JPH0615672A - Device for producing composite molded item - Google Patents

Abstract

PURPOSE:To easily mold a molded item with a skin material integrally adhering to the surface of a thermoplastic resin substrate having through holes by providing movable members or lugs for pressing the skin material against a molding surface of a mold consisting of upper and lower molds. CONSTITUTION:A melt resin lead-in path 10a and pins 5 which can protrude into a cavity are provided in a lower mold 2 of a press molding equipment. It is preferable that a pad 3 energized upward is provided around the lower mold 2. A woven cloth 6 is spread over the pad 3 to be placed. By lowering an upper mold 1, the woven cloth 6 is temporarily fixed by the upper mold 1 and the pad 3. By raising the pins 5, the woven cloth 6 is brought into close contact with a cavity surface. After a melt resin is supplied, the mold is clamped. The pins 5 are lowered after cooling. In addition, lugs may be provided on a molding surface in place of the pins 5. On the other hand, recessed parts to be fitted with the lugs are provided in the other molding surface; through- holes formed by the lugs are not covered with a woven cloth in a molded item.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a composite molded article in which a surface material of a thermoplastic resin having a through hole is entangled with a skin material and integrally molded.

[0002]

2. Description of the Related Art In radios, stereos, televisions, and various other audio products, as is typically found in speaker boxes and the like, the source of sound from speakers and the like has a combination of the purpose of protection and the function of exterior design. It has been conventionally practiced to cover the above with a protective material.

The composite molded article used for such an exterior is generally manufactured by adhering a skin material to the surface of a synthetic resin having through holes in a previously manufactured base material with an adhesive or the like.

[0004]

However, in the above-mentioned conventional structure, in order to manufacture a composite molded article, a step of previously forming a through hole in a base material, a step of applying an adhesive agent, a subsequent bonding step, etc. are performed. Since it is necessary, there is a problem that the manufacturing cost of the composite molded product is high. Moreover, there is a problem in that the skin material may be peeled off during use due to contact with other instruments or deterioration of the adhesive, resulting in lack of reliability.

[0005]

In order to solve the above-mentioned problems, an apparatus for producing a composite molded article according to the invention of claim 1
A pair of molding dies is configured with an upper mold and a lower mold, and one of these upper and lower molds is a movable mold and the other is a fixed mold, and the skin material can be pressed against the molding surface of the mold. In addition, at least one of the upper and lower molds is provided with a movable member that can be retracted outside the cavity.

In order to solve the above-mentioned problems, in the apparatus for manufacturing a composite molded product according to the second aspect of the present invention, a pair of upper and lower molds is formed, and one of these upper and lower molds is formed. Is a movable type and the other is a fixed type, support means for elastically supporting the skin material between the upper die and the lower die, and capable of pressing the skin material on the molding surface of the mold, and It is characterized in that a movable member that can be retracted outside the cavity is provided in at least one of the upper and lower molds.

In order to solve the above-mentioned problems, the apparatus for manufacturing a composite molded product according to the third aspect of the present invention comprises a pair of upper and lower molds, and one of these upper and lower molds is formed. Is a movable mold and the other is a fixed mold, and a protrusion for pressing the skin material on the molding surface of the mold is provided on at least one molding surface of the upper and lower molds.

In order to solve the above-mentioned problems, in the apparatus for manufacturing a composite molded product according to the fourth aspect of the present invention, the upper mold and the lower mold form a pair of molds, and one of these upper and lower molds is formed. Is a movable type and the other is a fixed type, and projections for sandwiching the skin material are provided so as to face the molding surfaces of the upper and lower dies, respectively.

In order to solve the above-mentioned problems, in the apparatus for manufacturing a composite molded product according to the fifth aspect of the present invention, the upper mold and the lower mold form a pair of molds, and one of these upper and lower molds is formed. Is a movable type and the other is a fixed type. One of the molding surfaces of the upper and lower molds is provided with a protrusion, and the other is formed with a recess that fits into the protrusion.

