A high-efficiency laser marking machine

Abstract

The present invention relates to a high-efficiency laser engraving marking machine applied to the field of laser processing. This solution utilizes the mutual cooperation of a loader, a manipulator, a tray pusher, a laser engraving loading and unloading machine, a laser engraving module, a re-inspection module and a feeder to realize automatic loading and unloading and detection, effectively improving production efficiency, and utilizing a suction nozzle assembly to grasp workpieces in batches, effectively improving the efficiency of loading and unloading. In addition, the negative pressure effect during vacuum adsorption is utilized to allow a conductive diaphragm to adhere to an electrode, thereby changing the current of the electrode, and by monitoring the change in the electrode current, it is determined whether the vacuum suction nozzle is firmly adsorbed, effectively reminding the staff to eliminate the fault in time, thereby effectively avoiding reducing the efficiency of the suction nozzle assembly in grasping the workpiece.

Description

Technical Field

[0001] The present invention relates to a high-efficiency laser engraving marking machine, in particular to a high-efficiency laser engraving marking machine applied to the field of laser processing. Background Art

[0002] Laser engraving machines use laser beams to create permanent marks on the surface of a material or inside a transparent material. Currently, most laser engraving machines on the market cannot automatically load and unload materials, which seriously affects production efficiency.

[0003] In order to solve the problem of automatic loading and unloading, a certain laser engraving machine on the market adopts the design of automatic loading and detection, which has a certain market share.

[0004] The specification of Chinese patent CN201711002122.4 discloses a laser engraving inspection machine, which includes a chassis and a feeding device, a laser device and a detection device arranged on the chassis. The laser device and the detection device are arranged above the feeding device, and are respectively used to perform laser marking and detection on the workpiece. The feeding device includes a vibrating disk, a feeding plate, a feeding drive, a feeding paddle and a discharge drive. The feeding plate is recessed with a feeding channel connected to the vibrating disk, and the end of the feeding plate away from the vibrating disk is provided with a discharge port. The feeding drive is installed on the chassis and connected to the feeding paddle. The feeding paddle includes a paddle claw, which slides in the feeding channel under the drive of the feeding drive. The discharge drive is arranged at the discharge port, and the discharge drive is used to push the workpiece that fails the inspection into the discharge port.

[0005] Although the existing laser engraving machines can realize automatic loading and unloading and can detect workpieces, when the robot moves the workpiece, due to the defects on the surface of the workpiece and the defects of the vacuum nozzle, when the robot grabs multiple workpieces at one time, once a workpiece is not grabbed, the vacuum nozzle here will affect the vacuum degree of all vacuum nozzles, thereby affecting loading and unloading, and further affecting the efficiency of laser engraving. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to achieve efficient automatic loading and unloading.

[0007] In order to solve the above problems, the present invention provides a high-efficiency laser engraving marking machine, which includes a chassis, a loader is installed inside the chassis, and a manipulator is installed on one side of the loader, a tray pusher is installed on the side of the manipulator close to the loader, and a laser engraving loading and unloading machine is installed on the side of the tray pusher away from the loader, a laser engraving module is installed on the side of the laser engraving loading and unloading machine close to the manipulator, and a lifting module is installed below the laser engraving module, a re-inspection module is installed on the chassis near the discharge port of the laser engraving loading and unloading machine, and a blanking machine is installed below the re-inspection module;

[0008] The feeding machine includes a vibrating plate, and a straight vibrator is installed at the discharge port of the vibrating plate, and the discharge end of the straight vibrator is installed with two screw modules 1 distributed side by side, and the two screw modules 1 are each equipped with a multi-point receiving plate, and the two multi-point receiving plates are each provided with a plurality of receiving holes, the manipulator includes a base, a mechanical arm is installed on the base, and the output end of the mechanical arm is connected with a suction nozzle assembly, the material tray pusher includes a bracket, and the upper part of the bracket is fixedly connected with a guide rail, one end of the guide rail is fixedly connected with a magazine bin, and a plurality of stacked material trays are placed in the magazine bin, a rodless cylinder is installed inside the bracket, and a pushing assembly connected to the output end of the rodless cylinder is slidably connected above the bracket, and positioning cylinders are installed on both side walls of the guide rail away from the magazine bin, and a stopper is also fixedly connected to the side wall port of the guide rail close to the positioning cylinder;

