Art spray gun

Abstract

The utility model discloses an art spray gun, which relates to the technical field of spray guns, and comprises a gun body, a nozzle is arranged on the gun body, the nozzle is provided with a nozzle hole, and an ejector pin guide seat is arranged in the gun body; the front side of the ejector pin is provided with an ejector pin conical tip, the outer side wall of the ejector pin is sleeved with an ejector pin guide sleeve, the rear side of the ejector pin guide sleeve is provided with a locking sleeve, the ejector pin guide sleeve is fixedly connected with the ejector pin through the locking sleeve, and the rear end of the locking sleeve is provided with a first adjusting top face; a second adjusting top surface is arranged at the front end of the adjusting knob; by rotating the adjusting knob, the adjusting knob is controlled to finely adjust the position along the thread, and the guide hole in the ejector pin guide seat guides the ejector pin guide sleeve, so that the position of the second adjusting top surface propping against the first adjusting top surface can be adjusted, and the retreating amplitude of the ejector pin is adjusted to accurately control the area of the airflow pressurizing hole; and the width of the line formed by spraying the coating is accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of spray gun technology, and in particular to an art spray gun. Background Technology

[0002] Art airbrushes produce effects significantly different from traditional paintbrushes when used for artistic painting, thus possessing unique artistic value. During operation, different line widths can be created by manipulating the degree of nozzle backspin, along with the distance and angle of the nozzle from the canvas. However, in practical use, the difficulty in precisely controlling the nozzle backspin makes it necessary to rely on the user's feel while holding the airbrush. This requires manually adjusting the distance and angle of the nozzle to ensure the desired effect, which is inconvenient and leads to inconsistent results. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an art airbrush.

[0004] An art spray gun according to an embodiment of the present utility model includes: a gun body, on which a nozzle is provided, the nozzle having a nozzle hole, and a ejector pin guide seat provided inside the gun body; an ejector pin, the ejector pin having a cone-shaped tip on its front side, a paint pressure hole formed between the outer wall of the cone-shaped tip and the wall of the nozzle hole, an ejector pin guide sleeve fitted on the outer wall of the ejector pin, a locking sleeve provided on the rear side of the ejector pin guide sleeve, the ejector pin guide sleeve being fixedly connected to the ejector pin through the locking sleeve, the rear end of the locking sleeve having a first adjusting top surface, and the ejector pin guide seat being able to guide the ejector pin guide seat to move; and an adjusting knob, the adjusting knob being threadedly connected to the rear side of the gun body, the front end of the adjusting knob having a second adjusting top surface, the second adjusting top surface abutting against the first adjusting top surface.

[0005] According to some embodiments of the present invention, the ejector pin guide seat has a rear sealing edge on the rear side, the outer wall of the ejector pin guide sleeve is provided with a guide boss, the guide side wall is located on the outer wall of the guide boss, the rear end of the guide boss has a rear support surface, and an ejector pin spring is fitted on the outer wall of the ejector pin guide sleeve. The front and rear ends of the ejector pin spring respectively abut against the rear support surface of the guide boss and the rear sealing edge of the guide seat.

[0006] According to some embodiments of the present invention, a locking block is provided on the rear side of the ejector guide sleeve, and each locking block is separated by a locking groove. The outer side of the locking block has a locking block thread, and a locking sleeve threaded hole is provided on the front side of the locking sleeve. The locking block thread and the locking sleeve threaded hole are threadedly connected.

[0007] According to some embodiments of the present invention, the first adjusting top surface and the second adjusting top surface are corresponding conical surfaces, the radius of the front end of the first adjusting top surface is greater than the radius of the rear end of the first adjusting top surface, and the radius of the front end of the second adjusting top surface is greater than the radius of the rear end of the second adjusting top surface.

[0008] According to some embodiments of this utility model, a nozzle assembly is provided on the front side of the gun body, and a flow-dividing cavity is provided on the lower side of the gun body. An air flow channel is opened between the front side of the flow-dividing cavity and the rear side of the nozzle assembly. An air diverter is provided in the flow-dividing cavity. The air diverter has a connector diverter cavity. The front side of the connector diverter cavity serves as an output end and communicates with the rear end of the air flow channel. The lower opening of the connector diverter cavity serves as an input end. An air valve rod is inserted into the connector diverter cavity. The upper end of the air valve rod extends out of the air diverter. A pressing trigger is connected to the upper end of the air valve rod. A valve part is provided on the outer wall of the air valve rod. A valve sealing ring is provided on the valve part. The valve part and the valve sealing ring can block the input end of the connector diverter cavity.

[0009] According to some embodiments of this utility model, an air source connector is provided on the lower side of the connector diversion cavity. The air source connector has an inner cavity. An upper positioning plate is provided on the upper side of the inner cavity of the air source connector. The upper positioning plate has an upper positioning hole. A lower positioning plate is provided on the lower side of the inner cavity of the air source connector. The lower positioning plate has a lower positioning hole. The air valve stem includes an upper valve stem on the upper side and a lower valve stem on the lower side. The upper valve stem is inserted into the upper positioning hole, and the lower valve stem is inserted into the lower positioning hole.

[0010] According to some embodiments of this utility model, a detachable long handle is provided on the lower side of the gun body. The long handle has a long handle cavity, and the upper side of the long handle cavity communicates with the inner cavity of the air source connector.

[0011] According to some embodiments of this utility model, it further includes a nozzle assembly, which includes a rear spray cap connector, a front spray cap, and the nozzle; the spray cap connector has a central first paint channel hole and an airflow channel hole, and each of the airflow channel holes surrounds the outer side of the first paint channel hole; the spray cap has a spray cap hole at the middle position; the nozzle covers the front end of the first paint channel hole, and a paint spray nozzle is provided on the front side of the nozzle. The paint spray nozzle extends forward through the spray cap hole, and the gap between the outer wall of the paint spray nozzle and the inner wall of the spray cap hole serves as an airflow pressurization hole. Airflow can pass through the airflow channel hole and be sprayed out from the airflow pressurization hole, and paint can pass through the first paint channel hole and be sprayed out from the paint pressurization hole.

