A two-color injection mold set

Abstract

A two-color injection mold set relates to the technical field of injection mold, comprising a first injection mold and a second injection mold, the first injection mold and the second injection mold form a first injection mold cavity and a second injection mold cavity when the first injection mold and the second injection mold are closed, the first injection mold and the second injection mold are respectively provided with a first injection pouring system and a second injection pouring system, the first injection mold is provided with a first injection insert, the second injection mold is provided with a positioning assembly, and a first molded part is at least partially located in the second injection mold cavity; when the first injection mold is closed, the first injection pouring system injects the first plastic into the first injection mold cavity, so that the first molded part is injection molded on the first injection insert; after the mold is opened, the first injection insert and the first molded part are transferred into the second injection mold, and are positioned and fixed by the positioning assembly; after the second injection mold is closed, the second injection pouring system injects the second plastic into the second injection mold cavity, so that the second molded part is injection molded on the first molded part. The above technical scheme has the advantages of improving the molding quality and production efficiency of the two-color product.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a two-color injection mold assembly. Background Technology

[0002] Two-color injection molding technology is widely used in the manufacture of plastic products with composite materials or color structures. Traditional two-color molds mostly adopt a common mold base rotating structure, that is, two sets of cavities are integrated in one mold base, and the injection station is switched by rotating the mold.

[0003] However, due to structural reasons (such as nested products), the cavities of some two-color products cannot be shared. Therefore, they cannot be produced using a common mold base rotation method. For these products, it is usually necessary to design two sets of molds to separately injection mold one-shot and two-shot molded parts, and then connect the one-shot and two-shot molded parts by snap-fit ​​or adhesive. However, the resulting two-color products have limited bonding strength, and the one-shot molded parts are prone to separation from the two-shot molded parts, reducing the quality of the finished product. Moreover, the production efficiency of injection molding separately and then assembling is low. Utility Model Content

[0004] The purpose of this application is to provide a two-color injection mold assembly to solve the problems in the prior art where nested two-color products cannot be produced by a common mold frame rotation method, and where the method of separately injection molding and then assembling results in low bonding strength and low production efficiency between the first-shot and second-shot molded parts.

[0005] The technical solution adopted by this utility model is: a two-color injection mold assembly, including a first injection mold and a second injection mold, wherein when the first injection mold and the second injection mold are closed, a first injection cavity and a second injection cavity are respectively formed;

[0006] The injection mold is provided with an injection gating system and at least one injection insert. The injection gating system is used to inject a first type of plastic into the injection cavity, and the injection insert is at least partially located within the injection cavity.

[0007] The two-shot mold is equipped with a two-shot gating system and a positioning component. The two-shot gating system is used to inject a second type of plastic into the two-shot mold cavity, and the positioning component is used to position and fix the one-shot molded part transferred to the two-shot mold.

[0008] When the first injection mold is closed, a first injection molded part is injection molded on the first injection insert through the first injection gating system; after the mold is opened, the first injection insert and the first injection molded part are transferred to the second injection mold and positioned and fixed by the positioning component; after the second injection mold is closed, a second injection molded part is injection molded on the first injection molded part through the second injection gating system.

[0009] Optionally, the two-shot mold includes a two-shot fixed mold assembly and a two-shot moving mold assembly. The two-shot fixed mold assembly includes a two-shot fixed mold panel, a two-shot fixed mold plate, and a two-shot fixed mold core. The two-shot moving mold assembly includes a two-shot moving mold base plate, a two-shot moving mold plate, and a two-shot moving mold core.

[0010] The positioning assembly includes a positioning groove formed in the two moving mold cores, a mounting groove formed in the two moving mold cores and communicating with the positioning groove, a lower abutment member provided in the mounting groove for abutting the bottom side of the first injection insert, and an upper abutment member provided in the two fixed mold cores for abutting the top side of the first injection insert. The mounting groove is located below the positioning groove. The lower abutment member and the upper abutment member cooperate to limit the upper and lower sides of the first injection insert to achieve positioning of the first injection insert.

[0011] Optionally, the lower abutment includes an abutment switch fixedly disposed in the mounting groove, the abutment switch having an elastic contact for abutting against a shot insert.

