Demolding mechanism and injection mold
By designing a mold release mechanism including die core, slider and core pulling bundle, the problem of product deformation or damage caused by injection molds during the mold release process is solved, stable separation of the inverted structure and efficient mold release are achieved, and the molding quality and mold release efficiency of the product are improved.
Patent Information
- Application Number
- CN202420469420.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-03-12
AI Technical Summary
Existing injection molds are prone to deformation or damage in the mold release process, especially for products with inverted structures. Traditional oblique top or forced removal methods are difficult to effectively solve the problems of mold processing complexity and product stability.
A mold release mechanism is designed, including a mold core, a slider and a core pulling bundle. The slider and the structure in the mold core form the inner cavity of the product and are provided with an inverted adaptation structure. Through the movement of the core pulling beam block, the slider is driven to separate from the inverted structure to achieve a smooth and complete mold release operation.
The mold release mechanism can effectively separate the inverted structure of the product from the mold structure, ensure the stability and accuracy of the mold release process, avoid product deformation or damage, and improve the forming stability and molding quality of the inverted structure.
Smart Images
Figure CN222712755U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of injection molds, and in particular to a demoulding mechanism and an injection mold. Background Art
[0002] Injection molding is a common plastic processing method, which forms the desired plastic product by injecting heated molten plastic material into a mold and cooling and solidifying it in the mold. Injection mold is the key tool to realize the injection molding process, which determines the shape, size and quality of the final product.
[0003] In the prior art, a core is usually set in the mold during the injection molding process, and the injection molding operation is completed by injecting material into the core. For some products, it is necessary to achieve an undercut effect during the injection molding process, that is, there are protrusions or depressions in the product. In order to achieve this goal, a protrusion or inner groove is designed on the core to form an undercut structure. Currently, the demolding of molds with internal undercuts in products on the market usually adopts the traditional inclined top or forced demolding method. If the traditional inclined top is used to deal with it, due to the complexity of the traditional inclined top and the internal undercut structure of the product, it will face the challenges of complex mold processing and poor mold strength, which will lead to high manufacturing and maintenance costs of the mold; if the forced demolding method is used to deal with it, it may cause deformation or damage to the product; therefore, it is necessary to improve the demolding mechanism of the inner cavity undercut of the injection mold. Utility Model Content
[0004] In order to solve the problem that the existing demoulding method may cause product deformation or damage, the present application provides a demoulding mechanism and an injection mold.
[0005] The demoulding mechanism and injection mold provided in this application adopt the following technical solutions:
[0006] A demoulding mechanism comprises a mold core and a slider arranged in the mold core, wherein the slider and the mold core are combined to form an inner cavity of the product, and the slider is provided with a structure adapted to the undercut of the product; further comprising a core pulling block, wherein the core pulling block extends into the mold core and presses and fixes the slider member in the mold core, and the core pulling block is slidably connected to the slider; the core pulling block is driven to move toward a side away from the product, thereby driving the slider to move toward a side away from the undercut, so that the structure is separated from the undercut.
[0007] By adopting the above technical scheme, when the injection molding of the product is completed, the core pulling block is driven to move toward the side away from the product. Due to the matching relationship between the core pulling block and the sliding connection of the slider, during the movement of the core pulling block, the slider will move toward the undercut side away from the product as the core pulling block moves, thereby separating the slider from the undercut of the product; utilizing the design of the demoulding mechanism of the present application, the undercut structure on the product can be effectively separated from the structure on the mold, thereby achieving a smooth and complete demoulding operation. At the same time, by controlling the movement of the core pulling block, the coordinated movement of the slider and the mold core can be achieved, ensuring the stability and accuracy of the demoulding process; and during the injection molding of the product, the demoulding mechanism of the present application can limit the position of the slider during the injection molding process by tightly fixing the slider with the core pulling block, thereby preventing the slider from retreating due to the impact force, resulting in unstable injection molding of the undercut structure, thereby improving the molding stability and molding quality of the undercut structure.
