A digital printing apparatus and a printing method thereof

Abstract

The application discloses a digital printing equipment and a printing method thereof, and relates to the technical field of printing equipment, which comprises a machine table, a receiving groove is formed in the middle of the machine table, an adjusting motor is fixedly installed at one end of the inner wall of the receiving groove, an installation frame is fixedly connected to the output end of the adjusting motor, a direction adjusting motor is fixedly installed in the installation frame, a nozzle frame is fixedly connected to the output end of the direction adjusting motor, a printing nozzle is fixedly installed in the middle of the nozzle frame, and a dust removal mechanism for dust removal and cleaning of a printing object is fixedly installed on one side of the machine table; the direction adjusting motor drives the nozzle frame to rotate, thereby realizing the adjustment of the direction of the printing nozzle; the adjusting motor drives the installation frame to rotate, so that the printing nozzle can meet the printing needs of different surfaces and different angles of the printing object, and the device has better use flexibility.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing equipment, in particular to a digital printing equipment and a printing method thereof. BACKGROUND

[0002] When the digital printing machine prints the printed matter, first, the pattern to be printed is set, the operator adjusts the printing position of the pattern and the printed matter according to the actual size of the printed matter, and sets the printing quantity, then the printing object enters the inside of the printing machine from one end of the feeding port, and the inkjet device sprays ink on the printed matter according to the set program and the pattern.

[0003] With the development of packaging technology, different types of packaging materials bring different printing needs, such as printing on different surfaces or inclined surfaces of the materials. However, the existing printing equipment has a fixedly arranged printing nozzle, which is difficult to meet the diversified printing needs, and therefore it is necessary to improve it. SUMMARY

[0004] The present application relates to the technical field of printing equipment, in particular to a digital printing equipment and a printing method thereof.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A digital printing equipment, comprising a machine table, a receiving groove is formed in the middle of the machine table, an adjusting motor is fixedly installed at one end of the inner wall of the receiving groove, an installation frame is fixedly connected to the output end of the adjusting motor, the end of the installation frame away from the adjusting motor is rotatably connected to the inner wall of the receiving groove, a direction adjusting motor is fixedly installed in the installation frame, a nozzle frame is fixedly connected to the output end of the direction adjusting motor, a printing nozzle is fixedly installed in the middle of the nozzle frame, a dust removal mechanism for dust removal and cleaning of the printing object is fixedly installed on one side of the machine table, and a drying device for rapid drying of the printed printing object is fixedly installed on the other side of the top of the machine table.

[0007] As a further scheme of the present application: a nozzle cleaning mechanism for cleaning the printing nozzle is fixedly installed in the middle of the inner wall of the receiving groove, the nozzle cleaning mechanism comprises a housing, a linear motor is fixedly installed in the housing, a docking cover is fixedly connected to the output end of the linear motor, water inlet pipes are fixedly connected to both ends of the inner wall of the docking cover, water outlet pipes are arranged on one side of the two water inlet pipes, one end of the two water inlet pipes is communicated through a water inlet three-way adjusting valve, the water inlet end of the water inlet three-way adjusting valve is communicated with an external water source through a communication pipe, one end of the two water outlet pipes is communicated through a water outlet three-way adjusting valve, and the water outlet end of the water outlet three-way adjusting valve is communicated with the outside through a communication pipe.

[0008] As a further scheme of the present application, a sweeping rod is rotatably connected to the middle part of the inner part of the docking cover, and a sweeping soft pad is fixedly connected to the outer wall of the sweeping rod.

[0009] As a further scheme of the present application, a sealing gasket is fixedly connected to the edge of the inner wall of the docking cover, and a docking groove is formed in the side wall of the printing nozzle, and the sealing gasket is arranged in correspondence with the docking groove.

[0010] As a further scheme of the present application, a through groove is formed in the inner wall bottom of the receiving groove, a through pipe is fixedly connected below the through groove, a hot air pipe is fixedly connected to one side of the through pipe, one end of the hot air pipe is fixedly connected to the output end of an external hot air device, a flow guide block is fixedly connected to the inner wall of the through pipe, and one side of the flow guide block is arranged in an inclined manner.

