Heating assembly of hot wire stripper
By integrating the heating core with the wire stripper in the heat stripper and adopting a multi-layer insulation and shielding layer design, the problem of large heat loss in the prior art is solved, and efficient heat stripping operation is achieved.
Patent Information
- Application Number
- CN202422409874.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the heating assembly of existing heat strippers, the heating resistor wire is arranged separately from the cutting head, resulting in large heat loss, low usage efficiency, and easy to heat and heat when held in the handheld position.
The heating core and the stripping cutting head are integratedly connected directly. Through the multi-layer insulation and shielding layer design, a heating cavity is formed. The heating core generates heat in the cavity and conducts heat through the stripping cutting head to reduce heat loss.
It realizes rapid heating of the thermal wire stripper, reduces heat loss, improves usage efficiency, avoids heating in the handheld position, and improves user experience.
Smart Images
Figure CN223194317U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of insulation layer removal processing, and in particular to a heating component of a thermal wire stripper. Background Art
[0002] Before using high-temperature wires, wire strippers are typically used to remove the insulation from the ends of the wires before wiring. Common wire strippers feature blades in the jaws. The high-temperature wire is placed in the jaws, and the blades cut through the insulation. Then, force is applied to peel the temperature-sensitive wires, exposing the metal wires. To improve stripping efficiency, the blades can be heated to melt the insulation, allowing for faster removal.
[0003] Existing thermal wire strippers all incorporate a resistance wire into the pliers body. This resistance wire heats up when powered, causing the blades of the pliers to heat up. When the blades clamp onto the plastic sheath of the wire, the sheath melts and peels away. For example, a resistance wire is placed within the pliers body, with one end welded to the enameled wire and connected to the power source, while the other end contacts the pliers head for heat transfer during stripping.
[0004] In the existing thermal wire strippers, the heating component, heating resistor wire and blade head are generally set separately. The heating resistor wire contacts the pliers head for heat conduction only when stripping the wire. The heating resistor wire is distributed on the pliers body, while the actual use part is only at the blade of the pliers head. This can easily cause the entire thermal wire strippers to heat up when held in the hand. In addition, the heating resistor wire loses a lot of heat, resulting in low efficiency. Utility Model Content
[0005] The present application provides a heating component for thermal wire strippers, which enables the clamp body of the thermal wire strippers to heat up quickly, reduces heat loss, and improves usage efficiency.
[0006] According to the present application, an embodiment provides a heating assembly of a thermal wire stripper, comprising a heating element and a wire stripping head, wherein the heating element comprises, from the inside to the outside, a heating core, a first thermal insulation layer, a first shielding layer, a second thermal insulation layer, and a second shielding layer;
[0007] The first thermal insulation layer is used to isolate the heating core and the first shielding layer, and the second thermal insulation layer is used to isolate the first shielding layer and the second shielding layer; the wire stripping head is arranged at one end of the heating element, and the first thermal insulation layer and the wire stripping head are spaced apart along the length direction, and a heating cavity is formed between the first thermal insulation layer and the wire stripping head;
[0008] One end of the heating core is used for connecting to electricity, and the other end is used for connecting to the wire stripping head. The heating core generates heat in the heating cavity, and the wire stripping head is connected to the heating cavity and conducts heat.
[0009] In another embodiment, the heating core includes a thermocouple wire, an insulating layer and a heating wire from the inside to the outside, the insulating layer is used to isolate the thermocouple wire and the heating wire, the heating wire is arranged in the heating cavity and is used to generate electricity and heat, and the thermocouple wire is used to detect the real-time temperature of the heating core.
[0010] In another embodiment, the heat generating cavity is filled with ceramic powder.
[0011] In another embodiment, the insulating layer comprises a ceramic tube.
[0012] In another embodiment, the first shielding layer and the second shielding layer are configured as metal tubes and are used to shield electromagnetic interference and high-voltage electric field interference. The second shielding layer is grounded, one end of the heating wire is connected to the first shielding layer, and the other end is connected to the thermocouple wire to form a pathway for electricity.
[0013] In another embodiment, the second thermal insulation layer includes a high-temperature glass fiber tube and a Teflon tube in sequence along the length direction, the heating wire is arranged at one end of the thermocouple wire close to the wire stripping head, and the Teflon tube is arranged on the side of the high-temperature glass fiber tube away from the heating wire in the length direction.
[0014] In another embodiment, a limiting portion is provided on the outer ring of the second shielding layer, and the limiting portion is used to be positioned on a thermal wire stripper.
