Wave-soldering adjustable gas distribution device

Abstract

The utility model discloses a wave-soldering adjustable gas distribution device, and relates to the field of wave-soldering gas distribution. The adjustable gas distribution device for wave soldering comprises a first gas distribution pipe provided with a plurality of gas distribution holes in the axial direction and a second gas distribution pipe provided with a gas distribution through groove in the axial direction. An axial limiting groove is formed in the inner pipe wall of the first gas distribution pipe in the axial direction; the head of the second gas distribution pipe is fixedly provided with a limiting adjusting mechanism and is inserted into the first gas distribution pipe from the tail of the first gas distribution pipe; the limiting columnar block is fixedly arranged at the head part of the first gas distribution pipe; the limiting adjusting mechanism is matched with the axial limiting groove to limit the circumferential movement of the second gas distribution pipe; and the limiting adjusting mechanism is matched with the limiting columnar block to limit the axial movement of the second gas distribution pipe. The problem that the flow and the gas outlet area of the inert gas cannot be efficiently, economically and dynamically adjusted in an environment-friendly mode according to specific welding conditions can be solved.

Description

Technical Field

[0001] This application relates to the technical field of air distribution in wave soldering, and particularly to an adjustable air distribution device for wave soldering. Background Art

[0002] In the electronics manufacturing industry, wave soldering is a key step in connecting electronic components and circuit boards. During the traditional wave soldering process, problems such as solder oxidation, unstable welding quality, and solder joint bridging often occur. These problems are often related to the gas environment in the welding area, especially in welding operations carried out in an oxygen-containing environment.

[0003] To improve welding quality and reduce oxidation and other defects, inert gases (such as nitrogen, argon, etc.) are usually used to protect the welding area. In the existing technology, porous air diffuser pipes are widely used to provide a uniform flow of inert gas to the welding area. However, the existing porous air diffuser pipes have some limitations, such as a fixed gas flow rate, which cannot be adjusted according to specific welding conditions and requirements, resulting in waste or insufficient protection of inert gas.

[0004] The existing design of porous air diffuser pipes lacks an effective flow regulation mechanism, making it difficult to achieve the best gas protection effect in different welding applications. Although there are some gas supply systems with adjustable flow rates on the market, they are often complex in structure, high in cost, and not easily integrated into existing welding equipment. In addition, the fixed gas outlet area cannot provide enough flexibility to adapt to the rapidly changing production requirements when facing welding areas of different sizes and shapes. Summary of the Utility Model

[0005] In order to solve the problem in the existing technology that the flow rate and gas outlet area of inert gas cannot be dynamically adjusted efficiently, economically, and environmentally according to specific welding conditions, this application provides an adjustable air distribution device for wave soldering, and the specific solution is as follows:

[0006] The adjustable air distribution device for wave soldering includes: a first air distribution pipe axially provided with a plurality of air distribution holes and a second air distribution pipe axially provided with an air distribution groove; an axial limiting groove is provided along the inner wall of the first air distribution pipe in the axial direction, and a limiting columnar block is fixedly arranged at the head of the first air distribution pipe; a limiting adjustment mechanism is fixedly arranged at the head of the second air distribution pipe, and the head of the second air distribution pipe is inserted into the first air distribution pipe from the tail of the first air distribution pipe, and the second air distribution pipe forms a movable connection with the first air distribution pipe;

[0007] The limiting adjustment mechanism cooperates with the axial limiting groove to limit the circumferential movement of the second air distribution pipe; the limiting adjustment mechanism cooperates with the limiting columnar block to limit the axial movement of the second air distribution pipe; through the circumferential movement of the second air distribution pipe, at least part of the air distribution holes can be communicated with the air distribution groove to form an air outlet.

[0008] Preferably, the limit adjustment mechanism includes a fixing column fixedly arranged at the head of the second air distribution pipe. One end face of the fixing column is fixedly provided with a two-way limit block, and the other end face of the fixing column is provided with an elastic limit groove. An elastic limit block is connected in the elastic limit groove through a spring. The two-way limit block is in fit connection with the axial limit groove and can limit the circumferential movement of the second air distribution pipe. The elastic limit block can be clamped in the air distribution hole.

[0009] Preferably, the joint end face of the limit columnar block is provided with a cylindrical columnar groove, and the curved surface of the columnar groove is provided with a circumferential limit groove. The limit columnar block is fixedly connected with the head of the first air distribution pipe through the joint end face. The axial limit groove is communicated with the circumferential limit groove and forms a communication notch on the joint end face. The two-way limit block can enter the circumferential limit groove through the communication notch. When the two-way limit block is located in the circumferential limit groove, the second air distribution pipe can move circumferentially and its axial movement is restricted.

