Injection mold with angle pin structure

Abstract

The utility model belongs to the field of mold design, and provides an injection mold with an angle pin structure, which comprises a female mold core, a male mold core, a sliding block, a first angle pin and a second angle pin, the sliding block is arranged between the male mold core and the female mold core, and the first angle pin and the second angle pin slide in the male mold core; the first angle pin, the male mold core and the second angle pin are used for forming the interior of an injection product, and the female mold core and the sliding block are used for forming the exterior of the injection product; a first slide way and a second slide way are formed in the male mold core and are obliquely arranged; the first angle pin is movably connected into the first slide way, and the second angle pin is movably connected into the second slide way; the first angle pin and the second angle pin respectively move towards the injection product along the first slide way and the second slide way, and the end parts of the first angle pin and the second angle pin gradually approach to be separated from the injection product. The first angle pin and the second angle pin are arranged and used for forming the internal structure of the inverted buckle product, demolding can be facilitated, and the product injection molding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of mold design, in particular to an injection mold with an oblique pin structure. Background Art

[0002] Injection molding is a widely used processing technology in the manufacturing process of plastic products. Especially when producing plastic products with complex geometric structures, the injection molding process has been widely recognized for its efficiency and precision. However, for certain specific structures, such as L-shaped undercut structures, the injection molding process faces significant technical challenges.

[0003] L-shaped undercut products have an inner undercut structure, which will be tightly integrated with the mold after injection molding, resulting in difficulties in the demoulding process. Traditional demoulding technology mainly relies on the mechanical movement and ejection system of the mold, but for the inner undercut structure, conventional ejection methods often cannot effectively solve the demoulding problem. Specifically, the L-shaped undercut structure will interfere with the molding structure during demoulding, making it difficult for the product to be smoothly removed from the mold.

[0004] Even if a specific demoulding structure is designed to deal with the inner undercut structure, there are still many problems in actual operation. First, due to the shape characteristics of the inner undercut structure, the product is prone to "follow-up" during the demoulding process, that is, the product adheres to the molded part during the ejection or separation process of the mold, and the injection molded product will be offset or deformed by force. This will not only cause defects on the product surface, but in more serious cases, it will cause product damage, affecting the quality and pass rate of the final product. Utility Model Content

[0005] The utility model discloses an injection mold with an oblique pin structure, which is used to solve relevant technical problems in the background technology.

[0006] The technical solution provided by the utility model is as follows: an injection mold with an oblique pin structure, comprising: a female mold core, a male mold core, a slider, a first oblique pin, and a second oblique pin; the slider is between the male mold core and the female mold core, and the first oblique pin and the second oblique pin slide in the male mold core; the first oblique pin, the male mold core, and the second oblique pin are used to mold the interior of the injection molded product, and the female mold core and the slider are used to mold the exterior of the injection molded product;

[0007] A first slide and a second slide are provided in the male mold core, and the first slide and the second slide are inclined; the first oblique pin is movably connected in the first slide, and the second oblique pin is movably connected in the second slide; the first oblique pin and the second oblique pin move along the first slide and the second slide toward the injection molded product respectively, and the ends of the first oblique pin and the second oblique pin gradually approach each other and separate from the injection molded product.

[0008] In one embodiment, it also includes: a male mold plate, a male mold core is connected to the male mold plate; a cavity is opened in the male mold plate, a push plate is arranged in the cavity, a push rod is connected to the push plate, one end of the first oblique pin and the second oblique pin are connected to the push rod, and the push plate is connected to the telescopic cylinder at the bottom.

[0009] In one embodiment, a T-shaped slide groove is opened inwardly at the top of the push rod, and the first oblique pin and the second oblique pin are both connected to the T-shaped slide groove.

[0010] In one embodiment, a slot is provided in the first oblique pin, and an L-shaped fixing block is connected in the slot;

[0011] The card slot is L-shaped, with a horizontal slot and a vertical slot; the fixed block has a horizontal top material part and a vertical limiting part, a movable slot is provided at the angle between the top material part and the limiting part, and a waist-shaped hole is provided on the limiting part; the top material part is inserted into the horizontal slot, and the end surface of the top material part is matched with the surface of the first oblique pin; the limiting part is in the vertical slot, and a pin shaft is connected in the vertical slot, and the pin shaft is movably connected in the waist-shaped hole;

[0012] A vertical wall is respectively opened inwardly on both side walls of the first slideway, and the vertical wall is in contact with the two side walls of the limiting part, so as to limit the movement of the fixed block when the first oblique pin is separated from the injection molded product.

