Solder mask printing spray gun protective cover
By designing a protective cover for the anti-welding printing spray gun, the problems of non-adjustable spraying range and high difficulty in paint cleaning were solved, enabling flexible adjustment of the spraying range and automatic paint collection, thus improving spraying quality and efficiency.
Patent Information
- Application Number
- CN202422566397.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-23
AI Technical Summary
Existing solder resist printing and spraying technologies have problems such as the inability to adjust the spraying range, high difficulty in cleaning the coating, and excess coating contaminating the circuit board.
A protective cover for a solder resist printing spray gun was designed, including a cover body, an adjustment mechanism, and a material collection mechanism. The cover body is fixed to the spray gun by the adjustment mechanism to limit the spraying range, and the material collection mechanism automatically collects excess paint to avoid contaminating the circuit board.
It enables flexible adjustment of the spraying range, reduces the difficulty and frequency of paint cleaning, prevents excess paint contamination, and improves spraying quality and efficiency.
Smart Images
Figure CN223543202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of circuit board spraying auxiliary devices, specifically, it is a protective cover for a solder resist printing spray gun. Background Technology
[0002] In the process of circuit board manufacturing, the traditional screen printing operation for solder resist printing has a long production cycle and low production efficiency. With the advancement of technology, the industry is constantly implementing equipment automation, and solder resist printing is gradually being replaced by spraying operations. However, when spraying production is introduced, the ink sprayed from the spray gun nozzle is sprayed in a mist in all directions, resulting in a lot of ink in the machine's spray chamber, which brings great difficulties to production and maintenance.
[0003] Currently, the most common approach is to set up a separate enclosure structure to enclose the space between the nozzle and the circuit board's transport route. However, this approach inevitably requires frequent cleaning of the enclosure structure, and the spraying area cannot be changed. Excess paint on the enclosure structure may also contaminate the circuit board. Utility Model Content
[0004] The purpose of this utility model is to provide a protective cover for a solder resist printing spray gun, which aims to solve the technical problems existing in the prior art, such as the inability to adjust the spraying range, the high difficulty and frequency of cleaning the paint, and the inability to automatically collect and remove excess paint to prevent contamination of the circuit board.
[0005] To solve the above-mentioned technical problems, this utility model provides a protective cover for a solder resist printing spray gun, including a cover body with openings at both ends. The top of the cover body is provided with an adjustment mechanism and the bottom is provided with a material receiving mechanism. The material receiving mechanism includes a material receiving component provided along the bottom edge of the cover body and a material extraction component connected to the material receiving component. The material receiving component is provided with a material receiving groove that extends in a ring shape and matches the bottom edge of the cover body. The material receiving groove is located below the cover body and has a material dropping gap between it and the bottom of the cover body.
[0006] In the above solution, the open-end cover can be easily fitted onto the spray gun used for spraying, restricting the spraying of paint from all directions to a limited area. This helps to limit the spraying range and prevent excess paint from adhering or splashing inside the spray chamber, affecting cleaning and spraying quality. The adjustment mechanism can fix the cover and adjust its position relative to the adjustment mechanism, i.e., adjust the limitation of the spraying range by the cover, which helps to improve the adaptability of the protective cover. When the cover limits the spraying range, excess paint will be sprayed onto the inner wall of the cover, then slide down the inner wall to the bottom of the cover, and finally fall into the collection trough to be collected by the collection component, and then extracted from the collection component by the extraction component. In addition, when paint from other spray guns is sprayed onto the outer wall of the cover, the paint can also fall down the outer wall into the collection trough, which helps to prevent contamination of the circuit board and reduce the difficulty and frequency of cleaning.
[0007] Preferably, the cover is a cone-shaped structure, and the cone angle of the cone cylinder is 30°~60°.
[0008] In the above solution, the conical cylinder occupies less space and has no dead corners inside, making it easier to clean thoroughly. The conical cylinder helps the paint flow more smoothly into the collection trough, improving the efficiency of collecting excess paint. The narrow-to-wide design of the conical cylinder keeps the sliding speed of excess paint on it stable, preventing excessive flow from causing excess paint to overflow into the collection trough and contaminate the circuit board. The cone angle range is between 30° and 60° (inclusive), which helps maintain a normal spraying range and prevents poor spraying caused by the range being too large or too small.
[0009] Preferably, the adjustment mechanism includes a fixed component and a telescopic component, with one end of the telescopic component connected to the fixed component and the other end connected to the cover.