[0012] Optionally, the upper abutment includes a nitrogen spring, the fixed end of which is fixed to the second injection fixed mold core, and the movable end of which extends toward the second injection moving mold core and abuts against the first injection insert.

[0013] Optionally, the insert is provided with an abutment groove that engages with the movable end of the nitrogen spring.

[0014] Optionally, the positioning component further includes a positioning rod, the fixed end of which is fixedly connected to the fixed mold core of the second injection, and the free end extends toward the moving mold core of the second injection and abuts against the surface of the first injection molded part.

[0015] Optionally, the number of injection mold cavities is at least two. When the injection mold is closed, the opposite ends of the injection insert extend into the two injection mold cavities to form two injection molded parts at the ends of the injection insert.

[0016] Optionally, the moving mold core of the two-shot injection mold is provided with at least two sets of two-shot slider groups. The two sets of two-shot slider groups are centrally symmetrically arranged on the outside of the first-shot insert and the two first-shot molded parts. The two-shot slider group includes two-shot slider a and two-shot slider b. When the two-shot mold is closed, the fixed mold core of the two-shot injection mold, the moving mold core of the two-shot injection mold, two-shot slider a and two-shot slider b, the first-shot insert and the first-shot molded parts together enclose and form the two-shot mold cavity.

[0017] Optionally, the two-shot fixed mold core is provided with two-shot inclined guide pillars a and b, and the two-shot sliders a and b are respectively provided with two-shot inclined guide grooves a and b that cooperate with the two-shot inclined guide pillars a and b.

[0018] Optionally, the injection mold includes an injection fixed mold assembly and an injection moving mold assembly. The injection fixed mold assembly includes an injection fixed mold panel, an injection fixed template, and an injection fixed mold core. The injection moving mold assembly includes an injection moving mold base plate, an injection moving template, and an injection moving mold core. The injection moving mold core is slidably provided with at least two injection sliders. The injection moving mold core, the injection fixed mold core, the two injection sliders, and the injection insert together enclose and form at least two injection mold cavities.

[0019] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0020] This application involves injecting a first type of plastic into the first-shot mold cavity via a first-shot gating system during the first-shot mold closing process. This allows the first-shot molded part to be injection molded onto the first-shot insert. The first-shot mold is then opened, and the first-shot insert and the first-shot molded part are transferred to the second-shot mold. A positioning component secures and fixes the first-shot insert and the first-shot molded part within the second-shot mold. The second-shot mold is then closed, and a second type of plastic is injected into the second-shot mold cavity via a second-shot gating system, allowing the second-shot molded part to be injection molded onto the first-shot molded part. This injection molding process creates a stable mechanical connection between the first-shot and second-shot molded parts, effectively avoiding the problems of low bonding strength and easy separation caused by traditional snap-fit ​​or adhesive methods in existing technologies. Furthermore, the two-color injection mold assembly of this application offers advantages such as high production efficiency and stable product quality, making it suitable for the injection molding production of various nested two-color products. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0023] Figure 2 This is a cross-sectional view of a primary injection mold in this embodiment;

[0024] Figure 3 This is a partial view of the injection mold in this embodiment;

[0025] Figure 4 This is a cross-sectional view of the two-shot mold in this embodiment;

[0026] Figure 5 yes Figure 4 Enlarged view of section A;

[0027] Figure 6 This is a partial view of the two-shot mold in this embodiment;

[0028] Figure 7 This is a schematic diagram illustrating the fit between the two-shot moving mold core, the one-shot insert, the one-shot molded part, the nitrogen spring, and the positioning rod in this embodiment;

[0029] Figure 8 yes Figure 7 A partial sectional view;

[0030] Figure 9 This is a diagram illustrating the contact switch in this embodiment;

[0031] Figure 10 These are illustrations of the first-shot insert, the first-shot molded part, and the second-shot molded part in this embodiment.