[0012] According to some embodiments of the present invention, the spray cap connector includes a middle column portion and an outer ring portion, the middle column portion having a first paint channel hole, and the outer ring portion having an airflow channel hole.

[0013] According to some embodiments of the present invention, the upper side of the gun body has a paint cup interface, a paint cup is provided on the paint cup interface, and the paint cup and the paint cup interface are connected by a thread.

[0014] The art airbrush according to the embodiments of this utility model has at least the following technical effects:

[0015] By rotating the adjustment knob, the position is finely adjusted along the thread, and the guide hole in the ejector pin guide seat guides the ejector pin guide sleeve. This allows adjustment of the position when the second adjustment top surface abuts against the first adjustment top surface, and adjustment of the ejector pin retraction range to precisely control the area of ​​the airflow pressurization hole, thereby achieving precise control of the line width formed by the paint spray. A long handle can be added as a handle structure as needed, and the long handle can also be connected to an external air source. The nozzle assembly is connected to the gun body through the spray cap connector, and the nozzle assembly can be flexibly replaced according to work needs to achieve different spraying effects. Additional aspects and advantages of this utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this utility model. Attached Figure Description

[0016] Additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a three-dimensional view of the utility model art spray gun;

[0018] Figure 2 This is an exploded view of the structure of this utility model art spray gun;

[0019] Figure 3 This is a structural schematic diagram of the art spray gun of this utility model;

[0020] Figure 4 This is a schematic diagram illustrating the working principle of this utility model art spray gun;

[0021] Figure 5 This is a cross-sectional view of the art spray gun of this utility model;

[0022] Figure 6 yes Figure 5 A magnified view of a portion of region A in the middle;

[0023] Figure 7 yes Figure 5 A magnified view of a portion of region B in the middle;

[0024] Figure 8 yes Figure 5 A magnified view of a portion of region C in the middle;

[0025] Figure 9 This is a cross-sectional view of the ejector pin guide sleeve in this utility model;

[0026] Figure 10 This is a cross-sectional view of the ejector pin guide in this utility model;

[0027] Figure 11 This is a cross-sectional view of the air splitter in this utility model;

[0028] Figure 12 This is a perspective view of the air valve stem in this utility model;

[0029] Figure 13 This is a cross-sectional view of the gas source connector in this utility model;

[0030] Figure 14 This is a cross-sectional view of the gun body in this utility model;

[0031] Figure 15 This is an exploded view of the nozzle assembly in this utility model;

[0032] Figure 16 This is a schematic diagram of another embodiment of the long handle of this utility model;

[0033] Figure 17 This is an exploded view of the structure of the medium-length handle of this utility model.

[0034] Figure label:

[0035] Gun body 100, flow divider cavity 110, air flow channel 120, paint cup interface 130, paint cup interface flow channel 131, knob connector 140, connector window 141, paint main channel 150, ejector pin assembly insertion hole 160, airflow buffer chamber 170, ejector pin clamping seal 180, paint cup 190, paint cup connection port 191, paint cup end cap 192; ejector pin 200, ejector pin conical tip 201, ejector pin guide sleeve 210, guide boss 211, guide sidewall 212, guide boss rear support surface 213, locking block 214, locking groove 215, locking block thread 216, guide sleeve boss 217, locking 218 spring, 220 locking sleeve, 221 threaded hole of locking sleeve, 222 first adjusting top surface, 230 ejector spring; 300 ejector guide seat, 310 guide hole, 320 rear sealing edge of guide seat, 330 connecting boss of guide seat; 400 adjusting knob, 410 adjusting front ring, 411 second adjusting top surface; 500 air splitter, 510 connector splitter cavity, 511 connector splitter cavity inlet, 512 connector splitter cavity outlet, 520 upper sealing plate of splitter cavity; 600 air valve stem, 610 pressing trigger, 611 trigger locking groove, 612 trigger connecting rod, 613 trigger connecting rod sealing ring, 620 valve part, 621 valve sealing ring, upper Valve stem 630, lower valve stem 640, valve stem return spring 650; air source connector 700, connector upper positioning plate 710, upper positioning hole 711, upper through hole 712, upper diversion hole 713, connector lower positioning plate 720, lower positioning hole 721, lower positioning vent hole 722, connector plug end 730, connector plug end sealing ring 731; nozzle assembly 800, spray cap connector 810, intermediate column part 811, first paint channel hole 812, outer ring part 813, airflow channel hole 814, outer ring part threaded part 815, outer ring part tapered part 816, intermediate column part tapered part 817, spray cap 820, spray cap cavity 821 822, spray cap hole, 823, spray cap threaded part, 824, spray cap cavity conical part, 825, spray angle, 826, spray hole, 827, nozzle, 830, second paint channel hole, 831, paint spray nozzle, 832, paint pressure hole, 833, nozzle insertion part, 834, nozzle conical part, 835, nozzle hole, 836, protective cover, 840, protective cover retaining ring, 841, spray cap connecting ring, 850; long handle, 900, long handle cavity, 910, upper handle connection port, 911, lower handle connection port, 912, air conditioning quick connector, 920, quick connector nut, 921, quick connector sealing gasket, 922, handle locking screw, 930. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Regarding the description of orientation,

[0037] The following is for reference. Figure 1 and Figure 2 This invention describes an art spray gun according to an embodiment of the present invention.

[0038] like Figure 1 and Figure 2 As shown, the art spray gun according to an embodiment of the present utility model includes a gun body 100, a ejector pin 200, an ejector pin guide sleeve 210, a locking sleeve 220, an ejector pin guide seat 300, and an adjustment knob 400.

