JPH10180814A - Mold assembly for partial skin material sticking molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a partial skin material sticking molding of high quality at a low cost by a simple structure with which a peripheral edge of a skin material is not exposed on the surface of the molding and the boundary of the skin material is made to be distinct. SOLUTION: In a mold assembly, a partition plate 6 which surrounds the entire periphery of a skin material 15 in a state the peripheral edge of the skin material 15 is bent toward a stationary mold 1 and can freely come in and out between a movable half 2 and the stationary mold 1, and an actuator 2c for driving the partition plate 6 to go in and out are provided in the movable half 2. At a position opposite to the partition plate 6 in the stationary mold 1, a groove 1d having a width wider than the width of the tip of the partition plate 6 and with which the tip of the partition plate 6 can be engaged at the time of clamping is formed. Molten resin passages 1b and 1c for pouring a molten resin into an inside cavity 16a and an outside cavity 16b of the partition plate 6 respectively are formed in the stationary mold 1. Opening/closing mechanisms 4 and 5 for opening/closing the respective molten resin passages 1b and 1c are provided in the stationary mold 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface material such as cloth or leather for practical or decorative purposes on a part of the surface of a molded product by using a mold attached to a mold clamping device of a molding machine such as an injection molding machine. The present invention relates to a partial skin material pasting die apparatus for forming a partial skin material pasting molded product.

[0002]

2. Description of the Related Art Parts made of resin are often used for interior parts such as vehicles, but in order to improve the feel, a partial skin material such as cloth or leather is adhered to a part of the surface. Adhesive molded products are also used. Such a partial skin material-attached molded product is usually formed by attaching a skin material to a molded product after molding using an adhesive. However, in order to eliminate the use of an adhesive and improve work efficiency, in the molding process, a skin material is previously attached to a predetermined surface of a mold, and a molten resin is injected and filled into the back surface of the skin material to form a skin. It is desired that the material is pasted and molded at the same time to form a molded product with a partial skin material attached, and several methods have been proposed in the past.

For example, in Japanese Patent Application Laid-Open No. Sho 60-212312, as a method of integrally forming a skin material by partially attaching the same, two sets of dies are provided, the skin material is attached to the first mold, and molten resin is injected. A technique is disclosed in which an intermediate molded product is prepared by transferring the intermediate molded product to a second mold, and the molten resin is again injected to form a final molded product. However, such a technique requires two sets of dies and also requires transfer of the intermediate molded product to another die, which complicates the molding process of the partially skinned product.

Therefore, in Japanese Patent Application Laid-Open No. 7-195431, the movable mold is divided, the skin is attached to the middle mold, injection molding is partially performed, and then the middle mold is slightly opened to perform secondary injection. A technique for forming a molded product using a single set of dies has been disclosed. An outline of this technique will be described with reference to FIG. In FIG. 10, reference numeral 30 denotes a movable mold attached to a movable mold board;
Reference numeral 0 denotes a core mold that can be relatively moved with respect to the mold 30 by pressurizing means built in the movable mold 30. Reference numeral 10 denotes a fixed die, on which a plurality of molten resin gates 11a-1 and 11a-2 are formed.

When a molded article is integrally formed with the skin material H using these molds 10, 20, 30 first, the skin material H is first formed.
Is moved to a predetermined position to approach the fixed die 10, and the core die 20 and the fixed die 10 are moved from the gate 11 a-1 for the core die 20 of the fixed die 10. The molding is performed by filling a molten resin into the cavity formed between the above.

Next, while maintaining the position of the core mold 20, the movable mold 30 is closed, and the movable mold 30 is inserted into a cavity formed between the movable mold 30 and the fixed mold 10.
Molding is performed by injecting molten resin from the gate 11a-2 for use. The gate 11a-2 for the movable mold 30 is opened with a later timing than the gate 11a-1 for the core mold 20, and the resin filled in the core mold 20 is filled with the groove 1a.
When the movable mold 30 is stopped in an unsolidified state in a gap formed between the metal mold 2 and the protrusion 21 of the core mold 20,
The molten resin injected from the gate 11a-2 fills the inside of the mold cavity, comes into contact with the resin previously injected into the core mold 20 side, and is joined to be integrated.

FIG. 11 is a partial cross-sectional view showing the state of the periphery of the skin material H when the partial skin material is pasted and formed by the molds 10 and 20 described above with reference to FIG.

[0008]

However, the above-mentioned conventional skin material integral molding technique (Japanese Patent Laid-Open No. 7-195431).
No.), when the molten resin is injected into the mold cavity, as shown in FIG. 11, the peripheral portion of the skin material H is pushed by the molten resin and is exposed on the surface of an unnecessary portion. The boundary with the non-skin-applied part is not clear, and the end of the shape varies, so that a high quality molded product cannot be obtained.
In addition, the movable mold has two parts (reference numerals 20 and 30 in FIG. 10).
), There is also a problem that the mold apparatus has a complicated structure and is expensive.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a high quality partial skin material sticking without exposing a peripheral portion of the skin material to the surface of the molded product so that the boundary of the skin material is sharp. Molded products can be manufactured with a simple structure and at low cost.
It is an object of the present invention to provide a mold apparatus for pasting and forming a partial skin material.

[0010]

In order to achieve the above object, a mold apparatus for pasting and forming a partial skin material according to the present invention (Claim 1) is provided with a fixed mold and an opposed face to the fixed mold. And a movable mold that is closed and moved with respect to the fixed mold. The fixed mold and the movable mold are clamped with a skin material attached to a surface of the movable mold facing the fixed mold. To form a part-skin material-adhered molded product in which the skin material is stuck to a part of the surface, and the periphery of the skin material attached to the movable mold is bent toward the fixed mold side. A partition plate that surrounds the entire periphery of the skin material in a state and that can move in and out between the movable die and the fixed die, and an actuator that drives the partition plate in and out of the movable die. Has a width wider than the leading end width of the partition plate and A first molten resin passage for injecting the molten resin into a cavity inside the partition plate and a second molten resin passage for injecting the molten resin into a cavity outside the partition plate, while forming a groove into which the tip of the partition plate can fit. And a first and second opening / closing mechanism for opening and closing the first molten resin passage and the second molten resin passage, respectively, in the fixed mold. And

In the above-mentioned mold apparatus for pasting partial skin material, the partition plate is protruded toward the fixed mold side by the actuator at the time of mold clamping, and the tip of the partition plate is brought into contact with the bottom of the groove. A cavity of a skin material pasting shape portion to which the skin material is pasted is defined, and only the first molten resin passage is opened by the first opening / closing mechanism to inject the molten resin into the cavity inside the partition plate to form the skin material pasting shape. After forming the part, the partition plate is pulled into the movable mold side by a predetermined amount by the actuator, and only the second molten resin passage is opened by the second opening / closing mechanism to inject the molten resin into the cavity outside the partition plate. Then, the outer portion of the partition plate may be formed integrally with the skin material pasting portion (claim 2).

