Visual positioning mechanism of hand wheel assembling machine

Abstract

The utility model provides a visual positioning mechanism of a hand wheel assembling machine, which relates to the technical field of visual positioning of hand wheel assembling and comprises a tool table mounted in the hand wheel assembling machine and a visual camera for positioning a mechanical arm. The center of the table top of the tool table is hollowed out, a partition plate used for covering the hollowed-out position is embedded in the tool table in a sliding connection mode, by arranging the partition plate installed in a sliding mode, when the visual camera is used, the visual camera moves to the dead center of the hollowed-out position of the tool table, and in the hand wheel assembling process of the tool table, the visual camera moves to be staggered from the hollowed-out position; and the hollowed-out part of the tool table is blocked by the partition plate, so that chippings or water generated in the assembly process cannot flow to the surface of the visual camera.

Description

Technical Field

[0001] The utility model relates to the technical field of visual positioning of hand wheel assembly, in particular to a visual positioning mechanism of a hand wheel assembly machine. Background Art

[0002] Handwheel assembly refers to using a robotic arm to place the various parts of the handwheel into the handwheel assembly machine in sequence, using the corresponding mechanisms in the handwheel assembly machine to splice and fix the various parts of the handwheel, and then using the robotic arm again to take out the assembled handwheel. When the robotic arm raises and lowers the handwheel, a corresponding visual positioning device is required to ensure the accuracy of the installation position.

[0003] For example, a visual positioning mechanism, publication number: CN219417179U, includes a frame, the frame is a U-shaped structure, a horizontally arranged screw is rotatably connected in the frame, one end of the screw is fixedly connected to the output end of the servo motor, the servo motor is fixedly connected to the frame, a movable seat is threadedly connected to the screw, the upper end of the movable seat is in sliding contact with the top of the frame, a visual camera is installed on the lower surface of the movable seat, a horizontally arranged top plate is provided on the upper side of the frame, two vertically arranged electric push rods are symmetrically fixedly connected to the lower surface of the top plate, the movable end of the electric push rod is fixedly connected to the frame, two mounting holes for inserting bolts are symmetrically provided on the upper surface of the top plate, and the movable seat is threadedly connected to the screw through a connecting piece.

[0004] However, the visual camera is directly exposed to the air when in use. When the handwheel assembly machine is actually in operation, a threaded drill may be used to process the internal thread, and water spraying may be used to cool down and remove chips when drilling the threaded holes. Therefore, when the prior art is used in the handwheel assembly machine, it is easy for the surface of the visual camera to be scratched by iron chips in the water flow. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a visual positioning mechanism for a hand wheel assembly machine.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a visual positioning mechanism of a handwheel assembly machine, comprising a tool table for installation in the handwheel assembly machine and a visual camera for positioning a robotic arm, the center of the tool table surface is hollowed out, and a partition for covering the hollowed-out part is slidably embedded in the tool table, one side of the partition extends to the bottom of the tool table and is slidably embedded in the bottom surface of the tool table, and a strip for installing a visual camera is inserted on one side of the hollowed-out part of the bottom surface of the tool table, the bottom edge of the strip is fixedly connected to an external rack, and an external gear meshing with the external rack is arranged under the tool table, the top of the external gear is fixedly connected to a winding reel rotatably connected to the bottom surface of the tool table, the bottom surface of the tool table is also plugged with a connecting rod fixed to the extension of the partition, and a swing arm rotatably connected, one end of the swing arm is used to contact the end of the connecting rod, and the other end is connected to the free end of the wire wound on the winding reel.

[0007] Preferably, a spiral spring is connected between the cable reel and the tool bench, one end of the connecting rod away from the partition is inclined, and an electric push rod for pushing the connecting rod is fixedly connected to the bottom surface of the tool bench.

[0008] Preferably, a cavity is provided in the tool bench above the partition, a portion of the cavity is arranged in a ring shape around the hollow part of the tool bench, and another portion is arranged linearly along the sliding direction of the partition, a plurality of rotating rods are rotatably connected to the inner wall of the hollow part of the tool bench, and a plurality of rotating rods are fixedly connected to a waterproof cloth on one side of the hollow part of the tool bench.

