Demolding mechanism and injection mold

Abstract

The utility model relates to a demolding mechanism and an injection mold and relates to the technical field of molds, the demolding mechanism comprises a first sliding block and a wedge block, the first sliding block and the wedge block are arranged on the two sides of a cavity to form the side wall of the cavity, and the first sliding block and the wedge block are provided with structures corresponding to inverted buckles of a product; the elastic piece is arranged on the fixed mold and is connected with the first sliding block; the linkage piece is connected with the first sliding block and the wedge block; one end of the binding block is fixed on the movable mold, the other end of the binding block is arranged on the fixed mold in a penetrating manner and penetrates through the first sliding block, and the binding block abuts against the first sliding block and abuts against the linkage piece; by means of the synergistic effect of the beam block, the first sliding block, the wedge block, the linkage piece and the elastic piece, automation and continuity of the demolding process are achieved, the problem that demolding of a plastic product of a multi-inverted-buckle structure is difficult is solved, separation of multiple inverted buckles can be effectively achieved, and therefore the demolding efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of molds, and in particular to a demoulding mechanism and an injection mold. Background Art

[0002] In the field of plastic product production, plastic products are widely used in transportation, electrical industry, chemical industry, medical and daily necessities due to their excellent physical and chemical properties, plasticity and sustainable utilization. Among them, the mass production of most plastic products usually relies on injection molds.

[0003] In actual production, some plastic products are often designed with complex multi-undercut structures to achieve assembly and use functions. In the prior art, when the inner and outer side walls of the molded parts of plastic products are equipped with different undercut structures such as holes, grooves, and bosses, they often face the problem of demoulding difficulties; in this case, in order to enable the molded products to be demoulded smoothly, the mold usually needs to be designed with multiple core pulling directions. However, due to the operation involving multiple core pulling directions, the demoulding process takes a long time and the overall demoulding efficiency is low. In addition, due to the complex demoulding operation, the demoulding quality cannot be fully guaranteed, which may cause product damage or increase production costs.

[0004] Therefore, how to improve the demoulding efficiency of plastic products with multiple undercut structures and ensure product quality has become a technical problem that needs to be urgently solved in the current field of plastic product production. Utility Model Content

[0005] In order to improve the demoulding efficiency of plastic products with multiple undercut structures and ensure product quality, the present application provides a demoulding mechanism and an injection mold.

[0006] The demoulding mechanism and injection mold provided in this application adopt the following technical solutions:

[0007] A demoulding mechanism is used for separating a mold from a product, wherein the mold comprises a movable mold and a fixed mold, and a cavity for molding the product is provided between the movable mold and the fixed mold; the demoulding mechanism comprises:

[0008] A first slider and a wedge block, wherein the first slider and the wedge block are disposed on both sides of the cavity to form a side wall of the cavity, and the first slider and the wedge block have a structure corresponding to the undercut of the product;

[0009] an elastic member, the elastic member being arranged on the fixed mold and connected to the first sliding block;

[0010] A linkage member connecting the first slider and the wedge block;

[0011] A bundle block, one end of which is fixed on the movable mold, and the other end of which is passed through the fixed mold and the first slider, and the bundle block abuts against the first slider and the linkage member;

[0012] When the mold is opened, the movement of the movable mold drives the bundle block to move, the bundle block releases the restriction on the first slider and the linkage member, the elastic member pulls the first slider to move, the first slider is separated from the undercut of the product, and at the same time, the first slider drives the linkage member to move, the linkage member drives the wedge block to move, and the wedge block is separated from the undercut of the product.

[0013] By adopting the above technical scheme, when the mold is opened, the movable mold moves, driving the bundle block to move together. Under the action of the movable mold, the bundle block releases the restriction on the first slider and the linkage member. The elastic member plays a role at this time, pulling the first slider to move. Due to the design of the demoulding mechanism, the first slider is separated from the undercut of the product; at the same time, the movement of the first slider also drives the movement of the linkage member, and the linkage member further drives the wedge block to move. The movement of the wedge block eventually causes the wedge block to be separated from the undercut of the product, completing the entire undercut demoulding process; the present application utilizes the synergistic effect of the bundle block, the first slider, the wedge block, the linkage member and the elastic member on the movable mold and the fixed mold to realize the automation and continuity of the demoulding process, solves the problem of the difficulty in demoulding of plastic products with multiple undercut structures, effectively realizes the separation of multiple undercuts, and improves the demoulding efficiency; and the structure of the elastic member and the linkage member makes the demoulding process more stable and controllable, reduces the need for manual intervention and operation, and improves the stability and consistency of production, thereby achieving the effect of improving production efficiency, reducing costs and ensuring product quality, and has significant technical advantages and economic benefits.