[0009] The laser engraving loading and unloading machine includes a screw module 2, and the output end of the screw module 2 is connected to a mounting frame, a telescopic cylinder is installed on the mounting frame, and a hanger connected to the output end of the telescopic cylinder is slidably connected to the mounting frame, and a plurality of equally spaced brackets are fixedly connected to the side wall of the hanger, and a cylinder clamp is installed at the lower end of each bracket. The laser engraving module includes a plurality of symmetrically distributed pillars, and a lifting adjustment screw pair is installed inside each pillar. The side wall of the pillar is slidably connected to the laser engraving machine body connected to the output end of the lifting adjustment screw pair. The lifting module includes a screw module 3, and a lifting plate is connected to the output end of the screw module 3. The lifting plate is located below the cylinder clamp.

[0010] The re-inspection module includes a gantry, and a screw module four is installed above the gantry, the output end of the screw module four is connected to a slide, and the slide is installed with a re-inspection camera and a defective product collection clamp placed side by side, the screw module five is installed below the gantry, and the output end of the screw module five is connected to a carrier seat matching the material tray, a blanking clamp is also installed above the screw module four, and the blanking machine is located on one side of the blanking clamp.

[0011] In the above-mentioned high-efficiency laser engraving marking machine, the workpiece is grasped by a nozzle assembly. If one vacuum nozzle fails to adsorb into place, it will not affect the vacuum degree of other nozzles, thereby effectively improving the efficiency of loading and unloading.

[0012] As a further improvement of the present application, the suction nozzle assembly includes a plurality of vacuum suction nozzles distributed at equal intervals, a vacuum suction hole is opened on the inner wall of the middle of the vacuum suction hole, and the inner walls on both sides of the vacuum suction hole are connected with a slide groove, and the connection between the slide groove and the vacuum suction hole is fixedly connected with an elastic membrane, a connecting air channel is opened on the inner wall of the vacuum suction nozzle, and the slide groove is connected to the external air through the connecting air channel, the inner wall of the slide groove is slidably connected with a slide plate, and a plurality of symmetrically distributed elastic reset belts are fixedly connected between the side wall of the slide plate and the inner wall of the slide groove, the side wall of the slide plate facing the elastic membrane is fixedly connected with a conductive diaphragm, and the inner wall of the slide groove near the elastic membrane is fixedly connected with an electrode matching the conductive diaphragm, the side wall of the slide plate facing the electrode is also fixedly connected with a bracket penetrating the electrode, and the end of the bracket away from the slide plate is fixedly connected with a push head attached to the elastic membrane, a current measuring module electrically connected to the electrode is installed above the vacuum suction nozzle, and a current measuring module is installed on the upper side wall of the vacuum suction nozzle The alarm light of the electrical connection of the measuring module, multiple vacuum nozzles suck the workpiece at the same time, and each vacuum nozzle is tested during the suction process. When the vacuum nozzle sucks the workpiece firmly, the vacuum suction hole is under negative pressure. Since the connecting airway makes the slide plate connected to the external environment, the atmospheric pressure causes the slide plate to drive the conductive diaphragm to press on the electrode. Since the conductive diaphragm has a certain resistance, the contact of the conductive diaphragm makes the current at both ends of the electrode smaller. Once the current measurement module detects that the current of the electrode is smaller, it means that the vacuum nozzle has adsorbed the workpiece. After the vacuum nozzle fails to suck the workpiece firmly, the inside of the vacuum suction hole is a normal atmospheric pressure environment. At this time, the conductive diaphragm is not in contact with the electrode, nor does it change the current of the electrode. The current measurement module triggers the alarm light after detecting that the current of the electrode has not changed, reminding the maintenance personnel to immediately inspect the vacuum nozzle here to avoid affecting the loading and unloading process.