[0039] Reference Figure 3 , Figure 5 The gun body 100 is provided with a nozzle 830, which has a nozzle hole 836. The gun body 100 is provided with a ejector pin guide seat 300. The ejector pin 200 has a ejector pin conical tip 201 on its front side. The outer wall of the ejector pin conical tip 201 forms a paint pressure hole 833 between the outer wall of the ejector pin conical tip 201 and the hole wall of the nozzle hole 836. An ejector pin guide sleeve 210 is fitted on the outer wall of the ejector pin 200. A locking sleeve 220 is provided on the rear side of the ejector pin guide sleeve 210. The ejector pin guide sleeve 210 is fixedly connected to the ejector pin 200 through the locking sleeve 220. The rear end of the locking sleeve 220 has a first adjustment top surface 222. The ejector pin guide seat 300 can guide the ejector pin guide seat 300 to move. An adjustment knob 400 is connected to the rear side of the gun body 100 by a thread. The front end of the adjustment knob 400 has a second adjustment top surface 411, which abuts against the first adjustment top surface 222.

[0040] For example, such as Figure 1 and Figure 2 As shown, the gun body 100 has a cavity, and a nozzle 830 is provided on the gun body 100. The nozzle 830 has a nozzle hole 836. The gun body 100 is relatively fixed during operation. The ejector pin 200 extends in the front-to-back direction and can move back and forth within the gun body 100. (Refer to...) Figure 3 , Figure 5The ejector pin 200 has a conical tip 201 on its front side, and a paint pressure hole 833 is formed between the outer wall of the conical tip 201 and the wall of the nozzle hole 836. The conical tip 201 is conical in shape, and the radius of its front position is smaller than the radius of its rear position. The ejector pin guide seat 300 is located inside the gun body 100 and has a guide hole 310. The ejector pin guide seat 300 is also relatively fixed inside the gun body 100. The ejector pin guide sleeve 210 is fitted onto the outer wall of the ejector pin 200, and the outer wall of the ejector pin guide sleeve 210 has a guide sidewall 212, which abuts against the wall of the guide hole 310. The ejector pin guide sleeve 210 is connected to the ejector pin 200, and the ejector pin guide sleeve 210, locking sleeve 220, and ejector pin 200 can move back and forth under the guidance of the guide hole 310 in the ejector pin guide seat 300. The locking sleeve 220 is connected to the rear side of the ejector pin guide sleeve 210, and the ejector pin guide sleeve 210 is fixedly connected to the ejector pin 200 through the locking sleeve 220. The rear end of the locking sleeve 220 has a first adjusting top surface 222. The adjusting knob 400 is threaded to the rear side of the gun body 100, which not only achieves the fixed installation of the adjusting knob 400, but also allows the adjusting knob 400 to be finely adjusted along the thread. The front end of the adjusting knob 400 has a second adjusting top surface 411, which abuts against the first adjusting top surface 222. In this way, the position of the second adjusting top surface 411 abutting against the first adjusting top surface 222 inside the gun body 100 can be adjusted by finely adjusting the position of the adjusting knob 400 along the thread.

[0041] This utility model of an art airbrush controls its on / off state by manipulating the ejector pin 200 to move backward. Specifically, when the ejector pin 200 moves forward to the first position, the art airbrush is in the off state. When the ejector pin 200 moves backward to the second position, the art airbrush is in the on state.

[0042] Reference Figure 4 Since the conical tip 201 of the ejector pin is conical, adjusting the second position of the ejector pin 200 is equivalent to adjusting the position of the conical tip 201 relative to the nozzle orifice 836. This changes the area of ​​the airflow pressurization orifice 823 formed between the outer wall of the conical tip 201 and the wall of the nozzle orifice 836. The further back the second position of the ejector pin 200 is, the larger the area of ​​the airflow pressurization orifice 823, resulting in a wider sprayed line. Conversely, the further forward the second position of the ejector pin 200 is, the smaller the area of ​​the airflow pressurization orifice 823, resulting in a narrower sprayed line.

[0043] In actual operation, by rotating the adjusting knob 400, the position of the adjusting knob 400 is finely adjusted along the thread. This allows adjustment of the position of the second adjusting top surface 411 within the gun body 100, which is equivalent to adjusting the second position after the ejector pin 200 has moved backward. During the rotation of the adjusting knob 400, because the adjusting knob 400 presses against the locking sleeve 220, the locking sleeve 220 drives the ejector pin guide sleeve 210 and the ejector pin 200 to move within the guide hole 310. This ensures that the adjustment of the second position is sufficiently accurate.

[0044] In addition, the guide hole 310 in the ejector pin guide seat 300 guides the ejector pin guide sleeve 210 to move back and forth, which also ensures that the ejector pin 200 moves back and forth smoothly and accurately when the art spray gun of this utility model is switched on and off, and also helps to ensure that the lines formed by the paint spraying are accurate and stable enough.

[0045] In some embodiments of this utility model, reference is made to Figure 6 , Figure 10 The ejector pin guide seat 300 has a rear sealing edge 320 on its rear side, as shown in the reference. Figure 9 The outer wall of the ejector guide sleeve 210 is provided with a guide boss 211, and a guide side wall 212 is located on the outer wall of the guide boss 211. The rear end of the guide boss 211 has a guide boss rear support surface 213. An ejector spring 230 is fitted on the outer wall of the ejector guide sleeve 210. The front and rear ends of the ejector spring 230 respectively abut against the guide boss rear support surface 213 and the guide seat rear sealing edge 320, so that the ejector spring 230 can apply a forward thrust to the ejector guide sleeve 210. This is equivalent to providing a forward reset thrust for the ejector 200.

[0046] When the art spray gun of this utility model is in the normally closed state, the ejector spring 230 applies a forward restoring force to the ejector pin 200, so that the ejector pin conical tip 201 of the ejector pin 200 blocks the nozzle hole 836.