In order to solve the above-mentioned problems, in the apparatus for manufacturing a composite molded article according to the sixth aspect of the present invention, a pair of upper and lower molds is formed, and one of these upper and lower molds is formed. Is a movable type and the other is a fixed type, one side of the molding surface of the upper and lower molds is provided with a protrusion, and the other side is provided with a concave portion that fits into the protrusion It is characterized in that various movable members are inserted.

In order to solve the above-mentioned problems, in the apparatus for manufacturing a composite molded article according to the present invention, a pair of upper and lower molds is formed, and one of these upper and lower molds is formed. Is a movable die and the other is a fixed die, and a concave portion is formed at a position facing the upper and lower mold surfaces, and a movable member that is slidable and movable in both concave portions is inserted in each concave portion. Is characterized by.

[0012]

According to the structure of claim 1, the molten thermoplastic resin is supplied in a state where the movable member makes the skin material such as the woven fabric adhere to the molding surface of the upper mold or the lower mold, and the molten resin is clamped by the mold. By molding by pressing, it is possible to easily manufacture a composite molded article in which the surface material of the thermoplastic resin is firmly entangled with the surface material and is integrated. Moreover, in this composite molded article, a through hole is formed in the portion where the movable member was disposed, and the surface of the through hole is covered with the skin material. Therefore, according to this configuration, it is possible to easily manufacture a composite molded article having a through hole and having a surface of the through hole covered with a skin material.

According to the structure of claim 2, the above-mentioned claim 1
In addition to the above action, since the skin material is supported by the supporting means, the skin material can be easily pressed against the molding surface of the mold by the movable member.

According to the third aspect of the present invention, the molten thermoplastic resin is supplied in a state in which the skin material such as the woven fabric is brought into close contact with the molding surface of the upper mold or the lower mold by the protrusions, and pressure is applied by clamping the mold. If molded by the above method, it is possible to easily manufacture a composite molded article in which the surface material of the thermoplastic resin is firmly entangled with the surface material and is integrated. Moreover, in this composite molded article, a through hole is formed in the portion where the protrusion was arranged, and the surface of the through hole is covered with the skin material. Therefore, according to the present configuration, it is possible to easily manufacture a composite molded article having a through hole and the surface of the through hole being covered with a skin material, and the manufacturing apparatus has a structure that is different from the case where a movable member is used. To simplify.

According to the structure of claim 4, it is possible to manufacture a composite molded article in which the skin material enters the through holes.

According to the structure of claim 5, the skin material can be sheared by the projections and the recesses, and the skin material can be perforated. This allows
It is possible to manufacture a composite molded article having a through hole and the surface of the through hole not covered with the skin material.

According to the structure of claim 6, in addition to the function of claim 5, the skin material can be pierced while the skin material is sandwiched by the projection and the movable member. Thereby, more reliable perforation can be performed.

According to the structure of claim 7, a composite molded article having a through hole can be manufactured, and by adjusting the height at which the movable member is set, the through hole may or may not be covered with a skin material. You can also

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the present invention with reference to FIGS.

As an example of the composite molded product, a front panel used in audio products such as radios and stereos is shown in FIGS. 4 and 5. The front panel is a base material 1 made of a thermoplastic resin.
7 and a skin material 16 such as a woven cloth. The skin material 16 is entwined with the surface of the base material 17, and is formed integrally with the base material 17. The base material 17 has a plurality of through holes 8 for passing sound from a speaker (not shown).
... is formed.

The press molding apparatus for manufacturing the above-mentioned front panel comprises an upper mold 1 and a lower mold 2, as shown in FIG. The upper mold 1 is movable up and down, and the upper mold 1
As a result, the cavity shaped like a composite molded product is formed between the upper mold 1 and the lower mold 2. The upper mold 1 and the lower mold 2 are provided with passages 1a ..., Passages 2a .. The lower mold 2 is further provided with an introduction path 10a for guiding the molten resin from the heating tank 10 to the cavity portion, and a hydraulic transmission system 5.
a and the hydraulic pressure from the hydraulic transmission system 5a move up and down,
Pins 5 (movable members) capable of protruding into the cavity are arranged. The pin 5 ...
It is used for forming the through holes 8 of the base material 17. Therefore, the pins 5 are manufactured according to the cross-sectional shape of the through holes 8.