[0014] In a specific feasible implementation scheme, the linkage comprises a second slider and a third slider, the second slider is fixedly connected to the first slider, the second slider is slidably connected to the third slider, the third slider is slidably connected to the wedge block, and one end of the bundle block passing through the first slider is abutted against the second slider; the moving direction of the second slider is the same as the moving direction of the first slider, the moving direction of the second slider is perpendicular to the moving direction of the third slider, and the moving direction of the wedge block is opposite to the moving direction of the first slider and perpendicular to the moving direction of the third slider.

[0015] By adopting the above technical scheme, during the demoulding work, the movement of the movable mold drives the movement of the bundle block, and the bundle block releases the abutment restriction on the first slider and the second slider. The elastic member plays a role at this time, pulling the first slider to move backward toward the side away from the undercut of the product, so that the first slider is separated from the undercut of the product; at the same time, since the second slider is fixedly connected to the first slider, the second slider will also move backward, and the movement of the second slider causes the third slider to move downward relatively. The movement of the third slider drives the wedge block to move forward relative to the side away from the undercut of another product, so that the wedge block is separated from the undercut of the product, and the demoulding work is completed; through the complex structure and coordinated movement of the linkage parts, efficient demoulding of plastic products with multiple undercut structures is achieved, and the synergy between the various components makes the demoulding process more stable and reliable, which can ensure the demoulding quality of the product and the stability of production, and realizes the automation and continuity of demoulding, reduces manual intervention, and improves production efficiency.

[0016] In a specific feasible implementation scheme, the bundle block is provided with a first limiting slope and a second limiting slope, the first limiting slope abuts against the inner wall of the first slider, and the second limiting slope abuts against the outer wall of the second slider; the first limiting slope and the second limiting slope are arranged at 5°-25° with respect to the vertical direction.

[0017] By adopting the above technical solution, in the mold closing stage, the first limiting bevel conflicts with the inner wall of the first slider, and the second limiting bevel conflicts with the outer wall of the second slider. The first limiting bevel and the second limiting bevel form a backhoe structure, so that the bundle block can limit the movement of the first slider and the second slider, ensuring that they are in the correct position and accurately aligned when the mold is closed; the setting angle of the first limiting bevel and the second limiting bevel is between 5°-25°, so that the bundle block can move smoothly in the mold opening stage without getting stuck or blocked, thereby improving the reliability and stability of the mold.

[0018] In a specific feasible implementation scheme, the second slider is slidably connected to the third slider via a first mortise and tenon structure; the second slider is provided with a first inclined plane, the third slider moves along the first inclined plane, and the first inclined plane is set at 5°-25° with respect to the horizontal direction.

[0019] By adopting the above technical solution, when the second slider moves backward, the third slider will move downward relatively along the first inclined surface on the second slider. During this process, through the setting of the first inclined surface, the second slider can accurately guide the movement direction and trajectory of the third slider, thereby ensuring the position accuracy and repeatability required in the manufacturing process; the inclination angle of the first inclined surface is between 5°-25°, which can reduce the friction and resistance of the third slider on the contact surface with the second slider when the third slider moves along the inclined surface, and can prevent jamming or obstruction.

[0020] In a specific feasible implementation scheme, the third slider is slidably connected to the wedge block via a second mortise and tenon structure; the third slider is provided with a second inclined surface, the wedge block abuts against and moves along the second inclined surface, and the second inclined surface is set at 5°-25° with the vertical direction.

[0021] By adopting the above technical solution, when the third slider moves downward, the wedge block is guided by the second inclined surface and moves relatively forward in the direction away from the product undercut, and is separated from the product undercut to achieve the release work; through the setting of the second inclined surface, the wedge block moves along the inclined surface to achieve smooth connection and separation between the wedge block and the product, thereby improving production efficiency and product quality. The setting of the second inclined surface at 5°-25° can prevent the occurrence of jamming, improve the stability of the release work, and reduce the adverse effects caused by friction or resistance.

[0022] In a specific possible implementation mode, the third sliding block is further provided with a third inclined surface, the third inclined surface is in contact with and fits against the inner wall of the fixed mold, and the third inclined surface is arranged at an angle of 0°-15° with respect to the vertical direction.

