Sprue structure of injection mold

Abstract

The sprue structure of the injection mold comprises a first mold block and a second mold block, the top of the second mold block is fixedly connected with a sprue pipe, the top of the sprue pipe is provided with a groove, the interior of the groove is in sliding connection with a sliding block, the top of the sliding block is fixedly connected with an adjusting plate, and the top of the adjusting plate is in sliding connection with a rotating pipe. An inclined groove is formed in the rotating pipe, a sliding rod is slidably connected into the inclined groove, the sliding rod is fixedly connected with the adjusting plate, and the first limiting groove and the first limiting plate are each of an annular structure. According to the pouring gate structure of the injection mold, a servo motor is started to drive a gear to rotate, the gear drives a rotating pipe to rotate through an outer gear ring, the rotating pipe extrudes a sliding rod through an inclined groove, so that the sliding rod drives adjusting plates to move, and due to the fact that six adjusting plates are attached to one another, an opening for injection liquid to pass through is formed in the middle; and the diameter of the injection molding liquid can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and more specifically, to a gate structure for an injection mold. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding include high production speed and efficiency, automated operation, a wide variety of designs and shapes (from simple to complex), and sizes ranging from large to small. It also produces dimensionally accurate products, facilitates product updates and replacements, and can create complex shapes. Injection molding is suitable for mass production and molding processes involving complex shapes.

[0003] Injection molds are commonly used in the production of plastic products as shaping containers. Some existing injection molds have straight pipe gates, which make it difficult to adjust the gate diameter, resulting in waste of injection liquid. Therefore, we provide a gate structure for injection molds. Utility Model Content

[0004] The purpose of this invention is to provide a gate structure for injection molds to solve the problems mentioned in the background art.

[0005] Many existing injection molds have straight pipe gates, making it difficult to adjust the gate diameter, which leads to waste of injection molding liquid.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gate structure for an injection mold includes a first mold block and a second mold block. A gate pipe is fixedly connected to the top of the second mold block. A groove is formed on the top of the gate pipe. A slider is slidably connected inside the groove. An adjusting plate is fixedly connected to the top of the slider. A rotating tube is slidably connected to the top of the adjusting plate. An inclined groove is formed inside the rotating tube. A sliding rod is slidably connected inside the inclined groove. The sliding rod is fixedly connected to the adjusting plate.

[0008] Preferably, the groove has a regular hexagonal structure.

[0009] Preferably, a funnel is rotatably connected inside the rotating tube, a first limiting groove is provided inside the rotating tube, a first limiting plate is slidably connected inside the first limiting groove, the first limiting plate is fixedly connected to the funnel, and both the first limiting groove and the first limiting plate are annular structures.

[0010] Preferably, the outer wall of the funnel is in contact with the inner wall of the rotating tube.

[0011] Preferably, a mounting plate is fixedly connected to the outside of the gating pipe, a servo motor is fixedly connected to the bottom of the mounting plate, the output shaft of the servo motor vertically passes through the mounting plate and extends to the top of the mounting plate, the output shaft of the servo motor is rotatably connected to the mounting plate, a gear is fixedly connected to the output end of the servo motor, and an external gear ring is fixedly connected to the outside of the rotating pipe, the external gear ring meshing with the gear.

[0012] Preferably, the rotating tube has a second limiting groove inside, and a second limiting block is slidably connected inside the second limiting groove. The second limiting block is fixedly connected to the sprue pipe, and the second limiting groove has an arc-shaped structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The servo motor starts and drives the gear to rotate. The gear drives the rotating tube to rotate through the external gear ring. The rotating tube squeezes the slide rod through the inclined groove, causing the slide rod to move the adjustment plate. Since the six adjustment plates fit together, a hole for the injection liquid is formed in the middle. When these six adjustment plates move at the same time, the diameter of the injection liquid can be adjusted. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the external gear ring of this utility model;

[0017] Figure 3 This is a schematic diagram of the rotating tube of this utility model;

[0018] Figure 4 This is a schematic diagram of the groove structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the adjusting plate of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the funnel of this utility model.

[0021] The following are the labels in the diagram: 1. First mold block; 2. Second mold block; 3. Sprue pipe; 4. Groove; 5. Slider; 6. Adjusting plate; 7. Rotating tube; 8. Inclined groove; 9. Sliding rod; 10. Funnel; 11. First limiting groove; 12. First limiting plate; 13. Mounting plate; 14. Servo motor; 15. Gear; 16. External gear ring; 17. Second limiting groove; 18. Second limiting block. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 6 A gate structure for an injection mold includes a first mold block 1 and a second mold block 2. A gate pipe 3 is fixedly connected to the top of the second mold block 2. Molding liquid enters the first mold block 1 and the second mold block 2 through the gate pipe 3. A groove 4 is provided on the top of the gate pipe 3. A slider 5 is slidably connected inside the groove 4. An adjusting plate 6 is fixedly connected to the top of the slider 5. A rotating pipe 7 is slidably connected to the top of the adjusting plate 6. An inclined groove 8 is provided inside the rotating pipe 7. A sliding rod 9 is slidably connected inside the inclined groove 8. The sliding rod 9 is fixedly connected to the adjusting plate 6. When the rotating pipe 7 rotates, the adjusting plate 6 moves through the inclined groove 8 and the sliding rod 9, thereby adjusting the diameter of the injection mold.