[0011] As a further scheme of the present application, the dust removal mechanism comprises a supporting table, one side of the supporting table close to the receiving groove is arranged in an inclined manner, a cleaning frame is fixedly connected to the top of the inclined surface, two cleaning rollers arranged in an up-down manner are rotatably installed in the inner part of the cleaning frame, a dust outlet is formed in the middle part of the inclined surface, a dust sweeping frame is arranged on one side of the dust outlet, and two dust sweeping rods arranged in an up-down manner are rotatably installed in the inner wall of the dust sweeping frame.

[0012] As a further scheme of the present application, a supporting net is fixedly installed in the inner wall of the dust outlet, a dust suction assembly is fixedly installed below the dust outlet, the dust suction assembly comprises a dust suction cover plate, a flow guide fan is fixedly installed on one side of the dust suction cover plate, the flow guide fan is arranged in an inclined manner towards the direction of the dust outlet, and a dust collecting net frame is snap-connected to the bottom of the dust suction cover plate.

[0013] As a further scheme of the present application, a tensioning assembly is arranged on one side of the top of the supporting table, the tensioning assembly comprises a jacking air cylinder, an output end of the jacking air cylinder is fixedly connected with a movable plate, a jacking frame is arranged above the movable plate, a buffer spring is fixedly connected between the movable plate and the jacking frame, and a jacking roller is rotatably installed on the top of the jacking frame.

[0014] As a further scheme of the present application, a vibration cavity is formed in the inner part of the jacking frame, a vibration motor is fixedly installed in the inner part of the vibration cavity, an output end of the vibration motor is fixedly connected with a vibration block, and the vibration block is an eccentric cam arranged eccentrically with the output shaft of the vibration motor.

[0015] A printing method of a digital printing device, comprising the following steps:

[0016] Step one: rotate the nozzle frame by the steering motor to make the printing nozzle face the object to be printed.

[0017] Step two: the cleaning of the printing material is carried out by the contact of the cleaning roller and the dust-sweeping contact pad in the dust-removing mechanism and the printing material moved by the traction equipment outside;

[0018] Step three: the dust and impurities cleaned are collected by the dust-sucking component in the dust-removing mechanism through the starting of the air guide fan;

[0019] Step four: the printing is completed by the ink sprayed from the printing nozzle when the printing material passes through the printing nozzle;

[0020] Step five: the drying of the printing ink is completed through the starting of the drying device.

[0021] Compared with the prior art, the beneficial effects of the present application are that the printing nozzle direction is adjusted by the rotation of the nozzle frame driven by the direction-adjusting motor, and the installation frame is rotated by the adjusting motor, so that the printing nozzle of the present application can realize the printing needs of different surfaces and different angles of the printing material, and the device has better use flexibility.

[0022] The water flow in the docking cover can realize reciprocating washing motion by setting two water inlet pipes and two water outlet pipes and changing the water inlet and outlet directions through the three-way adjusting valve, and the printing nozzle is rubbed and swept by the contact of the cleaning motor-driven sweeping soft pad, so that the solidified ink and the attached dust and impurities on the nozzle are effectively washed and removed.

[0023] The height of the jacking roller is adjusted by the jacking cylinder, the jacking roller is used to support the printing material, the tensioning degree of the printing material is adjusted, the vibration motor and other structures are arranged, the jacking frame is vibrated, and then the jacking roller and the printing material in contact with the jacking roller are vibrated, so that the dust and impurities thereon are separated. DETAILED DESCRIPTION

[0024] Figure 1 It is a perspective view of the present application;

[0025] Figure 2 It is a sectional view of the nozzle cleaning mechanism of the present application;

[0026] Figure 3 It is a position structure schematic view of the air guide pipe of the present application;

[0027] Figure 4 It is a sectional view of the dust-sucking component of the present application;

[0028] Figure 5 It is a sectional view of the tensioning component of the present application;

[0029] Figure 6 The schematic diagram of the structure of the mounting rack of the present application;

[0030] Figure 7 The schematic diagram of the state of the mounting rack of the present application when it is lifted.

