Injection mold ejection mechanism

Abstract

The utility model discloses an injection mold ejection mechanism which comprises a base, a fixed mold is fixedly connected to the upper surface of the base, a movable mold is arranged on the upper side of the fixed mold, and the injection mold ejection mechanism further comprises an ejection assembly. The ejection assembly comprises a movable plate, an ejector pin, a mounting plate, sliding blocks and ejection columns, the movable plate is slidably connected to the interior of the base, the symmetrically-distributed ejection columns are fixedly connected to the front side and the rear side of the upper surface of the movable plate, sliding grooves are formed in the left surface and the right surface of the interior of the base, and the sliding blocks are slidably connected into the sliding grooves; according to the ejection mechanism of the injection mold, through the ejection assembly, when a formed material needs to be ejected out, the push rod is pushed to directly eject out the movable mold, meanwhile, the formed material is ejected out, and the ejection efficiency is improved. The process of taking down the movable mold and ejecting the materials after the materials are formed is simplified, the injection molding production period is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an ejection mechanism for injection molds. Background Technology

[0002] Injection molds are specialized tools used in plastic injection molding processes. They are used to inject heated and molten plastic into a mold cavity, which then cools and solidifies to obtain the finished product. Injection molds are widely used to produce plastic parts and products, and are particularly suitable for mass production of products with complex geometries and high precision requirements, such as automotive parts, electronic housings, home appliances, and toys. After injection molding, the molded material may stick to the inside of the molding cavity, requiring an ejection mechanism to remove the molded material.

[0003] In existing injection molds, after the material is formed, the moving mold needs to be removed first, then the push rod is pushed to move the ejector pin, so that the ejector pin ejects the formed material, and then the return spring provides elastic force to reset the ejector pin;

[0004] Existing injection mold ejection mechanisms require removing the moving mold after injection molding before pushing the ejector pin to eject the molded material, which increases the injection molding production cycle and is not conducive to high-efficiency production. Therefore, we propose an injection mold ejection mechanism. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide an ejection mechanism for injection molds. Through the ejection component, when it is necessary to eject the molded material, the push rod can be pushed to directly eject the moving mold and eject the molded material at the same time. This simplifies the process of removing the moving mold and ejecting the material after the material is formed, reduces the injection molding production cycle, improves production efficiency, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ejection mechanism for an injection mold, including a base, a fixed mold fixedly connected to the upper surface of the base, a movable mold provided on the upper side of the fixed mold, and an ejection assembly;

[0007] Ejection assembly: It includes a movable plate, ejector pins, mounting plate, sliders, and ejector columns. The movable plate is slidably connected to the inside of the base. Ejector columns are symmetrically distributed and fixedly connected to the front and rear sides of the upper surface of the movable plate. The left and right surfaces of the inside of the base are provided with sliding grooves, and sliders are slidably connected in the sliding grooves. A mounting plate is fixedly connected between two sliders. Ejector pins are fixedly connected to the upper surface of the mounting plate. Through the ejection assembly, when it is necessary to eject the molded material, pushing the push rod can directly eject the moving mold and eject the molded material at the same time. This simplifies the process of removing the moving mold and ejecting the material after the material is formed, reduces the injection molding production cycle, and improves production efficiency.

[0008] Furthermore, the ejection assembly also includes spring one and spring two. Spring one is fixedly connected between the upper surface of the slider and the inner wall of the groove. Spring two is fixedly connected between the upper surface of the movable plate and the lower surface of the fixed mold. Spring two is sleeved on the outer surface of the vertically adjacent ejector pins, so that the ejection assembly automatically resets.

[0009] Furthermore, the upper surface of the fixed mold is fixedly connected with evenly distributed positioning posts, and the lower surface of the moving mold is provided with evenly distributed positioning grooves. The positioning posts are all inserted into vertically adjacent positioning grooves, which facilitates the connection between the fixed mold and the moving mold.

[0010] Furthermore, an injection port is provided in the middle of the upper surface of the moving mold, and molding cavities are symmetrically distributed on the lower surface of the moving mold and the upper surface of the fixed mold. A semi-circular diversion pipe is provided between two adjacent molding cavities in the lateral direction. The lower end of the injection port is connected to the diversion pipe on the upper side to introduce molten plastic into the molding cavity.

[0011] Furthermore, both the moving mold and the fixed mold are fixedly connected to liquid delivery pipes. The front surfaces of both the moving mold and the fixed mold are provided with symmetrically distributed liquid inlets, which are connected to the front ends of the longitudinally adjacent liquid delivery pipes. The rear surfaces of both the moving mold and the fixed mold are provided with symmetrically distributed liquid outlets, which are connected to the rear ends of the longitudinally adjacent liquid delivery pipes, thereby cooling the molten plastic entering the molding cavity.

