Manufacturing method of a soldering gun heating device, soldering gun heating device and soldering gun

Abstract

The application relates to the technical field of solder suction guns, and particularly discloses a manufacturing method of a solder suction gun heating device, the solder suction gun heating device and the solder suction gun. The manufacturing method of the solder suction gun heating device comprises the following steps: connecting and fixing each un-assembled structural member of a heating core assembly with a solder suction pipe; pouring ceramic powder slurry between a ceramic heating pipe and an outer heat conduction pipe which are nested in the heating core assembly, and coagulating the ceramic heating pipe and the outer heat conduction pipe into a whole through the ceramic powder slurry to form the heating core assembly; connecting and fixing a fixed pipe base with the heating core assembly and a power supply connecting assembly, and connecting and assembling the power supply connecting assembly with corresponding lead wires. The technical scheme of the application can effectively improve the high-temperature resistance and aging resistance of the heating core assembly, avoids oxidation and fracture of the metal heating wire, has high reliability, is not prone to faults, has high structural stability and uniform heat conduction, has high temperature rising and falling speed, can avoid local overheating or cold spots, and is suitable for the intermittent working requirements of the solder suction gun.

Description

Technical Field

[0001] This application relates to the field of desoldering gun technology, specifically to a method for manufacturing a desoldering gun heating device, a desoldering gun heating device, and a desoldering gun. Background Technology

[0002] Currently, common desoldering guns typically use resistance heating elements or PTC ceramic heating elements. Resistance heating elements involve winding an alloy heating wire directly onto a regular ceramic tube; heat is generated when current passes through the wire. However, the heating wire is prone to oxidation and breakage under localized overheating. PTC ceramic heating elements use a PI film coated on the surface of a PTC ceramic chip; however, the PI film is prone to aging and insulation failure over long-term use. Therefore, the existing heating element designs in desoldering guns have drawbacks: poor reliability, susceptibility to damage or insulation failure, and disruption to normal heating. Summary of the Invention

[0003] The main technical problem this application addresses is that the heating element of desoldering guns in related technologies has design flaws, poor reliability, and is prone to damage or insulation failure during use, affecting normal heating. Based on one of the above objectives, this application provides a method for manufacturing a desoldering gun heating device, a desoldering gun heating device, and a desoldering gun.

[0004] The first aspect of this application provides a method for manufacturing a desoldering gun heating device, the desoldering gun heating device including a desoldering tube, a fixed tube base, a heating core assembly, and a power supply connection assembly; the method for manufacturing the desoldering gun heating device includes:

[0005] Step S100: Connect and fix each unassembled structural component of the heating core assembly to the desoldering tube;

[0006] Step S200: Ceramic powder slurry is poured between the ceramic heating tube and the external heat conduction tube nested in the heating core assembly, and the ceramic heating tube and the external heat conduction tube are solidified into a whole by the ceramic powder slurry to form the heating core assembly;

[0007] Step S300: Connect and fix the fixed tube base to the heating core assembly and the power supply connection assembly, and connect and assemble the power supply connection assembly with the corresponding lead wire to form a desoldering gun heating device.

[0008] In one embodiment, each unassembled structural component of the heating core assembly includes an inner heat pipe, a ceramic heating pipe, an outer heat pipe, a heating wire, and a heating lead.

[0009] Step S100: Connect and fix each unassembled structural component of the heating core assembly to the desoldering tube, including:

[0010] Step S110: Attach the inner heat pipe to the outside of the desoldering tube;

[0011] Step S120: Insert the inner heat-conducting tube and the desoldering tube into the ceramic heating tube, and assemble the heating wire and the heating lead wire into the preset position on the ceramic heating tube and fix them in place;

[0012] Step S130: The external heat pipe is fitted onto the outside of the ceramic heating tube, and the front end of the desoldering tube protrudes through the front end cap of the external heat pipe; wherein, the space between the front end cap and the inner wall of the external heat pipe and the outer wall of the ceramic heating tube forms a filling cavity.

[0013] In one embodiment, step S110: attaching the inner heat pipe to the outside of the desoldering tube includes:

[0014] Step S111: Weld an annular sealing plate to the rear side wall of the desoldering tube, with the annular sealing plate connected to the desoldering tube;

[0015] Step S112: The inner heat pipe is sleeved from the front end of the desoldering tube onto the outside of the desoldering tube, and the preset length area on the inner side wall of the inner heat pipe near the front end is fixed with the outer side wall of the desoldering tube by interference fit.

[0016] The inner sidewall of the ceramic heating tube is provided with a plurality of first wire passage holes spaced circumferentially. The first wire passage holes are axially through, and the inner sidewall of the ceramic heating tube has a convex ridge structure extending axially at the position corresponding to each first wire passage hole. The outer sidewall of the ceramic heating tube has a first groove near the front end and a second groove near the rear end. The first groove and the second groove are respectively connected to different first wire passage holes.