Further, in the mold apparatus for pasting partial skin material according to claim 1, the partition plate is moved by the actuator with the movable mold being slightly opened from the mold fully closed position with respect to the fixed mold. By projecting to the fixed mold side and making the tip of the partition plate abut against the bottom of the groove, the cavity of the skin material sticking part where the skin material is stuck is defined, and only the first molten resin passage is opened by the first opening / closing mechanism. Open, inject a predetermined amount of molten resin into the cavity inside the partition plate, move the movable mold to the fixed mold side, close the mold, compression-mold only the skin material application part, and partition by the actuator The plate is pulled into the movable mold side by a predetermined amount, and the second
Only the second molten resin passage is opened by the opening / closing mechanism described above to inject the molten resin into the cavity outside the partition plate, and the portion outside the partition plate may be integrally formed with the skin material pasting portion (claim). Item 3).

Further, in the mold apparatus for pasting partial skin material according to claim 1, the partition plate is moved by the actuator while the movable mold is slightly opened from the fixed mold with respect to the fixed mold. By projecting to the fixed mold side and making the tip of the partition plate abut against the bottom of the groove, the cavity of the skin material sticking part where the skin material is stuck is defined, and only the first molten resin passage is opened by the first opening / closing mechanism. Open, inject a predetermined amount of molten resin into the cavity inside the partition plate, move the movable mold to the fixed mold side, close the mold, compression-mold only the skin material application part, and partition by the actuator The plate is pulled into the movable mold side by a predetermined amount, and the movable mold is again slightly opened with respect to the fixed mold.
The opening and closing mechanism opens only the second molten resin passage, injects a predetermined amount of molten resin into the cavity outside the partition plate, and moves the movable mold to the fixed mold again to perform mold clamping. The outer portion of the partition plate may be compression-molded integrally with the skin material pasting portion (claim 4).

With the above construction, in the mold apparatus for pasting and forming a partial skin material of the present invention (claims 1 to 4), the peripheral portion of the skin material attached to the portion surrounded by the partition plate is supported by the partition plate. It is bent to the fixed mold side, the mold is clamped, the molding is performed by injecting the molten resin for the first time, and then the partition plate is drawn into the movable mold side. Injection of the molten resin will be involved in the thickness of the molded product, it will not be exposed on the surface of the molded product,
The boundary between the skin material and the non-skin-applied portion becomes clear.

[0015] On the other hand, a mold device for pasting and forming a partial skin material according to the present invention (claim 5) is a movable mold which is mounted opposite to the fixed mold and which moves by clamping with respect to the fixed mold. The fixed mold and the movable mold are clamped with the skin material attached to the surface facing the fixed mold on the movable mold side, so that the skin material becomes part of the surface. A partition convex part which surrounds the entire periphery of the skin material in a state where the peripheral part of the skin material attached to the movable mold is bent toward the fixed mold side, for molding the pasted partial skin material pasted molded product. Is formed in a movable mold, and at a position opposed to the partition convex portion in the fixed mold, a slide having a width larger than the distal end width of the partition convex portion and capable of abutting on the distal end of the partition convex portion during mold clamping. The member is slidable in the moving direction of the movable mold, and the sliding member is A first molten resin passage for injecting the molten resin into the cavity inside the partitioning convex portion, and a second molten resin passage for injecting the molten resin into the cavity outside the partitioning convex portion. Are formed in a stationary mold, and the first molten resin passage and the second
And a first and a second opening and closing mechanism for respectively opening and closing the molten resin passage.

In the above-mentioned mold apparatus for pasting partial skin material, the sliding member is slid toward the movable mold side by the actuator at the time of mold clamping and brought into contact with the tip of the partitioning convex portion. The cavity of the skin material pasting portion where the material is to be pasted is defined, and only the first molten resin passage is opened by the first opening / closing mechanism to inject the molten resin into the cavity inside the partitioning convex portion to form the skin material pasting shape. After molding the portion, the sliding member is pulled into the fixed mold side by a predetermined amount by the actuator, and only the second molten resin passage is opened by the second opening / closing mechanism to allow the molten resin to enter the cavity outside the partition convex portion. And the outer portion of the partition convex portion may be integrally formed with the skin material pasting portion (claim 6).

In the above-mentioned mold apparatus for pasting a partial skin material, the sliding member is moved by the actuator while the movable mold is slightly opened from the fixed mold with respect to the fixed mold. Is slid to the movable mold side and brought into contact with the tip of the partitioning convex portion to define a cavity of the skin material application portion where the skin material is applied, and only the first molten resin passage is opened by the first opening / closing mechanism. Then, a predetermined amount of molten resin is injected into the cavity inside the partitioning convex portion, the movable mold is moved to the fixed mold side, the mold is clamped, only the skin material-attached portion is compression-molded, and then sliding is performed by the actuator. The moving member is pulled into the fixed mold side by a predetermined amount, and only the second molten resin passage is opened by the second opening / closing mechanism to inject the molten resin into the cavity outside the partition convex portion, and the portion outside the partition convex portion is formed. The skin material pasted type Moiety and may be integrally molded (claim 7).

