Jet printing equipment

Abstract

The utility model discloses a jet printing device which comprises a rack, a jet printing assembly and a positioning assembly are arranged on the rack, a supporting seat is further arranged on the rack, a table top used for placing paper pieces to be jet-printed is formed on the supporting seat, a conveying assembly used for conveying the paper pieces to be jet-printed is arranged on the supporting seat, and the positioning assembly is arranged on the rack. The positioning assembly is used for positioning a paper piece to be jet-printed, and a spray head of the jet-printing assembly is located below the paper piece to be jet-printed and carries out jet-printing on the paper piece to be jet-printed from bottom to top. According to the utility model, the ink can naturally flow downwards without being left in the nozzle, so that the nozzle is prevented from being blocked by solidification of the ink for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of inkjet printing, in particular to an inkjet printing device. Background Art

[0002] An inkjet printer uses UV ink to perform inkjet printing on materials to achieve local or overall UV printing effects. The inkjet printer is suitable for printing on different shapes and different materials. Compared with traditional printing, inkjet printing has the characteristics of instant rapid curing, less pollution, and can print on different materials, and has broad market application prospects. Currently, the nozzles of inkjet printers on the market are usually located above the workpiece to be inkjet-printed, and inkjet printing is performed from top to bottom. This inkjet printing method has disadvantages. One is that the nozzles can only spray ink downward and cannot spray the lower surface of the paper workpiece. It can only spray ink by flipping the paper workpiece, which is very inflexible. The second is that the nozzles are located above the paper workpiece. After inkjet printing, due to gravity, the ink between the nozzles and the pipelines will be missing, resulting in ink shortage during inkjet printing. Long-term ink shortage and placement are likely to cause damage to the nozzles. Content of the Utility Model

[0003] The purpose of the utility model is to design an inkjet printing device to solve the above-mentioned technical deficiencies.

[0004] The utility model designs an inkjet printing device, which includes a frame. An inkjet printing component and a positioning component are arranged on the frame. A support seat is also arranged on the frame. A tabletop for placing the paper workpiece to be inkjet-printed is formed on the support seat. A conveying component for conveying the paper workpiece to be inkjet-printed is arranged on the support seat. The positioning component is used to position the paper workpiece to be inkjet-printed. The nozzles of the inkjet printing component are located below the paper workpiece to be inkjet-printed and perform inkjet printing on the paper workpiece to be inkjet-printed from bottom to top.

[0005] Preferably, the conveying component includes a conveying roller rotatably connected to the support seat and a first driving structure for driving the conveying roller to rotate.

[0006] Preferably, the first driving structure includes a first driving member and a first gear transmission structure. The output end of the first driving member is connected to the roller body of the conveying roller through the first gear transmission structure. The conveying roller includes a first conveying roller, a second conveying roller, and a third conveying roller. The three conveying rollers are arranged in sequence along the conveying direction of the paper workpiece to be inkjet-printed in parallel. The three conveying rollers are synchronously rotated through the first gear transmission structure.

[0007] Further optimized, an operation opening is formed on the tabletop between the second conveying roller and the third conveying roller. The nozzles of the inkjet printing component are upwardly installed below the operation opening and perform inkjet on the paper workpiece to be inkjet-printed when the paper workpiece to be inkjet-printed passes above the nozzles.

[0008] Further optimized, a brush roller is arranged on the support seat between the first conveying roller and the second conveying roller.

[0009] For further optimization, a dust suction port is provided on the tabletop between the operation port and the second conveying roller, and a dust suction structure is provided on the support base below the dust suction port to remove dust from the paper piece to be printed passing through the dust suction port.

[0010] For further optimization, a second driving structure for driving the printing assembly to move horizontally is further provided on the support base. The second driving structure includes a second driving member and a second gear transmission structure. The second gear transmission structure includes a rack and a gear structure. The rack is horizontally arranged on the support base, the gear structure is installed on the printing assembly and meshes with the rack, and the output end of the second driving member is connected to and drives the gear structure to move along the extending direction of the rack, so as to realize the horizontal displacement of the printing assembly.

