Full-automatic laser etching transfer printing equipment

Abstract

The invention discloses full-automatic laser etching transfer printing equipment capable of improving the production efficiency and reducing the labor cost. The device comprises a tray feeding mechanism and a tray discharging mechanism, a tray conveying device is arranged between the tray feeding mechanism and the tray discharging mechanism, a plurality of trays are stacked in the tray feeding mechanism, a plurality of products are placed in the trays, and a feeding and discharging station is arranged in the middle of the tray conveying device. A rotating mechanism is arranged in front of the feeding and discharging station, at least three carrier modules matched with products are annularly arrayed on the rotating mechanism, a feeding and discharging robot, a laser etching device and a transfer printing device are sequentially arranged on the outer edge of the rotating mechanism, and the feeding and discharging robot is used for feeding and discharging the products from trays in the feeding and discharging station to the carrier modules. The laser etching device is used for carrying out laser etching on products in the carrier module, and the transfer printing device is used for carrying out transfer printing on the products in the carrier module. The laser etching transfer printing device is applied to the technical field of laser etching transfer printing devices.

Description

Technical Field

[0001] The invention relates to a fully automatic laser engraving pad printing device, in particular to a fully automatic laser engraving pad printing device for the front and back surfaces of a watch case. Background Art

[0002] During the production process of watch cases, it is necessary to perform laser engraving on the front and back sides, and after laser engraving, it is also necessary to perform pad printing on the front and back sides. The traditional production method is that the operator takes out a product from the turntable in the unprocessed area, and places it steadily on the laser engraving tooling to fix it. Before placing the product, the cleanliness of the tooling must be confirmed. Then, the bottom of the product is facing down, and the product is pressed with both hands to confirm that the product is clamped in place. Then, the front side of the product is laser engraved by the laser engraving machine. After the laser engraving is completed, the operator takes out the product and puts it back on the turntable, and then gives it to the operator of the next process to perform laser engraving on the back side of the product. After the laser engraving on the front and back sides is completed, the next operator takes the product out of the turntable and puts it into the pad printing tooling for pad printing. This traditional operation not only has low production efficiency and high labor costs, but also the production quality of the product will be affected by the operator. If the product is not clamped in place when placed in the tooling, it will affect the quality of subsequent laser engraving or pad printing. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a fully automatic laser engraving pad printing device which can improve production efficiency and reduce labor costs.

[0004] The technical solution adopted by the present invention is: the present invention includes a pallet loading mechanism and a pallet unloading mechanism, a pallet conveying device is arranged between the pallet loading mechanism and the pallet unloading mechanism, a plurality of pallets are stacked in the pallet loading mechanism, a plurality of products are placed in the pallet, a loading and unloading station is arranged in the middle of the pallet conveying device, the pallet loading mechanism is used to convey the stacked pallets to the loading and unloading station one by one, the pallet unloading mechanism is used to unload the pallet stacks of products processed by the loading and unloading station, a rotating mechanism is arranged in front of the loading and unloading station, the circular array on the rotating mechanism has at least three carrier modules adapted to the products, a loading and unloading robot, a laser engraving device and a pad printing device are arranged on the outer edge of the rotating mechanism in sequence, the loading and unloading robot is used to load and unload the products from the pallet in the loading and unloading station to the carrier module, the laser engraving device is used to perform laser engraving on the products in the carrier module, and the pad printing device is used to perform pad printing on the products in the carrier module.

[0005] Furthermore, the rotating mechanism includes a rotating motor and a rotating carrier plate, the rotating carrier plate is a cross-shaped rotating plate, the center of the cross-shaped rotating plate is connected to the rotating motor, the rotating mechanism has four carrier modules in a circular array, the four carrier modules are respectively located at the four ends of the cross-shaped rotating plate, the four ends of the cross-shaped rotating plate are respectively the first workstation, the laser engraving station, the cooling station and the pad printing station, the loading and unloading robots are located at the side end of the first workstation, the laser engraving device is located above the laser engraving station, the cooling station is provided with an air-cooled cooler, the pad printing device is located above the pad printing station, the carrier module includes a carrier bottom plate, product carriers are provided on the outer and inner sides of the carrier bottom plate, and clamping claw avoidance grooves are provided at both ends of the middle part of the product carrier.