[0012] Furthermore, the lower surface of the base is slidably connected with symmetrically distributed top rods, the upper ends of which are fixedly connected to the lower surface of the movable plate to facilitate pushing the movable plate.

[0013] Furthermore, a support column is fixedly connected between the upper surface of the base and the lower surface of the movable plate to support the fixed mold and prevent the fixed mold from denting or deforming after long-term use.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This injection mold ejection mechanism has the following advantages:

[0015] By using the ejector assembly, when it is necessary to eject the molded material, pushing the push rod can directly eject the moving mold and eject the molded material at the same time. This simplifies the process of removing the moving mold and ejecting the material after molding, reduces the injection molding production cycle, and improves production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0019] Figure 4 This is a top view cross-sectional structural diagram of the present invention.

[0020] In the diagram: 1. Base, 2. Moving mold, 3. Fixed mold, 4. Liquid inlet, 5. Injection port, 6. Ejector assembly, 61. Movable plate, 62. Ejector pin, 63. Mounting plate, 64. Slider, 65. Spring 1, 66. Spring 2, 67. Ejector pin, 7. Diversion pipe, 8. Molding cavity, 9. Positioning pin, 10. Positioning groove, 11. Liquid delivery pipe, 12. Supporting column, 13. Ejector rod. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This embodiment provides a technical solution: an injection mold ejection mechanism, including a base 1, a fixed mold 3 fixedly connected to the upper surface of the base 1, a movable mold 2 provided on the upper side of the fixed mold 3, uniformly distributed positioning pins 9 fixedly connected to the upper surface of the fixed mold 3, and uniformly distributed positioning grooves 10 opened on the lower surface of the movable mold 2. The positioning pins 9 are all inserted into vertically adjacent positioning grooves 10. When the positioning pins 9 are inserted into the positioning grooves 10, the lower surface of the movable mold 2 is in close contact with the upper surface of the fixed mold 3. An injection port 5 is opened in the middle of the upper surface of the movable mold 2. Both the lower surface of the movable mold 2 and the upper surface of the fixed mold 3 have symmetrically distributed molding cavities 8. A semi-circular diversion pipe 7 is opened between two horizontally adjacent molding cavities 8. The lower end of the injection port 5 is connected to the upper diversion pipe 7, and molten plastic is injected through the injection port 5. Molten plastic is injected into the injection mold through the injection port 5. The molten plastic flows into the molding cavity 8 through the diversion pipe 7. The interior of the moving mold 2 and the fixed mold 3 are both fixedly connected to the liquid delivery pipe 11. The front surfaces of the moving mold 2 and the fixed mold 3 are provided with symmetrically distributed liquid inlets 4. The liquid inlets 4 are all connected to the front end of the longitudinally adjacent liquid delivery pipe 11. The rear surfaces of the moving mold 2 and the fixed mold 3 are provided with symmetrically distributed liquid outlets. The liquid outlets are all connected to the rear end of the longitudinally adjacent liquid delivery pipe 11. The external coolant delivery pipe is connected to the liquid inlet 4. The coolant flows into the interior of the injection mold through the liquid delivery pipe 11, so that the coolant cools the molten plastic in the molding cavity and forms the molten plastic. The upper surface of the base 1 and the lower surface of the movable plate 61 are fixedly connected to the support column 12. The base 1 also includes an ejector assembly 6.

[0023] Ejection assembly 6 includes a movable plate 61, ejector pins 62, mounting plate 63, sliders 64, and ejector pillars 67. The movable plate 61 is slidably connected to the interior of the base 1. Ejector pillars 67 are symmetrically distributed and fixedly connected to both the front and rear sides of the upper surface of the movable plate 61. The left and right surfaces of the interior of the base 1 are provided with grooves, and sliders 64 are slidably connected within each groove. A mounting plate 63 is fixedly connected between two sliders 64. Ejector pins 62 are fixedly connected to the upper surface of the mounting plate 63. Ejection assembly 6 also includes spring 1 65 and spring 2 66. Spring 1 65 is fixedly connected between the upper surface of the slider 64 and the inner wall of the groove. Spring 2 66 is evenly distributed and fixedly connected between the upper surface of the movable plate 61 and the lower surface of the fixed mold 3. Spring 2 66 are all sleeved on the outer surface of vertically adjacent ejector pillars 67. The base 1... The lower surface of the mold has symmetrically distributed push rods 13. The upper ends of the push rods 13 are fixedly connected to the lower surface of the movable plate 61. Pushing the push rods 13 upward causes the movable plate 61 to move upward, which in turn causes the push post 67 to move upward. The second spring 66 contracts, and the upper end of the push post 67 presses the moving mold 2 upward, causing the moving mold 2 to move upward. The movable plate 61 continues to move upward, and the upper surface of the movable plate 61 contacts the lower surface of the mounting plate 63, causing the mounting plate 63 to move upward. This causes the slider 64 to move upward in the groove, and the first spring 65 contracts, causing the ejector pin 62 to move upward. The ejector pin pushes the molding material out of the molding cavity 8. Then, the push rods 13 are released, the second spring 66 relaxes, and the movable plate 61 moves downward to reset. The first spring 65 relaxes, and the mounting plate 63 moves downward to reset.

