Material turnover device for UV printing materials and UV printing equipment

Abstract

The invention relates to the field of UV printing equipment, in particular to a material turnover device for UV printing materials and UV printing equipment thereof.The material turnover device for the UV printing materials comprises a rack, a lifting mechanism, a turnover mechanism, a clamping mechanism, a positioning mechanism, a first conveying belt and a second conveying belt; and the turnover mechanism drives the clamping mechanism to rotate so as to turn over the materials, the materials are conveyed through the first conveying belt to pass through the UV printing equipment again, the double-face surfaces of the materials are printed, positioning is accurate through automatic turnover, and the printing efficiency of the materials can be effectively improved. Therefore, the problems that the double-sided printing operation of the fan blade in the UV printing equipment is inconvenient, the turned-over material is not accurately positioned manually, and the printing efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the field of UV printing equipment, and particularly to a material flipping device for UV printing materials and a UV printing equipment.

Background Art

[0002] In modern industrial production, especially when the UV printing process is applied to the surface spraying treatment of fan blades, reducing manual intervention to improve production efficiency and product quality is the key development direction of the industry. The traditional UV printing process usually relies on manual operation to flip the fan blades for double-sided printing, and cannot achieve automatic flipping and double-sided printing, resulting in low production efficiency and inability to meet the needs of large-scale production. This not only increases production costs, but also easily leads to operation errors, such as uneven spraying and skewed patterns, which in turn affect the spraying quality and production efficiency of the fan blades. In addition, the existing flipping devices often cannot accurately control the position of the material during the flipping process, resulting in inaccurate positions of the flipped materials and affecting the quality and efficiency of subsequent processing.

[0003] In view of the problems of inconvenient operation, inaccurate positioning, and low printing efficiency of the above-mentioned traditional flipping devices, the present invention is specifically studied and proposed.

Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a material flipping device for UV printing materials and its UV printing equipment, including a frame, a lifting mechanism, a flipping mechanism, a clamping mechanism, a positioning mechanism, a first conveyor belt and a second conveyor belt. The clamping mechanism is rotationally connected to the flipping mechanism, and the flipping mechanism drives the clamping mechanism to rotate so as to flip the material. Cooperating with the first conveyor belt to convey the material and passing it through the UV printing equipment again for double-sided surface printing of the material can effectively improve the material printing efficiency. Thus, the problems of inconvenient operation, inaccurate positioning of the manually flipped material, and low printing efficiency in the double-sided printing of fan blades in the UV printing equipment are solved.

[0005] To solve the above technical problems, the present invention provides a material turning device for UV printing materials. The material turning device cooperates with a UV printing device. The UV printing device includes a first conveyor belt and a UV printing mechanism disposed above the first conveyor belt. The material turning device includes a frame for supporting the entire material turning device, and a lifting mechanism disposed on the frame for lifting the material to a preset height. The lifting mechanism includes a support frame disposed on the frame, and a cross beam slidably engaged with the support frame in the vertical direction. The lifting mechanism further includes a lifting component disposed on the support frame for driving the cross beam to move up and down. The material turning device further includes a turning mechanism disposed on the cross beam for turning the material, a clamping mechanism rotatably engaged with the cross beam for clamping the material, and a positioning mechanism disposed in the material turning device for detecting whether the material enters the working area of the clamping mechanism. The clamping mechanism is used for clamping the material conveyed in the first conveyor belt and turning it so that the material can cooperate with the UV printing mechanism again through the first conveyor belt. The clamping mechanism is connected to the turning mechanism, and the turning mechanism drives the clamping mechanism to rotate so as to turn the material. A second conveyor belt is further disposed below the material turning device, which cooperates with the first conveyor belt to convey the printed material into the next process.

[0006] As for the above-mentioned material turning device for UV printing materials, the lifting mechanism includes a support frame disposed on the frame, and a cross beam slidably engaged with the support frame in the vertical direction. The lifting mechanism further includes a lifting component disposed on the support frame for driving the cross beam to move up and down.

