Drip-proof UV photocuring solder resist oil device and method thereof

Abstract

The invention discloses a drip-proof UV photocuring solder resist oil device and method, the device comprises a nozzle pipeline, the nozzle pipeline is of a hollow tubular structure, one end of the nozzle pipeline is a glue inlet, the other end of the nozzle pipeline is a nozzle outlet, and the upper end of the nozzle pipeline is provided with a solder resist pipe fitting; the spring loading type valve body mechanism is arranged on the inner side of the nozzle outlet, and the spring loading type valve body mechanism comprises a valve body, a reset spring and a limiting support; one end of the reset spring is fixedly connected with the outer wall of the lower end of the valve body, and the other end of the reset spring is fixed to the limiting support. The spray nozzle anti-leakage mechanism is simple in structure, free of power supply control, rapid in response, automatic in opening and closing, free of maintenance and high in adaptability, automatic opening and closing and physical sealing of the spray nozzle are achieved through natural balance of oil pressure and elastic force, glue liquid is effectively prevented from leaking in a non-operation state, and the service life of the spray nozzle is prolonged. The cleanliness, the stability and the service life of the dispensing equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of UV curable solder resist oil, and particularly to a drip-proof UV curable solder resist oil device and method thereof. Background Technique

[0002] In high-precision processes such as electronic manufacturing, PCB coating, and LED packaging, UV curable solder resist oil (also known as UV green oil) is widely used for the protection and light shielding treatment of circuit boards. Such materials have characteristics such as high viscosity, fast curing, and low volatility, and are often precisely applied to the target area through automatic dispensing or spraying equipment.

[0003] Currently, most common dispensing systems use a combination of pneumatic / electric control valves and needle nozzles or spray heads to achieve liquid output control. However, in actual applications, due to: 1. The high viscosity of the colloid itself; 2. Uneven release of residual pressure in the nozzle; 3. The lack of a sealing structure at the outlet, etc.; after the equipment stops operating, the phenomenon of slow dripping of the glue often occurs. In the light case, it causes PCB pollution and affects the product appearance, and in the severe case, it leads to device short circuits, entire board scrapping, and an increase in the rework rate. The traditional improvement methods mainly focus on: 1. Improving the program control accuracy and optimizing the back suction control; 2. Installing solenoid valves and pneumatic valves to control the outlet; 3. Adding manual wiping or stop glue protection delay; but the above solutions have problems such as high cost, complex control, difficult maintenance, and insufficient reliability, and cannot completely avoid the oil dripping phenomenon under long-term use or unstable air pressure. Summary of the Invention

[0004] The purpose of the present invention is to provide a drip-proof UV curable solder resist oil device and method thereof to solve the problem proposed in the above background technique that most common dispensing systems use a combination of pneumatic / electric control valves and needle nozzles or spray heads to achieve liquid output control. However, in actual applications, due to: 1. The high viscosity of the colloid itself; 2. Uneven release of residual pressure in the nozzle; 3. The lack of a sealing structure at the outlet, etc.; after the equipment stops operating, the phenomenon of slow dripping of the glue often occurs. In the light case, it causes PCB pollution and affects the product appearance, and in the severe case, it leads to device short circuits, entire board scrapping, and an increase in the rework rate. The traditional improvement methods mainly focus on: 1. Improving the program control accuracy and optimizing the back suction control; 2. Installing solenoid valves and pneumatic valves to control the outlet; 3. Adding manual wiping or stop glue protection delay; but the above solutions have problems such as high cost, complex control, difficult maintenance, and insufficient reliability, and cannot completely avoid the oil dripping phenomenon under long-term use or unstable air pressure.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A drip-proof UV curable solder resist oil device includes Nozzle pipe, the nozzle pipe is a hollow tubular structure, one end of which is a glue inlet and the other end is a nozzle outlet, and a solder paste fitting is provided at the upper end of the nozzle pipe; Spring-loaded valve body mechanism, arranged inside the nozzle outlet, the spring-loaded valve body mechanism includes a valve body, a return spring and a limit bracket; the diameter of the valve body is larger than the inner diameter of the nozzle outlet, the valve body is slidably arranged at the lower end of the solder paste fitting, the lower end of the valve body is T-shaped, one end of the return spring is fixedly connected to the outer wall of the lower end of the valve body, and the other end is fixed on the limit bracket, and the limit bracket is integrally formed with the inner wall of the nozzle pipe; And a nozzle body, the nozzle body is installed at the lower end of the nozzle pipe through a disassembly and assembly mechanism.

