Anti-clamping demolding mechanism and injection mold

Abstract

The utility model relates to the technical field of molds, in particular to an anti-clamping demolding mechanism and an injection mold, and the anti-clamping demolding mechanism comprises a sliding block used for product forming; the fixed seat is arranged in the sliding block and is fixedly arranged; the oblique pins are arranged on the sliding block in a penetrating manner and are in sliding connection with the sliding block, one end of each oblique pin is arranged on the fixed seat and slides on the fixed seat, and the other end of each oblique pin is used for forming an inverted buckle of a product; the angle pin is connected with the fixing base in an abutting mode through the abutting rod assembly, and the fixing base is provided with a concave part and a convex part which correspond to the abutting rod assembly. Through the rolling effect of the abutting rod assembly, the possible clamping stagnation problem of the angle pin in the demolding process is effectively reduced, and the production stability and efficiency are improved; and through the design of the concave part and the abutting rod assembly, the friction resistance in the demolding work is reduced, the moving path of the angle pin can be controlled, it is guaranteed that the angle pin is separated from the inverted buckle firstly and then separated from the product, and therefore the accuracy and reliability of the demolding process are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to an anti-jamming demoulding mechanism and an injection mold. Background Art

[0002] In the design of injection molded products, undercuts are an inevitable requirement due to the complexity of product functions and structures. As a crucial component of the injection mold, the slider mechanism primarily functions to address the undercut structure of the molded product, particularly when the product's primary ejection direction is inconsistent with the undercut structure. With the increasing variety of products produced by injection molds and the prevalence of complex structures, undercuts are increasingly being incorporated into many product designs. These structures require close coordination with the mold to ensure the quality and functionality of the final product.

[0003] With the diversification of market demand, most products currently require complex undercut structures in different ejection directions. Conventional slider mechanisms can only handle undercut structures in the same ejection direction. For products with undercut structures requiring multiple ejection directions, conventional slider mechanisms are unable to achieve product molding and demolding. Furthermore, the existing slider mechanisms typically use a slanted pin structure designed to mold the undercut feature. This slanted pin structure slides during the ejection process, resulting in high sliding friction, which can cause the slanted top structure to slide unsmoothly and easily become stuck.

[0004] Therefore, in modern injection mold design, the design and optimization of the slider mechanism is crucial. It must not only meet the molding and demoulding requirements of the undercut structure in different directions of the product, but also take into account the smooth demoulding process. Utility Model Content

[0005] In order to meet the molding and demoulding requirements of the undercut structure of the product in different directions and ensure a smooth demoulding process, the present application provides a demoulding mechanism and an injection mold with an anti-stuck design.

[0006] The present application provides an anti-stuck demoulding mechanism and an injection mold that adopt the following technical solutions:

[0007] An anti-jamming demoulding mechanism, comprising:

[0008] Sliders for product molding;

[0009] A fixed seat, arranged in the slider and fixedly arranged;

[0010] A plurality of oblique pins are provided through the slider and are slidably connected to the slider, one end of the oblique pin is provided on the fixing seat and slides on the fixing seat, and the other end is used for forming the product undercut;

[0011] The abutting rod assembly is arranged on the side of the angled pin away from the product. The angled pin is in abutment connection with the fixed seat through the abutting rod assembly, and the fixed seat is provided with a convex part and a concave part corresponding to the abutting rod assembly;

[0012] During injection molding, the abutting rod assembly is in abutment connection with the convex part; during mold opening, the slider is driven to move. The angled pin slides on the fixed seat through the abutting rod assembly. The angled pin moves away from the side of the undercut and separates from the undercut. When the abutting rod assembly moves to the position of the concave part, part of the abutting rod assembly enters the concave part, thereby driving the angled pin to move away from the product and separating from the product.

