Split type inkjet tool

Abstract

The split type inkjet tool comprises a front-section handle body assembly and a rear-section handle body assembly, the front-section handle body assembly comprises a front-section handle body, a spray head, a spray nozzle and a spray needle, the front-section handle body is provided with a front elastic component matched with the spray needle, and the front elastic component enables the spray needle to have the movement trend of opening the spray nozzle all the time; the rear-section handle body assembly comprises a rear-section handle body, an air inlet valve, a trigger and a needle rod, the front-section handle body is detachably and fixedly connected with the rear-section handle body, the front end of the needle rod abuts against the rear end of the spray needle in a matched mode, and the rear-section handle body is provided with a rear elastic component matched with the needle rod; the rear elastic component enables the spray needle to have the movement trend of overcoming the elastic force of the front elastic component to close the nozzle all the time through the needle rod. By the adoption of the split type structural design, when paint of different colors needs to be replaced for spraying, the paint spraying device can be used without cleaning, operation is convenient, and the spraying efficiency and the spraying quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of inkjet tools, and in particular to a split inkjet tool. Background Art

[0002] An airbrush is an important painting tool that can spray paint in a mist form to achieve uniform coloring. Its structure usually includes a pen body, a receiving chamber is formed inside the pen body, a spray needle is arranged in the receiving chamber, a receiving cup connected to the pen body and the receiving cup is used to hold the paint, a nozzle matching the spray needle is installed at the front end of the pen body through a nozzle, an air inlet valve connected to an air source is arranged in the middle of the pen body, an air outlet of the air inlet valve is connected to the front end of the nozzle, a trigger for controlling the opening and closing of the air inlet valve is arranged in the receiving chamber, and the spray needle cooperates with the trigger. When in use, the paint is placed in the receiving cup, the trigger is pressed first to open the air inlet valve, and compressed air is sprayed from the front end of the nozzle. At the same time, the spray needle is controlled to move backward, so that the paint in the receiving chamber flows out through the gap between the nozzle and the spray needle, and the compressed air discharged near the nozzle quickly atomizes the flowing liquid paint, thereby achieving the effect of atomized spraying.

[0003] Inkjet printing often requires the use of a variety of different colors of paint, that is, during the inkjet printing process, users will use different colors of paint to perform inkjet printing operations. However, the common airbrushes on the market need to be cleaned when changing the spray color, which makes the operation more cumbersome and inconvenient, time-consuming and labor-intensive, and affects the efficiency of inkjet printing. In addition, if the cleaning is not thorough, it will cause color pollution to the subsequent paint, thereby affecting the quality of inkjet printing. Summary of the invention

[0004] The purpose of the present invention is to provide a split-type spray painting tool in view of the defects and shortcomings of the prior art. By adopting a split structural design, when it is necessary to replace different colors of paint for spraying, it can be used without cleaning, is easy to operate, and is conducive to improving the spraying efficiency and spraying quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A split-type inkjet printing tool comprises a front handle assembly and a rear handle assembly adapted to each other;

[0007] The front handle assembly comprises a front handle, a spray head, a nozzle and a spray needle, wherein the spray head and the nozzle are cooperatively arranged at the front end of the front handle, and an air passage corresponding to the spray head and a liquid passage corresponding to the nozzle are respectively arranged in the front handle, and the spray needle is movably arranged in the liquid passage, and the front handle is provided with a front elastic member cooperating with the spray needle, and the front elastic member enables the spray needle to always have a movement tendency to open the nozzle, and the front handle is also provided with a cup seat for mounting a receiving cup, and the cup seat is communicated with the liquid passage;

[0008] The rear section handle body assembly includes a rear section handle body, an intake valve, a trigger and a needle rod. The front section handle body is detachably fixedly connected to the rear section handle body. The intake valve is connected to the rear section handle body. The air outlet of the intake valve is communicated with the air channel. The trigger is arranged in the rear section handle body to control the opening and closing of the intake valve. The needle rod is movably arranged in the rear section handle body and cooperates with the trigger. The front end of the needle rod is abutted against the rear end of the spray needle. The rear section handle body is provided with a rear elastic component cooperating with the needle rod. The rear elastic component enables the spray needle to always have a movement tendency to overcome the elastic force of the front elastic component and close the nozzle through the needle rod.

