Melt-blown fiber nozzle and spray gun applying same

Abstract

The invention provides a melt-blowing fiber nozzle and a spray gun using the same. The melt-blowing fiber nozzle comprises a plurality of components such as a film spraying sheet, an upper air spraying sheet and a lower air spraying sheet. Glue liquid is adjusted to be in a plane state through a plurality of wide glue grooves in the glue inlet path, multi-point glue feeding and spraying are conducted after impurities are filtered through glue filtering holes, and the uniformity and stability of the glue liquid are improved. In the air inlet path, air is divided by the flow dividing groove, adjusted by the wide air grooves and filtered out impurities and then is sprayed out from the air outlet grooves of the upper air spraying piece and the lower air spraying piece, vortex-shaped air atomization glue liquid is formed around the glue outlet grooves, and the atomization effect is better. Adjacent sheets are tightly attached and sealed, stable flowing of glue and gas is guaranteed, leakage is prevented, pressure is stabilized, efficiency is improved, impurities are prevented, and the service life is prolonged. The nozzle overcomes the limitation of a traditional nozzle, solves the problems that the number of glue lines is limited by left and right air paths of the traditional nozzle, low-gram-weight or thin materials cannot be sprayed and compounded in a high-density mode, and glue overflows from the back face when the glue amount is large, provides an efficient and reliable spraying solution for industrial production, and can adapt to different glue spraying requirements and materials.

Description

Technical Field

[0001] The invention relates to the technical field of spray guns, and in particular to a melt-blown fiber nozzle and a spray gun using the nozzle. Background Art

[0002] In many industrial fields, spray gun is a commonly used tool, which is widely used in painting, gluing and other processes.

[0003] At present, when using a spray gun for operation, glue and gas are usually sprayed out through a nozzle on the spray gun, and the gas atomizes the glue to achieve a specific process effect. However, the existing spray guns still have some shortcomings in terms of atomization effect.

[0004] First, in terms of the design of the air intake path, the current air intake method of the spray gun is often relatively simple, and it is impossible to achieve precise control of the gas flow and pressure. This results in the speed and direction of the gas being sprayed being unstable, thus affecting the atomization effect of the glue. For example, the air intake channel design of some spray guns is unreasonable, which easily causes airflow turbulence, making it impossible for the gas to act evenly on the glue liquid, reducing the uniformity and fineness of the atomization.

[0005] Secondly, there are also problems with the design of the glue feeding path. The glue feeding method of some spray guns may cause the flow of glue to be unstable or the glue to be unevenly distributed at the nozzle. This will not only affect the atomization effect, but may also cause glue waste and clogging of the spray gun. For example, the size and shape of some glue feeding channels are improperly designed, which causes resistance in the flow of glue, affecting the smooth supply of glue.

[0006] In addition, the existing spray guns also need to be improved in terms of the synergistic effect of air intake and glue feeding. The unreasonable design of the air intake and glue feeding paths may cause the gas and glue liquid to be unable to be fully mixed, thus affecting the atomization effect. For example, in some spray guns, the position relationship between the air intake and glue feeding is unreasonable, so that the gas cannot fully play its role in atomizing the glue liquid, resulting in uneven particle size after atomization, affecting the process quality.

[0007] In summary, how to design the air intake and glue feeding paths of the spray gun to improve the atomization effect is an urgent problem to be solved in the current field of spray gun technology. Summary of the invention

[0008] In view of the problems pointed out in the background technology, the present invention proposes a melt-blown fiber nozzle and a spray gun using the nozzle to solve the above technical problems.

[0009] The technical solution of the present invention is achieved in this way: A melt-blown fiber nozzle, comprising A glue spraying sheet, wherein the glue spraying sheet is provided with a glue outlet groove, which is arranged along the front-back direction, and the glue outlet groove runs through the upper and lower sides and the front side of the thickness direction of the glue spraying sheet, and a plurality of glue outlet grooves are provided and are arranged at intervals in the left-right direction; The upper and lower sides of the glue spraying sheet are respectively provided with an upper jet sheet and a lower jet sheet, and the upper and lower jet sheets are respectively provided with air outlet grooves corresponding to the glue outlet grooves, and the air outlet grooves are arranged along the front-to-back direction, and the air outlet grooves penetrate the upper and lower sides and the front side of the thickness direction of the upper jet sheet or the lower jet sheet, and one glue outlet groove is correspondingly provided with two air outlet grooves, and the glue outlet groove is located between the corresponding two air outlet grooves, and the glue spraying sheet is provided with a connecting air hole corresponding to the rear end of the air outlet groove, and the upper jet sheet is provided with a glue inlet hole 1 corresponding to the rear end of the glue outlet groove; A film feeding sheet is provided on the upper side of the upper jet sheet, and a second glue feeding hole corresponding to the first glue feeding hole is provided on the film feeding sheet; A first wide film is provided on the upper side of the film feed sheet, a wide glue groove 1 is provided on the first wide film, the wide glue groove 1 runs through the upper and lower sides of the first wide film, and the glue feed holes 2 on the upper jet sheet are both connected to the wide glue groove 1; A rubber filter is provided on the upper side of the first wide rubber sheet, and a plurality of rubber filter holes are distributed in the area of ​​the rubber filter corresponding to the wide rubber groove, and the rubber filter holes are arranged through the upper and lower sides of the rubber filter; A second wide film is arranged on the upper side of the film filter, and a second wide film groove corresponding to the first wide film groove is arranged on the second wide film, and the second wide film groove runs through the upper and lower sides of the second wide film; A third wide film is arranged on the upper side of the second wide film, and a third wide glue groove correspondingly connected to the second wide glue groove is arranged on the third wide film, and the third wide glue groove runs through the upper and lower sides of the third wide film; An upper clamp is provided on the upper side of the third wide film, and a wide glue groove and three correspondingly connected glue inlets are provided on the upper clamp; A first wide air sheet is provided at the lower side of the lower air jet sheet, and a wide air slot 1 is provided on the first wide air sheet. The wide air slot 1 runs through the upper and lower sides of the first wide air sheet, and the rear end of the air inlet slot on the lower air jet sheet is connected to the wide air slot 1; An air filter is provided at the lower side of the first wide air sheet, and a plurality of air filter holes are distributed in the area of ​​the air filter corresponding to the wide air slot, and the air filter holes are arranged through the upper and lower sides of the air filter; A second wide air sheet is provided at the lower side of the air filter sheet, and a second wide air slot corresponding to the first wide air slot is provided on the second wide air sheet, and the second wide air slot runs through the upper and lower sides of the second wide air sheet; A gas diverter sheet is provided at the lower side of the second wide gas sheet, and a gas diverter slot corresponding to and connected to the second wide gas slot is provided on the gas diverter sheet, and the gas diverter slot runs through the upper and lower sides of the gas diverter sheet; A lower clamping piece is provided on the lower side of the gas diverter piece; It also includes air inlet holes that penetrate the second wide air sheet, the air filter sheet, the first wide air sheet, the lower air jet sheet, the glue spray sheet, the upper air jet sheet, the film feed sheet, the first wide film, the glue filter sheet, the second wide film, and the third wide film. The upper clamp is provided with an air inlet port connected to the air inlet hole, and the air inlet hole is connected to the gas diversion groove.