[0013] By adopting the above technical solution, during the injection molding stage, the abutting rod assembly is in abutment connection with the convex part of the fixed seat, ensuring the stable operation of the angled pin during the molding work and guaranteeing the accurate molding of the undercut part; during the mold opening stage, the slider is driven to move. At this time, due to the inclined design of the angled pin itself, the design that the angled pin slides on the fixed seat through the abutting rod assembly, and the sliding connection restriction between the slider and the angled pin, when the slider moves, the angled pin will move relatively away from the side of the undercut and separate from the undercut. When the abutting rod assembly rolls to the position of the concave part, part of it enters the concave part, thereby driving the angled pin to move away from the product and realizing the separation from the product; the rolling effect of the abutting rod assembly of the present application effectively reduces the jamming problems that the angled pin may encounter during the demolding process, improving the stability and efficiency of production; and through the design of the concave part and the abutting rod assembly, not only the frictional resistance in the demolding work is reduced, but also the movement path of the angled pin can be controlled, ensuring that the angled pin separates from the undercut first and then from the product, thus ensuring the accuracy and reliability of the demolding process.

[0014] In a specific feasible implementation, the abutting rod assembly includes a roller and a rotating shaft arranged to rotate. An installation groove is provided at the end of the angled pin. The roller is arranged in the installation groove. The roller is connected to the angled pin through the rotating shaft, and the roller extends out of the installation groove; during injection molding, the roller is in abutment connection with the convex part, and during mold opening, the roller rolls on the fixed seat. When the roller rolls to the position of the concave part, part of the roller rolls into the concave part.

[0015] By adopting the above technical solution, when mold opening is required, the slider is driven to move. Due to the roller design in the groove at the end of the angled pin, the roller starts to roll on the fixed seat. This design allows the roller to drive the angled pin to move away from the product when rolling, realizing the separation from the undercut part. When the roller rolls to the position of the concave part, part of the roller enters the concave part, thereby guiding the angled pin to further move away from the product and completely realizing the separation from the product; the extension of the roller in the installation groove enables the angled pin to smoothly contact the fixed seat when moving, thereby avoiding unnecessary friction and resistance, achieving the effect of preventing jamming, and improving the stability and efficiency of the product injection molding and demolding processes.

[0016] In a specific feasible implementation, a gap is left between the lifter pin and the recess.

[0017] By adopting the above technical solution, the existence of the gap ensures that the lifter pin does not contact the convex part during movement, preventing the lifter pin from being hindered by frictional force when moving, thus ensuring the smooth movement of the lifter pin, effectively preventing jamming, and prolonging the service life of the lifter pin.

[0018] In a specific feasible implementation, the diameter of the roller is larger than the groove body width of the recess; such that only a part of the structure of the roller rolls into the recess during demolding.

[0019] By adopting the above technical solution, when the lifter pin is guided by the roller into the recess, only a part of the structure of the roller enters the recess; since the diameter of the roller is larger than the groove body width of the recess, this means that during demolding, the roller can ensure that the lifter pin moves further away from the product, which can fully achieve the separation of the lifter pin from the product, ensuring that the product is not subject to additional friction or obstruction during demolding; and the design that only a part of the roller rolls into the recess is also helpful for subsequent resetting work. This design can control the position and penetration depth of the roller. Once the product demolding is completed, the lifter pin can be accurately reset to the appropriate position through the design of the roller, preparing for the next production cycle.

[0020] In a specific feasible implementation, the lifter pin includes an inclined rod part and a forming part provided at one end of the inclined rod part, the roller is provided at the other end of the inclined rod part, and the diameter of the roller is larger than the width of the inclined rod part.

[0021] By adopting the above technical solution, the diameter of the roller being larger than the width of the inclined rod part ensures that the lifter pin can contact the fixed seat or the recess through the roller when moving, rather than directly contacting other surfaces, reducing vibration and unnecessary friction, thereby preventing the lifter pin from jamming and prolonging its service life.

[0022] In a specific feasible implementation, a stop surface is provided inside the slider; when the stop surface contacts the fixed seat, the slider stops moving and the demolding work is completed.

