Plane material double-sided detection conveying device and UV printing equipment

Abstract

The utility model relates to a plane material double-face detection conveying device and UV printing equipment. The plane material double-face detection conveying device comprises a rack, two parallel first conveying belts, a first detection mechanism, a turnover mechanism, an inductor, a second conveying belt, a second detection mechanism and a feeding mechanism. The turnover mechanism achieves 180-degree turnover of materials through a driving motor, a rotating shaft, a vacuum suction cup and a connecting piece, and it is ensured that double-face detection is conducted efficiently. The feeding mechanism is provided with a linear module and a third conveying belt, qualified materials can be conveyed to the next procedure, and unqualified materials can be transferred to a waste area. In addition, the utility model further provides the UV printing equipment which is combined with the transition temporary storage mechanism, so that the production process is further optimized. The device has the advantages of high automation degree, high detection precision, improved production efficiency and the like, is suitable for the field of processing and detection of various plane materials such as fan blades, plastic plates, metal plates and the like, and has a wide application prospect.

Description

[Technical Field]

[0001] This utility model relates to the field of planar material processing technology, specifically to a planar material double-sided inspection and conveying device and a UV printing equipment. [Background Technology]

[0002] In the field of flat material processing (such as the manufacturing of fan blades, plastic sheets, and metal sheets), surface quality inspection is a key step in ensuring the pass rate of finished products. For example, when printing patterns, dustproof molds, and protective films on the surface of fan blades using UV printing, it is necessary to inspect the surface of the fan blades in advance for unevenness, defects at the edges, and other problems.

[0003] Traditional inspection methods mainly rely on manual visual inspection. Operators need to observe and screen the materials one by one from both sides. Since fan blades need to be inspected from both sides, manual inspection requires flipping the fan blades. On the one hand, the labor intensity of the workers is high, and on the other hand, the efficiency of manual inspection is low and it is easy to miss problems, resulting in a decrease in the yield rate.

[0004] In view of the above-mentioned technical problems, this utility model is proposed in this study. [Utility Model Content]

[0005] The technical problem to be solved by this utility model is to provide a double-sided inspection and conveying device for planar materials and a UV printing equipment. By setting a flipping mechanism, the product can be flipped, and double-sided inspection can be achieved through the first inspection mechanism and the second inspection mechanism. This solves the problems of low efficiency and missed inspections in manual inspection. After the inspection is completed, qualified products can be conveyed to the UV printing equipment for printing, which can improve production efficiency.

[0006] To solve the above-mentioned technical problems, this utility model proposes a double-sided inspection and conveying device for planar materials, comprising:

[0007] The frame is equipped with two parallel and synchronously running first conveyor belts, and a planar material bearing area is formed between the first conveyor belts for synchronously conveying the material to be processed.

[0008] The first testing unit, located on a frame on one side of the first conveyor belt, is used to test the surface quality of the front side of the material;

[0009] The flipping mechanism, located on the frame and between the rear of the two first conveyor belts, is used to flip the material 180° after the front inspection is completed and transport it to the next process.

[0010] Sensors, mounted on the frame, are used to detect when the material reaches the flipping position of the flipping mechanism;

[0011] The second conveyor belt, located on the frame and at the rear end of the first conveyor belt, is used to receive and transport the flipped material.

[0012] The second inspection unit, located above the second conveyor belt, is used to inspect the surface quality of the reverse side of materials that have passed inspection on the front side.

[0013] The feeding mechanism, located on the side of the frame, is used to transport materials that pass both-sided inspection to the next process and to transfer materials that fail inspection to the waste area. The feeding mechanism includes a linear module and a third conveyor belt. The third conveyor belt is located on the linear module slide and is driven by the linear module to connect with the end of the second conveyor belt or with the next process.

[0014] The double-sided inspection and conveying device for planar materials described above includes a flipping mechanism comprising:

[0015] The flipping assembly, located on the frame and between the rear of the two first conveyor belts, is used to flip the material 180° after the front inspection is completed.