[0009] Preferably, one end of the rotating rod extends into the annular portion of the cavity and is fixedly connected to a bevel gear block, and the inner wall of the annular portion of the cavity is rotatably connected to a bevel gear ring meshing with a plurality of bevel gear blocks.

[0010] Preferably, an internal rack meshing with the side of the bevel gear ring is slidably connected in the linear part of the cavity, and the bottom edge of the linear part of the cavity is connected to the partition, one side of the partition extends into the cavity and is connected to the internal rack by a spring rod.

[0011] Preferably, a stopper for resisting the internal rack is fixedly connected to the bottom edge of the linear portion in the cavity.

[0012] Preferably, drainage holes are provided on the surface of the partition.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, a slidably installed partition is provided, and when the visual camera is in use, the visual camera moves to the center of the hollow part of the tool table. During the hand wheel assembly process of the tool table, the visual camera moves to a position misaligned with the hollow part, and the hollow part of the tool table is blocked with the partition, thereby ensuring that debris or water generated during the assembly process will not flow to the surface of the visual camera.

[0015] 2. In the utility model, by setting a rotating rod, when the partition moves, the rotating rod is rotated to one side parallel to the central axis of the hollow part, so that the waterproof cloth is opened in a cylindrical shape, which can prevent the water remaining on the surface of the tool table from dripping along the edge of the hollow part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a visual positioning mechanism of a hand wheel assembly machine is proposed for the utility model;

[0017] Figure 2 The utility model proposes a visual positioning mechanism for a hand wheel assembly machine Figure 1 Schematic diagram of the structure viewed from above;

[0018] Figure 3 The utility model proposes a visual positioning mechanism for a hand wheel assembly machine Figure 1 A schematic cross-sectional structure diagram of;

[0019] Figure 4 Schematic diagram of the top view of the partition;

[0020] Figure 5 This is a schematic diagram of the structure of the partition from above.

[0021] Legend: 1. Tool table; 2. Partition; 3. Drain hole; 4. Electric push rod; 5. Connecting rod; 6. Insert strip; 7. Vision camera; 8. External rack; 9. External gear; 10. Swing arm; 11. Cable reel; 12. Volute spring; 13. Waterproof cloth; 14. Turning rod; 15. Bevel gear block; 16. Bevel gear ring; 17. Spring rod; 18. Internal rack; 19. Stopper; 20. Cavity. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] like Figure 1-4 As shown, a visual positioning mechanism of a handwheel assembly machine includes a tool bench 1 for installation in the handwheel assembly machine and a visual camera 7 for positioning a robot arm. The visual camera 7 can be used to determine the relative position of the robot arm and the tool bench 1. The center of the tool bench 1 is hollowed out, and a partition 2 for covering the hollowed-out part is embedded and slidably connected inside the tool bench 1. When the visual camera 7 is used, it moves to the center of the hollowed-out part of the tool bench 1. During the handwheel assembly process of the tool bench 1, the visual camera 7 moves to be misaligned with the hollowed-out part, and the hollowed-out part is blocked by the partition 2, thereby ensuring that debris or water generated during the assembly process will not flow to the surface of the visual camera 7. In addition, a drainage hole 3 is provided on the surface of the partition 2, and as shown Figure 2 As shown, a drain pipe is provided at the bottom of the tool table 1, so that the water and debris on the flow channel partition 2 can be discharged along the drain hole 3 and the drain pipe during the process of plugging the hollow part by using the provided drain hole 3 and the drain pipe:

