A production line automatic detection device with image recognition function

Abstract

The invention relates to the technical field of detection equipment, in particular to a production line automatic detection equipment with an image recognition function; the equipment comprises a body, one end of the body is provided with a feed port, and the other end is provided with a discharge port; the body is provided with a mounting groove penetrating to the discharge port; the invention realizes flipping of a PCB board by arranging a conveying roller, so that both the front and back sides of the PCB board can be visually inspected, thereby reducing the increase in production time caused by manual flipping, and improving the production efficiency of the production line; and arranging a clamping block to clamp both sides of the PCB board, not only avoiding the blocking of the image acquisition of the PCB board by the clamping block, ensuring the accuracy of the image acquisition of the PCB board, but also enabling the clamping block to stably clamp the PCB board, preventing the shape and position of the image acquired by the PCB board from being offset due to the tilted position, thereby ensuring that the image template of the PCB board can be accurately matched with the image template of the normal PCB board, so that the accuracy of the detection of the PCB board is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a production line automatic detection equipment with an image recognition function. Background Art

[0002] With the rapid development of image processing technology, image recognition technology has been promoted and developed, and has gradually become an important part of the field of artificial intelligence. It is widely used in facial recognition, fingerprint recognition, medical diagnosis, automatic detection of production lines, and other fields, playing an important role. Especially in industrial production, the use of image recognition technology can realize automatic detection and sorting of product quality, improving production efficiency and product quality.

[0003] In PCB appearance inspection, it is usually necessary to check both sides of the PCB board. This is because the components, circuits and welding quality on the PCB exist on both sides of the double-sided board. In order to ensure the integrity and quality of the PCB, the front and back sides of the double-sided board need to be checked separately. This ensures that all components are inspected and possible problems can be found, such as poor welding, missing or damaged components, etc.

[0004] When performing appearance inspection on PCB boards, it is necessary to use an image detector to collect high-resolution images of the PCB boards, obtain image information of solder joints and circuits, and then compare the collected image information with the image template of a normal PCB board. By comparing the similarity between the two images, it is determined whether there are tin leakage and short circuit problems. In addition, during the transportation process, it is inevitable that there will be debris attached to the surface of the PCB board. The debris attached to the surface of the PCB board will block the solder joints on the surface of the PCB board and the route of the circuit. This will cause the image of the PCB board collected by the image detector to be inaccurate, so that normal PCB boards will also have erroneous detection of solder leakage and short circuits.

[0005] In addition, PCB board inspection often uses a robot to hold the PCB board vertically under the visual inspection instrument, and the clamping system clamps the vertically placed PCB board to achieve simultaneous inspection of both sides of the PCB board; however, the investment and maintenance costs of the robot system are high, so for small companies, most of them choose to place the PCB board flat on the conveyor line to first inspect one side, and then manually turn it over for inspection; however, manually turning over the PCB board for inspection will increase the production cycle, thereby reducing the production efficiency of the production line;

[0006] In view of this, in order to overcome the above technical problems, the present invention proposes a production line automatic detection equipment with image recognition function to solve the above technical problems. Summary of the invention

[0007] In order to make up for the shortcomings of the prior art, the present invention proposes an automatic production line inspection device with an image recognition function. The present invention realizes flipping of the PCB board by arranging a conveying roller, so that both the front and back sides of the PCB board can be visually inspected, thereby reducing the increase in production time caused by manual flipping; improving the production efficiency of the production line; and arranging a clamping block to clamp both sides of the PCB board, not only avoiding the blocking of the image acquisition of the PCB board by the clamping block, ensuring the accuracy of the image acquisition of the PCB board, but also enabling the clamping block to stably clamp the PCB board, preventing the shape and position of the image collected by the PCB board from being offset due to the tilted position, thereby ensuring that it can accurately match the image template of the normal PCB board, so that the accuracy of PCB board detection is further improved.