[0023] By adopting the above technical solution, the backhoe structure is formed by the abutment between the third inclined surface and the inner wall of the fixed mold, so as to achieve stable abutment of the third slider on the wedge block, thereby ensuring the stability and accuracy of the operation process; and the third inclined surface is set at 0°-15°, which effectively prevents the occurrence of jamming and ensures the reliability and stability of the third slider during long-term operation.

[0024] In a specific possible implementation scheme, it also includes an auxiliary spring, a mounting groove is provided on the side of the second sliding block away from the bundle block, the auxiliary spring is arranged in the mounting groove, one end of the auxiliary spring is in contact with the inner wall of the fixed mold, and the other end is in contact with the bottom wall of the mounting groove.

[0025] By adopting the above technical solution, when the mold is opened, the bundle block will release the restriction on the first slider and the second slider. At this time, the elastic member will pull the first slider to move backward to the side away from the product undercut. Since the first slider is fixedly connected to the second slider, the movement of the first slider will drive the second slider to move together. During this process, the auxiliary spring will assist in pushing the movement of the second slider. The existence of the auxiliary spring increases the stability of the second slider during movement, ensures the smooth movement of the second slider, improves the demolding efficiency, and helps to improve production efficiency and the service life of the mold.

[0026] In a specific possible implementation scheme, the fixed mold is provided with a movable groove, and the elastic member includes a driving screw and a driving spring arranged in the movable groove, one end of the driving screw passes through the movable groove and is connected to the first sliding block, the driving screw slides in the movable groove, and the driving spring is sleeved on the driving screw, one end of the driving spring is in contact with the driving screw, and the other end is in contact with the groove wall of the movable groove.

[0027] By adopting the above technical solution, when the movable mold moves, the bundle block releases the restriction on the first slider. At this time, the driving spring will stretch, thereby driving the driving screw to move backward. The movement of the driving screw will pull the first slider to move backward toward the side away from the product undercut; through the design of the driving screw and the driving spring, the first slider can be accurately controlled, so that the release and reset movement of the first slider are smooth and reliable, and the configuration of the driving screw and the driving spring is simple, thereby reducing the number and complexity of mechanical components.

[0028] In a specific possible implementation scheme, it also includes a tilted ejector assembly, which is inserted into the fixed mold, and the top surface of the tilted ejector assembly is on the same horizontal plane as the bottom surface of the cavity, and the tilted ejector assembly is used to drive the product to be ejected and separated from the fixed mold.

[0029] By adopting the above technical solution, after the release work is completed, the inclined ejector mechanism is driven to move upward, and the inclined ejector mechanism pushes the product out of the cavity, so that the product is ejected from the fixed mold, and the separation of the product and the mold is achieved; the inclined ejector mechanism has high stability and reliability, so that the product can be quickly and smoothly taken out of the mold, thereby improving production efficiency, and can reduce damage or deformation to the product, thereby improving product quality.

[0030] An injection mold has the demoulding mechanism as described above.

[0031] By adopting the above technical scheme, the injection mold utilizes the above demoulding mechanism to realize the inner and outer side undercut demoulding of the product. No matter how complex the shape and structure of the product are, it can be completely demoulded to ensure the shape integrity and accuracy of the product; the linkage design of the demoulding mechanism can make the entire demoulding process smoother and more stable. The smooth linkage and comprehensive demoulding ability of the demoulding mechanism during the demoulding process enable the product to be completely and accurately demoulded from the mold, avoiding product quality problems caused by incomplete demoulding or damage, thereby effectively improving production efficiency and ensuring product quality.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The present application utilizes the synergistic effect of the bundle block, the first slider, the wedge block, the linkage member and the elastic member on the movable mold and the fixed mold to realize the automation and continuity of the demoulding process, solves the problem of the difficulty in demoulding of plastic products with multiple undercut structures, effectively realizes the separation of multiple undercuts, and improves the demoulding efficiency; and can achieve the effect of improving production efficiency, reducing costs and ensuring product quality, with significant technical advantages and economic benefits;

[0034] 2. This application realizes efficient demoulding of plastic products with multiple undercut structures through the complex structure and coordinated movement of linkage parts. The synergy between various parts makes the demoulding process more stable and reliable, which can ensure the demoulding quality of the product and the stability of production, and realizes the automation and continuity of demoulding, reduces manual intervention, and improves production efficiency;

[0035] 3. The injection mold of the present application utilizes the above-mentioned demoulding mechanism to realize the inner and outer side undercut demoulding of the product. No matter how complex the shape and structure of the product are, it can be completely demoulded to ensure the shape integrity and accuracy of the product; the linkage design of the demoulding mechanism can make the entire demoulding process smoother and more stable. The smooth linkage and comprehensive demoulding capability of the demoulding mechanism during the demoulding process can effectively improve production efficiency and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the demoulding mechanism of an embodiment of the present application.