[0017] Step S120: Insert the inner heat-conducting tube and the desoldering tube into the ceramic heating tube, and assemble and fix the heating wire and heating lead wire to the preset positions on the ceramic heating tube, including:

[0018] Step S121: Insert the inner heat pipe and the desoldering tube into the ceramic heating tube, and make the convex structure abut against the inner heat pipe.

[0019] Step S122: The heating wire is wound in a spiral shape on the outer wall of the ceramic heating tube. The two heating leads are respectively passed through different first wire holes. One heating lead is welded and fixed to the front end of the heating wire in the first groove, and the other heating lead is welded and fixed to the rear end of the heating wire in the second groove.

[0020] In one embodiment, step S200: Ceramic powder slurry is injected between the ceramic heating tube and the external heat-conducting pipe nested within the heating core assembly, and the ceramic heating tube and the external heat-conducting pipe are solidified into a whole by the ceramic powder slurry to form the heating core assembly, including:

[0021] Step S210: Ceramic powder slurry is injected into the injection cavity between the ceramic heating tube and the external heat pipe from the rear end of the external heat pipe; wherein, the ceramic powder slurry is a solution of alumina ceramic powder, neutral silica solution and sodium polyacrylate mixed in a volume ratio of 100:100:1.

[0022] Step S220: Place the completed grouting structure in a vibratory dish for vibration to allow the ceramic powder in the ceramic slurry to settle; wherein, the vibration frequency of the vibration operation is 20Hz to 30Hz and the vibration duration is 30 minutes.

[0023] Step S230: Place the vibrated overall structure in an oven for baking to evaporate the moisture in the ceramic powder slurry and solidify the ceramic powder, and solidify the external heat pipe, ceramic heating tube, heating wire, and heating lead wire to form the assembled heating core assembly; wherein, the baking temperature is 100℃ and the baking time is 1 hour.

[0024] In one embodiment, step S300: The fixing tube base is connected and fixed to the heating core assembly and the power supply connection assembly, and the power supply connection assembly is connected and assembled with the corresponding leads to form a desoldering gun heating device, including:

[0025] Step S310: Pass one end of the temperature measuring lead through the fixed tube base and weld it to the inner wall of the fixed tube base.

[0026] Step S320: Fit the fixing tube seat onto the outside of the external heat pipe;

[0027] Step S330: Insert the heating lead and the temperature measuring lead into the power supply connection tube of the power supply connection assembly, and weld the power supply connection tube to the rear end of the fixed tube seat;

[0028] Step S340: Install the fixing plug and electrode plate at the rear end of the power supply connection tube, and weld the different electrode plates to the corresponding heating lead and temperature measuring lead respectively;

[0029] Step S350: Install the dust plug at the front end of the power supply connection tube, and use the dust plug to press the heating lead and temperature measuring lead tightly against the inner wall of the power supply connection tube.

[0030] In one embodiment, the outer sidewall of the external heat pipe has an axially extending wire groove, the front end of which extends to the front end cap; the sidewall of the external heat pipe has a circumferentially extending annular groove near the front end cap.

[0031] Step S320: Attach the fixing sleeve to the outside of the external heat pipe, including:

[0032] Step S321: Align the temperature sensing lead with the wire groove along the axial direction;

[0033] Step S322: The fixing tube seat is fitted onto the outside of the external heat pipe so that the fixing tube seat and the external heat pipe form an interference fit; wherein, the temperature measuring lead is inserted into the wire groove and abuts against the front end cap, and the annular groove is used to accommodate the debris generated on the contact surface during the fitting operation of the fixing tube seat and the external heat pipe.

[0034] In one embodiment, the power supply connection assembly includes a power supply connection tube, a fixing plug, an electrode plate, and a dust plug; a first opening is provided on the side wall of the power supply connection tube near the front end;

[0035] Step S330: Insert the heating lead and the temperature sensing lead into the power supply connection tube of the power supply connection assembly, and solder the power supply connection tube to the rear end of the fixing tube socket, including:

[0036] Step S331: Insert the two heating leads and the temperature measuring lead through the first opening into the power supply connection tube and extend them out from the rear end of the power supply connection tube;

[0037] Step S332: Solder the front end of the power supply connector to the rear end of the fixed tube socket, and set the power supply connector and the desoldering tube in a staggered manner.

[0038] In one embodiment, the fixing plug has a plurality of second through holes that extend axially, and a plurality of third grooves are provided on the sidewall of the fixing plug near the rear end. Each third groove communicates with a corresponding second through hole, and the inner sidewall of the third groove has a slot structure.