Further, in the mold apparatus for pasting partial skin material according to claim 5, the sliding member is moved by the actuator while the movable mold is slightly opened from the mold fully closed position with respect to the fixed mold. Is slid to the movable mold side and brought into contact with the tip of the partitioning convex portion to define a cavity of the skin material application portion where the skin material is applied, and only the first molten resin passage is opened by the first opening / closing mechanism. Then, a predetermined amount of molten resin is injected into the cavity inside the partitioning convex portion, the movable mold is moved to the fixed mold side, the mold is clamped, only the skin material-attached portion is compression-molded, and then sliding is performed by the actuator. While pulling the moving member into the fixed mold side by a predetermined amount,
Again, the movable mold is slightly opened with respect to the fixed mold, the second opening / closing mechanism opens only the second molten resin passage, and a predetermined amount of molten resin is injected into the cavity outside the partitioning convex portion,
Again, the movable mold may be moved to the fixed mold side to perform mold clamping, and the portion outside the partition convex portion may be compression-molded integrally with the skin material pasting portion (claim 8).

With the above configuration, in the mold apparatus for pasting and forming the partial skin material of the present invention (claims 5 to 8), the peripheral edge of the skin material attached to the portion surrounded by the partition convex portion is formed by the partition convex portion. It is supported by and is bent to the fixed mold side, and after the mold is closed and molded by injection of the first molten resin, the sliding member is drawn into the fixed mold side, so that the peripheral edge of the skin material is The second injection of the molten resin is involved in the thickness of the molded product, and is not exposed on the surface of the molded product, so that the boundary between the skin material and the non-skin-applied portion becomes clear.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. The mold device in the embodiment of the present invention is a mold attached to a mold clamping device of a molding machine such as an injection molding machine, a part of the surface of the molded product, pasting a skin material for practical or decorative purposes, It is for manufacturing a molded product with a partial skin material attached thereto, and after the work of attaching the skin material to the surface of the mold cavity, various functions and functions of a mold clamping device (not shown) provided in the mold, which will be described later. Is performed automatically.

(A) Description of First Embodiment FIGS. 1 to 3 show a mold device for pasting and forming a partial skin material according to a first embodiment of the present invention, and FIG. 2 is a front view showing a cavity surface of the movable mold (as viewed in the direction of arrow A in FIG. 1), and FIG. 3 is a front view showing a cavity surface of the fixed mold (as viewed in the direction of arrow B in FIG. 1). FIG.
(A) to (H) are schematic vertical cross-sectional views for explaining a molding process of a partially skin material-adhered molded product performed using the mold apparatus of the first embodiment, and FIG. 5 is a first embodiment. FIG. 12 is a partial cross-sectional view (a cross-sectional view corresponding to FIG. 11) showing a state of a skin material peripheral portion of a partial skin material-adhered molded product formed by the mold apparatus of the embodiment.

As shown in FIG. 1, the mold apparatus according to the first embodiment includes a fixed mold 1 and a movable mold which is installed to face the fixed mold 1 and moves by clamping with respect to the fixed mold 1. The fixed mold 1 and the movable mold 2 are clamped in a state where the skin material 15 is attached to a surface (cavity surface 2A) of the movable mold 2 facing the fixed mold 1 on the movable mold 2 side. Do
This is for molding a partial skin material stuck molded product in which the skin material 15 is stuck to a part of the surface.

As shown in FIGS. 1 and 2, the movable mold 2 is provided with a slit-shaped groove 2a having a constant width and opening on the cavity surface 2A side. 8 that are cut endlessly along the shape of the portion and communicate with the slit-shaped groove 2a.
The cylindrical holes 2b are formed at substantially equal intervals along the slit-shaped grooves 2a so as to open on the side opposite to the cavity surface 2A. These cylindrical holes 2b are formed respectively corresponding to eight portions 6a to 6h forming a partition plate 6 described later.

As shown in FIG. 2, eight divided partition plates 6 (6 a to 6 h) are provided in the slit-shaped groove 2 a to fix the peripheral edge of the skin material 15 attached to the movable mold 2 to a fixed metal. It is inserted so as to surround the entire periphery of the skin material 15 in a state of being bent toward the mold 1 and to be able to freely enter and exit between the movable mold 2 and the fixed mold 1. These eight partition plates 6a to 6h
Are pinned by pins 17 to one end of a support rod 9 fitted into the cylindrical hole 2b, and the other end of each support rod 9 is disposed on the opposite side to the cavity surface 2A. The partition plate 7 is fixed to the support member 7.

At this time, as described above, the partition plate 6 is
The partition plate 6 (6a to 6h) is divided into a plurality of portions 6a to 6h, and each of the portions 6a to 6h is pinned to each of the support rods 9 fixed to the partition plate support member 7. 2a, the partition plate 6 is held so that the position in the thickness direction and the width direction can be flexibly used, and the slit groove 2a of the movable mold 2 and the partition plate 6 due to processing errors and thermal distortion are generated. It is possible to prevent the occurrence of instability between them.

In the movable mold 2, a partition plate 6 (6
a to 6h) are formed with a hydraulic cylinder (actuator) 2c for driving in and out, and a partition plate supporting member 7 is attached to a piston 2d sliding in the hydraulic cylinder 2c by a rod 8
Are connected via Accordingly, by supplying the pressure oil to the oil chambers before and after the piston 2d, the partition plate 6 (6a to 6a) is supplied.
6h) is guided in the slit-shaped groove 2a via the rod 8, the partition plate support member 7 and the respective support rods 9 in the front-rear direction (the left-right direction in FIG. 1), that is, into the cavity between the molds 1 and 2. It is designed to be driven in and out. Partition plate 6
Can be stopped at an appropriate position at any time by adjusting the supply of pressure oil to the hydraulic cylinder 2c.

On the other hand, as shown in FIGS. 1 and 3, at a position facing the partition plate 6 on the cavity surface 1A of the fixed mold 1, a groove 1d having a constant depth is provided with a partial skin to be attached to the molded product. It is formed endless according to the outer shape of the material 15. The groove 1d has a width wider than the leading end width of the partition plate 6, and the leading end of the partition plate 6 protruding from the cavity surface 2A of the movable mold 2 at the time of mold clamping fits into contact with the bottom surface. It has become.

Further, inside the fixed die 1, molten resin passages 1a, 1b, 1c are formed. Molten resin passage 1
a communicates with a molten resin inlet 1e formed on the surface of the fixed mold 1 opposite to the cavity surface 1A, and branches into two to form a first molten resin passage 1b and a second molten resin passage 1b. It is connected to the resin passage 1c through gate valves (first and second opening / closing mechanisms) 4 and 5, respectively.