[0010] In the above scheme, the cover can be detachably fixed to the spray gun by adjusting the fixing and telescopic components of the mechanism. At the same time, its position relative to the spray gun can be adjusted to enlarge or reduce the spraying range to a certain extent, which is beneficial to improve the adaptability to different spraying ranges. The entire protective cover can also be disassembled for cleaning, which improves the flexibility of the protective cover installation.
[0011] Preferably, the fixing component includes an anti-slip sleeve, a clamping member fitted onto the anti-slip sleeve and having an opening, and a locking member threadedly connected to the clamping member. The clamping member is connected to the telescopic component, and a locking portion extends outward from the opening of the clamping member. The locking member is located on the locking portion and causes the clamping member to press against the anti-slip sleeve.
[0012] In the above scheme, the threaded connection between the locking component and the clamping component allows the clamping component to be easily contracted or expanded by rotating the locking component, which can easily adjust the tightness of the fixing component and improve the efficiency of the installation and removal of the protective cover. The anti-slip sleeve helps to increase the friction between the clamping component and the connection point during installation, preventing the fixing component from failing due to excessive force on the protective cover, and thus improving the installation stability and reliability of the fixing component.
[0013] Preferably, the telescopic assembly includes a fixed cylinder connected to the clamping member, a sliding cylinder connected to the cover, and an elastic limiting member. The sliding cylinder is slidably connected to the fixed cylinder. The fixed cylinder and the sliding cylinder are respectively provided with a plurality of first limiting holes and second limiting holes at intervals. The plurality of first limiting holes and second limiting holes are opposite to each other. The elastic limiting member is movably engaged in the first limiting holes and the second limiting holes.
[0014] In the above scheme, a sliding connection is formed between the sliding cylinder and the fixed cylinder. When they move away from or close to each other by a certain distance, multiple first limiting holes and second limiting holes will be relative to each other. At this time, the elastic limiting member passes through one of the first limiting holes and second limiting holes and keeps the relative position between the fixed cylinder and the sliding cylinder unchanged, so that the cover moves closer to or away from the fixed component, while the position of the spray gun remains unchanged. Therefore, the spraying range will be enlarged or reduced accordingly.
[0015] Preferably, the receiving trough is an arc-shaped trough with a "C"-shaped cross-section, and the bottom end of the cover is connected to the arc-shaped trough through multiple connecting parts.
[0016] In the above scheme, the receiving trough matches the bottom edge of the cover and extends in a ring shape. The cross-section of the arc-shaped trough is "C" shaped, making the receiving trough approximately a ring-shaped liquid storage tank. This can better collect and store excess paint, and the paint will automatically concentrate at the "C"-shaped contraction of the arc-shaped trough, which is conducive to the automatic collection and storage of excess paint and provides a guarantee for the discharge of excess paint. The connecting part can fix the receiving trough to the bottom of the cover and form a material drop gap without affecting the collection and storage of excess paint.
[0017] Preferably, an opening is formed between the two ends of the arc-shaped groove, the opening is opposite to the cover, and the bottom of the cover is received by the arc-shaped groove through the opening.
[0018] In the above solution, the receiving trough accommodates the bottom and connecting parts of the cover into the arc-shaped groove through the opening. At this time, the two ends of the arc-shaped groove are located on the inner side of the inner wall and the outer side of the outer wall of the cover, respectively. The advantage is that no matter whether there is paint flowing on the inner wall or the outer wall of the cover, it can eventually slide into the arc-shaped groove, realizing the automatic collection and storage of excess paint, and further ensuring that excess paint will not drip onto the circuit board through the cover or receiving component and cause pollution.
[0019] Preferably, the material extraction assembly includes a discharge valve, a material extraction pipe, and a vacuum pump. The material receiving component extends outward from the cover with a discharge pipe. One end of the discharge pipe is connected to the arc-shaped groove, and the other end is connected to the discharge valve. One end of the material extraction pipe is detachably connected to the discharge valve, and the other end is connected to the vacuum pump.