[0006] In a preferred embodiment: a flexible sealing layer is provided at the edge of the valve body; the height of the limit bracket is higher than the inner wall of the bottom end of the nozzle pipe, the solder paste fitting includes a pipe body and an extension block integrally formed at the lower end of the pipe body, the extension block is threadedly connected to the nozzle pipe, the valve body is slidably connected to the inner wall of the extension block, and a plurality of equally spaced drainage ports are provided on the wall of the extension block.

[0007] In a preferred embodiment: diversion channels are provided on the inner wall of the limit bracket, the lower wall of the pipe body and the nozzle body, the diversion channels provided on the limit bracket and the inner wall of the nozzle body are communicated with the nozzle outlet, a first groove is provided at the upper end of the valve body, the return spring adopts a double-layer spring structure, the return spring includes a memory spring and a helical spring, the inner layer of the return spring is a nickel-titanium alloy shape memory spring, and the outer layer is nested with a stainless steel helical spring.

[0008] In a preferred embodiment: there are two disassembly and assembly mechanisms, and they are symmetrically distributed. The disassembly and assembly mechanism includes two symmetrically distributed second grooves opened on the lower wall of the nozzle pipe, two symmetrically distributed fixing blocks installed on the nozzle body, a clamping groove provided on the side wall of the fixing block, a clamping block clamped in the clamping groove, a limit block for limiting the upper end of the fixing block, and a reinforcement component. The fixing block is a cylinder, the clamping block and the limit block are integrally formed with the fixing plate, a support column is rotatably connected to the inner wall of the fixing plate, one end of the support column is fixedly connected to the wall of the nozzle pipe, the upper end of the limit block is fixedly connected to a first spring, and the other end of the first spring is fixedly connected to the wall of the nozzle pipe.

[0009] In a preferred embodiment: the reinforcement component includes a third groove opened at the upper end of the fixing block, a magnet fixedly arranged in the third groove, and an electromagnet attracted to the magnet. The upper end of the electromagnet is fixedly connected to a control block, the upper end of the control block is fixedly connected to the lower wall of the nozzle pipe, and a control member is arranged in the control block.

[0010] In a preferred embodiment: The control member includes a trigger switch, a touch plate, a third spring, and a retaining plate. A cavity is further formed on the inner wall of the control block. The trigger switch is disposed in the cavity. A touch plate is provided at the upper end of the trigger switch. A third spring is provided between the upper end of the touch plate and the inner wall of the control block. A retaining plate is movably disposed in the cavity. The retaining plate is in the shape of a triangular prism, and one end of the retaining plate is disposed at a position corresponding to the contact surface between the trigger switch and the touch plate.

[0011] In a preferred embodiment: An opening is formed on the wall of the control block. The trigger switch is electrically connected to a wire. The other end of the wire passes through the opening and is electrically connected to an electromagnet. One end of the retaining plate is fixedly connected to a retaining post. The end of the retaining post away from the retaining plate is slidably disposed outside the nozzle pipe. The retaining post is slidably connected to the control block.

[0012] In a preferred embodiment: An arc-shaped plate is fixedly connected to the end of the retaining post away from the control block. A fourth spring is sleeved on the outer wall of the retaining post. One end of the fourth spring is fixedly connected to the outer wall of the nozzle pipe, and the other end of the fourth spring is fixedly connected to the arc-shaped plate.

