JPH11262929A - Method and apparatus for in-mold decorating injection molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adequately integrate a name plate or the like without deviating by detachably positioning the plate at a specific position of a cavity of a female mold along a laminate product taking-out direction before an orienting step, orienting it and injection molding it. SOLUTION: A name plate 1 is engaged within an engaging recess 4 for installing a component, and a decorating sheet S is urged fixedly to a parting surface 14 of a female mold 12 by a clamper 20. Then, a heating platen 45 is moved on the sheet S, and the sheet S is heated to be softened by a radiation heat of the platen 45 without contact with the platen 45. At this time, the sheet S is vacuum sucked via vacuum suction holes 17 and a sheet fixing suction groove 16 as well as a slit-like gap 15, and oriented so as to be brought into close contact with the cavity 13 of the mold 12. The mold is clamped with a male mold. Then, a molten resin is cast in the mold cavity, and injection molded. Thus, a decorated product (name plate 1) for giving a stereoscopic sense and a high grade sense can be adequately integrated with a specific site of a surface of a laminated product without deviating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative laminated product (product) in which a painted sheet on which a pattern, a character or the like is applied in a mold at the same time as injection molding is integrally adhered and laminated on the surface of an injection resin molded product.
The present invention relates to an apparatus and a method for simultaneous painting by injection molding, which are adapted to obtain the following.

[0002]

2. Description of the Related Art Several methods have been proposed for simultaneous injection molding and painting methods in which a painting sheet is integrally adhered to the surface of an injection resin molded article simultaneously with injection molding.
Most of them are arranged so that all or some of the following steps (a) to (i) are performed in the stated order or permuted, and the steps are sequentially performed or a plurality of steps are simultaneously performed in parallel or in parallel. (Japanese Patent Publication No. 50-19132, Jitsuhei 3
-56344, JP-B-7-41637, etc.).

(A) A sheet supply step of supplying a picture sheet onto a female parting surface used for injection molding. (B) a clamping step of fixing and holding the painted sheet on the female parting surface; (C) A heating softening step of heating and softening the painted sheet with a hot platen or the like. (D) A stretching step (preliminary molding step) of stretching the painted sheet along the female cavity by vacuum suction and / or air supply. (E) A mold clamping step of moving one of the female mold and the male mold (usually a female mold) to the other (usually a male mold) to clamp the mold. (F) An injection molding step of injecting and filling a resin (molten resin) in a flowing state from the male mold side into a cavity formed between the female mold and the male mold to perform injection molding. (G) A mold opening step of separating the female mold and the male mold. (H) A sheet trimming step of separating a portion of the painted sheet to be attached to the injection resin molded body from another portion (excess portion). (I) A take-out step of taking out the laminated product on which the painted sheet is adhesively laminated from both the male and female molds.

[0004] The simultaneous execution of a plurality of steps means that a plurality of steps are included in one step. For example, in the mold clamping step (e), the painted sheet is divided into a female type and a male type. If it is not fixed and held between them, the clamping step (b) is performed simultaneously with the mold clamping step, and the painted sheet is used in the injection molding step (f). If the stretching is performed by the heat and pressure of the injected molten resin, this means that the stretching step (d) is performed simultaneously with the injection molding step.

[0005] As the painting sheet, either a laminated sheet (laminated sheet) or a transfer sheet is used in accordance with the product type. In the case of a laminated sheet, painting is performed as it is by injection molding. That is, all the layers of the sheet are bonded and integrated with the surface of the injection resin molded body to form a decorative layer. On the other hand, when the painting sheet is a transfer sheet, the support sheet of the painting sheet integrated with the surface of the injection resin molded body is peeled off, and only the transfer layer such as the decoration layer remains on the injection resin molding body side. Then, the painting is completed by forming a decorative layer.

[0006]

In some cases, a laminated product to be obtained by simultaneous painting with injection molding is required to decorate a specific portion thereof with characters such as a manufacturer's name. As described above, in order to apply a character or the like to a specific part of the laminated product, (1) After the laminated product is obtained, the character or the like is applied to a specific part of the surface of the laminated product using a hot stamp, pad printing, a double-sided adhesive tape, or the like. There are known two methods: a method of attaching a molded article (decorative part such as an inscription plate) and integrating them, and a method of (2) printing characters or the like on a painting sheet in advance.

