JPH04259539A - Method for adhering cover skin material to base - Google Patents

Abstract

PURPOSE:To attach a cover skin material to a base adhesively in a simple and efficient working manner and also prevent the cover skin material from becoming damaged during adhering process. CONSTITUTION:A cover skin material 8 is retained in space using a plate 20 with a clamp 23 next, a base 2 is squeezed into the cover skin material 8 in an almost vertical direction and is bonded together with the latter. Further, the plate 20 is moved in an inner direction, and a base 2 is caused to ascend, so that the rear 4 of the base is caused to come in contact with the pressure part 26 of the plate 20 under pressure through the cover skin material 8 and the fold-back part of the cover skin material is allowed to stick to the base. A receiving mold is no longer required and need not be manufactured for each base without application of a pressure to the surface of the cover skin material. In addition, the terminal processing of the cover skin material can be done concurrently.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a skin material to a base material molded from a synthetic resin, for example in the production of interior parts for automobiles.

0003

2. Description of the Related Art FIGS. 13 and 14 show a front pillar garnish 1 used as an interior part of an automobile.

[0004] This front pillar garnish 1 is made by attaching a skin material 8 to a base material 2 molded from synthetic resin via an adhesive.The skin material 8 covers not only the surface 3 of the base material 2 but also
As a terminal treatment, the outer skin material is pasted on the back side edge 5 of the base material 2 and then pasted on the back side peripheral part 6 of the base material 2 by folding back the peripheral part 9 of the skin material.

[0005] As a method of attaching a skin material to a base material in this way, when manufacturing a pillar garnish, there is
In the method disclosed in Publication No. 3-193819, the skin material is placed along the inner surface of the recess of the lower mold by preforming, etc., and the base material is fitted and fixed to the upper mold. The skin material is attached to the surface of the base material by lowering the upper mold, and after raising the upper mold once, move the slide plate (folding jig) on the surface of the lower mold from the outside to the inside. By moving the upper mold to the back side edge of the base material, the upper die is lowered again to fold and attach the peripheral part of the skin material to the rear peripheral part of the base material. ing.

[0006]

[Problems to be Solved by the Invention] In the case of the above-mentioned conventional method, after the skin material is attached to the surface of the base material by lowering the upper mold, the upper mold is temporarily lowered in order to treat the ends of the skin material. After that, the slide plate is moved inward to fold the skin material around the back side of the base material, and the upper mold is lowered again to adhere the skin material around the back side of the base material. , there is a problem that there are many steps and production efficiency is poor. Also, when the upper mold rises after pasting, the base material left on the lower mold lifts up.
After this, the movement of the slide plate is obstructed by the base material, and the skin material cannot be attached to the back side edge of the base material.
There is a problem that the slide plate or base material may be damaged.

Furthermore, in the case of the conventional method, in order to clamp the skin material between the base material and the lower mold, lower molds are required for each of the various shapes of the base materials, which is expensive and requires a lot of effort. During clamping, the surface of the skin material comes into direct pressure contact with the lower mold, which causes a problem in that the surface of the skin material is damaged.

The present invention has been made in view of the above points, and includes a process of attaching the skin material to a base material and an end of the skin material by holding the skin material in a space using a plate having a clamp. The purpose is to perform processing reliably with fewer steps.

[Configuration of the invention]

0010

[Means for Solving the Problems] A method of attaching a skin material to a base material according to the present invention uses a plurality of plates each having a clamp for clamping the skin material and a pressing portion for pressing against the back surface of the base material, and uses the above-mentioned clamps. While holding the peripheral part of the skin material in the space and holding the skin material in the space, the base material is pushed and pasted in a substantially perpendicular direction to the skin material through the skin material. In the pressed state, the plate is projected to the back side of the base material, thereby folding the peripheral part of the skin material to the back surface of the base material, and in this folded state, the plate is projected through the skin material. The folded portion of the skin material is adhered by pressing the back surface of the material against the pressing portion of the plate.

[0011]

[Operation] The method of attaching the skin material to the base material of the present invention is to push the base material in a substantially perpendicular direction to the skin material held in the space by a clamp provided on the plate, thereby attaching the skin material to the base material. Paste it on the surface of the above base material, and in this pressed state,
The plate is protruded from the back side of the base material, whereby the peripheral part of the skin material is folded back to the back surface of the base material, and in this folded state, the base material is pressed against the plate through the skin material. Thereby, the peripheral portion of the skin material is adhered to the back side end portion of the base material and the back surface peripheral portion of the base material.

0012

[Example] An example of the method of attaching a skin material to a base material according to the present invention will be described with reference to the drawings.

In FIGS. 1 to 12, reference numeral 10 indicates the entire sticking device, and 11 indicates a support frame that supports the entire sticking device 10. In FIGS. An upper substrate 12 is provided on the upper part of the support frame 11, and a horizontal plate support frame 13 that supports a pair of plates 20 and the like is provided at an intermediate position in the vertical direction.