[0011] Preferably, the positioning assembly includes a mounting seat that can reciprocate along a direction perpendicular to the conveying direction of the conveying roller. A sun gear for pressing down is provided on the mounting seat. The mounting seat is movably connected with a lifting rod structure for fixing the sun gear, and a plurality of sun gears are distributed along the length direction of the conveying roller.

[0012] For further optimization, a lifting rod structure and a plurality of sun gears thereon form a pressing-down sun gear group. A set of pressing-down sun gear groups are respectively provided above the first conveying roller, the second conveying roller and the brush roller. A third driving structure is provided between each lifting rod structure and the mounting seat. The third driving structure includes a third driving member and a hinge structure. The hinge structure is installed between the lifting rod structure and the mounting seat, and the output end of the third driving member is connected to the hinge structure, so that the lifting rod structure can lift and press down relative to the mounting seat.

[0013] For further optimization, a first guide rail is provided on the frame. The mounting seat is provided with a first slider that slidably cooperates with the first guide rail. A belt structure and a fourth driving member for driving the belt structure to drive are further provided on the frame. A synchronous wheel for cooperating with the belt structure is provided on the first slider; a second guide rail in the same direction as the first guide rail is further provided on the frame, and the support base is provided with a second slider that slidably cooperates with the second guide rail.

[0014] The technical effect of the present utility model is that the nozzle of the printing assembly is arranged upward, so that the nozzle prints the passing paper piece from bottom to top. Different from the inkjet mode of the nozzle from top to bottom, with this setting mode of the present utility model, after the nozzle completes inkjet, the ink will flow down naturally and will not remain in the nozzle, avoiding the ink from solidifying and blocking the nozzle after a long time. Description of the Drawings

[0015] Figure 1 is the overall structure diagram of the present utility model;

[0016] Figure 2 is the structure diagram of the printing assembly in the present utility model;

[0017] Figure 3 It is the structural diagram of the positioning component in the present utility model;

[0018] Figure 4 It is another perspective view of the structure of the positioning component in the present utility model.

[0019] In the figure: 1, frame; 2, inkjet printing component; 21, nozzle; 3, support seat; 4, tabletop; 41, operation port; 42, dust suction port; 5, dust suction structure;

[0020] 6, first conveying roller; 7, second conveying roller; 8, third conveying roller; 9, first driving member; 10, first gear transmission structure; 11, brush roller; 12, second driving member; 13, second gear transmission structure;

[0021] 14, positioning component; 141, mounting seat; 142, lower pressing sun gear set; 1421, cross bar; 1422, swing arm; 1423, sun gear; 143, third driving member; 144, hinge structure; 145, sensor;

[0022] 15, first guide rail; 16, first slider; 17, fourth driving member; 18, belt structure; 19, second guide rail; 20, second slider. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0024] In this embodiment, as Figure 1 and 2 shown, it includes a frame 1, on which an inkjet printing component 2 and a positioning component 14 are provided. The inkjet printing component 2 includes a support seat 3. On the top of the support seat 3, there is a tabletop 4 for placing the paper piece to be inkjet printed. A conveying component is also provided on the support seat for conveying the paper piece to be inkjet printed. The positioning component is used to press the paper piece to be inkjet printed. The inkjet printing component is located below the paper piece to be inkjet printed and inkjet prints the paper piece to be inkjet printed from bottom to top.

[0025] The conveying assembly includes synchronous guide belts arranged on both sides of the tabletop 4. Between the two synchronous guide belts on the tabletop 4, there are a first conveying roller 6, a second conveying roller 7, and a third conveying roller 8 for conveying the paper piece to be printed. The first conveying roller 6, the second conveying roller 7, and the third conveying roller 8 are arranged in sequence along the conveying direction of the paper piece to be printed in parallel. The paper piece to be printed is placed on the tabletop 4, and the conveying is achieved through the three conveying rollers and the synchronous guide belts. The support base 3 is provided with a printing assembly 2 below the tabletop 4. The main components of the printing assembly 2 are an ink supply mechanism and a nozzle 21. The ink supply mechanism conveys ink to the nozzle 21, and the nozzle 21 is used for jetting ink. The printing assembly 2 is a conventional device, and its specific working principle and structure will not be elaborated here. The tabletop 4 is provided with an operation opening 41 between the third conveying roller 8 and the second conveying roller 7. The nozzle 21 of the printing assembly 2 is located directly below the operation opening 41, that is, the nozzle 21 is arranged upward, so that the nozzle 21 can ink-jet the paper piece to be printed passing through the operation opening 41 from bottom to top and print the bottom surface of the paper piece to be printed. Since the nozzle 21 is arranged upward, the ink will only flow into the nozzle 21 from the ink supply mechanism when the nozzle 21 is ink-jetting. After the ink-jetting is completed, the ink will flow downward naturally and will not accumulate in the nozzle 21. Therefore, the probability of the nozzle 21 being blocked is greatly reduced.