[0047] In some embodiments of this utility model, reference is made to Figure 6 , Figure 9 A locking block 214 is provided on the rear side of the ejector guide sleeve 210. Each locking block 214 is separated by a locking groove 215. The outer side of the locking block 214 has a locking block thread 216. The front side of the locking sleeve 220 has a locking sleeve threaded hole 221. The locking block thread 216 and the locking sleeve threaded hole 221 are threadedly connected. In this way, when the locking sleeve 220 is installed on the rear side of the ejector guide sleeve 210, the locking sleeve 220 can press the locking block 214.

[0048] The locking blocks 214 are separated from each other by specially designed locking grooves 215 to ensure that each locking block 214 can move independently. The locking block threads 216 on the outer side of the locking blocks 214 match the locking sleeve threaded holes 221 specially opened on the front side of the locking sleeve 220, allowing the two to achieve a tight engagement through threaded connection. When the locking sleeve 220 is installed and tightened on the rear side of the ejector guide sleeve 210, the structural design of the locking sleeve 220 allows it to apply pressure to the locking blocks 214 to lock the ejector pin 200 and prevent the ejector pin 200 from sliding in the locking sleeve 220, thereby ensuring the stability and reliability of the ejector pin assembly consisting of the ejector pin 200, the ejector pin guide sleeve 210, and the locking sleeve 220 during operation.

[0049] When the locking sleeve 220 and the ejector guide sleeve 210 are not yet connected, the locking block 214 is pushed outward, allowing the ejector pin 200 to be easily inserted into or removed from the ejector guide sleeve 210. When the locking sleeve 220 is tightened onto the ejector guide sleeve 210, the locking block 214 presses the ejector pin 200 under the pressure of the locking sleeve 220, thus securing the ejector pin 200.

[0050] In some embodiments of this utility model, a pin assembly insertion hole 160 is provided on the rear side of the gun body 100, and a guide seat connecting boss 330 is provided on the outer wall of the pin guide seat 300. The outer wall of the guide seat connecting boss 330 and the hole wall of the pin assembly insertion hole 160 in the gun body 100 are connected by threads, which facilitates the installation, disassembly and replacement of the pin guide seat 300.

[0051] In some embodiments of this utility model, reference is made to Figure 6 The first adjusting top surface 222 and the second adjusting top surface 411 are corresponding conical surfaces. The radius of the front end of the first adjusting top surface 222 is larger than the radius of the rear end of the first adjusting top surface 222, and the radius of the front end of the second adjusting top surface 411 is larger than the radius of the rear end of the second adjusting top surface 411. This design ensures that when the adjusting knob 400 presses against the locking sleeve 220, the locking sleeve 220 will not shift laterally, thus guaranteeing the accuracy of the adjustment and movement of the ejector pin 200.

[0052] In some embodiments of this utility model, an adjustment front ring 410 is provided on the front side of the adjustment knob 400, and a second adjustment top surface 411 is located at the front end of the adjustment front ring 410. The adjustment front ring 410 can be designed with a smaller diameter than the adjustment knob 400, and only needs to match the first adjustment top surface 222 of the locking sleeve 220, so that the structure is more compact.

[0053] In some embodiments of this utility model, reference is made to Figure 2 , Figure 3A nozzle assembly 800 is provided on the front side of the gun body 100, and a flow-dividing cavity 110 is provided on the lower side of the gun body 100. An air flow channel 120 is formed between the front side of the flow-dividing cavity 110 and the rear side of the nozzle assembly 800. (Refer to...) Figure 7 , Figure 11 An air diverter 500 is installed inside the diverting cavity 110. The air diverter 500 has a connector diverting cavity 510. The front of the connector diverting cavity 510 serves as the output end and is connected to the rear end of the air flow channel 120. The lower opening of the connector diverting cavity 510 serves as the input end. That is, the airflow can enter the connector diverting cavity 510 from the input end, and then enter the air flow channel 120 through the output end of the connector diverting cavity 510. After this airflow reaches the nozzle assembly 800, it can pressurize and disperse the paint sprayed from the nozzle orifice 836 to form an atomized effect.

[0054] Reference Figure 7 , Figure 12 An air valve stem 600 is inserted into the connector diversion cavity 510. The upper end of the air valve stem 600 extends out of the air diversion component 500. A pressing trigger 610 is connected to the upper end of the air valve stem 600. A valve part 620 is provided on the outer wall of the air valve stem 600, and a valve sealing ring 621 is provided on the valve part 620. The valve part 620 and the valve sealing ring 621 can block the input end of the connector diversion cavity 510. The air valve stem 600 can be moved by operating the pressing trigger 610, thereby controlling whether the valve part 620 and the valve sealing ring 621 of the air valve stem 600 block the input end of the connector diversion cavity 510. This is equivalent to controlling the air intake switch of the art spray gun of this utility model.

[0055] For example, refer to Figure 7 When the air valve stem 600 is in the raised state, the valve part 620, in conjunction with the valve sealing ring 621, can seal the input end of the connector diversion chamber 510. Conversely, when the trigger 610 is pressed down, causing the air valve stem 600 to be in the lowered state, the valve part 620 opens to seal the input end of the connector diversion chamber 510. This makes the air intake switch of the art spray gun of this utility model more convenient and flexible.

[0056] The air diversion component 500 within the diversion cavity 110 of the gun body 100 can be flexibly installed and removed, allowing for the use of more suitable materials and more precise machining methods to ensure effective airflow guidance. The air diversion component 500 can also be replaced as needed.

[0057] In some embodiments of this utility model, the lower opening of the air splitter 500 serves as the input port 511 of the connector splitter cavity, which is the input end of the connector splitter cavity 510 in the air splitter 500. The side wall of the air splitter 500 is provided with an output port 512 of the connector splitter cavity, which is the output end of the connector splitter cavity 510 in the air splitter 500.

