Mechanical automatic grabbing device for assembly line
By designing an automated mechanical gripping device for production lines that includes a transposition box body, an electric push rod, and an auxiliary stabilizing part, the problem of unstable clamping in traditional devices is solved, multi-point stable clamping of workpieces is achieved, and the gripping stability is improved.
Patent Information
- Application Number
- CN202520352922.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Traditional automated gripping devices on production lines are prone to slippage and difficulty in firmly clamping workpieces, especially when gripping curved workpieces.
An automated mechanical gripping device for production lines is adopted, comprising a transposition box body, an electric push rod, a sliding box, a mechanical claw, and an auxiliary stabilizing part. Through the cooperation of a slide, a lead screw, a stepper motor, an oil chamber, and gears, the mechanical claw can achieve multi-point gripping and stable gripping.
It improves the clamping stability of workpieces, ensures a firm grip on both flat and curved workpieces, and reduces the occurrence of slippage.
Smart Images
Figure CN223865834U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical gripping technology, and in particular to an automatic mechanical gripping device for assembly lines. Background Technology
[0002] Automation refers to the process by which machines, systems, or processes achieve expected goals through automatic monitoring, information processing, analysis, judgment, and control, without the direct intervention of humans or with minimal human involvement, according to human requirements. This is particularly important in assembly line operations, where the gripping process requires secure gripping of workpieces to prevent loose gripping. However, traditional automated gripping systems on assembly lines typically suffer from the following problems:
[0003] First, in an assembly line, it is usually necessary to grip and reposition workpieces, which requires the workpieces to be firmly fixed. However, most clamping mechanisms use rigid clamping, which means that the clamped parts are all planar, making slippage very easy to occur.
[0004] Secondly, some workpieces have curved surfaces, making it difficult for traditional mechanical grippers to find a point of force for firm clamping. Therefore, it is necessary to increase the number of clamping points to ensure clamping stability.
[0005] To address this, we designed an automated mechanical gripping device for production lines. Utility Model Content
[0006] The purpose of this invention is to solve the problem that traditional mechanical grippers have difficulty finding a force point for firm clamping, and to propose an automated mechanical gripping device for assembly lines.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] An automated mechanical gripping device for an assembly line includes a transposition box body and an electric push rod. The transposition box body contains a first conveyor belt and a second conveyor belt with staggered heights, and workpieces to be gripped and transposed are placed on both conveyor belts. A U-shaped frame is provided on the inner wall of the transposition box body, and a sliding box slides on the U-shaped frame. An operating base is provided inside the sliding box, and a circumferentially arranged mechanical claw for gripping the workpiece is provided at the bottom of the operating base. The electric push rod is mounted on the operating base. The transposition box body also contains a trigger part for assisting in activating the electric push rod, and an auxiliary stabilizing part is provided inside the operating base for pushing the mechanical claw to firmly grip the workpiece.
[0009] Preferably, the triggering part includes:
[0010] A sliding groove is provided on a U-shaped frame. The sliding groove is inclined and a slider is provided in the sliding groove. The sliding box slides on the U-shaped frame through the slider and the sliding groove. A lead screw is provided in the sliding groove and passes through the slider. The lead screw is adapted to the slider. A stepper motor is provided in the body of the transposition box and the output end of the stepper motor is fixed to the lead screw.
[0011] The first baffle and the second baffle are respectively fixed to the inner wall of the transposition box body. The sliding box is provided with a first trigger button and a second trigger button on both sides. The first trigger button and the second trigger button are used to activate the extension and retraction of the electric push rod.
[0012] Preferably, the auxiliary stabilizing part includes:
[0013] A first oil chamber, in which a first piston slides, the output end of the electric push rod extends into the first oil chamber and is connected to the first piston, a through hole is provided at the bottom of the first oil chamber, and a lifting rod is inserted into the through hole, and a plurality of second oil chambers are provided on the side wall of the first oil chamber in a circular pattern.