[0031] In the figure: 1, machine table; 2, storage groove; 301, mounting rack; 302, adjusting motor; 303, steering motor; 4, spray head rack; 5, printing spray head; 6, spray head cleaning mechanism; 601, shell; 602, linear motor; 603, butt joint cover; 604, sealing washer; 605, water outlet pipe; 606, water inlet pipe; 607, cleaning motor; 608, sweeping rod; 701, through pipe; 702, flow guide block; 703, hot air pipe; 8, tensioning assembly; 801, jacking frame; 802, jacking rotating roller; 803, vibration motor; 804, vibration block; 805, movable plate; 806, buffer spring; 807, jacking air cylinder; 9, dust suction assembly; 901, dust suction cover plate; 902, flow guide fan; 903, supporting net; 904, dust outlet; 905, dust collection net rack; 10, cleaning frame; 11, cleaning rotating roller; 12, dust sweeping frame; 13, dust sweeping rod; 14, dust sweeping contact pad; 15, supporting table; 16, drying device. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to Figure 1 In the embodiments of the present application, a digital printing device comprises a machine table 1, a storage groove 2 is formed in the middle of the machine table 1, an adjusting motor 302 is fixedly installed at one end of the inner wall of the storage groove 2, please refer to Figure 6The output end of the adjusting motor 302 is fixedly connected with a mounting frame 301, the end of the mounting frame 301 away from the adjusting motor 302 is rotationally connected with the inner wall of the receiving groove 2, the inside of the mounting frame 301 is fixedly installed with a direction adjusting motor 303, the output end of the direction adjusting motor 303 is fixedly connected with a nozzle frame 4, and the middle part of the nozzle frame 4 is fixedly installed with a printing nozzle 5; the direction adjusting motor 303 drives the nozzle frame 4 to rotate, so that the direction of the printing nozzle 5 is adjusted, and the adjusting motor 302 drives the mounting frame 301 to rotate, so that the printing nozzle 5 can meet the printing needs of different surfaces and different angles of the printing object; when the bottom surface of the printing object needs to be printed, the mounting frame 301 is kept in a flat storage state in the receiving groove 2, and the nozzle frame 4 is driven by the direction adjusting motor 303 to rotate, so that the printing nozzle 5 is upward; when the surface of the printing object to be printed is the top surface, before the printing object is sent into the machine table 1, the mounting frame 301 is driven by the adjusting motor 302 to rotate and lift, and the nozzle frame 4 is driven by the direction adjusting motor 303 to rotate, so that the printing nozzle 5 is downward, please refer to Figure 7 at this time, the printing object passes below the printing nozzle 5, and the printing nozzle 5 can realize printing on the top surface of the printing object; when the surface to be printed of the printing object is an inclined surface, the printing nozzle 5 is driven by the direction adjusting motor 303 to be inclined before the printing object is sent into the machine table 1, so that the printing nozzle 5 is parallel to the surface to be printed, and the inclined surface of the printing object is printed;

[0034] Because the ink solidified on the printing nozzle 5 and the dust and impurities attached to the printing nozzle 5 after long-term use are easy to cause the printing nozzle 5 to be blocked, it is necessary to clean, please refer to Figure 2 The inner wall of the receiving groove 2 is fixedly installed with a nozzle cleaning mechanism 6 for cleaning the printing nozzle 5, the nozzle cleaning mechanism 6 comprises a shell 601, the inside of the shell 601 is fixedly installed with a linear motor 602, the output end of the linear motor 602 is fixedly connected with a docking cover 603, the inner wall of the docking cover 603 is fixedly connected with a water inlet pipe 606 at both ends, one side of the two water inlet pipes 606 is provided with a water outlet pipe 605, the docking cover 603 is driven by the linear motor 602 to move forward and is docked with the printing nozzle 5, the water inlet pipe 606 sends water and the water outlet pipe 605 discharges water, so that the water in the docking cover 603 flows, and the printing nozzle 5 is washed and cleaned;

