Demolding mechanism with auxiliary sliding structure and injection mold

Abstract

The utility model relates to a demolding mechanism with an auxiliary sliding structure and an injection mold, and relates to the technical field of molds, the demolding mechanism comprises a sliding block used for product forming, and the sliding block is provided with a moving space; the multiple angle pins penetrate through the sliding block and are in sliding connection with the sliding block, one end of each angle pin is used for forming the inverted buckle of the product, and the other end of each angle pin extends into the moving space; the sliding sleeves are in one-to-one correspondence with the angle pins, the sliding sleeves are arranged in the moving space and connected with the angle pins, the sliding sleeves are arranged along the peripheral sides of the angle pins, and the angle pins slide in the moving space through the sliding sleeves; and the stroke control piece is arranged in the sliding block, and part of the stroke control piece is located in the moving space and abuts against the multiple sliding sleeves. By additionally arranging the auxiliary sliding structure, the angle pin slides through the sliding sleeve, and the sliding sleeve can disperse the friction force of the angle pin and reduce the direct abrasion of the angle pin, so that the abrasion of the angle pin is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the field of die technology, and more particularly to a demoulding mechanism with an auxiliary sliding structure and an injection mould. Background Art

[0002] Injection moulding is an efficient and precise manufacturing process. By injecting molten plastic material into a mould, the material solidifies and takes shape after cooling, forming an injection-moulded part that is consistent with the shape inside the mould. This process is widely used in the mass production of complex products and has the advantages of short production cycles, high efficiency, and high repeat accuracy.

[0003] In the design process of injection-moulded products, various undercuts and snap fits are inevitably designed. In an injection mould, in order to handle the lateral core pulling, lateral parting, and resetting actions of the product, a lifter pin mechanism is usually used. The lifter pin mechanism is a common design solution, and the lateral separation of the mould or the extraction of complex product undercuts is achieved through the sliding movement of the lifter pin. However, since a large frictional area is formed during the movement of the lifter pin, this will lead to increased wear. The uneven force and wear problems of the lifter pin mainly stem from its own inclined design and movement characteristics. Coupled with the lack of a structure for supporting the lifter pin, the service life of the lifter pin is often shortened. Such wear and strength reduction not only affect the working efficiency of the mould but also increase the maintenance and replacement costs. Summary of the Utility Model

[0004] In order to reduce the wear of the lifter pin during the demoulding movement, the present application provides a demoulding mechanism with an auxiliary sliding structure and an injection mould.

[0005] The demoulding mechanism with an auxiliary sliding structure and the injection mould provided by the present application adopt the following technical solutions:

[0006] A demoulding mechanism with an auxiliary sliding structure, comprising:

[0007] A slider for product forming, the slider being provided with a moving space;

[0008] A plurality of lifter pins, penetrating through the slider and slidably connected to the slider, one end of the lifter pin being used for forming the product undercut, and the other end extending into the moving space;

[0009] A plurality of sliding sleeves, corresponding to the lifter pins one by one, the sliding sleeves being arranged in the moving space and connected to the lifter pins, the sliding sleeves being arranged along the circumferential side of the lifter pin, and the lifter pin sliding in the moving space through the sliding sleeve;

[0010] A stroke control member is provided inside the slider and partially located within the moving space; during injection molding, the stroke control member abuts against a plurality of the sliding sleeves; during mold opening, the sliding sleeves move and the abutting relationship with the stroke control member is released.

[0011] By adopting the above technical solution, during mold opening, the slider is driven to move away from the product and separate from the product. During the movement of the slider, the angled pin slides within the moving space through the sliding sleeve, assisting the angled pin to separate from the undercut portion; the stroke control member is arranged in the moving space inside the slider and maintains an abutting relationship with the sliding sleeve during injection molding. During the mold opening process, when the sliding sleeve moves to a position where the abutting relationship with the stroke control member is released, the acting force of the stroke control member will be released. At this time, the slider will drive the sliding sleeve to move, thereby driving the angled pin to move further and separating it from the product; this application reduces the wear of the angled pin by adding an auxiliary sliding structure, which can extend the service life of the angled pin. This demolding mechanism can significantly extend the service life of the mold. Since the angled pin slides within the moving space through the sliding sleeve, the sliding sleeve effectively disperses the frictional force of the angled pin, reducing the direct wear between the angled pin and the slider, thereby reducing the wear of the angled pin and increasing its service life; and by using the design of the stroke control member, it is ensured that the slider and the sliding sleeve can move according to the set stroke during the mold opening process, avoiding excessive displacement or inaccurate position of the angled pin, thereby improving the opening and closing accuracy and reliability of the mold.