[0008] In a specific possible implementation scheme, the sliders and the core pulling bundle blocks are each provided with two and one-to-one correspondence, the sliders are each provided with a slide groove, the core pulling bundle blocks are each passed through the slide groove and inserted into the mold core to tightly fix the two sliders, and the core pulling bundle blocks slide and contact in the slide groove.
[0009] By adopting the above technical solution and utilizing the slide groove design on the slider, it is possible to facilitate the insertion of the core pulling block into and fix the slider, and to facilitate the loading and unloading adjustment of the core pulling block and the slider. In addition, during the demolding process, the slide groove design can ensure the stability of the positional relationship between the slider and the core pulling block, thereby improving the accuracy and reliability of the sliding fit between the core pulling block and the slider during the demolding process.
[0010] In a specific possible implementation mode, a sliding inclined surface is provided on the core pulling bundle block, and a matching inclined surface is provided on a side of the sliding block close to the sliding groove, and the sliding inclined surface is in contact with and fits with the matching inclined surface.
[0011] By adopting the above technical scheme, the design of the sliding bevel and the matching bevel can be used to optimize the connection method between the core pulling bundle block and the slider, so that the core pulling bundle block can move smoothly when sliding, reducing resistance and friction, improving the smoothness and efficiency of operation, and ensuring that the core pulling bundle block and the slider are firmly connected to avoid loosening or falling off during use. At the same time, it helps to accurately position the core pulling bundle block and the slider to ensure the accuracy and stability of operation.
[0012] In a specific implementation scheme, the surface area of the matching slope is set to S, and the contact area between the slider and the core-pulling bundle block is set to S1; when the structure of the slider is separated from the undercut, S1 occupies 1 / 2-1 / 3 of S.
[0013] By adopting the above technical solution and utilizing the above parameter design, by ensuring that the ratio of S1 to S is appropriate, the slider and the product undercut are accurately separated, the product molding quality is ensured, and when the slider is separated from the undercut, the core pulling block and the slider still maintain a certain contact area, which helps to maintain the connection between the two, ensuring that the core pulling block and the slider can be smoothly reset before the next work, thereby improving work efficiency.
[0014] In a specific possible implementation scheme, a guide portion is further provided on the core-pulling bundle block, a guide groove is provided on the groove wall of the slide groove, and the guide portion is inserted into the guide groove and slides against the guide groove.
[0015] By adopting the above technical solution, the guide part is inserted into the guide groove and slides into contact, so that the sliding cooperation between the core pulling bundle block and the slider can be ensured to be more stable, the positioning of the core pulling bundle block during the sliding process can be achieved, and the accuracy and stability during operation can be guaranteed; and the connection between the core pulling bundle block and the slider is made firmer, which is convenient for subsequent resetting operations.
[0016] In a specific possible implementation manner, the slider and the core-pulling bundle block are both symmetrically arranged along the axis of the mold core.
[0017] By adopting the above technical solution, the structural design of the demolding mechanism can be simplified by symmetrically arranging the slider and the core pulling block along the axis of the mold core. The symmetrical arrangement can make the force between the core pulling block and the slider more balanced during the demolding process, which is beneficial to improving the overall stability and demolding efficiency.
[0018] In a specific possible implementation manner, the moving direction of the core pulling bundle is perpendicular to the moving direction of the sliding block.
[0019] By adopting the above technical solution and utilizing the design that the movement direction of the core pulling block is perpendicular to the movement direction of the slider, the slider can be effectively prevented from being stuck or blocked during the demolding process, thereby ensuring the effective separation of the slider from the product undercut. In addition, the vertical movement can better utilize the space in the mold core, realize the demolding operation in a limited space, and improve the compactness and efficiency of the demolding mechanism.
[0020] In a specific possible implementation scheme, it also includes an ejector pin, which passes through the mold core and is slidably disposed in the mold core and the slider. After the undercut is separated from the slider, the ejector pin is driven to move toward one side of the product to eject the product and separate it from the mold core.
[0021] By adopting the above technical solution, when the slider is separated from the product by undercut, the ejector pin is driven to move to one side of the product to eject the product and separate it from the mold core, thereby completing the demoulding process. The ejector pin can ensure that the product is smoothly ejected from the mold core. The sliding movement of the ejector pin is set in the mold core and the slider, which can effectively control the direction of ejecting the product and avoid damage to the product or the mold core.