[0058] In some embodiments of this utility model, reference is made to Figure 7 , Figure 13 A gas source connector 700 is provided on the lower side of the connector diversion cavity 510. The gas source connector 700 has an inner cavity, and an upper positioning plate 710 with an upper positioning hole 711 is provided on the upper side of the inner cavity of the gas source connector 700. A lower positioning plate 720 with a lower positioning hole 721 is provided on the lower side of the inner cavity of the gas source connector 700. (Refer to...) Figure 12 The air valve stem 600 includes an upper valve stem 630 on the upper side and a lower valve stem 640 on the lower side. The upper valve stem 630 is inserted into the upper positioning hole 711, and the lower valve stem 640 is inserted into the lower positioning hole 721. In this way, the upper positioning hole 711 and the lower positioning hole 721 can guide the raising and lowering process of the air valve stem 600, ensuring that the raising and lowering process of the air valve stem 600 is precise and stable. The air source connector 700 can serve as the connector structure for connecting the external air source to the art spray gun of this utility model.

[0059] In some embodiments of this utility model, a trigger link 612 is connected to the upper end of the upper valve stem 630. The upper end of the trigger link 612 is connected to the lower end of the pressing trigger 610 via a rotating shaft, allowing the pressing trigger 610 to swing back and forth along the rotating shaft. When the pressing trigger 610 rotates backward, it can push against the ejector pin guide sleeve 210 and retract.

[0060] In some embodiments of this utility model, a guide sleeve boss 217 is provided on the front side of the ejector pin guide sleeve 210, and a locking spring 218 is installed on the guide sleeve boss 217. The locking spring 218 can press against the rear side of the trigger 610. When the trigger 610 rotates backward, it can press against the locking spring 218 to retract the ejector pin guide sleeve 210. This design can reduce wear on the trigger 610 and the ejector pin guide sleeve 210.

[0061] In some embodiments of this utility model, the trigger 610 is provided with a trigger locking groove 611. When the trigger 610 is in the rising state, the locking spring 218 can lock the trigger locking groove 611, which is equivalent to positioning the trigger 610.

[0062] In some embodiments of this utility model, an upper sealing plate 520 for the diversion chamber is provided on the upper side of the air diversion component 500, and the trigger connecting rod 612 passes through the upper sealing plate 520 to connect with the pressing trigger 610 and the upper valve stem 630. A trigger connecting rod sealing ring 613 is provided between the outer wall of the trigger connecting rod 612 and the upper sealing plate 520 to prevent air leakage from the gap between the trigger connecting rod 612 and the upper sealing plate 520.

[0063] In some embodiments of this utility model, a valve stem return spring 650 is fitted onto the lower valve stem 640. The valve stem return spring 650 is located between the valve part 620 and the lower positioning plate 720 of the connector. The upper end of the valve stem return spring 650 abuts against the bottom wall of the valve part 620, and the lower end of the valve stem return spring 650 abuts against the upper side of the lower positioning plate 720 of the connector. The valve stem return spring 650 can apply an upward return thrust to the air valve stem 600. This is equivalent to the air valve stem 600 being in an upward state when it is in the return state.

[0064] In some embodiments of this utility model, an upper through hole 712 is provided on the lower side of the upper positioning plate 710 of the connector. The upper side of the upper through hole 712 communicates with the upper positioning hole 711. An upper diversion hole 713 is provided next to the upper through hole 712, and the upper end of the upper diversion hole 713 communicates with the diversion cavity 510 of the connector. The valve part 620 and the valve sealing ring 621 cooperate to block the upper through hole 712, which is equivalent to blocking the input end of the diversion cavity 510 of the connector.

[0065] This design allows the valve section 620 to more easily seal the connector diversion chamber 510 without affecting the movement of the air valve stem 600. When the air valve stem 600 is open, the airflow can enter the connector diversion chamber 510 more quickly through the upper through hole 712 and the upper diversion hole 713.

[0066] In some embodiments of this utility model, a lower positioning vent 722 is provided on the lower positioning plate 720 of the connector to ensure that airflow can pass through the lower positioning vent 722 and enter the air source connector 700.

[0067] In some embodiments of this utility model, the air source connector 700 has a connector insertion end 730 on its upper side, and a connector insertion end sealing ring 731 is fitted onto the connector insertion end 730. The air source connector 700 is inserted into the connector splitting cavity inlet 511 of the air splitter 500 through the connector insertion end 730, thereby realizing the installation of the air source connector 700. The connector insertion end sealing ring 731 prevents airflow from leaking from the gap between the air source connector 700 and the air splitter 500.

[0068] In some embodiments of this utility model, reference is made to Figure 5 , Figure 7 The gun body 100 has a detachable elongated handle 900 on its lower side. The elongated handle 900 has an elongated handle cavity 910, the upper side of which communicates with the inner cavity of the air source connector 700. The air source connector 700 can be connected to an external air source through the elongated handle 900. At the same time, the elongated handle 900 also serves as a handle, making it convenient for the user to hold the elongated handle 900 of this utility model art spray gun for spraying work.

[0069] In some embodiments of this utility model, reference is made to Figure 16The shape of the elongated handle 900 can be flexibly designed to better suit the feel of the hand grip. The elongated handle 900 is fixedly connected to the gun body via handle locking screws 930. The number and position of the handle locking screws 930 depend on the shape of the elongated handle 900 and other factors.

[0070] In some embodiments of this utility model, reference is made to Figure 16 , Figure 17 An air conditioning quick connector 920 is located on the lower side of the long handle 900. The air conditioning quick connector 920 is used to connect an external air source. The airflow passes sequentially through the air conditioning quick connector 920, the long handle cavity 910, and the air source connector 700 before entering the gun body. The air conditioning quick connector 920 and the long handle 900 are fixedly connected by a quick connector nut 921 and a quick connector sealing gasket 922 to ensure that the air conditioning quick connector 920 is installed securely and without leakage.