[0037] Figure 2 It is a cross-sectional view used to show the demoulding mechanism.

[0038] Figure 3 It is a cross-sectional view for showing the angles of the first slider, the second slider and the upper inclined surface of the bundle block.

[0039] Figure 4 It is a cross-sectional view used to show the first slider, wedge block, bundle block and linkage member.

[0040] Explanation of the reference numerals in the accompanying drawings: 1. fixed mold; 11. product; 111. undercut; 12. cavity; 13. movable groove; 2. first slider; 3. wedge block; 4. elastic member; 41. driving screw; 42. driving spring; 5. linkage member; 51. second slider; 511. first inclined surface; 512. mounting groove; 52. third slider; 521. second inclined surface; 522. third inclined surface; 6. bundle block; 61. first limiting inclined surface; 62. second limiting inclined surface; 7. first mortise and tenon structure; 8. second mortise and tenon structure; 9. auxiliary spring; 10. inclined top assembly. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-4 This application is described in further detail.

[0042] Reference Figure 1 and Figure 2 The present application embodiment discloses a demoulding mechanism for separating a mold from a product 11. The mold includes a movable mold and a fixed mold 1. In this embodiment, the movable mold is Figure 2 In the middle dotted frame, a cavity 12 for molding the product 11 is provided between the movable mold and the fixed mold 1. In this embodiment, the fixed mold 1 includes a mold core, and the cavity 12 is provided on the mold core;

[0043] The demoulding mechanism includes: a first slider 2 and a wedge block 3, the first slider 2 and the wedge block 3 are arranged on the fixed mold 1, the first slider 2 and the wedge block 3 are arranged on both sides of the cavity 12 to form the side wall of the cavity 12, and the first slider 2 and the wedge block 3 have a structure corresponding to the undercut 111 of the product 11;

[0044] An elastic member 4, which is disposed on the fixed mold 1 and connected to the first sliding block 2;

[0045] A linkage member 5, the linkage member 5 connects the first slider 2 and the wedge block 3;

[0046] A bundle block 6, one end of which is fixed on the movable mold, and the other end of which is passed through the fixed mold 1 and the first slider 2, and the bundle block 6 abuts against the first slider 2 and the linkage member 5;

[0047] When the mold is opened, the movable mold moves to drive the bundle block 6 to move, and the bundle block 6 releases the restriction on the first slider 2 and the linkage member 5. The elastic member 4 pulls the first slider 2 to move, and the first slider 2 is separated from the undercut 111 of the product 11. At the same time, the first slider 2 drives the linkage member 5 to move, and the linkage member 5 drives the wedge block 3 to move, and the wedge block 3 is separated from the undercut 111 of the product 11. In this embodiment, the movable mold and the bundle block 6 move in the vertical direction and the moving directions of the movable mold and the bundle block 6 are the same, and the first slider 2 and the wedge block 3 move in the horizontal direction and the moving directions of the first slider 2 and the wedge block 3 are opposite.

[0048] The demoulding mechanism of the present application is mainly designed by the coordinated action of the bundle block 6, the first slider 2, the wedge block 3, the linkage member 5 and the elastic member 4 on the movable mold and the fixed mold 1, which can realize the automation and continuity of the demoulding process, solve the problem of the difficulty of demoulding the plastic product with multiple undercut structures, and effectively realize the separation of multiple undercuts 111 through the design of a reasonable demoulding mechanism, thereby improving the demoulding efficiency;

[0049] During the injection molding process, the injection plastic is injected into the cavity 12 of the product 11, the injection plastic fills the cavity 12 and forms a corresponding undercut 111 of the product 11 on the first slider 2 and the wedge block 3, and then cools to form a molded product 11; when the injection molding is completed and the mold needs to be opened, the movable mold is driven to move upward, and the movable mold will drive the bundle block 6 to move together. The moved bundle block 6 will release the restriction on the first slider 2 and the linkage member 5. The elastic member 4 plays a role at this time, pulling the first slider 2 to move. Due to the design of the demoulding mechanism, the first slider 2 and the undercut 111 of the product 11 are separated. ; At the same time, the movement of the first slider 2 also drives the movement of the linkage member 5, and the linkage member 5 further drives the movement of the wedge block 3. The movement of the wedge block 3 eventually causes the wedge block 3 to be separated from the undercut 111 of the product 11, completing the entire demolding process; during the demolding process, the structure of the elastic member 4 and the linkage member 5 makes the demolding process more stable and controllable, reduces the need for manual intervention and operation, and improves the stability and consistency of production, thereby achieving the effect of improving production efficiency, reducing costs and ensuring the quality of product 11, and has significant technical advantages and economic benefits.

