JP2003154542A - Method for manufacturing partial skin laminating resin molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a resin molding which is entirely rigid by surely embedding to hold the end of a skin by holding decorativeness good. SOLUTION: The method for manufacturing the partial skin laminating resin molding comprises the steps of clamping a core die 10 assembling the skin 1 with a mold surface by a cavity mold 11, then injecting first a molten resin E1 at the general part forming side 16a of the molding to fill the resin to the bottom of a receiving groove 13 deeper than the length of the terminal wound with the skin 1, forming the general part 2a of the molding having a flange 3a for embedding and holding the skin end 1a, then injecting the molten resin E2 to the backing part forming side 16b of the front mounting skin 1b to fill to the vacant space of a slide block 12, forming the backing part 2b of the front mounting skin 1b having a flange 3b opposed to a flange 3a for embedding and holding the front skin end 1a, and integrally connecting the general part 2a of the molding and the backing part 2b of the front mounting skin 1b to the flanges 3a, 3b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin in which a skin end portion is embedded inside, a main surface excluding the skin end portion is partially adhered as a cover skin portion, and a resin molded product is cut into a predetermined area shape. The present invention relates to a method for producing a partially skin-covered resin molded product that is integrally molded with a material.

[0002]

2. Description of the Related Art When an automobile door lining is exemplified as a resin molded product, as shown in FIG. 23, a skin material cut from a sheet material made of a material different from general surfaces such as genuine leather, synthetic leather or fabric into a predetermined area shape. By partially attaching H to the upper side of the armrest A, the center pad P
Is provided on the front surface side of the lining body R.

To provide the center pad P, the structure shown in FIG.
When the lining body R is resin-molded as shown in FIG. 4, a wood grain groove g is provided on the surface side to wind the outer peripheral edge of the skin material and fix the same, and as shown in FIG. It is carried out that the skin material H is partially attached by post-wrapping it by being rolled up in g.

When the cut-out shape of the skin material H including the outer peripheral edge and the contour shape of the wood grain groove g do not match in the retrofitting of the skin material, as shown in FIG. g is exposed to the outside, or FIG.
As shown by (4), the outer peripheral edge h is rolled out due to the outer peripheral edge excess due to the overly wide skin material H. Further, if the thickness of the skin material and the groove width of the wood grain groove do not match, it is impossible to wind the outer peripheral edge due to the skin material being too thick, or a gap is formed in the wood grain groove due to the skin material being too thin.

When the skin material is retrofitted, not only is it necessary to strictly control the cut shape, the thickness of the skin material, the contour shape of the wood-grained groove, the groove width, etc., but also the skin material is misaligned and twisted and wrinkled. Alternatively, it is required to bond them carefully so as not to cause swelling due to the intake of air, which is a very troublesome work.

On the other hand, as shown in FIG. 28, a core mold M ₁ having a concave groove G on the mold surface and a convex portion B for inserting the outer peripheral edge h of the skin material H into the concave groove G of the core mold M _1. Using the cavity mold M ₂ provided with the above, the general part r ₁ of the lining body R and the lining part r ₂ of the outer covering skin part are entirely injection-molded, and at the same time, the outer peripheral edge h of the skin material H is made into the core mold M _1. The skin material H is partially adhered by embedding it in the groove of the wood grain groove g by the concave groove G.

In the partial skin attachment and the simultaneous molding of the lining body, it is possible to prevent the skin material from being misaligned, twisted wrinkles, or swollen due to the intake of air. However, as shown in FIG. The trace left by is the wood grain groove g
Since it remains as a gap of No. 6, the gap of the wood grain groove g is exposed to the outside of the product.

Instead of simultaneously molding the lining body from the general portion of the lining body as a whole, first, the lining portion of the outer covering skin is injection-molded, and then the general portion of the lining body is injection-molded to form the skin. A method for manufacturing a resin molded product in which the outer peripheral edge of the material is embedded and held in the joint between the lining portion of the skin material and the general portion of the lining body to integrally form the lining portion of the exterior skin portion and the general portion of the lining body. Has been proposed (JP-A-8-30038).
No. 0).