[0026] In addition, a heating mechanism can be additionally provided inside the nozzle 21 to prevent the ink from freezing in the nozzle 21 when the ambient temperature is relatively cold and causing blockage. The specific structure of the heating mechanism will not be elaborated here.

[0027] In addition, an ink anti-backflow mechanism can be additionally provided inside the nozzle 21. For example, a piston structure is arranged inside the nozzle 21, and the ink inside the nozzle 21 is sucked or pressed down through negative pressure or downward pressure. The specific structure of the anti-backflow mechanism will not be elaborated here.

[0028] The support base 3 is provided with a brush roller 11 between the first conveying roller 6 and the second conveying roller 7. As the name implies, the surface of the roller body of the brush roller 11 is provided with brushes, which are used for dusting the surface to be printed of the paper piece to be printed, so that the paper piece to be printed is cleaned before passing through the second conveying roller 7.

[0029] The tabletop 4 is provided with a dust suction port 42 between the operation opening 41 and the second conveying roller 7. The support base 3 is provided with a dust suction structure 5 below the dust suction port 42 to further remove dust from the paper piece to be printed after passing through the second conveying roller 7. The dust suction structure 5 realizes dust suction by driving a negative pressure suction on the dust suction port 42 through a blower.

[0030] The conveying assembly further includes a first driving structure disposed on the support base 3. The first driving structure includes a first driving member 9 and a first gear transmission structure 10. The output end of the first driving member 9 is connected to the roller body of the conveying roller through the first gear transmission structure 10. In this embodiment, the first gear transmission structure 10 includes a main gear, a belt, a tensioning wheel, and a driven wheel. The main gear is connected to the output end of the first driving member 9, the driven wheel is installed at the end of the roller body of the conveying roller, and the belt connects the main gear, the tensioning wheel, and the driven wheel in sequence to form a closed loop, so that the first conveying roller 6, the second conveying roller 7, and the third conveying roller 8 are driven to rotate synchronously.

[0031] In this embodiment, both the first conveying roller 6 and the second conveying roller 7 are rubber rollers.

[0032] The support base 3 is further provided with a second driving structure. The second driving structure includes a second driving member 12 and a second gear transmission structure 13. The second gear transmission structure 13 includes a rack and a gear structure. The rack is horizontally disposed on the support base 3, that is, the rack extends along the length direction of the conveying roller. The gear structure is rotatably installed on the printing assembly 2 and meshes with the rack. The output end of the second driving member 12 drives the gear structure to rotate, and the gear structure moves along the direction of the rack, so as to drive the printing assembly 2 to perform a lateral displacement, that is, the printing assembly 2 can reciprocate along a direction perpendicular to the conveying direction to realize printing back and forth in this direction.

[0033] The positioning assembly 14 is located above the table 4. The positioning assembly 14 includes a mounting seat 141. A sun gear 1423 for pressing down is provided on the mounting seat 141. The mounting seat 141 is movably connected with a lifting rod structure for fixing the sun gear 1423. In this embodiment, the movable connection is a hinge connection, and of course, it can also be other various movable connections. The lifting rod structure includes a cross bar 1421 in the same direction as the length direction of the conveying roller and swing arms 1422 located on both sides of the cross bar 1421. One end of the swing arm 1422 is hinged to the mounting seat 141, and the other end is hinged to the cross bar 1421. A plurality of sun gears 1423 are strung on the cross bar 1421, and the plurality of sun gears 1423 are evenly distributed at equal intervals along the length direction of the cross bar 1421, so that the lifting rod structure can be lifted and lowered relative to the mounting seat 141, thereby realizing the lifting and lowering of the sun gear 1423.