[0007] As for the above-mentioned material turning device for UV printing materials, a plurality of clamping mechanisms are provided and arranged side by side on the cross beam, and a plurality of the clamping mechanisms are all connected to the turning mechanism, and the turning mechanism drives the plurality of clamping mechanisms to rotate synchronously so as to turn the material.

[0008] As for the above-mentioned material turning device for UV printing materials, each clamping mechanism includes a pair of clamping arms for clamping the material and a first driving component for driving the clamping arms to move. The clamping mechanism further includes a rotating shaft rotatably engaged with the cross beam and a connecting seat fixed to one end of the rotating shaft. The first driving component and the clamping arms are disposed on the connecting seat. A gear portion is formed at the other end of the rotating shaft. The turning mechanism drives the gear portion to rotate so as to drive the entire clamping mechanism to turn.

[0009] As for the above-mentioned material turning device for UV printing materials, the turning mechanism includes a rack slidably engaged with the cross beam and a second driving component disposed on the cross beam for driving the rack to reciprocate along the length direction of the cross beam. The rack is engaged with the corresponding gear portion.

[0010] As for the material turnover device for a UV printing material as described above, the second driving component includes a motor and a transmission gear. The transmission gear is arranged on the output shaft of the motor and meshes with the rack. The motor drives the transmission gear to rotate to drive the rack to reciprocate along the length direction of the cross beam, and further drives the gear part to rotate to realize the turnover of the clamping mechanism.

[0011] As for the material turnover device for a UV printing material as described above, the second conveyor belt is lower than the first conveyor belt to form a height difference that can accommodate the clamping mechanism to clamp the material for turnover.

[0012] As for the material turnover device for a UV printing material as described above, the positioning mechanism includes a sensor arranged on the clamping mechanism. The sensor is used to collect the material position signal and is electrically connected to the material turnover device. The sensor can judge whether the material reaches the working area of the clamping mechanism, and after confirming that the material reaches the working area, start the clamping action of the clamping mechanism.

[0013] As for the material turnover device for a UV printing material as described above, the lifting assembly includes guide rods that are respectively slidably matched with both ends of the cross beam, and two lead screws that are respectively threadedly matched with the left and right ends of the cross beam. It also includes a third driving component arranged on one side of the support frame to drive the two lead screws to rotate synchronously and then drive the cross beam to move up and down. The upper end of the guide rod is fixedly connected to the upper part of the support frame, the lower end of the guide rod is fixedly connected to the lower part of the frame, the upper end of the lead screw is rotatably matched with the upper part of the support frame, and the lower end of the lead screw is rotatably matched with the lower part of the frame.

[0014] This application also relates to a UV printing device, including a UV printing device and the above-mentioned material turnover device. The UV printing device includes a first conveyor belt and a UV printing mechanism arranged on the first conveyor belt. The material turnover device is used to turnover the material conveyed by the first conveyor belt so that the material can cooperate with the UV printing mechanism again through the first conveyor belt to complete the multi-sided printing of the material.

[0015] Compared with the prior art, the material turnover device for a UV printing material of the present invention has the following advantages:

[0016] 1. In this application, the close cooperation of the clamping mechanism, the turnover mechanism and the lifting mechanism enables the clamping mechanism to clamp the material and turnover it by 180 degrees, and accurately fall back on the first conveyor belt to continue to complete the printing of the other side. The structural design is stable and reliable, effectively improving the quality and efficiency of the double-sided printing of the material, and saving labor costs at the same time.

[0017] 2. In the present application, the gear parts in each clamping mechanism are respectively meshed and cooperated with the rack in the flipping mechanism, and the clamping mechanism and the material clamped by it are synchronously driven by the second driving component in the flipping mechanism to flip. This cooperation method reduces manual intervention and ensures that multiple materials are flipped accurately at the same time, with accurate flipping and improved working efficiency during the printing process.

