A two-color injection molding mold

Abstract

The application relates to a double-color injection molding die, belonging to the technical field of plastic product production, which comprises a rotating base, a first male die, a second male die and an adjusting mechanism. The first male die is arranged on the rotating base, the second male die is arranged on the rotating base, a sliding body is slidably arranged on the die core of the first male die and the second male die, the sliding body slides towards the direction close to or far away from the center of the corresponding die core, the sliding body serves as part of the inner wall of a cavity during injection molding, a first forming part is arranged on the sliding body, a second forming part is slidably arranged on the first forming part, and the adjusting mechanism is used for adjusting the second forming part to slide towards the direction close to the first forming part and then adjusting the sliding body to move towards the direction far away from the center of the corresponding die core when the injection of the first male die or the second male die is completed and the die is retracted. The application has the effect that the die can be retracted from a plastic product with a groove structure on the inner wall of a side hole.

Description

Technical Field

[0001] This application relates to the field of plastic product manufacturing technology, and in particular to a two-color injection molding die. Background Technology

[0002] In the production of plastic products, two-color injection molds are often used to mold two different colors or types of plastic materials into a single plastic product in order to improve the performance of the plastic product.

[0003] In related technologies, two-color injection molding dies mainly include a rotating base, a fixed base, a first male mold, a second male mold, a first female mold, and a second female mold. The first and second male molds are mounted on the rotating base, while the first and second female molds are mounted on the fixed base. The first female mold is used for the first injection, and the second female mold is used for the second injection. During operation, the rotating base drives the first and second male molds to rotate 180°, which moves the product after the first injection to the position of the second female mold and closes the mold for the second injection. For producing plastic products with side holes on the sides, sliders are slidably mounted on the first and second male molds. The sliders have molding parts. During molding, the molding parts act as part of the cavity sidewall, allowing the plastic product to be wrapped around the molding parts. Then, during the demolding process after the second injection, the sliders on the corresponding male molds move away from the cavity until the molding parts detach from the plastic product. Finally, the ejection mechanism ejects the plastic product after the second injection, thus creating side holes on the sides of the molded product.

[0004] Currently, some plastic products require grooves to be formed on the inner wall of the side holes for easy assembly. However, the method of moving the slider away from the cavity is no longer suitable for demolding this type of structure. Therefore, there is an urgent need for a demolding method that can be applied to plastic products with grooves on the inner wall of the side holes. Summary of the Invention

[0005] In order to enable the demolding of plastic products with grooves on the inner wall of the side hole without damaging the structure of the molded product or the molding part, this application provides a two-color injection molding mold.

[0006] The technical solution for a two-color injection molding die provided in this application is as follows:

[0007] A two-color injection molding die, comprising:

[0008] Rotating seat;

[0009] The first male mold is mounted on the rotating seat;

[0010] The second male mold is mounted on a rotating base. Sliding bodies are slidably mounted on the cores of both the first and second male molds. The sliding bodies slide toward the center of the corresponding core or away from it. During injection molding, the sliding bodies serve as part of the inner sidewall of the cavity. A first forming part is mounted on the sliding body. A second forming part is slidably mounted on the first forming part. The second forming part slides toward the first forming part or away from it.

[0011] An adjustment mechanism is used to first adjust the second molding part to slide towards the first molding part and then adjust the sliding body to move away from the center of the corresponding mold core when the first or second mold is ejected after two injections.

[0012] Preferably, the two-color injection molding die further includes a fixed base, a first female mold, and a second female mold. Both the first and second female molds are mounted on the fixed base. The first female mold is used for a single injection operation, and the second female mold is used for a second injection operation. The adjusting mechanism includes a first adjusting block, a second adjusting block, a first mating pin, a first reset elastic element, and a transmission assembly. The first adjusting block is mounted on the first female mold. A mating groove is provided on the sliding body. The first adjusting block is used to engage with the mating groove on the sliding body. The side of the first adjusting block near the center of the first female mold has a first inclined surface. The first inclined surface is used to slide against the edge of the mating groove near the mold core to push the sliding body towards the center of the mold core. The second adjusting block is mounted on the second female mold. The side of the second adjusting block away from the center of the second female mold has a second inclined surface. The first mating pin corresponds one-to-one with the mating groove. The first mating pin slides... The first adjusting block is dynamically positioned within the corresponding mating groove. When the core of the first male mold or the second male mold is in the closed state with the second female mold, the first mating pin is located on the side of the second adjusting block away from the center of the core. The second inclined surface is used to slide against the first mating pin to push the sliding body to move towards the side away from the center of the core. The side of the second adjusting block near the center of the second female mold has a fifth inclined surface, which is parallel to the second inclined surface. The side of the second adjusting block has a third inclined surface, which is used to slide against the first mating pin to move the first mating pin away from the center of the corresponding mating groove. The first reset elastic element is used to push the first mating pin towards the center of the corresponding mating groove. The transmission component is used to first drive the second forming part towards the direction of the first forming part when the second adjusting block moves out of the mating groove, and then the second inclined surface abuts against the first mating pin to move the sliding body away from the center of the core.

[0013] Preferably, the sliding direction of the first mating pin is perpendicular to the sliding direction of the corresponding sliding body.

[0014] Preferably, the transmission assembly includes an adjusting seat, a second mating pin, a second reset elastic element, and a transmission element. The adjusting seat corresponds one-to-one with the first forming part. The adjusting seat is slidably disposed within the mating groove, and its sliding direction is parallel to the sliding direction of the corresponding sliding body. The adjusting seat is used to engage with either the first or second adjusting block to push the adjusting seat towards the center of the mold core via the first inclined surface. The second mating pin is slidably disposed on the adjusting seat, and its sliding direction is parallel to the sliding direction of the first mating pin. The second mating pin is used to engage with either the second or third inclined surface to resist... The second mating pin causes the adjusting seat to move away from the center of the mold core. The second reset elastic element is used to push the second mating pin to move closer to the center of the corresponding mating groove. The second mating pin is located on the side of the first mating pin away from the fixed seat. When the second mating pin abuts against the second inclined surface, the first mating pin disengages from the second inclined surface. When the first mating pin abuts against the second inclined surface, the second mating pin disengages from the second inclined surface. The transmission element is used to drive the second forming part to move when the adjusting seat slides. When the adjusting seat moves towards the center of the mold core, the second forming part moves away from the first forming part.

[0015] Preferably, the second adjusting block has a planar segment that connects with the second inclined surface. The planar segment is located on the side of the second inclined surface away from the rotating seat. When the second mating pin abuts against the second inclined surface, the first mating pin abuts against the planar segment.

[0016] Preferably, the transmission component includes a pull rod and a connecting rod. The pull rod is disposed on the adjusting seat and slides into the first forming part. One end of the connecting rod is hinged to the pull rod, and the other end is hinged to the second forming part. The second forming part is located on the side of the pull rod near the center of the mold core. The length direction of the connecting rod intersects the length direction of the pull rod.

