Translationally moving two-color molding mold
By using the linkage design of the inclined guide pillar and slider in the translational two-color molding die, the problems of cumbersome processes and insufficient positioning accuracy in two-color injection molding are solved, thereby improving production efficiency and product quality and meeting diverse market demands.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO KEXIN MOLD CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-03
AI Technical Summary
Existing two-color injection molding technology suffers from cumbersome processes, insufficient positioning accuracy leading to defects at the joint surface, and traditional inclined guide post demolding mechanisms are prone to wear and have poor stability, affecting the yield of complex color-separated products.
The system employs a translational dual-color molding die, which uses a linkage design between the inclined guide pillar and the slider to achieve translational switching of the moving mold core. Combined with modular design and stable lateral demolding by the inclined guide pillar, it ensures the accuracy of the material bonding surface and production efficiency.
Significantly improves production efficiency, reduces equipment investment and scrap rate, ensures the accuracy of material bonding surfaces, achieves complex color separation effects, and meets diverse market demands.
Smart Images
Figure CN224446713U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, specifically a translational two-color molding mold. Background Technology
[0002] With the widespread use of plastic products in daily life and industrial applications, translational two-color injection molding technology has developed rapidly. Modern two-color injection molding machines are equipped with advanced control systems that can precisely adjust temperature, pressure, and injection rate to ensure consistent product quality. Furthermore, with the research and application of new materials, translational two-color injection molding technology is showing broad application prospects in the automotive, electronics, and medical fields.
[0003] In existing technologies, two-color injection molding requires multiple machines or manual mold changing, which results in cumbersome processes, insufficient positioning accuracy leading to defects on the mating surface, and traditional inclined guide post demolding mechanisms are prone to wear and have poor stability, affecting the yield of complex color-separated products.
[0004] Therefore, we propose a translational two-color molding die to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a translational two-color molding die, which solves the problems mentioned in the background art, such as cumbersome processes and insufficient positioning accuracy leading to defects in the mating surface.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0009] A translational two-color molding die includes a template one and a template two. The template one has at least two fixed mold cores inside, and the template two has a movable mold core that matches the fixed mold cores inside. The bottom of the template two has a slider that extends into the movable mold core at one end, and the top of the template one has an inclined guide post that matches the slider.
[0010] Furthermore, there are two sets of inclined guide pillars, each corresponding to one of the two fixed mold cores, and the number of inclined guide pillars in each set is the same as the number of sliders.
[0011] Furthermore, the bottom end of the inclined guide post is fixed to the template one by a fixing block, and two sliding grooves are symmetrically arranged on both sides of the inclined guide post.
[0012] Furthermore, a guide groove is provided inside one end of the slider, the top end of the inclined guide post extends into the inside of the guide groove, and limit posts are provided on both sides of the inner wall of the guide groove, with the opposite ends of the two limit posts extending into the sliding grooves on both sides of the inclined guide post.
[0013] Furthermore, spring blocks are provided on both sides of the slider, and the end of the limiting post away from the slide groove abuts against the end of the spring block.
[0014] Furthermore, the slider has a spring pin and an insert pin located on one side of the spring pin inside the end away from the guide groove, and a slider wear-resistant block is also provided at one end of the slider, with one end of the spring pin extending into the interior of the slider wear-resistant block.
[0015] Furthermore, a second wear-resistant slider block is fixedly provided at the bottom of the second template, and a limit spring block is movably provided inside the second wear-resistant slider block.
[0016] Furthermore, the top of the slider is provided with at least two limiting grooves, and one end of the limiting spring extends into the interior of one of the limiting grooves.
[0017] Furthermore, sliding pieces are provided on both sides of the slider, and a pressure strip is fixedly provided at the bottom of the template two. The number of pressure strips is the same as that of the sliding pieces and they correspond one-to-one. The top of the pressure strip is slidably connected to the bottom of the sliding piece.
[0018] Furthermore, limit blocks are fixedly provided on both sides of the template two, and the limit blocks are located at the end of the slider away from the moving mold core.
[0019] (III) Beneficial Effects
[0020] Compared with the prior art, this utility model provides a translational two-color molding die, which has the following beneficial effects:
[0021] This invention achieves two-color injection molding by switching the moving mold core, significantly improving production efficiency and reducing equipment investment. Its modular design effectively reduces scrap rate and secondary processing costs, while ensuring the accuracy of the bonding surface between the two materials. The inclined guide pillar and linkage slider achieve stable lateral demolding, enabling the product to present complex color separation effects. The combined application of materials with different performance properties can take into account both aesthetic appearance and functional requirements, meeting diverse market demands. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of template one and template two of this utility model;
[0023] Figure 2 This is a schematic diagram of the fixed mold core structure of this utility model;
[0024] Figure 3This is a schematic diagram of the slider structure of this utility model;
[0025] Figure 4 These are exploded views of template one and template two of this utility model.
