JPH0324937A - Method and apparatus for bonding skin material - Google Patents

Abstract

PURPOSE:To automatically and continuously bond a skin material by injecting gas to the skin material from a gas pipeline to turn the peripheral edge part thereof to the rear of a base material and allowing the slide part of an upper inner mold to fall to bond the peripheral edge part of the skin material to the rear of the base material under pressure. CONSTITUTION:When a lower inner mold 12 and an upper inner mold 19 are allowed to fall in such a state that a base material 5 and a skin material 6 are pressed between both molds by the contraction of a cylinder 13 and the extension of cylinders 21, 22, the peripheral edge 6c of the skin material 6 is raised while drawn in the gap formed between the inner peripheral surface of a lower outer mold 10 and the outer peripheral surface of a slide part 19b. Continuously, only the cylinder 22 is contracted and only the slide part 19b is raised and, when gas is injected to the peripheral edge part 6c of the skin material 6 from a pressure source 35 through a gas pipeline 11, the peripheral edge part 6c of the skin material 6 is turned to the rear of the base material 5. When the slide part 19b is allowed to again fall in this state by the exten sion of the cylinder 22, the peripheral edge part 6c of the skin material 6 is bonded to the rear of the base material 5 under pressure to form a product 34 such as an interior material.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a skin material pasting method and apparatus for pasting a skin material to a base material such as plastic having strength as a part.

[Prior Art] Generally, in the case of automobile interior materials, etc., the product is made by laminating a skin material to a base material such as Branutik, which has the strength as a component. As an invention, for example, JP-A-59-1384
Those described in Publication No. 51 and JP-A-63-16512
There is one described in Publication No. 2.

The one described in Japanese Patent Application Laid-Open No. 59-138451 is
As shown in Figures (A) to Q\), the heat-plasticized base material 5 is set on the male die l in which the cutting block 3 is placed around the periphery of the convex part Ib on the flat part 1a, and Part 1b
After setting the skin material 6 on the female mold 2 in which a recess 2b that engages with is formed and a cutter 4 embedded in the flat part 2a, the female mold 2 is engaged with the male mold l and pressure is applied.
The base material 5 is shaped, and the skin material 6 is bonded to the surface of the base material 5 under tension, and the peripheral edge of the convex portion 1b of the base material 5 is cut by the cutting block 3 so as to be thinned. 6
Then, the outer periphery of the base material 5 is cut with a cutter 4, and an unnecessary portion 5° of the periphery of the base material 5 shown in FIG. 3 (opening) is removed, and then the skin material 6 is cut as shown in FIG. The peripheral edge of the base material 5 is wrapped around and bonded to the back surface of the base material 5.

On the other hand, as shown in FIGS. 4(a) to 4(a) to Q\), the one described in JP-A-83-L [f5122] has a base material 5 and a skin material 6 ( In this case, the end portion at the periphery of the interior material 7 consisting of the skin material 6 (including the cushion layer 6a and the skin layer 6b) is placed on a table (not shown) with the base material 5 side up, and the cutting blade 8
is lowered in the direction of arrow P using a pneumatic cylinder (not shown) to cut into the base material 5 by approximately the thickness of the base material 5, and in that state, the cutting blade 8 is moved toward the end side of the interior material 7, that is, in the direction of arrow Q.
After removing the unnecessary portion 5 at the peripheral edge of the base material 5 by peeling it off as shown in FIG. 4 (opening), the remaining skin material 6 is removed as shown in FIG. 4 (c). The peripheral edge of the base material 5 is wrapped around and bonded to the back surface of the base material 5.

[Problems to be Solved by the Invention] However, in the methods described in JP-A-59-138451 and JP-A-63-165122, the finishing method is such that the peripheral edge of the skin material 6 is wrapped around the back surface of the base material 5 and bonded. Since the process is carried out by workers or by hand, production efficiency is low, and since workers are required, there are problems such as the inability to achieve size savings.

In view of such circumstances, the present invention has been developed by bonding a skin material to a base material,
It is an object of the present invention to provide a method and apparatus for applying a skin material that can automatically and continuously perform the finishing process of wrapping and adhering the peripheral edge of the skin material onto the back surface of a base material.

