Injection molded product side recess formation slide demolding structure

Abstract

This utility model discloses a sliding demolding structure for side-grooved molded parts in injection molding, relating to the field of injection molding technology. It includes an upper mold and a lower mold, with an upper mold core and a lower mold core respectively corresponding to the upper and lower molds. A main slide block is also provided between the upper and lower molds, slidably connected to the lower mold. An inclined guide post is fixedly connected to the lower side of the upper mold. An inclined guide hole is provided on the main slide block corresponding to the guide post, and the guide post is slidably connected to the main slide block through the guide hole. A grooved molded part is connected to the side of the main slide block facing the product. This molded part consists of molded part A, molded part B, and a secondary slide block. Molded part A and molded part B can be assembled into a product groove contour structure. Molded part B is linked to the main slide block, and the secondary slide block is linked to molded part A and is also linked to the main slide block through a delay structure. This structure enables step-by-step demolding of the side groove, ensuring processing quality, reducing product stringing and deformation, and improving the yield rate.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to a sliding demolding structure for injection molded products with side grooves. Background Technology

[0002] In the field of injection molding, the structural design of injection molded products is becoming increasingly complex. To meet assembly, aesthetic, and functional requirements, many injection molded products feature grooves on their sides. These grooves typically have a certain depth and curvature and are an indispensable part of the product. The core challenge in molding side grooves lies in the demolding process. Because the grooves are located on the side of the product, perpendicular or at an angle to the mold opening direction, demolding cannot be achieved directly through the conventional mold opening action. If the demolding method is improper, it can easily lead to problems such as product tearing, deformation, material shortage, and even mold jamming and damage, severely impacting product yield and production efficiency.

[0003] Currently, there are various solutions in the industry for demolding side grooves in injection molded products. Among them, the more widely used ones include inclined guide post demolding structures, ejector rod side ejection structures, and manual demolding structures. The inclined guide post demolding structure converts the linear motion of mold opening into the lateral sliding of the slider through the cooperation of the inclined guide post and the slider, thereby driving the side groove molded part to separate from the product and achieve demolding. However, this structure may cause stringing deformation at the groove of the product when the slider moves to demold. Utility Model Content

[0004] To address one of the shortcomings of existing technologies, this utility model provides a sliding demolding structure for injection molded products with side grooves, solving the problems of molding and demolding side grooves in products.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sliding demolding structure for a side-grooved molded part of an injection molded product, including an upper mold and a lower mold, with an upper mold core and a lower mold core respectively provided for the upper and lower molds. A main slide block is also provided between the upper and lower molds, and the main slide block is slidably connected to the lower mold. An inclined guide post is fixedly connected to the lower side of the upper mold, and an inclined guide hole is provided on the block of the main slide block corresponding to the guide post. The guide post is slidably connected to the main slide block through the guide hole. A grooved molded part is connected to the side of the main slide block facing the product, and the grooved molded part includes:

[0006] Molded part A has a half-shaped contour structure with a corresponding product groove structure;

[0007] Molded part B has a contoured structure with the other half corresponding to the groove structure of the product. Molded parts A and B can be assembled into a contoured structure corresponding to the groove structure of the product. The assembly direction of molded parts A and B is parallel to the direction of mold opening and closing. Molded part B is connected to the main slider and can move synchronously with the main slider.

[0008] The secondary slider is linked with the molding part A, and the secondary slider and the main slider are linked through a delay structure.

[0009] Preferably, the lower mold is provided with a sliding connection structure corresponding to the main slider, and the sliding connection structure includes:

[0010] The slide groove is a groove that faces the upper mold, and the lower part of the main slider is slidably connected to the lower mold through the slide groove;

[0011] Pressure plates are provided on both sides of the top of the slide groove, extending toward the interior of the main slider, with the edge of the main slider located below the pressure plates.

[0012] Preferably, the sliding connection structure of the lower mold further includes:

[0013] At least one lower mold positioning component is provided at the bottom of the slide groove. The lower mold positioning component is a rectangular block, and its length direction is parallel to the sliding direction of the main slider.

[0014] The bottom of the main slider has a positioning groove corresponding to the lower mold positioning component, and the lower mold positioning component is slidably connected to the positioning groove.

[0015] Preferably, the end of the guide post connected to the upper mold is inclined toward the direction closer to the product, and the lower end is inclined toward the direction away from the product.