However, in the method (1), it takes time and effort to position and attach a decorative component to the obtained laminated product, and the number of man-hours increases. Also, (2)
In the method of the ordinary simultaneous injection molding painting method,
As described above, after the painted sheet is supplied and positioned in the female mold, a step of extending the female sheet along the female mold cavity by vacuum suction or the like is essential. There is a possibility that the position and posture of characters and the like may be shifted, and since the printing is performed, it is not possible to decorate a three-dimensional inscription such as a batch that gives a three-dimensional feeling or luxury to a viewer.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a viewer with a three-dimensional appearance and a high-grade appearance at a specific portion on the surface of a laminated product. Three-dimensional decorative parts such as nameplates can be properly integrated without any displacement, etc., and there is no need to position or attach decorative parts, and the increase in man-hours is minimized. It is an object of the present invention to provide a method and an apparatus for simultaneous painting by injection molding, which can be suppressed to a minimum.

[0009]

In order to achieve the above-mentioned object, an injection molding simultaneous painting method according to the present invention basically comprises a sheet supply step of supplying a painting sheet on a female parting surface. A clamping step of fixing and holding the painted sheet on the parting surface of the female mold, a stretching step of stretching the painted sheet so as to be in close contact with the cavity of the female mold, and the female mold and the male mold A mold clamping step of moving one of the molds to the other side to perform mold clamping, and injecting and filling a resin in a fluid state from the male mold side into a molding cavity formed between the female mold and the male mold, thereby obtaining Injection molding step of laminating and integrating the injection resin molded body and the painted sheet, and a mold opening step of separating the female mold and the male mold,
Taking out the laminated product on which the painted sheet is adhered and laminated from the female mold, and before the stretching step, at a specific portion of the cavity of the female mold, a decorative part such as an inscription plate is used for the laminated product. It is characterized in that it is positioned and fixed in a detachable state along the take-out direction, and the decorative component, the painted sheet, and the injection resin molded body are integrated by the stretching process and the injection molding process. I have. In the method of the present invention, examples of a method for positioning and fixing the decorative component to a specific portion of the cavity include a fitting method, a vacuum suction method, a magnetic suction method, and the like.

[0010] The simultaneous painting apparatus for injection molding according to the present invention comprises both male and female molds, and supplies a painted sheet on a parting surface of the female mold, and clamps the supplied painted sheet by clamping means. After being pressed and fixed on the printing surface, the painted sheet is stretched by a vacuum suction means or the like so as to be in close contact with the female mold cavity, and the male and female molds are clamped. Injecting the resin in the fluid state from the male mold into a molding cavity formed between the female mold and the male mold,
After the resin is solidified, the male and female molds are opened to take out a laminated product in which a painted sheet is adhesively laminated from the male and female molds, and the cavity of the female mold is specified. The part is provided with a component installation part on which a decorative component such as a name plate is removably positioned and fixed along the direction of taking out the laminated product.

[0011] The component installation portion preferably includes a fitting recess into which a decorative component such as a name plate is removably fitted along the direction of taking out the laminated product. In a preferred aspect of the apparatus of the present invention, an integrating means such as an adhesive, a pressure-sensitive adhesive, or a double-sided adhesive tape is provided on the side of the decorative sheet on the side of the decorative sheet. In another preferred aspect, on the side of the decorated sheet of the decorative part,
There is provided an integration projection projecting toward the cavity of the female mold for integration with the laminated product. in this case,
Preferably, the integrated convex portion is provided with a hook portion that protrudes in a direction that becomes an undercut with respect to the laminated product removal direction.

In a preferred embodiment of the method and apparatus for simultaneous painting by injection molding according to the present invention having the above-described structure, a fitting concave portion is provided at a specific portion of the female cavity. A decorative component such as a name plate made of a molded product is removably fitted along the direction of taking out the laminated product, and is positioned and fixed. After the decorative component is positioned and fixed in the fitting recess in this manner, a painted sheet is supplied onto the female parting surface (sheet supplying step), and the supplied painted sheet is clamped by the clamping means. After pressing and fixing on the surface (clamping step), the painted sheet is stretched by vacuum suction means or the like so as to be closely adhered along the female mold cavity (stretching step).