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

[0014] The utility model provides an injection mold with an oblique pin structure, which is used for molding the internal structure of an undercut product by arranging a first oblique pin and a second oblique pin, and can facilitate demoulding, thereby improving the efficiency of product injection molding.

[0015] The utility model provides an injection mold with an oblique pin structure. When the mold is opened, the first oblique pin moves obliquely upward, the fixed block is restricted by the vertical wall, and the end of the material-lifting portion is on the surface of the first oblique pin to support the injection molded product, thereby preventing the injection molded product from sticking to the first oblique pin and running away; when the first oblique pin continues to move obliquely upward and the fixed block also moves upward and separates from the vertical wall, the first oblique pin drives the fixed block to move inward, and the first oblique pin and the fixed block are completely separated from the injection molded product, so that the injection molded product is demolded; by arranging the fixed block, the effect of non-destructive demolding of the injection molded product is achieved, the demolding efficiency is further improved, and the problems of running away and product demolding damage caused by the adhesion of the injection molded product to the first oblique pin are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an external stereogram of the injection mold of the utility model;

[0017] Figure 2 It is a three-dimensional cross-sectional view of the injection mold of the utility model;

[0018] Figure 3It is a structural schematic diagram of the male mold core, the first oblique pin and the second oblique pin in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the male mold core in the utility model;

[0020] Figure 5 It is a partial cross-sectional view of the male mold core, the first oblique pin, and the fixing block of the utility model;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the first oblique pin and the fixing block in the utility model;

[0022] Figure 7 It is a partial cross-sectional view of the first oblique pin and the fixing block in the utility model;

[0023] Figure 8 It is a partial cross-sectional view of the clamping groove in the first oblique pin of the utility model;

[0024] Fig. 9 It is a structural schematic diagram of the first oblique pin and the push rod in the utility model.

[0025] The accompanying drawings are marked as follows: 1. female mold core; 2. male mold core; 3. male mold plate; 4. slider; 5. first oblique pin; 6. second oblique pin; 7. first slide; 8. second slide; 9. cavity; 10. push plate; 11. push rod; 12. telescopic cylinder; 13. T-shaped slide; 14. slot; 141. horizontal slot; 142. vertical slot; 15. fixed block; 151. lifting part; 152. limiting part; 153. movable slot; 154. waist-shaped hole; 16. vertical wall; 17. injection molded product; 18. pin shaft. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention. Example

[0027] like Figure 1-9As shown, the utility model is an injection mold with an oblique pin structure, comprising: a female mold core 1, a female mold plate, a male mold core 2, a male mold plate 3, a slider 4, a first oblique pin 5, and a second oblique pin 6; the injection mold of this embodiment is an inverted mold, the female mold core 1, the female mold plate, the male mold core 2 and the male mold plate 3 are arranged in sequence from top to bottom, the slider 4 slides on the male mold plate 3 and is between the female mold core 1 and the male mold core 2; a first slideway 7 and a second slideway 8 are provided in the male mold core 2, the first slideway 7 and the second slideway 8 are symmetrical, and are both arranged obliquely from bottom to top and inward, the first oblique pin 5 is on the first slideway 7 The first slanted pin 5 and the second slanted pin 6 slide inwardly, and the second slanted pin 6 slides in the second slide 8; when the mold is closed, the surface of the first slanted pin 5, the surface of the second slanted pin 6 and the surface of the male mold core 2 form the internal structure of the injection molded product 17, and the female mold core 1 and the slider 4 are used to form the external structure of the injection molded product 17; when the mold is opened, the first slanted pin 5 and the second slanted pin 6 move from bottom to top along the first slide 7 and the second slide 8 respectively, and the first slanted pin 5 and the second slanted pin 6 lift the injection molded product 17 and move inwardly at the inner end of the injection molded product 17, thereby realizing the molding and demoulding of the undercut product, and improving the production efficiency of such products.

[0028] Specifically, the male mold plate 3 is provided with a cavity 9 at one end away from the male mold core 2, and a push plate 10 is provided in the cavity 9. A push rod 11 is connected to the push plate 10, one end of the first oblique pin 5 and the second oblique pin 6 are connected to the push rod 11, and the bottom of the push plate 10 is connected to the telescopic cylinder 12; when opening or closing the mold, the telescopic end of the telescopic cylinder 12 pushes up or pulls down the push plate 10, and drives the first oblique pin 5 and the second oblique pin 6 to move through the push rod 11. A T-shaped slide groove 13 is provided inwardly at the top of the push rod 11, and the first oblique pin 5 and the second oblique pin 6 are both connected to the T-shaped slide groove 13; by providing the T-shaped slide groove 13, the position of the first oblique pin 5 and the second oblique pin 6 can be fine-tuned when the equipment is debugged. When in use, the first oblique pin 5 and the second oblique pin 6 slide with the T-shaped slide groove 13, which is used for connecting the push rod 11 with the first oblique pin 5 and the second oblique pin 6.

