High-speed high-precision visual inspection equipment

Abstract

The invention discloses a high-speed high-precision visual inspection device which is composed of a feeding machine, an inspection machine and a sorting machine from input to output, a tray bearing materials is conveyed to the inspection machine through the feeding machine, the inspection machine visually inspects the materials borne by the tray and recognizes good products and defective products, and the sorting machine is used for sorting the good products and the defective products. And then the products are conveyed to the sorting machine, and the sorting machine sorts out the good products and the defective products and outputs the good products and the defective products in a tray form. The high-speed and high-precision visual inspection equipment provided by the invention can realize rapid judgment, screening and sorting of good products and defective products, and compared with manual troubleshooting and screening, the detection accuracy is improved, the detection is standardized, the product quality is ensured, meanwhile, the working efficiency can be greatly improved, and the manual labor intensity is reduced.

Description

Technical Field

[0001] This invention relates to the field of FPC inspection equipment technology, and specifically to a high-speed, high-precision visual inspection device. Background Technology

[0002] Defects in products such as FPC include scratches, breakage, and poor welding. Currently, the detection and judgment of defective products still largely rely on manual screening. Manual inspection of defects is inefficient, and the judgment criteria for defects are unstable and vary from person to person. As factory production becomes increasingly automated and the quality requirements for products become higher, it is particularly important to identify and select defective products in a timely manner during automated production. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-speed, high-precision visual inspection device that can quickly judge, screen, and sort good and bad products, thereby improving work efficiency and reducing labor intensity.

[0004] The technical solution of the present invention is as follows:

[0005] A high-speed, high-precision visual inspection device is provided, which consists of three parts from input to output: a feeder, an inspection machine, and a sorting machine. The feeder transports a tray carrying materials to the inspection machine, which uses visual inspection to identify good and defective products on the tray and then transports them to the sorting machine, which sorts out the good and defective products and outputs them in the form of trays.

[0006] Furthermore, the feeding machine includes an online feeding mechanism, a handling robot, and an offline buffer mechanism. The handling robot is located on one side of the online feeding mechanism and the offline buffer mechanism. The upstream equipment transports the tray carrying the material to the online feeding mechanism, and then the handling robot transports the tray carrying the material to the offline buffer mechanism for buffering and output to the detection machine.

[0007] Furthermore, the inspection machine includes an infeed / outfeed conveyor line, a first suction nozzle transfer mechanism, a second suction nozzle transfer mechanism, a reverse inspection vision mechanism, an inspection rotating platform, a front inspection vision mechanism, and a side inspection vision mechanism. The infeed end of the infeed / outfeed conveyor line corresponds to the feeder, and the outlet end of the infeed / outfeed conveyor line corresponds to the sorter. The infeed / outfeed conveyor line, the reverse inspection vision mechanism, the inspection rotating platform, the front inspection vision mechanism, and the side inspection vision mechanism are arranged sequentially along the length of the inspection machine. Multiple inspection rotating platforms are arranged along the width of the inspection machine. The first suction nozzle transfer mechanism and the second suction nozzle transfer mechanism are arranged opposite to each other on both sides of the infeed / outfeed conveyor line, the reverse inspection vision mechanism, and the inspection rotating platform. The material tray, carrying materials, is received from the feeder via the infeed and outfeed conveyor line. Then, the materials on the tray are transferred towards the inspection rotating platform via the first and second suction nozzle moving mechanisms, respectively. During the transfer, the bottom surface of the material is photographed by the reverse inspection vision mechanism. Next, the material is transferred to the front inspection vision mechanism via the inspection rotating platform to photograph the top surface of the material. Then, it is transferred to the side inspection vision mechanism to rotate and photograph multiple side views. After the inspection is completed, the material is returned to its original position on the tray. This process continues until all materials on the tray have been inspected and returned to their original positions. The computer then identifies good and bad products, records the location of bad products, and finally outputs the results to the sorting machine.

[0008] Furthermore, a material tray positioning mechanism is provided on the feeding and discharging conveyor line.