[0014] The rotating cavity is circumferentially formed on the bottom side wall of the operating base, and the fixed shaft is fixed inside the rotating cavity. A gear rotates on the fixed shaft, and the mechanical claw is fixed to the side wall of the gear.
[0015] The toothed plate slides laterally within the second oil chamber via a second piston, and engages with a gear for transmission.
[0016] Preferably, the auxiliary stabilizing part further includes:
[0017] The first connecting hole and the second connecting hole are both opened inside the lifting rod, and the first connecting hole and the second connecting hole are vertically connected.
[0018] Multiple third connecting holes, the third connecting holes being L-shaped, are circumferentially formed at the bottom of the first oil cavity, and the third connecting holes are used to connect the first oil cavity and the first connecting holes;
[0019] The top of the lifting rod is provided with a top plate, and the top plate drives the lifting rod to rise and fall through a return spring sleeved on the outer wall of the lifting rod.
[0020] Preferably, the auxiliary stabilizing part further includes:
[0021] The telescopic box body is mounted on the mechanical gripper and is connected to the second connecting hole on the lifting rod via a rubber hose.
[0022] The mechanical claw has multiple telescopic holes, which are connected to the telescopic box body. The telescopic box body, the first oil chamber, and the second oil chamber are all filled with oil. Pushing blocks slide within the telescopic holes.
[0023] The beneficial effects of this utility model are as follows:
[0024] 1. In this utility model, the movement of oil in the second oil chamber will drive the toothed plate to move and mesh with the corresponding gear, thus completing the operation of driving the gear to rotate. Since the mechanical claw is fixed to the side wall of the gear, the rotation of the gear will drive the mechanical claw to rotate, thus completing one clamping of the workpiece.
[0025] 2. In this utility model, during the oil filling process of the telescopic box body, the push block will be pushed out of the telescopic hole, so that the mechanical claw that originally held the surface of the workpiece becomes multiple clamps that are adapted to the surface of the workpiece, thereby increasing the force points and achieving the effect of secondary clamping and stable clamping. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of an automated mechanical gripping device for an assembly line proposed in this utility model;
[0027] Figure 2 This is a front view of an automated mechanical gripping device for an assembly line proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the diversion mechanism in an automated mechanical gripping device for an assembly line proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the clamping mechanism in an automated mechanical gripping device for assembly lines proposed in this utility model.
[0030] In the diagram: 1. Transposition box body; 2. First conveyor belt; 3. Second conveyor belt; 4. U-shaped frame; 5. Slide chute; 6. Sliding box; 7. Workpiece; 8. Mechanical gripper; 9. First baffle; 10. Second baffle; 11. First trigger button; 12. Second trigger button; 13. Operating base; 14. Electric push rod; 15. First piston; 16. First oil chamber; 17. Telescopic box body; 18. Rubber hose; 19. Second oil chamber; 20. Gear plate; 21. Gear; 22. Fixed shaft; 23. Second piston; 24. Lifting rod; 25. Top plate; 26. Return spring; 27. First connecting hole; 28. Second connecting hole; 29. Third connecting hole; 30. Push block. Detailed Implementation
[0031] Reference Figures 1-4An automated mechanical gripping device for an assembly line includes a transposition box body 1 and an electric push rod 14. The transposition box body 1 is equipped with a first conveyor belt 2 and a second conveyor belt 3 that are staggered in height. Workpieces 7 to be gripped and transposed are placed on both the first conveyor belt 2 and the second conveyor belt 3. During operation, the workpieces 7 located on the first conveyor belt 2 need to be clamped onto the second conveyor belt 3 to complete the transposition operation. The first conveyor belt 2 and the second conveyor belt 3 are driven by external transmission devices.
[0032] Reference Figure 1 and Figure 2 The inner wall of the transposition box body 1 is provided with a U-shaped frame 4, and a sliding box 6 slides on the U-shaped frame 4. The transposition box body 1 is also provided with a trigger part for assisting in opening the electric push rod 14. The trigger part is designed to ensure that the electric push rod 14 inside can be triggered to open when the sliding box 6 slides to both ends of the slide groove 5.