[0016] The receiving plate is installed on the rear end of the two first conveyor belts and is used to receive the material after it has been flipped.

[0017] The material pusher assembly, located on the receiving plate, is used to push the flipped material onto the second conveyor belt.

[0018] The planar material double-sided inspection and conveying device described above includes a flipping assembly comprising:

[0019] A pair of support frames spaced apart on the frame;

[0020] A rotating shaft is located between the support frames and rotates in conjunction with the corresponding support frame.

[0021] A drive motor is mounted on one of the support frames, and the output shaft of the drive motor is connected to the rotating shaft to drive the rotating shaft to rotate.

[0022] Vacuum suction cups are used to hold the material after testing.

[0023] The connector is fixedly connected to the rotating shaft at one end and to the vacuum suction cup at the other end. It is used to drive the vacuum suction cup to rotate around the rotating shaft, thereby flipping the material and moving it onto the receiving plate.

[0024] The receiving plate is provided with a clearance opening to avoid the connection between the connector and the vacuum suction cup.

[0025] As described above, the planar material double-sided inspection and conveying device includes a pushing assembly comprising a left pushing block located on the left end of the receiving plate and a right pushing block located on the right end of the receiving plate. The pushing assembly also includes a left cylinder and a right cylinder that operate synchronously. The piston rod of the left cylinder is connected to the left pushing block, and the piston rod of the right cylinder is connected to the right pushing block.

[0026] As described above, the double-sided inspection and conveying device for planar materials includes a connecting member comprising an arc-shaped connecting rod and a straight connecting rod connected to one end of the arc-shaped connecting rod. One end of the straight connecting rod is fixedly connected to a rotating shaft, and one end of the arc-shaped connecting rod is rotatably connected to a vacuum suction cup. An elastic reset member is also provided between the vacuum suction cup and the arc-shaped connecting rod to allow the vacuum suction cup to return to its initial position after being rotated under force.

[0027] As described above, the planar material double-sided inspection and conveying device has a rotating block formed on the vacuum suction cup, and a rotating groove formed at the end of the arc-shaped connecting rod that rotates with the rotating block. The end of the arc-shaped connecting rod is provided with a connecting hole that passes through the rotating groove, and a connecting shaft is provided in the connecting hole. The rotating block and the connecting shaft rotate with each other. The elastic reset component includes two torsion springs located on both sides of the rotating block and two locking blocks corresponding to the torsion springs. Both the torsion springs and the locking blocks are sleeved on the shaft. One end of the torsion spring is engaged with the rotating block, and the other end of the torsion spring is engaged with the locking block. The locking block is fixed at the connecting hole.

[0028] As described above, the double-sided inspection and conveying device for planar materials has a locking block with an anti-rotation part that cooperates with the connecting hole to limit the rotation of the locking block.

[0029] This application also provides a UV printing apparatus, including a planar material double-sided inspection and conveying device as described above, a fourth conveyor belt that cooperates with the third conveyor belt to receive the material conveyed by the third conveyor belt, and a UV printer disposed on the fourth conveyor belt.

[0030] In the UV printing equipment described above, a transition storage mechanism is provided between the fourth conveyor belt and the third conveyor belt. The transition storage mechanism includes a fifth conveyor belt, a guide frame, and a drive assembly. The feed end of the fifth conveyor belt is connected to the feeding mechanism, and the discharge end is connected to the fourth conveyor belt. The drive assembly is mounted above the conveyor belt to drive the guide frame to move up and down. The guide frame includes several spaced guide strips and a connecting plate connecting the guide strips. A guide channel is formed between adjacent guide strips. A limit rod is provided at the end of the guide channel. The connecting plate is connected to the drive assembly. The feeding mechanism sequentially conveys the material to be printed into the guide channel.

