KR20030005850A - Drawing die structure for working panel for vehicles - Google Patents

Abstract

PURPOSE: A drawing die structure is provided to produce a body panel of an automobile in a single action press and a double action press. CONSTITUTION: A drawing die structure of panel processing comprises a die(31), a punch(32) and a blank holder(33). The die has a first die surface(31a) in upper center portion to form a body panel of automobile. The die is an upper body in a single action press, and a lower body in a double action press. The punch has a second die surface(32a) in lower center portion to match with the first die surface. The blank holder is installed in the edge of the punch moving up and down to match with the upper surface of the die, thereby supporting body panel.

Description

Drawing die structure for panel processing of vehicle {DRAWING DIE STRUCTURE FOR WORKING PANEL FOR VEHICLES}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing die structure for panel processing of a vehicle, and more particularly, to an improved vehicle for producing a product in a single action press and a double action press. A drawing die structure for panel processing.

As shown in FIGS. 1A-1D, the drawing die structure in a single action press comprises a lower die 11, an upper die 12, and a blank holder 13 to move the up and down movements of these configurations. The predetermined product is molded.

More specifically, first, as shown in FIG. 1A, the steel plate 14 to be molded is introduced into the mold, the upper die 12 is lowered, and the blank holder 13 is raised. Subsequently, as shown in FIG. 1B, the upper die 12 continues to descend, the blank holder 13 stops and the iron plate is placed on the upper surface of the blank holder 13.

1C, the die 12 and the blank holder 13 are lowered while the die face of the upper die 12 and the die face of the blank holder 13 hold the iron plate 14. . In addition, as shown in FIG. 1D, the upper mold 12 and the lower mold 11 are completely matched to complete the product. At this time, the blank holder 13 is raised or lowered by the cushion pad 16 in the bolster 15.

In contrast, the structure of the drawing die in the double action press as shown in FIGS. 2A-2D is comprised of a lower die 21, an upper die 22, and a blank holder 23 to provide a single action as described above. It is the same as a press, but differs in structure and molding method.

More specifically, first, as shown in FIG. 2A, the iron plate 24 is introduced into the mold, and the blank holder 23 is lowered. Then, as shown in FIG. 2B, the iron plate 24 is placed on the upper surface of the blank holder 23, and the blank holder 23 and the upper die 22 are lowered.

As shown in FIG. 2C, the die surface of the lower mold 21 and the die surface of the blank holder 23 hold the iron plate 24 and the upper mold is lowered. Also, as shown in FIG. 2D, the upper mold 22 and the lower mold 21 are completely matched and the product is completed.

However, the mold structure is completely different according to the characteristics of the single action press and the double action press configured and operated as described above, and the mold designed for the single press is impossible to produce the body panel of the vehicle in the double action press, for example. However, molds designed for double action presses cannot produce the body panels described above in single action presses.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a drawing die structure for panel processing of a vehicle that enables the production of a vehicle body panel in a single action press and a double action press.

1A-1D show the structure and operation of a single action press.

2A-2D show the structure and operation of a double action press.

3 is a view schematically showing a drawing die structure for panel processing of a vehicle according to the present invention;

Fig. 4 shows the structure when the drawing die structure for panel processing of a vehicle according to the present invention is installed in a double action press.

Fig. 5 shows the structure when the drawing die structure for panel processing of a vehicle according to the present invention is installed in a single action press.

<Description of the symbols for the main parts of the drawings>

30. Body Panel

31.Die

32. Punch

33. Blank Holder

The drawing die structure for panel processing of the vehicle of the present invention for achieving the above object, in the drawing die structure for vehicle body panel processing of the vehicle for forming the vehicle body panel of the vehicle, so that the cross-sectional shape of the vehicle body panel can be molded A die formed such that the first upper surface of the center is concave, the upper die in a single action press, and the lower die in a double action press; A punch formed so as to face the die and having a second die bottom convex at the center thereof so as to be matched to form the vehicle body panel on the first die face so as to be upper and lower dies as opposed to the die; And a blank holder mounted on the edge of the punch so as to be movable up and down to match the upper surface of the die to support the base material of the vehicle body panel.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram schematically showing a drawing die structure for panel processing of a vehicle according to the present invention. Here, the description of the configuration of the general drawing die structure for panel processing of the vehicle is omitted, and only the configuration according to the features of the present invention will be described.

Referring to the drawings, the drawing die structure for panel processing of a vehicle according to the present invention is for shaping the vehicle body panel 30 of the vehicle, the center upper portion is concave so that the cross-sectional shape of the vehicle body panel 30 can be molded. A first die face 31a is formed, and is formed so as to face the die 31 formed as an upper die in a single action press, and a lower die in a double action press, and the die 31 so as to face the die 31. A second die face 32a is formed convexly in the lower part of the center so that the body panel 30 can be matched to one die 31a face so as to be formed into upper and lower dies as opposed to the die 31. And a blank holder 33 mounted on the edge of the punch 32 so as to be lifted and lowered to match the upper surface of the die 31 to support a base material, for example, an iron plate, of the vehicle body panel 30. .

First and second reinforcing plates 32b and 33b for reinforcing the structure when the double action press is used are installed on the punch 32 and the blank holder 33.

In addition, a punch riser 32c for reinforcing a structure is installed at the upper side of the punch 32 and the blank holder 33 when using a single action press as shown in FIGS. 3 and 5. .

Referring to the operation of the drawing die structure for panel processing of a vehicle according to the present invention having the configuration as described above is as follows. Here, the description of the operation of the general drawing die structure for panel processing of the vehicle will be omitted, and only the operation according to the features of the present invention will be described.

When the vehicle body panel 30 of the vehicle is to be molded in a double action press by using the drawing die structure for panel processing of the vehicle according to the present invention as shown in FIG. 30) can be molded.

On the other hand, reference numerals 41, 42, and 43, which are not described in FIG. 4, respectively indicate bolsters, inner slides, and outer slides.

When the body panel 30 of the vehicle is to be molded in a single action press, as shown in FIG. 5, the body panel 30 may be molded.

Meanwhile, reference numerals 51, 52, and 53 not described in FIG. 5 represent bolsters, cushion pads, and slides, respectively.

And since the drawing die structure for panel processing of the vehicle according to the present invention operates in the double and single action presses in the same manner as described in Figs. 1A to 2D, a detailed description of the operation will be omitted here.

As described above, the drawing die structure for panel processing of a vehicle according to the present invention has the following effects.

The drawing die structure, which enables the production of body panels of a vehicle at the same time in a single action press and a double action press, enables flexibility in responding to production line changes frequently caused by fluctuations in production volume.

In addition, since the double and single action presses do not need to be separately provided on the production line, the equipment can be reduced and the cost can be reduced.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (3)

In the drawing die structure for the vehicle body panel processing of the vehicle for molding the vehicle body panel of the vehicle, A die formed such that the first upper surface of the vehicle body panel is concave so as to form a cross-sectional shape, the upper die in a single action press and the lower die in a double action press; A punch formed so as to face the die and having a second die bottom convex at the center thereof so as to be matched to form the vehicle body panel on the first die face so as to be upper and lower dies as opposed to the die; And a blank holder installed on the edge of the punch so as to be movable up and down to match the upper surface of the die to support the base material of the vehicle body panel. The method of claim 1, And a reinforcing plate for reinforcing a structure when the double action press is used, on the punch and the blank holder, respectively. The method of claim 1, Drawing die structure for a panel processing of a vehicle, characterized in that the punch and a riser for reinforcing the structure when using the single action press on the upper side of the punch and the blank holder, respectively.