[0016] The guide post is a cylindrical rod;

[0017] The main slider includes:

[0018] The main connecting part is located on the side of the main slider close to the product. The side of the main connecting part facing the groove forming part has a notch corresponding to forming part A and forming part B. The lower part of the main connecting part is provided with a connecting structure corresponding to forming part B, and is fixedly connected to forming part B through the connecting structure.

[0019] The main sliding part is disposed on the lower side of the main connecting part and extends in a direction away from the product; the positioning groove is formed on the lower side of the main sliding part; the pressure plate extends to the upper side of both sides of the main sliding part.

[0020] A main guide hole is formed on the main sliding part. The main guide hole is an inclined through hole, and the guide post is slidably connected to the main slider through the main guide hole.

[0021] Preferably, the main slider further includes:

[0022] A secondary slide groove is formed at the bottom of the main sliding part and extends toward the product.

[0023] The secondary slider includes:

[0024] A secondary linkage is provided on one side of the main connecting part, with a gap between the secondary linkage and the main connecting part; the secondary linkage is linked with the molded part A;

[0025] A secondary sliding part is disposed below the secondary linkage part, and the secondary sliding part and the secondary sliding groove are slidably connected.

[0026] Preferably, the upper mold further includes:

[0027] An upper mold baffle is provided corresponding to the secondary linkage part. The upper mold baffle is connected to the upper mold. In the mold-closed state, the upper mold baffle is located on the side of the secondary linkage part away from the product.

[0028] Preferably, it also includes:

[0029] One end of the pull rod is fixedly connected to the molded part A, and the other end is linked to the secondary slider through the secondary linkage part;

[0030] The main connecting part has a pull rod through groove corresponding to the pull rod.

[0031] Preferably, the groove is an inclined groove, with the side of the groove facing the product being the high horizontal side and the side away from the product being the low horizontal side;

[0032] The secondary linkage unit includes:

[0033] Linkage groove, an inclined groove opened inside the secondary linkage part;

[0034] The first linkage block is slidably connected to the linkage groove;

[0035] The second linkage block is rotatably connected to the first linkage block and fixedly connected to the pull rod.

[0036] Preferably, the bottom of the molded part B is provided with a downwardly protruding boss corresponding to the secondary slide groove;

[0037] The secondary sliding part has a notch corresponding to the boss of the molded part B.

[0038] Preferably, there are several molded parts A, and each molded part A is provided with a secondary slider and a pull rod.

[0039] Compared with existing technologies, this structure has the following advantages: It can realize the step-by-step demolding of the side groove of the injection molded product. By separating the molded part A and the molded part B in steps, sufficient cooling and stabilization time is provided for the groove position of the product, which can effectively ensure the processing quality of the groove structure of the product, reduce problems such as stringing and deformation of the product during demolding, and significantly improve the product qualification rate.

[0040] Meanwhile, through the cooperation of structures such as slides, pressure plates, and positioning parts, the main slider is accurately guided and slides stably, avoiding deviations and jamming during the sliding process. With the reasonable arrangement of the auxiliary slider, tie rods, and linkage structure, the overall structure is subjected to uniform force and moves smoothly, which can stably achieve smooth demolding of the lateral groove and ensure continuous and orderly production.

[0041] In addition, the structure is reasonably designed to adapt to the processing requirements of lateral grooves of different sizes and tilt angles, and the components move smoothly together, making disassembly and maintenance convenient, which further improves production efficiency and reduces production and maintenance costs. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 ;

[0043] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 ;

[0044] Figure 3 The hidden upper mold state axis side of this application embodiment Figure 1 ;

[0045] Figure 4 The hidden upper mold state axis side of this application embodiment Figure 2 ;

[0046] Figure 5 This is a top view of the hidden upper mold state according to an embodiment of this application.

[0047] Figure 6 for Figure 5 AA cross-section view;

[0048] Figure 7 for Figure 5 BB cross-section.

