A double-slanted sliding block demolding mechanism and mold

Abstract

This invention relates to the field of injection mold technology, and particularly to a double-slanted sliding block demolding mechanism and mold. The demolding mechanism includes a first slide block, a second slide block, and a driving component. The first slide block is slidably mounted on the lower mold. The driving component is connected to the first slide block and drives it to reciprocate along a first direction. The second slide block is guided and slidably mounted on the first slide block, and its sliding direction forms a preset angle with the first direction to generate displacement in a second direction when it moves with the first slide block. A sliding block insert for forming an undercut on the inner side of the molded product is slidably mounted on the second slide block, and its sliding direction forms preset angles with both the first and second directions to generate displacement in a third direction when it moves with the second slide block. During mold opening, the driving component drives the first slide block to slide, which in turn drives the second slide block to slide, thereby causing the sliding block insert to exit from the undercut on the inner side of the product. This invention effectively solves the technical problem in the prior art where conventional sliding blocks and angled ejectors cannot demold when the undercut on the inner side of the product has a spatial tilt angle.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to a double-slanted sliding block demolding mechanism and mold. Background Technology

[0002] In the field of injection molding, when an undercut structure is formed inside a product, a specific core-pulling mechanism is needed to demold the undercut during mold opening or ejection. Currently, there are two main common methods for handling internal undercuts: one is to use a slider core-pulling structure, where a slider is driven to move horizontally by a slanted guide post, allowing the core part forming the undercut to exit the undercut area first; the other is to use a slanted ejector core-pulling structure, where the slanted ejector rod is tilted during ejection, causing the slanted ejector block to move laterally while being ejected, thus detaching from the undercut.

[0003] For example, patent document CN217729534U discloses a mold with a slanted ejector mechanism on a slide. This mold includes a front mold, a rear mold, a slide, and a slanted ejector mechanism. The slide is mounted on the rear mold and can move back and forth. The front mold has a slide pushing device. The slanted ejector mechanism includes a slanted ejector rod, a slanted ejector seat, and an elastic element connected in sequence. The elastic element is installed in a limiting hole in the slide. The front end of the slanted ejector rod has a slanted ejector block that extends into the mold cavity and its top end abuts against a slanted ejector block on the rear mold. During mold opening, the slide pushing device drives the slide and elastic element to move backward, causing the slanted ejector rod to move forward. Simultaneously, the slanted ejector block slides inward along the slanted ejector block to disengage from the undercut of the injection molded part, thereby achieving demolding.

[0004] However, when the undercut on the inner side of the product is not only located inside the deep cavity of the mold, but also has an angle between its demolding direction and the mold opening direction in two dimensions (i.e., the undercut has a spatial tilt angle), the conventional slider or angled ejector structure mentioned above is difficult to effectively achieve demolding. This is mainly because the traditional slider movement trajectory is restricted to a single plane, which cannot simultaneously meet the displacement requirements of both the "inner deep cavity" and "compound angle core pulling" dimensions; while the traditional angled ejector mechanism can achieve tilted core pulling, its tilt direction is also limited by the ejection direction, and it cannot handle compound angle undercuts with both lateral and longitudinal displacement components. If multiple core pulling is attempted using a combination of multiple mechanisms, it will lead to a bulky mold structure, a significant increase in manufacturing costs, and easy motion interference between mechanisms in a limited space, making it difficult to guarantee the stability and reliability of long-term operation. Summary of the Invention

[0005] This invention provides a double-slanted sliding block demolding mechanism to solve the technical problem in the prior art that conventional sliding blocks and slanted ejectors cannot demold when the inner undercut of the product has a spatial tilt angle; the purpose of this invention is also to provide a mold.

[0006] To solve the above problems, the double-slanted sliding block demolding mechanism provided by the present invention adopts the following technical solution: A double-slanted sliding block demolding mechanism includes a first slide block, a second slide block, and a driving component; The slide block is slidably mounted on the lower mold; The driving component is connected to the first slide block and is used to drive the first slide block to reciprocate along a first direction; the second slide block is guided and slidably mounted on the first slide block, and its sliding direction is at a preset angle with the first direction, so as to generate displacement in a second direction when it moves with the first slide block; the second slide block is slidably mounted with a slider insert for inverting the inner side of the molded product, and the sliding direction of the slider insert is at a preset angle with both the first direction and the second direction, so as to generate displacement in a third direction when it moves with the second slide block; When the mold is opened, the driving component drives the first slide to slide, which in turn drives the second slide to slide, thereby causing the slider insert to move along the third direction and exit from the undercut inside the product.