[0013] As a further improvement of the present application, the current measurement module includes a current monitoring module and an alarm module, and the alarm module is electrically connected to the alarm light through the control processor. The current monitoring module monitors the current at both ends of the electrode in real time. If the current of the electrode does not change before and after sucking the workpiece, it indicates that there is a fault in the vacuum nozzle here. Then the alarm module triggers the alarm light to sound an alarm, allowing workers to eliminate the fault in time to avoid affecting the efficiency of loading and unloading.

[0014] As a further improvement of the present application, the skateboard is made of insulating material and the conductive diaphragm is made of flexible conductive material. In order to avoid leakage of the skateboard and affect the monitoring of the electrode current, the skateboard is made of insulating material. The conductive diaphragm itself can conduct electricity, but it also has a certain resistance. The conductive diaphragm relies on contact with the electrode to increase the resistance of the electrode, thereby changing the current of the electrode, so that the current monitoring module can monitor the changes in the electrode current.

[0015] As another improvement of the present application, the elastic membrane is made of elastic material, and a wear-resistant layer is bonded to the inner surface of the elastic membrane. When the vacuum nozzle adsorbs the workpiece, the inside of the vacuum hole is a vacuum environment. At this time, the two elastic membranes also approach each other under the action of negative pressure, which can compress the internal space of the vacuum hole, thereby further effectively increasing the vacuum adsorption force of the vacuum nozzle.

[0016] As another improvement of the present application, a limiting wire is fixedly connected between the side wall of the slide and the inner wall of the slide groove, and the length of the limiting wire is less than the maximum extension distance of the elastic reset belt. Under the action of negative pressure, the conductive diaphragm will be tightly pressed on the electrode, and the push head will also push the elastic membrane. Therefore, in order to protect the electrode and the elastic membrane, a limiting wire is used for restraint.

[0017] To sum up, this solution utilizes the mutual cooperation of a loader, a manipulator, a tray pusher, a laser engraving loading and unloading machine, a laser engraving module, a re-inspection module and a feeder to realize automatic loading and unloading and detection, effectively improving production efficiency, and utilizing a nozzle assembly to grab workpieces in batches, effectively improving the efficiency of loading and unloading. In addition, the negative pressure effect during vacuum adsorption is utilized to allow the conductive diaphragm to stick to the electrode, thereby changing the current of the electrode, and by monitoring the change in the electrode current, it is determined whether the vacuum nozzle is firmly adsorbed, effectively reminding the staff to troubleshoot in a timely manner, thereby effectively avoiding reducing the efficiency of the nozzle assembly in grabbing the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the chassis of the first embodiment of the present application;

[0019] Figure 2 This is an overall three-dimensional diagram of the first embodiment of the present application;

[0020] Figure 3 This is a three-dimensional diagram of a loader according to the first embodiment of the present application;

[0021] Figure 4 This is a three-dimensional diagram of the robot arm according to the first embodiment of the present application;

[0022] Figure 5 This is a three-dimensional diagram of the tray pusher according to the first embodiment of the present application;

[0023] Figure 6 This is a three-dimensional diagram of the laser engraving loading and unloading machine according to the first embodiment of the present application;

[0024] Figure 7 This is a three-dimensional diagram of the laser engraving module according to the first embodiment of the present application;

[0025] Figure 8 This is a three-dimensional diagram of the re-inspection module according to the first embodiment of the present application;

[0026] Figure 9This is a three-dimensional diagram of the nozzle assembly of the first embodiment of the present application;

[0027] Figure 10 This is a front view of the nozzle assembly of the second embodiment of the present application;

[0028] Figure 11 for Figure 10 Enlarged view of point A in the middle;

[0029] Figure 12 for Figure 10 Enlarged view of point B in the middle.