[0049] In the picture:

[0050] 1. Upper mold; 11. Upper mold core; 12. Upper mold baffle;

[0051] 2. Lower mold; 21. Slide groove; 22. Pressure plate; 23. Lower mold positioning component;

[0052] 3. Main slider; 31. Main connecting part; 32. Main sliding part; 33. Secondary slide groove

[0053] 4. Guide post;

[0054] 5. Groove forming part; 51. Forming part A; 52. Forming part B;

[0055] 6. Secondary slider; 61. Secondary linkage part; 611. Linkage groove; 612. First linkage block; 613. Secondary linkage block; 62. Secondary sliding part;

[0056] 7. Pull rod. Detailed Implementation

[0057] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0058] Please see Figures 1-7 This application provides the following technical solutions:

[0059] A sliding demolding structure for a side-grooved molded part of an injection molded product includes an upper mold 1 and a lower mold 2. An upper mold core 11 and a lower mold core are respectively provided for the upper mold 1 and the lower mold 2. A main slide block 3 is also provided between the upper mold 1 and the lower mold 2, and the main slide block 3 is slidably connected to the lower mold 2. An inclined guide post 4 is fixedly connected to the lower side of the upper mold 1. An inclined guide hole is provided on the block of the main slide block 3 corresponding to the guide post 4. The guide post 4 is slidably connected to the main slide block 3 through the guide hole. A grooved molded part 5 is connected to the side of the main slide block 3 facing the product 100. The specific positioning, driving, and guiding structures of the upper mold 1 and the lower mold 2 can adopt existing technologies, and this part is not the focus of this solution, so it will not be elaborated here.

[0060] The groove forming component 5 of this solution includes forming component A51 and forming component B52. Forming component A51 has a half-shaping structure corresponding to the groove structure of product 100; forming component B52 has the other half-shaping structure corresponding to the groove structure of product 100. Forming components A51 and B52 can be assembled into a shaping structure corresponding to the groove structure of product 100. The assembly direction of forming components A51 and B52 is parallel to the mold opening and closing direction. Forming components A51 and B52 are slidably connected. The main slider 3 is fixedly connected to forming component B52 and can move synchronously with the main slider 3. Furthermore, a secondary slider 6 is provided corresponding to forming component A51 and is linked with forming component A51. The secondary slider 6 and the main slider 3 are linked through a delay structure.

[0061] With this structure, when the mold opens, the upper mold 1 moves upward, and the guide pillar 4 drives the main slider 3 to slide away from the product 100. This causes the main slider 3 to disengage the molded part B52 from the groove position of the product 100, thus demolding half of the internal structure of the groove. After the main slider 3 has moved a certain distance (i.e., the delay of the delayed structure), the main slider 3 and the auxiliary slider 6 are linked. The main slider 3, through the auxiliary slider 6, drives the molded part A51 to disengage from the product 100, achieving demolding of the other half of the internal structure of the groove. Compared to the traditional one-time demolding method, this demolding method better ensures the quality of the groove structure processing of the product 100, allowing sufficient cooling and stabilization time for the groove position, and reducing the likelihood of stringing or deformation problems.

[0062] Based on the above implementation scheme, the lower mold 2 is provided with a sliding connection structure corresponding to the main slider 3. The sliding connection structure includes a groove 21 formed on the lower mold 2, which is a groove facing the upper mold 1. The lower part of the main slider 3 is slidably connected to the lower mold 2 through the groove 21. A pressure plate 22 is provided on both sides of the top of the groove 21, extending towards the inside of the main slider 3, with the edge of the main slider 3 located below the pressure plate 22. Two parallel lower mold positioning parts 23 are provided at the bottom of the groove 21. The lower mold positioning parts 23 are rectangular blocks, and their length direction is parallel to the sliding direction of the main slider 3. A positioning groove is formed at the bottom of the main slider 3 corresponding to the lower mold positioning parts 23, and the lower mold positioning parts 23 are slidably connected to the positioning groove. Through this structure, the stable sliding of the main slider 3 is achieved.

[0063] Based on the above implementation plan, see Figure 6 and Figure 7 The guide post 4 is a cylindrical straight rod. One end of the guide post 4, connected to the upper mold 1, is inclined towards the product 100, while the lower end is inclined away from the product 100. Figure 7 Taking the direction shown as an example, the upper end of guide post 4 is tilted to the left and the lower end is tilted to the right.

[0064] The main slider 3 includes a main connecting part 31 and a main sliding part 32, which together form an approximately "L"-shaped block. The main slider 3 is positioned between the upper mold 1 and the lower mold 2. The main connecting part 31 is located on the side of the main slider 3 closest to the product 100. The main connecting part 31 has recesses corresponding to the molded parts A51 and B52 on the side facing the grooved molding part 5. A connecting structure is provided at the lower part of the main connecting part 31 corresponding to the molded part B52, through which it is fixedly connected to the molded part B52. This connecting structure can be directly connected using bolts. The main sliding part 32 is located below the main connecting part 31 and extends in a direction away from the product 100. A positioning groove is formed on the lower side of the main sliding part 32. The pressure plate 22 extends to the upper sides of both sides of the main sliding part 32. An inclined main guide hole is formed on the main sliding part 32. The main guide hole is a through hole, and the guide post 4 is slidably connected to the main slider 3 through the main guide hole. A secondary slide groove 33 is provided at the bottom of the main sliding part 32, and the secondary slide groove 33 extends toward the product 100.