[0022] An injection mold has a demoulding mechanism as described above, the injection mold includes a male mold and a female mold, the demoulding mechanism is arranged on the male mold and cooperates with the female mold; driving the male mold to move drives the core pulling bundle of the demoulding mechanism to move, thereby driving the slider to separate from the undercut.
[0023] By adopting the above technical solution, when working, when the male mold is driven to move, the core pulling block is driven to move, and then the slider is driven to separate from the undercut, and then the female mold is opened to remove the entire product to complete the demoulding. By first separating the undercut structure of the product for demoulding, the problem that the existing demoulding method may cause product deformation or damage can be solved, thereby ensuring the integrity and quality of the overall product after demoulding.
[0024] In a specific possible implementation scheme, the mother mold is provided with an injection pin, which is inserted into the demoulding mechanism, passes through the mold core and the slider, and is inserted into the ejector pin to cooperate and fix therewith.
[0025] By adopting the above technical solution, during injection molding, the injection molding pin can be used to directly inject the material into the mold core and the slider to form a product. The coordinated and fixed design of the injection molding pin and the ejector pin plays a role in positioning and supporting, thereby improving the stability and efficiency of the injection molding process.
[0026] In summary, the present application includes at least one of the following beneficial technical effects:
[0027] 1. The design of the demoulding mechanism of the present application can effectively separate the undercut structure on the product from the structure on the mold, thereby achieving a smooth and complete demoulding operation. At the same time, by controlling the movement of the core-pulling bundle block, the coordinated movement of the slider and the mold core can be achieved, ensuring the stability and accuracy of the demoulding process; and during the product injection molding process, the demoulding mechanism of the present application can limit the position of the slider during the injection molding process by tightly fixing the slider with the core-pulling bundle block, preventing the slider from retreating due to the impact force, resulting in unstable injection molding of the undercut structure, thereby improving the molding stability and molding quality of the undercut structure;
[0028] 2. The present application utilizes the design of the sliding slope and the matching slope to optimize the connection between the core pulling block and the slider, so that the core pulling block can move smoothly when sliding, reduce resistance and friction, improve the smoothness and efficiency of the operation, and ensure that the core pulling block and the slider are firmly connected to avoid loosening or falling off during use. At the same time, it helps to accurately position the core pulling block and the slider to ensure the accuracy and stability of the operation;
[0029] 3. This application ensures that the ratio of S1 to S is appropriate, so that the slider and the product undercut are accurately separated, the product molding quality is ensured, and when the slider is separated from the undercut, the core pulling block and the slider still maintain a certain contact area, which helps to maintain the connection between the two, ensuring that the core pulling block and the slider can be smoothly reset before the next work, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a structural schematic diagram of the demoulding mechanism of an embodiment of the present application.
[0031] Figure 2 It is a cross-sectional view used to show the slider and the core pulling block.
[0032] Figure 3 It is a schematic diagram for showing the structure of the slider and the core pulling block.
[0033] Figure 4 It is a cross-sectional view used to show the mold core, slider, core puller block and ejector pin.
[0034] Figure 5 It is a schematic diagram of the structure of the injection mold of the embodiment of the present application.
[0035] Explanation of the reference numerals: 1. demoulding mechanism; 2. mold core; 3. slider; 31. protrusion; 32. slide groove; 33. matching slope; 34. guide groove; 4. core-pulling block; 41. sliding slope; 42. guide part; 5. ejector pin; 6. male mold; 7. female mold; 71. fixing seat; 72. injection molding pin. DETAILED DESCRIPTION
[0036] The following is combined with Figure 1-5 This application is described in further detail.
[0037] Example 1
[0038] Reference Figure 1 and Figure 2The embodiment of the present application discloses a demoulding mechanism, including a mold core 2 and a slider 3 arranged in the mold core 2. In the embodiment, the mold core 2 has an outer shape structure adapted to the inner cavity of the product. The slider 3 and the mold core 2 are combined to form the inner cavity of the product. The slider 3 is provided with a structure adapted to the undercut of the product on one side close to the inner cavity. The structure adapted to the undercut of the product includes but is not limited to a protrusion and a groove structure. In the embodiment, the slider 3 is provided with a protrusion 31 adapted to the undercut of the product.
