Multi-station movable mechanical arm for workpiece assembly

Abstract

The utility model belongs to the technical field of mechanical arms for workpiece assembly, and particularly relates to a multi-station movable mechanical arm for workpiece assembly, which comprises an air cylinder, a mounting plate is fixed on the bottom side of the air cylinder, the acting end of the air cylinder penetrates through a through hole and is fixedly connected with a connecting block, side lugs are mounted on two sides of the mounting plate, and connecting plates are mounted in the side lugs. Grooves are formed in the two ends of each connecting block, connecting rods are installed in the grooves, one ends of the connecting rods are installed in the through grooves, sliding grooves are formed in the fixing plates, sliding blocks are installed in the sliding grooves in a sliding mode, and clamping plates are fixedly connected to one sides of the sliding blocks. The acting end of an air cylinder is controlled to retract, so that a connecting block moves along with the acting end, a connecting plate and a fixing plate are made to be close to the two sides of a workpiece through the linkage effect of a connecting rod, clamping plates are driven to fix the workpiece, sliding blocks can slide in sliding grooves, the clamping plates are replaced, and the device can adapt to workpieces of different sizes and shapes; the applicability of the mechanical arm is improved, and the workpiece assembling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms for workpiece assembly, in particular to a multi-station mobile mechanical arm for workpiece assembly. Background Art

[0002] A robotic arm is an automatic device that can imitate certain movements of the human arm and grab and move objects according to a fixed program. In the assembly process of workpieces of some precision instruments, a robotic arm is needed to move the workpiece between multiple workstations to improve assembly efficiency.

[0003] A Chinese patent with announcement number CN212170458U discloses a movable multi-station logistics manipulator, including a placement slot, a third bearing, an I-beam, a fourth bearing and a support wheel. When the clamping is larger, the two sets of I-beams are rotated out through the third bearing, and the support wheel can play a supporting role. A trapezoid is formed between the side of the support seat and the I-beam, which can increase the support area and prevent the larger clamping device from tipping over.

[0004] However, the above-mentioned robotic arm still has some problems. In the prior art, it is impossible to effectively clamp workpieces of various specifications and shapes, which will cause unstable clamping of the workpieces during the assembly process, thus affecting the effect of workpiece assembly. Therefore, in order to solve the above-mentioned problem, a multi-station mobile robotic arm for workpiece assembly is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised in the background technology, the utility model proposes a multi-station mobile mechanical arm for workpiece assembly.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: a multi-station mobile mechanical arm for workpiece assembly described in the utility model comprises a workbench, a clamping assembly is installed above the workbench, the clamping assembly comprises a cylinder, a mounting plate is fixedly provided on the bottom side of the cylinder, a through hole is provided inside the mounting plate, an active end of the cylinder passes through the through hole and is fixedly connected with a connecting block, side ears are installed on both sides of the mounting plate, a connecting plate is installed inside the side ears through a pin shaft, grooves are provided at both ends of the connecting block, a connecting rod is installed inside the groove through a pin shaft, a through groove is provided inside the connecting plate, one end of the connecting rod is installed inside the through groove through a pin shaft, a fixing plate is fixedly connected to the bottom side of the connecting plate, a sliding groove is provided inside the fixing plate, a sliding block is slidably installed inside the sliding groove, a clamping plate is fixedly connected to one side of the sliding block, the mechanical arm can adapt to workpieces of different sizes and shapes, the applicability of the mechanical arm is improved, and the effect of workpiece assembly is improved.

[0007] Preferably, a locking screw is rotatably installed inside the fixing plate, and one end of the locking screw and the other side of the sliding block are pressed against each other to fix the clamping plate and improve stability during the clamping process.