[0031] As described above, the UV printing equipment includes a drive assembly comprising a gantry mounted on a fifth conveyor belt and a lifting cylinder mounted on the gantry, with a connecting plate connected to the piston rod of the lifting cylinder.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] 1. The planar material double-sided inspection and conveying device of this application can inspect both the front and back sides of the fan blades and remove unqualified products. Compared with the previous manual inspection method, it is faster and more efficient, reduces the labor intensity of workers, and improves production efficiency.

[0034] 2. The planar material double-sided inspection and conveying device of this application has higher accuracy than manual screening, preventing defective products from flowing into the next process.

[0035] 3. The UV printing equipment of this application, by adopting the above-mentioned double-sided inspection and conveying device for flat materials, can inspect the fan blades to screen out unqualified fan blades. Furthermore, by combining the UV printer and the transition storage mechanism with the products conveyed by the double-sided inspection and conveying device for flat materials, the production process is optimized, and production efficiency and product quality are improved. [Attached Image Description]

[0036] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0037] Figure 1 This is one of the structural schematic diagrams of this utility model.

[0038] Figure 2 This is the second structural schematic diagram of this utility model.

[0039] Figure 3 This is the third structural schematic diagram of this utility model.

[0040] Figure 4 This is one of the structural schematic diagrams of the sensor in this utility model.

[0041] Figure 5 yes Figure 4 A magnified structural diagram of point A in the middle.

[0042] Figure 6 This is the second schematic diagram of the sensor structure in this utility model.

[0043] Figure 7 yes Figure 6 A magnified structural diagram at point B in the middle.

[0044] Figure 8 This is a schematic diagram of the structure of the second detection mechanism in this utility model.

[0045] Figure 9 This is a schematic diagram of the suction cup structure in this utility model.

[0046] Figure 10 yes Figure 9 A magnified structural diagram at point C.

[0047] In the diagram: 1. Frame; 10. First detection mechanism; 11. Sensor; 12. Second conveyor belt; 13. Second detection mechanism; 14. First conveyor belt;

[0048] 3. Tilting mechanism; 30. Tilting assembly; 31. Support frame; 32. Rotating shaft; 33. Drive motor; 34. Vacuum suction cup; 35. Connecting piece; 350. Arc-shaped connecting rod; 351. Linear connecting rod; 36. Rotating block; 37. Rotating groove; 38. Connecting hole; 39. Connecting shaft;

[0049] 4. Feeding mechanism; 40. Linear module; 41. Third conveyor belt;

[0050] 5. Receiving plate;

[0051] 6. Pushing assembly; 60. Left push block; 61. Right push block; 62. Left cylinder; 63. Right cylinder;

[0052] 7. Elastic return element; 70. Torsion spring; 71. Locking block; 72. Anti-rotation part;

[0053] 8. Fourth conveyor belt; 80. UV printer;

[0054] 9. Temporary storage mechanism; 90. Fifth conveyor belt; 91. Guide frame; 910. Guide bar; 911. Connecting plate; 912. Guide channel; 913. Limit rod; 92. Drive assembly; 920. Gantry frame; 921. Lifting cylinder.

Detailed Implementation Methods

[0055] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0056] like Figure 1-10 As shown, the planar material double-sided inspection and conveying device of this utility model includes a frame 1, a first inspection mechanism 10, a flipping mechanism 3, a sensor 11, a second conveyor belt 12, a second inspection mechanism 13, and a feeding mechanism 4.