[0023] By adopting the above technical solution, the stop surface, as a part inside the slider, is designed to contact the fixed seat under specific conditions, thereby stopping the movement of the slider, and thus ensuring the control of the position and movement of the slider when needed.

[0024] In a specific feasible implementation, it further includes a pressing plate, the pressing plate presses and fixes the lifter pin on the slider, and the lifter pin slides between the pressing plate and the slider.

[0025] By adopting the above technical solution, through the design of the pressure plate, the position of the angled pin on the slider can be controlled to ensure its relative sliding during movement according to the design requirements, and the stable movement of the angled pin on the slider can be guaranteed, avoiding unnecessary friction and position instability, thereby enhancing the overall reliability and performance; moreover, the use of the pressure plate simplifies the fixing process of the angled pin on the slider, improves the assembly efficiency, and also makes subsequent maintenance more convenient.

[0026] In a specific feasible implementation, it further includes a driving member, the driving member is connected to the slider, and the driving member is used to drive the slider to move.

[0027] By adopting the above technical solution, through the effective connection and movement control between the driving member and the slider, the moving speed and position of the slider can be controlled, and the overall working efficiency can be improved, reducing energy loss and ensuring a stable operating state.

[0028] In a specific feasible implementation, it further includes a restraint block, the restraint block is arranged on the side of the slider away from the product and abuts against the slider; when the mold is opened, the restraint block moves and releases the restriction on the slider.

[0029] By adopting the above technical solution, when the mold is closed, the restraint block is fixed in a position to restrict the movement state of the slider, ensuring that the slider remains stable when the mold injects or presses the product to ensure the shape and quality of the product; when the mold needs to be opened to take out the molded product, the restraint block can move to release the restriction on the slider, enabling the slider to move freely for the smooth removal of the product; by using the design of the restraint block, the movement state of the slider during mold opening can be effectively managed and controlled, thereby ensuring the smooth progress of the production process and improving production efficiency and product quality.

[0030] An injection mold includes the demolding mechanism as described above.

[0031] In summary, the beneficial technical effects of this application: This application mainly designs a resisting rod assembly on the angled pin. By using the rolling effect of the resisting rod assembly, the jamming problem that the angled pin may encounter during demolding can be effectively reduced, improving the stability and efficiency of production; and through the design of the concave portion and the resisting rod assembly, not only the frictional resistance in the demolding work is reduced, but also the movement path of the angled pin can be controlled to ensure that the angled pin separates from the undercut first and then from the product, thereby ensuring the accuracy and reliability of the demolding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the demolding mechanism and the injection mold in the embodiment of this application.

[0033] Figure 2 It is an enlarged view for showing the demolding mechanism.

[0034] Figure 3 It is a cross-sectional view for showing the demolding mechanism.

[0035] Figure 4 It is a cross-sectional view for showing the abutting rod assembly.

[0036] Figure 5 It is a schematic diagram for showing the positional relationship among the slider, the angled pin and the pressing plate.

[0037] Figure 6 It is a schematic diagram for showing the structures of the pressing plate, the driving member and the binding block.

[0038] Explanation of reference numerals: 1, product; 2, injection mold; 21, upper mold; 22, lower mold; 23, mold core; 3, demolding mechanism; 31, angled ejector rod; 32, binding block; 4, slider; 41, moving space; 42, stopping surface; 5, fixed seat; 51, recess; 52, protrusion; 6, angled pin; 61, angled rod portion; 62, forming portion; 63, mounting groove; 7, abutting rod assembly; 71, roller; 72, rotating shaft; 8, pressing plate; 9, driving member; 10, gap. Detailed implementation manners

[0039] The following further elaborates on this application in conjunction with the attached Figure 1-6 drawings.

