Full-automatic transfer printing and laser etching detection equipment applying machine vision algorithm

Abstract

The invention relates to the technical field of plastic processing automation equipment, in particular to full-automatic transfer printing and laser etching detection equipment applying a machine vision algorithm, which comprises a conveying device, a feeding device, a transfer printing device, a laser etching device, a vision detection device, a discharging device and a control system, the transfer printing device, the laser etching device and the visual detection device are sequentially installed in the conveying direction of the conveying device, the feeding device places a workpiece on the conveying device, the workpiece sequentially passes through the transfer printing device, the laser etching device and the visual detection device, and therefore printing, laser etching and detection operation of the workpiece is completed. The discharging device is installed at the tail end of the conveying device and used for conducting discharging operation on the operated workpieces. And the control system controls the equipment to operate automatically. In conclusion, by integrating the functions of pad printing, laser etching and automatic detection, automatic production is achieved, the production efficiency is improved, the labor cost is reduced, and meanwhile the stability and consistency of the product quality are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic processing automation equipment, and in particular to a fully automatic pad printing laser engraving detection device using a machine vision algorithm. Background Art

[0002] In existing industrial production, pad printing and laser engraving are common surface treatment technologies, widely used in electronic plastics, toys, packaging and other fields. However, most traditional pad printing and laser engraving equipment requires manual participation, and there are problems such as low production efficiency, high labor costs, and difficult to ensure product quality. In addition, the inspection process often needs to be carried out independently, which increases the complexity and time cost of the production process.

[0003] For example, a Chinese patent document with publication number CN116001434A discloses a printing device, including a frame, a visual inspection device, a position correction device, a printing device and a transport device. The visual inspection device is used to detect the position and direction of the product. The position correction device is connected to the visual inspection device by signal, and the position correction device is used to adjust the placement position and direction of the product. The printing device is used to perform process printing on the product. The transport device is used to move the product to the printing device.

[0004] For example, a Chinese patent document with publication number CN118123254A discloses an automatic laser engraving device and a control method thereof, comprising a workbench, a conveyor belt, a position adjustment mechanism, a visual inspection mechanism, a laser engraving mechanism and a processor, wherein the conveyor belt is installed on the workbench, the position adjustment mechanism is installed on one side of the conveyor belt, and the visual inspection mechanism and the laser engraving mechanism are installed on the position adjustment mechanism; the conveyor belt is used to convey products to the bottom of the visual inspection mechanism and the laser engraving mechanism, the visual inspection mechanism is used to collect product inspection images and upload them to the processor; the processor is used to generate a position adjustment signal and a laser engraving signal according to the product inspection image, and send the position adjustment signal to the position adjustment mechanism, and send the laser engraving signal to the laser engraving mechanism; the position adjustment mechanism is used to adjust the position of the laser engraving mechanism according to the position adjustment signal.

[0005] The technical problem that needs to be solved is how to provide a fully automatic pad printing and laser engraving inspection equipment that uses machine vision algorithms, so that it can integrate pad printing, laser engraving and automatic inspection functions to realize automated production processes, improve production efficiency, reduce labor costs, and ensure the stability and consistency of product quality. Summary of the invention

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] The present invention provides a fully automatic pad printing and laser engraving detection equipment using a machine vision algorithm, comprising a work table, a conveying device, a loading device, a pad printing device, a laser engraving device, a visual inspection device, a unloading device and a control system, wherein the conveying device is installed on the work table, and the pad printing device, the laser engraving device and the visual inspection device are sequentially installed along the conveying direction of the conveying device, the loading device is installed at the starting end of the conveying device, and is used for loading a workpiece, placing the workpiece on the conveying device, and allowing the workpiece to pass through the pad printing device, the laser engraving device and the visual inspection device in sequence, thereby completing the printing, laser engraving and inspection operations of the workpiece; the unloading device is installed at the end of the conveying device, and is used for unloading the workpiece after the operation is completed; the control system is respectively connected to the conveying device, the loading device, the pad printing device, the laser engraving device, the visual inspection device and the unloading device, thereby controlling the equipment to operate automatically.

[0008] As a further solution of the present invention: the conveying device is provided with a conveying bracket, a conveying motor, a conveying belt, an active roller and a driven roller, the conveying bracket and the conveying motor are respectively installed on the work table, the output shaft of the conveying motor is drivingly connected to the active roller, the active roller and the driven roller are respectively rotatably connected to the conveying bracket, and the two ends of the conveying belt are respectively sleeved on the active roller and the driven roller, thereby forming a belt transmission system; a conveying base is fixedly connected to the conveying belt at a certain interval, and the conveying base is used to place and convey the workpiece.