[0008] The technical solution adopted by the present invention to solve the technical problem is: the production line automatic detection equipment with image recognition function described in the present invention comprises:

[0009] A machine body, wherein a feed port is provided at one end of the machine body and a discharge port is provided at the other end; a mounting groove is provided inside the machine body and extends to the discharge port; a conveying roller is rotatably connected to the groove wall of the mounting groove; the number of the conveying rollers is at least two; a conveyor belt is wound between the conveying rollers; a driving motor is fixedly installed on one side of the machine body; the driving motor is used to drive the conveying rollers to rotate; two image detectors are arranged above the conveyor belt; the two image detectors are fixedly connected to the machine body;

[0010] A turning roller, the turning roller is rotatably connected to the conveyor belt; a clamping rod is fixedly installed on one side of the turning roller; two clamping rods are provided; the two clamping rods are distributed on both sides of the conveyor belt; transmission gears are fixedly connected to both ends of the turning roller; a rack meshing with the transmission gear is fixedly connected to the inner wall of the machine body.

[0011] Preferably, a groove is provided on one side of the two clamping rods close to each other; a clamping block is slidably connected in the groove; a regulating unit is installed between the clamping block and the bottom of the groove; and the regulating unit is used to control the clamping block to enter and exit the groove.

[0012] Preferably, the control unit comprises an electromagnet; the electromagnet is fixedly connected to the bottom of the groove; a magnetic sheet is embedded on one side of the clamping block close to the bottom of the groove; and a pressure sensor is embedded on one side of the flip roller close to the clamping block.

[0013] Preferably, the regulating unit includes a push rod; the clamping block is connected to the bottom of the groove by a connecting spring; circular grooves are provided at both ends of the flip roller; the push rod is slidingly sealed and connected in the circular groove; an oil channel connected to the groove is provided inside the clamping rod; the end of the oil channel away from the groove is connected to the circular groove; a trapezoidal block is fixedly connected to the groove wall of the mounting groove.

[0014] Preferably, the clamping block is made of silicone rubber material; a V-shaped groove is formed on a side of the clamping block away from the groove.

[0015] Preferably, an airbag is fixedly connected to the upper end of the conveyor belt; the airbag is arranged in a fan shape; the end of the airbag away from the conveyor belt is fixedly connected to the clamping rod; an air hole connected to the airbag is provided on the side of the turning roller close to the clamping rod; and an air inlet connected to the airbag is provided at the upper end of the conveyor belt.

[0016] Preferably, one-way valves are installed in both the air inlet and the air hole; and the end of the air hole away from the airbag is configured to be in a frustum shape.

[0017] Preferably, a strip groove is provided at the upper end of the conveyor belt; an air film is embedded and fixed in the strip groove; an air channel is provided inside the conveyor belt; one end of the air channel is connected to the strip groove, and the other end is connected to the air bag.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention realizes flipping of the PCB board by arranging a conveying roller, so that both the front and back sides of the PCB board can be visually inspected, thereby reducing the increase in production time caused by manual flipping and improving the production efficiency of the production line; and arranging clamping blocks to clamp both sides of the PCB board not only avoids the clamping blocks from blocking the image acquisition of the PCB board and ensures the accuracy of the image acquisition of the PCB board, but also enables the clamping blocks to stably clamp the PCB board and prevent the shape and position of the image collected by the PCB board from being offset due to the tilted position, thereby ensuring that it can accurately match the image template of the normal PCB board, so that the accuracy of PCB board detection is further improved.

[0020] 2. The present invention cooperates with the push rod and the trapezoidal block, so that the push rod blocked by the trapezoidal block can squeeze the hydraulic oil in the circular groove to push the clamping block to clamp the PCB board. Compared with the electromagnet and the pressure sensor, it can save the consumption of electric energy; greatly reduce the production cost, so that the practical application effect of the present invention is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the present invention;

[0024] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0025] Figure 4It is a schematic diagram of the structure of the turning roller used in the present invention;

[0026] Figure 5 yes Figure 4 The enlarged view of point B in the middle;

[0027] Figure 6 is a three-dimensional diagram of the turning roller used in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the turning roller used in the present invention with a magnetic sheet installed;