[0017] Preferably, both the first male mold and the second male mold are provided with a first fixing member. The first fixing member is used to fix the sliding seat relative to the corresponding first male mold or second male mold when the second inclined surface is disengaged from the first mating pin. Both of the mating grooves are provided with a second fixing member. The second fixing member is used to fix the adjusting seat relative to the corresponding sliding body when the second inclined surface is disengaged from the second mating pin.

[0018] Preferably, both the first and second master molds are provided with limiting seats, each of which corresponds to a sliding body. Each limiting seat has a fourth inclined surface, which is used to abut against the side of the corresponding sliding body away from the center of the mold core.

[0019] Preferably, the two-color injection molding mold further includes a cooling system, which includes cooling pipes disposed within the sliding body. The sliding body is provided with an inlet channel and an outlet channel, both of which are connected to the cooling pipes. The inlet channel serves as the medium inlet, and the outlet channel serves as the medium outlet.

[0020] Preferably, the cooling system further includes an air passage disposed within the sliding body and extending into the first molding part. The first molding part has a sliding hole that slides with the second molding part. The air passage communicates with the sliding hole. When the side of the second molding part away from the center of the first molding part is aligned with the centerline of the air passage, the air passage communicates with the external space of the first molding part.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] During operation, the core of the first male mold or the second male mold is closed with the first female mold. At this time, the second molding part extends and is fixed to the desired position of the first molding part. Then, the first injection is performed. After the first injection is completed, the core of the first male mold or the second male mold with the product in the first injection moves away from the first female mold to demold. Then, the rotating seat is rotated 180 degrees to align the first male mold or the second male mold with the product in the first injection with the second female mold and close the mold. Then, the second injection is performed. After the second injection is completed, the plastic product is wrapped around the first molding part and the second molding part. During the demolding process, the adjustment mechanism first adjusts the second molding part to slide closer to the first molding part so that the second molding part is completely separated from the molded plastic product. Then, the sliding body is adjusted to move away from the center of the core so that the first molding part is separated from the molded plastic product. Finally, the ejection mechanism ejects the molded product completed by the second injection from the cavity and can be taken out. This method is suitable for demolding plastic products with grooved structures on the inner wall of the side hole, without damaging the structure of the molded product or the first and second molding parts. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application, mainly used to illustrate the mold closing state.

[0024] Figure 2 This is an exploded view of the overall structure of an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the overall structure of the first adjusting block and the sliding body in the embodiment of this application.

[0026] Figure 4 This is an exploded cross-sectional view of the overall structure of the first adjusting block and the sliding body in the embodiment of this application.

[0027] Figure 5This is an exploded cross-sectional view of the overall structure of the second adjusting block and the sliding body in the embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the structure between the second adjusting block and the adjusting seat when the second adjusting block and the sliding body are inserted and engaged in the embodiment of this application.

[0029] Figure 7 This is a cross-sectional view of the overall structure of the first molding part in the embodiment of this application.

[0030] Figure 8 This is an exploded view of the sliding body and cooling pipe structure in the embodiments of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Rotating seat; 2. First male mold; 3. Second male mold; 4. Sliding body; 41. Sliding seat; 42. Sliding block; 5. First molding part; 6. Second molding part; 7. Fixed seat; 8. First female mold; 9. Second female mold; 10. First adjusting block; 101. First inclined surface; 11. Second adjusting block; 111. Second inclined surface; 112. Fifth inclined surface; 113. Third inclined surface; 114. Planar section; 12. First mating pin; 13. Mating groove; 14. 15. Adjusting seat; 16. Second mating pin; 17. Pull rod; 18. Connecting rod; 19. Cooling pipe; 20. Inlet channel; 21. Outlet channel; 22. Air passage; 23. Sliding hole; 24. Limiting seat; 25. Fourth inclined surface; 26. Guide hole; 27. First spring; 28. Second spring; 29. ​​Vent hole; 30. Sealing body; 31. Sealing part; 32. Through hole; 33. Connecting hose; 34. Guide rail; 35. Third spring; 36. First notch; 37. Second notch. Detailed Implementation

[0032] The following combination Figures 1-8 This application will be described in further detail.

[0033] This application discloses a two-color injection molding die. (Refer to...) Figure 1 The two-color injection molding die includes a rotating base 1, a first male mold 2, a second male mold 3, a fixed base 7, a first female mold 8, a second female mold 9, and an adjustment mechanism. The rotating base 1 is mounted on the rotating mechanism of the machine body, and the fixed base 7 is fixedly mounted on the machine body. Specifically, the mounting methods of the rotating base 1 and the fixed base 7 are existing technologies in the field of two-color injection molds, and will not be elaborated here. The first male mold 2 and the second male mold 3 are both mounted on the rotating base 1, and the first female mold 8 and the second female mold 9 are both mounted on the fixed base 7. The first female mold 8 is used for the first injection operation, and the second female mold 9 is used for the second injection operation.

[0034] Reference Figure 2 and Figure 3The first male mold 2 and the second male mold 3 are both slidably provided with sliding bodies 4. The sliding bodies 4 slide toward or away from the center of the corresponding mold core. In this embodiment, four sliding bodies 4 are distributed along the four sides of the corresponding mold core. Specifically, each sliding body 4 includes a sliding seat 41 and a sliding block 42. The sliding seat 41 is slidably provided on the corresponding mold core. The sliding direction of the sliding seat 41 is perpendicular to the moving direction when the plastic product is ejected by the ejection mechanism. Further, the sliding direction of the sliding seat 41 is perpendicular to the side length of the corresponding side of the mold core. Each sliding seat 41 has guide seats (not shown in the figure) distributed on both opposite sides. The guide seats are fixed to the corresponding mold core by bolts. The setting of two guide seats can guide and limit the sliding of the sliding seat 41.

[0035] Reference Figure 2 and Figure 3 The sliding block 42 is fixed to the side of the corresponding sliding seat 41 near the center of the mold core by bolts. The side of the sliding block 42 near the center of the mold core serves as part of the inner sidewall of the injection molding cavity. The sliding block 42 in the sliding body 4 has a first molding part 5 integrally formed on the side near the center of the mold core. The first molding part 5 is used to be embedded in the plastic product to form a side hole in the sidewall of the molded product. The cross-section of the first molding part 5 is circular. In other embodiments, the cross-sectional shape of the first molding part 5 can be set according to the required shape of the side hole of the product.

[0036] Reference Figure 2 and Figure 3 In this embodiment, two first molding portions 5 are symmetrically distributed on each sliding block 42. In other embodiments, the number of first molding portions 5 can be set as needed. Further, a second molding portion 6 is slidably passed through the first molding portion 5. The second molding portion 6 slides toward or away from the first molding portion 5, and the sliding direction of the second molding portion 6 is perpendicular to the sliding direction of the corresponding sliding seat 41. The end of the second molding portion 6 extending out of the first molding portion 5 is used to be embedded in the plastic product to form a groove in the inner wall of the side hole of the plastic product. In this embodiment, two second molding portions 6 are symmetrically distributed on each first molding portion 5, and the cross-section of the second molding portion 6 is circular. In other embodiments, the number and shape of the second molding portions 6 on the first molding portion 5 can be set according to actual needs. The adjustment mechanism is used to adjust the second molding portion 6 to slide toward the first molding portion 5 and then adjust the sliding body 4 to move away from the center of the mold core when the first male mold 2 or the second male mold 3 is demolded after the second injection.

