Manipulator for compressor cylinder

Abstract

The utility model relates to a manipulator for a compressor cylinder, which comprises a manipulator body, a mounting seat arranged on a manipulator plate body, a moving seat arranged on the mounting seat, a clamping assembly arranged on the moving seat and a driving part arranged on the mounting seat, the driving piece drives the moving seat to slide on the mounting seat so that the clamping assembly gets close to or away from the workpiece; the clamping assembly comprises a mounting column, two side supporting rods connected to the mounting column in a sliding mode and a driving assembly arranged in the mounting column, and the driving assembly drives the two side supporting rods to get away from each other or get close to each other. The mechanical arm has the effect of stabilizing the side support and fixing the workpiece, and the workpiece is prevented from falling off from the mechanical arm in the moving process.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a robotic arm for compressor cylinders. Background Technology

[0002] A compressor is a driven fluid machine that elevates low-pressure gas to high-pressure gas; it is the heart of a refrigeration system. It draws in low-temperature, low-pressure refrigerant gas through the suction pipe, compresses it, and then discharges high-temperature, high-pressure refrigerant gas through the discharge pipe, providing power for the refrigeration cycle. The cylinder assembly within the compressor is crucial in determining its functional performance.

[0003] Currently, the workpieces (similar to handcuffs) of compressor cylinders must be polished before they can be used. The polishing process involves several steps: initial rinsing, transfer to the processing area, placement on a machine tool for polishing, removal from the machine tool and placement on a flipping mechanism for flipping, transfer to the processing area for further polishing, rinsing again, and finally picking up and placing on a conveyor belt. During the polishing process, a robotic arm will remove or place the workpiece to move it, thus gradually completing the above steps. Usually, the robotic arm is equipped with a three-jaw chuck to fix the workpiece. However, if the cylinder that drives the three-jaw chuck to fix the workpiece experiences insufficient air supply during the transfer process, the robotic arm will be unable to continue fixing the workpiece, and the workpiece will fall off the three-jaw chuck. This not only damages the workpiece itself but also (if the workpiece falls into an important area) affects the production line. Utility Model Content

[0004] To address the issue of unstable workpiece fixation that may occur with robotic arms, this application provides a robotic arm for compressor cylinders.

[0005] The robotic arm for compressor cylinders provided in this application adopts the following technical solution:

[0006] A robotic arm for a compressor cylinder includes a robotic arm body, a mounting base on the robotic arm plate, a movable base on the mounting base, a gripping assembly on the movable base, and a driving component on the mounting base. The driving component drives the movable base to slide on the mounting base so that the gripping assembly moves closer to or away from the workpiece. The gripping assembly includes a mounting post, two side support rods slidably connected to the mounting post, and a driving assembly disposed within the mounting post. A fixed block is provided on the mounting post. The driving assembly includes a driving rod rotatably connected to the fixed block, a driving helical gear coaxially fixed to the driving rod, a driven helical gear rotatably connected to the fixed block, and a servo motor for driving the driving rod to rotate. The driving helical gear and the driven helical gear mesh with each other. A driving protrusion is provided on the side of the driven helical gear away from the fixed block. A driving groove for accommodating the driving protrusion is provided on the side support rod. A sliding groove is provided on the mounting post for the side support rods to slide through the side wall of the mounting post.

[0007] By adopting the above technical solution, when gripping a workpiece, the robot body first moves the mounting base above the workpiece, and then the drive unit drives the moving base to move down to approach the workpiece. When the bottom end of the mounting column is accommodated into the workpiece, the drive assembly is activated to drive the two side support rods on the mounting column to move away from each other and protrude from the mounting column. After both side support rods are pressed against the inner wall of the workpiece, the two side support rods fix the workpiece by side support, thereby enabling the robot to grip and fix the workpiece. Compared with the method of fixing the workpiece by a cylinder-driven three-jaw chuck, the workpiece transfer robot of this application adopts the method of servo motor driving gear rotation to drive the side support rods to support and fix the workpiece. Even if the servo motor has a problem, due to the self-locking function of the servo motor and the gear meshing method, the side support rods will not retract, and the side support rods on the mounting column will maintain the fixation of the workpiece, improving the problem of unstable workpiece fixation that the robot may have.