[0008] Preferably, a hollow cavity is provided inside the workbench, a servo motor is installed inside the bottom side of the hollow cavity, a fan-shaped disk is installed at the output end of the servo motor, a connecting rod is installed at the bottom side of the fan-shaped disk, a convex rod is fixedly connected to the bottom side of one end of the connecting rod, a rotating shaft is rotatably installed inside the hollow cavity, a circular disk is installed on the outer wall of the rotating shaft, four arc-shaped grooves matching the fan-shaped disk and a U-shaped groove matching the convex rod are respectively provided inside the circular disk, and the arc-shaped grooves and the U-shaped grooves are staggered with each other, so that the clamping assembly can be accurately moved between multiple workstations, thereby improving the degree of automation and efficiency of workpiece assembly.

[0009] Preferably, the top end of the rotating shaft rotates and extends above the workbench and is fixedly connected to a support plate, a support column is installed on the top side of the support plate, a telescopic rod is installed on the bottom side of one end of the support column, and the active end of the telescopic rod is fixedly connected to the top side of the cylinder, so that the clamping assembly can operate flexibly between workstations at different heights, further improving the flexibility and efficiency of assembly.

[0010] Preferably, a placement plate is fixedly connected to the top side of the workbench, and four processing plates are equidistantly installed at the top edge of the placement plate, wherein the clamping assembly is located directly above the processing plate during operation, so as to facilitate placing the workpieces to be assembled on the top sides of the processing plates respectively, thereby ensuring the smooth progress of the assembly process.

[0011] Preferably, a control panel is installed on one side of the workbench, and the control panel is used to control the operation of the electrical components inside the device, thereby realizing centralized control of the electrical components inside the device and improving the convenience of the device.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model controls the cylinder action end to retract, so that the connecting block moves accordingly. Through the linkage of the connecting rod, the connecting plate and the fixing plate are close to the two sides of the workpiece, driving the clamping plate to fix the workpiece. The slider can slide in the slide groove to replace the clamping plate, so as to adapt to workpieces of different sizes and shapes, improve the applicability of the robot arm, and improve the effect of workpiece assembly;

[0014] 2. The utility model drives the sector disk to rotate through a servo motor, which in turn drives the connecting rod and the convex rod to move. The convex rod will rotate into a U-shaped groove, and when it is disengaged from the current U-shaped groove, it will push the disk to rotate a certain angle, thereby driving the entire clamping assembly to move at a corresponding angle, so that one of the workpieces can be moved between multiple workstations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a schematic diagram of the structure of the medium axis side view of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the clamping assembly;

[0018] Figure 3 It is a schematic diagram of the structure of a multi-station mobile component;

[0019] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A.

[0020] In the figure: 1. workbench; 2. cylinder; 3. mounting plate; 4. connecting block; 5. side ear; 6. connecting plate; 7. connecting rod; 8. through groove; 9. fixing plate; 10. slide groove; 11. slider; 12. clamping plate; 13. locking screw; 14. cavity; 15. servo motor; 16. sector disk; 17. connecting rod; 18. convex rod; 19. rotating shaft; 20. circular disk; 21. arc groove; 22. U-shaped groove; 23. support plate; 24. support column; 25. telescopic rod; 26. placement disk; 27. processing disk; 28. control panel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2As shown, a multi-station mobile robot arm for workpiece assembly comprises a workbench 1, a clamping assembly is installed above the workbench 1, the clamping assembly comprises a cylinder 2, a mounting plate 3 is fixed to the bottom side of the cylinder 2, a through hole is provided inside the mounting plate 3, the working end of the cylinder 2 passes through the through hole and is fixedly connected to a connecting block 4, side ears 5 are provided on both sides of the mounting plate 3, a connecting plate 6 is installed inside the side ears 5 through a pin shaft, grooves are provided at both ends of the connecting block 4, a connecting rod 7 is installed inside the groove through a pin shaft, a through groove 8 is provided inside the connecting plate 6, one end of the connecting rod 7 is installed inside the through groove 8 through a pin shaft, a fixing plate 9 is fixedly connected to the bottom side of the connecting plate 6, a sliding groove 10 is provided inside the fixing plate 9, a sliding groove 10 is slidably installed inside the sliding groove 10 Block 11, one side of the slider 11 is fixedly connected with a clamping plate 12, and a locking screw 13 is rotatably installed inside the fixing plate 9; during operation, in the prior art, effective clamping cannot be achieved for workpieces of various specifications and shapes, which will cause unstable clamping of the workpiece during assembly, thereby affecting the effect of workpiece assembly. When the workpiece needs to be clamped, the working end of the cylinder 2 is controlled to retract, so that the connecting block moves accordingly, and through the linkage action of the connecting rod 7, the connecting plate 6 and the fixing plate 9 will be close to the two sides of the workpiece, driving the clamping plate 12 to fix the workpiece. During operation, the locking screw 13 can be used to make the slider 11 slide inside the slide groove 10, and then the clamping plate 12 can be replaced, so that it can adapt to workpieces of different sizes and shapes, improve the applicability of the robot arm, and improve the effect of workpiece assembly.