The method of manufacturing the resin molded product comprises a core mold 20 and a cavity mold 21 as shown in FIG. 30, and has a contour shape corresponding to the cut shape of the skin material H, and the mold surface of the cavity mold 21. The slide groove 22 that moves forward or backward toward the inside is provided in the mold of the core mold 20, and the inner peripheral surface of the slide block 22 defines the groove outer circumference.
3 is provided on the mold surface of the core mold 20, and the molding die in which the protruding teeth 24 whose tooth tips are aligned with the inner peripheral edge of the slide block 22 are provided on the mold surface of the cavity mold 21 is disclosed.

In the molding die, first, the outer peripheral edge h of the skin material H is received by the tip surface of the slide block 22 when the mold is opened, and the skin material H is pressed against and supported by the slide block 22 on the mold surface of the cavity mold 21. Then, after the molten resin E ₁ is injected from the resin injection gate 25 to the mold surface of the core mold 20 in the frame of the slide block 22, the outer peripheral edge h of the skin material H is slid while receiving the outer peripheral edge h of the slide block 22. Block 22
The cavity mold 21 is moved toward the core mold 20 while pressing and retracting.

When the core die 20 is clamped by the cavity die 21, the outer peripheral edge h of the skin material H is sandwiched between the tip surface of the slide block 22 and the protruding teeth 24 of the cavity die 21 as shown in FIG. The ridges 24 are provided on the side of forming the lining portion, which is integrated with the outer cover, and on the side of forming the general portion of the molded product.
First, the molten resin injected into the mold surface of the core mold 20 is made to flow from the back surface side of the cover skin portion to the inside of the receiving groove 22 defined by the slide block 22, so that the cover skin portion is formed. Forming a backing portion r ₂ having a flange portion f ₂ rising on the back surface side of the.

After forming the backing portion r ₂ , as shown in FIG. 32, the slide block 22 is retracted to near the groove bottom of the receiving groove 23 to move the outer peripheral edge h of the skin material H to the cavity mold 21.
Release the pressure contact with the mold surface of. By releasing the pressure contact of the outer peripheral edge by the slide block 22, the outer peripheral edge h of the skin material H hangs in the empty space of the slide block 22 by its own weight, and the molten resin E ₂ is formed into a general part of the molded product as shown in FIG. The lining body is generally filled with the liquid by injecting it from the side to fill the empty space of the slide block 22.
₁ is formed.

By filling with the molten resin E _2, a general portion r ₁ having a flange portion F ₁ rising inward of the lining body R is formed as shown in FIG.
Flange _{F 2} a of the outer peripheral edge of the backing portion _{r 2} and the general portion _{r 1}
While the embedding held by the flange portion F _1, is disclosed to form a generally integral lining body R by joining the backing portion r ₂ and the general portion r ₁ in mutual flange portion F _1, F ₂ ing.

However, in the method of manufacturing the resin molded product, even when the outer peripheral edge of the outer peripheral edge of the outer peripheral edge h of the outer peripheral edge of the outer peripheral edge h of the outer peripheral edge of the outer peripheral edge of the outer peripheral edge h of the outer peripheral edge of the outer peripheral material H is adhered to the outer peripheral edge of the outer peripheral material by the sliding block 22. Does not always hang in the empty space of the slide block 22 by its own weight (see FIG. 32).

When the molten resin E ₂ is injected into the general part forming side of the molded product without the outer peripheral edge of the skin material hanging down, the molten resin E ₂ flows from the outer peripheral edge of the skin material to the lower side and the outside of the skin material The peripheral edge is exposed to the front surface side, or the outer peripheral edge of the skin material is pressed by the injection pressure of the molten resin E ₂ and is crushed, so that the peripheral edge is curled and solidified.

Therefore, in the above-described method of manufacturing a resin molded product, as shown in FIG. 35, the vacuum ventilation passage 26 communicating with the inside of the receiving groove 23 is provided on the inner side of the receiving groove 23 and the outer peripheral edge h of the skin material H. Is forced to hang into the empty space of the slide block 22.

