JP2000135724A - Manufacture of simultaneously molded film laminate product and simultaneously molded film laminating mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the non-defective rate of a simultaneous molded in-mold decorated product. SOLUTION: An injection molding die formed of an A-mold 6 with a clamp plate 4 and a B-mold 2 with a protruded section entering into an area encircled by the clamp plate 4 of the A-mold 6 and a clamping means on a parting face 5 to be parted from the A-mold 6 in the area encircled by the clamp plate 4 of the A-mold 6 is used, and a film 3 introduced between the A-mold 6 and the B-mold 2 is clamped the clamp plate 4, and the A-mold 6 and the B-mold 2 are mold closed. The molten resin is injected into a product cavity 12 formed of the A-mold 6 and the B-mold 2 and a molded product is bonded integrally with the film, and mold opening is carried out while the film is suction held on the B-mold 2 through the clamping means, and the molded product film is released from the B-mold 2 and the unnecessary films are cut off and removed from the molded product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a simultaneously painted article and a mold for simultaneous simultaneous painting used in interior and exterior panels of automobiles and electric appliances.

[0002]

2. Description of the Related Art A conventional method for producing a simultaneously molded article is as follows.
First, injection molding has a mold B that holds a molded product when the mold is opened, and a mold A in which the film is pressed against the parting surface by a clamp plate when the mold is closed and the press by the clamp plate is released when the mold is opened. Using a mold, press the film against the parting surface of mold A with a clamp plate, close the mold, inject the molten resin into the product cavity,
After the film is bonded to the molded product, the clamp plate is separated from the parting surface to release the film, and the molded product to which the film is adhered is opened with the mold A held.

[0003]

However, conventionally, when the mold is opened, the tongue-shaped film protruding from the molded product is caught on the clamp plate, so that the film adhered to the molded product is peeled off and defective. Or the molded product to which the film is adhered is pulled down from the mold B and is damaged. Therefore, the non-defective rate of simultaneously molded articles was low.

[0004] The present invention relates to a method for producing a molded simultaneous painted article and a mold for simultaneous molded painted object for the purpose of improving the yield rate of the molded simultaneous painted article.

[0005]

Means for Solving the Problems The present invention has the following constitution in order to solve the above-mentioned problems. (1) A mold having a clamp plate, and a parting between the A mold in a region surrounded by the clamp plate of the A mold and having a convex portion that enters a region surrounded by the clamp plate of the A mold. A film introduced between the A mold and the B mold is clamped by a clamp plate using an injection mold composed of a B mold having fixing means on the surface, and the A mold and the B mold are molded. Close the mold, inject the molten resin into the product cavity formed by the A mold and the B mold, and bond and integrate the molded product and the film. Opening, releasing the molded product with the film from the mold B, and cutting out the unnecessary film from the molded product.

(2) In the method of (1), an A mold having a film holding cavity into which the convex portion of the B mold enters and having a ventilation hole communicating with the film holding cavity is used. A method of manufacturing a molded simultaneous film-laminated product in which gas is injected from a vent when the mold is opened.

(3) An A mold having a clamp plate and having a convex portion protruding from a region surrounded by the clamp plate, and a parting between the A mold in the region surrounded by the clamp plate of the A mold. A film introduced between the A mold and the B mold is clamped by a clamp plate using an injection mold composed of a B mold having fixing means on the surface, and the A mold and the B mold are molded. Close the mold, inject the molten resin into the product cavity formed by the A mold and the B mold, and bond and integrate the molded product and the film. Opening, releasing the molded product with the film from the mold B, and cutting out the unnecessary film from the molded product.

(4) In (3), an A mold having an air hole in a region surrounded by a clamp plate and a B mold having a film holding cavity into which a convex portion of the A mold enters is used. A method for producing a molded simultaneous film bonded product in which gas is injected from a vent hole when the mold and the B mold are opened.

(5) An A mold having a clamp plate, and an A mold having a convex portion which enters a region surrounded by the A mold clamp plate and which is within the region surrounded by the A mold clamp plate. And a mold B for simultaneous simultaneous film bonding, comprising a mold B provided on the parting surface and having fixing means capable of adsorbing and holding the film when the mold is opened.

(6) In the above (5), the mold A is a mold for simultaneous simultaneous film bonding having a film holding cavity into which the convex portion of the mold B enters and having a vent hole communicating with the film holding cavity. .

(7) An A mold having a clamp plate and having a convex portion protruding from a region surrounded by the clamp plate, and a parting of the A mold within the region surrounded by the clamp plate of the A mold. A mold for simultaneous film bonding comprising a mold B provided on the surface and having a fixing means capable of adsorbing and holding the film when the mold is opened.

