Structure of slider retracting slider on slider
By designing an inward-retracting slider structure and using actuators to drive the slider to move along different axial directions, the problem of multi-directional undercut demolding that conventional sliders and angled ejectors cannot solve is solved, achieving a highly efficient product demolding effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN HUIJING PLASTIC PROD CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-24
AI Technical Summary
Conventional sliders and angled ejectors cannot effectively complete the demolding process of products with undercuts in two directions.
Design a structure for an inwardly retracting slider on a slider, including an actuator and a base. The actuator drives the first slider to move along the X-axis, and the second slider moves synchronously along the Y-axis, realizing two movements in different directions to complete the inverting of the product in two directions.
This technology enables the slider structure to complete the undercutting in both directions in one go during the mold closing and opening processes, thereby improving the demolding efficiency and quality of the product.
Smart Images

Figure CN224545202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold demolding technology, specifically to a structure for an inwardly retracting slider on a slider. Background Technology
[0002] Mold closing and demolding are two crucial steps in the manufacturing process of injection molding and die casting, affecting production efficiency, molding quality, and mold lifespan. Mold closing involves aligning and pressing the two parts of the mold (usually the upper and lower molds) together to form a complete mold cavity, enabling injection molding or other molding operations. Demolding refers to removing the molded product from the mold after the molding process. A successful demolding process is equally important for ensuring product quality and mold lifespan.
[0003] Depending on the product being manufactured, the mold closing and demolding mechanisms need to be adjusted accordingly to achieve the desired effect. Figure 2 Taking the product shown as an example, it has undercuts in two directions, so conventional sliders and angled ejectors cannot achieve the demolding effect. Utility Model Content
[0004] The purpose of this invention is to provide a structure for an inwardly retracting slider on a slider, which addresses the technical problem that conventional sliders and angled ejectors cannot solve for demolding of products with two-way undercutting.
[0005] This utility model is implemented as follows: a structure for a sliding block with an inwardly retracting slider includes an actuator assembled on an upper mold and a base assembled on a lower mold. The base is provided with a traveling structure, and the actuator can contact the traveling structure and drive the traveling structure to travel displacement on the base. The traveling structure includes a first slider that can move horizontally on the base. The front end of the first slider is provided with a contact part that contacts the actuator, and the back of the first slider is provided with a second slider that can move vertically on the base. When the actuator drives the first slider to slide along the X-axis direction through the contact part, the second slider will move synchronously along the Y-axis direction.
[0006] Furthermore, the base includes a base plate and two sets of side plates assembled on the upper left and right sides of the base plate. The first slider moves along the X-axis direction on the base plate between the left and right side plates. Each of the left and right side plates has a vertical notch on its back, which connects the upper direction and the inner direction towards the other side plate. The notch is for the second slider to move along the Y-axis direction on the left and right side plates.
[0007] Furthermore, the base plate is also provided with a perforation for the actuator to pass through.
[0008] Furthermore, the front of the first slider is provided with a concave inclined groove, and the inner wall of the first slider at the inclined groove is provided with an elastic block that is exposed in the inclined groove and can extend and retract along the Y-axis. The front end of the elastic block is an arc shape that can be retracted by the force applied by the actuator, and the back end of the elastic block is in hard contact with the actuator.
[0009] Furthermore, the first slider is provided with a slot to accommodate the extension and retraction of the elastic block, and the back of the first slider is provided with a spring and an abutment plate assembled on the slot and in contact with the other end of the spring.
[0010] Furthermore, the connection between the back surface of the first slider and the lower end surface of the second slider is an inclined slope connection, and the back surface of the first slider and the lower end surface of the second slider are provided with dovetail guide rails and slider components that cooperate with each other.
[0011] Furthermore, the two sides of the front end of the second slider are provided with inserts that are accommodated in a second shaped movement that is notched.
[0012] Furthermore, one of the side plates is provided with a sliding track, and the upper side of the first slider is provided with a sliding block placed on the sliding track.
[0013] Furthermore, it also includes a manufactured product, which has a first undercut part that matches the first slider and a second undercut part that matches the second slider.
