Integrated threaded heating core

Abstract

The utility model discloses an integrated threaded heating core, and belongs to the technical field of welding devices. An integrated threaded heating core comprises a first metal tube and a second metal tube, the first metal tube is divided into a first connecting part, a heating part and a second connecting part, a spiral groove is formed in the heating part, the depth of the spiral groove is equal to the wall thickness of the heating part, and the length of the first connecting part is larger than that of the second connecting part. The second metal tube is electrically connected with the second connecting part, and the first connecting part and the second metal tube are electrically connected with positive and negative electrodes of the power supply respectively. A first conductive and high-temperature-resistant metal tube is processed, a spiral groove is formed in a heating part, the cross sectional area of the heating part is reduced, the resistance is increased, and a first connecting part and a second connecting part which are different in length are reserved on the two sides of the heating part and used for being connected with a power source, so that the reliability of connection between the heating part and a conductive structure is improved; the service life is greatly prolonged, the manufacturing process is simpler, and the heating core with smaller size can be manufactured.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, and more specifically, to an integrated threaded heating core. Background Technology

[0002] Many electric heating elements nowadays use resistance wires for heating. The resistance wires are directly connected to the power cord. When operating at high temperatures, the connection between the power cord and the resistance wire is prone to poor contact, overheating, oxidation, and burnout, severely damaging the heating element and affecting its lifespan.

[0003] A search revealed a patent document with publication number CN104646787A that discloses a soldering iron tip. The sensing wire of this device is in direct contact with the surface of the soldering tip, and the temperature collected is close to the actual temperature of the soldering tip. It also has a fast temperature response speed. The temperature sensing part is integrated with the heating part of the heating wire, which enables the entire soldering iron tip to be miniaturized.

[0004] The above-mentioned device energizes the heating wire by connecting it to the ends of the first and second metal tubes. This method of energizing the heating wire is affected by the connection method, which can lead to problems such as poor contact, overheating, oxidation, and burnout at the connection point, thus reducing the service life of the heating core. In order to increase the service life of the heating core, we propose an integrated threaded heating core. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this application is to provide an integrated threaded heating core to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] This application is achieved through the following technical solution:

[0009] An integrated threaded heating core includes a first metal tube and a second metal tube. The first metal tube is divided into a first connecting part, a heating part, and a second connecting part. The heating part has a spiral groove with a depth equal to the wall thickness of the heating part. The length of the first connecting part is greater than the length of the second connecting part. The second metal tube is electrically connected to the second connecting part. The first connecting part and the second metal tube are respectively electrically connected to the positive and negative terminals of a power supply.

[0010] As an optional solution to the technical solution of this application, the second metal tube is sleeved on the outside of the first metal tube.

[0011] As an optional solution to the technical solution in this application, the second metal tube and the first metal tube are fitted with a clearance.

[0012] As an optional solution to the technical solution of this application, the second connecting part is inserted into and fitted with the second metal tube.

[0013] As an optional solution to the technical solution of this application, the end of the second metal tube is provided with a slot, and the slot is inserted into the second connecting part.

[0014] As an optional solution to the technical solution in this application, the spiral groove is made by laser cutting or mechanical cutting.

[0015] As an optional solution to the technical solution of this application, at least one end of the second metal tube is provided in a bundle shape.

[0016] As an optional solution to the technical solution in this application, the surface of the first metal tube is coated with a high-temperature resistant insulating coating.

[0017] As an optional solution to the technical solution in this application, a high-temperature resistant insulating tube is sleeved on the outside of the first metal tube.

[0018] As an optional solution to the technical solution in this application, the second connecting part is welded and fixed to the second metal pipe.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] This application processes a first metal tube with conductivity and high temperature resistance to form a spiral groove in the heating part. By reducing the cross-sectional area of ​​the heating part, the resistance is increased. The heating part is also provided with first and second connecting parts of different lengths on both sides for connecting the power supply. This increases the reliability of the connection between the heating part and the conductive structure, greatly extends the service life, and simplifies the manufacturing process, enabling the production of a smaller heating core. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an integrated threaded heating core;

[0023] Figure 2 A schematic diagram of the first metal tube structure of an integrated threaded heating core;

[0024] Figure 3 This is a schematic diagram of a second metal tube structure with an integrated threaded heating core;

[0025] Figure 4 This is a schematic diagram of the internal structure of an integrated threaded heating element;

[0026] In the figure: 1. First metal tube; 2. Second metal tube; 201. Slot; 101. First connecting part; 102. Heating part; 1021. Spiral groove; 103. Second connecting part. Detailed Implementation

[0027] The technical solution of this application will now be clearly and completely described in conjunction with the accompanying drawings.