[0018] 3. In the present application, the positioning mechanism uses sensor technology to ensure that the material is accurately grasped by the clamping mechanism at a predetermined position by real-time monitoring of the material position, thereby realizing efficient and accurate automated operation.

Description of the Drawings

[0019] The following further describes in detail the specific embodiments of the present invention with reference to the drawings, where:

[0020] Figure 1 is one of the structural schematic diagrams of the UV printing device in the present invention;

[0021] Figure 2 is the second structural schematic diagram of the UV printing device in the present invention;

[0022] Figure 3 is a partial schematic diagram of the material flipping device in the present invention;

[0023] Figure 4 is the present invention Figure 1 Partial enlarged view of A in;

[0024] Figure 5 is the present invention Figure 1 Partial enlarged view of B in;

[0025] Figure 6 is the present invention Figure 3 Partial enlarged view of C in;

[0026] Figure 7 is the structural schematic diagram of the clamping mechanism in the material flipping device in the present invention;

[0027] Figure 8 is the third structural schematic diagram of the material flipping device in the present invention;

[0028] Figure 9 is the present invention Figure 8 Partial enlarged view of D in.

[0029] In the figure:

[0030] 1. Frame;

[0031] 2. Lifting mechanism; 21. Support frame; 22. Cross beam; 221. Limit groove; 222. Flange portion; 23. Lifting assembly; 231. Guide rod; 232. Lead screw; 233. Third driving component; 241. Synchronous pulley; 242. Synchronous belt;

[0032] 3. Tipping mechanism; 31. Rack; 32. Second driving component; 321. Motor; 322. Driving gear;

[0033] 4. Clamping mechanism; 41. Clamping arm; 42. First driving component; 43. Rotating shaft; 44. Connecting seat; 45. Gear portion; 46. Anti-slip portion;

[0034] 5. Positioning mechanism; 51. Sensor;

[0035] 61. First conveyor belt; 62. Second conveyor belt;

[0036] 7. UV printing device; 71. UV printing mechanism; 72. Material tipping device.

Detailed implementation manners

[0037] The following will describe the implementation manners of the present invention in detail with reference to the accompanying drawings.

[0038] As Figures 1 to 9 shown, a material tipping device for UV printing materials of the present invention, the material tipping device 72 cooperates with the UV printing device 7. The UV printing device 7 includes a first conveyor belt 61 and a UV printing mechanism 71 disposed above the first conveyor belt 61. It is characterized in that the material tipping device 72 includes a frame 1 for supporting the entire material tipping device 72, a lifting mechanism 2 disposed on the frame 1 for lifting the material to a preset height, a tipping mechanism 3 disposed on the lifting mechanism for tipping the material, and a clamping mechanism 4 disposed on the lifting mechanism for clamping the material. The material tipping device 72 further includes a positioning mechanism 5 disposed on the clamping mechanism 4 for detecting whether the material enters the working area of the clamping mechanism 4. The clamping mechanism 4 is connected to the tipping mechanism 3, and the tipping mechanism 3 drives the clamping mechanism 4 to rotate to tip the material. The clamping mechanism 4 clamps the material conveyed by the first conveyor belt 61 and tips it so that the material cooperates with the UV printing mechanism 71 again through the first conveyor belt 61. A second conveyor belt 62 is further disposed below the material tipping device 72, which cooperates with the first conveyor belt 61 to convey the printed material into the next process.