[0025] In addition, when the visual camera 7 is needed, it is only necessary to slide the partition 2 out of the hollow part of the tool bench 1, and move the visual camera 7 to the direction of the central axis of the hollow part. The specific structure is as follows: one side of the partition 2 extends to the bottom of the tool bench 1, and is embedded and slidably connected with the bottom surface of the tool bench 1. The bottom surface of the tool bench 1 is located at one side of the hollow part and is plugged with an insertion strip 6 for installing the visual camera 7. The bottom edge of the insertion strip 6 is fixedly connected to an external rack 8, and an external gear 9 meshing with the external rack 8 is provided under the tool bench 1. The top of the external gear 9 is fixedly connected to a winding reel 1 rotatably connected to the bottom surface of the tool bench 1 1, a spiral spring 12 is connected between the wire reel 11 and the tool bench 1, the end of the connecting rod 5 away from the partition 2 is inclined, and the bottom surface of the tool bench 1 is fixedly connected with an electric push rod 4 for pushing the connecting rod 5, and the bottom surface of the tool bench 1 is also plugged with a connecting rod 5 fixed to the extension of the partition 2, and a swing arm 10 is rotatably connected, one end of the swing arm 10 is used to contact the end of the connecting rod 5, and the other end is connected to the free end of the wire wound on the wire reel 11. The specific operation is that the electric push rod 4 extends to push the connecting rod 5 to move, and the connecting rod 5 is used to move to realize the partition 2 to move to stagger with the hollow part, and as Figure 2As shown, one end of the connecting rod 5 is inclined, so after the partition 2 is pushed by the connecting rod 5 and moves to be misaligned with the center of the hollow part, the inclined end of the connecting rod 5 contacts and moves along one side of the swing arm 10, thereby pushing the swing arm 10 to swing, and the other end of the swing arm 10 will pull the line to move when it swings, and because the position of the winding drum 11 cannot be changed, the winding drum 11 will overcome the elastic force of the spiral spring 12 and rotate, thereby realizing that the line is smoothly drawn out with the swing of the swing arm 10, and when the winding drum 11 rotates, it will drive the external gear 9 to rotate, thereby realizing that the meshing connection of the external rack 8 drives the insertion strip 6 to move toward the hollow part, thereby realizing that the visual camera 7 moves to the center of the hollow part, that is, the connecting rod 5 of this scheme can realize the delayed position adjustment of the visual camera 7, that is, it moves after the side of the partition 2 is misaligned with the position of the visual camera 7, to prevent the residual water on the partition 2 from dripping onto the lens of the visual camera 7 along the edge.

[0026] In addition: a cavity 20 is also opened in the tool bench 1 above the partition 2, a part of the cavity 20 is arranged in a ring shape around the hollow part of the tool bench 1, and the other part is arranged in a linear shape along the sliding direction of the partition 2. A plurality of rotating rods 14 are rotatably connected to the inner wall of the hollow part of the tool bench 1, and a plurality of rotating rods 14 are located on one side of the hollow part of the tool bench 1 and are fixedly connected to a waterproof cloth 13. In this solution, the waterproof cloth 13 used is an elastic material. When the partition 2 moves, the rotating rod 14 is rotated to one side parallel to the central axis of the hollow part, so that the waterproof cloth 13 is opened in a cylindrical shape, which can prevent the water remaining on the surface of the tool bench 1 from dripping along the edge of the hollow part.

[0027] One end of the rotating rod 14 extends into the annular portion of the cavity 20 and is fixedly connected to a bevel gear block 15. The inner wall of the annular portion of the cavity 20 is rotatably connected to a bevel gear ring 16 that meshes with a plurality of bevel gear blocks 15. The bevel gear ring 16 can be rotated to realize the rotation of the rotating rod 14 at the corresponding position by the bevel gear block 15.

[0028] An internal rack 18 meshing with the side edge of the bevel gear ring 16 is slidably connected in the linear part of the cavity 20, and the bottom edge of the linear part of the cavity 20 is connected to the partition 2. One side of the partition 2 extends into the cavity 20, and a spring rod 17 is connected between the internal rack 18. A stopper 19 for resisting the internal rack 18 is fixedly connected to the bottom edge of the linear part of the cavity 20. The meshing connection with the internal rack 18 is achieved by machining a straight tooth surface on the outer arc edge of the bevel gear ring 16. The spring rod 17 can drive the spring rod 17 to move when the partition 2 moves, thereby realizing the movement of the internal rack 18 to contact with the stopper 19. The movement distance of the internal rack 18 drives the bevel gear ring 16 to rotate the corresponding angle, thereby realizing the bevel gear block 15 driving the rotating rod 14 to rotate ninety degrees to a vertical state. When the internal rack 18 contacts the stopper 19, the elastic extension of the spring rod 17 will not affect the movement of the partition 2.