[0010] The present invention is further configured to include fixing holes that penetrate the lower clamp, the gas diversion plate, the second wide gas plate, the gas filter, the first wide gas plate, the lower jet plate, the glue spray plate, the upper jet plate, the film feed plate, the first wide film, the glue filter, the second wide film, the third wide film, and the upper clamp.

[0011] The present invention is further configured to include positioning holes that penetrate the lower clamp, the gas diversion plate, the second wide gas plate, the gas filter, the first wide gas plate, the lower jet plate, the glue spray plate, the upper jet plate, the film feed plate, the first wide film, the glue filter, the second wide film, the third wide film, and the upper clamp.

[0012] The present invention is further configured such that the air outlets of the two air outlet grooves corresponding to the glue outlet grooves on the upper and lower air jet plates converge toward the middle and converge with the glue outlet at the front side of the corresponding glue outlet grooves.

[0013] The present invention is further configured such that the left and right sides of the front end of the glue outlet groove are respectively provided with a protrusion 1 protruding forward, and the front sides of the upper jet plate and the lower jet plate are respectively provided with a plurality of protrusions 2 protruding, the protrusions 2 are arranged corresponding to the glue outlet groove, the protrusion 2 is located between the two protrusions 1, and the corresponding two protrusions 1 and two protrusions 2 form a glue outlet nozzle.

[0014] The present invention is further configured such that the thickness of the glue spraying sheet, the upper air spraying sheet and the lower air spraying sheet is 0.25 mm.

[0015] The present invention is further configured such that the thickness of the gas diverter plate, the second wide gas plate, the gas filter plate, the first wide gas plate, the film feed plate, the first wide film, the film filter plate, the second wide film, and the third wide film is 0.3 mm.

[0016] The present invention is further configured such that the gas diversion groove is n-shaped, the two ends of the gas diversion groove are respectively connected to the second wide gas groove, and the middle of the gas diversion groove is connected to the air inlet.

[0017] A meltblown fiber spray gun comprises a gun body, wherein a glue feed channel and an air inlet channel are arranged in the gun body, the nozzle is mounted on the gun body, the glue feed channel is connected with a glue feed port, and the air inlet channel is connected with an air inlet port.

[0018] The present invention is further configured such that a filtering component capable of filtering the glue is provided in the glue inlet channel, and an opening and closing component capable of opening and closing the glue inlet is provided in the glue inlet channel.

[0019] By adopting the above technical solution, the beneficial effects of the present invention are as follows: First, the unique glue feeding path design allows the glue to pass through multiple wide glue grooves in sequence to be adjusted into a flat state, ensuring that the glue is evenly distributed. Impurities are then filtered out through the glue filter holes, and finally sprayed out from the glue outlet groove through a multi-point glue feeding method, which improves the uniformity and stability of the glue spraying.

[0020] Secondly, the gas in the air inlet path is diverted by the diverter groove, adjusted into a planar state through multiple wide gas grooves and impurities are filtered out, and then sprayed out from the air outlet grooves of the upper and lower jet sheets, forming a vortex of gas around the glue outlet groove to atomize the glue liquid. Compared with the traditional 2-hole nozzle, the atomization effect is more uniform and the fineness is higher.

[0021] Furthermore, the adjacent sheets are tightly fitted and sealed to ensure the stable flow of glue and gas in their respective channels, prevent leakage, maintain internal pressure stability, improve energy utilization efficiency, avoid the intrusion of external impurities, protect internal precision components, and extend the service life of the spray gun.

[0022] In addition, this design overcomes the limitations of traditional nozzles. The left and right air paths of traditional nozzles limit the number of glue lines, which is not conducive to the application of porous arrays. It is impossible to spray and compound low-weight or thin materials with high density and is prone to bulging. When the amount of glue is large, glue will overflow on the back. This patent effectively solves these problems and can better adapt to different glue spraying needs and materials, providing an efficient and reliable spraying solution for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic structural diagram of the spray-coated sheet of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the upper jet blade of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the film feeding method of the present invention.

[0027] Figure 4 It is a schematic structural diagram of the first wide film of the present invention.

[0028] Figure 5 It is a schematic structural diagram of the rubber filter of the present invention.

[0029] Figure 6 It is a schematic structural diagram of the second wide film of the present invention.

[0030] Figure 7 It is a schematic structural diagram of the third wide film of the present invention.

[0031] Figure 8 It is a schematic structural diagram of the upper clip of the present invention.

[0032] Fig. 9 It is a schematic structural diagram of the lower air jet blade of the present invention.

[0033] Fig.10 It is a schematic structural diagram of the first wide air sheet of the present invention.

[0034] Fig.11 It is a schematic structural diagram of the air filter of the present invention.

[0035] Fig.12 It is a schematic structural diagram of the second wide air sheet of the present invention.

[0036] Fig.13 It is a schematic diagram of the structure of the gas diverter sheet of the present invention.

[0037] Fig.14 It is a schematic structural diagram of the lower clip of the present invention.

[0038] Fig.15 It is a structural schematic diagram of the front side of the nozzle of the present invention.

[0039] Fig.16 It is a structural schematic diagram of the spray gun of the present invention.