[0039] The material enters the UV printing device and is first printed on one side by the UV printing device. It is carried on the first conveyor belt 61 and transported into the material flipping device 72. The material flipping device 72 lifts the material to an appropriate height through the lifting mechanism 2, then fixes the material using the clamping mechanism 4, and flips it 180 degrees through the flipping mechanism 3. The flipping mechanism 3 can drive the clamping mechanism 4 to rotate within an angle range of 0 degrees to 360 degrees. The flipped material can be re-placed on the first conveyor belt 61 of the UV printing device 7 to continue UV printing on the surface of the flipped material. The positioning mechanism 5 ensures that the material accurately enters the working area of the clamping mechanism 4 to ensure the smooth progress of the flipping process. As Figure 9 shown, specifically, the clamping mechanism 4 is located at the end of the first conveyor belt 61, and the clamping arms 41 are in an open state to form an area for accommodating the material. When the material is transported by the first conveyor belt 61 to the working area to be clamped, a part of the material protrudes beyond the edge of the first conveyor belt 61, but it does not affect the overall balance of the material. At this time, the conveyor belt continues to support the material until the clamping mechanism 4 clamps the material and lifts the material upward from the first conveyor belt 61 through the lifting assembly 23, and then performs the flipping operation.

[0040] Among them, the material flipping device 72 also includes a controller (not shown in the figure) for controlling the operation of each mechanism. The set height in the lifting mechanism 2 can be preset by operating the controller according to the space required for material flipping.

[0041] The material flipping device 72 involved in this application cooperates with the UV printing device 7 for printing, and is not limited to only double-sided printing on the front and back sides of the fan blades. It is also applicable to the process treatment of printing on the surfaces of various plastic parts, plates, etc. When multiple surfaces need to be printed, the flipping mechanism 3 can control the material to be flipped multiple times and cooperate with the UV printing device 7 to complete the printing of multiple surfaces of the material.

[0042] Among them, common UV printing devices mainly include components such as print heads, ink supply systems, conveyor belts, curing lamps, and motion guides. Among them, the print head is responsible for spraying ink onto the substrate to form a pattern and is composed of countless tiny nozzles; the curing lamp is used to cure the ink. By emitting ultraviolet light of a specific wavelength, the ink is quickly cured to avoid the ink contacting dust and affecting the firmness of the pattern; the conveyor belt is responsible for transporting the substrate to the printing position and removing it from the device after printing. This UV printing device belongs to the content of the prior art, so it will not be elaborated too much.

[0043] The material is conveyed out from the UV printing device 7 on the first conveyor belt 61. After the printing on one side is completed, it is turned over by the material turning device 72. Subsequently, the material is sent back to the UV printing device 7 in cooperation with the first conveyor belt 61 again to complete the double-sided printing of the material. This process is achieved through the close cooperation of the added clamping mechanism 4, turning mechanism 3, and lifting mechanism 2. The clamping mechanism 4 ensures stable clamping of the material during the turning process. The turning mechanism 3 completes an accurate 180-degree turn. The lifting mechanism 2 adjusts the height of the material when needed to ensure that it accurately falls back on the first conveyor belt 61 to continue the printing on the other side. This structural design is stable and reliable, effectively improving the quality and efficiency of the double-sided printing of the material, avoiding the problem of inaccurate positioning of the turned-over material by manual labor, and saving labor costs at the same time.

[0044] As Figures 1 to 9 shown, as a further technical solution of the present application, a plurality of clamping mechanisms 4 are provided and arranged side by side on the cross beam 22, and several clamping mechanisms 4 are all connected to the turning mechanism 3, and the turning mechanism 3 drives several clamping mechanisms 4 to rotate synchronously to turn over the material. In this technical solution, several turning mechanisms 3 can cooperate with the clamping mechanisms 4. Each clamping mechanism 4 is connected to the turning mechanism 3, and the turning mechanism 3 provides power to make all the clamping mechanisms 4 rotate synchronously, so as to realize the turning of the material, ensuring the stability of the material during the turning process and improving the operation efficiency.

[0045] As Figures 1 to 9 shown, as a further technical solution of the present application, each clamping mechanism 4 includes a pair of clamping arms 41 for clamping the material and a first driving component 42 for driving the clamping arms 41 to move. The clamping mechanism 4 further includes a rotating shaft 43 rotatably matched with the cross beam 22 and a connecting seat 44 fixed to one end of the rotating shaft 43. The first driving component 42 and the clamping arms 41 are arranged on the connecting seat 44. A gear portion 45 is formed at the other end of the rotating shaft 43. The turning mechanism 3 drives the gear portion 45 to rotate to drive the entire clamping mechanism 4 to turn over. The turning mechanism 3 includes a rack 31 slidably matched with the cross beam 22 and a second driving component 32 arranged on the cross beam 22 for driving the rack 31 to reciprocate along the length direction of the cross beam 22. The rack 31 meshes with the corresponding gear portion 45.

