Runner adjusting mechanism and injection mold

Abstract

The utility model relates to the technical field of molds, in particular to a runner adjusting mechanism and an injection mold. The runner adjusting mechanism comprises a first mold core and a flow adjusting device arranged on the first mold core, a runner and a cavity are arranged on the first mold core; the flow adjusting device comprises an adjusting gear, a driven gear and a section needle; the adjusting gear is meshed with the driven gear, and an adjusting part of the adjusting gear is exposed at the top of the first mold core; the section needle can movably penetrate through the driven gear, and the driven gear drives the section needle to stretch out or retract in the flow channel. The adjusting parts are exposed on the top of the first mold core, and a worker can adjust the flow of different runners by rotating different adjusting parts on the top surface of the first mold core. The design is convenient for workers to operate, and the adjustment is more convenient. And meanwhile, the quality of the product is better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a flow channel regulating mechanism and an injection mold. Background Art

[0002] When the injection mold is used to mold a product, the injected plastic flows through the main channel, then to the branch channel, and finally into the cavity. Due to slight differences in the injection points, this process can easily lead to asynchronous filling of the cavity, insufficient amount of molding material for the filled product, and problems such as product size differences and product shortages. In order to solve this problem, the usual practice is to control the flow of the flow channel, and the usual practice is to set a flow control component in the flow channel. During production, when debugging the mold, it is usually necessary to fine-tune the flow according to the situation of the finished product. However, some components that control the flow are not convenient to adjust.

[0003] For example, Chinese patent application number: CN201620005159.7 A component that is convenient for adjusting the flow of a hot runner, including a diverter plate, the diverter plate is provided with a main channel and multiple diverter channels that are interconnected, and also includes an insert and a throttle valve core for adjusting the flow of the diverter channel, the insert is fixed to one side of the diverter channel, one end of the throttle valve core is threadedly connected to the insert, and the other end of the throttle valve core is arranged at the corner of the diverter channel. Among them, a throttle valve core is provided on one side of each diverter channel. It can be seen that when multiple flow channels need to be adjusted, throttle valve cores need to be provided on all sides of the diverter plate. When adjusting the flow rate with this design, the technician needs to adjust in all directions, and the technician needs to keep changing positions, which is inconvenient to adjust. Utility Model Content

[0004] In view of this, the present invention aims at the deficiencies of the prior art, and its main purpose is to provide a flow channel regulating mechanism, which can not only regulate the flow rate but also makes the regulation more convenient, thereby overcoming the deficiencies of the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The present application provides a flow channel regulating mechanism, comprising a first mold core, and a flow regulating device arranged on the first mold core;

[0007] A flow channel and a cavity are provided on the first mold core; the flow regulating device includes an adjusting gear, a driven gear, and a cross-section needle; the adjusting gear and the driven gear are meshed, and the adjusting portion of the adjusting gear is exposed at the top of the first mold core; the cross-section needle can be movably passed through the driven gear, and the driven gear drives the cross-section needle to extend or retract in the flow channel.

[0008] Preferably, the driven gear is provided with a threaded hole, and the cross-section needle is provided with a thread.

[0009] Preferably, the left and right side surfaces of the cross-sectional needle are arc-shaped surfaces, and the front and back surfaces and the top surface of the cross-sectional needle are flat surfaces.

[0010] Preferably, the adjustment portion is one of an inner triangular hole, an inner quadrangular hole, an inner pentagonal hole, and an inner hexagonal hole.

[0011] Preferably, the flow channel comprises a main flow channel and a branch flow channel, and the branch flow channel is symmetrically connected to the main flow channel; the cross-sectional needle can be extended or retracted in the branch flow channel.

[0012] Preferably, the ends of the main channel and the branch channel have arc-shaped transition surfaces.

[0013] Preferably, a mounting groove is provided at the bottom of the first mold core, and the adjusting gear and the driven gear are arranged in the mounting groove.

[0014] The present application provides an injection mold, comprising the flow channel regulating mechanism, and a first mold and a second mold that can be closed together; the flow channel regulating mechanism is arranged on the first mold; the second mold core of the second mold is closed together with the first mold core.