[0008] Preferably, the mounting column has a sliding groove for the side support rod to slide through the side wall of the mounting column.

[0009] By adopting the above technical solution and setting a sliding groove for the side support rod to slide, the stability of the side support rod during sliding is improved.

[0010] Preferably, the fixed block is provided with an auxiliary gear set, which includes a first auxiliary gear and a second auxiliary gear. The first auxiliary gear is rotatably connected to the fixed block, and the second auxiliary gear is rotatably connected to the drive rod. The two sides of the first auxiliary gear mesh with the driving helical gear and the second auxiliary gear, respectively, and the two sides of the second auxiliary gear mesh with the driven helical gear and the first auxiliary gear, respectively.

[0011] By adopting the above technical solution, the auxiliary gear set improves the smoother engagement between the driving helical gear and the driven helical gear, and enhances the operational stability of the driving helical gear and the driven helical gear.

[0012] Preferably, a limiting block is fixed on the upper part of the drive rod, and the limiting block is located on both radial sides of the second auxiliary gear.

[0013] By adopting the above technical solution, a limit block is set to prevent the second auxiliary gear from moving on the drive rod, which would cause unstable transmission between the gears.

[0014] Preferably, the mounting column is provided with a transmission gear set, the side wall of the mounting column is provided with a mounting block, the servo motor is mounted on the mounting block, the transmission gear set includes a first transmission gear and a second transmission gear, the first transmission gear and the second transmission gear mesh with each other, the first transmission gear is coaxially fixed with the output shaft of the servo motor, and the second transmission gear is coaxially fixed with the drive rod.

[0015] By adopting the above technical solution, a transmission gear set is set to transmit the power of the servo motor to the drive rod, so as to ultimately drive the driven helical gear to rotate.

[0016] Preferably, one side of the side support rod is provided with a guide protrusion, and the groove wall of the sliding groove is provided with a guide groove for the guide protrusion to slide.

[0017] By adopting the above technical solution, guide protrusions and guide grooves are set to cooperate to improve the stability of the side support rod movement, and the side support rod is limited so that it can only move in the depth direction of the sliding groove.

[0018] Preferably, a rubber abutment block is provided on the side of the side support rods that are far apart from each other, and the end of the rubber abutment block is provided with an abutment arc surface, which is used to abut against the inner wall of the workpiece.

[0019] By adopting the above technical solution, rubber abutment blocks are set to protect the workpiece and improve the tightness of the connection between the side support rod and the workpiece, thereby improving the fixation firmness of the side support rod to the workpiece.

[0020] Preferably, the driving component is a servo electric cylinder, which is fixed on the mounting base, and the output shaft of the servo electric cylinder is fixed to the moving base; guide posts are provided at the four corners of the mounting base, and the guide posts pass through the moving base.

[0021] By adopting the above technical solution, the movement of the guide column is set to guide the movement of the moving seat, thereby improving the stability of the moving seat during movement.

[0022] The main technical effects of this utility model are reflected in the following aspects:

[0023] 1. The robot arm of this utility model can stably fix the workpiece, unaffected by the failure of the drive source, thus improving the problem of unstable workpiece fixing that may occur with robot arms;

[0024] 2. This utility model transmits the power of the servo motor to the drive rod by setting a transmission gear set, so as to ultimately drive the driven helical gear to rotate;

[0025] 3. This utility model can protect the workpiece by setting a rubber abutment block and improve the tightness of the connection between the side support rod and the workpiece, thereby improving the fixation firmness of the side support rod to the workpiece. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a robotic arm for a compressor cylinder according to an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the mounting post and rotating gear assembly in an embodiment.

[0028] Figure 3This is a schematic diagram of the gripping component in an embodiment.

[0029] Figure 4 This is a schematic diagram of the driven helical gear and side support rod in the embodiment.

[0030] Figure 5 This is a schematic diagram of the structure of the driving groove in an embodiment.

