An inkjet printing device

Abstract

The present invention discloses an inkjet printing device, which includes a spraying mechanism having a feeding channel and an atomizing discharging channel, a feeding mechanism connected to the feeding channel and used for providing printing materials to the spraying mechanism, and a printing part detachably connected to the spraying mechanism at a position corresponding to the atomizing discharging channel. A forming channel is formed in the printing part, with the first end communicating with the atomizing discharging channel and the second end penetrating through the outer surface of the printing part. The shape of the second end of the forming channel is adapted to the shape of the required radio frequency antenna to be printed. The spraying mechanism atomizes the printing materials, and the atomized printing materials are ejected in a divergent manner through the atomizing discharging channel and cover the second end of the forming channel. Due to the adoption of the above technical solution, the present invention can save working hours and improve processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency antenna processing, and particularly to a spraying device. Background Art

[0002] Currently, the TDP (Three Dimensional Printing) process is often used to manufacture radio frequency antennas, that is, the prepared conductive silver paste or conductive ink is sprayed on the antenna carrier through a spraying device to form a radio frequency antenna. The spray holes of the nozzles of existing spraying devices are all round holes. It is necessary to control the program to control the manipulator to drive the nozzle to move and spray along a preset route to form the required radio frequency antenna shape, which will cause waste of working hours and low processing efficiency. When radio frequency antennas of different shapes need to be sprayed, different control programs need to be compiled to make the manipulator drive the nozzle to move along different preset routes, so as to spray out radio frequency antennas of different shapes, which is time-consuming and laborious. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a spraying device capable of spraying radio frequency antennas with high efficiency.

[0004] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a spraying device, including a spraying mechanism having a feeding channel and an atomizing discharging channel, a feeding mechanism connected to the feeding channel and used to supply spraying materials to the spraying mechanism, and a spraying part detachably connected to the spraying mechanism at a position corresponding to the atomizing discharging channel. A forming channel is formed in the spraying part, with the first end communicating with the atomizing discharging channel and the second end penetrating the outer surface of the spraying part. The shape of the second end of the forming channel is adapted to the shape of the radio frequency antenna to be sprayed. The spraying mechanism atomizes the spraying materials, and the atomized spraying materials are sprayed out in a divergent shape through the atomizing discharging channel and cover the second end of the forming channel.

[0005] Further, the spraying mechanism includes a receiving portion having a receiving cavity. One end of the receiving cavity communicates with the feeding mechanism through the feeding channel, and the other end of the receiving cavity communicates with the forming channel through the atomizing discharge channel. The spraying mechanism further includes a pressurizing channel with one end communicating with the receiving cavity and the other end communicating with external pressurized gas, a blocking portion for blocking the feeding channel when pressurizing the receiving cavity, and an atomizing mechanism for converting the printing material in the receiving cavity into atomized printing material under the action of the pressurized gas. The atomizing mechanism includes an elastic atomizing block and a rod. The atomizing discharge channel is formed in the elastic atomizing block. The first end of the rod penetrates into the receiving cavity, and the second end expands into the atomizing discharge channel. The second end of the rod is a conical section with the tip facing the printing portion, and an annular atomizing nozzle is formed between the conical section and the inner peripheral wall of the atomizing discharge channel.

[0006] Further, the blocking portion includes a blocking member disposed at a position corresponding to the feeding channel in the receiving cavity and an elastic member disposed in the receiving cavity. The elastic member is used to hold the blocking member against the position of the cavity wall of the receiving cavity corresponding to the feeding channel so that the blocking member blocks the feeding channel.

[0007] Further, the receiving cavity includes a main cavity formed in the receiving portion and a flow-limiting orifice cavity formed in the receiving portion with its first end communicating with the main cavity and its second end communicating with the atomizing discharge channel. One end of the main cavity communicates with the feeding mechanism through the feeding channel. One end of the pressurizing channel communicates with the main cavity and the other end communicates with external pressurized gas. The elastic member and the blocking member are both located in the main cavity. The elastic member is used to hold the blocking member against the position of the cavity wall of the main cavity corresponding to the feeding channel so that the blocking member blocks the feeding channel. The first end of the rod penetrates into the main cavity, and the second end passes through the flow-limiting orifice cavity and then expands into the atomizing discharge channel. The rod is in clearance fit with the flow-limiting orifice cavity.

[0008] Furthermore, the main cavity includes a feed cavity formed in the accommodating portion and a material accumulation cavity formed in the accommodating portion and connected to the feed cavity at a first end and connected to the flow limiting cavity at a second end. The diameter of the material accumulation cavity is smaller than the diameter of the feed cavity and larger than the diameter of the flow limiting cavity; one end of the feed cavity is connected to the feeding mechanism through the feed channel, one end of the pressure charging channel is connected to the feed cavity, and the other end is connected to the external pressurized gas; the elastic member and the sealing member are both located in the feed cavity; the elastic member is used to hold the sealing member against the cavity wall of the feed cavity at a position corresponding to the feed channel, so that the sealing member blocks the feed channel; the first end of the rod penetrates into the feed cavity, and the second end sequentially passes through the material accumulation cavity and the flow limiting cavity and then expands into the atomization discharge channel.

