JP3894727B2 - Integral molding method of multiple resins and integral molding die - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for integrally molding a plurality of resins and an integral molding die. More specifically, the present invention relates to a method for integrally molding a plurality of resins and a mold for integrally molding a plurality of resins with a parting line as a boundary in various fields such as automobile parts, housing equipment parts, daily necessities, and home appliance OA parts.
[0002]
[Background]
When a plurality of resins (for example, resins of different colors) are integrally formed with a parting line as a boundary, particularly when a crystalline resin is used as the resin, the primary resin is first injected and the primary resin is cooled and solidified. At this time, a gap is generated between the mold and the primary resin molded product due to the shrinkage of the primary resin. In this state, when the secondary resin is injected, the secondary resin is likely to enter the gap formed between the mold and the primary resin molded product, so the joint portion between the primary resin and the secondary resin There is a problem that a product with a good parting line cannot be obtained.
[0003]
As a method that can improve this point to some extent, an “instrument panel integrally having an airbag door portion and a molding method thereof” disclosed in Japanese Patent Laid-Open No. 10-250519 is known.
In this molding method, the inside of the cavity is partitioned by a slide core having a stepped tip, and a soft resin (primary resin) is injected into one partition space to form an airbag door portion. In this method, after the slide core is retracted from the cavity, a main body is formed by injecting a cured resin (secondary resin) into the other compartment space.
[0004]
According to this method, since the secondary resin enters the stepped portion of the slide core, that is, enters the counter-design surface side of the primary resin of the joint portion, the force that presses the primary resin of the joint portion toward the design surface side. As a result, the gap between the mold and the design surface of the primary resin molded product is closed, and as a result, there is an advantage that the parting line at the joint between the primary resin and the secondary resin can be improved.
[0005]
[Problems to be solved by the invention]
However, in the molding method described above, since the secondary resin enters the stepped portion of the slide core, the secondary resin protrudes toward the counter-design surface of the molded product, and the joint portion on the counter-design surface side is raised from the other surface. A product is obtained.
If there is a raised part on the counter-designed surface from the other surface, it may cause a problem in installation depending on the installation space. In such a case, the raised portion must be excised by secondary processing such as cutting or grinding, which requires man-hours and leads to an increase in cost.
[0006]
The object of the present invention is to solve the above-described conventional problems, and to provide an integrated molding method and an integral molding die for a plurality of resins having good parting lines and excellent design without requiring secondary processing. It is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following two methods.
In the first method, sink marks are generated on the side opposite to the primary design surface of the primary resin, and the secondary resin easily flows into the sink marks, thereby closing the gap between the primary resin design surface and the cavity. The secondary resin does not enter the gap.
In the second method, after cooling the primary resin, the primary resin is pressed from the counter-design surface side toward the design surface side to close the gap between the design surface of the primary resin and the cavity, and this state In this case, a secondary resin is injected.
[0008]
First, a specific integral molding method for realizing the first technique includes a step of partitioning the inside of a cavity with a movable block in an integral molding method of a plurality of resins that are integrally molded with a plurality of parting lines as boundaries. , Injecting the primary resin into one of the compartment spaces partitioned by the movable block, and in the vicinity of the movable block, while slowing the counter-design surface side cooling rate from the design surface side cooling rate of the primary resin, A step of cooling the primary resin injected and filled in the one partition space, causing a sink where the secondary resin flows into the counter-design surface of the primary resin, and after retracting the movable block from the cavity And a step of injecting a secondary resin into the other partition space partitioned by the movable block.
Any resin can be used as long as it is a thermoplastic resin. The plurality of resins refers to resins having different colors, resin types, two or more types of resins having different properties, and the like. Moreover, the resin in this case is meant to include a resin composition.