[0033] The triggering part includes a slide groove 5 on the U-shaped frame 4. The slide groove 5 is inclined and has a slider inside. The sliding box 6 slides on the U-shaped frame 4 through the slider and the slide groove 5. A lead screw is provided in the slide groove 5, which is adapted to the slider. The shift box body 1 is equipped with a stepper motor, and the output end of the stepper motor is fixed to the lead screw. In this way, when the stepper motor is turned on, it drives the lead screw to rotate in both directions. The slider has a threaded groove, which is adapted to the lead screw, and drives the sliding box 6 to slide inclinedly along the slide groove 5 on the U-shaped frame 4.
[0034] The triggering unit also includes a first baffle 9 and a second baffle 10, which are fixed to the inner wall of the transposition box body 1. A first trigger button 11 and a second trigger button 12 are respectively provided on both sides of the sliding box 6. The first trigger button 11 and the second trigger button 12 are used to activate the extension and retraction of the electric push rod 14. It should be noted that when the sliding box 6 slides to the end of the slide chute 5 near the first conveyor belt 2 and touches the first baffle 9, the first baffle 9 will press the first trigger button 11 to drive the output end of the electric push rod 14 in the sliding box 6 to press down. At the same time, after the workpiece 7 is gripped, the stepper motor drives the lead screw to reverse, so that the sliding box 6 with the workpiece 7 moves diagonally upward until it touches the second baffle 10 and touches the second trigger button 12 to drive the output end of the electric push rod 14 in the sliding box 6 to move upward, thereby releasing the workpiece 7. After the workpiece 7 is released, the stepper motor drives the lead screw to reverse again, thereby completing the previous cycle step.
[0035] The sliding box 6 is provided with an operating base 13, and the bottom of the operating base 13 is provided with a mechanical claw 8 arranged in a circle for gripping the workpiece 7. The electric push rod 14 is provided on the operating base 13. The operating base 13 is provided with an auxiliary stabilizing part for pushing the mechanical claw 8 to firmly clamp the workpiece 7. The setting of the auxiliary stabilizing part ensures the effect of improving the clamping force point.
[0036] The auxiliary stabilizing part includes a first oil chamber 16, in which a first piston 15 slides. The output end of an electric push rod 14 extends into the first oil chamber 16 and is connected to the first piston 15. A through hole is provided at the bottom of the first oil chamber 16, and a lifting rod 24 is inserted into the through hole. Multiple second oil chambers 19 are provided in a circular pattern on the side wall of the first oil chamber 16. In this way, the oil in the first oil chamber 16 and the second oil chambers 19 will move when the output end of the electric push rod 14 moves up and down.
[0037] The auxiliary stabilizing part also includes a rotating cavity and a fixed shaft 22. The rotating cavity is circumferentially formed on the bottom side wall of the operating base 13. The fixed shaft 22 is fixed inside the rotating cavity. A gear 21 rotates on the fixed shaft 22. The toothed plate 20 slides laterally in the second oil chamber 19 through the second piston 23, and the toothed plate 20 meshes with the gear 21 for transmission. In this way, the movement of the oil in the second oil chamber 19 will drive the toothed plate 20 to move and mesh with the corresponding gear 21, completing the operation of driving the gear 21 to rotate. Since the mechanical claw 8 is fixed to the side wall of the gear 21, the rotation of the gear 21 will drive the mechanical claw 8 to rotate, completing one clamping of the workpiece 7.