[0014] Furthermore, the actuator includes a tapered guide post for contacting the inner wall of the inclined groove on the elastic block and the first slider; at the same time, the front face of the first slider is set as an inclined surface, and the actuator also includes a shovel base that contacts the inclined surface.
[0015] Compared with the prior art, the beneficial effects of this utility model are: The structure of the sliding block with an inward sliding block is mainly used in the mold closing and opening process to drive the actuator to contact the corresponding sliding block. The sliding block achieves two movements in different directions. This design allows for the simultaneous setting of two corresponding undercuts when producing the required products. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the contact structure between the present invention and the molded product; Figure 2 This is a schematic diagram of the molded product structure; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the walking structure on the base; Figure 5 This is a schematic diagram of the elastic block structure on the first slider; Figure 6 This is a schematic diagram of the initial position of the walking structure; Figure 7 This is a schematic diagram of the first action structure; Figure 8 This is a schematic diagram of the second action structure; Figure 9 This is a schematic diagram of the third action structure; Figure 10 This is a schematic diagram of the fourth action structure.
[0017] The labels in the attached figures are as follows: Base-2 Base plate-21, side plate-22, first-shape movement-23, second-shape movement-24, perforation-25, sliding track-26 First slider - 3 Angled groove-31, elastic block-32, slot-33, spring-34, abutment plate-35, dovetail guide rail-36, sliding block-37 Second slider -4 Slider component-41, Insert component-42 Product-5 First inverted section -51, Second inverted section -52 Detailed Implementation
[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0020] refer to Figure 1 , Figure 3 , Figure 4 Figure 5 As shown in the accompanying drawings and specific embodiments, further explanation will be provided below: A structure for a sliding block with an inwardly retracting slider includes an actuator 1 assembled on an upper mold and a base 2 assembled on a lower mold. The base 2 is provided with a traveling structure. The actuator 1 can contact the traveling structure and drive the traveling structure to move on the base 2. The traveling structure includes a first slider 3 that can move horizontally on the base 2. The front end of the first slider 3 is provided with a contact part that contacts the actuator 1. The back of the first slider 3 is provided with a second slider 4 that can move vertically on the base 2. When the actuator 1 drives the first slider 3 to slide along the X-axis direction through the contact part, the second slider 4 will move synchronously along the Y-axis direction.
[0021] This technical solution is mainly designed by the interaction of the actuator 1 and the traveling structure mounted on the base 2. The actuator 1 is located at the lower end of the upper mold, while the base 2 and the traveling structure are located on the lower mold. Therefore, during the mold closing and opening processes, the contact between the actuator 1 and the traveling structure drives the movement of the corresponding slider. The core of this design lies in the fact that the slider includes a first slider 3 and a second slider 4. While the actuator 1 drives the first slider 3 to slide along the X-axis at the contact point, the second slider 4 moves synchronously along the Y-axis. This allows for two movements in different directions at once, ultimately resulting in the injection-molded product 5 having two different undercuts, as shown in the figure. The structural design will be described in detail below. Reference Appendix Figure 3 , Figure 4 , Figure 5 , The design of the traveling structure in the lower mold includes a base 2 and a traveling structure on the base 2. The base 2 includes a base plate 21 and two sets of side plates 22 assembled on the left and right sides of the upper end of the base plate 21. Between the left and right side plates 22 is a first shaped movement 23 for the first slider 3 to move along the X-axis on the base plate 21. Each of the left and right side plates 22 has a vertical notch on its back, which connects the upper direction and the inner direction towards the other side plate 22. The notch is a second shaped movement 24 for the second slider 4 to move along the Y-axis on the left and right side plates 22. The traveling structure specifically includes a first slider 3 that moves horizontally at the first moving position and a slider that moves vertically at the second moving position. The second slider 4 is located on the back of the first slider 3. The connection between the back of the first slider 3 and the lower end face of the second slider 4 is inclined. The back of the first slider 3 and the lower end face of the second slider 4 are provided with dovetail guide rails 36 and slider parts 41 that cooperate with each other. The two sides of the front end of the second slider 4 are provided with inserts 42 that are accommodated in the second shaped movement 24 with a notch shape. The principle is that when the first slider 3 moves back and forth along the X-axis, the inserts 42 in the second shaped movement 24, as well as the dovetail guide rails 36 and slider parts 41, will synchronously drive the second slider 4 to move up and down, completing the displacement of the first slider 3 and the second slider 4 in one go.