[0013] A method for using a drip-proof UV curable solder resist oil device is as follows: S1. Align the fixing block on the nozzle body with the second groove on the lower end wall of the nozzle pipe and insert it. At this time, the clamping block is snapped into the clamping groove. At the same time, the limiting block limits the upper end of the fixing block under the action of the first spring. At the same time, the touch plate contacts the trigger switch, the wire generates electricity, the electromagnet is powered on, and it attracts the magnet on the fixing block, completing the installation and reinforcement of the nozzle body. S2. Connect the glue inlet of the device to an external glue supply device, turn on the glue supply device, and the UV curable solder resist oil enters the nozzle pipe through the drainage port on the solder resist oil pipe fitting. Under the action of the glue pressure, the valve body is pushed downward to open the nozzle outlet, and the glue passes through the diversion channels on the limiting bracket and the inner wall of the nozzle body and is output from the nozzle outlet for dispensing operation. S3. When the dispensing operation is completed, turn off the glue supply device, the glue pressure disappears, and under the action of the return spring, the valve body quickly moves upward to block the nozzle outlet and prevent the glue from dripping.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: The nozzle anti-drip mechanism of the present invention is simple in structure, does not require power control, has a fast response, automatic opening and closing, is maintenance-free and has strong adaptability. Through the spring-loaded valve body mechanism, when the glue supply stops, the return spring can quickly push the valve body upward to block the nozzle outlet. Utilizing the natural balance of oil pressure and elastic force, it realizes the automatic opening and closing and physical sealing of the nozzle, effectively preventing the leakage of glue in the non-operating state, improving the cleanliness, stability and service life of the dispensing equipment. Compared with traditional devices, it can effectively avoid the glue dripping phenomenon caused by problems such as the viscosity of the colloid and uneven release of the residual pressure of the nozzle, greatly reducing problems such as PCB pollution and device short-circuit caused by dripping, reducing the product scrap rate, and is applicable to multiple fields such as PCB manufacturing, LED packaging, and medical potting. The device of the present invention does not require a complex pneumatic / electric control valve system, nor does it require frequent manual intervention, reducing the manufacturing cost and maintenance cost of the equipment. At the same time, the disassembly and assembly mechanism is convenient and fast, facilitating the replacement of different types of nozzle bodies, capable of meeting different production requirements, improving the versatility and practicality of the equipment, and having high reliability: the return spring adopts a double-layer spring structure. The inner nickel-titanium alloy shape memory spring can adjust the elastic force according to the working state, and the outer stainless steel spiral spring provides a stable return force. The combination of the two improves the reliability of the device under different working conditions, ensures long-term stable operation, and reduces the probability of failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of the UV curable solder resist oil device of the present invention; Figure 2 is of the present invention Figure 1 schematic enlarged structure diagram at A; Figure 3 is a schematic cross-sectional structure diagram of the overall UV curable solder resist oil device of the present invention; Figure 4 is a schematic diagram of the internal structure of the control block of the present invention; Figure 5 is a schematic diagram of the structure of the backing plate of the present invention; Figure 6 is a schematic diagram of the lower end structure of the extension block of the present invention; In the figure: 1, nozzle pipe; 2, glue inlet; 3, nozzle outlet; 4, valve body; 5, return spring; 6, limit bracket; 7, nozzle body; 8, pipe body; 9, extension block; 10, drainage port; 11, diversion channel; 12, first groove; 13, second groove; 14, fixing block; 15, clamping groove; 16, clamping block; 17, limit block; 18, fixing plate; 19, support column; 20, first spring; 21, third groove; 22, magnet; 23, electromagnet; 24, control block; 25, trigger switch; 26, touch plate; 27, third spring; 28, abutting plate; 29, opening; 30, abutting column; 31, arc plate. Detailed implementation manner

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1 - 6 , the present invention provides a technical solution: an anti-drip UV curable solder resist oil device, including, Nozzle pipe 1, the nozzle pipe 1 is a hollow tubular structure, one end of which is a glue inlet 2 and the other end is a nozzle outlet 3. A solder resist pipe fitting is provided at the upper end of the nozzle pipe 1 for guiding the glue into the interior of the nozzle pipe 1; Spring-loaded valve body mechanism, arranged inside the nozzle outlet 3, the spring-loaded valve body mechanism includes a valve body 4, a return spring 5 and a limit bracket 6; the diameter of the valve body 4 is larger than the inner diameter of the nozzle outlet 3, the valve body 4 is slidably arranged at the lower end of the solder resist pipe fitting, the lower end of the valve body 4 is T-shaped, one end of the return spring 5 is fixedly connected to the outer wall of the lower end of the valve body 4, and the other end is fixed to the limit bracket 6. The limit bracket 6 is integrally formed with the inner wall of the nozzle pipe 1. When in use, under the action of the glue pressure, the valve body 4 can move downward to open the nozzle outlet 3. When the glue supply stops, the return spring 5 can quickly push the valve body 4 upward to block the nozzle outlet 3, thereby effectively preventing the glue from dripping; And a nozzle body 7, the nozzle body 7 is installed at the lower end of the nozzle pipe 1 through a disassembly and assembly mechanism, which is convenient to replace different types of nozzle bodies 7 according to different coating requirements.