[0039] It also includes a core-pulling bundle block 4, and the slider 3 and the core-pulling bundle block 4 are both set to two and correspond to each other. The slider 3 and the core-pulling bundle block 4 are symmetrically arranged along the axis of the mold core 2; this symmetrical design can simplify the structural design of the demoulding mechanism 1, and the symmetrical arrangement can make the forces of the core-pulling bundle block 4 and the slider 3 more balanced during the demoulding process, which is conducive to improving the overall stability and demoulding efficiency;
[0040] Reference Figure 2 and Figure 3 , the sliders 3 are all provided with slide grooves 32, the core pulling bundle blocks 4 are all passed through the slide grooves 32 and inserted into the mold core 2 to tightly fix the two sliders 3 in the mold core 2, and the core pulling bundle blocks 4 slide and abut in the slide grooves 32; the core pulling bundle blocks 4 are driven to move toward the side away from the product, and the sliders 3 are driven to move toward the side away from the undercut, so that the protrusions 31 are separated from the undercut;
[0041] In this embodiment, the Figure 1 The dotted line indicated in the figure represents the moving direction, wherein the dotted line a in the vertical direction represents the moving direction of the core-pulling bundle block 4, and the dotted line b in the horizontal direction represents the moving direction of the slider 3; during operation, the core-pulling bundle block 4 moves relatively downward in the vertical direction toward the side away from the product, driving the slider 3 to move relatively outward in the horizontal direction toward the side away from the product. In this process, the moving direction of the core-pulling bundle block 4 is perpendicular to the moving direction of the slider 3;
[0042] In this process, the design of the slide groove 32 can facilitate the insertion of the core pulling bundle block 4 into and fix the slider 3, and facilitate the loading and unloading adjustment of the core pulling bundle block 4 and the slider 3. In addition, during the demoulding process, the design of the slide groove 32 can ensure the stability of the positional relationship between the slider 3 and the core pulling bundle block 4, thereby improving the accuracy and reliability of the sliding fit relationship between the core pulling bundle block 4 and the slider 3 during the demoulding process; the core pulling bundle block 4 is pressed against and fixed to the slider 3, so that the position of the slider 3 can be limited during the injection molding process, and the slider 3 can be prevented from retreating due to the impact force, resulting in the problem of unstable injection molding of the undercut structure, thereby improving the molding stability and molding quality of the undercut structure;
[0043] Reference Figure 3 and Figure 4, a sliding slope 41 is provided on the core pulling bundle block 4. In the present embodiment, the sliding slope 41 forms an acute angle with the vertical direction. A matching slope 33 is provided on the side of the slider 3 close to the slide groove 32. The sliding slope 41 and the matching slope 33 are in contact with each other. In the present embodiment, the sliding slope 41 and the matching slope 33 include but are not limited to flat slopes; the design of the sliding slope 41 and the matching slope 33 can optimize the connection mode between the core pulling bundle block 4 and the slider 3, so that the core pulling bundle block 4 can move smoothly when sliding, reduce resistance and friction, improve the smoothness and efficiency of operation, and ensure that the core pulling bundle block 4 and the slider 3 are firmly connected to avoid loosening or falling off during use. At the same time, it helps to accurately position the core pulling bundle block 4 and the slider 3 to ensure the accuracy and stability of operation;
[0044] The surface area of the matching inclined surface 33 is set to S, and the contact area between the slider 3 and the core-pulling bundle block 4 is set to S1; when the protrusion 31 of the slider 3 is separated from the undercut, S1 occupies 1 / 2-1 / 3 of S; by ensuring that the proportion of S1 to S is appropriate, the slider 3 is accurately separated from the product undercut, the product molding quality is ensured, and when the slider 3 is separated from the undercut, the core-pulling bundle block 4 and the slider 3 still maintain a certain contact area, which helps to maintain the connection between the two, ensuring that the core-pulling bundle block 4 and the slider 3 can be smoothly reset before the next work, thereby improving work efficiency;