[0029] In the figure: 1. body; 11. feed port; 12. discharge port; 13. mounting groove; 131. conveying roller; 132. conveying belt; 133. air hole; 14. driving motor; 15. image detector; 16. air inlet; 161. one-way valve; 2. flip roller; 21. clamping rod; 22. transmission gear; 23. rack; 24. groove; 241. electromagnet; 242. magnetic sheet; 243. pressure sensor; 25. clamping block; 251. V-shaped groove; 26. push rod; 261. connecting spring; 262. circular groove; 263. oil channel; 27. trapezoidal block; 28. air bag; 29. ​​strip groove; 291. air film; 292. air channel. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 7 As shown, the production line automatic detection equipment with image recognition function described in the present invention includes the following embodiments:

[0032] Embodiment 1, a production line automatic detection device with image recognition function, comprising:

[0033] A machine body 1, wherein a feed port 11 is provided at one end of the machine body 1, and a discharge port 12 is provided at the other end; a mounting groove 13 is provided inside the machine body 1 and extends to the discharge port 12; a conveying roller 131 is rotatably connected to the groove wall of the mounting groove 13; the number of the conveying rollers 131 is at least two; a conveying belt 132 is wound between the conveying rollers 131; a driving motor 14 is fixedly installed on one side of the machine body 1; the driving motor 14 is used to drive the conveying rollers 131 to rotate; two image detectors 15 are arranged above the conveying belt 132; the two image detectors 15 are fixedly connected to the machine body 1;

[0034] A flip roller 2, the flip roller 2 is rotatably connected to the conveyor belt 132; a clamping rod 21 is fixedly installed on one side of the flip roller 2; two clamping rods 21 are provided; the two clamping rods 21 are distributed on both sides of the conveyor belt 132; both ends of the flip roller 2 are fixedly connected to a transmission gear 22; the inner wall of the body 1 is fixedly connected to a rack 23 meshing with the transmission gear 22.

[0035] As an embodiment of the present invention, a groove 24 is provided on one side of the two clamping rods 21 that are close to each other; a clamping block 25 is slidably connected in the groove 24; a regulating unit is installed between the clamping block 25 and the bottom of the groove 24; the regulating unit is used to control the clamping block 25 to enter and exit the groove 24.

[0036] As an embodiment of the present invention, the control unit includes an electromagnet 241; the electromagnet 241 is fixedly connected to the bottom of the groove 24; the side of the clamping block 25 close to the bottom of the groove 24 is inlaid with a magnetic sheet 242; the side of the flip roller 2 close to the clamping block 25 is inlaid with a pressure sensor 243.

[0037] As an embodiment of the present invention, the clamp block 25 is made of silicone rubber material; a V-shaped groove 251 is formed on a side of the clamp block 25 away from the groove 24;

[0038] During the appearance inspection of PCB boards, the PCB boards are often placed vertically under the visual inspection instrument by a robot, and the vertically placed PCB boards are clamped by a clamping system, so as to realize the simultaneous inspection of both sides of the PCB boards. However, the investment and maintenance costs of the robot system are high, so for small enterprises, most of them choose to place the PCB boards flat on the conveyor line to inspect one side first, and then control the conveyor system to pause and manually turn over for inspection; which will increase the production cycle and reduce the production efficiency of the production line;

[0039] When performing appearance inspection on a PCB board, it is necessary to use an image detector 15 to perform high-resolution image acquisition on the PCB board to obtain image information of soldering points and circuits, and then compare the acquired image information of the PCB board with the image template of a normal PCB board, and judge whether there are tin leakage and short circuit problems by comparing the similarity between the two images; since the acquired image information of the PCB board needs to be compared with the image template of a normal PCB board, if the PCB board is placed at an angle, the acquired image information of the PCB board will be tilted, causing the shape and position of the PCB board in the image to change, thereby causing the acquired image information of the PCB board to match the image template of the normal PCB board inaccurately; and in order to ensure that the shape and position of the PCB board in the image taken by the image detector 15 are accurate, the present invention is achieved by An image detector 15 is installed outside the feed port 11 of the machine body 1, so that the image detector 15 outside the feed port 11 is used to perform image detection on the PCB board conveyed to the feed port 11, so as to detect the placement position of the PCB board, and an alarm device is installed at the discharge port 12 of the machine body 1. When the image detector 15 outside the feed port 11 detects that the placement position of the PCB board is inaccurate, the alarm device sounds an alarm, and the user adjusts the position of the PCB board to ensure that the position of the PCB board entering the feed port 11 is accurate; and an alarm device is also installed at the discharge port 12 of the machine body 1. When the PCB board is detected to have too many or too few solder joints in the machine body 1, and the circuit is short-circuited or broken, the alarm device located at the discharge port 12 of the machine body 1 sounds an alarm, and the user takes out the PCB board with problems and recycles it;