(8) In (5), the mold A was a mold for simultaneous simultaneous film bonding in which the mold A had a vent on the parting surface with the mold B.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, referring to the drawings, a mold for simultaneous simultaneous painting according to the present invention will be described.

The mold for simultaneous simultaneous painting according to the present invention includes an A mold 6 having a clamp plate 4 and a clamp plate 4 of the A mold 6.
Is provided in the area surrounded by the clamp plate 4 of the A mold and on the parting surface 5 with the A mold 6 so that the film 3 can be sucked and held when the mold is opened. B mold 2 having fixing means.
The convex portion that enters the region surrounded by the clamp plate 4 is A
The mold 6 may have it. As one specific example, the B mold 2 for holding the molded product 1 when the mold is opened, the film 3 being pressed against the parting surface 9 by the clamp plate 4 when the mold is closed, and the press by the clamp plate 4 when the mold is opened. In an injection mold having an A mold 6 to be released,
The fixing means for sucking and holding at least the portion of the tongue-shaped film 7 protruding from the molded product 1 in the region surrounded by the clamp plate 4 to the B mold 2 when the mold is opened is a parting surface 5 of the B mold 2. Some are provided in.

In the B mold 2 of the injection mold, fixing means for adsorbing and holding the film 3 on the parting surface 5 of the B mold 2 is formed on the parting surface 5. The B mold 2 has, for example, a large convex portion 10 on the parting surface 5 and a product cavity 12 having an injection gate 11 formed on a part of the top surface 13 of the large convex portion 10. (See FIGS. 1 to 6 and 8). Further, as the B mold 2, for example, there is a mold having a convex portion having a height which does not protrude from the clamp plate 4, though it enters a region surrounded by the clamp plate 4 of the A mold 6 (see FIG. 9). . The product cavity 12 may be formed in one of the B mold 2 and the A mold 6, or may be formed in both.
As the fixing means, there are a fixing means having only the vacuum suction port, a fixing means having only the suction pad 18, and a fixing means having a suction pad (see FIG. 7) attached to the tip of the vacuum suction port. In this embodiment, a vacuum suction port 14 is formed as a fixing means. The location where the vacuum suction port 14 is formed
It may be the top surface of the large convex portion 10 (see FIGS. 1 to 6) or the side surface. Alternatively, the parting surface 5 may be used (see FIG. 8). The large convex portion 10 may enter into a concave portion 15 of the A mold 6 described later when closing the mold.

The A mold 6 is, for example, the B mold 2
Some have a concave portion 15 into which the large convex portion 10 enters and the film 3 adheres to the inner surface thereof. This recess 15
Vent holes 16 may be formed in the inner surface and the parting surface 5. The ventilation holes 16 are used for vacuum suction, gas injection, and the like. When used for vacuum suction, the film 3 can be brought into close contact with the inner surface of the recess 15. There is a parting surface 5 of the A mold 6 on which a clamp plate 4 to which the film 3 is pressed is formed (see FIGS. 1 to 6). In addition, as the A mold 6,
For example, there is a projection having a projection having a height such that the projection enters a region surrounded by the clamp plate 4 but does not protrude from the clamp plate 4 (not shown).

Next, a method for manufacturing a simultaneously molded article of the present invention will be described. It is possible to use the mold for simultaneous molding and painting having the B mold 2 and the A mold 6 described above. Hereinafter, a specific example of the present invention will be described. First, the film 3 introduced between the A mold 6 and the B mold 2 is clamped by the clamp plate 4. When the A mold 6 has the concave portion 15, after pressing the film 3 against the parting surface 9 with the clamp plate 4,
The film 3 may be brought into close contact with the inner surface of the recess 15 by vacuum suction from the ventilation hole 16 (see FIG. 1).

Next, the B mold 2 and the A mold 6 are closed (see FIG. 2). By closing the mold, film 3 and B mold 2
And a product cavity surrounded by. Further, the vacuum suction port 14 of the B mold 2 comes into contact with the film 3 which is in close contact with the A mold 6. As shown in FIGS. 1 to 6, a vacuum suction port 14 is formed on the top surface of the large convex portion 10 of the B mold 2, and the film 3 is not brought into close contact with the concave portion 15 of the A mold 6. The mold closing is started on the top surface 1 of the large convex portion 10 on the film 3.
It is effective to start the suction through the vacuum suction port 14 at the time when the film 3 comes into contact with the vacuum suction port 14 because the picture of the film 3 corresponding to the top surface 13 of the large projection 10 is hardly distorted.

Next, the molten resin 17 is injected into a product cavity formed by the A mold 6 and the B mold 2, and the molded product 1 and the film 3 are integrated (see FIG. 3). Molten resin 1
As the molding material of 7, a polystyrene resin, an ABS resin, a polycarbonate resin, a polypropylene resin, a polyethylene resin, or the like can be used.