[0035] One end of the two water inlet pipes 606 is communicated through a water inlet three-way regulating valve, the water inlet end of the water inlet three-way regulating valve is communicated with an external water source through a communication pipe, one end of the two water outlet pipes 605 is communicated through a water outlet three-way regulating valve, and the water outlet end of the water outlet three-way regulating valve is communicated with the outside through a communication pipe, by providing the two water inlet pipes 606 and the two water outlet pipes 605 and changing the water inlet and outlet directions through the three-way regulating valve, the water flow in the docking cover 603 can realize reciprocating washing movement, and the cleaning effect of the printing nozzle 5 is effectively improved.

[0036] In order to further realize the effective cleaning of the solidified ink and the like dirt, a sweeping rod 608 is rotationally connected in the middle of the inner part of the docking cover 603, the outer wall of the sweeping rod 608 is fixedly connected with a sweeping soft pad, the sweeping soft pad is a water-absorbing sponge pad, one end of the sweeping rod 608 is provided with a cleaning motor 607 for driving the sweeping rod 608 to rotate, the sweeping soft pad is driven by the cleaning motor 607 to contact and rub the printing nozzle 5 to remove the adhered dirt.

[0037] In order to avoid that the water flow is sprayed and dispersed into the storage groove 2 during the cleaning process, a sealing washer 604 is fixedly connected to the inner wall edge of the docking cover 603, a docking groove is formed in the side wall of the printing nozzle 5, and the sealing washer 604 is correspondingly arranged in the docking groove. During the cleaning, the docking cover 603 is docked with the printing nozzle 5, and the sealing washer 604 is clamped with the docking groove.

[0038] Please refer to Figure 3 , a through groove is formed in the inner wall bottom of the storage groove 2, a through pipe 701 is fixedly connected below the through groove, a hot air pipe 703 is fixedly connected to one side of the through pipe 701, one end of the hot air pipe 703 is fixedly connected with the output end of an external hot air equipment, a flow guide block 702 is fixedly connected to the inner wall of the through pipe 701, and one side of the flow guide block 702 is obliquely arranged. By arranging the flow guide block 702, the water flow remaining in the storage groove 2 is discharged in real time, and the hot air pipe 703 is used to send hot air to the position of the printing nozzle 5 to assist the rapid drying of the cleaned printing nozzle 5.

[0039] One side of the machine table 1 is fixedly installed with a dust removal mechanism for dust removal and cleaning of the printing substrate, and the other side of the top of the machine table 1 is fixedly installed with a drying device 16 for rapid drying of the printed printing substrate. The drying device 16 is implemented by using the existing technical means.

[0040] Please refer to Figure 1 and Figure 4 , the dust removal mechanism comprises a supporting table 15, one side of the supporting table 15 close to the storage groove 2 is provided as an inclined surface, the top of the inclined surface is fixedly connected with a cleaning frame 10, two upper and lower arranged cleaning rollers 11 are rotationally installed in the inner part of the cleaning frame 10, the dust and impurities on both sides of the printing substrate are cleaned through the rotation of the cleaning rollers 11, a dust outlet 904 is formed in the middle of the inclined surface, a dust sweeping frame 12 is arranged on one side of the dust outlet 904, two upper and lower arranged dust sweeping rods 13 are rotationally installed in the inner wall of the dust sweeping frame 12, a plurality of dust contact pads 14 are fixedly connected to the outer wall of the dust sweeping rods 13, one end of each of the two dust sweeping rods 13 is fixedly connected with a locking bolt, the dust sweeping rods 13 are fixed through the locking bolts to ensure the stable contact of the dust contact pads 14 with the printing substrate, and the plurality of dust contact pads 14 have a plurality of different sizes and shapes to realize the stable contact sweeping of different printing substrates.

