Calibration device and method for a vision inspection apparatus

Abstract

The application discloses a kind of calibration device and method of visual detection equipment, it is related to visual detection equipment calibration technical field, including adjusting seat and adjusting component, the side of adjusting seat is provided with support, adjusting component is set to the other side of adjusting seat, and adjusting component includes first worm, the inside side of adjusting seat is rotatably connected with first worm, and the axial hole of first worm is slidably connected with driving rod, the end of driving rod is fixed with knob, and the other side of driving rod is provided with tooth block.The application switches double worm drive mechanism by single knob push-pull, respectively controls visual camera left and right rotation and front and rear angle adjustment, the design realizes the single-point control of double axial accurate calibration, eliminates the complexity of multiple-point adjustment, significantly improves the convenience of operation, simultaneously using the speed reduction and self-locking characteristics of worm and worm gear drive, effectively guarantee the high accuracy of adjustment process and the stability after adjustment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of visual inspection equipment calibration, in particular to a visual inspection equipment calibration device and method. BACKGROUND

[0002] Visual inspection refers to converting a target to be taken into an image signal by a machine vision product, transmitting the image signal to a dedicated image processing system, and converting the image signal into a digitized signal according to pixel distribution, brightness, color, and the like. The image system performs various operations on the signals to extract the features of the target, and then controls the device action on the scene according to the judgment result.

[0003] The existing machine vision camera is usually fixed on a camera support by bolts during installation. However, when the support is skewed due to assembly tolerance, the photographed image will be distorted, and manual adjustment and calibration need to be performed repeatedly by rotating the bolts at multiple positions with the aid of related tools, which is time-consuming and labor-intensive. SUMMARY

[0004] The present application aims to provide a visual inspection equipment calibration device and method to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a visual inspection equipment calibration device and method, comprising an adjusting seat and an adjusting assembly. One side of the adjusting seat is provided with a support, and the adjusting assembly is arranged on the other side of the adjusting seat. The adjusting assembly comprises a first worm. One side of the inside of the adjusting seat is rotatably connected with the first worm. A driving rod is slidably connected in the axial hole of the first worm. One end of the driving rod is fixed with a knob, and the other side of the driving rod is provided with a tooth block. The other side of the inside of the adjusting seat is rotatably connected with a second worm. The end of the second worm and the end of the first worm are both fixed with a side gear. The top of the second worm is engaged with a worm shaft. The end of the worm shaft is provided with a rotating frame. One end of the rotating frame is rotatably connected with a mounting seat. The top of the first worm is engaged with a worm gear sleeve. The inside of the worm gear sleeve is threadedly connected with a screw rod. The inside of the screw rod is slidably connected with a fixed plate. The end of the screw rod is slidably connected with a limiting plate. One side of the limiting plate is fixed with a gear rack. One side of the gear rack is engaged with a gear. The top of the mounting seat is provided with a visual camera, and the gear is fixed on the mounting seat.

[0006] Further, the adjusting seat is rotatably connected with the worm gear sleeve, and the adjusting seat is fixedly connected with the fixed plate.

[0007] Furthermore, the knob is internally connected to a stabilizing component, which includes a pressure block. The pressure block is slidably connected to the inside of the knob, and a guide groove is provided at the lower end of the pressure block. A T-shaped rod is slidably connected inside the guide groove, and a return spring is connected to the bottom of the pressure block.

[0008] Furthermore, one end of the T-shaped rod is rotatably connected to a connecting rod, and the end of the connecting rod is rotatably connected to a limiting post, and a limiting sleeve is fitted on the outer side of one end of the limiting post.

[0009] Furthermore, the toothed block is slidably connected to the limiting post, and the toothed grooves on both sides of the toothed block match the teeth of the side toothed ring.

[0010] Furthermore, the limiting sleeve is fixedly connected to the adjusting seat, and the adjusting seat is rotatably connected to the worm gear shaft.

