Mechanical arm vertical driver
By employing rollers and ball bearings in the vertical actuator of the robotic arm, the problem of sliding friction during vertical movement of the robotic arm is solved, reducing noise and extending service life.
Patent Information
- Application Number
- CN202423154786.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-20
AI Technical Summary
When the robotic arm moves vertically, it is subjected to significant sliding friction, resulting in high noise levels, severe wear, and reduced service life.
Rollers and balls are installed on the inner and outer sides of the sliding plate to change sliding friction into rolling friction, thereby reducing friction and wear.
Rolling friction reduces noise during the movement of the sliding plate and extends its service life.
Smart Images
Figure CN223617724U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of robotic arms, specifically a vertical actuator for robotic arms. Background Technology
[0002] Robotic arms are complex systems characterized by high precision, multiple inputs and multiple outputs, high nonlinearity, and strong coupling. Due to their unique operational flexibility, they are widely used in fields such as industrial assembly and safety and explosion protection. A robotic arm vertical actuator is a device used to move a robotic arm in the vertical direction, providing a vertical movement function for the robotic arm.
[0003] Currently, when a robotic arm is moved vertically by a driver, it is subjected to sliding friction, which generates significant noise and increases wear, thus reducing the lifespan of the robotic arm. Therefore, a vertical driver for a robotic arm is proposed to address these issues. Utility Model Content
[0004] To overcome the shortcomings of existing technologies and avoid the problem of excessive sliding friction when the robotic arm moves vertically, this utility model proposes a vertical actuator for a robotic arm.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a vertical drive for a robotic arm, including a motor base, a drive component is provided at the top of the motor base, a running component is provided at the front end of the drive component, and a friction component is provided inside the running component.
[0006] The drive assembly includes a stepper motor rotatably connected to the output shaft at the top of the motor base. A drive rod is fixedly connected to the output end of the front end of the stepper motor. A belt is sleeved on the surface of the drive rod. A hollow block is fixedly connected to the front end of the stepper motor. A hollow plate is fixedly connected to the top of the hollow block. Blocking rods are fixedly connected to both the upper and lower sides inside the hollow plate. A plug rod is inserted into the top of the hollow plate. A plug plate is inserted into the interior of the front end of the plug rod.
[0007] The operating component includes a vertical groove formed at the front end of the hollow plate, a vertical rod fixedly connected inside the vertical groove, a sliding plate slidably connected to the surface of the vertical rod, a robotic arm snapped onto the front end of the sliding plate, support rods fixedly connected to both the upper and lower ends of the sliding plate, an elastic device provided on the left end face of the sliding plate, and a locking block provided on the side of the elastic device away from the sliding plate.
[0008] Preferably, the hollow block and the hollow plate are connected, the drive rod extends into the interior of the hollow block, and the side of the belt away from the drive rod is sleeved on the surface of the insert rod.
[0009] Preferably, the proximal ends of the two blocking rods are respectively adapted to contact the upper and lower ends of the sliding plate. The two blocking rods can limit the extreme position of the sliding plate in the vertical direction to avoid collision. The insert plate is snapped into the front end of the hollow plate. The insert plate can limit the position of the insert rod and facilitate the subsequent disassembly of the insert rod.
[0010] Preferably, the sliding plate is slidably connected inside the vertical groove, and the surface of the belt has a first groove that is adapted to engage with the end of the support rod away from the sliding plate. The surface of the belt also has a second groove that is adapted to engage with the locking block. The elastic device includes a spring and a telescopic rod fixedly connected between the sliding plate and the locking block. The spring is wound around the surface of the telescopic rod. The support rod and the locking block enable the belt to move the sliding plate vertically when it moves.
[0011] Preferably, the friction assembly includes two rolling grooves on the left and right sides of the hollow plate located on the vertical groove, ball bearings are rolled inside the left and right sides of the sliding plate, rolling grooves are provided on the left and right sides of the vertical rod, and rollers are rotatably connected to the left and right sides inside the sliding plate.
[0012] Preferably, the ball bearing is rolled inside the first rolling groove, the sliding plate has a groove extending through both ends, the vertical rod is slidably connected inside the groove, the roller is rotatably connected to the inner wall of the groove, and the roller is rolledly connected to the inner wall of the second rolling groove. The friction between the sliding plate, the vertical rod, and the hollow plate becomes rolling friction.
