A two-color mold structure with independent rotating mold plate

Abstract

The utility model relates to injection mold technical field discloses a kind of two-color mold structure of independent rotating template, including water transport insert, the top outer wall of water transport insert is fixedly installed with template, the front side inner wall of template is fixedly connected with oil cylinder two, the top outer wall of water transport insert is slidably connected with sliding block, the top outer wall of template is fixedly installed with rear mould kernel, the top outer wall of water transport insert is fixedly installed with rotating shaft, the top outer wall of water transport insert is fixedly installed with gear sleeve, the side surface outer wall of gear sleeve is contacted with rack, the front side outer wall of rack is fixedly connected with oil cylinder one.In the utility model, through the meshing transmission structure cooperation rotating shaft setting of gear sleeve and rack, linear power can be converted into rotary power to realize the rotation of template and supporting mold parts Change position, while relying on the guiding effect of guide rod, the accuracy and stability of rotating action are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a two-color mold structure with an independent rotating template. Background Technology

[0002] Two-color mold structure is the core carrier for realizing two-color injection molding. It refers to a mold structure system that can inject two different plastic materials (or the same material but different colors) on the same two-color injection molding machine, and mold them in two stages but only eject them once. Its core revolves around the movement of the semi-finished product in the mold or the rotation of the mold body to realize secondary injection molding. It is mainly divided into three mainstream types: core rotation type, core retraction type, and push plate rotation type. It also includes special structures such as seesaw, middle plate mold, and "twin" for special products.

[0003] In two-color mold structures, the core rotation type is the most commonly used structure, which is further divided into split type and one-piece type. The split type completes the molding by cooperating with two molds, while the one-piece type is achieved in one mold. During operation, the moving mold part will rotate 180° with the injection molding machine turntable, so that the semi-finished product of the first injection is transferred from the first cavity to the second cavity to complete the second injection. The two cores of the male mold are completely identical in shape, while the female mold corresponds to two different molding surfaces.

[0004] The two-color mold structure has the following defects: some two-color products require color changes for both the front and rear molds. Conventional two-color molds cannot achieve color changes by rotating the rear mold as a whole, so both the front and rear molds need to be changed, resulting in different rear molds, which leads to cumbersome operation and affects efficiency. To solve the above problems, a two-color mold structure with an independent rotating template is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a two-color mold structure with an independent rotating template, which aims to improve the problem that in the prior art, some two-color products require color changes for both the front and rear molds. Conventional two-color molds cannot achieve color changes by rotating the rear mold as a whole, and both the front and rear molds need to be changed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a two-color mold structure with an independent rotating template, comprising a water-transporting insert, a template fixedly installed on the top outer wall of the water-transporting insert, a second hydraulic cylinder fixedly connected to the front inner wall of the template, a slider slidably connected to the top outer wall of the water-transporting insert, a rear mold core fixedly installed on the top outer wall of the template, a rotating shaft fixedly installed on the top outer wall of the water-transporting insert, a gear sleeve fixedly installed on the top outer wall of the water-transporting insert, a rack contacting the side outer wall of the gear sleeve, a first hydraulic cylinder fixedly connected to the front outer wall of the rack, and a guide rod fixedly installed on the side outer wall of the water-transporting insert.

[0007] As a further description of the above technical solution: the hydraulic cylinder is fixedly connected to the bottom outer wall of the template.

[0008] As a further description of the above technical solution: the outer side walls of the slider, gear sleeve, and rack are all coated with lubricating oil.

[0009] As a further description of the above technical solution: a rear mold insert is fixedly installed on the bottom outer wall of the template, and a rear mold ejector pin is fixedly installed on the bottom outer wall of the template.

[0010] As a further description of the above technical solution: an ejector plate is fixedly installed on the bottom inner wall of the template, and a rear mold insert seat is fixedly installed on the bottom inner wall of the template.

[0011] As a further description of the above technical solution: transmission lines are fixedly connected to the outer side walls of the second and first oil cylinders, and the transmission lines are respectively plugged into the outer side walls of the template.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the meshing transmission structure of the gear sleeve and rack, combined with the rotating shaft, can convert linear power into rotational power to realize the rotational repositioning of the template and supporting mold components. At the same time, the guiding effect of the guide rod ensures the accuracy and stability of the rotational action, effectively optimizes the transmission process of the two-color injection molding color change process, improves the positional accuracy of two-color injection molding, and the design of the independent rotating template simplifies the overall transmission structure layout of the mold and reduces the operational difficulty of mold assembly and debugging.

[0013] 2. In this utility model, by applying lubricating oil to the surfaces of moving parts such as sliders, gear sleeves, and racks, the frictional resistance between parts can be effectively reduced, the wear of parts can be reduced, and the service life of the mold can be extended. At the same time, with the help of the linkage demolding structure of the hydraulic cylinder driving ejector plate and the rear mold ejector, the product can be ejected smoothly, which not only improves the demolding efficiency of the product, but also avoids problems such as deformation and scratches of the product during the demolding process, thus ensuring the molding quality of the two-color injection molded product. Attached Figure Description

[0014] Figure 1 This is a schematic front view of the overall structure of a two-color mold with an independent rotating template proposed in this utility model. Figure 2 This is a split diagram of a two-color mold structure with an independent rotating template proposed in this utility model; Figure 3 This is a cross-sectional schematic diagram of a two-color mold structure with an independent rotating template proposed in this utility model.

[0015] Legend: 1. Water channel insert; 2. Hydraulic cylinder II; 3. Slider; 4. Rear mold core; 5. Rotating shaft; 6. Gear sleeve; 7. Template; 8. Rack; 9. Hydraulic cylinder I; 10. Guide rod; 11. Rear mold insert; 12. Rear mold ejector pin; 13. Ejector plate; 14. Rear mold insert base. Detailed Implementation

[0016] 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.

