Visual detection positioning mechanism

Abstract

The utility model relates to visual inspection field discloses a kind of visual inspection positioning mechanism, comprising: positioning support;Positioning stabilizing mechanism;The positioning stabilizing mechanism is set on positioning support upper surface, in the utility model, start pneumatic gripper, two pneumatic grippers are slid on the upper surface of rotating base, from left and right sides to center, exert horizontal direction's clamping force to workpiece, in the process of workpiece clamping locking, two protruding slopes are guided to workpiece, make workpiece slide to bottom plate central region, after pneumatic gripper completes horizontal clamping, suction pump is started by connecting pipe and vacuum suction nozzle, form negative pressure environment in the hollow structure inside workpiece bottom plate, workpiece is firmly fixed on bottom plate by negative pressure suction force, not only provide vertical direction's stable constraint, but also effectively absorb the tiny vibration possibly generated in detection process, prevent workpiece from equipment operation or external interference and occur jitter.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection, and in particular to a visual inspection positioning mechanism. Background Technology

[0002] In modern industrial automated production, high-precision and high-efficiency detection and positioning of workpieces is a key link in realizing intelligent manufacturing and improving product quality and production efficiency. Whether it is consumer electronics, automobile manufacturing, medical devices, semiconductor packaging, logistics sorting and other industries, they all generally need to perform accurate position identification, posture judgment and defect detection of workpieces on the production line to guide subsequent assembly, gripping, welding, spraying or sorting processes.

[0003] Most existing positioning mechanisms use a single mechanical clamp or simple stop positioning. For example, relying solely on one or both sides of pneumatic or electric grippers for horizontal constraint can limit the planar movement of the workpiece, but often fails to provide effective vertical constraint. When the detection equipment itself is running or there is slight vibration in the external environment, the workpiece is prone to vertical jumping or warping, resulting in blurred images and seriously affecting the accuracy of the detection. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a visual detection and positioning mechanism that solves the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a visual detection and positioning mechanism, comprising: Positioning bracket; A positioning and stabilizing mechanism is provided on the upper surface of the positioning bracket. The positioning and stabilizing mechanism includes pneumatic grippers, a workpiece base plate, vacuum adsorption holes, a vacuum suction nozzle, a connecting pipe, and an adsorption pump. Pneumatic grippers are provided on both the left and right sides of the workpiece base plate. The lower ends of the two pneumatic grippers are slidably connected to the upper surface of the rotating base. Raised ramps are provided on both the front and rear sides of the upper surface of the workpiece base plate. Multiple vacuum adsorption holes are provided on the upper surface of the workpiece base plate. A vacuum suction nozzle is connected to one side of the workpiece base plate.

[0006] Preferably, the upper surface of the positioning bracket is fixedly connected to four corners with limit rods, and the upper ends of the four limit rods are arranged through the four corners of the lifting platform.

[0007] Preferably, it also includes a position adjustment mechanism, which includes a lifting electric cylinder, a lifting bracket, a rotary servo motor, and a rotary base. The lifting electric cylinder is fixedly connected to the rear side of the positioning bracket.

[0008] Preferably, the output end of the lifting cylinder is connected to a lifting bracket, and a rotary servo motor is fixedly connected to the front side of the lifting bracket.

[0009] Preferably, the output end of the rotary servo motor is connected to a rotating base.

[0010] Preferably, a visual inspection camera is provided on one side of the positioning bracket.

[0011] Preferably, the two raised ramps are symmetrically arranged, and the side of the two raised ramps closest to the center of the workpiece base plate is an inclined surface.

[0012] Preferably, the workpiece base plate has a hollow structure inside.

[0013] Preferably, the end of the vacuum suction nozzle furthest from the workpiece base plate is connected to a connecting pipe, and the other end of the connecting pipe is connected to an adsorption pump.

[0014] Preferably, LED light sources are provided on both sides of the upper surface of the lifting platform.

