JPH0716668A - Press - Google Patents

Abstract

PURPOSE:To provide the press capable of realizing reduction of the number of stages and the equipment cost in performing trimming and boring from slantwise above the work. CONSTITUTION:Trimming to cut off the edge and boring from slantwise above the work are performed on the work W by cooperation of an upper die 1 and a lower die 2. An upper holder 3 to constitute the upper die 1 is provided with a sectional die 4 for trimming, a slide cam 6 provided with a punch 5 for boring slantwise is held movably horizontally with the tip direction of the punch 5 as the advancing side between the upper holder 3 and the sectional die 4 and the lower die 2 is provided with a die 9 on which the work W is mounted and a drive cam 10 to push and move the slide cam 6 to the advancing side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a panel-shaped work,
The present invention relates to a press device used for trimming and punching holes obliquely from above.

[0002]

2. Description of the Related Art A work W shown in FIGS. 5 and 6 is a trunk lid of an automobile and has an upper surface portion A and a rear surface portion B formed in a previous step, and thereafter an edge portion C is cut off. Trimming and drilling is performed on the rear surface B to form a mounting portion D of the high mount stop lamp.

The above work W is positioned in a state in which the rear surface portion B is inclined in consideration of good holding between upper and lower dies and releasability in press forming. Therefore, conventionally, trimming is performed using a general press die that cuts the edge portion C with upper and lower dies, and a press die having a cam mechanism is used to form the attachment portion D from an obliquely upper position. I was trying to make a hole.

[0004]

However, in the conventional press forming for the above-mentioned work, since the trimming and the drilling are performed in separate steps, there is a problem that the labor and the equipment cost are increased accordingly. The problem was to solve such problems.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above conventional problems, and realizes a reduction in the number of steps, a reduction in equipment cost, etc. when trimming a workpiece and punching holes obliquely from above. It is intended to provide a press device capable of

[0006]

A pressing device according to the present invention is a pressing device which cooperates with an upper die and a lower die to perform trimming for cutting an edge of a work and punching from a diagonally upper position. Then, a sectional die for trimming is provided on the upper holder that constitutes the upper die, and a slide cam obliquely provided with a punch for punching is advanced between the upper holder and the sectional die in the tip direction of the punch. As a side, the lower die holds the die horizontally, and the lower die has a die on which a work is placed, and a drive cam for pushing the slide cam to the forward side. As a means to solve

[0007]

In the pressing apparatus according to the present invention, when the work is placed on the lower die, the upper die is lowered,
The work is trimmed between the sectional dies and the slide cam moves forward while being held by the upper holder and the sectional die by contact with the lower drive cam. As a result, the punch obliquely provided on the slide cam moves toward the tip of the die as the slide cam moves forward as the upper die descends, and punches the work on the die from diagonally above. As described above, in the above-described pressing apparatus, trimming and punching from diagonally above are continuously performed in one step in one apparatus.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The work W in this embodiment is
Is the trunk lid (see FIGS. 5 and 6) of the automobile described in the section of the prior art.

The pressing device, as shown in FIGS.
By the cooperation of the upper mold 1 and the lower mold 2, the work W is trimmed and punched obliquely from above. Upper mold 1
Comprises an upper holder 3 attached to a slide of a press machine, a sectional die 4 for trimming, a slide cam 6 obliquely provided with a punch 5 for punching, and a pad 7 for fixing and pressing a work.

On the other hand, the lower die 2 is integrally provided with a die 9 on which a work W is placed on a lower holder 8 attached to a bolster of a press machine, and a drive having a cam surface 10a inclined upward inside the die. The cam 10 is provided. The work W has a top surface A and a rear surface B on the die 9.
Is tilted and positioned.

The sectional die 4 cuts off the lower edge C of the rear surface B of the work W on the die 9 and is a hanging portion (see each figure) provided on both sides of the upper holder 3. It is fixed in a suspended state between the lower parts of (only one side is shown) 11.