[0017] Reference Figures 1-3 This utility model provides an embodiment of a two-color mold structure with an independent rotating template, including a water-carrying insert 1. A template 7 is fixedly installed on the top outer wall of the water-carrying insert 1. The template 7 serves as the core load-bearing component of the mold and provides a stable support foundation for the subsequent installation of mold parts through its fixed connection with the water-carrying insert 1. A hydraulic cylinder 2 is fixedly connected to the front inner wall of the template 7. A slider 3 is slidably connected to the top outer wall of the water-carrying insert 1. A rear mold core 4 is fixedly installed on the top outer wall of the template 7 and is fixed to the top of the template 7. The water-carrying insert 1 is a key component that forms the mold cavity and directly determines the product's molded shape and dimensional accuracy. A rotating shaft 5 is fixedly installed on the top outer wall of the water-carrying insert 1, and a gear sleeve 6 is fixedly installed on the top outer wall of the water-carrying insert 1. The gear sleeve 6 is fixedly connected to the water-carrying insert 1 and can mesh with the rack 8 to transmit power, converting the linear motion of the rack 8 into the rotational motion of the rotating shaft 5. The side outer wall of the gear sleeve 6 contacts the rack 8, and a hydraulic cylinder 9 is fixedly connected to the front outer wall of the rack 8. A guide rod 10 is fixedly installed on the side outer wall of the water-carrying insert 1.

[0018] Reference Figures 1-3 The outer side walls of slider 3, gear sleeve 6, and rack 8 are all coated with lubricating oil. Applying lubricating oil to the outer side walls of slider 3, gear sleeve 6, and rack 8 can reduce the frictional resistance between the components, reduce the wear of the components, and improve the smoothness of movement and service life. The bottom outer wall of template 7 is fixedly installed with a rear mold insert 11 and a rear mold ejector pin 12. The rear mold ejector pin 12 is fixed at the bottom of template 7 and can eject the formed product under the drive of hydraulic cylinder 2, realizing the separation of the product from the mold and completing the demolding process.

[0019] Reference Figures 1-3Hydraulic cylinder 9 is fixedly connected to the bottom outer wall of template 7. Ejector plate 13 is fixedly installed on the bottom inner wall of template 7. Rear mold insert seat 14 is fixedly installed on the bottom inner wall of template 7. Rear mold insert seat 14 is fixed to the bottom inner wall of template 7 to provide installation support and positioning for rear mold insert 11, ensuring the installation accuracy and stability of rear mold insert 11. Transmission lines are fixedly connected to the side outer walls of hydraulic cylinder 2 and hydraulic cylinder 9. Connecting transmission lines to the side outer walls of hydraulic cylinder 2 and hydraulic cylinder 9 can realize the transmission of hydraulic signals or control signals to hydraulic cylinder 2 and hydraulic cylinder 9, ensuring precise control of the hydraulic cylinder action. The transmission lines are respectively plugged into the side outer walls of template 7.

[0020] Working principle: After the first color is injected and the mold is opened, the front and rear molds separate, the slider 3 opens, and the ejector pin lifts the rotating shaft 5. The hydraulic cylinder 9 drives the rack 8, which in turn drives the gear, which in turn drives the rotating shaft 5 to rotate. This rotates the template 7, the rear mold core 4, the slider 3, and the product together by 180 degrees to complete the color change. After the color change is completed, the ejector pin pulls the template 7, the rear mold core 4, the slider 3, and the product back to their original positions. When the mold is closed, the slider 3 is reset to its original position, completing the second injection. The mold is then opened, the slider 3 opens, and the hydraulic cylinder 2 pushes the ejector plate 13, which ejects the product. Then, the next injection cycle begins.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A two-color mold structure with an independent rotating template, comprising a water-transporting insert (1), characterized in that: A template (7) is fixedly installed on the top outer wall of the water-carrying insert (1). A second oil cylinder (2) is fixedly connected to the front inner wall of the template (7). A slider (3) is slidably connected to the top outer wall of the water-carrying insert (1). A rear mold core (4) is fixedly installed on the top outer wall of the template (7). A rotating shaft (5) is fixedly installed on the top outer wall of the water-carrying insert (1). A gear sleeve (6) is fixedly installed on the top outer wall of the water-carrying insert (1). A rack (8) contacts the side outer wall of the gear sleeve (6). A first oil cylinder (9) is fixedly connected to the front outer wall of the rack (8). A guide rod (10) is fixedly installed on the side outer wall of the water-carrying insert (1).

2. The dual-color mold structure of an independent rotating template according to claim 1, characterized in that: The hydraulic cylinder (9) is fixedly connected to the bottom outer wall of the template (7).

3. The dual-color mold structure of an independent rotating template according to claim 1, characterized in that: The outer side walls of the slider (3), gear sleeve (6), and rack (8) are all coated with lubricating oil.

4. The dual-color mold structure of an independent rotating template according to claim 1, characterized in that: The bottom outer wall of the template (7) is fixedly installed with a rear mold insert (11) and a rear mold ejector pin (12).

5. The dual-color mold structure of an independent rotating template according to claim 1, characterized in that: The bottom inner wall of the template (7) is fixedly installed with an ejector plate (13) and a rear mold insert seat (14).

6. The dual-color mold structure of an independently rotating template according to claim 1, characterized in that: The outer side walls of the second (2) and the first (9) of the hydraulic cylinder are fixedly connected with transmission lines, which are respectively plugged into the outer side walls of the template (7).

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