[0065] The secondary slider 6 includes a secondary linkage part 61 and a secondary sliding part 62. The secondary linkage part 61 is disposed on one side of the main connecting part 31, and a gap is left between the secondary linkage part 61 and the main connecting part 31. Figure 6 The direction shown is for illustrative purposes only. There is a gap between the left side of the secondary linkage part 61 and the right side of the main connecting part 31. The secondary sliding part 62 is provided at the lower part of the secondary linkage part 61, and the secondary sliding part 62 is slidably connected to the secondary sliding groove 33.

[0066] In addition, the upper mold 1 also includes an upper mold baffle 12, which is provided corresponding to the secondary linkage part 62. The upper mold baffle 12 is connected to the upper mold 1. In the mold closing state, the upper mold baffle 12 is located on the side of the secondary linkage part 62 away from the product 100.

[0067] When the mold opens, the main slider 3 slides to the right under the drive of the upper mold 1. Due to the aforementioned spacing and the setting of the secondary slide groove 33, in the initial stage of mold opening, the upper mold baffle 12 blocks the right side of the secondary linkage part 61, so the main slider 3 and the secondary slider 6 slide relative to each other, and the main connecting part 31 moves closer to the secondary linkage part 61. As the mold opening continues, the upper mold baffle 12 rises and disengages from the right side of the secondary linkage part 61, and the main connecting part 31 and the left side of the secondary linkage part 61 come into contact. The main slider 3 continues to move, which can drive the secondary slider 6 to start to move, thereby creating a linkage with the molded part A51.

[0068] Based on the above implementation plan, see Figure 6 As a linkage structure between the secondary slider 6 and the molding part A51, this solution is provided with a pull rod 7. One end of the pull rod 7 is fixedly connected to the molding part A51, and the other end is linked with the secondary slider 6 through the secondary linkage part 61. A pull rod through groove is provided on the main connecting part 31 corresponding to the pull rod 7.

[0069] Considering that the groove structure of product 100 has an inclined surface, the slide 21 of this solution is an inclined groove. The side of slide 21 facing product 100 is the high horizontal side, and the side away from product 100 is the low horizontal side.

[0070] The secondary linkage 61 includes a linkage groove 611, a first linkage block 612, and a second linkage block 613. The linkage groove 611 is an inclined groove formed inside the secondary linkage 61, with its upper end inclined towards the product 100. The first linkage block 612 is located inside the linkage groove 61 and is slidably connected to it; two first linkage blocks 612 are disposed inside the linkage groove 61. The second linkage block 613 is disposed between the two first linkage blocks 612, with its two sides rotatably connected to the two first linkage blocks 612 respectively, and the second linkage block 613 is fixedly connected to the pull rod 7.

[0071] This structure allows the movement of the main slider 3 and the secondary slider 6 to be adapted to the demolding movement of the molded parts A51 and B52.

[0072] Based on the above implementation plan, see Figure 6 The bottom of the molded part B52 is provided with a downward protruding boss corresponding to the secondary sliding groove 33; the secondary sliding part 62 is provided with a notch corresponding to the boss of the molded part B52.

[0073] As the main slider 3 moves, the boss of the molding part B52 can be driven toward the recess of the secondary sliding part 62. When the main connecting part 31 and the secondary linkage part 61 are in contact, the boss of the molding part B52 and the recess of the secondary sliding part 62 are engaged, which makes it easier to apply force to push the secondary sliding part 62, so that the secondary slider 6 can be subjected to force more evenly.

[0074] Based on the above implementation scheme, three molding parts A51 are provided, and each molding part A51 is provided with a secondary slider 6 and a pull rod 7. This structure also facilitates the stress distribution of the elongated groove molding part 5, ensuring stable demolding.