[0015] In another embodiment, the limiting portion includes a limiting ring, and the limiting ring is coaxially arranged with the second shielding layer.
[0016] In another embodiment, the wire stripping blade head includes a connecting portion and a blade head portion, the connecting portion is hollow and connected to the second shielding layer, and the heating core extends into the cavity of the connecting portion and is connected to the blade head portion.
[0017] In another embodiment, the inner circle of the second shielding layer near one end of the connecting portion is set to a stepped structure, so that a mounting groove for inserting the connecting portion is formed between the inner circle of the second shielding layer and the outer circle of the second thermal insulation layer.
[0018] According to the above-mentioned embodiment, the heating component of the thermal wire stripper includes a heating element and a wire stripping head. The heating element includes a heating core, a first thermal insulation layer, a first shielding layer, a second thermal insulation layer and a second shielding layer from the inside to the outside. The heating core is electrically connected and connected to the wire stripping head, and is integrated. The heating core generates heat in the heating cavity, and the wire stripping head is connected to the heating cavity for heat conduction. The outside of the heating cavity is insulated by the shielding layer and the thermal insulation layer, thereby reducing heat loss and improving utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1This is a schematic diagram of the overall structure of a heating component of a thermal wire stripper;
[0020] Figure 2 A schematic diagram of the internal structure of the second shielding layer in one embodiment;
[0021] Figure 3 is a schematic diagram of the cross-sectional structure of a heating component in one embodiment;
[0022] Figure 4 A top view of a heating component of a thermal wire stripper in one embodiment;
[0023] Figure 5 Schematic diagram of the internal structure of the first thermal insulation layer in an embodiment.
[0024] Reference numerals:
[0025] 1. Heating element;
[0026] 11. Heating core; 111. Thermocouple wire; 112. Insulation layer; 113. Heating wire;
[0027] 12. First thermal insulation layer;
[0028] 13. First shielding layer;
[0029] 14. Second thermal insulation layer; 141. High-temperature fiberglass tube; 142. Teflon tube;
[0030] 15. Second shielding layer; 151. Installation section; 152. Socket section; 16. Installation slot;
[0031] 2. Wire stripping blade; 21. Connecting part; 22. Blade head;
[0032] 3. Heating cavity;
[0033] 4. Limiting portion; 41. Limiting ring. DETAILED DESCRIPTION
[0034] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.
[0035] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various implementations, and the operational steps involved in each embodiment may be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a particular embodiment and do not imply a required composition and / or sequence.
[0036] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).
[0037] Before using a high-temperature wire, a wire stripper is generally required to remove the insulation layer 112 at the end of the wire body before wiring. Commonly used wire strippers have blades at the jaws. The high-temperature wire is placed in the jaws, and the blades are used to cut through the insulation layer 112. Force is then applied to peel off the temperature-sensitive wire, exposing the metal wire. To improve the stripping efficiency of the wire strippers, the blades can be heated to melt the insulation layer 112 of the high-temperature wire, quickly stripping the insulation layer 112. Existing thermal wire strippers all have a resistance wire built into the pliers body. The resistance wire is heated when powered, causing the blades of the pliers to heat up. When the blades clamp the plastic wire sheath, the sheath melts and peels off. For example, a resistance wire is provided within the pliers body, one end of which is welded to the enameled wire and connected to the power supply, while the other end contacts the pliers head for heat conduction during stripping.
[0038] In the existing thermal wire strippers, the heating component, heating resistor wire and blade head are generally set separately. The heating resistor wire contacts the pliers head for heat conduction only when stripping the wire. The heating resistor wire is distributed on the pliers body, while the actual use part is only at the blade of the pliers head. This can easily cause the entire thermal wire strippers to heat up when held in the hand. In addition, the heating resistor wire loses a lot of heat, resulting in low efficiency.
[0039] The present application provides a heating component for thermal wire strippers, which is directly connected to the wire stripping head 2 through a heating core 11 and integrated therewith, thereby achieving rapid heating of the thermal wire strippers, reducing heat loss, and improving usage efficiency.