[0013] The advantages of this utility model are:
[0014] This invention provides rollers and balls on the inner and outer sides of the sliding plate, changing the connection between the sliding plate, the vertical rod, and the hollow plate from sliding friction to rolling friction. This reduces the noise generated when the sliding plate moves. In addition, the rollers and balls reduce the wear on the sliding plate, thereby increasing its service life. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2This is a cross-sectional structural diagram of the present invention;
[0018] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0019] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B;
[0020] Figure 5 This is a schematic diagram of the structure of the sliding plate surface of this utility model;
[0021] Figure 6 This is a top sectional view of the sliding plate of this utility model.
[0022] Figure 7 For the present utility model Figure 6 Enlarged structural diagram at point C.
[0023] In the diagram: 1. Motor base; 2. Drive assembly; 21. Stepper motor; 22. Drive rod; 23. Belt; 24. Hollow block; 25. Hollow plate; 26. Blocking rod; 27. Insert rod; 28. Insert plate; 3. Running assembly; 31. Vertical groove; 32. Vertical rod; 33. Sliding plate; 34. Robotic arm; 35. Support rod; 36. Elastic device; 37. Clamping block; 4. Friction assembly; 41. Rolling groove one; 42. Ball bearing; 43. Rolling groove two; 44. Roller. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] The following is in conjunction with the appendix Figure 1 —7 provides further detailed information about this application.
[0026] This application discloses a vertical actuator for a robotic arm. (Refer to...) Figure 1 A vertical actuator for a robotic arm includes a motor base 1, a drive assembly 2 is provided at the top of the motor base 1, a running assembly 3 is provided at the front end of the drive assembly 2, and a friction assembly 4 is provided inside the running assembly 3.
[0027] Reference Figure 2 - Figure 4The drive assembly 2 includes a stepper motor 21 rotatably connected to the output shaft at the top of the motor base 1. A drive rod 22 is fixedly connected to the output end of the front end of the stepper motor 21. A belt 23 is sleeved on the surface of the drive rod 22. A hollow block 24 is fixedly connected to the front end of the stepper motor 21. A hollow plate 25 is fixedly connected to the top of the hollow block 24. Blocking rods 26 are fixedly connected to both the upper and lower sides inside the hollow plate 25. A plug rod 27 is inserted into the top of the hollow plate 25. The hollow block 24 and the hollow plate 25 are connected. The drive rod 22 extends into the hollow plate 25. Inside the core block 24, the side of the belt 23 away from the drive rod 22 is sleeved on the surface of the insert rod 27. The insert plate 28 is inserted into the front end of the insert rod 27. The near ends of the two blocking rods 26 are respectively adapted to contact the upper and lower ends of the sliding plate 33. The two blocking rods 26 can limit the extreme position of the sliding plate 33 in the vertical direction to avoid collision. The insert plate 28 is snapped into the front end of the hollow plate 25. The insert plate 28 can limit the position of the insert rod 27 and also facilitate the subsequent disassembly of the insert rod 27.
[0028] Reference Figure 3 , Figure 5 and Figure 6 The running component 3 includes a vertical groove 31 formed at the front end of the hollow plate 25. A vertical rod 32 is fixedly connected inside the vertical groove 31. A sliding plate 33 is slidably connected to the surface of the vertical rod 32. A robotic arm 34 is snapped onto the front end of the sliding plate 33. Support rods 35 are fixedly connected to both the upper and lower ends of the sliding plate 33. An elastic device 36 is provided on the left end face of the sliding plate 33. A locking block 37 is provided on the side of the elastic device 36 away from the sliding plate 33. The sliding plate 33 is slidably connected inside the vertical groove 31. A locking groove 1 is formed on the surface of the belt 23 that is adapted to and snapped onto the end of the support rod 35 away from the sliding plate 33. A locking groove 2 is formed on the surface of the belt 23 that is adapted to and snapped onto the locking block 37. The elastic device 36 includes a spring and a telescopic rod fixedly connected between the sliding plate 33 and the locking block 37. The spring is wound around the surface of the telescopic rod. The support rod 35 and the locking block 37 cause the belt 23 to drive the sliding plate 33 to move in the vertical direction when it moves.
[0029] Reference Figure 7 The friction assembly 4 includes two rolling grooves 41 on the left and right sides of the vertical groove 31 of the hollow plate 25. Ball bearings 42 are rolled inside the left and right sides of the sliding plate 33. Rolling grooves 43 are opened on both the left and right sides of the vertical rod 32. Rollers 44 are rotatably connected to the left and right sides of the sliding plate 33. The ball bearings 42 are rolled inside the rolling groove 41. The sliding plate 33 has a groove that runs through both the upper and lower ends. The vertical rod 32 is slidably connected inside the groove. The rollers 44 are rotatably connected to the inner wall of the groove. The rollers 44 are rolled inside the inner wall of the rolling groove 43. The friction mode between the sliding plate 33, the vertical rod 32 and the hollow plate 25 becomes rolling friction.