In this case, if an integrated means such as an adhesive is applied to the decorative sheet on the side of the decorative sheet on the side of the decorative sheet (back side), in the stretching step, the decorative part is placed on a specific portion of the surface of the decorative sheet. Adhesion and integration, the painting sheet and the injection resin molded body are integrated in the subsequent injection molding process,
A laminated product in which the decorative component is positioned and fixed at the specific portion is obtained.

On the other hand, in the case where, for example, an integrated convex portion with a hook portion is provided on the back surface side of the decorative component, the painted sheet is in close contact with the female cavity in the stretching step. However, there is a gap between the integrated protrusion having the hook portion and the integral protrusion. However, in a subsequent injection molding process, when a resin in a flowing state such as a molten resin is injected and filled into the molding cavity, the heat and pressure of the resin causes the painted sheet around the integration convex portion to partially expand. When the resin breaks down, the resin also wraps around the gap portion on the back side of the decorative part and clings to the entirety of the integration convex portion, and when the resin in the fluidized state solidifies, the solidified injection resin molded body A laminated product is obtained in which the decorative component is integrated with the decorative component, and the decorative component is positioned and fixed at the specific portion.

As described above, the laminated product in which the three components of the decorative part, the painted sheet, and the injection molded resin are integrated is then protruded from the female mold in the mold opening direction by a removal robot, an ejector pin, or the like. Is done. in this case,
Since the decorative part is removably fitted into the cavity of the female mold along the direction of taking out the laminated product (usually the mold opening direction), the decorative part is taken out integrally therewith without leaving the painted sheet (the surface of the laminated product). .

Therefore, according to the method apparatus of the present invention, a three-dimensional decorative part such as an inscription plate capable of giving a viewer a three-dimensional effect or a high-class effect is positioned at a specific portion on the surface of the laminated product. It is possible to integrate properly without accompanying, and it is possible to minimize the increase in the number of man-hours without the need for positioning and attaching the decorative parts. In the present invention, the male and female molds are made of metal such as iron or ceramics, and are provided with small holes (vacuum suction holes or the like) for vacuum suction or compressed air supply as necessary. Also,
The female mold is composed of an aggregate of a plurality of divided parts (in a so-called nested structure), a slit-shaped gap is formed between adjacent divided parts, and the gap is used as a vacuum suction hole to perform vacuum suction. Is also good.

Further, a clamp means is provided for fixing and holding the painting sheet on the female parting surface. As the clamping means, a frame-shaped pressing plate or the like can be used, and the driving thereof can use a molding driving force such as a mold clamping operation or the power of an ejector pin driving mechanism. This is achieved by separately providing a driving means such as a fluid pressure actuator.

As a method of supplying a sheet with a picture, an unwinding winding method (roll / roll method) or a female continuous sheet is provided by gripping a leading end of a long continuous strip-shaped sheet wound in a roll shape with a transport chuck or the like. In addition, any of a supply method such as a method in which a sheet is cut by every shot to form a single sheet and a method in which a single sheet is supplied by a robot or the like can be adopted.

The painted sheet used in the present invention comprises a base sheet and a decorative layer laminated thereon, and is a laminated sheet used as a final product while keeping the base sheet in close contact with the injection molded resin article. (Laminate sheet) is used. As the base sheet, polyvinyl chloride, acrylic, polystyrene, ABS resin,
Thermoplastic resins such as polycarbonate, polyester, polypropylene, and polyethylene can be used. The thickness of the base sheet is usually about 20 to 500 μm.
As the decorative layer, a printed pattern, colored or transparent coating, a metal thin film, or a functional layer such as a hard coating film, an antifogging paint, or a conductive layer can be used.

