JPH0340428Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a door trim manufacturing apparatus used for efficiently manufacturing door trims for automobiles.

(Prior art) In the manufacturing process of automobile door trims,
There are two steps: caulking an upper base for attaching a weather strip to a board-like base material formed into a predetermined shape, and punching out door locking button holes in the upper base and the base material. Conventionally, after caulking the upper base to the base material using a caulking device consisting of an upper die and a lower die, for example,
- Door locking button holes were punched out using an annular blade as shown in Publication No. 76015, but since two machines were required, the equipment cost and installation space were large, and the transportation between them was However, there was a problem in that the number of man-hours increased due to the need for positioning.

(Problems to be solved by the invention) The present invention solves these conventional drawbacks and includes a process of caulking the upper base to the base material, and a process of punching a door locking button hole at the end of the base material. This was completed with the aim of creating a door trim manufacturing device that can significantly reduce the number of processing steps by simultaneously performing the following steps with one device.

(Means for Solving the Problems) The door trim manufacturing apparatus of the present invention, which attempts to solve the above-mentioned problems, comprises an upper base on which a caulking portion having a crown-shaped pawl is formed, and a height of the pawl of the caulking portion. After the upper mold is lowered, it advances into either or both of the lower mold, on which a thin base material is set on the upper surface, and the upper mold, which presses them to caulk the upper base to the base material. It is characterized by a punch for punching and trimming the required parts of the material, a base material presser biased by a spring on the upper mold plate side, and a back stopper for supporting the base material on the lower mold plate side. That is.

(Embodiments) Next, the present invention will be described in detail with reference to illustrated embodiments.

1 is a lower mold attached to a lower mold plate 2, 3
5 is the upper die attached to the upper die plate 4; 5 is the guide post attached to the lower die plate 2; 6 is the guide post attached to the lower die plate 2;
a guide post receiver 7 that engages with the guide post 5 provided at a corresponding position on the upper die plate 4;
9 is provided on the lower mold plate 2 side and supports the lower surface of the base material 40 pressed by the base material holder 7. This is a backstopper.

As shown enlarged in FIGS. 2 and 3, the lower mold 1 is for supporting an upper base 30 and a base material 40 for attaching a weather strip on its upper surface. 30 with its crown-shaped claws is set on the lower mold 1 with the caulking portion 31 facing upward, and a base material 40 having a thickness thinner than the height of the nails of the caulking portion 31 is superimposed on the upper surface of the upper mold. 3 descends, the crown-shaped claw caulking part 31 of the upper base 30 sticks into the base material 40 and tries to make the tip of the claw protrude from the surface of the base material 40, but the claw trying to protrude is prevented by the upper die 3. As shown in FIG. 3, the upper base 30 is bent outward and the base material 40 is
It will be scorched.

In the present invention, such a lower mold 1 and an upper mold 3 are used.
A punch 10 for punching and trimming is provided on one or both of the. In this embodiment, the punch 10 is provided inside the upper mold 3 and has a circular cross section.
When hydraulic oil is supplied to 1, it protrudes downward from the lower surface of the upper mold 3, and when the hydraulic oil is discharged, it retreats into the inside of the upper mold 3 by the force of the return spring 12, as shown in FIG. It's summery. On the other hand, a punch hole 13 corresponding to this punch 10 is formed in the lower mold 1. This punch hole 13 is used to perform punching and trimming by shearing the upper base 30 and the base material 40 with the punch 10, and is used to discharge the punched piece 41 below as shown in FIG. A diagonal hole 14 is provided. In the illustrated embodiment, the upper base 30 and the base material 40 are connected to the punch 10.
However, if the upper base 30 has a hole, it goes without saying that only the base material 40 is punched out. Note that 15 in Figure 1
1 is a base material positioning means whose position can be adjusted, and 16 is an ejector pin for pushing out the finished product.

(Function) In order to manufacture a door trim using the door trim manufacturing apparatus of the present invention configured as described above, first, as shown in FIG. The caulked part 31 is set facing upward, and the base material 40 is further set on the upper surface thereof. At this time, the base material 40 is accurately positioned by the base material positioning means 15. Next, when the upper mold plate 4 is lowered, the guide post receiver 6 engages with the guide post 5, and the base material presser 7 presses the base material 40 against the back stopper 9.
Press to position. Furthermore, upper mold plate 4
When the upper base 30 is lowered, the upper mold 3 bends outward the crown-shaped caulking portion 31 of the upper base 30 that is about to protrude from the base material 40, and caulks the upper base 30 to the base material 40. After the upper mold 3 descends and strongly presses the upper base 30 against the base material 40, the punch 10 built in the upper mold 3 advances by the action of the hydraulic cylinder 11, as shown in FIG. The required portions of the base material 40 are punched out and trimmed as shown in FIG. The punched piece 41 is discharged from the diagonal hole 14, and then the upper die 3 is raised together with the upper die plate 4, and the finished product is taken out using the ejector pin 16.

(Effects of the invention) As is clear from the above explanation, the present invention has a punch for punching and trimming on one or both of the upper and lower molds for caulking the base material to the upper base. In addition to being able to perform caulking and punching trimming of the par base at the same time, accurate caulking can be performed by caulking the claw end of the caulking part outward with the upper die, which has a crown-shaped claw formed on the upper base. Moreover, since the base material is supported and caulked by a base material presser biased by a spring on the upper mold plate side and a back stopper provided on the lower mold plate side, the base material during caulking is There is no displacement of the material and the upper base, and trimming is performed with the base material and the upper base being strongly pressed by the upper die, so punching and trimming can be performed without shifting both members.

In this way, the present invention can simultaneously complete two processes that were conventionally performed separately by two machines, and can reduce the manufacturing cost of door trims, thus solving the problems of the conventional method. As a door trim manufacturing device that solves these problems, it has great practical value.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the main part showing a state in which the upper die is raised, and Fig. 3 is a sectional view of the main part showing the state during punching and trimming. FIG. 1: lower mold, 3: upper mold, 10: punch, 30: upper base, 31: caulking part, 40: base material.

Claims (1)

[Scope of utility model registration request] A lower mold 1 has an upper base 30 on which a caulking portion 31 with a crown-shaped pawl is formed, and a base material 40 whose thickness is thinner than the height of the pawl of the caulking portion 31 are set on the upper surface, and these are pressed and heated. A punch 10 is provided on one or both of the upper mold 3 for caulking the par base 30 to the base material 40, and the punch 10 is provided on either or both of the upper mold 3 and the upper mold 3 for punching and trimming required portions of the base material 40 after the upper mold 3 is lowered. A door trim manufacturing apparatus characterized in that a base material presser 7 urged by a spring 8 is provided on the plate 4 side, and a back stopper 9 for supporting the base material is provided on the lower die plate 2 side.