[0011] Furthermore, a detection component is connected to one side of the adjustment seat, and the detection component includes a piston plate. The piston plate is mounted on the outer peripheral surface of the drive rod, and a fixed cylinder is slidably connected to the outer side of the piston plate. An air pipe is fixed on the outer peripheral surface of the fixed cylinder, and an air chamber is opened inside one end of the mounting seat.

[0012] Furthermore, the fixed cylinder is fixedly connected to the adjusting seat, and the fixed cylinder is connected to the interior of the air chamber through an air pipe.

[0013] Furthermore, a piston rod is slidably connected inside the air chamber, and a toothed plate is fixed at one end of the piston rod. A toothed ring is engaged on one side of the toothed plate, and the toothed ring is rotatably connected to the mounting base. An infrared ranging sensor is installed at the bottom of the toothed ring, and a touch button is fixed inside the knob.

[0014] Furthermore, the calibration method for the visual inspection equipment, applied to the calibration device of the visual inspection equipment, includes the following steps:

[0015] Step 1: Install the adjustment seat on the bracket, and then fix the vision camera on the mounting seat. When it is necessary to fine-tune and calibrate the angle of the vision camera, first press the pressure block, and squeeze the end of the T-shaped rod through the guide groove, so that it moves along the direction of the connecting rod. This will pull the limiting post through the connecting rod and move it out of the groove inside the limiting sleeve. At the same time, the pressure block will also squeeze the touch button, which will activate the infrared ranging sensor to measure the distance between it and the detection table.

[0016] Step 2: Push the knob so that it moves the toothed block to the side gear ring of the second worm via the drive rod. At the same time, the drive rod will also drive the piston plate to compress the air inside the fixed cylinder, so that the air enters the air chamber through the air pipe and compresses the piston rod, causing the toothed plate to move to the right. Then, through the gear ring, the two infrared ranging sensors are positioned on the left and right sides. At this time, turning the knob will drive the second worm to rotate, which will drive the rotating frame to rotate through the worm wheel shaft, so that the values ​​detected by the infrared ranging sensors on the left and right sides are consistent, and the left and right angles of the vision camera can be calibrated.

[0017] Step 3: Pull the knob forcefully to move the drive rod and the toothed block to the side gear ring of the first worm. During this process, as the piston plate slides inside the fixed cylinder, a negative pressure is formed inside the air chamber through the air pipe. Under the action of atmospheric pressure, the toothed plate moves to the left, and the two infrared ranging sensors will be distributed front and back. At this time, turn the knob to make the worm gear sleeve rotate synchronously through the first worm. The fixed plate will restrict the rotation of the screw and control the screw to push and pull the limit plate, so that the limit plate slides on the outside of the worm gear shaft. The rack will drive the gear to rotate, and the front and back angle of the mounting base will be finely adjusted so that the values ​​detected by the infrared ranging sensors are consistent.

[0018] Step 4: After resetting the drive rod, release the knob. The reset spring will push the pressure block under the limit of the knob, and the pressure block will separate from the touch button. At this time, the infrared ranging sensor will be automatically turned off, and the T-shaped rod will be reset through the guide groove. The T-shaped rod will then push the limit post through the connecting rod, so that it is inserted into the groove of the limit sleeve. Therefore, after adjustment, the position of the drive rod can be automatically locked to prevent the angle of the vision camera from shifting due to accidental knob touch.

[0019] This invention provides a calibration device and method for a visual inspection equipment, which has the following beneficial effects:

[0020] 1. This invention uses a single knob to switch between two worm gear transmission mechanisms, which control the left and right rotation and front and back angle adjustment of the vision camera respectively. This design achieves single-point control for precise dual-axis calibration, eliminates the complexity of multi-point adjustment, and significantly improves the convenience of operation. At the same time, by utilizing the deceleration and self-locking characteristics of worm gear transmission, it effectively ensures high precision in the adjustment process and stability after adjustment.

