Internal heating type semi-automatic soldering gun

Abstract

The utility model discloses an internal heating type semi-automatic soldering gun which comprises a gun body, a gun head is arranged at one end of the gun body, a cavity communicated with the gun head is arranged in the gun body, and a pushing and injecting system used for extruding liquid tin out of the gun head is arranged in the gun body. The injection system comprises a pushing tube and a pushing needle tube communicated with the pushing tube, and the pushing tube moves towards the pushing needle tube to enable the pushing needle tube to extend out of the gun head; a piston is movably connected to the interior of the pushing pipe; and a heating system which is communicated with the pushing pipe and is used for providing liquid tin for the pushing pipe is also arranged in the gun body. According to the internal heating type semi-automatic tin soldering gun, heating is conducted in the gun body, the pushing needle tube stretches out of the gun body in the using process, and high-temperature scalds caused in the tin soldering process can be reduced. The internal heating type semi-automatic tin soldering gun is convenient and simple to use, high in tin soldering precision and capable of effectively preventing a heated part from being in contact with an electronic element for a long time and burning the element.

Description

Technical Field

[0001] The utility model relates to the technical field of soldering guns, and more specifically to an internally heated semi-automatic soldering gun. Background Art

[0002] A soldering gun is a tool used for soldering, and is mainly used in the soldering process of printed circuit boards (PCBs). Its general working principle is to connect the tin bar with the solder gun head and place it on the surface of the part to be soldered. When the power is on, the high temperature generated by the connection between the tin bar and the solder gun head melts the tin bar, and the melted tin is placed on the part to be soldered. When the liquid tin metal cools and fixes, the soldering process is completed. General soldering guns are externally heated, and the high-temperature gun head of the solder gun is easy to accidentally touch and burn. At the same time, the tin bar needs to be heated separately for each soldering, which is difficult to operate and inconvenient to use. In addition, during the heating process of the tin bar, it needs to stay on the surface of the part to be soldered, which may cause the part to be damaged by long-term high temperature.

[0003] In response to the above technical problems, a Chinese invention patent with publication number CN 102950355 A discloses a liquid extrusion solder gun, which directly pushes the tin wire into the melting tube to turn it into high-temperature tin liquid, and then squeezes and sprays the tin liquid onto the workpiece through a propulsion mechanism. However, the tin nozzle head of the disclosed structure still has the risk of scalding the operator. At the same time, the hollow melting tube and the tin wire conduit are connected. Therefore, when the piston is squeezed, the tin liquid will flow back to the tin wire conduit and solidify, resulting in a technical problem that the tin wire conduit cannot be fed with wire. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides an internally heated semi-automatic soldering gun, which can reduce the risk of continuous high temperature damage to the workpiece during soldering and the risk of scalding for the operator.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is:

[0006] An internally heated semi-automatic soldering gun comprises a gun body, a gun head is provided at one end of the gun body, a cavity connected to the gun head is provided in the gun body, and a push injection system for squeezing liquid tin out of the gun head is provided inside the gun body; the push injection system comprises a push tube and a push needle tube connected thereto, the push tube moves toward the push needle tube so that the push needle tube extends to the outside of the gun head; a piston is movably connected inside the push tube, and the piston moves toward the push needle tube so that the liquid tin in the push needle tube is squeezed out of the push needle tube; a heating system connected to the push tube and used to provide liquid tin to the push tube is also provided inside the gun body.

[0007] The utility model discloses an internally heated semi-automatic soldering gun, wherein a push injection system and a heating system are arranged inside a gun body, wherein the heating system is used inside the gun body to provide liquid tin to the push injection system, and a piston is used to move toward a push needle tube. When in use, the push needle tube can be extended to the outside of the gun head. When the piston is not pushed, the push needle tube is inside the gun body, which will not cause damage to the workpiece to be welded under continuous high temperature conditions, and can prevent the operator from being scalded by the high temperature tin, especially reducing the risk of high temperature injury to people caused by the push needle tube.

[0008] Furthermore, one end of the piston away from the pushing needle tube is connected to a pushing column; the outside of the push tube close to the pushing column is connected to a first elastic member, and the other end of the first elastic member is connected to a pushing block, and the pushing block can move along the first elastic member and resist the pushing column; the pushing block compresses the first elastic member to push the push tube to move toward the side close to the gun head and make the push needle tube extend out of the gun head.