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that the adjusting gear and the driven gear are meshed, and the adjusting part of the adjusting gear is exposed at the top of the first mold core; the cross-section needle can be movably inserted into the driven gear, and the driven gear drives the cross-section needle to extend or retract in the flow channel. The adjusting part is exposed at the top of the first mold core, so the worker can adjust the flow of different flow channels by rotating different adjusting parts on the top surface of the first mold core. This design is convenient for workers to operate and is more convenient to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the first embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of a flow regulating device according to the first embodiment of the present utility model.

[0018] Figure 3 It is a front view schematic diagram of the first embodiment of the utility model.

[0019] Figure 4 This is the first embodiment of the utility model Figure 3 AA cross-sectional view.

[0020] Figure 5 It is a perspective schematic diagram of the second embodiment of the utility model.

[0021] Description of the accompanying drawings:

[0022] 10. First mold core; 11. Main flow channel; 12. Branch flow channel; 13. Transition surface; 14. Cavity; 15. Mounting groove; 16. Second mold core; 20. Flow regulating device; 21. Adjusting gear; 22. Adjusting part; 23. Driven gear; 24. Threaded hole; 25. Thread; 210. Cross-section needle; 211. Arc surface; 212. Plane. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] Embodiment 1

[0025] Please refer to Figures 1 to 4 As shown, it shows the specific structure of the preferred embodiment of the utility model, which is a flow channel regulating mechanism.

[0026] Among them, the adjusting part 22 of the adjusting gear 21 is exposed at the top of the first mold core 10; when adjusting the flow rate, it is only necessary to rotate the adjusting part 22, and the driven gear 23 can drive the cross-sectional needle 210 to extend or retract in the flow channel, thereby realizing the flow rate adjustment, which is more convenient to operate.

[0027] The present application provides a flow channel regulating mechanism, including a first mold core 10, and a flow regulating device 20 arranged on the first mold core 10; the first mold core 10 is provided with a flow channel and a cavity 14; the flow regulating device 20 includes an adjusting gear 21, a driven gear 23, and a cross-section needle 210; the adjusting gear 21 and the driven gear 23 are meshed, and the adjusting portion 22 of the adjusting gear 21 is exposed at the top of the first mold core 10; the cross-section needle 210 can be movably passed through the driven gear 23, and the driven gear 23 drives the cross-section needle 210 to extend or retract in the flow channel. The flow regulating device 20 is used to adjust the flow of the flow channel. During adjustment, a wrench is inserted into the adjusting portion 22, the wrench drives the adjusting gear 21 to rotate, and the adjusting gear 21 drives the driven gear 23. Since the cross-section needle 210 with the thread 25 is screwed into the threaded hole 24 on the driven gear 23, when the driven gear 23 rotates, the cross-section needle 210 will extend or retract in the driven gear 23, thereby allowing the cross-section needle 210 to extend or retract in the flow channel to achieve the purpose of flow regulation. Since the adjustment portion 22 of the adjustment gear 21 is exposed at the top of the first mold core 10, the technician only needs to stand in front of the mold to adjust different flow regulating devices 20, which is very convenient and efficient.

[0028] Preferably, the left and right sides of the cross-sectional needle 210 are arcuate surfaces 211, and the front and back surfaces and the top surface of the cross-sectional needle 210 are plane surfaces 212. The first mold core 10 is provided with a first hole, and the cross-sectional needle 210 passes through or retracts in the first hole. The arcuate surface 211 faces the flow direction of the injection plastic, or faces the flow direction of the injection plastic. This design can reduce the impact force of the injection plastic on the cross-sectional needle 210 and improve the service life of the component. The front and back surfaces and the top surface of the cross-sectional needle 210 are plane surfaces 212, which are in close contact with the flow channel and have good sealing performance.

[0029] Preferably, the adjusting portion 22 is one of an inner triangular hole, an inner quadrangular hole, an inner pentagonal hole, and an inner hexagonal hole. In this embodiment, the adjusting portion 22 is an inner hexagonal hole. A hexagonal wrench can directly rotate the adjusting gear 21.