[0024] The working principle of the injection mold ejection mechanism provided by this utility model is as follows: When using the injection mold ejection mechanism, the positioning pin 9 is inserted into the positioning groove 10, so that the lower surface of the moving mold 2 is in close contact with the upper surface of the fixed mold 3. At this time, molten plastic is injected into the injection mold through the injection port 5. The molten plastic flows into the molding cavity 8 through the diversion pipe 7. The external coolant delivery pipe is connected to the inlet 4. The coolant flows into the injection mold through the delivery pipe 11, so that the coolant cools the molten plastic in the molding cavity, so that the molten plastic is formed. When performing the ejection operation of the molded material, the ejector pin 13 is pushed upward. The upward movement of ejector rod 13 causes the movable plate 61 to move upward, which in turn causes the ejector pin 67 to move upward. Spring 66 retracts, and the upper end of ejector pin 67 presses upward against the moving mold 2, causing the moving mold 2 to move upward. The movable plate 61 continues to move upward, and the upper surface of the movable plate 61 contacts the lower surface of the mounting plate 63, causing the mounting plate 63 to move upward. This causes the slider 64 to move upward within the groove. Spring 65 retracts, causing the ejector pin 62 to move upward. The ejector pin pushes the molding material out of the molding cavity 8. Then ejector rod 13 is released, spring 66 relaxes, and the movable plate 61 moves downward to reset. Spring 65 relaxes, and the mounting plate 63 moves downward to reset.

[0025] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An injection mold ejection mechanism comprising a base (1), the upper surface of the base (1) is fixedly connected with a fixed mold (3), the upper side of the fixed mold (3) is provided with a movable mold (2), characterized in that: Also include the ejection assembly (6); The ejection assembly (6) comprises a movable plate (61), a ejector pin (62), a mounting plate (63), a slider (64) and a ejector pin (67), the movable plate (61) is slidably connected to the inside of the base (1), the upper surface of the movable plate (61) is fixedly connected with the symmetrically distributed ejector pin (67) on both sides, the inside of the base (1) is provided with a sliding groove on both sides of the surface, the sliding groove is slidably connected with the slider (64), the two sliders (64) are fixedly connected with a mounting plate (63), the upper surface of the mounting plate (63) is fixedly connected with the ejector pin (62).

2. An ejection mechanism for an injection mold as defined in claim 1, characterized in that: The ejection assembly (6) further comprises spring one (65) and spring two (66), the upper surface of the slider (64) and the inner wall of the sliding groove are fixedly connected with spring one (65), the upper surface of the movable plate (61) and the lower surface of the fixed mold (3) are fixedly connected with uniformly distributed spring two (66), and the spring two (66) are sleeved on the outer surfaces of the vertically adjacent ejector pin (67).

3. An ejection mechanism for an injection mold as defined in claim 1, wherein: The upper surface of the fixed mold (3) is fixedly connected with uniformly distributed positioning column (9), the lower surface of the movable die (2) is provided with uniformly distributed positioning groove (10), and the positioning column (9) is inserted into the vertically adjacent positioning groove (10).

4. The ejection mechanism for injection molds according to claim 1, characterized in that: The upper surface of the movable die (2) is provided with an injection port (5) in the middle, the lower surface of the movable die (2) and the upper surface of the fixed mold (3) are provided with symmetrically distributed molding cavities (8), the semicircular shunt pipeline (7) is arranged between the two horizontally adjacent molding cavities (8), and the lower end of the injection port (5) is communicated with the upper shunt pipeline (7).

5. An ejection mechanism for an injection mold as defined in claim 1, wherein: The inside of the movable die (2) and the fixed mold (3) is fixedly connected with the liquid conveying pipeline (11), the front surface of the movable die (2) and the fixed mold (3) is provided with symmetrically distributed liquid inlet (4), the liquid inlet (4) is communicated with the front end of the longitudinally adjacent liquid conveying pipeline (11), and the rear surface of the movable die (2) and the fixed mold (3) is provided with symmetrically distributed liquid outlet, the liquid outlet is communicated with the rear end of the longitudinally adjacent liquid conveying pipeline (11).

6. An ejection mechanism for an injection mold as defined in claim 1, wherein: The lower surface of the base (1) is slidably connected with the front and rear symmetrically distributed ejector rod (13), and the upper end of the ejector rod (13) is fixedly connected to the lower surface of the movable plate (61).

7. An ejection mechanism for an injection mold as defined in claim 1, wherein: The upper surface of the base (1) and the lower surface of the movable plate (61) are fixedly connected with the support column (12).

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