JP2020131243A - Press working device - Google Patents

Abstract

To provide a press working device which can reliably confirm a flowing-in state of a panel to be processed during press working without damaging the panel to be processed.SOLUTION: A press working device 10 performs press working of a panel 5 to be processed, which is located between an upper metal mold 2 and a cushion ring 3, by the upper metal mold 2 and a lower metal mold 1. The press working device is located on a wrinkle pressing face 2a side of the upper metal mold 2 or a wrinkle pressing face 3a side of the cushion ring 3, and presses a surface of the panel 5 to be processed, and is provided with a marker 8 which draws a line by applying a line drawing material to the surface of the contacted panel 5 to be processed in association with sliding of the panel 5 to be processed.SELECTED DRAWING: Figure 1

Description

The present invention relates to a press working apparatus capable of surely knowing the inflow state of the work panel during press work without damaging the work piece.

In press working such as drawing, a panel to be machined is placed between the upper die and the cushion ring, and in this state, the panel to be machined is sandwiched between the upper die and the lower die. At the time of press working, the panel to be machined sandwiched between the upper die and the cushion ring slips and flows into the mold between the upper die and the lower die. Depending on the inflow state of the panel to be processed, wrinkles, mold distortion, cracks, etc. may occur in the panel to be processed. Therefore, it is necessary to control the inflow amount of the panel to be processed during press working.

As a method of easily grasping the inflow amount of the panel to be processed, for example, a mesh pattern or a straight line is marked on the panel to be processed in advance, and the inflow amount is predicted by observing the degree of distortion of the mesh pattern or the straight line after press working. There is a way to do it.

Japanese Unexamined Patent Publication No. 10-193006

However, in the conventional method of controlling the inflow amount of the panel to be processed, the drawn mesh pattern or the contact between the straight line and the mold causes the line to be blurred, which may make it difficult to observe the degree of distortion. Further, this method has a problem that only the difference data before and after the press working can be obtained, and the inflow state of the panel to be processed during the press working cannot be known.

In addition, Patent Document 1 describes a press type in which a marking needle is installed and a marking line is drawn on a panel to be processed. However, the scribing needle is a harder material than the panel to be processed, and the panel to be processed is scratched. Further, depending on the contact state between the scribe needle and the panel to be processed, the contact may not be reliable and the scribe line may be blurred.

The present invention has been made to solve the above problems, and provides a press working apparatus capable of surely knowing the inflow state of the work panel during press work without damaging the work piece panel. The purpose is.

In order to solve the above-mentioned problems and achieve the object, the present invention press-processes a panel to be processed arranged between an upper die and a cushion ring by the upper die and the lower die. A press working device, which is arranged on the wrinkle pressing surface side of the upper die or the cushion ring, presses against the surface of the panel to be processed, and comes into contact with the surface of the panel to be processed. It is characterized in that a marker for drawing a line is provided by painting a line painting material on the processed panel surface.

Further, in the above invention, the present invention is a mounting hole formed from the side opposite to the wrinkle pressing surface of the upper mold or the cushion ring toward the wrinkle pressing surface side, and the female screw is threaded. A marker hole that is smaller than the diameter of the mounting hole and allows the marker to protrude, and a removable holding screw that is screwed into the mounting hole from the opposite side of the wrinkle holding surface to position the initial position of the marker. A stopper that fixes the marker and abuts on a step portion formed between the mounting hole and the marker hole to prevent the marker from coming off toward the wrinkle pressing surface side, and the stopper and the marker. It has a marker holding mechanism provided with an extension spring provided between the holding screw, and during press processing using the marker, the marker is guided to the marker hole and the extension spring guides the panel surface to be processed. It is characterized in that the line is drawn by pressing.

Further, the present invention is characterized in that, in the above invention, the line painting material is a liquid material or a solid material.

According to the present invention, it is possible to reliably know the inflow state of the panel to be processed during press working without damaging the panel to be processed.

FIG. 1 is a diagram showing an outline configuration of a press working apparatus according to the present embodiment. FIG. 2 is a diagram showing a state of the press working apparatus before press working. FIG. 3 is an enlarged view of part A showing an example of the marker holding mechanism. FIG. 4 is a diagram showing an example of a line locus drawn on the back surface of the panel to be processed by a marker.

Hereinafter, the press working apparatus according to the present embodiment will be described with reference to the attached drawings.

