Spray head assembly for spraying circuit board

Abstract

The utility model discloses a spray head assembly for spraying a circuit board, which relates to the technical field of spray heads and comprises a spray head body and a spraying pipe fixedly connected to the bottom of the spray head body, a threaded ring is fixedly mounted at the top of the spray head body, an annular groove is fixedly mounted in the spray head body, and a supporting ring is fixedly mounted at the top of the annular groove. And a mounting groove is formed in the supporting ring, a rubber ring is fixedly mounted in the mounting groove, and an air bag is fixedly mounted in the annular groove. Through the arrangement of the rubber ring, when the threaded ring is rotated to be connected with the connector of the liquid supply equipment, the pressing plate moves to extrude the air bag at the bottom, air in the air bag enters the air conveying pipe, the extruded air enters the rubber ring through the air conveying pipe, the rubber ring is expanded, and then the liquid supply equipment is connected with the liquid supply equipment. And the rubber ring expands to seal a gap between the threaded ring and the connector, so that the sealing performance of the joint of the spray head assembly for circuit board spraying is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray heads, in particular to a spray head assembly for spraying circuit boards. Background Art

[0002] The nozzle assembly for circuit board spraying is an important component of the spraying equipment. It is mainly used to spray the paint evenly onto the circuit board to ensure the thickness and uniformity of the paint and improve the coating quality. The nozzle assembly can adapt to circuit boards of different shapes and sizes to meet different production needs. In circuit board production, the nozzle assembly is an indispensable part.

[0003] For example, the application number CN213161370U discloses an adjustable nozzle for a building sprayer, including a nozzle cap, a nozzle cylinder, and a flow control disc; the inner wall of the nozzle cap is clamped with the cylindrical groove on the nozzle cylinder; the flow control disc includes a fixed disc and a rotating disc; the fixed disc is fixed on the central inner wall of the nozzle cylinder; the rotating disc fits tightly with the fixed disc; the rotating disc cooperates with the annular groove on the inner wall of the nozzle cylinder and can rotate on the annular groove. The beneficial effect of this device is that it can control the flow rate of the paint sprayed by the sprayer, thereby improving the effect of the paint on the wall. And the device can be disassembled, because the one-piece structure is not easy to disassemble. Compared with the one-piece structure of the traditional sprayer nozzle, the detachable nozzle is easier to clean, ensuring the normal use of the sprayer.

[0004] However, the adjustable nozzle can control the flow rate of paint sprayed by the sprayer, but when the joint is not sealed well and there is a gap, the medium flowing inside the nozzle assembly can easily penetrate into the outside through the gap. Therefore, it is necessary to improve the sealing performance of the joint to prevent medium leakage.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a nozzle assembly for circuit board spraying is proposed. Utility Model Content

[0006] The utility model aims to provide a nozzle assembly for spraying circuit boards, so as to solve the problem of improving the sealing performance of the connection of the nozzle assembly for spraying circuit boards proposed in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a nozzle assembly for spraying circuit boards, comprising a nozzle body and a spray pipe fixedly connected to the bottom of the nozzle body, wherein a threaded ring is fixedly installed on the top of the nozzle body;

[0008] An annular groove is fixedly installed inside the nozzle body, a support ring is fixedly installed on the top of the annular groove, a mounting groove is arranged inside the support ring, a rubber ring is fixedly installed inside the mounting groove, and the rubber ring is hollow, and an air delivery pipe is fixedly connected to the bottom of the rubber ring;

[0009] An air bag is fixedly installed inside the annular groove, and the other end of the air delivery pipe is connected to the bottom end of the air bag. A pressure plate is fixedly installed on the top of the air bag, and a driving rod is fixedly installed on the top of the pressure plate.

[0010] Furthermore, a limiting hole corresponding to the driving rod is arranged at the top of the annular groove, and the driving rod passes through the inside of the limiting hole.

[0011] Furthermore, the top array of the pressure plate is fixedly connected with a pull-back spring, and the top of the pull-back spring is fixedly connected to the top of the inner wall of the annular groove.

