JPH08197154A - Bending device for door skin - Google Patents

Abstract

PURPOSE: To adjust a pad to press a door skin in a short time in a bending device to bend the peripheral edge of the door skin of a vehicle door and bend an opening edge of an opening formed in a door handle part of the door skin. CONSTITUTION: A pad is split in a main pad 9 to be abutted on a general part of a door skin W and a sub pad 10 to be abutted on the periphery of a door handle part Wa. The sub pad 10 is abutted on the door skin W prior to the main pad 9, and the sub pad 10 is energized. A separate energizing means 10a from an energizing means 9a for the main pad is provided. When the opening edge of the door handle part Wa is bent by a punch 8, it is necessary to strongly and locally press the door handle part Wa so that no distortion may be generated in the periphery of the door handle part Wa, and the adjustment therefor is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for bending a door skin of a vehicle door, and more particularly to bending a peripheral edge of the door skin and bending an opening edge of an opening formed in a door handle portion of the door skin. Related to the device.

[0002]

2. Description of the Related Art Conventionally, when manufacturing a door skin for a vehicle door, after the door skin is draw-formed, a bend flange is formed on the periphery of the door skin to form a bending flange that serves as a hemming portion for hemming the door inner. are doing. In addition, the door skin is provided with a door handle part in which the door handle is recessed. In this case, when the door handle part is draw-molded, the material stretches differently from the general part of the door skin, and therefore, there is a gap around the door handle part. Foam is liable to be formed, and therefore, conventionally, it has been general to punch the opening in the door handle portion and bend the opening edge of the door handle portion when the peripheral edge of the door skin is bent.

[0003]

When the opening edge of the door handle is bent, it is necessary to locally strongly press the periphery of the door handle. Since the door skin is pressed by an integrated pad that is in contact with the surroundings, it is difficult to align the pads and it takes a lot of time to adjust them. The present invention has been made in view of the above points, and an object thereof is to shorten an adjustment time in a door skin bending apparatus.

[0004]

In order to achieve the above object,
The present invention is a device for bending a peripheral edge of a door skin of a vehicle door, including a punch that bends an opening edge of an opening formed in a door handle portion of the door skin, and a pad that abuts on the door skin. The pad is divided into a main pad that contacts the general part of the door skin and a sub pad that contacts the periphery of the door handle part, and the sub pad is configured to contact the door skin prior to the main pad, and the sub pad is biased. A biasing means different from the biasing means for the main pad is provided.

[0005]

The periphery of the door handle portion that needs to be strongly pressed locally is pressed by a subpad other than the main pad that abuts on the general part of the door skin, and the pressing force is also applied to the general part by the biasing means for the subpad. It can be adjusted separately from the pressing force. Therefore, it becomes easy to balance the pressing force with respect to the general part and the pressing force with respect to the periphery of the door handle part, and the time required for pad adjustment is shortened.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an apparatus for performing a bending process on a peripheral edge of a door skin W shown in FIG. 3 and a bending process on an opening edge portion of an opening formed in a door handle portion Wa of the door skin W.

The apparatus comprises a lower mold 1 and an upper mold 2 which is moved up and down by a ram (not shown). The lower mold 1 is provided with a recess 3a which supports a door skin W and which matches a door handle Wa. The fixed die 3 and the movable die 4 that receives the peripheral edge of the door skin W are provided, and when the door skin W is set, the fixed die 3 is fitted into the opening Wb of the door handle portion Wa and the door skin W
The locating pin 5 for locating is inserted into the main die 3 so as to be vertically movable and urged upward by the urging means 5a.

The movable die 4 is a slider 6 provided on the lower die 1.
It is fixed to. The slider 6 is slidable between an inner position on the fixed die 3 side and an outer position regulated by a stopper 6a fixed to the lower mold 1, and a cam 6b vertically provided on the upper mold 2 lowers the upper mold 2. At the same time, the slider 6 is pushed to the outer position against the biasing means (not shown), and the movable die 4 is moved from the inner retracted position to the molding position that matches the peripheral edge of the door skin W.
The upper die 2 has a punch 7 for bending the periphery of the door skin W in cooperation with the movable die 4, and a recess 3a of the fixed die 3.
A punch 8 for bending the opening edge of the door handle portion Wa in cooperation with the punch 8 and a pad for pressing and sandwiching the door skin W between the fixed die 3 and the movable die 4 are provided.