[0046] Specifically, the clamping mechanism 4 is also provided with bearings. The outer shell of the bearing is fixedly connected to the cross beam 22. The rotating shaft 43 is arranged in the bearing, and the rotating shaft 43 rotates in cooperation with the bearing to reduce the friction between the rotating shaft 43 and the bearing and extend the service life.

[0047] The first driving component 42 can adopt a transmission mode of cooperating a cylinder with a push rod. The cylinder is fixed on the connecting seat 44, the push rod is connected with the clamping arm 41, and the push rod is driven by the cylinder to perform a linear motion to drive the clamping arm 41 to grab and lower materials. In addition, the first driving component 42 can also adopt a transmission mode of cooperating a motor 321 with a transmission wheel. It should be noted that the above driving modes using a cylinder and a motor 321 are all well-known driving modes to those skilled in the art, so they will not be further described herein.

[0048] In each clamping mechanism 4 of this technical solution, the gear part 45 is respectively meshed and cooperated with the rack 31 in the flipping mechanism 3. The second driving component 32 in the flipping mechanism 3 drives the rack 31 to reciprocate along the length direction of the cross beam 22, so as to drive the gear part 45 to rotate and thus drive the whole clamping mechanism 4 to flip, so that the clamping mechanism 4 and the materials clamped by it can be flipped synchronously. At the same time, the meshing and cooperation mode between the rack 31 track and the gear part 45 enables high flipping precision and will not cause position deviation. This structure is simple and stable, ensuring that multiple materials are flipped accurately at the same time, having the advantages of accurate flipping and accurate positioning, and improving the working efficiency of the printing process at the same time.

[0049] As Figures 1 to 9 shown, as a further technical solution of this application, a limiting groove 221 is formed on the cross beam 22, and the rack 31 is slidably cooperated with the limiting groove 221. The two sides of the limiting groove 221 bulge inward to form flange parts 222. The rack 31 is adapted to the size of the large limiting groove 221 and is embedded in the limiting groove 221. The rack 31 is restricted in the limiting groove by the flange parts 222 and slides left and right along the length direction of the limiting groove in the limiting groove. The length of the limiting groove is greater than the length of the rack 31. Specifically, the second driving component 32 is fixedly arranged on the cross beam 22 and includes a motor 321 and a transmission gear 322. The transmission gear 322 is arranged on the output shaft of the motor 321 and meshes with the rack 31. The motor 321 drives the transmission gear 322 to rotate to drive the rack 31 to reciprocate along the length direction of the cross beam 22, and further drives the gear part 45 to rotate to realize the flipping of the clamping mechanism 4. In this technical solution, the motor 321 drives the transmission gear 322 to rotate to drive the rack 31 to cooperate with the limiting groove and move relative to the cross beam 22. The sliding stroke of the rack 31 corresponds to the meshing stroke between the rack 31 and the gear part 45 in the clamping mechanism 4, so that the driving part structure of the flipping mechanism 3 is more concise and effective.

[0050] As Figures 1 to 9As shown in the figure, as a further technical solution of the present application, the positioning mechanism 5 includes a sensor 51 provided on the clamping mechanism 4. The sensor 51 is used to collect the material position signal and is electrically connected to the material turning device 72. The sensor 51 can judge whether the material reaches the working area of the clamping mechanism 4, and after confirming that the material reaches the working area, start the clamping action of the clamping mechanism 4. The sensor 51 can adopt a laser sensor 51. The laser sensor 51 is arranged on the contact surface between the clamping arm 41 and the material. By emitting laser and receiving scattered light, it measures the distance change of the opening of the clamping arm 41 to judge whether an object enters the working area of the clamping mechanism 4, and transmits this information to the material turning device 72, and then sends a command to start the clamping action to the controller of the device. The positioning mechanism 5 utilizes the sensor 51 technology to ensure that the material is accurately grasped by the clamping mechanism 4 at a predetermined position by real-time monitoring of the material position, so as to achieve efficient and precise automatic operation.