[0032] Explanation of reference numerals in the attached drawings: 100, First-shot mold; 110, First-shot gating system; 120, First-shot insert; 121, Abutment groove; 130, First-shot molded part; 131, Groove; 140, First-shot fixed mold assembly; 141, First-shot fixed mold panel; 142, First-shot fixed template; 143, First-shot fixed mold core; 150, First-shot moving mold assembly; 151, First-shot moving mold base plate; 152, First-shot moving template; 153, First-shot moving mold core; 200, Second-shot mold; 210, Second-shot gating system; 220, Positioning assembly; 221, Positioning groove; 222, Installation groove. 223. Slot; 2231. Abutment switch; 2231. Elastic contact; 224. Nitrogen spring; 225. Positioning rod; 230. Two-shot molded part; 240. Two-shot fixed mold assembly; 241. Two-shot fixed mold panel; 242. Two-shot fixed template; 243. Two-shot fixed mold core; 250. Two-shot moving mold assembly; 251. Two-shot moving mold base plate; 252. Two-shot moving template; 253. Two-shot moving mold core; 260. Two-shot slider assembly; 261. Two-shot slider a; 2611. Two-shot inclined guide groove a; 262. Two-shot slider b; 2621. Two-shot inclined guide groove b. Detailed Implementation

[0033] The following will refer to the appendix in the embodiments of this utility model. Figures 1-10 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] This embodiment provides a two-color injection mold assembly, as shown in the reference... Figures 1-10 The mold includes a first-shot mold 100 and a second-shot mold 200. When the first-shot mold 100 and the second-shot mold 200 are closed, they respectively form a first-shot mold cavity and a second-shot mold cavity. The first-shot mold 100 and the second-shot mold 200 are respectively provided with a first-shot gating system 110 for injecting a first type of plastic into the first-shot mold cavity and a second-shot gating system 210 for injecting a second type of plastic into the second-shot mold cavity. The first-shot mold 100 is provided with a first-shot insert 120, which is at least partially located in the first-shot mold cavity. The second-shot mold 200 is provided with a positioning component 220 for positioning the first-shot insert 120 and the first-shot molded part 130. The positioning component 220 is used to position and fix the first-shot insert 120 and the first-shot molded part 130 transferred to the second-shot mold 200. When the first-shot insert 120 and the first-shot molded part 130 are located in the second-shot mold 200, the first-shot molded part 130 is at least partially located in the second-shot mold cavity.

[0037] It should be noted that the first-shot casting system 110 and the second-shot casting system 210 are conventional technical means in this field and are not improvements of this application. Therefore, this application will not elaborate on them.

[0038] During production, the first injection mold 100 is closed, and a first type of plastic is injected into the first injection cavity through the first injection gating system 110, causing the first injection molded part 130 to be injection molded onto the first injection insert 120. Then, the first injection mold 100 is opened, and the first injection insert 120 and the first injection molded part 130 are transferred to the second injection mold 200. At this point, the second injection mold 200 is closed, and a second type of plastic is injected into the second injection cavity through the second injection gating system 210, causing the second injection molded part 230 to be injection molded onto the first injection molded part 130. Finally, the second injection mold 200 is opened, and the part is ejected and demolded, thus completing the production of the two-color product. Compared with the prior art, although this application also involves separate injection molding, the second injection molded part 230 is directly molded onto the first injection molded part 130, eliminating the need for reassembly. The bonding strength between the first injection molded part 130 and the second injection molded part 230 is high, ensuring the quality of the finished product and resulting in high production efficiency.

[0039] Furthermore, the two-shot mold 200 includes a two-shot fixed mold assembly 240 and a two-shot moving mold assembly 250. The two-shot fixed mold assembly 240 includes a two-shot fixed mold panel 241, a two-shot fixed mold plate 242, and a two-shot fixed mold core 243. The two-shot moving mold assembly 250 includes a two-shot moving mold base plate 251, a two-shot moving mold plate 252, and a two-shot moving mold core 253.

[0040] The positioning component 220 includes a positioning groove 221 formed in the second injection moving mold core 253, a mounting groove 222 formed in the second injection moving mold core 253 and communicating with the positioning groove 221, a lower abutting member provided in the mounting groove 222 for abutting the bottom side of the first injection insert 120, and an upper abutting member provided in the second injection fixed mold core 243 for abutting the top side of the first injection insert 120. The mounting groove 222 is located below the positioning groove 221. The lower abutting member and the upper abutting member cooperate to limit the upper and lower sides of the first injection insert 120 to achieve positioning of the first injection insert 120.