[0007] The beneficial effects of the double-slanted sliding block demolding mechanism provided by this invention are: Conventional sliders can only perform linear reciprocating motion in a single plane, which cannot adapt to the multi-dimensional displacement required for spatial tilting and inversion. However, this application provides the basic main motion for the entire mechanism by sliding the slide block in a straight line along the first direction, serving as the power source and motion basis for subsequent secondary and tertiary sliding, thus breaking the structural limitations of traditional sliders that do not have layered motion.

[0008] In this application, the second slide is mounted on the first slide in a guided sliding manner, and the sliding direction of the second slide is at a preset angle to the first direction. When the first slide moves, it generates a displacement in the second direction. The displacements in the first and second directions are superimposed to form a composite motion trajectory in a two-dimensional plane, which solves the problem that conventional sliders can only move in a single straight line and cannot adapt to the tilt angle in the plane, and provides an intermediate transition motion for spatial angle demolding.

[0009] In this application, the slider insert is slidably assembled on the slide block two, and its sliding direction is at a preset angle to both the first and second directions. When the slide block two moves, it generates a third-direction displacement. The displacement spaces of the first, second, and third directions are superimposed to form a three-dimensional spatial composite demolding trajectory. This trajectory can perfectly fit the demolding direction of the inverted angle of the inner space of the product, breaking through the core defect of conventional inclined ejectors that "only tilt along the ejection direction and have no multi-dimensional spatial movement", and achieving precise core pulling of the inverted angle of the space.

[0010] When the mold is opened, the driving component drives the slide to move, which in turn drives the second slide to move, and then drives the slider insert. The three-level sliding is synchronously linked and transmitted step by step. The slider insert moves along the preset three-dimensional spatial trajectory and exits along the angle direction of the inclined undercut on the inner side of the product. This avoids hard contact and jamming with the undercut, and also avoids pulling the undercut and causing deformation. Finally, the demolding of the inclined undercut on the inner side of the space is achieved.

[0011] In summary, the present invention effectively solves the technical problem in the prior art that conventional sliders and angled ejectors cannot demold when the inner undercut of the product has a spatial tilt angle.

[0012] Furthermore, the driving component is a bent pin, which includes a vertical section and an inclined section connected from top to bottom. The vertical section is fixedly installed on the upper mold, and the inclined section passes through the slide block and the lower mold to drive the slide block to move along the first direction when the mold is opened.

[0013] Beneficial effects: The driving component adopts a vertical section and an inclined section structure connected from top to bottom. By utilizing the separation movement of the upper and lower molds during mold opening, the vertical mold opening force is converted into the driving force in the first direction through the cooperation of the inclined section and the first slide. The driving method is simple and reliable, and no additional power source is required to provide a stable power foundation for the three-level linkage demolding of the second slide and the slider insert, ensuring that the demolding action is accurate and without delay.

[0014] Furthermore, the lower mold is provided with a base plate and a guide rail in sequence along the first direction. The base plate is located below the first slide to support the first slide and the second slide. The guide rail is connected to the base plate to provide guidance for the sliding of the first slide along the first direction.

[0015] Furthermore, the first slide is provided with an inclined guide rail, and the angle between the inclination direction of the inclined guide rail and the first direction is an obtuse angle. The second slide is slidably assembled on the inclined guide rail.

[0016] Beneficial effects: By setting an obtuse angle guide rail on the first slide block and sliding the second slide block onto the obtuse angle guide rail, the sliding direction of the second slide block is made to form a different motion direction from the first direction of the first slide block by the obtuse angle tilt guide, so that the second slide block generates an independent second direction displacement when it moves with the first slide block, thereby realizing the directional differentiation and motion decomposition of the two-stage sliding.

[0017] Furthermore, the top surface of the second slide block is provided with a slide rail extending along the fourth direction. The lower mold is also equipped with a slide rail extending along the third direction. The slider insert is slidably mounted on the slide rail and the slide rail. When the second slide block moves along the second direction, its top surface moves relative to the slider insert along the fourth direction to disengage from the slider insert. The slider insert then moves along the slide rail along the third direction to detach from the product, thereby achieving product demolding.