Next, the film 3 is
The mold is opened while adsorbing and holding on the B mold 2. As the portion to be adsorbed, the tongue-shaped film 7 protruding from the molded article 1
There is a portion corresponding to the area surrounded by the clamp plate 4. The timing of sucking and holding the tongue-shaped film 7 protruding from the molded product 1 to the B mold 2 may be any time before the tongue-opening or at the same time as the mold-opening before the tongue-like film 7 is hooked on the clamp plate 4. At least, when the clamp plate 4 is separated from the parting surface 9 to release the film 3 and open the mold, the tongue-shaped film 7 may be suction-held on the B mold 2 (FIGS. 4, 5 and 5). See FIG. 6). The timing of releasing the film 3 by pulling the clamp plate 4 away from the parting surface 9 may be before starting the mold opening or at the same time as the mold opening. When the release timing is before starting the mold opening, it is preferable that a clearance space for the clamp plate 4 is formed between the B mold 2 and the clamp plate 4 in the mold closed state. This is because the mold A 6 and the molded article 1 start to be released from the mold simultaneously with the opening of the mold, and at the same time, the tongue-like film 7 must also be released from being pressed by the clamp plate 4. The clamp plate 4 may be moved away from the B mold 2 after a while accompanying the movement of the B mold 2 (FIGS. 4 and 5).
reference).

After the clamp plate 4 moves for a while with the opening of the mold, it stops at the limit of the length of the rod 19, and the mold A6
While keeping the distance between the mold and the clamp plate 4 constant, the mold A6
When the mold and the mold B2 further separate, the tongue-like film 7
Is hooked on the clamp plate 4 (see FIG. 5). However, since the portion of the tongue-shaped film 7 corresponding to the portion surrounded by the clamp plate 4 and the peripheral edge 8 of the product cavity is sucked and held by the B mold 2, the film 3 is drawn toward the molded product 1. In addition, a force for peeling off the molded article 1 and the film 3 is not applied to the film 3.

When the mold is opened, the air holes 1 of the A mold 6 are opened.
The molded article 1 may be extruded from the recess 15 by injecting gas from 6.

Next, the mold is opened, the molded product 1 is released from the B mold 2, and the tongue-shaped film 7 is cut off from the molded product 1 (not shown). Before release, the suction holding of the tongue-shaped film 7 to the B mold 2 is released. The mold release may be performed by ejecting the molded product 1 using an ejector pin or the like (not shown) provided on the B mold 2. Velo-like film 7
Of the molded article 1 by laser cutting or cutter
This may be performed along the outer periphery of the molded article 1 or the outer periphery of the hole of the molded article 1.

The film 3 is a film in which a pattern layer, an adhesive layer and the like are sequentially laminated on a base sheet, and is called a so-called insert film in which the base sheet is not peeled off after the molten resin 17 adheres to the film 3. There is something. Alternatively, the film 3 is a film in which a release layer, a pattern layer, an adhesive layer, and the like are sequentially laminated on a base sheet, and a so-called transfer film that peels the base sheet after a molten resin is adhered to the film 3. is there. Examples of the material of the base sheet include various resins such as polyethylene terephthalate, polypropylene, acrylic, and thermoplastic elastomer, or a cloth or a nonwoven fabric knitted with various fibers. The picture layer is a layer that imparts decorativeness and functionality to the surface of the molded article 6. The picture layer includes a normal printed pattern and a conductive pattern formed of a conductive material. The picture layer uses a resin binder and a pigment or a dye. The picture layer may use a resin binder and a metal pigment or an inorganic pigment having a masking property. The picture layer may be composed of a metal vapor-deposited layer to give a metallic luster. The adhesive layer is a layer for bonding the film 1 and the molded product 6. For the adhesive layer, a heat-sensitive or pressure-sensitive resin suitable for the material of the molding resin is appropriately used.
For example, when the molding resin is an acrylic resin or a urethane resin, a vinyl chloride-vinyl acetate copolymer resin or an acrylic resin may be used as the adhesive layer. The picture layer and the adhesive layer are formed by various printing methods. The adhesive layer may use a resin film.