[0040] Please refer to Figure 1 、 Figure 2 and Figure 3In one embodiment, a heating component of a thermal wire stripper is provided, comprising a heating element 1 and a wire stripping head 2, the heating element 1 comprising a heating core 11, a first thermal insulation layer 12, a first shielding layer 13, a second thermal insulation layer 14 and a second shielding layer 15 from the inside to the outside; the first thermal insulation layer 12 is used to isolate the heating core 11 and the first shielding layer 13, and the second thermal insulation layer 14 is used to isolate the first shielding layer 13 and the second shielding layer 15; the wire stripping head 2 is arranged at one end of the heating element 1, the first thermal insulation layer 12 and the wire stripping head 2 are spaced apart in the length direction, and a heating cavity 3 is formed between the first thermal insulation layer 12 and the wire stripping head 2; one end of the heating core 11 is used to connect to electricity, and the other end is used to connect to the wire stripping head 2, the heating core 11 generates heat in the heating cavity 3, and the wire stripping head 2 is connected to the heating cavity 3 and conducts heat.
[0041] For further information, please refer to Figure 2 、 Figure 3 and Figure 4 The heating core 11 includes a thermocouple wire 111, an insulating layer 112 and a heating wire 113 from the inside to the outside. The insulating layer 112 is used to isolate the thermocouple wire 111 and the heating wire 113. The heating wire 113 is arranged in the heating cavity 3 and is used for heating by power. The thermocouple wire 111 is used to detect the real-time temperature of the heating core 11.
[0042] For details, please refer to Figure 2 、 Figure 3 and Figure 4 The heating component of the thermal wire stripper is configured as a multi-layer cylindrical structure as a whole, with the thermocouple wire 111 as its axis and the longest length. The first thermal insulation layer 12 is configured as a pipe made of Teflon and is sleeved on the thermocouple wire 111. One end of the first thermal insulation layer 12 is located between the first shielding layer 13 and the thermocouple wire 111 to isolate the first shielding layer 13 from the thermocouple wire 111, thereby playing an insulating role. The other end is away from the wire stripping head 2 and is arranged beyond the end wall of the first shielding layer 13 to seal the heating cavity 3 and reduce heat loss.
[0043] Please refer to Figure 3 and Figure 5 The heating cavity 3 is located between the inner circle of the first shielding layer 13 and the outer circle of the thermocouple wire 111 in the radial direction, and between the end wall of the first thermal insulation layer 12 and the wire stripping head 2 in the axial direction. The insulating layer 112 adopts a ceramic tube and is sleeved on the thermocouple wire 111. The heating wire 113 is spirally shaped and wound around the outer circle of the ceramic tube. The ceramic tube is in direct contact with the heating wire 113 due to its high temperature resistance to isolate the heating wire 113 and the thermocouple wire 111, thereby preventing the heating wire 113 from being short-circuited.
[0044] For further information, please refer to Figure 2The heating wire 113 is arranged at one end of the thermocouple wire 111 close to the wire stripping head 2, and the heating point is arranged close to the wire stripping head 2, so as to facilitate rapid heating of the wire stripping head 2 and reduce the heat consumption generated during the transfer process.
[0045] In the embodiment of the present application, the first thermal insulation layer 12 is made of Teflon material, which has excellent heat resistance and cold resistance, and is resistant to acids, alkalis, and various organic solvents. It is almost insoluble in all solvents, ensuring the airtightness of the heating cavity 3.
[0046] For further information, please refer to Figure 3 、 Figure 4 and Figure 5 The first shielding layer 13 and the second shielding layer 15 are set as metal tubes and are used to shield electromagnetic interference and high-voltage electric field interference. The second shielding layer 15 is grounded. One end of the heating wire 113 is connected to the first shielding layer 13, and the other end is connected to the thermocouple wire 111 to form a path for electricity.
[0047] For details, please refer to Figure 3 、 Figure 4 and Figure 5 The first shielding layer 13 is set as an inner steel pipe and is sleeved on the outer ring of the first thermal insulation layer 12. The second thermal insulation layer 14 is sleeved on the outer ring of the first shielding layer 13. The second shielding layer 15 is set as an outer steel pipe and is sleeved on the outer ring of the second thermal insulation layer 14. The heating wire 113 is welded to the thermocouple wire 111 at one end close to the wire stripping head 2, and the other end is welded to the inner steel pipe serving as the first shielding layer 13. The thermocouple wire 111 and the first shielding layer 13 at one end facing away from the heating wire 113 are electrically connected to form a pathway. When the heating wire 113 is energized, the resistance increases and heat is generated, that is, the hot end of the thermocouple wire 111 is heated, so that the temperatures at the cold and hot ends are different, and a thermoelectric potential will be generated in the thermocouple circuit. The thermocouple wire 111 is measured by connecting wires and display instruments to obtain real-time temperature, which is convenient for temperature control of the hot wire stripping pliers.