[0041] The inner wall of the dust outlet 904 is fixedly installed with a supporting net 903, so as to avoid the increase of the friction resistance of the conveying caused by the falling of the printing substrate into the dust outlet 904 under the influence of gravity, and also to enable the dust cleaned by the cleaning roller 11 to fall into the dust suction cover through the mesh. A dust suction assembly 9 is fixedly installed below the dust outlet 904, and the dust suction assembly 9 comprises a dust suction cover plate 901. In order to facilitate the collection and discharge of the dust and debris, a guide fan 902 is fixedly installed on one side of the dust suction cover plate 901, and the guide fan 902 is obliquely arranged towards the direction of the dust outlet 904. The bottom of the dust suction cover plate 901 is clampedly connected with a dust collecting net rack 905.

[0042] Please refer to Figure 1 and Figure 5 In order to realize the tensioning of the printing substrate, a tensioning assembly 8 is arranged on one side of the top of the supporting table 15, and the tensioning assembly 8 comprises a jacking cylinder 807. The output end of the jacking cylinder 807 is fixedly connected with a movable plate 805. The top of the jacking cylinder 807 is rotatably installed with a jacking roller 802. The height of the jacking roller 802 is adjusted by the jacking cylinder 807. The jacking roller 802 supports the printing substrate, and the tensioning degree of the printing substrate is adjusted.

[0043] The inside of the jacking frame 801 is provided with a vibration cavity. The vibration cavity is fixedly installed with a vibration motor 803. The output end of the vibration motor 803 is fixedly connected with a vibration block 804. The vibration block 804 is an eccentric cam arranged eccentrically with the output shaft of the vibration motor 803. The vibration motor 803 and other structures are arranged to drive the jacking frame 801 to vibrate, and then drive the jacking roller 802 and the printing substrate in contact with the jacking roller 802 to vibrate, so as to facilitate the separation of dust and impurities thereon.

[0044] In use, first, the mounting frame 301 is driven to move by adjusting the motor 302, and the nozzle frame 4 is driven to rotate by cooperating with the steering motor 303, so that the printing nozzle 5 faces the printing substrate to be printed. The printing substrate is moved by an external traction device. One end of the printing substrate sequentially passes between the two cleaning rollers 11, passes between the supporting net 903 and the dust outlet 904, and then passes between the two dust sweeping rods 13, passes through the storage groove 2 and the position of the printing nozzle 5, and finally passes through the drying device 16 and is sent out.

[0045] When passing through the cleaning roller 11, the dust attached to the printing substrate is removed by the friction cleaning of the cleaning roller 11, and then the printing substrate is cleaned by the contact of the dust removal contact pad 14 with the printing substrate. The dust and impurities obtained by the cleaning are dropped into the dust suction assembly 9 through the dust outlet 904; the dust suction assembly 9 is started by the guide fan 902 to generate a suction negative pressure at the dust outlet, so that the dust and impurities obtained by the cleaning are sucked into the dust suction plate 901 and collected and temporarily stored by the dust collection rack 905; when the printing substrate passes through the printing head 5, the printing is completed by the ink ejected from the printing head 5; the printing substrate after completing the printing passes through the drying device 16 to complete the drying of the printing ink.

[0046] When the printing head 5 needs to be cleaned, the mounting frame 301 is received and laid in the receiving groove 2 by the adjusting motor 302, the head frame 4 is rotated by the adjusting motor 303 to make the printing head 5 face the docking cover 603, the docking cover 603 is docked with the printing head 5 by the linear motor 602, the water flow is transported to the water inlet pipe 606 by the external water inlet pump, and then discharged through the water outlet pipe 605, at the same time, the cleaning motor 607 drives the sweeping rod 608 to rotate and drive the sweeping soft pad to rotate to clean the head, after the cleaning is completed and the excess water is discharged, the linear motor 602 drives the docking cover 603 to reset; then the external hot air equipment sends hot air to the guide pipe through the hot air pipe 703 to dry the printing head 5 and the receiving groove 2 for subsequent use.

