Ink-jet printing head anti-leakage device integrated in industrial robot system

Abstract

An ink-jet printing head anti-leakage device integrated on an industrial robot system belongs to the technical field of printer matching, and is provided with a cleaning liquid box mechanism, a recovery processing mechanism and an ink collecting mechanism, a nozzle of a printing nozzle of an ink-jet printer body is located on the upper side, and the ink collecting mechanism comprises a recovery tank and a liquid pipe. The recovery processing mechanism comprises an electromagnetic valve, a semiconductor refrigeration device, an electric heating plate and a box body, the cleaning fluid box mechanism comprises a box body A, an electromagnetic valve A, a peristaltic pump and a one-way air valve, and the cleaning fluid box mechanism, the recovery processing mechanism and the ink collecting mechanism are installed in a shell matched with the ink-jet printer body. When the nozzle discharges ink and performs printing, the ink can be collected into the recycling box, after each time of printing, the ink flow channel of the printing nozzle and the interior of the nozzle of the nozzle can be cleaned, cleaning liquid can be recycled after cleaning, and therefore it is guaranteed that the printer body can be normally used, and waste of materials such as the ink is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary mechanisms for printing devices, and particularly to an anti-leakage device for an inkjet print head integrated into an industrial robot system. Background Art

[0002] The structure of an inkjet printer based on a PLC-controlled multi-axis robot mainly includes an industrial robot, a PLC, an inkjet printing mechanism, an ink cartridge, etc. During operation, under the control of the PLC program, the industrial robot performs inkjet printing on the substrate from top to bottom through the nozzle. During printing, the inkjet printing mechanism pumps out the ink in the ink cartridge through an electric pump to print on the substrate.

[0003] Although the existing inkjet printers based on PLC-controlled multi-axis robots can meet the printing work requirements to a certain extent, due to structural limitations, there are still the following technical drawbacks. (1): The nozzle of the inkjet printer head (piezoelectric print head) is located at the lower end, and it can only print on the substrate (paper, advertising cloth, etc.) from top to bottom. This brings a problem that when printing stops, the ink adhering to the lower side of the nozzle of the print head has a chance of dripping onto the upper end of the printed substrate, which has an adverse impact on the quality of the printed substrate. Moreover, during the use of the piezoelectric print head, a certain amount of ink needs to be discharged regularly to ensure the smoothness of the ink channels inside the print head and to discharge excess air. However, due to the special installation direction of the nozzle of the print head, during the ink discharge process, the ink is inevitably affected by the gravity factor and will leak along the periphery of the nozzle of the print head. Once the leaked ink flows into the device, it will damage the circuit in the device, and at the same time, it will also contaminate other components of the printing device, greatly increasing the equipment maintenance cost. Not only that, after the leaked ink dries up, it may also cause blockages in the nozzle of the print head, seriously affecting the printing accuracy and quality and reducing the printing efficiency. (2): It cannot automatically clean the nozzle of the print head and the corresponding pipelines. After a long time of use, there is a chance that the nozzle of the print head is partially or completely blocked, affecting the printing work. Moreover, the discharged ink cannot be reused, resulting in unnecessary material waste. In summary, it is particularly necessary to provide an anti-leakage device for an inkjet print head that can reduce the adverse effects of ink on the device and enable the discharged ink to be reused. Summary of the Invention

