JP2600475B2 - Panel cutting molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a panel cutting and forming machine, and is effective when applied to manufacture of a lower quarter inner panel in a vehicle requiring durability.

<Conventional Technology> The four-wheel drive vehicle 1 as shown in FIG. 5 requires vehicle durability. For this reason, the lower quarter panel 2 is integrally kept rigid from the side surface to the rear surface.

FIG. 6 is a perspective view of the lower quarter panel 2, FIG. 7 is a view taken along line VII-VII of FIG. 6, and FIG. 8 is a view of VIII-VI of FIG.
The arrow II is shown.

The lower quarter panel 2 includes a lower quarter inner panel (inner panel) 3 and a lower quarter outer panel 4. The inner panel 3 has a fuel hole 6 for fixing a fuel pipe, a harness hole 7a through which a harness is inserted, and a trim. Various holes such as a trim hole 7b for fixing are formed. Reference numeral 8 in the drawing denotes a back door.

A procedure for manufacturing the above-described inner panel 3 will be described with reference to FIG.

First, as shown in FIG. 9 (a), a tire house portion 5 is formed on the inner panel 3, and then, as shown in FIG. 9 (b), a side edge portion 3a serving as a rear surface portion is formed by a forming machine. Bend and form. Further, as shown in FIG. 9 (c), the inner panel 3
Is cut by a cutter to finish the inner panel 3 to a predetermined size, and finally, holes such as a harness hole 7a and a trim hole 7b are made.

As described above, the inner panel 3 which is required to have durability and has a complicated shape is manufactured with high precision in all four steps.

<Problems to be Solved by the Invention> Conventionally, since the inner panel 3 is manufactured in four steps, labor and time are required besides actual processing such as attachment and detachment to a molding machine and a cutting machine. .

<Means for Solving the Problems> A configuration of the present invention for solving the above problems is a panel cutting and forming machine that cuts a side edge portion of a panel and simultaneously bends and forms a side edge of the panel. An upper die holder that can move up and down with respect to the die holder; and a gas spring having a main body attached to the lower surface of the upper die holder and a working rod being urged toward the lower die holder by a gas sealed in the main body. An upper pad which is urged toward the lower die holder by being attached to the operating rod of the gas spring, and which is provided on the upper surface of the lower die holder so as to face the pad, and A lower punch for holding the panel between the upper pad urged by a gas spring, a lower blade fixed to the lower mold holder, and the panel provided on the upper mold holder for holding the panel; An upper blade for cutting a side edge of the panel between the lower blade and the lower blade by lowering the upper die holder against a biasing force of the gas spring later; a lower die provided in the lower die holder; A side edge portion of the panel is provided in the upper die holder integrally with a blade, and a side edge of the panel is bent after the side edge is cut between the lower die and the lower die holder when the panel is cut. An upper die, and a punch formed in the upper die holder and perforating the panel by lowering the upper die holder when a side edge of the panel is bent and formed.

And a scrap stopper provided on the lower die holder for holding the cut piece of the cut side edge, and a lowering of the upper die holder provided on the upper die holder after the side edge of the panel is cut. And a scrap cutter for cutting the cut piece held by the scrap stopper.

<Operation> After disposing the panel at the predetermined positions of the upper die holder and the lower die holder, the upper die holder is lowered, whereby the panel is pressed by the upper pad, and further, the upper die holder is pressed against the urging force of the gas spring. By lowering, the side edge of the panel is cut by the lower blade and the upper blade, and at the same time, the side edge of the panel is bent by the lower die and the upper die, and the hole is punched by the punch.

Further, the cut pieces held by the scrap stopper are simultaneously cut by the scrap cutter, and the scrap processing is performed.

<Example> FIG. 1 shows a partially cut-away side view of a panel cutting and forming machine according to one example of the present invention.

In the figure, reference numeral 11 denotes a lower die holder, and a lower punch 12 is provided on the lower die holder 11, and an inner panel 3 as a panel is mounted on the lower punch 12. A lower trim die 13 as a lower blade is fixed to a side end of the lower die holder 11, and a lower die 14 for bending is provided inside the lower trim die 13 of the lower die holder 11.

On the other hand, an upper die holder 15 is provided on the upper part of the lower die holder 11 so as to be vertically movable, and an upper pad 17 is mounted on a lower surface of the upper die holder 15 via a gas spring 16. That is, the main body 16a of the gas spring 16 is attached to the lower surface of the upper die holder 15, gas is sealed in the main body 16a of the gas spring 16, and the operating rod 16b is urged toward the lower die holder 11 by the sealed gas. Have been. And gas spring 16
An upper pad 17 is attached to the operating rod 16b, and the upper pad 17 is in a state of being urged toward the lower mold holder 11 via a gas spring 16. A cutting punch 18 as an upper blade is fixed to the upper die holder 15 above the lower trim die 13, and a bending forming punch 19 corresponding to the lower die 14 is provided to the upper die holder 15 above the lower die 14. ing.

Lower trim die 13 and cutting punch by lowering upper die holder 15
Before 18 contacts, the upper pad 17 presses the lower punch 12,
Further, the upper die holder 15 descends against the upper pad 17 against the urging force of the gas spring 16, and the lower die 14 and the bending punch 19 are pressed against each other.