However, in this case, the slide block 22 is once retracted to the communicating position of the vacuum ventilation passage 26, and the vacuum pressure is applied to the inside of the groove 23 to force the outer peripheral edge of the skin material into the empty space of the slide block 22. Since the slide block 22 must be advanced again to the groove bottom of the receiving groove 23 as shown in FIG. 36 after it is hung down, the molding cycle becomes complicated and the time required for molding the entire lining takes a long time.

In particular, when the skin material is a breathable material such as a fabric, it is difficult to force the skin material to hang down securely into the empty space of the slide block 22 by vacuum pressure. ₂ flows from the outer peripheral edge of the skin material to the lower side to expose the outer peripheral edge of the skin material to the surface side, or
It is unavoidable that the outer peripheral edge of the skin material is pressed by the injection pressure of the molten resin E ₂ and is crushed to be wrinkled.

In addition to the resin molding described above, a plurality of small protrusions are provided on the outer peripheral edge of the skin material for positioning and fixing, and the small protrusions are inserted into the core type receiving groove and the outer peripheral edge of the skin material is provided. To the core-type wood grain groove to assemble the skin material onto the core-type mold surface, inject the molten resin from the core-type resin injection gate to the back side of the cover-skin, and mold the lining to form the skin. It has been proposed that a resin molded product is formed integrally with a skin material while preventing the material from shifting and wrinkling (Japanese Patent Laid-Open No. 2000-238088).

The method for producing the resin molded product is such that the molten resin injected to the back surface side of the outer skin portion is made to flow outward from the outer peripheral edge of the outer skin material to form a flange portion continuous from the lining portion of the outer skin portion. Is also disclosed. However, according to this method for producing a resin molded product, since the molten resin is only allowed to wrap around the outer peripheral edge of the skin material to form the flange portion, the general portion of the lining body is formed from the outer peripheral flange portion. As such, it lacks joint strength with the backing.

[0021]

DISCLOSURE OF THE INVENTION According to the present invention, the end of the skin material is securely embedded and retained to maintain good decorativeness without exposing a gap or the like, and the resin molded product is formed to be robust as a whole. It is an object of the present invention to provide a method for manufacturing a partially skin-bonded resin molded product, which enables the resin molded product to be integrally formed with a skin material.

[0022]

In the method for producing a partially skin-covered resin molded product according to claim 1 of the present invention, a slide block which advances or retreats toward the mold surface of the cavity mold is provided in the mold. In addition, it has a contour shape that substantially corresponds to the cut shape of the skin material, is deeper than the length of the end where the skin material is wound, and defines the groove surface on the side of the slide block from the inside of the end where the skin material is wound. Using a core type with a receiving groove on the mold surface and a cavity type with a protruding tooth whose tip is aligned with the receiving groove of the slide block, the skin end portion is After winding in the groove and assembling the skin material on the mold surface of the core mold, this core mold is clamped with the cavity mold, the slide block of the core mold is advanced toward the mold surface of the cavity mold, and the skin end part is wound. The base of the slide block is sandwiched between the tip surface of the slide block and the ridged teeth of the cavity type, and the cavity space is divided by the ridged teeth into the general part forming side of the molded product and the lining part forming side of the integrated skin terminal. Is injected into the general part forming side of the molded product to fill the groove bottom of the receiving groove,
A general part of a molded product is formed that has a flange part that embeds and holds the outer skin end part, and then the slide block retracts to the groove bottom of the receiving groove and the molten resin is injected from the back side of the outer skin part to slide block. Filling the empty space of the outer skin, and forming a lining part of the outer skin part that has a flange part that faces and holds the outer skin end part, and forms the general part of the molded product and the lining part of the outer skin part on the flange part. In order to form a resin-molded product in which the exterior skin portion is partially adhered by being integrally joined.

In the method for producing a partially skin-attached resin molded product according to claim 2 of the present invention, a cavity mold provided with protruding teeth having a chevron shape with arcuate inclined surfaces descending from a sharp tooth tip to both sides is used. It is designed to form a resin molded product in which the outer surface skin portion is edged with a V groove.