[0040] Refer to Figure 1 , an embodiment of this application discloses an anti-sticking demolding mechanism for separating the injection mold 2 from the product 1. In this embodiment, the injection mold 2 includes an upper mold 21 and a lower mold 22, and a mold core 23 for forming the product 1 is embedded in the lower mold 22;

[0041] Refer to Figure 2 and Figure 3 , the demolding mechanism 3 is arranged on the lower mold 22, and the demolding mechanism 3 includes:

[0042] A slider 4, a part of the structure of the slider 4 is located in the mold core 23 and is used together with the mold core 23 for forming the product 1 and its undercuts. In this embodiment, the slider 4 moves along the x direction;

[0043] A fixed seat 5, which is arranged in the slider 4 and is fixedly set. In this embodiment, a part of the structure of the fixed seat 5 extends out of the slider 4 and is located on the lower mold 22. The fixed seat 5 includes but is not limited to being fixed on the lower mold 22 by bolts. One outer wall of the fixed seat 5 abuts against the inner wall of the slider 4, and a moving space 41 is left between the other outer wall and the inner wall of the slider 4; in this embodiment, a stopping surface 42 is provided in the slider 4; in the initial state, a moving space 41 is left between the stopping surface 42 of the slider 4 and the fixed seat 5, and when the stopping surface 42 contacts the fixed seat 5, the slider 4 stops moving;

[0044] Multiple lifters 6. In this embodiment, there are two lifters 6. The two lifters 6 are both inclined and symmetrically arranged on the fixed seat 5. The two lifters 6 pass through the slider 4 and are slidably connected to the slider 4. One end of the lifter 6 is arranged on the fixed seat 5 and slides on the fixed seat 5, and the other end is used for forming the undercut of the product 1.

[0045] The abutting rod assembly 7 is arranged on the side of the lifter 6 away from the product 1. The abutting rod assembly 7 is provided with two and is respectively arranged corresponding to the lifter 6. The lifter 6 abuts against the fixed seat 5 through the abutting rod assembly 7. The fixed seat 5 is provided with a convex part 52 and a concave part 51 corresponding to the abutting rod assembly 7. In this embodiment, the abutting rod assembly 7 drives the two lifters 6 to first move in opposite directions along the y direction, that is, move away from the undercut, and then the two lifters 6 move along the x direction following the roller 71. The x direction is perpendicular to the y direction.

[0046] During the injection molding stage, the abutting rod assembly 7 abuts against the convex part 52 of the fixed seat 5 to ensure the stable operation of the lifter 6 during the forming work and ensure the accurate forming of the undercut part. During the mold opening stage, the upper mold 21 is driven to move along the z direction and open, and then the slider 4 is driven to move along the x direction. At this time, due to the inclined design of the lifter 6 itself, the design that the lifter 6 slides on the fixed seat 5 through the abutting rod assembly 7, and the sliding connection restriction between the slider 4 and the lifter 6, when the slider 4 moves, the abutting rod assembly 7 will drive the lifter 6 to first move in the y direction relative to the side away from the undercut to separate from the undercut. When the abutting rod assembly 7 moves to the position of the concave part 51, a part of the abutting rod assembly 7 enters the concave part 51 along the x direction, thereby driving the lifter 6 to move along the x direction away from the product 1, realizing the separation from the product 1.

[0047] Refer to Figure 3 and Figure 4 As shown in FIG. 13 and FIG. 14, the abutting rod assembly 7 includes a rotatably arranged roller 71 and a rotating shaft 72. An installation groove 63 is provided at the end of the lifter 6. The roller 71 is arranged in the installation groove 63. The roller 71 is connected to the lifter 6 through the rotating shaft 72. The rotating shaft 72 passes through the roller 71 and is fixedly connected to the roller 71. Both ends of the rotating shaft 72 penetrate out of the roller 71 and the penetrated ends are inserted into the lifter 6 and fixed on the lifter 6. The rotating shaft 72 is rotatably connected to the lifter 6. A part of the structure of the roller 71 extends out of the installation groove 63 and abuts against the fixed seat 5. The extension of the roller 71 in the installation groove 63 enables the lifter 6 to smoothly contact the fixed seat 5 when moving, thereby avoiding unnecessary friction and resistance, achieving the effect of preventing jamming, and improving the stability and efficiency of the injection molding and demolding processes of the product 1.