[0040] In the initial state, the rack 23 is located in the mounting groove 13, and the conveying roller 131 at the upper end of the conveying belt 132 is located at the end of the machine body 1 close to the feed inlet 11. As the external conveying system conveys the PCB board to the inside of the machine body 1 through the feed inlet 11 of the machine body 1, the PCB board is located on the conveying belt 132 in the machine body 1. By controlling the external conveying system to convey the PCB board at a speed greater than the transmission speed of the conveying belt 132, the PCB board will move along the conveying belt 132 toward the conveying roller 131 under the push of the external conveying system; by setting the conveying belt 132 to be made of PTFE material, the surface of the conveying belt 132 is smooth, thereby reducing the friction between the conveying belt 132 and the PCB board, preventing the conveying belt 132 from hitting the PCB The circuit and other components on the surface of the board are damaged by friction, thereby ensuring the inspection quality of the PCB board; at this time, the front side of the PCB board faces upward; until the PCB board contacts the conveying roller 131 close to the feed port 11, so that the PCB board contacts the pressure sensor 243 on one side of the conveying roller 131, so that the PCB board generates an extrusion force on the pressure sensor 243, and at this time, the extruded pressure sensor 243 generates an electrical signal to the electromagnet 241, so that the electromagnet 241 is energized and generates the same magnetic pole as the magnetic sheet 242. Due to the principle of like poles repelling each other, the magnetic sheet 242 drives the clamping block 25 to move away from the groove 24 under the impetus of the magnetic repulsion; so that the clamping block 25 extending out of the groove 24 can clamp the PCB board through the two side walls of the PCB board;

[0041] This is because the image detector 15 located above the body 1 is facing downward to shoot the PCB board passing through the image detector 15. If the traditional clamping block 25 is used to clamp the surface of the PCB board, although the clamping block 25 clamps the surface of the PCB board and can stably clamp the PCB board, the clamping block 25 on the surface of the PCB board will block the solder joints and circuits on the surface of the PCB board, seriously interfering with the detection accuracy of the PCB board; therefore, by setting the clamping block 25 to clamp the two side walls of the PCB board, it can be ensured that the clamping block 25 will not block the image acquisition of the surface of the PCB board, so as to ensure that the image acquisition of the surface of the PCB board is more accurate, and by The coordination of the electromagnet 241 and the magnetic sheet 242, i.e., by controlling the magnitude of the current flowing into the electromagnet 241, the magnetic force of the electromagnet 241 is adjusted, thereby adjusting the clamping force of the clamping block 25 on the two side walls of the PCB board, so as to avoid the problem that the PCB board is squeezed and broken by the clamping blocks 25 on both sides due to excessive clamping force, and to prevent the PCB board from tilting due to the failure of stable clamping due to too small clamping force. The tilted PCB board will cause the collected PCB board image information to tilt, thereby changing the shape and position of the PCB board in the image, resulting in inaccurate comparison between the PCB board and the image template of the normal PCB board, thereby affecting the accuracy of PCB board detection;