[0037] During operation, the core of the first male mold 2 or the second male mold 3 closes with the first female mold 8. At this time, the second molding part 6 extends and is fixed to the desired position of the first molding part 5. Then, the first injection is performed. After the first injection is completed, the core of the first male mold 2 or the second male mold 3 carrying the injected product moves away from the first female mold 8 for demolding. Then, the rotating seat 1 rotates 180 degrees to rotate the first male mold 2 or the second male mold 3 carrying the injected product to align with the second female mold 9 and close with the second female mold 9. Then, the second injection is performed. After the second injection is completed, the plastic product is now wrapped around the first female mold 8. In addition to molding part 5 and second molding part 6, during the demolding process, the second molding part 6 is first adjusted to slide towards the first molding part 5 by the adjustment mechanism, so that the second molding part 6 is completely separated from the molded plastic product. Then, the sliding body 4 is adjusted to move away from the center of the corresponding mold core, so that the first molding part 5 is separated from the molded plastic product. Then, the molded product after two injections can be ejected from the cavity by the ejection mechanism for easy removal. This method is suitable for demolding plastic products with grooved structures on the inner wall of the side hole, without damaging the structure of the molded product or the first molding part 5 and the second molding part 6.

[0038] Reference Figure 2 , Figure 3 and Figure 4 To facilitate the adjustment of the second molding part 6 towards the direction closer to the first molding part 5 and the adjustment of the sliding body 4 towards the direction away from the mold core center when the first male mold 2 or the second male mold 3 is ejected after the second shot, the adjustment mechanism includes a first adjusting block 10, a second adjusting block 11, a first mating pin 12, a first reset elastic element and a transmission assembly. The first adjusting block 10 is fixed on the first female mold 8. Each sliding seat 41 corresponds to two first adjusting blocks 10. The sliding seat 41 is provided with a mating groove 13, which corresponds one-to-one with the first adjusting block 10. The first adjusting block 10 is used to insert and engage with the corresponding mating groove 13 on the sliding seat 41. Specifically, the two mating grooves 13 are aligned with the positions of the two first molding parts 5 respectively.

[0039] Reference Figure 2 , Figure 3 and Figure 4Furthermore, to facilitate the movement of the sliding seat 41 and the sliding block 42 toward the center of the mold core, the first adjusting block 10 has a first inclined surface 101 on the side near the center of the first female mold 8. The distance from the first inclined surface 101 to the center of the first female mold 8 increases in the direction away from the first female mold 8. The cross-section of the end of the first adjusting block 10 near the first female mold 8 is rectangular, and the cross-section is adapted to the cross-section of the mating groove 13 so as to fully engage with the corresponding mating groove 13. The first inclined surface 101 is used to... The edge of the mating groove 13 near the mold core slides and abuts to push the sliding body 4 toward the direction closer to the center of the mold core. Specifically, the mating groove 13 penetrates the side of the sliding seat 41 near the sliding block 42. That is, the first inclined surface 101 is used to slide and abut with the edge of the sliding block 42 near the sliding seat 41. The first adjusting block 10 is provided with a first notch 35 on the side away from the center of the first female mold 8. The inner wall of the first notch 35 aligned with the first inclined surface 101 is flat to avoid the first mating pin 12.

[0040] Reference Figure 2 and Figure 5The second adjusting block 11 is fixedly mounted on the second female mold 9. Each second adjusting block 11 corresponds to a mating groove 13. The second adjusting block 11 is used to insert and engage with the corresponding mating groove 13. The cross-section of the second adjusting block 11 near the end of the second female mold 9 is rectangular, and its cross-section matches the cross-section of the mating groove 13, facilitating a complete snap-fit ​​engagement with the corresponding mating groove 13. The side of the second adjusting block 11 away from the center of the second female mold 9 has a second inclined surface 111. The second inclined surface 111 is located at the end of the second adjusting block 11 near the sliding seat 41. The distance from the second inclined surface 111 to the center of the second female mold 9 increases in the direction away from the second female mold 9, so that the second adjusting block 11 forms a second notch 36 on the side away from the center of the second female mold 9. The side of the second adjusting block 11 near the sliding seat 41 and away from the mold core is also a plane and flush with the side of the second adjusting block away from the sliding seat 41 and away from the mold core. That is, the second inclined surface 111 is located between two planes. The second adjusting block 11 has a fifth inclined surface 112 on the side near the center of the second female mold 9. The fifth inclined surface 112 is parallel to the second inclined surface 111 and covers the end of the second adjusting block 11 near the sliding seat 41 to provide space for the movement of the sliding seat 41. The first mating pin 12 corresponds to the mating groove 13 one by one. The first mating pin 12 is slidably disposed in the corresponding mating groove 13. The length direction of the first mating pin 12 is perpendicular to the sliding direction of the sliding seat 41. The sliding direction of the first mating pin 12 is perpendicular to the sliding direction of the corresponding sliding body 4. The two sides of the second adjusting block 11 near the end of the corresponding sliding seat 41 have third inclined surfaces 113. The arrangement direction of the two third inclined surfaces 113 is perpendicular to the sliding direction of the sliding seat 41. The distance between the two third inclined surfaces 113 decreases in the direction away from the second female mold 9, so that the width of the second adjusting block 11 on the side away from the second female mold 9 is smaller than the width on the side near the second female mold 9.

[0041] Reference Figure 2 and Figure 5 To facilitate the sliding of the first mating pin 12, a guide hole 24 is provided in the mating groove 13. The guide hole 24 is located on the side of the corresponding mating groove 13 away from the center of the sliding seat 41, and the first mating pin 12 slides through the corresponding guide hole 24.

[0042] Reference Figure 2 and Figure 5When the core of the first male mold 2 or the second male mold 3 is rotated to be aligned with the second female mold 9 after the first shot is completed, the end of the second mating pin 15 away from the guide hole 24 is aligned with the third inclined surface 113 on the side of the second adjusting block 11 that is close to the corresponding guide hole 24. The end of the first mating pin 12 away from the corresponding guide hole 24 is an outwardly convex arc surface. The third inclined surface 113 is used to slide and engage with the outwardly convex arc surface of the first mating pin 12 so that the first mating pin 12 moves toward the direction away from the center of the corresponding mating groove 13. The first reset elastic element is provided in the guide hole 24 and is used to push the first mating pin 12 toward the direction close to the center of the corresponding mating groove 13.

[0043] Reference Figure 2 and Figure 5 When the core of the first male mold 2 or the second male mold 3 is in the closed state with the second female mold 9, the first mating pin 12 is located on the side of the second adjusting block 11 away from the center of the core and on the side of the second inclined surface 111 away from the rotating seat 1. The second inclined surface 111 is used to slide against the first mating pin 12 to push the sliding body 4 to move away from the center of the core. When the second adjusting block 11 moves out of the mating groove 13, the transmission component is used to first drive the second forming part 6 to move towards the direction closer to the first forming part 5, and then the second inclined surface 111 abuts against the first mating pin 12 to make the sliding body 4 move away from the center of the core. When the first adjusting block 10 and the mating groove 13 are gradually inserted and mated, the first inclined surface 101 of the first adjusting block 10 abuts against the sliding body 4 to move towards the side closer to the center of the core, and drives the second forming part 6 to move away from the first forming part 5.