[0050] Reference Figure 3 and Figure 4 The linkage member 5 includes a second slider 51 and a third slider 52. The second slider 51 is fixedly connected to the first slider 2. In this embodiment, the first slider 2 and the second slider 51 are horizontally arranged. The moving direction of the second slider 51 is the same as that of the first slider 2. The second slider 51 is slidably connected to the third slider 52. In this embodiment, the third slider 52 is vertically arranged. The third slider 52 is slidably connected to the wedge block 3. One end of the bundle block 6 that passes through the first slider 2 abuts against the second slider 51. The moving direction of the second slider 51 is the same as that of the first slider 2. The moving direction of the second slider 51 is perpendicular to that of the third slider 52. The moving direction of the wedge block 3 is opposite to that of the first slider 2 and perpendicular to that of the third slider 52.

[0051] The second slider 51 is slidably connected to the third slider 52 via the first mortise and tenon structure 7, and the third slider 52 is slidably connected to the wedge block 3 via the second mortise and tenon structure 8. Through the design of these two mortise and tenon structures, a stable sliding connection is established between the second slider 51, the third slider 52 and the wedge block 3, so that they can move in coordination, allowing relative sliding between the two, completing specific mechanical functions, and providing reliable connection and fixation;

[0052] The bundle block 6 is provided with a first limiting bevel 61 and a second limiting bevel 62, the first limiting bevel 61 abuts against the inner wall of the first slider 2, and the second limiting bevel 62 abuts against the outer wall of the second slider 51; in the present embodiment, the angles between the first limiting bevel 61 and the second limiting bevel 62 and the vertical direction are set to a and b respectively, and the angle range of a and b is 5°-25°; in the mold closing stage, the first limiting bevel 61 abuts against the inner wall of the first slider 2, and the second limiting bevel 62 abuts against the outer wall of the second slider 51, and the first limiting bevel 61 and the second limiting bevel 62 form a backhoe structure, so that the bundle block 6 can limit the movement of the first slider 2 and the second slider 51, ensuring that they are in the correct position and accurately aligned when the mold is closed; the setting angle of the first limiting bevel 61 and the second limiting bevel 62 is between 5°-25°, so that the bundle block 6 can move smoothly in the mold opening stage without getting stuck or blocked, thereby improving the reliability and stability of the mold;

[0053] The second slider 51 is provided with a first inclined surface 511, and the third slider 52 moves along the first inclined surface 511. In this embodiment, the angle between the first inclined surface 511 and the horizontal direction is set to c, and the angle range of c is 5°-25°; during demoulding, when the second slider 51 moves backward, the third slider 52 moves relatively downward along the first inclined surface 511 on the second slider 51. In this process, through the setting of the first inclined surface 511, the second slider 51 can accurately guide the moving direction and trajectory of the third slider 52 to ensure the position accuracy and repeatability required in the manufacturing process; the inclination angle of the first inclined surface 511 is between 5°-25°, which can reduce the friction and resistance of the third slider 52 on the contact surface with the second slider 51 when the third slider 52 moves along the inclined surface, and can prevent it from being stuck or blocked;

[0054] The third slider 52 is provided with a second inclined surface 521, and the wedge block 3 is in contact with the second inclined surface 521 and moves along the second inclined surface 521. In this embodiment, the angle between the second inclined surface 521 and the vertical direction is set to d, and the angle range of d is 5°-25°; during demoulding, when the third slider 52 moves downward, the wedge block 3 is guided by the second inclined surface 521, moves relatively forward in the direction away from the undercut 111 of the product 11, and separates from the undercut 111 of the product 11 to achieve the release work; through the setting of the second inclined surface 521, the wedge block 3 moves along the inclined surface, and the wedge block 3 and the product 11 are smoothly connected and separated, thereby improving the production efficiency and the quality of the product 11. The setting of the second inclined surface 521 at 5°-25° can prevent the occurrence of the stuck phenomenon, improve the stability of the release work, and reduce the adverse effects caused by friction or resistance;