[0009] Furthermore, a sealing component is provided in the front section handle body for preventing the slurry from flowing to the rear section handle body assembly.

[0010] Furthermore, the sealing component is a sealing ring disposed in the liquid channel, and the sealing ring is sleeved between the front section handle and the spray needle.

[0011] Furthermore, a spray needle seat that cooperates with the needle rod is provided at the rear end of the spray needle, and the front elastic component is a spray needle spring that is arranged between the front section handle and the spray needle seat. The spray needle spring enables the spray needle to always have a tendency to move backward through the spray needle seat.

[0012] Furthermore, the rear end of the front section handle body is provided with a connecting portion extending into the rear section handle body, the rear end of the connecting portion is provided with an "L"-shaped connecting groove, and the rear section handle body is provided with a pin corresponding to the connecting groove, and the pin cooperates with the connecting groove to form a detachable fixed connection between the front section handle body and the rear section handle body.

[0013] Furthermore, a locking ring is arranged in the rear section of the handle body, the locking ring is engaged with the rear section of the handle body to prevent rotation, and the pin is arranged on the inner wall of the locking ring.

[0014] Furthermore, a limiting step and a positioning ring are respectively provided in the rear section of the handle body, the limiting step is located at the front end of the locking ring, the positioning ring is located at the rear end of the locking ring, the positioning ring is fixedly connected to the rear section of the handle body, the locking ring is axially limited between the limiting step and the positioning ring, and the locking ring is anti-rotationally engaged with the positioning ring.

[0015] Furthermore, an elastic ring is disposed between the locking ring and the limiting step, and the locking ring is elastically limited in the axial direction between the limiting step and the positioning ring by the elastic ring.

[0016] Furthermore, the rear end of the front section handle body is provided with a connecting portion extending into the rear section handle body, the outer wall of the connecting portion is provided with an annular protrusion, and the rear section handle body is provided with a retaining spring corresponding to the annular protrusion, and the retaining spring cooperates with the annular protrusion to form a detachable fixed connection between the front section handle body and the rear section handle body.

[0017] Furthermore, an adjustment mechanism cooperating with the needle bar is provided in the rear section of the handle body, and the adjustment mechanism includes an adjusting rod, a locking nut and an adjusting screw. The adjusting rod is sleeved on the outside of the needle bar, and the locking nut is threadedly connected to the tail of the adjusting rod. The locking nut is used to enable the adjusting rod to clamp the needle bar, and the adjusting screw is sleeved on the outside of the adjusting rod. The adjusting screw is threadedly connected to the rear section of the handle body, and the rear elastic member is a needle bar spring disposed between the adjusting rod and the adjusting screw. The needle bar spring enables the needle bar to always have a tendency to move forward through the adjusting rod.

[0018] The beneficial effects of the present invention are as follows: compared with the prior art, the split-type spray painting tool provided by the present invention integrates the spray head, nozzle, spray needle and material cup holder into the front-stage handle body by adopting the split-type matching front-stage handle body component and the rear-stage handle body component, and integrates the air intake valve, trigger and needle rod into the rear-stage handle body, and the front-stage handle body and the rear-stage handle body are detachably fixedly connected. During use, the user can configure multiple front-stage handle body components according to the color of the paint. When it is necessary to replace the paint of different colors, it is only necessary to remove the currently used front-stage handle body component from the rear-stage handle body component, and then replace the corresponding front-stage handle body component, so that the spray painting operation can be continued without cleaning, which is convenient to operate and is conducive to improving the spray painting efficiency and spray painting quality. In addition, the split-type spray painting tool provided by the present invention, because the needle rod that abuts against the spray needle is configured in the rear-stage handle body, under the cooperation of the trigger, the front elastic component and the rear elastic component, not only the opening and closing control of the nozzle can be realized, but also the liquid flow rate of the nozzle can be adjusted, thereby effectively meeting the actual spray painting needs of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the assembly structure of the front section handle body assembly and the rear section handle body assembly in the first embodiment of the present invention.