[0009] Furthermore, the accommodating portion includes a main body section and a fixed section detachably connected to the main body section, the feed cavity and the material accumulation cavity are both formed in the main body section, the flow limiting cavity is formed in the fixed section, and the elastic atomizing block is detachably connected to one end of the fixed section away from the main body section.

[0010] Furthermore, the printing part includes a printing part body and a connecting tube formed on the printing part body; the main section is formed with a limiting column adapted to the inner cavity of the connecting tube at a position corresponding to the inner cavity of the connecting tube, and the main section is formed with a supporting surface arranged around the limiting column at a position corresponding to the tube wall of the connecting tube, and after the limiting column is embedded in the inner cavity of the connecting tube and the supporting surface is supported by the end face of the connecting tube away from the printing part body, the connecting tube magnetically attracts the supporting surface, and the fixing section and the elastic atomizing block are located in the connecting tube and are pressed between the main section and the printing part body.

[0011] Furthermore, the main body section is recessed inwardly at a position of the material accumulation cavity on one side of the main body section facing the fixed section, and an embedding groove is formed; the fixed section is protruded outwardly at a position corresponding to the embedding groove on one side of the main body section, and an embedding block is formed that is adapted to the embedding groove; the first end of the flow limiting cavity passes through the embedding block and is connected to the material accumulation cavity; the fixed section is protruded outwardly at a position corresponding to the flow limiting cavity on the side of the elastic block facing the fixed section, and an embedding convex ring is formed; the elastic atomizing block is recessed inwardly at a position corresponding to the embedding convex ring on the side of the fixed section, and an embedding ring groove that is adapted to the embedding convex ring is formed; the flow limiting cavity is located in an area enclosed by the embedding convex ring on the end face of the fixed section facing the elastic atomizing block, and the atomizing discharge channel is located in an area enclosed by the embedding ring groove on the end face of the elastic atomizing block facing the fixed section.

[0012] Further, the feeding mechanism includes a feeding cylinder, a feeding cavity formed inside the feeding cylinder and communicating with the feeding channel, a raw material channel formed on the cylinder wall of the feeding cylinder and used to fill the spraying material into the feeding cavity, and a gas channel formed on the cylinder wall of the feeding cylinder and used to fill gas into the feeding cavity.

[0013] Further, one end surface of the spraying mechanism corresponding to the feeding channel is recessed inward to form an annular groove, and the feeding channel is located within the area surrounded by the annular groove on the spraying mechanism; the feeding mechanism further includes an annular protrusion extending from the position of the feeding cylinder corresponding to the annular groove into the annular groove and a communication hole formed on the part of the cylinder wall of the feeding cylinder located inside the annular protrusion. The annular protrusion is adapted to the annular groove and is threadedly connected to the annular groove, and the communication hole is used to communicate the feeding cavity and the feeding channel.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0015] When using a spraying device of the present invention to spray a radio frequency antenna, the feeding mechanism provides the spraying material to the spraying mechanism through the feeding channel. The spraying mechanism atomizes the spraying material. The atomized spraying material is sprayed out in a divergent shape through the atomized discharge channel and covers the second end of the forming channel. Then, the atomized spraying material is sprayed out through the second end of the forming channel and adheres to the antenna carrier. Since the shape of the second end of the forming channel is adapted to the shape of the radio frequency antenna to be sprayed, the atomized spraying material sprayed out from the forming channel can directly and quickly form the shape of the required radio frequency antenna on the antenna carrier. The spraying device does not need to spray while moving during the spraying process, which can save working hours and improve processing efficiency. The spraying part is detachably connected to the spraying mechanism, and multiple different spraying parts can be made. The shapes of the second ends of the forming channels of the respective spraying parts are different and are respectively adapted to the shapes of different radio frequency antennas. By replacing different spraying parts on the spraying mechanism, radio frequency antennas of different shapes can be sprayed on the antenna carrier, which is very convenient, time-saving and labor-saving when different shapes of radio frequency antennas need to be sprayed. Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of a preferred embodiment of a spraying device of the present invention;

[0018] Figure 2 It is a schematic structural view of another perspective of an inkjet printing device of the present invention;

[0019] Figure 3 is Figure 2 the A-A sectional view of;

[0020] Figure 4 is Figure 3 the enlarged view of a in;

[0021] Figure 5 It is a schematic structural view of a feeding mechanism in an inkjet printing device of the present invention;

[0022] Figure 6 is Figure 5 the B-B sectional view of;

[0023] Figure 7 It is a schematic structural view of a spraying mechanism in an inkjet printing device of the present invention;

[0024] Figure 8 is Figure 7 the C-C sectional view of;

[0025] Figure 9 It is a schematic structural view of a printing part in an inkjet printing device of the present invention;

[0026] Figure 10 is Figure 9 the D-D sectional view of.