[0015] Beneficial effects This invention provides a visual detection and positioning mechanism. Compared with the prior art, it has the following advantages: 1. In this utility model, through the positioning and stabilizing mechanism, when the workpiece is placed on the workpiece base plate, the pneumatic grippers are activated. The two pneumatic grippers slide on the upper surface of the rotating base and move towards the center from the left and right sides, applying a horizontal clamping force to the workpiece. During the workpiece clamping and locking process, the two raised ramps guide the workpiece, causing it to slide towards the center area of ​​the base plate. After the pneumatic grippers complete the horizontal clamping, the adsorption pump is activated through the connecting pipe and the vacuum suction nozzle, forming a negative pressure environment in the hollow structure inside the workpiece base plate. The workpiece is firmly fixed on the base plate by the negative pressure adsorption force, which not only provides vertical stability constraint, but also effectively absorbs the small vibrations that may be generated during the detection process, preventing the workpiece from shaking due to equipment operation or external interference. 2. In this utility model, by setting a position adjustment mechanism, when it is necessary to adjust the height of the workpiece to match the optimal focal length of the vision inspection camera or to detect workpiece features at different heights, the lifting electric cylinder is activated to drive the lifting bracket connected to it to rise or fall vertically. After the workpiece is raised or lowered to the target height, if it is necessary to observe and measure the workpiece from different angles, the rotary servo motor is activated to drive the rotary base to rotate, thereby accurately presenting the specific surface or feature to be detected in the field of view of the vision inspection camera. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a visual inspection and positioning mechanism after positioning, as proposed in this utility model. Figure 2 This is a three-dimensional structural diagram of a visual inspection and positioning mechanism proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of a visual inspection and positioning mechanism proposed in this utility model; Figure 4 This is a schematic diagram of the positioning stabilization mechanism in a visual inspection and positioning mechanism proposed in this utility model.

[0017] Legend: 1. Positioning bracket; 2. Limiting rod; 3. Lifting platform; 4. Positioning stabilization mechanism; 401. Pneumatic gripper; 402. Workpiece base plate; 403. Vacuum adsorption hole; 404. Vacuum suction nozzle; 405. Connecting pipe; 406. Adsorption pump; 407. Raised ramp; 5. Position adjustment mechanism; 501. Lifting electric cylinder; 502. Lifting bracket; 503. Rotary servo motor; 504. Rotating base; 6. Vision inspection camera; 7. LED light source. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4 This utility model provides two technical solutions, specifically including the following embodiments: Example 1: A visual inspection and positioning mechanism includes: a positioning bracket 1; and a positioning stabilization mechanism 4. The positioning stabilization mechanism 4 is disposed on the upper surface of the positioning bracket 1 and includes pneumatic grippers 401, a workpiece base plate 402, a vacuum suction hole 403, a vacuum suction nozzle 404, a connecting pipe 405, and a suction pump 406. Pneumatic grippers 401 are provided on both the left and right sides of the workpiece base plate 402. The lower ends of the two pneumatic grippers 401 are slidably connected to the upper surface of a rotating base 504. The front and rear sides of the upper surface of the workpiece base plate 402 are... Both sides are provided with raised ramps 407. The upper surface of the workpiece base plate 402 is provided with multiple vacuum adsorption holes 403. A vacuum suction nozzle 404 is connected to one side of the workpiece base plate 402. The two raised ramps 407 are symmetrically arranged, and the side of the two raised ramps 407 near the center of the workpiece base plate 402 is an inclined surface. The workpiece base plate 402 has a hollow structure inside. The end of the vacuum suction nozzle 404 away from the workpiece base plate 402 is connected to a connecting pipe 405, and the other end of the connecting pipe 405 is connected to an adsorption pump 406.

[0020] During operation, when the workpiece is placed on the workpiece base plate 402, the pneumatic grippers 401 are activated. The two pneumatic grippers 401 slide on the upper surface of the rotating base 504, moving towards the center from both sides to apply a horizontal clamping force to the workpiece. During the workpiece clamping and locking process, the two raised ramps 407 guide the workpiece, causing it to slide towards the center area of ​​the base plate. After the pneumatic grippers 401 complete the horizontal clamping, the adsorption pump 406 is activated through the connecting pipe 405 and the vacuum suction nozzle 404, creating a negative pressure environment in the hollow structure inside the workpiece base plate 402. The negative pressure adsorption force firmly fixes the workpiece to the base plate, providing not only stable vertical constraints but also effectively absorbing minor vibrations that may occur during the detection process, preventing the workpiece from shaking due to equipment operation or external interference.

