Die wedge side-pressing core-pulling structure
By coordinating the guide block and guide groove of the guide seat and slider, limiting the slider and mold guide rail, and compensating the wear gap with adjustable wear-resistant gaskets, the problems of unstable and offset slider movement in the mold's oblique wedge side core pulling structure are solved, thereby improving the molding accuracy and service life of the mold.
Patent Information
- Application Number
- CN202511033138.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-10-03
AI Technical Summary
The existing mold wedge side core pulling structure is prone to wear due to the rigid contact between the wedge and the slider, resulting in increased fit clearance, unstable slider movement, inaccurate core pulling, and the slider easily deviating and getting stuck, affecting product molding quality and mold life.
The guide block and guide groove matching structure between the guide seat and the slider, the limit matching between the bottom of the slider and the mold guide rail, the adjustable wear-resistant gasket to compensate for the wear gap, and the inclined sliding surface design of the inclined wedge block and the connecting seat ensure the stable driving and guiding accuracy of the slider.
It improves the stability and guidance of the core pulling process, reduces the jamming and deviation of the slider, enhances the wear resistance of the structure, and improves the molding accuracy and service life of the mold.
Smart Images
Figure CN120735256A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of molds, in particular to a mold oblique wedge side pressure core pulling structure. Background Art
[0002] In the manufacturing process of plastic products, especially those with complex shapes and internal structures, side core pulling mechanisms are often required to facilitate demolding. These mechanisms effectively address molding issues with undercuts, grooves, and other structures, ensuring surface quality and dimensional accuracy. Traditional side core pulling mechanisms primarily consist of a slider, guide rails, and a drive mechanism. These components work together to achieve lateral movement during mold opening, releasing undercuts from the product.
[0003] Currently, the common mold inclined wedge side core pulling structure mostly uses a fixed-angle inclined wedge block and a slider to cooperate. The mold opening action drives the inclined wedge block to push the slider to complete the lateral core pulling. However, this structure has certain limitations in practical applications. Since the contact surface between the inclined wedge and the slider is rigid contact, after the mold has been running for a long time, it is easy for the fitting clearance to increase due to wear, thereby causing problems such as unstable slider movement and inadequate core pulling. In addition, during the mold closing process, the slider is often subjected to greater lateral pressure, and the traditional structure lacks an effective limiting and guiding mechanism, which can easily cause the slider to deviate or even get stuck, affecting the normal operation of the mold. At the same time, when the mold is used in high-precision or high-pressure situations, the existing inclined wedge side core pulling structure is difficult to ensure the synchronization and stability of the core pulling action, which can easily lead to defects such as flash and deformation in the product, thereby affecting the yield rate and mold life. Summary of the Invention
[0004] The purpose of the present invention is to provide a mold side pressure core pulling structure with an inclined wedge to solve the problems raised in the above background technology that the inclined wedge and the slider in the current mold side core pulling structure are prone to wear due to rigid contact, the increase in fitting clearance leads to unstable core pulling, the slider is prone to deviation and jamming, the core pulling action is asynchronous, and the product molding quality and mold life are affected.
[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a mold inclined wedge side pressure core pulling structure, comprising an inclined wedge block, a slider, a guide seat, a connecting seat and a mold guide rail, the inclined wedge block is fixedly installed on the movable mold part of the mold, the slider is slidably arranged in the slide groove of the fixed mold part of the mold through the guide seat, the connecting seat is fixed to one side of the slider, and is provided with an inclined sliding surface that cooperates with the inclined wedge block, and a matching structure consisting of a guide block and a guide groove is also provided between the guide seat and the slider, which is used to provide a guide limit during the core pulling process, the bottom of the slider is provided with a sliding groove that cooperates with the mold guide rail, and an adjustable wear-resistant gasket is provided inside the guide seat to compensate for the wear gap between the inclined wedge block and the connecting seat.
[0006] Preferably, the guide seat is an L-shaped structure, the vertical section of which is fixedly connected to the slider, and the horizontal section is embedded in the sliding groove of the fixed mold and fixed by screws.
[0007] Preferably, the guide block is in a T-shaped structure, and the guide groove is provided on the side of the slider and matches the shape of the guide block.