[0034] One lifting rod structure and a plurality of sun gears 1423 thereon are used as a pressing-down sun gear group 142. In this embodiment, a pressing-down sun gear group 142 is respectively provided above the first conveying roller 6, the second conveying roller 7, and the third conveying roller 8, that is, there are three pressing-down sun gear groups 142. The cross bars 1421 of the three pressing-down sun gear groups 142 are arranged in the same direction as the conveying roller, so that the first conveying roller 6, the second conveying roller 7, and the third conveying roller 8 respectively have a pressing-down sun gear 1423, so that the paper piece to be printed can be positioned up and down to maintain stability.

[0035] A third driving structure is provided between each lifting rod structure and the mounting seat 141. The third driving structure includes a third driving member 143 and a hinge structure 144. The hinge structure 144 is installed between the lifting rod structure and the mounting seat 141, that is, the hinge structure 144 is installed at both ends of the cross bar 1421. The output end of the third driving member 143 is connected to the hinge structure 144. The third driving member 143 pushes and pulls the hinge structure 144, and the hinge structure drives the cross bar 1421, so that the lifting rod structure can lift and press down relative to the mounting seat 141. Since each lifting rod structure has its own third driving structure, the three lower pressing sun gear sets 142 can lift and press down individually or synchronously.

[0036] A first guide rail 15 is provided on the frame 1. The first guide rail 15 extends along a direction perpendicular to the paper conveying direction. A first slider 16 is provided on the mounting seat 141. The first slider 16 and the first guide rail 15 are slidably matched with each other. A belt structure 18 is also provided on the frame 1 along the first guide rail 15. A fourth driving member 17 is provided on the frame 1 to drive the belt structure 18 to drive. A synchronous pulley matched with the belt structure 18 is provided on the first slider 16, so that the cooperation between the belt structure 18 and the synchronous pulley assists the mounting seat 141 to move horizontally, and finally realizes the reciprocating horizontal movement of the positioning assembly 14.

[0037] A second guide rail 19 is provided on the frame 1. The support seat 3 is provided with a second slider 20 slidably matched with the second guide rail 19. The paper conveying direction is positioned longitudinally, and the second guide rail 19 is arranged along the transverse direction. The second sliders 20 are distributed at the four corners of the support seat 3. At the same time, racks are arranged in the same direction on the second guide rail 19, and the second sliders 20 are correspondingly provided with gears matched with the racks, so that the sliding of the second sliders 20 is more stable. Finally, the support seat 3 can reciprocate along the second guide rail 19, realizing the reciprocating horizontal translation of the printing assembly 2. The printing assembly 2 and the positioning assembly 14 can move horizontally synchronously or separately.

[0038] The positioning assembly 14 further includes a sensor 145. The sensor 145 is arranged on the mounting seat 141. Each cross bar 1421 corresponds to a sensor 145, which is used to sense the action of the cross bar 1421 to realize the coordinated operation of the whole machine automatically. The sensor 145 in this embodiment is a conventional contact sensor 145, and the specific model and working principle are not described in detail here.

[0039] The above-mentioned first driving member 9, second driving member 12 and third driving member 143 can be cylinders, hydraulic cylinders or motors.

[0040] In this embodiment, the positioning component 14 adopts a sun gear structure to press down on the paper sheet to achieve positioning. Of course, the positioning component 14 can also adopt a vacuum negative pressure positioning structure, that is, through holes are opened on the support base 3 or the tabletop 4, and a vacuum pumping structure is arranged inside or at the bottom of the through holes. The through holes are evacuated to generate negative pressure to adsorb the paper sheet, thereby realizing the positioning of the paper sheet. The specific structure and principle of the vacuum negative pressure positioning structure are conventional technical means and will not be elaborated here.

[0041] In this embodiment, the first driving structure and the second driving structure adopt a gear transmission structure. Of course, it can also be replaced with other mechanical transmission structures, such as chain, belt, crank connecting rod, hydraulic, pneumatic, universal joint, etc. Since they are conventional technical means, the specific structure and working principle will not be elaborated here.

[0042] The present utility model is not limited to the above-mentioned best embodiment. Any person can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as it has a technical solution that is the same as or similar to the present application, it falls within the protection scope of the present utility model.