[0020] In the above scheme, after multiple spraying operations, a certain amount of excess paint will be collected in the arc-shaped groove. At this time, the suction pipe is installed into the discharge valve and the discharge valve is opened. The vacuum pump will automatically extract this excess paint from the arc-shaped groove through the suction pipe, discharge valve, and discharge pipe, without having to disassemble the entire protective cover. This achieves automatic discharge of excess paint to prevent it from overflowing and contaminating the circuit board, and also reduces the number of times the protective cover needs to be cleaned, thus improving spraying efficiency. Since the protective cover is fixed to the spray gun, and the spray gun moves up, down, left, and right, directly connecting the suction pipe to the cover would affect the spraying operation, reduce the spraying quality, and to some extent, cause the suction pipe itself to bend and become blocked. Therefore, the discharge valve is set so that the suction pipe can be connected only when excess paint needs to be extracted, which helps to ensure the quality of circuit board spraying and extend the service life of the suction component. The discharge pipe extends to the outside of the cover to avoid obstructing the spraying area and prevent affecting the spraying effect.
[0021] Preferably, the wall of the arc-shaped groove is inclined toward the connection between the arc-shaped groove and the discharge pipe.
[0022] In the above scheme, the connection between the arc-shaped groove and the discharge pipe is the bottom of the arc-shaped groove, i.e. the lowest point. The rest of the part is inclined towards the lowest point. This means that the excess paint collected in the arc-shaped groove can automatically flow to the discharge pipe under the influence of gravity, which is conducive to the extraction component to extract the excess paint and prevents the paint from remaining in the arc-shaped groove and becoming difficult to clean after a long time.
[0023] Compared with the prior art, the beneficial effects of this utility model are:
[0024] A cover is used to enclose the spray gun, restricting the spraying of paint from all directions to a limited area. This limits the spraying range and prevents excess paint from affecting cleaning. The cover is fixed to the spray gun via an adjustment mechanism, and its position relative to the spray gun can be adjusted to enlarge or reduce the spraying range to a certain extent, improving adaptability to different spraying range requirements. The cover can also be completely removed for cleaning. A material collection mechanism is used, where excess paint slides down the inner or outer wall of the cover under gravity and is automatically collected into a collection trough through the drop gap. Finally, it is extracted from the collection trough by a material extraction component, preventing excess paint from contaminating the circuit board and reducing the difficulty and frequency of cleaning excess paint. Attached Figure Description
[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the overall structure of a protective cover for a solder resist printing spray gun.
[0027] Figure 2 for Figure 1 Enlarged view of a part
[0028] Figure 3 This is a partial cross-sectional view of the connection between the receiving trough and the material extraction assembly.
[0029] Figure 4 This is a partial cross-sectional view of the connection between the cover body and the receiving trough.
[0030] Icons: 100-Cover; 110-Connecting part; 200-Adjusting mechanism; 210-Fixing component; 211-Clamping component; 2111-Opening; 2112-Locking part; 212-Anti-slip sleeve; 213-Locking component; 220-Telescopic component; 221-Fixing cylinder; 222-Sliding cylinder; 223-Elastic limiting component; 300-Receiving mechanism; 310-Receiving component; 311-Receiving trough; 3111-Arc groove; 3112-Passway; 312-Discharge pipe; 320-Suction component; 321-Suction pipe; 322-Vacuum pump; 323-Discharge valve. Detailed Implementation
[0031] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.
[0032] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0034] In this embodiment, please refer to Figures 1-4 As shown, this utility model provides a protective cover for a solder resist printing spray gun, including a cover body 100 with openings at both ends. The cover body 100 can be conveniently fitted onto a spray gun used for spraying, restricting the spraying of paint from all directions to a certain range. The top of the cover body 100 is provided with an adjustment mechanism 200 and the bottom is provided with a material receiving mechanism 300. The adjustment mechanism 200 can fix the cover body 100 and adjust the position of the cover body 100 relative to the adjustment mechanism 200, that is, adjust the restriction of the spraying range by the cover body 100, which is beneficial to improving the adaptability of the protective cover. The material receiving mechanism 300 includes a material receiving component 310 provided along the bottom edge of the cover body 100 and a material extraction component 320 connected to the material receiving component 310. The material receiving component 310 is provided with a material receiving groove 311 extending in an annular shape that matches the bottom edge of the cover body 100. The material receiving groove 311 is located below the cover body 100 and has a material dropping gap between it and the bottom of the cover body 100.
[0035] Understandably, when the cover 100 restricts the spraying range, excess paint will be sprayed onto the inner wall of the cover 100, then slide down the inner wall to the bottom of the cover 100, and finally fall into the receiving trough 311 through the drop gap and be collected by the receiving component 310, and then extracted from the receiving component 310 by the extraction component 320. In addition, when paint from other spray guns is sprayed onto the outer wall of the cover 100, the paint can also fall down the outer wall into the receiving trough 311, which helps to prevent contamination of the circuit board, improve the spraying quality, and reduce the difficulty and frequency of cleaning and maintenance.