The first molten resin passage 1b is for injecting the molten resin into the cavity 16a inside the partition plate 6, and the second molten resin passage 1c is for injecting the molten resin into the partition plate 6.
It is to be injected into the outer cavity 16b. The first and second molten resin passages 1b and 1c can be switched between open and closed states by being connected to and disconnected from the molten resin passage 1a by gate valves 4 and 5, respectively. Has become. Gate valve 4,
5 are respectively driven to open and close by a drive mechanism not shown.

The molten resin inlet 1e of the fixed mold 1 has an injection nozzle 3 (FIG. 1) for injecting the molten resin during operation.
(See the two-dot chain line). In FIG. 1, when the fixed mold 1 and the movable mold 2 are clamped, the partition plate 6 is protruded toward the fixed mold 1 so that the end of the partition plate 6 is formed in the groove 1.
The cavity 16a of the skin material sticking shape portion where the skin material 15 is stuck by contacting the bottom of d is defined, and the molten resin is injected into the cavity 16a [FIG.
(A state corresponding to (B)).

Next, FIG. 4A shows a molding process of a partial skin material-bonded molded product performed by using the mold device for partial skin material-bonding molding according to the first embodiment of the present invention configured as described above. ) To (H). Here, three types of molding methods using the mold apparatus of the present embodiment will be described. Regarding the first technique, FIG.
This will be described with reference to FIG.

First, as shown in FIG. 4A, the partition plate 6 of the movable mold 2 is projected from the cavity surface 2A, and the skin material 15 is attached to the mold cavity surface 2A surrounded by the partition plate 6. Attachment methods at this time include vacuum suction,
A temporary mounting method using a piercing pin, open / close tape, hook-and-loop fastener, or the like is used. Next, as shown in FIG. 4 (B), the movable mold 2 is moved to the fixed mold 1 side to perform mold clamping, and the partition plate 6 is protruded toward the fixed mold 1 by the hydraulic cylinder 2c to make the partition plate 6 move. Abuts against the bottom of the groove 1d to define the cavity 16a of the skin material pasting portion where the skin material 15 is pasted. Then, only the gate valve 4 is opened while the gate valve 5 is closed to communicate the molten resin passage 1a and the first molten resin passage 1b, and the molten resin is injected into the cavity 16a inside the partition plate 6 to cover the skin material. Injection molding of the pasted part.

Thereafter, as shown in FIG. 4C, at a timing before the resin in the cavity 16a is solidified, the gate valve 4 is closed, and the partition plate 6 is moved by the hydraulic cylinder 2c by a predetermined amount to move the movable mold 2 Side, and a space is provided between the tip of the partition plate 6 and the groove 1d of the fixed mold 1. Then, only the gate valve 5 is opened to communicate the molten resin passage 1a with the second molten resin passage 1c. The cavity 16b outside the partition plate 6
The injection molding is performed by injecting a molten resin into the inside. In this step, the molten resin injected later fills the space in which the partition plate 6 is retreated, and comes into contact with and assimilate the previously injected resin before solidification. Thereafter, the gate valve 5 is closed, the molten resin is cooled and solidified, and the molded product is released from the mold. As shown in FIG. 4 (D), a molded product with a partial skin material integrally molded with the partial skin material 15 is obtained. Will be obtained.

Regarding the second technique, FIG.
A description will be given with reference to (E), (F), (C), and (D) in order. First, as shown in FIG.
The partition plate 6 of the movable mold 2 is projected from the cavity surface 2A, and the skin material 15 is attached to the mold cavity surface 2A surrounded by the partition plate 6.

Next, as shown in FIG. 4 (E), the movable mold 2 is slightly opened from the fixed mold 1 from the mold fully closed position, that is, a position opened by a small dimension e. Stop at
While keeping this state, the partition plate 6 is projected to the fixed mold 2 side by the hydraulic cylinder 2c, and the end of the partition plate 6 is brought into contact with the bottom of the groove 1d, so that the skin material attaching portion to which the skin material 15 is attached. Of the cavity 16a. In this state, only the gate valve 4 is opened while the gate valve 5 is closed to communicate the molten resin passage 1a with the first molten resin passage 1b, and a predetermined amount of the molten resin is injected into the cavity 16a inside the partition plate 6. inject.

Then, as shown in FIG. 4 (F), after closing the gate valve 4 and closing the molten resin passage 1b, the movable mold 2 is closed.
Is moved in the direction indicated by the arrow (the mold clamping direction, the right direction in the figure) to compression-mold the molten resin in the cavity 16a to which the skin material 15 is attached, and at the same time, the skin material 15 is attached. Thereafter, the process proceeds to the step shown in FIG. 4C, and the hydraulic cylinder 2c pulls the partition plate 6 toward the movable mold 2 by a predetermined amount at a timing before the resin in the cavity 16a is solidified, as described above. After providing a space between the tip of the partition plate 6 and the groove 1d of the fixed mold 1, only the gate valve 5 is opened to communicate the molten resin passage 1a with the second molten resin passage 1c, The injection molding is performed by injecting the molten resin into the cavity 16b on the outside of the tube. In this step, the molten resin injected later fills the space in which the partition plate 6 is retreated, and comes into contact with and assimilate the previously injected resin before solidification. Thereafter, the gate valve 5 is closed, the molten resin is cooled and solidified, and the molded product is released.

As a result, even in the second method, FIG.
As a result, a partial skin material-adhered molded article integrally formed with the partial skin material 15 is obtained. Also, this second
In the method of the first embodiment, the cavity 1 in which the skin material 15 is attached is used.
Since the molten resin in 6a is compression-molded, stronger adhesion between the resin material and the skin material 15 can be obtained. Regarding the third method, FIGS. 4 (A), (E), (F), (G),
This will be described with reference to (H) and (D) in order.

First, the states shown in FIGS. 4A to 4F are the same as those in the above-described second method, and thus the description thereof will be omitted. First, the cavity 16a of the skin material pasting shape portion
From the state shown in FIG. 4 (F) in which only the pressure cylinder was compression-molded and semi-solidified, next, as shown in FIG.
To pull the partition plate 6 toward the movable mold 2 by a predetermined amount, open the movable mold 2 again by the dimension e relative to the fixed mold 1 and open only the gate valve 5 to open the molten resin passage 1.
a and the second molten resin passage 1c are communicated with each other, and a predetermined amount of molten resin is injected into the cavity 16b outside the partition plate 6.