Claims

1. An inkjet printing device, characterized in that, It includes a frame (1), on which an inkjet printing assembly (2) and a positioning assembly (14) are provided. A support base (3) is also provided on the frame (1). A tabletop (4) for placing the paper piece to be printed is formed on the support base (3). A conveying assembly for conveying the paper piece to be printed is provided on the support base (3). The positioning assembly (14) is used to position the paper piece to be printed. The nozzle (21) of the inkjet printing assembly (2) is located below the paper piece to be printed and performs inkjet printing on the paper piece to be printed from bottom to top.

2. The inkjet printing device according to claim 1, wherein, The conveying assembly includes a conveying roller rotatably connected to the support base (3) and a first driving structure for driving the conveying roller to rotate.

3. The inkjet printing device according to claim 1, characterized in that, The first driving structure includes a first driving member (9) and a first gear transmission structure (10). The output end of the first driving member (9) is connected to the roller body of the conveying roller through the first gear transmission structure (10). The conveying roller includes a first conveying roller (6), a second conveying roller (7) and a third conveying roller (8). The three conveying rollers are arranged in sequence along the conveying direction of the paper piece to be printed in parallel. The three conveying rollers are synchronously rotated through the first gear transmission structure (10).

4. A printing device according to claim 3, characterized in that, An operation opening (41) is formed in the tabletop (4) between the second conveying roller (7) and the third conveying roller (8). The nozzle (21) of the inkjet printing assembly (2) is installed upward below the operation opening (41). When the paper piece to be printed passes above the nozzle (21), inkjet printing is performed on the paper piece to be printed.

5. A spraying device according to claim 3, characterized in that, A brush roller (11) is provided on the support base (3) between the first conveying roller (6) and the second conveying roller (7).

6. The inkjet printing device according to claim 3, wherein, A dust suction opening (42) is formed in the tabletop (4) between the operation opening (41) and the second conveying roller (7). A dust suction structure (5) is provided on the support base (3) below the dust suction opening (42) to remove dust from the paper piece to be printed passing through the dust suction opening (42).

7. A printing device according to claim 3, characterized in that, A second driving structure for driving the inkjet printing assembly (2) to perform translation is also provided on the support base (3). The second driving structure includes a second driving member (12) and a second gear transmission structure (13). The second gear transmission structure (13) includes a rack and a gear structure. The rack is horizontally arranged on the support base (3). The gear structure is installed on the inkjet printing assembly (2) and meshes with the rack. The output end of the second driving member (12) is connected to and drives the gear structure to move along the extending direction of the rack, so as to realize the lateral displacement of the inkjet printing assembly (2).

8. A printing device according to claim 1, characterized in that, The positioning assembly (14) includes a mounting seat (141) that can reciprocate along the direction perpendicular to the conveying direction of the conveying roller. A sun gear (1423) for pressing down is provided on the mounting seat (141). The mounting seat (141) is movably connected with a lifting rod structure for fixing the sun gear (1423). A plurality of sun gears (1423) are distributed along the length direction of the conveying roller.

9. A printing device according to claim 8, characterized in that, A lifting rod structure and a plurality of sun gears (1423) located thereon form a downward pressing sun gear set (142). A set of downward pressing sun gear sets (142) are respectively provided corresponding to the upper sides of the first conveying roller (6), the second conveying roller (7) and the brush roller (11). A third driving structure is provided between each lifting rod structure and the mounting seat (141). The third driving structure includes a third driving member (143) and a hinge structure (144). The hinge structure (144) is installed between the lifting rod structure and the mounting seat (141). The output end of the third driving member (143) is connected to the hinge structure (144), so that the lifting rod structure can perform lifting and pressing actions relative to the mounting seat (141).

10. A printing device according to claim 8, characterized in that, A first guide rail (15) is provided on the frame (1). The mounting seat (141) is provided with a first slider (16) that slidably cooperates with the first guide rail (15). A belt structure (18) and a fourth driving member (17) for driving the belt structure (18) to transmit power are further provided on the frame (1). A synchronous pulley that cooperates with the belt structure (18) is provided on the first slider (16). A second guide rail (19) in the same direction as the first guide rail (15) is further provided on the frame (1). The support seat (3) is provided with a second slider (20) that slidably cooperates with the second guide rail (19).

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