[0022] As shown in the figure, in order to stabilize the displacement of the first slider 3, a sliding track 26 is provided on one of the side plates 22, and a sliding block 37 is provided on the upper side of the first slider 3, which is placed on the sliding track 26. That is, when the actuator 1 drives the first slider 3 to move, the upper sliding block 37 also moves synchronously on the sliding track 26.
[0023] Since the upper and lower mold processes involve both mold closing and mold opening, the actuator 1 needs to be able to achieve displacement in the front and rear directions of the first slider 3. Therefore, in this design, the front of the first slider 3 is provided with a concave inclined groove 31. An elastic block 32, protruding from the inclined groove 31 and capable of extending and retracting along the Y-axis, is provided on the inner wall of the first slider 3 at the inclined groove 31. The front end of the elastic block 32 is an arc shape that can be retracted by the actuator 1, and the back end of the elastic block 32 is in hard contact with the actuator 1. Specifically, the first slider 3 is provided with a groove 33 to accommodate the extension and retraction of the elastic block 32. The back of the first slider 3 is provided with a spring 34 and an abutment plate 35 assembled on the groove 33 and in contact with the other end of the spring 34. The principle is as follows: the abutment plate 35 is provided with... The back of the first slider 3 is attached to the abutment and the elastic block 32 by a spring 34 within the groove 33 of the first slider 3, allowing the elastic block 32 to extend and retract within the groove 33. Simultaneously, the surface shape of the elastic block 32 is designed so that its front end is an arc shape that can be retracted by the force exerted by the actuator 1, and the back end of the elastic block 32 is in hard contact with the actuator 1 (specifically, an end-angle setting). The principle is that when the actuator 1 moves down into the inclined groove 31, it first contacts the arc-shaped surface of the elastic block 32, and then enters to contact the inner wall of the first slider 3 in the inclined groove 31. The elastic block 32 will reset and pop out. During the subsequent mold opening process, when the actuator 1 moves up, the hard contact design between the back end of the elastic block 32 and the actuator 1 causes the elastic block 32 to drive the first slider 3 to directly reverse displacement.
[0024] Meanwhile, the base plate 21 is also provided with a through hole 25 for the actuator 1 to pass through. By setting the length of the through hole 25, it is ensured that the actuator 1 completes the downward stroke, thereby completing the stroke of contacting the first slider 3 to make displacement.
[0025] Refer to the attached diagram. Figure 3 , Figure 5 As shown Specifically, the structure of the actuator 1 includes a tapered guide post 11 that contacts the inner wall of the inclined groove 31 on the elastic block 32 and the first slider 3. The tapered guide post 11 is the main driving component, and the displacement of the first slider 3 is achieved by the tapered guide post 11. Simultaneously, the front face of the first slider 3 is sloped, and the actuator 1 also includes a shovel base 12 that contacts the sloped surface. The contact between the shovel base 12 and the sloped surface serves a guiding function, ensuring the correct direction of movement of the first slider 3 and providing stability during displacement.
[0026] Referring to the attached diagram, the final product 5 is as follows: Figure 2 As shown, it includes a first undercut part 51 that matches the first slider 3 and a second undercut part 52 that matches the second slider 4. When the first slider 3 and the second slider 4 are in conjunction, the undercut shape will be presented in the mold closing process.
[0027] In summary, the working principle of this utility model is as follows: Initial position, such as Figure 6 As shown, like Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, (2) The first action, such as Figure 7 As shown, during the process of the upper and lower molds gradually approaching each other and closing, when the tapered guide post 11 on the upper mold extends into the inclined groove 31, it will first contact the elastic block 32 exposed in the inclined groove 31 and which can extend and retract along the Y-axis. When the tapered guide post 11 moves, it will squeeze the elastic block 32, causing the elastic block 32 to gradually shrink inward. At this time, the first slider 3 is in a stationary state. (3) The second action is that when the tapered guide post 11 extends into contact with the inner wall of the first slider 3, the elastic block 32 is elastically reset and returns to the exposed part of the inclined groove 31. (4) In the third action, when the tapered guide post 11 continues to move down, it will exert force on the first slider 3 by contacting the inner wall. At this time, the first slider 3 moves along the back, and synchronously, the second slider 4 on the back of the first slider 3 will move up in the second shape movement 24. Finally, when the upper mold and lower mold are closed, the first slider 3 and the second slider 4 are in the corresponding injection molding operation position. (5) Fourth action: When the injection molding is completed and the product 5 is formed, the mold opening operation is performed. At this time, the first slider 3 moves along the front end, the second slider 4 moves along the lower end, and the tapered guide post 11 moves along the upper end. Finally, the mold opening is completed and the product returns to the initial position.