[0044] When the core of the first male mold 2 or the second male mold 3 is closed with the first female mold 8, the end of the first adjusting block 10 extends into the corresponding mating groove 13. As the first adjusting block 10 continues to be inserted into the mating groove 13, the first inclined surface 101 of the first adjusting block 10 abuts against the sliding block 42, causing the sliding block 42 and the sliding seat 41 to move toward the center of the mold core, and driving the second molding part 6 to move away from the first molding part 5. The first notch 35 on the first adjusting block 10 can make way for the first mating pin 12, without affecting the sliding seat 41. The first adjusting block 10 moves until one end of the first female mold 8 abuts against the inner wall of the mating groove 13. At this time, the first adjusting block 10 restricts the position of the sliding seat 41. The second molding part 6 extends and is fixed to the required position of the first molding part 5. Then, the injection operation can be performed. After the injection operation is completed, the mold core of the first male mold 2 or the second male mold 3 with the injection product moves away from the first female mold 8 to perform demolding. Since the first adjusting block 10 is aligned with the mating groove 13 at this time, the sliding seat 41 and the sliding block 42 will not move.

[0045] Then, by rotating the rotating seat 1 180 degrees, the first male mold 2 or the second male mold 3 carrying the product is rotated to align with the second female mold 9. During the mold closing process with the second female mold 9, the end of the first mating pin 12 away from the guide hole 24 is aligned with the third inclined surface 113 of the second adjusting block 11 on the side close to the corresponding guide hole 24. Then, the first male mold 2 or the second male mold 3 carrying the product gradually approaches the second female mold 9, so that the corresponding second adjusting block 11 gradually extends into the corresponding mating groove 13. Since the second adjusting block 11 and the mating groove 13 are aligned and the projection of the second adjusting block 11 in the mold closing direction overlaps with the projection of the first mating pin 12, the third inclined surface 113 of the second adjusting block 11 abuts against the end of the first mating pin 12. As the second adjusting block 11 gradually extends into the mating groove 13, the third... The inclined surface 113 abuts against the first mating pin 12 and moves away from the center of the corresponding mating groove 13, compressing the first reset elastic element until the first mating pin 12 and the side of the second adjusting block 11 are misaligned. Then, under the elastic force of the first reset elastic element, the first mating pin 12 is pushed to move towards the center of the corresponding mating groove 13, so that the first mating pin 12 is located on the side of the second adjusting block 11 away from the center of the mold core. As the mold closes, the first mating pin 12 moves to the side of the second inclined surface 111 near the second female mold 9. At this time, the end of the second adjusting block 11 near the second female mold 9 is completely engaged with the mating groove 13, so that the second adjusting block 11 limits the position of the sliding seat 41. Then, the second injection operation can be performed, so that the sliding block 42 will not move due to the injection pressure during the second injection operation.

[0046] After the second injection is completed, the plastic product is wrapped around the first molding part 5 and the second molding part 6. During the demolding process of the first male mold 2 or the second male mold 3 after the second injection, the second adjusting block 11 gradually moves away from the corresponding mating groove 13. The transmission component first drives the second molding part 6 to move towards the direction closer to the first molding part 5, so that the second molding part 6 is separated from the molded product. Then the second adjusting block 11 moves to the second inclined surface 111 and abuts against the side wall of the first mating pin 12. As the second adjusting block 11 gradually moves away from the corresponding mating groove 13, the second inclined surface 111 abuts against the first mating pin 12 so that the sliding seat 41 moves towards the side away from the center of the mold core. The fifth inclined surface 112 can avoid the movement of the sliding block 42 until the first molding part 5 is completely separated from the molded plastic product. Then the molded product after the second injection can be ejected from the cavity by the ejection mechanism, so that it can be used for demolding plastic products with groove structure on the inner wall of the side hole.

[0047] Reference Figure 2 and Figure 5To facilitate the movement of the first mating pin 12 toward the center of the corresponding mating groove 13, the first reset elastic element includes a first spring 25. The first spring 25 is located inside the guide hole 24, with one end fixed to the bottom wall of the guide hole 24 and the other end fixed to the corresponding first mating pin 12. In other embodiments, the first spring 25 can be replaced by an arc-shaped elastic sheet. When the first male mold 2 or the second male mold 3 is aligned with the second female mold 9 after one shot is completed, the first spring 25 is in its natural state, and the end of the first mating pin 12 away from the guide hole 24 is aligned with the third inclined surface 113 of the second adjusting block 11 on the side near the corresponding guide hole 24. The arrangement of the first spring 25 helps to drive the first mating pin 12 to reset.

[0048] Reference Figure 2 , Figure 5 and Figure 6 To facilitate the movement of the second molding part 6 towards the first molding part 5 when the second adjusting block 11 moves out of the mating groove 13, and the second inclined surface 111 then abuts against the first mating pin 12 to move the sliding body 4 away from the mold core center, the transmission assembly includes an adjusting seat 14, a second mating pin 15, a second reset elastic element, and a transmission element. The adjusting seat 14 corresponds one-to-one with the first molding part 5, so that the adjusting seat 14 corresponds one-to-one with the mating groove 13. The adjusting seat 14 is slidably disposed in the corresponding mating groove 13, and the sliding direction of the adjusting seat 14 is parallel to the sliding direction of the corresponding sliding body 4. A sliding guide cavity is provided on the inner wall of the mating groove 13 near the guide hole 24. The adjusting seat 14 extends into the corresponding sliding guide cavity to guide the sliding of the adjusting seat 14. The cross-section of the adjusting seat is U-shaped, with a mating hole in the middle. The mating hole is used to insert and engage with the first adjusting block 10 or the second adjusting block 11 so that the adjusting seat 14 moves towards the mold core center through the first inclined surface 101 abutting against it.

[0049] Reference Figure 2 , Figure 5 and Figure 6The second mating pin 15 is slidably mounted on the adjusting seat 14. The second mating pin 15 is located on the side of the adjusting seat 14 away from the corresponding first molding part 5. The sliding direction and length direction of the second mating pin 15 are parallel to the sliding direction of the first mating pin 12. The end of the second mating pin 15 away from the adjusting seat 14 is also designed as a convex arc surface. The second mating pin 15 is used to slide and engage with the second inclined surface 111 or the third inclined surface 113 to abut against the second mating pin 15 and move the adjusting seat 14 away from the center of the mold core. The second reset elastic member is used to push the second mating pin 15 to move towards the center of the corresponding mating groove 13. Specifically, the second reset elastic element includes a second spring 26, which is sleeved on the side of the second mating pin 15 away from the center of the corresponding mating groove 13. One end of the second spring 26 is fixed on the adjusting seat 14, and the other end is fixed on the second mating pin 15. The second mating pin 15 is located on the side of the first mating pin 12 away from the fixed seat 7. When the second spring 26 is in its natural state, the end of the second mating pin 15 near the center of the mating groove 13 is flush with the end of the first mating pin 12 near the center of the mating groove 13 in the mold closing direction, thereby facilitating the mating of the second mating pin 15 with the third inclined surface 113 on the second adjusting block 11.