[0071] In some embodiments of this utility model, the elongated handle cavity 910 has an upper handle connection port 911 and a lower handle connection port 912 at its upper and lower ends, respectively. The elongated handle cavity 910 is connected to the air source connector 700 through the upper handle connection port 911. The lower handle connection port 912 can be connected to an external air source.

[0072] In some embodiments of this utility model, reference is made to Figure 3 , Figure 8 The art spray gun of this utility model also includes a nozzle assembly 800, which includes a rear spray cap connector 810, a front spray cap 820, and a nozzle 830. The spray cap connector 810 has a central first paint channel hole 812 and an airflow channel hole 814, with each airflow channel hole 814 surrounding the outside of the first paint channel hole 812. The spray cap 820 has a spray cap hole 822 in the middle. The nozzle 830 covers the front end of the first paint channel hole 812, and a paint spray nozzle 832 is provided on the front side of the nozzle 830. The paint spray nozzle 832 extends forward through the spray cap hole 822. The gap between the outer wall of the paint spray nozzle 832 and the inner wall of the spray cap hole 822 serves as an airflow pressurization hole 823. Airflow can pass through the airflow channel hole 814 and be sprayed out from the airflow pressurization hole 823, and paint can pass through the first paint channel hole 812 and be sprayed out from the paint pressurization hole 833. This achieves the separation of paint and airflow at the nozzle assembly 800 position, ensuring that the airflow can pressurize the paint and achieve the paint atomization effect.

[0073] In some embodiments of this utility model, reference is made to Figure 15The spray cap connector 810 includes a central pillar portion 811 and an outer ring portion 813. The central pillar portion 811 has a first paint channel hole 812, and the outer ring portion 813 has an airflow channel hole 814. Paint can pass through the first paint channel hole 812. Airflow can pass through the airflow channel hole 814.

[0074] In some embodiments of this utility model, the spray cap 820 has a spray cap cavity 821 on its rear side and a spray cap hole 822 in the middle position of the spray cap 820. The spray cap cavity 821 is connected to the airflow channel hole 814. The airflow can pass through the airflow channel hole 814 and the spray cap cavity 821 and then be sprayed out from the spray cap hole 822.

[0075] In some embodiments of this utility model, a nozzle 830 is connected to the front side of the intermediate column portion 811. The nozzle 830 has a second paint channel hole 831, and a paint spray nozzle 832 is provided on the front side of the nozzle 830. The paint spray nozzle 832 extends forward through the spray cap hole 822. A gap is left between the outer wall of the paint spray nozzle 832 and the inner wall of the spray cap hole 822, which serves as an airflow pressurization hole 823. The front side of the ejector pin 200 is inserted into the second paint channel hole 831, and the gap between the outer wall of the front end of the ejector pin 200 and the inner wall of the front end of the second paint channel hole 831 serves as the paint pressurization hole 833.

[0076] The airflow passes sequentially through the airflow channel hole 814 and the spray cap cavity 821 before being ejected from the airflow pressurization hole 823. This ensures that the airflow from the external air source can be ejected through the airflow pressurization hole 823, pressurizing and dispersing the paint to achieve an atomization effect.

[0077] The paint can pass through the first paint channel hole 812 and the second paint channel hole 831 in sequence and then be sprayed out from the paint pressure hole 833 to form a line effect.

[0078] In some embodiments of this utility model, an outer ring portion 815 is provided on the front side of the outer side wall of the outer ring portion 813, and an outer ring portion tapered portion 816 is provided on the rear side of the outer ring portion tapered portion 815. The outer ring portion tapered portion 816 has a frustum-shaped structure, and the outer diameter of the front side of the outer ring portion tapered portion 816 is smaller than the outer diameter of the rear side of the outer ring portion tapered portion 816.

[0079] A conical part 825 is provided on the rear side of the inner wall of the spray cap cavity 821, and a threaded part 824 is provided on the front side of the conical part 825. The conical part 825 is also a frustum-shaped structure. The outer diameter of the front part of the conical part 825 is smaller than the outer diameter of the rear part of the conical part 825. The threaded part 824 is threadedly connected to the threaded part 815 of the outer ring part.

[0080] Specifically, the spray cap connector 810 and the spray cap 820 are connected by a threaded connection 815 on the outer ring of the spray cap 820 and a threaded connection 824 on the spray cap 820. After the spray cap connector 810 and the spray cap 820 are connected, the tapered portion 816 on the outer ring of the spray cap connector 810 aligns with the tapered portion 825 of the spray cap cavity of the spray cap 820. This tapered surface fit design ensures sufficient concentricity and a high degree of tightness after the spray cap connector 810 and the spray cap 820 are connected. This contributes to high concentricity during the movement of the ejector pin 200 and reduces the likelihood of misalignment.

[0081] In some embodiments of this utility model, a tapered portion 817 is provided on the front side hole wall of the intermediate column portion 811. A nozzle insertion portion 834 is located at the rear of the nozzle 830, and a tapered portion 835 is provided on the front side of the nozzle insertion portion 834. The nozzle insertion portion 834 of the nozzle 830 is inserted into the front hole of the intermediate column portion 811, while the tapered portion 817 of the intermediate column portion abuts against the tapered portion 835 of the nozzle. Both the tapered portion 817 of the intermediate column portion and the tapered portion 835 of the nozzle are frustum-shaped structures. The outer diameter of the front side of the tapered portion 817 of the intermediate column portion is larger than the outer diameter of the rear side of the tapered portion 817, and the outer diameter of the front side of the tapered portion 835 of the nozzle is larger than the outer diameter of the rear side of the tapered portion 835. Through this tapered surface fit design, the concentricity of the spray cap connector 810 and the nozzle 830 after connection is ensured to be sufficiently good, and the connection tightness is high. This ensures high concentricity during the movement of the thimble 200, making it less prone to eccentricity or other issues.

