A double anti-slip block retreat structure of an oil cylinder core-pulling of a die-casting die
Patent Information
- Application Number
- CN202611072511.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-20
- Publication Date
- 2026-08-21
AI Technical Summary
[0003]然而，在实际压铸生产过程中，高温高压料液会对滑块成型面产生强大的侧向冲击力，若油缸在压射及保压过程中因系统内泄或控制逻辑缺陷而无法持续提供对抗侧向力的补压保持力时，或当楔紧块与滑块座配合斜面在反复摩擦与冲击下产生磨损间隙时，滑块均容易出现退位情况，进而影响产品质量
在合模前，驱动油缸驱使滑块本体和滑块座到位，在动模和定模合模后，楔紧块与滑块座斜面抵接配合，实现第一重防退；而二次止退块插入配合槽中，由于二次止退块能够承受滑块后退的推力，形成刚性物理阻挡，实现第二重防退，从而有助于使滑块本体抵御极高的反向冲击力，减少因油压不足等原因导致的滑块本体后退情况，一定程度上保证产品质量；
Smart Images
Figure CN122605951A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of die casting mold technology, and in particular to a double anti-sliding slide block retraction structure for core pulling of a die casting mold hydraulic cylinder. Background Technology
[0002] In die casting, for parts with lateral concave-convex structures, holes, etc., die casting molds with a slider core-pulling mechanism are typically used to form and demold the cavity. Specifically, a die casting mold with a slider core-pulling mechanism mainly includes a moving mold, a fixed mold, a wedge block, a slider, a slider seat, and a hydraulic cylinder. The slider is connected to the slider seat, and the slider and slider are slidably mounted on the moving mold via the hydraulic cylinder. The end of the slider away from the slider seat has a forming structure for forming a complete product shape together with the cavity. The wedge block is mounted on the fixed mold and engages with the inclined surface of the slider seat. In use, the hydraulic cylinder pushes the slider and slider seat into place, then the moving mold and fixed mold close, and the wedge block limits the position of the slider seat.
[0003] However, in the actual die casting production process, the high temperature and high pressure liquid material will generate a strong lateral impact force on the forming surface of the slider. If the oil cylinder cannot continuously provide the pressure-replenishing and holding force to resist the lateral force during the injection and pressure holding process due to internal leakage of the system or defects in the control logic, or when the wedge block and the inclined surface of the slider seat produce wear gaps under repeated friction and impact, the slider is prone to disengagement, which will affect the product quality. Summary of the Invention
[0004] To help reduce the backward movement of the slider body due to wear of the wedge block, insufficient oil pressure, etc., and to ensure product quality to a certain extent, this application provides a double anti-slider backward movement structure for core pulling of the hydraulic cylinder of a die casting mold.
[0005] The technical solution provided in this application for a double anti-slip block retraction structure for core pulling of a die-casting mold hydraulic cylinder is as follows: A double anti-slip block retraction structure for core pulling of a die-casting mold hydraulic cylinder includes: The slider seat is used to slide on the moving mold; A slider body, which is connected to a slider seat; A driving cylinder is used to drive the slider seat and the slider body to move toward or away from the cavity; A wedge block, which is slidably mounted on the fixed mold to abut against the inclined surface of the slider seat; A secondary anti-reverse block is provided on the fixed mold, and the slider body is provided with a mating groove that is inserted and engaged with the secondary anti-reverse block. A compensation mechanism is provided on the fixed mold to push the wedge block against the inclined surface of the slider seat.
[0006] Preferably, the wedge block has a first limiting inclined surface, the slider seat has a first mating inclined surface, the first limiting inclined surface is used to abut against the first mating inclined surface, the secondary anti-reverse block has a second limiting inclined surface, the inner wall of the mating groove has a second mating inclined surface, the second limiting inclined surface is used to abut against the second mating inclined surface, and the angle between the first limiting inclined surface and the plane where the fixed mold is located is greater than the angle between the second limiting inclined surface and the plane where the fixed mold is located.
[0007] Preferably, the angle between the first limiting inclined surface and the plane where the fixed mold is located is 65°-70°.
[0008] Preferably, the wedge block includes a base block and a wear-resistant plate. The base block is slidably mounted on the fixed mold, and the wear-resistant plate is mounted on the base block. The first limiting inclined surface is located on the wear-resistant plate.
[0009] Preferably, the cross-section of the secondary anti-reverse block is V-shaped or trapezoidal.
