Closed dustproof single-lead-screw linear module

Abstract

The invention relates to a closed dustproof single-lead-screw linear module, and relates to the technical field of mechanical transmission devices. Comprising a fixed base, a triangular fixed base and a movable base, a servo motor drives a ball screw to drive a ball nut and a movable handle to achieve linear motion, dust is prevented from entering through various sealing structures, and the stability and reliability of equipment operation are guaranteed. In addition, through the design of an oil cavity and an oil distribution sealing ring, effective lubrication is achieved, and the service life is prolonged. The module has high sealing and dustproof effects, and has the effects of improving the module precision, reducing the maintenance cost and enhancing the environmental adaptability.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical transmission devices, and in particular to a closed dustproof single-screw linear module. Background Art

[0002] As a key automation component, linear modules are widely used in industrial production, especially in the fields of precision machining and electronic product assembly. It can realize linear or curved movement of loads, significantly improving the flexibility and positioning accuracy of production lines. With the development of technology, the design of linear modules is constantly optimized, and the performance is constantly improved, becoming an indispensable part of modern manufacturing.

[0003] In order to improve the stability of linear modules in harsh environments, common practices in the market include adding sealing devices and adopting fully enclosed designs. Specifically, adding sealing devices usually involves adding sealing rings between the guide rails and the sliders to prevent external dust from entering; while the fully enclosed design encapsulates the entire transmission system in a protective housing, leaving only the necessary inlets and outlets to better isolate external interference.

[0004] Although the above methods can improve the dustproof performance of linear modules to a certain extent, there are still obvious shortcomings. For example, although the fully enclosed design can effectively isolate external interference, its complex structure and large size are not conducive to integration into a compact space. At the same time, additional sealing components will also affect the heat dissipation performance of the equipment, causing the motor to overheat and shut down after long-term operation. Summary of the invention

[0005] In order to solve the above problems, the present application provides a closed dustproof single-screw linear module.

[0006] The present application provides a closed dustproof single-screw linear module, which adopts the following technical solution: A closed dustproof single-screw linear module comprises a fixed base, a triangular fixed base and a movable base, the fixed base is provided with a cavity inside to form a mounting groove, the top of the fixed base is also provided with a rectangular through hole connected with the mounting groove to form an assembly hole, the triangular fixed base comprises a fixed part and a triangular sliding part, the fixed part passes through the assembly hole and is installed in the mounting groove, the triangular sliding part is fixedly arranged on the top of the fixed part, the triangular sliding part is as far as the outside of the mounting groove, a servo motor is fixedly arranged at the bottom of the mounting groove, a ball screw is fixedly arranged on the output shaft of the servo motor, the fixed part is provided with a screw hole, the ball screw is inserted in the screw hole, a through groove connected with the screw hole is vertically provided on the top of the triangular sliding part to form a moving groove, a ball nut is threadedly connected to the ball screw, and a moving handle is fixedly arranged on the top of the ball nut.

[0007] By adopting the above technical solution, the closed dustproof single-screw linear module can effectively improve the stability and reliability of working in harsh environments. The installation groove formed by the cavity opened inside the fixed base and the assembly hole formed by the rectangular through hole opened on the top ensure the installation space for key components such as the ball screw and servo motor, while improving the overall rigidity and stability of the structure. The design of the triangular fixed seat enables the triangular sliding part to move smoothly outside the installation groove, ensuring the precise positioning and smooth operation of the movable seat. The coordinated use of the ball screw and the ball nut not only improves the transmission efficiency, but also reduces wear and prolongs the service life. The fixed connection between the movable handle and the movable seat ensures that the movable seat moves synchronously with the ball nut, realizing precise control of the position change of the load.

[0008] Preferably, a partition plate is fixedly arranged in the installation groove, and the partition plate divides the bottom of the installation groove into a sealed cavity to form an oil cavity, and a valve is arranged at the bottom of the oil cavity.

