Double-color forming mold and forming method thereof

Abstract

The double-color forming mold comprises a one-color forming mold and a two-color forming mold, the one-color forming mold comprises a first female mold and a first male mold, a parting cavity of a one-color product is formed after the first female mold and the first male mold are assembled, a first feeding port is formed in the upper surface of the first female mold, and a second feeding port is formed in the lower surface of the first male mold. The two-color forming mold comprises a second female mold and a second male mold, the first male mold and the second male mold are the same in structure, a second female mold plate is arranged in the second female mold, male mold plates are arranged in the second male mold and the first male mold, a horizontal runner is arranged on the second female mold plate, and the horizontal runner is communicated with the second female mold. A plurality of horizontal runners are formed in the male mold plate, the horizontal runners are transversely communicated with the two sides of the main mold cavity, a plurality of reverse buckling cavities are formed in the male mold plate and located below the horizontal runners, the reverse buckling cavities are communicated with the horizontal runners, and in the structure, due to the arrangement of the horizontal feeding runners and the reverse buckling cavities, it can be guaranteed that a product is left in the male mold, and the integrity of the product is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of injection molding, and in particular to a two-color molding mold and a molding method thereof. Background Art

[0002] A two-color mold is a mold that uses two plastic materials to be molded on the same injection molding machine. The molding process is divided into two steps, but the product is only ejected once. This molding process is also called double-material injection molding, which is usually completed with a set of molds and requires a special two-color injection molding machine.

[0003] At present, when traditional two-color molds are used for production, the one-color product will remain in the mother mold and the two-color product will remain in the male mold. In addition, since the one-color product is on the appearance side and the feed port is located on the mother mold side, there will be residual glue points and air marks on the surface of the produced product, thus affecting the appearance of the product. Summary of the invention

[0004] The technical problem solved by the invention is to provide a two-color molding die that ensures a good product appearance.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a two-color molding mold, including a one-color molding mold and a two-color molding mold, the one-color molding mold includes a first female mold and a first male mold, the first female mold and the first male mold are molded together to form a parting cavity for a one-color product, the upper surface of the first female mold is provided with a first feed port, and the first feed port is connected to the parting cavity;

[0006] The two-color molding mold includes a second female mold and a second male mold. The first male mold and the second male mold have the same structure. A second female mold is arranged in the second female mold. Male molds are arranged in the second male mold and the first male mold. A left slider structure and a right slider structure are arranged on both sides between the second female mold and the male mold. When the second female mold and the male mold are molded together, the second female mold, the male mold, the left slider structure and the right slider structure jointly form the overall cavity of the product. A horizontal flow channel is arranged on the second female mold, and the horizontal flow channel is horizontally connected to both sides of the overall cavity. A plurality of undercut cavities are arranged on the male mold vertically below the horizontal flow channel, and the undercut cavities are connected to the horizontal flow channel. A second feed inlet is arranged on the upper surface of the second female mold, and the second feed inlet is connected to the horizontal flow channel through a feeding flow channel.

[0007] Furthermore, an ejector plate is provided in the first male mold and the second male mold, and the ejector plate is located on the side of the male mold plate away from the second female mold plate. A plurality of ejectors are provided on the male mold plate, and the ejectors are located on one side of the undercut cavity and the horizontal flow channel. When the ejector plate moves toward the direction of the male mold plate, the ejector pins can extend into the undercut cavity and the horizontal flow channel.

[0008] Furthermore, a first mother mold plate is provided in the first mother mold, a first first draw-in son extending into the parting cavity is provided in the first mother mold, a feed flow channel is provided at the center of the first first draw-in son, one end of the feed flow channel is connected with the parting cavity, and the other end of the feed flow channel is connected with the feed inlet;

[0009] The first female mold includes an upper mold assembly, which is located on the side of the first female mold away from the first male mold. The first first draw-in sub is connected to the upper mold assembly at one end away from the parting cavity. The upper mold assembly and the first female mold are fixedly connected by bolts, and the bolts include a flange portion. A positioning cavity for the flange portion to move up and down is provided in the upper mold assembly.