[0036] In this embodiment, please refer to Figure 1 As shown, the cover 100 has a cone-shaped structure, and the cone angle of the cone tube is 30°~60°.
[0037] Understandably, the two ends of the cover 100 have narrow and wide openings, respectively. The narrow opening is connected to the adjustment mechanism 200 and the wide opening is connected to the material receiving mechanism 300. The cover 100 is fitted onto the spray gun used for spraying circuit boards. The cover 100 defines a circular spraying range in a circumferential state. In addition to the spraying range defined by the size of the cone angle of the cover 100, different spraying ranges can also be defined by the movement of the cover 100.
[0038] In some embodiments, the cover 100 may also be a pyramidal tube.
[0039] In this embodiment, please refer to Figure 2 As shown, the adjustment mechanism 200 includes a fixing component 210 and a telescopic component 220. One end of the telescopic component 220 is connected to the fixing component 210, and the other end is connected to the cover 100. The fixing component 210 includes an anti-slip sleeve 212, a clamping member 211 fitted onto the anti-slip sleeve 212 and having an opening 2111, and a locking member 213 threadedly connected to the clamping member 211. The clamping member 211 is connected to the telescopic component 220, and a locking portion 2112 extends outward from the opening 2111 of the clamping member 211. The locking member 213 is located at... The locking part 2112 causes the clamping member 211 to press against the anti-slip sleeve 212; the telescopic component 220 includes a fixed cylinder 221 connected to the clamping member 211, a sliding cylinder 222 connected to the cover 100, and an elastic limiting member 223. The sliding cylinder 222 is slidably connected to the fixed cylinder 221. The fixed cylinder 221 and the sliding cylinder 222 are respectively arranged with a plurality of first limiting holes and second limiting holes (not shown). The plurality of first limiting holes and second limiting holes are opposite to each other. The elastic limiting member 223 is movably locked in the first limiting hole and the second limiting hole.
[0040] The fixing component 210 can detachably install the cover 100 onto the spray gun. The telescopic component 220 can move the cover 100 closer to or further away from the fixing component 210 to adjust the position of the cover 100 relative to the spray gun, thereby enlarging or reducing the spraying range to a certain extent. The locking component 213 includes a knob handle and a bolt connected to the knob handle. When the locking component 213 is threadedly connected to the locking part 2112, the locking parts 2112 on both sides of the opening 2111 will move closer to each other. In this way, the clamping component 211 will contract towards the center and squeeze the anti-slip sleeve 212, thereby fixing the position of the protective cover. The anti-slip sleeve 212 can further increase the friction between the clamping component 211 and the connection point during installation, preventing the fixing component 210 from failing due to excessive force on the protective cover, which could cause the protective cover to shift or even detach from the spray gun.
[0041] In addition, in some embodiments, a drive component, such as a cylinder drive or a hydraulic drive, may be provided to drive the telescopic component 220 to move the cover 100 closer to or away from the fixed component 210.
[0042] In addition, in some embodiments, a pair of internally threaded cylinders and externally threaded cylinders with threaded engagement can be provided. The externally threaded cylinder is sleeved on the spray gun, and the internally threaded cylinder is set on the cover 100. When the protective cover is sleeved on the spray gun, the cover 100 can be fixed by the threaded engagement between the internally threaded cylinder and the externally threaded cylinder.
[0043] A sliding connection is formed between the fixed cylinder 221 and the sliding cylinder 222. When they move away from or closer to each other by a certain distance, the multiple first limiting holes and second limiting holes will be relative to each other. At this time, the elastic limiting member 223 passes through one of the first limiting holes and second limiting holes and keeps the relative position between the fixed cylinder 221 and the sliding cylinder 222 unchanged, so that the cover 100 moves closer to or further away from the fixed component 210, while the position of the spray gun remains unchanged. Therefore, the spraying range will be enlarged or reduced accordingly.
[0044] The elastic limiting member 223 includes a limiting pin and a spring that compresses the limiting pin. The elastic limiting member 223 can be disposed on the inner or outer wall of the fixed cylinder 221 or the sliding cylinder 222 and pass through the corresponding first limiting hole or second limiting hole, and abut against the sliding cylinder 222 or the fixed cylinder 221. When the two limiting holes on the fixed cylinder 221 and the sliding cylinder 222 are opposite to each other, the elastic limiting member 223 will slide and be inserted into the corresponding second limiting hole or first limiting hole to fix the relative position of the fixed cylinder 221 and the sliding cylinder 222.