[0045] Reference Figure 4 , a guide portion 42 is also provided on the core-pulling bundle block 4. In the present embodiment, the guide portion 42 is located on the side away from the matching inclined surface 33 of the slider 3. A guide groove 34 is provided on the groove wall of the slide groove 32. In the present embodiment, the slide groove 32 and the guide groove 34 are combined to form a T-shaped groove, and the guide portion 42 is inserted into the guide groove 34 and slides and abuts against the guide groove 34; the above design, through the guide portion 42 inserted into the guide groove 34 and slidingly abuts against, can ensure that the sliding cooperation between the core-pulling bundle block 4 and the slider 3 is more stable, can realize the positioning of the core-pulling bundle block 4 during the sliding process, ensure the accuracy and stability during work, and make the connection between the core-pulling bundle block 4 and the slider 3 more firm, which is convenient for the subsequent resetting operation;
[0046] When the injection molding of the product is completed, the core pulling bundle block 4 is driven to move downward in the vertical direction toward the side away from the product. Due to the matching relationship between the core pulling bundle block 4 and the sliding connection of the slider 3 and the contact and fitting design of the sliding inclined surface 41 and the matching inclined surface 33, during the movement of the core pulling bundle block 4, as the core pulling bundle block 4 moves, the sliding inclined surface 41 gradually moves downward, and the pressing force of the core pulling bundle block 4 on the slider 3 is gradually released. At this time, the matching inclined surface 33 of the slider 3 slides along the sliding inclined surface 41 of the core pulling bundle block 4, so that the slider 3 moves relatively outward in the horizontal direction toward the undercut side away from the product. When the slider 3 moves to the point where the contact area between the slider 3 and the core pulling bundle block 4 accounts for 1 / 2-1 / 3 of the matching inclined surface 33 of the slider 3, the slider 3 is separated from the undercut of the product to achieve demoulding; and when the slider 3 is separated from the undercut, the core pulling bundle block 4 and the slider 3 still maintain a certain contact area, which helps to maintain the connection between the two and ensure that the core pulling bundle block 4 and the slider 3 can be smoothly reset before the next work;
[0047] When resetting is required, the core pulling block 4 is driven to move upward in the vertical direction. As the core pulling block 4 moves, the sliding slope 41 gradually moves upward, gradually increasing the clamping force of the core pulling block 4 on the slider 3. At this time, the matching slope 33 of the slider 3 slides along the sliding slope 41 of the core pulling block 4, so that the slider 3 moves relatively inward in the horizontal direction. When the core pulling block 4 is inserted into and abuts against the core 2, the movement can be stopped. At this time, the slider 3 is 100% in contact with the core pulling block 4, and the core pulling block 4 presses and fixes the slider 3 in the core 2 to complete the resetting work.
[0048] Reference Figure 4 The demoulding mechanism 1 also includes an ejector pin 5, which passes through the mold core 2. The ejector pin 5 is slidably arranged in the mold core 2 and the slider 3. In this embodiment, the cross-sectional area of the ejector pin 5 is smaller than the cross-sectional area of the inner cavity formed by the two sliders 3. After the undercut is separated from the slider 3, the ejector pin 5 is driven to move toward one side of the product and inserted between the two sliders 3 to eject the product and separate it from the mold core 2; when the slider 3 is separated from the undercut of the product, the ejector pin 5 is driven to move toward one side of the product to eject the product and separate it from the mold core 2, thereby completing the demoulding process. The ejector pin 5 can ensure that the product is smoothly ejected from the mold core 2. The ejector pin 5 is slidably arranged in the mold core 2 and the slider 3, which can effectively control the direction of ejecting the product to avoid damaging the product or the mold core 2.