[0012] In a specific feasible embodiment, the stroke control member includes a column, the column penetrates through the slider, and a limit block is provided on the column. The limit block extends into the moving space and abuts against a plurality of the sliding sleeves.

[0013] By adopting the above technical solution, when the mold starts to open, the angled pin moves within the moving space through the sliding sleeve. Due to the contact between the limit block and the sliding sleeve, the sliding sleeve will be guided to move smoothly along the limit block. This guiding effect enables the angled pin to accurately separate from the undercut portion of the mold, preventing the angled pin from shifting or jamming during the mold opening process, reducing wear, and extending the service life of the angled pin.

[0014] In a specific feasible embodiment, the limit block is provided with a control surface, the width of the control surface is set as A, the contact width between the sliding sleeve and the control member is set as B, and B / A is 1 / 3 - 1 / 2.

[0015] By adopting the above technical solution, using the above parameter design helps to improve the stability of the sliding sleeve, reducing offset and wobbling during movement; and the appropriate contact width ratio balances the frictional force, avoiding excessive frictional resistance caused by too large a friction or instability caused by too small a friction, thereby reducing the wear between the sliding sleeve and the limit block, extending the service life of the component, and reducing the maintenance cost.

[0016] In a specific feasible implementation, the sliding sleeve includes an inclined portion and a mating convex portion. The mating convex portion abuts against the limiting block, and the oblique pin passes through the inclined portion and is connected to the inclined portion.

[0017] By adopting the above technical solution, through the design of the inclined portion and the mating convex portion, the sliding sleeve can accurately dock with the limiting block, improving the assembly accuracy and stability; the contact between the mating convex portion and the limiting block reduces extra friction, decreases wear, and extends the service life of the components.

[0018] In a specific feasible implementation, the inclination direction of the inclined portion is the same as that of the oblique pin.

[0019] By adopting the above technical solution, with the design of the consistent inclination direction, it helps with accurate centering, enhances the fit between components, and improves the overall assembly stability; also, the design of the same inclination direction can reduce the impact between the oblique pin and the inclined portion during movement, decrease wear, and extend the service life of the components.

[0020] In a specific feasible implementation, the slider is provided with a bearing surface, and the distance from the inclined portion to the bearing surface is less than the distance from the limiting block to the bearing surface.

[0021] By adopting the above technical solution, during mold opening, the slider is driven to move away from the product. When the bearing surface of the slider contacts the inclined portion, the slider pushes the sliding sleeve and the oblique pin to move away from the product side; once the bearing surface contacts the limiting block, the movement of the slider stops, and at the same time, the sliding sleeve and the oblique pin also stop. At this time, the oblique pin is completely separated from the product; through the above design to control the movement of the slider, it ensures the complete separation of the oblique pin from the product, avoids unnecessary contact, and the accurate stop mechanism reduces the friction and wear of the moving parts, extending the service life of the components.

[0022] In a specific feasible implementation, the oblique pin and the inclined portion are connected and fixed through a mortise and tenon structure.

[0023] By adopting the above technical solution, with the design of the mortise and tenon structure, it provides reliable mechanical locking, ensuring the stable connection between the oblique pin and the inclined portion and preventing loosening; and this structure is easy to assemble and disassemble, without the need for additional fixing devices, simplifying the maintenance process.

[0024] In a specific feasible implementation, it further includes a pressing plate. The pressing plate presses and fixes the oblique pin and the sliding sleeve in the moving space, and the oblique pin and the sliding sleeve slide between the pressing plate and the slider.