[0021] Example 2: Based on Embodiment 1, limit rods 2 are fixedly connected to the four corners of the upper surface of the positioning bracket 1. The upper ends of the four limit rods 2 are inserted through the four corners of the lifting platform 3. The positioning bracket 1 also includes a position adjustment mechanism 5, which comprises a lifting cylinder 501, a lifting bracket 502, a rotary servo motor 503, and a rotary base 504. The lifting cylinder 501 is fixedly connected to the rear side of the positioning bracket 1. The output end of the lifting cylinder 501 is driven by the lifting bracket 502. The front side of the lifting bracket 502 is fixedly connected to the rotary servo motor 503. The output end of the rotary servo motor 503 is driven by the rotary base 504. A vision inspection camera 6 is installed on one side of the lifting platform 3, and LED light sources 7 are installed on both sides of the upper surface of the lifting platform 3. When it is necessary to adjust the height of the workpiece to match the optimal focal length of the vision inspection camera 6 or to detect the features of the workpiece at different heights, the lifting electric cylinder 501 is activated to drive the lifting bracket 502 connected to it to rise or fall vertically. After the workpiece is lifted or lowered to the target height, if it is necessary to observe and measure the workpiece from different angles, the rotary servo motor 503 is activated to drive the rotating base 504 to rotate, so that the specific surface or feature to be inspected is accurately presented in the field of view of the vision inspection camera 6.

[0022] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A visual inspection and positioning mechanism, characterized in that: include: Positioning bracket (1); Positioning stabilization mechanism (4); The positioning stabilization mechanism (4) is set on the upper surface of the positioning bracket (1). The positioning stabilization mechanism (4) includes a pneumatic gripper (401), a workpiece base plate (402), a vacuum adsorption hole (403), a vacuum suction nozzle (404), a connecting pipe (405), and an adsorption pump (406). Pneumatic grippers (401) are provided on both the left and right sides of the workpiece base plate (402). The lower ends of the two pneumatic grippers (401) are slidably connected to the upper surface of the rotating base (504). Raised ramps (407) are provided on both the front and rear sides of the upper surface of the workpiece base plate (402). Multiple vacuum adsorption holes (403) are provided on the upper surface of the workpiece base plate (402). A vacuum suction nozzle (404) is connected to one side of the workpiece base plate (402).

2. The visual detection and positioning mechanism according to claim 1, characterized in that: The upper surface of the positioning bracket (1) is fixedly connected to four corners of the limiting rods (2), and the upper ends of the four limiting rods (2) are set through the four corners of the lifting platform (3).

3. The visual detection and positioning mechanism according to claim 2, characterized in that: It also includes a position adjustment mechanism (5), which includes a lifting electric cylinder (501), a lifting bracket (502), a rotary servo motor (503), and a rotating base (504). The lifting electric cylinder (501) is fixedly connected to the rear side of the positioning bracket (1).

4. The visual detection and positioning mechanism according to claim 3, characterized in that: The output end of the lifting electric cylinder (501) is connected to the lifting bracket (502), and the front side of the lifting bracket (502) is fixedly connected to the rotary servo motor (503).

5. A visual detection and positioning mechanism according to claim 4, characterized in that: The output end of the rotary servo motor (503) is connected to the rotating base (504).

6. The visual detection and positioning mechanism according to claim 1, characterized in that: A visual inspection camera (6) is provided on one side of the positioning bracket (1).

7. A visual detection and positioning mechanism according to claim 1, characterized in that: The two raised ramps (407) are symmetrically arranged, and the side of the two raised ramps (407) near the center of the workpiece base plate (402) is an inclined surface.

8. A visual detection and positioning mechanism according to claim 1, characterized in that: The workpiece base plate (402) has a hollow structure inside.

9. A visual detection and positioning mechanism according to claim 1, characterized in that: The vacuum suction nozzle (404) is connected to a connecting pipe (405) at one end away from the workpiece base plate (402), and the other end of the connecting pipe (405) is connected to an adsorption pump (406).

10. A visual detection and positioning mechanism according to claim 2, characterized in that: LED light sources (7) are provided on both sides of the upper surface of the lifting platform (3).

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