[0040] Description of the reference numerals in the accompanying drawings: glue spraying sheet 1, glue outlet slot 11, upper jet sheet 2, lower jet sheet 3, air outlet slot 4, glue inlet hole 1 21, glue inlet sheet 5, glue inlet hole 2 51, first wide film 6, wide glue slot 1 61, glue filter sheet 7, glue filter hole 71, second wide film 8, wide glue slot 2 81, third wide film 9, wide glue slot 3 91, upper clamping sheet 10, glue inlet 101, air inlet 102, first wide air sheet 901, wide air slot 1 9011, air Filter plate 902, air filter hole 9021, second wide air plate 903, second wide air groove 9031, gas diversion plate 904, gas diversion groove 9041, lower clamp 905, air inlet hole 906, fixing hole 907, positioning hole 908, protrusion one 111, protrusion two 112, gun body 100, glue inlet channel 1001, air inlet channel 1002, filter assembly 1003, opening and closing assembly 1004, connecting air hole 12, nozzle 300. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] For reference Figure 1-Figure 16 The present invention is described: Embodiment: A melt-blown fiber nozzle, comprising The glue spraying sheet 1 is provided with a glue outlet groove 11, which is arranged along the front-back direction. The glue outlet groove 11 runs through the upper and lower sides and the front side of the glue spraying sheet 1 in the thickness direction. There are multiple glue outlet grooves 11 and they are arranged at intervals in the left-right direction.

[0043] An upper jet sheet 2 and a lower jet sheet 3 are respectively provided on the upper and lower sides of the glue spraying sheet 1. An air outlet groove 4 corresponding to the glue outlet groove 11 is respectively provided on the upper jet sheet 2 and the lower jet sheet 3. The air outlet groove 4 is arranged along the front-to-back direction. The air outlet groove 4 runs through the upper and lower sides and the front side of the thickness direction of the upper jet sheet 2 or the lower jet sheet 3. One glue outlet groove 11 is correspondingly provided with two air outlet grooves 4. The glue outlet groove 11 is located between the corresponding two air outlet grooves 4. The glue spraying sheet 1 is provided with a connecting air hole 12 corresponding to the rear end of the air outlet groove 4. The connecting air hole 12 is used to connect the air outlet grooves 4 on the upper jet sheet 2 and the lower jet sheet 3. The upper jet sheet 2 is provided with a glue inlet hole 21 corresponding to the rear end of the glue outlet groove 11.

[0044] A film feeding sheet 5 is provided on the upper side of the upper jet sheet 2 , and a second glue feeding hole 51 corresponding to the first glue feeding hole 21 is provided on the film feeding sheet 5 .

[0045] A first wide film 6 is provided on the upper side of the film feed sheet 5, and a wide glue groove 61 is provided on the first wide film 6. The wide glue groove 61 runs through the upper and lower sides of the first wide film 6, and the second glue feed holes 51 on the upper jet sheet 2 are connected to the wide glue groove 61.

[0046] A rubber filter sheet 7 is disposed on the upper side of the first wide rubber sheet 6 , and a plurality of rubber filter holes 71 are distributed on the rubber filter sheet 7 in the area corresponding to the wide rubber groove 1 61 . The rubber filter holes 71 are disposed through the upper and lower sides of the rubber filter sheet 7 .

[0047] A second wide film 8 is disposed on the upper side of the rubber filter 7 , and a second wide rubber groove 81 corresponding to the first wide rubber groove 61 is disposed on the second wide film 8 , and the second wide rubber groove 81 runs through the upper and lower sides of the second wide film 8 .

[0048] A third wide film 9 is disposed on the upper side of the second wide film 8 . A third wide glue groove 91 corresponding to and connected to the second wide glue groove 81 is disposed on the third wide film 9 . The third wide glue groove 91 runs through the upper and lower sides of the third wide film 9 .

[0049] An upper clamping piece 10 is disposed on the upper side of the third wide film 9 , and a glue inlet 101 corresponding to and communicating with the third wide glue groove 91 is disposed on the upper clamping piece 10 .

[0050] A first wide air sheet 901 is provided on the lower side of the lower jet sheet 3, and a wide air groove 9011 is provided on the first wide air sheet 901. The wide air groove 9011 runs through the upper and lower sides of the first wide air sheet 901, and the rear end of the air inlet groove on the lower jet sheet 3 is connected to the wide air groove 9011.

[0051] An air filter 902 is provided at the lower side of the first wide air sheet 901 . A plurality of air filter holes 9021 are distributed on the air filter 902 in the area corresponding to the wide air slot 1 9011 . The air filter holes 9021 are arranged through the upper and lower sides of the air filter 902 .

[0052] A second wide air sheet 903 is provided at the lower side of the air filter sheet 902 . A second wide air slot 9031 corresponding to the first wide air slot 9011 is provided on the second wide air sheet 903 . The second wide air slot 9031 runs through the upper and lower sides of the second wide air sheet 903 .

[0053] A gas diverter plate 904 is provided at the lower side of the second wide gas plate 903 . A gas diverter groove 9041 corresponding to and connected to the second wide gas groove 9031 is provided on the gas diverter plate 904 . The gas diverter groove 9041 runs through the upper and lower sides of the gas diverter plate 904 .

[0054] A lower clamping piece 905 is provided on the lower side of the gas splitter piece 904 .

[0055] It also includes an air inlet 906 that penetrates the second wide air sheet 903, the air filter sheet 902, the first wide air sheet 901, the lower jet sheet 3, the glue spray sheet 1, the upper jet sheet 2, the film feed sheet 5, the first wide film sheet 6, the glue filter sheet 7, the second wide film sheet 8, and the third wide film sheet 9. The upper clamping sheet 10 is provided with an air inlet 102 that is connected to the air inlet 906, and the air inlet 906 is connected to the gas diversion groove 9041.

[0056] Detailed analysis of the glue feeding path: Glue inlet: The glue enters the nozzle system from the glue inlet 101 on the upper clamp 10. This glue inlet 101 is the starting point for the glue to enter the entire device, and its position and size are reasonably designed to ensure that the glue can flow in smoothly.