[0057] The frame 1 is equipped with two parallel and synchronously operating first conveyor belts 14, forming a planar material carrying area between the first conveyor belts 14 for synchronously conveying the material to be processed. A first detection mechanism 10 is located on one side of the first conveyor belt 14 on the frame 1 for detecting the surface quality of the material's front side. A flipping mechanism 3 is located on the frame 1 between the rear parts of the two first conveyor belts 14 for flipping the material 180° after front-side detection and conveying it to the next process. Figure 7As shown, sensor 11 is mounted on frame 1 and located between the rear of the two first conveyor belts 14 to detect when the material reaches the flipping position of flipping mechanism 3. Second conveyor belt 12 is mounted on frame 1 and located at the rear end of the first conveyor belt 14 to receive and transport the flipped material. Second detection mechanism 13 is located above the second conveyor belt 12 to detect the surface quality of the reverse side of the material that is qualified on the front. Feeding mechanism 4 is located on the side of frame 1 to transport the material that is qualified on both sides to the next process and to transfer the unqualified material to the waste area. Feeding mechanism 4 includes a linear module 40 and a third conveyor belt 41. The third conveyor belt 41 is mounted on the slide of linear module 40 and is driven by linear module 40 to dock with the end of the second conveyor belt 12 or with the next process.

[0058] like Figure 4 As shown, the sensor 11 can also be located above the flipping position of the flipping mechanism 3. A fixed rod is set on the frame 1, with the top of the fixed rod extending above the flipping position. The sensor 11 is then set on the fixed rod to detect whether the material has reached the flipping position.

[0059] In this embodiment, the material can be fan blades, sheet wood, or plastic sheets, etc. The following example uses fan blades. During testing, the fan blades are placed on the input end of the first conveyor belt 14 by manual labor or mechanical equipment. Since there are two first conveyor belts 14, the fan blades are mounted on both first conveyor belts 14. The two first conveyor belts 14 synchronously transport the fan blades forward. During transport, the fan blades pass through the first detection mechanism 10. The first detection mechanism 10 identifies whether the front of the fan blade meets the standards, such as whether the surface is uneven or the edges are defective. After the detection is completed, a signal is transmitted to the controller (not shown in this application) to record the fan blade. After the blades are inspected for defects, the first conveyor belt 14 continues to transport the blades forward. When the sensor 11 detects a blade, the flipping mechanism 3 holds it in place, flips it over, and transports it to the second conveyor belt 12. If the blade is defective, the second conveyor belt 12 directly transports it to the third conveyor belt 41, which then transports it to the waste area. If the front of the blade is acceptable, the second inspection mechanism 13 continues to inspect the back of the blade. If acceptable, it is transported to the third conveyor belt 41, which is then driven by the linear module 40 to move and transport the blade to the next process. Similarly, if the back of the blade is also unacceptable, the third conveyor belt 41 transports it to the waste area. It should also be noted that the third conveyor belt 41 can rotate in both directions; when transporting defective blades, it can simply transport them backward to the waste area.

[0060] In this embodiment, the first detection mechanism 10 and the second detection mechanism 13 can use image recognition to collect data of the fan blades and determine whether the surface of the fan blades meets the standard. For example, data can be collected by a CCD camera. The controller can be a PLC controller, which can be set in the frame 1. The way it works in conjunction with the sensor 11 is a conventional technology, which will not be described in detail in this application.

[0061] As can be seen from the above, this application can inspect both the front and back of the fan blades and remove defective products. Compared to the previous manual inspection method, it is faster and more efficient, reduces the labor intensity of workers, and improves production efficiency. In addition, compared to manual screening, the accuracy is higher, preventing defective products from flowing into the next process.

[0062] like Figures 5 to 10 As shown, as a further embodiment, the flipping mechanism 3 includes a flipping component 30, a receiving plate 5, and a pushing component 6. The flipping component 30 is mounted on the frame 1 and located between the rear ends of the two first conveyor belts 14, used to flip the material 180° after front-side inspection. The receiving plate 5 is mounted on the rear ends of the two first conveyor belts 14 to receive the flipped material. The pushing component 6 is mounted on the receiving plate 5 and used to push the flipped material onto the second conveyor belt 12.