[0027] The meanings of the reference numerals in the drawings are as follows:

[0028] Feeding mechanism - 1; Spraying mechanism - 2; Printing part - 3; Feeding channel - 21; Atomizing discharge channel - 22; Forming channel - 31; Feeding cylinder - 11; Feeding cavity - 12; Raw material channel - 13; Gas channel - 14; Annular protrusion - 15; Communication hole - 16; Drainage rod - 17; Annular groove - 23; Accommodating part - 24; Pressurizing channel - 25; Sealing part - 26; Atomizing mechanism - 27; Main body section - 241; Fixed section - 242; Accommodating cavity - 243; Embedding groove - 2411; Embedding block - 2421; Embedding convex ring - 2422; Limit post - 2412; Supporting surface - 2413; Main cavity - 2431; Flow-limiting hole cavity - 2432; Feeding cavity body - 2431a; Accumulated material hole cavity - 2431b Sealing member - 261; Elastic member - 262; Elastic atomizing block - 271; Rod member - 272; Embedding ring groove - 2711; Conical section - 2721; Annular atomizing nozzle - 221; Printing part body - 32; Connecting cylinder - 33. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without any creative efforts shall fall within the scope of protection of this application.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit this invention.

[0032] Such as Figures 1-4As shown in the figure, an embodiment of a printing device of the present invention includes a feeding mechanism 1, a spraying mechanism 2, and a printing part 3. The spraying mechanism 2 has a feeding channel 21 and an atomizing discharging channel 22. The feeding mechanism 1 is communicated with the feeding channel 21. The feeding mechanism 1 is used to provide printing material for the spraying mechanism 2, and the printing material is conductive silver paste. It can be understood that the printing material is not limited to conductive silver paste. For example, in some embodiments, the printing material can also be conductive ink, etc. The printing part 3 is arranged at a position corresponding to the atomizing discharging channel 22 on the spraying mechanism 2. A forming channel 31 is formed in the printing part 3. The first end of the forming channel 31 is communicated with the atomizing discharging channel 22, and the second end of the forming channel 31 penetrates the outer surface of the printing part 3. The shape of the second end of the forming channel 31 is adapted to the shape of the radio frequency antenna to be printed. The spraying mechanism 2 atomizes the printing material, and the atomized printing material is ejected in a divergent shape through the atomizing discharging channel 22 and covers the second end of the forming channel 31. The printing part 3 is detachably connected to the spraying mechanism 2. The printing device of the present invention has the advantages of saving working hours and improving processing efficiency. When using the printing device of the present invention to print a radio frequency antenna, the feeding mechanism 1 provides printing material for the spraying mechanism 2 through the feeding channel 21. The spraying mechanism 2 atomizes the printing material, and the atomized printing material is ejected in a divergent shape through the atomizing discharging channel 22 and covers the second end of the forming channel 31. Then, the atomized printing material is ejected through the second end of the forming channel 31 and adheres to the antenna carrier. Since the shape of the second end of the forming channel 31 is adapted to the shape of the radio frequency antenna to be printed, the atomized printing material ejected from the forming channel 31 can directly and quickly form the shape of the radio frequency antenna to be printed on the antenna carrier, and the printing device does not need to print while moving during the printing process. The printing part 3 is detachably connected to the spraying mechanism 2, and multiple different printing parts 3 can be made. The shapes of the second ends of the forming channels 31 of each printing part 3 are different and are respectively adapted to the shapes of different radio frequency antennas. By replacing different printing parts 3 on the spraying mechanism 2, radio frequency antennas of different shapes can be printed on the antenna carrier, which is very convenient, time-saving and labor-saving when different shapes of radio frequency antennas need to be printed.

[0033] As Figure 5 and Figure 6As shown, the feeding mechanism 1 includes a feeding cylinder 11, a feeding chamber 12, a raw material channel 13, a gas channel 14, an annular protrusion 15, a communication hole 16, and a drainage rod 17. The feeding chamber 12 is formed inside the feeding cylinder 11. The feeding chamber 12 communicates with the feeding channel 21. The raw material channel 13 is formed on the wall of the feeding cylinder 11. The raw material channel 13 is used to fill the feeding chamber 12 with printing material. The gas channel 14 is formed on the wall of the feeding cylinder 11. The gas channel 14 is used to fill the feeding chamber 12 with gas. During use, a feeding pipe is connected to the end of the raw material channel 13 away from the feeding chamber 12, and a valve is provided on the feeding pipe. When it is necessary to inject printing material into the feeding chamber 12, the valve is opened, and the printing material is filled into the feeding chamber 12 through the raw material channel 13. After the process of filling the feeding chamber 12 with printing material is completed, the valve is closed, and then gas is filled into the feeding chamber 12 through the gas channel 14 to pressurize the feeding chamber 12, and the printing material in the feeding chamber 12 is pressed into the spraying mechanism 2 through the feeding channel 21.