Thereafter, as shown in FIG. 4H, the gate valve 5 is closed to close the second molten resin passage 1c.
The movable mold 2 is moved to the fixed mold 1 side and moved to the mold clamping side, and the molten resin in the cavity 16b outside the partition plate 6 is compression-molded. Thereby, as shown in FIG. 4D, a partial skin material-adhered molded product integrally formed with the partial skin material 15 is obtained. In this third method, the skin material 15
The compression molding of the molten resin in the cavity 16a to which the resin material is attached and the cavity 16b other than the above can provide a stronger bond between the resin material and the skin material 15, and a molded product with less distortion can be obtained. .

FIG. 5 shows the state of the peripheral edge of the skin material of the partial skin material-adhered molded product formed by each of the above-described methods. Molded products using conventional core molds (with fixed partition plates)
As shown in FIG. 11, since the periphery of the skin material is exposed on the surface of the molded product beyond the partition plate portion (convex portion 21), the trimming shape of the skin material, mounting error, displacement during the molding operation, etc. The value of the product may be reduced, and the yield of the product may be reduced.

On the other hand, according to this embodiment, before the second-stage injection molding, the partition plate 6 is drawn in, so that the molten resin injected the second time is a skin material. 1
5 is rolled up, and as shown in FIG.
Is not exposed on the surface of the molded product, and the boundary between the skin material 15 and the non-skin material application portion becomes clear. Therefore,
It is possible to manufacture a high quality partial skin material pasted molded product with a simple structure and at low cost.

Also, as long as the mounting position of the skin material 15 does not shift so much, the appearance of the skin material 15 applied to the molded product is improved, so that the partial skin material application can be performed without strict cutting accuracy of the cloths. The quality of molded products is greatly improved. further,
By opening and closing the molten resin passages 1b and 1c using the gate valves 4 and 5, respectively, one molding machine and one set of dies 1 and 2 can be used without using a plurality of dies and a plurality of molding machines.
Also, there is an advantage that the partial skin material pasting molding and the compression molding can be performed very easily by using the above.

(B) Description of the Second Embodiment FIGS. 6 to 9 show a mold device for pasting and forming a partial skin material according to a second embodiment of the present invention. FIG. 7 is a front view showing the cavity surface of the movable mold (viewed in the direction of arrow C in FIG. 6), FIG. 8 is a front view showing the cavity surface of the fixed mold (viewed in the direction of arrow D in FIG. 6), and FIG. E- of FIG.
It is E sectional view taken on the arrow E.

As shown in FIG. 6, the mold apparatus according to the second embodiment also includes a fixed mold 27, and a movable mold which is installed to face the fixed mold 27 and moves by clamping with respect to the fixed mold 27. Type 2
The surface material 1 is provided on the surface (cavity surface 26A) of the movable mold 26 facing the fixed mold 27 on the movable mold 26 side.
The fixed mold 27 and the movable mold 26 are clamped in a state in which the surface material 5 is attached to form a partial skin material bonded product in which the skin material 15 is bonded to a part of the surface.

As shown in FIGS. 6 and 7, the movable mold 26 is formed with a partition convex portion 26a having a constant height. The partitioning projection 26a is formed so as to surround the entire periphery of the skin material 15 in a state where the peripheral edge of the skin material 15 attached to the cavity 26A of the movable mold 26 is bent toward the fixed mold 27 side. As shown in FIGS. 6 and 8, in the fixed mold 27, at a position facing the partitioning convex portion 26 a, the partitioning convex portion 26 a has a width larger than the tip width of the partitioning convex portion 26 a and the partitioning convex portion 26 a at the time of mold clamping. The sliding member 34 (34a to 34h) which can abut the tip of the movable mold 2
6 is provided so as to be slidable in the moving direction (mold clamping direction).

That is, a slit-like groove 27a having a fixed width (substantially the width of the sliding member 34) opened on the side of the cavity surface 27A.
Are cut endlessly along the shape of the peripheral portion of the skin material 15 attached to the movable mold 26, and eight cylindrical holes 27b communicating with the slit-like grooves 27a are formed in the cavity. It is formed at substantially equal intervals so as to open on the opposite side to the surface 27A and along the slit-like groove 27a. These cylindrical holes 27b are formed respectively corresponding to eight portions 34a to 34h forming a sliding member 34 described later.

As shown in FIG. 8, the slit-shaped groove 27a has eight divided sliding members 34 (34a to 34h).
Are slidably inserted in the moving direction of the movable mold 26. When the sliding member 34 moves (moves forward) to the movable mold 26 side, it comes into contact with the tip of the partition convex portion 26a of the movable mold 26 (see the solid line in FIG. 6). Each of the portions 34a to 34h forming the sliding member 34 has a cylindrical hole 27.
b, and is fixed to one end of a support rod 35 fitted into the support member 35, and the other end of each support rod 35 is connected to a slide member support plate 32 disposed on the opposite side to the cavity surface 27A. ing. At this time, as shown in FIG.
A ring-shaped groove 35a is formed on the other end of the sliding member support plate 32. By engaging the ring-shaped groove 35a with a notch hole 32a formed in the peripheral portion of the sliding member support plate 32, each support rod is formed. 35 is supported by the sliding member support plate 32 while restricting the mold clamping direction.

In the second embodiment, the fixed mold 2
The sliding member support plate 7 is fixedly supported by the fixed mold support member 25 and is provided in the space formed between the fixed mold 27 and the fixed mold support member 25. 32
Are provided so as to be movable in the mold clamping direction. And
The fixed mold supporting member 25 includes a sliding member 34 (34a to 34a).
4h) is formed with a hydraulic cylinder (actuator) 25d for sliding driving, and a sliding member support plate 32 is connected via a rod 33 to a piston 25e sliding in the hydraulic cylinder 25d. Therefore, the piston 25e
By supplying pressure oil to the front and rear oil chambers, the sliding member 34
(34a to 34h) are the rod 33 and the sliding member support plate 3.
While being guided by the slit-like groove 27a through the support rods 2 and the respective support rods 35, the slide drive is performed in the front-rear direction (the left-right direction in FIG. 6). The slide member 34 can be stopped at an appropriate position at any time by adjusting the supply of the pressure oil to the hydraulic cylinder 25d. 6, a state where the sliding member 34 is updated and driven by the hydraulic cylinder 25d and the tip of the sliding member 34 is separated from the partitioning convex portion 26a of the movable mold 26 is indicated by a two-dot chain line.