In the method for manufacturing a partially skin-attached resin molded product according to a third aspect of the present invention, a cavity mold is used which divides the tooth tips of the ridge teeth into the middle mold part and the outer mold part, and the skin skin end part of the slide block. After winding the skin from the tip surface into the groove of the receiving groove and assembling the skin material to the mold surface of the core mold, first, the outer mold part is clamped and the end of the skin is cut into the groove of the receiving groove with one half tooth of the protruding tooth. It is pushed in and supported, and then the middle mold part is clamped until the respective halves of the protruding teeth are aligned with each other, and the slide block is advanced toward the mold surface of the middle mold part, and the winding base of the skin end part is Is sandwiched between the tip surface of the slide block and the other half tooth of the protruding teeth.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, referring to FIGS. 1 to 22, in the illustrated embodiment, a lining body is made of ABS resin or It is applied to provide a center pad by forming a synthetic resin such as polypropylene and at the same time applying a skin material such as a genuine leather, a synthetic leather or a fabric to the surface side of the lining body. When this center pad is provided, the end of the skin material is embedded and fixed at substantially the entire circumference.

To manufacture the door lining, refer to FIG.
An injection molding die including a core die 10 and a cavity die 11 as shown in is used. By using this mold, the end of the skin material (hereinafter referred to as "skin end portion") is embedded and fixed to the inside, and the main surface (hereinafter, "skin surface skin portion") which is a decorative surface excluding the skin end portion. Is partially adhered, and the resin molded product is integrally molded with the skin material cut into a predetermined area shape.

The core mold 10 has a cavity mold 1 with a tip surface.
A slide block 12 that advances or retracts toward the mold surface of No. 1 is provided in the mold. Further, it has a contour shape substantially corresponding to the cut shape of the skin material, is deeper than the length of the end where the skin material is wound, and defines the groove surface on the side surface of the slide block 12 from the inside of the end where the skin material is wound. A receiving groove 13 is provided on the mold surface.

With respect to the core mold 10, a cavity mold 11
Is provided with a projecting tooth 14 whose tooth tip is aligned with the receiving groove 13 of the end of the epidermis. Including this protruding tooth 14,
The slide block 12 and the receiving groove 13 are provided or provided as a center pad having a ring shape or a frame shape substantially corresponding to the cut shape of the skin material so as to be formed by winding the entire circumference.

In addition to its mold construction, the ridge 14 is shown in FIG.
As shown by (4), it is formed to have a mountain shape by arcuate sloped surfaces 14b and 14c descending from the pointed tip 14a to both sides. Further, the slide block 12 is provided with a chamfered end surface that is formed into a rounded shape that matches the sloping surface 14c of the protruding tooth 14. In addition to this, the core mold 10 is provided with a plurality of resin injection gates 15a to 15c, and a plurality of eject pins (not shown) are provided so as to be retractable from the mold surface.

Using the molding die, first, as shown in FIG. 3, the end of the skin material 1 was wound from the tip end surface of the slide block 12 into the groove of the receiving groove 13 and cut into a predetermined area shape in advance. The skin material 1 is attached to the mold surface of the core mold 10. This skin material 1 uses a vacuum holder for adsorbing the skin material and equips the vacuum holder with a wood grain blade type capable of advancing and retreating, thereby automatically assembling from the indentation into the receiving groove 13 of the terminal to the die surface. It can be done either in a straightforward manner or by relying on an operator. Either way, it is done with the mold open, so it can be assembled securely.

When the skin material 1 is assembled to the mold surface of the core mold 10, the receiving groove 13 becomes the skin end portion 1a as shown in FIG.
Since it is formed to a depth W deeper than the length L, the molten resin filling space is maintained even when the skin end portion 1a is wound into the groove of the receiving groove 13 defined by the side surface of the slide block 12.