[0010] Furthermore, a plurality of annular grooves are arranged on one end of the first draw-in member extending into the mold splitting cavity.

[0011] Furthermore, the left slider structure and the right slider structure both include a first driving block, and also include a slider extending into the main cavity, the slider is fixedly connected to the first driving block, an inclined slide is provided in the first driving block, a second driving block is provided in the second female mold, an inclined block cooperating with the inclined slide is provided at the lower part of the second driving block, and the inclined block can extend into the inclined slide, when the second female mold drives the second driving block to move away from the first male mold or the second male mold, the inclined block drives the first driving block to move outward horizontally, and when the second female mold drives the second driving block to move toward the first male mold or the second male mold, the inclined block drives the first driving block to move toward the main cavity.

[0012] Furthermore, a positioning groove is arranged on the female mold plate to be aligned with the inclined block, and when the first male mold or the second male mold is molded with the second female mold, the bottom end of the inclined block is located in the positioning groove.

[0013] Furthermore, a guide channel for the first driving block to move laterally is provided between the first male mold or the second male mold and the second female mold.

[0014] Furthermore, there are a plurality of main cavities, and the horizontal flow channel is an S-shaped structure flow channel, which passes through two adjacent main cavities in sequence, and the S-shaped structure flow channel is horizontally connected to each main cavity.

[0015] Furthermore, first guide posts are arranged at four corners of the first female mold, and first guide holes cooperating with the first guide posts are arranged at four corners of the first male mold;

[0016] Second guide posts are arranged at the four corners of the second female mold, and second guide holes matching with the second guide posts are arranged at the four corners of the second male mold.

[0017] The present invention also discloses a two-color product injection molding method, comprising the two-color molding mold described above, and comprising the following steps:

[0018] S100: The first female mold and the first male mold are molded together, and the first color material is injected into the parting cavity through the inlet channel in the first draw-in mold. After the injection is completed, the mold is cooled and formed;

[0019] S200: the first female mold and the first male mold are opened, the first first drawer is away from the parting cavity, the first color product is located in the first male mold, and the first male mold and the second male mold are rotated and exchanged;

[0020] S300: The second male mold is molded together with the first female mold and the step of S100 is repeated. The first male mold is molded together with the second female mold, and the second color material is injected into the horizontal flow channel through the second feed port, and flows into the main cavity and the undercut cavity through the horizontal flow channel. After the injection is completed, the second color material is cooled and formed;

[0021] S400: The first male mold and the second female mold are opened, and the left slider structure and the right slider structure move outward at the same time, the molded product remains in the first male mold, and the ejector pin extends out of the horizontal flow channel to eject the product and the connection waste in the horizontal flow channel together.

[0022] The beneficial effects of the present invention are:

[0023] 1. In this structure, the feed channel of the single-color product is set in the first draw-in, and the connecting bolts and the positioning cavity are set at the same time, so that before the single-color product is opened, the first draw-in will be the first to remove the material, and then one side of the product will remain in the public mold, thereby reducing the residual glue points and air marks on the surface of one side of the product.

[0024] 2. In this structure, the horizontal feed channel and the undercut cavity are arranged to ensure that the product is retained in the male mold and the integrity of the product is guaranteed.

[0025] 3. In this structure, the ejector plate is arranged to extend the horizontal flow channel, so that the horizontal flow channel can be ejected and the product can be taken out at the same time. At the same time, the ejector pin does not need to contact the product, thereby reducing the damage to the product caused by the ejector pin.

[0026] 4. In this structure, a plurality of annular grooves are provided at one end of the first drawer extending into the parting cavity, so that an undercut is added to the inner side of one side of the product, thereby increasing the bonding force between the one-color product and the two-color product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a two-color molding die according to an embodiment of the present application.

[0028] Figure 2 This is a transverse cross-sectional view of a single-color molding mold of a double-color molding mold according to an embodiment of the present application.