[0009] By adopting the above technical solution, the linear module can effectively prevent dust from entering while ensuring transmission accuracy. Specifically, the setting of the partition plate forms a sealed oil chamber at the bottom of the installation groove, thereby achieving effective protection of key components. At the same time, the valve at the bottom of the oil chamber facilitates the injection and discharge of lubricating oil, ensuring the normal operation of the lubrication system and improving the service life and reliability of the equipment.

[0010] Preferably, anti-fouling sealing rings are installed at both ends of the screw hole, and an oil-distributing sealing ring is also provided at one end of the screw hole close to the servo motor, and the oil-distributing sealing ring is arranged at one end of the anti-fouling sealing ring close to the servo motor.

[0011] By adopting the above technical solution, the anti-fouling seal ring effectively blocks external dust and impurities from entering the screw hole, avoiding the wear of the screw and ball nut by pollutants, thereby increasing the service life of the linear module. At the same time, the oil-distributing seal ring not only further enhances the sealing effect, but also evenly distributes lubricating oil during operation, ensuring good lubrication between the screw and ball nut, reducing friction resistance, and improving motion accuracy and stability.

[0012] Preferably, the oil-closing sealing ring comprises a sealing ring casing, and a plurality of annular protrusions are annularly arranged inside the sealing ring casing to form an oil-closing flange.

[0013] By adopting the above technical solution, the oil distribution flange formed by multiple protrusions arranged in an annular shape inside the sealing ring shell of the oil distribution seal ring can effectively guide the lubricating oil to be evenly distributed on the ball screw, thereby improving the lubrication effect, reducing the wear between the ball screw and the ball nut, and extending the service life. At the same time, the design of the oil distribution flange can also enhance the sealing performance, further prevent dust and impurities from entering, and ensure the stable operation of the linear module in harsh environments.

[0014] Preferably, a U-shaped frame is fixedly provided above the fixed base near the servo motor.

[0015] By adopting the above technical solution, the U-shaped frame can cover the gap formed by the movable seat being lifted by the triangular fixed seat, thereby improving the dustproof performance. At the same time, due to the setting of the U-shaped frame, the movable seat can also play a positioning role when it is reset.

[0016] Preferably, the movable groove is concavely provided with limiting grooves on both sides, and limiting wings are convexly provided on both sides of the movable handle, and the limiting wings are slidably inserted in the limiting grooves.

[0017] By adopting the above technical solution, the limit grooves on both sides of the moving groove cooperate with the limit wings on both sides of the moving handle, effectively limiting the horizontal deviation of the moving handle and improving the stability and accuracy of the linear module. At the same time, this structural design makes the moving handle more stable during movement, reduces unnecessary wear and vibration, and extends the service life of the equipment.

[0018] Preferably, a triangular groove matching the shape of the triangular sliding portion is formed at the bottom of the movable seat to form a matching groove, and the matching groove is slidably fitted with the top of the triangular sliding portion.

[0019] By adopting the above technical solution, a triangular groove matching the shape of the triangular sliding part is formed at the bottom of the movable seat to form a matching groove, so that the matching groove and the top of the triangular sliding part can be tightly slid and fit. This design not only improves the stability and accuracy of the linear module during movement, but also effectively prevents external dust and impurities from entering the internal structure, thereby extending the service life of the equipment. At the same time, due to the close combination between the matching groove and the triangular sliding part, the vibration and noise generated during operation can be reduced, further improving the reliability and operating experience of the system.

[0020] Preferably, support platforms are provided on both sides of the triangular sliding portion, the support platforms are arranged in an L shape, a plug-in groove is formed between the support platform and the triangular sliding portion, and a first magnetic block is fixedly provided on one end of the support platform facing the plug-in groove.

[0021] By adopting the above technical solutions, the closed dustproof single-screw linear module can effectively improve the stability and reliability of the system. The setting of the L-shaped support table not only enhances the rigidity of the mechanical components, but also facilitates the docking and installation with other components. The design of the plug-in slot facilitates the quick installation and replacement of components, simplifying the maintenance process. The setting of the first magnetic block can enhance the attraction between the movable seat and the support table, ensuring that the two fit closely, and further improving the accuracy and stability of the system.

