A demolding mechanism for a part rotating shaft hole
By designing a self-locking guide mechanism and a limit block, the problems of complex mold structure and misaligned pin jamming during the demolding process of the component shaft hole were solved, achieving precise pin positioning and stable demolding, thus improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI GOOD FAITH ICEST
- Filing Date
- 2025-04-25
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, during the demolding process of the component shaft hole, the mold structure is complex and the pin misalignment or jamming is prone to occur, which affects the product molding quality and production efficiency.
The design employs a self-locking guide mechanism and limit block. Through the cooperation between the moving component and the fixed seat, the pin is accurately positioned and stable during the demolding process, simplifying the mold structure and achieving automated demolding.
It improved product molding quality, simplified mold structure, increased production efficiency, and reduced manufacturing costs.
Smart Images
Figure CN224309492U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of component processing, and in particular to a demolding mechanism for a component shaft hole. Background Technology
[0002] In the molding process, parts with pivot holes, such as gears, hinges, and movable connectors, often face significant difficulties during demolding due to their special structures. Pivot holes are typically cylindrical through holes or blind holes, and during molding, they rely on cores or pins in the mold to form the internal cavity.
[0003] In existing technologies, to solve the forming problem of shaft holes, a common approach is to use independent pins in conjunction with a mold. One common method is to insert two independent pins into the shaft holes to be processed, and then install and demold the pins by opening and closing the mold. Another method is to fix the pins to a moving part of the mold, and then move the mold to demold the pins. Another commonly used technique is to incorporate a complex linkage mechanism within the mold to achieve simultaneous demolding of multiple pins. However, these methods generally result in complex and unstable mold structures.
[0004] Figure 1 This is a component. The diagram shows the location of the pivot hole that needs to be formed by the mold to form the inner cavity. That is, two symmetrical pivot holes need to be opened on the inner side wall of the same mounting groove. Using independently controlled pins will make the overall structure of the mold too complicated, and the pins are prone to misalignment or jamming during demolding, which will affect the molding quality and production efficiency of the product. Utility Model Content
[0005] To address the problem that using two opposing pins to process two symmetrical pivot holes in the same mounting slot of a component results in an overly complex production mold structure, this application provides a demolding mechanism for pivot holes in a component.
[0006] This application provides a demolding mechanism for a component shaft hole, which adopts the following technical solution:
[0007] A demolding mechanism for a component pivot hole includes a fixed base, a movable component, and a hole machining component. The hole machining component includes a machining plate and a trapezoidal sliding block. A pin for machining the pivot hole is fixedly installed at one end of the machining plate, and a limiting block is fixedly installed at the other end of the machining plate. The machining plate is slidably mounted on the side of the trapezoidal sliding block. A self-locking guide mechanism is provided at the mounting points of the machining plate and the trapezoidal sliding block. A sliding groove is provided on the fixed base, and the movable component is slidably mounted in the sliding groove. A demolding opening for the hole machining component to pass through is provided on the side wall of the sliding groove. The trapezoidal sliding block is fixedly mounted on the movable component through the demolding opening. The limiting block is slidably connected to the fixed base at a position located outside the demolding opening, and the length of the limiting block is greater than or equal to the length of the pin.
[0008] By adopting the above technical solution, a self-locking guide mechanism is set between the processing plate and the trapezoidal sliding block, ensuring the positioning accuracy of the pin during the molding process, avoiding pin misalignment or jamming, and improving the molding quality of the product. By sliding the moving component in the sliding groove of the fixed seat, and opening a demolding port on the side wall of the sliding groove, the moving component slides away from the hole-shaped processing part in the sliding groove, driving the trapezoidal sliding block to move. Under the action of the self-locking guide mechanism and the cooperation of the limiting block and the fixed seat, the processing plate moves towards the trapezoidal sliding block. When the limiting block disengages from the fixed seat, the hole-shaped processing part can pass through the demolding port and completely detach from the component, achieving automation and reliability of the demolding action. The limiting block is slidably connected to the fixed seat at a position on the outer periphery of the demolding port, and the length of the limiting block is greater than or equal to the length of the pin, effectively preventing the pin from deviating from the predetermined trajectory during demolding, further improving the stability of demolding.
[0009] Preferably, a snap-fit block parallel to the corresponding side is fixedly installed on the side where the trapezoidal sliding block is slidably installed with the processing plate, and a snap-fit groove matching the snap-fit block is opened on the side wall where the processing plate and the trapezoidal sliding block are slidably installed, and the snap-fit groove and the snap-fit block cooperate to form a self-locking guide mechanism.