[0008] Preferably, the sliding groove at the bottom of the slider is a bilaterally symmetrical structure and matches the convex cross-section of the mold guide rail to form a limiting guide fit.
[0009] Preferably, the wear-resistant gasket is a multi-layer metal composite structure, and the wear-resistant gasket is installed in the installation groove of the guide seat through an adjusting bolt.
[0010] Preferably, the sliding surface of the inclined wedge block is a structure with an adjustable inclination angle, the angle range of which is 15° to 30°, and the inclined wedge block is fixed to the movable mold by a locking screw.
[0011] Preferably, a core pulling head is provided at the front end of the slider, and the connecting end of the core pulling head is connected to the slider through a threaded structure.
[0012] Preferably, the guide groove is provided on a side surface of the slider and extends along the movement direction of the slider, and the inner wall of the guide groove is provided with a wear-resistant coating.
[0013] Preferably, the mold guide rail is an integral T-shaped guide rail, which is provided with a plurality of ball grooves.
[0014] Preferably, the inclined sliding surface of the connecting seat is provided with anti-slip lines, and the anti-slip lines are evenly distributed along the sliding direction.
[0015] Compared with the prior art, the present invention has the following beneficial effects: the mold's inclined wedge side pressure core pulling structure improves the stability and guidance of the core pulling process, effectively reduces slider jamming and offset, and enhances the structure's wear resistance and adaptability, thereby improving the mold's molding accuracy and service life. This structure achieves stable drive of the slider during the mold opening process through the design of the inclined sliding surface between the inclined wedge block and the connecting seat. The matching structure of the guide block and the guide groove further enhances the guidance accuracy of the slider movement and avoids offset. The sliding groove at the bottom of the slider and the limited matching of the mold guide rail improve sliding smoothness. The adjustable wear-resistant gasket can compensate for the gap caused by wear in real time, extending the mold's service life and improving production stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of a mold oblique wedge side pressure core pulling structure of the present invention;
[0017] Figure 2This is a side view structural diagram of the connection between the slider and the guide seat of a mold inclined wedge side pressure core pulling structure of the present invention;
[0018] Figure 3 This is a schematic diagram of the partial structure of the connection between the connecting seat and the guide seat of the mold inclined wedge side pressure core pulling structure of the present invention;
[0019] Figure 4 This is a schematic diagram of the top view of the connection between the slider and the guide seat of the mold inclined wedge side pressure core pulling structure of the present invention;
[0020] Figure 5 This is a schematic diagram of the mold guide rail structure of a mold inclined wedge side pressure core pulling structure of the present invention.
[0021] In the figure: 1. Oblique wedge; 2. Slider; 3. Guide seat; 4. Connecting seat; 5. Guide block; 6. Guide groove; 7. Mold guide rail; 8. Wear-resistant gasket; 9. Adjusting bolt; 10. Locking screw; 11. Core pulling head; 12. Ball groove. DETAILED DESCRIPTION
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] See also Figure 1-5The present invention provides a technical solution: a mold inclined wedge side pressure core pulling structure, including an inclined wedge block 1, a slider 2, a guide seat 3, a connecting seat 4 and a mold guide rail 7. The inclined wedge block 1 is fixedly installed on the movable mold part of the mold, and the slider 2 is slidably set in the slide groove of the fixed mold part of the mold through the guide seat 3. The connecting seat 4 is fixed to one side of the slider 2, and is provided with an inclined sliding surface that matches the inclined wedge block 1. A matching structure consisting of a guide block 5 and a guide groove 6 is further provided between the guide seat 3 and the slider 2 to provide a guide limit during the core pulling process. A sliding groove that matches the mold guide rail 7 is provided at the bottom of the slider 2, and an adjustable wear-resistant gasket 8 is provided inside the guide seat 3 to compensate for the wear gap between the inclined wedge block 1 and the connecting seat 4. The inclined wedge block 1 of this structure moves with the movable mold part of the mold in the mold opening During the process, it moves downward, and its inclined sliding surface contacts the corresponding surface on the connecting seat 4 and slides relatively, thereby pushing the slider 2 to slide outward along the direction set by the guide seat 3 to realize the lateral core pulling action. In this process, the guide seat 3 and the slider 2 are provided with precise guide limit by the matching structure of the guide block 5 and the guide groove 6 to prevent the slider 2 from deflecting or getting stuck. At the same time, the sliding groove at the bottom of the slider 2 cooperates with the mold guide rail 7 to further enhance the sliding stability and ensure the synchronization and accuracy of the core pulling action. The guide seat 3 can compensate for the wear gap between the inclined wedge