[0012] Furthermore, a circulation groove is installed around the spray pipe, and the circulation groove is annular, and the circulation groove is fixed on the spray pipe by bolts.

[0013] Furthermore, the bottom of the circulation groove is connected in sequence with an air jet pipe, and the air jet pipe is located on one side of the spray pipe.

[0014] Furthermore, a connecting pipe is fixedly installed on the top of the circulation tank.

[0015] Furthermore, a concave groove is fixedly provided inside the nozzle body, and a filter plate is fixedly installed on the concave groove.

[0016] Furthermore, a micro fan is fixedly installed inside the concave groove, and one end of the connecting pipe is connected to the output end of the micro fan.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model provides a rubber ring. When the threaded ring is rotated to connect with the connector of the liquid supply device, after the threaded ring is completely rotated into the connector of the liquid supply device, the connector of the liquid supply device will apply pressure to the driving rod, thereby causing the driving rod to move. When the driving rod moves, it will drive the pressure plate to move synchronously. The movement of the pressure plate will squeeze the airbag at the bottom, thereby causing the air inside the airbag to enter the inside of the air pipe. The squeezed air will enter the inside of the rubber ring through the air pipe, causing the volume of the rubber ring to expand. The expansion of the rubber ring will seal the gap between the threaded ring and the connector, thereby preventing the flowing medium from penetrating through the gap to the outside to cause the sprayed paint to drip, thereby improving the sealing performance of the connection of the nozzle assembly for circuit board spraying.

[0019] 2. The utility model sets a micro fan to improve the efficiency of air-drying the coating after spraying. The micro fan is operated to compress the air inside the concave groove. The compressed air flows into the interior of the circulation groove through the connecting pipe, and then the flowing air is directed to one side of the spray pipe through the jet pipe. After the spray pipe sprays the coating, the wind will flow to the surface of the coating, thereby improving the efficiency of air-drying the coating and improving the practicality of the nozzle assembly for circuit board spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the support ring of the utility model;

[0022] Figure 3 Schematic diagram of the three-dimensional structure of the annular groove;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the concave groove.

[0024] In the figure: 1. Nozzle body; 11. Threaded ring; 12. Spray pipe; 2. Annular groove; 21. Support ring; 22. Mounting groove; 221. Rubber ring; 222. Air pipe; 23. Limiting hole; 24. Retracting spring; 25. Pressure plate; 251. Drive rod; 252. Air bag; 3. Circulation groove; 31. Jet pipe; 32. Connecting pipe; 4. Concave groove; 41. Filter plate; 42. Micro fan. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] like Figure 1 - Figure 3As shown, a nozzle assembly for spraying circuit boards includes a nozzle body 1 and a spray pipe 12 fixedly connected to the bottom of the nozzle body 1, a threaded ring 11 is fixedly installed on the top of the nozzle body 1, an annular groove 2 is fixedly installed inside the nozzle body 1, a support ring 21 is fixedly installed on the top of the annular groove 2, a mounting groove 22 is arranged inside the support ring 21, a rubber ring 221 is fixedly installed inside the mounting groove 22, and the rubber ring 221 is hollow, and an air delivery pipe 222 is fixedly connected to the bottom of the rubber ring 221, and the annular groove 21 is fixedly installed on the top of the annular groove 2. An air bag 252 is fixedly installed inside the groove 2, and the other end of the air delivery pipe 222 is connected to the bottom end of the air bag 252. A pressure plate 25 is fixedly installed on the top of the air bag 252, and a driving rod 251 is fixedly installed on the top of the pressure plate 25. The nozzle assembly for circuit board spraying is connected and installed with the liquid supply device through a threaded ring 11. When the threaded ring 11 is rotated to connect with the liquid supply device connector, after the threaded ring 11 is completely rotated into the liquid supply device connector, the liquid supply device connector will press the driving rod 2 51 applies pressure, which in turn causes the driving rod 251 to move. When the driving rod 251 moves, it drives the pressure plate 25 to move synchronously. The movement of the pressure plate 25 squeezes the airbag 252 at the bottom, so that the air inside the airbag 252 enters the interior of the air pipe 222. The squeezed air enters the interior of the rubber ring 221 through the air pipe 222, which causes the volume of the rubber ring 221 to expand. After the volume of the rubber ring 221 expands, the mounting groove 22 limits the rubber ring 221, which causes the rubber ring 221 to expand outward. The expansion of the rubber ring 221 seals the gap between the threaded ring 11 and the connector, thereby improving the sealing of the connection of the nozzle assembly for spraying the circuit board. The robot arm moves the position of the nozzle assembly for spraying the circuit board, so that the spray pipe 12 moves to the top of the circuit board to be sprayed with paint, and the liquid supply assembly provides paint. After the paint enters the interior of the nozzle body 1, the coating is sprayed on the circuit board through the spray pipe 12, thereby achieving the purpose of spraying a protective coating on the circuit board.