[0047] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A digital printing device, characterized in that, The machine includes a machine base (1), a storage slot (2) is provided in the middle of the machine base (1), an adjustment motor (302) is fixedly installed at one end of the inner wall of the storage slot (2), a mounting bracket (301) is fixedly connected to the output end of the adjustment motor (302), a directional motor (303) is fixedly installed inside the mounting bracket (301), a nozzle frame (4) is fixedly connected to the output end of the directional motor (303), a printing nozzle (5) is fixedly installed in the middle of the nozzle frame (4), and a dust removal mechanism for cleaning the printing substrate is fixedly installed on one side of the machine base (1). The inner wall of the storage slot (2) is fixedly installed with a nozzle cleaning mechanism (6) for cleaning the printing nozzle (5). The nozzle cleaning mechanism (6) includes a housing (601). A linear motor (602) is fixedly installed inside the housing (601). A docking cover (603) is fixedly connected to the output end of the linear motor (602). Water inlet pipes (606) are fixedly connected to both ends of the inner wall of the docking cover (603). Water outlet pipes (605) are provided on one side of each of the two water inlet pipes (606). A sealing gasket (604) is fixedly connected to the inner edge of the docking cover (603). A docking groove is opened on the side wall of the printing nozzle (5). The sealing gasket (604) is correspondingly set to the docking groove. The storage slot (2) has a through slot at the bottom of its inner wall. A guide pipe (701) is fixedly connected to the bottom of the through slot. A hot air pipe (703) is fixedly connected to one side of the guide pipe (701). A guide block (702) is fixedly connected to the inner wall of the guide pipe (701). One side of the guide block (702) is inclined. The dust removal mechanism includes a support platform (15), and a tensioning component (8) is provided on one side of the top of the support platform (15). The tensioning component (8) includes a lifting cylinder (807), and a movable plate (805) is fixedly connected to the output end of the lifting cylinder (807). A lifting frame (801) is provided above the movable plate (805), and a buffer spring (806) is fixedly connected between the movable plate (805) and the lifting frame (801). A lifting roller (802) is rotatably installed on the top of the lifting frame (801). The lifting frame (801) has a vibration chamber inside, and a vibration motor (803) is fixedly installed inside the vibration chamber. The output end of the vibration motor (803) is fixedly connected to a vibration block (804).

2. The digital printing equipment according to claim 1, characterized in that, A sweeping rod (608) is rotatably connected to the inner center of the docking cover (603), and a sweeping pad is fixedly connected to the outer wall of the sweeping rod (608). A cleaning motor (607) is provided at one end of the sweeping rod (608).

3. The digital printing equipment according to claim 1, characterized in that, The support platform (15) is set as an inclined surface on the side near the storage groove (2). A cleaning rack (10) is fixedly connected to the top of the inclined surface. A cleaning roller (11) is rotatably installed inside the cleaning rack (10). A dust outlet (904) is opened in the middle of the inclined surface. A dust sweeping rack (12) is set on one side of the dust outlet (904). A dust sweeping rod (13) is rotatably installed on the inner wall of the dust sweeping rack (12). Several dust sweeping contact pads (14) are fixedly connected to the outer wall of the dust sweeping rod (13).

4. A digital printing device according to claim 3, characterized in that, A support net (903) is fixedly installed on the inner wall of the dust outlet (904), and a dust collection assembly (9) is fixedly installed below the dust outlet (904). The dust collection assembly (9) includes a dust collection hood (901), a guide fan (902) is fixedly installed on one side of the dust collection hood (901), and a dust collection net frame (905) is snapped into the bottom of the dust collection hood (901).

5. A printing method for a digital printing apparatus according to any one of claims 1-4, characterized in that, Includes the following steps: Step 1: The nozzle holder (4) is rotated by the directional motor so that the printing nozzle (5) faces the object to be printed; Step Two: The dust removal mechanism comes into contact with the printing substrate to clean it; Step 3: The dust and impurities collected during cleaning are drawn in and collected by the dust removal mechanism; Step 4: When the substrate passes through the printing nozzle (5), ink is ejected from the printing nozzle (5) to complete the printing process; Step 5: Dry the printing ink.

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