[0022] Preferably, two protrusions are oppositely arranged at the bottom of the movable seat to form a buckling portion, and a mounting buckle is fixedly arranged on one side of the buckling portion facing the support platform, and the mounting buckle is arranged in a U shape.

[0023] By adopting the above technical solution, the linear module can achieve a stable and reliable dustproof effect while ensuring good heat dissipation performance. The buckle formed by the two protrusions arranged opposite to each other at the bottom of the movable seat and the U-shaped mounting buckle fixed on one side of the buckle can effectively enhance the connection strength between the movable seat and the support platform, ensuring that there will be no loosening during high-speed movement, and improving the stability and reliability of the overall structure.

[0024] Preferably, a second magnetic block is fixedly disposed on the inner top surface of the mounting buckle, and the second magnetic block is crimped on the top of the first magnetic block.

[0025] By adopting the above technical solution, a second magnetic block is fixedly provided on the inner top surface of the mounting buckle, and the second magnetic block is crimped on the top of the first magnetic block, thereby enhancing the connection stability between the movable seat and the triangular sliding part, and improving the vibration resistance and reliability of the linear module during operation.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By installing the servo motor and ball screw in the oil chamber inside the fixed base, effective dust protection is achieved, preventing external dust from entering and affecting the normal operation of the transmission system; 2. The connection method between the ball nut and the movable seat ensures the stability and accuracy of the linear module during movement, improves the working reliability and service life of the equipment, and at the same time, the sliding fit between the movable seat and the triangular fixed seat further achieves a dust-proof technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a stereoscopic view of an embodiment of the present application; Figure 2 is an exploded view of an embodiment of the present application; Figure 3 is a cross-sectional view of the present application example; Figure 4 yes Figure 3 A partial enlarged view of the middle A; Figure 5 It is a cross-sectional view showing the specific structure of the fixed base; Figure 6 yes Figure 5 A partial enlarged view of point B in the middle.

[0028] Explanation of the reference numerals: 1. fixed base; 11. assembly hole; 13. partition plate; 14. mounting groove; 15. oil chamber; 16. valve; 17. U-shaped frame; 2. servo motor; 3. triangular fixed seat; 31. fixed part; 311. screw hole; 312. oil distribution sealing ring; 314. sealing ring housing; 315. oil distribution flange; 313. anti-fouling sealing ring; 21. ball screw; 211. ball nut; 212. movable handle; 213. limiting wing; 32. triangular sliding part; 321. plug-in groove; 322. first magnetic block; 324. support platform; 326. movable groove; 327. limiting groove; 4. movable seat; 41. mounting buckle; 42. buckling part; 43. second magnetic block; 44. matching groove. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] In the description of the invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0031] The present application embodiment discloses a closed dustproof single-screw linear module, referring to Figure 1 and Figure 2 , including a fixed base 1, a triangular fixed base 3 and a movable base 4. A cavity is provided inside the fixed base 1 to form a mounting groove 14. A rectangular through hole connected to the mounting groove 14 is also provided on the top of the fixed base 1 to form an assembly hole 11. The triangular fixed base 3 includes a fixed portion 31 and a triangular sliding portion 32. The fixed portion 31 is arranged in a rectangular block shape. The assembly hole 11 is arranged according to the shape of the fixed portion 31. This arrangement facilitates the installation of the fixed portion 31 in the mounting groove 14. The triangular sliding portion 32 is fixedly arranged on the top of the fixed portion 31. The shape of the triangular sliding portion 32 is arranged to be approximately a triangular platform. When the triangular fixed base 3 is installed with the fixed base 1, the fixed portion 31 is placed in the mounting groove 14, and the triangular sliding portion 32 is placed outside the mounting groove 14.