Around the lower die 2, movable pads 3 (supporting means) urged upward by urging means 3a such as hydraulic pressure, air pressure or springs are provided.
By lowering, the skin material 16 can be sandwiched between the upper surfaces of the pads 3 and the lower surface 1b of the upper die 1 and semi-fixed. Here, semi-fixing means that the skin material 16 can be easily pulled up by the pins 5 and is not loosened.

At the time of manufacturing the front panel, as shown in FIG. 2 (a), a woven cloth 6 as a material for the skin material 16 is spread and placed on the pads 3. At this time, the height of the pins 5 ... Is adjusted by the hydraulic pressure from the hydraulic transmission system 5a so that the upper surface of the pins 5 ... Aligns with the upper surface of the pads 3 ... This is convenient because it does not hang down.

Next, as shown in FIG. 3B, the upper mold 1 is lowered. At this time, the clearance between the upper mold 1 and the lower mold 2 is slightly larger than the clearance when the final cavity is formed, that is, slightly larger than the thickness of the front panel to be manufactured. Thus, the lower position of the upper mold 1 is set. As the upper die 1 descends, the lower surface 1b of the upper die 1 presses the pads 3 ..., and the pads 3 ... descend together with the woven cloth 6. Thereby, the woven cloth 6 is semi-fixed between the lower surface 1b of the upper mold 1 and the upper surfaces of the pads 3. Then, the pins 5 are raised and the woven fabric 6 is pulled up to be brought into close contact with the inner surface of the upper mold 1 on the cavity side. At this time, woven fabric 6
Since it is semi-fixed, it can be pulled up easily and does not loosen. Subsequently, the molten resin 7 obtained by heating the thermoplastic resin in the heating tank 10 is supplied between the woven fabric 6 and the lower mold 2 through the introduction path 10a.

Then, as shown in FIG.
To the final position. That is, the mold is clamped. As a result, the molten resin 7 spreads over the entire cavity and pressure molding is performed. The woven cloth 6 is spread by the molten resin 7 and pressed against the inner surface of the upper mold 1. Therefore, pin 5
Woven fabric 6 except for the portion pressed against the inner surface of the upper die 1 by
The molten resin 7 enters the gaps between the fibers.

After this, the cooling water is passed through the passages 1a ...
a, and the upper mold 1 and the lower mold 2 are cooled. As a result, the temperature of the molten resin 7 in contact with the upper die 1, the lower die 2 and the pins 5 ... When the surface of the molten resin 7 is cured to some extent and the shape of the front panel can be maintained, the pins 5 ... Are lowered and drawn into the lower mold 2.

As a result, through holes 8 are formed only in the resin portion, as shown in FIG. When the molten resin 7 is sufficiently cooled and completely hardened, the upper mold 1 is raised to open the mold. Then, the front panel in which the base material 17 and the woven fabric 6 as the skin material 16 are integrally molded is taken out.

As described above, according to the press-molding apparatus of this embodiment, the woven cloth 6 is pressed against the inner surface of the upper mold 1 by the pins 5, so that the surface of the base material 17 made of a thermoplastic resin is woven. It is possible to easily manufacture the front panel in which the cloth 6 is entangled and integrated, and the through holes 8 are formed only in the base material 17.

As the thermoplastic resin for the above-mentioned base material 17,
Specifically, polystyrene, acrylonitrile-butadiene-styrene copolymer resin, acrylonitrile-styrene copolymer resin, polystyrene-based resin such as polyphenylene ether / polystyrene alloy, polycarbonate,
Polymethylmethacryl resin and the like are suitable materials.