[0020] Figure 2 yes Figure 1 Enlarged structural diagram at A in the middle.

[0021] Figure 3 It is a schematic diagram of the separation structure of the front section handle body assembly and the rear section handle body assembly in the first embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the connection structure between the front section handle body and the rear section handle body in the first embodiment of this embodiment.

[0023] Figure 5 It is a schematic diagram of the assembly structure of the front section handle body assembly and the rear section handle body assembly in the second embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the separation structure of the front section handle body assembly and the rear section handle body assembly in the second embodiment of the present invention.

[0025] Figure 1-Figure 6 middle:

[0026] 1. Front handle assembly;

[0027] 10. Anterior stalk body;

[0028] 101, air channel; 102, liquid channel; 103, connecting portion; 104, connecting groove; 1041, first connecting section; 1042, second connecting section; 105, bushing; 106, annular convex portion; 1061, first inclined surface; 1062, second inclined surface;

[0029] 11. Nozzle;

[0030] 12. Nozzle;

[0031] 13. Spray needle; 131. Spray needle seat;

[0032] 14. Material cup holder;

[0033] 15. Sealing ring;

[0034] 16. Tighten the screws;

[0035] 17. Spray needle spring;

[0036] 2. Rear handle assembly;

[0037] 20, rear handle; 201, limit step; 202, retaining spring; 203, "O" ring;

[0038] 21. Inlet valve; 211. Air outlet;

[0039] 22. Trigger;

[0040] 23. Needle bar;

[0041] 24, locking ring; 241, pin; 242, groove;

[0042] 25. positioning ring; 251. projection;

[0043] 26. Elastic ring;

[0044] 271, adjusting rod; 272, locking nut; 273, adjusting screw;

[0045] 28. Needle bar spring;

[0046] 29. Extend the handle. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings.

[0048] Embodiment 1, as Figures 1 to 4 The split-type inkjet printing tool shown in the figure comprises a front handle body component 1 and a rear handle body component 2 which are separately arranged and adapted to each other, wherein:

[0049] The front handle assembly 1 includes a front handle 10, a spray head 11, a nozzle 12 and a spray needle 13. The spray head 11 and the nozzle 12 are arranged at the front end of the front handle 10. The front handle 10 is provided with an air channel 101 corresponding to the spray head 11 and a liquid channel 102 corresponding to the nozzle 12. The spray needle 13 is movably arranged in the liquid channel 102. The front handle 10 is provided with a front elastic member that cooperates with the spray needle 13. The front elastic member enables the spray needle 13 to always have a movement tendency to open the nozzle 12. The front handle 10 is also provided with a cup seat 14 for installing a receiving cup, and the cup seat 14 is connected to the liquid channel 102.

[0050] The rear section handle body assembly 2 includes a rear section handle body 20, an intake valve 21, a trigger 22 and a needle rod 23. The front section handle body 10 is detachably fixedly connected to the rear section handle body 20. The intake valve 21 is connected to the rear section handle body 20. The air outlet 211 of the intake valve 21 is communicated with the air channel 101. The trigger 22 is arranged in the rear section handle body 20 to control the opening and closing of the intake valve 21. The needle rod 23 is movably arranged in the rear section handle body 20 and cooperates with the trigger 22. The front end of the needle rod 23 is abutted against the rear end of the spray needle 13. The rear section handle body 20 is provided with a rear elastic component cooperating with the needle rod 23. The rear elastic component enables the spray needle 13 to always have a movement tendency to overcome the elastic force of the front elastic component and close the nozzle 12 through the needle rod 23.