[0082] In some embodiments of this utility model, reference is made to Figure 2 The nozzle assembly 800 can be selected in different models as needed. For example, the nozzle 830 can be selected with orifice diameters of 0.2 / 0.3 / 0.5 / 0.7 / 0.8 / 1.0mm, etc.

[0083] In some embodiments of this utility model, the spray cap 820 is provided with a spray angle 826, and a spray hole 827 is opened on the spray angle 826, which communicates with the spray cap cavity 821. In this way, the airflow in the spray cap cavity 821 can pass through the spray hole 827 and disperse the sprayed paint from the side, thereby improving the atomization effect.

[0084] In some embodiments of this utility model, a protective cover 840 is provided on the front side of the spray cap 820, and a protective cover retaining ring 841 is provided on the outer edge of the protective cover 840 to block the sprayed paint from spreading outwards.

[0085] In some embodiments of this utility model, the outer edge of the spray cap connector 810 and the outer edge of the spray cap 820 are connected by a spray cap connecting ring 850.

[0086] In some embodiments of this utility model, reference is made to Figure 2 , Figure 3 The gun body 100 has a paint cup interface 130 on its upper side, and a paint cup 190 is provided on the paint cup interface 130. The paint cup 190 and the paint cup interface 130 are connected by threads. The paint cup 190 is used to hold paint. In this way, the paint cup 190 can be flexibly installed and removed, making it easy to freely select paint cups 190 of different capacities.

[0087] In some embodiments of this utility model, reference is made to Figure 14 The gun body 100 has a main paint channel 150, and an airflow buffer chamber 170 is provided on the front side of the gun body 100. The paint cup interface 130 is connected to the main paint channel 150 through the paint cup interface flow channel 131. When the nozzle assembly 800 is closed on the airflow buffer chamber 170, the front and rear sides of the airflow buffer chamber 170 are connected to the airflow channel hole 814 and the air flow channel 120, respectively. The rear end of the intermediate column part 811 is inserted into the front end of the main paint channel 150.

[0088] This achieves the separation of paint and airflow. The paint flows from the paint cup inlet 130 through the paint cup inlet channel 131, the main paint channel 150, the first paint channel hole 812, and connects to the second paint channel hole 831 of the nozzle 830. The airflow, on the other hand, flows through the air channel 120, the airflow buffer chamber 170, and the airflow channel hole 814 before entering the spray cap chamber 821.

[0089] In some embodiments of this utility model, a knob connecting cylinder 140 is provided on the rear side of the gun body 100, and a connecting cylinder opening window 141 is provided on the knob connecting cylinder 140. The position of the second adjusting top surface 411 of the adjusting knob 400 pressing against the first adjusting top surface 222 of the locking sleeve 220 can be observed through the connecting cylinder opening window 141.

[0090] In some embodiments of this utility model, a pin clamping seal 180 is provided between the paint main channel 150 and the pin assembly insertion hole 160 to prevent paint leakage into the pin assembly insertion hole 160 and out.

[0091] In some embodiments of this utility model, a paint cup connection port 191 is provided on the lower side of the paint cup 190, and the outer wall of the paint cup connection port 191 is threadedly connected to the inner wall of the paint cup interface 130.

[0092] In some embodiments of this utility model, a paint cup end cap 192 is provided on the upper side of the paint cup 190, and paint can be added to the paint cup 190 by opening the paint cup end cap 192.

[0093] In some embodiments of this utility model, the gun body 100 is made of copper forging and can be machined in one go using a high-precision CNC machining center, which makes the concentricity of the art spray gun of this utility model high and the connecting parts on the gun body 100 do not need to be welded.

[0094] The spray gun device according to a second aspect of the present invention includes the art spray gun according to the first aspect of the present invention described above.

[0095] According to the embodiments of this utility model, the spray gun can be automatically or manually controlled, which facilitates the flexible design of the spray gun's operation.

[0096] Other components and operations of the spray gun according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0097] The following is for reference. Figure 1 and Figure 2 The art airbrush according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0098] like Figure 1 and Figure 2 As shown, the art spray gun of this utility model embodiment includes a gun body 100, a ejector pin 200, an ejector pin guide sleeve 210, a locking sleeve 220, an ejector pin guide seat 300, an adjustment knob 400, an air splitter 500, an air valve stem 600, an air source connector 700, a nozzle assembly 800, and a long handle 900.

[0099] In actual operation, the art spray gun of this utility model supplies paint through the paint cup 190 and connects to an external air source through the lower connector 912 on the handle. By pressing down the trigger 610 with a finger, the air valve rod 600 is pushed down to open the air source inlet switch. The airflow can then pass sequentially through the lower connector 912 on the handle, the long handle cavity 910, the upper connector 911 on the handle, the inner cavity of the air source connector 700, the connector diversion cavity inlet 511, the connector diversion cavity 510, the connector diversion cavity outlet 512, the air flow channel 120, the airflow buffer cavity 170, and the airflow channel hole 814 into the spray cap cavity 821, and is sprayed out from the airflow pressurization hole 823 between the paint spray nozzle 832 and the inner wall of the spray cap hole 822, and the spray pattern hole 827.

[0100] Then, press and hold the trigger 610 and rotate it backward. The paint passes through the paint cup interface channel 131, the paint main channel 150, the first paint channel hole 812, and the second paint channel hole 831 in sequence, and is then sprayed out from the paint pressure hole 833 between the cone tip 201 of the ejector pin and the nozzle hole 836.

[0101] According to the art spray gun of this utility model embodiment, by setting it up in this way, at least the following effects can be achieved: by rotating the adjustment knob 400, the adjustment knob 400 is controlled to finely adjust the position along the thread, and the guide hole 310 in the ejector pin guide seat 300 guides the ejector pin guide sleeve 210. In this way, the position of the second adjustment top surface 411 against the first adjustment top surface 222 can be adjusted, and the retraction range of the ejector pin 200 can be adjusted to adjust the area of ​​the airflow pressurization hole 823 for precise control, so as to achieve precise control of the line width formed by the paint spraying.

