A fully automatic laser engraving and pad printing device

Abstract

The present invention discloses a fully automatic laser engraving and pad printing device for improving production efficiency and reducing labor costs. The present invention includes a tray loading mechanism and a tray unloading mechanism. A tray conveying device is arranged between the tray loading mechanism and the tray unloading mechanism. A number of trays are stacked in the tray loading mechanism, and a number of products are placed in the trays. A loading and unloading station is arranged in the middle of the tray conveying device. A rotating mechanism is arranged in front of the loading and unloading station. At least three carrier modules adapted to the products are annularly arrayed on the rotating mechanism. A loading and unloading robot, a laser engraving device, and a pad printing device are sequentially arranged along the outer edge of the rotating mechanism. The loading and unloading robot is used for loading and unloading the products between the trays in the loading and unloading station and the carrier modules. The laser engraving device is used for laser engraving the products in the carrier modules. The pad printing device is used for pad printing the products in the carrier modules. The present invention is applied to the technical field of laser engraving and pad printing devices.

Description

Technical Field

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

[0002] During the production of a watch case, laser engraving needs to be performed on both its front and back sides, and pad printing also needs to be carried out on both sides after laser engraving. The traditional production method is that an operator takes out a product from the turnover tray in the unprocessed area, steadily places it on the laser engraving tooling for fixation. Before placing the product, the cleanliness of the tooling needs to be confirmed. Then, with the product facing downwards, the operator presses the product with both hands to confirm that the product is properly clamped. Then, the front side of the product is laser engraved by a laser engraving machine. After the laser engraving is completed, the operator takes out the product and puts it back into the turnover tray, and then the operator of the next process performs laser engraving on the back side of the product. After the laser engraving on both the front and back sides is completed, another operator takes out the product from the turnover tray and puts it into the pad printing tooling for pad printing operations. This traditional operation not only has a low production efficiency and high labor costs, but also the production quality of the product is affected by the operator. For example, if the product is not properly clamped when placed in the tooling, it will affect the subsequent laser engraving or pad printing quality. 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 and pad printing device that improves production efficiency and reduces labor costs.

[0004] The technical solution adopted by the present invention is as follows: The present invention includes a tray loading mechanism and a tray unloading mechanism. A tray conveying device is arranged between the tray loading mechanism and the tray unloading mechanism. A plurality of trays are stacked in the tray loading mechanism, and a plurality of products are placed in the trays. An upper and lower material station is arranged in the middle of the tray conveying device. The tray loading mechanism is used to sequentially convey the stacked trays to the upper and lower material station. The tray unloading mechanism is used to stack and unload the trays with the processed products at the upper and lower material station. A rotating mechanism is arranged in front of the upper and lower material station. At least three carrier modules adapted to the products are annularly arranged on the rotating mechanism. Along the outer edge of the rotating mechanism, an upper and lower material robot, a laser engraving device, and a pad printing device are sequentially arranged. The upper and lower material robot is used to load and unload the products between the trays at the upper and lower material station and the carrier modules. The laser engraving device is used to perform laser engraving on the products in the carrier modules. The pad printing device is used to perform pad printing on the products in the carrier modules.

[0005] Furthermore, the rotation mechanism includes a rotation 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 rotation motor. Four carrier modules are annularly arrayed on the rotation mechanism. 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 a first station, a laser engraving station, a cooling station, and a pad printing station. The loading and unloading robot is located at the side of the first station. The laser engraving device is located above the laser engraving station. An air-cooled cooler is provided at the cooling station. The pad printing device is located above the pad printing station. The carrier module includes a carrier bottom plate. Product carriers are provided on both the outer side and the inner side of the carrier bottom plate. 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. Opposite sensors are provided at the bottoms of the product front carrier and the product back carrier. The opposite sensors are used to detect whether the product is placed correctly. A product turning device is provided at the other side end of the first station. The product turning device is used to turn the products in the product front carrier and the product back carrier. The loading and unloading robot is used to put the product turned by the product turning device from the product front carrier into the product back carrier, and unload the product turned by the product turning device from the product back carrier.

