Screw locking execution shaft with laser ranging and visual positioning functions

Abstract

The utility model discloses a screw locking execution shaft with laser ranging and visual positioning, which comprises a mounting frame, a lifting component is mounted in the mounting frame, a movable shell is fixedly mounted at the movable end of the lifting component, a movable seat is fixedly connected to the bottom of the movable shell, a guide rail is fixedly connected to the bottom of the movable seat, and a screw locking mechanism is fixedly connected to the guide rail. And the bottom of the guide rail is slidably connected with a sliding seat and a moving block. According to the utility model, through the arrangement of the visual camera, the laser distance measuring sensor, the movable seat, the guide rail, the sliding seat, the laser sensing plate, the electric locking shaft and the pneumatic elastic pushing assembly, during use, shooting can be carried out through the visual camera, and then processing and positioning are carried out through an external PLC, so that the function of automatically finding a screw hole position is realized; and then the laser distance measuring sensor detects the moving distance of the sliding seat and the electric locking shaft, and whether the screw is locked and attached or not is detected by judging whether the moving distance meets the set requirement or not.

Description

Technical Field

[0001] The utility model relates to the technical field of screw locking, in particular to a screw locking execution axis with laser ranging and visual positioning. Background Art

[0002] Screws play an important role in connecting mechanical equipment. Once the screws are loose, it will cause mechanical equipment failure and safety accidents. Therefore, in mechanical equipment, the locking of screws is very important. The torque method is a commonly used screw locking inspection method. This method has strict requirements on the size and surface quality of the thread. It requires the use of special torque testing instruments, which can quantitatively inspect the tightness of the screws. Usually, when assembling screws, they need to be tightened according to the torque value.

[0003] At present, when a screw locking machine automatically locks a screw, it only uses torque to determine whether the screw is locked in place. However, in actual use, a floating lock NG state is prone to occur, and the screw fails to clamp the workpiece, making it difficult to ensure the quality of the product's screw locking. If it cannot be detected in time, it will cause quality problems in the products leaving the factory, reducing the quality. Utility Model Content

[0004] The utility model is to solve the shortcomings in the prior art and to provide a screw locking execution axis with laser distance measurement and visual positioning.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screw locking actuator with laser ranging and visual positioning, comprising a mounting frame, a lifting assembly is installed in the mounting frame, a movable shell is fixedly installed on the movable end of the lifting assembly, a movable seat is fixedly connected to the bottom of the movable shell, a guide rail is fixedly connected to the bottom of the movable seat, and a slide and a moving block are slidably connected to the bottom of the guide rail; a laser ranging sensor is fixedly installed on one side of the outer surface of the movable seat, and a visual camera is fixedly installed on one side of the outer surface of the movable seat; a pneumatic elastic pushing assembly is installed between the movable seat and the slide, a laser sensing plate is fixedly connected to one side of the outer surface of the slide, and the laser sensing plate matches the laser ranging sensor, a guide rod is provided on one side of the outer surface of the slide that passes through the other side, an electric locking shaft is installed on the slide, and a screw chuck is sleeved on the outer surface of the electric locking shaft; a limit buffer is installed on one end of the guide rod, and a fixed frame is sleeved on the outer surface of the limit buffer, and the fixed frame is fixedly connected to the moving block and the screw chuck.

[0006] Furthermore, the lifting assembly includes a lifting motor, and the lifting motor is fixedly mounted on an inner wall of one side of the mounting frame, a driving end of the lifting motor is fixedly connected to a screw rod, and the screw rod and the mounting frame are rotatably connected, a slider is threadedly sleeved on the outer surface of the screw rod, and the slider is slidably connected to the mounting frame and fixedly connected to the movable shell, and the mounting frame has a limiting effect on the slider, which can ensure the stability of the slider movement, thereby ensuring the stability of the movement of the movable shell.

[0007] Furthermore, the pneumatic elastic pushing assembly includes a pushing cylinder, and the pushing cylinder is fixedly connected to a movable seat, the movable end of the pushing cylinder is fixedly connected to an elastic telescopic rod, and the other end of the elastic telescopic rod is buckled with the sliding seat, and when the sliding seat is subjected to greater resistance, the elastic telescopic rod provides a certain compression space for the pushing cylinder.

[0008] Furthermore, the electric locking shaft includes a locking motor, and the locking motor is fixedly connected to the slide seat, the driving end of the locking motor is fixedly connected to the connecting shaft, the other end of the connecting shaft is fixedly installed with a screw bit, and the screw bit matches the screw chuck, and the setting of the screw bit is conducive to tightening the screw.

[0009] Furthermore, the limit buffer includes a screw, and the screw is fixedly connected to the guide rod and passes through the fixed frame. The outer surface of the screw is symmetrically threaded with two limit nuts, and one end of a single limit nut is fixedly connected with a spring. The limit nuts are set on both sides of the fixed frame to prevent the fixed frame from detaching from the screw.