[0050] Reference Figure 2 and Figure 5 Furthermore, the second adjusting block 11 has a flat segment 114 that connects with the second inclined surface 111. The flat segment 114 is located on the side of the second inclined surface 111 away from the rotating seat 1. When the second mating pin 15 abuts against the second inclined surface 111, the first mating pin 12 abuts against the flat segment 114. When the first mating pin 12 abuts against the second inclined surface 111, the second mating pin 15 disengages from the second inclined surface 111. The transmission member is used to drive the second molding part 6 to move when the adjusting seat 14 slides. When the adjusting seat 14 moves toward the center of the mold core, the second molding part 6 moves away from the first molding part 5.

[0051] When the core of the first male mold 2 or the second male mold 3 is closed with the first female mold 8, the end of the first adjusting block 10 gradually extends into the mating groove 13. Then, the first inclined surface 101 of the first adjusting block 10 abuts against the edge of the corresponding sliding block 42. As the first adjusting block 10 gradually extends into the mating groove 13, the first inclined surface 101 pushes the sliding block 42, causing the sliding seat 41 and the sliding block 42 to move together toward the center of the mold core. When the end of the first adjusting block 10 near the first female mold 8 abuts against the inner wall of the mating groove 13, the first adjusting block 10 extends between the adjusting seat 14 and the first mating pin 12. As the first adjusting block 10 continues to extend, the first inclined surface 101 of the first adjusting block 10... The first adjusting block 10 slides towards the first molding part 5, and the second molding part 6 moves away from the first molding part 5 through the transmission component until the adjusting block 14 moves to the desired position. At this time, the first adjusting block 10 and the mating groove 13 are inserted into the position, thereby restricting the position of the sliding block 41 and the adjusting block 14. Then, the first injection operation can be performed. After the first injection operation is completed, the mold core of the first male mold 2 or the second male mold 3 with the first injection product moves away from the first female mold 8 to perform demolding. Since the first adjusting block 10 and the mating groove 13 are completely aligned at this time, the sliding block 41, the sliding block 42 and the adjusting block 14 will not move.

[0052] Next, the rotating base 1 rotates 180 degrees, causing the first male mold 2 or the second male mold 3 carrying the product to rotate until it aligns with the second female mold 9. At this time, the first spring 25 and the second spring 26 are in their natural state, so that the ends of the first mating pin 12 and the second mating pin 15 away from the guide hole 24 are aligned with the third inclined surface 113 of the second adjusting block 11 on the side near the corresponding guide hole 24. Then, the mold core of the first male mold 2 or the second male mold 3 carrying the product gradually approaches the second female mold 9, causing the corresponding second adjusting block 11 to gradually extend into the corresponding mating groove 13. Since the second adjusting block 11 is completely aligned with the corresponding mating groove 13, and the projection of the second adjusting block 11 in the mold closing direction overlaps with the projections of the first mating pin 12 and the second mating pin 15, the third inclined surface 113 of the second adjusting block 11 first abuts against the end of the first mating pin 12. As the second adjusting block 11 gradually extends into the mating groove 13, the third inclined surface 113 abuts against the first mating pin 12 and moves away from the center of the corresponding mating groove 13, compressing the first spring 25. Until the sidewalls of the first mating pin 12 and the second adjusting block 11 are misaligned, under the elastic force of the first spring 25, the first mating pin 12 moves toward the center of the corresponding mating groove 13. Then, the third inclined surface 113 abuts against the end of the second mating pin 15. As the second adjusting block 11 gradually extends into the mating groove 13, the first mating pin 12 moves to the flat section 114. The third inclined surface 113 abuts against the second mating pin 15 and moves toward the direction away from the center of the corresponding mating groove 13, causing the second spring 26 to deform until the first... The sidewalls of the second mating pin 15 and the second adjusting block 11 are misaligned. Under the elastic force of the second spring 26, the second adjusting block 15 moves towards the center of the corresponding mating groove 13, so that the side surface of the second mating pin 15 abuts against the second inclined surface 111 of the second adjusting block 11. The end of the second adjusting block 11 near the second female mold 9 is completely engaged with the mating groove 13 to restrict the position of the sliding seat 41 and the adjusting seat 14. Then, the second injection operation can be carried out so that the sliding block 42 will not move due to the injection pressure during the second injection operation.

[0053] After the second shot is completed, the mold core of the first male mold 2 or the second male mold 3, which has completed the second shot, begins to gradually move away from the second female mold 9 for demolding. As the sliding seat 41 gradually moves away from the second adjusting block 11, the second inclined surface 111 of the second adjusting block 11 first abuts against the second mating pin 15, driving the adjusting seat 14 to move away from the first molding part 5. Through the transmission component, it drives the second molding part 6 to move closer to the first molding part 5, causing the second molding part 6 to separate from the molded product. Then, the second inclined surface 111 of the second adjusting block 11 and the second mating pin... 15 disengages, the second mating pin 15 moves and abuts against the plane at the end of the second adjusting block 11, then the second inclined surface 111 of the second adjusting block 11 begins to abut against the side surface of the first mating pin 12. As demolding continues, the second inclined surface 111 of the second adjusting block 11 pushes the first mating pin 12 and the sliding seat 41 to move away from the center of the mold core, so that the first molding part 5 is completely separated from the molded plastic product. The molded product completed by the second injection can then be ejected from the cavity by the ejection mechanism, thus making it suitable for demolding plastic products with groove structures on the inner wall of the side hole.

[0054] Reference Figure 6 and Figure 7 To facilitate the movement of the second forming part 6 when the adjusting seat 14 slides, the transmission component includes a pull rod 16 and a connecting rod 17. The pull rod 16 is fixed on the side of the adjusting seat 14 near the corresponding first forming part 5. The length direction of the pull rod 16 is parallel to the sliding direction of the sliding seat 41. The pull rod 16 slides into the first forming part 5. The second forming part 6 is located on the side of the pull rod 16 away from the corresponding adjusting seat 14, and the pull rod 16 is located between the two corresponding second forming parts 6. The connecting rod 17 corresponds to the second forming part 6 one by one. One end of the connecting rod 17 is hinged to the pull rod 16, and the other end is hinged to the second forming part 6. The hinge axis of the connecting rod 17 is perpendicular to the sliding direction of the corresponding second forming part 6. The distance between the two connecting rods 17 decreases towards the pull rod 16, so that the length direction of the connecting rod 17 intersects the length direction of the pull rod 16.

[0055] When the adjusting seat 14 slides toward the direction of the corresponding first molding part 5, it drives the pull rod 16 to move toward the direction of the two second molding parts 6, thereby causing the two second molding parts 6 to move away from each other through the connecting rod 17, so that the second molding parts 6 extend out of the first molding part 5. When the position of the adjusting seat 14 is fixed, the position of the second molding parts 6 is fixed and it is not easy to move under injection pressure. When the adjusting seat 14 slides away from the direction of the corresponding first molding part 5, it pulls the pull rod 16 to move away from the two second molding parts 6, thereby causing the two second molding parts 6 to move closer to each other through the connecting rod 17, so that the second molding parts 6 retract into the first molding part 5 and separate from the plastic product.