[0029] Working principle: install the tool bench 1 at the handwheel placement position in the handwheel assembly machine. When the mechanical arm clamps the handwheel and puts it into the handwheel assembly machine, the electric push rod 4 extends to push the connecting rod 5 to move, so that the partition 2 moves to be offset from the hollow part. After the partition 2 moves to be offset from the center of the hollow part as pushed by the connecting rod 5, the inclined end of the connecting rod 5 contacts and moves along the swing arm 10, thereby pushing the swing arm 10 to swing. When the other end of the swing arm 10 swings, it will pull the wire to move, and the wire is smoothly pulled out with the swing of the swing arm 10 to realize the rotation of the winding drum 11. When the winding drum 11 rotates, it will drive the external gear 9 to rotate, thereby realizing the meshing connection of the external rack 8 to drive the insertion strip 6 to move toward the hollow part, thereby realizing the movement of the visual camera 7 to the center of the hollow part, and the visual camera 7 can be used for positioning.

[0030] The wiring diagram of the electric push rod 4 and the visual camera 7 in the utility model belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the electric push rod 4 and the visual camera 7 are no longer explained in detail.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A visual positioning mechanism for a handwheel assembly machine, comprising a tool table (1) for installation in the handwheel assembly machine and a visual camera (7) for positioning a mechanical arm, characterized in that: The center of the tool bench (1) is hollowed out, and a partition (2) for covering the hollowed-out portion is embedded and slidably connected inside the tool bench (1), one side of the partition (2) extends to the bottom of the tool bench (1) and is embedded and slidably connected to the bottom surface of the tool bench (1), and a plug (6) for installing a visual camera (7) is inserted on one side of the hollowed-out portion of the bottom surface of the tool bench (1), the bottom edge of the plug (6) is fixedly connected to an external rack (8), and an external gear (9) meshingly connected to the external rack (8) is provided below the tool bench (1), the top of the external gear (9) is fixedly connected to a winding reel (11) rotatably connected to the bottom surface of the tool bench (1), and the bottom surface of the tool bench (1) is also plugged with a connecting rod (5) fixed to the extension of the partition (2) and a swing arm (10) rotatably connected, one end of the swing arm (10) is used to contact the end of the connecting rod (5), and the other end is connected to the free end of the wire wound on the winding reel (11).

2. The visual positioning mechanism of the hand wheel assembly machine according to claim 1, characterized in that: A spiral spring (12) is connected between the cable reel (11) and the tool bench (1), one end of the connecting rod (5) away from the partition (2) is inclined, and an electric push rod (4) for pushing the connecting rod (5) is fixedly connected to the bottom surface of the tool bench (1).

3. The visual positioning mechanism of the hand wheel assembly machine according to claim 1, characterized in that: A cavity (20) is also provided in the tool bench (1) above the partition (2), a portion of the cavity (20) being arranged in a ring shape around the hollow portion of the tool bench (1), and another portion being arranged in a linear shape along the sliding direction of the partition (2), a plurality of rotating rods (14) being rotatably connected to the inner wall of the hollow portion of the tool bench (1), and a plurality of the rotating rods (14) being fixedly connected to a waterproof cloth (13) on one side of the hollow portion of the tool bench (1).

4. The visual positioning mechanism of the hand wheel assembly machine according to claim 3, characterized in that: One end of the rotating rod (14) extends into the annular portion of the cavity (20) and is fixedly connected to a bevel gear block (15); the inner wall of the annular portion of the cavity (20) is rotatably connected to a bevel gear ring (16) meshingly connected to a plurality of bevel gear blocks (15).

5. The visual positioning mechanism of the hand wheel assembly machine according to claim 4, characterized in that: An internal rack (18) is slidably connected to the inner linear portion of the cavity (20) and meshes with the side of the bevel gear ring (16), and the bottom edge of the inner linear portion of the cavity (20) is connected to the partition (2), one side of the partition (2) extends into the cavity (20), and a spring rod (17) is connected between the inner rack (18).

6. The visual positioning mechanism of the hand wheel assembly machine according to claim 5, characterized in that: A stopper (19) for resisting the internal rack (18) is fixedly connected to the bottom edge of the linear portion in the cavity (20).

7. The visual positioning mechanism of the hand wheel assembly machine according to claim 1, characterized in that: The partition plate (2) is provided with a drainage hole (3) on its surface.

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