[0025] By adopting the above technical solution, the angled pin and the sliding sleeve are fixed in the moving space through crimping by the pressing plate, which can prevent them from shifting or falling off during operation; the angled pin and the sliding sleeve slide between the pressing plate and the slider, allowing them to move smoothly on a predetermined path, thereby reducing friction and improving the accuracy of operation, and enhancing the stability and reliability of the movement.

[0026] In a specific feasible embodiment, it further includes a driving member and a bundling block. The bundling block is arranged on the side of the slider away from the product and abuts against the slider; the driving member is arranged on the side of the slider away from the product and is connected to the slider; when the mold is opened, the bundling block moves and releases the restriction on the slider. After the bundling block releases the restriction, the driving member drives the slider to move.

[0027] By adopting the above technical solution, when the mold is opened, the movement of the bundling block will release the restriction on the slider, enabling the slider to move freely. After that, the driving member will take over the movement of the slider and drive the slider in a predetermined direction and manner to achieve the mold opening operation; with the above configuration, the system can effectively control the movement of the slider, ensure precise operation during mold opening, and improve the overall efficiency and reliability of the system.

[0028] An injection mold includes a demolding mechanism with an auxiliary sliding structure as described above.

[0029] By adopting the above technical solution, the demolding mechanism of the present application designs an auxiliary sliding structure to provide additional support, preventing the injection mold from shifting or deforming during operation, thereby increasing the service life and stability of the injection mold; by controlling the demolding process, reducing the damage to the product during demolding, improving the overall quality and consistency of the product, and ensuring the rapid and smooth demolding of the molded product; the injection mold of the present application can handle molded products with various complex shapes, expanding the application range of the injection mold.

[0030] In summary, the beneficial technical effects of the present application: The present application reduces the wear of the angled pin by adding an auxiliary sliding structure. Since the angled pin slides in the moving space through the sliding sleeve, the sliding sleeve effectively disperses the frictional force of the angled pin, reducing the direct wear between the angled pin and the slider, thereby reducing the wear of the angled pin and increasing its service life; and by using the design of the stroke control member, it is ensured that the slider and the sliding sleeve can move according to the set stroke during mold opening, avoiding excessive displacement or inaccurate position of the angled pin, thereby improving the opening and closing accuracy and reliability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the demolding mechanism and the injection mold of the embodiment of the present application.

[0032] Figure 2 It is a schematic structural diagram for showing the demolding mechanism.

[0033] Figure 3 It is an enlarged view for showing the sliding sleeve, the inclined pin and the stroke control member.

[0034] Figure 4 It is a cross-sectional view for showing the mortise and tenon structure.

[0035] Figure 5 It is a schematic structural view for showing the beam block, the driving member and the lifter rod.

[0036] Explanation of reference numerals: 1, injection mold; 11, upper mold; 12, lower mold; 13, mold core; 2, product; 3, demolding mechanism; 31, driving member; 32, beam block; 33, lifter rod; 4, slider; 41, moving space; 42, abutting surface; 5, inclined pin; 6, sliding sleeve; 61, inclined portion; 62, mating convex portion; 7, stroke control member; 71, column; 72, limiting block; 73, control surface; 8, mortise and tenon structure; 9, pressing plate. Detailed implementation manners

[0037] The following further describes the present application in detail Figures 1-5 with reference to the appended drawings.

[0038] Refer to Figure 1 and Figure 2 , an embodiment of the present application discloses a demolding mechanism with an auxiliary sliding structure for separating the injection mold 1 from the product 2. In this embodiment, the injection mold 1 includes an upper mold 11 and a lower mold 12, and a mold core 13 for forming the product 2 is embedded in the lower mold 12;

[0039] The demolding mechanism 3 is arranged on the lower mold 12, and the demolding mechanism 3 includes:

[0040] A slider 4, a part of the structure of the slider 4 is located in the mold core 13 and is used together with the mold core 13 for forming the product 2 and its undercuts. A moving space 41 is provided in the slider 4. In this embodiment, the slider 4 moves along the x direction;