[0031] Explanation of reference numerals in the attached drawings: 1. Robotic arm body; 2. Mounting base; 3. Moving base; 4. Gripping assembly; 41. Mounting column; 42. Side support rod; 43. Drive assembly; 431. Drive rod; 432. Drive helical gear; 433. Driven helical gear; 434. Servo motor; 5. Drive component; 6. Guide column; 7. Drive protrusion; 8. Drive groove; 9. Sliding groove; 10. Guide protrusion; 11. Guide groove; 12. Rubber abutment block; 13. Abutment arc surface; 14. Auxiliary gear set; 141. First auxiliary gear; 142. Second auxiliary gear; 15. Limiting block; 16. Transmission gear set; 161. First transmission gear; 162. Second transmission gear; 17. Mounting block; 18. Fixing block. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0033] This application discloses a robotic arm for compressor cylinders.

[0034] Reference Figure 1 This embodiment of a robotic arm for a compressor cylinder includes a robotic arm body 1, a mounting base 2 fixed to the robotic arm body, a movable base 3 slidably connected to the mounting base 2, a gripping assembly 4 mounted on the movable base 3, and a driving component 5 mounted on the mounting base 2. The driving component 5 drives the movable base 3 to slide on the mounting base 2 so that the gripping assembly 4 moves closer to or away from the workpiece. In this embodiment, the driving component 5 is a servo electric cylinder, which is fixed to the mounting base 2, and the output shaft of the servo electric cylinder is fixed to the movable base 3. Guide posts 6 are fixed at the four corners of the mounting base 2, and the guide posts 6 pass through the movable base 3. In this embodiment, four gripping assemblies 4 are installed so that the robotic arm can grip and fix four parts simultaneously. The position of the gripping assembly 4 corresponds to the relative position between the parts, so that the gripping assembly 4 is located directly above the parts.

[0035] Reference Figure 2 and Figure 3The clamping assembly 4 includes a mounting post 41, two side support rods 42 slidably connected within the mounting post 41, and a drive assembly 43 installed within the mounting post 41. The drive assembly 43 drives the two side support rods 42 to move away from or towards each other. A fixing block 18 is fixed inside the mounting post 41. The drive assembly 43 includes a drive rod 431 rotatably connected to the fixing block 18, a drive helical gear 432 coaxially fixed to the drive rod 431, a driven helical gear 433 rotatably connected to the fixing block 18, and a servo motor 434 that drives the drive rod 431 to rotate. The drive helical gear 432 and the driven helical gear 433 mesh with each other, and the rotation axis of the drive helical gear 432 is perpendicular to the rotation axis of the driven helical gear 433.

[0036] Reference Figure 3 and Figure 4 A drive protrusion 7 is fixed on the side of the driven helical gear 433 away from the fixed block 18. The drive protrusion 7 is an Archimedean spiral protrusion. A drive groove 8 is provided on the side support rod 42 to accommodate the drive protrusion 7. The mounting post 41 (see...) Figure 2 The side support rod 42 is provided with a sliding groove 9 (see) for sliding. Figure 2 The sliding groove 9 penetrates the side wall of the mounting column 41.

[0037] Reference Figure 3 and Figure 5 A guide protrusion 10 is fixed on one side of the side support rod 42, and a guide groove 11 is provided on the groove wall of the sliding groove 9 for the guide protrusion 10 to slide. A rubber abutment block 12 is fixed on the side of the side support rod 42 that is far apart from each other. The end of the rubber abutment block 12 is chamfered with an abutment arc surface 13, which is used to abut against the inner wall of the workpiece.

[0038] Reference Figure 2 and Figure 3 An auxiliary gear set 14 is mounted on the fixed block 18. The auxiliary gear set 14 includes a first auxiliary gear 141 and a second auxiliary gear 142. The first auxiliary gear 141 is rotatably connected to the fixed block 18, and the second auxiliary gear 142 is rotatably connected to the drive rod 431. The two sides of the first auxiliary gear 141 mesh with the driving helical gear 432 and the second auxiliary gear 142, respectively. The two sides of the second auxiliary gear 142 mesh with the driven helical gear 433 and the first auxiliary gear 141, respectively. A limit block 15 is fixed on the drive rod 431, and the limit block 15 is located on both radial sides of the second auxiliary gear 142.