[0042] By setting the clamp block 25 to be made of silicone rubber material, the clamp block 25 is not only soft in texture but also has a high friction coefficient, so that the soft clamp block 25 will not cause extrusion damage to the edge of the PCB board, and the high friction coefficient of the clamp block 25 increases the friction between the clamp block 25 and the PCB board, thereby ensuring that the clamp block 25 can stably clamp the PCB board; and a V-shaped groove 251 is provided on the side of the clamp block 25 away from the groove 24, so that the V-shaped groove 251 can increase the roughness of the surface of the clamp block 25, so that the friction between the clamp block 25 and the PCB board is further increased, thereby ensuring that the clamp block 25 can stably clamp the PCB board and avoid the PCB board from tilting; ensuring that the shape and position of the PCB board in the captured image meet the standard, and ensuring that it can be compared with the image template of the normal PCB board Accurate matching; and because an image detector 15 is installed outside the feed port 11 of the machine body 1, the image detector 15 detects the position of the PCB board to ensure that the PCB board can be transported through the feed port 11 in parallel with the clamping block 25, so that when the clamping block 25 clamps the PCB board, the clamping block 25 can stably clamp the two side walls of the PCB board, avoiding the problem that the clamping block 25 is clamped at the corners of the PCB board due to the PCB board not being parallel to the clamping block 25, so that the PCB board tilts due to unstable clamping during the detection process; thereby ensuring that the clamping block 25 can stably clamp the PCB board, ensuring that the shape and position of the PCB board in the captured image meet the standard, ensuring that it can accurately match the image template of the normal PCB board, and further improving the accuracy of PCB board detection;

[0043] At this time, the external conveying system is controlled to stop, so that the conveyor belt 132 drives the PCB board to move toward the direction close to the image detector 15. When the PCB board passes under the image detector near the feed port 11, the image detector 15 near the feed port 11 will perform a visual inspection on the front of the PCB board; when the conveyor belt 132 drives the PCB board to pass the image detector 15 near the feed port 11, the turning roller 2 connected to the upper end of the conveyor belt 132 will drive the transmission gears 22 at both ends to move toward the direction close to the rack 23 until the transmission gear 22 contacts the rack 23. At this time, the transmission gear 22 contacts the rack 23. The meshed transmission gear 22 rolls on the upper end surface of the rack 23 under the drive of the flip roller 2, so that the rolling transmission gear 22 drives the flip roller 2 to rotate, so that the flip roller 2 drives the clamped PCB board to flip upward through the clamping rod 21 and the clamping block 25; when the transmission gear 22 passes over the rack 23, the transmission gear 22 drives the flip roller 2 to rotate 180°, so that the flip roller 2 drives the PCB board to flip 180°, at this time the front side of the PCB board flips and faces the conveyor belt 132, and the back side of the PCB board flips upward; then the conveyor belt 132 drives the PCB board to the image detection area near the discharge port 12 The image detector 15 moves in the direction of the image detector 15, so that the flipped PCB board passes under the image detector 15 near the discharge port 12. At this time, the image detector 15 near the discharge port 12 detects the back of the PCB board; when the PCB board passes over the image detector 15 near the discharge port 12 driven by the conveyor belt 132, the electromagnetic sheet 242 is controlled to be powered off, so that the magnetic sheet 242 is no longer pushed by the magnetic repulsion, so that the magnetic sheet 242 drives the clamping block 25 to be adsorbed on the bottom of the groove 24, and the clamping block 25 enters the groove 24 and no longer clamps the PCB board, so that the conveyor belt 132 conveys the PCB The board is discharged from the discharge port 12 to the external conveying system, so that the external conveying system conveys the PCB board to the next process; at this time, the conveying belt 132 drives the conveying roller 131 to rotate downward, until the conveying belt 132 drives the conveying roller 131 to move toward the bottom of the installation groove 13; at this time, the clamping rod 21 moves downward under the action of its own gravity, and at this time, the clamping rod 21 and the conveying belt 132 rotate downward, and the clamping rod 21 rotates relative to the conveying belt 132 in the direction away from the conveying belt 132; until the conveying belt 132 is parallel to the bottom of the installation groove 13, at this time, the clamping rod 21 and the conveying belt 132 are in a vertical state and vertically downward;The conveyor belt 132 is controlled to run so that the conveyor belt 132 drives the clamping rod 21 which is vertically downward to move toward the feeding port 11. When the conveyor belt 132 drives the clamping rod 21 which is vertically downward to move to the conveying roller 131 which is close to the feeding port 11, the conveyor belt 132 rotates upward, and the clamping rod 21 moves toward the conveyor belt 132 under the action of its own gravity. As the conveyor belt 132 contacts the clamping rod 21, the conveyor belt 132 supports the clamping rod 21 until the conveyor belt 132 drives the clamping rod 21 to the top of the conveyor belt 132. At this time, the clamping rod 21 is located at the upper end surface of the conveyor belt 132 and faces the feeding port 11. At this time, the clamping rod 21 is reset and starts to clamp the next PCB board.