On the other hand, as shown in FIG. 6, FIG. 8 and FIG.
5a, 25b and 25c are formed. The molten resin passage 25a communicates with a molten resin inlet 25f formed on the surface of the stationary mold supporting member 25 opposite to the stationary mold 27, and includes a first molten resin passage 25b and a second molten resin 25b. The passage 25c is communicatively connected via gate valves (first and second opening / closing mechanisms) 4 and 5, respectively.

The first molten resin passage 25b of the fixed mold support member 25 is connected to a first molten resin passage 27d formed inside the fixed mold 27, and the first molten resin passage 25b and the first molten resin passage 25b are connected to each other. By 27d, the molten resin is injected into the cavity 36a inside the partitioning convex portion 26a. Similarly, the second molten resin passage 25c of the fixed mold support member 25 is connected to a second molten resin passage 27c formed inside the fixed mold 27, and is connected to the second molten resin passage 25c by the molten resin passages 25c and 27c. The molten resin is injected into the cavity 36b outside the partitioning projection 26a. The first molten resin passages 25b and 27d and the second molten resin passages 25c and 25
7c can be switched between open and closed states by being connected to and disconnected from the molten resin passage 25a by the gate valves 4 and 5, respectively. Gate valves 4 and 5
Each is driven to open and close by a drive mechanism not shown.

An injection nozzle 3 (see a two-dot chain line in FIG. 6) for injecting the molten resin is pressed into the molten resin inlet 25f of the fixed mold supporting member 25 during operation. FIG.
In the above, at the time of clamping the fixed mold 27 and the movable mold 26, the sliding member 34 is brought into contact with the partitioning convex portion 26a to define the cavity 36a of the skin material pasting portion where the skin material 15 is pasted. The state where the molten resin is injected into the cavity 36a is shown.

Even if the mold device for pasting and forming a partial skin material according to the second embodiment of the present invention configured as described above is used, the same procedure as the three molding methods described above in the first embodiment can be used. Partial skin material pasting molding can be performed. The difference between the first embodiment and the second embodiment is that, in the mold clamping / molten resin injection step, when partitioning around the partial skin material application portion, the partition plate 6 is driven in and out in the first embodiment. On the other hand, in the second embodiment, the sliding member 34
Is slidably driven, and the other steps are performed in substantially the same manner as the steps shown in FIGS.

That is, in the first method, first, the mold cavity surface 2 surrounded by the partition convex portion 26a of the movable mold 26 is formed.
The skin material 15 is attached to 6A (corresponding to the step shown in FIG. 4A). As a mounting method at this time, a temporary mounting method using vacuum suction, a piercing pin, an opening / closing tape, a hook-and-loop fastener, or the like is used. Then, the movable mold 26 is fixed to the fixed mold 2.
Then, the sliding member 34 is slid toward the movable mold 26 by the hydraulic cylinder 25d and brought into contact with the tip of the partitioning convex portion 26a, so that the skin material 15 is stuck. The cavity 36a of the shape portion is defined. Then, with the gate valve 5 closed and only the gate valve 4 opened, the molten resin passage 25a and the first molten resin passage 25 are opened.
b and 27d, and a molten resin is injected into the cavity 36a inside the partitioning convex portion 26a to injection-mold the skin material pasting portion (corresponding to the step shown in FIG. 4B).

Thereafter, at a timing before the resin in the cavity 36a is solidified, the gate valve 4 is closed, and the sliding member 34 is fixed by a predetermined amount by the hydraulic cylinder 25d.
Side, the tip of the partitioning convex portion 26a and the sliding member 34
, And only the gate valve 5 is opened to open the molten resin passage 25a and the second molten resin passages 25c and 27c.
And a cavity 36b outside the partition convex portion 26a.
The injection molding is performed by injecting a molten resin into the inside. In this step, the molten resin injected later fills the space in which the sliding member 34 is retracted, and contacts and assimilate with the previously injected resin before solidification (corresponding to the step shown in FIG. 4C). Thereafter, when the gate valve 5 is closed, the molten resin is cooled and solidified, and the molded product is released from the mold, the molded product is integrally formed with the partial skin material 15 as shown in FIG. A partially skinned product is obtained.

Next, the second method will be described. First, the skin material 15 is attached to the mold cavity surface 26A surrounded by the partition protrusion 26a of the movable mold 26 as described above (corresponding to the step shown in FIG. 4A). Next, in a state where the movable mold 26 is slightly opened from the mold fully closed position with respect to the fixed mold 27, the sliding member 34 is slid toward the movable mold 26 by the hydraulic cylinder 25d to form the partition convex portion 26a. By making contact with the tip, the cavity 36a of the skin material sticking portion where the skin material 15 is stuck is defined. In this state, only the gate valve 4 is opened while the gate valve 5 is closed, and the molten resin passage 25a communicates with the first molten resin passages 25b and 27d. A molten resin is injected (corresponding to the step shown in FIG. 4E).

Then, the gate valve 4 is closed and the molten resin passage 2 is closed.
After closing 5b and 27d, the movable mold 26 is moved in the mold clamping direction, and the cavity 3 to which the skin material 15 is attached is mounted.
The molten resin in 6a is compression-molded, and at the same time, the skin material 15 is attached (corresponding to the step shown in FIG. 4F). Thereafter, similarly to the first method described above, at a timing before the resin in the cavity 36a is solidified, the hydraulic cylinder 25
d, the sliding member 34 is drawn into the fixed mold 27 by a predetermined amount, and a space is provided between the tip of the partitioning convex portion 26a and the sliding member 34. Then, only the gate valve 5 is opened to open the molten resin passage 25a. And the second molten resin passages 25c, 27c, and injection molding is performed by injecting the molten resin into the cavity 36b outside the partition convex portion 26a (corresponding to the step shown in FIG. 4C). In this step, the molten resin injected later fills the space in which the sliding member 34 is retracted, and comes into contact with and assimilate the previously injected resin before solidification. Thereafter, the gate valve 5 is closed, the molten resin is cooled and solidified, and the molded product is released.