[0032] Reference Figure 2 and Figure 3A servo motor 2 is fixedly arranged at the bottom of the mounting groove 14, a ball screw 21 is fixedly arranged on the output shaft of the servo motor 2, a screw hole 311 adapted to the ball screw 21 is provided in the fixing portion 31, and the screw hole 311 is arranged as a through hole opened along the length direction of the fixing portion 31. The ball screw 21 is inserted into the screw hole 311. A through groove connected to the screw hole 311 is vertically provided at the top of the triangular sliding portion 32 to form a moving groove 326, and a ball nut 211 is threadedly connected to the ball screw 21. When the servo motor 2 drives the ball screw 21 to rotate, the ball nut 211 can be driven by the ball screw 21 to move. A moving handle 212 is fixedly arranged on the top of the ball nut 211, and the moving handle 212 is integrally arranged with the ball nut 211. The moving handle 212 can move in the moving groove 326 along with the movement of the ball nut 211 , and one end of the moving handle 212 extending out of the moving groove 326 is fixedly connected to the movable seat 4 . This arrangement enables the servo motor 2 to drive the seat to move.

[0033] Reference Figure 4 In order to make the movable seat 4 more stable when the servo motor 2 drives the movable seat 4 to move, the movable slot 326 is respectively provided with concave limit slots 327 on both sides, and the opening length of the limit slot 327 is the same as the length of the movable slot 326. The movable handle 212 is provided with limit wings 213 on both sides, and the limit wings 213 are slidably inserted in the limit slots 327. This setting enables the limit wings 213 to move in the limit slots 327 when the movable handle 212 moves, and through the cooperation of the limit slots 327 and the limit wings 213, the movable handle 212 will not tilt when moving, thereby improving the support and stability of the movable handle 212.

[0034] Reference Figure 5 and Figure 6 , a partition plate 13 is fixedly arranged in the mounting groove 14, the height of the partition plate 13 is higher than the screw hole 311, and the position where the partition plate 13 contacts the fixed part 31 is sealed, and the partition plate 13 separates the bottom of the mounting groove 14 to form a sealed cavity to form an oil cavity 15, the oil cavity 15 is set as a sealed cavity, and the servo motor 2, the screw hole 311 and the ball screw 21 are all arranged in the oil cavity 15. The oil cavity 15 is filled with liquid lubricating oil, which can lubricate the roller screw and can also play a cooling function for the servo motor 2. In order to avoid the servo motor 2 being soaked in lubricating oil for a long time and causing damage, the servo motor 2 used in the embodiment of the present application is equipped with a sealed shell on the outside to ensure that the lubricating oil does not directly contact the servo motor 2, ensure that the servo motor 2 can operate stably for a long time, and at the same time, the lubricating oil can play a cooling effect on the servo motor 2. A valve 16 is arranged at the bottom of the oil cavity 15, and the arrangement of the valve 16 is convenient for maintenance personnel to regularly add oil and drain oil.

[0035] In order to prevent the liquid lubricating oil from leaking out through the screw hole 311 and the moving groove 326, anti-fouling sealing rings 313 are installed at both ends of the screw hole 311. The anti-fouling sealing rings 313 are set as O-rings. The anti-fouling sealing rings 313 are used to play a sealing and anti-fouling role, and can form a seal between the oil chamber 15 and the screw hole 311 to prevent the liquid lubricating oil from pouring into the screw hole 311. An oil distribution sealing ring 312 is also arranged at one end of the screw hole 311 close to the servo motor 2. When the servo motor 2 and the ball screw 21 are installed, there is a certain distance between the servo motor 2 and the triangular fixing seat 3, which causes one section of the ball screw 21 to be directly exposed to the oil. When the servo motor 2 drives the ball screw 21 to rotate, the ball screw 21 will stir the oil in the oil chamber 15 and bring it into the screw hole 311, thereby promoting lubrication between the ball screw 21 and the ball nut 211. The oil distribution seal ring 312 is arranged at one end of the anti-fouling seal ring 313 close to the servo motor 2. The oil distribution seal ring 312 includes a seal ring housing 314. The seal ring housing 314 has a plurality of annular protrusions arranged in an annular shape inside to form an oil distribution flange 315. The oil distribution flange 315 is made of a soft rubber material and is easily deformed when in contact with the ball screw 21, so that the oil distribution flange 315 and the surface of the ball screw 21 are always kept in close contact. This arrangement can evenly spread the lubricating oil carried on the ball screw 21 and can also play a certain sealing role. In combination with the anti-fouling seal ring 313, a higher sealing effect can be formed, and at the same time, lubrication between the ball screw 21 and the ball nut 211 can be maintained.

