A solder joint protection device

Abstract

The present invention provides a welding spot protection device, including a mesh stretching machine, the mesh stretching machine is provided with a base, a mesh stretching unit, a welding gun and a bracket, the welding gun is installed on the bracket, and also includes a liquid spray nozzle and an air nozzle, wherein the liquid spray nozzle is used to spray coating liquid, and the air nozzle is used to spray inert gas, and the outlet end of the liquid spray nozzle or the air nozzle faces the welding position of the welding gun. The welding spot protection device is provided with a liquid spray nozzle and an air nozzle on the mesh of the mesh stretching machine, and the air nozzle is used to spray inert gas for protection during welding, and the liquid spray nozzle is used to spray coating liquid toward the welding point after welding to form a protective coating, thereby improving welding firmness and extending the service life of the mask plate.

Description

Technical Field

[0001] The invention relates to the technical field of mask plate welding devices, and in particular to a welding point protection device. Background Art

[0002] In the manufacturing process of precision metal mask plates, a mesh stretching machine is needed, including a base, a bracket, a mesh stretching unit and a welding gun. The welding gun is generally installed on the bracket and moves with the bracket. The frame is supported by the base, and the mask plate is stretched with the mesh stretching unit and placed on the frame. The welding gun is fixed by welding. The problem is that the welding point is not firm, the mask plate is easily separated from the frame, and the service life is short, which needs to be improved. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a solder joint protection device to solve the above problems.

[0004] The technical solution of the present invention is:

[0005] A welding spot protection device comprises a mesh stretching machine, which comprises a base, a mesh stretching unit, a welding gun and a bracket. The welding gun is installed on the bracket and further comprises a liquid spray nozzle and an air nozzle. The liquid spray nozzle is used to spray coating liquid, and the air nozzle is used to spray inert gas. The outlet end of the liquid spray nozzle or the air nozzle faces the welding position of the welding gun.

[0006] The welding point protection device adds a liquid spray nozzle and an air nozzle to the mesh of the mesh stretching machine. During the welding process, the air nozzle sprays inert gas for protection. After welding, the liquid spray nozzle sprays coating liquid toward the welding point to form a protective coating, thereby improving the welding firmness and extending the service life of the mask plate.

[0007] Furthermore, the liquid spray nozzle and the air spray nozzle are mounted on the bracket and move with the bracket, thereby simplifying the structure.

[0008] Furthermore, it also includes a mounting seat and a hard first pipe, a second pipe and a branch pipe. The first pipe and the second pipe are fixed on the bracket through the mounting seat. The branch pipe is fixed on the first pipe and the second pipe. The end of each branch pipe is connected to a liquid spray nozzle or an air nozzle.

[0009] Liquid or gas is transported through a pipeline, and the other end of the pipeline is connected to an inert gas storage tank or a coating liquid storage tank.

[0010] Furthermore, the liquid spray nozzle has the same structure as the air jet nozzle, both of which include a first cylinder and a second cylinder, wherein the outer periphery of the second cylinder is threaded, and the corresponding inner wall of the first cylinder cavity is threaded, and a caliber adjustment mechanism is installed at the outlet of the first cylinder cavity, including an elastic membrane layer, a fastening ring, and bolts. The elastic membrane layer is cylindrical and built into the outlet end of the first cylinder cavity, and its two ends are respectively fixed to the inner wall of the cavity at the outlet of the first cylinder cavity by fastening rings and bolts, and an oil inlet hole is opened on the inner wall of the first cylinder cavity, and the oil inlet hole is connected to the space surrounded by the elastic membrane layer and the inner wall of the cavity.

[0011] In this embodiment, the structures of the liquid spray nozzle and the air jet nozzle are improved, and oil is injected through the oil inlet hole to cause the elastic membrane layer to expand to different degrees. The size of the caliber is adjusted to adjust the amount of liquid or air discharged, making it more convenient to use.

[0012] Furthermore, the first cylinder cavity is stepped, the tail end of the elastic membrane layer extends to the first step surface, and the head end of the elastic membrane layer extends to the peripheral wall at the outlet of the first cylinder, so as to facilitate the fixing of the elastic membrane layer.