[0010] Preferably, the end face of the elastic limit block located outside the elastic limit groove is a curved surface.

[0011] Preferably, the end face of the elastic limit block located outside the elastic limit groove is a spherical surface.

[0012] Preferably, the surface of the two-way limit block that fits with the axial limit groove is a curved surface.

[0013] Preferably, the surface of the two-way limit block that fits with the axial limit groove is a spherical surface.

[0014] Preferably, the width of the air distribution through groove is not less than the aperture of the air distribution hole.

[0015] Preferably, the length of the second air distribution pipe is greater than the length of the first air distribution pipe.

[0016] Preferably, a plurality of anti-slip strips are arranged on the outer pipe wall of the second air distribution pipe near the tail.

[0017] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0018] 1. The second gas distribution pipe moves axially relative to the first gas distribution pipe, and the limit adjustment mechanism cooperates with the axial limit groove to restrict the circumferential movement of the second gas distribution pipe, thereby stably blocking the gas distribution holes, so as to realize the function of adjusting the inert gas outlet area; the second gas distribution pipe moves circumferentially relative to the first gas distribution pipe, and the limit adjustment mechanism cooperates with the limit columnar block to restrict the axial movement of the second gas distribution pipe, so that at least part of the gas distribution holes communicate with the gas distribution through groove to form an air outlet, and the size of the air outlet is controlled by the circumferential movement of the second gas distribution pipe, thereby realizing the adjustment of the inert gas flow rate; combining the second gas distribution pipe, the second gas distribution pipe, the limit adjustment mechanism and the limit columnar block can achieve the effect of dynamically adjusting the inert gas flow rate and outlet area efficiently, economically and environmentally according to specific welding conditions;

[0019] 2. By setting the bidirectional limit block, elastic limit block and fixed column, it is possible to limit the position when the second gas distribution pipe moves axially and circumferentially, ensuring the stability of the adjustment;

[0020] 3. The columnar groove of the limit columnar block can accommodate the limit adjustment mechanism, and the circumferential limit groove of the limit columnar block can cooperate with the limit adjustment mechanism to restrict the axial movement of the second gas distribution pipe to ensure the stability of the circumferential movement of the second gas distribution pipe.

[0021] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the embodiments of the present application. It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of a perspective of the adjustable gas distribution device for wave soldering of the present application.

[0024] Figure 2 It is a schematic structural diagram of the first gas distribution pipe of the present application.

[0025] Figure 3 It is a schematic structural diagram of the second gas distribution pipe of the present application.

[0026] Figure 4 It is a schematic structural diagram of another perspective of the adjustable gas distribution device for wave soldering of the present application.

[0027] Figure 5 It is a schematic structural diagram of the limit columnar block of the present application.

[0028] Figure 6 It is an installation schematic diagram of the adjustable gas distribution device for wave soldering of the present application.

[0029] In the figure: 1 - first gas distribution pipe; 11 - gas distribution holes; 12 - axial limit groove; 2 - second gas distribution pipe; 22 - gas distribution through groove; 21 - limit adjustment mechanism; 213 - two-way limit block; 211 - elastic limit block; 212 - fixed column; 23 - anti-slip strip; 3 - limit columnar block; 31 - columnar groove; 32 - circumferential limit groove; 33 - communication notch; 100 - conveyor belt; 101 - PCB board. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings of the present application. Obviously, the described embodiments of the present application are only partial embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0031] Referring in combination to Figure 1 and Figure 2 , the adjustable gas distribution device for wave soldering includes: a first gas distribution pipe 1 axially provided with a plurality of gas distribution holes 11 and a second gas distribution pipe 2 axially provided with a gas distribution through groove 22; an axial limit groove 12 is provided along the inner pipe wall of the first gas distribution pipe 1; a limit adjustment mechanism 21 is fixedly provided at the head of the second gas distribution pipe 2, and the head of the second gas distribution pipe 2 is inserted into the first gas distribution pipe 1 from the tail of the first gas distribution pipe 1, and the second gas distribution pipe 2 and the first gas distribution pipe 1 form a movable connection relationship; a limit columnar block 3 is fixedly provided at the head of the first gas distribution pipe 1.

[0032] Referring in combination to Figure 2 and Figure 3 , the limit adjustment mechanism 21 cooperates with the axial limit groove 12 to limit the circumferential movement of the second gas distribution pipe 2; the limit adjustment mechanism 21 cooperates with the limit columnar block 3 to limit the axial movement of the second gas distribution pipe 2; through the circumferential movement of the second gas distribution pipe 2, the gas distribution holes 11 and the gas distribution through groove 22 can be at least partially communicated to form an air outlet.

