KR100645877B1 - Apparatus and method for press forming product follows in its shape - Google Patents

Abstract

An equipment and a method for press forming a product according to product shape, which can correct pressing force of the press equipment by increasing or decreasing a proper pressing force in a press equipment when press forming a product according to shape of the product, and can obtain a high quality product by preventing product defects that can be generated after press forming, are provided. An equipment for press forming a product according to product shape comprises: an upper mold(2) vertically reciprocated by a prescribed press(1); a lower mold(2) installed on a prescribed lower base(3) oppositely to the upper mold; a moving plate(12) which supports the lower mold and vertically moves the lower mold by at least one vertical cylinder(15); a plurality of supporting rods(11) installed between the moving plate and the lower mold to support the lower mold; cylinders(14) installed on the bottom of the moving plate to selectively press the supporting rods when press forming the bottom of the supporting rods partially passing through the moving plate; and a controller for operating the respective cylinders by data inputted according to shape of an applied product to move the supporting rods in a vertical direction.

Description

Press apparatus and molding method according to product shape {APPARATUS AND METHOD FOR PRESS FORMING PRODUCT FOLLOWS IN ITS SHAPE}

1 is a block diagram of a press apparatus according to the prior art;

2 is a block diagram of a press apparatus according to the present invention;

3A and 3B are main cross-sectional views illustrating a process of correcting a pressing force of a supporting rod according to the present invention;

4 is a block diagram showing a control process of a cylinder by a controller according to the present invention;

5 is a molded article by the first pressing process of the apparatus according to the present invention; And

6 is a working flow diagram of an apparatus according to the present invention.

<Explanation of symbols for main parts of the drawings>

1: press 2: mold

3: lower base 4: support rod

5: support plate 6: cylinder

11: support rod 12: moving plate

13: support 14: cylinder

15: upper and lower cylinder 16: holder

17: rail 18: controller

The present invention relates to a press forming apparatus for forming a product using a common cold rolled steel sheet, the press according to the shape of the product is configured to ensure the production of high-quality products at all times by correcting the pressing force of the press device according to the shape of the product It relates to an apparatus and a molding method.

In general, press molding is used as an apparatus for forming a desired product using a thin metal plate. The press molding has been used in various aspects of product molding because of its short production time and ease of mass production.

FIG. 1 is a view of a press forming apparatus according to the prior art, and conventionally, a mold 2 for molding is formed in a press 1, and a lower mold 2 is seated in an upper part of a press 1 and a lower base 3. , Fixing and inserting the supporting rods (4) in consideration of the shape of the mold (2) inside the hole processed in the lower base (3). The support bar 4 is positioned on the support plate 5 so that the support bars 4 operate in the vertical direction by the operation of the cylinder 6 and the support plate 5, and the support rods are moved forward in the cylinder 6. 4) While the metal mold 2 is being pushed, the metal sheet to be molded is placed on the lower mold 2 and the press 1 is operated to contact the upper mold 2 with the lower mold 2. When moving, the supporting rod 4 and the cylinder 6 pushing the mold 2 are pushed down and moved to the lower side, and when the lower end of the mold 2 comes into contact with the lower base 3, it operates at the press 1 setting position. It stops and molding operation is completed.

The current press working condition sets the desired press pressure and supporting pressure in the controller before the press (1) operation and produces press-formed products with all operations under these set conditions. Therefore, the molding depth difference occurs according to the shape of the molded product. It is difficult to produce a uniform product due to breakage of the product due to the difference of support pressure and occurrence of molding defects of the product due to the difference of support pressure. And, when high, a problem occurs that causes cracking.

SUMMARY OF THE INVENTION An object of the present invention is to provide a press device and a method according to the product shape is configured to correct by pressing the appropriate pressing force to the press device when forming the product according to the shape of the product to solve the problems as described above. have.

It is another object of the present invention to provide a press apparatus and method according to a product shape configured to obtain a high quality product by preventing defects in a product that may occur after molding.

In order to solve the above object, the present invention provides an upper mold for vertical reciprocating motion by a predetermined press, a lower mold installed to face the upper mold on a predetermined lower base, and the lower mold. A support plate for moving the lower mold in a vertical direction by at least one upper and lower cylinders, a plurality of support rods installed between the movable plate and the lower mold to support the lower mold, and a bottom of the movable plate. Installed in the cylinder to selectively press the bottom of the support rod that partially passes through the moving plate and press the cylinder according to the input data according to the shape of the product to be applied during the press molding to flow the support rod in the vertical direction. And a controller.

Moreover, this invention provides the shaping | molding method according to the product shape by the press apparatus comprised as mentioned above. Therefore, the present invention is to set the upper and lower molds and blow the material between the molds to primary molding the product, and to take out the primary molded product and to perform an analysis evaluation for each part, and to the product Correcting the pressure for each part by operating the cylinder by inputting the calculated data after the evaluation of the analysis, and producing the secondary molded product by controlling the cylinder by the upper and lower molds. It is characterized by.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the case where it is determined that the gist of the present invention may be unnecessarily obscured, the detailed description thereof will be omitted.