[0056] Reference Figure 7In order to guide the sliding of the second molding part 6, the first molding part 5 is provided with a sliding hole 22 that slides with the second molding part 6. A guide rail 33 is fixed inside the first molding part 5, and the two second molding parts 6 slide with the guide rail 33.

[0057] Reference Figure 2 and Figure 5 To prevent unnecessary movement of the sliding seat 41 and the adjusting seat 14 during the rotation of the rotating seat 1, the sliding fit between the sliding seat 41 and the corresponding first male mold 2 or second male mold 3 has a certain frictional force, which is greater than the overall weight of the sliding body 4. The first male mold 2 and the second male mold 3 are provided with first fixing members, which correspond one-to-one with the sliding seat 41. The first fixing members are used to fix the sliding seat 41 relative to the corresponding first male mold 2 or second male mold 3 when the second inclined surface 111 is disengaged from the first mating pin 12. Specifically, each first fixing member can be two spring jumpers installed on the mold core of the first male mold 2 or the second male mold 3. The bottom wall of the sliding seat 41 away from the sliding block 42 is provided with a snap-fit ​​groove that engages with the spring jumpers. When the second inclined surface 111 is disengaged from the first mating pin 12, the snap-fit ​​groove on the sliding seat 41 is aligned with the corresponding two spring jumpers. The spring jumpers are existing technology and will not be described in detail here. In other embodiments, the first fixing member may also employ two adsorption magnets, one of which is disposed on the core of the first male mold 2 or the second male mold 3, and the other is disposed on the sliding seat 41. During the demolding process, when the second inclined surface 111 moves out of the mating groove 13 and disengages from the first mating pin 12, the magnet on the sliding seat 41 adsorbs and engages with the corresponding magnet on the first male mold 2 or the second male mold 3. In other embodiments, when the sliding seat 41 is in the mold-closed position, it can also be relatively fixed by the engagement of a spring-loaded spring and a locking groove.

[0058] Reference Figure 2 and Figure 5 The sliding fit between the adjusting seat 14 and the inner wall of the mating groove 13 also has a certain frictional force, which is greater than the overall weight of the adjusting seat 14 and the pull rod 16, so that the adjusting seat 14 will not move unnecessarily during the rotation of the rotating seat 1. At the same time, a second fixing member is provided in the mating groove 13. The second fixing member is used to fix the adjusting seat 14 relative to the corresponding sliding body 4 when the second inclined surface 111 is disengaged from the second mating pin 15. Specifically, the second fixing member and the first fixing member have the same structure. They can be made to fit a spring jumper with a snap-fit ​​groove. When the second inclined surface 111 moves out of the mating groove 13 and disengages from the second mating pin 15, the snap-fit ​​groove on the adjusting seat 14 aligns with the spring jumper on the inner wall of the mating groove 13. Alternatively, they can be made to fit an adhesive fit between two magnets. Specifically, when the end of the second inclined surface 111 away from the flat section 114 is disengaged from the second mating pin 15, the magnet on the adjusting seat 14 is attracted to the magnet on the inner wall of the corresponding mating groove 13.

[0059] Reference Figure 2 and Figure 3 Both the first female mold 8 and the second female mold 9 are provided with limiting seats 23, which correspond one-to-one with sliding seats 41. The limiting seat 23 has a fourth inclined surface 231, which is used to abut against the side of the corresponding sliding seat 41 away from the mold core center. Specifically, the side of the sliding seat 41 away from the sliding block 42 has a mating inclined surface to abut against the fourth inclined surface 231. Specifically, the end of the fourth inclined surface 231 away from the fixed seat 7 is flush with the end of the first inclined surface 101 or the second inclined surface 111 near the fixed seat 7, so it will not affect the fit between the first adjusting block 10 and the sliding seat 41, or between the second adjusting block 11 and the sliding seat 41 when the mold is closed. When the first adjusting block 10 and the second adjusting block 11 move to the required position in the corresponding mating groove 13, the fourth inclined surface 231 of the limiting seat 23 abuts against the mating inclined surface of the corresponding sliding seat 41 away from the mold core center, further limiting the sliding seat 41.

[0060] Reference Figure 2 , Figure 3 and Figure 8 To improve the demolding effect of the sliding block 42, the two-color injection molding mold also includes a cooling system. The cooling system includes a cooling pipe 18 disposed in the sliding block 42. Specifically, the cooling pipe 18 can be a channel opened in the sliding block 42 or a pre-embedded pipe. Specifically, the shape of the cooling pipe 18 can be designed as U-shaped, T-shaped, convex, or other shapes as needed, without limitation. The sliding seat 41 is provided with an inlet channel 19 and an outlet channel 20. Both the inlet channel 19 and the outlet channel 20 are connected to the cooling pipe 18 and are located on the side of the sliding seat 41 away from the center of the mold core. The inlet channel 19 serves as the medium entry end, and the outlet channel 20 serves as the medium output end.

[0061] After injection, cooling medium is introduced into the inlet channel 19, allowing it to quickly enter the cooling pipe 18 to cool the sliding block 42. Then, the medium flows out from the outlet channel 20, which helps the sliding block 42 to be demolded from the product.

[0062] Reference Figure 5 and Figure 7To improve the demolding effect of the first molding part 5 and the second molding part 6, the cooling system also includes an air passage 21. The air passage 21 is opened in the sliding seat 41 and the sliding body 4 and extends into the first molding part 5. The air passage 21 corresponds one-to-one with the second molding part 6. The length direction of the air passage 21 in the second molding part 6 is parallel to the sliding direction of the sliding seat 41. The air passage 21 on the sliding seat 41 is connected to an external cooling air source through a pipe. The air passage 21 is connected to the sliding hole 22 of the corresponding second molding part 6. When the end of the second molding part 6 away from the connecting rod 17 is flush with the outer wall of the corresponding side of the first molding part 5, the side wall of the second molding part 6 blocks the air passage 21. When the side of the second molding part 6 away from the connecting rod 17 is aligned with the center line of the corresponding air passage 21, the air passage 21 is connected to the external space of the first molding part 5.

[0063] When the second molding part 6 extends out of the first molding part 5, the air passage 21 is closed. When the injection molding is completed and the second molding part 6 retracts into the first molding part 5, the side of the second molding part 6 away from the connecting rod 17 is driven to align with the center line of the corresponding air passage 21, so that the air passage 21 is connected to the space outside the first molding part 5. Then, cooling air is introduced into the air passage 21 through an external air source, so that the cooling air is blown into the side hole of the plastic product and the groove of the inner wall of the side hole, which helps to improve the smoothness of demolding and solve the problem of insufficient cooling of the first molding part 5.