[0018] Beneficial effects: By setting a slide rail extending along the fourth direction on the top surface of the slide block two and a slide rail extending along the third direction on the lower mold, the slider insert can be simultaneously slidably assembled onto the slide rail and the slide rail, thus achieving motion decoupling and step-by-step demolding between the slide block two and the slider insert. When the slide block two moves along the second direction, its top surface can slide relative to the slider insert along the fourth direction and detach from it, so that the slider insert is no longer constrained by the motion of the slide block two, but is instead guided solely by the slide rail on the lower mold and moves stably along the third direction. This avoids motion interference between the slide block two and the slider insert, and allows the slider insert to independently complete core pulling and demolding along the third direction that precisely matches the tilted undercut of the inner space of the product, ensuring that the demolding trajectory and the undercut angle are perfectly matched, effectively preventing the undercut of the product from being pulled, scratched, or deformed. At the same time, through the dual guidance of the slide rail and the slide rail, the stability and positioning accuracy of the slider insert's movement are further improved, making the entire demolding process more reliable and smoother.

[0019] Furthermore, a guide block is fixedly installed on the lower mold, and a guide groove is provided on the slide block 2 for sliding assembly of the guide block, so as to provide guidance for the movement of the slide block 2 along the second direction by sliding the guide block in the guide groove.

[0020] Furthermore, the lower mold is provided with a limiting member to limit the movement distance of the slide block along the first direction.

[0021] Furthermore, the limiting component includes a limiting block, a pull rod, and an elastic element. The limiting block is installed on the lower mold, the pull rod extends along the first direction, passes through the limiting block, and is installed on the slide block. The elastic element is fitted onto the pull rod.

[0022] Beneficial effects: This application sets the limiting component as a combination structure of a limiting block, a pull rod, and an elastic element. The pull rod extends along the first direction and passes through the limiting block, connecting to the slide block. It can move synchronously with the slide block. The limiting block fixed on the lower mold achieves precise mechanical limiting of the slide block's travel, avoiding problems such as mechanical interference, mold collision, or excessive core pulling of the slide block insert caused by the slide block's overtravel. This ensures that the core pulling stroke matches the demolding requirements of the product's inner undercut. The elastic element sleeved on the pull rod can provide auxiliary restoring force for the slide block during the mold closing process.

[0023] Furthermore, a wear-resistant component is provided between the lower mold and the slide block.

[0024] To solve the above problems, the mold provided by the present invention adopts the following technical solution: A mold includes an upper mold, a lower mold, and a double-slanted sliding block demolding mechanism; The double-slanted sliding block demolding mechanism includes a slide block one, a slide block two, and a driving component; The slide block is slidably mounted on the lower mold; The driving component is connected to the first slide block and is used to drive the first slide block to reciprocate along a first direction; the second slide block is guided and slidably mounted on the first slide block, and its sliding direction is at a preset angle with the first direction, so as to generate displacement in a second direction when it moves with the first slide block; the second slide block is slidably mounted with a slider insert for inverting the inner side of the molded product, and the sliding direction of the slider insert is at a preset angle with both the first direction and the second direction, so as to generate displacement in a third direction when it moves with the second slide block; When the mold is opened, the driving component drives the first slide to slide, which in turn drives the second slide to slide, thereby causing the slider insert to move along the third direction and exit from the undercut inside the product.

[0025] The beneficial effects of the mold provided by this invention are: This application integrates a double-slant sliding block mechanism into the mold body composed of an upper mold and a lower mold. Based on the sliding assembly of slide block 1 on the lower mold, the slide block 1 is driven to reciprocate along the first direction by a driving component, providing a basic power source and motion carrier for the entire double-slant sliding mechanism.

[0026] The second slide block is guided and slidably mounted on the inclined guide rail of the first slide block, and its sliding direction forms a preset angle with the first direction. As the first slide block moves, it generates a displacement in the second direction. The preset angle distinguishes the sliding direction of the second slide block from the first direction of the first slide block; they are no longer movements in the same dimension, but rather two displacement components in different directions. Compared to conventional slide blocks that can only move in a single direction, the second slide block achieves composite displacement in a two-dimensional plane through the dual action of moving with the first slide block and its own inclined sliding. This allows it to adapt to the tilt angle of a single plane within the product, solving the problem that conventional slide blocks cannot match the tilt angle of a plane.