[0057] The wide glue groove 3 91 adjusts the glue state: enters the wide glue groove 3 91 on the third wide film 9. The function of the wide glue groove 3 91 is to adjust the glue into a flat state. This step is very important because the glue in a flat state is easier to be evenly distributed and processed in the subsequent process. For example, when the glue enters the wide glue groove 3 91 with a certain pressure, the shape and size of the groove will cause the glue to spread in the width direction to form a relatively uniform plane.

[0058] The second wide glue groove 81 further adjusts the glue state: Then, the glue enters the second wide glue groove 81 on the second wide film 8. The second wide glue groove 81 can also further adjust the glue feeding into a flat state. Working together with the third wide glue groove 91, the glue is distributed more evenly. It can be imagined that without the gradual adjustment of these two wide glue grooves, the glue may accumulate locally or flow unevenly, thereby affecting the subsequent filtering and spraying effects.

[0059] The glue filter holes 71 filter large particles: The glue liquid then enters the glue filter holes 71 on the glue filter sheet 7. These glue filter holes 71 can filter out large particles in the colloid. In practical applications, some impurities or large particles may be mixed into the glue liquid. If not filtered, these impurities may clog the nozzle or affect the atomization effect. The distribution and size of the glue filter holes 71 are carefully designed to effectively filter out most of the large particles without causing excessive resistance to the flow of the glue liquid.

[0060] The wide glue slot 61 adjusts the glue liquid state again: the filtered glue liquid enters the wide glue slot 61 on the first wide film 6. The wide glue slot 61 can further adjust the glue feeding into a flat state. Through multiple wide glue slot adjustments, the flat state of the glue liquid is more stable and uniform, preparing for subsequent multi-point glue feeding.

[0061] Preparation for glue injection at multiple locations: The glue enters the glue injection hole 2 51 on the glue injection sheet 5. Multiple glue injection holes 2 51 are used for glue injection at multiple locations. Such a design can increase the injection area and uniformity of the glue. For example, when the glue enters from multiple glue injection holes 2 51 at the same time, the problem of excessive or uneven local pressure that may be caused by single-point glue injection can be avoided to a certain extent.

[0062] The glue is fed into the glue injection hole 21 on the upper jet sheet 2 at multiple points: Then, the glue enters the glue injection hole 21 on the upper jet sheet 2. Similarly, multiple glue injection holes 21 also form glue injection at multiple points. This step further strengthens the effect of multi-point glue injection, so that the glue can be more evenly distributed at the glue outlet slot 11 on the glue injection sheet 1.

[0063] Glue liquid spraying: Finally, the glue liquid enters the glue outlet groove 11 on the glue spraying sheet 1 and is sprayed out from the glue outlet groove 11. Due to the adjustment and processing of the previous multiple links, the glue liquid can be sprayed out in a uniform state at the glue outlet groove 11, which provides a good foundation for the subsequent atomization process.

[0064] Detailed analysis of the intake path: Gas inlet: Gas enters the nozzle system from the gas inlet 102 on the upper clamp 10. The position and size of this gas inlet 102 are reasonably designed to ensure that the gas enters the device at an appropriate speed and pressure.

[0065] The air inlet 906 diverts the gas into the air inlet 906. The air inlet 906 runs through multiple components and plays a role in connecting and guiding the flow of gas.

[0066] The gas diversion groove 9041 diverts the compressed air: it enters the gas diversion groove 9041 on the gas diversion plate 904. The compressed air can be more evenly distributed to the subsequent components after being diverted by the n-shaped gas diversion groove 9041. This diversion design can make the gas spray out at different positions with appropriate flow and pressure, so as to better atomize the glue liquid.

[0067] The wide gas groove 9031 adjusts the air intake state: enters the wide gas groove 9031 on the second wide gas sheet 903. The wide gas groove 9031 can adjust the air intake to a flat state. Similar to the wide glue groove in the glue feeding path, the wide gas groove 9031 can make the gas evenly distributed in the width direction, preparing for subsequent filtering and injection.

[0068] The air filter hole 9021 filters foreign particles: enters the air filter hole 9021 on the air filter sheet 902. The air filter hole 9021 can filter foreign particles in the air to prevent these impurities from entering the nozzle system, affecting the atomization effect or clogging the nozzle. The design of the air filter hole 9021 is similar to the rubber filter hole 71, which must ensure the filtering effect while not causing excessive resistance to the flow of gas.

[0069] The wide gas slot 9011 adjusts the air intake state again: the filtered gas enters the wide gas slot 9011 on the first wide gas sheet 901. The wide gas slot 9011 can further adjust the air intake into a planar state. Through multiple wide gas slot adjustments, the planar state of the gas is more stable and uniform, providing better conditions for subsequent injection.

[0070] Entering the lower jet sheet 3: The gas enters the gas outlet slot 4 on the lower jet sheet 3. The gas outlet slot 4 on the lower jet sheet 3 is connected to the communicating air hole 12 on the glue spraying sheet 1, providing a channel for the gas to enter the glue spraying sheet 1.

[0071] The communicating air hole 12 connects the upper and lower jet sheets 3: the communicating air hole 12 on the glue spraying sheet 1 is entered. The communicating air hole 12 serves to connect the air outlet grooves 4 on the upper jet sheet 2 and the lower jet sheet 3, so that the gas can flow between the upper and lower jet sheets 3.

[0072] Enter the upper jet sheet 2: enter the air outlet groove 4 on the upper jet sheet 2.

[0073] The gas is ejected to form a vortex-shaped atomized glue liquid: Finally, the gas is ejected from a total of four gas outlet slots 4 on the lower jet plate 3 and the upper jet plate 2. These four gas outlet slots 4 are distributed around a glue outlet slot 11 and the air can form a vortex-shaped gas to atomize the glue liquid. Compared with the traditional 2-hole nozzle, this design can provide more gas flow and more uniform gas distribution, thereby achieving a better atomization effect.

[0074] It also includes a fixing hole 907 that penetrates the lower clamping piece 905, the gas diverter piece 904, the second wide gas piece 903, the gas filter piece 902, the first wide gas piece 901, the lower air jet piece 3, the glue jet piece 1, the upper air jet piece 2, the film feed piece 5, the first wide film piece 6, the glue filter piece 7, the second wide film piece 8, the third wide film piece 9, and the upper clamping piece 10. Bolts are connected in the fixing holes 907 for fixed connection.