[0064] Reference Figure 5 and Figure 7 A vent hole 27 is provided on the side of the first forming part 5 away from the sliding block 42. A sealing body 28 is slidably disposed inside the first forming part 5. The sealing body 28 is U-shaped and is located on the side of the second forming part 6 away from the sliding block 42. The opening side of the sealing body 28 faces the sliding block 42. A sealing part 29 is integrally formed on the side of the sealing body 28 away from the sliding block 42. The diameter of the sealing part 29 increases in the direction closer to the sliding block 42. The vent hole 27 is inserted into the corresponding sealing part 29 to open and close the corresponding vent hole 27. Through holes 31 are distributed on opposite sides of the sealing part 29. Two through holes 31 are opened opposite each other on the sealing body 28. When the side of the sealing body 28 away from the sliding body 4 abuts against the inner wall of the first forming part 5, the vent hole 27 and the through hole 31 are both blocked. A connecting hose 32 connects the through hole 31 to the corresponding air passage 21.

[0065] Reference Figure 5 and Figure 7A third spring 34 is fixedly provided between the guide rail 33 and the sealing body 28 for pulling the sealing body 28 to slide towards the second forming part 6. The two ends of the sealing body 28 respectively abut against the second forming part 6 on the corresponding side. The end of the sealing body 28 near the center of the first forming part 5 has an arc surface. The distance from the arc surface to the center of the first forming part 5 increases towards the sliding block 42. When the second forming part 6 extends out of the first forming part 5 and the outer wall of the second forming part 6 abuts against the corresponding end of the sealing body 28, the vent 27 is in a blocked state and the third spring 34 is in a stretched state.

[0066] When the second molding part 6 is extended from the first molding part 5, the vent 27, through hole 31, and sliding hole 22 are all blocked. As the second molding part 6 gradually moves towards the first molding part 5 until it is completely inserted into the sliding hole 22 and the side of the second molding part 6 away from the connecting rod 17 is aligned with the centerline of the corresponding air passage 21, the sealing body 28 slides away from the vent 27 under the action of the third spring 34, so that the end of the second molding part 6 abuts against the arc surface of the end of the sealing body 28. Then, cooling gas is introduced into the air passage 21. Part of the cooling gas flow is sprayed from the sliding hole 22 onto the groove of the inner wall of the side hole of the plastic product, and part of the cooling gas flow is sprayed onto the inner wall of the side hole of the plastic product through the connecting hose 32, through hole 31, and vent 27, thereby greatly improving the demolding effect of the product.

[0067] The implementation principle of this application embodiment is as follows: When the mold core of the first male mold 2 or the second male mold 3 is closed with the first female mold 8, the end of the first adjusting block extends into the corresponding mating groove 13. Then, the first inclined surface 101 of the first adjusting block 10 abuts against the edge of the corresponding sliding block 42. As the first adjusting block 10 continues to extend into the mating groove 13, the first inclined surface 101 pushes the sliding block 42, causing the sliding seat 41 and the sliding block 42 to move towards the center of the mold core. When one end of the first adjusting block 10 near the first female mold 8 abuts against the inner wall of the mating groove 13, the first adjusting block 10 continues to extend into the mating groove 13, but the sliding seat 41 no longer moves. At the same time, the end of the first adjusting block 10 extends between the adjusting seat 14 and the first mating pin 12. As the first adjusting block 10 continues to extend, the first... The first inclined surface 101 of the adjusting block 10 slides towards the first molding part 5, abutting against the edge of the adjusting seat 14. Through the transmission of the pull rod 16 and the two connecting rods 17, the second molding part 6 extends away from the first molding part 5 until the adjusting seat 14 moves to the desired position. At this time, the first adjusting block 10 and the mating groove 13 are inserted into the position. The first adjusting block 10 locks the position of the sliding seat 41 and the adjusting seat 14. Then, the first injection operation is performed. After the first injection operation is completed, the mold core of the first male mold 2 or the second male mold 3 with the first injection product moves away from the first female mold 8 to demold. Since the first adjusting block 10 and the mating groove 13 are aligned at this time, the sliding seat 41, the sliding block 42 and the adjusting seat 14 will not move.

[0068] Next, the rotating seat 1 rotates 180 degrees, causing the first male mold 2 or the second male mold 3 carrying the product to rotate until it aligns with the second female mold 9. Then, the mold core of the first male mold 2 or the second male mold 3 carrying the product gradually approaches the second female mold 9, causing the corresponding second adjusting block 11 to gradually extend into the corresponding mating groove 13. Then, the third inclined surface 113 of the second adjusting block 11 first abuts against the end of the first mating pin 12, causing the first mating pin 12 to move away from the center of the corresponding mating groove 13 until the first mating pin 12 and the second adjusting block 11 are misaligned. Under the elastic force of the first spring 25, it moves towards the center of the corresponding mating groove 13. As the mold continues to close, the first... The three inclined surfaces 113 abut against the end of the second mating pin 15, causing the second mating pin 15 to move away from the center of the corresponding mating groove 13 until the second mating pin 15 is misaligned with the second adjusting block 11. Under the elastic force of the second spring 26, it moves towards the center of the corresponding mating groove 13. At this time, the first mating pin 12 abuts against the flat section 114 of the second adjusting block 11, and the second mating pin 15 abuts against the second inclined surface 111 of the second adjusting block 11. The end of the second adjusting block 11 near the second female mold 9 is fully engaged with the mating groove 13. The position of the second adjusting block 11 is limited by the corresponding sliding seat 41 and adjusting seat 14. Then, the two-shot operation can be performed.