[0051] Before using the split-type spray painting tool provided by the present invention, the front handle assembly 1 is mounted to the rear handle assembly 2, the receiving cup containing the paint is mounted to the material cup seat 14, and the air inlet of the air inlet valve 21 is connected to the air source. When the trigger 22 is not triggered, the needle rod 23 pushes forward against the spray needle 13 under the elastic force of the rear elastic member, so that the spray needle 13 overcomes the elastic force of the front elastic member and closes the nozzle 12. During the inkjet printing operation, the trigger 22 is first pressed to open the air inlet valve 21, so that the compressed air from the air source flows through the air inlet valve 21, the air channel 101 and the nozzle 11 and then is ejected from the front end of the nozzle 11. Then, the trigger 22 is pulled to push the needle rod 23 to overcome the elastic force of the rear elastic component and move backward. At this time, the thrust of the needle rod 23 on the spray needle 13 gradually decreases, and the spray needle 13 gradually moves backward under the elastic force of the front elastic component, so that the spray needle 13 opens the nozzle 12, and the liquid in the receiving cup flows through the liquid channel 102 to the gap between the nozzle 12 and the spray needle 13, and flows out from the nozzle 12. The outflowing liquid is quickly atomized by the compressed air ejected from the front end of the nozzle 11, thereby achieving the purpose of atomization spraying. During the inkjet printing process, the user can adjust the backward movement stroke of the needle rod 23 through the trigger 22, thereby adjusting the backward movement stroke of the spray needle 13, and then adjusting the gap between the spray needle 13 and the nozzle 12, so as to achieve the effect of adjusting the liquid flow rate of the nozzle 12 to meet the different inkjet printing needs of users.

[0052] It should be noted that the specific structure and working principle of the spray head 11, the nozzle 12, the air inlet valve 21 and the trigger 22 are conventional technical settings in this field and belong to the prior art, so they will not be elaborated here. For details, please refer to a reset locking spray pen disclosed in a Chinese invention patent (Announcement No. CN204996614U).

[0053] In order to prevent the liquid in the front handle body 10 from contaminating the rear handle body assembly 2, a sealing member is provided in the front handle body 10 to prevent the liquid from flowing to the rear handle body assembly 2. Specifically, see Figure 2 As shown, the sealing component is a sealing ring 15 arranged in the liquid channel 102, the sealing ring 15 is sleeved between the front section handle body 10 and the spray needle 13, the spray needle 13 and the sealing ring 15 are sealed and slidably matched, and a clamping screw 16 is arranged in the front section handle body 10, and the sealing ring 15 is axially limited between the front section handle body 10 and the clamping screw 16.

[0054] The rear end of the spray needle 13 is provided with a spray needle seat 131 that cooperates with the needle rod 23. The spray needle seat 131 is fixedly connected to the spray needle 13. The front elastic component is a spray needle spring 17 that is arranged between the front section of the handle body 10 and the spray needle seat 131. The spray needle spring 17 applies a backward elastic force to the spray needle seat 131, so that the spray needle 13 always has a tendency to move backward.

[0055] join Figure 3 and Figure 4 As shown, the rear end of the front section handle body 10 is provided with a connecting portion 103 extending into the rear section handle body 20, and the connecting portion 103 is sealed with the rear section handle body 20. The rear end of the connecting portion 103 is provided with an "L"-shaped connecting groove 104. The connecting groove 104 includes a first connecting segment 1041 extending axially along the connecting portion 103 and a second connecting segment 1042 extending circumferentially along the connecting portion 103. The front end of the first connecting segment 1041 is connected to the second connecting segment 1042, and the rear end of the first connecting segment 1041 passes through the end of the connecting portion 103. A pin 241 corresponding to the connecting groove 104 is provided in the rear section handle body 20. The pin 241 cooperates with the connecting groove 104 to form a detachable fixed connection between the front section handle body 10 and the rear section handle body 20. When the front section handle assembly 1 and the rear section handle assembly 2 need to be assembled, the rear end of the front section handle assembly 10 is aligned with the front end of the rear section handle assembly 20, the connecting portion 103 is inserted into the rear section handle assembly 20, and the pin 241 enters the first connecting section 1041, and then the front section handle assembly 10 is pushed backward until the pin 241 moves to the junction of the first connecting section 1041 and the second connecting section 1042, and then the front section handle assembly 10 is rotated to move the pin 241 into the second connecting section 1042, so that the front section handle assembly 1 and the rear section handle assembly 2 can be quickly connected and fixed. When the front section handle assembly 1 needs to be removed from the rear section handle assembly 2, the front section handle assembly 1 can be quickly removed by simply following the reverse operation sequence of the above steps.