[0004] In order to overcome the drawbacks of existing inkjet printers based on multi-axis robot control, such as directly discharging ink due to structural limitations, which can affect the normal operation of the device and cause unnecessary waste, etc., the present invention provides an anti-leakage device for an inkjet print head integrated into an industrial robot system, which is used in cooperation with an inkjet printer body based on multi-axis robot control. The nozzles of the piezoelectric print head of the inkjet printer body are distributed from bottom to top. While the ink is discharged and printed from the nozzles of the piezoelectric print head, the discharged ink and the ink falling during printing can be collected, and after each printing, the ink flow channel of the piezoelectric print head and the nozzles of the print head itself can be cleaned, and the cleaning liquid and ink can be reused after cleaning, thereby ensuring the normal use of the printer body and reducing the waste of materials such as ink.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: An anti-leakage device for an inkjet print head integrated into an industrial robot system, which has a cleaning liquid tank mechanism, a recovery and treatment mechanism, and an ink collection mechanism. The nozzles of the print head of the inkjet printer body are located on the upper side, and retaining rings are fixedly installed around the nozzles, and drain holes are respectively provided on both sides of the retaining rings; the ink collection mechanism includes a recovery tank and a recovery pipe. There is an opening in the middle of the recovery tank, a diversion groove is provided at the open side end of the recovery tank, and drain holes A are respectively provided on both sides of the diversion groove at the opening. A recovery pipe is fixedly installed at the lower part of one outer side end of the recovery tank. The recovery tank is fixedly installed on the print head, and the drain hole and the drain hole A are communicated; the recovery and treatment mechanism includes a solenoid valve, a semiconductor refrigeration device, an electric heating plate, and a box body. The box body is divided into a recovery box and a treatment box. There are multiple solenoid valves. The electric heating plate is fixedly installed at the lower outer side end of the recovery box, and the semiconductor refrigeration device is fixedly installed at the outer side end of the treatment box; a connecting pipe is fixedly installed outside the upper end of the recovery box, and the upper end of the connecting pipe is fixedly connected in parallel with one end of the first solenoid valve and the second solenoid valve respectively. A connecting pipe A is fixedly installed at the upper end of the treatment box. The other ends of the first solenoid valve and the second solenoid valve, one end of the recovery pipe, and one end of the connecting pipe A are fixedly connected respectively. A drain pipe is fixedly installed at one lower side end of the treatment box, and an output pipe is fixedly installed at one lower side end of the recovery box. One side end of the output pipe is fixedly connected with one end of the third solenoid valve; the cleaning liquid tank mechanism includes a box body A, a solenoid valve A, a peristaltic pump, and a one-way air valve. Branch pipes are respectively fixedly installed at the upper end and the lower part of one side end of the box body A. The upper side of the upper branch pipe is fixedly connected with the lower side of the drain pipe. The liquid inlet end of the peristaltic pump is fixedly connected with one side of the lower branch pipe; the one-way air valve is installed at the upper end of the box body A; the liquid outlet end of the peristaltic pump is fixedly connected with one end of the first solenoid valve A. The other end of the first solenoid valve A is fixedly connected in parallel with the liquid inlet pipe of the print head of the inkjet printer body and one end of the second solenoid valve A respectively. The other end of the second solenoid valve A is fixedly connected with the liquid output end of the ink cartridge electric pump of the inkjet printer body.

[0006] Further, the cleaning liquid tank mechanism, the recycling and treatment mechanism, and the ink collection mechanism are installed in the outer shell supporting the inkjet printer body, and the height of the box body is higher than that of box body A.

[0007] Further, the solenoid valve and solenoid valve A are normally closed spool solenoid valves.

[0008] Further, the lower end of the liquid discharge hole and the lower end of the nozzle are in the same plane.

[0009] Further, the electric heating plate is a finished constant temperature PTC electric heating plate.

[0010] Further, a sealing gasket is installed between the recycling tank and the nozzle.

[0011] Further, a liquid adding pipe is installed outside the upper end of the box body, and a sealing cover is installed on the liquid adding pipe.

[0012] Further, cleaning liquid is added into box body A.