[0030] Description of the numbers in the figure:

[0031] 1 Chassis, 2 Loader, 201 Vibration Plate, 202 Straight Vibrator, 203 Screw Module 1, 204 Multi-point Receiving Plate, 3 Robot, 301 Base, 302 Robot Arm, 303 Nozzle Assembly, 3031 Vacuum Nozzle, 4 Tray Pusher, 401 Bracket, 402 Guide Rail, 403 Magazine Bin, 404 Tray, 405 Rodless Cylinder, 406 Pusher Assembly, 407 Positioning Cylinder, 408 Stopper, 5 Laser Engraving Loader, 501 Screw Module 2, 502 Mounting Bracket, 503 Telescopic Cylinder, 504 Hanger, 505 Bracket, 506 Cylinder gripper, 6 laser engraving modules, 601 pillar, 602 laser engraving machine body, 603 lifting adjustment screw pair, 7 lifting module, 701 screw module three, 702 lifting plate, 8 re-inspection module, 801 gantry, 802 screw module four, 803 slide plate, 804 re-inspection camera, 805 defective product collection gripper, 806 screw module five, 9 blanking machine, 10 vacuum suction hole, 11 slide, 12 elastic membrane, 13 connecting airway, 14 slide plate, 15 elastic reset belt, 16 conductive diaphragm, 17 electrode, 18 push head, 19 alarm light, 20 limit wire. DETAILED DESCRIPTION

[0032] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0033] The first implementation method:

[0034] Figure 1 、 2 As shown, it includes a chassis 1, a loader 2 is installed inside the chassis 1, and a manipulator 3 is installed on one side of the loader 2, a tray pusher 4 is installed on the side of the manipulator 3 close to the loader 2, and a laser engraving loading and unloading machine 5 is installed on the side of the tray pusher 4 away from the loader 2, a laser engraving module 6 is installed on the side of the laser engraving loading and unloading machine 5 close to the manipulator 3, and a lifting module 7 is installed below the laser engraving module 6, a re-inspection module 8 is installed on the chassis 1 near the discharge port of the laser engraving loading and unloading machine 5, and a blanking machine 9 is installed below the re-inspection module 8;

[0035] Figure 3 、 4 and Figure 5 As shown, the feeder 2 includes a vibrating plate 201, and a straight vibrator 202 is installed at the discharge port of the vibrating plate 201, and two screw modules 203 distributed side by side are installed at the discharge end of the straight vibrator 202, and the two screw modules 203 are both equipped with a multi-point receiving tray 204, and the two multi-point receiving trays 204 are both provided with multiple receiving holes, the manipulator 3 includes a base 301, a mechanical arm 302 is installed on the base 301, and the output end of the mechanical arm 302 is connected to the nozzle assembly 303, the tray pusher 4 includes a bracket 401, and the upper part of the bracket 401 is fixedly connected to Guide rail 402, one end of which is fixedly connected to a magazine bin 403, and a plurality of stacked material trays 404 are placed in the magazine bin 403, a rodless cylinder 405 is installed inside the bracket 401, and a pusher assembly 406 connected to the output end of the rodless cylinder 405 is slidably connected above the bracket 401, and positioning cylinders 407 are installed on both side walls of the end of the guide rail 402 away from the magazine bin 403 (the specific model is selected according to actual needs and is not described in detail here), and a stopper 408 is also fixedly connected to the side wall port of the guide rail 402 near the positioning cylinder 407;

[0036] Figure 6 、 7 As shown, the laser engraving loading and unloading machine 5 includes a screw module 2 501, and the output end of the screw module 2 501 is connected to a mounting frame 502, a telescopic cylinder 503 is installed on the mounting frame 502 (the specific model is selected according to actual needs and is not described in detail here), and a hanger 504 connected to the output end of the telescopic cylinder 503 is slidably connected to the mounting frame 502, and a plurality of equally spaced brackets 505 are fixedly connected to the side wall of the hanger 504, and a cylinder clamp 506 is installed at the lower end of each bracket 505, and the laser engraving module 6 includes a plurality of symmetrically distributed pillars 601, and a lifting adjustment screw pair 603 is installed inside each pillar 601, and the side wall of the pillar 601 is slidably connected to the laser engraving machine body 602 connected to the output end of the lifting adjustment screw pair 603, and the lifting module 7 includes a screw module 3 701, and a lifting plate 702 is connected to the output end of the screw module 3 701, and the lifting plate 702 is located below the cylinder clamp 506;

[0037] Figure 8It is shown that the re-inspection module 8 includes a gantry 801, and a screw module four 802 is installed above the gantry 801, the output end of the screw module four 802 is connected to a slide 803, and the slide 803 is installed with a re-inspection camera 804 and a defective product collection clamp 805 placed side by side, a screw module five 806 is installed below the gantry 801, and the output end of the screw module five 806 is connected to a carrier seat matching the material tray 404, a blanking clamp is also installed above the screw module four 802, and the blanking machine 9 is located on one side of the blanking clamp.