<Overview structure>
FIG. 1 is a diagram showing an outline configuration of a press working apparatus 10 according to the present embodiment. The press working apparatus 10 shown in FIG. 1 is an apparatus for drawing, and shows a state at the end of press working. Further, FIG. 2 is a diagram showing a state of the press working apparatus 10 before the press working.

As shown in FIGS. 1 and 2, the press working apparatus 10 has a lower die 1, an upper die 2, a cushion ring 3, and a marker 8. The lower mold 1 and the upper mold 2 are driven and controlled by the drive unit 11. As shown in FIG. 2, when the panel 5 to be processed is drawn, the panel 5 to be processed is arranged on the cushion ring 3, the upper die 2 is lowered, and the upper die 2 and the cushion ring 3 are used. The panel 5 to be processed is sandwiched. After that, as shown in FIG. 1, the upper mold 2, the panel 5 to be processed, and the cushion ring 3 are integrated and further lowered, and the upper mold 2 and the lower mold 1 form the panel 5 to be processed. Drawing. As shown in FIG. 1, during drawing processing, the panel 5 to be processed flows into the mold between the upper mold 2 and the lower mold 1.

In drawing, the upper die 2 and the cushion ring are around the panel 5 to be machined so as to form a clearance in which the amount of inflow into the drawn portion due to the sliding of the panel 5 to be machined during drawing is appropriate. A plurality of distance blocks 6 are arranged between the three and the distance block 6. If this clearance is non-uniform, the panel 5 to be processed will be wrinkled or cracked. The height adjustment of the distance block is performed by inserting and removing the adjustment shim 7 from the distance block 6. It should be noted that instead of the distance block 6, a bead may be used to control the inflow amount of the panel 5 to be machined during drawing to prevent the occurrence of wrinkles and surface distortion.

A plurality of markers 8 are arranged on the cushion ring 3. The marker 8 presses the panel 5 to be processed from the wrinkle pressing surface 3a on the side of the panel 5 to be processed of the cushion ring 3, and as the panel 5 to be processed slides, a line is drawn on the back surface of the panel 5 to be processed. Paint the painting material and draw a line. The marker 8 may be arranged on the upper mold 2. In this case, the marker 8 presses the panel 5 to be processed from the wrinkle pressing surface 2a corresponding to the wrinkle pressing surface 3a, and as the panel 5 to be processed slides, the line painting material is brought into contact with the surface of the panel 5 to be processed. Paint and draw a line.

The marker 8 presses the panel 5 to be processed by an extension spring provided in the marker holding mechanism 9. At least the tip of the marker 8 is made of line painting material. The line painting material is a liquid material or a solid material. When the line painting material is a liquid material, the liquid material is, for example, ink, and the specific marker 8 is an oil-based marker such as a magic pen. When the line painting material is a solid material, the marker 8 is, for example, a grease pencil such as a dermatograph (registered trademark), a crayon, or a chalk. In any case, the marker 8 may be coated with a line painting material on the surface of the panel 5 to be processed.

<Marker holding mechanism>
Next, the marker holding mechanism 9 for holding the marker 8 will be described. FIG. 3 is an enlarged view of part A showing an example of the marker holding mechanism 9. As shown in FIG. 3, the marker holding mechanism 9 has a mounting hole 30 and a marker hole 31 formed in the cushion ring 3, and has a stopper 20, an extension spring 21, and a holding screw 22 for fixing the marker 8.

The mounting hole 30 is formed from the opposite side of the wrinkle pressing surface 3a of the cushion ring 3 toward the wrinkle pressing surface 3a, and the female screw is threaded. The marker hole 31 is smaller than the diameter of the mounting hole 30, and the marker 8 can protrude. The holding screw 22 is removable and is screwed into the mounting hole 30 from the opposite side of the wrinkle pressing surface 3a to position the initial position of the marker 8. The stopper 20 has a stopper function for fixing the marker 8 and for preventing the marker 8 from coming off toward the wrinkle pressing surface 3a side by contacting the stepped portion 32 formed between the mounting hole 30 and the marker hole 31. .. The extension spring 21 is provided between the stopper 20 and the holding screw 22.

During drawing processing using the marker 8, the marker 8 is guided by the marker hole 31 and presses the back surface of the panel 5 to be processed by the extension spring 21 to draw a line. At the time of drawing without using the marker 8, the position of the holding screw 22 is lowered to arrange the marker 8 below the wrinkle pressing surface 3a. Alternatively, the marker 8, the extension spring 21, and the holding screw 22 including the stopper 20 are taken out, and a plug member that closes the marker hole 31 is fitted into the marker hole 31. Alternatively, the stopper member corresponding to the marker 8 including the stopper 20 and below the surface of the wrinkle pressing surface 3a is replaced with the marker 8 including the stopper 20.