[0010] Furthermore, the spring is sleeved on the outer surface of the guide rod to ensure the stability of the spring in use.

[0011] Furthermore, the guide rod is slidably connected to the slide seat, so that the slide seat has a limiting effect on the guide rod to prevent it from tilting.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is in use, the screw locking actuator with laser ranging and visual positioning can be photographed by the visual camera, laser ranging sensor, movable seat, guide rail, slide seat, laser sensor plate, electric locking shaft and pneumatic elastic pushing component, and then processed and positioned by an external PLC controller to realize the function of automatically finding the screw hole position. Then the laser ranging sensor detects the moving distance of the slide seat and the electric locking shaft, and detects whether the moving distance meets the set requirements, thereby detecting whether the screw is locked and fit. Once the floating lock NG state occurs, the staff can discover it in time to avoid quality problems of products due to untightened screws before leaving the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 : A three-dimensional diagram of the utility model;

[0016] Figure 2 : A partial stereogram of the utility model;

[0017] Figure 3 : The structural display diagram of the lifting component of the utility model.

[0018] The reference numerals are as follows:

[0019] 1. Mounting frame; 2. Lifting motor; 3. Movable seat; 4. Movable shell; 5. Bit; 6. Connecting shaft; 7. Locking motor; 8. Pushing cylinder; 9. Sliding seat; 10. Elastic telescopic rod; 11. Laser ranging sensor; 12. Laser sensor board; 13. Guide rail; 14. Moving block; 15. Spring; 16. Visual camera; 17. Guide rod; 18. Fixed frame; 19. Screw chuck; 20. Slider; 21. Lead screw; 22. Screw; 23. Limit nut. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1 to 3As shown, it relates to a screw locking actuator with laser ranging and visual positioning, including a mounting frame 1, a lifting assembly is installed in the mounting frame 1, a movable shell 4 is fixedly installed on the movable end of the lifting assembly, a movable seat 3 is fixedly connected to the bottom of the movable shell 4, a guide rail 13 is fixedly connected to the bottom of the movable seat 3, a slide seat 9 and a moving block 14 are slidably connected to the bottom of the guide rail 13, the lifting assembly includes a lifting motor 2, and the lifting motor 2 is fixedly installed on an inner wall of one side of the mounting frame 1, a screw rod 21 is fixedly connected to the driving end of the lifting motor 2, and the screw rod 21 is rotatably connected to the mounting frame 1, a slider 20 is threadedly sleeved on the outer surface of the screw rod 21, and the slider 20 is slidably connected to the mounting frame 1 and fixedly connected to the movable shell 4, the lifting motor 2 drives the screw rod 21 to rotate, and the screw rod 21 can drive the slider 20 to move along the mounting frame 1, thereby driving the movable shell 4 to move.

[0022] A laser ranging sensor 11 is fixedly installed on one side of the outer surface of the movable seat 3. The laser ranging sensor 11 is a prior art and a corresponding model can be selected according to specific needs. A visual camera 16 is fixedly installed on one side of the outer surface of the movable seat 3. The visual camera 16 is a prior art and a corresponding model can be selected according to specific needs. The image of the part is captured by the visual camera 16 and combined with image processing algorithm analysis, the position and angle of the product can be determined.

[0023] A laser sensing plate 12 is fixedly connected to one side of the outer surface of the slide 9, and the laser sensing plate 12 matches the laser ranging sensor 11. A guide rod 17 is provided on one side of the outer surface of the slide 9 and extends to the other side. The guide rod 17 is slidably connected to the slide 9. The slide 9 is installed with an electric locking shaft. A screw chuck 19 is sleeved on the outer surface of the electric locking shaft. The electric locking shaft includes a locking motor 7, and the locking motor 7 is fixedly connected to the slide 9. The driving end of the locking motor 7 is fixedly connected to a connecting shaft 6. A screw bit 5 is fixedly installed on the other end of the connecting shaft 6, and the screw bit 5 matches the screw chuck 19. The locking motor 7 can drive the connecting shaft 6 to rotate, thereby driving the screw bit 5 to rotate.

[0024] A pneumatic elastic pushing component is installed between the movable seat 3 and the sliding seat 9. The pneumatic elastic pushing component includes a pushing cylinder 8, and the pushing cylinder 8 is fixedly connected to the movable seat 3. The movable end of the pushing cylinder 8 is fixedly connected to an elastic telescopic rod 10, and the other end of the elastic telescopic rod 10 is buckled with the sliding seat 9. The pushing cylinder 8 can push the sliding seat 9 to move through the elastic telescopic rod 10.

[0025] A limiting buffer is installed at one end of the guide rod 17, and a fixed frame 18 is sleeved on the outer surface of the limiting buffer, and the fixed frame 18 is fixedly connected to the moving block 14 and the screw chuck 19. The limiting buffer includes a screw rod 22, and the screw rod 22 is fixedly connected to the guide rod 17 and penetrates the fixed frame 18. Two limiting nuts 23 are symmetrically threadedly connected to the outer surface of the screw rod 22. A spring 15 is fixedly connected to one end of a single limiting nut 23. The spring 15 is sleeved on the outer surface of the guide rod 17. When the slide seat 9 contacts the spring 15, the limiting nut 23 can be pushed to move. When the limiting nut 23 contacts the moving block 14, the moving block 14 can be pushed to move.

