JP2009160873A - Molding method and molding apparatus for two-color molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a molding method and molding apparatus of two-color molding formed by demarcating a cavity by raising or lowering a partition plate in the cavity, or communicating the demarcated cavities with each other, and by filling respective demarcated cavities with molten resins of different colors by injection, simplified in the structure of molds and evenly controlled in the thicknesses of a general part and a sloped part. <P>SOLUTION: The partition plate 70 demarcating the cavity C between upper and lower molding molds 50, 60 is supported on an expanding/contracting tube 80 contained in the lower molding mold 60. When the expanding/contracting tube 80 is expanded, the partition plate 70 is raised to abut on a mold face of the upper molding mold 50, and when the expanding/contracting tube 80 is contracted, the partition plate 70 is lowered to communicate the cavities with each other. Thus, the structure is simplified compared with a conventional one, and the thicknesses of the general part 10a and sloped part 10b are evenly controlled by dividing the partition plate 70 and expanding/contracting tube 80 into the general part 10a and sloped part 10b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a molding method and a molding apparatus for a two-color molded article suitable for automobile interior parts such as automobile door trims, luggage trims, trunk trims, and the like, and in particular, by eliminating a cylinder for driving a partition plate. Molding method and molding device for two-color molded products with improved molding accuracy, such as a simplified structure and a higher degree of freedom in designing the mold, as well as ensuring a good thickness on the slope of the product. About.

  FIG. 15 is a front view showing an automotive door trim that is a representative part of automotive interior parts. The automotive door trim 1 includes a door trim upper 2 and a door trim lower 3 in order to enhance the appearance design. It consists of two-color molded products with different colors.

  And the structure of the shaping | molding apparatus 4 which shape | molds this door trim 1 is demonstrated based on FIG. 16, FIG. First, the molding apparatus 4 is provided with a movable mold 5 and a fixed mold 6 so that the mold can be clamped and opened, and the fixed mold at the parting section that divides the door trim upper 2 and the door trim lower 3 is provided. A partition plate 7 is provided on the mold 6. The partition plate 7 moves up and down by a predetermined stroke by the drive cylinder 7a. When the door trim upper 2 is molded, the partition plate 7 faces the cavity 8 by driving the drive cylinder 7a, and the door trim upper molding cavity 8a and the door trim lower molding cavity 8b. , The molten resin M1 on the door trim upper 2 side is prevented from entering the door trim lower molding cavity 8b. When the door trim lower 3 is molded, the partition plate 7 is lowered, and the door trim upper 2 and the door trim are separated. Integral molding with the lower 3 is performed.

  That is, at the time of molding the door trim upper 2, as shown in FIG. 7 is abutted against the mold surface of the movable mold 5, and is divided into a door trim upper molding cavity 8a and a door trim lower molding cavity 8b. Thereafter, molten resin M1 is injected and filled into the door trim upper molding cavity 8a, and the door trim upper 2 is first molded into a required shape.

  When the molding of the door trim upper 2 is completed, as shown in FIG. 17B, the partition plate 7 is lowered and retracted from the cavity 8 by the contraction operation of the drive cylinder 7a, and the door trim lower molding cavity 8b is formed. The molten resin M2 is injected and filled therein, and the door trim lower 3 is molded integrally with the door trim upper 2 to complete the molding of the door trim 1 shown in FIG. A conventional example of forming a two-color molded product using a partition plate is shown in detail in Patent Document 1.

JP-A-8-267479

  Thus, conventionally, in order to form a two-color molded product (door trim) 1 using the same molding device 4, a partition plate 7 that divides the cavity 8 and a cylinder 7a that drives the partition plate 7 are provided. In other words, a lot of mold space for accommodating the cylinder 7a is required, the degree of freedom of the mold is limited, and a control mechanism for the cylinder 7a is required, resulting in high costs.