[0029] Figure 3 This is a transverse cross-sectional view of a two-color molding mold of an embodiment of the present application.

[0030] Figure 4 This is a longitudinal cross-sectional view of a two-color molding mold of an embodiment of the present application.

[0031] Figure 5 This is a schematic structural diagram of the first drawer of the two-color molding mold according to an embodiment of the present application.

[0032] Figure 6 This is a longitudinal cross-sectional view of a bolt in one color molding mold of a two-color molding mold in an embodiment of the present application.

[0033] Figure 7 This is a schematic structural diagram of a horizontal flow channel in a two-color molding mold of an embodiment of the present application.

[0034] Marked in the figure are: the first female mold 1, the first feeding port 101, the parting cavity 102, the first female template 103, the first draw-in sub-104, the feeding channel 105, the upper template assembly 106, the bolt 107, the positioning cavity 108, the annular groove 109, the first male mold 2, the male template 201, the undercut cavity 202, the ejector plate 203, the ejector 204, the second female mold 3, the second female template 301, the horizontal flow channel 302, the second feeding port 303, the second male mold 4, the left slider structure 5, the first driving block 501, the slider 502, the oblique slide 503, the second driving block 504, the positioning groove 505, the right slider structure 6, and the total cavity 7. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] like Figure 1 As shown, the embodiment of the present application discloses a two-color molding mold, including a one-color molding mold and a two-color molding mold, the one-color molding mold includes a first female mold 1 and a first male mold 2, the first female mold 1 and the first male mold 2 are molded together to form a parting cavity 102 of a one-color product, the first female mold 1 is provided with a first feed port 101 on the upper surface, and the first feed port 101 is connected to the parting cavity 102;

[0037] The two-color molding mold includes a second female mold 3 and a second male mold 4. The first male mold 2 and the second male mold 4 have the same structure. A second female mold 3 is provided with a second female mold plate 301. The second male mold 4 and the first male mold 2 are both provided with a male mold plate 201. A left slider structure 5 and a right slider structure 6 are respectively provided on both sides between the second female mold plate 301 and the male mold plate 201. When the second female mold plate 301 and the male mold plate 201 are molded together, the second female mold plate 301, the male mold plate 201, the left slider structure 5 and the right slider structure 6 jointly form a total mold cavity 7 of the product. A horizontal flow channel 302 is provided on the second female mold plate 301. The horizontal flow channel 302 is horizontally connected to both sides of the total mold cavity 7. A plurality of undercut cavities 202 are provided on the male mold plate 201 vertically below the horizontal flow channel 302. The undercut cavities 202 are connected to the horizontal flow channel 302. A second feed port 303 is provided on the upper surface of the second female mold 3. The second feed port 303 is connected to the horizontal flow channel 302 through a feeding flow channel.

[0038] Specifically, what needs to be explained is that in this product, the single-color product is made of POM material, and the two-color product is made of PC material.

[0039] Specifically, during operation, the first female mold 1 and the first male mold 2 are molded together, and the first color material is injected into the sub-mold cavity 102 through the first feeding port 101. After the injection molding is completed, it is cooled and formed. Then, the first female mold 1 and the first male mold 2 are opened, and the first color product is located in the first male mold 2. The first male mold 2 and the second male mold 4 rotate and exchange positions. Then, the first male mold 2 and the second female mold 3 are molded together, and the second color material is injected into the horizontal flow channel 302 through the second feeding port 303, and flows into the main cavity 7 and the undercut cavity 202 through the horizontal flow channel 302. After the injection molding is completed, it is cooled and formed. Then, the first male mold 2 and the second female mold 3 are opened, and the left slider structure 5 and the right slider structure 6 move outward at the same time. Under the pull of the waste material in the horizontal flow channel and the undercut cavity 202, the molded product is left in the male mold, and then the subsequent demolding operation can be performed.

[0040] In this structure, the horizontal inlet channel 105 and the undercut cavity 202 are provided to hold the product, thereby ensuring that the product remains in the male mold and the integrity of the product is guaranteed.