2 is a configuration diagram of a press apparatus according to the present invention, in which a groove is processed in a moving plate 12 assembled inside a lower base 3 of a press 1, and a support 13 is disposed below the moving plate 12. Assembling a plurality of cylinders to secure the cylinder 14, guide rails (17 in Figure 3a) having a drainage shape to form a rail 17 to the support 13, the upper portion of the moving plate 13 Insert the support rod 11 into the lower plate to assemble the support rod 11 in the hole processed in the moving plate (12). The lower inclined surface of the support bar 11 and the inclined surface of the fixing stand 16 are in contact with each other, and the upper and lower cylinders 15 are assembled to both sides in the lower base 3 for the up and down operation of the movable plate 12. And a controller 18 for integrating and controlling the device.

Figure 3b is a cross-sectional view of the main part showing a process of correcting the pressing force of the support bar according to the present invention Figures 3a and 3b, Figure 4 is a block diagram showing the control process of the cylinder by the controller according to the invention, press ( The mold 2 is seated and fixed in 1). Thereafter, the upper and lower cylinders 15 are in the home position and the supporting rods 11 are in contact with the molds 2 and are in the lower positions, and the material to be processed is moved and placed on the lower molds 2. The controller 18 inputs the pressing force and the supporting pressure of the press 1, and when the upper and lower cylinders 15 are moved upward, the supporting rods 11 push the mold 2 upward and set by the moving plate 12. When the upper and lower cylinders 15 are stopped, they reach the working position. After that, the press 1 is moved. The first press operation is performed by pressing to grasp the state of the processed product, and the pressure of the supporting rods 11 supporting each position according to the depth difference of the molded product is corrected by the controller 18 to perform the secondary molding operation. If abnormality does not occur in the product, the processing conditions are input to the controller 18 so that the next work of the same product is continuously performed under the same conditions, thereby completing all operations.

That is, during the secondary molding, the controller 18 operates the cylinder 14 according to the data information input by the user, and as shown in FIG. Can be adjusted.

EXAMPLE

Referring to Figure 5 using the molded article of the apparatus according to the present invention to describe the support pressure of the support rods 11, after the first molding operation at the same support pressure to evaluate the analysis of the molded article, appearing in blue in the analysis data The part is made less molding work, the part displayed in red is a lot of molding, the mold 14 of the support rod 11 by controlling the cylinder 14 in the controller 18 on the basis of the color of the evaluated molded product Calculate the support pressure for each position of.

6 illustrates a method for compensating support pressure for wrinkles and cracks by using the flow chart of the apparatus according to the present invention, the height of the wrinkles is measured when wrinkles occur after the primary molding, and the following <Table 1> As shown, the molding work is performed by compensating the supporting pressure at the basic pressure.

6 illustrates a method of compensating support pressure for creases and cracks by using the flow chart of the apparatus according to the present invention. As described above, the molding work is carried out by subtracting the supporting pressure from the basic pressure, and the portion where wrinkles occur is corrected as shown in Table 1 so that the molding is performed.

Apparently, there are many ways to modify these embodiments while remaining within the scope of the claims. In other words, there may be many other ways in which the invention may be practiced without departing from the scope of the following claims.

According to the present invention, since the pressurization of the molded product is made by differentiating the supporting pressure for each position according to the shape of the product for forming the press upper mold and the molding depth, there is an effect of preventing the defect of the product and processing the product with high accuracy. .

Claims (3)

An upper mold for vertical reciprocating motion by a predetermined press; A lower mold installed to face the upper mold on a predetermined lower base; A moving plate supporting the lower mold and flowing the lower mold in a vertical direction by at least one upper and lower cylinders; A plurality of support rods installed between the movable plate and the lower mold to support the lower mold; A cylinder installed at the bottom of the moving plate to selectively press the bottom of the supporting rod partially penetrating the moving plate during press molding; And And a controller for operating the respective cylinders according to the shape of the product to be applied to move the support rod in the vertical direction. The method of claim 1, The end of the support rod is formed in the inclined surface inclined in a predetermined direction, the end of the fixed rod of the cylinder is formed in the inclined surface corresponding to the inclined surface of the support rod is configured to convert the horizontal motion of the cylinder into the vertical movement of the support rod Press device according to the product shape characterized by. An upper mold, a lower mold installed to face the upper mold, a movable plate supporting the lower mold and allowing the lower mold to flow in a vertical direction by at least one upper and lower cylinder, and between the movable plate and the lower mold. A plurality of support rods installed to support the lower mold, cylinders for selectively pressing the bottom of the support rods installed at the bottom of the movable plate and partially penetrating the movable plate during press molding, and input according to the shape of the applied product. In the method of forming a product of a press apparatus comprising a controller for operating the respective cylinders by the generated data to flow the support rod in the vertical direction, Setting the upper and lower molds and blowing a material between the molds to firstly mold the product; Taking out the primary molded product and performing an analysis evaluation for each part; Correcting the pressure for each part by operating the cylinder by inputting data calculated after analytical evaluation of the product; And Producing a secondary molded article by means of upper and lower molds, and by control of a cylinder by said controller.

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