[0027] The slider insert is slidably assembled on the slide block two, and the sliding direction is at a preset angle with both the first and second directions. As the slide block two moves, it generates a third-direction displacement. Through this three-level linkage structural design, a three-dimensional composite displacement trajectory is formed, so that the displacement direction of the slider insert is completely coincident with the demolding direction of the inclined undercut in the inner space of the product. The slider insert moves smoothly out along the angle direction of the inclined undercut in the inner space of the product throughout the entire process, rather than being hard-topped or pulled by the undercut. This avoids problems such as deformation, tearing, and jamming of the undercut in conventional demolding mechanisms, and achieves non-damaging and non-interference core pulling of the inclined undercut in the space.

[0028] In summary, the present invention effectively solves the technical problem in the prior art that conventional sliders and angled ejectors cannot demold when the inner undercut of the product has a spatial tilt angle.

[0029] Furthermore, the driving component is a bent pin, which includes a vertical section and an inclined section connected from top to bottom. The vertical section is fixedly installed on the upper mold, and the inclined section passes through the slide block and the lower mold to drive the slide block to move along the first direction when the mold is opened.

[0030] Beneficial effects: The driving component adopts a bent pin structure composed of vertical and inclined sections connected sequentially from top to bottom. It can utilize the relative separation movement of the upper and lower molds during the mold opening process, and through the cooperation of the inclined section and the first slide, the vertical mold opening force of the mold is converted into a driving force along the first direction. This driving method does not require an additional power source, has a simple structure, and is stable and reliable in operation. It can provide a stable power foundation for the three-stage linkage demolding of the subsequent second slide and slider insert, ensuring that the overall demolding action is accurate and has no lag.

[0031] Furthermore, the lower mold is provided with a base plate and a guide rail in sequence along the first direction. The base plate is located below the first slide to support the first slide and the second slide. The guide rail is connected to the base plate to provide guidance for the sliding of the first slide along the first direction.

[0032] Furthermore, the first slide is provided with an inclined guide rail, and the angle between the inclination direction of the inclined guide rail and the first direction is an obtuse angle. The second slide is slidably assembled on the inclined guide rail.

[0033] Beneficial effects: This application provides an obtuse-angled guide rail on the first slide block and slide block two is slidably assembled on the obtuse-angled guide rail. When the first slide block moves along the first direction, the second slide block is forced to move along the inclination direction of the obtuse-angled guide rail, thereby forming a second direction movement different from the first direction. This motion decomposition achieved by the obtuse-angled inclination guide makes the sliding directions of the two-stage sliders different, thus providing a precise motion basis for the subsequent exit of the slider insert along the third direction.

[0034] Furthermore, the top surface of the second slide block is provided with a slide rail extending along the fourth direction. The lower mold is also equipped with a slide rail extending along the third direction. The slider insert is slidably mounted on the slide rail and the slide rail. When the second slide block moves along the second direction, its top surface moves relative to the slider insert along the fourth direction to disengage from the slider insert. The slider insert then moves along the slide rail along the third direction to detach from the product, thereby achieving product demolding.

[0035] Beneficial effects: By opening a slide rail extending along the fourth direction on the top surface of the second slide block and setting a slide rail extending along the third direction on the lower mold, the slider insert can be simultaneously slidably assembled on the slide rail and the slide rail. This enables the step-by-step decomposition of the movement of the second slide block and the slider insert. During the movement of the second slide block along the second direction, its top surface can slide relative to the slider insert along the fourth direction and separate from the slider insert, avoiding interference between the two movements. At the same time, the slider insert can move independently along the third direction by relying on the slide rail of the lower mold, and complete the core pulling demolding along the demolding direction of the inclined undercut in the inner space of the product. This dual-guided structure not only ensures the stability and accuracy of the demolding trajectory of the slider insert, but also effectively avoids the pulling and deformation of the undercut in the product during demolding through the step-by-step separation action. This further improves the three-dimensional linkage demolding logic of the double inclined slider demolding mechanism, and greatly improves the smoothness and molding yield of the product demolding with the inclined undercut in the space.