[0018] A flexible sealing layer is provided at the edge of the valve body 4, which can further enhance the sealing effect of the valve body 4 on the nozzle outlet 3 and prevent the leakage of glue; the height of the limit bracket 6 is higher than the inner wall of the bottom end of the nozzle pipe 1. The solder paste pipe fitting includes a pipe body 8 and an extension block 9 integrally formed at the lower end of the pipe body 8. The extension block 9 is threadedly connected to the nozzle pipe 1, which is convenient for the installation and disassembly of the nozzle pipe 1. The valve body 4 is slidably connected to the inner wall of the extension block 9. A number of equally spaced drainage ports 10 are provided on the wall of the extension block 9, which can evenly guide the glue into the nozzle pipe 1.

[0019] Flow guiding channels 11 are provided on the inner wall of the limit bracket 6, the lower end wall of the pipe body 8, and the nozzle body 7. The flow guiding channels 11 provided on the limit bracket 6 and the inner wall of the nozzle body 7 are communicated with the nozzle outlet 3. A first groove 12 is provided at the upper end of the valve body 4. The return spring 5 adopts a double-layer spring structure. The return spring 5 includes a memory spring and a helical spring. The inner layer of the return spring 5 is made of a nickel-titanium alloy shape memory spring. After the nickel-titanium alloy shape memory spring elongates, its pre-tightening force on the flap, that is, the elastic force that prevents the flap from opening, will decrease. The outer layer is nested with a stainless steel helical spring. The double-layer spring structure can adjust the elastic force according to different working states while ensuring the return effect, improving the adaptability of the device. The nozzle body 7 is a standard nozzle, suitable for conventional dispensing, micro nozzles, and wide-angle nozzles, with a fan-shaped outlet, suitable for large-area coating.

[0020] There are two disassembly and assembly mechanisms, which are symmetrically distributed. The disassembly and assembly mechanism includes two symmetrically distributed second grooves 13 opened on the lower end wall of the nozzle pipe 1, two symmetrically distributed fixing blocks 14 installed on the nozzle body 7, a clamping groove 15 provided on the side wall of the fixing block 14, a clamping block 16 clamped in the clamping groove 15, a limiting block 17 for limiting the upper end of the fixing block 14, and a reinforcement component. The fixing block 14 is a cylinder. The clamping block 16 and the limiting block 17 are integrally formed with the fixing plate 18. A support column 19 is rotatably connected to the inner wall of the fixing plate 18. One end of the support column 19 is fixedly connected to the wall of the nozzle pipe 1. The upper end of the limiting block 17 is fixedly connected with a first spring 20, and the other end of the first spring 20 is fixedly connected to the wall of the nozzle pipe 1, which can realize the quick installation and preliminary fixation of the nozzle body 7.

[0021] The reinforcement component includes a third groove 21 opened at the upper end of the fixing block 14, a magnet 22 fixedly arranged in the third groove 21, and an electromagnet 23 attracted to the magnet 22. The upper end of the electromagnet 23 is fixedly connected with a control block 24, and the upper end of the control block 24 is fixedly connected to the lower end wall of the nozzle pipe 1. A control component is arranged in the control block 24.

[0022] When the nozzle body 7 needs to be replaced, press the arc-shaped plate 31 to move towards the nozzle pipe 1 so that the two abutting columns 30 move in the same direction, thereby driving the abutting plate 28 to move towards the touch plate 26 and the trigger switch 25, and then pushing the touch plate 26 to move upward. The trigger switch 25 is separated from the touch plate 26, the trigger switch 25 is turned off, the electromagnet 23 is powered off, the attraction to the magnet 22 is released, and then the nozzle body 7 is pulled out downward to complete the disassembly.

[0023] The control member includes a trigger switch 25, a touch plate 26, a third spring 27 and an abutting plate 28. A cavity is further formed on the inner wall of the control block 24. The trigger switch 25 is arranged in the cavity. A touch plate 26 is arranged at the upper end of the trigger switch 25. A third spring 27 is arranged between the upper end of the touch plate 26 and the inner wall of the control block 24. An abutting plate 28 is movably arranged in the cavity. The shape of the abutting plate 28 is a triangular body. One end of the abutting plate 28 is arranged at a position corresponding to the contact surface of the trigger switch 25 and the touch plate 26.