Claims

1. An art airbrush, characterized in that, include: Gun body (100), on which a nozzle (830) is provided, the nozzle (830) having a nozzle hole (836), and a ejector pin guide seat (300) is provided inside the gun body (100). A ejector pin (200) is provided with a cone-shaped tip (201) on its front side. A paint pressure hole (833) is formed between the outer wall of the cone-shaped tip (201) and the wall of the nozzle hole (836). An ejector pin guide sleeve (210) is fitted on the outer wall of the ejector pin (200). A locking sleeve (220) is provided on the rear side of the ejector pin guide sleeve (210). The ejector pin guide sleeve (210) is fixedly connected to the ejector pin (200) through the locking sleeve (220). The rear end of the locking sleeve (220) has a first adjusting top surface (222). The ejector pin guide seat (300) can guide the ejector pin guide seat (300) to move. An adjustment knob (400) is threaded to the rear side of the gun body (100). The front end of the adjustment knob (400) has a second adjustment top surface (411), which abuts against the first adjustment top surface (222).

2. The art airbrush according to claim 1, characterized in that, The ejector pin guide seat (300) has a rear sealing edge (320) on its rear side. The outer wall of the ejector pin guide sleeve (210) is provided with a guide boss (211). The guide side wall (212) is located on the outer wall of the guide boss (211). The rear end of the guide boss (211) has a rear support surface (213). An ejector pin spring (230) is fitted on the outer wall of the ejector pin guide sleeve (210). The front and rear ends of the ejector pin spring (230) respectively abut against the rear support surface (213) of the guide boss and the rear sealing edge (320) of the guide seat.

3. The art airbrush according to claim 1, characterized in that, A locking block (214) is provided on the rear side of the ejector guide sleeve (210). Each locking block (214) is separated by a locking groove (215). The outer side of the locking block (214) has a locking block thread (216). The front side of the locking sleeve (220) is provided with a locking sleeve thread hole (221). The locking block thread (216) and the locking sleeve thread hole (221) are threadedly connected.

4. The art airbrush according to claim 1, characterized in that, The first adjustment top surface (222) and the second adjustment top surface (411) are corresponding conical surfaces. The radius of the front end of the first adjustment top surface (222) is greater than the radius of the rear end of the first adjustment top surface (222), and the radius of the front end of the second adjustment top surface (411) is greater than the radius of the rear end of the second adjustment top surface (411).

5. The art airbrush according to claim 1, characterized in that, A nozzle assembly (800) is provided on the front side of the gun body (100), and a flow-dividing cavity (110) is provided on the lower side of the gun body (100). An air flow channel (120) is provided between the front side of the flow-dividing cavity (110) and the rear side of the nozzle assembly (800). An air flow divider (500) is provided in the flow-dividing cavity (110). The air flow divider (500) has a connector flow-dividing cavity (510). The front side of the connector flow-dividing cavity (510) serves as an output end and is connected to the rear end of the air flow channel (120). The lower opening of the connector flow-dividing cavity (510) serves as an input end. An air valve stem (600) is inserted into the connector diversion cavity (510). The upper end of the air valve stem (600) extends out of the air diversion component (500). A pressing trigger (610) is connected to the upper end of the air valve stem (600). A valve part (620) is provided on the outer wall of the air valve stem (600). A valve sealing ring (621) is provided on the valve part (620). The valve part (620) and the valve sealing ring (621) can block the input end of the connector diversion cavity (510).

6. The art airbrush according to claim 5, characterized in that, A gas source connector (700) is provided on the lower side of the connector diversion cavity (510). The gas source connector (700) has an inner cavity. An upper positioning plate (710) is provided on the upper side of the inner cavity of the gas source connector (700). The upper positioning plate (710) has an upper positioning hole (711). A lower positioning plate (720) is provided on the lower side of the inner cavity of the gas source connector (700). The lower positioning plate (720) has a lower positioning hole (721). The air valve stem (600) includes an upper valve stem (630) on the upper side and a lower valve stem (640) on the lower side. The upper valve stem (630) is inserted into the upper positioning hole (711), and the lower valve stem (640) is inserted into the lower positioning hole (721).

7. The art airbrush according to claim 6, characterized in that, The gun body (100) is provided with a detachable long handle (900) on the lower side. The long handle (900) has a long handle cavity (910). The upper side of the long handle cavity (910) is connected to the inner cavity of the air source connector (700).

8. The art airbrush according to claim 1, characterized in that, It also includes a nozzle assembly (800), which includes a rear spray cap connector (810), a front spray cap (820) and the nozzle (830). The spray cap connector (810) has a central first paint channel hole (812) and an airflow channel hole (814), with each of the airflow channel holes (814) surrounding the outside of the first paint channel hole (812); The spray cap (820) has a spray cap hole (822) in the middle position; The nozzle (830) covers the front end of the first paint channel hole (812). A paint spray nozzle (832) is provided on the front side of the nozzle (830). The paint spray nozzle (832) extends forward through the spray cap hole (822). The gap between the outer wall of the paint spray nozzle (832) and the inner wall of the spray cap hole (822) serves as an airflow pressurization hole (823). Airflow can pass through the airflow channel hole (814) and be sprayed out from the airflow pressurization hole (823). Paint can pass through the first paint channel hole (812) and be sprayed out from the paint pressurization hole (833).

9. The art airbrush according to claim 1, characterized in that, The spray cap connector (810) includes a central column portion (811) and an outer ring portion (813). The central column portion (811) has a first paint channel hole (812), and the outer ring portion (813) has an airflow channel hole (814).

10. The art airbrush according to claim 1, characterized in that, The gun body (100) has a paint cup interface (130) on its upper side, and a paint cup (190) is provided on the paint cup interface (130). The paint cup (190) and the paint cup interface (130) are connected by threads.

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