The slide cam 6 is housed between the hanging parts 11 of the upper holder 3, and the punch 5 has its tip further inside the die at the end on the inside of the die (left side in FIG. 1) on the forward side. Is provided in a tilted state toward the end of the mold on the retreat side, corresponding to the drive cam 10,
Cam part 1 having a cam surface 12a inclined downward to the outside of the mold
2 are hung vertically. The punch 5 punches a rear surface portion B of the work W on the die 9 so as to form a mounting portion D of the high mount stop lamp.

The slide cam 6 has overhanging portions (one side is shown in FIG. 2) 6a on both sides in the advancing / retreating direction, and the gib plate 13 fixed inside the upper holder 3 is provided.
Wear plates 14 to 16 are engaged between the upper surface and the side surfaces and the inner surface of the upper holder 3, and between the lower surface and the upper surface of the sectional die 4 while engaging the protruding portions 6a on the upper surface. Each is installed. As a result, the slide cam 6 is held horizontally between the upper holder 3 and the sectional die 4 with the tip end direction of the punch 5 being the forward side.

Further, the slide cam 6 is biased in the outside direction of the mold by springs (not shown), and its retracted position is restricted by a stopper 17 attached to the upper holder 3.

The pad 7 has an elastic body 18 on the upper holder 3.
Also, it is suspended via a pad retainer (not shown), and has an insertion hole 19 through which the punch 5 is inserted during processing.
Further, the die 9 is provided with an opening 20 through which the punch 5 is projected during processing. It should be noted that the upper mold 1 is at a position further above the position shown in FIG. 1 when the work W is carried in.

In the pressing device having the above-mentioned structure, when the work W is placed on the die 9, the upper die 1 is lowered,
After the work W is pressed and fixed by the pad 7 in accordance with the compression of the elastic body 18, as shown in FIG. 4, the die 9 and the sectional die 4 form the lower edge of the rear surface of the work W (see FIG. 1). (Denoted by symbol C) is cut.

On the other hand, the slide cam 6 is brought into contact with the drive cam 10 so as to be advanced in the mold direction while being held by the upper holder 3 and the sectional die 4.
As a result, the punch 5 obliquely provided on the slide cam 6 moves in the tip direction of the punch because the slide cam 6 advances as the upper die 1 descends, and the insertion hole 19 of the pad 7 is inserted. Through a hole in the rear surface B of the work W on the die 9 from diagonally above,
To form.

As described above, in the above-described pressing apparatus, the trimming for cutting the edge portion C in one step and the punching from the obliquely upper side for forming the attachment portion D are continuously performed in one apparatus. It will be.

In the above embodiment, the trimming is performed on the lower side of the rear surface B of the work W, but when the work C has an edge C on the entire circumference as shown in FIG. It is naturally possible to trim the entire circumference by using the frame-shaped sectional die.

[0020]

As described above, according to the press apparatus according to the present invention, when trimming and punching a workpiece obliquely from above, this can be performed by one apparatus in one step. In addition, it is possible to reduce the number of processes, the equipment cost, the cost, and the space occupied by the equipment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view illustrating a pressing device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view with one side omitted, which is taken along the line EE shown in FIG.

FIG. 3 is a bottom view of the upper die shown in FIG. 1 with one side omitted.

FIG. 4 is a cross-sectional view showing a state where the upper die has reached bottom dead center from the state of FIG.

FIG. 5 is a plan view of a trunk lid that is a work.

6 is a cross-sectional view based on the arrow F-F shown in FIG.

[Explanation of symbols]

 W Work 1 Upper mold 2 Lower 3 Upper holder 4 Sectional die 5 Punch 6 Slide cam 9 Die 10 Drive cam

Claims (1)

[Claims] 1. The work is made possible by the cooperation of the upper die and the lower die.
It is a press device that trims the edge portion and punches from diagonally above, and a sectioning die for trimming is provided on the upper holder that constitutes the upper mold,
Between the upper holder and the sectional die, a slide cam diagonally provided with a punch for punching is held so as to be able to move forward and backward horizontally with the tip direction of the punch as the forward side, and to the lower die,
A press device comprising a die on which a work is placed and a drive cam for pushing the slide cam forward.