As shown in FIG. 5, the cavity mold 11 is moved and clamped with respect to the core mold 10 in which the skin material 1 is assembled. With the mold clamping of the cavity mold 11,
As shown in FIG. 6, one half of the inclined surface 14c from the tooth tip 14a of the protruding tooth 14 presses the skin end portion 1a,
The skin terminal portion 1a can be inserted and held in the groove of the receiving groove 13.

After the cavity mold 11 is clamped, the slide block 12 of the core mold 10 is advanced toward the mold surface of the cavity mold 11 as shown in FIG. 7, and as shown in FIG. Slide block 12 for winding base
It is sandwiched between the front end surface of the mold and the protruding teeth 14 of the cavity mold 11, and the cavity space 16 is formed on the general portion forming side 16a of the molded product.
And the ridge 14 on the lining portion formation 16b of the outer cover 1b.
Partition with.

The winding base portion of the skin end portion 1a is tightly sandwiched from the pointed tip 14a of the projecting tooth 14 by the arcuate inclined surface 14c and the rounded chamfered tip end surface of the slide block 12. From the point of view of the cavity space 16, the general portion forming side 16a of the molded product and the surface covering skin portion 1b are formed.
It can be surely partitioned from the lining portion forming side 16b. Therefore, even if the molten resin is individually injected into each part, it can be prevented from wrapping around to the other side, and in particular, it can be prevented from wrapping around from the general part forming side 16a of the molded product to the lining part forming side 16b of the outer skin 1b The decorative property of the outer skin 1b is not impaired.

After partitioning the cavity space 16, first,
As shown in FIG. 9, the molten resin E ₁ is fed from the resin injection gates 15a and 15b of the core mold 10 to the general portion forming side 16a of the molded product.
And is filled up to the groove bottom of the receiving groove 13 as shown in FIG. As a result, the general portion 2a of the molded product 2 is formed, and the flange portion 3a for embedding and holding the skin end portion 1a is formed so as to project longer than the skin end portion 1a.

Next, as shown in FIGS. 11 and 12, the slide block 12 is retracted to the groove bottom of the receiving groove 13,
As shown in FIG. 13, the molten resin E ₂ is injected from the resin injection gate 15c of the core mold 10 which is opened on the back surface side of the outer cover 1b to the lining forming side 16b of the outer cover 1b to leave the slide block 12 empty. Fill up to space.

By injection-filling the molten resin E ₂ , as shown in FIG.
As shown by 4, the backing portion 2b of the outer cover 1b is formed, and the flange portion 3b facing the flange 3a for embedding and holding the outer end 1a of the outer cover is formed by protruding from the backing 2b of the outer cover 1b. General part 2b of molded product
Is integrally joined to the lining portion 2a of the exterior skin portion 2b and the flange portion to form an integrated vehicle door lining. Finally, the cavity mold 11 may be opened, and the resin mold product may be removed from the core mold 11 with an eject pin.

In the automobile lining molded as described above, as shown in FIG. 15, the general portion 2a of the molded product and the lining portion 2b of the outer cover 1b are formed by the receiving groove 13 deeper than the length of the outer end 1a of the outer cover. Flange portions 3a, 3b
Since they are integrally joined with each other, even if the molten resins are individually injected, a resin molded product 2 that is robust as a whole can be obtained.

Further, as shown in FIG. 16, the outer skin end portion 1a is connected to the flange portion 3 without generating wrinkles or the like on the outer skin portion 1b.
a and 3b can be surely embedded and held, and the protruding teeth 14
By shaping the V groove according to (1) on the front surface side, it is provided as a center pad having a good appearance in which the contour of the outer cover 1b is edged by the V groove.

In the above embodiment, the cavity mold 11 is used.
As shown in FIG. 17, as shown in FIG.
It is possible to use a core type structure having an outer mold part 11a and a middle mold part 11b. In the cavity mold 11 having the core mold structure, the middle mold part 11b may be retracted from the outer mold part 11a and moved toward the core mold 10 in the initial stage.