[0034] The annular protrusion 15 extends outward (in the direction of the outside of the feeding cylinder 11) from the direction of the feeding cylinder 11 corresponding to the feeding channel 21. The communication hole 16 is formed in the area surrounded by the annular protrusion 15 on the wall of the feeding cylinder 11. The communication hole 16 is used to communicate the feeding chamber 12 and the feeding channel 21, so as to realize the communication between the feeding chamber 12 and the feeding channel 21, and further realize the communication between the feeding mechanism 1 and the feeding channel 21.

[0035] As Figure 7 and Figure 8As shown, the injection mechanism 2 includes an annular groove 23, a receiving portion 24, a pressure charging passage 25, a blocking portion 26, and an atomizing mechanism 27. The annular groove 23 is formed by inward depression from one end surface of the injection mechanism 2 corresponding to the feed passage 21. Specifically, the annular groove 23 is formed by inward depression from one end surface of the receiving portion 24 corresponding to the feed passage 21. The feed passage 21 is located within the area surrounded by the annular groove 23 on the injection mechanism 2. Specifically, the feed passage 21 is located within the area surrounded by the annular groove 23 on the receiving portion 24. The annular protrusion 15 extends into the annular groove 23 from the position of the supply cylinder 11 corresponding to the annular groove 23. The annular protrusion 15 is adapted to the annular groove 23 and is threadedly connected within the annular groove 23. Specifically, an internal thread is formed on the outer wall of the annular groove 23, and an external thread is formed on the outer wall of the annular protrusion 15. The annular protrusion 15 and the annular groove 23 are connected by screwing of the internal thread and the external thread. Through the threaded connection between the annular protrusion 15 and the annular groove 23, the connection between the supply cylinder 11 and the injection mechanism 2 is realized, and it is very convenient to disassemble and assemble the supply cylinder 11 on the injection mechanism 2. It can be understood that the connection methods of the supply cylinder 11 and the injection mechanism 2 are not limited to the above description. For example, in some embodiments, an external thread can also be provided on the inner wall of the annular groove 23, and an internal thread can be provided on the inner wall of the annular protrusion 15, which can also realize the threaded connection between the annular protrusion 15 and the threaded groove; for another example, in some other embodiments, the supply cylinder 11 can also be integrally formed with the injection mechanism 2.

[0036] The receiving portion 24 includes a main body section 241, a fixing section 242, and a receiving cavity 243. The fixing section 242 is detachably connected to the main body section 241. Specifically, the fixing section 242 is pressed between the main body section 241 and the printing section 3. After the printing section 3 is removed from the injection mechanism 2, the fixing section 242 loses the pressing of the printing section 3. At this time, the fixing section 242 can be removed from the main body section 241, which is convenient for disassembling and replacing the fixing section 242. The connection method between the fixing section 242 and the main body section 241 is not limited to the above. For example, in some embodiments, the fixing section 242 can also be detachably connected to the main body section 241 by screws. In this way, the fixing section 242 can also be detachably connected to the main body section 241; for another example, in some other embodiments, the fixing section 242 can also be integrally formed with the main body section 241. The feed passage 21 is formed on the main body section 241. The annular groove 23 is formed by inward depression from one end surface of the main body section 241 corresponding to the feed passage 21. The feed passage 21 is located within the area surrounded by the annular groove 23 on the main body section 241.

[0037] The main body section 241 has one end facing the fixed section 242, which is recessed inward to form an embedding groove 2411. The fixed section 242 has an outwardly protruding block 2421 at a position corresponding to the embedding groove 2411, which is adapted to the embedding groove 2411. The side of the fixed section 242 facing away from the main body section 241 protrudes outward to form an embedding convex ring 2422. The embedding block 2421 and the embedding groove 2411 cooperate to define the position of the fixed section 242 on the main body section 241, thereby strengthening the connection stability between the fixed section 242 and the main body section 241. When the fixed section 242 is pressed between the printing unit 3 and the main body section 241, the fixed section 242 will not undergo lateral displacement relative to the main body section 241.

[0038] The main body section 241 is formed with a limiting column 2412 and a supporting surface 2413 arranged around the limiting column 2412 . The fixing section 242 is detachably connected to the limiting column 2412 . The embedding groove 2411 is formed on the limiting column 2412 .

[0039] A portion of the accommodating chamber 243 is located in the main section 241, and the other portion is located in the fixed section 242. One end of the accommodating chamber 243 is connected to the feeding mechanism 1 through the feed channel 21. Specifically, one end of the accommodating chamber 243 is connected to the connecting hole 16 through the feed channel 21, and then connected to the feeding chamber 12. The other end of the accommodating chamber 243 is connected to the forming channel 31 through the atomization discharge channel 22.