[0025]

Since the present invention has the above-described structure, the following effects can be obtained. In other words, when the mold is opened, even if the film protruding from the molded product is caught on the clamp plate, the film protruding from the molded product is adsorbed and held by the B mold in a region surrounded by the clamp plate. The part of the film that is adhered to is not peeled off from the molded product. Therefore, no defective products are generated. Further, the molded product is not damaged by being pulled down from the mold B.
Therefore, the non-defective rate of the simultaneously molded article is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one step of a method of manufacturing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

FIG. 2 is a cross-sectional view showing one step of a method of manufacturing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

FIG. 3 is a cross-sectional view showing one step of the method for manufacturing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

FIG. 4 is a cross-sectional view showing one step of the method for manufacturing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

FIG. 5 is a cross-sectional view showing one step of the method for manufacturing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

FIG. 6 is a cross-sectional view showing one step of the method for manufacturing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

FIG. 7 is a cross-sectional view showing one step of the method for producing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

FIG. 8 is a cross-sectional view showing one embodiment of a step of the method of manufacturing a simultaneously-painted article of the present invention and a mold for simultaneous-painting.

FIG. 9 is a cross-sectional view showing one step of the method for manufacturing a simultaneously-painted article of the present invention and an embodiment of a mold for simultaneous-painting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Molded product 2 B die 3 Film 4 Clamp plate 5 Parting surface 6 A die 7 Velo film 8 Product cavity periphery 9 Parting surface 10 Large convex part 11 Injection gate 12 Product cavity 13 Top surface 14 Vacuum suction port 15 Concave part 16 Vent hole 17 Molten resin 18 Suction pad 19 Rod

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshikazu Kobe 3, Mibuhanai-cho, Nakagyo-ku, Kyoto-shi, Kyoto Inside Nihon Photo Printing Co., Ltd. Address Nihon Photo Printing Co., Ltd. F-term (reference) 4F202 AA04 AA11 AA13 AA28 AD05 AD08 AG03 AH25 AH26 AH51 CA11 CB01 CB13 CK90 CL01 CM04 CQ01 CQ07 4F206 AA04 AA11 AA13 AA28 AD05 AD08 AG03 JH05 JH05 JH05 JH05 JN35 JN41 JQ81 JT06 JW23

Claims (8)

[Claims] A mold having an A mold having a clamp plate and an A mold having a projection which enters a region surrounded by the clamp plate of the A mold and which is located in a region surrounded by the clamp plate of the A mold. Using an injection mold composed of a B mold having fixing means on the parting surface, a film introduced between the A mold and the B mold is clamped with a clamp plate, and the A mold and the B mold are clamped. Was closed, the molten resin was injected into the product cavity formed by the A mold and the B mold, and the molded product and the film were bonded and integrated, and the film was sucked and held by the B mold through the fixing means. A method of manufacturing a molded simultaneous film bonded product, comprising opening a mold as it is, releasing a molded product with a film from a mold B, and cutting off an unnecessary film from the molded product. 2. A mold having a film holding cavity into which a convex portion of a mold B is inserted and having an air hole communicating with the film holding cavity, wherein the air hole is formed when the molds A and B are opened. 2. The method for producing a molded simultaneous film-laminated product according to claim 1, wherein a gas is injected from the substrate. 3. An A mold having a clamp plate and having a protrusion protruding from a region surrounded by the clamp plate;
In the area surrounded by the clamp plate of the mold, an injection molding mold composed of a B mold having a fixing means on a parting surface with the A mold is used, and between the A mold and the B mold. The introduced film is clamped by a clamp plate, the mold A and the mold B are closed, and a molten resin is injected into a product cavity formed by the mold A and the mold B to form a molded product and a film. Are bonded and integrated, and the film is opened by holding the film to the B mold through the fixing means, and the molded product with the film is released from the B mold and unnecessary film is cut off from the molded product. A method of manufacturing a molded film bonded product. 4. An A mold and a B mold using an A mold having an air hole in a region surrounded by a clamp plate and a B mold having a film holding cavity into which a convex portion of the A mold enters. 4. The method for producing a molded simultaneous film-laminated product according to claim 3, wherein a gas is injected from the vent hole when the mold is opened. 5. An A mold having a clamp plate and an A mold having a projection which enters a region surrounded by the A mold clamp plate and which is within an area surrounded by the A mold clamp plate. A mold for simultaneous simultaneous film bonding, comprising: a mold B provided on the parting surface and having fixing means capable of holding the film by suction when the mold is opened. 6. The mold simultaneous film laminating mold according to claim 5, wherein the mold A has a film holding cavity into which the convex portion of the mold B enters, and has a ventilation hole communicating with the film holding cavity. Type. 7. An A mold having a clamp plate and having a convex portion protruding from a region surrounded by the clamp plate;
Molding characterized by comprising a mold B provided in a region surrounded by the clamp plate of the mold and provided on a parting surface with the mold A and having fixing means capable of holding the film by suction when the mold is opened. Mold for simultaneous film bonding. 8. The mold for simultaneous simultaneous film bonding according to claim 5, wherein the mold A has a vent on the parting surface with the mold B.