The punch 7 is supported by the upper die 2 slidably inward against a biasing means (not shown), and is inwardly moved by a cam 7a fixed to the slider 6 when the upper die 2 descends. Is pushed,
The periphery of the door skin W is bent so as to be sandwiched between it and the movable die 4 located at the molding position.

The punch 8 is fixed to the upper die 2, contacts the positioning pin 5 when the upper die 2 descends and pushes down the positioning pin 5, and the opening edge of the door handle portion Wa into the recess 3a of the fixed die 3. Bend it as if you were pushing it in.

The pad is a main pad 9 made of cast iron, for example FC25, which comes into contact with the general portion of the door skin W.
And a sub pad 10 made of cast iron, for example, FC30, which is in contact with the periphery of the door handle portion Wa, and the main pad 9 is constituted by a biasing means 9 such as a urethane spring.
The sub-pad 10 is urged downward by a, and the sub-pad 10 is urged downward by an urging means 10a different from the urging means 9a.
In this embodiment, the urging means 10a is composed of a cushion rod having a built-in spring and capable of adjusting the urging force.

The subpad 10 is, as clearly shown in FIG.
The sub-pad 10 is slidably fitted in a through hole 9b formed in the main pad 9, the upper portion of the sub pad 10 is formed to have a larger diameter than the through hole 9b, and the lower surface of the large diameter portion 10b is normally the upper surface of the main pad 9. The sub pad 10 slightly protrudes below the main pad 9 in this state.

Thus, when the upper die 2 is lowered, first, as shown in FIG. 2A, the sub pad 10 is moved to the door handle portion W.
Then, the main pad 9 contacts the general part of the door skin W, and then the punch 8 bends the opening edge of the door handle part Wa as shown in FIG. 2B.

During this bending process, the door handle W
Distortion is likely to occur around a. Therefore, it is necessary to locally strongly press the periphery of the door handle portion Wa. However, with the integrated pad, the pressing force is applied so as not to cause distortion around the door handle portion Wa. It is difficult to keep the balance, and it takes time to adjust the pads. On the other hand, if the sub-pad 10 is provided as in the above embodiment and is biased by the biasing means 10a different from the biasing means 9a for the main pad 9, the pressing force of the sub-pad 10 is pushed. It can be adjusted separately from the pressure. The pressing force can be easily balanced by adjusting the protrusion amount of the sub pad 10 with respect to the main pad 9 and the biasing means 10a, and the pad can be adjusted in a short time.

The protruding amount of the sub pad 10 with respect to the main pad 9 can be adjusted by inserting a shim between the lower surface of the large diameter portion 10b of the sub pad 10 and the upper surface of the main pad 9. In addition, reference numeral 11 in the drawing is a retainer provided for preventing the sub pad 10 from falling off from the main pad 9 when the pad is turned upside down in the pad assembling process and the adjusting process.

[0016]

As is apparent from the above description, according to the present invention, the pads can be adjusted in a short time, the apparatus can be started up early, and the productivity is improved.

[Brief description of drawings]

FIG. 1 is a cutaway side view of an example of a device of the present invention.

2A and 2B are enlarged cutaway side views of a main part for explaining the operation.

[Figure 3] Front view of the door skin

[Explanation of symbols]

W door skin, Wa door handle portion Wb opening, 8 punch 9 main pad, 9a biasing means for main pad 10 subpad, 10a biasing means for subpad

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Itaro Ota 1-10-1 Shin-Sayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd.

Claims (1)

[Claims] 1. A device for bending a peripheral edge of a door skin of a vehicle door, comprising a punch for bending an opening edge of an opening formed in a door handle portion of the door skin, and a pad abutting on the door skin. , The pad is divided into a main pad that contacts the general part of the door skin and a sub pad that contacts the periphery of the door handle part,
A device for bending a door skin, characterized in that the sub pad is configured to come into contact with the door skin prior to the main pad, and an urging means different from the urging means for the main pad for urging the sub pad is provided. .