[0030] Preferably, the flow channel includes a main flow channel 11 and a branch flow channel 12, and the branch flow channel 12 is symmetrically connected to the main flow channel 11; the cross-sectional needle 210 can be extended or retracted in the branch flow channel 12. This flow channel design is conducive to uniform flow of the flow channel, and the injection plastic of each branch flow channel 12 is equal.

[0031] Preferably, the ends of the main channel 11 and the branch channel 12 have arc-shaped transition surfaces 13. Providing the transition surface 13 allows the injection plastic to be injected into the mold cavity 14 at a relatively gentle speed, which is more conducive to ensuring product quality.

[0032] Preferably, a mounting groove 15 is provided at the bottom of the first mold core 10, and the adjusting gear 21 and the driven gear 23 are arranged in the mounting groove 15. When the first mold core 10 and the lower mold plate are assembled together, the lower mold plate restricts the adjusting gear 21 and the driven gear 23 in the mounting groove 15, and this mounting structure is simpler and more efficient.

[0033] Embodiment 2

[0034] The present application provides an injection mold, including the flow channel regulating mechanism, and a first mold and a second mold that can be closed together; the flow channel regulating mechanism is arranged in the first mold; the second mold core of the second mold is closed together with the first mold core 10. After the first mold and the second mold are closed, the injection material is injected from the injection port, and the product enters the cavity 14 through the main flow channel 11 and the branch flow channel 12. Since the branch flow channel 12 is provided with a flow channel regulating mechanism, the flow of each branch flow channel 12 can be better controlled, which is more conducive to ensuring the quality of the product.

[0035] In summary, the design focus of the utility model is that the adjusting gear 21 and the driven gear 23 are meshed, and the adjusting portion 22 of the adjusting gear 21 is exposed at the top of the first mold core 10; the cross-section needle can be movably inserted into the driven gear 23, and the adjusting portion 22 is exposed at the top of the first mold core 10. The technician can adjust the flow of different flow channels by rotating different adjusting portions 22 on the top surface of the first mold core 10 on the front of the mold. This adjustment structure is simple and more convenient to adjust.

[0036] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A flow channel adjustment mechanism, characterized in that: It includes a first mold core and a flow regulating device arranged on the first mold core; the first mold core is provided with a flow channel and a cavity; the flow regulating device includes a regulating gear, a driven gear, and a cross-section needle; The adjusting gear is meshed with the driven gear, and the adjusting portion of the adjusting gear is exposed at the top of the first mold core; the cross-section needle can be movably passed through the driven gear, and the driven gear drives the cross-section needle to extend or retract in the flow channel.

2. A flow channel regulating mechanism according to claim 1, characterized in that: The driven gear is provided with a threaded hole, and the cross-section pin is provided with threads.

3. A flow channel regulating mechanism according to claim 1, characterized in that: The left and right side surfaces of the cross-section needle are arc-shaped surfaces, and the front, back and top surfaces of the cross-section needle are flat surfaces.

4. A flow channel regulating mechanism according to claim 1, characterized in that: The adjusting portion is one of an inner triangular hole, an inner quadrangular hole, an inner pentagonal hole, and an inner hexagonal hole.

5. A flow channel regulating mechanism according to claim 1, characterized in that: The flow channel comprises a main flow channel and a branch flow channel, and the branch flow channel is symmetrically connected to the main flow channel; the cross-sectional needle can be extended or retracted in the branch flow channel.

6. A flow channel regulating mechanism according to claim 5, characterized in that: The ends of the main flow channel and the branch flow channel have arc-shaped transition surfaces.

7. A flow channel regulating mechanism according to claim 1, characterized in that: A mounting groove is arranged at the bottom of the first mold core, and the adjusting gear and the driven gear are arranged in the mounting groove.

8. An injection mold, characterized in that: It comprises the flow channel regulating mechanism described in any one of claims 1 to 7, and a first mold and a second mold that can be closed together; the flow channel regulating mechanism is arranged in the first mold; the second mold core of the second mold is closed together with the first mold core.

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