[0021] 2. In this invention, pressing the pressure block before adjustment unlocks the knob operation. After releasing the pressure block, the return spring automatically pushes it back to its original position, thus automatically locking the drive rod position and ensuring that the toothed block separates from the side toothed ring. This effectively prevents camera angle deviation caused by accidental touch of the knob and ensures the accuracy of the vision camera during use.

[0022] 3. Pressing the pressure block activates the infrared ranging sensor, and changing the knob position enables the coordinated adjustment of the infrared ranging sensor's position. When the knob is pushed, the toothed plate is moved by air pressure, causing the two infrared ranging sensors to be distributed left and right. If the camera is tilted left or right at this time, the measurement values ​​of the two sensors will be inconsistent. Adjusting the left and right angles until the values ​​of the two sensors are the same can calibrate the sensor. Similarly, pulling the knob can make the two sensors distributed front and back, which facilitates the calibration and observation of the front and back angles, thereby improving the convenience of calibration. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a calibration device for a visual inspection equipment according to the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the adjustment seat of the calibration device for a visual inspection equipment according to the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the tooth block of the calibration device for a vision inspection equipment according to the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the rotating frame of the calibration device for a visual inspection equipment according to the present invention;

[0027] Figure 5 This is a three-dimensional structural diagram of a stabilizing component of a calibration device for a visual inspection equipment according to the present invention;

[0028] Figure 6 This is a schematic diagram of the overall bottom-view three-dimensional structure of the calibration device for a visual inspection equipment according to the present invention;

[0029] Figure 7 This is a partial three-dimensional structural diagram of the detection component of the calibration device for a visual inspection equipment according to the present invention.

[0030] In the diagram: 1. Adjustment seat; 2. Bracket; 3. Adjustment assembly; 301. First worm gear; 302. Drive rod; 303. Knob; 304. Gear block; 305. Second worm gear; 306. Side gear ring; 307. Worm gear shaft; 308. Rotating frame; 309. Mounting seat; 310. Worm gear sleeve; 311. Screw; 312. Fixing plate; 313. Limiting plate; 314. Rack; 315. Gear; 4. Visual phase 5. Machine; 501. Stabilizing component; 502. Pressure block; 503. Guide groove; 504. T-shaped rod; 505. Return spring; 506. Connecting rod; 507. Limiting post; 508. Limiting sleeve; 6. Detection component; 601. Piston plate; 602. Fixing cylinder; 603. Air pipe; 604. Air chamber; 605. Piston rod; 606. Toothed plate; 607. Toothed ring; 608. Infrared ranging sensor; 609. Touch button. Detailed Implementation

[0031] Please see Figures 1 to 4 This invention provides a technical solution: a calibration device and method for a visual inspection equipment, comprising an adjustment seat 1 and an adjustment assembly 3. A bracket 2 is provided on one side of the adjustment seat 1, and the adjustment assembly 3 is located on the other side of the adjustment seat 1. The adjustment assembly 3 includes a first worm gear 301. The first worm gear 301 is rotatably connected to one side of the interior of the adjustment seat 1, and a drive rod 302 is slidably connected within an axial opening of the first worm gear 301. A knob 303 is fixed to one end of the drive rod 302, and a toothed block 304 is disposed on the other side of the drive rod 302. A second worm gear 305 is rotatably connected to the other side of the interior of the adjustment seat 1, and side toothed rings 306 are fixed to both the end of the second worm gear 305 and the end of the first worm gear 301. The top of the second worm gear 305 meshes with… The device includes a worm gear shaft 307, with a rotating frame 308 mounted at the end of the worm gear shaft 307. One end of the rotating frame 308 is rotatably connected to a mounting base 309. The top of the first worm 301 is engaged with a worm gear sleeve 310, and the worm gear sleeve 310 is internally threaded with a screw 311. The screw 311 is internally slidably connected with a fixing plate 312. The end of the screw 311 is slidably connected with a limit plate 313, and a rack 314 is fixed on one side of the limit plate 313. A gear 315 is engaged on one side of the rack 314. A vision camera 4 is mounted on the top of the mounting base 309, and the gear 315 is fixed on the mounting base 309. An adjusting seat 1 is rotatably connected to the worm gear sleeve 310, and the adjusting seat 1 is fixedly connected to the fixing plate 312.

