UV printing device

Abstract

The invention discloses a UV printing device, and relates to the technical field of UV printing. A UV printing device comprises a workbench, the workbench is provided with a material conveying mechanism, the material conveying mechanism is provided with a connecting frame, the connecting frame is rotationally connected with a clamping mechanism used for clamping a workpiece, and the connecting frame is further provided with an overturning mechanism capable of driving the clamping mechanism to overturn. A feeding mechanism, a first printing mechanism, a control mechanism, a second printing mechanism and a discharging mechanism are sequentially arranged on the workbench in the conveying direction of the conveying mechanism, and the control mechanism can control the overturning mechanism to work so as to overturn the clamping mechanism. The double-sided printing device can conveniently perform double-sided printing on the workpiece.

Description

Technical Field

[0001] This application relates to the technical field of UV printing, and in particular, to a UV printing device. Background Art

[0002] In today's printing industry, with the increasing requirements for the quality and production efficiency of printed products in the market, printing technologies are constantly innovating. As an advanced printing technology, UV printing occupies an important position in the industry with its unique advantages; UV printing technology cures the ink instantly through ultraviolet irradiation, greatly shortening the drying time and thus effectively improving the production efficiency.

[0003] Currently, in industrial automated production, hard workpieces such as acrylic plates, glass plates, metal plates, plastic plates, etc. usually use UV printing technology for automated production. Generally, factories will assemble UV printing production lines, and such production lines will at least include four stations: loading, printing, curing, and unloading.

[0004] After the workpiece has completed one round of circulation on the above production line, usually only one side of the workpiece can be printed. When the workpiece needs to be printed on both sides, manual intervention is required to collect the unloaded workpiece and re-circulate it on the production line for another round, and manual intervention is also required to ensure that the printed surface of the workpiece faces correctly. The above-mentioned manual intervention will not only reduce the production efficiency but also increase the labor cost. Summary of the Invention

[0005] In order to facilitate double-sided printing of workpieces, this application provides a UV printing device.

[0006] The UV printing device provided by this application adopts the following technical solutions: A UV printing device includes a workbench, a feeding mechanism is installed on the workbench, a connecting frame is installed on the feeding mechanism, a clamping mechanism for clamping the workpiece is rotatably connected to the connecting frame, and a turning mechanism capable of driving the clamping mechanism to turn is also installed on the connecting frame; An upper feeding mechanism, a first printing mechanism, a control mechanism, a second printing mechanism, and a blanking mechanism are sequentially arranged on the workbench along the conveying direction of the feeding mechanism, and the control mechanism can control the turning mechanism to work so as to turn the clamping mechanism.

[0007] By adopting the above technical solutions, the following operations can be achieved: driving the feeding mechanism to work, placing the workpiece on the clamping mechanism by the upper feeding mechanism for clamping, the workpiece sequentially reaches the first printing mechanism, the control mechanism, and the second printing mechanism to perform the first-side printing, workpiece turning, and second-side printing in sequence, and finally the workpiece reaches one side of the blanking mechanism and is blanked by the blanking mechanism. This application can facilitate double-sided printing of workpieces.

[0008] Preferably, the clamping mechanism includes a mounting ring rotatably connected to the connecting frame, the inner hole wall of the mounting ring is provided with a mounting groove, the mounting groove is slidably connected with a clamping member, and the clamping member extends into the mounting ring; a spring is provided in the mounting groove, one end of the spring is connected to the mounting groove, and the other end is connected to the clamping member; the workpiece can be clamped into the ring hole of the mounting ring from the outside and thus clamped by the clamping member.

[0009] By adopting the above technical solution, the workpiece can be clamped into the ring hole of the mounting ring from the outside, and at this time, the clamping member will clamp the workpiece under the action of the spring.

[0010] Preferably, the clamping member includes a clamping block, which is slidably connected to the mounting groove; a clamping area is formed in the hole of the mounting ring, and the clamping block has a guiding bevel at one end close to the clamping area, and the guiding bevel is used to guide the workpiece from the outside to be clamped into the clamping area.