[0006] Furthermore, the two product carriers on the outer side and the inner side of the carrier bottom plate are respectively a product front carrier and a product back carrier, and the bottoms of the product front carrier and the product back carrier are both provided with through-beam sensors, and the through-beam sensors are used to detect whether the products are correctly placed in place; a product turning device is provided at the other side end of the first workstation, and the product turning device is used to turn over the products in the product front carrier and the product back carrier, and the loading and unloading robot is used to place the product turned over by the product turning device from the product front carrier into the product back carrier, and to unload the product after the product turning device has turned over the product back carrier.

[0007] Furthermore, a pallet lifting mechanism located below the pallet conveying device is provided at the loading and unloading station, and blockers and assembly line check valves are provided at the left and right ends of the pallet lifting mechanism respectively, and pallet incoming material sensors are provided below the left and right ends of the pallet lifting mechanism, and pallet pressure plates are provided on all sides above the pallet lifting mechanism, and the pallet lifting mechanism is used to lift and press the pallet on the pallet conveying device against the pallet pressure plate; a CCD camera assembly is provided directly above the pallet lifting mechanism, and the CCD camera assembly is used to capture the real-time position of each product on the pallet.

[0008] Further, the product turning device includes a lifting drive device, a turning cylinder connected to the lifting drive device, and a turning swing arm connected to the turning cylinder. The lower end of the turning swing arm is symmetrically provided with first inner-supporting jaw cylinders. The first inner-supporting jaw cylinders are symmetrically provided with inner-supporting jaw arms adapted to the jaw avoidance grooves. Both ends of the turning cylinder are symmetrically provided with swing arm in-place buffers. The swing arm in-place buffers are located in the swinging stroke of the turning swing arm and are used to control the turning swing arm to rotate between 0° and 180°. When the turning swing arm rotates 180°, the two inner-supporting jaw arms are respectively located directly above the product front carrier and the product back carrier at the first station. The loading and unloading robot includes a first robot. The lower end of the first robot is provided with a U-shaped mounting plate. Both ends of both sides of the U-shaped mounting plate are symmetrically provided with first lifters. Two of the first lifters on the same side at one end are installed with outer-clamping cylinders, and two of the first lifters on the same side at the other end are installed with second inner-supporting jaw cylinders. The outer-clamping cylinders are used to clamp the product from the outside, and the first inner-supporting jaw cylinders and the second inner-supporting jaw cylinders are used to clamp the product from the inside.

[0009] Further, the pad printing device includes two pad printing grooves. Pad printing liquid is installed in both of the pad printing grooves. Above the two pad printing grooves, there is a pad printing horizontal translation device. Two lifting pad printing heads are provided on the lower side of the front end of the pad printing horizontal translation device. Two pad printing wiping heads are provided on the lower side of the rear end of the pad printing horizontal translation device. The two lifting pad printing heads move between the pad printing grooves and the product carrier at the pad printing station under the drive of the pad printing horizontal translation device. A pad printing head cleaning mechanism is provided behind the pad printing grooves. The pad printing head cleaning mechanism includes a cleaning forward push drive device and a forward push carrier plate connected to the cleaning forward push drive device. One end of the forward push carrier plate is provided with a cleaning bracket. The upper end of the cleaning bracket is provided with a sticker output reel. The lower end of the cleaning bracket is provided with a sticker recycling rotating reel. The other end of the forward push carrier plate is provided with a cleaning carrier plate. Both ends of the cleaning carrier plate are provided with sticker rotating rollers. The sticker output by the sticker output reel passes through the two sticker rotating rollers and then returns to the sticker recycling rotating reel. At this time, the sticker sticking surface of the cleaning carrier plate faces upward. The cleaning carrier plate is driven by the cleaning forward push drive device to move directly below the two lifting pad printing heads.

[0010] Further, both the tray loading mechanism and the tray unloading mechanism include a tray frame. A tray lifting device is provided below the tray frame. Both ends of the tray frame are provided with tray lifting and supporting devices. The two tray lifting and supporting devices are used to lift and support the trays in the tray frame. The tray lifting device is used to lift the tray from the tray conveying device into the tray frame or to lift and lower the trays in the tray frame to the tray conveying device.