[0063] The flipping assembly 30 includes a support frame 31, a rotating shaft 32, a drive motor 33, a vacuum suction cup 34, and a connector 35. The support frames 31 are arranged in pairs, spaced apart on the frame 1, and located in the area between the two first conveyor belts 14. The rotating shaft 32 is located between the support frames 31 and rotates in cooperation with the corresponding support frame 31. The drive motor 33 is located on one of the support frames 31, and its output shaft is connected to the rotating shaft 32 to drive the rotating shaft 32 to rotate. The vacuum suction cup 34 is used to hold the material after inspection. One end of the connector 35 is fixedly connected to the rotating shaft 32, and the other end is connected to the vacuum suction cup 34, driving the vacuum suction cup 34 to rotate around the rotating shaft 32, thereby flipping the material and moving it onto the receiving plate 5. The receiving plate 5 has a clearance opening for avoiding the connection 35 and the vacuum suction cup 34. During the flipping process, the drive motor 33 drives the rotating shaft 32 to rotate, which in turn drives the connector 35 to rotate. The connector 35 then drives the vacuum suction cup 34 to adhere to the front of the fan blade. After the fan blade is adhered, the drive motor 33 drives the rotating shaft 32 to rotate in the opposite direction, thereby transporting the fan blade to the receiving plate 5. Since the vacuum suction cup 34 is located at the bottom of the fan blade after flipping, the receiving plate 5 is provided with a clearance opening to avoid the connector 35 and the vacuum suction cup 34.

[0064] like Figure 7As shown, as a further embodiment, the material pushing assembly 6 includes a left push block 60 disposed on the left end of the receiving plate 5 and a right push block 61 disposed on the right end of the receiving plate 5. The material pushing assembly 6 also includes a left cylinder 62 and a right cylinder 63 that operate synchronously. The piston rod of the left cylinder 62 is connected to the left push block 60, and the piston rod of the right cylinder 63 is connected to the right push block 61. After the flipping assembly 30 flips the fan blade onto the receiving plate 5, the pushing assembly 6 pushes the fan blade onto the second conveyor belt 12. Specifically, after the fan blade is placed on the receiving plate 5, the left cylinder 62 and the right cylinder 63 are simultaneously activated, driving the left push block 60 and the right push block 61 to push the fan blade onto the second conveyor belt 12. Furthermore, the shapes of the left push block 60 and the right push block 61 can be adjusted according to the actual product shape. For example, in this embodiment, the left push block 60 can be provided with an arc-shaped groove to accommodate the arc-shaped end of the fan blade, and the right push block 61 is correspondingly matched to the shape of the right end of the fan blade, thus making the pushing of the fan blade smoother. Additionally, the left cylinder 62 and the right cylinder 63 can be installed on the first conveyor belt 14 or on the receiving plate 5.

[0065] like Figure 9 , Figure 10 As shown, as a further embodiment, the connector 35 includes an arc-shaped connecting rod 350 and a straight connecting rod 351 connected to one end of it. One end of the straight connecting rod 351 is fixedly connected to the rotating shaft 32, and one end of the arc-shaped connecting rod 350 is rotatably connected to the vacuum suction cup 34. An elastic reset member 7 is also provided between the vacuum suction cup 34 and the arc-shaped connecting rod 350 to allow the vacuum suction cup 34 to return to its initial position after being rotated under force. To facilitate flipping, in this embodiment, the arc of the arc-shaped connecting rod 350 is set between 80° and 100°, preferably 90°. When the vacuum suction cup 34 just picks up the fan blade, the fan blade forms a 90° angle with the straight connecting rod 351. The vacuum suction cup 34 is positioned parallel to the fan blade, allowing for a more secure suction. The vacuum suction cup 34 is rotatably connected to the arc-shaped connecting rod 350, and an elastic reset element 7 is included. This is because when releasing the fan blade onto the receiving plate 5, due to the thickness of the fan blade, the receiving plate 5 being higher than the conveying plane of the first conveyor belt 14, and assembly errors, the fan blade may not be perfectly parallel to the plane of the receiving plate after rotating 180°. With the elastic reset element 7, even after rotating 180°, although the fan blade may not be parallel to the receiving plate 5, contact with the receiving plate 5 will cause the vacuum suction cup 34 to rotate on the arc-shaped connecting rod 350, thus making the fan blade parallel to the receiving plate 5, facilitating placement of the fan blade on the receiving plate 5. Additionally, to prevent scratches caused by contact between the fan blade and the receiving plate 5, a silicone pad (not shown in the figure) can be placed in the area where the insert plate 5 contacts the fan blade.