[0011] By adopting the above technical solution, when the workpiece is clamped into the clamping area from the outside, the workpiece will first contact the guiding inclined surface and the clamping block will move away from the clamping area under the action of friction, and the spring will be compressed.

[0012] Preferably, the flipping mechanism includes a worm gear assembly and a rack and pinion assembly installed on a connecting frame, the rack and pinion assembly is transmission connected to the input end of the worm gear assembly, the worm gear assembly can be self-locking, and the output end of the worm gear assembly is transmission connected to the mounting ring; the rack and pinion assembly is connected to a control rod, and the control mechanism can drive the control rod to move to drive the rack and pinion assembly to work.

[0013] By adopting the above technical solution, the control mechanism can be used to drive the control rod to move, thereby driving the mounting ring to rotate through the transmission of the gear rack assembly and the worm gear assembly in turn, thereby realizing the flipping of the workpiece.

[0014] Preferably, the control mechanism includes a mounting frame connected to the workbench, the mounting frame is equipped with a driving member, the driving member is connected to a suction cup, the control rod is connected to a mounting plate that can be sucked by the suction cup, and the driving member is used to drive the suction cup to move to suck the mounting plate and thereby drive the control rod to move.

[0015] By adopting the above technical solution, the suction cup can be driven to move to suck the mounting plate by driving the driving member. At this time, the driving member can be used to drive the control rod to move to control the flipping of the workpiece.

[0016] Preferably, a first frame is further installed on the workbench. A power component is installed on the first frame. The power component is connected to a second frame. A first plasma processing component and a second plasma processing component are installed on the second frame. The first plasma processing component is used to process one side of the workpiece, and the second plasma processing component is used to process the other side of the workpiece. The power component can drive the mounting frame to move to a position where the first plasma processing component and the second plasma processing component are respectively located on both sides of the workpiece, so as to perform double-sided processing of the workpiece.

[0017] By adopting the above technical solution, driving the power component can drive the second frame to move, so that the first plasma processing component and the second plasma processing component move to both sides of the workpiece, and then driving the first plasma processing component and the second plasma processing component can simultaneously perform double-sided processing of the workpiece.

[0018] Preferably, the feeding mechanism includes a vibrating bowl installed on the workbench. The vibrating bowl is used to send out workpieces. A fixing frame is further installed on the workbench. A multi-axis cylinder assembly is installed on the fixing frame. The multi-axis cylinder assembly is connected to a clamping component. The multi-axis cylinder assembly is used to drive the clamping component to move to clamp the workpiece conveyed by the vibrating bowl and send it to the clamping mechanism.

[0019] By adopting the above technical solution, the vibrating bowl can send out workpieces one by one. Driving the multi-axis cylinder assembly can drive the clamping component to move to clamp and place the sent-out workpiece on the clamping mechanism.

[0020] Preferably, the first printing mechanism includes an inkjet component and an ultraviolet curing component. Both the inkjet component and the ultraviolet curing component are installed on the material conveying mechanism. The inkjet component and the ultraviolet curing component are arranged along the direction from the feeding mechanism to the discharging mechanism.

[0021] By adopting the above technical solution, in cooperation with the material conveying mechanism, the printing work of UV inkjet - ultraviolet curing can be automatically realized.

[0022] In summary, the present invention includes at least one of the following beneficial technical effects: 1. This application can perform the following operations: driving the material conveying mechanism to work, placing the workpiece on the clamping mechanism by using the feeding mechanism, and the workpiece successively reaches the first printing mechanism, the control mechanism and the second printing mechanism to perform the first-side printing, workpiece flipping and second-side printing in sequence. Finally, the workpiece reaches one side of the discharging mechanism and is discharged by the discharging mechanism; 2. By driving the driving component, the suction cup can be driven to move to suck the mounting plate. At this time, the driving component can be used to drive the control rod to move, and then drive the mounting ring to rotate under the transmission of the gear-rack assembly and the worm-gear assembly to realize workpiece flipping; 3. Driving the driving power component can drive the second frame to move, so that the first plasma processing component and the second plasma processing component move to both sides of the workpiece. Then, driving the first plasma processing component and the second plasma processing component can simultaneously perform double-sided processing on the workpiece. Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of a UV printing device in an embodiment of the present application; Figure 2 is the structural schematic diagram for embodying the clamping mechanism; Figure 3 is the cross-sectional view for embodying the clamping mechanism; Figure 4 is the structural schematic diagram for embodying the loading mechanism; Figure 5 is Figure 1 the enlarged view of part A in Figure 6 is the structural schematic diagram for embodying the unloading mechanism.