  Further, the left and right side edge portions of the door trim 1 are provided with a sloped portion 1a to give the product a texture. As shown in FIG. 18, the sloped portion is shown when the partition plate 7 is raised and lowered. In the cavity 8c corresponding to 1a, since the upper part of the partition plate 7 remains in the cavity 8c when the partition plate 7 is lowered, it is difficult to secure the plate thickness of the slope portion 1a. When 1a becomes thin and the thickness of the slope portion 1a is secured, the thickness of the general portion tends to be excessively thick, and it is difficult to set both the general portion and the slope portion 1a to a uniform thickness. A drawback was pointed out.

  The present invention has been made in view of such circumstances, and a molding method for a two-color molded product for molding a two-color molded product using a molding apparatus provided with a partition plate that divides a cavity, and a molding used therefor Both the general part and the slope part can be used with a simple and inexpensive structure by eliminating the cylinder of the partition plate, which is restricted by the degree of freedom of the mold and has a complicated control mechanism. It is an object of the present invention to provide a molding method and a molding apparatus for a two-color molded product that can ensure a uniform thickness and can improve molding accuracy.

  Therefore, the present inventor replaced the conventional cylinder mechanism such as a hydraulic cylinder as a drive mechanism for moving the partition plate up and down, and filled or discharged fluid in the tube, and lifted and lowered the partition plate by expansion and contraction of the tube. Focusing on the fact that the structure can be simplified by operating, the present invention has been completed.

  That is, according to the present invention, after the molding upper and lower mold cavities are divided into two cavities by raising the partition plate, the molten resin is injected and filled into the first cavity, and the resin molded product on one side is molded. Two-color molding formed by lowering the partition plate, communicating between the cavities, injecting and filling molten resin into the second cavity, and integrating the resin molded product on the other side with the resin molded product on the one side In the molding method of the product, the partition plate is supported on the upper surface of the expansion / contraction tube accommodated in the accommodating groove portion of the molding lower mold, and the expansion / contraction tube is filled with the fluid from the fluid supply system to expand / contract By expanding the tube until the partition plate is sealed with the mold surface of the molding upper mold, the two cavities are partitioned, and the molten resin is put into the first cavity. The partition plate is formed by discharging and filling and molding the resin molded product on one side, and discharging the fluid from the expanded / shrinkable tube in the expanded state to the outside through the fluid discharge system, and contracting the expanded / shrinkable tube. After the two cavities are made to communicate with each other by lowering, the molten resin is injected and filled into the second cavity, and the resin molded product on the other side is molded integrally with the resin molded product on the one side. It is characterized by becoming.

  Here, the two-color molded product is an integrated product of two types of resin molded products of different colors that are molded with the same molding die. It can be applied to two-tone two-color molded products such as trunk trim.

  A molding device used for molding a two-color molded product is a molding device that molds a two-color molded product obtained by joining and integrating a plurality of resin molded products. The upper and lower molds that can be opened and the lower mold are arranged, and when molding a resin molded product on one side, it rises until it comes into contact with the mold surface of the molding upper mold and separates the two cavities, and the other side When the resin molded product is molded, it is configured by a partition plate that is lowered to communicate two cavities, and an expansion / contraction tube that supports the partition plate so that it can be moved up and down by a predetermined stroke.

  Therefore, according to the present invention, after the upper and lower molds are clamped, the expansion / contraction tube is filled with fluid from the fluid supply system, and the expansion / contraction tube is inflated. The partition plate is raised until it comes into contact with the mold surface of the upper mold. In this state, the first cavity and the second cavity are partitioned by the partition plate in this state, and if the molten resin is injected and filled into the first cavity, the resin molded product on one side can be accurately molded. Can do.

  Next, after molding the resin molded product on one side, if the fluid in the expansion / contraction tube in the expanded state is discharged from the fluid discharge system provided at the other end of the expansion / contraction tube, the expansion / contraction tube is contracted As a result, the partition plate is lowered, whereby the end of the resin molded product on one side and the second cavity communicate with each other. Then, the resin molded product on the other side is molded so as to be integrated with the resin molded product on one side by injection-filling the molten resin into the second cavity.