[0009]
According to this integral molding method, the interior of the cavity is partitioned by the movable block, and then the primary resin is injected into one partitioned space partitioned by the movable block. Here, in the vicinity of the movable block, while the counter surface side cooling rate is slower than the design surface side cooling rate of the primary resin, that is, the counter surface side temperature is kept higher than the design surface side temperature of the primary resin. When the primary resin is cooled, particularly in the case of a crystalline resin, crystallization on the side of the counter-design surface proceeds from the side of the design surface, and sink marks are generated on the side of the counter-design surface of the primary resin. After that, after retracting the movable block from the cavity, when the secondary resin is injected into the other compartment space, the secondary resin enters the sink portion formed on the counter-design surface of the primary resin. Is pressed from the counter-design surface side toward the design surface side, the gap between the design surface of the primary resin and the cavity is closed. Therefore, since the secondary resin can be prevented from entering between the design surface of the primary resin and the cavity, an integrally molded product having a good parting line and excellent design properties can be obtained. Of course, since a raised portion does not occur on the anti-design surface side, secondary processing can be eliminated.
[0010]
In the first method, in order to keep the temperature on the side opposite to the design surface of the primary resin higher than the temperature on the design surface side, it is usual to make a difference in the mold temperature. For example, when a crystalline resin is used, the anti-design surface side mold temperature is kept at “crystallization temperature to (crystallization temperature −40 ° C.)”, and the design surface-side mold is at a temperature lower than that and the anti-design surface. For example, the temperature may be kept at 20 ° C. or lower than the side mold temperature. In the case of using an amorphous resin, the anti-design surface side mold temperature is kept 20 ° C. or more, preferably 30 ° C. or more higher than the design surface side mold temperature.
[0011]
A specific integral mold for realizing the first technique is a multiple resin integral mold in which a plurality of resins are integrally molded with a parting line as a boundary, a mold having a cavity inside, and the mold A movable block that is provided in the cavity inside the mold so as to be able to advance and retreat, and that divides the cavity, and heat that is provided on the counter-design surface side mold in one of the compartment spaces partitioned by the movable block in the vicinity of the movable block And a supply means.
[0012]
According to this integral molding die, when the primary resin is injected into one compartment space partitioned by the movable block, the primary resin in the vicinity of the movable block has a mold temperature on the counter-design surface side by the heat supply means. Since it is higher than the mold temperature on the design surface side, sink marks occur on the side of the primary resin on the opposite design surface side. After that, when the secondary resin is injected into the other partition space partitioned by the movable block, the secondary resin enters the sink portion formed on the counter-design surface side of the primary resin, and the primary resin is on the counter-design surface side. As a result of pressing toward the design surface side, the gap between the design surface of the primary resin and the cavity is closed. Therefore, since the secondary resin can be prevented from entering between the design surface of the primary resin and the cavity, an integrally molded product having a good parting line and excellent design properties can be obtained. Of course, since a raised portion does not occur on the anti-design surface side, secondary processing can be eliminated.
[0013]
A specific other integral mold for realizing the first technique is a multiple resin integral mold in which a plurality of resins are integrally molded with a parting line as a boundary, a mold having a cavity inside, A movable block that can be moved forward and backward in the cavity inside the mold and divides the cavity, and in the vicinity of the movable block, the mold is provided on the counter-design surface side mold in one partition space partitioned by the movable block. And a heat insulating layer.
[0014]
According to this integral molding die, when the primary resin is injected into one of the compartment spaces partitioned by the movable block, the primary resin in the vicinity of the movable block has a mold temperature on the side opposite to the design surface by the heat insulating layer. Since it is higher than the mold temperature on the surface side, sink marks are generated on the counter-design surface side of the primary resin. After that, when the secondary resin is injected into the other partition space partitioned by the movable block, the secondary resin enters the sink portion formed on the counter-design surface side of the primary resin, and the primary resin is on the counter-design surface side. As a result of pressing toward the design surface side, the gap with the cavity is closed. Therefore, a parting line is good, and an integrally molded product excellent in design is obtained. Of course, since a raised portion does not occur on the anti-design surface side, secondary processing can be eliminated.