[0032] The specific operation is as follows: After fixing the vision camera 4 on the mounting base 309, when it is necessary to fine-tune and calibrate the angle of the vision camera 4, first push the knob 303 so that it drives the toothed block 304 to move to the side gear ring 306 of the second worm 305 via the drive rod 302. At this time, turning the knob 303 will drive the second worm 305 to rotate, thereby driving the rotating frame 308 to rotate via the worm wheel shaft 307, so as to fine-tune and calibrate the left and right angles of the vision camera 4. During this process, the end of the screw 311 and the fixing plate 312 can slide relative to each other, so that no motion interference will occur. When it is necessary to adjust the other axis, simply pull the knob 303 to make the drive rod 302 drive the toothed block 304 to move to the first worm 305. At the side gear ring 306 of 1, when the knob 303 is turned, the worm gear sleeve 310 can be rotated synchronously through the first worm 301, while the fixing plate 312 restricts the rotation of the screw 311, controlling the screw 311 to push and pull the limiting plate 313, so that the limiting plate 313 slides on the outside of the worm gear shaft 307, causing the rack 314 to drive the gear 315 to rotate, and finely adjusting the front and rear angles of the mounting base 309. Thus, during use, the dual-axis angle adjustment and calibration operation of the vision camera 4 can be realized through a single knob 303 without the need for other tools, thereby improving the convenience of operation. At the same time, the deceleration and self-locking performance of the worm gear transmission helps to enhance the accuracy of the vision camera 4 during the adjustment process and the stability after adjustment.

[0033] Please see Figure 5 The knob 303 is internally connected to a stabilizing component 5, which includes a pressure block 501. The pressure block 501 is slidably connected inside the knob 303. A guide groove 502 is provided at the lower end of the pressure block 501. A T-shaped rod 503 is slidably connected inside the guide groove 502. A return spring 504 is connected to the bottom of the pressure block 501. A connecting rod 505 is rotatably connected to one end of the T-shaped rod 503. A limit post 506 is rotatably connected to the end of the connecting rod 505. A limit sleeve 507 is sleeved on the outer side of one end of the limit post 506. The toothed block 304 is slidably connected to the limit post 506. The toothed grooves on both sides of the toothed block 304 match the teeth of the side toothed ring 306. The limit sleeve 507 is fixedly connected to the adjusting seat 1. The adjusting seat 1 is rotatably connected to the worm gear shaft 307.

[0034] The specific operation is as follows: Before adjustment, press the pressure block 501 to squeeze the end of the T-shaped rod 503 through the guide groove 502, causing it to move along the connecting rod 505. This, in turn, pulls the limiting post 506 through the connecting rod 505, moving it out of the groove inside the limiting sleeve 507, quickly releasing the restriction of the drive rod 302, so that the visual camera 4 can be adjusted and calibrated. After adjustment, release the pressure block 501 under the limit of the knob 303, which will reset the T-shaped rod 503 through the guide groove 502. The T-shaped rod 503 will push the limiting post 506 through the connecting rod 505, so that it is inserted into the groove of the limiting sleeve 507. Therefore, after adjustment, the position of the drive rod 302 can be automatically locked, so that there is a certain gap between the tooth block 304 and the side tooth ring 306, avoiding the angle of the vision camera 4 from shifting due to accidental contact with the knob 303. At the same time, the first worm 301 and the second worm 305 have a large frictional resistance with the adjusting seat 1, which requires a large external force to rotate, which helps to enhance the overall stability of the vision camera 4.

