Sliding block ejector pin structure of injection mold

Abstract

The utility model discloses a slider ejector pin structure of an injection mold, which comprises a male mold core, a female mold core, a slider and an ejector pin, the slider is slidably arranged between the male mold core and the female mold core and positioned on one side of the male mold core, a product is formed between the male mold core and the female mold core and between the male mold core and the slider, and a water gap is formed on the slider. A positioning block is arranged at the bottom of the sliding block, the ejector pin penetrates through the positioning block and the sliding block and is used for ejecting the water gap, the bottom of the ejector pin is arranged on the ejector pin driving mechanism in a sliding mode in the sliding direction of the sliding block and synchronously slides along with the sliding block, the ejector pin and the sliding block are always kept relatively static when the sliding block moves after mold opening, and the risk that the ejector pin is ejected out and collides with the sliding block is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a slider ejector structure of an injection mold. Background Art

[0002] In injection molding technology, mold design and manufacturing is one of the key links that determine product quality and production efficiency. Injection molds are usually composed of male molds, female molds, sliders, ejectors and other components. Among them, sliders and ejectors are important components for realizing complex product structures and demoulding functions.

[0003] Sliders are used in injection molds to mold complex product geometries, especially when the product design has features such as undercuts and side holes. Sliders can achieve lateral core pulling, thereby smoothly demolding. Ejectors are mainly used to eject the product from the mold after mold opening. In some injection molds, slides and ejectors need to work together to ensure that there is no interference or damage during the demolding process. However, the traditional slide and ejector structure has some design flaws.

[0004] The traditional injection mold slider and ejector structure usually fixes the ejector at a certain position of the mold, and the ejector is pushed by the ejector plate or other driving mechanism to eject the sprue of the molded product. However, when the slider moves after the mold is opened, the fixed position of the ejector may cause it to collide with the slider, causing damage to the mold or bending of the ejector. This risk is particularly evident when the slider is large or moves a long distance. In addition, when the ejector ejects the product sprue, the relative movement between the ejector and the slider may also generate friction, causing wear of the ejector or damage to the slider surface, affecting the mold life and product quality. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an injection mold slider ejector structure.

[0006] The technical solution provided by the utility model is as follows:

[0007] An injection mold slider ejector structure comprises a male mold core, a female mold core, a first slider and an ejector, wherein the slider is slidably arranged between the male mold core and the female mold core and is located on one side of the male mold core, a product is formed between the male mold core and the female mold core and between the male mold core and the first slider, a sprue is formed on the first slider, a positioning block is provided at the bottom of the first slider, and the ejector passes through the positioning block and the first slider to lift the sprue;

[0008] The bottom of the ejector pin is slidably arranged on the ejector pin driving mechanism along the sliding direction of the first slider, and slides synchronously with the first slider.

[0009] In some embodiments, the male mold core is an L-shaped structure, the female mold core is a plate-shaped structure, and the first sliding block is disposed at a gap between the male mold core and the female mold core.

[0010] In some embodiments, a movable cavity is opened in the male mold core, the width of the movable cavity is the moving stroke of the first slider, and the positioning block drives the ejector pin to be limited in the movable cavity.

[0011] In some embodiments, the first slider has a first through hole for the ejector to pass through, the positioning block has a second through hole for the ejector to pass through, the positioning block is fixed to the bottom of the first slider by screws, and the first through hole and the second through hole are coaxially arranged.

[0012] In some embodiments, the ejector drive mechanism includes an ejector plate, an ejector base block is provided on the ejector plate, a slide groove is provided on the top of the ejector base block, and a second sliding block matching the slide groove is provided on the bottom of the ejector.

[0013] In some embodiments, the slide groove is a T-shaped groove, and the second slider is a T-shaped slider.

[0014] In summary, the beneficial effects of the utility model are as follows:

[0015] (1) The bottom of the ejector pin of the utility model is slidably arranged on the ejector pin driving mechanism along the sliding direction of the slider, and slides synchronously with the slider. When the slider moves after the mold is opened, the ejector pin and the slider always remain relatively still, thereby avoiding the risk of the ejector pin being ejected and colliding with the slider.

[0016] (2) The ejector drive mechanism of the utility model comprises an ejector plate, an ejector base block is provided on the ejector plate, a slide groove is provided on the top of the ejector base block, and a slider cooperating with the slide groove is provided on the bottom of the ejector, so that the ejector has an ejection function and can slide along with the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 It is a cross-sectional structural schematic diagram of another viewing angle of the utility model;

[0020] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 5 It is an exploded view of the male mold core and the female mold core of the utility model.

[0022] The reference numerals are as follows:

[0023] 1. Male mold core; 2. Female mold core; 3. First slider; 4. Ejector; 5. Positioning block; 6. Moving cavity; 7. Screw; 8. Ejector plate; 9. Ejector base block; 10. Slide; 11. Second slider; 12. Product. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0025] like Figure 1-5 As shown, this embodiment provides an injection mold slider ejector structure, which mainly includes a male mold core 1 and a female mold core 2, wherein the upper part of the female mold core 2 is connected to the A plate, and the lower part of the male mold core 1 is connected to the B plate, wherein the male mold core 1 is an L-shaped structure, and the female mold core 2 is a plate-shaped structure. The first slider 3 is slidably arranged at the gap between the male mold core 1 and the female mold core 2, and a hole-shaped structure is formed on the side of the product 12. The main body of the product 12 is formed between the male mold core 1 and the female mold core 2, and the side of the product 12 is formed between the male mold core 1 and the first slider 3. Due to restrictions on other areas, it is not possible to make Water inlet point. The runner water inlet can only be made in the first slider 3. Therefore, after demoulding, the ejector pin 4 needs to pass through the first slider 3 to lift the water inlet of the material head. A positioning block 5 is provided at the bottom of the first slider 3. The ejector pin 4 passes through the positioning block 5 and the first slider 3 to lift the water inlet. The bottom of the ejector pin 4 is slidably arranged on the ejector drive mechanism along the sliding direction of the first slider 3, and slides synchronously with the first slider 3. When the first slider 3 moves after the mold is opened, the ejector pin 4 and the first slider 3 always remain relatively still, avoiding the risk of the ejector pin 4 being ejected and colliding with the first slider 3.