[0041] In this embodiment, an ejector plate 203 is further provided in the first male mold 2 and the second male mold 4. The ejector plate 203 is located on the side of the male mold plate 201 away from the second female mold plate 301. A plurality of ejector pins 204 are provided on the male mold plate 201. The ejector pins 204 are located on one side of the undercut cavity 202 and the horizontal flow channel 302. When the ejector plate 203 moves toward the male mold plate 201, the ejector pins 204 can extend into the undercut cavity 202 and the horizontal flow channel 302.

[0042] Specifically, after the first male mold 2 and the second female mold 3 are opened, an external device drives the ejector plate 203 to move toward the main cavity 7, and multiple ejectors 204 simultaneously push out the two-color materials in the undercut cavity 202 and the horizontal flow channel 302, and bring the product out of the main cavity 7 together through the two-color materials in the undercut cavity 202 and the horizontal flow channel 302.

[0043] In this structure, the ejector plate 203 is arranged to extend the horizontal flow channel 302, so that the horizontal flow channel 302 can be ejected and the product can be taken out at the same time. At the same time, during the ejection process, the ejector pin 204 does not need to contact the product, thereby reducing the damage of the ejector pin 204 to the product.

[0044] In this embodiment, a first mother mold plate 103 is disposed in the first mother mold 1, a first first draw-in sub-piece 104 extending into the parting cavity 102 is disposed in the first mother mold 1, a material inlet channel 105 is disposed at the center of the first first draw-in sub-piece 104, one end of the material inlet channel 105 is connected to the parting cavity 102, and the other end of the material inlet channel 105 is connected to the material inlet;

[0045] The first female mold 1 includes an upper mold assembly 106, which is located on the side of the first female mold 103 away from the first male mold 2, and the first draw-in sub-104 is connected to the upper mold assembly 106 at one end away from the parting cavity 102. The upper mold assembly 106 and the first female mold 1 are fixedly connected by bolts 107, and the bolts 107 include a flange portion. A positioning cavity 108 is provided in the upper mold assembly 106 for the flange portion to move up and down.

[0046] Specifically, during the molding process of a single-color product, the single-color material enters the feed channel 105 from the feed port, and enters the parting cavity 102 from the feed channel. After the injection molding is completed, the single-color material is cooled and solidified in the parting cavity 102. After the single-color product is formed, the first female mold 1 and the first male mold 2 are separated. During the specific parting process, the upper mold assembly 106 first moves away from the first male mold 2. At the beginning of the movement, due to the setting of the positioning cavity 108, the flange portion of the bolt 107 will be The upper mold assembly 106 moves in the positioning cavity 108. At this time, only the upper mold assembly 106 moves, and the first upper mold does not move. When the upper mold assembly 106 moves, it will drive the first first draw-in sub 104 to move synchronously, so that the first first draw-in sub 104 can be forcibly separated from the adhesion end of the product. After moving for a distance, under the action of the bolt 107, the upper mold assembly 106 drives the first female mold plate 103 to move together, realizing the mold opening operation of the first female mold 1 and the first male mold 2. After the mold is opened, the same color product will remain in the male mold plate 201.

[0047] In this structure, the feed channel 105 of the single-color product is set in the first draw-in sub 104, and the connecting bolts 107 and the positioning cavity 108 are set at the same time, so that before the single-color product is opened, the first draw-in sub 104 will be the first to remove the material, and then one side of the product will remain in the public mold, thereby reducing the residual glue points and air marks on the surface of one side of the product.

[0048] In this embodiment, a plurality of annular grooves 109 are provided on one end of the first draw-in member 104 extending into the parting cavity 102 .

[0049] In this structure, by setting a plurality of annular grooves 109, a plurality of undercuts can be formed on the inner side of the one-color product. Therefore, when the two-color product is injection molded, the bonding force between the one-color product and the two-color product will be tightened. At the same time, since the plurality of undercuts are located on the inner side of the one-color product, the setting of the undercut structure will not affect the one-color appearance of the product, and thus will not affect the appearance of the product itself.