[0044] The present invention realizes flipping of the PCB board by arranging a conveying roller 131, so that both the front and back sides of the PCB board can be visually inspected, thereby reducing the increase in production time caused by manual flipping and improving the production efficiency of the production line; and arranging the clamping block 25 to clamp the two sides of the PCB board, not only avoiding the clamping block 25 from blocking the image acquisition of the PCB board and ensuring the accuracy of the image acquisition of the PCB board, but also enabling the clamping block 25 to stably clamp the PCB board and prevent the image of the PCB board from being offset in shape and position due to the tilted position, thereby ensuring that it can accurately match the image template of the normal PCB board, so that the accuracy of the detection of the PCB board is further improved.

[0045] As an embodiment of the present invention, an airbag 28 is fixedly connected to the upper end of the conveyor belt 132; the airbag 28 is arranged in a fan shape; the end of the airbag 28 away from the conveyor belt 132 is fixedly connected to the clamping rod 21; the side of the turning roller 2 close to the clamping rod 21 is provided with an air hole 133 connected to the airbag 28; the upper end of the conveyor belt 132 is provided with an air inlet 16 connected to the airbag 28.

[0046] As an embodiment of the present invention, a one-way valve 161 is installed in both the air inlet 16 and the air hole 133; and the end of the air hole 133 away from the airbag 28 is configured to be in a frustum shape.

[0047] As an embodiment of the present invention, a strip groove 29 is provided at the upper end of the conveyor belt 132; an air film 291 is embedded and fixed in the strip groove 29; an air passage 292 is provided inside the conveyor belt 132; one end of the air passage 292 is connected to the strip groove 29, and the other end is connected to the air bag 28;

[0048] During operation, as the conveyor belt 132 is conveying the PCB board, debris may be attached to the surface of the PCB board, so that the debris attached to the surface of the PCB board will not only partially block the route of the circuit on the surface of the PCB board, but also block the welding points on the surface of the PCB board, so that the part blocked by the debris in the collected PCB board image cannot be accurately matched with the image template of the normal PCB board, thereby causing the welding point to be missed and the circuit to be misjudged as a short circuit. In the process of conveying the PCB board, the user can directly observe the debris on the front of the PCB board and directly clean the debris on the front of the PCB board, while the debris on the back of the PCB board cannot be directly observed due to the obstruction of the PCB board. Therefore, the present invention sets an air bag 28, so that in the process of turning over the PCB board, the fan-shaped air bag 28 will be squeezed by the clamping rod 21, so that the gas in the air bag 28 is ejected through the one-way valve 161 of the air hole 133, so that the gas ejected through the air hole 133 can blow toward the PC The back of the B board is formed by the air hole 133, so that the sundries attached to the back of the PCB board are separated from the PCB board under the blowing of the gas, so as to ensure the cleanliness of the back of the PCB board and avoid the sundries attached to the back of the PCB board from interfering with the image detection of the back of the PCB board, thereby improving the detection accuracy of the back of the PCB, so that the practical application effect of the present invention is improved; and the setting of the air inlet 16 is that when the conveyor belt 132 drives the clamping rod 21 to flip, the clamping rod 21 will pull the air bag 28 to stretch, and at this time, the external gas enters the air bag 28 through the one-way valve 161 of the air inlet 16; and the end of the air hole 133 away from the air bag 28 is set to be a cone shape, so that when the gas flows out through the end of the air hole 133 away from the air bag 28, the gas can be compressed and the speed of gas ejection is accelerated, so that the gas can blow the sundries on the back of the PCB board strongly, ensuring that the back of the PCB board will not be blocked by the sundries, thereby ensuring the accuracy of collecting the image of the PCB board, so that the image detection effect of the PCB board is more accurate;