block 1 and the connecting seat 4 due to long-term operation in real time through the internal adjustable wear-resistant gasket 8, thereby avoiding the problem of core pulling not being in place due to loose fitting, thereby effectively solving the problem of rigid connection between the inclined wedge and the slider in the prior art. The problems of unstable slider movement, inaccurate core pulling, and excessive lateral pressure when the mold is closed caused by contact wear, such as offset or even jamming, are improved. The reliability of mold operation and molding accuracy are improved. The guide seat 3 is an L-shaped structure, the vertical section of which is fixedly connected to the slider 2, and the horizontal section is embedded in the slide groove of the mold fixed die and fixed by screws. This structure ensures the stability of the guide seat 3 when sliding on the slider 2, and has good installation rigidity and adjustment convenience, which is convenient for assembly and later maintenance. The guide block 5 is a T-shaped structure, and the guide block 5 is symmetrically welded and fixed on the inner walls of the two side parts of the guide seat 3, and the guide groove 6 is arranged on the side of the slider 2 and matches the shape of the guide block 5. This structure can effectively improve the guiding accuracy and the ability to resist lateral force, and ensure that the slider 2 is stable during the core pulling process. The slider 2 slides stably along the predetermined trajectory to prevent deviation or jamming, thereby enhancing the operational reliability and guiding stability of the overall structure. The sliding groove at the bottom of the slider 2 is a bilaterally symmetrical structure and matches the convex cross-section of the mold guide rail 7 to form a limited guiding fit. This structure not only improves the guiding accuracy and stability of the slider 2 during movement, but also effectively enhances its ability to resist lateral forces, preventing deviation or shaking during sliding, thereby ensuring the smoothness of the core pulling action and repeated positioning accuracy. The wear-resistant gasket 8 is a multi-layer metal composite structure, and the wear-resistant gasket 8 is installed in the mounting groove of the guide seat 3 through the adjusting bolt 9. The adjusting bolt 9 is connected to the four corners of the wear-resistant gasket 8 through a threaded structure. This structure not only improves the wear resistance between the guide seat 3 and the slider 2,The dynamic compensation of the wear gap is also achieved by adjusting the bolt 9, which effectively extends the service life of the mold and improves the stability and accuracy of the core pulling action. The sliding surface of the inclined wedge block 1 is an adjustable tilt angle structure with an angle range of 15°-30°, and the inclined wedge block 1 is fixed to the mold movable mold by a locking screw 10. This structure enables the inclined wedge block 1 to flexibly adjust the driving angle according to different mold requirements and adapt to a variety of core pulling strokes and force conditions. At the same time, the locking screw 10 is used to achieve firm positioning to ensure that the inclined wedge block 1 does not loosen or shift during operation, thereby improving the stability and applicability of the mold operation. A core pulling head 11 is provided at the front end of the slider 2, and the connecting end of the core pulling head 11 is connected to the slider 2 through a threaded structure. This structure facilitates the rapid installation and disassembly of the core pulling head 11, while ensuring its firm connection during the core pulling process. The core pulling heads 11 of different shapes or sizes can be flexibly replaced according to different product requirements, thereby improving the versatility and maintenance efficiency of the mold. The guide groove 6 is provided on the side of the slider 2 and along the movement direction of the slider 2. The guide groove 6 is extended, and the inner wall of the guide groove 6 is provided with a wear-resistant coating. This structure not only ensures the guiding accuracy and movement smoothness of the guide block 5 during the sliding process, but also effectively reduces friction and wear through the wear-resistant coating, prolongs the service life of the guide structure, and improves the overall operation stability and reliability of the mold. The mold guide rail 7 is an integral T-shaped guide rail with multiple ball grooves 12. This structure ensures the guiding accuracy and load-bearing capacity of the slider 2 through the cooperation of the T-shaped guide rail and the sliding groove at the bottom of the slider 2. At the same time, the setting of the ball groove 12 can accommodate balls to achieve rolling friction guidance, significantly reducing sliding resistance and improving the smoothness of the sliding and operation stability of the slider 2. The inclined sliding surface of the connecting seat 4 is provided with anti-skid patterns, and the anti-skid patterns are evenly distributed along the sliding direction. This structure effectively increases the friction between the inclined wedge block 1 and the connecting seat 4 through the anti-skid patterns, prevents slipping or displacement deviation during relative sliding, ensures the movement stability and transmission efficiency of the slider 2 during the core pulling process, thereby improving the synchronization of the mold action and the molding reliability.