[0055] The third slider 52 is further provided with a third inclined surface 522, which contacts and fits with the inner wall of the fixed mold 1. In this embodiment, the angle between the third inclined surface 522 and the vertical direction is set to e, and the angle range of e is 0°-15°; the third inclined surface 522 contacts with the inner wall of the fixed mold 1 to form a backhoe structure, so that the third slider 52 can be stably held on the wedge block 3, thereby ensuring the stability and accuracy of the operation process; and the third inclined surface 522 is set at 0°-15°, which effectively prevents the occurrence of the jamming phenomenon and ensures the reliability and stability of the third slider 52 in long-term operation;

[0056] During demoulding, the movement of the movable mold drives the bundle block 6 to move upward in the vertical direction. The movement of the bundle block 6 will release the abutment and restriction of the first limiting slope 61 and the second limiting slope 62 on the bundle block 6 on the first slider 2 and the second slider 51. At this time, the elastic member 4 plays a role, pulling the first slider 2 to move backward toward the side away from the undercut 111 of the product 11, that is, the first slider 2 moves rightward in the horizontal direction, so that the first slider 2 and the undercut 111 of the product 11 are separated;

[0057] At the same time, since the second slider 51 is fixedly connected to the first slider 2, the second slider 51 will also move backwards. The movement of the second slider 51 causes the third slider 52 to move downward in the vertical direction. During this process, the third slider 52 will slide downward along the first inclined surface 511 of the second slider 51. The first mortise and tenon structure 7 ensures that the third slider 52 is stably connected to the second slider 51 during the movement. The movement of the third slider 52 drives the wedge block 3 to move forward relative to the side away from the undercut 111 of the other product 11, that is, the wedge block 3 moves to the left in the horizontal direction. During this process, the wedge block 3 will slide downward along the second inclined surface 521 of the third slider 52. The second mortise and tenon structure 8 ensures that the third slider 52 is stably connected to the wedge block 3 during the movement. After the wedge block 3 moves, the wedge block 3 is separated from the undercut 111 of the product 11, completing the release work.

[0058] Through the complex structure and coordinated movement of the linkage part 5, efficient demoulding of the plastic product with multiple undercut structures is achieved. The synergy between the various components makes the demoulding process more stable and reliable, which can ensure the demoulding quality and production stability of the product 11, and realize the automation and continuity of demoulding, reduce manual intervention, and improve production efficiency.

[0059] Reference Figure 4The fixed mold 1 is provided with a movable groove 13, and the elastic member 4 includes a driving screw 41 and a driving spring 42 arranged in the movable groove 13. In this embodiment, the driving screw 41 and the driving spring 42 are both arranged horizontally, one end of the driving screw 41 passes through the movable groove 13 and is connected to the first slider 2, the driving screw 41 slides in the movable groove 13, and the driving spring 42 is sleeved on the driving screw 41, one end of the driving spring 42 is in conflict with the driving screw 41, and the other end is in conflict with the groove wall of the movable groove 13;

[0060] When the movable mold moves, the bundle block 6 releases the restriction on the first slider 2. At this time, the driving spring 42 will stretch, thereby driving the driving screw 41 to move backward. The movement of the driving screw 41 will pull the first slider 2 to move backward toward the side away from the undercut 111 of the product 11; through the design of the driving screw 41 and the driving spring 42, the first slider 2 can be accurately controlled, so that the release and reset movement of the first slider 2 are smooth and reliable, and the configuration of the driving screw 41 and the driving spring 42 is simple, thereby reducing the number and complexity of mechanical components.

[0061] Reference Figure 4 The demoulding mechanism further includes an auxiliary spring 9. In this embodiment, the auxiliary spring 9 is horizontally arranged. A mounting groove 512 is arranged on the side of the second slider 51 away from the bundle block 6. The auxiliary spring 9 is arranged in the mounting groove 512. One end of the auxiliary spring 9 abuts against the inner wall of the fixed mold 1, and the other end abuts against the bottom wall of the mounting groove 512.

[0062] When the mold is opened, the bundle block 6 will release the restriction on the first slider 2 and the second slider 51. At this time, the elastic member 4 will pull the first slider 2 to move backward to the side away from the undercut 111 of the product 11. Since the first slider 2 is fixedly connected to the second slider 51, the movement of the first slider 2 will drive the second slider 51 to move together. During this process, the auxiliary spring 9 will assist in promoting the movement of the second slider 51. The existence of the auxiliary spring 9 increases the stability of the second slider 51 during movement, ensures the smooth movement of the second slider 51, improves the demolding efficiency, and helps to improve the production efficiency and the service life of the mold.