[0009] As a further solution of the present invention: a material moving device is arranged above the conveying device, and a workpiece fixture is arranged on the working table, the workpiece fixture is used for placing the workpiece to be processed, and the material moving device is used for moving the workpiece from the conveying base to the workpiece fixture; the material moving device is provided with a first material moving bracket, a first material moving cylinder, a first material moving slide, a second material moving bracket, a second material moving cylinder, a second material moving slide, a finger cylinder and a material moving finger, the first material moving bracket is fixedly connected to the conveying bracket, the first material moving cylinder and the first material moving slide are respectively installed on the first material moving bracket, the second material moving bracket is installed on the slider end of the first material moving slide, and form a transmission connection with the piston end of the first material moving cylinder; the second material moving cylinder and the second material moving slide are respectively installed on the second material moving bracket, the finger cylinder is installed on the slider end of the second material moving slide, and form a transmission connection with the piston end of the second material moving cylinder; the material moving finger is installed on the piston end of the finger cylinder to perform a clamping operation on the workpiece.

[0010] As a further solution of the present invention: the loading device is provided with a material box holder, an empty box holder and a loading robot arm respectively installed on the work table, the material box holder and the empty box holder are respectively used for placing the material box containing the workpiece and the empty box for taking away the workpiece; the movable end of the loading robot arm is provided with a gripper assembly, the gripper assembly is used to grab the material box or the workpiece, so that the loading robot arm can move the material box or the workpiece.

[0011] As a further solution of the present invention: the gripper assembly is provided with a gripper bracket and a first gripper part, the gripper bracket is installed on the movable end of the loading robot arm; the first gripper part is provided with a first cylinder, a first support plate and a first suction cup, the first suction cup is installed on the first support plate, the first support plate is fixed to the piston end of the first cylinder, the first cylinder is installed on the upper part of the gripper bracket, and the gripper bracket is provided with a first through hole corresponding to the position of the first suction cup, so that the first cylinder can drive the first support plate to move downward, so that the first suction cup passes through the first through hole to adsorb and grasp the box body or the box cover.

[0012] As a further solution of the present invention: the gripper assembly is provided with a gripper bracket and a second gripper part, and the gripper bracket is installed on the movable end of the loading robot arm; the second gripper part is provided with a second support plate and a second suction cup, and the second support plate is installed on the gripper bracket, and the second suction cup is installed on the second support plate, and can adsorb and grasp the workpiece.

[0013] As a further solution of the present invention: the gripper assembly is provided with two groups of second gripper parts, and the two groups of second gripper parts are symmetrically installed on the gripper bracket respectively, so as to suck two workpieces simultaneously; the second gripper part is also provided with a gripper guide rail, a gripper slider and a second cylinder, the second cylinder and the gripper guide rail are respectively fixedly connected to the lower part of the gripper bracket, the gripper slider and the gripper guide rail cooperate with each other to form a linear motion system, the second support plate is fixedly connected to the gripper slider, and forms a transmission connection with the piston end of the second cylinder, so that the second cylinder is operated to drive the second support plate and the second suction cup to move linearly along the gripper guide rail.

[0014] As a further solution of the present invention: the pad printing device is provided with a pad printing support, a moving mechanism, a pad printing template, a pad printing head, an ink supply system and a cleaning system; the pad printing head is installed at the driving end of the moving mechanism, so that under the drive of the moving mechanism, the preset pattern on the pad printing template is transferred to the surface of the workpiece; the ink supply system is used to supply the required ink to the pad printing head and the pad printing template, and the cleaning system is used to clean the pad printing head and the pad printing template.

[0015] As a further solution of the present invention: the laser engraving device is provided with a laser engraving bracket, a laser engraving linear module and a laser engraving mechanism. The laser engraving bracket is installed on the work table, the laser engraving linear module is installed on the laser engraving bracket, and the laser engraving mechanism is installed on the driving end of the laser engraving linear module, thereby driving the laser engraving mechanism to move up and down a certain distance, and under the control of the control system, perform automated laser engraving operations on the workpiece.

[0016] As a further solution of the present invention: the visual inspection device is provided with a detection bracket, a visual sensor and an image processing unit. The detection bracket is installed on a work table, and the visual sensor and the image processing unit are respectively installed on the detection bracket. The visual sensor captures images of pad printing and laser engraving effects on the surface of the workpiece, and the image processing unit processes the captured images using a machine vision algorithm to identify and determine whether the quality of pad printing and laser engraving meets production requirements.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a conveying device on the work table, and integrating a pad printing device, a laser engraving device and a visual inspection device in the conveying direction of the conveying device, the workpiece can be printed, laser engraved and automatically inspected in sequence, realizing an automated production process, improving production efficiency, reducing labor costs, and ensuring the stability and consistency of product quality.

[0018] 2. A material transfer device is provided on the conveying device so that the workpiece on the conveying base can be automatically taken and placed on a corresponding workpiece fixture, so as to facilitate subsequent printing, laser engraving and testing operations.

[0019] 3. By setting a loading robot arm, it can pick up and move the box cover, box body, and workpiece of the material box respectively, thereby reducing the setting of moving parts. In addition, by setting the first gripper part above the gripper bracket, it can be installed with the second gripper part on the upper and lower parts of the same gripper bracket respectively, reducing the moving path of the entire loading robot arm, thereby reducing the difficulty of debugging the loading robot arm and saving the configuration cost of the equipment.