[0007] Furthermore, a tray lifting mechanism is provided at the loading and unloading station below the tray conveying device. A stopper and a pipeline check valve are respectively provided at the left and right ends of the tray lifting mechanism. Tray incoming sensors are provided below the left and right ends of the tray lifting mechanism. Tray pressing plates are provided around the upper part of the tray lifting mechanism. The tray lifting mechanism is used to lift and press the tray on the tray conveying device against the tray pressing plates. A CCD camera assembly is provided directly above the tray lifting mechanism. The CCD camera assembly is used to photograph the real-time positions of the products on each tray.

[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. The two ends of the turning cylinder are symmetrically provided with swing arm in-place buffers. The swing arm in-place buffers are located in the swing stroke of the turning swing arm and are used to control the rotation of the turning swing arm 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. A U-shaped mounting plate is provided at the lower end of the first robot. First lifters are symmetrically provided at both ends of both sides of the U-shaped mounting plate. Outer clamping cylinders are installed on two of the first lifters on the same side at one end, and second inner-supporting jaw cylinders are installed on two of the first lifters on the same side at the other end. 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, and pad printing liquid is installed in both of the pad printing grooves. A pad printing transverse movement device is provided above the two pad printing grooves. Two lifting pad printing heads are provided on the lower side of the front end of the pad printing transverse movement device, and two pad printing wiping heads are provided on the lower side of the rear end of the pad printing transverse movement 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 transverse movement 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. A sticker output reel is provided at the upper end of the cleaning bracket, and a sticker recycling rotating reel is provided at the lower end of the cleaning bracket. The other end of the forward push carrier plate is provided with a cleaning carrier plate. Sticker rotating rollers are provided at both ends of the cleaning carrier plate. 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, and 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. Tray lifting and supporting devices are provided at both ends of the tray frame. 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 screw lifting device and a laser engraving machine connected to the handwheel screw lifting device, and both of the product carriers at the engraving station are located below the laser engraving machine.

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

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

[0014] The beneficial effects of the present invention are as follows: 1. Through the tray loading mechanism, the tray unloading mechanism and the tray conveying device, fully automatic loading and unloading can be achieved. Only manual timing is required to stack trays onto the tray loading mechanism and take out trays from the tray unloading mechanism at regular intervals, which can greatly save labor costs. And once manual loading and unloading is performed, it can supply the long-term automatic processing and production of the present invention; 2. The loading and unloading robot automatically loads and unloads to the rotating mechanism, and then the rotating mechanism engraves and pad prints the product, improving the production rhythm and efficiency; 3. Through the product turning device cooperating with the front product carrier and the back product carrier, engraving and pad printing on the front and back of the product can be achieved, more efficiently improving the production efficiency and greatly saving labor costs. Description of the Drawings

[0015] Figure 1 is a schematic structural view of the present invention;

[0016] Figure 2 is an internal top view of the present invention;

[0017] Figure 3 is a schematic view of the partial internal structure of the present invention;

[0018] Figure 4 is a schematic structural view between the tray loading mechanism, the tray unloading mechanism and the tray conveying device;

[0019] Figure 5 is a schematic structural view of the rotating mechanism;

[0020] Figure 6 It is a schematic structural diagram of a vehicle module;

[0021] Figure 7 It is a schematic structural diagram of a loading and unloading robot;

[0022] Figure 8 It is a schematic structural diagram of a laser engraving device;

[0023] Figure 9 It is a schematic structural diagram of a pad printing device;

[0024] Figure 10 It is a schematic structural diagram of a product turning device;

[0025] Figure 11 It is Figure 3 an enlarged schematic diagram of part A in

[0026] Figure 12 It is a schematic structural diagram of a pad printing head cleaning mechanism;

[0027] Figure 13 It is a schematic diagram of a centering and guiding device. Detailed implementation manners