[0026] Figure 5 These are exploded views of template one and template two of this utility model.
[0027] In the diagram: 1. Template 1; 11. Fixed mold core; 12. Inclined guide post; 13. Fixed block; 14. Slide groove; 2. Template 2; 21. Moving mold core; 22. Slider; 221. Spring pin; 222. Insert pin; 223. Limiting groove; 224. Sliding piece; 23. Guide groove; 231. Limiting post; 24. Pressure strip; 25. Spring pressure block; 26. Slider wear-resistant block 1; 27. Slider wear-resistant block 2; 28. Limiting spring block; 29. Limiting block. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example
[0030] like Figure 1-5 As shown, an embodiment of the present invention provides a translational two-color molding mold, including a template 1 and a template 2. The template 1 has at least two fixed mold cores 11 inside, and the template 2 has a movable mold core 21 that matches the fixed mold cores 11 inside. The bottom of the template 2 has a slider 22 that extends into the movable mold core 21. The top of the template 1 has an inclined guide post 12 that matches the slider 22.
[0031] like Figure 1-5 As shown, in some embodiments, the number of inclined guide pillars 12 is two sets, corresponding to two fixed mold cores 11 respectively, and the number of inclined guide pillars 12 in each set is the same as the number of sliders 22.
[0032] The number of inclined guide pillars 12 corresponds to the number of sliders 22. After the moving mold core 21 separates from the fixed mold core 11, the inclined guide pillars 12 drive the sliders 22 to slide sideways and disengage from the interior of the moving mold core 21, thus completing the demolding of the side features of the product.
[0033] like Figure 1-5 As shown, in some embodiments, the bottom end of the inclined guide post 12 is fixed to the template 1 by a fixing block 13, and two sliding grooves 14 are symmetrically arranged on both sides of the inclined guide post 12.
[0034] The design of the slide groove 14, together with the limiting post 231, ensures the stability of the slider 22 during the process of the inclined guide post 12 driving the slider 22.
[0035] like Figure 1-5 As shown, in some embodiments, a guide groove 23 is provided inside one end of the slider 22, the top end of the inclined guide post 12 extends into the interior of the guide groove 23, and limit posts 231 are provided on both sides of the inner wall of the guide groove 23. The opposite ends of the two limit posts 231 extend into the interior of the sliding grooves 14 on both sides of the inclined guide post 12.
[0036] The guide groove 23 is U-shaped. This design is more conducive to installing the oblique guide rod compared to the commonly used hole-shaped oblique guide rod groove on the market.
[0037] like Figure 1-5 As shown, in some embodiments, spring blocks 25 are provided on both sides of the slider 22, and the end of the limiting post 231 away from the slide groove 14 abuts against the end of the spring block 25.
[0038] The spring block 25 includes a block and a spring. One end of the spring abuts against the block and the other end abuts against the limiting post 231, so that one end of the limiting post 231 is continuously and stably locked into the interior of the slide groove 14. When it is necessary to unlock the assembly of the inclined guide rod and the slider 22, press one end of the limiting post 231 to compress the spring and disengage it from the interior of the slide groove 14.
[0039] like Figure 1-5 As shown, in some embodiments, the slider 22 has a spring pin 221 and an insert pin 222 located on one side of the spring pin 221 inside the end away from the guide groove 23. The slider 22 also has a slider wear-resistant block 26 at one end. One end of the spring pin 221 extends into the interior of the slider wear-resistant block 26. The bottom of the template 2 is fixedly provided with a slider wear-resistant block 27. The slider wear-resistant block 27 is movably provided with a limiting spring block 28 inside. The top of the slider 22 is provided with at least two limiting grooves 223. One end of the limiting spring block 28 extends into the interior of one of the limiting grooves 223.
[0040] The two limiting grooves 223 correspond to the pull-out position and the mold closing position of the slider 22, respectively. The limiting spring block 28 includes a spring and a cone block. One end of the cone block is subjected to the elastic force continuously applied by the spring, causing the other end to be inserted into the interior of the limiting groove 223. As the slider 22 moves, it compresses the spring and is locked into the other limiting groove 223, thereby locking the pull-out position and the mold closing position of the slider 22.
[0041] like Figure 1-5As shown, in some embodiments, sliding pieces 224 are provided on both sides of the slider 22, and pressure strips 24 are fixedly provided at the bottom of the template 2. The number of pressure strips 24 and sliding pieces 224 are the same and correspond one-to-one. The top of the pressure strip 24 is slidably connected to the bottom of the sliding piece 224. Limiting blocks 29 are fixedly provided on both sides of the template 2. The limiting blocks 29 are located at the end of the slider 22 away from the moving mold core 21.