[0009] Furthermore, the sorting machine is divided into an NG rejection area, an OK storage area, an NG sorting area, an NG storage area, an OK replenishment area, and an OK waiting area. The NG rejection area, NG sorting area, and OK replenishment area are arranged sequentially along the length of the sorting machine. The OK storage area, NG storage area, and OK waiting area are located on opposite sides of the NG rejection area, NG sorting area, and OK replenishment area. A good product conveyor line is installed on the NG rejection area. An OK storage bin is installed on the OK storage area. A defective product conveyor line is installed on the NG sorting area. An NG storage bin is installed on the NG storage area. The OK replenishment area and OK waiting area are connected by sliding rails. An upper cutting OK waiting replenishment platform and a lower cutting lifting OK replenishment platform are movably mounted on these sliding rails. A sorting robot is installed on one side of the NG rejection area, NG sorting area, and OK replenishment area. It receives trays from the inspection machine via the good product conveyor line, and then picks up the defective products from the trays and places them on the empty trays of the defective product conveyor line. After the empty trays are filled, the NG trays are transported to the NG storage bin via the defective product conveyor line for storage. The empty spaces on the trays are replenished by the sorting robot from the OK replenishment trays on the cutting and lifting OK replenishment platform. After the trays are filled, the OK trays are transported to the OK storage bin via the good product conveyor line for storage. The empty trays on the cutting and lifting OK replenishment platform after replenishment are then transported to the defective product conveyor line by the sorting robot.

[0010] Compared with existing technologies, the beneficial effects of this invention are as follows: Compared with manual screening, this invention can automatically judge, screen and sort good and bad products, improve detection accuracy, establish unified detection standards, ensure product quality, and at the same time greatly improve work efficiency and reduce manual labor intensity. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A three-dimensional structural diagram of a high-speed, high-precision visual inspection device provided by the present invention;

[0013] Figure 2 A planar structural diagram of a high-speed, high-precision visual inspection device provided by the present invention;

[0014] Figure 3 This is a three-dimensional structural diagram of the feeding machine described in this invention;

[0015] Figure 4 This is a three-dimensional structural diagram of the testing machine described in this invention;

[0016] Figure 5 This is a three-dimensional structural diagram of the sorting machine described in this invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] To illustrate the technical solution described in this invention, specific embodiments are described below.

[0019] Example

[0020] Please see Figure 1 This embodiment provides a high-speed, high-precision visual inspection device. The device consists of three parts from input to output: a feeder 1, an inspection machine 2, and a sorting machine 3. The feeder 1 transports a tray carrying materials to the inspection machine 2. The inspection machine 2 uses visual inspection to detect the materials on the tray and identifies good and defective products. The materials are then transported to the sorting machine 3, which sorts out the good and defective products and outputs them in the form of trays. This achieves automatic judgment, screening, and sorting of good and defective products.

[0021] Combination Figure 2 , Figure 3 As shown, the feeding machine 1 includes an online feeding mechanism 11, a handling robot 12, and an offline buffer mechanism 13. The handling robot 12 is located on one side of the online feeding mechanism 11 and the offline buffer mechanism 13. The upstream equipment transports the tray carrying the material to the online feeding mechanism 11, and then the handling robot 12 transports the tray carrying the material to the offline buffer mechanism 13 for buffering and output to the detection machine 2. The online feeding mechanism 11 uses a belt conveyor to transport the tray, driven by a stepper motor, with the conveyor line width adjusted by a lead screw device, and the tray status sensed by a photoelectric sensor. The handling robot 12 uses a gantry frame, a linear motor in the Y direction, and a lead screw in the Z direction, and uses a vacuum suction cup to pick up the tray. The offline buffer mechanism has a storage function, and the storage status is sensed by a photoelectric sensor.