[0038] The auxiliary stabilizing part also includes a first connecting hole 27 and a second connecting hole 28. Both the first connecting hole 27 and the second connecting hole 28 are opened inside the lifting rod 24 and are vertically connected. The third connecting hole 29 is L-shaped and multiple third connecting holes 29 are circumferentially opened at the bottom of the first oil cavity 16. The third connecting hole 29 is used to connect the first oil cavity 16 and the first connecting hole 27. In this way, when the lifting rod 24 descends, the third connecting hole 29 plays the role of connecting the first oil cavity 16 and the second connecting hole 28, thereby squeezing the pressurized oil into the telescopic box body 17 through the rubber hose 18.
[0039] The top of the lifting rod 24 is provided with a top plate 25, and the top plate 25 drives the lifting rod 24 to rise and fall through the return spring 26 sleeved on the outer wall of the lifting rod 24. It should be noted that when the first oil chamber 16 is under high pressure, the oil will first push the toothed plate 20 in the second oil chamber 19 to slide laterally and engage to drive the mechanical claw 8 to rotate. When the mechanical claw 8 clamps the object and cannot rotate, it will press the lifting rod 24 down and connect the first oil chamber 16 with the second connecting hole 28 to realize the oil filling operation of the telescopic box body 17.
[0040] When the first oil chamber 16 is under low pressure, the toothed plate 20 will move toward the first oil chamber 16, thus releasing the workpiece 7. When the second piston 23 touches each other and can no longer rotate the mechanical claw 8, the lifting rod 24 will be pulled up, so that the first connecting hole 27 is directly connected to the first oil chamber 16. During the oil extraction operation, the oil extraction operation of the telescopic box body 17 can be realized.
[0041] The auxiliary stabilizing part also includes a telescopic box body 17, which is mounted on the mechanical claw 8. The telescopic box body 17 is connected to the second connecting hole 28 on the lifting rod 24 via a rubber hose 18. The mechanical claw 8 has multiple telescopic holes, which are connected to the telescopic box body 17. The telescopic box body 17, the first oil chamber 16, and the second oil chamber 19 are all filled with oil. Pushing blocks 30 slide within the telescopic holes. During the oil filling process of the telescopic box body 17, the pushing blocks 30 are pushed out of the telescopic holes, thereby making the mechanical claw 8, which originally held the surface of the workpiece 7, become multiple clamps adapted to the surface of the workpiece 7, thus increasing the force points and achieving the effect of secondary clamping and stable clamping.
[0042] The working principle of this utility model is as follows:
[0043] First, the external transmission device is activated to drive the transmission of the first conveyor belt 2 and the second conveyor belt 3. The stepper motor drives the lead screw to rotate in both directions. The slider has a threaded groove, which, in conjunction with the lead screw, drives the sliding box 6 to slide along the groove 5 on the U-shaped frame 4.
[0044] When the sliding box 6 slides to the end of the chute 5 near the first conveyor belt 2 and touches the first baffle 9, the first baffle 9 will press the first trigger button 11 to drive the output end of the electric push rod 14 in the sliding box 6 to press down. At the same time, after the workpiece 7 is gripped, the stepper motor drives the lead screw to reverse, so that the sliding box 6 with the workpiece 7 moves diagonally upward until it touches the second baffle 10 and touches the second trigger button 12 to drive the output end of the electric push rod 14 in the sliding box 6 to move upward, thereby releasing the workpiece 7. After the workpiece 7 is released, the stepper motor drives the lead screw to reverse again, thereby completing the previous cycle.
[0045] The movement of the oil in the second oil chamber 19 will drive the toothed plate 20 to move and mesh with the corresponding gear 21, thus completing the operation of driving the gear 21 to rotate. Since the mechanical claw 8 is fixed to the side wall of the gear 21, the rotation of the gear 21 will drive the mechanical claw 8 to rotate, thus completing one clamping of the workpiece 7.
[0046] During the oil filling process of the telescopic box body 17, the push block 30 will be pushed out of the telescopic hole, so that the mechanical claw 8 that originally held the surface of the workpiece 7 becomes multiple clamps that are adapted to the surface of the workpiece 7, thereby increasing the force points and achieving the effect of secondary clamping and stable clamping.