[0028] Such as Figures 1 to 13As shown, in this embodiment, the present invention includes a pallet loading mechanism 1 and a pallet unloading mechanism 2. A pallet conveying device 3 and an installation outer housing are arranged between the pallet loading mechanism 1 and the pallet unloading mechanism 2. The installation outer housing is integrated with an MCU control system. A number of pallets 1a are stacked in the pallet loading mechanism 1. The pallet 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 that of the first accommodating cavity. A material plate 1a1 is adaptively placed in the first accommodating cavity. A number of placement slots 1a2 adapted to the product 1b are arrayed in the material plate. A stacking edge 1a3 is provided on the inner wall of the second accommodating cavity. The stacking edge 1a3 is used to lift the first accommodating cavity of the second pallet 1a on the stacking edge 1a3 of the first pallet 1a. A loading and unloading station 4 is provided in the middle of the pallet conveying device 3. The pallet loading mechanism 1 is used to convey the stacked pallets 1a to the loading and unloading station 4 one by one. The pallet unloading mechanism 2 is used to stack and unload the pallets 1a with the processed product 1b at the loading and unloading station 4. A rotating mechanism 5 is provided in front of the loading and unloading station 4. At least three carrier modules 6 adapted to the product 1b are annularly arrayed on the rotating mechanism 5. An upper and lower material robot 7, a laser engraving device 8 and a pad printing device 9 are sequentially arranged along the outer edge of the rotating mechanism 5. The upper and lower material robot 7 is used for loading and unloading the product 1b between the pallet 1a at the loading and unloading station 4 and the carrier module 6. The laser engraving device 8 is used for laser engraving the product 1b in the carrier module 6. The pad printing device 9 is used for pad printing the product 1b in the carrier module 6.

[0029] In this embodiment, the rotating mechanism 5 includes a rotating motor 51 and a rotating carrier plate 52. The rotating carrier plate 52 is a cross-shaped rotating plate. The center of the cross-shaped rotating plate is connected to the rotating motor 51. Four carrier modules 6 are annularly arranged on the rotating mechanism 5. 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 a first station 53, a laser engraving station 54, a cooling station 55, and a pad printing station 56. The loading and unloading robot 7 is located at the side of the first station 53. The laser engraving device 8 is located above the laser engraving station 54. An air-cooled cooler is provided at the cooling station 55. The pad printing device 9 is located above the pad printing station 56. The carrier module 6 includes a carrier bottom plate 61. Product carriers 62 are provided on both the outer side and the inner side of the carrier bottom plate 61. Claw avoidance grooves 63 are provided at both ends of the middle part of the product carrier 62. This design facilitates subsequent internal 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 622. Opposite sensors 64 are provided at the bottoms of the product front carrier 621 and the product back carrier 622. The opposite sensors 64 are used to detect whether the product 1b is correctly placed. In this design, an opposite light path is reserved at the bottom of the product carrier 62. Only when the product is correctly placed can the opposite light be blocked. A product turning device 10 is provided at the other side end of the first station 53. 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. 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. This design can turn over the product 1b with the front side processed by 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 side processing. The product 1b with the back side processed is turned back to the front side by the product turning device 10, and the front side of the product 1b is placed back on the tray 1a by the loading and unloading robot 7.

[0030] In this embodiment, a pallet lifting mechanism 41 is provided at the loading and unloading station 4 below the pallet conveying device 3. A stopper 42 and a pipeline check valve 43 are respectively arranged at the left and right ends of the pallet lifting mechanism 41. A pallet incoming material sensor 44 is arranged below the left and right ends of the pallet lifting mechanism 41. The pallet incoming material sensor 44 is used to detect the incoming situation of the pallet 1a. The stopper 42 is used to block the continuous forward flow of the pallet 1a after it reaches the position. The pipeline check valve 43 is used to prevent the pallet 1a from flowing back. Pallet pressing plates 45 are arranged around the upper part of 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. A CCD camera assembly 46 is arranged at the top inside the installation outer cover shell and directly above the pallet lifting mechanism 41. The CCD camera assembly 46 is used to photograph the real-time positions of each product 1b on the pallet 1a. Since the loading and unloading robot 7 may vibrate other products 1b to be processed when picking and placing the product 1b, thus affecting the initial position of the product 1b in the placement groove 1a2, the CCD camera assembly 46 needs to perform real-time positioning and photographing every time the loading and unloading robot 7 picks up the material.