[0009] Furthermore, the heating system comprises a tin melting box, the tin melting box is arranged outside the pushing tube, a heating plate is arranged inside the tin melting box, a tin melting port is opened inside the fuse box, and the tin melting port is connected to the pushing tube.

[0010] Furthermore, the heating plate is electrically connected to a temperature control module having a temperature control adjustment switch, and the temperature control module is used to control the temperature of the heating plate. The principle of the temperature control module is to control the current by adjusting the temperature control adjustment switch, thereby changing the working power of the heating plate. It is a commonly used device in this field.

[0011] Preferably, the temperature control switch is arranged outside the gun body.

[0012] Preferably, the temperature control switch is also connected to an indicator light for indicating the switch state. Setting the indicator light can better remind the user that the machine is in the heating state, which is convenient for the user to use safely.

[0013] Furthermore, a feed port for feeding tin metal is provided on the upper part of the tin melting box, a sealing cover is provided on the feed port, and a tin wire conveying system for conveying tin metal from the feed port to the tin melting box is provided inside the gun body.

[0014] Furthermore, the tin wire transmission system includes a transmission motor, a pressure wheel and a tin wire transmission tube, the transmission motor is rotatably connected to the pressure wheel, the pressure wheel is arranged at one end of the tin wire transmission tube, and the rotation of the pressure wheel can drive the tin wire to move along the tin wire transmission tube; the other end of the tin wire transmission tube is arranged at the upper part of the feed port. The purpose of the tin wire transmission tube is to realize the transmission of the tin wire from one end of the pressure wheel to one end of the feed port. Those skilled in the art can actually arrange the shape of the tin wire transmission tube according to the size and shape of the gun body, that is, the shape of the tin wire transmission tube can be varied.

[0015] Preferably, the tin wire transmission system comprises a feed switch, and the feed switch is arranged outside the gun body.

[0016] Preferably, the feed switch is also connected to an indicator light for indicating the switch status.

[0017] Preferably, the gun body is a component of a heat-resistant material.

[0018] Preferably, the transmission motor is a micro DC motor.

[0019] Furthermore, the push tube and the push needle tube are made of high-temperature-resistant and tin-resistant metal material components, and the piston is made of a plastic high-temperature-resistant material component.

[0020] Preferably, the high temperature resistant and tin-non-stick metal material is steel.

[0021] Preferably, the plastic high temperature resistant material is polycrystalline alumina fiber.

[0022] Furthermore, a second elastic member is provided on a side of the outer portion of the pushing tube close to the pushing needle tube, and the second elastic member is connected to the inner side of the gun head.

[0023] Preferably, one end of the pushing tube is movably connected to the pushing needle tube.

[0024] Furthermore, the side wall of the push tube is provided with an observation window for observing the amount of tin metal in the push tube, the observation window is made of a high-temperature resistant transparent material, and the gun body is provided with an observation port at a position corresponding to the observation window.

[0025] Preferably, the high temperature resistant transparent material is high temperature resistant glass.

[0026] Furthermore, a sawtooth portion is provided on the pushing block, the sawtooth portion is rotatably connected to a gear set, the gear set is connected to a trigger sawtooth disposed outside the gun body, and pressing the trigger can drive the pushing block to move toward the direction of the pushing needle tube.

[0027] Preferably, the internally heated semi-automatic soldering gun further comprises a power source, and the power source is used to supply power to the heating system and the tin wire transmission system.

[0028] The beneficial effects of the utility model are:

[0029] (1) The internally heated semi-automatic soldering gun provided by the utility model is heated inside the gun body. When soldering is required, the tin metal is first heated to liquefy, and then the needle tube is pushed out of the gun body during use. This can reduce high temperature burns during soldering, especially reduce the risk of high temperature injury to people caused by pushing the needle tube; and there will be no problem of difficulty in adding tin wire.

[0030] (2) The internally heated semi-automatic soldering gun provided by the utility model is easy to use, can be operated with one hand, has high soldering precision, and can effectively prevent the heating part from contacting the electronic components for a long time and scalding the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional diagram of the internally heated semi-automatic soldering gun of the utility model;

[0032] Figure 2 The utility model is an internal cross-sectional view of the internal heating semi-automatic soldering gun.

[0033] Figure 3 The utility model is a cross-sectional view of the interior of the gun head of the internal heating semi-automatic soldering gun.