[0011] Furthermore, the laser engraving device includes a handwheel and screw lifting device and a laser engraving machine connected to the handwheel and screw lifting device, and the two product carriers of the laser engraving station are both located below the laser engraving machine.

[0012] Furthermore, guide blocks are provided at the bottom of the four ends of the cross-shaped rotating plate, and guide holes are symmetrically provided at both ends of the bottom of the guide block. A centering guide device is provided below the pad printing station, and the centering guide device includes a centering lifter and a centering guide block connected to the centering lifter, and the centering guide block is provided with a guide column adapted to the guide hole. The guide block at the pad printing station is located directly above the centering guide block, and a guide slope is provided at the upper end of the guide column, and the height of the guide column is less than the depth of the guide hole.

[0013] Furthermore, the product is a watch case, and the inner ring of the watch case is provided with a plurality of connecting ears. The front carrier of the product and the back carrier of the product are respectively used to accommodate the front watch case and the back watch case. The front carrier of the product and the back carrier of the product are both provided with positioning grooves adapted to the connecting ears.

[0014] The beneficial effects of the present invention are: 1. Through the pallet loading mechanism, the pallet unloading mechanism and the pallet conveying device, fully automated loading and unloading can be achieved, and only manual timed stacking of pallets to the pallet loading mechanism and timed removal of pallets from the pallet unloading mechanism are required, which can greatly save labor costs, and manual loading and unloading once can provide the present invention with long-term automatic processing and production; 2. The loading and unloading robots automatically load and unload materials to the rotating mechanism, and then the rotating mechanism is used to perform laser engraving and pad printing on the products, thereby improving the production rhythm and efficiency; 3. The product turning device cooperates with the product front carrier and the product back carrier to realize laser engraving and pad printing on the front and back of the product, which more efficiently improves production efficiency and greatly saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is an internal top view of the present invention; Figure 3 It is a schematic diagram of the internal partial structure of the present invention; Figure 4 It is a schematic diagram of the structure between the tray loading mechanism, the tray unloading mechanism and the tray conveying device; Figure 5 It is a structural diagram of the rotating mechanism; Figure 6 It is a schematic diagram of the structure of the vehicle module; Figure 7 It is a structural diagram of the loading and unloading robot; Figure 8 It is a schematic diagram of the structure of the laser engraving device; Fig. 9 It is a structural schematic diagram of a pad printing device; Fig.10 It is a structural schematic diagram of a product turning device; Fig.11 yes Figure 3 A magnified schematic diagram of part A; Fig.12 It is a structural schematic diagram of the pad printing head cleaning mechanism; Fig.13 It is a schematic diagram of the centering guide device. DETAILED DESCRIPTION

[0016] like Figures 1 to 13 As shown, in this embodiment, the present invention includes a tray loading mechanism 1 and a tray unloading mechanism 2, a tray conveying device 3 and an installation outer cover shell are arranged between the tray loading mechanism 1 and the tray unloading mechanism 2, an MCU control system is integrated on the installation outer cover shell, a plurality of trays 1a are stacked in the tray loading mechanism 1, the tray 1a includes a first accommodating cavity and a second accommodating cavity located at the upper end of the first accommodating cavity, the size of the second accommodating cavity is larger than the first accommodating cavity, a material plate 1a1 is adapted to be placed in the first accommodating cavity, a plurality of placement slots 1a2 adapted to the product 1b are arrayed in the material plate, a stacking edge 1a3 is arranged on the inner wall of the second accommodating cavity, and the stacking edge 1a3 is used to lift the first accommodating cavity of the second tray 1a to the stacking edge 1a3 of the first tray 1a; A loading and unloading station 4 is arranged in the middle of the pallet conveying device 3. The pallet loading mechanism 1 is used to convey the stacked pallets 1a one by one to the loading and unloading station 4. The pallet unloading mechanism 2 is used to unload the pallets 1a processed by the loading and unloading station 4 from the stack. A rotating mechanism 5 is arranged in front of the loading and unloading station 4. The rotating mechanism 5 has at least three carrier modules 6 adapted to the product 1b in a circular array. The outer edge of the rotating mechanism 5 is sequentially provided with a loading and unloading robot 7, a laser engraving device 8 and a pad printing device 9. The loading and unloading robot 7 is used to load and unload the product 1b from the pallet 1a in the loading and unloading station 4 to the carrier module 6. The laser engraving device 8 is used to laser engrave the product 1b in the carrier module 6. The pad printing device 9 is used to pad print the product 1b in the carrier module 6.