[0048] Refer to Figure 2 and Figure 4 As shown in FIG. 15 and FIG. 16, in the initial state, the convex part 52 abuts against the roller 71, and there is a gap 10 between the lifter 6 and the convex part 52. During the mold opening stage, the roller 71 rolls and gradually releases the contact relationship with the convex part 52.

[0049] When the roller 71 moves, it can roll more smoothly by contacting the protrusion 52 without excessive wear due to excessive friction, thereby extending the service life of the roller 71. The presence of the gap 10 ensures that the inclined pin 6 does not contact the protrusion 52 during movement, preventing the inclined pin 6 from being hindered by friction during movement, thereby ensuring smooth movement of the inclined pin 6, effectively preventing jamming, and extending the service life of the inclined pin 6.

[0050] Reference Figure 2 and Figure 4 The oblique pin 6 includes an oblique rod portion 61 and a forming portion 62 provided at one end of the oblique rod portion 61 . A roller 71 is provided at the other end of the oblique rod portion 61 . The diameter of the roller 71 is greater than the width of the oblique rod portion 61 . This ensures that the oblique pin 6 can contact the fixing seat 5 or the recess 51 through the roller 71 when moving, rather than directly contacting other surfaces. This reduces vibration and unnecessary friction, thereby preventing the oblique pin 6 from getting stuck and extending its service life.

[0051] The diameter of the roller 71 is greater than the width of the groove of the recess 51, so that during demolding, only a portion of the roller 71 rolls into the recess 51. When the inclined pin 6 is guided into the recess 51 by the roller 71, only a portion of the roller 71 enters the recess 51. Since the diameter of the roller 71 is greater than the width of the groove of the recess 51, this means that during demolding, the roller 71 can ensure that the inclined pin 6 moves further away from the product 1. This can completely separate the inclined pin 6 from the product 1, ensuring that the product 1 is not subjected to additional friction or obstruction during demolding. In addition, the design of the roller 71 only partially rolling into the recess 51 also facilitates subsequent resetting. This design can control the position and insertion depth of the roller 71. Once the product 1 is demolded, the inclined pin 6 can be accurately reset to the appropriate position through the design of the roller 71, ready for the next production cycle.

[0052] During the injection molding process, the slider 4 is in a fixed position, and the roller 71 abuts against the convex portion 52 of the fixing seat 5. At this time, the inclined pin 6 contacts the fixing seat 5 through the roller 71 installed in its end groove, thereby ensuring the stability and accuracy of the inclined pin 6 during molding; when the mold needs to be opened, the slider 4 is driven to move. Due to the design of the roller 71 in the end groove of the inclined pin 6, the roller 71 begins to roll on the fixing seat 5, gradually releasing the contact relationship with the convex portion 52. This design allows the roller 71 to drive the inclined pin 6 to move to the side away from the product 1 when rolling, thereby achieving separation from the undercut part. When the roller 71 rolls to the position of the recess 51, part of the roller 71 enters the recess 51, thereby guiding the inclined pin 6 to move further away from the product 1, thereby completely achieving separation from the product 1.

[0053] Reference Figure 4 and Figure 5, the demolding mechanism 3 further includes a pressing plate 8. The pressing plate 8 presses and fixes the angled pin 6 on the slider 4. The angled pin 6 slides between the pressing plate 8 and the slider 4. In this embodiment, the pressing plate 8 includes but is not limited to being connected to the slider 4 by bolts;