  As described above, the fluid is supplied to or discharged from the expansion / contraction tube to control the tube to be in an expanded / contracted state, so that the partition plate is moved up and down. In addition to simplification, since it is only necessary to secure a space for accommodating the expansion / contraction tube, it is possible to increase the degree of freedom in designing and processing the mold.

  Next, in a preferred embodiment of the present invention, the partition plate arranged in the lower mold is composed of a plurality of divided plates divided along the longitudinal direction corresponding to the shape of the cavity. Is characterized in that a dedicated expansion / contraction tube is provided corresponding to the cavity shape by varying the lifting / lowering stroke of each divided plate.

  In the molding apparatus used in the above embodiment, the partition plate is composed of a plurality of divided plates divided in the longitudinal direction corresponding to the shape of the cavity, and each divided plate is supported by a corresponding expansion / contraction tube. The up-and-down stroke of each divided plate is variable.

  And according to this embodiment, for example, the partition plate is divided into a plurality of blocks between the general portion and the slope portion of the product, and the vertical stroke is varied in the adjacent divided plates, The plate thickness of the slope portion can be set uniformly.

  As described above, according to the molding method and molding apparatus for a two-color molded product according to the present invention, an expansion / contraction tube is used as a drive mechanism for a partition plate that communicates a cavity with each other. Compared to a hydraulic cylinder, control is simpler, and the degree of freedom in designing and machining the mold can be improved.

  Furthermore, according to the molding method and molding apparatus for a two-color molded product according to the present invention, if the partition plate is composed of a plurality of divided plates and each divided plate is controlled by a corresponding expansion / contraction tube, In the conventional integrated partition plate, it has been difficult to form the thickness of the general portion and the slope portion uniformly, but the thickness of the general portion and the slope portion can be formed uniformly, and the molding accuracy can be improved. It has the effect.

  Hereinafter, specific embodiments of a molding method and a molding apparatus for a two-color molded product according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the gist of the present invention is as described in the claims, and the contents of the embodiments described below are merely examples of the present invention.

  FIGS. 1 to 14 show an embodiment of the present invention. FIG. 1 is a front view showing a door trim formed by the method of the present invention, FIG. 2 is a sectional view showing the structure of the door trim, and FIG. FIG. 4 is an explanatory diagram showing a schematic configuration of the molding apparatus according to the invention, FIG. 4 is an explanatory diagram showing a configuration of the partition plate in the molding apparatus, and FIGS. 5 and 6 show a configuration of the partition plate and the expansion / contraction tube in the molding apparatus. FIG. 5 is an explanatory view showing an expanded state of the tube, and FIG. 6 is an explanatory view showing a contracted state of the tube. Further, FIG. 7 to FIG. 9 are explanatory diagrams showing the molding process of the resin molded product on one side in the method of the present invention, and FIG. 10 to FIG. 12 are explanatory diagrams showing the molding process of the resin molded product on the other side in the method of the present invention. FIG. 13, FIG. 13 and FIG. 14 are explanatory views showing modifications of the partition plate.

  In FIG. 1 and FIG. 2, the automobile door trim 10 is composed of an upper and lower divided body of a door trim upper 20 and a door trim lower 30, and a parting line 11 is set between the door trim upper 20 and the door trim lower 30. Has been. Furthermore, the door trim upper 20 and the door trim lower 30 are made of resin-molded products having different colors so that the accent effect on the appearance can be emphasized, and the product surface is drawn from the mold surface of the molding die described later. Has been transcribed. The door trim 10 is provided with various accessory parts, for example, an inside handle unit 21 is attached to the door trim upper 20, and an armrest 22 is formed above the parting line 11 for an occupant to rest on his / her elbow.

