A welding head structure for a wave-soldering machine

Abstract

The utility model discloses a kind of welding head structures for wave-soldering machine, including feed pipe, the feed pipe is conical tubular structure, the upper end inside of feed pipe is fixedly connected with feed pipe, feed pipe upper end is circularly arrayed and is provided with inlet, and the outer ring surface upper end of feed pipe is provided with thread mouth, the inside surface of feed pipe is provided with mounting groove, and the inside of mounting groove is fixedly connected with electric heating plate, and the inside middle part of feed pipe is fixedly connected with spiral pipe, the middle part of spiral pipe is hollow structure, and the inlet of spiral pipe and the inlet provided on the upper end of feed pipe correspond to each other, the outer ring surface middle part of feed pipe is fixedly connected with the fixing frame of annular structure, and the upper surface of fixing frame is circularly arrayed and is provided with the screw hole corresponding with external fixed bolt, the welding head can be assisted to stir mix solder when using, and solder can be heated and kept warm, prevent solder cooling and affect welding effect, make the welding quality of welder more stable.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to a welding head structure for a wave soldering machine. Background Technology

[0002] Wave soldering refers to the process of spraying molten solder (lead-tin alloy) into a solder wave peak as required by design through an electric pump or electromagnetic pump. It can also be formed by injecting nitrogen into the solder bath. The printed circuit board with pre-loaded components passes through the solder wave peak to achieve mechanical and electrical connection between the solder ends or leads of the components and the pads of the printed circuit board.

[0003] Existing wave soldering machines often have welding heads with a hollow tubular structure, which can lead to uneven material ratios during material changes. Furthermore, the poor insulation of the welding head results in unstable temperatures of the ejected material, thus affecting the welding quality. To address this, we propose a welding head structure for wave soldering machines. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a welding head structure for a wave soldering machine. This welding head can assist in stirring and mixing the solder during use, and can heat and keep the solder warm to prevent the solder from cooling and affecting the welding effect, so as to make the welding quality of the welding machine more stable and effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding head structure for a wave soldering machine, comprising a feeding pipe, wherein the feeding pipe is a conical tubular structure, a feed pipe is fixedly connected to the upper end of the feeding pipe, the feed pipe has feed ports arranged in a circumferential array at the upper end of the feed pipe, and a threaded port is provided at the upper end of the outer ring surface of the feeding pipe, an installation groove is provided on the inner surface of the feeding pipe, and an electric heating plate is fixedly connected inside the installation groove, and a spiral tube is fixedly connected to the middle of the inner part of the feeding pipe, the middle part of the spiral tube is a hollow structure, and the feed port of the spiral tube corresponds to the feed port opened at the upper end of the feed pipe, a ring-shaped fixing frame is fixedly connected to the middle of the outer ring surface of the feeding pipe, and the upper surface of the fixing frame has screw holes arranged in a circumferential array corresponding to the external fixing bolts, and a temperature transmitter is fixedly connected to the middle of the lower surface of the feed pipe;

[0006] Wherein: the input end of the electric heating plate is electrically connected to the output end of the control terminal of the external wave soldering machine, and the temperature transmitter is bidirectionally electrically connected to the control terminal of the external wave soldering machine.

[0007] Furthermore, it also includes a connecting frame, which is fixedly connected to the lower outer ring side of the temperature transmitter, and the outer end of the connecting frame is fixedly connected to the lower end of the inner wall of the conveying pipe; the connecting frame can fix the lower end of the temperature transmitter, preventing the temperature transmitter from falling off and affecting the normal use of the welding head, thereby making the use of the welding head more stable.

[0008] Furthermore, it also includes an extrusion tube, which has a ring-shaped structure with arc-shaped structures at both the upper and lower ends, and is fixedly connected to the lower end of the feed tube. The extrusion tube can extrude and mix the solder to be discharged from the tube, while increasing the extrusion pressure of the solder, making the wave soldering machine more stable and convenient to use.