[0054] During assembly, the end of the angled pin 6 with the roller 71 installed is placed on the fixed seat 5 so that the roller 71 abuts against the fixed seat 5. The other end of the angled pin 6 passes through the slider 4 and is inserted into the mold core 23 for undercut molding. Then, the pressing plate 8 is installed. The pressing plate 8 is fixedly connected to the slider 4 by bolts. The pressing plate 8 will press the angled pin 6 between the slider 4 and the pressing plate 8 to complete the installation of the angled pin 6; The use of the pressing plate 8 simplifies the fixing process of the angled pin 6 on the slider 4, improves the assembly efficiency, and also makes subsequent maintenance more convenient;

[0055] During the moving process, the design of the pressing plate 8 can control the position of the angled pin 6 on the slider 4, ensure its relative sliding according to the design requirements during the movement process, and ensure the stable movement of the angled pin 6 on the slider 4, avoiding unnecessary friction and position instability, thereby improving the overall reliability and performance.

[0056] In this embodiment, the demolding mechanism 3 further includes a lifter rod 31. The lifter rod 31 passes through the mold core 23 and contacts the product 1. After both the slider 4 and the angled pin 6 are separated from the product 1, the product 1 is ejected from the mold core 23 by driving the lifter rod 31 to complete demolding.

[0057] Refer to Figure 6 , the demolding mechanism 3 further includes a restraint block 32. The restraint block 32 is arranged on the side of the slider 4 away from the product 1. The restraint block 32 abuts against the slider 4. In this embodiment, one end of the restraint block 32 is fixed to the upper mold 21, and the other end is inserted into the lower mold 22 to abut against the slider 4; When the mold is closed, the restraint block 32 is fixed in a position to limit the moving state of the slider 4, ensuring that the slider 4 remains stable during mold injection or pressing of the product 1 to ensure the shape and quality of the product 1; When the mold needs to be opened to take out the molded product 1, the upper mold 21 moves to drive the restraint 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 to facilitate the smooth removal of the product 1; Through the design of the restraint block 32, the movement state of the slider 4 during mold opening can be effectively managed and controlled, thereby ensuring the smooth progress of the production process and improving production efficiency and the quality of the product 1.

[0058] A driving member 9 is provided on the side of the slider 4 away from the product 1. The driving member 9 is fixedly connected to the slider 4. In this embodiment, the driving member 9 includes but is not limited to a cylinder, a hydraulic cylinder, and an oil cylinder. The driving member 9 is used to drive the slider 4 to move; Through the effective connection and movement control between the driving member 9 and the slider 4, the moving speed and position of the slider 4 can be controlled, and the overall working efficiency can be improved, energy loss can be reduced, and a stable operating state can be ensured.

[0059] The implementation principle of the embodiments of this application is as follows: This application mainly reduces the jamming problems that the angled pin 6 may encounter during the demolding process through the rolling action of the abutting rod assembly 7, improving the stability and efficiency of production; and through the design of the concave portion 51 and the abutting rod assembly 7, it not only reduces the frictional resistance during the demolding work, but also controls the movement path of the angled pin 6 to ensure that the angled pin 6 separates from the undercut first and then from the product 1, thereby ensuring the accuracy and reliability of the demolding process.

[0060] In the injection molding state, 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 1, the slider 4 remains stable to ensure the shape and quality of the product 1. At the same time, the roller 71 abuts and fixes against the convex portion 52 on the fixed seat 5 to restrict the movement state of the angled pin 6, ensuring that when the mold injects or presses the product 1, the angled pin 6 remains stable to ensure the shape and quality of the undercut.

[0061] When the mold needs to be opened to take out the molded product 1, the upper mold 21 moves to drive the beam block 32 to move to release the restriction on the slider 4, and the driving member 9 is activated. The driving member 9 drives the slider 4 to move along the x direction away from the product 1 to separate from the product 1.