As a result, even in the second method, FIG.
As a result, a partial skin material-adhered molded article integrally formed with the partial skin material 15 is obtained. Also, this second
In the method of the first embodiment, the cavity 3 in which the skin material 15 is attached is used.
Since the molten resin in 6a is compression-molded, stronger adhesion between the resin material and the skin material 15 can be obtained. Further, a third method will be described.

First, also in the third method, the molten resin in the cavity 36a to which the skin material 15 is attached is compression-molded, and at the same time, until the skin material 15 is attached.
Since it is exactly the same as the above-mentioned second method, its description is omitted (corresponding to the steps shown in FIGS. 4A, 4E and 4F). First, only the cavity 36a of the skin material pasting shape portion is compression-molded and semi-solidified, and then the sliding member 34 is fixed by a predetermined amount by the hydraulic cylinder 25d.
And the movable mold 26 is again slightly opened with respect to the fixed mold 27, and only the gate valve 5 is opened to communicate the molten resin passage 25a with the second molten resin passages 25c and 27c. A predetermined amount of molten resin is injected into the cavity 36b outside the projection 26a (corresponding to the step shown in FIG. 4G).

Thereafter, the gate valve 5 is closed to close the second molten resin passages 25c and 27c, and the movable mold 26 is moved to the fixed mold 27 again to move to the mold clamping side, and the partition convex is formed. The molten resin in the cavity 36b outside the portion 26a is compression-molded (corresponding to the step shown in FIG. 4H). This allows
As shown in FIG. 4D, a partial skin material-adhered molded article integrally formed with the partial skin material 15 is obtained. In the third method, the molten resin in the cavity 36a to which the skin material 15 is attached and in the other cavities 36b are compression-molded, so that a stronger adhesion between the resin material and the skin material 15 can be obtained, A molded product with little distortion can be obtained.

As described above, according to the second embodiment of the present invention, as shown in FIG. 5, the periphery of the skin material 15 is not exposed on the surface of the molded product, and the skin material 15 and the non-skin material bonding portion are not exposed. Is clearly defined, and the same operation and effect as in the first embodiment can be obtained.

[0061]

As described above in detail, according to the mold apparatus for pasting and forming a partial skin material of the present invention (claims 1 to 8), the peripheral portion of the skin material is entangled in the thickness of the molded product. The surface of the molded product is not exposed, and the boundary between the skin material and the non-skin-applied part becomes clear. Can be manufactured.

Further, according to the present invention, as long as the mounting position of the skin material does not shift much, the appearance of the skin material attached to the molded article is improved, so that the cutting accuracy of the cloth can be reduced. The quality of molded products with partial skin material is greatly improved.
Further, according to the present invention, the first and second molten resin passages are respectively opened and closed by using the first and second opening / closing mechanisms, so that the first and second molten resin passages can be used without using a plurality of molds and a plurality of molding machines. Molding machine and one set of mold (mold apparatus of the present invention)
Also, there is an advantage that the partial skin material pasting molding and the compression molding can be performed very easily by using the above.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a mold device for pasting and forming a partial skin material as a first embodiment of the present invention.

FIG. 2 is a front view showing the cavity surface of the movable mold according to the first embodiment (a view as seen from an arrow A in FIG. 1).

FIG. 3 is a front view showing the cavity surface of the fixed mold according to the first embodiment (a view as seen from an arrow B in FIG. 1).

FIGS. 4A to 4H are schematic longitudinal sectional views for explaining a molding step of a molded article with a partial skin material, which is performed by using the mold apparatus of the first embodiment.

FIG. 5 is a partial cross-sectional view (a cross-sectional view corresponding to FIG. 11) showing a state of a skin material peripheral portion of a partial skin material-adhered molded product formed by the mold apparatus of the first embodiment.

FIG. 6 is a vertical sectional view showing a mold device for pasting and forming a partial skin material as a second embodiment of the present invention.

FIG. 7 is a front view showing a cavity surface of a movable mold according to a second embodiment (a view as seen from an arrow C in FIG. 6).

FIG. 8 is a front view showing a cavity surface of a fixed mold according to the second embodiment (a view as seen from an arrow D in FIG. 6).

FIG. 9 is a sectional view taken along the line EE in FIG. 6;

FIG. 10 is a longitudinal sectional view showing a conventional mold apparatus for pasting a partial skin material.

FIG. 11 is a partial cross-sectional view showing a state of a peripheral portion of a skin material when a partial skin material is pasted and formed by a conventional mold device.

[Explanation of symbols]

 Reference Signs List 1 fixed mold 1A cavity surface 1b first molten resin passage 1c second molten resin passage 1d groove 2 movable mold 2A cavity surface 2d hydraulic cylinder (actuator) 4 gate valve (first opening / closing mechanism) 5 gate valve ( Second opening / closing mechanism) 6, 6a to 6h Partition plate 15 Skin material 16a, 16b Cavity 25 Fixed mold support member 25b First molten resin passage 25c Second molten resin passage 25d Hydraulic cylinder (actuator) 26 Movable mold 26A Cavity surface 26a Partition convex portion 27 Fixed mold 27A Cavity surface 27c Second molten resin passage 27d First molten resin passage 34, 34a to 34h Sliding member 36a, 36b Cavity

Claims (8)