[0013] Further, one-way air valves are installed at the upper ends of the recycling box and the treatment box.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention is used in cooperation with the inkjet printer body controlled by a multi-axis robot. The nozzles of the piezoelectric print head of the inkjet printer body are distributed from bottom to top. In this way, while the ink is discharged and printed from the nozzles of the piezoelectric print head, the discharged ink and the ink falling during printing can be collected into the recycling box at the left end of the box body, and after each printing, the ink flow channel of the piezoelectric print head and the nozzles of the print head itself can be cleaned. After cleaning, the cleaning liquid can be heated and evaporated by the electric heating plate, and then cooled and re-used in box body A. Thus, it is ensured that the printer body can be used normally and the waste of materials such as ink is reduced. In summary, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a partial planar structural schematic diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Figure 1 、 2As shown in the figure, an anti-leakage device for inkjet print head integrated in an industrial robot system is used in conjunction with an inkjet printer body 1 of a PLC-controlled multi-axis robot, and has a cleaning liquid tank mechanism, a recovery and processing mechanism, and an ink collection mechanism; the nozzles 1011 of the piezoelectric print head 101 of the inkjet printer body 1 are distributed from bottom to top and are located on the upper side, and a rectangular retaining ring 102 is integrally formed around the nozzle 1011, and a drainage hole 1021 is respectively provided in the middle of the left and right sides of the retaining ring 102; the ink collection mechanism includes a recovery groove 21 and a recovery pipe 25, the recovery groove 21 is a U-shaped structure, and has an opening 23 in the middle with an inner diameter slightly larger than the outer diameter of the retaining ring, and a through guide groove is provided at the side end of the opening 23 of the recovery groove 24, the middle of the two inner sides of the guide groove 24 is located at the opening, and there is a drainage hole A241 respectively. The lower part of the right end of the recovery groove 21 is fixedly installed with a recovery pipe 25. The recovery groove 21 is fixedly installed on the nozzle 101. The drainage hole 1021 and the lower end of the drainage hole A1021 are at the same height and are connected from left to right; the recovery and processing mechanism includes a solenoid valve 31, a semiconductor refrigeration device 32, an electric heating plate 33, and a box body. There is a hollow isolation plate (insulation) in the middle of the box body to divide the box body into two independent and isolated spaces as a recovery box 341 and a processing box 342. There are three solenoid valves 31, and the electric heating plate 33 is fixedly installed at the lower outer end of the recovery box 341. The semiconductor refrigeration device 32 is fixedly installed in the middle of the right outer end of the processing box 342 , and the cold end of the semiconductor refrigeration device 342 is close to the right outer end of the processing box 342; a connecting pipe 35 that is interconnected with the interior of the recovery box 342 is fixedly installed in the middle of the upper end outside, the upper end of the connecting pipe 35 is connected to the first end of the first three-way pipe through a threaded connection, the second end and the third end of the first three-way pipe are connected to the first solenoid valve 31 and one end of the second solenoid valve 31 through a pipe joint, respectively, a connecting pipe A36 that is interconnected with the interior of the processing box 342 is fixedly installed in the middle of the upper end, the other ends of the first solenoid valve 31 and the second solenoid valve 31 are fixedly connected to the lower end of the recovery pipe 25 and the upper end of the connecting pipe A36 through a threaded connection, and a drainage pipe 38 that is interconnected with the interior of the processing box 342 is fixedly installed at the lower end of the front left side , an output pipe 37 communicating with the inside of the recovery box 341 is fixedly installed in the middle of the lower left end, the outer end of the output pipe 37 is connected to one end of the third solenoid valve 31 through a thread, and an ink tube 39 is fixedly installed in the other end of the third solenoid valve 31 (the outer end is connected to the inlet pipe of the ink collection box located at the outer end of the inkjet printer body 1 through a pipeline); the cleaning liquid box mechanism includes a box body A41, a solenoid valve A42, a peristaltic pump 43, and a one-way air valve 44, and a branch pipe 45 communicating with the inside of the box body A41 is fixedly installed on the upper left part and the lower right part, respectively, the upper side of the upper branch pipe is connected to the lower side of the discharge pipe 38 through a pipeline, and the inlet end of the peristaltic pump 43 is connected to the outer side of the lower branch pipe 45 through a thread;The one-way air valve 44 (through which external air can enter the box body A) is installed outside the upper end of the box body A41, and the intake pipe of the one-way air valve 44 communicates with the inside of the box body A41; the liquid outlet end of the peristaltic pump 43 and one end of the first solenoid valve A42 are connected through a pipeline, the other end of the first solenoid valve A42 and the first end of the second three-way pipe are connected through a pipeline joint, the second end and the third end of the second three-way pipe are respectively connected to the liquid inlet pipe 1012 of the nozzle of the inkjet printer body and one end of the second solenoid valve A42 through pipelines, the other end of the second solenoid valve A42 and the liquid output end of the ink cartridge electric pump of the inkjet printer body 1 are connected through a pipeline, and the multi-channel power output end of the PLC and the power input ends of two of the solenoid valves 31, two solenoid valves A42, the semiconductor refrigeration device 32, and the peristaltic pump 43 are respectively connected through wires. The power input end of the third solenoid valve 31 is separately controlled by a power switch and connected to the power supply inside the inkjet printer body 1 through a wire.;