[0020] 4. Two sets of second grippers are symmetrically installed on the gripper bracket, so that it can suck and move two workpieces at the same time, and the gripper guide rail and the gripper slider form a linear motion system to optimize the movement stability of the second suction cup. The control system can also be used to synchronize the two sets of second cylinders so that the movement of the two workpieces is symmetrical along the connection point between the gripper bracket and the loading robot arm, thereby ensuring that the center of gravity of the gripper bracket remains stable and reducing the impact of the gripper bracket on the loading robot arm.

[0021] Through the above improvements, the present invention can provide a fully automatic pad printing and laser engraving detection equipment using a machine vision algorithm, so that it can realize an automated production process by integrating pad printing, laser engraving and automatic detection functions, improve production efficiency, reduce labor costs, and ensure the stability and consistency of product quality.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a structural schematic diagram of the overall device of the present invention; Figure 2 It is a structural schematic diagram of a feeding device and a conveying device of the present invention; Figure 3 It is a structural schematic diagram of the gripper bracket and the first gripper portion of the present invention; Figure 4 is a schematic structural diagram of the second gripper portion of the present invention; Figure 5 It is a schematic diagram of the structure of the conveying device and the laser engraving device of the present invention; Figure 6 It is a structural schematic diagram of the material moving device of the present invention; Figure 7 It is a structural schematic diagram of the pad printing device of the present invention; Figure 8 It is a structural schematic diagram of the visual inspection device and the material transfer device of the present invention; Fig. 9 It is a structural schematic diagram of the blanking device of the present invention.

[0025] The reference numerals and names in the figures are as follows: 10 work table; 11 workpiece fixture; 12 workpiece; 13 material box; 20 conveying device; 21 conveying bracket; 22 conveying motor; 23 conveying belt; 24 driving roller; 25 driven roller; 26 conveying base; 27 first sensor; 28 first sensor sheet; 29 second sensor; 30 material moving device; 31 first material moving bracket; 32 first material moving cylinder; 33 first material moving slide; 34 second material moving bracket; 35 second material moving cylinder; 36 second material moving slide; 37 finger cylinder; 38 material moving finger; 39 third material moving cylinder; 40 loading device; 41 material box bracket; 42 empty box bracket; 43 loading robot arm; 44 gripper bracket; 50 first gripper; 51 first cylinder; 52 first support plate; 53 first suction cup; 54 second gripper; 55 second support plate; 56 second suction cup; 57 gripper guide rail; 58 gripper slider; 59 second cylinder; 60 pad printing device; 61 pad printing bracket; 62 moving mechanism; 63 pad printing template; 64 pad printing head; 70 laser engraving device; 71 laser engraving bracket; 72 laser engraving linear module; 73 laser engraving mechanism; 80 visual inspection device; 81 inspection bracket; 82 visual sensor; 83 image processing unit; 90 unloading device; 91 unloading bracket; 92 unloading support plate; 93 unloading linear module; 94 unloading cylinder; 95 unloading suction cup; 96 qualified product conveyor belt; 97 defective product storage box. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 9In an embodiment of the present invention, a fully automatic pad printing laser engraving detection device using a machine vision algorithm includes an operating frame, a conveying device 20, a feeding device 40, a pad printing device 60, a laser engraving device 70, a visual inspection device 80, a feeding device 90 and a control system. The operating frame is equipped with an operating table 10, the conveying device 20 is installed on the operating table 10, and the pad printing device 60, the laser engraving device 70 and the visual inspection device 80 are installed in sequence along the conveying direction of the conveying device 20. The feeding device 40 is installed at the starting point of the conveying device 20. The end is used to load the workpiece 12, place the workpiece 12 on the conveying device 20, and make the workpiece 12 pass through the pad printing device 60, the laser engraving device 70 and the visual inspection device 80 in sequence, so as to complete the printing, laser engraving and inspection operations of the workpiece 12; the unloading device 90 is installed at the end of the conveying device 20, and is used to unload the workpiece 12 after the operation is completed; the control system is respectively connected to and controls the operation of the conveying device 20, the loading device 40, the pad printing device 60, the laser engraving device 70, the visual inspection device 80 and the unloading device 90.

[0028] Specifically, the fully automatic pad printing and laser engraving detection equipment described in the present invention is mainly composed of an operating frame, a pad printing device 60, a laser engraving device 70, a visual detection device 80, a control system and an auxiliary device. The various devices are coordinated and linked through the control system to jointly complete the fully automated production process of pad printing, laser engraving and automatic detection. The control system is the control center of the entire equipment. It is preferably equipped with a computer intelligent control production system in the prior art, which is responsible for the coordination and linkage between the various systems. The control system receives feedback signals from corresponding sensors and equipment devices, and controls the automatic operation of each device at the same time. At the same time, the control system also has a fault self-diagnosis function, which can promptly issue an alarm when a fault occurs in the equipment, and prompt the cause and treatment method.