[0034] Figure 4 It is an enlarged schematic diagram of the components of the injection system and the heating system of the internally heated semi-automatic soldering gun of the utility model.

[0035] The accompanying drawings are marked as follows: 1 is a gun body; 11 is a gun head; 12 is a cavity; 13 is an observation port; 14 is a trigger; 2 is an injection system; 21 is a push tube; 22 is a push needle tube; 23 is a piston; 24 is a push column; 25 is a first elastic member; 26 is a push block; 261 is a serrated portion; 27 is a second elastic member; 28 is an observation window; 29 is a gear set; 3 is a heating system; 31 is a tin melting box; 32 is a tin melting port; 33 is a temperature control switch; 34 is an indicator light; 35 is a feed port; 4 is a tin wire conveying system; 41 is a transmission motor; 42 is a pressure wheel; 43 is a feed switch; 5 is a main power switch. DETAILED DESCRIPTION

[0036] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numerals. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. In order to make the content of the utility model easier to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model.

[0037] Example 1

[0038] The invention provides an internally heated semi-automatic soldering gun. Figure 1 , Figure 3 and Figure 4As shown, it comprises a gun body 1, one end of which is provided with a gun head 11, a cavity 12 in communication with the gun head 11 is provided in the gun body 1, and a push injection system 2 for squeezing liquid tin out of the gun head 11 is provided inside the gun body 1; the push injection system 2 comprises a push tube 21 and a push needle tube 22 in communication with the push tube 21. Preferably, one end of the push tube 21 is movably connected with the push needle tube 22, such as a threaded connection, so that the push needle tube 22 can be easily disassembled and replaced, and the push tube 21 moves toward the push needle tube 22 so that the push needle tube 22 can extend to the outside of the gun head 11. A piston 23 is movably connected inside the push tube 21, and the piston 23 squeezes the liquid tin from the push needle tube 22 close to the push needle tube 22; a heating system 3 in communication with the push tube 21 and used to provide liquid tin to the push tube 21 is also provided inside the gun body 1.

[0039] Preferably, the gun body 1 is a heat-resistant material component; as an optional solution, the push tube 21 and the push needle tube 22 are high-temperature resistant and non-sticky metal material components, and the piston 23 is a plastic high-temperature resistant material component. Preferably, the high-temperature resistant and non-sticky metal material is steel. Preferably, the plastic high-temperature resistant material is polycrystalline alumina fiber. The above materials are conventional materials in the field. Those skilled in the art can make conventional selections of materials to meet the material requirements of various components of solder, and do not involve improvements to the materials themselves.

[0040] As an optional solution, the piston 23 is connected to a push column 24 at one end away from the push needle tube 22; the push tube 21 is connected to a first elastic member 25 on the outside of the push column 24, and the other end of the first elastic member 25 is connected to a push block 26, and the push block 26 moves along the first elastic member 25 to abut against the push column 24; the push block 26 compresses the first elastic member 25 to push the push tube 21 to move closer to the gun head 11, and the push needle tube 22 extends out of the gun head 11. In order to increase the stability of the push tube 21 when it moves, a second elastic member 27 is provided on the outside of the push tube 21 near the push needle tube 22, and the second elastic member 27 is connected to the inner side of the gun head 11.

[0041] As an optional solution, the push block 26 is provided with a serrated portion 261, and the serrated portion 261 is rotatably connected to a gear set 29, and the gear set 29 is serratedly connected to a trigger 14 arranged outside the gun body 1. Pressing the trigger 14 can drive the push block 26 to move toward the push needle 22.

[0042] As an optional solution, the heating system 3 includes a tin melting box 31, the tin melting box 31 is arranged outside the push tube 21, a heating plate is arranged inside the tin melting box 31, and a tin melting port 32 is opened inside the fuse box, and the tin melting port 32 is connected to the push tube 21. Preferably, a high-temperature check valve is arranged in the tin melting port 32 to prevent the melted tin metal from flowing back from the push tube 21 to the tin melting box 31. As an optional solution, the heating plate is electrically connected to a temperature control module with a temperature control switch 33, and the temperature control module is used to control the temperature of the heating plate. Preferably, the temperature control switch 33 is arranged outside the gun body 1; preferably, the temperature control switch 33 is also connected to an indicator light 34 for indicating the switch status. As an optional solution, the internal heating semi-automatic soldering gun is provided with a power supply for each component that needs power supply, and preferably, the power supply is a movable power supply. As an optional solution, a main power switch 5 is also provided at the lower part of the gun body 1.