[0024] An opening 29 is formed on the wall of the control block 24. The trigger switch 25 is electrically connected to a wire, and the other end of the wire passes through the opening 29 and is electrically connected to the electromagnet 23. One end of the abutting plate 28 is fixedly connected to an abutting column 30. The end of the abutting column 30 away from the abutting plate 28 is slidably arranged outside the nozzle pipe 1. The abutting column 30 is slidably connected to the control block 24.

[0025] The end of the abutting column 30 away from the control block 24 is fixedly connected to an arc-shaped plate 31. A fourth spring is sleeved on the outer wall of the abutting column 30. One end of the fourth spring is fixedly connected to the outer wall of the nozzle pipe 1, and the other end of the fourth spring is fixedly connected to the arc-shaped plate 31.

[0026] A method for using an anti-drip UV light-curing solder resist oil device is as follows: S1. Align the fixing block 14 on the nozzle body 7 with the second groove 13 on the lower end wall of the nozzle pipe 1 and insert it. At this time, the clamping block 16 is clamped into the clamping groove 15. At the same time, the limiting block 17 limits the upper end of the fixing block 14 under the action of the first spring 20. At the same time, the touch plate 26 contacts the trigger switch 25, the wire generates electricity, the electromagnet 23 is powered on, and attracts the magnet 22 on the fixing block 14 to complete the installation and reinforcement of the nozzle body 7. S2. Connect the glue inlet 2 of the device to an external glue supply device, turn on the glue supply device, and the UV light-curing solder resist oil enters the nozzle pipe 1 through the diversion port 10 on the solder resist oil pipe fitting. Under the action of the glue pressure, the valve body 4 is pushed downward to open the nozzle outlet 3, and the glue passes through the diversion channels 11 on the limiting bracket 6 and the inner wall of the nozzle body 7 and is output from the nozzle outlet 3 for dispensing operation. S3. After the dispensing operation is completed, the glue supply device is turned off, and the glue pressure disappears. Under the action of the return spring 5, the valve body 4 quickly moves upward to block the nozzle outlet 3 and prevent the glue from dripping.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drip-proof UV curable solder resist oil device, characterized in that: Comprising, A nozzle pipe (1), the nozzle pipe (1) being a hollow tubular structure, with one end being a glue inlet (2) and the other end being a nozzle outlet (3), and a solder paste fitting being provided at the upper end of the nozzle pipe (1); A spring-loaded valve body mechanism, disposed inside the nozzle outlet (3), the spring-loaded valve body mechanism including a valve body (4), a return spring (5) and a limit bracket (6); the diameter of the valve body (4) is greater than the inner diameter of the nozzle outlet (3), the valve body (4) is slidably disposed at the lower end of the solder paste fitting, the lower end of the valve body (4) is T-shaped, one end of the return spring (5) is fixedly connected to the outer wall of the lower end of the valve body (4), and the other end is fixed to the limit bracket (6), and the limit bracket (6) is integrally formed with the inner wall of the nozzle pipe (1); And a nozzle body (7), the nozzle body (7) being installed at the lower end of the nozzle pipe (1) through a disassembly and assembly mechanism.

2. The anti-drip UV curable solder mask oil device according to claim 1, characterized in that: A flexible sealing layer is provided at the edge of the valve body (4); the height of the limit bracket (6) is higher than the inner wall of the bottom end of the nozzle pipe (1), the solder paste fitting includes a pipe body (8) and an extension block (9) integrally formed at the lower end of the pipe body (8), the extension block (9) is threadedly connected to the nozzle pipe (1), the valve body (4) is slidably connected to the inner wall of the extension block (9), and a plurality of equally spaced drainage ports (10) are provided on the wall of the extension block (9).

3. The anti-drip UV curable solder mask oil device according to claim 2, characterized in that: Flow guiding channels (11) are provided on the inner wall of the limit bracket (6), the lower wall of the pipe body (8), and the nozzle body (7), the flow guiding channels (11) provided on the limit bracket (6) and the inner wall of the nozzle body (7) are communicated with the nozzle outlet (3), a first groove (12) is provided at the upper end of the valve body (4), the return spring (5) adopts a double-layer spring structure, the return spring (5) includes a memory spring and a helical spring, and the inner layer of the return spring (5) is a nickel-titanium alloy shape memory spring, and the outer layer is nested with a stainless steel helical spring.