[0035] Please see Figure 3 , Figures 5 to 7 A detection component 6 is connected to one side of the adjusting seat 1. The detection component 6 includes a piston plate 601. The piston plate 601 is placed on the outer peripheral surface of the drive rod 302. A fixed cylinder 602 is slidably connected to the outer side of the piston plate 601. An air pipe 603 is fixed on the outer peripheral surface of the fixed cylinder 602. An air chamber 604 is opened inside one end of the mounting seat 309. The fixed cylinder 602 is fixedly connected to the adjusting seat 1. The fixed cylinder 602 is connected to the inside of the air chamber 604 through the air pipe 603. A piston rod 605 is slidably connected inside the air chamber 604. A toothed plate 606 is fixed at one end of the piston rod 605. A toothed ring 607 is engaged on one side of the toothed plate 606. The toothed ring 607 is rotatably connected to the mounting seat 309. An infrared ranging sensor 608 is placed at the bottom of the toothed ring 607. A touch button 609 is fixed inside the knob 303.

[0036] The specific operation is as follows: When the pressure block 501 is pressed, it also presses the touch button 609, which activates the infrared ranging sensor 608 to measure the distance between it and the detection table. Furthermore, when the knob 303 is pushed, the drive rod 302 drives the piston plate 601 to compress the air inside the fixed cylinder 602, allowing the air to enter the air chamber 604 through the air pipe 603 and compress the piston rod 605, causing the toothed plate 606 to move to the right. This, in turn, through the toothed ring 607, positions the two infrared ranging sensors 608 on the left and right sides. At this time, if the visual camera 4 is misaligned with the detection table, the values ​​detected by the two infrared ranging sensors 608 will be inconsistent. Therefore, when adjusting the left and right angles of the visual camera 4, it is only necessary to adjust the infrared ranging sensors 608 on both sides. The values ​​measured during testing must be consistent, thus improving the convenience of observation and calibration. When the knob 303 is pulled to adjust the front and rear angle of the vision camera 4, as the piston plate 601 slides in the fixed cylinder 602, a negative pressure is formed inside the air chamber 604 through the air tube 603. Under the action of atmospheric pressure, the toothed plate 606 moves to the left, and the two infrared ranging sensors 608 will be distributed front and rear, which facilitates observation and calibration when adjusting the front and rear angle of the vision camera 4. After adjustment, the knob is released, and the pressure block 501 will separate from the touch button 609. At this time, the infrared ranging sensor 608 is automatically turned off. Thus, during use, the opening and closing of the infrared ranging sensor 608 and the position adjustment are all linked to the knob 303, without the need for additional operation, making it more convenient to use.

[0037] In summary, the calibration device and method for this visual inspection equipment are used by first installing the adjustment seat 1 on the bracket 2, and then fixing the visual camera 4 on the mounting seat 309. When it is necessary to fine-tune and calibrate the angle of the visual camera 4, the pressure block 501 is pressed first, and the end of the T-shaped rod 503 is squeezed through the guide groove 502, so that it moves along the direction of the connecting rod 505. This causes the limiting post 506 to be pulled out of the groove inside the limiting sleeve 507 through the connecting rod 505, quickly releasing the movement restriction of the drive rod 302. At the same time, the pressure block 501 will also squeeze the touch button 609, which will activate the infrared ranging sensor 608 to measure the distance between it and the inspection table.