[0031] In this embodiment, 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. First inner support type jaw cylinders 104 are symmetrically arranged at the lower end of the turning swing arm 103. The first inner support type jaw cylinders 104 are symmetrically provided with inner support jaw arms 105 adapted to the jaw avoidance grooves 63. Swing arm in-place buffers 106 are symmetrically arranged at both ends of the turning cylinder 102. 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 support jaw arms 105 are respectively directly above the product front carrier 621 and the product back carrier 622 at the first station 53. This design drives the turning swing arm 103 to rotate 180° through the turning cylinder 102, and then the lifting drive device 101 drives the entire turning swing arm 103 to descend, so that the two inner support jaw arms 105 are respectively located in the jaw avoidance grooves 63 of the product front carrier 621 and the product back carrier 622 at the first station 53. Then, the product 1b is internally supported and clamped, and then the lifting drive device 101 and the turning cylinder 102 are reset in sequence to turn the product 1b over.

[0032] 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 elevators 73 are symmetrically arranged. Two first elevators 73 on the same side of one end are equipped with an external clamping cylinder 74, and two first elevators 73 on the same side of the other end are equipped with a second internal supporting jaw cylinder 75. The external clamping cylinder 74 is 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.

[0033] 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 transverse moving device 92 is provided. At the lower front side of the pad printing transverse moving device 92, two lifting pad printing heads 93 are provided. At the lower rear side of the pad printing transverse moving device 92, two pad printing smoothing heads 94 are provided. The pad printing smoothing heads 94 are used to smooth 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 transverse moving device 92. This design can perform front pad printing and back pad printing on the product respectively through the two lifting pad printing heads 93; behind the pad printing grooves 91, a pad printing head cleaning mechanism 95 is provided. The pad printing head cleaning mechanism 95 includes a cleaning forward pushing drive device 951 and a forward pushing carrier plate 952 connected to the cleaning forward pushing drive device 951. At one end of the forward pushing carrier plate 952, a cleaning bracket 953 is provided. 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. At the other end of the forward pushing carrier plate 952, a cleaning carrier plate 956 is provided. 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 forward pushing drive device 951 drives the cleaning carrier plate 956 to move directly below the two lifting pad printing heads 93; this design can effectively clean the lifting pad printing heads 93.

[0034] In this embodiment, both the tray loading mechanism 1 and the tray unloading mechanism 2 include a tray storage frame 21. A tray lifting device 22 is provided below the tray storage frame 21, and tray lifting and supporting devices 23 are provided at both ends of the tray storage frame 21. The two tray lifting and supporting devices 23 are used to lift and support the tray 1a in the tray storage frame 21, specifically to support the outer edge of the second cavity. The tray lifting device 22 is used to lift the tray 1a from the tray conveying device 3 into the tray storage frame 21 or to lift and lower the tray 1a in the tray storage frame 21 to the tray conveying device 3.

[0035] In this embodiment, the laser engraving device 8 includes a handwheel screw lifting device 81 and a laser engraving machine 82 connected to the handwheel screw lifting device 81. Both product carriers 62 at the laser engraving station 54 are located below the laser engraving machine 82. With this design, after adjusting the height of the laser engraving machine 82 through the handwheel screw lifting device 81, the front and back of the product 1b are engraved by the laser engraving machine 82.

[0036] In this embodiment, guide blocks 521 are provided at the bottoms of the four ends of the cross-shaped rotating plate. Guide holes are symmetrically provided at both ends of the bottom of the guide block 521. A centering and guiding device is provided below the pad printing station 56. The centering and guiding 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 guide posts 524 adapted to the guide holes. The guide blocks 521 at the pad printing station 56 are located directly above the centering guide block 523. The upper end of the guide post 524 is provided with a guide slope, and the height of the guide post 524 is less than the depth of the guide hole. With this design, not only can the positioning be accurately fine-tuned 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 a supporting force for the guide block 521 at the pad printing station 56 to prevent slight shaking of the product 1b when the lifting pad printing head 93 descends, which may affect the product quality.

[0037] In this embodiment, the product 1b is a watch case. A plurality of connecting lugs 1b1 are provided on the inner ring of the watch case. The front product carrier 621 and the back product carrier 622 are respectively used to fit and place the front watch case and the back watch case. The front product carrier 621 and the back product carrier 622 are both provided with positioning slots 6211 adapted to the connecting lugs 1b1.