4. The anti-drip UV curable solder mask oil device according to claim 3, wherein: There are two disassembly and assembly mechanisms, and they are symmetrically distributed. The disassembly and assembly mechanism includes two symmetrically distributed second grooves (13) opened on the lower wall of the nozzle pipe (1), two symmetrically distributed fixing blocks (14) installed on the nozzle body (7), a clamping groove (15) provided on the side wall of the fixing block (14), a clamping block (16) clamped in the clamping groove (15), a limit block (17) for limiting the upper end of the fixing block (14), and a reinforcement component. The fixing block (14) is a cylinder, the clamping block (16) and the limit block (17) are integrally formed with a fixing plate (18), a support column (19) is rotatably connected to the inner wall of the fixing plate (18), one end of the support column (19) is fixedly connected to the wall of the nozzle pipe (1), the upper end of the limit block (17) is fixedly connected to a first spring (20), and the other end of the first spring (20) is fixedly connected to the wall of the nozzle pipe (1).

5. The anti-drip UV curable solder resist oil device according to claim 4, wherein: The reinforcement component includes a third groove (21) opened at the upper end of the fixed block (14), a magnet (22) fixedly arranged in the third groove (21), and an electromagnet (23) attracted to the magnet (22). The upper end of the electromagnet (23) is fixedly connected to a control block (24). The upper end of the control block (24) is fixedly connected to the lower end wall of the nozzle pipe (1). A control member is arranged in the control block (24).

6. The anti-drip UV curable solder resist oil device according to claim 5, characterized in that: The control member includes a trigger switch (25), a touch plate (26), a third spring (27), and a resisting plate (28). A cavity is further opened on the inner wall of the control block (24). The trigger switch (25) is arranged in the cavity. A touch plate (26) is arranged above the trigger switch (25). A third spring (27) is arranged between the upper end of the touch plate (26) and the inner wall of the control block (24). A resisting plate (28) is movably arranged in the cavity. The shape of the resisting plate (28) is a triangular body. One end of the resisting plate (28) is arranged at a position corresponding to the contact surface of the trigger switch (25) and the touch plate (26).

7. An anti-drip UV curable solder resist oil device according to claim 6, characterized in that: An opening (29) is opened on the wall of the control block (24). The trigger switch (25) is electrically connected to a wire. The other end of the wire passes through the opening (29) and is electrically connected to the electromagnet (23). One end of the resisting plate (28) is fixedly connected to a resisting post (30). The end of the resisting post (30) far away from the resisting plate (28) is slidably arranged outside the nozzle pipe (1). The resisting post (30) is slidably connected to the control block (24).

8. An anti-drip UV curable solder resist oil device according to claim 7, characterized in that: An arc-shaped plate (31) is fixedly connected to the end of the resisting post (30) far away from the control block (24). A fourth spring is sleeved on the outer wall of the resisting post (30). One end of the fourth spring is fixedly connected to the outer wall of the nozzle pipe (1). The other end of the fourth spring is fixedly connected to the arc-shaped plate (31).

9. The method of using a device for a drip-proof UV curable solder resist oil device according to any one of claims 1-8, characterized in that: The specific content is as follows: S1. Align the fixed block (14) on the nozzle body (7) and insert it into the second groove (13) on the lower end wall of the nozzle pipe (1). At this time, the clamping block (16) is clamped into the clamping groove (15). At the same time, under the action of the first spring (20), the limiting block (17) limits the upper end of the fixed block (14). At the same time, the touch plate (26) contacts the trigger switch (25), the wire generates electricity, the electromagnet (23) is powered on, and attracts the magnet (22) on the fixed block (14) to complete the installation and reinforcement of the nozzle body (7). S2. Connect the glue inlet (2) of the device to an external glue supply device. Turn on the glue supply device. The UV light-curing solder resist oil enters the nozzle pipe (1) through the diversion port (10) on the solder resist pipe fitting. Under the action of the glue pressure, the valve body (4) is pushed downward to open the nozzle outlet (3). The glue passes through the diversion channels (11) on the limiting bracket (6) and the inner wall of the nozzle body (7) and is output from the nozzle outlet (3) for dispensing operation. S3. When the dispensing operation is completed, turn off the glue supply device. The glue pressure disappears. Under the action of the return spring (5), the valve body (4) quickly moves upward to block the nozzle outlet (3) to prevent glue leakage.

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