[0075] The main function of the fixing hole 907 is to realize the fixed connection of each component through the connecting bolt. During the operation of the nozzle, the flow of glue and gas will generate a certain pressure and impact force. If there is no firm connection between the components, they may become loose, displaced or even separated, which will seriously affect the normal operation and atomization effect of the nozzle.

[0076] Through bolt connection, the fixing holes 907 can make the various components closely combined together to form a stable overall structure. This stability is very important for ensuring the working accuracy and reliability of the nozzle.

[0077] The design of the fixing hole 907 makes the installation and removal of the nozzle more convenient. During installation, you only need to insert the bolt into the fixing hole 907 and tighten it to achieve the fixed connection of each component. During maintenance, you can easily separate the components by removing the bolts for cleaning, repair or replacement.

[0078] Bolted connections can form a good seal between the various components to prevent glue and gas leakage. During the working process of the nozzle, if leakage occurs, it will not only affect the atomization effect, but also may pollute the working environment and even cause safety problems.

[0079] It also includes a positioning hole 908 that penetrates the lower clamping piece 905, the gas diverter piece 904, the second wide air piece 903, the air filter piece 902, the first wide air piece 901, the lower air jet piece 3, the glue spray piece 1, the upper air jet piece 2, the film feed piece 5, the first wide film 6, the glue filter piece 7, the second wide film 8, the third wide film 9, and the upper clamping piece 10. The positioning hole 908 is connected with a positioning column to assist the connection of each component. The positioning hole 908 provides an accurate positioning reference for the connection of each component by connecting the positioning column. In the assembly process of the nozzle, since it involves the combination of multiple components, if there is no accurate positioning, it is easy to have problems such as component misalignment and offset, thereby affecting the performance and working effect of the nozzle. With the assistance of the positioning hole 908 and the positioning column, the assembler can quickly and accurately position and connect each component, greatly improving the assembly efficiency. Compared with assembly based on manual experience, the existence of the positioning hole 908 reduces the uncertainty and error rate in the assembly process. The cooperation between the positioning hole 908 and the positioning column enhances the connection stability between the various components of the nozzle to a certain extent. In addition to the fixing hole 907 providing the main fixing force through the bolt connection, the auxiliary connection between the positioning hole 908 and the positioning column can prevent the components from relative rotation or displacement when subjected to external forces.

[0080] The air outlets of the two air outlet grooves 4 on the upper air jet sheet 2 and the lower air jet sheet 3 corresponding to the glue outlet grooves 11 will converge toward the middle and converge with the glue outlet at the front side of the corresponding glue outlet grooves 11 .

[0081] When the gas is ejected from the gas outlet slot 4, the airflow converging toward the middle can better interact with the glue liquid ejected from the glue outlet slot 11. This design enables the gas to impact the glue liquid with greater pressure and speed, thereby breaking the glue liquid into smaller particles and improving the atomization effect.

[0082] The symmetrical design of the two gas outlet grooves 4 enables the gas to act evenly on the glue liquid on both sides of the glue outlet groove 11. This uniform air flow distribution helps to ensure that the glue liquid is evenly atomized during the spraying process, avoiding the situation of poor local atomization.

[0083] The gas from the gas outlet groove 4 converges toward the middle and converges with the glue at the front side of the glue outlet groove 11, so that the gas and glue can be fully mixed in a relatively small space. This mixing process can make the glue absorb the energy of the gas better, thereby improving the atomization effect.

[0084] The shape, size and position of the air outlet slot 4 are carefully designed to achieve accurate control of the airflow. By adjusting the angle and width of the air outlet slot 4, the speed and direction of the airflow can be controlled to better interact with the glue.

[0085] The positional correspondence between the gas outlet slot 4 and the glue outlet slot 11 is optimized so that the gas and glue liquid can converge at the best position and time. This synergy can improve the atomization effect and also reduce energy waste.

[0086] The design of the outlet gases of the two air outlet grooves 4 corresponding to the glue outlet groove 11 on the upper jet sheet 2 and the lower jet sheet 3 converging toward the middle and converging with the glue at the front side of the glue outlet groove 11 has the advantages of enhancing the atomization effect, improving the uniformity of atomization, and optimizing the mixing of airflow and glue liquid.

[0087] The left and right sides of the front end of the glue outlet groove 11 are respectively provided with a protrusion 111 protruding forward, and the front sides of the upper jet plate 2 and the lower jet plate 3 are respectively provided with a plurality of protrusions 112 protruding forward. The protrusions 112 are arranged corresponding to the glue outlet groove 11, and the protrusions 112 are located between the two protrusions 111. The corresponding two protrusions 111 and the two protrusions 112 form a glue outlet nozzle.

[0088] The two corresponding protrusions 111 and the two corresponding protrusions 112 form a glue nozzle. The design of the glue nozzle has an important influence on the glue liquid spraying method and atomization effect. The glue nozzle can concentrate the outflow direction of the glue liquid, so that the glue liquid is sprayed in a more concentrated and stable manner, thereby improving the precision and uniformity of atomization.

[0089] The positions and shapes of the first protrusion 111 and the second protrusion 112 can guide the flow direction of the glue liquid, prevent the glue liquid from being dispersed or flowing irregularly during the spraying process, and ensure that the glue liquid is sprayed along a predetermined path.

[0090] The structure of the glue nozzle can make the glue liquid interact better with the surrounding gas when it is sprayed, thereby enhancing the atomization effect. When the glue liquid is sprayed from the glue nozzle, the surrounding gas can impact the glue liquid more concentratedly, breaking it into smaller particles, and improving the fineness and uniformity of the atomization.

[0091] The protrusion 111 at the front end of the glue outlet groove 11 and the protrusions 112 on the upper jet sheet 2 and the lower jet sheet 3 together form a glue outlet nozzle, which plays an important role in the melt-blown fiber nozzle. It can control the flow direction of the glue liquid, enhance the atomization effect, and improve the performance and reliability of the nozzle.

[0092] The thickness of the glue spraying sheet 1, the upper jet sheet 2, and the lower jet sheet 3 is 0.25 mm. This helps to make the entire nozzle structure more compact while ensuring functionality. In actual application scenarios, nozzles are often required to be small and flexible so that they can be installed on different equipment or adapt to some working environments with limited space. The thinner thickness can effectively reduce the space occupied by the entire device, improve space utilization, and also facilitate the layout optimization of the entire spray gun system.