[0066] like Figure 9 , Figure 10 As shown, as a further embodiment, a rotating block 36 is formed on the vacuum suction cup 34, and a rotating groove 37 is formed at the end of the arc-shaped connecting rod 350 to rotatably engage with the rotating block 36. A connecting hole 38 penetrating the rotating groove 37 is provided at the end of the arc-shaped connecting rod 350, and a connecting shaft 39 is provided in the connecting hole 38. The rotating block 36 rotatably engages with the connecting shaft 39. The elastic reset member 7 includes two torsion springs 70 located on both sides of the rotating block 36 and two locking blocks 71 corresponding to the torsion springs 70. Both the locking block 71 and the locking block 72 are sleeved on the shaft. One end of the torsion spring 70 is engaged with the rotating block 36, and the other end of the torsion spring 70 is engaged with the locking block 71. The locking block 71 is fixed at the connecting hole 38. In this embodiment, the front end of the connecting shaft 39 can be formed with a threaded section (not shown in the figure), and a nut that mates with its thread is provided. The rear end of the connecting shaft 39 can be set as a hexagonal head, and one side of the corresponding arc-shaped connecting rod 350 is set as a hexagonal hole. In this way, the connecting shaft 39 can be locked after passing through the connecting hole 38. When installing the torsion spring 70 and the locking block 71, first insert the torsion spring 70 into the connecting hole 38, then rotate the locking block 71 into the connecting hole 38, and finally align the rotating block 36 on the vacuum suction cup 34 with the rotating groove 37, and then insert it into the connecting shaft 39 for locking. To prevent the locking block 71 from rotating, the locking block 71 is provided with an anti-rotation part 72 that cooperates with the connecting hole 38 to limit the rotation of the locking block 71. After setting the torsion spring 70 and the locking block 71, after the vacuum suction cup 34 rotates on the connecting shaft 39 via the rotating block 36, since the locking block 71 is fixed in the connecting hole 38, and the torsion spring 70 is engaged with the locking block 71 and the rotating block 36, the rotating block 36 will be driven to reset, thereby resetting the vacuum suction cup 34.

[0067] like Figures 1 to 3 As shown, this application also provides a UV printing device, including a double-sided inspection and conveying device for planar materials as described above, a fourth conveyor belt 8 that cooperates with the third conveyor belt 41 to receive the material conveyed by the third conveyor belt 41, and a UV printer 80 disposed on the fourth conveyor belt 8. The UV printer 80 can print on planar products, such as printing patterns, protective films, and dustproof films on fan blades. Before printing, a layer of white primer is generally applied to the fan blades to better display the printed colors. If the primer sprayed on the fan blades is damaged, or if the surface is uneven or scratched, it will affect the final product.

[0068] The UV printing equipment of this application, by adopting the aforementioned double-sided inspection and conveying device for flat materials, can inspect the fan blades to screen out unqualified fan blades, such as those with scratches on the surface of the fan blades or damage to the primer, thus preventing unqualified fan blades from affecting the printing quality.