[0015]
In the integral molding die, the heat insulating layer is preferably a heat insulating material provided on a counter-design surface side die in the one partition space.
Here, as a heat insulating material, any material may be used as long as it has a low thermal conductivity such as a heat insulating sheet or a heat insulating film.
With such a configuration, there is an advantage that the object can be achieved with a relatively inexpensive and simple configuration.
[0016]
In the above-mentioned integral mold, the heat insulating layer is preferably a gas layer injected from a counter-design surface side mold in the one partition space. In order to form the gas layer, a gas injection hole may be provided in the counter-design surface side mold in one partition space, and gas may be injected from the gas injection hole.
With such a configuration, the gas layer formed on the counter-design surface side mold in one partition space is cooled while the counter-design surface side temperature of the primary resin is kept higher than the design surface side temperature. The For this reason, sink marks occur on the side of the anti-design surface of the primary resin, so that the same effect as described above can be expected.
[0017]
A specific integral molding method for realizing the second technique is a method of integrally molding a plurality of resins with a parting line as a boundary, and a step of partitioning the inside of the cavity with a movable block, A step of injecting the primary resin into one of the compartment spaces partitioned by the movable block, and after completion of the injection of the primary resin, the vicinity of the movable block of the primary resin injected and filled into the one partition space is counter-designed. Pressing from the surface side toward the design surface side, and after retracting the movable block from the cavity, injecting a secondary resin into the other partition space partitioned by the movable block. It is characterized by.
[0018]
According to this integral molding method, the interior of the cavity is partitioned by the movable block, and then the primary resin is injected into one partitioned space partitioned by the movable block. Then, after the injection of the primary resin is completed, when the primary resin is pressed from the counter-design surface side toward the design surface side, the primary resin is pressed from the counter-design surface side to the design surface side, and the gap with the cavity is closed. Can be removed. In this state, after retracting the movable block from the cavity and injecting the secondary resin into the other compartment space, the secondary resin does not enter between the design surface of the primary resin and the cavity. An integral molded article having a good parting line and excellent design properties can be obtained. Of course, since a raised portion does not occur on the anti-design surface side, secondary processing can be eliminated. When the primary resin is pressed from the counter-design surface side to the design surface side in the vicinity of the movable block, the process (operation) needs to be performed after at least the cooling of the primary resin. The pressing step may be started during the cooling of the next resin. Moreover, it is preferable that the pressing process is continued until the injection of the secondary resin is completed.
[0019]
A specific integral mold for realizing the second technique is an integral mold of a plurality of resins that are integrally molded with a plurality of parting lines as a boundary. a movable block for partitioning retractably provided in the cavity in the mold internal cavity, near the movable block of primary resin is injected and filled in the compartment space of one partitioned by a variable motion block this anti design Pressing means for pressing from the surface side toward the design surface side.
[0020]
According to this integral molding die, after the primary resin is injected into one of the compartment spaces partitioned by the movable block, the primary resin is pressed from the counter-design surface side toward the design surface side by the pressing means. Then, the primary resin is pressed from the counter-design surface side to the design surface side, and the gap between the design surface of the primary resin and the cavity is closed. In this state, after retracting the movable block from the cavity and injecting the secondary resin into the other compartment space, the secondary resin does not enter between the design surface of the primary resin and the cavity. An integral molded article having a good parting line and excellent design properties can be obtained. Of course, since a raised portion does not occur on the anti-design surface side, secondary processing can be eliminated.
[0021]
In the integral molding die, the pressing means includes a movable core provided in a counter-design surface-side mold in one partition space partitioned by the movable block in the vicinity of the movable block, and the movable core is 1 It is preferable to include a pressing force applying unit that applies a pressing force to the movable core in the direction of pressing the next resin.
Here, the pressing force applying means may be a spring, or a hydraulic or pneumatic cylinder.