[0069] After the second injection is completed, cooling medium is introduced into the inlet channel 19 to cool the sliding block 42. Then, the mold core of the first male mold 2 or the second male mold 3, which has completed the second injection, begins to gradually move away from the second female mold 9 for demolding. As the sliding seat 41 gradually moves away from the second adjusting block 11, the second inclined surface 111 of the second adjusting block 11 first abuts against the second mating pin 15, driving the adjusting seat 14 to move away from the first molding part 5. Through the transmission of the pull rod 16 and the connecting rod 17, the second molding part 6 moves towards the first molding part 5, causing the second molding part 6 to separate from the molded product, until the side of the second molding part 6 away from the connecting rod 17 is aligned with the corresponding air passage 2. 1. Align the center line, then introduce cooling air into the air passage 21, so that the cooling airflow is discharged from the sliding hole 22 and the vent 27. Then, the second inclined surface 111 of the second adjusting block 11 disengages from the second mating pin 15, and the second inclined surface 111 of the second adjusting block 11 begins to abut against the first mating pin 12, pushing the first mating pin 12 and the sliding seat 41 to move away from the center of the mold core, so that the first molding part 5 is completely separated from the molded plastic product. The molded product completed by the second injection can then be ejected from the cavity by the ejection mechanism. This is suitable for demolding plastic products with grooved structures on the inner wall of the side hole, without damaging the structure of the molded product or the second molding part 6.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A two-color injection molding mold characterized by, The utility model relates to a two -shot injection moulding device, which comprises: a rotating seat (1); a first male mould (2) arranged on the rotating seat (1); a second male mould (3) arranged on the rotating seat (1), wherein a sliding body (4) is slidably arranged on the core of the first male mould (2) and the second male mould (3), the sliding body (4) slides towards the direction of approaching or moving away from the center of the corresponding core, the sliding body (4) serves as a part of the inner wall of the cavity during injection, a first forming part (5) is arranged on the sliding body (4), a second forming part (6) is slidably arranged on the first forming part (5), and the second forming part (6) slides towards the direction of approaching or moving away from the first forming part (5); an adjusting mechanism for adjusting the second forming part (6) to slide towards the direction of approaching the first forming part (5) and then adjusting the sliding body (4) to move towards the direction of moving away from the center of the corresponding core when the first male mould (2) or the second male mould (3) is ejected after the completion of two-shot injection. The double-color injection molding die further comprises a fixing base (7), a first female die (8) and a second female die (9), the adjusting mechanism comprises a first adjusting block (10), a second adjusting block (11), a first matching pin (12), a first reset elastic member and a transmission assembly, the first adjusting block (10) is arranged on the first female die (8), a matching groove (13) is arranged on the sliding body (4), the first adjusting block (10) is used for plug-in cooperation with the matching groove (13) on the sliding body (4), the first adjusting block (10) is provided with a first inclined surface (101) on the side close to the center of the first female die (8), the first inclined surface (101) is used for sliding abutment with the edge close to the core side of the matching groove (13) to push the sliding body (4) to move towards the direction close to the core center, the second adjusting block (11) is arranged on the second female die (9), the second adjusting block (11) is provided with a second inclined surface (111) on the side away from the center of the second female die (9), the first matching pin (12) corresponds to the matching groove (13) one-to-one, the first matching pin (12) is slidingly arranged in the corresponding matching groove (13), the sliding direction of the first matching pin (12) is perpendicular to the sliding direction of the corresponding sliding body (4), when the core of the first male die (2) or the second male die (3) is in the clamping mode with the second female die (9), the first matching pin (12) is located on the side of the second adjusting block (11) away from the core center, the second inclined surface (111) is used for sliding abutment with the first matching pin (12) to push the sliding body (4) to move towards the side away from the core center, the second adjusting block (11) is provided with a fifth inclined surface (112) on the side close to the center of the second female die (9), the fifth inclined surface (112) is arranged in parallel with the second inclined surface (111), the second adjusting block (11) is provided with a third inclined surface (113) on the side edge, the third inclined surface (113) is used for sliding cooperation with the first matching pin (12) to make the first matching pin (12) move towards the direction away from the center of the corresponding matching groove (13), the first reset elastic member is used for pushing the first matching pin (12) to move towards the center of the corresponding matching groove (13), the transmission assembly is used for driving the second forming part (6) to move towards the direction close to the first forming part (5) first when the second adjusting block (11) moves out of the matching groove (13), and then the second inclined surface (111) abuts against the first matching pin (12) to make the sliding body (4) move towards the direction away from the core center. The transmission assembly comprises an adjusting seat (14), a second matching pin (15), a second reset elastic member and a transmission member, the adjusting seat (14) corresponds to the first forming part (5) one by one, the adjusting seat (14) is slidingly arranged in the matching groove (13), the adjusting seat (14) is used for plug-in cooperation with the first adjusting block (10) or the second adjusting block (11), so as to push the adjusting seat (14) to move towards the direction close to the center of the mold core through the first inclined surface (101), the second matching pin (15) is slidingly arranged on the adjusting seat (14), the second matching pin (15) is used for sliding cooperation with the second inclined surface (111) and the third inclined surface (113) respectively, so as to push the adjusting seat (14) to move away from the center of the mold core by abutting against the second matching pin (15), the second reset elastic member is used for pushing the second matching pin (15) to move towards the center of the corresponding matching groove (13), the second matching pin (15) is located on the side away from the fixed seat (7) of the first matching pin (12), when the second matching pin (15) abuts against the second inclined surface (111), the first matching pin (12) is separated from the second inclined surface (111); when the first matching pin (12) abuts against the second inclined surface (111), the second matching pin (15) is separated from the second inclined surface (111), the transmission member is used for driving the second forming part (6) to move when the adjusting seat (14) slides, when the adjusting seat (14) moves towards the direction close to the center of the mold core, the second forming part (6) moves away from the first forming part (5).

2. A two-color injection molding mold according to claim 1, characterized in that: The first master mold (8) and the second master mold (9) are arranged on the fixed seat (7), the first master mold (8) is used for one-shot operation, and the second master mold (9) is used for two-shot operation.

3. A two-color injection molding mold according to claim 2, characterized in that: The sliding direction of the adjusting seat (14) is parallel to the sliding direction of the corresponding sliding body (4), and the sliding direction of the second matching pin (15) is parallel to the sliding direction of the first matching pin (12).

4. A two-shot injection moulding mould according to claim 3, characterised in that: The second adjusting block (11) has a flat section (114) which is connected with the second inclined surface (111), and the flat section (114) is located on the side away from the rotating seat (1) of the second inclined surface (111), when the second matching pin (15) abuts against the second inclined surface (111), the first matching pin (12) abuts against the flat section (114).

5. A two-shot injection molding mold according to claim 3, characterized in that: The transmission member comprises a pull rod (16) and a connecting rod (17), the pull rod (16) is arranged on the adjusting seat (14) and slidingly extends into the first forming part (5), one end of the connecting rod (17) is hinged with the pull rod (16), the other end is hinged with the second forming part (6), the second forming part (6) is located on the side close to the center of the mold core of the pull rod (16), and the length direction of the connecting rod (17) intersects with the length direction of the pull rod (16).

6. A two-shot injection molding mold according to claim 3, characterized in that: The first male mold (2) and the second male mold (3) are provided with first fixing members, which are used to fix the sliding seat (41) relative to the corresponding first male mold (2) or the second male mold (3) when the second inclined surface (111) is disengaged from the first matching pin (12).

7. A two-shot injection molding mold according to claim 2, characterized in that: The first female mold (8) and the second female mold (9) are provided with limiting seats (23), which are in one-to-one correspondence with the sliding bodies (4), and the limiting seat (23) has a fourth inclined surface (231) for abutting against the side of the corresponding sliding body (4) away from the center of the mold core.

8. A two-shot injection moulding mould according to any one of claims 1 to 7, characterised in that: The double-color injection molding mold further comprises a cooling system, which comprises a cooling pipeline (18) arranged in the sliding body (4), the sliding body (4) is provided with an inlet channel (19) and an outlet channel (20), the inlet channel (19) and the outlet channel (20) are in communication with the cooling pipeline (18), the inlet channel (19) is used as a medium inlet end, and the outlet channel (20) is used as a medium outlet end.

9. A two-shot injection moulding mould according to claim 8, characterised in that: The cooling system further comprises an air path (21), which is arranged in the sliding body (4) and extends into the first forming part (5), the first forming part (5) is provided with a sliding hole (22) in sliding cooperation with the second forming part (6), the air path (21) is in communication with the sliding hole (22), when the second forming part (6) extends out of the corresponding sliding hole (22), the second forming part (6) blocks the air path (21); when the side of the second forming part (6) away from the center of the first forming part (5) is aligned with the center line of the air path (21), the air path (21) is in communication with the space outside the first forming part (5).

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