[0036] Reference Figure 2 and Figure 3, the bottom of the movable seat 4 is provided with a triangular groove matching the shape of the triangular sliding part 32 to form a matching groove 44, and the matching groove 44 is slidably fitted with the top of the triangular sliding part 32. Since the triangular sliding part 32 is set as a triangular platform, two matching slopes can be formed on both sides of the groove top of the movable groove 326, and the angle of the slope is inclined downward, so that the groove top of the movable groove 326 has a certain sealing and dustproof function, which can prevent external dust from entering. Since the servo motor 2 is set in the fixed base 1, the length of the triangular fixed seat 3 is smaller than the length of the movable seat 4. When the servo motor 2 drives the movable seat 4 to be in the initial position (that is, the movable seat 4 does not extend), the movable seat 4 and the fixed base 1 can form a rectangular parallelepiped together. This setting can make the appearance coordinated and beautiful. When the servo motor 2 drives the movable seat 4 to extend to the maximum length, the end of the movable seat 4 away from the extension direction can be level with the end of the triangular fixed seat 3 away from the extension direction. This setting enables the movable seat 4 to always cover the top of the triangular fixed seat 3, and then the movable groove 326 is always in a sealed state. A U-shaped frame 17 is fixedly arranged at a position of the fixed base 1 near the servo motor 2, and the opening end of the U-shaped frame is arranged toward the triangular fixed base 3, so as to cover the gap formed by the movable base 4 being lifted by the triangular fixed base 3, thereby improving the dustproof performance. At the same time, due to the arrangement of the U-shaped frame 17, it can also play a positioning role when the movable base 4 is reset.

[0037] Support platforms 324 are provided on both sides of the triangular sliding portion 32. Both support platforms 324 are set in L shape. Both L-shaped support platforms 324 are bent inward, so that a plug-in slot 321 is formed between the support platform 324 and the triangular sliding portion 32. Two convex blocks are oppositely provided at the bottom of the movable seat 4 to form a buckle portion 42. Both buckle portions 42 are fixedly provided with a mounting buckle 41 on one side facing the support platform 324. The mounting buckle 41 is set in U shape. The mounting buckle 41 is inserted into the plug-in slot 321, and the mounting buckle 41 can slide relative to the support platform 324. Due to manufacturing reasons or after the movable seat 4 is used for a long time, the fit between the mounting buckle 41 and the support platform 324 is reduced due to deformation, thereby increasing the gap between the mounting buckle 41 and the support platform 324. In order to improve the fit between the mounting buckle 41 and the support platform 324, a first magnetic block 322 is fixedly provided at one end of the support platform 324 facing the plug-in slot 321. A second magnetic block 43 is fixedly disposed on the inner top surface of the mounting buckle 41. The second magnetic block 43 is crimped onto the top of the first magnetic block 322. The first magnetic block 322 and the second magnetic block 43 are magnetically adsorbed to make the mounting buckle 41 fit tightly with the support platform 324.