[0051] In order to prevent the material from falling during the turning process and causing damage, an anti-slip portion 46 for increasing friction is provided on the contact surface where the clamping arm 41 contacts the material, thereby increasing the interaction force between the material and the clamping arm 41, so that the clamping action of the clamping mechanism 4 is more stable. The clamping force of the clamping arm 41 can also be adjusted by adjusting the torque of the third driving member 233 to adapt to materials of different materials and weights, and avoid material deformation caused by over-tight clamping or material falling off caused by over-loose clamping.

[0052] As Figures 1 to 9 As shown in the figure, as a further technical solution of the present application, the lifting assembly 23 includes guide rods 231 that are respectively slidably matched with both ends of the cross beam 22, and two lead screws 232 that are respectively threadedly matched with the left and right ends of the cross beam 22. It also includes a third driving member 233 provided on one side of the support frame 21 for driving the two lead screws 232 to rotate synchronously and then driving the cross beam 22 to move up and down. The upper end of the guide rod 231 is fixedly connected to the upper part of the support frame 21, the lower end of the guide rod 231 is fixedly connected to the lower part of the frame 1, the upper end of the lead screw 232 is rotatably matched with the upper part of the support frame 21, and the lower end of the lead screw 232 is rotatably matched with the lower part of the frame 1.

[0053] Among them, the support frame 21 can be a gantry. The gantry includes a crossbar horizontally arranged above the frame 1 and two vertical rods vertically installed on the frame 1. The vertical rods are used to support the crossbar. The crossbar, as the main support platform of the entire flipping device, has sufficient strength and rigidity to withstand various forces generated during the material flipping process. The vertical rods transmit the forces received by the crossbar to the frame 1, thereby maintaining the balance and stability of the entire structure. The vertical rods and the crossbar are fixedly connected by welding or fasteners used for locking. Among them, the fasteners are common technical solutions understandable by those skilled in the art in the prior art. This gantry not only ensures the stability during the material flipping process but also can adapt to materials of different sizes and weights, having good versatility and adaptability.

[0054] In addition, the third driving component 233 includes a motor 321 and a synchronous belt 242. The motor 321 is arranged on one side of the support frame 21. Synchronous pulleys 241 are provided on the upper parts of the two lead screws 232. A synchronous belt 242 is wound around the two synchronous pulleys 241. The two lead screws 232 are connected by means of the synchronous belt 242 and the synchronous pulleys 241 to rotate synchronously, improving the transmission efficiency and reliability of the lifting component 23. The motor 321 can drive one of the lead screws 232 to rotate by means of the synchronous pulley 241, the synchronous belt 242 or a coupling (not shown in the figure). It should be noted that the above-mentioned use of a coupling to connect the two lead screws 232 to make them rotate together and transmit torque belongs to the prior art.

[0055] Furthermore, the lifting component 23 further includes a self-locking mechanism (not shown in the figure). Through the meshing structure of a worm and a worm gear (not shown in the figure), the worm is driven to rotate by the motor 321, and in cooperation with the sensor 51 to monitor the position in real time, precise positioning and reverse unlocking are achieved. It should be noted that the self-locking mechanism using a worm and a worm gear during the lifting process of the lifting component 23 is the prior art and will not be elaborated here too much.

[0056] As Figures 1 to 9 shown, further, a second conveyor belt 62 is also provided below the material flipping device 72, which cooperates with the first conveyor belt 61 to convey the printed material into the next process. The second conveyor belt 62 is lower than the first conveyor belt 61 to form a height difference that can accommodate the clamping mechanism 4 to clamp the material for flipping. The first conveyor belt 61 and the second conveyor belt 62 do not interfere with each other.