[0063] The demoulding mechanism also includes a tilted ejector assembly 10, which is inserted into the fixed mold 1. In the present embodiment, the tilted ejector assembly includes two tilted ejector rods and a driving member. The driving member may be, but is not limited to, a hydraulic cylinder. The top surface of the tilted ejector assembly 10 and the bottom surface of the cavity 12 are on the same horizontal plane. The tilted ejector assembly 10 is used to drive the product 11 to be ejected and separated from the fixed mold 1. After the demoulding work is completed, the tilted ejector assembly 10 is driven to move upward. Specifically, the hydraulic cylinder is started, and the cylinder rod of the hydraulic cylinder extends to push the tilted ejector rod to move upward. The two tilted ejector rods push the product 11 to be ejected from the cavity 12, so that the product 11 is ejected from the fixed mold 1, and the product 11 is separated from the mold. The tilted ejector assembly has high stability and reliability, so that the product 11 can be quickly and smoothly removed from the mold, thereby improving production efficiency, and can reduce damage or deformation to the product 11, thereby improving the quality of the product 11.

[0064] The present application also provides an injection mold having a demoulding mechanism as described above; the injection mold utilizes the above demoulding mechanism to realize the demoulding work of the inner and outer side undercuts 111 of the product 11, and no matter how complex the shape and structure of the product 11 are, it can be completely demoulded to ensure the shape integrity and accuracy of the product 11; the linkage design of the demoulding mechanism can make the entire demoulding process smoother and more stable, and the smooth linkage and comprehensive demoulding ability of the demoulding mechanism during the demoulding process enable the product 11 to be completely and accurately demoulded from the mold, avoiding quality problems of the product 11 caused by incomplete demoulding or damage, thereby effectively improving production efficiency and ensuring the quality of the product 11.

[0065] The working process of the embodiment of the present application is as follows: during the injection molding operation, the injection plastic is injected into the mold cavity 12 of the product 11, the injection plastic fills the mold cavity 12 and forms a corresponding undercut 111 of the product 11 on the first slider 2 and the wedge block 3, and then cooled to form a molded product 11;

[0066] When the mold needs to be opened after the injection molding is completed, the movement of the movable mold drives the bundle block 6 to move upward in the vertical direction. The movement of the bundle block 6 will release the abutment and restriction of the first limiting slope 61 and the second limiting slope 62 on the bundle block 6 on the first slider 2 and the second slider 51. The elastic member 4 plays a role at this time, and the driving spring 42 will stretch, thereby driving the driving screw 41 to move backward. The movement of the driving screw 41 will pull the first slider 2 to move backward toward the side away from the undercut 111 of the product 11, that is, the first slider 2 moves rightward in the horizontal direction, so that the first slider 2 and the undercut 111 of the product 11 are separated;

[0067] At the same time, since the second slider 51 is fixedly connected to the first slider 2, the second slider 51 will also move backwards. During this process, the auxiliary spring 9 will assist in pushing the second slider 51 to move rightward in the horizontal direction. The movement of the second slider 51 causes the third slider 52 to move downward in the vertical direction relatively. During this process, the third slider 52 will slide downward along the first inclined surface 511 of the second slider 51. The first mortise and tenon structure 7 ensures that the third slider 52 and the second slider 51 are still stably connected during the movement. The movement of the third slider 52 drives the wedge block 3 to move forward relative to the side away from the undercut 111 of the other product 11, that is, the wedge block 3 moves leftward in the horizontal direction. During this process, the wedge block 3 will slide downward along the second inclined surface 521 of the third slider 52. The second mortise and tenon structure 8 ensures that the third slider 52 and the wedge block 3 are still stably connected during the movement. After the wedge block 3 moves, the wedge block 3 is separated from the undercut 111 of the product 11, completing the release work.

[0068] After the release work is completed, the inclined ejector mechanism is driven to move upward. Specifically, the hydraulic cylinder is started, and the cylinder rod of the hydraulic cylinder extends to push the inclined ejector rod to move upward. The two inclined ejector rods push the product 11 out of the cavity 12, so that the product 11 is ejected from the fixed mold 1, thereby realizing the separation of the product 11 from the mold.

