JP2002102942A - Press die device ! forming method of groove and fluidised forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press die capable of preventing a forming defect from occuring in a panel and facilitating manufacture of a pressed product. SOLUTION: The press die device 10 is provided with a fixed die 15 having a forming face 20 with which a panel 1 comes into contact, a rotary die 17 rotatably provided with relation to the fixed die 15, a bad 35, and a movable die 40. A vertical attending first supporting face 51 and a horizontally attending second supporting face 52 are formed in the fixed die 15. A first receiving face 61 getting into contact with the second supporting face 52, in the state that the rotary die 17 moves to the working position are provided in the rotary die 17. The position of the rotary die 17 is regulated by the contact of the receiving face 61 with the first supporting face 51, the contact of the receiving face 62 with the second supporting face 52, and both are connected together without level difference and gap between the forming face 20 of the fixed die 15 and the forming face 30 of the rotary die 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press die apparatus for forming an edge of a panel constituting a body of an automobile, for example.

[0002]

2. Description of the Related Art For example, when manufacturing a fender panel or the like which constitutes a part of an automobile body, a press die apparatus is used to bend an edge of the panel toward the inside of a vehicle body. In a mold apparatus for performing this kind of bending, a rotary mold is sometimes used in order to be able to take out the panel from the mold after bending the edge of the panel.

A rotary mold provided on a fixed mold is rotatable between a processing position and a non-machining position. When the rotary mold is moved to the processing position, the molding surface of the rotary mold is continuous with the molding surface of the fixed mold. Has become. The panel is placed on these molding surfaces, the panel is sandwiched by lowering the pad of the upper die, and the edge of the panel is bent by a movable die that moves horizontally. After that, the rotary mold is rotated to the non-machining position so that the interference between the edge of the panel and the rotary mold is avoided, and then the panel is taken out.

[0004]

The rotary mold is rotatably fitted in a recess having a circular arc-shaped inner peripheral surface formed in a fixed mold. For this reason, a certain gap is required between the inner peripheral surface of the concave portion and the outer peripheral surface of the rotary mold in order to smoothly rotate the rotary mold. However, if the gap is too wide, when the rotary mold moves to the processing position, a step or a gap is generated between the molding surface of the fixed mold and the molding surface of the rotary mold, and when the panel is pressed against these molding surfaces. This may cause defective molding such as scratches and deformation. On the other hand, if the gap is brought close to zero, not only will the rotary mold not be able to rotate smoothly, but also if a relatively rotating part such as the outer peripheral surface of the rotary mold or the inner surface of the fixed mold will be machined. Accurate processing is required, and the cost is greatly increased.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a press die apparatus which does not cause panel molding defects and facilitates the manufacture of a die.

[0006]

SUMMARY OF THE INVENTION The present invention for achieving the above object is constructed as described in claim 1. In the press die apparatus of the present invention, when the rotary die is at the processing position, the first support surface is in contact with the first receiving surface, and the second support surface is in contact with the second receiving surface. The position of the molding surface of the rotary mold with respect to the molding surface of the mold is accurately regulated. For this reason, a step or a gap is avoided between the molding surface of the fixed mold and the molding surface of the rotary mold.

When the rotary mold moves between the machining position and the non-machining position, the first and second support surfaces move away from the first and second receiving surfaces, respectively, and the rotary mold moves about the axis. Rotate. For this reason, there is no problem even if the tolerance of the relative rotation portion between the fixed mold and the rotary mold is large, and the manufacture of the fixed mold and the rotary mold is facilitated, and the rotary mold can rotate smoothly.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The press die apparatus 10 of this embodiment is used for molding an edge 1a of a panel 1 as an example of a work indicated by a two-dot chain line in FIG. One example of the panel 1 is a panel of a front fender of an automobile, and a main part 1b excluding an edge part 1a as shown in FIG.
Are previously formed into a predetermined product shape by a press or the like.

This mold apparatus 10 includes a lower mold unit 11
And an upper mold 12 that moves vertically with respect to the lower mold unit 11. The lower mold unit 11 includes a fixed mold 15.
And a rotary mold 17 provided in the concave portion 16 of the fixed mold 15. A molding surface 20 on which the panel 1 is mounted is formed on the upper part of the fixed mold 15. This molding surface 20
Main part 1 of panel 1 formed in advance by pressing or the like
It has a shape corresponding to b.