[0030] Working principle: The operator can attach different robotic arms 34 to the front end of the sliding plate 33 according to the needs of use. Then the operator can drive the motor base 1 to drive the stepper motor 21 to rotate. Then the operator can drive the stepper motor 21 to drive the drive rod 22 to rotate. At this time, the drive rod 22 will drive the sleeved belt 23 to move. When the belt 23 moves, it will drive the locking block 37 on the surface to move accordingly. At this time, the locking block 37 drives the support rod 35 to move accordingly through the elastic device 36. Since the support rod 35 is locked on the surface of the belt 23, the belt 23 can stably drive the sliding plate 33 to rise and fall in the vertical direction.
[0031] As the sliding plate 33 moves, it will cause the ball bearing 42 to roll inside the first rolling groove 41, and at the same time, it will cause the roller 44 to roll inside the second rolling groove 43, so that the friction force experienced by the vertical rod 32 during movement is changed to rolling friction.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A vertical actuator for a robotic arm, characterized in that: It includes a motor base (1), a drive assembly (2) is provided at the top of the motor base (1), a running assembly (3) is provided at the front end of the drive assembly (2), and a friction assembly (4) is provided inside the running assembly (3). The drive assembly (2) includes a stepper motor (21) rotatably connected to the output shaft at the top of the motor base (1). A drive rod (22) is fixedly connected to the output end of the front end of the stepper motor (21). A belt (23) is sleeved on the surface of the drive rod (22). A hollow block (24) is fixedly connected to the front end of the stepper motor (21). A hollow plate (25) is fixedly connected to the top of the hollow block (24). A blocking rod (26) is fixedly connected to both the upper and lower sides inside the hollow plate (25). A plug rod (27) is inserted into the top of the hollow plate (25). A plug plate (28) is inserted into the front end of the plug rod (27). The operating component (3) includes a vertical groove (31) opened at the front end of the hollow plate (25). A vertical rod (32) is fixedly connected inside the vertical groove (31). A sliding plate (33) is slidably connected to the surface of the vertical rod (32). A robotic arm (34) is snapped into the front end of the sliding plate (33). Support rods (35) are fixedly connected to both the upper and lower ends of the sliding plate (33). An elastic device (36) is provided on the left end face of the sliding plate (33). A locking block (37) is provided on the side of the elastic device (36) away from the sliding plate (33).
2. The robotic arm vertical actuator according to claim 1, characterized in that: The hollow block (24) and the hollow plate (25) are connected, the drive rod (22) extends into the interior of the hollow block (24), and the belt (23) is sleeved on the surface of the insert rod (27) on the side away from the drive rod (22).
3. The robotic arm vertical actuator according to claim 1, characterized in that: The two blocking rods (26) are respectively adapted to contact the upper and lower ends of the sliding plate (33), and the insert plate (28) is snapped into the front end of the hollow plate (25).
4. A vertical actuator for a robotic arm according to claim 1, characterized in that: The sliding plate (33) is slidably connected inside the vertical groove (31). The surface of the belt (23) is provided with a slot one that is adapted to engage with the end of the support rod (35) away from the sliding plate (33). The surface of the belt (23) is provided with a slot two that is adapted to engage with the locking block (37). The elastic device (36) includes a spring and a telescopic rod that are fixedly connected between the sliding plate (33) and the locking block (37). The spring is wound around the surface of the telescopic rod.
5. A vertical actuator for a robotic arm according to claim 1, characterized in that: The friction assembly (4) includes two rolling grooves (41) on the left and right sides of the hollow plate (25) located in the vertical groove (31), and the sliding plate (33) is connected to the inner sides of the left and right sides by rolling balls (42). The vertical rod (32) is provided with rolling grooves (43) on both the left and right sides. The sliding plate (33) is connected to the inner sides of the left and right sides by rollers (44).
6. A vertical actuator for a robotic arm according to claim 5, characterized in that: The ball (42) is tumbling connected inside the first rolling groove (41). The sliding plate (33) has a groove that runs through both the upper and lower ends. The vertical rod (32) is slidably connected inside the groove. The roller (44) is rotatably connected to the inner wall of the groove. The roller (44) is tumbling connected to the inner wall of the second rolling groove (43).