[0017] In this embodiment, the rotating mechanism 5 includes a rotating motor 51 and a rotating carrier 52, the rotating carrier 52 is a cross-shaped rotating plate, the center of the cross-shaped rotating plate is connected to the rotating motor 51, the rotating mechanism 5 has four carrier modules 6 in a circular array, the four carrier modules 6 are respectively located at the four ends of the cross-shaped rotating plate, the four ends of the cross-shaped rotating plate are respectively the first station 53, the laser engraving station 54, the cooling station 55 and the pad printing station 56, the loading and unloading robot 7 is located at the first station 53 At the side end, the laser engraving device 8 is located above the laser engraving station 54, the cooling station 55 is provided with an air-cooled cooler, the pad printing device 9 is located above the pad printing station 56, the carrier module 6 includes a carrier bottom plate 61, and product carriers 62 are provided on the outer and inner sides of the carrier bottom plate 61, and the middle ends of the product carrier 62 are provided with clamping claw avoidance grooves 63. This design facilitates the subsequent support and clamping of the product 1b from the product carrier 62; the two product carriers 62 are respectively a product front carrier 621 and a product back carrier 62. 22, the bottom of the product front carrier 621 and the product back carrier 622 are both provided with a through-beam sensor 64, and the through-beam sensor 64 is used to detect whether the product 1b is correctly placed. In this design, a through-beam channel is reserved at the bottom of the product carrier 62, and the through-beam light can be blocked only when the product is correctly placed; the other side end of the first station 53 is provided with a product turning device 10, and the product turning device 10 is used to turn over the product 1b in the product front carrier 621 and the product back carrier 622, and the loading and unloading robot 7 It is used to place the product 1b turned over by the product turning device 10 from the product front carrier 621 into the product back carrier 622, and to unload the product 1b turned over by the product turning device 10 from the product back carrier 622; this design can turn over the product 1b with the processed front side through the product turning device 10 and cooperate with the loading and unloading robot 7 to place it into the product back carrier 622 for back processing, and the product 1b with the processed back side is turned back to the front side through the product turning device 10, and the front side of the product 1b is placed back on the tray 1a through the loading and unloading robot 7.

[0018] In this embodiment, the loading and unloading station 4 is provided with a pallet lifting mechanism 41 located below the pallet conveying device 3, and the left and right ends of the pallet lifting mechanism 41 are respectively provided with a blocker 42 and an assembly line check 43, and a pallet incoming material sensor 44 is provided below the left and right ends of the pallet lifting mechanism 41, and the pallet incoming material sensor 44 is used to detect the incoming material situation of the pallet 1a, and the blocker 42 is used to block the pallet 1a from continuing to flow forward after it is in place, and the assembly line check 43 is used to prevent the pallet 1a from flowing back, and pallet pressing plates 45 are provided on all sides above the pallet lifting mechanism 41, and the pallet The tray lifting mechanism 41 is used to lift the pallet 1a on the pallet conveyor 3 and press it against the pallet pressure plate 45; a CCD camera assembly 46 is provided at the inner top of the mounting cover shell and directly above the pallet lifting mechanism 41, and the CCD camera assembly 46 is used to photograph the real-time position of each product 1b on the pallet 1a. Since the loading and unloading robot 7 may vibrate other products 1b to be processed when taking and placing products 1b, thereby affecting the initial position of the product 1b in the placement trough 1a2, the CCD camera assembly 46 is required to locate and take pictures in real time every time the loading and unloading robot 7 takes materials.