The rotary mold 17 has a shaft 25 extending in the horizontal direction.
have. The shaft 25 is supported by a bearing 26 (shown in FIG. 1) provided in the lower mold unit 11 so as to be rotatable around an axis X in the direction of an arrow A (shown in FIG. 2), and is a hydraulic device that is an example of a driving unit. A driving mechanism 27 such as a cylinder can switch between a non-machining position shown in FIG. 2 and a machining position shown in FIG. A play is provided between the shaft 25 of the rotary mold 17 and the bearing 26 so that the rotary mold 17 can move to some extent in the radial direction of the shaft 25 when the rotary mold 17 rotates.

The rotary mold 17 has a molding surface 30 adjacent to the molding surface 20 of the fixed mold 15 when in the processing position,
A molding surface 31 for forming a blind spot having a shape corresponding to the edge 1a of the panel 1 to be molded. The molding surface 30 has a shape corresponding to the main portion 1b of the panel 1 placed thereon.

The upper die 12 which moves up and down is provided with pads 35 which sandwich the main part 1b of the panel 1 between the upper die 12 and the molding surfaces 20, 30 when the upper die 12 is lowered. Pad 3
5 has a shape corresponding to the main portion 1b of the panel 1, that is, a shape conforming to the molding surfaces 20, 30.
The pad 35 is urged downward by an urging member 36 such as a spring.

A movable mold 40 is provided on the upper mold 12.
The movable die 40 is movable in a direction indicated by an arrow B in FIG. 2 along a cam surface 41 formed on the upper die 12, and is urged upward by urging means (not shown). The cam surface 41 has a shape that is vertically inclined such that one end 41a is lower than the other end 41b. On the front end side of the movable mold 40, a blade 42 having a shape corresponding to the edge 1a of the panel 1 to be formed is provided.

The panel 1 comprises a pad 35 and molding surfaces 20, 30.
Is movable between the upper mold 12 and the upper mold 12.
By moving in the direction (horizontal direction as shown in FIG. 5 in this embodiment) different from the moving direction (downward direction) of the rotary mold 17, the blade portion 42 and the molding surface 31 of the rotary mold 17 are moved. The edge 1a of the panel 1 is sandwiched, and the edge 1a is formed.

On the inner surface of the concave portion 16 of the fixed die 15, a first support surface 51 formed of a flat surface extending in a vertical direction (for example, a vertical direction) is provided.
And a direction different from the first support surface 51 (for example, a horizontal direction)
A second support surface 52 that functions as a first second support surface formed of a flat surface extending from the second support surface 52, and functions as a second second support surface that includes a flat surface that is inclined upward from the second support surface 52. A third support surface 53 is formed.

The rotary mold 17 includes the rotary mold 17.
The first flat receiving surface 61 that comes into contact with the first support surface 51 when it moves to the processing position, and the first flat surface that functions as the first second receiving surface and comes into contact with the second support surface 52 The second receiving surface 62 and a planar third receiving surface 63 functioning as a second second receiving surface and abutting on the third support surface 53 are provided. These receiving surfaces 61, 6
2, 63 are formed in shims 64, 65, 66.
Each shim 64, 65, 66 has a respective support surface 51, 52,
In a state where the surface 53 and the receiving surfaces 61, 62, 63 are in surface contact with each other, the molding surface 20 of the fixed mold 15 and the molding surface 30 of the rotary mold 17 are continuous without any substantial step or gap. Thus, each thickness is adjusted.

Next, the operation of the press die apparatus 10 having the above configuration will be described. As shown in FIG. 3, when the rotary mold 17 is moved to the processing position by the drive mechanism 27, the receiving surfaces 61, 62, 63 of the rotary mold 17 are respectively attached to the support surfaces 51, 52, 53 of the fixed mold 15. Make surface contact. Here, since there is a certain amount of play between the shaft 25 of the rotary die 17 and the bearing 26, the vertical position of the rotary die 17 with respect to the fixed die 15 is regulated by the second support surface 52 and the receiving surface 62. . The horizontal position of the rotary mold 17 with respect to the fixed mold 15 is accurately regulated by the first support surface 51 and the receiving surface 61 and the third support surface 53 and the receiving surface 63.

That is, by controlling the positions of the receiving surfaces 61, 62, 63 in accordance with the thicknesses of the shims 64, 65, 66 with high precision, the vertical position of the forming surface 30 at the processing position of the rotary mold 17 is controlled. Since the position in the horizontal and horizontal directions can be regulated with high precision, the molding surface 20 of the fixed die 15 and the rotary die 17
Steps and gaps can be avoided at the boundary portion P with the molding surface 30.