[0041] When the first injection insert 120 is transferred into the positioning groove 221 in the second injection mold 200, the lower abutment abuts against the bottom side of the first injection insert 120. Then the mold is closed, so that the upper abutment abuts against the top side of the first injection insert 120. Under the combined action of the lower abutment and the upper abutment, the precise positioning of the first injection insert 120 in the second injection mold 200 is ensured, avoiding the first injection insert 120 from shifting or misaligning during the injection process, thereby ensuring the quality and precision of the two-color injection molded product.

[0042] Furthermore, the lower abutment includes an abutment switch 223 fixedly disposed in the mounting groove 222, and the abutment switch 223 is provided with an elastic contact 2231 for abutting against a shot insert 120.

[0043] Furthermore, the upper abutment includes a nitrogen spring 224, the fixed end of which is fixedly connected to the second-shot fixed mold core 243, and the movable end of which extends toward the second-shot moving mold core 253 and abuts against the first-shot insert 120.

[0044] When the two-shot mold 200 is closed, the nitrogen spring 224 drives the first-shot insert 120 to move towards the bottom of the positioning groove 221. When the elastic contact 2231 on the contact switch 223 contacts the bottom side of the first-shot insert 120, the first-shot insert 120 is installed in place. Correspondingly, the nitrogen spring 224 stops moving, thereby achieving precise positioning of the first-shot insert 120 and ensuring the injection quality of the two-shot injection molded product.

[0045] Furthermore, the insert 120 is provided with an abutment groove 121 for engaging with the movable end of the nitrogen spring 224.

[0046] The engagement between the abutment groove 121 and the nitrogen spring 224 ensures that the end of the nitrogen spring 224 away from the second injection moving mold core 253 is stably abutted against the top of the first injection insert 120, thereby ensuring the accurate positioning of the first injection insert 120.

[0047] Furthermore, the positioning component 220 also includes a positioning rod 225, the fixed end of which is fixedly connected to the fixed mold core 243 of the second injection, and the free end extends toward the moving mold core 253 of the second injection and abuts against the surface of the first injection molded part 130.

[0048] In this embodiment, a groove 131 is formed on the injection molded part 130 at the position where it abuts against the positioning rod 225. The positioning and fixing of the injection molded part 130 are achieved through the cooperation between the groove 131 and the positioning rod 225, so that the injection molded part 230 can be smoothly injection molded on the injection molded part 130, ensuring the quality of the finished product.

[0049] Furthermore, the number of injection mold cavities is at least two. When the injection mold 100 is closed, the two ends of the injection insert 120 extend into the two injection mold cavities respectively to form two injection molded parts 130 at the two ends of the injection insert 120.

[0050] Understandably, by setting at least two injection mold cavities, two injection molded parts 130 can be formed at both ends of the injection insert 120. This allows for the simultaneous injection molding of two second-shot molded parts 230 at both ends of the injection insert 120 during the second-shot injection molding process, thereby improving production efficiency. In this embodiment, there are two injection inserts 120, and correspondingly, there are four injection mold cavities. This allows for the simultaneous molding of four injection molded parts 130 during the first injection, and consequently, the simultaneous injection molding of four second-shot molded parts 230 onto the injection molded parts 130 during the second injection, further improving production efficiency.

[0051] Furthermore, at least two sets of two-shot sliding block groups 260 are provided on the moving mold core 253. The two sets of two-shot sliding block groups 260 are centrally symmetrically arranged on the outside of the first-shot insert 120 and the two first-shot molded parts 130. The two-shot sliding block group 260 includes two-shot sliding block a261 and two-shot sliding block b262. When the two-shot mold 200 is closed, the two-shot fixed mold core 243, the two-shot moving mold core 253, the two-shot sliding block a261 and two-shot sliding block b262, the first-shot insert 120 and the first-shot molded parts 130 together enclose to form the two-shot mold cavity.