[0010] Preferably, the compensation mechanism includes a compensation spring disposed between the wedge block and the fixed mold, wherein the sliding direction of the wedge block on the fixed mold is perpendicular to the sliding direction of the slider seat, and the compensation spring is used to push the wedge block to engage with the inclined surface of the slider seat.
[0011] Preferably, the compensation mechanism further includes a fixed tooth segment, a movable tooth segment, and an adjustment component. The fixed tooth segment is connected to the wedge block, the movable tooth segment is slidably disposed on the fixed mold, and the movable tooth segment is used to engage or disengage with the fixed tooth segment. The adjustment component is used to drive the movable tooth segment to move toward the fixed tooth segment to engage with the fixed tooth segment after the moving mold and the fixed mold are closed.
[0012] Preferably, the adjustment assembly includes a first trigger body, a second trigger body, an elastic element, and a transmission element. The first and second trigger bodies are both slidably mounted on the fixed mold. The sliding directions of the first and second trigger bodies are parallel to the mold closing direction of the moving mold and the fixed mold. The first and second trigger bodies are both used to slide relative to the fixed mold after abutting against the slider seat. The elastic element is used to push the first trigger body to move towards the direction closer to the slider seat. The transmission element is used to drive the moving tooth segment to move towards the direction closer to the fixed tooth segment when the first and second trigger bodies slide synchronously towards the direction closer to the fixed mold.
[0013] Preferably, the elastic element includes a first spring, which is disposed between the fixed mold and the first trigger body.
[0014] Preferably, the transmission component includes a movable body, a connecting body, a mating body, a second spring, and a third spring. The movable body is slidably disposed within the fixed mold, and the sliding direction of the movable body is perpendicular to the sliding direction of the wedge block. The second spring is used to pull the movable body to slide away from the wedge block. The second trigger body is provided with a first arc surface, and the movable body is provided with a second arc surface. The first arc surface is used to slide against the second arc surface to push the movable body to move towards the wedge block. The connecting body is slidably disposed within the fixed mold and is located between the movable body and the wedge block. The third spring... A spring is disposed between the moving body and the connecting body. The third spring is used to push the connecting body to slide towards the wedge block. The moving tooth segment is connected to the connecting body. The mating body is disposed on the connecting body. The first trigger body has a through hole for the mating body to pass through. When the second spring is in its natural state, the end of the mating body near the wedge block abuts against the side of the first trigger body away from the wedge block, and the moving tooth segment disengages from the fixed tooth segment. When the moving mold and the fixed mold are closed, the second spring is in a stretched state, the mating body extends into the through hole, and the moving tooth segment meshes with the fixed tooth segment.
[0015] In summary, this application includes the following beneficial technical effects: Before mold closing, the drive cylinder drives the slider body and slider seat into position. After the moving mold and fixed mold close, the wedge block abuts against the inclined surface of the slider seat to achieve the first layer of anti-reverse. The secondary anti-reverse block is inserted into the mating groove. Since the secondary anti-reverse block can withstand the thrust of the slider retraction, it forms a rigid physical block to achieve the second layer of anti-reverse. This helps the slider body resist extremely high reverse impact force and reduces the slider body retraction caused by insufficient oil pressure, thus ensuring product quality to a certain extent. In response to the problem that the inclined surface between the slider seat and the wedge block wears after long-term use of the die-casting mold, resulting in loose mold clamping, this application introduces a compensation mechanism to help compensate for the wear, ensure the abutment and fit between the wedge block and the slider seat, thereby reducing the sliding body's backward movement caused by wear of the wedge block and other reasons, and further improving the anti-backward effect of the sliding body. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.
[0017] Figure 2 This is a schematic diagram of the overall structure of the slider seat and slider body in Embodiment 1 of this application.
[0018] Figure 3 This is a schematic diagram of the fixed mold structure in Embodiment 1 of this application.
[0019] Figure 4 This is a partial structural cross-sectional view of the fixed mold in Embodiment 1 of this application.
[0020] Figure 5 This is a partial structural cross-sectional view of the fixed mold in Embodiment 2 of this application.
[0021] Figure 6 This is a partial structural schematic diagram of Embodiment 2 of this application.