[Means for Solving the Problems] This method invention has a lower mold consisting of a lower inner mold that can be raised and lowered and a lower outer mold that has a gas pipe, an upper inner mold that can be raised and lowered, and a cutter. A bondable skin material and a base material are set between an upper mold consisting of an upper outer mold, and the skin material is crimped onto the surface of the base material by lowering the upper mold, and the skin is removed by the cutter. The material is cut into a predetermined shape, the upper and lower inner molds are lowered to raise the peripheral edge of the skin material, and only the slide portion formed at the peripheral edge of the upper inner mold is raised. The peripheral edge of the skin material is rolled into the back surface of the base material by injecting gas from the path, and the peripheral edge of the skin material is crimped onto the back surface of the base material by lowering the slide portion of the upper inner mold again. In addition, the device invention provides a rod-shaped lower outer mold with a gas pipe connected to a pressure source and opening into the inner periphery of the lower outer mold, and connects the lower inner mold to the lower outer mold. The frame-shaped upper outer mold is inserted into the lower outer mold so that it can be raised and lowered, and the frame-shaped upper mold is positioned inward from the inner peripheral surface of the lower outer mold by an amount approximately equal to the thickness of the skin material. A cutter is provided directly above the mold so that it can be raised and lowered, and a cutter that can slide on the outer peripheral surface of the lower outer mold when the upper outer mold is lowered is attached to the outer peripheral surface of the upper outer mold. The present invention is characterized in that the upper mold is formed by fitting an upper inner mold, which is made up of a slide portion that is vertically and vertically fitted onto the outer periphery of the main body portion, into a vertically movable manner.

[Function] In the method and apparatus of the present invention, a lower mold includes a lower inner mold that can be raised and lowered and a lower outer mold that has a gas pipe, an upper inner mold that can be raised and lowered, and an upper outer mold that has a cutter. When the upper mold is lowered with the adhesive skin material and base material set between the upper mold and the upper mold, the skin material is crimped onto the surface of the base material and the cutter removes the skin material. After being cut into a predetermined shape, when the upper and lower inner molds are lowered, the periphery of the skin material is raised, and only the slide portion formed at the periphery of the upper inner mold is raised. When gas is injected from the gas pipe, the peripheral edge of the skin material is rolled up onto the back surface of the base material, and when only the slide portion of the upper inner mold is lowered again, the peripheral edge of the skin material is crimped onto the back surface of the base material. .

[Example] Embodiments of the present invention will be described below with reference to the drawings.

1(A) to 2(F) and FIG. 2 show an example of an apparatus for carrying out the method of the present invention, in which a frame-shaped lower outer mold 10 is installed on a fixed plate 9, and the lower outer mold A gas pipe line 1 connected to the pressure source 35 and opened to the inner peripheral surface of the lower outer mold 10 is connected to the IO.
A lower inner mold 12 is fitted into the lower outer mold 10 so as to be movable up and down by the drive of a cylinder 13 disposed on the fixed plate 9, thereby forming a lower mold 14.

The outer periphery of the upper surface of the lower inner mold 12 (the inner periphery of the upper surface of the lower outer mold 10) has a shape that is one size larger than the base material 5 by an amount that is approximately equal to the thickness of the skin material 6 attached to the base material 5. Furthermore, an inner cutter 15 is formed on the outer periphery of the upper surface of the lower outer mold IO to form a pair with a cutter l8 to be described later and to cut the skin material 6.

On the other hand, a movable plate 16 is disposed above the fixed plate 9 so as to be movable up and down by driving a cylinder or the like (not shown).
Immediately above the lower outer mold 10, a frame-shaped upper outer mold 17 whose inner circumferential surface is located inside the inner peripheral surface of the lower outer mold 10 by an amount approximately equal to the thickness of the skin material 6 is placed on the lower surface. A cutter l8 is attached to the outer circumferential surface 17a of the upper outer mold 17 and can slide on the outer circumferential surface of the lower outer mold lO when the upper outer mold l7 is lowered. , the upper inner mold 19 is fit into the upper outer mold 17 so as to be movable up and down, thereby forming the upper mold 20.