[0038] In this embodiment, the processing process of the present invention is as follows: manually stack pallets onto the pallet loading mechanism, convey the pallet at the bottom of the pallet loading mechanism to the loading and unloading station through the pallet conveying device, then lift the pallet through the pallet lifting mechanism and press it tightly against the pallet pressing plate. Next, use the CCD camera assembly to capture the position of the product to be taken in the pallet, then use the second inner-supporting jaw cylinder of the loading and unloading robot to grip the product and place it into the front product carrier. Then, process the product. After processing, use the product turning device in cooperation with the outer clamping cylinder of the loading and unloading robot to place it into the back product carrier, and place a new product into the front product carrier. Then, continue to move to the laser engraving station through the rotating mechanism and use the laser engraving machine to engrave the products in the front product carrier and the back product carrier. Then, transfer to the cooling station for cooling, and then enter the pad printing station to pad print the product through the lifting pad printing head. Then, the products with both sides processed are placed back onto the pallet by the loading and unloading robot. When the products on the pallet are processed, they flow back to the pallet unloading mechanism.

[0039] The present invention is applied to the technical field of laser engraving and pad printing equipment.

[0040] Although the embodiments of the present invention are described with actual solutions, they do not constitute a limitation to the meaning of the present invention. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. A fully automatic laser engraving and pad printing device, characterized in that: It includes a pallet loading mechanism (1) and a pallet unloading mechanism (2). A pallet conveying device (3) is arranged between the pallet loading mechanism (1) and the pallet unloading mechanism (2). A number of pallets (1a) are stacked in the pallet loading mechanism (1), and a number of products (1b) are placed in the pallets. 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) to the loading and unloading station (4) one by one. The pallet unloading mechanism (2) is used to stack and unload the pallets (1a) with processed products (1b) at the loading and unloading station (4). A rotating mechanism (5) is arranged in front of the loading and unloading station (4). At least three carrier modules (6) adapted to the products (1b) are annularly arrayed on the rotating mechanism (5). Along the outer edge of the rotating mechanism (5), a loading and unloading robot (7), a laser engraving device (8) and a pad printing device (9) are sequentially arranged. The loading and unloading robot (7) is used for loading and unloading the products (1b) between the pallets (1a) at the loading and unloading station (4) and the carrier modules (6). The laser engraving device (8) is used for laser engraving the products (1b) in the carrier modules (6). The pad printing device (9) is used for pad printing the products (1b) in the carrier modules (6). The rotating mechanism (5) includes a rotating motor (51) and a rotating carrier plate (52). The rotating carrier plate (52) is a cross-shaped rotating plate. The center of the cross-shaped rotating plate is connected to the rotating motor (51). Four carrier modules (6) are annularly arrayed on the rotating mechanism (5). 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 a first station (53), a laser engraving station (54), a cooling station (55) and a pad printing station (56). The loading and unloading robot (7) is located at the side end of the first station (53). The laser engraving device (8) is located above the laser engraving station (54). An air-cooled cooler is arranged at the cooling station (55). The pad printing device (9) is located above the pad printing station (56). The carrier module (6) includes a carrier bottom plate (61). Product carriers (62) are arranged on both the outer side and the inner side of the carrier bottom plate (61). Claw avoidance grooves (63) are arranged at both ends in the middle of the product carriers (62). The two product carriers (62) on the outer and inner sides of the vehicle floor (61) are respectively a product front carrier (621) and a product back carrier (622). Opposite sensors (64) are provided at the bottoms of the product front carrier (621) and the product back carrier (622). The opposite sensors (64) are used to detect whether the product (1b) is correctly placed in position. A product turning device (10) is provided at the other end of the first station (53). 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). 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).

2. The fully automatic laser engraving and pad printing device according to claim 1, characterized in that: A pallet lifting mechanism (41) is provided at the loading and unloading station (4) and is located below the pallet conveying device (3). A stopper (42) and a pipeline check valve (43) are respectively provided at the left and right ends of the pallet lifting mechanism (41). A pallet incoming sensor (44) is provided below the left and right ends of the pallet lifting mechanism (41). Pallet pressing plates (45) are provided around the upper part of the pallet lifting mechanism (41). The pallet lifting mechanism (41) is used to lift the pallet (1a) on the pallet conveying device (3) and press it tightly against the pallet pressing plates (45). 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 positions of the products (1b) on the pallet (1a).