[0028] Please see Figures 1 to 2 This application provides a technical solution:

[0029] An integrated threaded heating core includes a first metal tube 1 and a second metal tube 2. The first metal tube 1 is divided into a first connecting part 101, a heating part 102, and a second connecting part 103. The heating part 102 has a spiral groove 1021, the depth of which is equal to the wall thickness of the heating part 102. The length of the first connecting part 101 is greater than the length of the second connecting part 103. The second metal tube 2 is electrically connected to the second connecting part 103, and the second connecting part 103 is inserted into the second metal tube 2. The first connecting part 101 and the second metal tube 2 are respectively electrically connected to the positive and negative terminals of a power supply.

[0030] By creating a spiral groove 1021 on the heating element 102, the cross-sectional area of ​​the heating element 102 is reduced, and the resistance at the heating element 102 is increased. The first connecting part 101 and the second metal tube 2 are respectively connected to a voltage of 9V-0.5V. When current flows through the heating element 102, heat is generated, which heats the soldering iron tip for soldering, pyrography, engraving, cutting, or localized heating. The spiral groove 1021 is made by laser cutting or mechanical cutting, which increases the integrity of the heating element 102 with the first connecting part 101 and the second connecting part 103, avoiding defects at the connection points that could affect the service life of the heating element.

[0031] like Figure 3 As shown, at least one end of the second metal tube 2 is arranged in a constricted shape, and a slot 201 is provided at the end of the second metal tube 2. The slot 201 is inserted into and engaged with the second connecting part 103. The inner wall of the slot 201 may be provided with threads, and the second connecting part 103 is connected to the second metal tube 2 through the threads. In addition, the second connecting part 103 and the second metal tube 2 can also be connected and fixed by welding.

[0032] like Figure 4 As shown, the second metal tube 2 is sleeved on the outside of the first metal tube 1 and can be used to protect the first metal tube 1. The second metal tube 2 is fitted with the first metal tube 1 with a clearance. The surface of the first metal tube 1 is coated with a high-temperature resistant insulating coating, or a high-temperature resistant insulating tube is sleeved on the outside of the first metal tube 1 to achieve insulation between the first connecting part 101, the heating part 102 and the second metal tube 2.

Claims

1. An integrated threaded heating core, characterized in that: It includes a first metal tube (1) and a second metal tube (2). The first metal tube (1) is divided into a first connecting part (101), a heating part (102), and a second connecting part (103). The heating part (102) has a spiral groove (1021) with a depth equal to the wall thickness of the heating part (102). The length of the first connecting part (101) is greater than the length of the second connecting part (103). The second metal tube (2) is electrically connected to the second connecting part (103). The first connecting part (101) and the second metal tube (2) are electrically connected to the positive and negative poles of the power supply, respectively.

2. The integrated threaded heating core according to claim 1, characterized in that: The second metal tube (2) is sleeved on the outside of the first metal tube (1).

3. The integrated threaded heating core according to claim 1, characterized in that: The second metal tube (2) is clearance-fitted with the first metal tube (1).

4. The integrated threaded heating core according to claim 1, characterized in that: The second connecting part (103) is inserted into the second metal tube (2).

5. The integrated threaded heating core according to claim 4, characterized in that: The second metal tube (2) has a slot (201) at its end, and the slot (201) is inserted into the second connecting part (103).

6. The integrated threaded heating core according to claim 1, characterized in that: The spiral groove (1021) is made by laser cutting or mechanical cutting.

7. The integrated threaded heating core according to claim 1, characterized in that: The second metal tube (2) has at least one end in a constricted shape.

8. The integrated threaded heating core according to claim 1, characterized in that: The surface of the first metal tube (1) is coated with a high-temperature resistant insulating coating.

9. The integrated threaded heating core according to claim 1, characterized in that: The first metal tube (1) is fitted with a high-temperature resistant insulating tube on its outer side.

10. The integrated threaded heating core according to claim 1, characterized in that: The second connecting part (103) is welded and fixed to the second metal tube (2).

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