  On the other hand, a door pocket opening 31 is formed in the door trim lower 30, and a speaker grill 32 is provided integrally or separately with the door trim lower 30 on the front side of the door pocket opening 31. In FIG. 2, reference numeral 33 denotes a pocket back cover, and reference numeral 34 denotes a door panel. Further, the left and right side edges of the door trim 10 are provided with a sloped portion 10b having a vertical wall flange shape with respect to the general portion 10a in order to give the door trim 10 a texture. And in this invention, although the slope part 10b is extended in the up-down direction of the door trim 10, conventionally thickness variation has arisen between the general part 10a and the slope part 10b in the location corresponding to the parting line 11. In the present invention, the thickness of both the general portion 10a and the slope portion 10b can be set uniformly even at the terminal portion of the parting line 11.

  Next, the configuration of the molding apparatus 40 used in the method for molding a two-color molded product according to the present invention will be described with reference to FIGS. The molding apparatus 40 employs an injection molding method, and a molding upper mold 50 that is a movable side and a molding lower mold 60 that is a fixed side are provided so as to be capable of mutual clamping and mold opening. The lower mold 60 is continuously provided with injection machines 61a and 61b for supplying the material of the door trim upper 20 and the door trim lower 30 and divides the cavities C1 and C2 of the door trim upper 20 and the door trim lower 30. A partition plate 70 and an expansion / contraction tube 80 for driving and controlling the partition plate 70 are accommodated.

  More specifically, the molding upper die 50 has a cavity surface that matches the product shape of the door trim 10, and the molding upper die 50 moves up and down by a predetermined stroke by the lifting and lowering drive of the lifting cylinder 51. The mold 60 is clamped and opened.

  On the other hand, the molding lower mold 60 is connected to the two injection machines 61a and 61b as described above, and is molded as a resin passage for the molten resins M1 and M2 supplied from the two injection machines 61a and 61b. The lower mold 60 is provided with manifolds 62a and 62b and gates 63a and 63b, respectively. That is, in order to mold the door trim upper 20, the molten resin M1 is injected and filled into the first cavity C1 from the injector 61a through the manifold 62a and the gate 63a, and the door trim upper 20 is molded into a required shape. The molten resin M2 is injected and filled into the second cavity C2 from the injector 61b through the manifold 62b and the gate 63b, and the door trim lower 30 is formed into a required shape.

  In the molding apparatus 40 according to the present invention, the partition plate 70 is placed and supported on the expansion / contraction tube 80 on the molding lower mold 60 side so as to partition the first cavity C1 and the second cavity C2. ing. 4A shows the expanded state of the expansion / contraction tube 80, and FIG. 4B shows the contraction state of the expansion / contraction tube 80. FIG. That is, the expansion / contraction tube 80 is made of a soft material such as fluorine rubber or silicon rubber, and has a tube diameter of 10 to 30 mm and a tube thickness of 1 to 8 mm. Although not shown in FIG. One end is connected to a fluid supply system, the other end is connected to a fluid discharge system, and a fluid selected from a gas such as air, gas, or a liquid such as oil is supplied or discharged into the expansion / contraction tube It is controlled so that 80 can take an expanded state or a contracted state as appropriate. Then, as shown in FIG. 4A, when the expansion / contraction tube 80 is in the expanded state, the partition plate 70 is lifted upward, and the partition plate 70 is lifted until it seals on the mold surface of the molding upper mold 50. Is done. When the expansion / contraction tube 80 is in a contracted state, the partition plate 70 is pulled downward by the tension coil spring 71 and is inserted into the housing groove portion 64 of the lower molding die 60. The first cavity C1 is controlled to communicate with each other. In order for the expansion / contraction tube 80 to effectively raise and lower the partition plate 70, the groove width of the housing groove portion 64 is preferably set to be relatively narrow. Further, instead of the tension coil spring 71, the partition plate 70 may be urged downward by a pressing spring.