[0045] Alternatively, a positioning pin can be used to engage with the first and second limiting holes.
[0046] In addition, in some embodiments, at least one movable cylinder may be provided between the fixed cylinder 221 and the sliding cylinder 222. The movable cylinder is provided with a third limiting hole and an elastic limiting member 223. The third limiting hole may be opposite to the first limiting hole and the second limiting hole.
[0047] In this embodiment, please refer to Figure 1 , Figure 3 and Figure 4 As shown, the receiving trough 311 is an arc-shaped trough 3111 with a "C"-shaped cross-section. The bottom end of the cover 100 is connected to the arc-shaped trough 3111 through multiple connecting parts 110. A through-hole 3112 is formed between the two ends of the arc-shaped trough 3111. The through-hole 3112 is opposite to the cover 100, and the bottom of the cover 100 is accommodated by the arc-shaped trough 3111 through the through-hole 3112. The material extraction assembly 320 includes a discharge valve 323, a material extraction pipe 321, and a vacuum pump 322. The receiving component 310 extends outward from the cover with a discharge pipe 312. One end of the discharge pipe 312 is connected to the arc-shaped trough 3111, and the other end is connected to the discharge valve 323. One end of the extraction pipe 321 is detachably connected to the discharge valve 323, and the other end is connected to the vacuum pump 322. The trough wall of the arc-shaped trough 3111 is inclined towards the connection between the arc-shaped trough 3111 and the discharge pipe 312.
[0048] The connecting part 110 is a protrusion. The cover 100 is connected to the "C"-shaped arc groove 3111 through multiple connecting parts 110. The connection can be one end of the arc groove 3111, the inner wall of the groove, or the outer wall, as long as the receiving trough 311 can receive the excess paint that slides off the inner wall of the cover 100. Furthermore, the bottom of the cover 100 and the multiple connecting parts 110 are accommodated by the arc groove 3111 through the opening 3112 formed between the two ends of the arc groove 3111. At this time, the connecting part 110 is connected to the bottom of the arc groove 3111, and the two ends of the arc groove 3111 are located on the inner side of the inner wall and the outer side of the outer wall of the cover 100, respectively, so that the excess paint that slides off the inner wall and the outer wall of the cover 100 can be collected and stored by the receiving trough 311 through the material drop gap.
[0049] In addition, the arc-shaped groove 3111 can also be a "U" shape, "[" shape or other structures, so as to collect excess paint on the inner and outer walls of the cover 100 at the same time; the connection between the connecting part 110 and the arc-shaped groove 3111 can be welding, bolt connection, pin connection or other methods.
[0050] The receiving component 310 extends outward from the cover body with a discharge pipe 312. This pipe connects the bottom of the arc-shaped groove 3111 to the outside. To avoid affecting the spraying range and effect due to this connection, the discharge pipe 312 has an "L" shape and points outward from the cover body 100. It is worth noting that the bottom of the arc-shaped groove 3111 refers to the furthest point from the liquid surface when the paint inside the arc-shaped groove 3111 is level due to gravity. This is because the paint will naturally flow to this point due to gravity, facilitating collection and extraction, and reducing paint residue. The discharge valve 323 restricts the connectivity between the discharge pipe 312 and the extraction pipe 321, preventing the extraction pipe 321 from being continuously connected. Instead of connecting the material receiving part 310, the connection is only made when the paint in the arc-shaped groove 3111 is being extracted. This prevents the extraction pipe from bending or affecting the spraying range and effect when the protective cover moves with the spray gun. Furthermore, the walls of the arc-shaped groove 3111 are tilted towards this point. This is because, under normal circumstances, the furthest point of the arc-shaped groove 3111 from the horizontal liquid surface is a circular line. The channel of the discharge pipe 312 on the arc-shaped groove 3111 cannot cover the entire circular line. Therefore, after tilting the walls of the arc-shaped groove 3111 towards this point, the furthest point of the arc-shaped groove 3111 from the horizontal liquid surface becomes the connection point between the discharge pipe 312 and the arc-shaped groove 3111. The paint inside the arc-shaped groove 3111 will flow towards this point, further enhancing the aforementioned paint flow effect.
[0051] In addition, in some embodiments, the discharge pipe 312 may also be of the "I" shape, arc shape, or other structures, and may be connected to the bottom or outer side wall of the receiving component.