The upper inner mold 19 includes a main body 19a that is arranged to be movable up and down by the drive of a cylinder 2I attached to the lower surface of the movable plate 16, and a main body 19a that is attached to the lower surface of the movable plate 16 on the outer periphery of the main body 19a. Slide part 1 fitted so as to be movable up and down via support member 23 by driving of cylinder 22
9b, and the main body part 19a and the slide part 19b are formed with uneven parts 24a and 24b that engage with each other and prevent the lower surface of the slide part 19b from protruding downward from the lower surface of the main body part 19a. Further, at the upper part of the inner peripheral surface of the upper outer mold l7, the lower outer peripheral part of the slide part 19b is pulled upward from the lower surface of the upper outer mold l7 by an amount substantially equal to the thickness of the base material 5. A stopper 25 for restricting the upward movement of the slide portion 19b and the main body portion 19a is fixed.

Further, in the full part 26 formed at the lower inner circumference of the upper outer mold 17, a compression spring 27 causes the lower end to be formed into the previous full part 2.
A positioning member 28 is retractably inserted into the main body portion 19a for reliably setting the base material 5 according to the shape of the lower surface of the upper inner mold 19. , the main body part 1 is connected to a suction device (not shown).
A suction conduit 29 is formed that opens on the lower surface of 9a.

In the figure, 30.31 indicates a heater disposed inside the upper and lower inner molds 19.12, and 32 indicates a hole drilled in the support member 23 for passing through the rod of the cylinder 2l.

Next, the operation of the above embodiment will be explained.

As shown in FIG. 1(a), the cylinder 13 is extended and the lower inner mold 12 is raised to a position where the outer peripheral part of the upper surface thereof and the upper surface of the lower outer mold 10 coincide with each other.
1. Shrink 22 and slide the upper inner mold l9 into the slide part 19
b The movable plate 16 is raised to a position where its upper surface abuts the lower surface of the stopper 25, and the movable plate 16 is moved by driving a cylinder or the like (not shown).
With the upper mold 20 raised by the required amount together with the upper mold 20, an adhesive is applied to the back surface of the skin material (or an adhesive film that melts with heat is pasted) by a skin material introduction device (not shown). 6 into the lower mold 14J2 with the adhesive coated surface facing upward and set 1.

At this time, the lower inner mold 12 is heated so that the skin material 6 can easily adapt to the upper surface shape of the lower inner mold 12 (and if an adhesive film is used, the adhesive film can be melted). 3l to a predetermined temperature, and the upper inner mold 19 is also heated to a predetermined temperature by a heater 30.

Once the skin material 6 is set in the lower mold 14, the base material 5, which has been shaped into a predetermined shape, is introduced by a conveying device (not shown) so that its outer peripheral end abuts the positioning member 28, Air is sucked in from the opening of the suction pipe 29 by a suction device (not shown), and the base material 5 is sucked so as to follow the shape of the lower surface of the upper inner mold 19.

With the skin material 6 and the base material 5 set in the lower mold t4 and the upper inner mold 19, respectively, as shown in FIG. 1 (opening),
When the upper mold 20 is lowered together with the movable plate 16, the base material 5
is pressed down, and the skin material 6 is pressed onto the surface of the base material 5.

At this time, the cutter 18 and the inner blade l5 of the lower outer mold 10
The skin material 6 protruding from the outer periphery of the lower metal ffil 4 due to
' is cut off, and the skin material 6 is cut into a predetermined shape. Further, the positioning member 28 is stored in the groove portion 2B against the biasing force of the compression spring 27.

After the skin material 6 is cut into a predetermined shape, as shown in FIG. mama cylinder l
3 and the cylinders 21 and 22 expand, the skin material 6 peripheral edge 6c is drawn into the gap formed between the inner circumferential surface of the lower outer mold IO and the outer circumferential surface of the slide portion 19b. It will be launched. At this time, since the base material 5 is entirely sandwiched between the upper and lower inner molds 19 and 12, the peripheral edge of the base material 5 is prevented from being rolled up and deformed, and the peripheral edge of the skin material 6 is The start-up of the section 6c can be performed reliably.