[0069] A transition storage mechanism 9 is also provided between the fourth conveyor belt 8 and the third conveyor belt 41. The transition storage mechanism 9 includes a fifth conveyor belt 90, a guide frame 91, and a drive assembly 92. The feeding end of the fifth conveyor belt 90 is connected to the feeding mechanism 4, and the discharging end is connected to the fourth conveyor belt 8. The drive assembly 92 is mounted above the conveyor belt to drive the guide frame 91 to move up and down. The guide frame 91 includes several spaced guide bars 910 and a connecting plate 911 connecting several guide bars 910. A guide channel 912 is formed between adjacent guide bars 910. A limiting rod 913 is provided at the end of the guide channel 912. The connecting plate 911 is connected to the drive assembly 92. The feeding mechanism 4 sequentially conveys the material to be printed into the guide channel 912 from one side. In this application, by setting up a transition storage mechanism 9, when the UV printing equipment is working, the feeding mechanism 4 transports the fan blades one by one to the guide channel 912 for arrangement. After the arrangement is complete, the UV printing equipment prints the previous batch of fan blades. Subsequently, the drive assembly 92 drives the guide frame 91 to rise, releasing the restriction on the fan blades. The fan blades can then be transported by the fifth conveyor belt 90 to the fourth conveyor belt 8 in the printing equipment. The drive assembly 92 includes a gantry frame 920 mounted on the fifth conveyor belt 90 and a lifting cylinder 921 mounted on the gantry frame 920. The connecting plate 911 is connected to the piston rod of the lifting cylinder 921. In addition, the connecting plate 911 is provided with several guide rods (not shown in the figure) that slide in cooperation with the gantry frame 920. Furthermore, when the guide frame 91 limits the fan blades, its bottom does not contact the fifth conveyor belt 90.

Claims

1. A flat material double-sided inspection conveying device, characterized by include: The frame (1) is provided with two parallel and synchronously running first conveyor belts (14), and a planar material bearing area is formed between the first conveyor belts (14) for synchronously conveying the material to be processed; The first testing unit (10) is located on the frame (1) on one side of the first conveyor belt (14) and is used to test the surface quality of the front side of the material. The flipping mechanism (3) is located on the frame (1) and between the rear of the two first conveyor belts (14), and is used to flip the material 180° after the front inspection is completed and transport it to the next process. Sensor (11), mounted on frame (1), is used to detect when the material reaches the flipping position of flipping mechanism (3); The second conveyor belt (12) is mounted on the frame (1) and located at the rear end of the first conveyor belt (14), and is used to receive and transport the flipped material. The second inspection unit (13) is located above the second conveyor belt (12) and is used to inspect the surface quality of the reverse side of the material that is qualified on the front side. The feeding mechanism (4) is located on the side of the frame (1) and is used to transport materials that pass both-sided inspection to the next process and transfer materials that fail inspection to the waste area. The feeding mechanism (4) includes a linear module (40) and a third conveyor belt (41). The third conveyor belt (41) is located on the slide of the linear module (40) and is driven by the linear module (40) to connect with the end of the second conveyor belt (12) or with the next process.

2. The flat material double-sided inspection conveyor according to claim 1, characterized in that The flipping mechanism (3) includes: A flipping assembly (30) is mounted on the frame (1) and located between the rear of the two first conveyor belts (14) for flipping the material 180° after the front inspection is completed. The receiving plate (5) is mounted on the rear end of the two first conveyor belts (14) and is used to receive the material after it has been flipped. The material pushing assembly (6) is located on the receiving plate (5) and is used to push the flipped material onto the second conveyor belt (12).

3. The flat material double-sided inspection conveyor of claim 2, wherein The flip component (30) includes: A pair of support frames (31) spaced apart on the frame (1); A rotating shaft (32) is provided between the support frames (31) and rotates in cooperation with the corresponding support frame (31); A drive motor (33) is mounted on one of the support frames (31), and the output shaft of the drive motor (33) is connected to the rotating shaft (32) to drive the rotating shaft (32) to rotate. Vacuum suction cup (34) is used to hold the material after testing; The connector (35) is fixedly connected at one end to the rotating shaft (32) and at the other end to the vacuum suction cup (34), which is used to drive the vacuum suction cup (34) to rotate around the rotating shaft (32), thereby flipping the material and moving it onto the receiving plate (5); The receiving plate (5) is provided with a clearance opening for avoiding the connection piece (35) and the vacuum suction cup (34).