<Example of line trajectory by marker>
FIG. 4 is a diagram showing an example of the line locus DR drawn on the back surface of the panel 5 to be processed by the marker 8. FIG. 4A is a perspective view of the processed panel 5 on which the line locus DR is drawn as viewed from the front surface side, and FIG. 4B is a perspective view of the processed panel 5 on which the line locus DR is drawn from the back surface side. It is a perspective view as seen.

As shown in FIG. 4, the line locus DR by the marker 8 is drawn on the back surface 5a of the panel 5 to be processed as a continuous line from the start to the end of drawing. Moreover, since a plurality of drawings are drawn around the panel 5 to be processed, it is possible to grasp the overall inflow amount and inflow direction of the panel 5 to be processed.

According to the configuration of the present embodiment, the marker 8 does not damage the surface of the panel 5 to be processed unlike a scribing needle. Therefore, the drawn panel 5 can be used as it is as a product, and the processing production efficiency can be improved. Further, since the drawing process using the marker 8 can be continuously or intermittently performed while the product is produced by drawing process, the change with time of the inflow state of the panel 5 to be processed can be observed without lowering the processing production efficiency. can do. The wear state of the mold can be known by obtaining the change with time of the inflow state.

Further, since the marker 8 draws a line during drawing, it is possible to observe not only the inflow amount but also the continuous change in the inflow direction during drawing.

Based on the observation results of the inflow amount and the inflow direction, the height of the distance block 6 can be adjusted so that the inflow amount and the inflow direction have appropriate values. When the inflow amount is large, the friction is small and wrinkles are more likely to occur, so that the height of the distance block 6 is lowered. When the inflow amount is small, the friction is large and the inflow is difficult. Make adjustments to increase the height. Further, the accuracy of the CAE (Computer Aided Engineering) analysis tool can be improved based on the observation results of the inflow amount and the inflow direction.

The extension spring 21 may be an elastic body such as rubber as long as it can exert an extension force.

Further, although the above-mentioned press working has been described in drawing, it can also be applied to other bending and shearing work.

It should be noted that each configuration shown in the above-described embodiment is a schematic function, and does not necessarily have to be physically shown. That is, the form of distribution / integration of each device is not limited to the one shown in the figure, and all or part of the device is functionally or physically distributed / integrated in an arbitrary unit according to various loads and usage conditions. Can be configured.

The press working apparatus of the present invention is useful when it is desired to reliably know the inflow state of the panel to be machined during press working without damaging the panel to be machined.

1 Lower die 2 Upper die 2a, 3a Wrinkle holding surface 3 Cushion ring 5 Panel to be processed 5a Back surface 6 Distance block 7 Adjustment shim 8 Marker 9 Marker holding mechanism 10 Press processing device 11 Drive unit 20 Stopper 21 Extension spring 22 Holding screw 30 Mounting hole 31 Marker hole 32 Stepped part DR line locus

Claims (3)

A press working apparatus that presses a panel to be processed arranged between an upper die and a cushion ring by the upper die and the lower die.
The line painting material is placed on the wrinkle pressing surface side of the upper mold or the cushion ring, presses against the panel surface to be processed, and is brought into contact with the panel surface to be processed as the panel to be processed slides. A press working device characterized by being provided with markers that are painted and drawn. A mounting hole formed from the side opposite to the wrinkle holding surface side of the upper mold or the cushion ring toward the wrinkle holding surface side and threaded with a female screw.
A marker hole that is smaller than the diameter of the mounting hole and allows the marker to protrude,
A removable holding screw that is screwed into the mounting hole from the opposite side of the wrinkle holding surface to position the initial position of the marker.
A stopper that fixes the marker and abuts on a step portion formed between the mounting hole and the marker hole to prevent the marker from coming off toward the wrinkle pressing surface side.
It has a marker holding mechanism provided with an extension spring provided between the stopper and the holding screw.
The press working apparatus according to claim 1, wherein at the time of press working using the marker, the marker is guided by the marker hole and presses the panel surface to be processed by the extension spring to draw the line. The press working apparatus according to claim 1 or 2, wherein the line painting material is a liquid material or a solid material.

Images