[0041] A plurality of inclined pins 5, penetrating through the slider 4 and slidably connected to the slider 4. One end of the inclined pin 5 is used for forming the undercuts of the product 2, and the other end extends into the moving space 41. In this embodiment, two inclined pins 5 are provided, and the two inclined pins 5 are both inclined and symmetrically arranged on the slider 4. The two inclined pins 5 penetrate through the slider 4 and are slidably connected to the slider 4;

[0042] A plurality of sliding sleeves 6, corresponding to the inclined pins 5 one by one. The sliding sleeves 6 are arranged in the moving space 41 and are connected to the inclined pins 5. In this embodiment, two sliding sleeves 6 are provided, and the two sliding sleeves 6 are both inclined and symmetrically arranged in the moving space 41. The sliding sleeves 6 are arranged along the circumferential side of the inclined pins 5, and the inclined pins 5 slide in the moving space 41 through the sliding sleeves 6;

[0043] The stroke control member 7 is disposed within the slider 4 and partially located within the moving space 41. The stroke control member 7 is used to control the moving trajectory of the sliding sleeve 6. In this embodiment, during the movement of the sliding sleeve 6 and the angled pin 5, the sliding sleeve 6 and the angled pin 5 first move in opposite directions along the y direction, that is, move away from the undercut, so that the angled pin 5 is separated from the undercut. When the movement reaches the position where the stroke control member 7 releases the restriction on the sliding sleeve 6, the sliding sleeve 6 and the angled pin 5 then move along the x direction following the slider 4, so that the angled pin 5 is separated from the product 2. In this embodiment, both the x direction and the y direction are horizontal directions, and the x direction is perpendicular to the y direction.

[0044] During the injection molding process, the slider 4 and the angled pin 5 are in a relatively fixed position. The slider 4 is used to process part of the molding of the product 2 together with the mold core 13. The stroke control member 7 is in contact with multiple sliding sleeves 6, so that the positions of the angled pin 5 and the sliding sleeve 6 are relatively fixed. One end of the angled pin 5 is responsible for processing the undercut part of the product 2.

[0045] When opening the mold, the upper mold 11 is driven to move along the vertical z direction and move away, releasing the contact relationship with the lower mold 12, and then the slider 4 is driven to move along the x direction away from the product 2, separating from the product 2. During this process, due to the inclined design of the angled pin 5 itself and the movement restriction of the slider 4, the angled pin 5 and the sliding sleeve 6 will first move along the y direction toward the side away from the undercut of the product 1 to separate from the undercut angled pin 5. During the movement of the slider 4, the angled pin 5 slides within the moving space 41 through the sliding sleeve 6. When the sliding sleeve 6 moves to the position where it releases the contact relationship with the stroke control member 7, the acting force of the stroke control member 7 will be released. At this time, the slider 4 will drive the sliding sleeve 6 and the angled pin 5 to move along the x direction together, so that the angled pin 5 is separated from the product 2.

[0046] This application reduces the wear of the angled pin 5 by adding an auxiliary sliding structure, which can extend the service life of the angled pin 5. The demolding mechanism 3 can significantly extend the service life of the mold. Since the angled pin 5 slides within the moving space 41 through the sliding sleeve 6, the sliding sleeve 6 effectively disperses the frictional force of the angled pin 5, reduces the direct wear between the angled pin 5 and the slider 4, thereby reducing the wear of the angled pin 5 and improving its service life. And by using the design of the stroke control member 7, it is ensured that the slider 4 and the sliding sleeve 6 can move according to the set stroke during the mold opening process, avoiding excessive displacement or inaccurate position of the angled pin 5, thereby improving the opening and closing accuracy and reliability of the mold.

[0047] Refer to Figure 2 and Figure 3, the stroke control member 7 includes a column 71 which passes through the slider 4. One end of the column 71 passes through the slider 4 and is fixed to the lower die 12. A limit block 72 is provided at the other end of the column 71. The limit block 72 extends into the moving space 41 and abuts against a plurality of sliding sleeves 6. When the mold starts to open, the angled pin 5 moves in the moving space 41 through the sliding sleeves 6. Due to the contact between the limit block 72 and the sliding sleeves 6, the sliding sleeves 6 will be guided to move smoothly along the limit block 72. This guiding effect enables the angled pin 5 to accurately separate from the undercut part of the mold, preventing the angled pin 5 from shifting or jamming during the mold opening process, reducing wear, and extending the service life of the angled pin 5.