[0056] In this embodiment, for the convenience of processing, a locking ring 24 is provided in the rear section handle body 20 , the locking ring 24 cooperates with the rear section handle body 20 to prevent rotation, and a pin 241 is provided on the inner wall of the locking ring 24 . Furthermore, in order to facilitate the installation and limiting of the locking ring 24, a limiting step 201 and a positioning ring 25 are respectively provided in the rear section handle body 20, the limiting step 201 is located at the front end of the locking ring 24, the positioning ring 25 is located at the rear end of the locking ring 24, the positioning ring 25 is fixedly connected to the rear section handle body 20, the locking ring 24 is axially limited between the limiting step 201 and the positioning ring 25, the rear end face of the locking ring 24 is provided with a groove 242, the front end face of the positioning ring 25 is provided with a protrusion 251 corresponding to the groove 242, the protrusion 251 is inserted into the groove 242, so that the locking ring 24 and the positioning ring 25 are prevented from rotating, so as to ensure that when the front section handle body assembly 1 is installed or disassembled, the locking ring 24 will not rotate relative to the rear section handle body 20, thereby improving the stability and reliability of the connection between the front section handle body 10 and the rear section handle body 20.

[0057] An elastic ring 26 is disposed between the locking ring 24 and the limiting step 201, and the locking ring 24 is elastically limited in the axial direction between the limiting step 201 and the positioning ring 25 by the elastic ring 26. By providing the elastic ring 26, the locking ring 24 can have a certain floating effect in the axial direction of the rear section handle body 20. When the pin 241 moves from the first connection section 1041 of the connecting groove 104 to the second connection section 1042, under the mutual tension between the pin 241 and the connecting portion 103, the elastic ring 26 can produce a slight deformation under the action of the tension, thereby balancing the relative shaking caused by the machining error between the pin 241 and the connecting groove 104, making the connection between the pin 241 and the connecting groove 104 more stable, and further improving the stability of the connection between the front section handle body 10 and the rear section handle body 20.

[0058] See also Figure 1 and Figure 3 As shown, an adjustment mechanism cooperating with the needle rod 23 is provided in the rear section of the handle body 20, and the adjustment mechanism includes an adjustment rod 271, a locking nut 272 and an adjusting screw 273. The adjustment rod 271 is sleeved on the outside of the needle rod 23, and the tail of the adjustment rod 271 is provided with a shrinkage gap extending along the axial direction. The locking nut 272 is threadedly connected to the tail of the adjustment rod 271. When the locking nut 272 is threadedly tightened to the adjustment rod 271, the locking nut 272 applies a radial force to the adjustment rod 271, and the radial force causes the shrinkage gap of the adjustment rod 271 to shrink, thereby allowing the adjustment rod 271 to clamp the needle rod 23. The adjusting screw 273 is sleeved on the outside of the adjusting rod 271, and the adjusting screw 273 is threadedly connected to the rear section handle body 20. The rear elastic member is a needle bar spring 28 disposed between the adjusting rod 271 and the adjusting screw 273. The needle bar spring 28 allows the needle bar 23 to always have a movement tendency to move forward through the adjusting rod 271. When the user pulls the trigger 22, the trigger 22 drives the needle bar 23 to overcome the elastic force of the needle bar spring 28 and move backward. When in use, the user can adjust the pre-compression amount of the needle bar spring 28 by screwing the adjusting screw 273, thereby achieving the purpose of adjusting the elastic force of the needle bar spring 28. In this embodiment, in order to facilitate the user to hold, the tail of the rear section handle body 20 is also provided with an extended handle body 29 (i.e., tail handle).

[0059] See also Figure 2 As shown, a bushing 105 is provided at the rear end of the front handle body 10, and the bushing 105 extends into the rear handle body 20, and the outer wall of the bushing 105 is in contact with the front inner wall of the rear handle body 20. By providing the bushing 105, when the front handle body 10 is connected to the rear handle body 20, the bushing 105 is in contact with the front inner wall of the rear handle body 20, thereby preventing the front handle body 10 from shaking relative to the rear handle body 20, and further improving the stability and reliability of the connection between the front handle body assembly 1 and the rear handle body assembly 2.