[0038] The second implementation method:

[0039] Figure 9 、 10 As shown, the nozzle assembly 303 includes a plurality of vacuum nozzles 3031 distributed at equal intervals. A vacuum suction hole 10 is opened on the inner wall of the central part of the vacuum suction hole 10. The inner walls on both sides of the vacuum suction hole 10 are connected with a slide groove 11, and the connection between the slide groove 11 and the vacuum suction hole 10 is fixedly connected with an elastic membrane 12. The elastic membrane 12 is made of elastic material (preferably polyurethane elastic material, and other materials can also be selected according to actual needs), and the inner surface of the elastic membrane 12 is bonded with a wear-resistant layer. When the vacuum suction nozzle 3031 adsorbs the workpiece, the interior of the vacuum suction hole 10 is a vacuum environment. At this time, the two elastic membranes 12 also move closer to each other under the action of negative pressure, which can compress the internal space of the vacuum suction hole 10, thereby further effectively increasing the vacuum suction force of the vacuum suction nozzle 3031. A connecting air channel 13 is opened on the inner wall of the vacuum suction nozzle 3031, and the slide groove 11 is connected to the external air through the connecting air channel 13.

[0040] Figure 11 、 12 As shown, the inner wall of the chute 11 is slidably connected with a slide plate 14, which is made of an insulating material, and the conductive diaphragm 16 is made of a flexible conductive material (polymer material is preferred, and other materials can also be selected according to actual needs). In order to prevent the slide plate 14 from leaking and affecting the monitoring of the current of the electrode 17, the slide plate 14 is made of an insulating material. The conductive diaphragm 16 itself can conduct electricity, but it also has a certain resistance. The conductive diaphragm 16 relies on contact with the electrode 17 to increase the resistance of the electrode 17, thereby changing the current of the electrode 17, so that the current monitoring module can monitor the change of the current of the electrode 17. A limit wire 20 is also fixedly connected between the side wall of the slide plate 14 and the inner wall of the chute 11, and the length of the limit wire 20 is less than the maximum extension distance of the elastic reset belt 15. Under the action of negative pressure, the conductive diaphragm 16 will be pressed tightly against the electrode 17, and the push head 18 will also push the elastic film 12. Therefore, in order to protect the electrode 17 and the elastic film 12, a limit wire 20 is used for restraint;

[0041] Figure 11 、 12As shown, a plurality of symmetrically distributed elastic reset belts 15 are fixedly connected between the side wall of the slide 14 and the inner wall of the slide 11, a conductive diaphragm 16 is fixedly connected to the side wall of the slide 14 facing the elastic membrane 12, and an electrode 17 matching the conductive diaphragm 16 is fixedly connected to the inner wall of the slide 11 near the elastic membrane 12 (its specific connection structure and working principle refer to the sliding rheostat in the prior art), the side wall of the slide 14 facing the electrode 17 is also fixedly connected to a bracket passing through the electrode 17, and the end of the bracket away from the slide 14 is fixedly connected to a push head 18 in contact with the elastic membrane 12, and the vacuum A current measuring module electrically connected to the electrode 17 is installed above the suction nozzle 3031, and an alarm light 19 electrically connected to the current measuring module is installed on the upper side wall of the vacuum suction nozzle 3031. The current measuring module includes a current monitoring module and an alarm module, and the alarm module is electrically connected to the alarm light 19 through a control processor (the specific connection structure and working principle are well-known technologies for technicians in the relevant field and will not be described in detail here). The current monitoring module monitors the current at both ends of the electrode 17 in real time. If the current of the electrode 17 does not change before and after sucking the workpiece, it indicates that the vacuum suction nozzle 3031 here has a problem. If a fault occurs, the alarm module triggers the alarm light 19 to sound an alarm, allowing workers to eliminate the fault in time to avoid affecting the efficiency of loading and unloading. Multiple vacuum nozzles 3031 suck the workpiece at the same time, and each vacuum nozzle 3031 is tested during the suction process. When the vacuum nozzle 3031 sucks the workpiece firmly, the vacuum suction hole 10 is under negative pressure. Since the air channel 13 connects the slide plate 14 with the external environment, the atmospheric pressure causes the slide plate 14 to drive the conductive diaphragm 16 to press on the electrode 17. Since the conductive diaphragm 16 has a certain resistance, the conductive diaphragm 1 6 is in contact with each other, so that the current at both ends of the electrode 17 becomes smaller. Once the current measuring module detects that the current of the electrode 17 becomes smaller, it means that the vacuum suction nozzle 3031 has adsorbed the workpiece. After the vacuum suction nozzle 3031 fails to firmly absorb the workpiece, the inside of the vacuum suction hole 10 is a normal atmospheric pressure environment. At this time, the conductive diaphragm 16 is not in contact with the electrode 17, and the current of the electrode 17 is not changed. Then, when the current measuring module detects that the current of the electrode 17 has not changed, it triggers the alarm light 19, reminding the maintenance personnel to immediately inspect the vacuum suction nozzle 3031 here to avoid affecting the loading and unloading process.