[0024] Reference signs in the drawings: 1, workbench; 11, first frame; 12, power component; 13, second frame; 14, first plasma processing component; 15, second plasma processing component; 2, feeding mechanism; 21, connecting frame; 22, clamping mechanism; 221, mounting ring; 2211, mounting groove; 2212, clamping area; 222, clamping member; 2221, clamping block; 2222, guiding inclined surface; 223, spring; 23, flipping mechanism; 231, worm and worm gear assembly; 232, gear and rack assembly; 233, control rod; 234, mounting plate; 3, loading mechanism; 31, vibrating plate; 32, fixing frame; 33, multi-axis cylinder assembly; 331, horizontal reciprocating cylinder; 332, vertical reciprocating cylinder; 333, rotating cylinder; 34, material clamping member; 4, first printing mechanism; 41, inkjet member; 42, ultraviolet curing member; 5, control mechanism; 51, mounting frame; 52, driving member; 53, suction cup; 6, second printing mechanism; 7, unloading mechanism; 71, frame plate; 72, multi-axis cylinder drive assembly; 73, material clamping member; 74, collection box. Detailed Embodiment

[0025] The present invention will be further described in detail below with reference to the drawings.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0027] An embodiment of the present application discloses a UV printing device. The present application can automatically complete double-sided printing of workpieces. In this embodiment, a cuboid-shaped workpiece is taken as an example.

[0028] Referring to Figure 1 and Figure 2 , a UV printing device includes a workbench 1. A feeding mechanism 2 is installed on the workbench 1. The feeding mechanism 2 is preferably a belt conveyor mechanism. A plurality of connecting frames 21 are installed on the feeding mechanism 2. Each connecting frame 21 is rotatably connected with a clamping mechanism 22 for clamping the workpiece. Each connecting frame 21 is further installed with a turning mechanism 23 capable of driving the clamping mechanism 22 to turn; along the conveying direction of the feeding mechanism 2 on the workbench 1, a loading mechanism 3, a first printing mechanism 4, a control mechanism 5, a second printing mechanism 6 and a discharging mechanism 7 are sequentially arranged. Among them, the control mechanism 5 can control the turning mechanism 23 to work so as to turn the clamping mechanism 22, that is, turn the workpiece.

[0029] First, drive the loading mechanism 3 to place the workpiece on the clamping mechanism 22 so that the workpiece is clamped. Then drive the feeding mechanism 2 so that the workpiece sequentially reaches one side of the first printing mechanism 4, the control mechanism 5, and the second printing mechanism 6 to perform first-side printing, workpiece turning, and second-side printing in sequence. Finally, when the workpiece reaches one side of the discharging mechanism 7, drive the discharging mechanism 7 to discharge the workpiece.

[0030] Referring to Figure 2 and Figure 3 , the clamping mechanism 22 includes a mounting ring 221 rotatably connected to the connecting frame 21 through a bearing. An installation groove 2211 is formed on the inner hole wall of the mounting ring 221. A clamping member 222 is slidably connected to the installation groove 2211, and the clamping member 222 extends into the mounting ring 221; a spring 223 is arranged in the installation groove 2211. One end of the spring 223 is connected to the installation groove 2211, and the other end is connected to the clamping member 222; the workpiece can be clamped by the clamping member 222 after being clamped into the ring hole of the mounting ring 221 from the outside. Specifically, the clamping member 222 includes a clamping block 2221, and the clamping block 2221 is slidably connected to the installation groove 2211; a clamping area 2212 is formed in the hole of the mounting ring 221. One end of the clamping block 2221 close to the clamping area 2212 has a guiding inclined surface 2222, and the guiding inclined surface 2222 is used to guide the workpiece to be clamped into the clamping area 2212 from the outside. In this embodiment, the workpiece is clamped into the clamping area 2212 from top to bottom.