Using the cavity mold 11 having the core mold-containing structure, the skin material 1 is assembled on the mold surface of the core mold 10 in the same manner as described above, and first, as shown in FIG.
0 is clamped by the outer mold part 11a. At this stage, the outer cover skin portion 1b is not pushed in. Therefore, if the outer cover skin portion 1b is loose, the outer mold part 11a connects the outer skin end portion 1a to the half tooth 14b of the protruding tooth 14 as shown in FIG. By squeezing and supporting in the groove of the receiving groove 13 with, it is possible to absorb the looseness of the outer skin 1b.

Next, as shown in FIG. 20, the middle-sized portion 1 is formed until the respective halves 14b, 14c of the protruding teeth 14 are aligned with each other.
Clamp 1b. After that, the slide block 12 is advanced toward the mold surface of the middle mold portion 11b, and the winding base of the skin terminal portion 1a is moved to the slide block 1 as shown in FIG.
By sandwiching the tip end surface of No. 2 and the other half tooth 14c of the protruding tooth 14, the outer covering skin portion 1b can be tensioned and supported along the mold surface of the middle mold portion 11b. Thereafter, the same steps as described above are carried out to obtain a skin part-attached resin molded product.

In the drawing, since the fabric having a restoring force is used as the skin material, the assembling side 16b of the exterior skin portion 1b is not shown to maintain the cavity space. Further, since the core mold 10 and the cavity mold 11 are illustrated with their respective mold surfaces simplified, the cross-sectional shape of the resin molded product is different, and the automobile door lining has the cross-sectional shape as shown in FIG.

In the above-mentioned embodiment, the automobile door lining is explained as a resin molded product, but in addition to this, car interior parts such as pillars, garnishes, instrument panels, lids, etc. are resin-molded, and a cover material is used for covering. It can be applied to the production of various resin molded products forming a part. In addition, although the description has been given for the case where the entire outer peripheral edge of the skin material is wound and fastened, the shape of the slide block, the receiving groove and the protruding teeth,
By changing the structure, the invention can be applied to the case where the outer peripheral edge portion is embedded and fixed except for a part of the outer peripheral edge.

[0045]

As described above, according to the method for manufacturing a partially skin-attached resin molded product according to the first aspect of the present invention, the skin end portion is wound from the tip end surface of the slide block into the groove of the receiving groove to form the skin. After assembling the material to the mold surface of the core mold and clamping this core mold with the cavity mold, the slide block of the core mold is advanced toward the mold surface of the cavity mold, and the winding base of the skin terminal part is moved to the slide block. It is sandwiched between the tip surface and cavity type protruding teeth, and the cavity space is divided by the protruding teeth into the general part forming side of the molded product and the lining part forming side of the skin terminal, and first the molten resin is molded into the general part of the molded product. Filling the groove bottom of the receiving groove by injecting to the forming side, forming a general part of the molded product with a flange part for embedding and holding the skin end part,
Next, the slide block is retracted to the groove bottom of the receiving groove, the molten resin is injected from the back side of the outer cover skin part to fill the empty space of the slide block, and the flange part facing the flange part for embedding and holding the outer skin end part. Forming a lining part of the outer cover skin part, and integrally bonding the general part of the molded product and the lining part of the outer cover skin part to each other to form a resin molded product in which the outer cover skin part is partially adhered. By forming it, the decorativeness can be kept good and the end of the skin material can be surely embedded and held, and the resin molded product can be formed integrally with the skin material, and the resin molded product as a whole can be formed to be robust.

According to the method for manufacturing a partially skin-covered resin molded product according to claim 2 of the present invention, a cavity mold provided with protruding teeth having a chevron shape with arcuate inclined surfaces descending from a sharp tooth tip to both surfaces. By shaping the embedded holding portion of the end of the epidermis into a V-groove shape by using, the outer cover portion with a good appearance in which the contour is edged by the V groove can be formed.