[0050] In this embodiment, the left slider structure 5 and the right slider structure 6 both include a first driving block 501, and also include a slider 502 extending into the main cavity 7, the slider 502 is fixedly connected to the first driving block 501, an inclined slide 503 is arranged in the first driving block 501, and a second driving block 504 is arranged in the second female mold 3, and an inclined block cooperating with the inclined slide 503 is arranged at the lower part of the second driving block 504, and the inclined block can extend into the inclined slide 503. When the second female mold 3 drives the second driving block 504 to move away from the first male mold 2 or the second male mold 4, the inclined block drives the first driving block 501 to move outward horizontally. When the second female mold 3 drives the second driving block 504 to move toward the first male mold 2 or the second male mold 4, the inclined block drives the first driving block 501 to move toward the main cavity 7.

[0051] Specifically, when two-color product molding is performed, the second female mold 3 and the second male mold 4 are molded together. During the mold closing process, the inclined block in the second drive block 504 extends into the inclined slide 503 of the first drive block 501, and drives the first drive block 501 to move toward the main cavity 7, so that the slider 502 extends into the main cavity 7 and constitutes a part of the main cavity 7. When the product injection molding is completed and the mold needs to be opened, the second female mold 3 drives the second drive block 504 to move away from the male mold plate 201. Under the joint action of the inclined block and the inclined slide 503, the first drive block 501 moves away from the main cavity 7, so that the slider 502 exits the main cavity 7, completing the entire mold opening operation.

[0052] The arrangement of the above structure enables the left slider structure 5 and the right slider structure 502 to achieve horizontal movement when performing mold opening and mold closing operations without the use of other external driving mechanisms, thereby making the structure of the mold simpler and easier to use.

[0053] In this embodiment, a positioning groove 505 is arranged on the female mold plate to align with the inclined block. When the first male mold 2 or the second male mold 4 is molded with the second female mold 3, the bottom end of the inclined block is located in the positioning groove 505.

[0054] In this structure, by setting the positioning groove 505 , the first driving block 501 can be positioned, thereby ensuring the accuracy of the movement of the slider 502 .

[0055] In this embodiment, a guide channel for the first driving block 501 to move laterally is provided between the first male mold 2 or the second male mold 4 and the second female mold 3 .

[0056] In this structure, by setting the guide channel, the first driving block 501 can only move horizontally along the guide channel, thereby ensuring the accuracy of the slider 502 when it moves into the main cavity 7.

[0057] In this embodiment, a plurality of main cavities 7 are provided, and the horizontal flow channel 302 is an S-shaped structure flow channel, which passes through two adjacent main cavities 7 in sequence, and the S-shaped structure flow channel is horizontally connected to each main cavity 7.

[0058] Specifically, through the setting of the above-mentioned structure, the S-shaped structural flow channel can be connected with multiple main cavities 7, so that the product and the waste material in the S-shaped structural flow channel are integrated, so that when the material is ejected later, the product can be ejected together with the waste material in the S-shaped structural flow channel, so that the product can be ejected more smoothly.

[0059] In this embodiment, first guide posts are disposed at the four corners of the first female mold 1, and first guide holes cooperating with the first guide posts are disposed at the four corners of the first male mold 2;

[0060] Second guide posts are disposed at the four corners of the second female mold 3 , and second guide holes matched with the second guide posts are disposed at the four corners of the second male mold 4 .

[0061] Specifically, the position of the first guide post in the first female mold 1 is exactly the same as the position of the second guide post in the second female mold 3, so that the first female mold 1 can be accurately molded with the first male mold 2 and the second male mold 4 respectively, and the second female mold 3 can be accurately molded with the first male mold 2 and the second male mold 4 respectively.