[0013] Furthermore, an annular groove is opened on the secondary step surface of the first cylinder and a sealing ring is embedded therein, and an annular groove is opened on the end of the second cylinder correspondingly.

[0014] Both ends of the sealing ring are respectively embedded in the ring groove to improve the sealing performance.

[0015] Furthermore, it also includes a support plate, the first pipeline and the second pipeline are hard, the branch pipe is a hose and supported by the support plate, each support plate is rotatably installed on the first pipeline or the second pipeline, and the liquid spray nozzle or the air spray nozzle is rotatably connected to the support plate.

[0016] In this embodiment, the branch pipe is changed to a soft one and supported by a support plate, and the liquid spray nozzle and the air jet nozzle are rotatably connected to the support plate to adjust the direction and position.

[0017] Furthermore, the peripheral wall of the inlet end of the first cylinder is radially extended to form an eaves portion, and ear plates are arranged on the eaves portion. The ear plates are connected to the support plates by bolts, and the structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 : A top view of the structure of the present invention in Example 1;

[0019] Figure 2 : A front view of the structure of the present invention in Example 1;

[0020] Figure 3 : The cross-sectional structure diagram of the liquid spray nozzle;

[0021] Figure 4 : Mask plate and frame welding structure diagram;

[0022] In the figure: 1. base; 2. net stretching unit; 3. welding gun; 4. bracket; 5. mask plate; 6. mounting base; 7. first pipeline; 8. branch pipe; 9. support plate; 10. liquid spray nozzle; 11. air nozzle; 12. second pipeline; 13. frame; 14. welding point; 101. first cylinder; 102. second cylinder; 103. elastic membrane layer; 104. fastening ring; 105. oil inlet hole; 106. sealing ring; 107. eaves; 108. ear plate; 109. bolt. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0024] Example 1

[0025] refer to Figure 1 , Figure 2 , Figure 4 The welding spot protection device includes a mesh stretching machine, which has a base 1, a mesh stretching unit 2, a welding gun 3 and a bracket 4. The welding gun is installed on the bracket and moves with the bracket. In this embodiment, the bracket also includes a mounting seat and a first pipe, a second pipe and a branch pipe made of metal. The first pipe and the second pipe are fixed to the bracket through a mounting seat 6. The first pipe 7 and the second pipe 12 are relatively fixed with a branch pipe 8. The end of the branch pipe is adjacent to the welding gun head, and a liquid spray nozzle 10 is installed at the end of the branch pipe on the first pipe, and an air nozzle 11 is fixed at the end of the branch pipe on the second pipe. The outlets of the liquid spray nozzle and the air nozzle are facing the welding position of the welding gun. In this embodiment, the first pipe is connected to an external coating liquid storage tank, and the second pipe is connected to an external inert gas storage tank.

[0026] When in use, a frame 13 is placed on the base, the mesh stretching unit opens the mask plate 5 and places it on the frame, the bracket drives the welding gun to move, and the gas nozzle sprays inert gas protection during welding with the welding gun. After welding, the liquid spray nozzle sprays coating liquid onto the welding point 14 to form a protective coating.

[0027] Example 2

[0028] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 Compared with Example 1, in this embodiment, the first pipe 7 and the second pipe 12 are made of metal, and the branch pipe 8 is made of a hose, such as rubber material. Ear plates are fixed on the first and second pipes, and the support plate is hinged by bolts to support the hose with the support plate 9, such as by rope wrapping or gluing.

[0029] In this embodiment, the liquid spray nozzle and the air jet nozzle have the same structure, both of which include a first barrel 101 and a second barrel 102, wherein the outer periphery of the second barrel is threaded, and the corresponding inner wall of the inlet cavity of the first barrel is threaded, and the first barrel and the second barrel are threadedly engaged to form a liquid spray nozzle or an air jet nozzle; in this example, a caliber adjustment mechanism is installed at the outlet of the first barrel cavity, including an elastic membrane layer 103, a fastening ring 104, and a bolt. The elastic membrane layer is cylindrical and built into the outlet end of the first barrel cavity. The first barrel cavity is a two-stage stepped type, the tail end of the elastic membrane layer extends to the first step surface, and the head end of the elastic membrane layer extends to the peripheral wall of the first barrel outlet. The fastening ring is pressed and screwed in to fix it, and an oil inlet hole 105 is opened on the inner wall of the first barrel cavity, and the oil inlet hole is connected to the space surrounded by the elastic membrane layer and the inner wall of the cavity. The elastic membrane layer is expanded to different degrees by oil injection to change the caliber, and the elastic membrane layer is made of rubber.