3. A fully automatic laser engraving and pad printing device according to claim 1, characterized in that: 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 swinging 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). 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.

4. A fully automatic laser engraving and pad printing device according to claim 1, characterized in that: The pad printing device (9) includes two pad printing tanks (91), with pad printing liquid installed in each of the pad printing tanks (91). Above the two pad printing tanks (91), there is a pad printing transverse movement device (92). At the lower front side of the pad printing transverse movement device (92), there are two lifting pad printing heads (93), and at the lower rear side of the pad printing transverse movement device (92), there are two pad printing flattening heads (94). The two lifting pad printing heads (93) move between the pad printing tanks (91) and the product carrier (62) at the pad printing station (56) under the drive of the pad printing transverse movement device (92). Behind the pad printing tanks (91), there is a pad printing head cleaning mechanism (95). The pad printing head cleaning mechanism (95) includes a cleaning forward pushing drive device (951) and a forward pushing carrier plate (952) connected to the cleaning forward pushing drive device (951). At one end of the forward pushing carrier plate (952), there is a cleaning support (953). At the upper end of the cleaning support (953), there is a sticker output tray (954), and at the lower end of the cleaning support (953), there is a sticker recycling rotating tray (955). At the other end of the forward pushing carrier plate (952), there is a cleaning carrier plate (956). At both ends of the cleaning carrier plate (956), there are sticker rotating rollers (957). The sticker output from the sticker output tray (954) passes through the two sticker rotating rollers (957) and then returns to the sticker recycling rotating tray (955). At this time, the sticker sticking surface of the cleaning carrier plate (956) faces upward, and the cleaning carrier plate (956) is driven by the cleaning forward pushing drive device (951) to move directly below the two lifting pad printing heads (93).

5. A fully automatic laser engraving and pad printing device according to claim 1, characterized in that: Both the tray loading mechanism (1) and the tray unloading mechanism (2) include a tray storage frame (21). Below the tray storage frame (21), there is a tray lifting device (22). At both ends of the tray storage frame (21), there are tray lifting and supporting devices (23). The two tray lifting and supporting devices (23) are used to lift and support the trays (1a) inside the tray storage frame (21). The tray lifting device (22) is used to lift the tray (1a) from the tray conveying device (3) into the tray storage frame (21) or to lower the tray (1a) inside the tray storage frame (21) to the tray conveying device (3).

6. The fully automatic laser engraving and pad printing device according to claim 1, wherein: The laser engraving device (8) includes a handwheel screw lifting device (81) and a laser engraving machine (82) connected to the handwheel screw lifting device (81). Both of the product carriers (62) at the laser engraving station (54) are located below the laser engraving machine (82).

7. A fully automatic laser engraving and pad printing device according to claim 1, characterized in that: At the bottoms of the four ends of the cross-shaped rotating plate, guiding blocks (521) are provided. At both ends of the bottom of each guiding block (521), guiding holes are symmetrically provided. Below the pad printing station (56), a centering and guiding device is provided. The centering and guiding device includes a centering lifter (522) and a centering and guiding block (523) connected to the centering lifter (522). The centering and guiding block (523) is provided with guiding columns (524) adapted to the guiding holes. The guiding blocks (521) at the pad printing station (56) are located directly above the centering and guiding block (523). The upper ends of the guiding columns (524) are provided with guiding slopes, and the height of the guiding columns (524) is less than the depth of the guiding holes.

8. A fully automatic laser engraving and pad printing device according to claim 1, characterized in that: The product (1b) is a watch case. A plurality of connecting lugs (1b1) are provided on the inner ring of the watch case. The front product carrier (621) and the back product carrier (622) are respectively used for fitting and placing the front watch case and the back watch case. The front product carrier (621) and the back product carrier (622) are both provided with positioning carrier grooves (6211) adapted to the connecting lugs (1b1).

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