[0028] Furthermore, a limiting hole 23 corresponding to the driving rod 251 is provided at the top of the annular groove 2, and the driving rod 251 passes through the limiting hole 23. When the driving rod 251 moves, the limiting hole 23 limits and guides the driving rod 251, so that the driving rod 251 moves smoothly.

[0029] Furthermore, the top array of the pressure plate 25 is fixedly connected with a pull-back spring 24, and the top of the pull-back spring 24 is fixedly connected to the top of the inner wall of the annular groove 2. When pressure is no longer applied to the driving rod 251, the pressure plate 25 is no longer applied. The reset of the pull-back spring 24 will pull the pressure plate 25 to reset, and when the pressure plate 25 is reset, the airbag 252 and the driving rod 251 will be driven to reset.

[0030] Embodiment 2

[0031] like Figure 1 and Figure 4 As shown, the utility model proposes a nozzle assembly for circuit board spraying. Compared with the first embodiment, as another implementation of the utility model, a flow groove 3 is installed around the spray tube 12, and the flow groove 3 is annular. The flow groove 3 is fixed on the spray tube 12 by bolts. The spray tube 12 provides an installation space for the flow groove 3. The air flowing inside the flow groove 3 will flow to the outside through the injection pipe 31.

[0032] Furthermore, the bottom of the circulation slot 3 is connected in sequence with an air jet pipe 31, and the air jet pipe 31 is located on one side of the spray pipe 12. The length of the air jet pipe 31 is shorter than that of the spray pipe 12, and will not affect the work of the spray pipe 12 in spraying coating on the circuit board.

[0033] Furthermore, a connecting pipe 32 is fixedly installed on the top of the circulation groove 3, a concave groove 4 is fixedly arranged inside the nozzle body 1, a filter plate 41 is fixedly installed on the concave groove 4, the nozzle body 1 provides an installation space for the concave groove 4, and the filter plate 41 filters and purifies the air flowing into the concave groove 4.

[0034] Furthermore, a micro fan 42 is fixedly installed inside the concave groove 4, and one end of the connecting pipe 32 is connected to the output end of the micro fan 42. When the nozzle assembly for spraying the circuit board sprays the coating on the circuit board through the spray pipe 12, in order to improve the efficiency of air-drying the coating after spraying, the micro fan 42 is operated to compress the air inside the concave groove 4, and the compressed air will flow into the interior of the circulation groove 3 through the connecting pipe 32, and then the flowing air will flow to one side of the spray pipe 12 through the jet pipe 31. After the spray pipe 12 sprays the coating, the wind will flow to the surface of the coating, thereby improving the efficiency of air-drying the coating and improving the practicality of the nozzle assembly for spraying the circuit board.