[0038] The implementation principle of the embodiment of the present application is as follows: a closed dustproof single-screw linear module of the present application uses a servo motor 2 as a power source, a single ball screw 21 and a ball nut 211 to drive the movable seat 4 to move, an oil chamber 15 is set and the ball screw 21 and the servo motor 2 are placed in the oil chamber 15, and oil cooling is used to cool down and achieve a dustproof technical effect. The triangular sliding portion 32 is set as a triangle and is slidably fitted with the matching groove 44 to further improve the dustproof sealing performance.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A closed dustproof single-screw linear module, characterized in that: The invention comprises a fixed base (1), a triangular fixed base (3) and a movable base (4); the fixed base (1) is provided with a cavity inside to form a mounting groove (14); the top of the fixed base (1) is also provided with a rectangular through hole connected to the mounting groove (14) to form an assembly hole (11); the triangular fixed base (3) comprises a fixed portion (31) and a triangular sliding portion (32); the fixed portion (31) passes through the assembly hole (11) and is installed in the mounting groove (14); the triangular sliding portion (32) is fixedly arranged on the top of the fixed portion (31); the triangular sliding portion (32) is arranged outside the mounting groove (14); the bottom of the mounting groove (14) is fixedly A servo motor (2) is fixedly arranged, and a ball screw (21) is fixedly arranged on the output shaft of the servo motor (2); a screw hole (311) is opened on the fixed part (31), and the ball screw (21) is inserted into the screw hole (311); a through groove connected to the screw hole (311) is vertically opened on the top of the triangular sliding part (32) to form a moving groove (326); a ball nut (211) is threadedly connected to the ball screw (21); a moving handle (212) is fixedly arranged on the top of the ball nut (211); one end of the moving handle (212) extending out of the moving groove (326) is fixedly connected to the movable seat (4).

2. A closed dustproof single-screw linear module according to claim 1, characterized in that: A partition plate (13) is fixedly arranged in the installation groove (14), and the partition plate (13) divides the bottom of the installation groove (14) into a sealed cavity to form an oil cavity (15). A valve (16) is arranged at the bottom of the oil cavity (15).

3. The closed dustproof single-screw linear module according to claim 1, characterized in that: Anti-fouling sealing rings (313) are installed at both ends of the lead screw hole (311), and an oil distribution sealing ring (312) is also arranged at one end of the lead screw hole (311) close to the servo motor (2). The oil distribution sealing ring (312) is arranged at one end of the anti-fouling sealing ring (313) close to the servo motor (2).

4. A closed dustproof single-screw linear module according to claim 3, characterized in that: The oil distribution sealing ring (312) comprises a sealing ring casing (314), and a plurality of annular protrusions are annularly arranged inside the sealing ring casing (314) to form an oil distribution flange (315).

5. The closed dustproof single-screw linear module according to claim 1, characterized in that: A U-shaped frame (17) is fixedly arranged above the fixed base (1) at a position close to the servo motor (2).

6. The closed dustproof single-screw linear module according to claim 1, characterized in that: The movable groove (326) is respectively provided with concave limiting grooves (327) on both sides thereof, and limiting wings (213) are convexly provided on both sides of the movable handle (212), and the limiting wings (213) are slidably inserted in the limiting grooves (327).

7. The closed dustproof single-screw linear module according to claim 1, characterized in that: The bottom of the movable seat (4) is provided with a triangular groove matching the shape of the triangular sliding portion (32) to form a matching groove (44), and the matching groove (44) is slidably fitted with the top of the triangular sliding portion (32).

8. The closed dustproof single-screw linear module according to claim 1, characterized in that: Support platforms (324) are arranged on both sides of the triangular sliding portion (32); the support platform (324) is arranged in an L shape; an insertion groove (321) is formed between the support platform (324) and the triangular sliding portion (32); and a first magnetic block (322) is fixedly arranged at one end of the support platform (324) facing the insertion groove (321).

9. The closed dustproof single-screw linear module according to claim 8, characterized in that: The bottom of the movable seat (4) is provided with two opposing protrusions to form a buckling portion (42), and a mounting buckle (41) is fixedly provided on one side of the buckling portion (42) facing the support platform (324), and the mounting buckle (41) is arranged in a U shape.

10. A closed dustproof single-screw linear module according to claim 9, characterized in that: A second magnetic block (43) is fixedly disposed on the inner top surface of the mounting buckle (41), and the second magnetic block (43) is pressed onto the top of the first magnetic block (322).

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