[0040] The accommodating cavity 243 includes a main cavity 2431 and a current-limiting orifice cavity 2432. The main cavity 2431 is formed within the accommodating portion 24. Specifically, the main cavity 2431 is formed within the main body section 241. The current-limiting orifice cavity 2432 is formed within the accommodating portion 24. Specifically, the current-limiting orifice cavity 2432 is formed within the fixed section 242. The current-limiting orifice cavity 2432 is located within the region enclosed by the embedded convex ring 2422 on the side of the fixed section 242 facing away from the main body section 241. The first end of the current-limiting orifice cavity 2432 communicates with the main cavity 2431, that is, the first end of the current-limiting orifice cavity 2432 penetrates through the embedded block 2421 and then communicates with the main cavity 2431. The second end of the current-limiting orifice cavity 2432 communicates with the atomizing discharge channel 22. One end of the main cavity 2431 is communicated with the feeding mechanism 1 through the feeding channel 21. Specifically, the main cavity 2431 is communicated with the communication hole 16 through the feeding channel 21, and further communicated with the feeding cavity 12. The current-limiting orifice cavity 2432 is separately processed on the fixed section 242, and its two ends are respectively communicated with the two ends of the fixed section 242, which is very convenient for processing the current-limiting orifice cavity 2432. After the fixed section 242 is detached from the main body section 241, it is also convenient to clean and maintain the current-limiting orifice cavity 2432.

[0041] The main cavity 2431 includes a feeding cavity 2431a and an accumulating orifice cavity 2431b. The feeding cavity 2431a is formed within the accommodating portion 24. Specifically, the feeding cavity 2431a is formed within the main body section 241. The accumulating orifice cavity 2431b is formed within the accommodating portion 24. Specifically, the accumulating orifice cavity 2431b is formed within the main body section 241. The embedding groove 2411 is recessed inward from the side of the main body section 241 facing the fixed section 242 at a position corresponding to the accumulating orifice cavity 2431b. The first end of the accumulating orifice cavity 2431b communicates with the feeding cavity 2431a. The second end of the accumulating orifice cavity 2431b communicates with the current-limiting orifice cavity 2432. The first end of the current-limiting orifice cavity 2432 penetrates through the embedded block 2421 and then communicates with the accumulating orifice cavity 2431b. The diameter of the accumulating orifice cavity 2431b is smaller than the diameter of the feeding cavity 2431a. The diameter of the accumulating orifice cavity 2431b is larger than the diameter of the current-limiting orifice cavity 2432. One end of the feeding cavity 2431a is communicated with the feeding mechanism 1 through the feeding channel 21. Specifically, the feeding cavity 2431a is communicated with the communication hole 16 through the feeding channel 21, and further communicated with the feeding cavity 12.

[0042] One end of the pressure charging channel 25 communicates with the accommodation cavity 243, and the other end of the pressure charging channel 25 communicates with external pressure charging gas. Specifically, one end of the pressure charging channel 25 communicates with the main cavity 2431, and the other end of the pressure charging channel 25 communicates with external pressure charging gas. Further specifically, the pressure charging channel 25 communicates with the feeding cavity 2431a of the main cavity 2431; the pressure charging channel 25 is arranged on the accommodating part 24 and penetrates the outer surface of the accommodating part 24. Specifically, the pressure charging channel 25 is arranged on the main body section 241 of the accommodating part 24, and one end of the pressure charging channel 25 penetrating the outer surface of the accommodating part 24 is connected to a charging pipeline, so that pressure charging gas can be filled into the accommodation cavity 243 through the pressure charging channel 25. During the use of an inkjet printing device of the present invention, the feeding cavity 2431a, the material accumulating hole cavity 2431b, and the flow limiting hole cavity 2432 are arranged in the up-down direction. After the printing material enters the feeding cavity 2431a, the printing material can flow into and be stored in the material accumulating hole cavity 2431b. Then, pressure charging gas is filled into the feeding cavity 2431a through the pressure charging channel 25 communicating with the feeding cavity 2431a, and the pressure charging gas squeezes the printing material in the material accumulating hole cavity 2431b downward to ensure that the printing material can stably enter the flow limiting hole cavity 2432.

[0043] The blocking part 26 is used for blocking the feeding channel 21 when charging the accommodation cavity 243. The blocking part 26 includes a blocking member 261 and an elastic member 262. The blocking member 261 is arranged at a position corresponding to the feeding channel 21 in the accommodation cavity 243. The elastic member 262 is a spring or a soft elastic rubber column. The elastic member 262 is arranged in the accommodation cavity 243, and the elastic member 262 is used for abutting the blocking member 261 against the position of the cavity wall of the accommodation cavity 243 corresponding to the feeding channel 21. Specifically, both the elastic member 262 and the blocking member 261 are located in the main cavity 2431, and the elastic member 262 is used for abutting the blocking member 261 against the position of the cavity wall of the main cavity 2431 corresponding to the feeding channel 21. Further specifically, both the elastic member 262 and the blocking member 261 are located in the feeding cavity 2431a, and the elastic member 262 is used for abutting the blocking member 261 against the position of the cavity wall of the feeding cavity 2431a corresponding to the feeding channel 21, that is, one end of the elastic member 262 abuts the blocking member 261 on the cavity wall of the feeding cavity 2431a where the feeding channel 21 is located, and the other end abuts on the other cavity wall of the feeding cavity 2431a opposite to the cavity wall where the feeding channel 21 is located. With this structure, the blocking member 261 can block the feeding channel 21.