[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A structure for a slider that carries an inwardly retracting slider, characterized in that, It includes an actuator (1) assembled on the upper mold and a base (2) assembled on the lower mold. The base (2) is provided with a walking structure. The actuator (1) can contact the walking structure and drive the walking structure to move on the base (2). The walking structure includes a first slider (3) that can move horizontally on the base (2), and the front end of the first slider (3) is provided with a contact part that contacts the actuator (1); the back of the first slider (3) is provided with a second slider (4) that can move vertically on the base (2); During the process of the actuator (1) driving the first slider (3) to slide along the X-axis direction, the second slider (4) will move synchronously along the Y-axis direction.
2. The structure of a slider with an inwardly retracting slider according to claim 1, characterized in that, The base (2) includes a base plate (21) and two sets of side plates (22) assembled on the left and right sides of the upper end of the base plate (21). Between the left and right side plates (22) is a first slider (3) that moves along the X-axis on the base plate (21) in a first-shape movement (23). Both the left and right side plates (22) have a vertical notch on their backs, which connects the upper direction with the inner direction of the other side plate (22); the notch is for the second slider (4) to move along the Y-axis on the left and right side plates (22) in a second shape (24).
3. The structure of a slider with an inwardly retracting slider according to claim 2, characterized in that, The base plate (21) is also provided with a through hole (25) for the actuator (1) to pass through.
4. The structure of an inwardly retracting slider on a slider according to claim 1, characterized in that, The first slider (3) has a concave inclined groove (31) on its front side. The inner wall of the first slider (3) at the inclined groove (31) has an elastic block (32) that protrudes from the inclined groove (31) and can extend and retract along the Y-axis. The front end of the elastic block (32) is an arc shape that can be retracted by the force applied by the actuator (1). The back end of the elastic block (32) is in hard contact with the actuator (1).
5. The structure of a slider with an inwardly retracting slider according to claim 4, characterized in that, The first slider (3) is provided with a groove (33) for accommodating the extension and retraction of the elastic block (32). The back of the first slider (3) is provided with a spring (34) and an abutment plate (35) assembled on the groove (33) and in contact with the other end of the spring (34).
6. The structure of a slider with an inwardly retracting slider according to claim 1, characterized in that, The connection between the back of the first slider (3) and the lower end face of the second slider (4) is inclined, and the back of the first slider (3) and the lower end face of the second slider (4) are provided with dovetail guide rails (36) and slider parts (41) that cooperate with each other.
7. The structure of a slider with an inwardly retracting slider according to claim 1, characterized in that, The two sides of the front end of the second slider (4) are provided with inserts (42) that are accommodated in the second notch-shaped slot (24).
8. The structure of a slider with an inwardly retracting slider according to claim 1, characterized in that, One of the side plates (22) is provided with a sliding track (26), and the upper side of the first slider (3) is provided with a sliding block (37) placed on the sliding track (26).
9. The structure of a slider with an inwardly retracting slider according to claim 1, characterized in that, It also includes a manufactured product (5), which has a first undercut part (51) that matches the first slider (3) and a second undercut part (52) that matches the second slider (4).
10. The structure of an inwardly retracting slider on a slider according to claim 4, characterized in that, The actuator (1) includes a tapered guide post (11) for contacting the inner wall of the inclined groove (31) on the elastic block (32) and the first slider (3); Meanwhile, the front face of the first slider (3) is set as an inclined surface, and the actuator (1) also includes a shovel base (12) that contacts the inclined surface.