[0048] In this embodiment, the steel pipe is made of SUS316, which has better heat resistance and lower corrosion resistance than SUS304 available on the market. The thermocouple wire 111 specifically adopts a K-type thermocouple, which is usually used in conjunction with a display instrument, a recording instrument and an electronic regulator. The thermocouple wire 111 is made of nickel-chromium and nickel-silicon, and has the characteristics of high chemical stability, large thermoelectric potential and good linearity compared to the nickel-aluminum alloy material on the market.
[0049] For further information, please refer to Figure 3The heating cavity 3 is filled with ceramic powder, which insulates the first shielding layer 13 from the heating wire 113. The ceramic tube prevents short circuits in the heating wire 113 and reduces heat loss, preventing the hot wire strippers from getting hot when held. In this embodiment, the ceramic tube is made of alumina ceramic, and the ceramic powder is magnesium oxide powder. The heating wire 113 is made of iron-chromium-aluminum, which has a maximum operating temperature of 1400°C, a long service life, good oxidation resistance, high resistivity, and a low price.
[0050] For further information, please refer to Figure 3 and Figure 5 The second thermal insulation layer 14 comprises a high-temperature fiberglass tube 141 and a Teflon tube 142 along its length. The inner and outer rings of the high-temperature fiberglass tube 141 and the Teflon tube 142 are aligned and positioned longitudinally on the side of the heating wire 113 facing away from the stripping head 2. The high-temperature fiberglass tube 141, made of fiberglass, insulates the outer steel tube of the second shielding layer 15 from the inner steel tube of the first shielding layer 13, preventing short circuits. The Teflon tube 142 also insulates the outer steel tube of the second shielding layer 15 from the inner steel tube of the first shielding layer 13, preventing short circuits.
[0051] Specifically, one end wall of the high-temperature glass fiber tube 141 and the Teflon tube 142 are butted against each other, and the Teflon tube 142 is arranged on the side of the high-temperature glass fiber tube 141 away from the heating wire 113 in the length direction, that is, the high-temperature glass fiber tube 141 is arranged on the side close to the heating wire 113 compared with the Teflon tube 142, because the closer to the heating wire 113, the higher the temperature, and the high-temperature resistance of the high-temperature glass fiber tube 141 is better than that of the Teflon tube 142.
[0052] For further information, please refer to Figure 1 and Figure 3 The outer ring of the second shielding layer 15 is provided with a limiting portion 4, which is used to position the thermal wire stripper. Specifically, the limiting portion 4 includes a limiting ring 41, and the limiting ring 41 is arranged coaxially with the second shielding layer 15. In the embodiment of the present application, the limiting portion 4 is made of N6 pure nickel wire, which has good strength and plasticity at high temperatures, poor thermal conductivity, and high resistivity. A corresponding concave slot is provided on the thermal wire stripper to fix the heating component of the present application. In other embodiments, the limiting portion 4 can also be configured as a block, a buckle, a threaded section, or other structures. The specific installation structure can be determined according to the appearance of the thermal wire stripper.
[0053] For further information, please refer to Figure 3 and Figure 5 The wire stripping head 2 includes a connecting portion 21 and a cutting head 22. The cutting head 22 and the connecting portion 21 are perpendicular to each other. The connecting portion 21 is hollow and coaxially connected to the second shielding layer 15. The cutting head 22 is provided with a blade. The thermocouple wire 111 extends into the cavity of the connecting portion 21 and is connected to the cutting head 22.
[0054] For details, please refer to Figure 5 The inner circle of the second shielding layer 15 at one end near the connecting part 21 is set to a stepped structure, that is, the inner diameter of the second shielding layer 15 is different along the length direction, including a mounting section 151 and a sleeve section 152, the sleeve section 152 is used to be sleeved on the outer circle of the second thermal insulation layer 14, and the inner circle diameter of the mounting section 151 is larger than the inner circle diameter of the sleeve section 152, so that a mounting groove 16 for inserting the connecting part 21 is formed between the inner circle of the mounting section 151 of the second shielding layer 15 and the outer circle of the high-temperature glass fiber tube 141 of the second thermal insulation layer 14; the outer circle of the connecting part 21 corresponding to the inner circle of the mounting section 151 is also set to a stepped structure, so that after the connecting part 21 is inserted into the mounting groove 16, the outer circle of the connecting part 21 is flush with the outer circle of the second shielding layer 15, and the connection and fixation are achieved by laser welding, thereby enhancing the integrity of the heating component and the airtightness of the heating cavity 3, and further reducing heat loss.