[0035] Working principle: When using this circuit board spraying nozzle assembly, first, the circuit board spraying nozzle assembly is connected and installed with the liquid supply device through the threaded ring 11. When the threaded ring 11 is rotated to connect with the liquid supply device connector, after the threaded ring 11 is completely rotated into the liquid supply device connector, the liquid supply device connector will apply pressure to the drive rod 251, which will cause the drive rod 251 to move. When the drive rod 251 moves, it will drive the pressure plate 25 to move synchronously. The movement of the pressure plate 25 will squeeze the air bag 252 at the bottom, so that the air inside the air bag 252 enters the inside of the air supply pipe 222, and the squeezed air will enter through the air supply pipe 222. When the rubber ring 221 is inserted into the rubber ring 221, the volume of the rubber ring 221 will expand. After the volume of the rubber ring 221 expands, the mounting groove 22 limits the rubber ring 221, which will cause the rubber ring 221 to expand outward. The expansion of the rubber ring 221 will seal the gap between the threaded ring 11 and the connector, thereby improving the sealing of the connection of the nozzle assembly for spraying the circuit board. The robotic arm moves the position of the nozzle assembly for spraying the circuit board, and after the spray pipe 12 moves to the top of the circuit board to be sprayed with paint, the liquid supply assembly provides paint. After the paint enters the interior of the nozzle body 1, the coating is sprayed on the circuit board through the spray pipe 12, thereby achieving the purpose of spraying a protective coating on the circuit board.

[0036] Finally, when the circuit board spraying nozzle assembly sprays the coating on the circuit board through the spray tube 12, in order to improve the efficiency of air-drying the coating after spraying, the micro fan 42 is operated to compress the air inside the concave groove 4, and the compressed air will flow into the interior of the circulation groove 3 through the connecting tube 32, and then the flowing air will flow to one side of the spray tube 12 through the jet tube 31. After the spray tube 12 sprays the coating, the wind will flow to the surface of the coating, thereby improving the efficiency of air-drying the coating and improving the practicality of the circuit board spraying nozzle assembly.

[0037] This is the working principle of the nozzle assembly for circuit board spraying.

[0038] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A nozzle assembly for spraying a circuit board, comprising a nozzle body (1) and a spray pipe (12) fixedly connected to the bottom of the nozzle body (1), characterized in that: A threaded ring (11) is fixedly mounted on the top of the nozzle body (1); An annular groove (2) is fixedly installed inside the nozzle body (1), a support ring (21) is fixedly installed on the top of the annular groove (2), a mounting groove (22) is provided inside the support ring (21), a rubber ring (221) is fixedly installed inside the mounting groove (22), and the rubber ring (221) is hollow, and an air delivery pipe (222) is fixedly connected to the bottom of the rubber ring (221); An air bag (252) is fixedly mounted inside the annular groove (2), and the other end of the air delivery pipe (222) is connected to the bottom end of the air bag (252). A pressure plate (25) is fixedly mounted on the top of the air bag (252), and a driving rod (251) is fixedly mounted on the top of the pressure plate (25).

2. A nozzle assembly for spraying a circuit board according to claim 1, characterized in that: A limiting hole (23) corresponding to the driving rod (251) is provided at the top of the annular groove (2), and the driving rod (251) passes through the interior of the limiting hole (23).

3. A nozzle assembly for spraying a circuit board according to claim 2, characterized in that: The top array of the pressure plate (25) is fixedly connected to a pull-back spring (24), and the top of the pull-back spring (24) is fixedly connected to the top of the inner wall of the annular groove (2).

4. The nozzle assembly for spraying a circuit board according to claim 1, characterized in that: The spray pipe (12) is surrounded by a circulation groove (3), and the circulation groove (3) is annular. The circulation groove (3) is fixed on the spray pipe (12) by bolts.

5. A nozzle assembly for spraying a circuit board according to claim 4, characterized in that: The bottom of the circulation groove (3) is connected in sequence with an air injection pipe (31), and the air injection pipe (31) is located on one side of the spraying pipe (12).

6. A nozzle assembly for spraying a circuit board according to claim 5, characterized in that: A connecting pipe (32) is fixedly mounted on the top of the circulation groove (3).

7. The nozzle assembly for spraying a circuit board according to claim 1, characterized in that: A concave groove (4) is fixedly arranged inside the nozzle body (1), and a filter plate (41) is fixedly mounted on the concave groove (4).

8. The nozzle assembly for spraying a circuit board according to claim 7, characterized in that: A micro fan (42) is fixedly installed inside the concave groove (4), and one end of the connecting pipe (32) is connected to the output end of the micro fan (42).

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