[0075] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0076] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0077] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0078] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0079] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0080] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A sliding demolding structure for a side-grooved molded part of an injection molded product, comprising an upper mold and a lower mold, wherein an upper mold core and a lower mold core are respectively provided for the upper mold and the lower mold, and a main slide block is further provided between the upper mold and the lower mold, the main slide block being slidably connected to the lower mold, an inclined guide post being fixedly connected to the lower side of the upper mold, and an inclined guide hole being provided on the block of the main slide block corresponding to the guide post; the guide post being slidably connected to the main slide block through the guide hole; a grooved molded part is connected to the side of the main slide block facing the product, characterized in that, The grooved molding component includes: Molded part A has a half-shaped contour structure with a corresponding product groove structure; Molded part B has a contoured structure with the other half corresponding to the groove structure of the product. Molded parts A and B can be assembled into a contoured structure corresponding to the groove structure of the product. The assembly direction of molded parts A and B is parallel to the direction of mold opening and closing. Molded part B is connected to the main slider and can move synchronously with the main slider. The secondary slider is linked with the molding part A, and the secondary slider and the main slider are linked through a delay structure.

2. The sliding demolding structure for injection molded products with lateral grooves as described in claim 1, characterized in that, The lower mold is provided with a sliding connection structure corresponding to the main slider, and the sliding connection structure includes: The slide groove is a groove that faces the upper mold, and the lower part of the main slider is slidably connected to the lower mold through the slide groove; Pressure plates are provided on both sides of the top of the slide groove, extending toward the interior of the main slider, with the edge of the main slider located below the pressure plates.

3. The sliding demolding structure for injection molded products with side grooves as described in claim 2, characterized in that, The sliding connection structure of the lower mold also includes: At least one lower mold positioning component is provided at the bottom of the slide groove. The lower mold positioning component is a rectangular block, and its length direction is parallel to the sliding direction of the main slider. The bottom of the main slider has a positioning groove corresponding to the lower mold positioning component, and the lower mold positioning component is slidably connected to the positioning groove.

4. The sliding demolding structure for injection molded products with side grooves as described in claim 3, characterized in that, The guide post is inclined at one end toward the product and at the other end toward the product. The guide post is a cylindrical rod; The main slider includes: The main connecting part is located on the side of the main slider close to the product. The side of the main connecting part facing the groove forming part has a notch corresponding to forming part A and forming part B. The lower part of the main connecting part is provided with a connecting structure corresponding to forming part B, and is fixedly connected to forming part B through the connecting structure. The main sliding part is disposed on the lower side of the main connecting part and extends in a direction away from the product; the positioning groove is formed on the lower side of the main sliding part; the pressure plate extends to the upper side of both sides of the main sliding part. A main guide hole is formed on the main sliding part. The main guide hole is an inclined through hole, and the guide post is slidably connected to the main slider through the main guide hole.

5. The sliding demolding structure for injection molded products with side grooves as described in claim 4, characterized in that, The main slider also includes: A secondary slide groove is formed at the bottom of the main sliding part and extends toward the product. The secondary slider includes: A secondary linkage is provided on one side of the main connecting part, with a gap between the secondary linkage and the main connecting part; the secondary linkage is linked with the molded part A; A secondary sliding part is disposed below the secondary linkage part, and the secondary sliding part and the secondary sliding groove are slidably connected.

6. The sliding demolding structure for injection molded products with side grooves as described in claim 5, characterized in that, The upper mold also includes: An upper mold baffle is provided corresponding to the secondary linkage part. The upper mold baffle is connected to the upper mold. In the mold-closed state, the upper mold baffle is located on the side of the secondary linkage part away from the product.

7. The sliding demolding structure for injection molded products with side grooves as described in claim 5, characterized in that, Also includes: One end of the pull rod is fixedly connected to the molded part A, and the other end is linked to the secondary slider through the secondary linkage part; The main connecting part has a pull rod through groove corresponding to the pull rod.

8. The sliding demolding structure for injection molded products with side grooves as described in claim 7, characterized in that, The chute is an inclined groove, with the side of the chute facing the product being the high horizontal side and the side away from the product being the low horizontal side. The secondary linkage unit includes: Linkage groove, an inclined groove opened inside the secondary linkage part; The first linkage block is slidably connected to the linkage groove; The second linkage block is rotatably connected to the first linkage block and fixedly connected to the pull rod.

9. The sliding demolding structure for injection molded products with side grooves as described in claim 5, characterized in that, The bottom of the molded part B is provided with a downward protruding boss corresponding to the secondary slide groove; The secondary sliding part has a notch corresponding to the boss of the molded part B.

10. The sliding demolding structure for injection molded products with side grooves as described in claim 7, characterized in that, There are several molded parts A, and each molded part A is provided with a secondary slider and a pull rod.

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