[0052] When the two-shot mold 200 is closed, the two-shot fixed mold core 243, the two-shot moving mold core 253, the two-shot sliders a261 and b262, the first-shot insert 120, and the first-shot molded part 130 cooperate to form the two-shot mold cavity. At this time, the second type of plastic is injected into the two-shot mold cavity through the two-shot gating system 210, so that the two-shot molded part 230 is formed on the first-shot molded part 130. Then the two-shot mold 200 is opened, and the two-shot sliders a261 and b262 are driven to move away from the first-shot insert 120, so that the two-shot molded part 230 is exposed, thereby facilitating subsequent ejection and demolding.

[0053] Furthermore, the second-shot mold core 243 is provided with second-shot inclined guide pillars a and b, and the second-shot sliders a261 and b262 are respectively provided with second-shot inclined guide grooves a2611 and b2621 that cooperate with the second-shot inclined guide pillars a and b.

[0054] Understandably, through the cooperation between the two-shot inclined guide pillars a and b and the two-shot inclined guide grooves a2611 and b2621, the two-shot sliders a261 and b262 can move towards or away from the first-shot insert 120, thereby enabling smooth mold closing and mold opening / demolding.

[0055] Furthermore, the injection mold 100 includes an injection fixed mold assembly 140 and an injection moving mold assembly 150. The injection fixed mold assembly 140 includes an injection fixed mold panel 141, an injection fixed template 142, and an injection fixed mold core 143. The injection moving mold assembly 150 includes an injection moving mold base plate 151, an injection moving template 152, and an injection moving mold core 153. The injection moving mold core 153 is slidably provided with at least two injection sliders. The injection moving mold core 153, the injection fixed mold core 143, the two injection sliders, and the injection insert 120 together enclose and form at least two injection cavities.

[0056] Understandably, through the cooperation between the moving mold core 153 and the fixed mold core 143, and the cooperation between the sliding block and the insert 120, the shape and size of the mold cavity can be precisely controlled, thereby ensuring the molding quality and precision of the molded part 130.

[0057] Working principle: In the two-color injection molding process, molten first plastic is first injected into the first injection mold cavity through the first injection gating system 110. The first plastic cools and solidifies on the surface of the first injection insert 120, forming the first injection molded part 130. After the first injection mold 100 opens, the first injection insert 120, along with the formed first injection molded part 130, is transferred to the second injection mold 200. The positioning component 220 in the second injection mold 200 achieves precise positioning of the first injection insert 120 and the first injection molded part 130, so that the position of the first injection molded part 130 remains unchanged during subsequent injection molding. Then, the second injection mold 200 closes, and the second plastic is injected into the second injection mold cavity through the second injection gating system 210, so that the second injection molded part 230 is injection molded onto the first injection molded part 130. A stable mechanical connection is formed between the first-shot molded part 130 and the second-shot molded part 230, effectively avoiding the problems of low bonding strength and easy separation caused by the connection of the first-shot molded part 130 and the second-shot molded part 230 through traditional snap-fit ​​or adhesive methods.

[0058] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A two-color injection mold assembly, characterized in that, It includes a first-shot mold (100) and a second-shot mold (200), wherein the first-shot mold (100) and the second-shot mold (200) form a first-shot mold cavity and a second-shot mold cavity respectively when they are closed; The injection mold (100) is provided with an injection gating system (110) and at least one injection insert (120), the injection gating system (110) is used to inject a first type of plastic into the injection cavity, and the injection insert (120) is at least partially located in the injection cavity; The two-shot mold (200) is provided with a two-shot gating system (210) and a positioning component (220). The two-shot gating system (210) is used to inject a second type of plastic into the two-shot mold cavity. The positioning component (220) is used to position and fix the first-shot insert (120) and the first-shot molded part (130) transferred to the two-shot mold (200). When the first injection mold (100) is closed, a first injection molded part (130) is formed on the first injection insert (120) by injection molding through the first injection gating system (110); after the mold is opened, the first injection insert (120) and the first injection molded part (130) are transferred to the second injection mold (200) and positioned and fixed by the positioning component (220); after the second injection mold (200) is closed, a second injection molded part (230) is formed on the first injection molded part (130) by injection molding through the second injection gating system (210).