[0024] Furthermore, the groove 4 has a regular hexagonal structure, and six sliders 5 are provided inside the groove 4. Similarly, six sets of adjusting plates 6, inclined grooves 8, and sliding rods 9 are also provided. When the rotating tube 7 rotates, the inclined groove 8 will squeeze the sliding rods 9, and the sliding rods 9 will drive the adjusting plate 6 to move. Due to the restriction of the groove 4 and sliders 5, the adjusting plate 6 can only move in a straight line. Moreover, the six adjusting plates 6 fit together so that an opening for the injection liquid is formed in the middle of the six adjusting plates 6.

[0025] Furthermore, a funnel 10 is rotatably connected inside the rotating tube 7, and a first limiting groove 11 is provided inside the rotating tube 7. A first limiting plate 12 is slidably connected inside the first limiting groove 11. The first limiting plate 12 is fixedly connected to the funnel 10. Both the first limiting groove 11 and the first limiting plate 12 are annular structures. The first limiting groove 11 and the first limiting plate 12 are used to limit the distance between the funnel 10 and the rotating tube 7, so that the funnel 10 will not separate from the rotating tube 7.

[0026] Furthermore, the outer wall of the funnel 10 is fitted to the inner wall of the rotating tube 7, and the funnel 10 and the rotating tube 7 are tightly fitted together, so that the funnel 10 will not shake back and forth inside the rotating tube 7.

[0027] Furthermore, a mounting plate 13 is fixedly connected to the outside of the sprue pipe 3. A servo motor 14 is fixedly connected to the bottom of the mounting plate 13. The output shaft of the servo motor 14 passes vertically through the mounting plate 13 and extends to the top of the mounting plate 13. The output shaft of the servo motor 14 is rotatably connected to the mounting plate 13. A gear 15 is fixedly connected to the output end of the servo motor 14. An external gear ring 16 is fixedly connected to the outside of the rotating pipe 7. The external gear ring 16 meshes with the gear 15. The servo motor 14 directly drives the gear 15 to rotate. The gear 15 drives the rotating pipe 7 to rotate as a whole through the external gear ring 16. When the rotating pipe 7 rotates as a whole, it will drive the adjusting plate 6 to move, thereby adjusting the diameter of the injection molding liquid.

[0028] Furthermore, a second limiting groove 17 is provided inside the rotating tube 7, and a second limiting block 18 is slidably connected inside the second limiting groove 17. The second limiting block 18 is fixedly connected to the gating tube 3. The second limiting groove 17 has an arc-shaped structure, and six sets of the second limiting groove 17 and the second limiting block 18 are symmetrically arranged. The stability between the rotating tube 7 and the gating tube 3 is ensured by the second limiting groove 17 and the second limiting block 18.

[0029] The steps of using this utility model are as follows: When the gate structure of this injection mold is in use, the servo motor 14 starts and drives the gear 15 to rotate. The gear 15 drives the rotating tube 7 to rotate through the external gear ring 16. The rotating tube 7 squeezes the slide rod 9 through the inclined groove 8, so that the slide rod 9 drives the adjusting plate 6 to move. Since the six adjusting plates 6 are in close contact with each other, a hole for the injection liquid to pass through is formed in the middle. When these six adjusting plates 6 move at the same time, the size of the hole through which the injection liquid passes can be adjusted.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gate structure of an injection mold, comprising a first mold block (1) and a second mold block (2), a gate tube (3) being fixedly connected to the top of the second mold block (2), characterized in that: The top of the sprue pipe (3) is provided with a groove (4), and a slider (5) is slidably connected inside the groove (4). An adjusting plate (6) is fixedly connected to the top of the slider (5). A rotating pipe (7) is slidably connected to the top of the adjusting plate (6). An inclined groove (8) is provided inside the rotating pipe (7). A sliding rod (9) is slidably connected inside the inclined groove (8). The sliding rod (9) is fixedly connected to the adjusting plate (6).

2. A gate structure for an injection mold according to claim 1, wherein: The groove (4) has a regular hexagonal structure.

3. The gate structure of an injection mold according to claim 1, wherein: The rotating tube (7) is rotatably connected to a funnel (10). The rotating tube (7) is provided with a first limiting groove (11). The first limiting groove (11) is slidably connected to a first limiting plate (12). The first limiting plate (12) is fixedly connected to the funnel (10). The first limiting groove (11) and the first limiting plate (12) are both annular structures.

4. A gate structure for an injection mold as defined in claim 3, wherein: The outer wall of the funnel (10) is in contact with the inner wall of the rotating tube (7).

5. The gate structure of an injection mold according to claim 1, wherein: The outside of the gating pipe (3) is fixedly connected to a mounting plate (13), and the bottom of the mounting plate (13) is fixedly connected to a servo motor (14). The output shaft of the servo motor (14) passes vertically through the mounting plate (13) and extends to the top of the mounting plate (13). The output shaft of the servo motor (14) is rotatably connected to the mounting plate (13). The output end of the servo motor (14) is fixedly connected to a gear (15). The outside of the rotating pipe (7) is fixedly connected to an external gear ring (16), and the external gear ring (16) meshes with the gear (15).

6. The gate structure of an injection mold according to claim 1, wherein: The rotating tube (7) has a second limiting groove (17) inside, and a second limiting block (18) is slidably connected inside the second limiting groove (17). The second limiting block (18) is fixedly connected to the gating pipe (3), and the second limiting groove (17) has an arc-shaped structure.

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