[0048] Refer to Figure 3 and Figure 4 , the sliding sleeve 6 includes an inclined portion 61 and a mating convex portion 62. The mating convex portion 62 abuts against the limit block 72. The angled pin 5 passes through the inclined portion 61 and is connected to the inclined portion 61. The angled pin 5 and the inclined portion 61 are connected and fixed by a mortise and tenon structure 8. With the design of the inclined portion 61 and the mating convex portion 62, the sliding sleeve 6 can accurately dock with the limit block 72, improving the accuracy and stability of the assembly. And by designing the mortise and tenon structure 8 to connect the angled pin 5 and the inclined portion 61, reliable mechanical locking can be provided to ensure the stable connection between the angled pin 5 and the inclined portion 61, preventing loosening. Moreover, this structure is easy to assemble and disassemble without additional fixing devices, simplifying the maintenance process.

[0049] Refer to Figure 3 , the limit block 72 is provided with a control surface 73. The mating convex portion 62 of the sliding sleeve 6 abuts against the control surface 73. The width of the control surface 73 is set as A, and the contact width between the mating convex portion 62 of the sliding sleeve 6 and the control member is set as B. B / A is 1 / 3 - 1 / 2. With this parameter design, it helps to improve the stability of the sliding sleeve 6, reducing offset and wobbling during movement. And the appropriate contact width ratio balances the frictional force, avoiding excessive frictional resistance during movement or instability caused by too little friction, thereby reducing wear between the sliding sleeve 6 and the limit block 72, extending the service life of the assembly, and reducing maintenance costs.

[0050] Refer to Figure 2 and 3 , the inclined direction of the inclined portion 61 is the same as the inclined direction of the angled pin 5. With the design of the consistent inclined direction, it helps with accurate centering, enhancing the fit between components and improving the overall assembly stability. And with the design of the same inclined direction, it can reduce the impact between the angled pin 5 and the inclined portion 61 during movement, reducing wear and extending the service life of the components.

[0051] Refer to Figure 3, the slider 4 is provided with a holding surface 42, and the distance from the inclined portion 61 of the sliding sleeve 6 to the holding surface 42 is less than the distance from the limit block 72 to the holding surface 42. In this embodiment, the distance from the inclined portion 61 of the sliding sleeve 6 to the holding surface 42 is set as S1, and the distance from the limit block 72 to the holding surface 42 is set as S2. S1 includes but is not limited to being 2 mm less than S2; during mold opening, the slider 4 is driven to move away from the product 2. When the holding surface 42 of the slider 4 contacts the inclined portion 61, the slider 4 pushes the sliding sleeve 6 and the angled pin 5 to move away from the product 2; once the holding surface 42 contacts the limit block 72, the movement of the slider 4 stops, and at the same time, the sliding sleeve 6 and the angled pin 5 also stop. At this time, the angled pin 5 is completely separated from the product 2; by the above design, the movement of the slider 4 is controlled to ensure the complete separation of the angled pin 5 from the product 2, avoid unnecessary contact, and the accurate stop mechanism reduces the friction and wear of the moving parts, extending the service life of the parts.

[0052] Refer to Figure 4 and Figure 5 , the demolding mechanism 3 further includes a pressure plate 9. The pressure plate 9 presses and fixes the angled pin 5 and the sliding sleeve 6 within the moving space 41. The angled pin 5 and the sliding sleeve 6 slide between the pressure plate 9 and the slider 4. In this embodiment, the pressure plate 9 includes but is not limited to being connected to the slider 4 by bolts;

[0053] During assembly, one end of the angled pin 5 is connected and fixed to the sliding sleeve 6 through a mortise and tenon structure 8. The other end of the angled pin 5 passes through the slider 4 and is inserted into the mold core 13 for undercut molding. Then, the pressure plate 9 is installed. The pressure plate 9 is connected and fixed to the slider 4 by bolts. The pressure plate 9 will fix the angled pin 5 and the sliding sleeve 6 on the slider 4, completing the installation of the angled pin 5; the use of the pressure plate 9 simplifies the fixing process of the angled pin 5 and the sliding sleeve 6 on the slider 4, improves the assembly efficiency, and also makes subsequent maintenance more convenient, and can prevent them from shifting or falling off during the working process; during mold opening, the angled pin 5 and the sliding sleeve 6 slide between the pressure plate 9 and the slider 4, allowing them to move smoothly on a predetermined path, thereby reducing friction and improving the accuracy of operation, and improving the stability and reliability of the movement.