[0019] In this embodiment, the product turning device 10 includes a lifting drive device 101, a flip cylinder 102 connected to the lifting drive device 101, and a flip swing arm 103 connected to the flip cylinder 102. The lower end of the flip swing arm 103 is symmetrically provided with a first internally supported clamping claw cylinder 104, and the first internally supported clamping claw cylinder 104 is symmetrically provided with an internally supported clamping claw arm 105 adapted to the clamping claw avoidance groove 63. The two ends of the flip cylinder 102 are symmetrically provided with a swing arm in place buffer 106. The swing arm in place buffer 106 is located in the swing stroke of the flip swing arm 103, and is used to control the rotation of the flip swing arm 103 between 0° and 18 0°, when the flip swing arm 103 rotates 180°, the two inner support clamping claw arms 105 are respectively located above the product front carrier 621 and the product back carrier 622 of the first station 53; this design drives the flip swing arm 103 to rotate 180° through the flip cylinder 102, and then the lifting drive device 101 drives the entire flip swing arm 103 to descend, so that the two inner support clamping claw arms 105 are respectively located in the clamping claw avoidance groove 63 of the product front carrier 621 and the product back carrier 622 of the first station 53, and then the inner support clamps the product 1b and then resets it in turn through the lifting drive device 101 and the flip cylinder 102, so that the product 1b is turned over.

[0020] The loading and unloading robot 7 includes a first robot 71. A U-shaped mounting plate 72 is provided at the lower end of the first robot 71. At both ends of the two sides of the U-shaped mounting plate 72, first lifters 73 are symmetrically arranged. External clamping cylinders 74 are installed on two of the first lifters 73 on the same side at one end, and second internal supporting jaw cylinders 75 are installed on two of the first lifters 73 on the same side at the other end. The external clamping cylinders 74 are used to clamp the product 1b from the outside, and the first internal supporting jaw cylinder 104 and the second internal supporting jaw cylinder 75 are used to clamp the product 1b from the inside. This design clamps the two products after being turned over by the product turning device 10 with two external clamping cylinders 74, and the second internal supporting jaw cylinder 75 internally supports and clamps the product 1a from the tray 1a and places it on the product front carrier 621.

[0021] In this embodiment, the pad printing device 9 includes two pad printing grooves 91. Pad printing liquid is installed in each of the pad printing grooves 91. Above the two pad printing grooves 91, a pad printing horizontal translation device 92 is provided. At the lower front side of the pad printing horizontal translation device 92, two lifting pad printing heads 93 are provided. At the lower rear side of the pad printing horizontal translation device 92, two pad printing wiping heads 94 are provided. The pad printing wiping heads 94 are used to wipe the liquid level of the pad printing liquid in the pad printing grooves 91. The two lifting pad printing heads 93 move between the pad printing grooves 91 and the product carrier 62 at the pad printing station 56 under the drive of the pad printing horizontal translation device 92. This design can perform front and back pad printing on the product respectively through the two lifting pad printing heads 93. A pad printing head cleaning mechanism 95 is provided behind the pad printing grooves 91. The pad printing head cleaning mechanism 95 includes a cleaning forward push driving device 951 and a forward push carrier plate 952 connected to the cleaning forward push driving device 951. One end of the forward push carrier plate 952 is provided with a cleaning bracket 953. At the upper end of the cleaning bracket 953, a sticker output tray 954 is provided. At the lower end of the cleaning bracket 953, a sticker recycling rotating tray 955 is provided. The other end of the forward push carrier plate 952 is provided with a cleaning carrier plate 956. At both ends of the cleaning carrier plate 956, sticker rotating rollers 957 are provided. The sticker output from the sticker output tray 954 returns to the sticker recycling rotating tray 955 after passing through the two sticker rotating rollers 957. At this time, the sticker sticking surface of the cleaning carrier plate 956 faces upward. The cleaning carrier plate 956 is driven by the cleaning forward push driving device 951 to move to directly below the two lifting pad printing heads 93. This design can effectively clean the lifting pad printing heads 93.

[0022] In this embodiment, the pallet loading mechanism 1 and the pallet unloading mechanism 2 both include a pallet material frame 21, a pallet lifting device 22 is arranged below the pallet material frame 21, and pallet lifting and supporting devices 23 are arranged at both ends of the pallet material frame 21. The two pallet lifting and supporting devices 23 are used to lift and support the pallet 1a in the pallet material frame 21, specifically, to support the outer edge of the second cavity; the pallet lifting device 22 is used to lift the pallet 1a from the pallet conveying device 3 into the pallet material frame 21 or lift the pallet 1a in the pallet material frame 21 and lower it to the pallet conveying device 3.