[0010] By adopting the above technical solution, a self-locking guiding mechanism is formed between the processing plate and the trapezoidal sliding block through the cooperation of the locking groove and the locking block. This achieves a stable connection and precise guidance between the two, avoiding the problem of pin misalignment or jamming during demolding and improving the molding quality of the product. At the same time, the introduction of the self-locking guiding mechanism simplifies the overall structure of the mold, improves the reliability of the demolding action, and thus improves production efficiency.
[0011] Preferably, the movable component includes a movable block, a positioning platform is provided on the inner sidewall of the sliding groove along the sliding direction of the movable block, a locking platform is provided on the movable block flush with the positioning platform, a positioning block is fixedly installed on the positioning platform, and the locking platform of the movable block is slidably connected to the positioning block.
[0012] By adopting the above technical solution, the positioning platform and positioning block on the inner wall of the sliding groove restrict the upward movement of the moving block during the sliding process, thereby avoiding jamming or displacement of the demolding of the hole-processed parts, thus improving the overall accuracy of the demolding mechanism.
[0013] Preferably, the movable component further includes a guide rod, the movable block has an oblique hole penetrating the movable block, and one end of the oblique hole at the bottom of the movable block is away from the hole-shaped processing part. The guide rod is slidably installed in the oblique hole. A guide groove is provided in the sliding groove of the fixed seat. One end of the guide rod slides against the guide groove, and the other end of the guide rod is fixedly connected to the upper mold of the component processing mold.
[0014] By adopting the above technical solution, one end of the guide rod is fixed on the upper mold. When the part is processed, the upper mold opens upward and drives the guide rod upward. The guide rod moves upward and drives the sliding block to move away from the hole processing part to achieve demolding. At the same time, after the processing is completed, opening the upper mold can realize the demolding of the rotating shaft hole and the hole processing part. The structure is simple and the demolding efficiency is improved.
[0015] Preferably, a limiting post is fixedly installed on the side of the sliding groove away from the demolding port, and a limiting cavity matching the limiting post is opened on the side of the moving block near the limiting post.
[0016] By adopting the above technical solution, the cooperation between the limiting post and the limiting cavity can effectively limit the position of the moving block in the sliding groove, prevent the moving block from moving excessively during the sliding process, and thus ensure the stability of the demolding mechanism.
[0017] Preferably, a positioning strip is fixedly installed at the bottom of the sliding groove below the moving block, and at least two positioning grooves matching the positioning strip are opened at the bottom of the moving block, and the end face of the positioning strip is provided with a chamfer.
[0018] By adopting the above technical solution, the positioning strip and the positioning groove can fix the position of the moving block in the sliding groove, and the setting of the chamfer can facilitate the sliding of the moving block in the sliding groove, and also make it easy for the positioning strip to be inserted into the positioning groove.
[0019] Preferably, the fixing seat has a limiting platform on the outer periphery of the demolding opening, and the limiting block is slidably connected to the limiting platform.
[0020] By adopting the above technical solution, the limiting platform provides stable sliding support for the limiting block, preventing it from shifting or jamming during demolding, thereby improving the stability of the demolding mechanism. Simultaneously, the cooperation between the limiting block and the limiting platform ensures the precise position of the pin during processing and demolding, effectively preventing reduced accuracy of the pivot hole forming due to limiting block wobbling, thus improving the product's forming quality.
[0021] Preferably, it also includes a demolding cylinder, the piston of which is fixedly connected to the fixed seat, the demolding cylinder is fixedly installed on the lower mold, and the fixed seat is slidably installed in the lower mold.