In the case of a composite molded product which is required to have heat resistance such as a car stereo case, heat resistant ABS or the like is suitable. Any thermoplastic resin may be used as long as it is a thermoplastic resin used for injection molding, press molding and the like.

Examples of the skin material 16 include woven fabrics, knitted fabrics, and non-woven fabrics made of various fibers such as polyester fibers and polyamide fibers, as well as mesh products having a mesh structure such as wire mesh, and metal having many holes. Porous material such as thin plate of resin, sheet or film made of thermoplastic resin or thermoplastic elastomer, foam made of thermoplastic resin (for example, polyolefin resin, polyvinyl chloride resin, polystyrene resin), thermosetting resin A foam (for example, a polyurethane resin) or a foam such as a rubber (for example, cis-1,4-polybutadiene, ethylene-propylene copolymer) foam can be used. Each of these may be used alone, or may be used as a composite material in which two or more kinds of these are appropriately combined and laminated, and the surface thereof may be provided with an uneven pattern such as grain.

In using these skin materials 16,
Preheating may be performed in advance in order to adjust the tensile stress or elongation of the skin material 16, or preforming may be performed.

When the skin material 16 is melted together with the thermoplastic resin, they are mutually fused and heat welding, which is a form of entanglement, is performed, and the thermoplastic resin and the skin material 16 are integrated. Further, when the skin material 16 is fibrous and is not heat-melted or has a very high melting temperature, the end portions of the fibers enter the melted thermoplastic resin, which is a form of entangling. Anchoring is performed, and the thermoplastic resin and the skin material 16 are integrated.
Further, when the skin material 16 is a net-like material having a mesh structure, a metal having a large number of pores, a thin plate of resin, or the like, the melted thermoplastic resin partially fills the spaces between the meshes or the pores to prevent entanglement. One form of so-called embedding is performed, and the thermoplastic resin and the skin material 16 are integrated.

When a thin plate made of metal, resin, or the like having a large number of holes is used as the skin material 16, if the surface contacting with the thermoplastic resin is preliminarily made uneven or roughened, the Since the adhesion is promoted, a stronger and integrally molded product can be obtained.

Further, when the skin material 16 is difficult to be heat-sealed with the thermoplastic resin as the base material 17, the thermoplastic resin is easily heat-sealed between the thermoplastic resin and the skin material 16. By interposing a film or sheet, a stronger solid integrally molded product can be obtained. For this purpose, these films or sheets may be attached to the back surface of the skin material 16 in advance. If necessary, the film or sheet is provided with holes at positions corresponding to the positions of the through holes 8.

The skin material 16 does not necessarily have to be entangled with the entire surface of the base material 17, and may be partially entangled depending on the usage state and product form of the composite molded article.
For example, when the composite molded article is a speaker box, the skin material 16 may be entangled only on the front side of the portion in contact with the speaker.

When the composite molded article is for an acoustic product, at least one through hole 8 is necessary for allowing sound to pass. The number, size, shape, etc. of the through holes 8 are appropriately determined in consideration of the purpose of use. The shape of the through holes 8 ...
As shown in FIG. 4, it may be a large number of cylindrical pores, or may be made up of lattice-like or mesh-like notches. It may consist of a small number of relatively large circular or other shaped notches. The through holes 8 ... Are usually covered with a skin material 16. However, in the case of a composite molded product such as a TV cabinet in which a volume shaft, a push button and the like are inserted in the vicinity of the speaker mounting portion, the through holes 8 ... Good.

As described above, according to the method for manufacturing the composite molded article of this embodiment, since the thermoplastic resin and the skin material 16 are entangled and integrally molded, the through holes 8 having a complicated shape are formed. A composite molded product such as a front panel can be easily manufactured. Therefore, the product cost of the composite molded product is reduced and its reliability is improved.