[0009] Furthermore, it also includes a heat insulation pad, which is fitted onto the lower end of the outer ring surface of the feed pipe, and the outer surface corners of the heat insulation pad are all rounded. The outer surface of the heat insulation pad is coated with a silicon carbide wear-resistant coating. The heat insulation pad can effectively prevent the solder temperature from dropping, thereby making the welding machine more stable in use.

[0010] Furthermore, the inner surface of the electric heating plate and the inner surface of the spiral tube are both electroplated with a nickel alloy corrosion-resistant layer; the nickel alloy corrosion-resistant layer can effectively extend the service life of the welding head, thereby making the welding machine more stable and convenient to use.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The welding head structure used in this wave soldering machine has the following advantages:

[0012] 1. This welding head can assist in stirring and mixing the solder during use, and can also heat and keep the solder warm to prevent the solder from cooling down and affecting the welding effect, thus making the welding quality of the welding machine more stable.

[0013] 2. The connecting bracket can fix the lower end of the temperature transmitter, preventing the temperature transmitter from falling off and affecting the normal use of the welding head, thus making the use of the welding head more stable.

[0014] 3. The extrusion tube can extrude and mix the solder to be extruded, while increasing the extrusion pressure of the solder, making the wave soldering machine more stable and convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure from the lower side view of this utility model.

[0018] In the diagram: 1. Feed pipe, 2. Threaded port, 3. Feed pipe, 4. Spiral pipe, 5. Electric heating plate, 6. Fixing frame, 7. Connecting frame, 8. Temperature transmitter, 9. Extrusion pipe, 10. Insulation pad. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This embodiment provides a technical solution: a welding head structure for a wave soldering machine, including a feeding pipe 1, which is a tapered tubular structure. A feeding pipe 3 is fixedly connected to the upper end of the feeding pipe 1. The upper end of the feeding pipe 3 has feeding ports arranged in a circular array. A threaded port 2 is opened on the upper end of the outer ring surface of the feeding pipe 1. An installation groove is opened on the inner surface of the feeding pipe 1. An electric heating plate 5 is fixedly connected inside the installation groove. A spiral tube 4 is fixedly connected to the middle of the inner part of the feeding pipe 1. The middle part of the spiral tube 4 is a hollow structure. The feeding port of the spiral tube 4 corresponds to the feeding port opened at the upper end of the feeding pipe. A ring-shaped fixing frame 6 is fixedly connected to the middle of the outer ring surface of the feeding pipe 1. The upper surface of the fixing frame 6 has screw holes arranged in a circular array corresponding to the external fixing bolts. A temperature transmitter 8 is fixedly connected to the middle of the lower surface of the feeding pipe 3.

[0021] Among them, the input end of the electric heating plate 5 is electrically connected to the output end of the control terminal of the external wave soldering machine, and the temperature transmitter 8 is bidirectionally electrically connected to the control terminal of the external wave soldering machine.

[0022] In this embodiment, a connecting frame 7 is also included. The connecting frame 7 is fixedly connected to the lower outer ring side of the temperature transmitter 8, and the outer end of the connecting frame 7 is fixedly connected to the lower end of the inner wall of the conveying pipe 1. The connecting frame 7 can fix the lower end of the temperature transmitter 8, preventing the temperature transmitter 8 from falling off and affecting the normal use of the welding head, thereby making the use of the welding head more stable.

[0023] In this embodiment, an extrusion tube 9 is also included. The extrusion tube 9 has a ring structure, and the middle of both the upper and lower ends of the extrusion tube 9 is a circular arc structure. The extrusion tube 9 is fixedly connected to the lower end of the inside of the feeding tube 1. The extrusion tube 9 can extrude and mix the solder to be discharged from the tube, and at the same time increase the extrusion pressure of the solder, making the use of the wave soldering machine more stable and convenient.