[0022] Explanation of reference numerals in the attached drawings: 1. Slider seat; 2. Moving mold; 3. Slider body; 4. Drive cylinder; 5. Wedge block; 51. Base block; 52. Wear-resistant plate; 6. Secondary anti-reverse block; 7. First limiting inclined surface; 8. First mating inclined surface; 9. Second limiting inclined surface; 10. Second mating inclined surface; 11. Fixed mold; 12. Compensating spring; 13. Fixed tooth segment; 14. Moving tooth segment; 15. First trigger body; 16. Second trigger body; 17. First spring; 18. Moving body; 19. Connecting body; 20. Mating body; 21. Second spring; 22. Third spring; 23. First arc surface; 24. Second arc surface; 25. Through hole; 26. Adjusting cylinder; 27. Mounting groove; 28. Sliding hole; 29. Anti-detachment block; 30. Mounting cavity; 31. Mating groove. Detailed Implementation
[0023] The following combination Figures 1-6 This application will be described in further detail.
[0024] For ease of understanding of the present invention, please refer to Figure 1 Traditional die-casting molds typically include a moving mold 2 and a fixed mold 11, which are closed to form a cavity. The dual anti-slider retraction structure of the present invention is used in die-casting molds to reduce the retraction of the slider body 3 due to wear of the wedge block, insufficient oil pressure, etc.
[0025] Example 1:
[0026] This application discloses a double anti-sliding block retraction structure for core pulling of a die-casting mold hydraulic cylinder. (Refer to...) Figure 1 , Figure 2 and Figure 3The double anti-slider retraction structure for core pulling in die-casting molds includes a slider seat 1, a slider body 3, a drive cylinder 4, a wedge block 5, a secondary anti-retraction block 6, and a compensation mechanism. The slider seat 1 is slidably mounted on the moving mold 2, and its sliding direction is perpendicular to the mold closing direction of the moving mold 2 and the fixed mold 11. The slider body 3 is fixedly connected to the slider seat 1. Specifically, the slider body 3 is located on the side of the slider seat 1 closest to the cavity, and the end of the slider body 3 closest to the cavity has a forming structure for forming lateral concave-convex structures, holes, etc. The drive cylinder 4 is fixedly mounted on the moving mold 2, and the output end of the slider seat 1 is fixedly connected to the drive cylinder 4. The drive cylinder 4 is used to drive the slider seat 1 and the slider body 3 to move towards or away from the cavity to complete the core pulling and resetting actions. In this embodiment, slider seats 1, slider bodies 3, and drive cylinders 4 are provided on opposite sides of the moving mold 2. In other embodiments, the number and position of the slider bodies 3 can be arranged according to actual product needs. To achieve the mold closing and fitting of the moving mold 2 and the fixed mold 11, the fixed mold 11 has a groove that fits into the slider body 3 and the slider seat 1.
[0027] Reference Figure 1 , Figure 2 and Figure 3 To achieve the first layer of anti-reverse function, the wedge block 5 is slidably mounted on the fixed mold 11. In the mold-closed state, the wedge block 5 abuts against the inclined surface of the slider seat 1, using the wedge clamping principle to resist the lateral force of the molten material on the slider body 3 and slider seat 1 during die casting. A compensation mechanism is mounted on the fixed mold 11 to push the wedge block 5 into contact with the inclined surface of the slider seat 1. Furthermore, to satisfy the compensation of the wedge block 5, when the wedge block 5 abuts against the inclined surface of the slider seat 1, there is a certain gap between the side of the wedge block 5 closest to the moving mold 2 and the slider seat 1.
[0028] Reference Figure 2 and Figure 3 To achieve a second layer of anti-reverse function and improve mold-locking accuracy, the secondary anti-reverse block 6 is fixedly mounted on the fixed mold 11 and located on the side of the wedge block 5 near the cavity. Correspondingly, the slider body 3 is provided with a mating groove 31 for inserting and engaging with the secondary anti-reverse block 6. When the mold is closed, the secondary anti-reverse block 6 is precisely inserted into the mating groove 31, which not only plays a secondary role in preventing the slider from retracting, but also provides high-precision guidance and positioning for the slider body 3, preventing forced mold closing when the slider body 3 is not fully in place, thereby protecting the mold.