[0042] The working principle of this solution is as follows: the vibration plate 201 and the straight vibrator 202 cooperate with each other to place the workpiece on the multi-point receiving tray 204, the nozzle assembly 303 grabs the workpiece on the multi-point receiving tray 204 and puts it on the tray 404, then the cylinder clamp 506 grabs the tray 404 and puts it on the lifting plate 702, and the lifting plate 702 then transports the tray 404 to the bottom of the laser engraving machine body 602 for laser engraving marking. After the marking is completed, the tray 404 is transported to the bottom of the re-inspection camera 804 for re-inspection. The unqualified workpieces are picked up by the defective product collecting claws 805, and the qualified products are transported out by the unloader 9. In the process of the nozzle assembly 303 grabbing the workpiece, the current monitoring module monitors the current at both ends of the electrode 17 in real time. If the current of the electrode 17 does not change before and after sucking the workpiece, it indicates that the vacuum nozzle 3031 here has a fault. Then the alarm module triggers the alarm light 19 to sound an alarm, allowing workers to eliminate the fault in time to avoid affecting the efficiency of loading and unloading. Multiple vacuum nozzles 3031 At the same time, the workpiece is sucked in, and each vacuum suction nozzle 3031 is tested during the suction process. When the vacuum suction nozzle 3031 sucks the workpiece firmly, the vacuum suction hole 10 is under negative pressure. Since the connecting air channel 13 connects the slide plate 14 with the external environment, the atmospheric pressure causes the slide plate 14 to drive the conductive diaphragm 16 to press on the electrode 17. Since the conductive diaphragm 16 has a certain resistance, the contact of the conductive diaphragm 16 causes the current at both ends of the electrode 17 to decrease. Once the current measurement module detects that the current of the electrode 17 decreases, it means that the vacuum suction nozzle 3031 has sucked the workpiece. After the vacuum suction nozzle 3031 fails to suck the workpiece firmly, the inside of the vacuum suction hole 10 is a normal atmospheric pressure environment. At this time, the conductive diaphragm 16 is not in contact with the electrode 17 and does not change the current of the electrode 17. When the current measurement module detects that the current of the electrode 17 has not changed, it triggers the alarm light 19, reminding the maintenance personnel to immediately inspect the vacuum suction nozzle 3031 here to avoid affecting the loading and unloading process.