In the drawings, reference numeral 20 denotes a piercing punch as a punch, 21 denotes a piercing die, 22 denotes a scrap cutter for cutting cut pieces, and 23 denotes a scrap stopper pin.

Next, the operation of the cutting and forming machine having the above configuration will be described with reference to FIGS. 1 to 4 show a partially broken side view of the cutting and forming machine. FIG. 1 shows a state before processing, FIG. 2 shows a state after cutting, FIG. 3 shows a state during bending, and FIG. Indicates a state at the time of completion of processing.

As shown in FIG. 1, the inner panel 3 is
When set in the upper predetermined position and lowering the upper mold holder 15,
As shown in FIG. 2, immediately after the inner panel 3 is pressed by the upper pad 17 and the lower punch 12, the lower trim die 13 and the
18 oppose each other across the side edge 3b of the inner panel 3.

When the upper die holder 15 is further lowered, the upper die holder 15 is lowered against the upper pad 17 against the urging force of the gas spring 16 as shown in FIG.
Between 18, the side edge 3 b of the inner panel 3 is cut. When the upper die holder 15 reaches the lower end, as shown in FIG. 4, the inner panel 3 is clamped between the lower die 14 and the bending punch 19 to bend the side edge 3a. At the same time, drilling is performed by the piercing punch 20, and the cut pieces held by the scrap stopper pins 23 are cut by the scrap cutter 22.

The above-mentioned cutting molding machine uses the upper pad 17 as a gas spring.
Because it is supported via 16, the stroke amount of the upper pad 17 can be sufficiently secured so that the molding amount (molding depth) from cutting to molding becomes large, and the pressing force by the upper pad 17 is required It is possible to secure the amount and prevent deformation of the hole near the molded portion.

Therefore, the inner panel 3 can be clamped and held by a desired pressing force over a long stroke from cutting to forming and drilling, and the forming depth can be set to a large value.
Three processes can be performed with a stroke. Further, the processing of the cut pieces can be simultaneously performed by lowering the upper die holder 15. Further, the present invention can be applied to processing with a relatively deep molding amount.

Therefore, according to the above-described cutting and forming machine, the cutting of the side edge 3b of the inner panel 3, the bending of the side edge 3a, and the three processes of drilling various holes can be simultaneously performed by lowering the upper die holder 15 once. Further, even the scrap processing can be performed automatically, and press productivity can be improved.

<Effects of the Invention> According to the panel cutting and forming machine of the present invention, from the cutting of the side edge of the panel to the bending of the side edge and the drilling can be simultaneously performed by lowering the upper die holder once, and three steps can be performed. Processing becomes possible at once. As a result, the number of processing steps for the panel can be reduced, so that the cost of the mold and the processing time can be reduced. In addition, even the scrap can be automatically cut to enhance press productivity.

[Brief description of the drawings]

1 to 4 are partially cutaway side views of a panel cutting and forming machine according to one embodiment of the present invention, FIG. 5 is a side view of a four-wheel drive vehicle, and FIG. 6 is a perspective view of a lower quarter inner panel. Fig. 7
The figure is a view taken along line VII-VII in FIG. 6, and FIG. 8 is a view VIII in FIG.
FIG. 9 is a view showing a manufacturing process of the conventional inner panel taken along line VIII-VIII. In the drawing, 3 is a lower inner quarter panel (inner panel), 3a is a side edge, 3b is a side edge, 11 is a lower die holder, 12 is a lower punch, 13 is a lower trim die, 14 is a lower die, and 15 is an upper die. A mold holder, 17 is an upper pad, 18 is a cutting punch, and 19 is a bending punch.

Claims (2)

(57) [Claims] 1. A panel cutting and forming machine for cutting a side edge of a panel and simultaneously bending a side edge of the panel, the upper die being movable up and down with respect to a lower die holder; A gas spring in which a main body is attached to the lower surface of the holder and a working rod is urged toward the lower mold holder side by gas sealed in the main body; and the lower mold holder is attached to the operating rod of the gas spring. Between the upper pad urged to the side and the upper pad provided on the upper surface of the lower mold holder facing the pad and urged by the gas spring by lowering the upper mold holder. A lower punch to be clamped; a lower blade fixed to the lower mold holder; and the upper mold holder provided in the upper mold holder and resisting the urging force of the gas spring after the panel is clamped. An upper blade that cuts a side edge of the panel between the lower blade and the lower blade; a lower die that is provided in the lower die holder; and a cutting of the panel that is provided in the upper die holder in an integrated state with the upper blade. An upper die for bending and forming a side edge of the panel after a side edge is cut between the lower die and the lower die by lowering the upper die holder, and a side edge of the panel provided on the upper die holder. A punch for punching a hole in the panel by lowering the upper die holder when a part is bent and formed. 2. A panel cutting and forming machine according to claim 1, wherein a scrap stopper provided on said lower die holder and holding a cut piece of said cut side edge; And a scrap cutter for cutting the cut piece held by the scrap stopper by lowering the upper die holder after the side edge of the panel is cut. .