[0039] Reference Figure 2 and Figure 3A transmission gear set 16 is mounted on the mounting post 41, and a mounting block 17 is fixed to the side wall of the mounting post 41. The servo motor 434 is fixed to the mounting block 17. The transmission gear set 16 includes a first transmission gear 161 and a second transmission gear 162. The first transmission gear 161 and the second transmission gear 162 mesh with each other. The first transmission gear 161 is coaxially fixed with the output shaft of the servo motor 434, and the second transmission gear 162 is coaxially fixed with the drive rod 431.

[0040] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A robotic arm for a compressor cylinder, characterized in that: The device includes a robot body (1), a mounting base (2) mounted on the robot body, a movable base (3) mounted on the mounting base (2), a gripping assembly (4) mounted on the movable base (3), and a driving component (5) mounted on the mounting base (2). The driving component (5) drives the movable base (3) to slide on the mounting base (2) so that the gripping assembly (4) moves closer to or away from the workpiece. The gripping assembly (4) includes a mounting post (41), two side support rods (42) slidably connected to the mounting post (41), and a driving assembly (43) disposed within the mounting post (41). A fixing block is provided on the mounting post (41). 18) The drive assembly (43) includes a drive rod (431) rotatably connected to the fixed block (18), a drive helical gear (432) coaxially fixed to the drive rod (431), a driven helical gear (433) rotatably connected to the fixed block (18), and a servo motor (434) for driving the drive rod (431) to rotate. The drive helical gear (432) and the driven helical gear (433) mesh with each other. The driven helical gear (433) has a drive protrusion (7) on the side away from the fixed block (18). The side support rod (42) has a drive groove (8) for the drive protrusion (7) to be accommodated.

2. The robotic arm for a compressor cylinder according to claim 1, characterized in that: The mounting column (41) is provided with a sliding groove (9) for the side support rod (42) to slide, and the sliding groove (9) penetrates the side wall of the mounting column (41).

3. A robotic arm for a compressor cylinder according to claim 1, characterized in that: The fixed block (18) is provided with an auxiliary gear set (14), which includes a first auxiliary gear (141) and a second auxiliary gear (142). The first auxiliary gear (141) is rotatably connected to the fixed block (18), and the second auxiliary gear (142) is rotatably connected to the drive rod (431). The two sides of the first auxiliary gear (141) are respectively engaged with the driving helical gear (432) and the second auxiliary gear (142), and the two sides of the second auxiliary gear (142) are respectively engaged with the driven helical gear (433) and the first auxiliary gear (141).

4. A robotic arm for a compressor cylinder according to claim 3, characterized in that: A limiting block (15) is fixed on the upper part of the drive rod (431), and the limiting block (15) is located on both radial sides of the second auxiliary gear (142).

5. A robotic arm for a compressor cylinder according to claim 1, characterized in that: The mounting post (41) is provided with a transmission gear set (16), and the side wall of the mounting post (41) is provided with a mounting block (17). The servo motor (434) is mounted on the mounting block (17). The transmission gear set (16) includes a first transmission gear (161) and a second transmission gear (162). The first transmission gear (161) and the second transmission gear (162) mesh with each other. The first transmission gear (161) is coaxially fixed with the output shaft of the servo motor (434), and the second transmission gear (162) is coaxially fixed with the drive rod (431).

6. A robotic arm for a compressor cylinder according to claim 2, characterized in that: The side support rod (42) has a guide protrusion (10) on one side, and the sliding groove (9) has a guide groove (11) for the guide protrusion (10) to slide on the groove wall.

7. A robotic arm for a compressor cylinder according to claim 1, characterized in that: The side support rods (42) are provided with rubber abutment blocks (12) on the side away from each other. The end of the rubber abutment block (12) is provided with an abutment arc surface (13), which is used to abut against the inner wall of the workpiece.

8. A robotic arm for a compressor cylinder according to claim 1, characterized in that: The driving component (5) is a servo electric cylinder, which is fixed on the mounting base (2). The output shaft of the servo electric cylinder is fixed to the moving base (3). The mounting base (2) has guide posts (6) at its four corners, and the guide posts (6) pass through the moving base (3).

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