[0062] The present invention also discloses a two-color product injection molding method, comprising the two-color molding mold described above, and comprising the following steps:

[0063] S100: The first female mold 1 and the first male mold 2 are molded together, and the first color material is injected into the sub-mold cavity 102 through the inlet channel 105 in the first draw-in element 104. After the injection is completed, the material is cooled and formed;

[0064] S200: the first female mold 1 and the first male mold 2 are opened, the first drawer 104 is away from the parting cavity 102, the first color product is located in the first male mold 2, and the first male mold 2 and the second male mold 4 are rotated and exchanged;

[0065] S300: The second male mold 4 is molded together with the first female mold 1 and the step of S100 is repeated. The first male mold 2 is molded together with the second female mold 3, and the second color material is injected into the horizontal flow channel 302 through the second feed port 303, and flows into the main cavity 7 and the undercut cavity 202 through the horizontal flow channel 302. After the injection is completed, the second color material is cooled and formed;

[0066] S400: The first male mold 2 and the second female mold 3 are opened, and the left slider structure 5 and the right slider structure 6 move outward at the same time, and the molded product remains in the first male mold 2. The ejector pin 204 extends out of the horizontal flow channel 302 to eject the product and the connection waste in the horizontal flow channel 302 together.

[0067] The method sets the feed channel 105 of the single-color product in the first draw-in sub 104, and sets the connecting bolts 107 and the positioning cavity 108, so that before the single-color product is opened, the first draw-in sub 104 will be the first to remove the material, and then one side of the product will remain in the public mold, thereby reducing the generation of residual glue points and air marks on the surface of one side of the product. At the same time, through the setting of the horizontal feed channel 105 and the undercut cavity 202, it can be ensured that the product remains in the public mold to ensure the integrity of the product.

[0068] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-color molding mold, characterized in that: The invention comprises a one-color molding mold and a two-color molding mold, wherein the one-color molding mold comprises a first female mold (1) and a first male mold (2), wherein the first female mold (1) and the first male mold (2) are combined to form a parting cavity (102) of a one-color product, and the upper surface of the first female mold (1) is provided with a first material inlet (101), and the first material inlet (101) is connected to the parting cavity (102); The two-color molding mold comprises a second female mold (3) and a second male mold (4); the first male mold (2) and the second male mold (4) have the same structure; a second female mold plate (301) is arranged in the second female mold (3); male mold plates (201) are arranged in the second male mold (4) and the first male mold (2); a left slider structure (5) and a right slider structure (6) are arranged on both sides between the second female mold plate (301) and the male mold plate (201); when the second female mold plate (301) and the male mold plate (201) are molded together, the second female mold plate (301), the male mold plate (201), and the left slider structure (5) and the right slider structure (6) are arranged on both sides between the second female mold plate (301) and the male mold plate (201). The structure (5) and the right slider structure (6) together form a main cavity (7) of the product; a horizontal flow channel (302) is arranged on the second mother template (301); the horizontal flow channel (302) is laterally connected to the two sides of the main cavity (7); a plurality of undercut cavities (202) are arranged on the male template (201) vertically below the horizontal flow channel (302); the undercut cavities (202) are connected to the horizontal flow channel (302); a second feed port (303) is arranged on the upper surface of the second mother mold (3); the second feed port (303) is connected to the horizontal flow channel (302) through a feeding channel.

2. The two-color molding die according to claim 1, characterized in that: An ejector plate (203) is also provided in the first male mold (2) and the second male mold (4). The ejector plate (203) is located on a side of the male mold plate (201) away from the second female mold plate (301). A plurality of ejector pins (204) are provided on the male mold plate (201). The ejector pins (204) are located on one side of the undercut cavity (202) and the horizontal flow channel (302). When the ejector plate (203) moves toward the male mold plate (201), the ejector pins (204) can extend into the undercut cavity (202) and the horizontal flow channel (302).