[0049] The implementation principle of Example 1 is as follows: the design of the demoulding mechanism 1 of the present application can effectively separate the undercut structure on the product from the protrusion 31 on the mold, thereby achieving a smooth and complete demoulding operation. At the same time, by controlling the movement of the core-pulling bundle block 4, the coordinated movement of the slider 3 and the mold core 2 can be achieved, ensuring the stability and accuracy of the demoulding process; and during the product injection molding process, the demoulding mechanism 1 of the present application can limit the position of the slider 3 by the core-pulling bundle block 4 to fix the slider 3 tightly during the injection molding process, preventing the slider 3 from being retreated by the impact force, resulting in the instability of the injection molding of the undercut structure, thereby improving the molding stability and molding quality of the undercut structure;
[0050] When the injection molding of the product is completed, the core pulling bundle block 4 is driven to move downward in the vertical direction toward the side away from the product. Due to the matching relationship between the core pulling bundle block 4 and the sliding connection of the slider 3 and the contact and fit design between the sliding bevel 41 and the matching bevel 33, during the movement of the core pulling bundle block 4, as the core pulling bundle block 4 moves, the sliding bevel 41 gradually moves downward, and the pressing force of the core pulling bundle block 4 on the slider 3 is gradually released. At this time, the matching bevel 33 of the slider 3 slides along the sliding bevel 41 of the core pulling bundle block 4, so that the slider 3 moves relatively outward in the horizontal direction toward the undercut side away from the product. When the slider 3 moves to the point where the contact area between the slider 3 and the core pulling bundle block 4 accounts for 1 / 2-1 / 3 of the matching bevel 33 of the slider 3, the slider 3 is separated from the undercut of the product, and one-time demolding is achieved.
[0051] When the slider 3 is separated from the product by undercut, the ejector pin 5 is driven to move toward the product side, and the ejector pin 5 moves toward the product side and is inserted between the two sliders 3 to eject the product, so as to separate the product from the mold core 2 and complete the secondary demoulding, thereby achieving smooth and complete demoulding of the entire product;
[0052] When it is necessary to reset for the next injection molding, the core pulling block 4 is driven to move upward in the vertical direction. As the core pulling block 4 moves, the sliding slope 41 gradually moves upward, gradually increasing the clamping force of the core pulling block 4 on the slider 3. At this time, the matching slope 33 of the slider 3 slides along the sliding slope 41 of the core pulling block 4, so that the slider 3 moves relatively inward in the horizontal direction. When the core pulling block 4 is inserted into and abuts against the core 2, the movement can be stopped. At this time, the slider 3 is 100% in contact with the core pulling block 4, and the core pulling block 4 presses and fixes the slider 3 in the core 2 to complete the reset work, thereby ensuring the stable progress of subsequent injection molding work.
[0053] Example 2
[0054] Reference Figure 5The present application provides an injection mold having a demoulding mechanism as described in Example 1, the injection mold comprising a male mold 6 and a female mold 7, the demoulding mechanism 1 being arranged on the male mold 6 and cooperating with the female mold 7; in this embodiment, the bundle block of the demoulding mechanism 1 includes but is not limited to being fixed to the male mold 6 by bolts, driving the male mold 6 to move and driving the core-pulling bundle block 4 of the demoulding mechanism 1 to move, thereby driving the slider 3 to separate from the undercut;
[0055] The female mold 7 is provided with an injection molding pin 72. In the present embodiment, the injection molding pin 72 is fixed to the female mold 7 by a fixing seat 71. The injection molding pin 72 is inserted into the demoulding mechanism 1, passes through the mold core 2 and the slider 3, and is inserted into the ejector pin 5 to cooperate and fix therewith. In the present embodiment, the mold core 2 of the demoulding mechanism 1 is fixed to the male mold 6, and one side of the mold core 2 is inserted into the fixing seat 71 of the female mold 7 to cooperate with the injection molding pin 72. The injection molding pin 72 passes through the mold core 2 and the slider 3, and is inserted into the ejector pin 5 to cooperate and fix therewith. A gap is left between the injection molding pin 72, the mold core 2, the slider 3, and the fixing seat 71, and they are combined to form a product molding cavity, thereby realizing the design of cooperation between the demoulding mechanism 1 on the male mold 6 and the female mold 7. In the process, the injection molding pin 72 can directly inject the material into the product molding cavity to form a product. The cooperation and fixing design of the injection molding pin 72 and the ejector pin 5 plays a role of positioning and supporting, thereby improving the stability and efficiency of the injection molding process.