[0043] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A high-efficiency laser engraving marking machine, characterized by: It includes a chassis, a loader is installed inside the chassis, and a manipulator is installed on one side of the loader, a tray pusher is installed on the side of the manipulator close to the loader, and a laser engraving loading and unloading machine is installed on the side of the tray pusher away from the loader, a laser engraving module is installed on the side of the laser engraving loading and unloading machine close to the manipulator, and a lifting module is installed below the laser engraving module, a re-inspection module is installed on the position of the chassis close to the discharge port of the laser engraving loading and unloading machine, and a blanking machine is installed below the re-inspection module; The loader includes a vibrating plate, and a straight vibrator is installed at the discharge port of the vibrating plate, and the discharge end of the straight vibrator is installed with two screw modules 1 distributed side by side, and two of the screw modules are installed with multiple-point receiving trays, and the two multi-point receiving trays are provided with multiple receiving holes. The manipulator includes a base, a mechanical arm is installed on the upper end of the base, and the output end of the mechanical arm is connected with a suction nozzle assembly, and the tray pusher includes a bracket, and the upper part of the bracket is fixedly connected with a guide rail, one end of the guide rail is fixedly connected with a magazine bin, and a plurality of stacked trays are placed in the magazine bin, a rodless cylinder is installed inside the bracket, and a pushing assembly connected to the output end of the rodless cylinder is slidably connected above the bracket, and positioning cylinders are installed on both side walls of the guide rail away from the magazine bin, and a stopper is also fixedly connected to the side wall port of the guide rail close to the positioning cylinder; The laser engraving loading and unloading machine includes a screw module 2, and the output end of the screw module 2 is connected to a mounting bracket, a telescopic cylinder is installed on the mounting bracket, and a hanger connected to the output end of the telescopic cylinder is slidably connected to the mounting bracket, a plurality of equally spaced brackets are fixedly connected to the side wall of the hanger, and a cylinder clamp is installed at the lower end of each bracket, the laser engraving module includes a plurality of symmetrically distributed pillars, and a lifting adjustment screw pair is installed inside each pillar, the side wall of the pillar is slidably connected to a laser engraving machine body connected to the output end of the lifting adjustment screw pair, the lifting module includes a screw module 3, and a lifting plate is connected to the output end of the screw module 3, and the lifting plate is located below the cylinder clamp; The suction nozzle assembly includes a plurality of vacuum suction nozzles distributed at equal intervals, a vacuum suction hole is opened in the middle inner wall of the vacuum suction nozzle, and the inner walls on both sides of the vacuum suction hole are connected with a slide groove, and the connection between the slide groove and the vacuum suction hole is fixedly connected to an elastic membrane, the inner wall of the vacuum suction nozzle is opened with a communicating air channel, and the slide groove is connected to the external air through the communicating air channel, the inner wall of the slide groove is slidably connected with a slide plate, and a plurality of symmetrically distributed elastic reset belts are fixedly connected between the side walls of the slide plate and the inner wall of the slide groove, the side wall of the slide plate facing the elastic membrane is fixedly connected with a conductive diaphragm, and the inner wall of the slide groove near the elastic membrane is fixedly connected with an electrode matching the conductive diaphragm, the side wall of the slide plate facing the electrode is also fixedly connected with a bracket penetrating the electrode, and the end of the bracket away from the slide plate is fixedly connected with a pusher head abutting the elastic membrane, a current measuring module electrically connected to the electrode is installed above the vacuum suction nozzle, and an alarm light electrically connected to the current measuring module is installed on the upper side wall of the vacuum suction nozzle; The current measurement module includes a current monitoring module and an alarm module, and the alarm module is electrically connected to the alarm light through the control processor. The current monitoring module monitors the current at both ends of the electrode in real time. If the current of the electrode does not change before and after sucking the workpiece, it indicates that there is a fault in the vacuum nozzle. The slide plate is made of insulating material, and the conductive diaphragm is made of flexible conductive material; The elastic film is made of elastic material, and a wear-resistant layer is bonded to the inner surface of the elastic film; A limit wire is fixedly connected between the side wall of the slide plate and the inner wall of the slide groove, and the length of the limit wire is less than the maximum extension distance of the elastic reset belt; The re-inspection module includes a gantry, and a screw module four is installed above the gantry, the output end of the screw module four is connected to a slide, and the slide is installed with a re-inspection camera and a defective product collection clamp placed side by side, the screw module five is installed below the gantry, and the output end of the screw module five is connected to a carrier seat matching the material tray, a blanking clamp is also installed above the screw module four, and the blanking machine is located on one side of the blanking clamp.

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