Rack rails 31 that mesh with gear wheels 30 rotatably attached to each plate 20 are disposed on two opposing sides of the plate support frame 13. A pair of opposing plates 20 are mounted thereon via gear wheels 30. Each plate 20 has four gear wheels 30,
Driven by plate cylinders 40 provided on the outside of the plates 20, inward direction (each plate 20
direction) and outward direction (direction in which each plate 20 approaches each other)
move back and forth in the direction in which the two move away from each other).

and the inward leading edge 2 of each plate 20.
1 is provided with clamps 23 for clamping the peripheral portion 9 of the skin material, and each clamp 23 is attached with a plurality of clamp release parts 24 that are activated by electrical signals.
The clamp 23 is released by operating the clamp release section 24. Further, a pressing portion 26 is formed on the lower surface of the front portion of the plate 20 in accordance with the shape of the back surface 4 of the base material.

A slide shaft 42 is inserted through the substantially central portion of the upper substrate 12 so as to be movable up and down. A suction pad 43 for the back surface 4 of the base material is attached to the lower end of the slide shaft 42, and a suction device (not shown) sucks the base material 2 through a suction hole 44 drilled in the slide shaft 42. This base material 2 is held in space. These slide shafts 42 and suction pads 4
3 is vertically raised and lowered by an upper cylinder 41.

Further, at the lower part of the support frame 11, there is a sloped product in order to make it easier to take out the base material 2 (in this embodiment, the front pillar garnish 1) that has finished the adhesion process of the skin material 8 and falls from above. A take-out plate 48 is attached.

Next, the operation of this embodiment will be explained.

First, as shown in FIG. 2, the peripheral portion 9 of the skin material is clamped by each clamp 23 of a pair of opposing plates 20, and the skin material 8 is held in a space with its surface facing down. Above the skin material 8, the base material 2 is held in space by adsorbing it to a suction pad 43 with the surface 3 facing down. Note that, for example, an adhesive is applied in advance to the front surface 3, the back side edge 5, and the back surface peripheral portion 6 of the base material 2. In addition, in this case, the skin material 8
may be in a somewhat relaxed state rather than in a tense state.

Next, the slide shaft 42 is driven by the upper cylinder 41, and the slide shaft 42 and suction pad 43 are lowered.

Then, as shown in FIG. 3, the base material 2 comes into pressure contact with the back surface of the skin material 8 via the adhesive, and the slide shaft 42 further descends, so that the base material 2 is stuck to the skin material 8. The upper end of the back side end 5 of the base material 2 and the pressing part 2 of the plate 20 are pushed through the skin material 8 into the space below.
The upper cylinder 41 is stopped and the position of the base material 2 is temporarily held in a state where a certain distance a is created in the vertical direction between the upper cylinder 41 and the lower end 27 of the base material 2 .

Next, as shown in FIGS. 4 and 5, each plate 20 is moved inward by each plate cylinder 40, and the peripheral portion 9 of the skin material is folded back above the back surface 4 of the base material. The lower end 27 of the pressing portion 26 of each plate 20
passes through each back side edge 5 of the base material 2, and a certain distance b is created in the horizontal direction between the lower end 27 of the pressing part 26 of each plate 20 and each back side edge 5 of the base material 2. In this state, the upper cylinder 41 is operated, and the slide shaft 42 is raised while the base material 2 is adsorbed to the suction pad 43.

Then, when the slide shaft 42 is raised and each plate 20 is further moved inward, the skin material 8 is stretched and the peripheral portion 9 of the skin material is in a stretched state, as shown in FIG. It is pressed against the back side end 5 of the material 2 and pasted.

Then, as shown in FIG. 7, the slide shaft 42 is further raised, and the pressing portion 2 of each plate 20 is
The lower end 27 of 6 passes through each back side edge 5 on the inside of the base material 2, and is constant in the vertical direction between the lower end 27 of the pressing part 26 of each plate 20 and the back side edge 5 of the base material 2. With the interval c created, each clamp release section 24 is operated to release the skin material 8 from each clamp 23. Then, as shown in FIG. 8, the peripheral part 9 of the skin material moves between the back peripheral part 6 of the base material 2 and the pressing part 26 of the plate 20 while contracting.

Then, as shown in FIG. 9, by further raising the slide shaft 42, the pressing part 26 of the plate 20 and the back side peripheral part 6 of the base material 2 are removed via the skin material 8.
By this, the peripheral part 9 of the skin material and the base material 2 are brought into pressure contact with each other.
Attach the peripheral part 6 of the back side.