With such a configuration, the primary resin in the vicinity of the movable block can be evenly pressed over a certain range, so that the gap between the design surface of the primary resin and the cavity can be reliably closed.
[0022]
In the integral molding die, the pressing means includes a gas injection hole provided in a counter-design surface side mold in one partition space defined by the movable block in the vicinity of the movable block, and the gas injection hole. It is preferable that a gas injection means for injecting a gas is included.
With such a configuration, when the gas is injected into the gas injection hole, the primary resin is pressed from the counter-design surface side to the design surface side by the injected gas pressure. The gap with the cavity is closed. Accordingly, this also provides an integrally molded product having a good parting line and excellent design.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.
[0024]
[First Embodiment]
FIGS. 1A and 1B show an integral molding die of the first embodiment. This integrally molded mold is divided into upper and lower molds 1 and 2 having a cavity 3 on the dividing surface, and the inside of the cavity 3 in the molds 1 and 2 is divided into two partition spaces 4 and 5. In the vicinity of the movable block 6, a movable block 6 and a heat supply means 7 provided in the counter-design surface side mold 1 </ b> A in one partitioned space 4 partitioned by the movable block 6 are provided.
The heat supply means 7 includes a heat conduction block 8 made of a material having high thermal conductivity provided in the anti-design surface side mold 1A in the partition space 4, and a fluid conduit 9 provided inside the heat conduction block 8. And a temperature control fluid supply means (not shown) for supplying a temperature-controlled temperature control fluid 10 to the fluid line 9. Note that the temperature control fluid 10 may be oil or hot water.
[0025]
In order to integrally mold a plurality of resins with a parting line as a boundary using this integrally molded mold, the following steps are performed.
(1) The inside of the cavity 3 is partitioned by the movable block 6. That is, the movable block 6 is advanced into the cavity 3 and the inside of the cavity 3 is partitioned into two partition spaces 4 and 5.
(2) The primary resin J1 is injected into one compartment space 4 partitioned by the movable block 6 (see FIG. 1A).
(3) In the vicinity of the movable block 6, the primary resin J1 is cooled while keeping the counter surface side cooling rate slower than the design surface side cooling rate of the primary resin J1. That is, a temperature-controlled fluid 10 having a temperature adjusted is caused to flow into the fluid pipe 9 of the heat supply means 7, and the counter-design surface side mold temperature of the primary resin J <b> 1 is kept higher than the design surface side mold temperature. Next resin J1 is cooled. Then, sink marks are generated on the side opposite to the design surface of the primary resin J1.
[0026]
(4) After retracting the movable block 6 from the cavity 3, the secondary resin J2 is injected into the other partitioned space 5 partitioned by the movable block 6 (see FIG. 1B). That is, after the movable block 6 is retracted from the cavity 3, the secondary resin J <b> 2 is injected into the other partition space 5. Then, the secondary resin J2 injected into the other partition space 5 enters the sink portion formed on the counter-design surface side of the primary resin J1, and presses the primary resin J1 from the counter-design surface side to the design surface side. As a result, the gap between the design surface of the primary resin J1 and the cavity 3 is closed. Therefore, a parting line is good, and an integrally molded product excellent in design is obtained.
[0027]
According to the first embodiment, since the primary resin J1 is cooled while the counter surface side cooling rate is slower than the design surface side cooling rate of the primary resin J1, the primary resin near the movable block 6 is cooled. Sinking occurs on the anti-design surface side of J1. In this state, since the secondary resin J2 is injected, the secondary resin J2 enters the sink portion formed on the counter-design surface side of the primary resin J1, and the primary resin J1 is designed from the counter-design surface side. As a result of pressing to the surface side, the gap between the design surface of the primary resin J1 and the cavity 3 is closed. Therefore, a parting line is good, and an integrally molded product excellent in design is obtained.