[0062] At this time, due to the inclined design of the angled pin 6 itself, the sliding connection restriction between the slider 4 and the angled pin 6, and the design of the roller 71 in the end groove of the angled pin 6, the roller 71 first rolls along the y direction on the fixed seat 5 and gradually releases the contact relationship with the convex portion 52. This design allows the roller 71 to drive the angled pin 6 to move away from the undercut along the y direction first when rolling, realizing the separation from the undercut part. When the roller 71 rolls to the position of the concave portion 51, part of the roller 71 rolls into the concave portion 51 along the x direction, thereby guiding the angled pin 6 to move away from the product 1 along the x direction to completely separate from the product 1.

[0063] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A demoulding mechanism that prevents jamming, characterized in that: Comprising: A slider (4) for product (1) forming; A fixed seat (5), which is arranged inside the slider (4) and fixedly installed; A plurality of lifters (6), which are inserted through the slider (4) and slidably connected to the slider (4). One end of the lifter (6) is arranged on the fixed seat (5) and slides on the fixed seat (5), and the other end is used for forming the undercut of the product (1); A pressing rod assembly (7), which is arranged on the side of the lifter (6) away from the product (1). The lifter (6) is in contact with the fixed seat (5) through the pressing rod assembly (7). The fixed seat (5) is provided with a convex part (52) and a concave part (51) corresponding to the pressing rod assembly (7); During injection molding, the pressing rod assembly (7) is in contact with the convex part (52); during mold opening, the slider (4) is driven to move, and the lifter (6) slides on the fixed seat (5) through the pressing rod assembly (7). The lifter (6) moves away from the undercut side and separates from the undercut. When the pressing rod assembly (7) moves to the position of the concave part (51), a part of the pressing rod assembly (7) enters the concave part (51), thereby driving the lifter (6) to move away from the product (1) side and separate from the product (1).

2. The anti-sticking demolding mechanism according to claim 1, wherein: The pressing rod assembly (7) includes a rotatably arranged roller (71) and a rotating shaft (72). An installation groove (63) is provided at the end of the lifter (6). The roller (71) is arranged in the installation groove (63). The roller (71) is connected to the lifter (6) through the rotating shaft (72), and the roller (71) extends out of the installation groove (63); during injection molding, the roller (71) is in contact with the convex part (52); during mold opening, the roller (71) rolls on the fixed seat (5). When the roller (71) rolls to the position of the concave part (51), a part of the roller (71) rolls into the concave part (51).

3. The anti-sticking demolding mechanism according to claim 2, characterized in that: A gap (10) is left between the lifter (6) and the convex part (52).

4. The anti-sticking demoulding mechanism according to claim 2, wherein: The diameter of the roller (71) is greater than the groove body width of the concave part (51); so that only a part of the structure of the roller (71) rolls into the concave part (51) during demolding.

5. The anti-sticking demolding mechanism according to claim 2, characterized in that: The lifter (6) includes an inclined rod part (61) and a forming part (62) arranged at one end of the inclined rod part (61). The roller (71) is arranged at the other end of the inclined rod part (61), and the diameter of the roller (71) is greater than the width of the inclined rod part (61).

6. The anti-sticking demolding mechanism according to claim 1, characterized in that: A stop surface (42) is provided inside the slider (4); when the stop surface (42) contacts the fixed seat (5), the slider (4) stops moving and the demolding work is completed.

7. The anti-sticking demolding mechanism according to claim 1, characterized in that: It further includes a pressing plate (8), the pressing plate (8) presses and fixes the lifter (6) on the slider (4), and the lifter (6) slides between the pressing plate (8) and the slider (4).

8. The anti-sticking demolding mechanism according to claim 1, characterized in that: It further includes a driving part (9), the driving part (9) is connected to the slider (4), and the driving part (9) is used to drive the slider (4) to move.

9. The anti-sticking demolding mechanism according to claim 1, characterized in that -: It further includes a beam block (32), the beam block (32) is arranged on the side of the slider (4) away from the product (1) and abuts against the slider (4); when the mold is opened, the beam block (32) moves and releases the restriction on the slider (4).

10. An injection mold, characterized in that: It includes the anti-sticking demolding mechanism according to any one of claims 1-9.

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