[0029] The working principle of this embodiment 1 is as follows: when the mold is closed, the surface of the first oblique pin 5, the surface of the second oblique pin 6 and the surface of the male mold core 2 form the internal structure of the injection molded product 17, and the female mold core 1 and the slider 4 are used to form the external structure of the injection molded product 17; when the mold is opened, the male mold plate 3 moves upward with the male mold core 2 to separate, and the telescopic end of the telescopic cylinder 12 pushes the push plate 10 upward, and drives the first oblique pin 5 and the second oblique pin 6 to move through the push rod 11; the first oblique pin 5 and the second oblique pin 6 move from bottom to top along the first slide 7 and the second slide 8 respectively, the first oblique pin 5 and the second oblique pin 6 push up the injection molded product 17, and the ends inside the injection molded product 17 gradually move inward and separate from the injection molded product 17, thereby realizing the molding and demolding of the undercut product, and improving the production efficiency of such products. Example

[0030] This embodiment 2 is completed on the basis of embodiment 1, and a fixing block 15 is added to the first oblique pin 5 to support the injection molded product 17 at the moment of demolding, thereby preventing the injection molded product 17 from sticking to the first oblique pin 5. During the demolding process, the fixing block 15 moves away from the injection molded product 17 along with the first oblique pin 5, thereby achieving the effect of non-damage demolding of the injection molded product 17, further improving the demolding efficiency, and solving the problems of following and product demolding damage caused by the adhesion of the injection molded product 17 to the first oblique pin 5.

[0031] In this embodiment, a slot 14 is provided in the first oblique pin 5, and an L-shaped fixing block 15 is connected in the slot 14; as shown in the figure, the slot 14 is L-shaped, and has a transverse slot 141 and a vertical slot 142; the fixing block 15 has a transverse top material portion 151 and a vertical limit portion 152, and a movable slot 153 is provided at the angle between the top material portion 151 and the limit portion 152; the top material portion 151 is inserted into the transverse slot 141, and the end surface of the top material portion 151 is matched with the surface of the first oblique pin 5; The limiting portion 152 is provided with a waist-shaped hole 154, in which a pin 18 is movably connected, and the pin 18 is fixedly connected to the vertical groove 142; the two side walls of the first slideway 7 are respectively provided with a vertical wall 16 inwardly, and the vertical wall 16 is in contact with the two side walls of the limiting portion 152, and when the first oblique pin 5 is separated from the injection molded product 17, the movement of the fixed block 15 is limited; when the mold is closed, the limiting portion 152 is between the vertical walls 16, and the top material portion 151 is in the horizontal groove 141 When the first oblique pin 5 moves upward and rightward, the end face of the fixed block 15 abuts against the injection molded product 17, so that the injection molded product 17 is separated from the end face of the first oblique pin 5 to avoid the injection molded product 17 from sticking and running; when the first oblique pin 5 continues to move upward and rightward, and the fixed block 15 also moves upward and away from the vertical wall 16, the first oblique pin 5 drives the fixed block 15 to move rightward through the pin shaft 18, and the first oblique pin 5 and the fixed block 15 are completely separated from the injection molded product 17, so that the injection molded product 17 is demoulded; by setting the fixed block 15, the effect of non-destructive demoulding of the injection molded product 17 is achieved, the demoulding efficiency is further improved, and the problems of running and product demoulding damage caused by the adhesion of the injection molded product 17 to the first oblique pin 5 are solved.

[0032] In this embodiment, when the first oblique pin 5 moves obliquely upward and the fixed block 15 can only move up and down due to the restriction of the vertical wall 16, the first oblique pin 5 moves upward and rightward until the pin shaft 18 abuts against the waist-shaped hole 154, and the fixed block 15 is separated from the vertical wall 16, thereby driving the fixed block 15 to move rightward together through the pin shaft 18.

[0033] In this embodiment, a movable groove 153 is opened at the angle between the top material part 151 and the limiting part 152. When the first oblique pin 5 moves upward and rightward, and the fixed block 15 can only move upward, the movable groove 153 can avoid the interference between the first oblique pin 5 and the fixed block 15, and provide space for the first oblique pin 5 to move to the right.