[0044] One end of the drainage rod 17 is located in the feeding cavity 12. The other end of the drainage rod 17 sequentially passes through the middle of the communication hole 16 and the middle of the feeding channel 21 and is fixed to the plugging member 261. The drainage rod 17 plays a role in drainage, enabling the printing material to enter the feeding channel 21 from the feeding cavity 12 more stably.

[0045] The atomization mechanism 27 is used to convert the printing material in the accommodation cavity 243 into atomized printing material under the action of the pressurized gas. The atomization mechanism 27 includes an elastic atomization block 271 and a rod 272. The elastic atomization block 271 is made of elastic rubber or elastic silica gel. The atomization discharge channel 22 is formed in the elastic atomization block 271. The elastic atomization block 271 is located on the side of the fixed section 242 away from the main body section 241. The elastic atomization block 271 is detachably connected to one end of the fixed section 242 away from the main body section 241. Specifically, the fixed section 242 and the elastic atomization block 271 are pressed between the main body section 241 and the printing part 3. After the printing part 3 is removed from the spraying mechanism 2, the fixed section 242 and the elastic atomization block 271 lose the pressing of the printing part 3. At this time, the elastic atomization block 271 can be removed from the fixed section 242 and the fixed section 242 can be removed from the main body section 241, which is convenient for disassembling and replacing the fixed section 242 and the elastic atomization block 271. After the elastic atomization block 271 is removed from the fixed section 242, it is also convenient to clean and maintain the atomization discharge channel 22. Of course, the connection between the elastic atomization block 271 and the fixed section 242 is not limited to the above connection method. For example, in some embodiments, the elastic atomization block 271 can also be connected to the fixed section 242 by screws. In this way, the elastic atomization block 271 can also be detachably connected to the fixed section 242. Another example is that in some other embodiments, the elastic atomization block 271 can also be adhesively connected to the fixed section 242.

[0046] The embedded convex ring 2422 is formed by protruding outward from the end face of the fixed section 242 facing the elastic atomization block 271 at a position corresponding to the current-limiting hole cavity 2432. A recessed embedded ring groove 2711 adapted to the embedded convex ring 2422 is formed by recessing inward on the side face of the elastic atomization block 271 corresponding to the position of the embedded convex ring 2422. The atomization discharge channel 22 is located within the area surrounded by the embedded ring groove 2711 on the end face of the elastic atomization block 271 facing the fixed section 242. The embedded convex ring 2422 and the embedded ring groove 2711 can cooperate to define the position of the elastic atomization block 271 on the fixed section 242, and can strengthen the connection stability between the elastic atomization block 271 and the fixed section 242. After the elastic atomization block 271 and the fixed section 242 are pressed between the printing part 3 and the main body section 241, the elastic atomization block 271 will not undergo lateral displacement relative to the fixed section 242.

[0047] The first end of the rod 272 penetrates into the accommodation cavity 243, and the second end expands into the atomization discharge channel 22. Specifically, the first end of the rod 272 penetrates into the main cavity 2431, and the second end penetrates through the current-limiting hole cavity 2432 and then expands into the atomization discharge channel 22. More specifically, the first end of the rod 272 penetrates into the feed cavity 2431a, and the first end of the rod 272 is connected to the plugging member 261 in the feed cavity 2431a. The second end of the rod 272 penetrates through the material accumulation hole cavity 2431b and the current-limiting hole cavity 2432 in sequence and then expands into the atomization discharge channel 22. The second end of the rod 272 is a tapered section 2721 with the tip facing the printing part 3. An annular atomization nozzle is formed between the tapered section 2721 and the inner peripheral wall of the atomization discharge channel 22. The rod 272 is in clearance fit with the current-limiting hole cavity 2432, and the current-limiting hole cavity 2432 can limit the flow of the printing material before the printing material enters the atomization discharge channel 22, so that the speed of the printing material ejected from the atomization discharge channel 22 is more stable. It can be understood that the first end of the rod 272 is not limited to being located within the feed cavity 2431a. For example, in some embodiments, the first end of the rod 272 can also be fixed within the material accumulation hole cavity 2431b.

[0048] Such as Figure 9 and Figure 10As shown, the printing unit 3 includes a printing unit body 32 and a connecting cylinder 33, and the connecting cylinder 33 is formed on the printing unit body 32; the limiting post 2412 is formed at a position of the main body section 241 corresponding to the inner cavity of the connecting cylinder 33, the limiting post 2412 is adapted to the inner cavity of the connecting cylinder 33, the abutting surface 2413 is formed at a position of the main body section 241 corresponding to the cylinder wall of the connecting cylinder 33. After the limiting post 2412 is inserted into the inner cavity of the connecting cylinder 33 and the abutting surface 2413 abuts against the end surface of the connecting cylinder 33 facing away from the printing unit body 32, the connecting cylinder 33 magnetically attracts the abutting surface 2413. The fixed section 242 and the elastic atomizing block 271 are located in the connecting cylinder 33 and are pressed between the main body section 241 and the printing unit body 32. In this way, the printing unit 3 can be detachably connected to the spraying mechanism 2. By connecting the printing unit 3 and the spraying mechanism 2 in a magnetic attraction manner, it is very convenient to connect and disassemble the printing unit 3 on the spraying mechanism 2. It can be understood that the connection between the printing unit 3 and the spraying mechanism 2 is not limited to the above-mentioned detachable connection method. For example, in some embodiments, the connecting cylinder 33 and the limiting post 2412 can also be threadedly connected, and in this way, the detachable connection between the printing unit 3 and the spraying mechanism 2 can also be realized.