[0022] By adopting the above technical solution, the demolding of the hole-machined parts and components is achieved by moving the fixed seat through the demolding cylinder.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. By setting up a cooperative structure of moving components, fixed seats and hole machining parts, and utilizing the self-locking guide mechanism between the trapezoidal sliding block and the machining plate, the stability of the pin during the demolding process is effectively improved;
[0025] 2. The design of the limiting block and the fixed seat ensures that the pin remains accurately positioned during demolding, thus improving the molding quality of the product;
[0026] 3. The overall structure of the mold is simplified. The design of the sliding groove and the demolding port enables efficient installation and demolding of the pins, which significantly improves production efficiency and reduces manufacturing costs. Attached Figure Description
[0027] Figure 1 This is a structural schematic diagram of the components in this application;
[0028] Figure 2 This is a schematic diagram illustrating the overall structure in the embodiments of this application;
[0029] Figure 3 This is a schematic diagram illustrating the overall structure in the embodiments of this application;
[0030] Figure 4 This is a schematic diagram of the structure of the fixing base in the embodiment of this application;
[0031] Figure 5 This is a schematic diagram of the structure of the fixing base in the embodiment of this application;
[0032] Figure 6 This is a schematic diagram of the structure of the moving block in an embodiment of this application;
[0033] Figure 7This is a schematic diagram of the installation of the moving mechanism and the fixed base in an embodiment of this application;
[0034] Figure 8 This is a schematic diagram of the installation structure of the moving mechanism and the hole machining mechanism in the embodiments of this application;
[0035] Figure 9 This is a schematic diagram of the hole machining mechanism in the embodiments of this application;
[0036] Figure 10 This is a schematic diagram of the hole machining mechanism in the embodiments of this application;
[0037] Figure 11 This is a schematic diagram of the demolding mechanism in the state of processing parts in the embodiments of this application;
[0038] Figure 12 This is a schematic diagram of the demolding mechanism in an intermediate state during the demolding process in an embodiment of this application.
[0039] Reference numerals in the attached drawings: 1. Fixed base; 11. Sliding groove; 12. Demolding port; 13. Limiting platform; 14. Positioning platform; 15. Positioning block; 16. Guide groove; 17. Positioning strip; 171. Chamfer; 18. Positioning post; 2. Moving component; 21. Moving block; 22. Guide rod; 23. Angled hole; 24. Snap-fit platform; 25. Positioning cavity; 26. Positioning groove; 3. Machined part for hole; 31. Machined plate; 311. Pin; 312. Limiting block; 313. Snap-fit groove; 32. Trapezoidal sliding block; 321. Snap-fit block; 4. Demolding cylinder. Detailed Implementation
[0040] The following is in conjunction with the appendix Figure 2 - Appendix Figure 12 This application will be described in further detail.
[0041] This application discloses a demolding mechanism for a component shaft hole.
[0042] Reference Figure 2 and Figure 3 A demolding mechanism for a component's pivot hole includes a fixed base 1, a movable component 2, a hole-shaped machining part 3, and a demolding cylinder 4. The hole-shaped machining part 3 is fixedly mounted on the movable component 2, and the movable component 2 is slidably mounted on the fixed base 1. The sliding of the movable component 2 on the fixed base 1 drives the movable component 2 to move, thereby realizing the demolding of the hole-shaped machining part 3 from the component. The piston rod of the demolding cylinder 4 is fixedly connected to the fixed base 1, and the demolding cylinder 4 is fixedly mounted on the lower mold of the component processing mold. The fixed base 1 is slidably mounted in the lower mold. After the hole-shaped machining part 3 is separated from the component, the demolding cylinder 4 drives the fixed base 1 and the movable component 2 on the fixed base 1 to separate from the component, thereby realizing the demolding of the component.
[0043] Reference Figure 4 The fixed base 1 has a sliding groove 11, the moving component 2 is slidably installed in the sliding groove 11, and the side wall of the sliding groove 11 has a demolding port 12 for the hole processing part 3 to pass through.
[0044] Reference Figure 5 and Figure 6 A positioning strip 17 is fixedly installed at the bottom of the sliding groove 11 below the moving block 21. At least two positioning grooves 26 matching the positioning strip 17 are provided at the bottom of the moving block 21, and the end face of the positioning strip 17 has a chamfer 171 to facilitate engagement between the positioning groove 26 and the positioning strip 17. In this embodiment, the cooperation between the positioning groove 26 and the positioning strip 17 ensures that the position of the moving block 21 in the sliding groove 11 is relatively fixed. During component processing, the moving block 21 needs to remain stationary. Therefore, the positioning strip 17 is installed at the bottom of the positioning groove 26 below the moving block 21 during component processing, thus ensuring that the position of the moving block 21 in the positioning groove 26 remains fixed during component processing to guarantee component quality. After component processing is completed, after the moving block 21 drives the hole-processed part 3 away from the component, it is necessary to ensure that the moving block 21 remains stable to prevent springback and other damage to the component. Therefore, at least two positioning grooves 26 are provided at the bottom of the moving block 21 to limit the position of the moving block 21 during processing and demolding.