[0033] Referring in combination to Figure 3 and Figure 4, the position-limiting and adjusting mechanism 21 includes a fixing column 212 fixedly arranged at the head of the second air distribution pipe 2. One end face of the fixing column 212 is fixedly provided with a bidirectional position-limiting block 213, and the other end face of the fixing column 212 is provided with an elastic position-limiting groove. An elastic position-limiting block 211 is connected in the elastic position-limiting groove through a spring. The bidirectional position-limiting block 213 is in fit connection with the axial position-limiting groove 12 and can limit the circumferential movement of the second air distribution pipe 2. The elastic position-limiting block 211 can be clamped in the air distribution hole 11.

[0034] Refer to Figure 5 , the joint end face of the position-limiting columnar block 3 is provided with a cylindrical columnar groove 31. The curved surface of the columnar groove 31 is provided with a circumferential position-limiting groove 32. The position-limiting columnar block 3 is fixedly connected with the head of the first air distribution pipe 1 through the joint end face. The axial position-limiting groove 12 is communicated with the circumferential position-limiting groove 32 and forms a communication notch 33 at the joint end face. The bidirectional position-limiting block 213 can enter the circumferential position-limiting groove 32 through the communication notch 33. When the bidirectional position-limiting block 213 is located in the circumferential position-limiting groove 32, the second air distribution pipe 2 can move circumferentially and its axial movement is restricted.

[0035] Specifically, the end face of the elastic position-limiting block 211 located outside the elastic position-limiting groove is a curved surface. In this embodiment, the end face of the elastic position-limiting block 211 located outside the elastic position-limiting groove is a spherical surface.

[0036] Specifically, the surface of the bidirectional position-limiting block 213 that fits with the axial position-limiting groove 12 is a curved surface. In this embodiment, the surface of the bidirectional position-limiting block 213 that fits with the axial position-limiting groove 12 is a spherical surface.

[0037] Specifically, in this embodiment, the width of the air distribution through groove 22 is not less than the aperture of the air distribution hole 11.

[0038] Specifically, in this embodiment, the length of the second air distribution pipe 2 is greater than the length of the first air distribution pipe 1.

[0039] Specifically, in this embodiment, a plurality of anti-slip strips 23 are arranged on the outer pipe wall of the second air distribution pipe 2 near the tail.

[0040] Refer to Figure 6 , the adjustable air distribution device for wave soldering is usually installed below the conveyor belt 100 of the wave soldering equipment along the width direction of the wave soldering equipment and is usually located around the welding area. The PCB board 101 is conveyed by the conveyor belt 100 to the welding area for welding. The adjustable air distribution device for wave soldering adjusts the flow rate and the air outlet area of the released inert gas to protect the welding of the PCB board 101. Figure 6 The wave soldering equipment shown in [[ID=]] is a double-wave soldering equipment, so usually two adjustable air distribution devices for wave soldering are provided.

[0041] There are mainly two adjustment methods for the adjustable gas distribution device of wave soldering in this embodiment. The first adjustment method relies on the second gas distribution pipe 2 to move axially to block the gas distribution holes 11, so that the gas flows out from the unblocked gas distribution holes 11, thereby controlling the gas outlet area in the width direction of the wave soldering equipment, that is, the width direction of the conveyor belt 100. When the PCB board is smaller or the devices to be soldered are concentrated in a specific area, adjusting through this method can release inert gas more targeted, so it is relatively economical and more environmentally friendly. When adjusting in this adjustment method, the bidirectional limit block 213 cooperates with the axial limit groove 12 to limit the circumferential movement of the second gas distribution pipe 2 and ensure the stability of the axial movement of the second gas distribution pipe 2. At the same time, the elastic limit block 211 can be clamped in the gas distribution hole 11 and can expand and contract in the elastic limit groove. Therefore, the elastic limit can play a certain axial limit role for the second gas distribution pipe 2 while not affecting the axial movement of the second gas distribution pipe 2. When the second gas distribution pipe 2 moves axially, the gas distribution through groove 22 does not coincide with the gas distribution hole 11, that is, the gas distribution through groove 22 is not connected to the gas distribution hole 11, and the second gas distribution pipe 2 can block the gas distribution hole 11.