[0034] Working principle of Example 2: The surface of the first oblique pin 5, the surface of the second oblique pin 6 and the surface of the male mold core 2 form the internal structure of the injection molded product 17, and the female mold core 1 and the slider 4 are used to form the external structure of the injection molded product 17; the limiting portion 152 is between the vertical walls 16, the top material portion 151 is in the transverse groove 141, and its end face is matched with the surface of the first oblique pin 5, which is used for molding the injection molded product 17; when the mold is opened, the first oblique pin 5 moves obliquely upward, the first oblique pin 5 moves upward and rightward, and the fixed block 15 is limited by the vertical wall 16 and moves upward with the first oblique pin 5; when the first oblique pin 5 moves upward and rightward, the end face of the fixed block 15 The first oblique pin 5 is pressed against the injection molded product 17, so that the injection molded product 17 is separated from the end face of the first oblique pin 5, thereby preventing the injection molded product 17 from sticking and running; when the first oblique pin 5 continues to move obliquely upward and rightward, and the fixed block 15 also moves upward and separates from the vertical wall 16, the first oblique pin 5 drives the fixed block 15 to move rightward through the pin shaft 18, and the first oblique pin 5 and the fixed block 15 are completely separated from the injection molded product 17, so that the injection molded product 17 is demoulded; by setting the fixed block 15, the effect of non-damage demoulding of the injection molded product 17 is achieved, the demoulding efficiency is further improved, and the problems of running and product demoulding damage caused by the adhesion of the injection molded product 17 to the first oblique pin 5 are solved.

[0035] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0036] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An injection mold with an oblique pin structure, characterized in that: include: A female mold core (1), a male mold core (2), a slider (4), a first oblique pin (5), and a second oblique pin (6); The slide block (4) is between the male mold core (2) and the female mold core (1), and the first oblique pin (5) and the second oblique pin (6) slide in the male mold core (2); the first oblique pin (5), the male mold core (2) and the second oblique pin (6) are used to mold the interior of the injection molded product (17), and the female mold core (1) and the slide block (4) are used to mold the exterior of the injection molded product (17); A first slideway (7) and a second slideway (8) are provided in the male mold core (2), and the first slideway (7) and the second slideway (8) are inclined; the first oblique pin (5) is movably connected to the first slideway (7), and the second oblique pin (6) is movably connected to the second slideway (8); the first oblique pin (5) and the second oblique pin (6) move along the first slideway (7) and the second slideway (8) toward the injection molded product (17), respectively, and the ends of the first oblique pin (5) and the second oblique pin (6) gradually move closer to each other and separate from the injection molded product (17).

2. The injection mold with an oblique pin structure according to claim 1, characterized in that: Also includes: A male mold plate (3), the male mold core (2) is connected to the male mold plate (3); a cavity (9) is opened in the male mold plate (3), a push plate (10) is arranged in the cavity (9), a push rod (11) is connected to the push plate (10), one end of the first oblique pin (5) and the second oblique pin (6) are connected to the push rod (11), and the push plate (10) is connected to the telescopic cylinder (12) at the bottom.

3. An injection mold with an oblique pin structure as claimed in claim 2, characterized in that: A T-shaped slide groove (13) is provided inwardly at the top of the push rod (11), and the first oblique pin (5) and the second oblique pin (6) are both connected to the T-shaped slide groove (13).

4. The injection mold with an oblique pin structure according to claim 1, characterized in that: A slot (14) is provided in the first oblique pin (5), and an L-shaped fixing block (15) is connected to the slot (14); The card slot (14) is L-shaped, and has a transverse slot (141) and a vertical slot (142); the fixed block (15) has a transverse top material portion (151) and a vertical limiting portion (152); a movable slot (153) is provided at the angle between the top material portion (151) and the limiting portion (152); a waist-shaped hole (154) is provided on the limiting portion (152); the top material portion (151) is inserted into the transverse slot (141), and the end surface of the top material portion (151) is matched with the surface of the first oblique pin (5); the limiting portion (152) is in the vertical slot (142), and a pin shaft (18) is connected in the vertical slot (142), and the pin shaft (18) is movably connected in the waist-shaped hole (154); The two side walls of the first slideway (7) are respectively provided with a vertical wall (16) facing inwards, and the vertical wall (16) is in contact with the two side walls of the limiting portion (152), so as to limit the movement of the fixing block (15) when the first oblique pin (5) is separated from the injection molded product (17).

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