[0093] This thickness also has a positive impact on heat transfer properties. In the meltblown fiber process, the temperature of the glue and gas may affect the atomization and subsequent fiber forming. The thinner thickness allows these components to achieve faster heat conduction and balance during operation, avoiding local overheating or excessive temperature differences that affect the fluidity and atomization of the glue.

[0094] For example, when hot glue passes through the glue spraying sheet 1, if the glue spraying sheet 1 is too thick, the heat dissipation is uneven, which may cause the viscosity of the glue to change locally, thereby affecting the uniformity of the glue spraying from the glue outlet groove 11. A thickness of 0.25 mm can better avoid such problems.

[0095] The thickness of 0.25 mm is conducive to the smooth flow of gas and glue on the surface and internal channels of these components. The thinner sheet can reduce the resistance of gas and glue flow, so that the gas can reach the gas outlet groove 4 more quickly and evenly, and the glue can be sprayed out from the glue outlet groove 11 more smoothly, which helps to achieve a good atomization effect and efficient mixing of glue and gas.

[0096] Imagine that if these components are too thick, the gas may generate turbulence due to additional resistance when passing through the gas outlet slot 4, and the flow of the glue may become unstable, which is not conducive to the synergistic effect of the two in the subsequent atomization process. The appropriate thickness can ensure smooth flow.

[0097] The thickness of the gas diverter sheet 904, the second wide gas sheet 903, the gas filter sheet 902, the first wide gas sheet 901, the film feed sheet 5, the first wide film sheet 6, the film filter sheet 7, the second wide film sheet 8 and the third wide film sheet 9 is 0.3 mm.

[0098] Compared with the 0.25mm thick parts such as the spray film 1, these 0.3mm thick parts have improved strength. During the long-term operation of the nozzle, it has to withstand multiple forces such as gas pressure, flow impact of glue liquid and possible external vibration. The 0.3mm thickness can make them have better anti-deformation ability, reduce the possibility of damage and deformation due to external forces, thereby extending the service life of the entire nozzle and improving its durability and reliability.

[0099] The 0.3mm thickness of these components is also the result of cooperation and coordination with other components of the entire nozzle. From the perspective of flow continuity of glue and gas, this thickness can ensure that when connecting and working with adjacent components, the transition of glue and gas is natural and smooth, and there will be no problems such as loose connection and flow turbulence due to excessive thickness differences, ensuring the efficient and stable operation of the entire glue and gas inlet path and the atomization process.

[0100] The gas diversion groove 9041 is n-shaped, and the two ends of the gas diversion groove 9041 are respectively connected to the wide gas groove 2 9031, and the middle of the gas diversion groove 9041 is connected to the air inlet 906. The n-shaped gas diversion groove 9041 can evenly and effectively divert the gas entering from the air inlet 906. Its shape characteristics make the gas divert along different branches of the groove after entering the groove, avoiding the situation where the gas flows out from a certain place and causes uneven subsequent air intake.

[0101] For example, if a simple straight or other asymmetric shaped flow slot is used, the gas may flow toward one end, causing the flow rate and pressure of the gas flowing into the wide gas slot 9031 to be inconsistent at different positions, thereby affecting the atomization uniformity when mixed with the glue liquid. The n-shaped structure can evenly distribute the gas to both ends through a reasonable branch layout, ensuring the balance of subsequent air intake in each part.

[0102] The tortuous path of the gas plays a buffering role when the gas flows through the n-shaped gas diversion groove 9041. Compared with a short straight channel that is directly connected, this structure with bends and turns can slow down the flow rate of the gas and make it flow more smoothly.

[0103] Both ends of the gas diversion groove 9041 are connected to the wide gas groove 9031 respectively. This design ensures that the gas can fully and evenly enter the wide gas groove 9031. Through this double-sided connection, the gas can fill the wide gas groove 9031 from two directions at the same time, making the gas distribution in the wide gas groove 9031 more even.

[0104] The middle of the gas diversion groove 9041 is connected to the air inlet 906, which is the key connection point of the entire air intake system. The air inlet 906 serves as a passage for external gas to enter the nozzle, and through the connection with the gas diversion groove 9041, a stable gas source is provided for gas diversion.

[0105] This connection mode can make the gas inputted from the air inlet 906 flow into the gas diversion groove 9041 in an orderly manner, and then enter the wide gas groove 2 9031 according to the designed diversion path. Moreover, since the air inlet 906 is usually connected to an external gas source supply device, ensuring good connection between it and the gas diversion groove 9041 can ensure that the entire air intake link will not have problems such as flow interruption or insufficient air intake, maintain the continuity and stability of the nozzle air intake, and thus ensure that the atomization process can be carried out uninterruptedly and efficiently.

[0106] The lower clamping piece 905, the gas diverter piece 904, the second wide gas piece 903, the gas filter piece 902, the first wide gas piece 901, the lower air jet piece 3, the glue spray piece 1, the upper air jet piece 2, the film feed piece 5, the first wide film piece 6, the glue filter piece 7, the second wide film piece 8, the third wide film piece 9 and the upper clamping piece 10 are stacked in sequence from bottom to top, and the adjacent pieces fit each other and seal. Many components are stacked in sequence and fit each other and seal to build a tight overall structure. This structure prevents relative displacement or looseness between the individual pieces, thereby enhancing the structural stability of the entire spray gun during operation.

[0107] As for the glue feeding path, starting from the glue liquid entering the upper clamping plate 10, it passes through the third wide film 9, the second wide film 8, the glue filter 7 and other components in sequence, until it is finally sprayed out from the glue outlet groove 11 of the glue spraying plate 1. The sealing cooperation between adjacent plates ensures that the glue liquid can only flow along the predetermined internal channel, will not leak to other parts, and will not be mixed with external impurities.

[0108] Similarly, on the air intake path, after the gas enters from the air inlet 102, it passes through the air inlet hole 906, flows through the gas diversion plate 904, each wide air plate, the air filter plate 902 and the upper and lower jet plates 3, etc. The sealed adjacent plate structure can prevent gas leakage or mixing into the glue liquid channel, ensuring that the gas reaches the air outlet groove 4 according to the designed route and is accurately mixed and atomized with the glue liquid.