3. The two-color molding die according to claim 1, characterized in that: A first mother mold plate (103) is arranged in the first mother mold (1), a first draw-in member (104) extending into the parting cavity (102) is arranged in the first mother mold (1), a material inlet channel (105) is arranged at the center of the first draw-in member (104), one end of the material inlet channel (105) is connected to the parting cavity (102), and the other end of the material inlet channel (105) is connected to the material inlet; The first female mold (1) comprises an upper mold assembly (106), wherein the upper mold assembly (106) is located on a side of the first female mold (103) away from the first male mold (2), and the first draw-in sub-mold (104) is connected to the upper mold assembly (106) at one end away from the parting cavity (102). The upper mold assembly (106) and the first female mold (1) are fixedly connected by bolts (107), wherein the bolts (107) comprise a flange portion, and a positioning cavity (108) is provided in the upper mold assembly (106) for the flange portion to move up and down.

4. The two-color molding die according to claim 3, characterized in that: One end of the first draw-in member (104) extending into the parting cavity (102) is provided with a plurality of annular grooves (109).

5. The two-color molding die according to claim 3, characterized in that: The left slider structure (5) and the right slider structure (6) both include a first driving block (501), and also include a slider (502) extending into the main mold cavity (7), the slider (502) being fixedly connected to the first driving block (501), the first driving block (501) being provided with an oblique slideway (503), the second mother mold (3) being provided with a second driving block (504), the lower part of the second driving block (504) being provided with a The matching inclined block can extend into the inclined slideway (503). When the second female mold (3) drives the second driving block (504) to move away from the first male mold (2) or the second male mold (4), the inclined block drives the first driving block (501) to move outward horizontally. When the second female mold (3) drives the second driving block (504) to move toward the first male mold (2) or the second male mold (4), the inclined block drives the first driving block (501) to move toward the main cavity (7).

6. The two-color molding die according to claim 5, characterized in that: A positioning groove (505) is arranged on the female mold plate in alignment with the inclined block. When the first male mold (2) or the second male mold (4) is molded with the second female mold (3), the bottom end of the inclined block is located in the positioning groove (505).

7. The two-color molding die according to claim 6, characterized in that: A guide channel for the first driving block (501) to move laterally is provided between the first male mold (2) or the second male mold (4) and the second female mold (3).

8. The two-color molding die according to claim 1, characterized in that: The main mold cavity (7) is provided with a plurality of the horizontal flow channels (302) being S-shaped structure flow channels, the S-shaped structure flow channels sequentially passing through between two adjacent main mold cavities (7), and the S-shaped structure flow channels being horizontally connected to each main mold cavity (7).

9. The two-color molding die according to claim 1, characterized in that: The first female mold (1) is provided with first guide posts at four corners, and the first male mold (2) is provided with first guide holes matching the first guide posts at four corners; Second guide columns are arranged at the four corners of the second female mold (3), and second guide holes cooperating with the second guide columns are arranged at the four corners of the second male mold (4).

10. A two-color product injection molding method, comprising the two-color molding mold according to any one of claims 1 to 9, characterized in that: The steps include: S100: The first female mold (1) and the first male mold (2) are molded together, and the first color material is injected into the parting cavity (102) through the inlet channel (105) in the first draw-in element (104). After the injection molding is completed, the mold is cooled and formed; S200: the first female mold (1) and the first male mold (2) are opened, the first drawer (104) is moved away from the parting cavity (102), the first color product is located in the first male mold (2), and the first male mold (2) and the second male mold (4) are rotated and exchanged; S300: The second male mold (4) is molded together with the first female mold (1) and the step of S100 is repeated. The first male mold (2) is molded together with the second female mold (3), and the second color material is injected into the horizontal flow channel (302) through the second feed port (303), and flows into the main cavity (7) and the undercut cavity (202) through the horizontal flow channel (302). After the injection molding is completed, the molding is cooled; S400: The first male mold (2) and the second female mold (3) are opened, and at the same time, the left slider structure (5) and the right slider structure (6) move outward, and the molded product remains in the first male mold (2). The ejector pin (204) extends the horizontal flow channel (302) to eject the product and the connection waste in the horizontal flow channel (302) together.

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