As the resin for injection molding, ABS (acrylonitrile-butadiene-styrene copolymer) resin,
Thermoplastic resin such as polystyrene, polyvinyl chloride, acrylic, polycarbonate, etc. is heated and melted to be in liquid or fluid state, or two-pack curing type, catalyst curing type resin, for example, polyurethane, polyester, epoxy etc. Conventionally known materials such as uncured liquid and the like for simultaneous painting with injection molding can be used, and are selected according to the required physical properties of the product, cost, and the like.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of an injection molding simultaneous painting apparatus according to the present invention. As shown in FIG. 5, the laminated product P to be obtained by the simultaneous injection molding and painting apparatus 10 of this embodiment is a panel having a rectangular shape in plan view and a U-shaped cross section (see FIG. 4). The painting sheet S is bonded and laminated on the surface of the body Pa,
In addition, a rectangular inscription plate 1 (resin molded product) having a thickness of about 2 mm on which a character (for example, DNP) or the like is provided as a decorative component on a specific portion of the surface (here, a portion near the upper left corner). )
Are integrally attached. Here, as the above-mentioned painted sheet S, a base sheet made of acrylic resin (having a thickness of 125 μm) and a decorative layer (one of acrylic resin and vinyl chloride-vinyl acetate copolymer) laminated thereon by a gravure printing method are used. : 1 weight ratio mixture consisting of a pattern layer of an ink in which a pigment is added to a binder) and an adhesive layer (a vinyl chloride-vinyl acetate copolymer system). The base sheet is tightly integrated with the injection molded resin Pa. A laminated sheet (laminated sheet) used as an end product as it is is used. The decorative layer (pattern layer) has a wood grain pattern formed by combining three colors of a pattern plate, and the adhesive layer has a gravure solid printing plate (screen depth of 60 μm) having a screen ruling of 40 lines / cm. Using (Gravure printing 2
This is a layer having a thickness of 2 μm formed by color printing.

Injection molding simultaneous painting apparatus 10 of this embodiment
Comprises a female mold 12 and a male mold 25 having an uneven shape corresponding to the laminated product P to be obtained (see FIG. 5). The female mold 12 is not shown, but the bottom is fixed to a movable platen. hand,
The ram or the like of the fluid pressure cylinder moves forward and backward in a horizontal direction (X direction in FIG. 1), in other words, in a direction approaching / separating from the male mold 25.

In the present embodiment, the female die 12 is movable and moves in the horizontal direction as described above. However, the present invention is not limited to this. It is also possible to adopt a mode in which the female molds are vertically opposed and one of them is moved in the vertical direction.

The female mold 12 has a nested structure composed of a plurality of split molds.
2, a cavity 13 corresponding to the laminated product P is formed, and a parting surface 14 is formed on the outer peripheral side of the cavity 13. Around the cavity 13 on the parting surface 14, the cavity 1
An annular continuous section-forming rectangular suction groove 16 for vacuum-sucking the painted sheet S is formed so as to surround the sheet 3, and a predetermined number of vacuum suction holes 17 are formed in the sheet-fixing suction groove 16. It is opened at the pitch of.

A slit-like gap 15 serving as a vacuum suction hole is formed between the split dies in the female mold 12. The slit-shaped gap 15 is opened at a boundary between a rounded corner (R) forming a corner of the cavity 13 and a plane part following the corner.
The reason why the slit-shaped gap 15 is opened at the boundary portion is that the boundary portion is most likely to have a trace of a line remaining on the laminated product P due to the existence of the gap 15 used as a vacuum suction hole. This is because it is an inconspicuous part.

A vacuum suction hole 17 opened in the sheet fixing suction groove 16 and the slit-shaped gap 15 are connected to the outside through a vacuum suction passage 18 and a conduit 19 formed in the female mold 12. In this embodiment, the vacuum suction holes 17, the sheet fixing suction grooves 16, the slit-shaped gaps 15, the vacuum suction passages 18, the conduits 19, and an external vacuum pump are connected. And the like constitute a vacuum suction means.

Further, the parting surface 1 of the female mold 12
An annular mounting groove 23 in which an O-ring 22 is mounted is provided on the outer peripheral side of the sheet fixing suction groove 16 in FIG. The O-ring 22 serves to hermetically shut off the cavity 12 from the outside when a frame-shaped clamper 20 to be described later is pressed against the parting surface 14 of the female mold 12 with the painting sheet S interposed therebetween. Fulfill.

In addition to the above, the cavity 1 of the female mold 12
Near the upper end of the bottom surface of the base 3, the inscription plate 1 as a decorative component is detachably positioned and fixed along the direction in which the laminated product P is taken out (X direction in FIG. 4). A mating recess 40 is provided.