[0029] The present invention can mainly achieve the following beneficial effects: 1. Improve production efficiency: By integrating pad printing, laser engraving and automatic detection functions, an automated production process is achieved, manual intervention is reduced, and production efficiency is significantly improved.

[0030] 2. Reduce labor costs: The fully automated production process reduces manpower requirements and greatly reduces labor costs.

[0031] 3. Ensure product quality: The visual inspection device 80 can automatically perform machine vision algorithm inspection and judgment on the workpiece 12, and can promptly discover and handle quality problems to ensure the stability and consistency of product quality.

[0032] 4. Improve equipment stability: The laser engraving device 70 is also provided with a cooling system, and the control system also has a fault self-diagnosis function, which improves the stability and reliability of the equipment.

[0033] The specific working steps of the device are as follows 1. Equipment preparation: Check whether each device and system is in normal working condition, and ensure that the control system, pad printing device 60, laser engraving device 70, and visual inspection device 80 are operating normally without any faults.

[0034] 2. Product loading: Place the workpiece 12 to be processed at the position of the material box holder 41 specified by the equipment, so that the loading robot arm 43 can grab the workpiece 12 in the material box 13 and move it to the conveying base 26 on the conveying device 20, so that the conveying device 20 can move the workpiece 12 to the corresponding device in turn for pad printing, laser engraving and visual inspection.

[0035] 3. Pad printing operation: The control system starts the pad printing device 60, and the pad printing head 64 is driven by the control system to perform pad printing operation according to a preset pattern.

[0036] 4. Laser engraving operation: After the pad printing is completed, the control system starts the laser engraving device 70, and the laser generates a laser beam to perform laser engraving operation on the product surface.

[0037] 5. Automatic detection: After the laser engraving is completed, the control system starts the visual detection device 80, the visual sensor 82 takes pictures of the pad printing and laser engraving effects on the surface of the workpiece 12, and the image processing unit 83 detects and judges the captured images using the machine vision algorithm.

[0038] 6. Material collection: If the product quality is qualified, the control system sends the workpiece 12 product to the qualified product conveyor belt 96 for material collection. If the workpiece 12 product is unqualified, the defective product is moved and placed in the defective product storage box 97 to wait for subsequent unified processing.

[0039] In another embodiment, if Figure 2 and Figure 5 As shown, preferably, the conveying device 20 is provided with a conveying bracket 21, a conveying motor 22, a conveying belt 23, an active roller 24 and a driven roller 25, the conveying bracket 21 and the conveying motor 22 are respectively installed on the work table 10, the output shaft of the conveying motor 22 is drivingly connected to the active roller 24, the active roller 24 and the driven roller 25 are respectively rotatably connected to the conveying bracket 21, and the two ends of the conveying belt 23 are respectively sleeved on the active roller 24 and the driven roller 25, thereby forming a belt transmission system; a conveying base 26 is fixedly connected to the conveying belt 23 at a certain distance, and the conveying base 26 is used to place and convey the workpiece 12.

[0040] Specifically, the conveying base 26 is provided with a conveying groove, so that the workpiece 12 can be placed in the conveying groove, so that it is easy to be conveyed and clamped. The conveying bracket 21 is also provided with a first sensor 27 on one side of the starting end of the conveying device 20, and the first sensor 27 is electrically connected to the control system. The conveying base 26 is provided with a first sensor sheet 28 on one side corresponding to the first sensor 27, so that the first sensor 27 can sense the movement of the conveying base 26 and feedback to the control system, so that the control system automatically controls other devices according to the moving position of the conveying base 26. The conveying bracket 21 is also provided with a second sensor 29 on one side of the end of the conveying device 20, and the second sensor 29 is electrically connected to the control system, which is used to sense the workpiece 12 placed on the conveying base 26 at the end of the conveying device 20, and feedback the signal to the control system, so that the control system automatically operates the workpiece 12. The second sensor 29 is preferably a Panasonic CX-442 photoelectric sensor, so as to detect the conveying groove by emitting light to detect whether there is still a workpiece 12 inside the conveying groove.

[0041] like Figure 6 and Figure 8 As shown, preferably, a material moving device 30 is arranged above the conveying device 20, and the work table 10 is provided with a workpiece fixture 11, the workpiece fixture 11 is used to place the workpiece 12 to be processed, and the material moving device 30 is used to move the workpiece 12 from the conveying base 26 to the workpiece fixture 11; the material moving device 30 is provided with a first material moving bracket 31, a first material moving cylinder 32, a first material moving slide 33, a second material moving bracket 34, a second material moving cylinder 35, a second material moving slide 36, a finger cylinder 37 and a material moving finger 38, the first material moving bracket 31 is fixedly connected to the conveying bracket 21, the first material moving cylinder 32 and the first material moving slide 33 are respectively installed on the first material moving bracket 31, and the second material moving bracket 34 is installed on the It is installed on the slider end of the first material moving slide 33 and forms a transmission connection with the piston end of the first material moving cylinder 32, so that the first material moving cylinder 32 drives the second material moving bracket 34 to move linearly along the guide rail end of the first material moving slide 33; the second material moving cylinder 35 and the second material moving slide 36 are respectively installed on the second material moving bracket 34, and the finger cylinder 37 is installed on the slider end of the second material moving slide 36 and forms a transmission connection with the piston end of the second material moving cylinder 35, so that the second material moving cylinder 35 drives the finger cylinder 37 to move linearly along the guide rail end of the second material moving slide 36; the material moving finger 38 is installed on the piston end of the finger cylinder 37, so that the workpiece 12 is clamped under the operation of the finger cylinder 37.