[0024] In this embodiment, a heat insulation pad 10 is also included. The heat insulation pad 10 is sleeved on the lower end of the outer ring surface of the material conveying pipe 1, and the outer surface corners of the heat insulation pad 10 are all rounded. The outer surface of the heat insulation pad 10 is sprayed with a silicon carbide wear-resistant coating. The heat insulation pad 10 can effectively prevent the solder temperature from dropping, thereby making the use of the welding machine more stable.

[0025] In this embodiment, the inner surface of the electric heating plate 5 and the inner surface of the spiral tube 4 are both electroplated with a nickel alloy corrosion-resistant layer; the nickel alloy corrosion-resistant layer can effectively extend the service life of the welding head, thereby making the welding machine more stable and convenient to use.

[0026] The working principle of the welding head structure for a wave soldering machine provided by this utility model is as follows: The feed pipe 1 is fixed by connecting to the external equipment through the threaded port 2, and then the fixing bracket 6 is fixed by the external clamp to achieve the effect of fixing the welding head. When the solder enters the welding head, it is first distributed through the feed pipe 1, and then mixed by the spiral tube 4 during the conveying process to make the quality of the solder more stable. During the solder conveying process, the electric heating plate 5 heats and keeps the solder warm to prevent the solder from cooling and affecting the welding quality. At the same time, the temperature transmitter 8 monitors the temperature of the solder and adjusts the heating power of the electric heating plate 5 to maintain the stability of the solder.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A welding head structure for a wave soldering machine, characterized in that: The system includes a conveying pipe (1), which is a tapered tubular structure. The upper end of the conveying pipe (1) is fixedly connected to a feed pipe (3). The upper end of the feed pipe (3) is provided with feed inlets in a circular array. The upper end of the outer ring surface of the conveying pipe (1) is provided with a threaded port (2). The inner surface of the conveying pipe (1) is provided with an installation groove. An electric heating plate (5) is fixedly connected inside the installation groove. The middle part of the conveying pipe (1) is fixedly connected to a spiral tube (4). The middle part of the spiral tube (4) is a hollow structure. The feed inlet of the spiral tube (4) corresponds to the feed inlet opened at the upper end of the feed pipe. The middle part of the outer ring surface of the conveying pipe (1) is fixedly connected to a ring-shaped fixing frame (6). The upper surface of the fixing frame (6) is provided with screw holes in a circular array corresponding to the external fixing bolts. The middle part of the lower surface of the feed pipe (3) is fixedly connected to a temperature transmitter (8). Wherein: the input end of the electric heating plate (5) is electrically connected to the output end of the control terminal of the external wave soldering machine, and the temperature transmitter (8) is bidirectionally electrically connected to the control terminal of the external wave soldering machine.

2. The welding head structure for a wave soldering machine according to claim 1, characterized in that: It also includes a connecting frame (7), which is fixedly connected to the lower outer ring side of the temperature transmitter (8), and the outer end of the connecting frame (7) is fixedly connected to the lower end of the inner wall of the conveying pipe (1).

3. The welding head structure for a wave soldering machine according to claim 1, characterized in that: It also includes an extrusion tube (9), which is a ring structure. The middle of both ends of the extrusion tube (9) is a circular arc structure, and the extrusion tube (9) is fixedly connected to the lower end of the conveying tube (1).

4. The welding head structure for a wave soldering machine according to claim 1, characterized in that: It also includes a heat insulation pad (10), which is fitted onto the lower end of the outer ring surface of the conveying pipe (1), and the outer surface corners of the heat insulation pad (10) are all rounded. The outer surface of the heat insulation pad (10) is coated with a silicon carbide wear-resistant coating.

5. The welding head structure for a wave soldering machine according to claim 1, characterized in that: The inner surface of the electric heating plate (5) and the inner surface of the spiral tube (4) are both electroplated with a nickel alloy corrosion-resistant layer.

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