[0049] When it is necessary to quickly inspect the PCB board, it is necessary to control the conveying speed of the conveyor belt 132 to be accelerated, so that the conveyor belt 132 drives the transmission gear 22 to move faster through the conveying roller 131, so that the transmission gear 22 quickly rolls over the meshing rack 23. At this time, the rotation speed of the transmission gear 22 meshing with the rack 23 is accelerated, so that the transmission gear 22 drives the PCB board clamped by the clamp block 25 to quickly flip through the conveying roller 131. When the PCB board is quickly flipped, the front side of the flipped PCB board will hit the conveyor belt 132 under the action of inertia, thereby causing damage to the circuit and other tiny components on the front side of the PCB board. Therefore, the present invention sets an air film 291, and when the transmission gear 22 drives the clamping rod 21 to flip through the conveying roller 131, the clamping rod 2 The clamping block 25 drives the supported PCB to flip toward the direction close to the airbag 28; at this time, the conveying roller 131 drives the clamping rod 21 to flip, so that the clamping rod 21 squeezes the airbag 28, so that part of the gas in the airbag 28 is ejected through the air hole 133, and the other part of the gas enters the strip groove 29, so that the strip groove 29 is inflated and the air film 291 bulges; when the clamping block 25 drives the PCB to flip, the PCB will contact the bulging air film 291, so that the air film 291 supports and buffers the flipped PCB, reducing the contact impact force between the PCB and the surface of the conveyor belt 132, thereby avoiding damage to the circuit and other tiny components on the front of the PCB, ensuring the quality of the surface of the PCB, and improving the practical application effect of the present invention.

[0050] Embodiment 2: This embodiment differs from Embodiment 1 in that:

[0051] The control unit includes a push rod 26; the clamping block 25 is connected to the bottom of the groove 24 via a connecting spring 261; circular grooves 262 are provided at both ends of the flip roller 2; the push rod 26 is slidably sealed and connected in the circular groove 262; an oil passage 263 communicating with the groove 24 is provided inside the clamping rod 21; the end of the oil passage 263 away from the groove 24 is communicated with the circular groove 262; a trapezoidal block 27 is fixedly connected to the groove wall of the mounting groove 13;

[0052] During operation, when the PCB board moves along the conveyor belt 132 toward the conveyor roller 131 and contacts the conveyor roller 131 under the push of the external conveying system, the conveyor roller 131 blocks the PCB board due to the contact between the end of the PCB board and the conveyor roller 131, so that the PCB board moves at the same speed as the conveyor belt 132 under the blockage of the conveyor roller 131; if the pushing speed of the external conveying system is greater than the speed of the conveyor belt 132, the external conveying system and the PCB board slip, so that sliding friction is generated between the PCB board and the external conveying system. Therefore, when the PCB board contacts the conveying roller 131, the external conveying system is controlled to have the same conveying speed as the conveying belt 132, so that the PCB board and the conveying belt 132 move synchronously; when the PCB board is completely conveyed to the conveying belt 132, the conveying belt 132 will drive the PCB board supported at the upper end to move toward the direction close to the image detector 15, so that the conveying belt 132 drives the conveying roller 131 to move toward the direction close to the trapezoidal block 27, so that the conveying roller 131 drives the push rod 26 to the trapezoidal block 27; at this time, the push rod 26 and the trapezoidal block 27, so that the push rod 26 slides along the inclined surface of the trapezoidal block 27; because the circular groove 262 is filled with hydraulic oil, the push rod 26 will squeeze the hydraulic oil in the circular groove 262 through the oil passage 263 into the groove 24 under the action of the blocking force of the inclined surface of the trapezoidal block 27, so that the hydraulic oil entering the groove 24 will push the clamping block 25 to stretch the connecting spring 261 out of the groove 24; so that the clamping block 25 clamps the PCB board on the conveyor belt 132; when the PCB flips over and passes over the image detector 15 near the discharge port 12, the push rod 26 passes over the trapezoidal block 27, the clamp block 25 enters the groove 24 under the pull of the restoring force of the connecting spring 261, so that the PCB board is no longer clamped by the clamp block 25 and is pushed out from the discharge port 12 by the conveying roller 131; the present invention cooperates with the push rod 26 and the trapezoidal block 27, so that the push rod 26 blocked by the trapezoidal block 27 can squeeze the hydraulic oil in the circular groove 262 to push the clamp block 25 to clamp the PCB board, compared with the electromagnet 241 and the pressure sensor 243, it can save the consumption of electric energy; greatly reduce the production cost, so that the practical application effect of the present invention is further improved.