[0057] Specifically, the first conveyor belt 61 is electrically connected to the UV printing device 7 and conveys the material bidirectionally on the first conveyor belt 61.

[0058] This application relates to a UV printing device, including a UV printing unit 7 and the above-mentioned material turning device 72. The UV printing unit 7 includes a first conveyor belt 61 and a UV printing mechanism 71 disposed on the first conveyor belt 61. The material turning device 72 is used to turn the material conveyed by the first conveyor belt 61 so that the material can cooperate with the UV printing mechanism 71 again through the first conveyor belt 61, thereby completing the multi-sided printing of the material. The material turning device 72 cooperates with the existing UV printing unit 7 to complete the double-sided printing of the material.

[0059] Among them, a controller (not shown in the figure) is provided in the UV printing device. The controller is used to control the working processes of the UV printing unit 7 and the material turning device 72, as well as the collaborative work between the two.

[0060] In this application, the UV printing device feeds the material into the UV printing mechanism 71 through the first conveyor belt 61 for printing. The material turning device 72 is responsible for turning the material printed on one side so that it passes through the first conveyor belt 61 and the UV printing mechanism 71 again to complete the printing of the other side, thereby realizing the multi-sided printing function. Using the UV printing device of this application means that for materials with multiple surfaces that need to be printed, the working process of repeated turning and printing can be adopted so that multiple surfaces of the material can be printed, which compresses the printing time and effectively improves the printing efficiency.

[0061] Due to the characteristics of fast drying, bright colors, and strong durability of UV printing technology, it is widely used in industries such as advertising, decoration, and packaging. Traditional UV printing devices usually can only print one side, while the UV printing device of this application realizes multi-sided printing of materials by introducing a material turning device 72, greatly improving the printing efficiency and flexibility.

[0062] The working process of the UV printing device: First, the material is conveyed by the first conveyor belt 61 to the clamping mechanism 4 for printing on one surface. Then, the material is turned and continues to be transported by the first conveyor belt 61 to the UV printing device for printing on other surfaces. After printing is completed, when the material passes through the material turning device 72 again, the lifting mechanism 2 drives the crossbeam 22 to rise to avoid the material, so that the material falls from the first conveyor belt 61 and is conveyed into the second conveyor belt 62, and is conveyed through the second conveyor belt 62 to enter the next process. After the material turning device 72 rises, it resets to wait for the arrival of the next batch of materials. The entire UV printing process has a high degree of automation, improving production efficiency and printing quality.

Claims

1. A material turning device for UV printing materials, wherein the material turning device (72) cooperates with a UV printing device (7), and the UV printing device (7) comprises a first conveyor belt (61) and a UV printing mechanism (71) arranged above the first conveyor belt (61), characterized in that The material turning device (72) comprises a frame (1) for supporting the entire material turning device (72), a lifting mechanism (2) arranged on the frame (1) for lifting the material to a preset height, a turning mechanism (3) arranged on the lifting mechanism for turning the material, and a clamping mechanism (4) arranged on the lifting mechanism for clamping the material. The material turning device (72) also comprises a positioning mechanism (5) arranged on the clamping mechanism (4) for detecting whether the material enters the working area of ​​the clamping mechanism (4). The clamping mechanism (4) is connected to the turning mechanism (3), and the turning mechanism (3) drives the clamping mechanism (4) to rotate so as to turn the material. The clamping mechanism (4) clamps the material transported by the first conveyor belt (61) and turns it so that the material passes through the first conveyor belt (61) and cooperates with the UV printing mechanism (71) again. A second conveyor belt (62) is also arranged below the material turning device (72) to cooperate with the first conveyor belt (61) to transport the printed material to the next process.