According to the method for producing a partially skin-covered resin molded product according to claim 3 of the present invention, from the tips of the protruding teeth to the medium-sized portion,
Using a cavity mold that is divided into outer mold parts, first, the outer mold parts are clamped, and the skin end part is pushed into the groove of the receiving groove with one half tooth of the protruding teeth and then supported. The middle mold part is clamped until the halves are aligned with each other, the slide block is advanced toward the mold face of the middle mold part, and the winding base of the skin end part is attached to the tip surface of the slide block and the other half tooth of the protruding tooth. If there is slack in the outer skin by sandwiching it with, the outer mold part will push the outer skin end part into the groove of the receiving groove with one half tooth of the protruding tooth to support the slack in the outer skin. In addition to being able to do so, it is possible to support the outer skin part by tensioning it so that it fits along the mold surface of the middle mold part.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a mold structure of a molding die applied in a method for manufacturing a partially skin-covered resin molded product according to the present invention.

FIG. 2 is an explanatory view mainly showing a slide block, a receiving groove and protruding teeth in the molding die of FIG.

FIG. 3 is an explanatory view showing a step of assembling a skin material in the method for manufacturing a partially skin-covered resin molded product according to the present invention.

FIG. 4 is an explanatory view mainly showing an end of the skin material assembled in the process of FIG.

FIG. 5 is an explanatory view showing a mold clamping process of the mold following the process of FIG.

FIG. 6 is an explanatory view mainly showing the ends of the skin material that has been clamped in the process of FIG.

FIG. 7 is an explanatory diagram showing a step of advancing the slide block that follows the step of FIG. 5;

FIG. 8 is an explanatory view mainly showing a slide block advanced in the process of FIG.

FIG. 9 is an explanatory diagram showing an injection process of a molten resin for forming a general part, which follows the process of FIG.

10 is an explanatory view mainly showing a general part of a molded product made of the molten resin injected in the step of FIG. 9.

FIG. 11 is an explanatory diagram showing a slide block retracting step that follows the step of FIG. 9;

FIG. 12 is an explanatory view mainly showing the slide block retracted in the step of FIG.

13 is an explanatory diagram showing a step of injecting a backing material forming molten resin, which is subsequent to the step of FIG.

FIG. 14 is an explanatory view mainly showing a lining portion of a cover skin portion made of a molten resin injected in the process of FIG.

FIG. 15 is an explanatory view showing a cross section of a resin molded product obtained by the method for producing a partially skin-covered resin molded product according to the present invention.

16 is an explanatory view mainly showing a flange portion for embedding and holding a skin end portion in the molded product of FIG.

FIG. 17 is an explanatory view showing a molding die including a cavity die different from that of FIG. 1.

FIG. 18 is an explanatory view showing a mold clamping process of the outer mold part in the molding mold of FIG. 17.

FIG. 19 is an explanatory view mainly showing the ends of the skin material clamped in the step of FIG.

20 is an explanatory diagram showing a mold clamping process for the middle mold part, which follows the process in FIG. 18. FIG.

FIG. 21 is an explanatory view mainly showing the ends of the skin material that has been clamped in the process of FIG. 20.

FIG. 22 is a sectional view showing an automobile door lining as a resin molded product according to a general example.

FIG. 23 is an explanatory view showing an automobile door lining as a resin molded product according to a general example.

FIG. 24 is an explanatory view partially showing a lining main body to which the method of attaching a wood grain attachment according to a conventional example is applied.

FIG. 25 is an explanatory view showing the grained structure of the skin material by the lining body of FIG. 24.

FIG. 26 is an explanatory diagram showing a defect of an example due to a grained structure of a skin material.

FIG. 27 is an explanatory diagram showing another problem caused by the grained structure of the skin material.

FIG. 28 is an explanatory diagram showing a method of manufacturing a resin-molded product integrated with a skin according to a conventional example.

29 is an explanatory diagram showing a defect in the resin-in-skin-integrated-molded product of FIG. 28. FIG.

FIG. 30 is an explanatory diagram showing, in an initial step, a method for manufacturing a resin product with integral skin according to the prior art.

31 is an explanatory diagram showing a mold clamping process of the cavity mold following the process of FIG. 30. FIG.

FIG. 32 is an explanatory diagram showing a slide block retracting step that follows the step of FIG. 31;

FIG. 33 is an explanatory diagram showing a molten resin injection step following the step of FIG. 32.