[0022] Combination Figure 2 , Figure 4As shown, the inspection machine 2 includes an infeed / outfeed conveyor line 21, a first suction nozzle transfer mechanism 22, a second suction nozzle transfer mechanism 23, a reverse inspection vision mechanism 24, an inspection rotating platform 25, a front inspection vision mechanism 26, and a side inspection vision mechanism 27. The infeed end of the infeed / outfeed conveyor line 21 corresponds to the feeder 1, and the outfeed end of the infeed / outfeed conveyor line 21 corresponds to the sorter 3. The infeed / outfeed conveyor line 21, the reverse inspection vision mechanism 24, the inspection rotating platform 25, the front inspection vision mechanism 26, and the side inspection vision mechanism 27 are arranged sequentially along the length of the inspection machine 2. Multiple inspection rotating platforms 25 are arranged along the width of the inspection machine 2. The first suction nozzle transfer mechanism 22 and the second suction nozzle transfer mechanism 23 are arranged opposite to each other on the infeed / outfeed conveyor line 21, the reverse inspection vision mechanism 24, and the inspection rotating platform 25. On both sides of the rotating platform 25, trays carrying materials are received from the feeder 1 via the infeed and outfeed conveyor lines 21. Then, the materials carried on the trays on the infeed and outfeed conveyor lines 21 are transferred to the rotating platform 25 via the first suction nozzle moving mechanism 22 and the second suction nozzle moving mechanism 23, respectively. During the transfer, the bottom surface of the material is photographed by the reverse inspection vision mechanism 24. Then, the material is transferred to the front inspection vision mechanism 26 via the rotating platform 25 to photograph the top surface of the material. Then, it is transferred to the side inspection vision mechanism 27 to rotate and photograph multiple side views. After the inspection is completed, the material is returned to its original position on the tray. After all the materials on the tray have been inspected and returned to their original positions, the computer identifies good and bad products and records the position of bad products. Finally, the results are output to the sorting machine 3. The feeding and discharging conveyor line 21 is equipped with a tray positioning mechanism 28, which can provide precise positioning of the tray. When the tray is initially in place, the cam device lifts the positioning block, and the screw device drives the positioning block to clamp the tray to complete the precise positioning. The first suction nozzle transfer mechanism 22 and the second suction nozzle transfer mechanism 23 are driven by a gantry frame and three linear motors in the XYZ directions, and use vacuum suction cups or suction nozzles to pick up parts. The reverse inspection vision mechanism 24, the front inspection vision mechanism 26, and the side inspection vision mechanism 27 are all composed of cameras and lighting systems, and can move along the X direction driven by the screw in the X direction. There are a total of 8 inspection rotating platforms 25. The top adopts a quick-release vacuum adsorption platform, which is driven by an absolute stepper motor or servo motor to rotate. The platform and the rotating motor move along the Y direction using a screw.

[0023] Combination Figure 2 , Figure 5As shown, the sorting machine 3 is divided into an NG rejection area 31, an OK storage area 32, an NG sorting area 33, an NG storage area 34, an OK replenishment area 35, and an OK waiting area 36. The NG rejection area 37, NG sorting area 38, and OK replenishment area 35 are arranged sequentially along the length of the sorting machine 3. The OK storage area 32, NG storage area 34, and OK waiting area 36 are located on one side of the NG rejection area 31, NG sorting area 33, and OK replenishment area 35, respectively. A good product conveyor line 311 is installed on the NG rejection area 31. An OK storage bin 321 is installed on the OK storage area 32. A defective product conveyor line 331 is installed on the NG sorting area 33. An NG storage bin 341 is installed on the NG storage area 34. A slide rail 351 is arranged opposite to the OK replenishment area 35 and the OK waiting area 36. An upward-cutting OK waiting replenishment platform 352 is movably mounted on the slide rail 351. Along with the bottom-cutting lifting OK replenishment platform 353, a sorting robot 39 is installed on one side of the NG rejection area 31, NG sorting area 33, and OK replenishment area 35. The robot receives the tray from the inspection machine 2 through the good product conveyor line 311, and then picks up the defective products on the tray and places them on the empty tray of the defective product conveyor line 331. After the empty tray is filled, the NG tray is transported to the NG storage bin 341 for storage through the defective product conveyor line 331. The empty space on the tray is replenished by the sorting robot 39 from the OK products on the bottom-cutting lifting OK replenishment platform 353. After the tray is filled, the OK tray is transported to the OK storage bin 321 for storage through the good product conveyor line 311. The empty tray after replenishment on the bottom-cutting lifting OK replenishment platform 353 is then transported to the defective product conveyor line 331 by the sorting robot 39. The sorting robot 39 has the functions of picking up parts and picking up trays. It includes two sets of ZR direction part suction cups and one set of Z direction tray suction cups. The sorting robot 39 is supported by a gantry frame and moves by two linear motors in the XY direction. The lower cutting lifting OK replenishment platform 353 can move along the Z axis to ensure safe repositioning with the upper cutting OK waiting replenishment platform 352 and that the platform height is consistent after repositioning. The upper cutting OK waiting replenishment platform 352 and the lower cutting lifting OK replenishment platform 353 adopt four-sided positioning, and a motor drives four positioning blocks to clamp the tray.