When the peripheral edge 6C of the skin material 6 is completely raised, the main body parts 19a of the lower inner mold 12 and the upper inner mold 19 are held in that position, and then, as shown in FIG. 1(d), Then, only the cylinder 22 is contracted and the slide portion 1.9b is
As shown in FIG.
When the gas 33 is injected, the peripheral edge 6C of the skin material 6 is rolled up onto the back surface of the base material 5.

In this state, as shown in FIG. 1(F), when the slide portion 19b is lowered again by the extension of the cylinder 22,
The peripheral edge 6C of the skin material 6 is pressed onto the back surface of the base material 5, and a product 34 such as an interior material is formed.

When the product 34 is formed, the upper and lower molds 20.14 return to their initial positions as shown in FIG.
is carried out from above the lower mold 14 by a transport device (not shown).

In this way, by repeating the above-mentioned process, the product 3
4 are automatically and continuously produced.

Note that the skin material pasting method and apparatus of the present invention are not limited to the above-described embodiments, and include setting the base material 5 directly on the skin material 6 without adsorbing it to the lower surface of the upper inner mold 19. Of course, modifications may be made without departing from the gist of the present invention.

[Effects of the Invention] As described above, according to the skin material pasting method and device of the present invention, the work of adhering the skin material to the base material can be performed automatically and continuously up to the finishing process, thereby reducing production. It can produce extremely excellent effects such as improved efficiency, uniform product quality, and labor savings since no workers are required.

[Brief explanation of drawings]

Figures 1 (0) to (f) are side cross-sectional operational explanatory diagrams showing an example of the apparatus for carrying out the method of the present invention, and Figure 2 is a
-■ Cross-sectional views, Figures 3 (A) to Q\) are side cross-sectional operation explanatory views showing the conventional example, and Figures 4 (A) to Q\) are side cross-sectional operation explanatory views showing other conventional examples. . 5 is a base material, 6 is a skin material, 6c is a peripheral part, IO is a lower outer mold, 11 is a gas pipe line, 12 is a lower inner mold, 13, 2
1.22 is a cylinder, l4 is a lower mold, l7 is an upper outer mold, 17a is an outer peripheral surface, l8 is a cutter, 19 is an upper inner mold, 19a is a main body part, 19b is a slide part, 20 is an upper mold , 33 indicates a gas, and 35 indicates a pressure source.

Claims (1)

[Scope of Claims] 1) A lower mold consisting of a lower inner mold that can be raised and lowered and a lower outer mold that has a gas pipe, and an upper inner mold that can be raised and lowered and an upper outer mold that has a cutter. A bondable skin material and a base material are set between the upper mold and the upper mold, and the skin material is pressed onto the surface of the base material by lowering the upper mold, and the skin material is shaped into a predetermined shape by the cutter. After cutting and lowering the upper and lower inner molds to raise the peripheral edge of the skin material and raising only the slide portion formed at the peripheral edge of the upper inner mold, gas is injected from the gas pipe. By doing so, the peripheral edge of the skin material is wrapped around the back surface of the base material,
A method for pasting a skin material, comprising pressing the peripheral edge of the skin material onto the back surface of the base material by lowering the slide portion of the upper inner mold again. 2) A gas pipe connected to a pressure source and opening to the inner peripheral surface of the lower outer mold is provided in the frame-shaped lower outer mold, and the lower inner mold is fit into the lower outer mold so as to be movable up and down. A frame-shaped upper outer mold that forms a mold and whose inner circumferential surface is located inside the inner circumferential surface of the lower outer mold by an amount substantially equal to the thickness of the skin material can be raised and lowered directly above the lower outer mold. and a cutter that can slide on the outer circumferential surface of the lower outer mold when the upper outer mold is lowered is attached to the outer peripheral surface of the upper outer mold, so that the upper outer mold can be moved up and down between the main body and the outer periphery of the main body. 1. A skin material pasting device, characterized in that an upper mold is formed by fitting an upper inner mold which is movable up and down and comprising a slide portion fitted into a slide portion.