  As described above, according to the molding apparatus 40 of the present invention, the partition plate 70 is controlled by supplying or discharging a fluid into or from the expansion / contraction tube 80 so that the expansion / contraction tube 80 is in an expanded state or a contracted state. Since it is configured to control and raise and lower the partition plate 70, the structure is simpler than that of a conventional hydraulic cylinder, a large space is not required for the molding die, and the design freedom and processing of the die The degree of freedom can be increased.

  Further, in this embodiment, further improvements are made. As shown in FIGS. 5 and 6, the partition plate 70 is divided into three sections, that is, partitions corresponding to the general portion 10 a and the slope portions 10 b on both sides of the door trim 10. The plate 70 is composed of three divided plates, that is, divided plates 70a, 70b, and 70c, and each expansion / contraction tube 80 is also composed of divided tubes 80a, 80b, and 80c. The divided tubes 80a, 80b, and 80c are connected to a fluid supply system 81 and a fluid discharge system 82, respectively. FIG. 6 shows that the divided plates 70b and 70c corresponding to the left and right slope portions 10b have different expansion coefficients of the divided tubes 80a, 80b and 80c, respectively, compared to the divided plate 70a corresponding to the general portion 10a. Thus, the raising / lowering stroke of the divided plates 70b and 70c on both sides is set larger than the raising / lowering stroke of the central dividing plate 70a. Therefore, in the door trim 10, it is possible to ensure a substantially uniform thickness for both the general portion 10 a and the slope portion 10 b at the left and right edge portions of the parting line 11.

  Next, a method for forming the door trim 10 will be described with reference to FIGS. FIGS. 7 to 9 show the molding process of the door trim upper 20 respectively. In the molding apparatus 40, the upper and lower molds 50 and 60 are in a clamped state, and as shown in FIG. Is filled with fluid, and the expansion / contraction tube 80 is in an expanded state, and the partition plate 70 supported thereon is raised until it abuts against the mold surface of the molding upper mold 50, and in this state, the injection machine The molten resin M1 is supplied from 61a, the molten resin M1 is injected and filled into the first cavity C1 through the manifold 62a and the gate 63a, and the door trim upper 20 is formed into a required shape. At this time, the relationship between the divided plates 70a and 70b of the partition plate 70 is that, as shown in FIG. 9, the divided tubes 80a and 80b are in an expanded state, and the corresponding divided plates 70a and 70b are the molds of the upper mold 50, respectively. It is in contact with the surface. The above is the molding process of the door trim upper 20.

  Next, FIG. 10 to FIG. 12 show the molding process of the door trim lower 30, and the mold upper and lower molds 50 and 60 are kept in the clamped state. As shown in FIG. When the fluid is discharged to the outside through the fluid discharge system 82, the expansion / contraction tube 80 is in a contracted state. Therefore, the partition plate 70 is lowered by the spring pressure of the tension coil spring 71 (not shown), and the end of the door trim upper 20. The second cavity C2 communicates with the second cavity C2. Then, the molten resin M2 is injected and filled into the second cavity C2 through the manifold 62b and the gate 63b through the injector 61b, and the door trim lower 30 is formed into a required shape integrally with the door trim upper 20.

  As shown in FIG. 12, the partition plate 70 is composed of divided plates 70a, 70b, and 70c. The divided plate 70a corresponding to the general portion 10a and the divided plate 70b corresponding to the inclined surface portion 10b correspond to each other. When the divided tubes 80a and 80b contract, the descending stroke of the divided plate 70b corresponding to the inclined surface portion 10b is set larger than the divided plate 70a corresponding to the general portion 10a, so that the cavity C3 corresponding to the general portion 10a. The appropriate thickness of the cavity C4 corresponding to the slope portion 10b is maintained, the same thickness as that of the general portion 10a can be secured for the slope portion 10b, and the rigidity of the slope portion 10b is appropriately maintained. And the molding accuracy can be improved.