Here, an adhesive 1e as an integrating means for integrating with the painting sheet S is coated on the back side (the painting sheet side) of the inscription plate 1; The depth and the vertical and horizontal dimensions of the intaglio 40 correspond to the inscription plate 1, and the intaglio 1 is fitted into the fitting recess 40, whereby the intaglio 1 is inserted into the fitting recess 40. It is in close contact with the peripheral surface so that it does not fall off due to the frictional force between those surfaces.

On the other hand, although not shown, the male mold 25 is fixed to a fixed plate on which a nozzle of an injection molding machine is mounted, and the male mold 25 corresponds to the shape of the laminated product P. A convex portion (core portion) 26 is provided, and a runner 27 for injecting the molten resin and a gate 28 connected to the runner 27 are provided therein.

The female mold 12 is provided with a rectangular frame-shaped clamper 20 for pressing and fixing the picture sheet S to the parting surface 14 thereof. This clamper 2
0 is perpendicular to the parting surface 14 of the female mold 12 by a driving mechanism (not shown) by four connecting rods 24 slidably fitted into through holes provided near four corners of the female mold 12. It can move forward and backward in the direction (X direction). It should be noted that the clamper 20 is attached to the male sheet 25 in the closed state as shown in FIG.
A groove-shaped concave portion 29 having a depth capable of performing a separating operation for releasing the pressure-fixed state with respect to is provided.

In addition to the above configuration, in the apparatus 10 of the present embodiment, for example, a long continuous belt-shaped painting sheet S wound up in a roll shape is unwound from the upstream side of the female die 12 by one shot. Although not shown, unwinding is performed on the upstream (upper) and downstream (lower) sides of the female mold 12 so as to be wound on the downstream side through the gap between the parting surface 14 of the female mold 40 and the clamper 20. A take-out robot 30 for taking out the obtained laminated product P from the female die 12 is provided upstream of the female die 12 as described later (FIG. 4). reference).

The take-out robot 30 is for taking out the laminated product P remaining in the cavity 13 of the female mold 12 after the mold is opened. The take-out robot 30 has an air cylinder 33 and a suction cup 37 provided at the tip end of the air cylinder 33. And a transfer rod 32 extending vertically. In addition to the above, as shown in FIG. 2, a hot platen 45 is provided to heat and soften the painted sheet. The hot platen 45 is supported by the transfer rod 47 and moved forward and backward (in the direction perpendicular to the X direction and the Z direction). In the simultaneous injection molding painting apparatus 10 of the present embodiment having the above-described configuration, simultaneous injection molding painting is performed as follows.

First, as shown in FIG. 1, the inscription plate 1 is fitted into the fitting recess 40 for installing components.
In the installation state of the inscription plate 1, for example, one shot of the picture sheet S is formed by the female parting surface 14 and the clamper 20.
(Sheet feeding step), and then, as shown in FIG.
Is pressed and fixed to the parting surface 14 (clamping step).

Subsequently, the hot platen 45 is moved from the external retreat position between the male and female molds onto the painting sheet S pressed and fixed by the clamper 20 between the two molds, and the radiant heat of the hot platen 45 is moved. The sheet S is heated and softened in a non-contact state with the hot plate (heating softening step), and the sheet S is removed from the vacuum suction holes 17 and 17, the sheet fixing suction groove 16, and the slit-shaped gap 15. By performing vacuum suction through the vacuum suction passage 18 and the conduit 19, a stretching step of stretching so as to closely contact the cavity 13 of the female mold 12 is performed.

In this stretching step, first, a central portion of the painted sheet S that is adhered to the injection resin molded body Pa (a portion that is brought into close contact with the cavity 13).
Is drawn into the sheet fixing suction groove 16, whereby an appropriate tension is applied to the painted sheet S, and the painted sheet S is firmly held at the sheet fixing suction groove 16. After being fixed, the central portion of the painted sheet S is further stretched and drawn into the cavity 13, and is finally brought into close contact along the cavity 13 (virtual in FIG. 2). line).