[0042] The second adjustment method relies on the second gas distribution pipe 2 to move circumferentially. The second gas distribution pipe 2 is fully inserted into the first gas distribution pipe 1, and the bidirectional limit block 213 enters the circumferential limit groove 32. At this time, since the elastic limit block 211 can expand and contract, the elastic limit block 211 is also located in the circumferential limit groove 32. The bidirectional limit block 213 and the elastic limit block 211 cooperate with the circumferential limit groove 32 to enable the second gas distribution pipe 2 to move circumferentially but the axial movement is restricted, ensuring the stability of the circumferential movement of the second gas distribution pipe 2. The circumferential movement of the second gas distribution pipe 2 changes the position of the gas distribution through groove 22, so that the gas distribution through groove 22 can at least partially coincide with the gas distribution hole 11 to form a gas outlet area, that is, the gas distribution through groove 22 can be connected to the gas distribution hole 11. By the circumferential movement of the second gas distribution pipe 2, the size of the gas outlet area can be changed, so as to adjust the flow rate of inert gas dynamically according to the welding conditions in real time. Controlling the flow rate of inert gas according to the actual welding requirements can ensure the welding effect while being more economical and environmentally friendly.

[0043] In summary, according to this embodiment, the problem of dynamically adjusting the flow rate of inert gas and the gas outlet area efficiently, economically and environmentally friendly according to specific welding conditions can be solved.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0045] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of this application and its equivalent technologies, this application is also intended to cover these changes and modifications.

Claims

1. Adjustable gas distribution device for wave soldering, characterized in that, Including: A first air distribution pipe axially provided with a plurality of air distribution holes and a second air distribution pipe axially provided with an air distribution groove; an axial limiting groove is axially provided on the inner pipe wall of the first air distribution pipe, and a limiting columnar block is fixedly arranged at the head of the first air distribution pipe; a limiting and adjusting mechanism is fixedly arranged at the head of the second air distribution pipe, the head of the second air distribution pipe is inserted into the first air distribution pipe from the tail of the first air distribution pipe, and the second air distribution pipe forms a movable connection with the first air distribution pipe; The limiting and adjusting mechanism cooperates with the axial limiting groove to limit the circumferential movement of the second air distribution pipe; the limiting and adjusting mechanism cooperates with the limiting columnar block to limit the axial movement of the second air distribution pipe; through the circumferential movement of the second air distribution pipe, at least part of the air distribution holes and the air distribution groove can be communicated to form an air outlet.

2. The adjustable gas distribution device for wave soldering according to claim 1, wherein The limiting and adjusting mechanism includes a fixing column fixedly arranged at the head of the second air distribution pipe, a bidirectional limiting block is fixedly arranged on one end face of the fixing column, an elastic limiting groove is arranged on the other end face of the fixing column, an elastic limiting block is connected in the elastic limiting groove through a spring, the bidirectional limiting block is connected with the axial limiting groove in a matching manner and can limit the circumferential movement of the second air distribution pipe, and the elastic limiting block can be clamped in the air distribution hole.

3. The adjustable gas distribution device for wave soldering according to claim 2, wherein A cylindrical columnar groove is arranged on the joint end face of the limiting columnar block, a circumferential limiting groove is arranged on the curved surface of the columnar groove, the limiting columnar block is fixedly connected with the head of the first air distribution pipe through the joint end face, the axial limiting groove is communicated with the circumferential limiting groove and forms a communication notch on the joint end face, and the bidirectional limiting block can enter the circumferential limiting groove through the communication notch.

4. The adjustable gas distribution device for wave soldering according to claim 2, wherein The end face of the elastic limiting block located outside the elastic limiting groove is a curved surface.

5. The adjustable gas distribution device for wave soldering according to claim 4, wherein The end face of the elastic limiting block located outside the elastic limiting groove is a spherical surface.

6. The adjustable gas distribution device for wave soldering according to claim 2, wherein, The surface of the bidirectional limiting block in contact with the axial limiting groove is a curved surface.

7. The adjustable gas distribution device for wave soldering according to claim 6, characterized in that, The surface of the bidirectional limiting block in contact with the axial limiting groove is a spherical surface.

8. The adjustable gas distribution device for wave soldering according to any one of claims 1 to 7, characterized in that, The width of the air distribution groove is not less than the aperture of the air distribution hole.

9. The adjustable gas distribution device for wave soldering according to any one of claims 1 to 7, characterized in that, The length of the second air distribution pipe is greater than the length of the first air distribution pipe.

10. The adjustable gas distribution device for wave soldering according to any one of claims 1 to 7, characterized in that, A plurality of anti-slip strips are arranged on the outer pipe wall of the second air distribution pipe near the tail.

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