[Claims] 1. A fixed mold, and a movable mold which is installed to face the fixed mold and moves by clamping with respect to the fixed mold, wherein the fixed mold on the movable mold side includes The fixed mold and the movable mold are clamped in a state where the skin material is attached to the opposing surface of the above, to form a partial skin material pasted product in which the skin material is affixed to a part of the surface. A mold apparatus, wherein the periphery of the skin material attached to the movable mold is bent toward the fixed mold, and surrounds the entire periphery of the skin material, and the movable mold and the fixed mold A partition plate that can be moved in and out between
An actuator for driving the partition plate in and out is provided in the movable mold, and at a position facing the partition plate in the fixed mold, the actuator has a width wider than a tip end width of the partition plate, and A groove into which the tip of the partition plate can be fitted is formed, and a first molten resin passage for injecting the molten resin into a cavity inside the partition plate, and a molten resin into a cavity outside the partition plate. A second molten resin passage is formed in the fixed mold, and first and second opening / closing mechanisms for opening and closing the first molten resin passage and the second molten resin passage, respectively, are provided in the fixed mold. A mold apparatus for pasting partial skin material, characterized in that it is provided. 2. A skin material pasting portion to which the skin material is adhered by projecting the partition plate toward the fixed mold side by the actuator at the time of mold clamping and bringing the end of the partition plate into contact with the bottom of the groove. And the first opening / closing mechanism only opens the first molten resin passage, injects the molten resin into the cavity inside the partition plate to form the skin material pasting shape portion, The actuator pulls the partition plate toward the movable mold by a predetermined amount, and the second opening / closing mechanism opens only the second molten resin passage to inject the molten resin into the cavity outside the partition plate. The mold device for pasting and forming a partial skin material according to claim 1, wherein a portion outside the partition plate is integrally formed with the skin material pasting shape portion. 3. The partition plate is protruded toward the fixed mold by the actuator in a state where the movable mold is slightly opened from the mold fully closed position with respect to the fixed mold. The first opening / closing mechanism opens only the first molten resin passage so that the first opening / closing mechanism opens only the first molten resin passage so as to abut the inner surface of the partition plate. A predetermined amount of molten resin is injected into the cavity, the movable mold is moved to the fixed mold side to perform mold clamping, only the skin material-attached portion is compression-molded, and then the partition plate is moved by the actuator. Is drawn into the movable mold side by a predetermined amount, and only the second molten resin passage is opened by the second opening / closing mechanism to inject the molten resin into the cavity outside the partition plate. Part is integrated with the skin material pasted shape part Characterized by the form, the molding die apparatus attached portion cover material according to claim 1, wherein. 4. The partition plate is protruded toward the fixed mold by the actuator in a state where the movable mold is slightly opened from the mold fully closed position with respect to the fixed mold. The first opening / closing mechanism opens only the first molten resin passage so that the first opening / closing mechanism opens only the first molten resin passage so as to abut the inner surface of the partition plate. A predetermined amount of molten resin is injected into the cavity, the movable mold is moved to the fixed mold side to perform mold clamping, only the skin material-attached portion is compression-molded, and then the partition plate is moved by the actuator. Is drawn into the movable mold side by a predetermined amount, and the movable mold is again slightly opened with respect to the fixed mold, and only the second molten resin passage is opened by the second opening / closing mechanism. A predetermined amount of molten resin is placed in the cavity outside the partition plate. Again, the movable mold is moved to the fixed mold side to perform mold clamping, and the outer portion of the partition plate is compression-molded integrally with the skin material pasting portion. The mold apparatus for pasting partial skin material according to claim 1. 5. A fixed mold, and a movable mold which is installed to face the fixed mold and which moves by clamping with respect to the fixed mold, wherein: The fixed mold and the movable mold are clamped in a state where the skin material is attached to the opposing surface of the above, to form a partial skin material pasted product in which the skin material is affixed to a part of the surface. A mold apparatus, wherein a partition convex portion surrounding the entire periphery of the skin material is formed on the movable mold in a state where a peripheral edge of the skin material attached to the movable mold is bent toward the fixed mold side. In the fixed mold, at a position facing the partition convex portion,
A sliding member having a width wider than the leading end width of the partitioning convex portion and capable of contacting the leading end of the partitioning convex portion during mold clamping is provided so as to be slidable in the moving direction of the movable mold. An actuator for slidably driving the sliding member is provided on the fixed mold side, a first molten resin passage for injecting the molten resin into the cavity inside the partition convex portion, and a molten resin passage outside the partition convex portion for the molten resin. A second molten resin passage to be injected into the cavity is formed in the fixed mold, and first and second opening / closing mechanisms for opening and closing the first molten resin passage and the second molten resin passage, respectively, are provided. A mold apparatus for pasting and forming a partial skin material, characterized in that it is formed. 6. A cavity in a skin material pasting portion to which the skin material is adhered by sliding the sliding member toward the movable mold side by the actuator at the time of mold clamping and abutting against the tip of the partition convex portion. After the first opening / closing mechanism opens only the first molten resin passage and injects the molten resin into the cavity inside the partition convex portion to form the skin material pasting portion, The sliding member is pulled into the fixed mold side by a predetermined amount by the actuator, only the second molten resin passage is opened by the second opening / closing mechanism, and the molten resin is injected into the cavity outside the partition convex portion. The mold device for pasting and molding a partial skin material according to claim 1, wherein the mold is injected, and a portion outside the partition convex portion is integrally formed with the skin material pasting shape portion. 7. When the movable mold is slightly opened from the mold fully closed position with respect to the fixed mold, the sliding member is slid toward the movable mold by the actuator, and the partition protrusion is formed. A cavity in a skin material attaching portion where the skin material is attached by contacting the tip of the partition member, and only the first molten resin passage is opened by the first opening / closing mechanism to form a cavity inside the partition convex portion. A predetermined amount of molten resin is poured into the inside, the movable mold is moved to the fixed mold side to perform mold clamping, only the skin material-attached portion is compression-molded, and then the sliding member is moved by the actuator. Is drawn into the fixed mold side by a predetermined amount, and only the second molten resin passage is opened by the second opening / closing mechanism to inject molten resin into the cavity outside the partition convex portion, and the partition convex portion is formed. The outer part is integrally formed with the skin material Characterized that, the molding die apparatus attached portion cover material according to claim 1, wherein that. 8. When the movable mold is slightly opened with respect to the fixed mold from the mold fully closed position, the sliding member is slid toward the movable mold by the actuator, and the partitioning convex portion is formed. A cavity in a skin material attaching portion where the skin material is attached by contacting the tip of the partition member, and only the first molten resin passage is opened by the first opening / closing mechanism to form a cavity inside the partition convex portion. A predetermined amount of molten resin is poured into the inside, the movable mold is moved to the fixed mold side to perform mold clamping, only the skin material-attached portion is compression-molded, and then the sliding member is moved by the actuator. Is drawn into the fixed mold side by a predetermined amount, and the movable mold is opened again with respect to the fixed mold, and only the second molten resin passage is opened by the second opening / closing mechanism. Inject a predetermined amount of molten resin into the cavity outside the convex part of the partition Again, moving the movable mold to the fixed mold side to perform mold clamping, and compression molding an outer portion of the partition convex portion integrally with the skin material pasting shape portion. Item 1
A mold apparatus for pasting and forming a partial skin material as described above.