  The embodiment described above uses the expansion / contraction tube 80 as a control mechanism for the partition plate 70, thereby simplifying the structure as compared with the conventional hydraulic cylinder drive mechanism and is advantageous in terms of mold space. In addition to the above advantages, by adopting a divided structure as the partition plate 70 and the expansion / contraction tube 80, the thickness of the general portion 10a and the slope portion 10b can be set uniformly, and the rigidity of the slope portion 10b is reduced. In addition, there is an effect that the conventional defect that the thickness of the general portion 10a is excessively increased and the weight is increased can be effectively solved.

  Next, as in the modification shown in FIGS. 13 and 14, an integral type can be used as the structure of the partition plate 70 and the expansion / contraction tube 80 arranged in the lower mold 60. That is, FIG. 13 shows the expanded state of the expansion / contraction tube 80, and the partition plate 70 is raised until it comes into contact with the mold surface of the upper mold 50 due to the expansion state of the expansion / contraction tube 80. Further, as shown in FIG. 14, when the expansion / contraction tube 80 is in a contracted state, the partition plate 70 is lowered to communicate between the cavities, and the expansion / contraction tube 80 is partitioned instead of the hydraulic cylinder. By adopting it as a drive mechanism for the plate 70, there is an advantage that the structure can be simplified. 13 and 14 show the mounting structure of the expansion / contraction tube 80 and the relationship between the fluid supply system 81 and the fluid discharge system 82. The expansion / contraction tube 80 is located near the terminal. May be held by a holding bracket 90 and fixed with a screw (not shown) to the lower mold 60, and the fluid supply system 81 connected to one end of the expansion / contraction tube 80 may be a blower or the like. There is a vacuum pump or the like as the fluid discharge system 82 connected to the other end.

  In the embodiment described above, the present invention is applied to the molding method and molding apparatus of the door trim 10 composed of the upper and lower divided parts of the door trim upper 20 and the door trim lower 30. However, in addition to the door trim 10, two-tone two-color molding is applied. The present invention can be applied to molding methods and molding apparatuses for general products. Furthermore, as a modified example of the door trim upper 20, a resin molded product with a skin can be applied, and it can also be applied to the form of a three-color molded product divided into three in the vertical direction such as a trim upper, a trim center, and a trim lower. it can.

It is a front view which shows the door trim for motor vehicles manufactured by applying the molding method of the two-color molded product which concerns on this invention. It is the II-II sectional view taken on the line in FIG. It is a schematic diagram which shows the shaping | molding apparatus used for shaping | molding of the door trim for motor vehicles shown in FIG. It is sectional drawing which shows the structure of the partition plate in the shaping | molding apparatus shown in FIG. 3, and an expansion / contraction tube, FIG.4 (a) is explanatory drawing which shows the expansion state of a tube, FIG.4 (b) shows the contraction state of a tube. It is explanatory drawing shown. FIG. 5 is a cross-sectional view taken along line V-V in FIG. It is the VI-VI sectional view taken on the line in FIG.4 (b). It is explanatory drawing which shows the molding process of the door trim upper in the molding method of the door trim to which the molding method of the two-color molded product which concerns on this invention is applied. It is explanatory drawing which shows the positional relationship of the partition plate in the formation process of a door trim upper. It is explanatory drawing which shows the terminal part of the partition plate in the formation process of a door trim upper. It is explanatory drawing which shows the molding process of the door trim lower in the molding method of the door trim to which the molding method of the two-color molded product which concerns on this invention is applied. It is explanatory drawing which shows the positional relationship of the partition plate in the formation process of the door trim lower shown in FIG. It is explanatory drawing which shows the terminal part of the partition plate in the formation process of a door trim lower. It is explanatory drawing which shows the modification of the partition plate used for this invention apparatus, and shows the state at the time of the raise of a partition plate. The modification of the partition plate used for this invention apparatus is shown, and it is explanatory drawing which shows the state at the time of the fall of a partition plate. It is a front view which shows the conventional door trim. It is explanatory drawing which shows the structure of the shaping die which shape | molds the conventional door trim. It is explanatory drawing which shows operation | movement of the partition plate used for shaping | molding of the conventional door trim. It is explanatory drawing which shows the state of the terminal part corresponding to the cavity slope part of the partition plate used for shaping | molding of the conventional door trim.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Automotive door trim 10a General part 10b Slope part 11 Parting line 20 Door trim upper 30 Door trim lower 40 Molding apparatus 50 Molding upper mold 51 Lifting cylinder 60 Molding lower mold 61a, 61b Injection machine 62a, 62b Manifold 63a, 63b Gate 64 Housing groove part 70 Partition plate 70a, 70b, 70c Split plate 71 Tension coil spring 80 Expansion / contraction tube 80a, 80b, 80c Split tube 81 Fluid supply system 82 Fluid discharge system C1 First cavity (for door trim upper molding)
C2 2nd cavity (for door trim lower molding)
M1, M2 molten resin