In the above press molding apparatus, as shown in FIG. 3 (a), vertically movable pins 5 are provided on the lower mold 2,
Although the woven cloth 6 is pressed against the inner surface of the upper die 1 by these pins 5, ..., The protrusions 5b ... Are provided on the inner surface of the lower die 2 as shown in FIG. Even if the protrusions 5b are provided and the woven cloth 6 is pressed against the inner surface of the upper mold 1, substantially the same effect can be obtained.

Further, as shown in FIG.
The projection 5 is also formed on the inner surface of the upper mold 1 so as to face the projection 5c of the
With the structure in which d is provided and the woven fabric 6 is sandwiched between the protrusions 5c and 5d, it is possible to manufacture a composite molded article in which the woven fabric 6 is inserted into the through holes 8.

Further, as shown in FIG. 3D, vertically movable pins 5 are provided on the upper mold 1, and projections 5e are provided on the inner surface of the lower mold 2 so as to face the pins 5. Pin 5
If the woven fabric 6 is sandwiched between the ... and the protrusions 5e, and the protrusions 5e are longer than the final distance between the upper mold 1 and the lower mold 2 (that is, the thickness of the composite molded product), Since the projections 5e press the pins 5 and enter the upper mold 1, the woven cloth 6 on the through holes 8 is sheared by the projections 5e and punched. As a result, the through holes 8 ...
It is possible to manufacture a composite molded article which is not covered with.

Furthermore, as shown in FIG. 6 (e), the upper mold 1 and the lower mold 2 are arranged so that the vertically movable pins 5 are opposed to each other.
In the configuration provided in and, by adjusting the height of the pins 5 of the upper mold 1 and the height of the pins 5 of the lower mold 2,
The pins 5 ... Or the protrusions 5b in FIGS.
It is possible to correspond to any of the cases of including ~ 5e.

Table 1 shows the finished state of the front panel obtained when the pins 5 ... Or the projections 5b to 5e in FIGS. 3 (a) to 3 (e) are used. In the table, the resin thin skin is a thin resin film remaining on the through hole 8 side of the skin material 16.

In the above embodiments, the pads 3 ... Are provided to press the woven fabric 6 against the lower surface 1b of the lower mold 2 to semi-fix it. Therefore, as long as the woven fabric 6 can be semi-fixed, the pads 3 ... Does not need to be arranged all around the lower mold 2.

In the above embodiment, the pin 5 is attached to the lower mold 2.
Are arranged and the woven cloth 6 is pressed against the inner surface of the upper mold 1, but conversely, when the pins 5 are arranged on the upper mold 1 and the woven cloth 6 is pressed against the inner surface of the lower mold 2. Of course, it doesn't matter.
Further, the upper mold 1 may be a fixed mold and the lower mold 2 may be a movable mold. Further, a pin (movable member, not shown) that can be moved left and right may be arranged so that a composite molded product having through holes 8 ...

[0046]

[Table 1]

In the apparatus for manufacturing a composite molded product according to the first aspect of the present invention, the upper mold 1 and the lower mold 2 form a pair of molding dies, and the upper mold 1 is a movable mold and the lower mold 2 is a mold. Since the lower mold 2 is provided with the fixed mold 5 which can press the skin material 16 against the molding surface of the upper mold 1 and can be retracted to the outside of the cavity, the pins 5 ... When the skin material 16 such as the woven cloth 6 is brought into close contact with the molding surface of the upper mold 1, the molten resin 7 is supplied and pressure is applied by clamping to mold the woven cloth 6 on the surface of the thermoplastic resin. It is possible to easily manufacture a composite molded article in which the skin material 16 is firmly entangled and integrated. Moreover, in this composite molded article, through holes 8 are formed in the portions where the pins 5 were arranged, and the surface of the through holes 8 is covered with the skin material 16. Therefore, according to this configuration, the through-holes 8 have the through-holes 8 ...
A composite molded article covered with can be easily manufactured.