[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A mechanical automatic gripping device for an assembly line, comprising a transposition box body (1) and an electric push rod (14), characterized in that, The transposition box body (1) is provided with a first conveyor belt (2) and a second conveyor belt (3) with different heights. The first conveyor belt (2) and the second conveyor belt (3) are both placed with workpieces (7) to be gripped and transposed. The inner wall of the transposition box body (1) is provided with a U-shaped frame (4). A sliding box (6) slides on the U-shaped frame (4). An operating base (13) is provided in the sliding box (6). The bottom of the operating base (13) is provided with a mechanical claw (8) arranged in a circle for gripping the workpiece (7). The electric push rod (14) is provided on the operating base (13). The transposition box body (1) is also provided with a trigger part for assisting in opening the electric push rod (14). The operating base (13) is provided with an auxiliary stabilizing part for pushing the mechanical claw (8) to firmly clamp the workpiece (7).
2. The automated mechanical gripping device for an assembly line according to claim 1, characterized in that, The triggering unit includes: A sliding groove (5) is provided on the U-shaped frame (4). The sliding groove (5) is inclined and a slider is provided in the sliding groove (5). The sliding box (6) slides on the U-shaped frame (4) through the slider and the sliding groove (5). A lead screw is provided in the sliding groove (5) and it is adapted to the slider. A stepper motor is provided in the body (1) of the transposition box and the output end of the stepper motor is fixed to the lead screw. The first baffle (9) and the second baffle (10) are fixed to the inner wall of the transposition box body (1) respectively. The sliding box (6) is provided with a first trigger button (11) and a second trigger button (12) on both sides respectively. The first trigger button (11) and the second trigger button (12) are used to activate the extension and retraction of the electric push rod (14).
3. The automated mechanical gripping device for an assembly line according to claim 1, characterized in that, The auxiliary stabilizing part includes: The first oil chamber (16) has a first piston (15) sliding inside it. The output end of the electric push rod (14) extends into the first oil chamber (16) and is connected to the first piston (15). A through hole is provided at the bottom of the first oil chamber (16), and a lifting rod (24) is inserted into the through hole. Multiple second oil chambers (19) are provided on the side wall of the first oil chamber (16) in a circular pattern. The rotating cavity and the fixed shaft (22) are arranged in a circular shape on the bottom side wall of the operating base (13). The fixed shaft (22) is fixed in the rotating cavity. A gear (21) rotates on the fixed shaft (22). The mechanical claw (8) is fixed to the side wall of the gear (21). The toothed plate (20) slides laterally in the second oil chamber (19) via the second piston (23), and the toothed plate (20) meshes with the gear (21) for transmission.
4. The automated mechanical gripping device for an assembly line according to claim 3, characterized in that, The auxiliary stabilizing part also includes: The first connecting hole (27) and the second connecting hole (28) are both opened inside the lifting rod (24), and the first connecting hole (27) and the second connecting hole (28) are vertically connected; Multiple third connecting holes (29) are L-shaped and are circumferentially opened at the bottom of the first oil cavity (16), and the third connecting holes (29) are used to connect the first oil cavity (16) and the first connecting hole (27). The top of the lifting rod (24) is provided with a top plate (25), and the top plate (25) drives the lifting rod (24) to rise and fall through a reset spring (26) sleeved on the outer wall of the lifting rod (24).
5. The automated mechanical gripping device for an assembly line according to claim 4, characterized in that, The auxiliary stabilizing part also includes: Telescopic box body (17), the telescopic box body (17) is mounted on the mechanical claw (8), and the telescopic box body (17) is connected to the second connecting hole (28) on the lifting rod (24) through the rubber hose (18); The mechanical claw (8) has multiple telescopic holes, and the telescopic holes are connected to the telescopic box body (17). The telescopic box body (17), the first oil chamber (16), and the second oil chamber (19) are all filled with oil. The telescopic hole has a sliding push block (30).