[0049] The working principle of the printing device according to the present invention is as follows:

[0050] During use, a feeding pipe is connected to the end of the raw material channel 13 away from the feeding cavity 12, and a valve is provided on the feeding pipe. When it is necessary to inject the printing material into the feeding cavity 12, the valve is opened, and the printing material is filled into the feeding cavity 12 through the raw material channel 13. After the process of filling the printing material into the feeding cavity 12 is completed, the valve is closed, and then gas is filled into the feeding cavity 12 through the gas channel 14 to pressurize the feeding cavity 12, and the printing material in the feeding cavity 12 is pressed against the plug 261 through the communication hole 16 and the feeding channel 21, and the plug 261 is pushed away from the wall of the feeding cavity 2431a where the feeding channel 21 is located and the elastic member 262 is compressed, so that the printing material can enter the feeding cavity 2431a from the gap between the plug 261 and the wall of the feeding cavity 2431a where the feeding channel 21 is located. After stopping filling gas into the feeding cavity 12, as the printing material in the feeding cavity 12 enters the accommodating cavity 243, the pressure in the feeding cavity 12 gradually decreases, and the elastic member 262 will reset and push the plug 261 to abut against the wall of the feeding cavity 2431a where the feeding channel 21 is located, so that the plug 261 blocks the second end of the feeding channel 21 again. During the process of using a printing device of the present invention, the feeding cavity 2431a, the material accumulation hole cavity 2431b and the flow limiting hole cavity 2432 are arranged in the direction from top to bottom. After the printing material enters the feeding cavity 2431a, the printing material can flow into and be stored in the material accumulation hole cavity 2431b. Then, pressurized gas is filled into the feeding cavity 2431a through the pressurization channel 25 communicating with the feeding cavity 2431a, and the pressurized gas presses the printing material in the material accumulation hole cavity 2431b downward, so that the printing material is pressed through the flow limiting hole cavity 2432 to the atomizing discharge channel 22. Since the elastic atomizing block 271 has elasticity and can undergo elastic deformation, the printing material pressed into the atomizing discharge channel 22 can be forcibly extruded at high speed from the annular atomizing nozzle to form atomized printing material. Since the second end of the rod member 272 is a conical section 2721 with the tip facing the printing portion 3, under the extrusion and bulging action of the conical section 2721, a conical surface is formed at the position where the inner wall of the atomizing discharge channel 22 contacts the conical section 2721, and the misty printing material ejected from between the conical section 2721 and the conical surface can be ejected in a divergent shape and cover the second end of the atomizing discharge channel 22, so that the shape of the required printed radio frequency antenna can be directly and quickly formed on the antenna carrier.

[0051] The above embodiments merely represent the preferred embodiments of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A printing device for printing radio frequency antennas, characterized in that: The invention comprises an injection mechanism having a feed channel and an atomizing discharge channel, a feeding mechanism connected to the feed channel and used for providing printing material to the injection mechanism, and a printing part detachably connected to the injection mechanism at a position corresponding to the atomizing discharge channel, the feeding mechanism being connected to a feeding pipe, and the feeding pipe being provided with a valve; a forming channel is formed in the printing part, the first end of which is connected to the atomizing discharge channel and the second end of which passes through the outer surface of the printing part, the shape of the second end of the forming channel being adapted to the shape of the radio frequency antenna required for printing, the injection mechanism atomizes the printing material, and the atomized printing material is sprayed out in a divergent shape through the atomizing discharge channel and covers the second end of the forming channel; The ejection mechanism includes a receiving portion having an accommodating chamber, a pressure channel having one end connected to the accommodating chamber and the other end connected to external pressurized gas, and an atomizing mechanism for converting the printing material in the accommodating chamber into atomized printing material under the action of the pressurized gas; the atomizing mechanism includes an elastic atomizing block, and the atomizing discharge channel is formed in the elastic atomizing block; The accommodating portion includes a main body section and a fixing section detachably connected to the main body section, wherein the fixing section is pressed between the main body section and the printing portion; The printing part includes a printing part body and a connecting tube formed on the printing part body; a limiting column adapted to the inner cavity of the connecting tube is formed at a position of the main body section corresponding to the inner cavity of the connecting tube, and a supporting surface arranged around the limiting column is formed at a position of the main body section corresponding to the tube wall of the connecting tube. After the limiting column is embedded in the inner cavity of the connecting tube and the supporting surface is supported by the end surface of the connecting tube away from the printing part body, the connecting tube magnetically attracts the supporting surface, and the fixing section and the elastic atomizing block are located in the connecting tube and are pressed between the main body section and the printing part body.