[0043] In the specific implementation process, when it is necessary to use the internal heating semi-automatic soldering gun, the power is turned on, the main power switch 5 is turned on, and then the temperature control adjustment switch 33 is turned on, so that the heating plate inside the molten tin box 31 is heated up, thereby melting the tin wire or other forms of tin metal inside it, and the tin metal flows into the push tube 21. At this time, the trigger 14 is pressed to drive the push block 26 to move toward the push needle tube 22; and the push needle tube 22 is extended out of the gun head 11, and then the push block 26 is continued to move until the push column 24 is abutted, and then the push column 24 moves to make the piston 23 move toward the push needle tube 22, and pressure is generated in the push tube 21, so that the liquid tin flows out from the push needle tube 22 to achieve soldering; after the soldering is completed, the trigger 14 is released, and the push needle tube 22 moves into the gun body 1 with the push tube 21, so that the push needle tube 22 is retracted into the gun body 1 to prevent burns, and the temperature control adjustment switch 33 is turned off, and the main power switch 5 is turned off.

[0044] The utility model internal heating type semi-automatic soldering gun arranges the injection system 2 and the heating system 3 inside the gun body 1, provides liquid tin to the injection system 2 through the heating system 3 inside the gun body 1, and uses the piston 23 to move close to the push needle tube 22. When in use, the push needle tube 22 can be extended to the outside of the gun head 11. When the piston 23 is not pushed, the push needle tube 22 is inside the gun body 1 to avoid burns caused by high temperature tin, especially to reduce the risk of high temperature injury caused by the push needle tube 22; and the problem of poor tin wire addition will not occur. The utility model provides an internal heating type semi-automatic soldering gun that is easy to use, can be operated with one hand, has high soldering precision, and can effectively prevent the heating part from contacting the electronic components for a long time and scalding the components.

[0045] Example 2

[0046] In order to further improve the efficiency of tin addition, Figure 2On the basis of Example 1, a feed port 35 for feeding tin metal is provided on the upper part of the tin melting box 31, and the feed port 35 is provided with a sealing cover. A tin wire conveying system 4 for conveying tin metal from the feed port 35 to the tin melting box 31 is provided inside the gun body 1.

[0047] As an optional solution. The tin wire transmission system 4 includes a transmission motor 41, a pressure wheel 42 and a tin wire transmission tube, the transmission motor 41 is rotatably connected to the pressure wheel 42, the pressure wheel 42 is arranged at one end of the tin wire transmission tube, and the rotation of the pressure wheel 42 can drive the tin wire to move along the tin wire transmission tube; the other end of the tin wire transmission tube is arranged at the upper part of the feed port 35. Preferably, the tin wire transmission system 4 includes a feed switch 43, and the feed switch 43 is arranged outside the gun body 1. Preferably, the feed switch 43 is also connected to an indicator light 34 for indicating the switch status. Preferably, the transmission motor 41 is a micro DC motor, which is small in size and high in efficiency, and can reduce the total weight of the solder gun.

[0048] In the specific implementation process, when tin metal needs to be added, only the sealing cover is opened, and the feed switch 43 is turned on, so that the pressure wheel 42 rotates and drives the tin wire transmission tube to move to the feed port 35, and at the same time, the temperature control adjustment switch 33 is kept open to allow the tin wire to continue to melt. After the amount of tin wire that needs to be added is reached, the sealing cover is closed to complete the tinning process.

[0049] Example 3

[0050] In order to monitor the amount of tin metal inside the push tube 21 in real time, based on Example 2, as an optional solution, Figure 1 The side wall of the push tube 21 is provided with an observation window 28 for observing the amount of tin metal in the push tube 21. The observation window 28 is made of a high temperature resistant transparent material that does not adhere to the tin metal in liquid state. The gun body 1 is provided with an observation port 13 at a position corresponding to the observation window 28. Preferably, the high temperature resistant transparent material is high temperature resistant glass.