[0060] Embodiment 2: The main structure and working principle of this embodiment are basically the same as those of the above-mentioned embodiment 1, except that the connection method between the front section handle body 10 and the rear section handle body 20 is different. In this embodiment, see Figure 5 and Figure 6 As shown, the rear end of the front section handle body 10 is provided with a connecting portion 103 extending into the rear section handle body 20, the connecting portion 103 is sealed with the rear section handle body 20, the outer wall of the connecting portion 103 is provided with an annular protrusion 106, and the rear section handle body 20 is provided with a retaining spring 202 corresponding to the annular protrusion 106, and the retaining spring 202 cooperates with the annular protrusion 106, so that the front section handle body 10 and the rear section handle body 20 are detachably fixedly connected. Specifically, the rear end of the annular protrusion 106 is provided with a first inclined surface 1061, and the front end of the annular protrusion 106 is provided with a second inclined surface 1062, wherein the first inclined surface 1061 is a guiding inclined surface, and the second inclined surface 1062 is a locking inclined surface, and the inclination of the first inclined surface 1061 is smaller than the inclination of the second inclined surface 1062. When the connection part 103 is inserted into the rear section handle body 20, the annular protrusion 106 first opens the clip spring 202 through the first inclined surface 1061. When the clip spring 202 passes over the first inclined surface 1061 and enters the second inclined surface 1062, the clip spring 202 is reset and contracted under the action of its own elastic force, so that the clip spring 202 cooperates with the second inclined surface 1062 to lock the connection part 103, thereby preventing the front section handle body 10 from falling off. When it is necessary to remove the front section handle body assembly 1 from the rear section handle body assembly 2, the front section handle body 10 is pulled forward to move the connection part 103 forward relative to the rear section handle body 20. At this time, the second inclined surface 1062 first opens the clip spring to release the clip spring 202 from locking the connection part.

[0061] In the present embodiment, an "O" ring 203 is further provided in the rear section handle body 20 and is sleeved on the outside of the connecting portion 103. By providing the "O" ring 203, on the one hand, the connecting portion 103 and the rear section handle body 20 can form a sealing fit, and on the other hand, the connecting portion 103 can be positioned, so that the coaxiality between the connecting portion 103 and the rear section handle body 20 is higher during installation, avoiding relative shaking between the two, which is beneficial to improving the stability and reliability of the connection between the front section handle body assembly 1 and the rear section handle body assembly 2.

[0062] In summary, the split-type spray painting tool provided by the present invention adopts a split-matching front-section handle body assembly 1 and a rear-section handle body assembly 2, and the spray head 11, the nozzle 12, the spray needle 13 and the material cup holder 14 are integrated and installed on the front-section handle body 10, and the air intake valve 21, the trigger 22 and the needle rod 23 are integrated and installed on the rear-section handle body 20, and the front-section handle body 10 and the rear-section handle body 20 are detachably fixedly connected. During use, the user can configure multiple front-section handle body assemblies 1 according to the color of the paint. When it is necessary to replace the paint of a different color, it is only necessary to remove the currently used front-section handle body assembly 1 from the rear-section handle body assembly 2, and then replace the corresponding front-section handle body assembly 1, so that the spray painting operation can be continued without cleaning. The operation is convenient and is conducive to improving the spray painting efficiency and the spray painting quality. In addition, the split-type inkjet printing tool provided by the present invention has a needle rod 23 that cooperates with the inkjet needle 13 configured in the rear section of the handle body 20. Under the cooperation of the trigger 22, the front elastic component and the rear elastic component, it can not only realize the opening and closing control of the nozzle 12, but also adjust the liquid output flow rate of the nozzle 12, thereby effectively meeting the user's actual inkjet printing needs.