[0036] Furthermore, a guide block is fixedly installed on the lower mold, and a guide groove is provided on the slide block 2 for sliding assembly of the guide block, so as to provide guidance for the movement of the slide block 2 along the second direction by sliding the guide block in the guide groove.

[0037] Furthermore, the lower mold is provided with a limiting member to limit the movement distance of the slide block along the first direction.

[0038] Furthermore, the limiting component includes a limiting block, a pull rod, and an elastic element. The limiting block is installed on the lower mold, the pull rod extends along the first direction, passes through the limiting block, and is installed on the slide block. The elastic element is fitted onto the pull rod.

[0039] Beneficial effects: This application adopts a limiting structure composed of a limiting block, a pull rod, and an elastic element. The limiting block is fixed to the lower mold, and the pull rod extends along the first direction and passes through the limiting block, and is fixedly connected to the slide block, so that the pull rod can move synchronously with the slide block. By limiting the stroke of the pull rod by the limiting block, precise mechanical control of the movement distance of the slide block is achieved, effectively preventing problems such as mechanism interference, mold collision, or excessive core pulling of the slide insert caused by the slide block overtravel, and ensuring that the core pulling stroke is precisely matched with the demolding requirements of the inner undercut of the product. At the same time, the elastic element sleeved on the pull rod provides auxiliary reset force for the slide block during the mold closing process, improving the smoothness and reliability of the mechanism reset.

[0040] Furthermore, a wear-resistant component is provided between the lower mold and the slide block. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the double-slanted sliding block demolding mechanism provided by the present invention; Figure 2 for Figure 1 A bottom view; Figure 3 This is a schematic diagram of the structure of the mold provided by the present invention; Figure 4 for Figure 3 Top view; Figure 5 for Figure 4 Sectional view of AA in the middle; Figure 6 for Figure 4 Cross-sectional view of the middle section (BB).

[0042] Explanation of reference numerals in the attached figures: 1. Slide 1; 11. Inclined guide rail; 2. Slide 2; 21. Slide track; 22. Guide groove; 23. Sliding guide block; 3. Driving component; 31. Vertical section; 32. Inclined section; 4. Slider insert; 5. Product; 6. Upper mold; 7. Lower mold; 71. Base plate; 72. Guide rail; 721. Linear guide component; 73. Slide rail; 74. Guide block; 75. Limiting component; 751. Limiting block; 752. Tie rod; 753. Elastic component; 76. Wear-resistant component; 8. Slider core pulling. Detailed Implementation

[0043] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0044] An embodiment of the double-slanted sliding block demolding mechanism provided by the present invention: like Figures 1 to 6 As shown, the double-slanted sliding block demolding mechanism includes slide block 1, slide block 2, and driving component 3.

[0045] Regarding slide block 1, drive component 3, and the connection between slide block 1 and drive component 3: Slide block 1 is slidably assembled on the lower mold 7, and drive component 3 is connected to slide block 1 to drive slide block 1 to reciprocate along the first direction.

[0046] like Figure 2 As shown, in this embodiment, the lower mold 7 is provided with a base plate 71 and a guide rail 72 sequentially along the first direction. The base plate 71 is located below the slide block 1 to support the slide block 1 and the slide block 2. The guide rail 72 is connected to the base plate 71 to provide guidance for the sliding of the slide block 1 along the first direction. In this embodiment, the guide rail 72 includes two parallel linear guide members 721, and a guide slide 21 is formed between the two linear guide members 721. The bottom of the slide block 1 has a downwardly protruding slider, which is disposed in the guide slide 21. The linear guide members 721 are used to support the slide block 1.

[0047] In other embodiments, the lower mold 7 is provided only with guide rails 72.

[0048] like Figure 1As shown, in this embodiment, a wear-resistant component 76 is provided between the lower mold 7 and the slide block 1. Specifically, in this embodiment, the wear-resistant component 76 is fixedly installed on the lower mold 7; in other embodiments, the wear-resistant component 76 is fixedly installed on the slide block 1.