[0042] The limit block 29 restricts the maximum pull-out position of the slider 22, preventing it from completely detaching from the mold and improving the safety of equipment use. The setting of the pressure bar 24 ensures the stability of the slider 22 during the sliding process.
[0043] In use, template 2 is driven by a hydraulic motor to drive a rack or gear, which causes the moving mold core 21 to slide left and right between the two fixed mold cores 11 to switch. In use, during the first injection molding, the moving mold core 21 closes with the first fixed mold core 11, and the first injection device injects the first type of plastic raw material into the closed mold. The plastic raw material cools and solidifies in the mold to form the first part of the product.
[0044] Mold separation and translation of moving mold core 21: After the first plastic solidifies, moving mold core 21 and fixed mold core 11 separate. The first part of the product that has been formed is still attached to moving mold core 21 and moves together with moving mold core 21 to the position of the second fixed mold core 11.
[0045] In the second injection molding, the moving mold core 21 and the second fixed mold core 11 close together, and the second set of injection devices injects the second type of plastic material into the mold containing the first part of the product. The two plastics combine in the mold to form a complete two-color or two-material product.
[0046] After the product is removed and the second type of plastic solidifies, the injection molding machine opens the mold, and the complete two-color or two-material product is removed from the mold.
[0047] In summary, the two-color injection molding achieved by the translational switching of the moving mold core 21 significantly improves production efficiency and reduces equipment investment. Its modular design effectively reduces scrap rate and secondary processing costs, while ensuring the accuracy of the bonding surface between the two materials. The inclined guide post 12 and the slider 22 achieve stable lateral demolding, enabling the product to present complex color separation effects. The combined application of materials with different performance properties can take into account both aesthetic appearance and functional requirements, meeting diverse market demands.
[0048] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A translational two-color molding mold comprising a mold plate one (1) and a mold plate two (2), characterized in that: The template one (1) has at least two fixed mold cores (11) inside, the template two (2) has a movable mold core (21) that matches the fixed mold core (11) inside, the bottom of the template two (2) has a slider (22) that extends into the movable mold core (21) at one end, and the top of the template one (1) has an inclined guide post (12) that matches the slider (22).
2. A translational two-color molding mold according to claim 1, characterized by: The number of inclined guide pillars (12) is two sets, which correspond to two fixed mold cores (11) respectively. The number of inclined guide pillars (12) in each set is the same as the number of sliders (22).
3. A translational two-color molding mold according to claim 1, characterized by: The bottom end of the inclined guide post (12) is fixed to the template (1) by a fixing block (13), and two sliding grooves (14) are symmetrically arranged on both sides of the inclined guide post (12).
4. The translational two-color molding mold according to claim 1, characterized by: The slider (22) has a guide groove (23) inside one end, and the top of the inclined guide post (12) extends into the inside of the guide groove (23). Limiting posts (231) are provided on both sides of the inner wall of the guide groove (23), and the opposite ends of the two limiting posts (231) extend into the sliding grooves (14) on both sides of the inclined guide post (12).
5. A translational two-color molding mold according to claim 4, characterized by: Spring blocks (25) are provided on both sides of the slider (22), and the end of the limiting post (231) away from the slide groove (14) abuts against the end of the spring block (25).
6. A translational two-color molding mold according to claim 1, characterized by: The slider (22) is provided with a spring pin (221) and an insert pin (222) located on one side of the spring pin (221) at one end away from the guide groove (23). The slider (22) is also provided with a slider wear block (26) at one end, and one end of the spring pin (221) extends into the interior of the slider wear block (26).
7. A translational two-color molding mold according to claim 1, characterized by: The bottom of the template 2 (2) is fixedly provided with a slider wear-resistant block 2 (27), and the inside of the slider wear-resistant block 2 (27) is provided with a limit spring block (28).
8. A translational two-color molding mold according to claim 7, characterized by: The top of the slider (22) is provided with at least two limiting grooves (223), and one end of the limiting spring block (28) extends into the interior of one of the limiting grooves (223).
9. The translational two-color molding mold according to claim 1, characterized by: Sliding pieces (224) are provided on both sides of the slider (22), and pressure strips (24) are fixedly provided at the bottom of the template (2). The number of pressure strips (24) and sliding pieces (224) are the same and correspond one-to-one. The top of the pressure strip (24) is slidably connected to the bottom of the sliding piece (224).
10. The translational two-color molding mold according to claim 1, characterized by: Limiting blocks (29) are fixedly installed on both sides of the template (2), and the limiting blocks (29) are located at the end of the slider (22) away from the moving mold core (21).