[0031] When the workpiece enters the clamping area 2212 from top to bottom, the workpiece will first come into contact with the guiding inclined plane 2222, and due to the frictional force, the clamping block 2221 will move away from the clamping area 2212, and the spring 223 will be compressed. After the workpiece completely enters the clamping area 2212, the clamping block 2221 abuts against the workpiece, and the spring 223 provides the clamping force for the clamping member 222.

[0032] Referring to Figure 2 and Figure 4 As shown in FIGS. and, the feeding mechanism 3 includes a vibrating bowl 31 installed on the workbench 1. The specific structure of the vibrating bowl 31 is prior art. The vibrating bowl 31 is used to send out workpieces one by one. A fixing frame 32 is installed on the workbench 1, and a multi-axis cylinder assembly 33 is installed on the fixing frame 32. The multi-axis cylinder assembly 33 includes a horizontally reciprocating cylinder 331 installed on the fixing frame 32, a vertically reciprocating cylinder 332 connected to the horizontally reciprocating cylinder 331, and a rotary cylinder 333 connected to the vertically reciprocating cylinder 332. The rotary cylinder 333 is connected with a material clamping member 34. The material clamping member 34 is a clamping cylinder. The horizontally reciprocating cylinder 331, the vertically reciprocating cylinder 332 and the clamping cylinder work together to drive the material clamping member 34 to move and clamp the workpieces conveyed by the vibrating bowl 31 onto the clamping mechanism 22 one by one.

[0033] Referring to Figure 4 As shown in FIGS., in order to ensure the printing quality of subsequent workpieces, the workpiece needs to be subjected to plasma treatment before printing. Therefore, a frame one 11 is also installed on the workbench 1. A power member 12 is installed on the frame. The power member 12 is preferably a cylinder. The power member 12 is connected with a frame two 13. The power member 12 can drive the frame two 13 to move back and forth. A first plasma treatment member 14 and a second plasma treatment member 15 are installed on the frame two 13. The first plasma treatment member 14 is used to treat one side of the workpiece, and the second plasma treatment member 15 is used to treat the other side of the workpiece. The first plasma treatment member 14 and the second plasma treatment member 15 can spray plasma gas, and its specific structure is prior art; the power member 12 can drive the frame two 13 to move to a position where the first plasma treatment member 14 and the second plasma treatment member 15 are respectively located on both sides of the workpiece to perform double-sided treatment of the workpiece.

[0034] Referring to Figure 5 As shown in FIGS., the first printing mechanism 4 includes an inkjet member 41 and an ultraviolet curing member 42. Both the inkjet member 41 and the ultraviolet curing member 42 are installed on the feeding mechanism 2. Combining Figure 1 As shown in FIGS., the inkjet member 41 and the ultraviolet curing member 42 are arranged along the direction from the feeding mechanism 3 to the discharging mechanism 7. Among them, the inkjet member 41 can spray UV ink, and the ultraviolet curing member 42 can emit ultraviolet rays to cure the UV ink so as to complete UV printing. The specific structures of the inkjet member 41 and the ultraviolet curing member 42 are prior art, so they will not be elaborated here. The first printing mechanism 4 is used to print one side of the workpiece.

[0035] Referring to Figure 2 and Figure 3 Figure 3 , the flipping mechanism 23 includes a worm and gear assembly 231 and a rack and pinion assembly 232 mounted on the connecting frame 21. The rack and pinion assembly 232 is drivingly connected to the input end of the worm and gear assembly 231. The worm and gear assembly 231 can be self-locked. The output end of the worm and gear assembly 231 is drivingly connected to the mounting ring 221, that is, the worm and gear assembly 231 can output force to drive the mounting ring 221 to rotate. The specific structures of the worm and gear assembly 231 and the rack and pinion assembly 232 are both prior arts, so they will not be described in detail here; a control rod 233 is connected to the input end of the rack and pinion assembly 232. The control mechanism 5 can drive the control rod 233 to move up and down to drive the rack and pinion assembly 232 to work. In this embodiment, each connecting frame 21 is provided with two flipping mechanisms 23. The two flipping mechanisms 23 are respectively located on both sides of the mounting ring 221. The two flipping mechanisms 23 are centrosymmetric based on the center of the mounting ring 221. The two flipping mechanisms 23 work together to drive the mounting ring 221 to flip.