2. The two-color injection mold assembly according to claim 1, characterized in that, The two-shot mold (200) includes a two-shot fixed mold assembly (240) and a two-shot moving mold assembly (250). The two-shot fixed mold assembly (240) includes a two-shot fixed mold panel (241), a two-shot fixed mold plate (242), and a two-shot fixed mold core (243). The two-shot moving mold assembly (250) includes a two-shot moving mold base plate (251), a two-shot moving mold plate (252), and a two-shot moving mold core (253). The positioning component (220) includes a positioning groove (221) formed in the two moving mold cores (253), a mounting groove (222) formed in the two moving mold cores (253) and communicating with the positioning groove (221), a lower abutment member provided in the mounting groove (222) for abutting against the bottom side of the first injection insert (120), and an upper abutment member provided in the two fixed mold cores (243) for abutting against the top side of the first injection insert (120). The mounting groove (222) is located below the positioning groove (221). The lower abutment member and the upper abutment member cooperate to limit the upper and lower sides of the first injection insert (120) to achieve positioning of the first injection insert (120).

3. A two-color injection mold assembly according to claim 2, characterized in that, The lower abutment includes an abutment switch (223) fixedly disposed in the mounting groove (222), and the abutment switch (223) is provided with an elastic contact (2231) for abutting against a shot insert (120).

4. A two-color injection mold assembly according to claim 2, characterized in that, The upper abutment includes a nitrogen spring (224), the fixed end of which is fixed to the second-shot fixed mold core (243), and the movable end of which extends toward the second-shot moving mold core (253) and abuts against the first-shot insert (120).

5. A two-color injection mold assembly according to claim 4, characterized in that, The insert (120) is provided with an abutment groove (121) that abuts against the movable end of the nitrogen spring (224).

6. A two-color injection mold assembly according to claim 2, characterized in that, The positioning component (220) also includes a positioning rod (225), whose fixed end is fixedly connected to the two-shot fixed mold core (243), and whose free end extends toward the two-shot moving mold core (253) and abuts against the surface of the first-shot molded part (130).

7. A two-color injection mold assembly according to claim 2, characterized in that, The number of the injection mold cavities is at least two. When the injection mold (100) is closed, the opposite ends of the injection insert (120) extend into the two injection mold cavities respectively to form two injection molded parts (130) at the ends of the injection insert (120).

8. A two-color injection mold assembly according to claim 7, characterized in that, The two-shot moving mold core (253) is provided with at least two sets of two-shot slider groups (260). The two sets of two-shot slider groups (260) are centrally symmetrically arranged on the outside of the first-shot insert (120) and the two first-shot molded parts (130). The two-shot slider group (260) includes two-shot slider a (261) and two-shot slider b (262). When the two-shot mold (200) is closed, the two-shot fixed mold core (243), the two-shot moving mold core (253), the two-shot slider a (261) and the two-shot slider b (262), the first-shot insert (120) and the first-shot molded parts (130) together enclose the two-shot mold cavity.

9. A two-color injection mold assembly according to claim 8, characterized in that, The two-shot mold core (243) is provided with two-shot inclined guide pillars a and b, and the two-shot sliders a (261) and b (262) are respectively provided with two-shot inclined guide grooves a (2611) and b (2621) that cooperate with the two-shot inclined guide pillars a and b.

10. A two-color injection mold assembly according to claim 7, characterized in that, The injection mold (100) includes an injection fixed mold assembly (140) and an injection moving mold assembly (150). The injection fixed mold assembly (140) includes an injection fixed mold panel (141), an injection fixed template (142), and an injection fixed mold core (143). The injection moving mold assembly (150) includes an injection moving mold base plate (151), an injection moving template (152), and an injection moving mold core (153). The injection moving mold core (153) is slidably provided with at least two injection sliders. The injection moving mold core (153), the injection fixed mold core (143), the two injection sliders, and the injection insert (120) together enclose at least two injection mold cavities.

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