[0023] See also Figure 1 , 3As shown in Figure 4, a cavity 14 is provided inside the workbench 1, a servo motor 15 is installed inside the bottom side of the cavity 14, a sector disk 16 is installed at the output end of the servo motor 15, a connecting rod 17 is installed at the bottom side of the sector disk 16, a convex rod 18 is fixed to the bottom side of one end of the connecting rod 17, a rotating shaft 19 is rotatably installed inside the cavity 14, a disc 20 is installed on the outer wall of the rotating shaft 19, four arc grooves 21 matching the sector disk 16 and a U-shaped groove 22 matching the convex rod 18 are respectively provided inside the disc 20, and the arc grooves 21 and the U-shaped grooves 22 are staggered with each other, and a control surface is installed on one side of the workbench 1 Plate 28; when working, in the process of assembling workpieces of some precision instruments, a mechanical arm is needed to move the workpiece between multiple stations to improve the efficiency of assembly. The fan-shaped disk 16 is driven to rotate by the servo motor 15, and its edge will rotate along the arc groove 21, thereby driving the connecting rod 17 and the protruding rod 18 to move. The protruding rod 18 will rotate to the inside of a U-shaped groove 22, and when it is disengaged from the current U-shaped groove 22, it will push the disc 20 to rotate a certain angle, thereby driving the entire clamping assembly to move at a corresponding angle, so that one of the workpieces can be moved between multiple stations, so that the assembly operation of the workpiece can be gradually carried out.

[0024] See also Figure 1 As shown, the top end of the rotating shaft 19 rotates and extends to the top of the workbench 1 and is fixedly connected to a support plate 23, a support column 24 is installed on the top side of the support plate 23, a telescopic rod 25 is installed on the bottom side of one end of the support column 24, and the active end of the telescopic rod 25 is fixedly connected to the top side of the cylinder 2, and a placement disk 26 is fixedly connected to the top side of the workbench 1, and four processing disks 27 are equidistantly installed at the top side edge of the placement disk 26, wherein the clamping assembly is located directly above the processing disk 27 during operation; during operation, in actual application, the operator usually places the workpieces to be assembled on the processing disk 27 in sequence, and performs step-by-step assembly operations. When the clamping assembly moves to the top of the target station, the telescopic rod 25 starts to work, and adjusts the height of the clamping assembly by extending, so that the workpiece clamped inside the clamping assembly can be accurately dropped above the workpiece on another processing disk 27, and then the workpiece is released by extending the active end of the cylinder 2, so that the assembly operation of the workpiece can be gradually carried out, ensuring the smooth progress of the workpiece assembly operation.

[0025] Working principle: In practical applications, operators usually place the workpieces to be assembled on the processing disk 27 in sequence and perform step-by-step assembly operations. When the workpiece needs to be clamped, the working end of the cylinder 2 is controlled to retract, so that the connecting block moves accordingly. Through the linkage action of the connecting rod 7, the connecting plate 6 and the fixing plate 9 are close to the two sides of the workpiece, driving the clamping plate 12 to fix the workpiece. During the operation, the slider 11 can slide inside the slide groove 10 through the cooperation of the locking screw 13, and then the clamping plate 12 can be replaced, so that it can adapt to workpieces of different sizes and shapes, improve the applicability of the robot arm, and improve the effect of workpiece assembly;

[0026] The servo motor 15 drives the sector disk 16 to rotate, and its edge rotates along the arc groove 21, thereby driving the connecting rod 17 and the convex rod 18 to move. The convex rod 18 rotates to the inside of a U-shaped groove 22, and when it is disengaged from the current U-shaped groove 22, it pushes the disc 20 to rotate at a certain angle, thereby driving the entire clamping assembly to move at a corresponding angle, so that one of the workpieces can be moved between multiple stations, so that the workpiece assembly operation can be gradually carried out.