[0023] In this embodiment, the laser engraving device 8 includes a handwheel screw lifting device 81 and a laser laser engraving machine 82 connected to the handwheel screw lifting device 81, and the two product carriers 62 of the laser engraving station 54 are both located below the laser laser engraving machine 82; this design uses the handwheel screw lifting device 81 to adjust the height of the laser laser engraving machine 82, and then uses the laser laser engraving machine 82 to perform front and back laser engraving on the product 1b.

[0024] In this embodiment, guide blocks 521 are provided at the bottom of the four ends of the cross-shaped rotating plate, and guide holes are symmetrically provided at both ends of the bottom of the guide block 521. A centering guide device is provided below the pad printing station 56, and the centering guide device includes a centering lifter 522 and a centering guide block 523 connected to the centering lifter 522. The centering guide block 523 is provided with a guide column 524 adapted to the guide hole. The guide block 521 at the pad printing station 56 is located Directly above the centering guide block 523, the upper end of the guide column 524 is provided with a guide slope, and the height of the guide column 524 is less than the depth of the guide hole; this design can not only effectively perform precise fine-tuning of the positioning to ensure the accuracy and quality of product processing, but also the centering guide block 523 is lifted to the bottom of the guide block 521, thereby providing support force for the guide block 521 at the pad printing station 56, avoiding slight shaking of the product 1b when the lifting pad printing head 93 descends, affecting the product quality.

[0025] In this embodiment, the product 1b is a watch case, and the inner ring of the watch case is provided with a plurality of connecting ears 1b1. The product front carrier 621 and the product back carrier 622 are respectively used to accommodate the front watch case and the back watch case. The product front carrier 621 and the product back carrier 622 are both provided with positioning grooves 6211 adapted to the connecting ears 1b1.

[0026] In this embodiment, the processing process of the present invention is: manually stacking pallets to the pallet loading mechanism, conveying the pallet at the bottom of the pallet loading mechanism to the loading and unloading station through the pallet conveying device, and then lifting the pallet and pressing it against the pallet pressure plate through the pallet lifting mechanism, and then photographing the position of the product to be taken in the pallet through the CCD camera assembly, and then clamping the product by the second inner support claw cylinder of the loading and unloading robot and putting it into the product front carrier, and then processing the product, after the processing is completed, the product turning device cooperates with the outer clamping cylinder of the loading and unloading robot to put it into the product back carrier, and put the new product into the product front carrier, and then continue to move to the laser engraving station through the rotating mechanism to laser engrave the products in the product front carrier and the product back carrier through the laser laser engraving machine, and then transfer to the cooling station for cooling, and then enter the pad printing station to pad print the product by lifting the pad printing head, and then the products processed on the front and back sides are put back on the pallet by the loading and unloading robot, and when the products on the pallet are processed, they flow back to the pallet unloading mechanism.

[0027] The invention is applied to the technical field of laser engraving pad printing equipment.

[0028] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A fully automatic laser engraving pad printing device, characterized by: The invention comprises a pallet loading mechanism (1) and a pallet unloading mechanism (2), wherein a pallet conveying device (3) is arranged between the pallet loading mechanism (1) and the pallet unloading mechanism (2), wherein a plurality of pallets (1a) are stacked in the pallet loading mechanism (1), wherein a plurality of products (1b) are placed in the pallet, and a loading and unloading station (4) is arranged in the middle of the pallet conveying device (3), wherein the pallet loading mechanism (1) is used to convey the stacked pallets (1a) one by one to the loading and unloading station (4), and the pallet unloading mechanism (2) is used to unload the pallets (1a) on which the products (1b) have been processed in the loading and unloading station (4). 4) is provided in front of a rotating mechanism (5), the rotating mechanism (5) having at least three carrier modules (6) adapted to the product (1b) in a circular array, the outer edge of the rotating mechanism (5) being provided with a loading and unloading robot (7), a laser engraving device (8) and a pad printing device (9) in sequence, the loading and unloading robot (7) being used for loading and unloading the product (1b) from the tray (1a) in the loading and unloading station (4) to the carrier module (6), the laser engraving device (8) being used for laser engraving the product (1b) in the carrier module (6), and the pad printing device (9) being used for pad printing the product (1b) in the carrier module (6).