In the apparatus for manufacturing a composite molded article according to the second aspect of the present invention, the upper die 1 and the lower die 2 form a pair of forming dies, and the upper die 1 is a movable die and the lower die 2 is a die. The fixed die is a pad 3 that elastically supports the skin material 16 between the upper die 1 and the lower die 2, and the skin material 16 can be pressed against the molding surface of the upper die 1, and Since the lower mold 2 is provided with the pins 5 which can be retracted outside the tee, when the skin material 16 such as the woven fabric 6 is brought into close contact with the molding surface of the upper mold 1, the skin material 16
Does not come loose. That is, the skin material 16 is less likely to wrinkle. Therefore, the finish of the composite molded product is improved.

In the apparatus for manufacturing a composite molded article according to the third aspect of the present invention, the upper die 1 and the lower die 2 form a pair of forming dies, and the upper die 1 is a movable die and the lower die 2 is It is a fixed mold, and the projections 5b that press the skin material 16 against the molding surface of the upper mold 1 ...
Is provided on the molding surface of the lower mold 2, the molten resin 7 is supplied in a state where the skin material 16 such as the woven fabric 6 is brought into close contact with the molding surface of the upper mold 1 by the protrusions 5b ... By pressurizing and molding, a composite molded product in which the surface material 16 such as the woven fabric 6 is firmly entangled with the surface of the thermoplastic resin and is integrated can be easily manufactured. Moreover, in this composite molded product, the protrusion 5b
The through-holes 8 ... Are formed in the portions where the ... Are arranged, and the surfaces of the through-holes 8 ... Therefore, according to this configuration, the through holes 8 ...
The composite molded article whose surface is covered with the skin material 16 can be easily manufactured, and the structure of the manufacturing apparatus is simplified as compared with the case where the pins 5 are used.

In the apparatus for manufacturing a composite molded article according to the fourth aspect of the present invention, the upper die 1 and the lower die 2 form a pair of forming dies, and the upper die 1 is a movable die and the lower die 2 is Since the protrusions 5c, 5d, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5c, 5d, 5c, 5c, 5c, 5d sandwiching the skin material 16 are provided to face the molding surfaces of the upper and lower molds 1, 2 respectively, the skin material 16 is inserted into the through holes 8. A molded product can be manufactured.

In the apparatus for manufacturing a composite molded article according to the fifth aspect of the present invention, the upper die 1 and the lower die 2 form a pair of forming dies, and the upper die 1 is a movable die and the lower die 2 is Since it is a fixed mold, the molding surface of the lower mold 2 is provided with the projections 5e, and the upper mold 1 is provided with a concave portion that fits into the projections 5e. Can be sheared and the skin material 16 can be perforated. As a result, the through holes 8 ...
It is possible to manufacture a composite molded article in which the surface of the through holes 8 ... Is not covered with the skin material 16.

In the apparatus for manufacturing a composite molded article according to the sixth aspect of the present invention, the upper die 1 and the lower die 2 form a pair of forming dies, and the upper die 1 is a movable die and the lower die 2 is A fixed mold, in which the molding surface of the lower mold 2 is provided with projections 5e, and a concave portion that fits into the projections 5e is formed in the upper mold 1, and the pin is slidably movable in the concave portion. Since 5 ... Is inserted, the skin material 16 can be perforated while sandwiching the skin material 16 by the protrusions 5e ... and the pins 5. Thereby, more reliable perforation can be performed.

In the apparatus for manufacturing a composite molded product according to the seventh aspect of the present invention, the upper die 1 and the lower die 2 form a pair of forming dies, and the upper die 1 is a movable die and the lower die 2 is It is a fixed mold, and recesses are formed at positions facing the molding surfaces of the upper and lower molds 1 and 2. Pins 5 that are slidably movable in both recesses are inserted into the recesses, so A composite molded article having holes 8 ... Can be manufactured, and the through holes 8 can be covered or not covered with the skin material 16 by adjusting the height at which the pins 5 are set. Thereby, the manufacturing cost of the composite molded product can be further reduced.