Then, as shown in FIG. 10, the base material 2 to which the skin material 8 is attached is separated from the suction pad 43 and dropped downward. Then, the completed front pillar garnish 1 is discharged to the outside of the adhesion device 10 through the product ejection port 49 using the product ejection plate 48 shown in FIG. 1, and one process of adhesion is completed.

[0027] As the skin material 8 of the present invention, fabrics such as tricot and moquette, polyvinyl chloride sheets, etc. are suitable. Appropriate properties of the skin material 8 are those that can be stretched at room temperature or when heated. In this case, by attaching a heater for the skin material 8 to the pasting device 10, the skin material 8 can be easily stretched and at the same time the adhesive effect of the adhesive can be increased.

Furthermore, if the skin material 8 is relatively difficult to stretch, or if stretching causes damage to the appearance, etc., after going through the steps shown in FIGS. 1 to 5 described above, as shown in FIG. Raise the slide shaft 42,
The skin material 8 is brought into pressure contact with the back side end 5 and a part of the back side peripheral part 6 of the base material 2 by the pressing part 26 of the plate 20, and is adhered. Then, as shown in FIG. 12, the clamp 23 is released,
The peripheral part 9 of the skin material is released from the clamp 23, each plate 20 is moved inwardly, and the slide shaft 4
Raise 2. Then, after that, FIGS. 8 to 10
As shown in the above embodiment, the pressing part 26 of the plate 20 and the back surface peripheral part 6 of the base material 2 are brought into pressure contact with each other through the skin material 8, and thereby the back surface peripheral part 6 of the base material 2 and the skin The peripheral portion 9 of the material is adhered, and the base material 2 to which the skin material 8 is adhered is separated from the suction pad 43.

The embodiments of the present invention are not limited to the embodiments described above; for example, the target product is not limited to the front pillar garnish 1, but may be other products.

Further, the pressing portion 26 of the plate 20 can be formed as a separate member, and in this case, the skin material 8 can be adhered more favorably by using a soft elastic material that is more easily deformed than the base material 2.

[0031]

[Effects of the Invention] According to the method of attaching a skin material to a base material of the present invention, the base material is pushed in a substantially perpendicular direction to the skin material held in a space by a clamp provided on a plate. The skin material is pasted on the surface of the base material, and in this pressed state, the plate is protruded from the back side of the base material, whereby the peripheral part of the skin material is folded back to the back surface of the base material. In the folded state, the base material is pressed and adhered to the plate through the skin material, whereby the peripheral part of the skin material is attached to the back side edge of the base material and the back surface peripheral part of the base material. It is attached to. Therefore, compared to conventional methods, the number of steps is far fewer, it is possible not only to attach the skin material to the surface of the base material, but also to process the ends, and there is no need for a lower mold that corresponds to the base material. Therefore, it can be used with a wide variety of base materials, is highly versatile, requires less capital investment, and can improve production efficiency.

Furthermore, since the base material is held during the adhesion process, there is no possibility that the base material will lift up and interfere with the plate.

Furthermore, since the present invention does not use a lower mold, the surface of the skin material is brought into pressure contact with the lower mold, so that no damage occurs and a good appearance can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a device showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a step of attaching a skin material to the base material.

FIG. 3 is a sectional view showing the next step in FIG. 2;

FIG. 4 is a sectional view showing the next step of FIG. 3;

FIG. 5 is a sectional view showing the next step of FIG. 4;

FIG. 6 is a sectional view showing the next step of FIG. 5;

FIG. 7 is a sectional view showing the next step of FIG. 6;

FIG. 8 is a sectional view showing the next step of FIG. 7;

FIG. 9 is a sectional view showing the next step of FIG. 8;

FIG. 10 is a sectional view showing the next step of FIG. 9;

FIG. 11 is a cross-sectional view of a process showing another embodiment of the present invention.

FIG. 12 is a sectional view showing the next step of FIG. 11;

FIG. 13 is a perspective view of a product to which the present invention is applied.

FIG. 14 is a sectional view taken along line AA of the product shown in FIG. 13;

[Explanation of symbols]

2 Base material 4 Back side of base material 8　　　Skin material 9 Peripheral area of skin material 20 Plate 23 Clamp 26 Pressing part

Claims (1)

[Claims] 1. A method for attaching a skin material to a base material, the method using a plurality of plates each having a clamp for holding the skin material and a pressing portion for pressing against the back surface of the base material. While holding the peripheral portion and holding the skin material in the space, press the base material through the skin material in a substantially perpendicular direction to the skin material, and in this pressed state, The plate is protruded from the back side of the base material,
As a result, the peripheral part of the skin material is folded back to the back surface of the base material, and in this folded state, the back surface of the base material is pressed against the pressing part of the plate through the skin material, and the folded part of the skin material is pressed. A method for attaching a skin material to a base material, the method comprising: attaching a skin material to a base material.