[0049] like Figure 1 and Figure 6 As shown, in this embodiment, the driving component 3 is a bent pin, which includes a vertical section 31 and an inclined section 32 connected from top to bottom. The vertical section 31 is fixedly installed on the upper mold 6, and the inclined section 32 passes through the slide block 1 and the lower mold 7. During mold opening, by means of the relative separation movement between the upper mold 6 and the lower mold 7, the vertical mold opening force of the mold is converted into a driving force along the first direction through the cooperation of the inclined section 32 and the slide block 1. In other embodiments, the driving component 3 is a cylinder, which is connected to the slide block 1 to drive the slide block 1 to move along the first direction during or after mold opening.

[0050] Furthermore, in this embodiment, the lower mold 7 is provided with a limiting member 75 for limiting the movement distance of the slide block 1 along the first direction. For example... Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the limiting member 75 includes a limiting block 751, a pull rod 752, and an elastic member 753. The limiting block 751 is mounted on the lower mold 7, the pull rod 752 extends along a first direction, passes through the limiting block 751, and is mounted on the slide block 1. The elastic member 753 is fitted onto the pull rod 752. In this embodiment, the elastic member 753 is a spring; in other embodiments, the elastic member 753 is a polyurethane elastomer.

[0051] Regarding slide 2. Slide 2 is guided and slidably mounted on slide 1, and its sliding direction is at a preset angle to the first direction, so as to generate displacement in the second direction when it moves with slide 1.

[0052] like Figure 1 and Figure 6 As shown, in this embodiment, the slide 1 is provided with an obtuse angle guide rail 11, and the slide 2 is slidably assembled on the obtuse angle guide rail 11. The obtuse angle guide structure makes the sliding direction of the slide 2 different from the first direction of the slide 1, so that the slide 2 generates an independent second direction displacement when it moves with the slide 1, thereby realizing the motion decomposition of the two-stage sliding.

[0053] Specifically, in this embodiment, a sliding guide block 23 is installed on the bottom surface of the slide block 2, and the sliding guide block 23 is used to slide in contact with the inclined guide rail 11.

[0054] like Figure 1As shown, in this embodiment, a guide block 74 is also fixed on the lower mold 7, and a guide groove 22 is correspondingly provided on the slide block 2. The guide block 74 slides in conjunction with the guide groove 22, further providing precise guidance for the movement of the slide block 2 along the second direction and avoiding sliding deviation. In this embodiment, guide grooves 22 are provided on both the front and rear sides of the slide block 2. Correspondingly, two guide blocks 74 are provided on the lower mold 7, and the two guide blocks 74 are respectively located in the two guide grooves 22.

[0055] In addition, such as Figure 1 and Figure 5 As shown, in this embodiment, a slider core puller 8 is slidably assembled on the slide block 2. A slider insert 4 for inverting inside the molded product 5 is installed on the slider core puller 8. The slider core puller 8 drives the slider insert 4 to slide on the slide block 2. The sliding direction of the slider insert 4 is at a preset angle to both the first direction and the second direction, so as to generate a third-direction displacement when it moves with the slide block 2.

[0056] Specifically, such as Figure 1 As shown, in this embodiment, the slide block 22 is provided with a slide rail 21 extending in the fourth direction, and the lower mold 7 is provided with a slide rail 73 extending in the third direction. The slider insert 4 for molding the inner undercut of the product 5 is simultaneously slidably installed on the slide rail 21 and the slide rail 73. When the slide block 22 moves in the second direction, its top surface moves relative to the slider insert 4 in the fourth direction to disengage from the slider insert 4. During this process, the slider insert 4 can move independently in the third direction. The third direction is at a preset angle to both the first direction and the second direction to form a three-dimensional demolding direction that can match the tilted undercut of the inner space of the product 5, thereby adapting to the demolding requirements of special undercuts.

[0057] The working principle of the double-slanted sliding block demolding mechanism provided by this invention is as follows: During mold opening, the upper mold 6 separates from the lower mold 7. The driving component 3, fixed to the upper mold 6, converts the vertical mold opening force into a horizontal driving force through the cooperation of its inclined section 32 with the slide block 1, driving the slide block 1 to slide in the first direction (horizontal) along the guide rail 72 on the lower mold 7. When the slide block 1 moves, the obtuse-angled guide rail 11 on it forces the slide block 2 to slide in the second direction, which is at an obtuse angle to the first direction, thus achieving two-stage motion decomposition. At the same time, the guide block 74 on the lower mold 7 cooperates with the guide groove 22 on the slide block 2 to ensure that the slide block 2 slides smoothly and accurately. When the slide block 2 moves to the point of disengaging from the slider insert 4, the constraint of the slide block 2 on the slider insert 4 is released. Under its own gravity, the slider insert 4 automatically slides out along the third-direction slide rail 73, thus exiting the product 5 undercut along the third direction, which is at a preset angle to both the first and second directions, achieving a composite demolding action that perfectly matches the inclination angle of the undercut space. When the mold is closed, the elastic element 753 on the limiting element 75 provides an auxiliary reset force for the slide block 1, and all components reset in an orderly manner.