4. The flat material double-sided inspection conveyor of claim 2, wherein The material pushing assembly (6) includes a left push block (60) located on the left end of the receiving plate (5) and a right push block (61) located on the right end of the receiving plate (5). The material pushing assembly (6) also includes a left cylinder (62) and a right cylinder (63) that operate synchronously. The piston rod of the left cylinder (62) is connected to the left push block (60), and the piston rod of the right cylinder (63) is connected to the right push block (61).

5. The flat material double-sided inspection conveyor of claim 3, wherein The connector (35) includes an arc-shaped connecting rod (350) and a straight connecting rod (351) connected to one end of it. One end of the straight connecting rod (351) is fixedly connected to the rotating shaft (32), and one end of the arc-shaped connecting rod (350) is rotatably connected to the vacuum suction cup (34). An elastic reset member (7) is also provided between the vacuum suction cup (34) and the arc-shaped connecting rod (350) to reset the vacuum suction cup (34) to its initial position after being rotated under force.

6. The flat material double-sided inspection conveyor of claim 5, wherein A rotating block (36) is formed on the vacuum suction cup (34). The end of the arc-shaped connecting rod (350) is formed with a rotating groove (37) that rotates with the rotating block (36). The end of the arc-shaped connecting rod (350) is provided with a connecting hole (38) that passes through the rotating groove (37). A connecting shaft (39) is provided in the connecting hole (38). The rotating block (36) and the connecting shaft (39) rotate with each other. The elastic reset member (7) includes two torsion springs (70) located on both sides of the rotating block (36) and two locking blocks (71) corresponding to the torsion springs (70). The torsion springs (70) and the locking blocks (71) are both sleeved on the shaft. One end of the torsion spring (70) is engaged with the rotating block (36), and the other end of the torsion spring (70) is engaged with the locking block (71). The locking block (71) is fixed at the connecting hole (38).

7. The flat material double-sided inspection conveyor of claim 6, wherein, The locking block (71) is provided with an anti-rotation part (72) that cooperates with the connecting hole (38) to restrict the rotation of the locking block (71).

8. A UV printing apparatus characterized by The device includes a planar material double-sided inspection and conveying device according to any one of claims 1 to 7, and also includes a fourth conveyor belt (8) that cooperates with the third conveyor belt (41) to receive the material conveyed by the third conveyor belt (41) and a UV printer (80) disposed on the fourth conveyor belt (8).

9. A UV printing apparatus according to claim 8, characterized in that A transition storage mechanism (9) is provided between the fourth conveyor belt (8) and the third conveyor belt (41). The transition storage mechanism (9) includes a fifth conveyor belt (90), a guide frame (91), and a drive assembly (92). The feed end of the fifth conveyor belt (90) is connected to the feeding mechanism (4), and the discharge end is connected to the fourth conveyor belt (8). The drive assembly (92) is mounted above the conveyor belt to drive the guide frame (91) to move up and down. The guide frame (91) includes several spaced guide bars (910) and a connecting plate (911) connecting several guide bars (910). A guide channel (912) is formed between adjacent guide bars (910). A limit rod (913) is provided at the end of the guide channel (912). The connecting plate (911) is connected to the drive assembly (92). The feeding mechanism (4) sequentially transports the material to be printed into the guide channel (912) from one side.

10. The UV printing apparatus of claim 9, wherein The drive assembly (92) includes a gantry (920) mounted on the fifth conveyor belt (90) and a lifting cylinder (921) mounted on the gantry (920), with a connecting plate (911) connected to the piston rod of the lifting cylinder (921).

Images