[0029] Before mold closing, the drive cylinder 4 drives the slider body 3 and slider seat 1 into position. After the moving mold 2 and fixed mold 11 close, the wedge block 5 abuts against the inclined surface of the slider seat 1, achieving the first layer of anti-backlash. The secondary anti-backlash block 6 is inserted into the mating groove 31. The secondary anti-backlash block 6 can withstand the thrust of the slider body 3 backward, forming a rigid physical barrier, achieving the second layer of anti-backlash. This helps to resist extremely high material impact force and reduce the backward movement of the slider body 3 due to insufficient oil pressure, thus ensuring product quality to a certain extent. Regarding the problem of wear on the mating inclined surface between the slider seat 1 and the wedge block 5 after long-term use of the die-casting mold, leading to loose mold locking, this application uses a compensation mechanism to help compensate for the wear, ensure the overlap of the wedge block 5 and the slider seat 1, reduce the backward movement of the slider body 3 due to wear of the wedge block 5, and further improve the anti-backlash effect.
[0030] Reference Figure 2 and Figure 3 Specifically, to achieve the inclined surface fit between the wedge block 5 and the slider seat 1, a first limiting inclined surface 7 is machined on the wedge block 5. The distance from the first limiting inclined surface 7 to the slider seat 1 decreases in the direction away from the cavity. A first mating inclined surface 8 is machined on the slider seat 1, and the first limiting inclined surface 7 is used to abut against the first mating inclined surface 8. The angle between the first limiting inclined surface 7 and the plane where the fixed mold 11 is located is 65°-70°. This angle design allows the wedge block 5 to effectively withstand lateral forces.
[0031] Reference Figure 2 and Figure 3 To achieve the inclined surface fit between the secondary anti-reverse block 6 and the mating groove 31, the secondary anti-reverse block 6 has a second limiting inclined surface 9, and the inner wall of the mating groove 31 has a second mating inclined surface 10. The second limiting inclined surface 9 is used to abut against the second mating inclined surface 10. The fit clearance between the wedge block 5 and the slider seat 1, and between the secondary anti-reverse block 6 and the slider body 3, is controlled within 0.03-0.05mm. Furthermore, the angle between the first limiting inclined surface 7 and the plane where the fixed mold 11 is located is greater than the angle between the second limiting inclined surface 9 and the plane where the fixed mold 11 is located. Through this design, the secondary anti-reverse block 6 can not only effectively resist lateral impact forces, but also play a role in eliminating gaps, micro-anti-reverse, and precise positioning, and the force distribution between the two is more reasonable. Among them, the second limiting inclined surface 9 is located on the side of the secondary anti-reverse block 6 away from the slider seat 1, and the cross-section of the secondary anti-reverse block 6 is V-shaped or trapezoidal, which facilitates its smooth introduction into the mating groove 31 during mold closing and plays a guiding role. In this embodiment, the cross-section of the secondary stop block 6 is a right trapezoid, so that the side of the secondary stop block 6 near the slider seat 1 is perpendicular to the moving direction of the slider seat 1, which helps to ensure the limiting effect.
[0032] Reference Figure 2 and Figure 3Furthermore, to ensure the structural strength of the anti-slip block structure, the hardness requirement of the slider body 3 is HRC45-50, that is, the Rockwell hardness range is between 45 and 50; the hardness requirement of the wedge block 5 is HRC40-45, that is, the Rockwell hardness range is between 40 and 45; and the hardness requirement of the secondary anti-slip block 6 is HV800-1000, that is, the surface hardness of the material is between 800 and 1000 Vickers hardness units.
[0033] Reference Figure 2 and Figure 4 To reduce wear on the wedge block 5 during long-term use, the wedge block 5 includes a base block 51 and a wear-resistant plate 52. The base block 51 is slidably mounted on the fixed mold 11. The fixed mold 11 has an installation groove 27 for sliding cooperation with the base block 51. The wear-resistant plate 52 is fixed on the base block 51. The first limiting inclined surface 7 is located on the wear-resistant plate 52. The sliding direction of the wedge block 5 on the fixed mold 11 is perpendicular to the sliding direction of the slider seat 1. Under the limiting action of the installation groove 27, the base block 51 can only move in the direction perpendicular to the sliding direction of the slider seat 1, and will not move in the direction parallel to the sliding direction of the slider seat 1.
[0034] Reference Figure 2 and Figure 4 To compensate for wear by engaging the wedge block 5 with the inclined surface of the slider seat 1, a compensation mechanism includes a compensation spring 12. The compensation spring 12 is positioned between the base block 51 and the bottom wall of the mounting groove 27. The compensation spring 12 is used to push the wedge block 5 into contact with the inclined surface of the slider seat 1. Specifically, the extension / retraction direction of the compensation spring 12 is parallel to the sliding direction of the wedge block 5. The compensation spring 12 can be a traditional spring or a butterfly spring assembly. When the moving mold 2 and the fixed mold 11 are in the closed state, the compensation spring 12 is in a compressed state, thus achieving automatic compensation of the wedge block 5.