[0054] Refer to Figure 4 and Figure 5 , the demolding mechanism 3 further includes a driving member 31 and a restraint block 32. The restraint block 32 is provided on the side of the slider 4 away from the product 2 and abuts against the slider 4. In this embodiment, one end of the restraint block 32 is fixed to the upper mold 11, and the other end is inserted into the lower mold 12 to abut against the slider 4;

[0055] The driving member 31 is provided on the side of the slider 4 away from the product 2 and is connected to the slider 4. The driving member 31 is fixedly connected to the slider 4. In this embodiment, the driving member 31 includes but is not limited to a cylinder, a hydraulic cylinder, and an oil cylinder. The driving member 31 is used to drive the slider 4 to move;

[0056] When the injection mold 1 is working, the beam block 32 is fixed at a position to restrict the movement state of the slider 4, ensuring that when the mold injects or presses the product 2, the slider 4 remains stable to ensure the shape and quality of the product 2; when the injection mold 1 needs to be opened to take out the molded product 2, the upper mold 11 moves to drive the beam block 32 to move along the z direction together to release the restriction on the slider 4, so that the slider 4 can move freely. After that, the driving member 31 is activated and drives the slider 4 to move, driving the slider 4 in a predetermined direction and manner to realize the mold opening operation; with the above configuration, the movement state of the slider 4 during the mold opening process of the mold can be effectively managed and controlled, thereby ensuring the smooth progress of the production process, improving the production efficiency and the quality of the product 2, and enabling the system to effectively control the movement of the slider 4, ensuring precise operation during mold opening, and improving the overall efficiency and reliability of the system.

[0057] Referring to Figure 4 and Figure 5 In this embodiment, the demolding mechanism 3 further includes a lifter pin 33. The lifter pin 33 passes through the mold core 13 and contacts the product 2. After both the slider 4 and the lifter pin 5 are separated from the product 2, the product 2 is ejected from the mold core 13 by driving the lifter pin 33 to complete the demolding.

[0058] The implementation principle of the embodiment of the present application is as follows: when the mold needs to be opened to take out the molded product 2, the upper mold 11 moves to drive the beam block 32 to move to release the restriction on the slider 4, and the driving member 31 is activated. The driving member 31 drives the slider 4 to move along the x direction away from the product 2 to separate from the product 2;

[0059] At this time, due to the inclined design of the lifter pin 5 itself and the sliding connection design between the slider 4 and the lifter pin 5, the lifter pin 5 and the sliding sleeve 6 will first move along the y direction away from the undercut, and the lifter pin 5 is separated from the undercut. During the movement of the slider 4, the lifter pin 5 slides in the movement space 41 through the sliding sleeve 6;

[0060] When the sliding sleeve 6 moves to a position where it releases the abutting relationship with the limit block 72, the acting force of the stroke control member 7 will be released, enabling the sliding sleeve 6 to move along the x direction. When the abutting surface 42 of the slider 4 contacts the inclined portion 61 of the sliding sleeve 6, the slider 4 pushes the sliding sleeve 6 to move along the x direction away from the product 2. At this time, the sliding sleeve 6 drives the lifter pin 5 to move along the x direction together. Once the abutting surface 42 contacts the limit block 72, the movement of the slider 4 stops, and at the same time, the sliding sleeve 6 and the lifter pin 5 also stop. At this time, the lifter pin 5 is completely separated from the product 2; after both the slider 4 and the lifter pin 5 are separated from the product 2, the product 2 is ejected from the mold core 13 by driving the lifter pin 33 to complete the complete demolding of the product 2;