[0024] Working principle: When using the inclined wedge side pressure core pulling structure of the mold, first, during the mold opening process, the inclined wedge block 1 moves downward with the movable mold part of the mold, and its inclined sliding surface contacts and slides relatively with the corresponding surface of the connecting seat 4, pushing the slider 2 to slide outward along the direction set by the guide seat 3. During the sliding process, the slider 2 realizes the guide limit through the cooperation of the guide groove 6 on its side and the guide block 5. At the same time, the sliding groove at the bottom of the slider 2 forms a limit guide cooperation with the mold guide rail 7 to ensure smooth sliding. The core pulling head 11 at the front end of the slider 2 moves synchronously to complete the core pulling action. While the slider 2 slides, the adjustable wear-resistant gasket 8 inside the guide seat 3 is compensated for the gap through the adjusting bolt 9 to maintain a close fit between the inclined wedge block 1 and the connecting seat 4 to avoid loose fit due to wear. When the mold is closed, the inclined wedge block 1 moves in the opposite direction, and the slider 2 is reset along the original path with the cooperation of the guide structure, thereby completing a series of tasks.
[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A mold inclined wedge side pressure core pulling structure, comprising an inclined wedge block (1), a slider (2), a guide seat (3), a connecting seat (4) and a mold guide rail (7), characterized in that: The inclined wedge block (1) is fixedly mounted on the movable mold part of the mold, the slider (2) is slidably arranged in the slide groove of the fixed mold part of the mold through the guide seat (3), the connecting seat (4) is fixed to one side of the slider (2), and is provided with an inclined sliding surface that matches the inclined wedge block (1), and a matching structure consisting of a guide block (5) and a guide groove (6) is further provided between the guide seat (3) and the slider (2) for providing a guide limit during the core pulling process, the bottom of the slider (2) is provided with a sliding groove that matches the mold guide rail (7), and an adjustable wear-resistant gasket (8) is provided inside the guide seat (3) for compensating for the wear gap between the inclined wedge block (1) and the connecting seat (4).
2. A mold wedge side pressure core pulling structure according to claim 1, characterized in that: The guide seat (3) is an L-shaped structure, the vertical section of which is fixedly connected to the slider (2), and the horizontal section is embedded in the slide groove of the mold fixed mold and fixed by screws.
3. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: The guide block (5) has a T-shaped structure, and the guide groove (6) is arranged on the side of the slider (2) and matches the shape of the guide block (5).
4. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: The sliding groove at the bottom of the slider (2) is a bilaterally symmetrical structure and matches the convex cross-section of the mold guide rail (7) to form a limiting guide fit.
5. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: The wear-resistant gasket (8) is a multi-layer metal composite structure, and the wear-resistant gasket (8) is installed in the installation groove of the guide seat (3) through the adjustment bolt (9).
6. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: The sliding surface of the inclined wedge block (1) is a structure with an adjustable inclination angle, and the angle range is 15°-30°, and the inclined wedge block (1) is fixed to the movable mold by a locking screw (10).
7. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: A core pulling head (11) is provided at the front end of the slider (2), and the connecting end of the core pulling head (11) is connected to the slider (2) via a threaded structure.
8. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: The guide groove (6) is provided on the side of the slider (2) and extends along the movement direction of the slider (2), and the inner wall of the guide groove (6) is provided with a wear-resistant coating.
9. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: The mold guide rail (7) is an integral T-shaped guide rail, on which a plurality of ball grooves (12) are provided.
10. The mold inclined wedge side pressure core pulling structure according to claim 1, characterized in that: The inclined sliding surface of the connecting seat (4) is provided with anti-skid patterns, and the anti-skid patterns are evenly distributed along the sliding direction.