[0035] Reference Figure 2 and Figure 4 In order to achieve relative fixation between the wedge block 5 and the fixed mold 11 after mold closing, and to prevent the wedge block 5 from moving under strong thrust, the compensation mechanism also includes a fixed tooth segment 13, a movable tooth segment 14, and an adjustment component. The fixed tooth segment 13 is fixedly connected to the base block 51 of the wedge block 5. The movable tooth segment 14 corresponds one-to-one with the fixed tooth segment 13. The movable tooth segment 14 is slidably disposed in the mounting groove 27 of the fixed mold 11. The sliding direction of the movable tooth segment 14 is parallel to the moving direction of the slider seat 1. Furthermore, the sliding direction of the movable tooth segment 14 is perpendicular to the moving direction of the base block 51. The length directions of both the fixed tooth segment 13 and the movable tooth segment 14 are parallel to the moving direction of the base block 51. The movable tooth segment 14 is used to engage or disengage with the fixed tooth segment 13. The adjustment component is used to drive the movable tooth segment 14 to move toward the corresponding fixed tooth segment 13 to engage with the corresponding fixed tooth segment 13 when the moving mold 2 and the fixed mold 11 are closed.
[0036] Reference Figure 4 In order to facilitate the movement of the moving tooth segment 14 toward the direction of the fixed tooth segment 13 when the moving mold 2 and the fixed mold 11 are closed, in this embodiment of the application, the adjustment component includes an adjustment cylinder 26, which is installed on the fixed mold 11, and the moving tooth segment 14 is fixedly connected to the output end of the adjustment cylinder 26.
[0037] The implementation principle of Embodiment 1 of this application is as follows: Before mold closing, the driving cylinder 4 drives the slider body 3 and slider seat 1 to their positions. At this time, the moving tooth segment 14 is disengaged from the fixed tooth segment 13. Then, after the moving mold 2 and the fixed mold 11 are closed, the wedge block 5 abuts against the inclined surface of the slider seat 1. At this time, the compensation spring 12 is in a compressed state to realize automatic compensation for wear. At the same time, the adjusting cylinder 26 is activated to drive the moving tooth segment 14 to move towards the corresponding fixed tooth segment 13 until it meshes with the fixed tooth segment 13. The wedge block 5 achieves the first layer of anti-retraction. After mold closing, the secondary anti-retraction block 6 is inserted into the mating groove 31. The secondary anti-retraction block 6 can withstand the thrust of the slider body 3 retraction, forming a rigid physical block to achieve the second layer of anti-retraction. The double anti-retraction helps to resist the extremely high impact force of the liquid material, thereby reducing the situation of the slider body 3 retraction caused by the wear of the wedge block 5, insufficient oil pressure, etc., and ensuring product quality.
[0038] After the moving mold 2 and the fixed mold 11 are demolded, the driving cylinder 4 drives the slider body 3 and the slider seat 1 to retract for core pulling, and the adjusting cylinder 26 drives the moving tooth segment 14 to disengage from the corresponding fixed tooth segment 13 for easy use next time.
[0039] Example 2:
[0040] Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the adjustment component includes a first trigger body 15, a second trigger body 16, an elastic element, and a transmission element. The first trigger body 15 and the second trigger body 16 are both used to slide through the fixed mold 11. The first trigger body 15 and the second trigger body 16 are arranged sequentially along the direction from the base block 51 to the cavity. The sliding direction of the first trigger body 15 and the second trigger body 16 is parallel to the mold closing direction of the moving mold 2 and the fixed mold 11. The first trigger body 15 and the second trigger body 16 are both used to slide after abutting against the slider seat 1. Correspondingly, the fixed mold 11 is provided with sliding holes 28 that slide with the first trigger body 15 and the second trigger body 16 respectively. The fixed mold 11 is provided with a mounting cavity 30. The sliding holes 28 and the mounting grooves 27 are both connected to the mounting cavity 30.