[0026] Working principle: The image is taken by the visual camera 16, and then processed and positioned by the external PLC controller to realize the function of automatically finding the screw hole position. When the screw locking operation is required, the screw enters the screw chuck 19 under the action of the external feeding device, and then the cylinder 8 is pushed to push the elastic telescopic rod 10 to move, so that the slide 9 is close to the moving block 14, thereby driving the laser sensor plate 12, the locking motor 7, the connecting shaft 6 and the screwdriver bit 5 to move. While moving, the locking motor 7 drives the screwdriver bit 5 to rotate through the connecting shaft 6. When the screwdriver bit 5 enters the screw slot, The screw can be driven to rotate. When the slide 9 contacts the spring 15, the limit nut 23 can be pushed to move. When the limit nut 23 contacts the moving block 14, the moving block 14 can be pushed to move, thereby driving the screw chuck 19 to move. When the screw chuck 19 abuts against the product, the electric locking shaft continues to approach the product under the action of the slide 9 until the screw is screwed into the product. When the torque reaches the set value, the moving distance of the laser sensor plate 12 is detected by the laser ranging sensor 11 to determine whether it reaches the set value, thereby detecting whether the screw is locked and fit.

[0027] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A screw-locking actuator with laser ranging and visual positioning, comprising a mounting frame (1), characterized in that: A lifting component is installed in the mounting frame (1), a movable housing (4) is fixedly installed on the movable end of the lifting component, a movable seat (3) is fixedly connected to the bottom of the movable housing (4), a guide rail (13) is fixedly connected to the bottom of the movable seat (3), and a sliding seat (9) and a moving block (14) are slidably connected to the bottom of the guide rail (13); A laser distance measuring sensor (11) is fixedly mounted on one side of the outer surface of the movable seat (3), and a visual camera (16) is fixedly mounted on one side of the outer surface of the movable seat (3); A pneumatic elastic push assembly is installed between the movable seat (3) and the slide seat (9); a laser sensing plate (12) is fixedly connected to one side of the outer surface of the slide seat (9), and the laser sensing plate (12) matches the laser ranging sensor (11); a guide rod (17) is provided on one side of the outer surface of the slide seat (9) and extends to the other side; an electric locking shaft is installed on the slide seat (9), and a screw chuck (19) is sleeved on the outer surface of the electric locking shaft; A limit buffer is installed at one end of the guide rod (17), and a fixed frame (18) is sleeved on the outer surface of the limit buffer, and the fixed frame (18) is fixedly connected to the moving block (14) and the screw chuck (19).

2. The screw locking actuator with laser ranging and visual positioning according to claim 1 is characterized in that: The lifting assembly comprises a lifting motor (2), and the lifting motor (2) is fixedly mounted on an inner wall of one side of the mounting frame (1), a driving end of the lifting motor (2) is fixedly connected to a screw rod (21), and the screw rod (21) and the mounting frame (1) are rotationally connected, a slider (20) is threadedly sleeved on the outer surface of the screw rod (21), and the slider (20) is slidably connected to the mounting frame (1) and fixedly connected to the movable housing (4).

3. The screw locking actuator with laser ranging and visual positioning according to claim 1 is characterized in that: The pneumatic elastic pushing component comprises a pushing cylinder (8), and the pushing cylinder (8) is fixedly connected to the movable seat (3), the movable end of the pushing cylinder (8) is fixedly connected to an elastic telescopic rod (10), and the other end of the elastic telescopic rod (10) is buckled with the sliding seat (9).

4. The screw locking actuator with laser ranging and visual positioning according to claim 1 is characterized in that: The electric locking shaft comprises a locking motor (7), and the locking motor (7) is fixedly connected to a slide seat (9), a driving end of the locking motor (7) is fixedly connected to a connecting shaft (6), and a screwdriver bit (5) is fixedly mounted on the other end of the connecting shaft (6), and the screwdriver bit (5) matches a screw chuck (19).

5. The screw locking actuator with laser ranging and visual positioning according to claim 1 is characterized in that: The limit buffer comprises a screw rod (22), and the screw rod (22) is fixedly connected to the guide rod (17) and penetrates the fixed frame (18); the outer surface of the screw rod (22) is symmetrically threaded with two limit nuts (23); one end of a single limit nut (23) is fixedly connected to a spring (15).

6. The screw locking actuator with laser ranging and visual positioning according to claim 5 is characterized in that: The spring (15) is sleeved on the outer surface of the guide rod (17).

7. The screw locking actuator with laser ranging and visual positioning according to claim 1 is characterized in that: The guide rod (17) is slidably connected to the slide seat (9).

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