2. The inkjet printing device according to claim 1, characterized in that: One end of the accommodating chamber is connected to the feeding mechanism through the feed channel, and the other end of the accommodating chamber is connected to the forming channel through the atomizing discharge channel; the injection mechanism also includes a sealing portion for sealing the feed channel when the accommodating chamber is pressurized; the atomizing mechanism also includes a rod, the first end of the rod penetrates into the accommodating chamber, the second end expands into the atomizing discharge channel, and the second end of the rod is a tapered section with the tip facing the printing portion, and an annular atomizing nozzle is formed between the tapered section and the inner circumferential wall of the atomizing discharge channel.

3. A spraying device according to claim 2, wherein: The sealing portion includes a sealing member provided in the accommodating cavity at a position corresponding to the feed channel and an elastic member provided in the accommodating cavity, wherein the elastic member is used to hold the sealing member against the cavity wall of the accommodating cavity at a position corresponding to the feed channel so that the sealing member blocks the feed channel.

4. A spraying device according to claim 3, characterized in that: The accommodation cavity includes a main cavity formed within the accommodation portion and a restricted orifice cavity of the atomizing discharge channel that is formed within the accommodation portion and has a first end communicating with the main cavity and a second end communicating with the atomizing discharge channel; one end of the main cavity communicates with the feeding mechanism through the feeding channel, one end of the pressure charging channel communicates with the main cavity and the other end communicates with external pressurized gas. The elastic member and the plugging member are both located within the main cavity. The elastic member is used to abut the plugging member against the cavity wall of the main cavity corresponding to the position of the feeding channel so that the plugging member plugs the feeding channel. The first end of the rod penetrates into the main cavity, and the second end passes through the restricted orifice cavity and then expands into the atomizing discharge channel. The rod is in clearance fit with the restricted orifice cavity.

5. A printing device according to claim 4, characterized in that: The main cavity includes a feeding cavity formed within the accommodation portion and an accumulating cavity that is formed within the accommodation portion and has a first end communicating with the feeding cavity and a second end communicating with the restricted orifice cavity. The diameter of the accumulating cavity is smaller than that of the feeding cavity and larger than that of the restricted orifice cavity; one end of the feeding cavity communicates with the feeding mechanism through the feeding channel, one end of the pressure charging channel communicates with the feeding cavity and the other end communicates with external pressurized gas. The elastic member and the plugging member are both located within the feeding cavity. The elastic member is used to abut the plugging member against the cavity wall of the feeding cavity corresponding to the position of the feeding channel so that the plugging member plugs the feeding channel. The first end of the rod penetrates into the feeding cavity, and the second end sequentially passes through the accumulating cavity and the restricted orifice cavity and then expands into the atomizing discharge channel.

6. The inkjet printing device according to claim 5, characterized in that: Both the feeding cavity and the accumulating cavity are formed within the main body section, the restricted orifice cavity is formed within the fixed section, and the elastic atomizing block is detachably connected to one end of the fixed section facing away from the main body section.

7. The inkjet printing device according to claim 6, wherein: On one side of the main body section facing the fixed section, a recessed embedding groove is formed inwardly corresponding to the position of the accumulating cavity. On one side of the fixed section facing the main body section, a protruding embedding block is formed outwardly corresponding to the position of the embedding groove and is adapted to the embedding groove. The first end of the restricted orifice cavity penetrates through the embedding block and then communicates with the accumulating cavity; on the side of the fixed section facing the elastic atomizing block, a protruding embedding ring is formed outwardly corresponding to the position of the restricted orifice cavity. On the side of the elastic atomizing block facing the fixed section, a recessed embedding ring groove is formed inwardly corresponding to the position of the embedding ring and is adapted to the embedding ring. The restricted orifice cavity is located within the area surrounded by the embedding ring on the end face of the fixed section facing the elastic atomizing block, and the atomizing discharge channel is located within the area surrounded by the embedding ring groove on the end face of the elastic atomizing block facing the fixed section.

8. A jet printing device according to any one of claims 1 to 7, characterized in that: The feeding mechanism includes a feeding cylinder, a feeding cavity formed inside the feeding cylinder and communicating with the feeding channel, a raw material channel formed on the cylinder wall of the feeding cylinder and used to fill the printing material into the feeding cavity, and a gas channel formed on the cylinder wall of the feeding cylinder and used to fill gas into the feeding cavity.

9. The inkjet printing device according to claim 8, characterized in that: One end face of the spraying mechanism corresponding to the feeding channel is recessed inward to form an annular groove, and the feeding channel is located within the area surrounded by the annular groove on the spraying mechanism; the feeding mechanism further includes an annular protrusion extending from the position of the feeding cylinder corresponding to the annular groove into the annular groove and a communication hole formed on the part of the cylinder wall of the feeding cylinder located within the annular protrusion. The annular protrusion is adapted to the annular groove and is threadedly connected to the annular groove, and the communication hole is used to communicate the feeding cavity and the feeding channel.

Images