[0063] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A split type inkjet printing tool, characterized in that: It includes a front section handle body component and a rear section handle body component adapted to each other; The front handle assembly comprises a front handle, a spray head, a nozzle and a spray needle, wherein the spray head and the nozzle are cooperatively arranged at the front end of the front handle, and an air passage corresponding to the spray head and a liquid passage corresponding to the nozzle are respectively arranged in the front handle, and the spray needle is movably arranged in the liquid passage, and the front handle is provided with a front elastic member cooperating with the spray needle, and the front elastic member enables the spray needle to always have a movement tendency to open the nozzle, and the front handle is also provided with a cup seat for mounting a receiving cup, and the cup seat is communicated with the liquid passage; The rear section handle body assembly includes a rear section handle body, an intake valve, a trigger and a needle rod. The front section handle body is detachably fixedly connected to the rear section handle body. The intake valve is connected to the rear section handle body. The air outlet of the intake valve is communicated with the air channel. The trigger is arranged in the rear section handle body to control the opening and closing of the intake valve. The needle rod is movably arranged in the rear section handle body and cooperates with the trigger. The front end of the needle rod is abutted against the rear end of the spray needle. The rear section handle body is provided with a rear elastic component cooperating with the needle rod. The rear elastic component enables the spray needle to always have a movement tendency to overcome the elastic force of the front elastic component and close the nozzle through the needle rod.

2. A split type inkjet printing tool according to claim 1, characterized in that: The front section handle body is provided with a sealing component for preventing the liquid from flowing to the rear section handle body assembly.

3. A split type inkjet printing tool according to claim 2, characterized in that: The sealing component is a sealing ring arranged in the liquid channel, and the sealing ring is sleeved between the front handle body and the spray needle.

4. The split-type inkjet printing tool according to claim 1, characterized in that: The rear end of the spray needle is provided with a spray needle seat that cooperates with the needle rod. The front elastic component is a spray needle spring that is arranged between the front handle body and the spray needle seat. The spray needle spring enables the spray needle to always have a movement tendency to move backward through the spray needle seat.

5. The split-type inkjet printing tool according to claim 1, characterized in that: The rear end of the front section handle body is provided with a connecting portion extending into the rear section handle body, and the rear end of the connecting portion is provided with an "L"-shaped connecting groove, and the rear section handle body is provided with a pin corresponding to the connecting groove. The pin cooperates with the connecting groove, so that the front section handle body and the rear section handle body are detachably fixedly connected.

6. A split type inkjet printing tool according to claim 5, characterized in that: A locking ring is arranged in the rear section handle body, the locking ring is engaged with the rear section handle body to prevent rotation, and the pin is arranged on the inner wall of the locking ring.

7. A split type inkjet printing tool according to claim 6, characterized in that: A limiting step and a positioning ring are respectively provided in the rear section of the handle body, the limiting step is located at the front end of the locking ring, the positioning ring is located at the rear end of the locking ring, the positioning ring is fixedly connected to the rear section of the handle body, the locking ring is axially limited between the limiting step and the positioning ring, and the locking ring is anti-rotationally engaged with the positioning ring.

8. The split-type inkjet printing tool according to claim 7, characterized in that: An elastic ring is disposed between the locking ring and the limiting step, and the locking ring is elastically limited in the axial direction between the limiting step and the positioning ring by the elastic ring.

9. The split-type inkjet printing tool according to claim 1, characterized in that: The rear end of the front section handle body is provided with a connecting portion extending into the rear section handle body, the outer wall of the connecting portion is provided with an annular protrusion, and the rear section handle body is provided with a retaining spring corresponding to the annular protrusion. The retaining spring cooperates with the annular protrusion to form a detachable fixed connection between the front section handle body and the rear section handle body.

10. The split-type inkjet printing tool according to claim 1, characterized in that: The rear section of the handle body is provided with an adjustment mechanism cooperating with the needle bar, the adjustment mechanism includes an adjustment rod, a locking nut and an adjusting screw, the adjustment rod is sleeved on the outside of the needle bar, the locking nut is threadedly connected to the tail of the adjusting rod, the locking nut is used to enable the adjusting rod to clamp the needle bar, the adjusting screw is sleeved on the outside of the adjusting rod, the adjusting screw is threadedly connected to the rear section of the handle body, the rear elastic member is a needle bar spring disposed between the adjusting rod and the adjusting screw, and the needle bar spring enables the needle bar to always have a tendency to move forward through the adjusting rod.

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