By the way, although the primary resin is cooled at the time of starting injection of the secondary resin, the primary resin in the vicinity of the parting portion is at a higher temperature than other primary resin parts, so the secondary resin is injected. After completion and sufficient cooling, the strength is improved when the bonding strength is measured. This is presumed to be because molecular diffusion of both resins at the joint surface between the primary resin and the secondary resin is promoted. Of course, since a raised portion does not occur on the anti-design surface side, secondary processing can be eliminated.
In addition, the heat supply means 7 is not limited to the configuration of the above-described embodiment, and may have another configuration. For example, a structure in which a heater is embedded in the heat conduction block 8 may be used.
[0028]
[Second Embodiment]
FIGS. 2A and 2B show an integral molding die of the second embodiment. In this integral molding die, the heat supply means 7 is omitted from the integral molding die of the first embodiment, and instead of this, the anti-design surface side mold 1A (movable block) in one compartment space 4 is replaced. 6 is provided with a heat insulating layer 11.
Here, the heat insulating layer 11 is constituted by a heat insulating film (or heat insulating sheet) 12 attached to the counter-design surface side mold 1 </ b> A in the partition space 4. 2A and 2B, the thickness of the heat insulating layer 11 is increased for the sake of explanation. In the case of carrying out, there is no problem even if it is so, but the thickness of the heat insulating layer 11 is made extremely thinner than the thickness of the molded product, or the heat insulating layer 11 is embedded in the anti-design surface side mold 1A and In general, the design surface side mold 1A is substantially flat.
[0029]
According to the second embodiment, since the heat insulating layer 11 is provided on the anti-design surface side mold 1 </ b> A in the partition space 4, the primary resin J <b> 1 in the vicinity of the movable block 6 is counter-designed by the heat insulating layer 11. Since the mold temperature on the side is higher than the mold temperature on the design surface side, sink marks are generated on the side opposite to the design surface of the primary resin J1. Therefore, as a result of the secondary resin J2 invading into the sink part formed on the counter-design surface side of the primary resin J1, the primary resin J1 is pressed from the counter-design surface side to the design surface side, and the gap with the cavity 3 is closed. As a result, the same effect as in the first embodiment can be expected.
In particular, since the heat insulating layer 11 is constituted by the heat insulating sheet, the heat insulating film 12 and the like provided in the counter-design surface side mold 1A in one partition space 4, it can be configured relatively inexpensively and easily. There are advantages.
[0030]
In the second embodiment, as the heat insulating layer 11, a heat insulating sheet, a heat insulating film 12, or the like is used. However, the present invention is not limited to this, and other materials and structures may be used.
For example, as shown in FIGS. 3A and 3B, the material 13 may have a low thermal conductivity.
Further, as shown in FIGS. 4A and 4B, a gas injection hole 14 is provided in the counter-design surface side mold 1A in one partition space 4, and heat insulation is provided by the gas layer injected from the gas injection hole 14. The layer 11 may be formed. If it is set as such a structure, the anti-design surface side temperature of the primary resin J1 is made into the design surface by inject | pouring gas from the gas injection hole 14 provided in the anti-design surface side metal mold | die 1A in one division space 4. FIG. Cooling can be performed while keeping the temperature higher than the side temperature. Therefore, since sink marks are generated on the side of the anti-design surface of the primary resin J1, the same effect as described above can be expected.
[0031]
[Third Embodiment]
FIGS. 5A and 5B show an integral molding die of the third embodiment. This integrally molded mold is divided into upper and lower molds 1 and 2 having a cavity 3 on the dividing surface, and the inside of the cavity 3 in the molds 1 and 2 is divided into two partition spaces 4 and 5. Press that presses the primary resin J1 injected and filled in the movable block 6 and in one partitioned space 4 partitioned by the movable block 6 from the counter-design surface side toward the design surface side in the vicinity of the movable block 6 Means 21.
In the vicinity of the movable block 6, the pressing means 21 includes a movable core 22 provided in the counter-design surface-side mold 1 </ b> A in one partitioned space 4 partitioned by the movable block 6, and the movable core 22 is a primary resin. And a spring 23 as a pressing force applying means for applying a pressing force to the movable core 22 in the direction of pressing J1.