Claims (4)

The cavity (C) of the molding upper and lower molds (50, 60) is partitioned into two cavities (C1, C2) by raising the partition plate (70), and the molten resin (M1) is placed in the first cavity (C1). And then molding the resin molded product (20) on one side, and then lowering the partition plate (70) to allow communication between the cavities (C1, C2), and in the second cavity (C2). In the molding method of the two-color molded product (10), in which the molten resin (M2) is injected and filled, and the resin molded product (30) on the other side is integrated with the resin molded product (20) on the one side.
The partition plate (70) is supported on the upper surface of the expansion / contraction tube (80) accommodated in the accommodation groove (64) of the molded lower mold (60), and is expanded from the fluid supply system (81) to the expansion / contraction tube ( 80) The two cavities (80) are filled by filling the fluid and expanding the expansion / contraction tube (80) until the partition plate (70) is sealed with the mold surface of the molding upper mold (50). Partitioning C1, C2), injecting and filling molten resin (M1) into the first cavity (C1), and molding one resin molded product (20);
By discharging the fluid from the expansion / contraction tube (80) in the expanded state to the outside through the fluid discharge system (82) and contracting the expansion / contraction tube (80), the partition plate (70) is lowered. After the two cavities (C1, C2) are communicated, the second cavity (C2) is injected and filled with the molten resin (M2), and the other side is integrally formed with the one side resin molded product (20). Molding the resin molded product (30);
A method for forming a two-color molded product, comprising:   The partition plate (70) arranged in the lower mold (60) is composed of a plurality of divided plates (70a, 70b, 70c) divided along the longitudinal direction corresponding to the shape of the cavity (C). Each of the divided plates (70a, 70b, 70c) is provided with a corresponding divided tube (80a, 80b, 80c), and the cavity can be changed by changing the vertical stroke of each divided plate (70a, 70b, 70c). (C) The method for forming a two-color molded product according to claim 1, wherein the method corresponds to a shape.   A molding device (40) for molding a two-color molded product (10) formed by joining and integrating a plurality of resin molded products (20, 30). The molding device (40) clamps each other and opens the mold. Possible molding upper and lower molds (50, 60) and a lower molding mold (60) are arranged until the resin mold product (20) on one side is abutted against the mold surface of the molding upper mold (50). A partition plate (70) that rises to partition the two cavities (C1, C2) and lowers to communicate the two cavities (C1, C2) when molding the other resin molded product (30) And an expansion / contraction tube (80) that supports the partition plate (70) so as to be movable up and down by a predetermined stroke.   The partition plate (70) includes a plurality of divided plates (70a, 70b, 70c) divided along the longitudinal direction corresponding to the shape of the cavity (C), and each of the divided plates (70a, 70b, 70c). 4) are respectively supported by corresponding dedicated divided tubes (80a, 80b, 80c), and the vertical stroke of each divided plate (70a, 70b, 70c) is variable. Color molding product molding equipment.

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