[0030] In this embodiment, a ring groove is opened on the secondary step surface of the first cylinder and a sealing ring 106 is embedded therein. A corresponding ring groove is opened on the end of the second cylinder. When the first cylinder is connected to the second cylinder, both ends of the sealing ring are respectively embedded in the ring grooves to improve the sealing performance.

[0031] In this embodiment, the peripheral wall of the inlet end of the first cylinder radially extends outward to form a flange portion 107, on which ear plates 108 are arranged opposite to each other. The ear plates are connected to the support plates by bolts 109 to form a hinge to adjust the direction.

[0032] When in use, oil is injected through the oil inlet hole to make the elastic membrane layer expand to different degrees, and the size of the caliber is adjusted to adjust the amount of liquid or gas output. At the same time, the position of the support plate can be adjusted to change the position of the liquid spray nozzle or the air jet nozzle, and the liquid spray nozzle and the air jet nozzle can be rotated to adjust the direction, which is more convenient to use.

[0033] Of course, the above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the present invention.

Claims

1. A welding spot protection device, comprising a mesh stretching machine, the mesh stretching machine having a base, a mesh stretching unit, a welding gun and a bracket, the welding gun being mounted on the bracket, characterized in that: It also includes a liquid spray nozzle and an air nozzle, wherein the liquid spray nozzle is used to spray coating liquid, and the air nozzle is used to spray inert gas, and the outlet end of the liquid spray nozzle or the air nozzle faces the welding position of the welding gun; The liquid spray nozzle has the same structure as the air jet nozzle, both of which include a first cylinder and a second cylinder, wherein the outer periphery of the second cylinder is threaded, and the corresponding inner wall of the first cylinder cavity is threaded, and a caliber adjustment mechanism is installed at the outlet of the first cylinder cavity, including an elastic membrane layer, a fastening ring, and bolts. The elastic membrane layer is cylindrical and built into the outlet end of the first cylinder cavity, and its two ends are respectively fixed to the inner wall of the cavity at the outlet of the first cylinder cavity by fastening rings and bolts, and an oil inlet hole is opened on the inner wall of the first cylinder cavity, and the oil inlet hole is connected to the space surrounded by the elastic membrane layer and the inner wall of the cavity.

2. A solder joint protection device according to claim 1, characterized in that: The liquid spray nozzle and the air spray nozzle are installed on the bracket.

3. A solder joint protection device according to claim 2, characterized in that: It also includes a mounting seat and a hard first pipe, a second pipe and a branch pipe. The first pipe and the second pipe are fixed on the bracket through the mounting seat. The branch pipe is fixed on the first pipe and the second pipe. The end of each branch pipe is connected to a liquid spray nozzle or an air jet nozzle.

4. A solder joint protection device according to claim 1, characterized in that: The cavity of the first cylinder is stepped, the tail end of the elastic membrane layer extends to the first step surface, and the head end of the elastic membrane layer extends to the peripheral wall at the outlet of the first cylinder.

5. A solder joint protection device according to claim 4, characterized in that: An annular groove is opened on the secondary step surface of the first cylinder and a sealing ring is embedded therein, and an annular groove is opened on the corresponding end of the second cylinder.

6. A solder joint protection device according to claim 1, characterized in that: It also includes a support plate. The first pipeline and the second pipeline are hard. The branch pipe is a hose and supported by the support plate. Each support plate is rotatably installed on the first pipeline or the second pipeline. The liquid spray nozzle or the air spray nozzle is rotatably connected to the support plate.

7. A solder joint protection device according to claim 6, characterized in that: The peripheral wall of the inlet end of the first cylinder body is radially extended to form an eaves portion, and ear plates are arranged on the eaves portion, and the ear plates are connected to the support plates by bolts.

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