[0032]
In order to integrally mold a plurality of resins with a parting line as a boundary using the integral mold, the following steps are performed.
(11) Same as (1) above.
(12) Same as (2) above.
(13) After the injection of the primary resin J1 is completed, the primary resin J1 is pressed from the counter-design surface side toward the design surface side in the vicinity of the movable block 6. That is, the pressing means 21 presses the primary resin J1 in the vicinity of the movable block 6 from the counter-design surface side toward the design surface side. Note that the pressing start time of the movable block 6 is not limited to after the cooling of the primary resin J1, and may be started during the cooling of the primary resin J1, and the pressing process is completed for the injection of the secondary resin J2. It is preferable to continue for a while.
[0033]
(14) After retracting the movable block 6 from the cavity 3, the secondary resin J <b> 2 is injected into the other partitioned space 5 partitioned by the movable block 6. Then, since the secondary resin J2 does not enter between the design surface of the primary resin J1 and the cavity 3, an integrally molded product having a good parting line and excellent design properties is obtained. Of course, since no raised portion is formed on the counter-design surface side, secondary processing can be made unnecessary.
[0034]
According to the third embodiment, after cooling the primary resin J1, the primary resin J1 is pressed from the counter-design surface side toward the design surface side, and the space between the design surface of the primary resin J1 and the cavity 3 is pressed. In a state where the gap is closed, after the movable block 6 is retracted from the cavity 3, the secondary resin J2 is injected into the other partition space 5, so the secondary resin J2 is a design of the primary resin J1. Since it does not penetrate between the surface and the cavity 3, a parting line is good, and an integrally molded product excellent in design is obtained. Of course, since a raised portion does not occur on the anti-design surface side, secondary processing can be eliminated.
[0035]
Further, the pressing means 21 includes a movable core 22 provided in the counter-design surface side mold 1A in one partition space 4 partitioned by the movable block 6 in the vicinity of the movable block 6, and the movable core 22 is one. Since it includes a spring 23 as a pressing force applying means for applying a pressing force to the movable core 22 in the direction in which the secondary resin J1 is pressed, the primary resin J1 in the vicinity of the movable block 6 is spread over a certain range. It is possible to press evenly, and the gap between the design surface of the primary resin J1 and the cavity 3 can be reliably closed.
[0036]
In addition, in 3rd Embodiment, although the spring 23 was used as a pressing force provision means, it is not restricted to this. For example, a hydraulic or pneumatic cylinder 24 as shown in FIGS.
[0037]
Moreover, in 3rd Embodiment, although the press means 21 was comprised from the movable core 22 and the spring 23, it is not restricted to this. For example, as shown in FIGS. 7A and 7B, in the vicinity of the movable block 6, a gas injection hole provided in the counter-design surface-side mold 1A in one partitioned space 4 partitioned by the movable block 6 25 and a gas injection means (not shown) for injecting gas into the gas injection hole 25 may be included. With such a configuration, when the gas is injected into the gas injection hole 25, the primary resin J1 is pressed from the counter-design surface side to the design surface side by the injected gas pressure. A gap between the design surface and the cavity 3 is closed. Accordingly, this also provides an integrally molded product having a good parting line and excellent design.
[0038]
【The invention's effect】
As described above, according to the integral molding method and integral molding die of a plurality of resins of the present invention, it is possible to obtain an integrally molded product having a good parting line and excellent design without requiring secondary processing. Can do.
[Brief description of the drawings]
FIG. 1 is a view showing an integral molding die according to a first embodiment of the present invention.
FIG. 2 is a view showing an integral mold according to a second embodiment of the present invention.
FIG. 3 is a diagram showing a modification of the second embodiment.
FIG. 4 is a diagram showing still another modification of the second embodiment.
FIG. 5 is a view showing an integral mold according to a third embodiment of the present invention.