2. The fully automatic laser engraving pad printing equipment according to claim 1 is characterized by: The rotating mechanism (5) comprises a rotating motor (51) and a rotating carrier (52), wherein the rotating carrier (52) is a cross-shaped rotating plate, the center of the cross-shaped rotating plate is connected to the rotating motor (51), and the rotating mechanism (5) has four carrier modules (6) in a circular array, the four carrier modules (6) are respectively located at four ends of the cross-shaped rotating plate, and the four ends of the cross-shaped rotating plate are respectively a first station (53), a laser engraving station (54), a cooling station (55) and a pad printing station (56). 6), the loading and unloading robot (7) is located at the side end of the first workstation (53), the laser engraving device (8) is located above the laser engraving workstation (54), the cooling workstation (55) is provided with an air-cooled cooler, the pad printing device (9) is located above the pad printing workstation (56), the carrier module (6) includes a carrier base plate (61), the outer side and the inner side of the carrier base plate (61) are provided with product carriers (62), and the middle ends of the product carrier (62) are provided with clamping claw avoidance grooves (63).

3. The fully automatic laser engraving pad printing equipment according to claim 2 is characterized by: The two product carriers (62) on the outer side and the inner side of the carrier bottom plate (61) are respectively a product front carrier (621) and a product back carrier (622); the bottoms of the product front carrier (621) and the product back carrier (622) are both provided with a beam sensor (64); the beam sensor (64) is used to detect whether the product (1b) is correctly placed in place; the other side end of the first workstation (53) is provided with a product turning device (10); the product turning device (10) is used to turn over the products (1b) in the product front carrier (621) and the product back carrier (622); the loading and unloading robot (7) is used to place the product (1b) turned over by the product turning device (10) from the product front carrier (621) into the product back carrier (622), and unload the product (1b) after being turned over by the product turning device (10) from the product back carrier (622).

4. The fully automatic laser engraving pad printing equipment according to claim 1 is characterized by: The loading and unloading station (4) is provided with a pallet lifting mechanism (41) located below the pallet conveying device (3); a blocker (42) and an assembly line check (43) are provided at the left and right ends of the pallet lifting mechanism (41), respectively; and a pallet incoming material sensor (44) is provided below the left and right ends of the pallet lifting mechanism (41); pallet pressing plates (45) are provided on all sides above the pallet lifting mechanism (41); the pallet lifting mechanism (41) is used to lift and press the pallet (1a) on the pallet conveying device (3) against the pallet pressing plates (45); and a CCD camera assembly (46) is provided directly above the pallet lifting mechanism (41); the CCD camera assembly (46) is used to photograph the real-time position of each product (1b) on the pallet (1a).

5. The fully automatic laser engraving pad printing equipment according to claim 3 is characterized by: The product turning device (10) includes a lifting drive device (101), a turning cylinder (102) connected to the lifting drive device (101), and a turning swing arm (103) connected to the turning cylinder (102). At the lower end of the turning swing arm (103), first inner-supporting jaw cylinders (104) are symmetrically arranged. The first inner-supporting jaw cylinders (104) are symmetrically provided with inner-supporting jaw arms (105) adapted to the jaw avoidance grooves (63). At both ends of the turning cylinder (102), swing arm in-place buffers (106) are symmetrically arranged. The swing arm in-place buffers (106) are located in the swing stroke of the turning swing arm (103) and are used to control the rotation of the turning swing arm (103) between 0° and 180°. When the turning swing arm (103) rotates 180°, the two inner-supporting jaw arms (105) are respectively located directly above the product front carrier (621) and the product back carrier (622) at the first station (53). The loading and unloading robot (7) includes a first robot (71). At the lower end of the first robot (71), a U-shaped mounting plate (72) is provided. At both ends on both sides of the U-shaped mounting plate (72), first lifters (73) are symmetrically arranged. At one end on the same side, two of the first lifters (73) are installed with outer-clamping cylinders (74), and at the other end on the same side, two of the first lifters (73) are installed with second inner-supporting jaw cylinders (75). The outer-clamping cylinders (74) are used to clamp the product (1b) from the outside, and the first inner-supporting jaw cylinders (104) and the second inner-supporting jaw cylinders (75) are used to clamp the product (1b) from the inside.