[0038] Next, push the knob 303 so that it drives the toothed block 304 to move to the side gear ring 306 of the second worm 305 via the drive rod 302. At the same time, the drive rod 302 will also drive the piston plate 601 to squeeze the air inside the fixed cylinder 602, so that the air enters the air chamber 604 through the air pipe 603 and squeezes the piston rod 605, driving the toothed plate 606 to move to the right. Then, through the gear ring 607, the two infrared ranging sensors 608 are positioned on the left and right sides. At this time, when the vision camera 4 is misaligned with the detection table, the values ​​detected by the two infrared ranging sensors 608 will be inconsistent. Therefore, when calibrating the left and right angles of the vision camera 4, it is only necessary to make the values ​​detected by the infrared ranging sensors 608 on the left and right sides consistent. At this time, turning the knob 303 will drive the second worm 305 to rotate, thereby driving the rotating frame 308 to rotate through the worm wheel shaft 307, so as to fine-tune and calibrate the left and right angles of the vision camera 4.

[0039] Then, when another axial adjustment is needed, simply pull the knob 303 to move the drive rod 302 to move the toothed block 304 to the side gear ring 306 of the first worm 301. During this process, as the piston plate 601 slides in the fixed cylinder 602, a negative pressure is formed inside the air chamber 604 through the air pipe 603. Under the action of atmospheric pressure, the toothed plate 606 moves to the left, and the two infrared ranging sensors 608 will be distributed front and back, which is convenient for observation and calibration when adjusting the front and back angle of the vision camera 4. At this time, turning the knob 303 will cause the worm gear sleeve 310 to rotate synchronously through the first worm 301, while the fixed plate 312 will restrict the rotation of the screw 311 and control the screw 311 to push and pull the limit plate 313, so that the limit plate 313 slides on the outside of the worm gear shaft 307. The rack 314 will drive the gear 315 to rotate, and fine-tune the front and back angle of the mounting base 309.

[0040] Finally, after resetting the drive rod 302 and releasing it, the reset spring 504 will push the pressure block 501 under the limit of the knob 303. The pressure block 501 will then separate from the touch button 609. At this time, the infrared ranging sensor 608 will be automatically turned off, and the T-shaped rod 503 will be reset through the guide groove 502. The T-shaped rod 503 will then push the limiting post 506 through the connecting rod 505, so that it is inserted into the groove of the limiting sleeve 507. Therefore, after adjustment, the position of the drive rod 302 can be automatically locked, so that there is a certain distance between the toothed block 304 and the side toothed ring 306, avoiding the angle of the vision camera 4 from shifting due to accidental contact with the knob 303. At the same time, the first worm 301 and the second worm 305 have a large frictional resistance with the adjusting seat 1, which requires a large external force to rotate, which helps to enhance the overall stability of the vision camera 4.

[0041] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A calibration device for a visual inspection equipment, characterized in that, The system includes an adjustment seat and an adjustment assembly. A bracket is provided on one side of the adjustment seat, and the adjustment assembly is located on the other side of the adjustment seat. The adjustment assembly includes a first worm gear. The first worm gear is rotatably connected to one side of the adjustment seat, and a drive rod is slidably connected within an axial opening of the first worm gear. A knob is fixed to one end of the drive rod, and a toothed block is mounted on the other side of the drive rod. A second worm gear is rotatably connected to the other side of the adjustment seat, and side gear rings are fixed to the ends of both the second and first worm gears. A worm wheel shaft meshes with the top of the second worm gear, and a rotating frame is mounted at the end of the worm wheel shaft. A mounting base is rotatably connected to one end of the rotating frame. A worm wheel sleeve meshes with the top of the first worm gear, and a screw is threadedly connected to the inside of the worm wheel sleeve. A fixing plate is slidably connected to the inside of the screw. A limit plate is slidably connected to the end of the screw, and a rack is fixed to one side of the limit plate. A gear meshes with one side of the rack. A vision camera is mounted on the top of the mounting base, and a gear is fixed to the mounting base. The knob... The device includes an internal stabilizing component, which comprises a pressure block. The pressure block is slidably connected to the knob, and a guide groove is provided at the lower end of the pressure block. A T-shaped rod is slidably connected to the guide groove. A return spring is connected to the bottom of the pressure block. A connecting rod is rotatably connected to one end of the T-shaped rod, and a limit post is rotatably connected to the end of the connecting rod. A limit sleeve is fitted on the outer side of one end of the limit post. The toothed block is slidably connected to the limit post, and the toothed grooves on both sides of the toothed block match the teeth of the side toothed ring. A detection component, including a piston plate, is connected to one side of the adjusting seat. A piston plate is mounted on the outer circumference of the drive rod, and a fixed cylinder is slidably connected to the outer side of the piston plate. An air pipe is fixed to the outer circumference of the fixed cylinder. An air chamber is provided inside one end of the mounting seat, and a piston rod is slidably connected inside the air chamber. A toothed plate is fixed to one end of the piston rod. A toothed ring meshes with one side of the toothed plate, and the toothed ring is rotatably connected to the mounting seat. An infrared ranging sensor is mounted at the bottom of the toothed ring. A touch button is fixed inside the knob.