[0036] Referring to Figure 5 Figure 5 , specifically, the control mechanism 5 includes a mounting frame 51 connected to the workbench 1. A driving member 52 is mounted on the mounting frame 51. The driving member 52 is a cylinder. A suction cup 53 is connected to the driving member 52. An installation plate 234 that can be sucked by the suction cup 53 is connected to the control rod 233. The driving member 52 can drive the suction cup 53 to move to suck the installation plate 234 so as to drive the control rod 233 to move.

[0037] When the mounting ring 221 reaches one side of the control mechanism 5, drive the driving member 52 to drive the suction cup 53 to move down to suck the installation plate 234, thereby driving the installation plate 234 to move up or down. The movement of the installation plate 234 will drive the control rod 233 to move, and thus drive the mounting ring 221 to flip under the transmission of the rack and pinion assembly 232 and the worm and gear assembly 231, and then the workpiece is flipped. It should be noted that whether the installation plate 234 moves down or up needs to be determined based on the position of the control rod 233.

[0038] Referring to Figure 6 Figure 6 , in this application, the second printing mechanism 6 is the same as the first printing structure, so it will not be described again. The second printing mechanism 6 is used for printing the other side of the workpiece.

[0039] Referring to Figure 6 Figure 6 , the blanking mechanism 7 includes a frame plate 71 mounted on the workbench 1. A multi-axis cylinder drive assembly 72 is mounted on the frame plate 71. The structure of the multi-axis cylinder drive assembly 72 is the same as that of the multi-axis cylinder assembly 33. The multi-axis cylinder drive assembly 72 is connected to a material clamping member 73. The material clamping member 73 is a clamping cylinder. A collection box 74 for collecting workpieces is also provided on the workbench 1.

[0040] In the embodiment of the present application, the implementation principle of a UV printing device is as follows: First, a plurality of workpieces are placed in the vibrating bowl 31. The vibrating bowl 31 is driven to send out the workpieces one by one. The multi-axis cylinder assembly 33 and the clamping member 34 are driven to move, and the workpieces conveyed by the vibrating bowl 31 are clamped and sent into the clamping area 2212 one by one. The workpieces located in the clamping area 2212 will be suspended by being resisted by the clamping blocks 2221, and the feeding mechanism 2 is driven to move the workpieces according to the rhythm. The workpiece will reach one side of the power member 12. The power member 12 is driven to drive the first plasma processing member 14 and the second plasma processing member 15 to move to be located on both sides of the workpiece respectively, and the first plasma processing member 14 and the second plasma processing member 15 are used to eject plasma gas to perform double-sided processing on the workpiece. Then the workpiece will reach one side of the inkjet member 41 and the ultraviolet curing member 42 in sequence. The inkjet member 41 sprays UV ink onto one side of the workpiece, and the ultraviolet curing member 42 cures the sprayed UV ink, and one brushing of one side of the workpiece is completed. After that, the workpiece reaches one side of the driving member 52. The driving member 52 is driven to drive the suction cup 53 to move downward to suck the mounting plate 234, thereby driving the mounting plate 234 to move upward or downward. The movement of the mounting plate 234 will drive the control rod 233 to move, and thus drive the mounting ring 221 to flip under the transmission of the gear-rack assembly 232 and the worm and worm gear assembly 231, and then the workpiece is flipped. Then the workpiece will reach the second printing mechanism 6, and the other side of the workpiece will be printed. Finally, the workpiece reaches one side of the multi-axis cylinder transmission assembly 72. The multi-axis cylinder transmission assembly 72 and the material clamping member 73 are driven to clamp the workpiece and move the workpiece to be placed in the collection box 74.