[0058] Embodiments of the mold provided by this invention: As shown in the figure, the mold includes an upper mold, a lower mold, and a double-sloping sliding block demolding mechanism. The double-sloping sliding block demolding mechanism has the same structure as the double-sloping sliding block demolding mechanism described above, and will not be repeated here.

[0059] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "back," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification and should not be understood or interpreted as limiting the present invention.

[0060] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A double-slanted sliding block demolding mechanism, characterized in that, Includes slide one, slide two, and drive components; The slide block is slidably mounted on the lower mold; The driving component is connected to the first slide block and is used to drive the first slide block to reciprocate along a first direction; the second slide block is guided and slidably mounted on the first slide block, and its sliding direction is at a preset angle with the first direction, so as to generate displacement in a second direction when it moves with the first slide block; the second slide block is slidably mounted with a slider insert for inverting the inner side of the molded product, and the sliding direction of the slider insert is at a preset angle with both the first direction and the second direction, so as to generate displacement in a third direction when it moves with the second slide block; When the mold is opened, the driving component drives the first slide to slide, which in turn drives the second slide to slide, thereby causing the slider insert to move along the third direction and exit from the undercut inside the product.

2. The double-slanted sliding block demolding mechanism according to claim 1, characterized in that, The driving component is a bent pin, which includes a vertical section and an inclined section connected from top to bottom. The vertical section is fixedly installed on the upper mold, and the inclined section passes through the slide block and the lower mold to drive the slide block to move along the first direction when the mold is opened.

3. The double-slanted sliding block demolding mechanism according to claim 1 or 2, characterized in that, The lower mold is provided with a base plate and a guide rail in sequence along the first direction. The base plate is located below the first slide to support the first slide and the second slide. The guide rail is connected to the base plate to provide guidance for the sliding of the first slide along the first direction.

4. The double-slanted sliding block demolding mechanism according to claim 1 or 2, characterized in that, The first slide is provided with an inclined guide rail, and the angle between the inclination direction of the inclined guide rail and the first direction is an obtuse angle. The second slide is slidably assembled on the inclined guide rail.

5. The double-slanted sliding block demolding mechanism according to claim 1 or 2, characterized in that, The top surface of the second slide block is provided with a slide rail extending along the fourth direction. The lower mold is also equipped with a slide rail extending along the third direction. The slider insert is slidably mounted on the slide rail and the slide rail. When the second slide block moves along the second direction, its top surface moves relative to the slider insert along the fourth direction to disengage from the slider insert. The slider insert then moves along the slide rail along the third direction to detach from the product, thereby achieving product demolding.

6. The double-slanted sliding block demolding mechanism according to claim 1 or 2, characterized in that, A guide block is fixedly installed on the lower mold, and a guide groove is provided on the slide block 2 for sliding assembly of the guide block, so as to provide guidance for the movement of the slide block 2 in the second direction by sliding the guide block in the guide groove.

7. The double-slanted sliding block demolding mechanism according to claim 1 or 2, characterized in that, The lower mold is provided with a limiting member to limit the movement distance of the slide block along the first direction.

8. The double-slanted sliding block demolding mechanism according to claim 7, characterized in that, The limiting component includes a limiting block, a pull rod, and an elastic element. The limiting block is installed on the lower mold, the pull rod extends along the first direction, passes through the limiting block, and is installed on the slide block. The elastic element is fitted onto the pull rod.

9. The double-slanted sliding block demolding mechanism according to claim 1 or 2, characterized in that, A wear-resistant component is provided between the lower mold and the slide block.

10. A mold, comprising an upper mold and a lower mold, characterized in that, It also includes the double-slanted sliding block demolding mechanism as described in any one of claims 1 to 9.

Images