[0041] Reference Figure 5 and Figure 6Specifically, both the first trigger body 15 and the second trigger body 16 are provided with anti-detachment blocks 29, which slide in conjunction with the inner wall of the sliding hole 28 to prevent the first trigger body 15 and the second trigger body 16 from falling off the fixed mold 11. An elastic element is provided in the mounting cavity 30, which is used to push the first trigger body 15 toward the direction closer to the slider seat 1. A transmission element is provided in the mounting cavity 30, which is used to drive the moving tooth segment 14 toward the direction closer to the fixed tooth segment 13 when the first trigger body 15 and the second trigger body 16 slide toward the direction closer to the fixed mold 11, thereby facilitating the movement of the moving tooth segment 14 by using the pressure of mold closing without the need for an external drive source.
[0042] Reference Figure 5 and Figure 6 The elastic element includes a first spring 17, which is disposed between the mounting cavity 30 of the fixed mold 11 and the first trigger body 15. The extension direction of the first spring 17 is parallel to the sliding direction of the first trigger body 15. The first spring 17 is used to push the first trigger body 15 to slide towards the moving mold 2. When the mold is closed, the first trigger body 15 abuts against the surface of the slider seat 1, at which time the first spring 17 is in a compressed state.
[0043] Reference Figure 5 and Figure 6 Furthermore, to facilitate the movement of the moving tooth segment 14 towards the direction of the fixed tooth segment 13 when the first trigger body 15 and the second trigger body 16 slide towards the direction of the fixed mold 11, the transmission component includes a moving body 18, a connecting body 19, a mating body 20, a second spring 21, and a third spring 22. The moving body 18 is slidably disposed within the mounting cavity 30 of the fixed mold 11. The sliding direction of the moving body 18 is perpendicular to the sliding direction of the wedge block 5. Specifically, the sliding direction of the moving body 18 is parallel to the sliding direction of the moving tooth segment 14. The moving body 18 is guided to slide against the inner wall of the mounting cavity 30 by a protrusion and a groove, ensuring that the moving direction of the moving body 18 is unique. The second spring 21 is disposed between the moving body 18 and the inner wall of the mounting cavity 30. The second spring 21 is located on the side of the moving body 18 away from the corresponding wedge block 5, and its extension / retraction direction is parallel to the moving direction of the moving body 18. The second spring 21 is used to pull the moving body 18 to slide away from the wedge block 5.
[0044] Reference Figure 5 and Figure 6To enable the movable body 18 to move toward the corresponding wedge block 5 during mold closing, the second trigger body 16 is provided with a first arc surface 23 at one end located in the mounting cavity 30. The distance from the first arc surface 23 to the corresponding wedge block 5 increases in the direction away from the slider seat 1. The side of the movable body 18 away from the corresponding wedge block 5 is provided with a second arc surface 24. The first arc surface 23 is used to slide against the second arc surface 24 to push the movable body 18 toward the wedge block 5. When in the demolding state, the second spring 21 is in the natural state, and the second trigger body 16 is in the state of extending out of the corresponding sliding hole 28.
[0045] Reference Figure 5 and Figure 6 The connecting body 19 is slidably disposed in the mounting cavity 30 of the fixed mold 11. The sliding direction of the connecting body 19 is parallel to the sliding direction of the moving body 18. Specifically, the connecting body 19 and the inner wall of the mounting cavity 30 are guided by a guide block and a guide groove to make the moving direction of the connecting body 19 unique. The connecting body 19 is located between the moving body 18 and the wedge block 5. The third spring 22 is disposed between the moving body 18 and the connecting body 19. The extension direction of the third spring 22 is parallel to the sliding direction of the connecting body 19. The third spring 22 is used to push the connecting body 19 to slide towards the wedge block 5. Further, the moving tooth segment 14 is fixedly connected to the connecting body 19 so that the moving tooth segment 14 is driven to move by the movement of the connecting body 19. The elastic force of the third spring 22 is greater than the sum of the moving friction force between the connecting body 19 and the inner wall of the mounting cavity 30 and the sliding friction force between the inner wall of the through hole 25 in the first trigger body 15 and the mating body 20. The elastic force of the third spring 22 is less than the elastic force of the second spring 21.
[0046] Reference Figure 5 and Figure 6 The mating body 20 is fixed on the connecting body 19. The mating body 20 is L-shaped. The first trigger body 15 has a through hole 25 for the mating body 20 to pass through. When in the demolding state, the end of the mating body 20 near the wedge block 5 abuts against the side of the first trigger body 15 away from the wedge block 5. The first spring 17 is in the natural state, and the moving tooth segment 14 is disengaged from the fixed tooth segment 13. When the moving mold 2 and the fixed mold 11 are closed, the first spring 17 is in the compressed state, the second spring 21 is in the stretched state, the mating body 20 is aligned with the through hole 25, and the moving tooth segment 14 is engaged with the fixed tooth segment 13.