[0024] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-speed high-precision visual inspection apparatus, characterized by comprising: The device is composed of a feeding machine, a detection machine and a sorting machine from input to output, the Tray disc carrying the materials is conveyed to the detection machine through the feeding machine, the detection machine detects the materials carried by the Tray disc through visual detection and identifies the good products and the defective products, and then the materials are conveyed to the sorting machine, the sorting machine sorts out the good products and the defective products and outputs them in the form of Tray disc.

2. The high-speed high-precision visual inspection apparatus according to claim 1, characterized in that: The feeding machine comprises an online feeding mechanism, a carrying manipulator and an offline caching mechanism, the carrying manipulator is arranged on one side of the online feeding mechanism and the offline caching mechanism, the Tray disc carrying the materials is conveyed to the online feeding mechanism by the upstream equipment, and then the Tray disc carrying the materials is carried to the offline caching mechanism by the carrying manipulator and is output to the detection machine.

3. The high-speed high-precision visual inspection apparatus according to claim 1, characterized in that: The detection machine comprises an in-out conveying line, a first suction nozzle transfer mechanism, a second suction nozzle transfer mechanism, a back surface detection visual mechanism, a detection rotary table, a front surface detection visual mechanism and a side surface detection visual mechanism, the in-out conveying line is corresponding to the feeding machine at the in-feed end, and corresponding to the sorting machine at the out-feed end, the in-out conveying line, the back surface detection visual mechanism, the detection rotary table, the front surface detection visual mechanism and the side surface detection visual mechanism are sequentially arranged along the length direction of the detection machine, the detection rotary table is provided with a plurality of detection rotary tables along the width direction of the detection machine, the first suction nozzle transfer mechanism and the second suction nozzle transfer mechanism are oppositely arranged on both sides of the in-out conveying line, the back surface detection visual mechanism and the detection rotary table, the Tray disc carrying the materials is received from the feeding machine through the in-out conveying line, and then the materials carried by the Tray disc on the in-out conveying line are transferred to the detection rotary table through the first suction nozzle transfer mechanism and the second suction nozzle transfer mechanism respectively, the bottom surface of the materials is photographed through the back surface detection visual mechanism in the transfer process, then the top surface of the materials is photographed by the front surface detection visual mechanism through the detection rotary table, and then the materials are rotated to the side surface detection visual mechanism to be photographed, after the detection is completed, the materials are returned to the original position on the Tray disc, until all the materials on the Tray disc are detected and returned to the original position, the good products and the defective products are identified by the computer, the positions of the defective products are recorded, and finally the materials are output to the sorting machine.

4. The high-speed high-precision visual inspection apparatus according to claim 3, characterized in that: The in-out conveying line is provided with a tray positioning mechanism.

5. The high-speed high-precision visual inspection apparatus according to claim 1, characterized in that: The sorting machine is divided into NG rejection area, OK storage area, NG sorting area, NG storage area, OK feeding area, OK waiting area, the NG rejection area, the NG sorting area, the OK feeding area are sequentially arranged along the length direction of the sorting machine, the OK storage area, the NG storage area, the OK waiting area are located on one side of the NG rejection area, the NG sorting area, the OK feeding area, the NG rejection area is provided with a good product conveying line, the OK storage area is provided with an OK storage bin, the NG sorting area is provided with a defective product conveying line, the NG storage area is provided with an NG storage bin, the OK feeding area and the OK waiting area are oppositely provided with slide rails, the slide rails are oppositely movably provided with an upper cut OK waiting feeding platform and a lower cut lifting OK feeding platform, one side of the NG rejection area, the NG sorting area and the OK feeding area is provided with a sorting mechanical hand, the Tray disc is received from the detection machine through the good product conveying line, then the defective products on the Tray disc are picked up by the sorting mechanical hand and placed on the empty tray disc of the defective product conveying line, until the empty tray disc is filled, then the NG tray is transported to the NG storage bin for storage through the defective product conveying line, the empty position on the Tray disc is supplemented with OK products on the empty tray disc of the lower cut lifting OK feeding platform through the sorting mechanical hand, until the Tray disc is filled, then the OK tray is transported to the OK storage bin for storage through the good product conveying line, the empty tray disc after the feeding on the lower cut lifting OK feeding platform is carried to the defective product conveying line by the sorting mechanical hand.

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