[0052] It should be noted that because the protective cover has the effect of limiting the spraying range, if the entire receiving trough 311 is tilted to achieve the above function, the spraying range and the amount of paint stored in the receiving trough will change to a certain extent, and it will not be conducive to the uniform force on the protective cover, affecting the stability and reliability of the fixing component 210.
[0053] In addition, in some embodiments, multiple discharge pipes 312 and discharge valves 323 may be provided.
[0054] The specific application process of this utility model is as follows:
[0055] Disconnect the feed pipe 322 and close the discharge valve 323. Place the cover 100 onto the spray gun. Use the locking member 213 to lock the locking part 2112 of the clamping member 211, causing the clamping member 211 to press the anti-slip sleeve 212 towards the center, thus fixing the cover 100. At this time, the telescopic component 220 can be adjusted to move the cover 100 closer to or further away from the spray gun to adjust the spraying range. Start spraying. The paint is only sprayed onto the circuit board within the range limited by the protective cover. Excess paint is sprayed onto the cover 100 and, due to gravity, slides down the inner or outer wall of the cover 100. The paint falls into the arc-shaped groove 3111 of the receiving trough 311, and then gathers at the connection between the discharge pipe 312 and the arc-shaped groove 3111. After a certain period of spraying, a certain amount of paint is collected in the receiving trough 3111. The extraction pipe 322 is connected to the discharge valve 323, the discharge valve 323 is opened, and the excess paint is extracted by the vacuum pump 322. This reduces the difficulty and frequency of cleaning excess paint, and automatically collects and removes excess paint to prevent contamination of the circuit board. In addition, the entire protective cover can be disassembled directly for cleaning without connecting the extraction pipe 322.
[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A protective cover for a solder resist printing spray gun, characterized in that, include: The cover has openings at both ends. The top of the cover is provided with an adjustment mechanism and the bottom is provided with a material receiving mechanism. The material receiving mechanism includes a material receiving component provided along the bottom edge of the cover and a material extraction component connected to the material receiving component. The material receiving component is provided with a circular material receiving groove that matches the bottom edge of the cover. The material receiving groove is located below the cover and has a material dropping gap between it and the bottom of the cover.
2. The protective cover for a solder resist printing spray gun according to claim 1, characterized in that, The cover has a cone-shaped structure with a cone angle of 30° to 60°.
3. The protective cover for a solder resist printing spray gun according to claim 1, characterized in that, The adjustment mechanism includes a fixed component and a telescopic component, with one end of the telescopic component connected to the fixed component and the other end connected to the cover.
4. A protective cover for a solder resist printing spray gun according to claim 3, characterized in that, The fixing component includes an anti-slip sleeve, a clamping member fitted onto the anti-slip sleeve and having an opening, and a locking member threadedly connected to the clamping member. The clamping member is connected to the telescopic component, and a locking portion extends outward from the opening of the clamping member. The locking member is located on the locking portion and causes the clamping member to press against the anti-slip sleeve.
5. A protective cover for a solder resist printing spray gun according to claim 4, characterized in that, The telescopic assembly includes a fixed cylinder connected to the clamping member, a sliding cylinder connected to the cover, and an elastic limiting member. The sliding cylinder is slidably connected to the fixed cylinder. The fixed cylinder and the sliding cylinder are respectively provided with a plurality of first limiting holes and second limiting holes at intervals. The plurality of first limiting holes and second limiting holes are opposite to each other. The elastic limiting member is movably locked in the first limiting holes and the second limiting holes.
6. A protective cover for a solder resist printing spray gun according to claim 1, characterized in that, The receiving trough is an arc-shaped trough with a "C"-shaped cross-section, and the bottom end of the cover is connected to the arc-shaped trough through multiple connecting parts.
7. A protective cover for a solder resist printing spray gun according to claim 6, characterized in that, An opening is formed between the two ends of the arc-shaped groove, the opening being opposite to the cover, and the bottom of the cover is accommodated by the arc-shaped groove through the opening.
8. A protective cover for a solder resist printing spray gun according to claim 6, characterized in that, The material extraction assembly includes a discharge valve, a material extraction pipe, and a vacuum pump. The material receiving component extends outward from the cover with a discharge pipe. One end of the discharge pipe is connected to the arc-shaped groove, and the other end is connected to the discharge valve. One end of the material extraction pipe is detachably connected to the discharge valve, and the other end is connected to the vacuum pump.
9. A protective cover for a solder resist printing spray gun according to claim 8, characterized in that, The wall of the arc-shaped groove is inclined toward the connection between the arc-shaped groove and the discharge pipe.