[0042] Specifically, the material transfer device 30 and the workpiece fixture 11 are arranged in pairs at positions corresponding to the pad printing device 60, the laser engraving device 70 and the visual inspection device 80, so as to facilitate the corresponding devices to process the workpiece 12. The material transfer device 30 is also provided with a third material transfer cylinder 39, which is installed on the second material transfer bracket 34 to push the workpiece 12 placed on the workpiece fixture 11, so that the workpiece 12 is pushed to a preset position for operation.

[0043] like Figure 2 As shown, preferably, the loading device 40 is provided with a material box holder 41, an empty box holder 42 and a loading robot arm 43 respectively mounted on the work table 10, the material box holder 41 and the empty box holder 42 are respectively used for placing the material box 13 containing the workpiece 12 and the empty box for taking away the workpiece 12; the movable end of the loading robot arm 43 is provided with a gripper assembly, and the gripper assembly is used to grip the material box 13 or the workpiece 12, so that the loading robot arm 43 can move the material box 13 or the workpiece 12.

[0044] Specifically, the loading robot 43 preferably adopts a four-axis robot, and the gripper assembly is installed at the freely movable wrist of the robot, so that the robot can control the movement of the gripper assembly, so that the gripper assembly can remove the box cover or box body of the material box 13 from the material box holder 41 and place it on the empty box holder 42; it can also grab the workpiece 12 from the material box 13, move it to the conveying device 20, and place the workpiece 12 in the conveying groove of the conveying base 26 to complete the loading operation.

[0045] like Figure 3 As shown, preferably, the gripper assembly is provided with a gripper bracket 44 and a first gripper part 50, the gripper bracket 44 is mounted on the movable end of the loading robot arm 43; the first gripper part 50 is provided with a first cylinder 51, a first support plate 52 and a first suction cup 53, the first suction cup 53 is mounted on the first support plate 52, the first support plate 52 is fixedly connected to the piston end of the first cylinder 51, the first cylinder 51 is mounted on the upper part of the gripper bracket 44, and the gripper bracket 44 is provided with a first through hole corresponding to the position of the first suction cup 53, so that the first cylinder 51 can drive the first support plate 52 to move downward, so that the first suction cup 53 passes through the first through hole, and the box body or the box cover is adsorbed and grasped.

[0046] Specifically, in order to accurately and firmly absorb and grasp the box body or the box cover, it is preferred to install four first suction cups 53 at the four corners of the first support plate 52, so as to simultaneously absorb the box body or the box cover at four different positions. The first cylinder 51 is preferably installed on the upper part of the gripper bracket 44 through an adapter plate, because the lower part of the gripper bracket 44 needs to be installed with a second gripper portion 54 for sucking the workpiece 12, so it is also necessary to set a first through hole on the gripper bracket 44, so that the first suction cup 53 can pass through the first through hole and appear below the gripper bracket 44, thereby sucking the box body or the box cover.

[0047] like Figure 3 and Figure 4 As shown, preferably, the gripper assembly is provided with a gripper bracket 44 and a second gripper part 54, and the gripper bracket 44 is installed on the movable end of the loading robot arm 43; the second gripper part 54 is provided with a second support plate 55 and a second suction cup 56, and the second support plate 55 is installed on the gripper bracket 44, and the second suction cup 56 is installed on the second support plate 55, and the second suction cup 56 can adsorb and grasp the workpiece 12.

[0048] The gripper assembly is provided with two groups of second gripper parts 54, and the two groups of second gripper parts 54 are symmetrically installed on the gripper bracket 44, so as to simultaneously suck two workpieces 12; the second gripper part 54 is also provided with a gripper guide rail 57, a gripper slider 58 and a second cylinder 59, and the second cylinder 59 and the gripper guide rail 57 are respectively fixedly connected to the lower part of the gripper bracket 44, and the gripper slider 58 and the gripper guide rail 57 cooperate with each other to form a linear motion system, and the second support plate 55 is fixedly connected to the gripper slider 58 and forms a transmission connection with the piston end of the second cylinder 59, so that the second cylinder 59 is operated to drive the second support plate 55 and the gripper slider 58 to perform linear motion along the gripper guide rail 57.