[0045] Reference Figure 7 and Figure 8 The movable component 2 includes a movable block 21 and a guide rod 22. A positioning platform 14 is provided on the inner side wall of the sliding groove 11 along the sliding direction of the movable block 21. A snap-fit platform 24, which is flush with the positioning platform 14, is provided on the side wall of the movable block 21 near the positioning platform 14. A positioning block 15 is fixedly installed on the positioning platform 14. The movable block 21 is slidably connected to the positioning block 15 through the snap-fit platform 24. The positioning block 15 restricts the movable block 21 from moving upward during the sliding process, thus preventing jamming of the demolding of the hole-processed part 3. A slanted hole 23 is provided through the movable block 21, with one end of the slanted hole 23 located at the bottom of the movable block 21 away from the hole-processed part 3. A guide rod 22 is slidably installed in the slanted hole 23. A guide groove 16 is provided at the bottom of the sliding groove 11 on the fixed base 1. One end of the guide rod 22 slides against the guide groove 16, and the other end of the guide rod 22 is fixedly connected to the upper mold of the part processing mold. The upper mold drives the guide rod 22 to move, thereby causing the movable block 21 to slide within the sliding groove 11. A limit post is fixedly installed on the side of the sliding groove 11 away from the demolding port 12. A limiting cavity matching the limit post is provided on the side of the movable block 21 near the limit post. The cooperation between the limit post and the limiting cavity limits the movable block 21 to prevent excessive movement of the movable block 21 and also prevents the guide rod 22 from completely disengaging from the movable block 21.
[0046] Reference Figure 9 The hole-machining component 3 includes a machining plate 31 and a trapezoidal sliding block 32. The machining plate 31 is slidably mounted on the side of the trapezoidal sliding block 32. A snap-fit block 321 parallel to the corresponding side is fixedly mounted on the side of the trapezoidal sliding block and the machining plate 31. A snap-fit groove 313 matching the snap-fit block 321 is opened on the side wall of the machining plate 31 and the trapezoidal sliding block. The cooperation between the snap-fit block 321 and the snap-fit groove 313 forms a self-locking guide mechanism between the trapezoidal sliding block and the machining plate 31. In this embodiment, the self-locking guide mechanism can be a structure of dovetail groove and dovetail tenon, or a structure of T-slot and T-block, etc. A pin 311 for machining to form the cavity of the rotating shaft hole is fixedly mounted on one end of the machining plate 31, and a limit block 312 is fixedly mounted on the other end of the machining plate 31. After the processing plate 31 and the trapezoidal sliding block 32 are installed through the engagement groove 313 and engagement block 321, the trapezoidal sliding block 32 passes through the demolding opening 12 and is fixedly installed on the moving component 2. The limiting block 312 of the processing plate 31 is slidably connected to the fixed seat 1 at the position on the outer periphery of the demolding opening 12, and the length of the limiting block 312 is greater than or equal to the length of the pin 311. This ensures that the limiting block 312 of the processing plate 31 will only detach from the fixed seat 1 and slide out of the demolding opening 12 after the pin 311 has completely exited the pivot hole during demolding, thus ensuring the quality of the parts. The fixed seat 1 is provided with a limiting platform 13 on the outer periphery of the demolding opening 12 for installing the limiting block 312. The limiting block 312 is slidably connected to the limiting platform 13. The opening of the limiting platform 13 limits the position of the limiting block 312 slidingly connected to the fixed seat 1, ensuring a more stable demolding process.
[0047] The implementation principle of this application embodiment is as follows:
[0048] Reference Figure 11 During the part processing, as the upper and lower molds of the part processing mold close, the upper mold moves closer to the lower mold, causing the guide rod 22 to move. Under the limiting effect of the sliding groove 11 at the bottom, the guide rod 22 cooperates with the inclined hole 23 to drive the sliding block to move in the part processing direction. While the moving block 21 slides, it drives the trapezoidal sliding block 32 to move synchronously. Under the action of the trapezoidal sliding block 32, the pin 311 of the processing plate 31 is placed in the processing position, and the limiting block 312 is slidably connected to the limiting platform 13 on the outer periphery of the demolding port 12. At this time, the position of the moving block 21 is relatively fixed by the cooperation of the positioning strip 17 and the positioning groove 26 of the moving block 21 until the part processing is completed.
[0049] Reference Figure 12After the parts are processed, the upper mold moves away from the lower mold, thereby driving the guide rod 22 to move. Under the action of the positioning platform 14 and positioning block 15 on the side wall of the sliding groove 11, the guide rod 22 cooperates with the inclined hole 23 to drive the moving block 21 to move away from the parts. The moving block 21 drives the trapezoidal sliding block 32 to move. Under the action of the self-locking guide mechanism, the trapezoidal sliding block 32 drives the processing plate 31 to move. Under the limiting action of the limiting block 312 and the limiting platform 13, the processing plate 31 can only move in the direction parallel to the rotating shaft hole, that is, it moves closer to the trapezoidal sliding block 32. When the pin 311 completely disengages from the rotating shaft hole, the limiting block 312 slides from the limiting platform 13 into the demolding port 12. Under the action of the self-locking guide ridge mechanism, the trapezoidal sliding block 32 continues to move with the processing plate 31, thereby disengaging from the parts. Under the action of the demolding cylinder 4, the fixed seat 1 and the hole processing part 3 are moved away from the parts to achieve demolding.