[0054]

As described above, in the apparatus for manufacturing a composite molded article according to the first aspect of the present invention, the upper mold and the lower mold form a pair of molds, and one of the upper mold and the lower mold moves. At least one of the upper and lower molds is provided with a movable member that is a mold and the other is a fixed mold, and that can press the skin material against the molding surface of the mold and can retract to the outside of the cavity. Therefore, if the molten material is supplied to the molding surface of the upper mold or the lower mold by the movable member and the molten thermoplastic resin is supplied and pressure is applied by mold clamping, the surface of the thermoplastic resin is covered with the skin. It is possible to easily manufacture a composite molded product in which the materials are firmly entangled and integrated. Moreover, in this composite molded article, a through hole is formed in the portion where the movable member was disposed, and the surface of the through hole is covered with the skin material. Therefore, according to this configuration, it is possible to easily manufacture a composite molded article having a through hole and having a surface of the through hole covered with a skin material.

In the apparatus for manufacturing a composite molded product according to the second aspect of the present invention, as described above, the upper mold and the lower mold form a pair of molds, and one of these upper and lower molds is a movable mold. The other one is a fixed die, a supporting means for elastically supporting the skin material between the upper die and the lower die, the skin material can be pressed against the molding surface of the mold, and the outside of the cavity. Since at least one of the upper and lower molds is provided with a movable member which can be retracted, the effect of claim 1 is obtained, and when the skin material is brought into close contact with the molding surface of the upper mold or the lower mold, Does not come loose. That is, the skin material is less likely to wrinkle. Therefore, there is an effect that the finish of the composite molded product is improved.

As described above, in the apparatus for manufacturing a composite molded article according to the third aspect of the present invention, the upper die and the lower die form a pair of forming dies, and one of these upper and lower dies is a movable die. Yes, the other is a fixed type, and since the protrusions that press the skin material on the molding surface of the mold are provided on at least one of the upper and lower mold surfaces, the upper surface of the woven fabric or the like is covered by the protrusions. Alternatively, if the molten thermoplastic resin is supplied in a state of being in close contact with the molding surface of the lower mold and pressure is applied by the mold clamping to mold,
It is possible to easily manufacture a composite molded article in which a surface material such as a woven fabric is firmly entangled with the surface of the thermoplastic resin and is integrated. Moreover, in this composite molded article, a through hole is formed in the portion where the protrusion was arranged, and the surface of the through hole is covered with the skin material. Therefore, according to this configuration, the through hole is provided,
The composite molded article in which the surface of the through hole is covered with the skin material can be easily manufactured, and the structure of the manufacturing apparatus is simplified as compared with the case where the movable member is used.

As described above, in the apparatus for producing a composite molded product according to the invention of claim 4, the upper mold and the lower mold form a pair of molding dies, and one of these upper and lower dies is a movable mold. The other one is a fixed type, and since the projections for sandwiching the skin material are provided to face the molding surfaces of the upper and lower molds respectively, it is possible to produce a composite molded product in which the skin material enters the through hole. .

As described above, in the apparatus for manufacturing a composite molded article according to the fifth aspect of the present invention, the upper die and the lower die form a pair of forming dies, and one of these upper and lower dies is a movable die. Yes The other is a fixed type, one side of the molding surface of the upper and lower mold is provided with a protrusion, and the other side is formed with a recessed portion, so the skin material is sheared by the protrusion and the recessed surface, The material can be drilled. As a result, it is possible to manufacture a composite molded product having a through hole and the surface of the through hole not covered with the skin material.

As described above, in the apparatus for manufacturing a composite molded article according to the sixth aspect of the present invention, the upper die and the lower die form a pair of forming dies, and one of these upper and lower dies is a movable die. Yes The other is a fixed mold, a protrusion is provided on one of the molding surfaces of the upper and lower molds, and a concave portion that fits into the protrusion is formed on the other surface. Since it is inserted, in addition to the effect of the above-mentioned claim 5, the skin material can be punched while the skin material is sandwiched by the protrusion and the movable member. Thereby, there is an effect that more reliable perforation can be performed.

