. FIG. 3 shows a structure in which a frame having a gas spring and an idler roller are mounted on the upper mold and a product is placed on the lower mold. FIG. (A gas spring, an idler roller, a frame, and a slider) is installed on an upper mold according to a side view of the mold. FIG. 4 is a cross- So that both ends of the product are bent and formed.

A movable mold for bending molding both sides of a product (W) with a press mold composed of an upper mold (U) and a lower mold (L)

Sliders 10 and 10 'are provided at both lower ends of the upper metal mold U so that the idler rollers 21 and 21' slide-coupled the upper portions of the hinged frames 20 and 20 ' The cylinder engaging grooves 22 and 22 'are formed on the outer sides of the gas passages 20 and 20' so that the cylinders 31 and 31 'of the gas springs 30 and 30' 30) 30 'are fixed to the lower end of the upper mold (U).

Three gas springs 30 and 30 'are connected to the cylinder coupling grooves 22 and 22' of the frames 20 and 20 'by the cylinders 31 and 31', respectively.

According to the present invention, a movable part composed of a gas spring, an idler roller, a frame, and a slider is simply and easily installed in an upper mold of an existing press mold composed of an upper mold and a lower mold, And to provide a movable mold capable of improving the quality of the bending portion formed on both sides of the product and its side and minimizing the defect rate.

3, when the product W in which the bent portions are formed on both side surfaces of the press die constituted by the upper mold U and the lower mold L is press-formed, the bending portions and the wrinkles and dents A frame 20, 20 'in which gas springs 30, 30', idler rollers 21, 21 'are hinge-connected to both lower ends of the upper mold U so as to prevent breakage, The movable part composed of the sliders 10 and 10 'is provided and press-molded together with the upper mold U is made possible.

The movable part is provided with sliders 10 and 10 'at both lower ends of the upper mold U and a frame 20 (see FIG. 1) in which idler rollers 21 and 21' are hinged to the slider 10 ' 20 ').

The cylinders 31 and 31 'provided at one inner side of the gas springs 30 and 30' are inserted into the cylinder engagement grooves 22 and 22 'formed at the rear upper end of the frames 20 and 20' And the other end of the gas spring 30 (30 ') is fixed to the lower end of the upper mold (U).

It is preferable that three gas springs 30 and 30 'are provided on both sides.

4, when the product W is placed on the lower mold L and the upper mold U is lowered, the upper and lower molds U, The movable portions provided on both sides of the lower portion of the upper metal mold U are pressed against the cylinders 31 and 31 'of the gas springs 30 and 30' The idle rollers 21 and 21 'of the frames 20 and 20' bend and the frames 20 and 20 ' 20) 20 'are pushed outward in the sliders 10 and 10' and the cylinders 31 and 31 'are also moved backward to bend the product W.

When the bending of the product W is completed, the upper mold U is lifted and the cylinders 31 and 31 'are moved to the inner side of the frame 20 and 20' by the elastic force of the gas springs 30 and 30 ' The frames 20 and 20 'return to their original positions in the sliders 10 and 10' and wait for the next operation.

1 is a plan view of an upper mold U showing gas springs 30 and 30 ', idle rollers 21 and 21', frames 20 and 20 ', sliders 10 and 10' FIG. 2 shows a state where the product W is placed on the lower mold L. FIG.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. And such changes are within the scope of the claims.

10, 10 ': Slider 20, 20': Frame
21, 21 ': idler rollers 22, 22': cylinder coupling groove
30, 30 ': gas spring 31, 31': cylinder
L: Lower mold U: Upper mold

Claims

A movable mold for bending molding both sides of a product (W) with a press mold composed of an upper mold (U) and a lower mold (L)
Sliders 10 and 10 'are provided at both lower ends of the upper metal mold U so that the idler rollers 21 and 21' slide-coupled the upper portions of the hinged frames 20 and 20 ' The cylinder engaging grooves 22 and 22 'are formed on the outer sides of the gas passages 20 and 20' so that the cylinders 31 and 31 'of the gas springs 30 and 30' (30 ') is fixed to the lower end of the upper mold (U).

The method according to claim 1,
And three gas springs 30 and 30 'coupled to the cylinder coupling grooves 22 and 22' of the frames 20 and 20 'by the cylinders 31 and 31' A movable mold capable of bending both sides.