[0050] The hole-machining part 3, which is used for machining the pivot hole, is produced and demolded during the closing and opening of the upper and lower molds of the part processing mold. There is no need to set up a separate drive mechanism to demold the pivot hole. The structure is simple, safe, and can ensure that there will be no misalignment or jamming during the demolding process, thereby ensuring the molding quality and production efficiency of the parts.
[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 demolding mechanism for a component shaft hole, characterized in that: The system includes a fixed base (1), a movable component (2), and a hole machining component (3). The hole machining component (3) includes a machining plate (31) and a trapezoidal sliding block (32). One end of the machining plate (31) is fixedly mounted with a pin (311) for machining a rotating shaft hole, and the other end of the machining plate (31) is fixedly mounted with a limit block (312). The machining plate (31) is slidably mounted on the side of the trapezoidal sliding block (32). A self-locking guide mechanism is provided at the mounting points of the machining plate (31) and the side of the trapezoidal sliding block (32). The fixed base ( 1) A sliding groove (11) is provided on the sliding member (2), which is slidably installed in the sliding groove (11). A demolding opening (12) is provided on the side wall of the sliding groove (11) for the hole processing part (3) to pass through. The trapezoidal sliding block (32) passes through the demolding opening (12) and is fixedly installed on the moving member (2). The limiting block (312) is slidably connected to the fixed base (1) at the position on the outer periphery of the demolding opening (12). The length of the limiting block (312) is greater than or equal to the length of the pin (311).
2. The demolding mechanism for a component shaft hole according to claim 1, characterized in that: The trapezoidal sliding block (32) is slidably mounted on the side of the processing plate (31) and a snap-fit block (321) parallel to the corresponding side is fixedly installed. The processing plate (31) and the trapezoidal sliding block (32) are slidably mounted on the side wall with a snap-fit groove (313) that matches the snap-fit block (321). The snap-fit groove (313) and the snap-fit block (321) cooperate to form a self-locking guide mechanism.
3. The demolding mechanism for a component shaft hole according to claim 1, characterized in that: The movable component (2) includes a movable block (21). A positioning platform (14) is provided on the inner side wall of the sliding groove (11) along the sliding direction of the movable block (21). A locking platform (24) flush with the positioning platform (14) is provided on the movable block (21). A positioning block (15) is fixedly installed on the positioning platform (14). The locking platform (24) of the movable block (21) is slidably connected to the positioning block (15).
4. The demolding mechanism for a component shaft hole according to claim 3, characterized in that: The movable component (2) further includes a guide rod (22). The movable block (21) has an oblique hole (23) that passes through the movable block (21). The oblique hole (23) is located at the bottom of the movable block (21) away from the hole processing part (3). The guide rod (22) is slidably installed in the oblique hole (23). The sliding groove (11) of the fixed seat (1) has a guide groove (16). One end of the guide rod (22) slides against the guide groove (16). The other end of the guide rod (22) is fixedly connected to the upper mold of the part processing mold.
5. The demolding mechanism for a component shaft hole according to claim 4, characterized in that: A limiting post is fixedly installed on the side of the sliding groove (11) away from the demolding port (12), and a limiting cavity matching the limiting post is opened on the side of the moving block (21) near the limiting post.
6. The demolding mechanism for a component shaft hole according to claim 4, characterized in that: The bottom of the sliding groove (11) is fixedly installed with a positioning strip (17) below the moving block (21). The bottom of the moving block (21) has at least two positioning grooves (26) that match the positioning strip. The end face of the positioning strip (17) has a chamfer (171).
7. The demolding mechanism for a component shaft hole according to claim 1, characterized in that: The fixed seat (1) is located on the outer periphery of the demolding port (12) and a limiting platform (13) is provided. The limiting block (312) is slidably connected to the limiting platform (13).
8. The demolding mechanism for a component shaft hole according to claim 1, characterized in that: It also includes a demolding cylinder (4), the piston of which is fixedly connected to the fixed seat (1), the demolding cylinder (4) is fixedly installed on the lower mold, and the fixed seat (1) is slidably installed in the lower mold.