[0047] The implementation principle of Embodiment 2 of this application is as follows: When the moving mold 2 and the fixed mold 11 are in the demolding state, the moving body 18 is in a state away from the corresponding wedge block 5 under the action of the second spring 21. Through the cooperation of the first arc surface 23 and the second arc surface 24, the second trigger body 16 extends out of the corresponding sliding hole 28. Under the action of the third spring 22, the connecting body 19 will be in a state away from the corresponding wedge block 5, so that the moving tooth segment 14 is disengaged from the fixed tooth segment 13. At this time, the mating body 20 will not block the first spring 17 from pushing the first trigger body 15, so that the first trigger body 15 extends out of the corresponding sliding hole 28, so that the mating body 20 and the through hole 25 are misaligned, thereby providing the possibility for wear compensation between the wedge block 5 and the slider seat 1.
[0048] When the driving cylinder 4 drives the slider seat 1 and the slider body 3 into position, during the mold closing process of the moving mold 2 and the fixed mold 11, the first trigger body 15 and the second trigger body 16 slide relative to the fixed mold 11 under the abutment of the slider seat 1. The wedge block 5 gradually abuts and engages with the slider seat 1. Since the first trigger body 15 abuts with the engaging body 20, the sliding of the connecting body 19 and the moving tooth segment 14 is restricted. During the relative sliding process of the second trigger body 16 and the fixed mold 11, the moving body 18 is driven to slide towards the connecting body 19 through the engagement of the first arc surface 23 and the second arc surface 24. Since the connecting body 19 cannot move under the limitation of the first trigger body 15 at this time, the third spring 22 gradually compresses and stores energy. At this time, the connecting body 19 has a tendency to move towards the corresponding wedge block 5.
[0049] At the moment when the moving mold 2 and the fixed mold 11 complete the mold closing, the mating body 20 aligns with the through hole 25. Under the thrust of the compressed third spring 22, the connecting body 19, the mating body 20, and the moving tooth segment 14 move toward the direction close to the corresponding wedge block 5, so that the mating body 20 passes through the through hole 25, and the moving tooth segment 14 meshes with the fixed tooth segment 13, thereby fixing the wedge block 5. During the molding process, since the second trigger body 16 maintains contact with the moving body 18, the meshing effect of the moving tooth segment 14 and the fixed tooth segment 13 is guaranteed, so that the wedge block 5 is not prone to unnecessary movement after automatic compensation.
[0050] After the moving mold 2 is demolded from the fixed mold 11, since the first trigger body 15 and the second trigger body 16 are not blocked by the slider seat 1, under the pulling force of the second spring 21, the moving body 18 is pulled to move away from the corresponding wedge block 5. The moving body 18 is reset by abutting the second trigger body 16 through the cooperation of the first arc surface 23 and the second arc surface 24. As the moving body 18 moves, the third spring 22 pulls the connecting body 19, the mating body 20 and the moving tooth segment 14 to move away from the corresponding wedge block 5, so that the moving tooth segment 14 is disengaged from the fixed tooth segment 13. After the mating body 20 moves out of the through hole 25, under the pushing force of the first spring 17, the first trigger body 15 moves towards the slider seat 1, restoring the misalignment between the through hole 25 and the mating body 20 on the first trigger body 15, realizing the reset of each component, and providing convenience for the next mold closing.
[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A double anti-sliding block retraction structure for core pulling of a die-casting mold cylinder, characterized in that, include: A slider seat (1) is used to slide on the moving mold (2); The slider body (3) is connected to the slider seat (1); Drive cylinder (4), which is used to drive the slider seat (1) and the slider body (3) to move toward or away from the cavity; A wedge block (5) is used to slide on the fixed mold (11) to abut against the inclined surface of the slider seat (1); Secondary anti-reverse block (6), the secondary anti-reverse block (6) is used to be set on the fixed mold (11), and the slider body (3) is provided with a mating groove (31) that is inserted and matched with the secondary anti-reverse block (6); The compensation mechanism is provided on the fixed mold (11) to push the wedge block (5) to abut against the inclined surface of the slider seat (1).
2. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 1, characterized in that: The wedge block (5) has a first limiting inclined surface (7), the slider seat (1) has a first mating inclined surface (8), the first limiting inclined surface (7) is used to abut against the first mating inclined surface (8), the secondary anti-reverse block (6) has a second limiting inclined surface (9), the inner wall of the mating groove (31) has a second mating inclined surface (10), the second limiting inclined surface (9) is used to abut against the second mating inclined surface (10), and the angle between the first limiting inclined surface (7) and the plane where the fixed mold (11) is located is greater than the angle between the second limiting inclined surface (9) and the plane where the fixed mold (11) is located.
3. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 2, characterized in that: The angle between the first limiting inclined surface (7) and the plane where the fixed mold (11) is located is 65°-70°.
4. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 2, characterized in that: The wedge block (5) includes a base block (51) and a wear-resistant plate (52). The base block (51) is slidably mounted on the fixed mold (11), and the wear-resistant plate (52) is mounted on the base block (51). The first limiting inclined surface (7) is located on the wear-resistant plate (52).
5. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 1, characterized in that: The cross-section of the secondary anti-reverse block (6) is V-shaped or trapezoidal.
6. A double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to any one of claims 1-5, characterized in that: The compensation mechanism includes a compensation spring (12) disposed between the wedge block (5) and the fixed mold (11). The sliding direction of the wedge block (5) on the fixed mold (11) is perpendicular to the sliding direction of the slider seat (1). The compensation spring (12) is used to push the wedge block (5) to engage with the inclined surface of the slider seat (1).
7. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 6, characterized in that: The compensation mechanism further includes a fixed tooth segment (13), a movable tooth segment (14), and an adjustment component. The fixed tooth segment (13) is connected to the wedge block (5). The movable tooth segment (14) is slidably mounted on the fixed mold (11). The movable tooth segment (14) is used to engage or disengage with the fixed tooth segment (13). The adjustment component is used to drive the movable tooth segment (14) to move toward the fixed tooth segment (13) to engage with the fixed tooth segment (13) after the moving mold (2) and the fixed mold (11) are closed.
8. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 7, characterized in that: The adjustment assembly includes a first trigger body (15), a second trigger body (16), an elastic element, and a transmission element. The first trigger body (15) and the second trigger body (16) are both used to slide on the fixed mold (11). The sliding direction of the first trigger body (15) and the second trigger body (16) is parallel to the mold closing direction of the moving mold (2) and the fixed mold (11). The first trigger body (15) and the second trigger body (16) are both used to slide relative to the fixed mold (11) after abutting against the slider seat (1). The elastic element is used to push the first trigger body (15) to move toward the direction closer to the slider seat (1). The transmission element is used to drive the moving tooth segment (14) to move toward the direction closer to the fixed tooth segment (13) when the first trigger body (15) and the second trigger body (16) slide synchronously toward the direction closer to the fixed mold (11).
9. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 8, characterized in that: The elastic element includes a first spring (17) which is disposed between the fixed mold (11) and the first trigger body (15).
10. The double anti-slip block retraction structure for core pulling of a die-casting mold cylinder according to claim 8, characterized in that: The transmission component includes a movable body (18), a connecting body (19), a mating body (20), a second spring (21), and a third spring (22). The movable body (18) is slidably disposed within the fixed mold (11), and the sliding direction of the movable body (18) is perpendicular to the sliding direction of the wedge block (5). The second spring (21) is used to pull the movable body (18) to slide away from the wedge block (5). A first arc surface (23) is provided on the second trigger body (16), and a second arc surface (24) is provided on the movable body (18). The first arc surface (23) is used to slide against the second arc surface (24) to push the movable body (18) to move towards the wedge block (5). The connecting body (19) is slidably disposed within the fixed mold (11) and is located between the movable body (18) and the wedge block (5). The third spring (22) is provided with... Between the moving body (18) and the connecting body (19), the third spring (22) is used to push the connecting body (19) to slide towards the wedge block (5). The moving tooth segment (14) is connected to the connecting body (19). The mating body (20) is set on the connecting body (19). The first trigger body (15) has a through hole (25) for the mating body (20) to pass through. When the second spring (21) is in its natural state, the end of the mating body (20) near the wedge block (5) abuts against the side of the first trigger body (15) away from the wedge block (5), and the moving tooth segment (14) disengages from the fixed tooth segment (13). When the moving mold (2) and the fixed mold (11) are closed, the second spring (21) is in a stretched state, the mating body (20) extends into the through hole (25), and the moving tooth segment (14) meshes with the fixed tooth segment (13).