Here, in this embodiment, since the adhesive 1e is applied to the back side of the inscription plate 1, the heat softening step and the stretching step cause the adhesive 1e to be applied to a specific portion of the surface of the painted sheet S. The name plate is bonded and integrated. After the stretching step is performed as described above, as shown in FIG. 3, a mold clamping step of moving the female mold 12 to the male mold 25 side to perform mold clamping is performed. A molten resin (heat-resistant ABS, resin temperature 240 ° C.) is injected and filled with a predetermined injection pressure into the molding cavity 3 formed between the female mold 12 and the male mold 25 through the runner 27 and the gate 28 of the male mold 25. Is performed. The mold temperature at this time was 60 ° C.

In the injection molding process, the sheet S with a picture
And the injectable resin are integrated, and the inscription plate 1 is provided with a predetermined portion predetermined for the injected molten resin (injected resin molded body Pa) via a painted sheet S that is bonded and integrated therewith. (Position near the upper left corner).
Thereafter, after the molten resin (Pa) in the molding cavity 3 is hardened, a mold opening step of separating the female mold 12 and the male mold 25 is performed, and if necessary, the painted sheet S
Among them, a trimming step of cutting off an unnecessary portion that is not required to be attached to the injection resin molded body Pa in which the molten resin (Pa) is solidified is performed, and then, as shown in FIG. A P removal process is performed.

In the step of taking out the laminated product P, the take-out robot 30 is advanced to a predetermined position between the female mold 12 and the male mold 25, and the air cylinder 33 is extended and provided at the tip thereof. The suction cups 37, 37 hold the back surface side (the opposite side of the sheet) of the injection resin molded body Pa of the laminated product P remaining in the cavity 13 and hold the laminated product P from the cavity 13 of the female mold 12 in the X direction in the figure. To take out. In this case, the inscription plate 1 is detachably fitted into the cavity 13 of the female mold 12 along the direction of taking out the laminated product (the X direction in the drawing), so that the nameplate 1 is separated from the picture sheet S (the surface of the laminated product P). Instead of being taken out with it.

Therefore, according to the simultaneous injection molding painting method and apparatus 10 of the present embodiment, a specific portion on the surface of the laminated product P has a thickness and a three-dimensional shape that can give a viewer a three-dimensional appearance and a high-grade appearance. The decorative parts (nameplate 1) can be properly integrated without any displacement, etc., and there is no need for positioning and attaching the decorative parts, etc.
An increase in man-hours can be minimized.

In the above embodiment, the adhesive 1e is applied to the back side of the intaglio 1 in order to integrate the intaglio 1 into the laminated product P. As shown in the figure, the female mold 1 is placed on the back side of the inscription 2 as a decorative part (characters and the like are provided on the front surface like the inscription 1).
2 and a protruding portion 2a protruding toward the cavity 13 side, and a direction in which the integrated protruding portion 2a is undercut with respect to the removal direction (X direction in FIG. 4) of the laminated product P. Hook part 2 protruding (in the direction perpendicular to)
b may be provided.

As described above, in the case where the integrating convex portion 2a with the hook portion 2b is provided on the back side of the inscription plate 2, in the stretching step, as shown in FIG.
The painting sheet S is in close contact with the cavity 13 of the female mold 12, but a gap K is formed between the painting sheet S and the integration convex portion 2a having the hook portion 2b. However, in the subsequent injection molding step, as shown in FIG. 8, when the molten resin (Pa) is injected and filled into the molding cavity 3, the heat and pressure of the resin (Pa) cause the integration. The painted sheet S around the convex portion 1a is partially torn, and the resin (Pa) also wraps around the gap K on the back side of the inscription plate 2 and clings to the entire convex portion 1a for integration. Molten resin (P
When a) is solidified, as shown in FIG. 9, the solidified injection resin molded body Pa and the nameplate 2 are integrated, and the laminated product P in which the nameplate 2 is positioned and fixed at a specific portion is formed. can get. Therefore, in such a case, substantially the same operation and effect as those of the above-described embodiment can be obtained.

[0043]

As can be understood from the above description, according to the method and apparatus for simultaneous painting by injection molding according to the present invention, it is possible to give a viewer a three-dimensional appearance and a high-grade appearance at a specific portion on the surface of a laminated product. The three-dimensional decorative parts, such as inscription plates, can be properly integrated without any positional displacement, etc., and there is no need for positioning and attaching the decorative parts, etc.
An increase in man-hours can be minimized.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing one embodiment of an injection molding simultaneous painting apparatus according to the present invention.