[0019] Figure 1 、 2 As shown in, the cleaning liquid tank mechanism, the recycling and treatment mechanism, and the ink collection mechanism are installed in the outer shell supporting the inkjet printer body, and the height of the box body 32 is higher than that of the box body A41. The three solenoid valves 31 and the two solenoid valves A42 are normally closed spool solenoid valves. The lower end of the liquid discharge hole 1021 and the lower end of the nozzle 1011 are on the same plane. The electric heating plate 33 is a finished constant temperature PT electric heating plate. A rectangular annular hollow sealing gasket 5 (for sealing) is installed between the recycling tank 21 and the nozzle 101. A liquid adding pipe 46 communicating with its inside is welded outside the upper end of the box body A41, and a sealing cover is installed on the liquid adding pipe 46 through threads. Cleaning liquid (such as banana water, alcohol) is added into the box body A41. One-way air valves A343 are installed at the upper ends of the recycling box 341 and the treatment box 342, which is beneficial to discharging the gas in the treatment box 341 and the recycling box 342.

[0020] Figure 1 、 2As shown in the figure, when the inkjet printer body 1 with a multi-axis robot controlled by a PLC is working, under the control of the PLC program, the industrial robot controls the nozzle 101 of its robotic arm to perform inkjet printing on the substrate from top to bottom. During printing, the inkjet printer body 1 pumps out the ink in the ink cartridge through an electric pump to print on the substrate; the above is a mature existing technology and will not be elaborated in this application. When the ink dropped by the nozzle 101 during printing of the present invention, and when a certain amount of ink is regularly discharged under the control of the PLC, due to the downward gravity, the ink will enter the recovery tank 21 through the liquid discharge hole 1021 of the retaining ring 102, and then through the diversion groove liquid discharge hole A241 of the recovery tank 21 and the recovery pipe 25, and enter the recovery box 341 through the first solenoid valve 31 with the valve core opened. After each printing operation is completed, the PLC will control the electric peristaltic pump 43 to be powered on for a period of time to pump out the cleaning liquid in the box A41 (after pumping out, the cleaning liquid in the treatment box 342 enters the box A), and then pump it into the nozzle inlet pipe 1012 of the inkjet printer body through the first solenoid valve A42 with the valve core opened (the second solenoid valve A42 is closed), and then spray out from the upper end of the nozzle 1011 of the nozzle. After the cleaning liquid flows in and out of the nozzle, it can clean the ink flow channel of the nozzle and the inside of the nozzle itself. After cleaning, the liquid enters the recovery box 341 through the first solenoid valve 21 with the valve core opened for treatment. The PLC controls the electric heating plate 33 to work for a period of time. After the electric heating plate 33 is powered on, it will emit heat to heat the liquid in the recovery box 341 (at about 80 °C). Thus, the banana water mixed in the ink will be evaporated into the treatment box, and only the ink remains in the recovery box later, and the electric heating plate stops heating. After the PLC controls the semiconductor refrigeration mechanism 32 to be powered on and work, it will cool the banana water vapor entering the recovery box (the actual temperature in the recovery box is about 20 °C), and then cool it into a liquid and flow out into the box A. When used next time, the reused banana water in the box A will be used for cleaning the nozzle of the nozzle, etc. Subsequently, the operator turns on the power input terminal of the third solenoid valve 31, and the ink collected in the recovery box 341 will flow out into an external ink collection box for other treatment (such as for other production of dyed cloth, as paint for painting, making labels, or the manufacturer recycles the ink for separation and treatment to generate new printing ink, achieving the effect of recycling and reducing waste).