6. The fully automatic laser engraving pad printing equipment according to claim 2, characterized in that: The pad printing device (9) comprises two pad printing grooves (91), each of which is filled with pad printing liquid; a pad printing transverse shifting device (92) is arranged above the two pad printing grooves (91); two lifting pad printing heads (93) are arranged at the lower side of the front end of the pad printing transverse shifting device (92); two pad printing leveling heads (94) are arranged at the lower side of the rear end of the pad printing transverse shifting device (92); the two lifting pad printing heads (93) are driven by the pad printing transverse shifting device (92) to move between the pad printing grooves (91) and the product carrier (62) at the pad printing station (56); a pad printing head cleaning mechanism (95) is arranged at the rear of the pad printing grooves (91); the pad printing head cleaning mechanism (95) comprises a cleaning front push driving device (951) and a front push driving device (951) connected to the cleaning front push driving device (951); A carrier plate (952), one end of the forward-pushing carrier plate (952) is provided with a cleaning bracket (953), the upper end of the cleaning bracket (953) is provided with a rubber paper output tray (954), the lower end of the cleaning bracket (953) is provided with a rubber paper recovery rotating tray (955), the other end of the forward-pushing carrier plate (952) is provided with a cleaning carrier plate (956), both ends of the cleaning carrier plate (956) are provided with rubber paper rotating rollers (957), the rubber paper output from the rubber paper output tray (954) passes through the two rubber paper rotating rollers (957) and then returns to the rubber paper recovery rotating tray (955), at which time the rubber paper sticky surface of the cleaning carrier plate (956) faces upwards, and the cleaning carrier plate (956) is driven by the cleaning forward-pushing driving device (951) to move to the position directly below the two lifting pad printing heads (93).

7. The fully automatic laser engraving pad printing equipment according to claim 1, characterized in that: The pallet loading mechanism (1) and the pallet unloading mechanism (2) both comprise a pallet material frame (21); a pallet lifting device (22) is arranged below the pallet material frame (21); pallet lifting and supporting devices (23) are arranged at both ends of the pallet material frame (21); the two pallet lifting and supporting devices (23) are used to lift and support the pallet (1a) in the pallet material frame (21); and the pallet lifting device (22) is used to lift the pallet (1a) from the pallet conveying device (3) into the pallet material frame (21) or lift the pallet (1a) in the pallet material frame (21) down to the pallet conveying device (3).

8. The fully automatic laser engraving pad printing equipment according to claim 2 is characterized by: The laser engraving device (8) comprises a handwheel screw lifting device (81) and a laser engraving machine (82) connected to the handwheel screw lifting device (81), and the two product carriers (62) of the laser engraving station (54) are both located below the laser engraving machine (82).

9. The fully automatic laser engraving pad printing equipment according to claim 3, characterized in that: Guide blocks (521) are provided at the bottom of the four ends of the cross-shaped rotating plate, and guide holes are symmetrically provided at both ends of the bottom of the guide blocks (521). A centering guide device is provided below the pad printing station (56), and the centering guide device comprises a centering lifter (522) and a centering guide block (523) connected to the centering lifter (522). The centering guide block (523) is provided with a guide column (524) adapted to the guide hole. The guide block (521) at the pad printing station (56) is located directly above the centering guide block (523), and a guide slope is provided at the upper end of the guide column (524), and the height of the guide column (524) is less than the depth of the guide hole.

10. The fully automatic laser engraving pad printing equipment according to claim 3, characterized in that: The product (1b) is a watch case, and the inner ring of the watch case is provided with a plurality of connecting ears (1b1). The front carrier (621) of the product and the back carrier (622) of the product are respectively used to fit and place the front watch case and the back watch case. The front carrier (621) of the product and the back carrier (622) of the product are both provided with positioning grooves (6211) that are compatible with the connecting ears (1b1).

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