[0061] In this application, an auxiliary sliding structure is added to reduce the wear of the lifter pin 5. Since the lifter pin 5 slides within the moving space 41 through the sliding sleeve 6, the sliding sleeve 6 effectively disperses the frictional force of the lifter pin 5, reducing the direct wear between the lifter pin 5 and the slider 4, thereby reducing the wear of the lifter pin 5 and increasing its service life. Additionally, by using the design of the stroke control member 7, it is ensured that the slider 4 and the sliding sleeve 6 can move according to the set stroke during the mold opening process, avoiding excessive displacement or inaccurate positioning of the lifter pin 5, thereby improving the opening and closing accuracy and reliability of the mold.

[0062] The above are all preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A demolding mechanism with an auxiliary sliding structure, characterized in that: Comprising: A slider (4) for forming a product (2), the slider (4) being provided with a moving space (41); A plurality of lifters (5), penetrating through the slider (4) and being slidably connected to the slider (4), one end of the lifter (5) being used for forming an undercut of the product (2), and the other end extending into the moving space (41); A plurality of sliding sleeves (6), corresponding to the lifters (5) one by one, the sliding sleeves (6) being arranged in the moving space (41) and connected to the lifters (5), the sliding sleeves (6) being arranged along the circumferential side of the lifters (5), and the lifters (5) sliding in the moving space (41) through the sliding sleeves (6); A stroke control member (7), arranged in the slider (4) and partially located in the moving space (41); during injection molding, the stroke control member (7) abuts against a plurality of the sliding sleeves (6); during mold opening, the sliding sleeves (6) move and release the abutting relationship with the stroke control member (7).

2. The demolding mechanism with an auxiliary sliding structure according to claim 1, wherein: The stroke control member (7) includes a column (71), the column (71) penetrating through the slider (4), the column (71) being provided with a limiting block (72), and the limiting block (72) extending into the moving space (41) and abutting against a plurality of the sliding sleeves (6).

3. The demolding mechanism with an auxiliary sliding structure according to claim 2, wherein: The limiting block (72) is provided with a control surface (73), the width of the control surface (73) being set as A, the contact width between the sliding sleeve (6) and the control member being set as B, and B / A being 1 / 3 - 1 / 2.

4. The demolding mechanism with an auxiliary sliding structure according to claim 2, characterized in that: The sliding sleeve (6) includes an inclined portion (61) and a mating convex portion (62), the mating convex portion (62) abutting against the limiting block (72), and the lifter (5) penetrating through the inclined portion (61) and being connected to the inclined portion (61).

5. The demolding mechanism with an auxiliary sliding structure according to claim 4, characterized in that: The inclined direction of the inclined portion (61) is the same as the inclined direction of the lifter (5).

6. The demolding mechanism with an auxiliary sliding structure according to claim 4, wherein: The slider (4) is provided with a supporting surface (42), and the distance from the inclined portion (61) to the supporting surface (42) is less than the distance from the limiting block (72) to the supporting surface (42).

7. The demolding mechanism with an auxiliary sliding structure according to claim 4, characterized in that: The lifter (5) and the inclined portion (61) are fixedly connected by a mortise and tenon structure (8).

8. The demolding mechanism with an auxiliary sliding structure according to claim 1, characterized in that: It further includes a pressing plate (9), the pressing plate (9) pressing and fixing the lifter (5) and the sliding sleeve (6) in the moving space (41), and the lifter (5) and the sliding sleeve (6) sliding between the pressing plate (9) and the slider (4).

9. The demolding mechanism with an auxiliary sliding structure according to claim 1, characterized in that: It further includes a driving member (31) and a restraining block (32), the restraining block (32) being arranged on a side of the slider (4) away from the product (2) and abutting against the slider (4); the driving member (31) being arranged on a side of the slider (4) away from the product (2) and connected to the slider (4); during mold opening, the restraining block (32) moves and releases the restriction on the slider (4), and after the restraining block (32) releases the restriction, the driving member (31) drives the slider (4) to move.

10. An injection mold, characterized in that: Comprising a demolding mechanism (3) with an auxiliary sliding structure according to any one of claims 1 - 9.

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