FIG. 34 is an explanatory view showing a final step of the method for manufacturing the resin-in-skin integrated product following the step of FIG. 33.

FIG. 35 is an explanatory view showing a method of manufacturing a resin-molded product integrated with a skin according to a prior art in a suction step of a skin terminal.

FIG. 36 is an explanatory view showing a final step of the method for manufacturing the resin-in-skin integrated product subsequent to the step of FIG. 35.

[Explanation of symbols]

1 skin material 1a skin end portion 1b skin mounted skin portion 2 resin molded product 2a general part 2b of molded product 2b of skin mounted skin portion 3a, 3b flange portion 10 core type 11 cavity type 11a cavity type outer mold portion 11b cavity type Medium-sized portion 12 Slide block 13 Receiving groove 14 Groove tooth 14a Groove tooth tips 14b and 14c Ridge tooth inclined surfaces 15a to 15c Resin injection gate 16 Cavity space 16a General part forming side 16b of molded product Lining part formation side E ₁ , E ₂ molten resin

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 4F202 AD08 AD16 AH26 CA11 CB13                       CK25 CK52 CK57 CL42 CQ01                       CQ05                 4F206 AD08 AG03 AH26 JA07 JB13                       JL02 JM02 JM04 JN12 JN33                       JQ81

Claims (3)

[Claims] 1. A skin end portion is embedded inside, a main surface excluding the skin end portion is partially adhered as a cover skin portion, and a resin molding is integrally molded with a skin material cut into a predetermined area shape. In the method of manufacturing a partially skin-attached resin molded product, a slide block that advances or retreats toward the mold surface of the cavity mold is provided in the mold, and a contour shape that substantially corresponds to the cut shape of the skin material is provided. The core die with a receiving groove on the die surface that is deeper than the length of the end where the skin material is rolled up, and the groove surface is defined by the side surface of the slide block from the inside of the end where the skin material is rolled up. Using a cavity mold with protruding teeth that are aligned with the receiving groove of the block, wrap the skin end part from the tip surface of the slide block into the groove of the receiving groove, and assemble the skin material onto the mold surface of the core mold. Core type After the mold is clamped with the cavity mold, the core-type slide block advances toward the mold surface of the cavity mold, and the winding base of the skin end part is sandwiched by the tip surface of the slide block and the protruding teeth of the cavity mold to form the cavity space. Is divided into the general part forming side of the molded product and the lining part forming side of the skin terminal integrated with the protruding teeth, and first, the molten resin is injected to the general part forming side of the molded product to fill the groove bottom of the receiving groove. Then, form the general part of the molded product with the flange part that embeds and holds the outer skin end part, then retracts to the groove bottom of the slide block receiving groove and injects the molten resin from the back side of the outer skin part. Filling up to the empty space of the slide block, forming a lining part of the outer cover skin part with a flange part facing the flange part for embedding and holding the outer skin end part, and forming the general part of the molded product and the lining part of the outer cover skin part. Partial epidermis stuck method for producing a resin molded article is characterized in that so as to form a resin molded article partially bonding the mounting surface skin portion by bonding together at flange portions mutually. 2. A resin mold product is formed, in which a cavity mold is provided in which a protruding tooth having a mountain shape is provided by an arcuate inclined surface descending from a pointed tooth tip to both sides, and a surface skin portion is edged by a V groove. The method for producing a partially skin-attached resin molded article according to claim 2, wherein 3. A mold of a core type in which a skin type end portion is wound from a tip end surface of a slide block into a groove of a receiving groove by using a cavity type in which a tip of a protruding tooth is divided into a middle mold part and an outer mold part. After assembling to the surface, first, the outer mold part is clamped and the skin end part is pushed into the groove of the receiving groove with one half of the protruding teeth and then supported, and then each half of the protruding teeth is aligned with each other. While clamping the middle mold part until it is located, move the slide block forward toward the mold face of the middle mold part, and sandwich the winding base of the skin end part between the tip surface of the slide block and the other half of the protruding teeth. The method for producing a partially skin-attached resin molded article according to claim 1 or 2, characterized in that.