As described above, in the apparatus for manufacturing a composite molded article according to the seventh aspect of the present invention, the upper die and the lower die constitute a pair of forming dies, and one of these upper and lower dies is a movable die. Yes, the other is a fixed mold, and recesses are formed at opposite positions of the molding surfaces of the upper and lower molds, and a movable member that slides in both recesses and is movable is inserted into each recess. It is possible to manufacture a composite molded article having the above, and by adjusting the height at which the movable member is set, it is possible to cover the through holes with or without the covering material. Thereby, there is an effect that the manufacturing cost of the composite molded product can be further reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an apparatus for manufacturing a composite molded article according to the present invention.

FIG. 2 is an explanatory view showing a method for manufacturing a composite molded article by the manufacturing apparatus in FIG.

FIG. 3 is an explanatory diagram showing a variation of the structures of the upper mold and the lower mold of FIG.

FIG. 4 is a perspective view of a front panel of an acoustic product, showing an example of a composite molded product.

5 is a cross-sectional view taken along line AA of the composite molded product of the acoustic product of FIG.

[Explanation of symbols]

 1 Upper Mold 2 Lower Mold 3 Pad (Supporting Means) 3a Energizing Means 5 Pins (Movable Member) 5b Projection 5c Projection 5d Projection 5e Projection 6 Woven Cloth (Skin Material) 7 Molten Resin 8 Through Hole 10a Introducing Path 16 Skin Material 17 Base material

Claims (7)

[Claims] 1. An upper die and a lower die constitute a pair of forming dies, and one of these upper and lower dies is a moving die and the other is a fixed die, and a skin material is formed on the forming surface of the die. An apparatus for manufacturing a composite molded article, characterized in that at least one of the upper and lower molds is provided with a movable member that can be pressed and retracted to the outside of the cavity. 2. An upper die and a lower die form a pair of forming dies, and one of these upper and lower dies is a movable die and the other is a fixed die, and the upper die and the lower die are provided between the upper die and the lower die. At least one of the upper and lower molds is provided with a supporting means for elastically supporting the skin material and a movable member capable of pressing the skin material against the molding surface of the mold and retractable outside the cavity. An apparatus for manufacturing a composite molded article, which is characterized in that 3. An upper die and a lower die constitute a pair of forming dies, and one of these upper and lower dies is a moving die and the other is a fixed die, and a skin material is provided on the forming surface of the die. An apparatus for manufacturing a composite molded article, characterized in that a pressing projection is provided on at least one molding surface of the upper and lower molds. 4. An upper die and a lower die constitute a pair of forming dies, and one of these upper and lower dies is a movable die and the other is a fixed die, and projections for sandwiching a skin material are respectively upper and lower. An apparatus for manufacturing a composite molded article, which is provided so as to correspond to a molding surface of a mold. 5. An upper die and a lower die constitute a pair of forming dies, and one of these upper and lower dies is a moving die and the other is a fixed die, and a protrusion is formed on one of the forming surfaces of the upper and lower dies. Is provided, and a concave portion that fits into the protrusion is formed on the other side. 6. An upper die and a lower die constitute a pair of forming dies, and one of these upper and lower dies is a moving die and the other is a fixed die, and a protrusion is formed on one of the forming surfaces of the upper and lower dies. Is provided, and a concave portion that fits into the protrusion is formed on the other side, and a movable member that is slidably movable is inserted into the concave portion. 7. An upper die and a lower die constitute a pair of forming dies, and one of these upper and lower dies is a movable die and the other is a fixed die, and the upper and lower dies are provided at opposing positions of the upper and lower die forming surfaces. An apparatus for manufacturing a composite molded article, characterized in that recesses are formed, and a movable member that is slidable in both recesses is inserted into each recess.