[0109] In this meltblown fiber spray gun, the colloid is in the middle position and is surrounded by air. The gas can form a vortex to atomize the glue. This unique atomization method brings significant advantages. The vortex-shaped airflow can produce a uniform and strong impact force on the colloid from multiple directions, breaking the glue into finer and more uniform particles, which greatly improves the atomization effect compared to traditional atomization methods. For example, in some process applications that require high glue atomization fineness, such as fine electronic component packaging, high-quality fabric coating, etc., this vortex-shaped atomization can make the glue better adhere to the surface of the target object, forming a smooth, uniform and firm glue layer, improving the quality and performance of the product.

[0110] Compared with the traditional 2-hole nozzle, its atomization effect is better. The traditional 2-hole nozzle has a relatively single air outlet method, and the airflow generated does not have a comprehensive and uniform effect on the glue liquid, resulting in uneven particle sizes after the glue liquid is atomized, and the atomization uniformity is poor. However, this melt-blown fiber spray gun uses the surrounding air to form a vortex to act on the glue liquid, so that the glue liquid can be impacted by the appropriate airflow at all angles, and the atomized particles are more uniform and delicate, which can better meet the diversified and high-precision process requirements in modern industrial production.

[0111] Traditional nozzles use a left-right air path design, and this structure greatly limits the number of glue lines. In actual industrial spraying and compounding applications, it is often necessary to implement a multi-hole array spraying mode to meet the needs of large-area, high-density spraying. However, the air path layout of traditional nozzles makes it difficult to effectively support multiple glue lines to spray glue and atomize evenly at the same time, which limits production efficiency and process flexibility, and cannot adapt well to some operations that require high spray density and coverage, such as large-scale sheet compounding, coil coating and other production processes.

[0112] When spraying and laminating low-weight or thin materials, traditional nozzles cannot achieve high-density spray lamination, which will cause bulging of the composite materials. This is because the density of the spray glue is not enough, and the glue cannot evenly and fully fill the gaps between the materials. In the subsequent processing or use process, due to the influence of factors such as air, bulging is easy to form, which seriously affects the appearance and quality of the product, making it difficult to guarantee the processing quality of such materials.

[0113] When the amount of glue is large, traditional nozzles are prone to glue overflow from the back of the material. Due to the limited atomization effect and uniformity of glue spraying, when the amount of glue increases, the glue cannot be effectively dispersed and atomized, and the excess glue will overflow from the back of the material, which not only causes waste of glue, but also may pollute production equipment and working environment, and also affect the final quality of the product, increasing the cost of subsequent cleaning and processing.

[0114] A meltblown fiber spray gun includes a gun body 100 , in which a glue feed channel 1001 and an air inlet channel 1002 are provided. The nozzle 300 is installed on the gun body 100 , the glue feed channel 1001 is connected to the glue feed port 101 , and the air inlet channel 1002 is connected to the air inlet port 102 .

[0115] A filter component 1003 capable of filtering glue is provided in the glue inlet channel 1001, and an opening and closing component 1004 capable of opening and closing the glue inlet is provided in the glue inlet channel 1001.

[0116] The filter component in the glue inlet channel plays a key role. It can filter the glue liquid, remove impurities and particles in it, and prevent these impurities from entering the nozzle and affecting the atomization effect or clogging the nozzle.

[0117] For example, in practical applications, if the glue contains impurities, the glue outlet slot 11 of the nozzle may be blocked, affecting the normal spraying of the glue. The filter assembly can effectively intercept these impurities to ensure the purity of the glue.

[0118] The opening and closing components can control the opening and closing of the glue feeding. This is very important in actual operation, as the supply of glue can be controlled at any time according to needs.

[0119] For example, when the spray gun is not working, closing the glue feed can avoid waste and leakage of glue. During the working process, the flow rate and speed of glue feed can be adjusted as needed to meet different atomization requirements.

[0120] The air inlet channel is responsible for delivering the gas to the nozzle. The gas is mixed with the glue liquid in the nozzle to achieve the atomization effect. The design of the air inlet channel needs to consider the flow rate, pressure and stability of the gas to ensure a good atomization effect.

[0121] The nozzle is mounted on the gun body, the glue inlet channel is connected to the glue inlet 101, and the air inlet channel is connected to the air inlet 102. This connection mode enables the glue liquid and gas in the gun body to be smoothly transported to the nozzle, so that the normal operation of the spray gun is realized.