[0049] Specifically, in order to reduce the movement of the loading robot arm 43 while needing to suck the workpieces 12 placed at different positions inside the box body, it is preferred to set a second cylinder 59 to move the second pallet 55 laterally, and in order to make the movement of the second pallet 55 more stable, it is preferred to set a gripper guide rail 57 and a gripper slider 58 to form a load-bearing linear motion system to stably move the second pallet 55 and the second suction cup 56 laterally.

[0050] In addition, in order to improve the operation efficiency of the entire device, it is preferred to grab two workpieces 12 at the same time and place them in two conveying bases 26 for corresponding conveying operations. Since the placement distance of two adjacent workpieces 12 inside the box body is relatively close, and the distance between two adjacent conveying bases 26 installed on the conveying device 20 is relatively far, after the two sets of second grippers 54 suck the two workpieces 12, when they need to be placed in two conveying bases 26 with relatively far distances, the second suction cups 56 of the corresponding two sets of second grippers 54 need to be moved accordingly, so a second cylinder 59 can be provided to move the second suction cups 56.

[0051] In order to reduce the impact of the gripper bracket 44 on the loading robot arm 43, it is preferred to keep the center of gravity of the gripper bracket 44 from shifting. Therefore, the two groups of second grippers 54 can be installed symmetrically, and the operation of the second cylinders 59 of the two groups of second grippers 54 can be controlled by the control system to make them operate synchronously, and the second suction cups 56 of the two groups of second grippers 54 can be moved synchronously, thereby ensuring that the center of gravity of the gripper bracket 44 remains stable.

[0052] For example, along the moving direction of the second suction cup 56, the grooves inside the box body where the workpiece 12 is placed can be numbered, and numbers 1 to 8 can be used. When the two second suction cups 56 of the two groups of second grippers 54 are sucking, it is preferred to suck at certain intervals. For example, the second suction cups 56 of one group of second grippers 54 suck the workpiece 12 in the groove numbered 1, and the second suction cups 56 of the other group of second grippers 54 suck the workpiece 12 in the groove numbered 5. In the next sucking step, one groove is moved horizontally at the same time, that is, one group sucks the workpiece 12 in the groove numbered 2, and the other group sucks the workpiece 12 in the groove numbered 6. And so on, until the sucking operation of the workpieces 12 in the entire numbered grooves is completed.

[0053] Secondly, after the two groups of second grippers 54 simultaneously absorb the two workpieces 12, the loading robot arm 43 can move accordingly to move the gripper bracket 44 to the top of the conveying device 20. At the same time, the second cylinders 59 of the two groups of second grippers 54 operate synchronously to move the two absorbed workpieces 12 to both sides, thereby increasing the distance between the two workpieces 12 to match the distance between the two groups of conveying bases 26 on the conveying device 20, so that the gripper bracket 44 can place the two workpieces 12 into the two groups of conveying bases 26 at the same time.

[0054] like Figure 7As shown, preferably, the pad printing device 60 is provided with a pad printing support 61, a pad printing template 63, a pad printing head 64, an ink supply system and a cleaning system, the pad printing support 61 is also provided with a moving mechanism 62, the pad printing head 64 is installed at the driving end of the moving mechanism 62, so that under the drive of the moving mechanism 62, the preset pattern on the pad printing template 63 is transferred to the surface of the workpiece 12; the ink supply system is used to supply the required ink to the pad printing head 64 and the pad printing template 63, and the cleaning system is used to clean the pad printing head 64 and the pad printing template 63.

[0055] Specifically, the ink supply device is respectively connected to the pad printing template and the cleaning setting, so that the pad printing template can be customized according to the preset pattern. The pad printing head 64 takes out the required ink from the ink supply device under the drive of the control system, and accurately transfers the preset pattern to the surface of the workpiece 12 product. Then the cleaning system can clean the pad printing head 64 and the pad printing template 63 after the pad printing is completed to ensure the cleanliness of the next pad printing.

[0056] like Figure 5 As shown, preferably, the laser engraving device 70 is provided with a laser engraving bracket 71, a laser engraving linear module 72 and a laser engraving mechanism 73, the laser engraving bracket 71 is installed on the workbench 10, the laser engraving linear module 72 is installed on the laser engraving bracket 71, and the laser engraving mechanism 73 is installed on the driving end of the laser engraving linear module 72, thereby driving the laser engraving mechanism 73 to move up and down a certain distance, and under the control of the control system, perform automated laser engraving operations on the workpiece 12.

[0057] Specifically, the laser engraving mechanism 73 includes a laser emitter, a focusing lens group, a scanning galvanometer and a cooling system. The laser emitter generates a high-energy laser beam, which is focused by the focusing lens group and then guided by the scanning galvanometer to the surface of the workpiece 12 for laser engraving. The cooling system is used to dissipate heat from the laser emitter to ensure that the laser emitter can work stably for a long time.