[0053] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A production line automatic detection device with image recognition function, characterized in that: include: A machine body (1), wherein one end of the machine body (1) is provided with a feed port (11), and the other end is provided with a discharge port (12); a mounting groove (13) extending through the discharge port (12) is provided inside the machine body (1); a groove wall of the mounting groove (13) is rotatably connected to a conveying roller (131); the number of the conveying rollers (131) is at least two; a conveying belt (132) is wound between the conveying rollers (131); a driving motor (14) is fixedly mounted on one side of the machine body (1); the driving motor (14) is used to drive the conveying rollers (131) to rotate; two image detectors (15) are arranged above the conveying belt (132); the two image detectors (15) are fixedly connected to the machine body (1); A turning roller (2), the turning roller (2) being rotatably connected to the conveyor belt (132); a clamping rod (21) is fixedly mounted on one side of the turning roller (2); two clamping rods (21) are provided; the two clamping rods (21) are distributed on both sides of the conveyor belt (132); transmission gears (22) are fixedly connected to both ends of the turning roller (2); a rack (23) meshing with the transmission gear (22) is fixedly connected to the inner wall of the machine body (1); A groove (24) is provided on one side of the two clamping rods (21) close to each other; a clamping block (25) is slidably connected in the groove (24); a regulating unit is installed between the clamping block (25) and the bottom of the groove (24); the regulating unit is used to control the clamping block (25) to enter and exit the groove (24); The control unit comprises an electromagnet (241); the electromagnet (241) is fixedly connected to the bottom of the groove (24); a magnetic sheet (242) is embedded on one side of the clamping block (25) close to the bottom of the groove (24); a pressure sensor (243) is embedded on one side of the turning roller (2) close to the clamping block (25); The regulating unit comprises a push rod (26); the clamping block (25) is connected to the bottom of the groove (24) via a connecting spring (261); circular grooves (262) are provided at both ends of the turning roller (2); the push rod (26) is slidingly sealed and connected in the circular groove (262); an oil passage (263) connected to the groove (24) is provided inside the clamping rod (21); the end of the oil passage (263) away from the groove (24) is connected to the circular groove (262); and a trapezoidal block (27) is fixedly connected to the groove wall of the mounting groove (13).

2. The production line automatic detection equipment with image recognition function according to claim 1, characterized in that: The clamping block (25) is made of silicone rubber material; a V-shaped groove (251) is formed on a side of the clamping block (25) away from the groove (24).

3. The production line automatic detection equipment with image recognition function according to claim 2 is characterized in that: The upper end of the conveyor belt (132) is fixedly connected with an airbag (28); the airbag (28) is arranged in a fan shape; the end of the airbag (28) away from the conveyor belt (132) is fixedly connected with the clamping rod (21); the side of the turning roller (2) close to the clamping rod (21) is provided with an air hole (133) connected with the airbag (28); the upper end of the conveyor belt (132) is provided with an air inlet (16) connected with the airbag (28).

4. The production line automatic detection equipment with image recognition function according to claim 3 is characterized by: One-way valves (161) are installed in both the air inlet (16) and the air hole (133); and the end of the air hole (133) away from the air bag (28) is configured in a frustum shape.

5. The production line automatic detection equipment with image recognition function according to claim 4 is characterized in that: A strip groove (29) is provided at the upper end of the conveyor belt (132); an air film (291) is embedded and fixed in the strip groove (29); an air passage (292) is provided inside the conveyor belt (132); one end of the air passage (292) is connected to the strip groove (29), and the other end is connected to the air bag (28).

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