2. The calibration device for a visual inspection equipment according to claim 1, characterized in that, The adjusting seat is rotatably connected to the worm gear sleeve, and the adjusting seat is fixedly connected to the fixed plate.

3. The calibration device for a visual inspection equipment according to claim 2, characterized in that, The limiting sleeve is fixedly connected to the adjusting seat, and the adjusting seat is rotatably connected to the worm gear shaft.

4. The calibration device for a visual inspection equipment according to claim 3, characterized in that, The fixed cylinder is fixedly connected to the adjusting seat, and the fixed cylinder is connected to the interior of the air chamber through an air pipe.

5. A calibration method for a visual inspection device, characterized in that, The calibration apparatus applied to the visual inspection device of claim 4 includes the following steps: Step 1: Install the adjustment seat on the bracket, and then fix the vision camera on the mounting seat. When it is necessary to fine-tune and calibrate the angle of the vision camera, first press the pressure block, and squeeze the end of the T-shaped rod through the guide groove, so that it moves along the direction of the connecting rod. This will pull the limiting post through the connecting rod and move it out of the groove inside the limiting sleeve. At the same time, the pressure block will also squeeze the touch button, which will activate the infrared ranging sensor to measure the distance between it and the detection table. Step 2: Push the knob so that it moves the toothed block to the side gear ring of the second worm via the drive rod. At the same time, the drive rod will also drive the piston plate to compress the air inside the fixed cylinder, so that the air enters the air chamber through the air pipe and compresses the piston rod, causing the toothed plate to move to the right. Then, through the gear ring, the two infrared ranging sensors are positioned on the left and right sides. At this time, turning the knob will drive the second worm to rotate, which will drive the rotating frame to rotate through the worm wheel shaft, so that the values ​​detected by the infrared ranging sensors on the left and right sides are consistent, and the left and right angles of the vision camera can be calibrated. Step 3: Pull the knob forcefully to move the drive rod and the toothed block to the side gear ring of the first worm. During this process, as the piston plate slides inside the fixed cylinder, a negative pressure is formed inside the air chamber through the air pipe. Under the action of atmospheric pressure, the toothed plate moves to the left, and the two infrared ranging sensors will be distributed front and back. At this time, turn the knob to make the worm gear sleeve rotate synchronously through the first worm. The fixed plate will restrict the rotation of the screw and control the screw to push and pull the limit plate, so that the limit plate slides on the outside of the worm gear shaft. The rack will drive the gear to rotate, and the front and back angle of the mounting base will be finely adjusted so that the values ​​detected by the infrared ranging sensors are consistent. Step 4: After resetting the drive rod, release the knob. The reset spring will push the pressure block under the limit of the knob, and the pressure block will separate from the touch button. At this time, the infrared ranging sensor will be automatically turned off, and the T-shaped rod will be reset through the guide groove. The T-shaped rod will then push the limit post through the connecting rod, so that it is inserted into the groove of the limit sleeve. Therefore, after adjustment, the position of the drive rod can be automatically locked to prevent the angle of the vision camera from shifting due to accidental knob touch.

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