[0058] like Figure 8 As shown, preferably, the visual inspection device 80 is provided with an inspection bracket 81, a visual sensor 82 and an image processing unit 83, the inspection bracket 81 is installed on the work table 10, the visual sensor 82 and the image processing unit 83 are respectively installed on the inspection bracket 81, the visual sensor 82 takes images of the pad printing and laser engraving effects on the surface of the workpiece 12, and the image processing unit 83 processes the taken images using a machine vision algorithm, so as to identify and determine whether the quality of the pad printing and laser engraving meets the production requirements.

[0059] Specifically, the machine vision algorithm is a machine recognition algorithm that performs intelligent calculations on images. It can intelligently distinguish and compare the details of the captured image, so that it can compare the effects of the pad-printed pattern and the laser-engraved pattern, thereby identifying unqualified workpieces 12 products, and can provide feedback to the control system and send corresponding unqualified signals, so that the control system can control the unloading device 90 to place the corresponding unqualified workpieces 12 in the unqualified area, waiting for subsequent processing by the staff.

[0060] like Fig. 9 As shown, preferably, the unloading device 90 is provided with an unloading bracket 91, an unloading linear module 93, an unloading cylinder 94 and an unloading suction cup 95, the unloading bracket 91 is installed on the work table 10, the unloading linear module 93 is installed on the unloading bracket 91, the unloading cylinder 94 is installed on the driving end of the unloading linear module 93, and the unloading suction cup 95 is installed on the piston end of the unloading cylinder 94.

[0061] Specifically, the unloading suction cup 95 can be driven by the unloading cylinder 94 to move up and down to suck the workpiece 12, and then driven by the unloading linear module 93 to move horizontally to place the qualified workpiece 12 on the qualified product conveyor belt 96 to enter the next station for further operation or to place the defective product in the defective product storage box 97 to wait for the worker to process it.

[0062] In order to suck two workpieces 12 at the same time, a material unloading support plate 92 can also be set up, and the material unloading support plate 92 can be installed on the piston end of the material unloading cylinder 94, and two groups of material unloading suction cups 95 can be set at a certain distance from the material unloading support plate 92, and the certain distance can be set to the distance between the two conveying bases 26, so that the two groups of material unloading suction cups 95 can suck the two workpieces 12 on the two conveying bases 26 at the same time.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A fully automatic pad printing laser engraving detection device using machine vision algorithm, characterized in that: The invention comprises a work table (10), a conveying device (20), a loading device (40), a pad printing device (60), a laser engraving device (70), a visual inspection device (80), a loading device (90) and a control system, wherein the conveying device (20) is mounted on the work table (10), and the pad printing device (60), the laser engraving device (70) and the visual inspection device (80) are sequentially mounted along the conveying direction of the conveying device (20); the loading device (40) is mounted at the starting end of the conveying device (20) and is used to load a workpiece (12) and place the workpiece (12) on the conveying device. The device (20) allows the workpiece (12) to pass through the pad printing device (60), the laser engraving device (70) and the visual inspection device (80) in sequence, thereby completing the printing, laser engraving and inspection operations of the workpiece (12); the unloading device (90) is installed at the end of the conveying device (20) and is used to unload the workpiece (12) after the operation is completed; the control system is respectively connected to the conveying device (20), the loading device (40), the pad printing device (60), the laser engraving device (70), the visual inspection device (80) and the unloading device (90), thereby controlling the equipment to operate automatically.

2. The fully automatic pad printing laser engraving detection equipment using machine vision algorithm according to claim 1 is characterized in that: The conveying device (20) is provided with a conveying support (21), a conveying motor (22), a conveying belt (23), a driving roller (24) and a driven roller (25); the conveying support (21) and the conveying motor (22) are respectively mounted on a work table (10); the output shaft of the conveying motor (22) is drivingly connected to the driving roller (24); the driving roller (24) and the driven roller (25) are respectively rotatably connected to the conveying support (21); the two ends of the conveying belt (23) are respectively sleeved on the driving roller (24) and the driven roller (25), thereby forming a belt conveying system; a conveying base (26) is fixedly connected to the conveying belt (23) at a certain distance; the conveying base (26) is used to place and convey the workpiece (12).

3. The fully automatic pad printing laser engraving detection equipment using machine vision algorithm according to claim 2 is characterized in that: A material moving device (30) is arranged above the conveying device (20); the work table (10) is provided with a workpiece fixture (11); the workpiece fixture (11) is used to place a workpiece (12) to be processed; the material moving device (30) is used to move the workpiece (12) from the conveying base (26) to the workpiece fixture (11); the material moving device (30) is provided with a first material moving bracket (31), a first material moving cylinder (32), a first material moving slide (33), a second material moving bracket (34), a second material moving cylinder (35), a second material moving slide (36), a finger cylinder (37) and a material moving finger (38); the first material moving bracket (31) is fixedly connected to the conveying bracket ( 21), the first material moving cylinder (32) and the first material moving slide (33) are respectively mounted on the first material moving bracket (31), the second material moving bracket (34) is mounted on the slider end of the first material moving slide (33), and forms a transmission connection with the piston end of the first material moving cylinder (32); the second material moving cylinder (35) and the second material moving slide (36) are respectively mounted on the second material moving bracket (34), the finger cylinder (37) is mounted on the slider end of the second material moving slide (36), and forms a transmission connection with the piston end of the second material moving cylinder (35); the material moving finger (38) is mounted on the piston end of the finger cylinder (37) to perform a clamping operation on the workpiece (12).