[0055] For further information, please refer to Figure 5 The thermocouple wire 111 extends into the cavity of the connecting part 21 and is connected to the cutter head 22. The connecting part 21 is connected to the cavity and the heating cavity 3 and is in the same closed space. The heating core 11 is in the cavity of the connecting part 21, which facilitates the wire stripping cutter head 2 to heat up quickly.
[0056] In the embodiment of the present application, the wire stripping head 2 is made of brass and has a lead-free corrosion-resistant coating with a thickness of about 100 to 300 μm that has been tinned in advance. The overall surface is specially treated to effectively resist oxidation, thereby increasing the service life of the wire stripping head 2.
[0057] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.
Claims
1. A heating component of a thermal wire stripper, characterized in that: It comprises a heating element (1) and a wire stripping head (2), wherein the heating element (1) comprises, from the inside to the outside, a heating core (11), a first heat insulation layer (12), a first shielding layer (13), a second heat insulation layer (14) and a second shielding layer (15); The first heat insulation layer (12) is used to isolate the heating core (11) and the first shielding layer (13), and the second heat insulation layer (14) is used to isolate the first shielding layer (13) and the second shielding layer (15); the wire stripping head (2) is arranged at one end of the heating element (1), the first heat insulation layer (12) and the wire stripping head (2) are spaced apart in the length direction, and a heating cavity (3) is formed between the first heat insulation layer (12) and the wire stripping head (2); One end of the heating core (11) is used for connecting to electricity, and the other end is used for connecting to the wire stripping head (2); the heating core (11) generates heat in the heating cavity (3), and the wire stripping head (2) is connected to the heating cavity (3) and conducts heat.
2. The heating element of the thermal wire stripper according to claim 1, wherein: The heating core (11) comprises, from the inside to the outside, a thermocouple wire (111), an insulating layer (112) and a heating wire (113), wherein the insulating layer (112) is used to isolate the thermocouple wire (111) from the heating wire (113), the heating wire (113) is arranged in the heating cavity (3) and is used to generate heat when energized, and the thermocouple wire (111) is used to detect the real-time temperature of the heating core (11).
3. The thermal wire stripper heating component according to claim 2, wherein: The heating cavity (3) is filled with porcelain powder.
4. The thermal wire stripper heating component according to claim 2, wherein: The insulating layer (112) includes a ceramic tube.
5. The heating component of the thermal wire stripper according to claim 2, characterized in that: The first shielding layer (13) and the second shielding layer (15) are configured as metal tubes and are used to shield electromagnetic interference and high-voltage electric field interference. The second shielding layer (15) is grounded. One end of the heating wire (113) is connected to the first shielding layer (13), and the other end is connected to the thermocouple wire (111) to form a passage for electricity.
6. The heating element of the thermal wire stripper according to claim 5, wherein: The second heat-insulating layer (14) includes a high-temperature glass fiber tube (141) and a Teflon tube (142) in sequence along the length direction; the heating wire (113) is arranged at one end of the thermocouple wire (111) close to the wire stripping head (2), and the Teflon tube (142) is arranged on a side of the high-temperature glass fiber tube (141) away from the heating wire (113) in the length direction.
7. The thermal wire stripper heating component according to claim 1, wherein: The outer ring of the second shielding layer (15) is provided with a limiting portion (4), and the limiting portion (4) is used for positioning on a thermal wire stripper.
8. The thermal wire stripper heating component according to claim 7, wherein: The limiting portion (4) comprises a limiting ring (41), and the limiting ring (41) is coaxially arranged with the second shielding layer (15).
9. The thermal wire stripper heating component according to claim 1, wherein: The wire stripping blade (2) comprises a connecting portion (21) and a blade head portion (22); the connecting portion (21) is hollow and connected to the second shielding layer (15); the heating core (11) extends into the cavity of the connecting portion (21) and is connected to the blade head portion (22).
10. The heating component of the thermal wire stripper according to claim 9, characterized in that: The inner ring of the second shielding layer (15) at one end close to the connecting portion (21) is configured as a stepped structure, so that a mounting groove (16) for inserting the connecting portion (21) is formed between the inner ring of the second shielding layer (15) and the outer ring of the second heat-insulating layer (14).