FIG. 6 is a diagram showing a modification of the third embodiment.
FIG. 7 is a diagram showing still another modification of the third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 2 Mold 1A Anti-design surface side mold 3 Cavity 4, 5 Compartment space 6 Movable block 7 Heat supply means 11 Heat insulation layer 12 Heat insulation film (heat insulation material)
13 Low thermal conductivity material (heat insulation)
14 Gas injection hole 21 Pressing means 22 Movable core 23 Spring (pressing force urging means)
24 Cylinder (Pressure force biasing means)
25 Gas injection hole J1 Primary resin J2 Secondary resin

Claims (9)

In the integral molding method of multiple resins that are integrally molded with a parting line as the boundary,
Partitioning the interior of the cavity with a movable block;
Injecting a primary resin into one compartment space partitioned by the movable block;
In the vicinity of the movable block, the primary resin injected and filled in the one partition space is cooled while the counter surface side cooling rate is slower than the design surface side cooling rate of the primary resin, and the primary resin is cooled. A step of causing sink marks into which the secondary resin flows into the counter-design side ;
After retracting the movable block from the cavity, injecting a secondary resin into the other partition space partitioned by the movable block;
A method for integrally forming a plurality of resins, comprising: In an integral molding die of multiple resins that are integrally molded with a parting line as a boundary,
A mold having a cavity inside;
A movable block that is provided so as to be able to advance and retract in the cavity inside the mold and partitions the cavity;
An integral molding die of a plurality of resins, comprising: heat supply means provided in a counter-design surface side die in one partition space partitioned by the movable block in the vicinity of the movable block. In an integral molding die of multiple resins that are integrally molded with a parting line as a boundary,
A mold having a cavity inside;
A movable block that is provided so as to be able to advance and retract in the cavity inside the mold and partitions the cavity;
An integral molding die of a plurality of resins, comprising a heat insulating layer provided on a counter-design surface side die in one compartment space partitioned by the movable block in the vicinity of the movable block. In the integral molding die of a plurality of resins according to claim 3,
The said heat insulation layer is a heat insulating material provided in the anti-design surface side metal mold | die in said one division space, The integral molding die of multiple resin characterized by the above-mentioned. In the integral molding die of a plurality of resins according to claim 3,
The heat-insulating layer is a gas layer injected from a counter-design surface-side mold in the one compartment space. In the integral molding method of multiple resins that are integrally molded with a parting line as the boundary,
Partitioning the interior of the cavity with a movable block;
Injecting a primary resin into one compartment space partitioned by the movable block;
After completion of the injection of the primary resin, a step of pressing the vicinity of the movable block of the primary resin injected and filled in the one partition space from the counter-design surface side toward the design surface side;
After retracting the movable block from the cavity, injecting a secondary resin into the other partition space partitioned by the movable block;
A method for integrally forming a plurality of resins, comprising: In an integral molding die of multiple resins that are integrally molded with a parting line as a boundary,
A mold having a cavity inside;
A movable block that is provided so as to be able to advance and retract in the cavity inside the mold and partitions the cavity;
The neighborhood movable block of primary resin is injected and filled in the compartment space of one partitioned by a variable motion block of this, a pressing means for pressing toward the design surface side from the anti design surface side,
A multi-resin integral molding die characterized by having In the integral molding die of a plurality of resins according to claim 7,
In the vicinity of the movable block, the pressing means includes a movable core provided in a counter-design surface side mold in one partition space partitioned by the movable block, and a direction in which the movable core presses the primary resin. A multi-resin integral molding die comprising a pressing force applying means for applying a pressing force to the movable core. In the integral molding die of a plurality of resins according to claim 7,
In the vicinity of the movable block, the pressing means includes a gas injection hole provided in a counter-design surface side mold in one partition space partitioned by the movable block, and a gas injection for injecting gas into the gas injection hole And a plurality of resin integral molding dies.

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