Further, when the rotary mold 17 rotates between the machining position and the non-machining position, the dimensional tolerance of the relatively rotating portions such as the inner surface of the concave portion 16 of the fixed mold 15 and the outer surface of the rotary mold 17 is determined. The dimensional tolerance of the relative rotation part of the conventional rotary mold can be made larger than that, and the machining accuracy of the fixed mold 15 and the rotary mold 17 is alleviated, and the manufacture of the molds 15 and 17 becomes easy.

As shown in FIG. 3, after the rotary mold 17 moves to the processing position and the panel 1 is placed on the molding surface 20 of the fixed mold 15 and the molding surface 30 of the rotary mold 17, As shown in FIG. 4, the upper mold 12 descends to the intermediate position. At this time, the pad 35 contacts the panel 1 and the pad 3
The panel 1 is sandwiched between the mold 5 and the molding surfaces 20 and 30, and the lower surface of the movable mold 40 contacts the guide surface 70 of the fixed mold 15 and the guide surface 71 of the rotary mold 17.

When the upper mold 12 further descends and reaches the lower end shown in FIG. 5, the movable mold 40 moves along the cam surface 41 from one end 41a to the other end 41 while the urging member 36 is compressed in the process.
By relatively moving to the b side, the blade portion 42 of the movable mold 40 is
Moves forward (in the direction indicated by arrow D) toward the forming surface 31 of the rotary mold 17. The edge 1a of the panel 1 is formed by the cooperation of the blade 42 and the forming surface 31.

After the edge 1a is formed, the upper mold 12 returns to the raised position shown in FIG.
Is moved to the non-machining position by the driving mechanism 27, the rotary mold 17 is retracted so that the edge 1a of the molded panel 1 indicated by the two-dot chain line C does not interfere with the molding surface 31 of the rotary mold 17, and 1 is ready to be taken out. Then, by taking out the panel 1, a series of pressing steps is completed.

In practicing the present invention, the form of the panel to be molded, including the fixed mold, upper mold, rotary mold, driving means, molding surface, pad, movable mold, first, second, and third supports It goes without saying that the elements constituting the present invention, such as the surfaces and the first, second and third receiving surfaces corresponding thereto, can be appropriately modified and implemented.

In the above embodiment, the two support surfaces 52 and 53 are formed as the second support surface, and the two support surfaces 62 and 63 are formed as the second support surface. It goes without saying that the second receiving surface only needs to be provided so that at least one set of the supporting surface and the receiving surface form a pair.

[0025]

According to the first aspect of the invention, it is possible to avoid a step or a gap between the molding surface of the fixed mold and the molding surface of the rotary mold, and it is possible to prevent molding defects when molding a panel. This can be prevented, and the tolerance between the dies during rotation of the rotary die between the processing position and the non-processing position can be increased, thereby facilitating the manufacture of the die.

[Brief description of the drawings]

FIG. 1 is a plan view of a lower die unit of a press die apparatus showing an embodiment of the present invention.

FIG. 2 is a sectional view of the mold apparatus taken along the line II-II in FIG.

FIG. 3 is a cross-sectional view showing a state in which a rotary mold of the mold apparatus shown in FIG. 2 has moved to a processing position.

FIG. 4 is a cross-sectional view showing a state where an upper mold of the mold apparatus shown in FIG. 2 is lowered to an intermediate position.

FIG. 5 is a cross-sectional view of a state where the upper mold of the mold apparatus shown in FIG. 2 has been lowered to a lower end;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Panel 1a ... Edge 10 ... Die apparatus 12 ... Upper mold 15 ... Fixed mold 17 ... Rotary mold 20 ... Molding surface 27 ... Driving mechanism (drive means) 30 ... Molding surface 35 ... Pad 40 ... Movable mold 51 ... First 1 support surface 52 ... second support surface 61 ... first receiving surface 62 ... second receiving surface

Claims (1)

[Claims] 1. A fixed mold having a molding surface with which a panel contacts, a rotary mold provided rotatably about an axis on the fixed mold and having a molding surface with which the panel contacts when in a processing position, A pad that is provided on the upper die and sandwiches the panel between the fixed die and each molding surface of the rotary die; and the upper die in a state where the panel is sandwiched between the pad and each of the molding surfaces. A movable die that bends an edge of the panel in cooperation with the rotary die by interlocking with the lifting and lowering of the first die.
Forming a second support surface extending in a direction different from the support surface;
The first support surface and the second support surface are so formed that the molding surfaces of the fixed die and the rotary die are continuous with each other when the rotary die is moved to the processing position.
A press die apparatus comprising a first receiving surface and a second receiving surface that respectively contact the support surface.