[0122] The nozzle plays a core role in the spray gun. It mixes and atomizes the glue and gas through carefully designed glue inlet and air inlet paths to produce fine glue particles to meet different application requirements.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A meltblown fiber nozzle, characterized in that: include A glue spraying sheet (1), wherein the glue spraying sheet (1) is provided with a glue outlet groove, the glue outlet groove (11) is arranged along the front-back direction, the glue outlet groove (11) penetrates the upper and lower sides and the front side of the glue spraying sheet (1) in the thickness direction, and a plurality of glue outlet grooves (11) are provided and are arranged at intervals in the left-right direction; The upper and lower sides of the spray glue sheet (1) are respectively provided with an upper jet sheet (2) and a lower jet sheet (3), and the upper and lower jet sheets (2) and the lower jet sheets (3) are respectively provided with air outlet grooves (4) corresponding to the glue outlet grooves (11), and the air outlet grooves (4) are arranged along the front-to-back direction, and the air outlet grooves (4) penetrate the upper and lower sides and the front side of the thickness direction of the upper jet sheet (2) or the lower jet sheet (3), and one glue outlet groove (11) is correspondingly provided with two air outlet grooves (4), and the glue outlet groove (11) is located between the two corresponding air outlet grooves (4), and the spray glue sheet (1) is provided with a communicating air hole (12) corresponding to the rear end of the air outlet groove (4), and the upper jet sheet (2) is provided with a glue inlet hole (21) corresponding to the rear end of the glue outlet groove (11); A film feed sheet (5) is provided on the upper side of the upper jet sheet (2), and a second glue feed hole (51) corresponding to the first glue feed hole (21) is provided on the film feed sheet (5); A first wide film (6) is provided on the upper side of the film feed sheet (5), a wide glue groove (61) is provided on the first wide film (6), the wide glue groove (61) runs through the upper and lower sides of the first wide film (6), and the second glue feed hole (51) on the upper jet sheet (2) is connected to the wide glue groove (61); A rubber filter (7) is provided on the upper side of the first wide rubber sheet (6), and a plurality of rubber filter holes (71) are distributed in the area of ​​the rubber filter (7) corresponding to the wide rubber groove 1 (61), and the rubber filter holes (71) are arranged through the upper and lower sides of the rubber filter (7); A second wide film (8) is provided on the upper side of the rubber filter (7), and a second wide rubber groove (81) corresponding to the first wide rubber groove (61) is provided on the second wide film (8), and the second wide rubber groove (81) runs through the upper and lower sides of the second wide film (8); A third wide film (9) is provided on the upper side of the second wide film (8), and a third wide glue groove (91) corresponding to and connected to the second wide glue groove (81) is provided on the third wide film (9), and the third wide glue groove (91) runs through the upper and lower sides of the third wide film (9); An upper clamping plate (10) is provided on the upper side of the third wide film (9), and a wide glue groove (91) and a correspondingly connected glue inlet (101) are provided on the upper clamping plate (10); A first wide air sheet (901) is provided on the lower side of the lower air jet sheet (3), a wide air groove (9011) is provided on the first wide air sheet (901), the wide air groove (9011) runs through the upper and lower sides of the first wide air sheet (901), and the rear end of the air inlet groove on the lower air jet sheet (3) is connected to the wide air groove (9011); An air filter (902) is provided on the lower side of the first wide air sheet (901); a plurality of air filter holes (9021) are distributed on the air filter (902) in an area corresponding to the wide air slot 1 (9011); the air filter holes (9021) are arranged through the upper and lower sides of the air filter (902); A second wide air sheet (903) is provided on the lower side of the air filter sheet (902), and a second wide air slot (9031) corresponding to the first wide air slot (9011) is provided on the second wide air sheet (903), and the second wide air slot (9031) runs through the upper and lower sides of the second wide air sheet (903); A gas diversion sheet (904) is provided on the lower side of the second wide gas sheet (903), and a gas diversion groove (9041) corresponding to and connected to the second wide gas groove (9031) is provided on the gas diversion sheet (904), and the gas diversion groove (9041) runs through the upper and lower sides of the gas diversion sheet (904); A lower clamping piece (905) is provided on the lower side of the gas diverter piece (904); It also includes an air inlet (906) that penetrates the second wide air sheet (903), the air filter sheet (902), the first wide air sheet (901), the lower air jet sheet (3), the glue spray sheet (1), the upper air jet sheet (2), the glue feed sheet (5), the first wide glue sheet (6), the glue filter sheet (7), the second wide glue sheet (8), and the third wide glue sheet (9); an air inlet (102) that is in communication with the air inlet (906) is provided on the upper clamping sheet (10); and the air inlet (906) is in communication with the gas diversion groove (9041).

2. A meltblown fiber nozzle according to claim 1, characterized in that: It also includes a fixing hole (907) that penetrates a lower clamping piece (905), a gas diverter piece (904), a second wide gas piece (903), a gas filter piece (902), a first wide gas piece (901), a lower air jet piece (3), a glue spray piece (1), an upper air jet piece (2), a film feed piece (5), a first wide film piece (6), a glue filter piece (7), a second wide film piece (8), a third wide film piece (9), and an upper clamping piece (10).

3. A meltblown fiber nozzle according to claim 1, characterized in that: It also includes a positioning hole (908) that penetrates the lower clamping piece (905), the gas diverter piece (904), the second wide gas piece (903), the gas filter piece (902), the first wide gas piece (901), the lower air jet piece (3), the glue spray piece (1), the upper air jet piece (2), the film feed piece (5), the first wide film piece (6), the glue filter piece (7), the second wide film piece (8), the third wide film piece (9), and the upper clamping piece (10).

4. A meltblown fiber nozzle according to claim 1, characterized in that: The air outlets of the two air outlet grooves (4) on the upper air jet sheet (2) and the lower air jet sheet (3) corresponding to the glue outlet groove (11) converge toward the middle and converge with the glue outlet at the front side of the corresponding glue outlet groove (11).

5. A meltblown fiber nozzle according to claim 1, characterized in that: The left and right sides of the front end of the glue outlet groove (11) are respectively provided with a protrusion one (111) protruding forward, and the front sides of the upper jet plate (2) and the lower jet plate (3) are respectively provided with a plurality of protrusions two (112) protruding forward, the protrusions two (112) are arranged corresponding to the glue outlet groove (11), the protrusion two (112) is located between the two protrusions one (111), and the corresponding two protrusions one (111) and the two protrusions two (112) form a glue outlet nozzle.

6. A meltblown fiber nozzle according to claim 1, characterized in that: The thickness of the glue spraying sheet (1), the upper air spraying sheet (2), and the lower air spraying sheet (3) is 0.25 mm.

7. A meltblown fiber nozzle according to claim 1, characterized in that: The thickness of the gas diverter sheet (904), the second wide gas sheet (903), the gas filter sheet (902), the first wide gas sheet (901), the film feed sheet (5), the first wide film sheet (6), the film filter sheet (7), the second wide film sheet (8), and the third wide film sheet (9) is 0.3 mm.

8. A meltblown fiber nozzle according to claim 1, characterized in that: The gas diversion groove (9041) is n-shaped, and both ends of the gas diversion groove (9041) are respectively connected to the second wide gas groove (9031), and the middle of the gas diversion groove (9041) is connected to the air inlet (906).

9. A meltblown fiber spray gun, comprising a gun body (100), wherein the gun body (100) is provided with a glue inlet channel (1001) and an air inlet channel (1002), characterized in that: The nozzle according to any one of claims 1 to 8 is mounted on the gun body (100), the glue feed channel (1001) is connected to the glue feed port (101), and the air intake channel (1002) is connected to the air intake port (102).

10. A melt-blown fiber spray gun according to claim 9, characterized in that: The glue inlet channel (1001) is provided with a filtering component (1003) capable of filtering glue, and the glue inlet channel (1001) is provided with an opening and closing component (1004) capable of opening and closing the glue inlet.

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