[0051] With regard to the above embodiments, it should be noted that the specific models and specifications of the DC motor, heating plate, indicator light 34, etc. in the above embodiments 1-3 need to be selected and determined according to the actual specifications and requirements of the device, and the specific selection calculation method adopts the existing technology in the field. The principle of the above-mentioned equipment that needs power supply and the connection method with the power supply are clear and easy to implement for technical personnel in this field, so they will not be described in detail here.

[0052] The above description is only a preferred embodiment of the present utility model patent and does not constitute a limitation of the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. An internally heated semi-automatic soldering gun, characterized in that: The invention comprises a gun body (1), wherein a gun head (11) is provided at one end of the gun body (1), wherein a cavity (12) connected to the gun head (11) is provided inside the gun body (1), and wherein a push injection system (2) for squeezing liquid tin out of the gun head (11) is provided inside the gun body (1); wherein the push injection system (2) comprises a push tube (21) and a push needle tube (22) connected thereto, wherein the push tube (21) moves toward the push needle tube (22) so that the push needle tube (22) extends out of the gun head (11); wherein a piston (23) is movably connected inside the push tube (21), wherein the piston (23) moves toward the push needle tube (22) so that the liquid tin in the push needle tube (22) is squeezed out of the push needle tube (22); and wherein a heating system (3) connected to the push tube (21) and used for providing liquid tin to the push tube (21) is also provided inside the gun body (1).

2. The internally heated semi-automatic soldering gun according to claim 1, characterized in that: The piston (23) is connected to a push column (24) at one end away from the push needle tube (22); a first elastic member (25) is externally connected to a side of the push tube (21) close to the push column (24); the other end of the first elastic member (25) is connected to a push block (26); the push block (26) moves along the first elastic member (25) and can abut against the push column (24); the push block (26) compresses the first elastic member (25) to push the push tube (21) to move toward a side close to the gun head (11), and causes the push needle tube (22) to extend outside the gun head (11).

3. The internally heated semi-automatic soldering gun according to claim 1, characterized in that: The heating system (3) comprises a tin melting box (31), the tin melting box (31) being arranged outside the push tube (21), a heating plate being arranged inside the tin melting box (31), a tin melting opening (32) being opened inside the tin melting box (31), and the tin melting opening (32) being communicated with the push tube (21).

4. The internally heated semi-automatic soldering gun according to claim 3, characterized in that: The heating plate is electrically connected to a temperature control module having a temperature control adjustment switch (33), and the temperature control module is used to control the temperature of the heating plate.

5. The internally heated semi-automatic soldering gun according to claim 3, characterized in that: The tin melting box (31) is provided with a feed port (35) for feeding tin metal, the feed port (35) is provided with a sealing cover, and the gun body (1) is provided with a tin wire conveying system (4) for conveying tin metal from the feed port (35) to the tin melting box (31).

6. The internally heated semi-automatic soldering gun according to claim 5, characterized in that: The tin wire conveying system (4) comprises a transmission motor (41), a pressure wheel (42) and a tin wire transmission tube for accommodating the passage of the tin wire; the transmission motor (41) is rotatably connected to the pressure wheel (42); the rotation of the pressure wheel (42) can drive the tin wire to move along the tin wire transmission tube; the tin wire transmission tube is connected to the tin melting box (31).

7. The internally heated semi-automatic soldering gun according to claim 1, characterized in that: The push tube (21) and the push needle tube (22) are high-temperature resistant and tin-resistant metal material components, and the piston (23) is a plastic high-temperature resistant material component.

8. The internally heated semi-automatic soldering gun according to claim 1, characterized in that: A second elastic member (27) is provided on the outside of the pushing tube (21) on a side close to the pushing needle tube (22), and the second elastic member (27) is connected to the inside of the gun head (11).

9. The internally heated semi-automatic soldering gun according to claim 1, characterized in that: The side wall of the push tube (21) is provided with an observation window (28) for observing the amount of tin metal in the push tube (21); the observation window (28) is made of a high-temperature resistant transparent material; and the gun body (1) is provided with an observation port (13) at a position corresponding to the observation window (28).

10. The internally heated semi-automatic soldering gun according to claim 2, characterized in that: The push block (26) is provided with a sawtooth portion (261), the sawtooth portion (261) being rotatably connected to a gear set (29), the gear set (29) being sawtooth-connected to a trigger (14) disposed outside the gun body (1), and pressing the trigger (14) can drive the push block (26) to move in a direction close to the push needle tube (22).

Images