[0041] The embodiments of the specific implementation manners are all the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A UV printing device, characterized in that: The workbench (1) comprises a workbench (1) equipped with a feeding mechanism (2), a connecting frame (21) being installed on the feeding mechanism (2), the connecting frame (21) being rotatably connected to a clamping mechanism (22) for clamping a workpiece, and a turning mechanism (23) capable of driving the clamping mechanism (22) to turn over being also installed on the connecting frame (21); The workbench (1) is provided with a loading mechanism (3), a first printing mechanism (4), a control mechanism (5), a second printing mechanism (6) and a unloading mechanism (7) in sequence along the conveying direction of the feeding mechanism (2); the control mechanism (5) is capable of controlling the turning mechanism (23) to work, thereby turning over the clamping mechanism (22).

2. A UV printing device according to claim 1, characterized in that: The clamping mechanism (22) comprises a mounting ring (221) rotatably connected to the connecting frame (21); an inner hole wall of the mounting ring (221) is provided with a mounting groove (2211); a clamping member (222) is slidably connected to the mounting groove (2211); the clamping member (222) extends into the mounting ring (221); a spring (223) is provided in the mounting groove (2211); one end of the spring (223) is connected to the mounting groove (2211), and the other end is connected to the clamping member (222); the workpiece can be clamped into the ring hole of the mounting ring (221) from the outside, thereby being clamped by the clamping member (222).

3. A UV printing device according to claim 2, characterized in that: The clamping member (222) comprises a clamping block (2221), and the clamping block (2221) is slidably connected to the mounting groove (2211); a clamping area (2212) is formed in the hole of the mounting ring (221), and one end of the clamping block (2221) close to the clamping area (2212) has a guiding inclined surface (2222), and the guiding inclined surface (2222) is used to guide the workpiece to be clamped into the clamping area (2212) from the outside.

4. A UV printing device according to claim 2, characterized in that: The tilting mechanism (23) comprises a worm gear assembly (231) and a gear rack assembly (232) mounted on a connecting frame (21); the gear rack assembly (232) is drivingly connected to the input end of the worm gear assembly (231); the worm gear assembly (231) is capable of self-locking; and the output end of the worm gear assembly (231) is drivingly connected to a mounting ring (221); the gear rack assembly (232) is connected to a control rod (233); and the control mechanism (5) is capable of driving the control rod (233) to move so as to drive the gear rack assembly (232) to work.

5. A UV printing device according to claim 4, characterized in that: The control mechanism (5) comprises a mounting frame (51) connected to the workbench (1), the mounting frame (51) being equipped with a driving member (52), the driving member (52) being connected with a suction cup (53), the control rod (233) being connected with a mounting plate (234) capable of being sucked by the suction cup (53), the driving member (52) being used to drive the suction cup (53) to move so as to suck the mounting plate (234) and thereby drive the control rod (233) to move.

6. A UV printing device according to claim 4, characterized in that: The workbench (1) is also provided with a frame body (11), the frame body is provided with a power part (12), the power part (12) is connected with a frame body (13), the frame body (13) is provided with a first plasma processing part (14) and a second plasma processing part (15), the first plasma processing part (14) is used to process one side of the workpiece, and the second plasma processing part (15) is used to process the other side of the workpiece; the power part (12) can drive the mounting frame (51) to move until the first plasma processing part (14) and the second plasma processing part (15) are respectively located on both sides of the workpiece, thereby performing double-sided processing of the workpiece.

7. A UV printing device according to claim 2, characterized in that: The feeding mechanism (3) comprises a vibrating plate (31) mounted on a workbench (1), the vibrating plate (31) being used to deliver a workpiece, a fixing frame (32) being also mounted on the workbench (1), a multi-axis cylinder assembly (33) being mounted on the fixing frame (32), the multi-axis cylinder assembly (33) being connected to a clamping member (34), the multi-axis cylinder assembly (33) being used to drive the clamping member (34) to move so as to clamp the workpiece delivered by the vibrating plate (31) and deliver it to the clamping mechanism (22).

8. A UV printing device according to claim 1, characterized in that: The first printing mechanism (4) comprises an inkjet component (41) and an ultraviolet curing component (42), wherein the inkjet component (41) and the ultraviolet curing component (42) are both installed on the feeding mechanism (2), and the inkjet component (41) and the ultraviolet curing component (42) are arranged along the direction from the feeding mechanism (3) to the unloading mechanism (7).

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