[0021] Figure 1 、 2, through the above technical solution: In the present invention, the nozzles of the piezoelectric print head of the inkjet printer body are distributed from bottom to top. In this way, while the ink is discharged from the nozzles of the piezoelectric print head and printing is carried out, the discharged ink and the ink falling during printing can be collected into the recycling box at the left end of the box body (preventing ink leakage), and after each printing, the ink flow channels of the piezoelectric print head and the nozzles of the print head itself can be cleaned. After cleaning, the cleaning liquid can be heated and evaporated by the electric heating plate, and then cooled and enter the box body A to be reused again. Thus, it is ensured that the printer body can be used normally and the waste of materials such as ink is reduced. In practical applications, the PLC controls the working time of the electric heating plate, the first and second solenoid valves, the two solenoid valves A, the electric peristaltic pump, and the semiconductor refrigeration mechanism. The production technicians set it according to actual needs, and the time is such that the ink and the cleaning liquid can be collected during each printing and after inkjetting, and then the cleaning liquid is heated and evaporated and cooled for reuse.

[0022] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.

[0023] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-leakage device for an inkjet print head integrated in an industrial robot system, characterized in that: The invention is provided with a cleaning liquid tank mechanism, a recycling and processing mechanism, and an ink collecting mechanism. The nozzle of the printing nozzle of the inkjet printer body is located on the upper side, and retaining rings are fixedly installed around the nozzle, and drainage holes are respectively provided on both sides of the retaining ring; the ink collecting mechanism includes a recycling groove and a recycling pipe, the recycling groove has an opening in the middle, and a guide groove is provided on the side end of the opening of the recycling groove, and drainage holes A are respectively provided on both sides of the guide groove at the opening, and a recycling pipe is fixedly installed at the lower part of one outer end of the recycling groove, and the recycling groove is fixedly installed on the nozzle, and the drainage hole and the drainage hole A are connected; the recycling and processing mechanism includes a solenoid valve, a semiconductor refrigeration device, an electric heating plate, and a box body, and the box body is divided into a recycling box and a processing box, and there are multiple solenoid valves, and the electric heating plate is fixedly installed at the lower outer end of the recycling box, and the semiconductor refrigeration device is fixedly installed at the outer end of the processing box; a connecting pipe is fixedly installed on the upper end of the recycling box, and the upper end of the connecting pipe is fixedly connected in parallel with one end of the first solenoid valve and the second solenoid valve, respectively, and the processing box A connecting pipe A is fixedly installed on the upper end, the other ends of the first solenoid valve and the second solenoid valve are fixedly connected to one end of the recovery pipe and one end of the connecting pipe A respectively, a discharge pipe is fixedly installed on one end of the lower side of the processing box, an output pipe is fixedly installed on one end of the lower side of the recovery box, and one side end of the output pipe is fixedly connected to one end of the third solenoid valve; the cleaning liquid tank mechanism includes a box body A, a solenoid valve A, a peristaltic pump, and a one-way air valve, and the upper end and the lower part of one side of the box body A are respectively fixedly installed with branch pipes, the upper side of the upper branch pipe is fixedly connected to the lower side of the discharge pipe, and the liquid inlet end of the peristaltic pump is fixedly connected to one side of the lower branch pipe; the one-way air valve is installed on the upper end of the box body A; the liquid outlet end of the peristaltic pump is fixedly connected to one end of the first solenoid valve A, the other end of the first solenoid valve A is fixedly connected in parallel with the nozzle inlet pipe of the inkjet printer body and one end of the second solenoid valve A, and the other end of the second solenoid valve A is fixedly connected to the liquid output end of the ink cartridge electric pump of the inkjet printer body.

2. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: The cleaning liquid tank mechanism, the recycling and processing mechanism, and the ink collecting mechanism are installed in a shell matched with the inkjet printer body, and the height of the box body is higher than the height of the box body A.

3. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: Solenoid valve, solenoid valve A is a normally closed valve core solenoid valve.

4. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: The lower end of the discharge hole and the lower end of the nozzle are in the same plane.

5. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: The electric heating plate is a finished product of a constant temperature PTC electric heating plate.

6. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: A sealing rubber pad is installed between the recovery tank and the nozzle.

7. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: A liquid adding pipe is installed outside the upper end of the box body, and a sealing cover is installed on the liquid adding pipe.

8. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: Cleaning liquid is added into box A.

9. The inkjet print head anti-leakage device integrated into an industrial robot system according to claim 1, characterized in that: One-way air valves are installed on the upper ends of the recovery box and the processing box.

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