[0027] When the clamping assembly moves to the top of the target workstation, the telescopic rod 25 starts to work and adjusts the height of the clamping assembly by extending, so that the workpiece clamped inside the clamping assembly can be accurately dropped above the workpiece on another processing disk 27. The workpiece is then released by extending the working end of the cylinder 2, so that the assembly operation of the workpiece can be gradually carried out, ensuring the smooth progress of the workpiece assembly operation.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A multi-station mobile robot arm for workpiece assembly, characterized in that: The invention comprises a workbench (1), a clamping assembly is installed above the workbench (1), the clamping assembly comprises a cylinder (2), a mounting plate (3) is fixed to the bottom side of the cylinder (2), a through hole is provided inside the mounting plate (3), the working end of the cylinder (2) passes through the through hole and is fixedly connected to a connecting block (4), side ears (5) are installed on both sides of the mounting plate (3), a connecting plate (6) is installed inside the side ears (5) through a pin shaft, and both ends of the connecting block (4) are A groove is provided, a connecting rod (7) is installed inside the groove by means of a pin shaft, a through groove (8) is provided inside the connecting plate (6), one end of the connecting rod (7) is installed inside the through groove (8) by means of a pin shaft, a fixing plate (9) is fixedly connected to the bottom side of the connecting plate (6), a sliding groove (10) is provided inside the fixing plate (9), a sliding block (11) is slidably installed inside the sliding groove (10), and a clamping plate (12) is fixedly connected to one side of the sliding block (11).

2. A multi-station mobile robot arm for workpiece assembly according to claim 1, characterized in that: A locking screw (13) is rotatably mounted inside the fixing plate (9), and one end of the locking screw (13) is pressed against the other side of the sliding block (11).

3. A multi-station mobile robot arm for workpiece assembly according to claim 2, characterized in that: The workbench (1) is provided with a cavity (14) inside, a servo motor (15) is installed inside the bottom side of the cavity (14), a fan-shaped disk (16) is installed at the output end of the servo motor (15), a connecting rod (17) is installed on the bottom side of the fan-shaped disk (16), a convex rod (18) is fixedly connected to the bottom side of one end of the connecting rod (17), a rotating shaft (19) is rotatably installed inside the cavity (14), a circular disk (20) is installed on the outer wall of the rotating shaft (19), and the circular disk (20) is provided with four arc-shaped grooves (21) matched with the fan-shaped disk (16) and a U-shaped groove (22) matched with the convex rod (18), and the arc-shaped grooves (21) and the U-shaped grooves (22) are arranged alternately.

4. The multi-station mobile robot arm for workpiece assembly according to claim 3, characterized in that: The top end of the rotating shaft (19) rotates and extends through the top of the workbench (1) and is fixedly connected to a support plate (23). A support column (24) is installed on the top side of the support plate (23). A telescopic rod (25) is installed on the bottom side of one end of the support column (24). The active end of the telescopic rod (25) is fixedly connected to the top side of the cylinder (2).

5. The multi-station mobile robot arm for workpiece assembly according to claim 4, characterized in that: A placement plate (26) is fixedly connected to the top side of the workbench (1), and four processing plates (27) are equidistantly installed at the top side edge of the placement plate (26), wherein the clamping assembly is located directly above the processing plate (27) during operation.

6. A multi-station mobile robot arm for workpiece assembly according to claim 5, characterized in that: A control panel (28) is installed on one side of the workbench (1), and the control panel (28) is used to control the operation of electrical components inside the device.

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