[0026] In this embodiment, the first slider 3 is provided with a first through hole for the ejector 4 to pass through, the positioning block 5 is provided with a second through hole for the ejector to pass through, the positioning block 5 is fixed to the bottom of the first slider 3 by a screw 7, and the first through hole and the second through hole are coaxially arranged. The apertures of the first through hole and the second through hole are slightly larger than the diameter of the ejector 4, so as to ensure that the ejector 4 can smoothly pass through the positioning block 5 and the first slider 3 to lift the water outlet.

[0027] In a preferred embodiment, a movable cavity 6 is opened in the male mold core 1 , the width of the movable cavity 6 is equal to the moving stroke of the first slider 3 , and the positioning block 5 drives the ejector pin 4 to be limited in the movable cavity 6 .

[0028] In actual use, the first slider 3 only needs to move a fixed distance to achieve demoulding of the product 12. Therefore, the positioning block 5 is limited and the limit stroke is the moving stroke of the first slider 3 to ensure the sliding accuracy of the positioning block 5.

[0029] As another further optimized implementation, the ejector drive mechanism includes an ejector plate 8, an ejector base block 9 is provided on the ejector plate 8, a through hole is provided on the B plate for the ejector base block 9 to be inserted, the ejector base block 9 is horizontally limited in the B plate, the ejector 4 passes through the B plate and then passes through the positioning block 5, a slide groove 10 is provided on the top of the ejector base block 9, and a second slider 11 cooperating with the slide groove 10 is provided at the bottom of the ejector 4. In order to further realize that the ejector 4 has the function of lifting and can also slide with the first slider 3, the present embodiment sets the ejector 4 and the ejector base block 9 to be slidingly connected, the ejector plate 8 drives the ejector base block 9 to rise and fall, thereby driving the ejector 4 to rise and fall, and at the same time will not interfere with the lateral movement of the first slider 3. The drive of the ejector plate 8 is a prior art and will not be repeated in this application.

[0030] The slide groove 10 is a T-shaped groove, and the second slide block 11 is a T-shaped slide block. The cooperation between the T-shaped groove and the T-shaped slide block makes the sliding connection between the ejector pin 4 and the ejector pin base block 9 more stable.

[0031] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or methods mentioned in the embodiments.

[0032] It should also be noted that this document may provide demonstrations of parameters containing specific values, but these parameters do not need to be exactly equal to the corresponding values, but can be approximated to the corresponding values ​​within an acceptable error tolerance or design constraint. Directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., are only referenced to the directions of the drawings and are not intended to limit the scope of protection of this application.

[0033] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An injection mold slider ejector structure, characterized in that: The mold comprises a male mold core (1), a female mold core (2), a first slider (3) and an ejector pin (4); the first slider (3) is slidably arranged between the male mold core (1) and the female mold core (2) and is located on one side of the male mold core (1); a product (12) is formed between the male mold core (1) and the female mold core (2) and between the male mold core (1) and the first slider (3); a sprue is formed on the first slider (3); a positioning block (5) is provided at the bottom of the first slider (3); and the ejector pin (4) passes through the positioning block (5) and the first slider (3) and is used to lift the sprue; The bottom of the ejector pin (4) is slidably arranged on the ejector pin driving mechanism along the sliding direction of the first sliding block (3), and slides synchronously with the first sliding block (3).

2. The injection mold slider ejector pin structure according to claim 1, characterized in that: The male mold core (1) is an L-shaped structure, the female mold core (2) is a plate-shaped structure, and the first sliding block (3) is arranged at a gap between the male mold core (1) and the female mold core (2).

3. The injection mold slider ejector pin structure according to claim 1, characterized in that: The first slider (3) is provided with a first through hole for the ejector pin (4) to pass through, and the positioning block (5) is provided with a second through hole for the ejector pin to pass through. The positioning block (5) is fixed to the bottom of the first slider (3) by means of screws (7), and the first through hole and the second through hole are coaxially arranged.

4. The injection mold slider ejector pin structure according to claim 3, characterized in that: A movable cavity (6) is provided in the male mold core (1), the width of the movable cavity (6) being equal to the moving stroke of the first slider (3), and the positioning block (5) drives the ejector pin (4) to be limited in the movable cavity (6).

5. The injection mold slider ejector pin structure according to claim 4, characterized in that: The ejector drive mechanism comprises an ejector plate (8), an ejector base block (9) is provided on the ejector plate (8), a slide groove (10) is provided on the top of the ejector base block (9), and a second sliding block (11) cooperating with the slide groove (10) is provided on the bottom of the ejector (4).

6. The injection mold slider ejector pin structure according to claim 5, characterized in that: The slide groove (10) is a T-shaped groove, and the second slide block (11) is a T-shaped slide block.

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