[0056] The implementation principle of Example 2 is as follows: during the injection molding process, the material is directly injected into the product molding cavity through the injection molding needle 72 to form the product and to form an undercut structure in the slider 3, thus completing the molding of the entire product, and then demoulding is performed after cooling;
[0057] During the demoulding process, when the male mold 6 is driven to move, the core pulling block 4 is moved, and then the slider 3 is separated from the undercut, and then the female mold 7 is opened, and the product is ejected by the ejector pin 5, so that the product is separated from the mold core 2, and the entire product is removed to complete the demoulding. In this process, the design of separating and demoulding the undercut structure of the product before demoulding the entire product can solve the problem that the existing demoulding method may cause product deformation or damage, thereby ensuring the integrity and quality of the overall product after demoulding.
[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A demoulding mechanism, characterized in that: It comprises a mold core (2) and a slider (3) arranged in the mold core (2), wherein the slider (3) and the mold core (2) are combined to form an inner cavity of a product, and the slider (3) is provided with a structure adapted to the undercut of the product; It also includes a core-pulling bundle block (4), which extends into the mold core (2) and presses and fixes the slider (3) inside the mold core (2), and the core-pulling bundle block (4) is slidably connected to the slider (3); the core-pulling bundle block (4) is driven to move toward a side away from the product, driving the slider (3) to move toward a side away from the undercut, so that the structure is separated from the undercut.
2. The demoulding mechanism according to claim 1, characterized in that: The sliders (3) and the core-pulling bundle blocks (4) are both provided in two and one-to-one correspondence, and the sliders (3) are each provided with a slide groove (32). The core-pulling bundle blocks (4) pass through the slide groove (32) and are inserted into the mold core (2) to tightly fix the two sliders (3), and the core-pulling bundle blocks (4) slide and abut against the slide groove (32).
3. The demoulding mechanism according to claim 2, characterized in that: The core pulling bundle block (4) is provided with a sliding inclined surface (41), and the sliding block (3) is provided with a matching inclined surface (33) on one side close to the sliding groove (32), and the sliding inclined surface (41) is in contact with and fits with the matching inclined surface (33).
4. The demoulding mechanism according to claim 3, characterized in that: The surface area of the matching inclined surface (33) is set to S, and the contact area between the slider (3) and the core-pulling bundle block (4) is set to S1; when the structure of the slider (3) is separated from the undercut, S1 occupies a range of 1 / 2-1 / 3 of S.
5. The demoulding mechanism according to claim 2, characterized in that: The core-pulling bundle block (4) is also provided with a guide portion (42), a guide groove (34) is provided on the groove wall of the slide groove (32), and the guide portion (42) is inserted into the guide groove (34) and slides against the guide groove (34).
6. The demoulding mechanism according to claim 2, characterized in that: The slider (3) and the core-pulling bundle block (4) are both symmetrically arranged along the axis of the mold core (2).
7. The demoulding mechanism according to claim 1, characterized in that: The movement direction of the core-pulling bundle block (4) is perpendicular to the movement direction of the slider (3).
8. The demoulding mechanism according to claim 1, characterized in that: It also includes an ejector pin (5), which passes through the mold core (2). The ejector pin (5) is slidably arranged in the mold core (2) and the slider (3). After the undercut is separated from the slider (3), the ejector pin (5) is driven to move toward one side of the product to eject the product and separate it from the mold core (2).
9. An injection mold having a demoulding mechanism according to any one of claims 1 to 8, characterized in that: The injection mold comprises a male mold (6) and a female mold (7); the demoulding mechanism (1) is arranged on the male mold (6) and cooperates with the female mold (7); the male mold (6) is driven to move, thereby driving the core-pulling bundle block (4) of the demoulding mechanism (1) to move, thereby driving the slider (3) to separate from the undercut.
10. The injection mold according to claim 9, characterized in that: The mother mold (7) is provided with an injection molding needle (72); the injection molding needle (72) is inserted into the demoulding mechanism (1), passes through the mold core (2) and the slider (3), and is inserted into the ejector pin (5) to cooperate and fix therewith.