FIG. 2 is a cross-sectional view used for explaining a heating softening step and a stretching step of the apparatus shown in FIG.

FIG. 3 is a cross-sectional view for explaining an injection molding process of the apparatus shown in FIG. 1;

FIG. 4 is a cross-sectional view for explaining a take-out process of the device shown in FIG. 1;

FIG. 5 is a perspective view showing the appearance of a laminated product obtained by the apparatus shown in FIG.

FIG. 6 is an enlarged sectional view showing a main part of another embodiment of the simultaneous injection-molding and painting apparatus according to the present invention.

FIG. 7 is an enlarged sectional view for explaining a stretching step of the apparatus shown in FIG. 6;

FIG. 8 is an enlarged sectional view for explaining an injection molding process of the apparatus shown in FIG. 6;

FIG. 9 is an enlarged sectional view for explaining an injection molding process of the apparatus shown in FIG. 6;

[Explanation of symbols]

 S Painted sheet P Laminated product to be obtained Pa Injected resin molded article 1 Inscription plate (decorative part) 2 Inscription plate (decorative part) 2a Convex part for integration 2b Hook part 10 Injection molding simultaneous painting apparatus 12 Female mold 13 Cavity 14 Parting surface 15 Slit-shaped gap 16 Suction groove for fixing sheet 17 Vacuum suction hole 20 Frame-shaped clamper 25 Male mold 30 Take-out robot 40 Fitting recess for installing decorative parts

Claims (6)

[Claims] A sheet supplying step of supplying a painted sheet on a female parting surface; a clamping step of fixing and holding the painted sheet on the female parting surface; A stretching step of stretching so as to be closely adhered along the cavity, a mold clamping step of moving one of the female mold and the male mold to the other side and clamping, and between the female mold and the male mold. An injection molding step of injecting and filling a resin in a fluid state from the male mold side into the formed molding cavity, and laminating and integrating the obtained injection resin molded article and the painted sheet; and the female mold and the male mold And a take-out step of taking out a laminated product on which the painted sheet is adhesively laminated from the female mold, before the stretching step, at a specific portion of the cavity of the female mold, Decorative parts such as It is arranged in a detachable state along the product take-out direction, and the decorative part, the painted sheet, and the injection resin molded body are integrated by the stretching step and the injection molding step. Injection molding simultaneous painting method. 2. A method according to claim 1, further comprising the step of: supplying a painting sheet on the parting surface of the female mold, and pressing and fixing the supplied painting sheet on the parting surface by clamping means. Along with stretching the sheet along the female mold cavity by vacuum suction means or the like, and by clamping the male and female molds,
The resin in the fluid state from the injection molding machine is injected and filled from the male mold into a molding cavity formed between the female mold and the male mold, and after the resin is solidified, the mold opening of the male and female molds is performed. Performing, in the injection molding simultaneous painting apparatus that is configured to take out a laminated product in which a painted sheet is adhesively laminated from both the male and female molds, a decorative part such as a name plate is provided at a specific portion of the cavity of the female mold. An apparatus for simultaneous painting by injection molding, further comprising a component installation portion which is positioned and fixed so as to be detachable along the direction of taking out the laminated product. 3. The simultaneous injection molding and painting apparatus according to claim 2, wherein the component installation section is a fitting recess into which the decorative component is removably fitted along the direction of taking out the laminated product. . 4. An integrated means such as an adhesive, a pressure-sensitive adhesive, or a double-sided adhesive tape is provided on a side of a decorative sheet of the decorative part on the side of the decorative sheet. The simultaneous injection molding and painting apparatus according to claim 2. 5. An integrated projection protruding toward the cavity of the female mold for integrating with the laminated product is provided on a side of a decorative sheet of the decorative part. Item 4. The simultaneous injection molding painting apparatus according to Item 2 or 3. 6. The simultaneous injection molding method according to claim 5, wherein the integrated convex portion is provided with a catch portion protruding in a direction of undercut with respect to the direction of taking out the laminated product. Painting equipment.