4. The fully automatic pad printing laser engraving detection device using machine vision algorithm according to claim 1 is characterized in that: The loading device (40) is provided with a material box support (41), an empty box support (42) and a loading robot arm (43) respectively mounted on the working table (10); the material box support (41) and the empty box support (42) are respectively used to place a material box (13) containing a workpiece (12) and an empty box for taking away the workpiece (12); a gripper assembly is provided at the movable end of the loading robot arm (43); the gripper assembly is used to grip the material box (13) or the workpiece (12), so that the loading robot arm (43) can move the material box (13) or the workpiece (12).

5. The fully automatic pad printing laser engraving detection equipment using machine vision algorithm according to claim 4 is characterized in that: The gripper assembly is provided with a gripper bracket (44) and a first gripper part (50), wherein the gripper bracket (44) is mounted on the movable end of the loading robot arm (43); the first gripper part (50) is provided with a first cylinder (51), a first support plate (52) and a first suction cup (53), wherein the first suction cup (53) is mounted on the first support plate (52), the first support plate (52) is fixedly connected to the piston end of the first cylinder (51), the first cylinder (51) is mounted on the upper part of the gripper bracket (44), and the gripper bracket (44) is provided with a first through hole at a position corresponding to the first suction cup (53), so that the first cylinder (51) can drive the first support plate (52) to move downward, so that the first suction cup (53) passes through the first through hole, and the box body or the box cover is sucked and grasped.

6. The fully automatic pad printing laser engraving detection device using machine vision algorithm according to claim 4 is characterized in that: The gripper assembly is provided with a gripper bracket (44) and a second gripper portion (54), wherein the gripper bracket (44) is mounted on the movable end of the loading robot arm (43); the second gripper portion (54) is provided with a second support plate (55) and a second suction cup (56), wherein the second support plate (55) is mounted on the gripper bracket (44), and the second suction cup (56) is mounted on the second support plate (55), and can absorb and grasp the workpiece (12).

7. The fully automatic pad printing laser engraving detection device using machine vision algorithm according to claim 6 is characterized in that: The gripper assembly is provided with two groups of second gripper parts (54), and the two groups of second gripper parts (54) are symmetrically mounted on the gripper bracket (44) respectively, so as to suck two workpieces (12) simultaneously; the second gripper part (54) is also provided with a gripper guide rail (57), a gripper slider (58) and a second cylinder (59), and the second cylinder (59) and the gripper guide rail (57) are respectively fixed to the lower part of the gripper bracket (44), and the gripper slider (58) and the gripper guide rail (57) cooperate with each other to form a linear motion system, and the second support plate (55) is fixed to the gripper slider (58) and forms a transmission connection with the piston end of the second cylinder (59), so that the second cylinder (59) operates to drive the second support plate (55) and the second suction cup (56) to perform linear motion along the gripper guide rail (57).

8. The fully automatic pad printing laser engraving detection device using machine vision algorithm according to claim 1 is characterized in that: The pad printing device (60) is provided with a pad printing support (61), a moving mechanism (62), a pad printing template (63), a pad printing head (64), an ink supply system and a cleaning system. The pad printing head (64) is mounted on a driving end of the moving mechanism (62), so that under the drive of the moving mechanism (62), a preset pattern on the pad printing template (63) is transferred to the surface of the workpiece (12); the ink supply system is used to supply the required ink to the pad printing head (64) and the pad printing template (63), and the cleaning system is used to clean the pad printing head (64) and the pad printing template (63).

9. The fully automatic pad printing laser engraving detection device using machine vision algorithm according to claim 1 is characterized in that: The laser engraving device (70) is provided with a laser engraving bracket (71), a laser engraving linear module (72) and a laser engraving mechanism (73); the laser engraving bracket (71) is mounted on a work table (10); the laser engraving linear module (72) is mounted on the laser engraving bracket (71); and the laser engraving mechanism (73) is mounted on a driving end of the laser engraving linear module (72), thereby driving the laser engraving mechanism (73) to move up and down a certain distance, and under the control of a control system, an automated laser engraving operation is performed on a workpiece (12).

10. The fully automatic pad printing laser engraving detection equipment using machine vision algorithm according to claim 1, characterized in that: The visual inspection device (80) is provided with a detection bracket (81), a visual sensor (82) and an image processing unit (83); the detection bracket (81) is mounted on a work table (10); the visual sensor (82) and the image processing unit (83) are respectively mounted on the detection bracket (81); the visual sensor (82) captures images of pad printing and laser engraving effects on the surface of a workpiece (12); and the image processing unit (83) processes the captured images using a machine vision algorithm, thereby identifying and judging whether the quality of pad printing and laser engraving meets production requirements.

Images