2. A material turning device for UV printed materials according to claim 1, characterized in that The lifting mechanism (2) comprises a support frame (21) arranged on the frame (1), and a crossbeam (22) slidably matched with the support frame (21) up and down. The lifting mechanism (2) also comprises a lifting component (23) arranged on the support frame (21) for driving the crossbeam (22) to move up and down.

3. The material turning device for UV printed materials according to claim 2, characterized in that The clamping mechanisms (4) are provided in plurality and arranged in parallel on the crossbeam (22), and a plurality of the clamping mechanisms (4) are connected to the turning mechanism (3), and the turning mechanism (3) drives a plurality of the clamping mechanisms (4) to rotate synchronously, thereby turning the material.

4. The material turning device for UV printed materials according to claim 3, characterized in that The clamping mechanism (4) comprises a pair of clamping arms (41) for clamping materials and a first driving component (42) for driving the clamping arms (41) to move. The clamping mechanism (4) further comprises a rotating shaft (43) rotatably matched with the crossbeam (22) and a connecting seat (44) fixed to one end of the rotating shaft (43). The first driving component (42) and the clamping arm (41) are arranged on the connecting seat (44). The other end of the rotating shaft (43) is formed with a gear part (45). The flipping mechanism (3) drives the gear part (45) to rotate, thereby driving the entire clamping mechanism (4) to flip.

5. The material turning device for UV printed materials according to claim 4, characterized in that The turning mechanism (3) comprises a rack (31) slidably matched with the crossbeam (22) and a second driving component (32) arranged on the crossbeam (22) for driving the rack (31) to reciprocate along the length direction of the crossbeam (22); the rack (31) meshes with a corresponding gear part (45).

6. The material turning device for UV printed materials according to claim 5, characterized in that The second driving component (32) comprises a motor (321) and a transmission gear (322); the transmission gear (322) is arranged on the output shaft of the motor (321) and meshes with the rack (31); the motor (321) drives the transmission gear (322) to rotate so as to drive the rack (31) to reciprocate along the length direction of the crossbeam (22), thereby driving the gear part (45) to rotate so as to realize the flipping of the clamping mechanism (4).

7. The material turning device for UV printed materials according to claim 1, characterized in that The second conveyor belt (62) is lower than the first conveyor belt (61) to form a height difference that can accommodate the clamping mechanism (4) to clamp the material for flipping.

8. The material turning device for UV printed materials according to claim 1, characterized in that The positioning mechanism (5) comprises a sensor (51) arranged on the clamping mechanism (4), the sensor (51) being used to collect material position signals and being electrically connected to the material turning device (72), the sensor (51) being able to determine whether the material has arrived at the working area of ​​the clamping mechanism (4), and starting the clamping action of the clamping mechanism (4) after confirming that the material has arrived at the working area.

9. The material turning device for UV printed materials according to claim 2, characterized in that The lifting assembly (23) comprises a guide rod (231) respectively slidably matched with the two ends of the cross beam (22), and two screw rods (232) respectively threadedly matched with the left and right ends of the cross beam (22), and also comprises a third driving component (233) arranged on one side of the support frame (21) for driving the two screw rods (232) to rotate synchronously and thus drive the cross beam (22) to move up and down, the upper end of the guide rod (231) is fixedly connected to the upper part of the support frame (21), the lower end of the guide rod (231) is fixedly connected to the lower part of the frame (1), the upper end of the screw rod (232) is rotationally matched with the upper part of the support frame (21), and the lower end of the screw rod (232) is rotationally matched with the lower part of the frame (1).

10. A UV printing device, characterized in that It comprises a UV printing device and a material turning device (72) for UV printing material according to any one of claims 1 to 9, wherein the UV printing device (7) comprises a first conveyor belt (61) and a UV printing mechanism (71) arranged on the first conveyor belt (61), and the material turning device (72) is used to turn over the material conveyed by the first conveyor belt (61) so that the material passes through the first conveyor belt (61) and cooperates with the UV printing mechanism (71) again to complete multi-sided printing of the material.

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