[0069] 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, used for separating a mold from a product (11), wherein the mold comprises a movable mold and a fixed mold (1), and a cavity (12) for molding the product is provided between the movable mold and the fixed mold (1); characterized in that: The demoulding mechanism comprises: A first slider (2) and a wedge block (3), wherein the first slider (2) and the wedge block (3) are arranged on both sides of the cavity (12) to form a side wall of the cavity (12), and the first slider (2) and the wedge block (3) have a structure corresponding to the undercut (111) of the product (11); An elastic member (4), the elastic member (4) being arranged on the fixed mold (1) and connected to the first sliding block (2); A linkage member (5), wherein the linkage member (5) connects the first slider (2) and the wedge block (3); A bundle block (6), one end of which is fixed on the movable mold, and the other end of which is passed through the fixed mold (1) and passes through the first slider (2), and the bundle block (6) abuts against the first slider (2) and the linkage member (5); When the mold is opened, the movable mold moves to drive the bundle block (6) to move, the bundle block (6) releases the restriction on the first slider (2) and the linkage member (5), the elastic member (4) pulls the first slider (2) to move, the first slider (2) is separated from the undercut (111) of the product (11), and at the same time, the first slider (2) drives the linkage member (5) to move, the linkage member (5) drives the wedge block (3) to move, and the wedge block (3) is separated from the undercut (111) of the product (11).

2. The demoulding mechanism according to claim 1, characterized in that: The linkage member (5) comprises a second slider (51) and a third slider (52); the second slider (51) is fixedly connected to the first slider (2); the second slider (51) is slidably connected to the third slider (52); the third slider (52) is slidably connected to the wedge block (3); one end of the bundle block (6) passing through the first slider (2) is abutted against the second slider (51); the moving direction of the second slider (51) is the same as the moving direction of the first slider (2); the moving direction of the second slider (51) is perpendicular to the moving direction of the third slider (52); the moving direction of the wedge block (3) is opposite to the moving direction of the first slider (2) and perpendicular to the moving direction of the third slider (52).

3. The demoulding mechanism according to claim 2, characterized in that: The bundle block (6) is provided with a first limiting inclined surface (61) and a second limiting inclined surface (62); the first limiting inclined surface (61) abuts against the inner wall of the first sliding block (2), and the second limiting inclined surface (62) abuts against the outer wall of the second sliding block (51); the first limiting inclined surface (61) and the second limiting inclined surface (62) are arranged at an angle of 5°-25° with respect to the vertical direction.

4. The demoulding mechanism according to claim 2, characterized in that: The second sliding block (51) and the third sliding block (52) are slidably connected via a first mortise and tenon structure (7); the second sliding block (51) is provided with a first inclined surface (511), and the third sliding block (52) moves along the first inclined surface (511), and the first inclined surface (511) is arranged at an angle of 5°-25° with respect to the horizontal direction.

5. The demoulding mechanism according to claim 2, characterized in that: The third sliding block (52) is slidably connected to the wedge block (3) via a second mortise and tenon structure (8); the third sliding block (52) is provided with a second inclined surface (521), the wedge block (3) abuts against the second inclined surface (521) and moves along the second inclined surface (521), and the second inclined surface (521) is arranged at an angle of 5°-25° with respect to the vertical direction.

6. The demoulding mechanism according to claim 5, characterized in that: The third sliding block (52) is further provided with a third inclined surface (522), the third inclined surface (522) is in contact with and fits against the inner wall of the fixed mold (1), and the third inclined surface (522) is arranged at an angle of 0°-15° with respect to the vertical direction.

7. The demoulding mechanism according to claim 2, characterized in that: It also includes an auxiliary spring (9), a mounting groove (512) is provided on the side of the second sliding block (51) away from the bundle block (6), the auxiliary spring (9) is arranged in the mounting groove (512), one end of the auxiliary spring (9) is in contact with the inner wall of the fixed mold (1), and the other end is in contact with the bottom wall of the mounting groove (512).

8. The demoulding mechanism according to claim 1, characterized in that: The fixed mold (1) is provided with a movable groove (13), and the elastic member (4) comprises a driving screw (41) and a driving spring (42) which are arranged in the movable groove (13). One end of the driving screw (41) passes through the movable groove (13) and is connected to the first sliding block (2). The driving screw (41) slides in the movable groove (13). The driving spring (42) is sleeved on the driving screw (41). One end of the driving spring (42) contacts the driving screw (41), and the other end contacts the groove wall of the movable groove (13).

9. The demoulding mechanism according to claim 1, characterized in that: It also includes a tilted ejector assembly (10), which is inserted into the fixed mold (1), and the top surface of the tilted ejector assembly (10) is on the same horizontal plane as the bottom surface of the cavity (12). The tilted ejector assembly (10) is used to drive the product (11) to be ejected and separated from the fixed mold (1).

10. An injection mold, characterized in that: It comprises a demoulding mechanism as described in any one of claims 1 to 9.

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