[0039] Step S340: Install the fixing plug and electrode plates at the rear end of the power supply connection pipe, and weld the different electrode plates to the corresponding heating leads and temperature measuring leads respectively, including:

[0040] Step S341: Install one end of the fixing plug at the rear end of the power supply connection tube, and pass the two heating leads and the temperature measuring leads through the corresponding second wire holes into the corresponding third grooves respectively;

[0041] Step S342: Insert the corresponding electrode sheet into the slot structure of each third groove, and weld the two heating leads and the temperature measuring leads to the corresponding electrode sheet.

[0042] An embodiment of the second aspect of this application provides a desoldering gun heating device, comprising: a desoldering tube, wherein an annular sealing plate is connected to the side wall of the desoldering tube near its rear end; a heating core assembly, sleeved on the outside of the desoldering tube, the heating core assembly having heating leads and temperature sensing leads extending from the rear end of the heating core assembly; a fixing tube base, including a fixing tube and a fixing seat, the fixing tube being sleeved on the outside of the heating core assembly, the fixing seat being connected to the rear end of the fixing tube, and the fixing seat having a mounting hole offset from the fixing tube; and a power supply connection assembly, one end of which is connected to the mounting hole and extends axially toward the rear of the fixing tube base; wherein the heating leads and temperature sensing leads pass through the power supply connection assembly and are connected to corresponding electrode plates at the rear end of the power supply connection assembly; wherein the desoldering gun heating device is manufactured according to the manufacturing method of the desoldering gun heating device in any embodiment of the first aspect described above.

[0043] The third-party embodiments of this application provide a desoldering gun, including: an operating body; a desoldering gun heating device according to any of the above embodiments, connected to the operating body; and a power supply device electrically connected to the power supply connection assembly of the desoldering gun heating device, so as to supply power to the heating core assembly through the power supply connection assembly.

[0044] According to the technical solution of the above embodiments, by improving the manufacturing process and structure, the high temperature resistance and anti-aging performance of the heating core component can be effectively improved. Compared with the traditional ordinary ceramic tubes and PTC ceramic chips with wound alloy wires, it can effectively avoid oxidation and breakage of metal heating wires. It has high reliability and is not prone to failure during long-term use. Moreover, it has better structural stability and heat conduction uniformity, and the heating and cooling speed is fast. It can avoid local overheating or cold spots and is suitable for the intermittent working requirements of desoldering guns. Attached Figure Description

[0045] Figure 1 This is a schematic flowchart illustrating the manufacturing method of the desoldering gun heating device in one embodiment of this application.

[0046] Figure 2 This is a perspective view of a desoldering gun heating device in one embodiment of this application.

[0047] Figure 3 This is a top view of a desoldering gun heating device in one embodiment of this application.

[0048] Figure 4 for Figure 3 A cross-sectional view of the heating device of the desoldering gun in the image.

[0049] Figure 5 for Figure 4 A cross-sectional view of a portion of the structure of the desoldering gun heating device.

[0050] Figure 6This is a flowchart illustrating some of the steps in the manufacturing method of the desoldering gun heating device in one embodiment of this application.

[0051] Figure 7 This is a schematic diagram of the assembly of the desoldering tube and the inner heat pipe in one embodiment of this application.

[0052] Figure 8 This is a side view of a ceramic heating element in one embodiment of this application.

[0053] Figure 9 This is a side view of the assembled tin-absorbing tube, internal heat-conducting tube, and ceramic heating tube in one embodiment of this application.

[0054] Figure 10 This is a flowchart illustrating some of the method steps of manufacturing a desoldering gun heating device in another embodiment of this application.

[0055] Figure 11 This is a flowchart illustrating some of the method steps of manufacturing a desoldering gun heating device in another embodiment of this application.

[0056] Figure 12 This is a flowchart illustrating some of the method steps of manufacturing a desoldering gun heating device in another embodiment of this application.

[0057] Figure 13 This is a three-dimensional schematic diagram of the assembled desoldering tube and heating core assembly in one embodiment of this application (the annular sealing plate is not shown).

[0058] Figure 14 This is a side view of the assembled desoldering tube and heating core assembly in one embodiment of this application.

[0059] Figure 15 This is a top view of the assembled desoldering tube and heating core assembly in one embodiment of this application.

[0060] Figure 16 This is a flowchart illustrating some of the method steps of manufacturing a desoldering gun heating device in another embodiment of this application.

[0061] Figure 17 This is a three-dimensional schematic diagram of the assembled desoldering tube, heating core assembly, and fixing tube base in one embodiment of this application.

[0062] Figure 18 This is a top view of the assembled desoldering tube, heating core assembly, and fixing tube base in one embodiment of this application.

[0063] Figure 19 This is a side view of the desoldering gun heating device in one embodiment of this application (with the power supply connection component partially assembled).

[0064] Figure 20 This is a side view of the desoldering gun heating device in one embodiment of this application.

[0065] Figure 21 This is a flowchart illustrating some of the method steps of manufacturing a desoldering gun heating device in another embodiment of this application.

[0066] Figure 22 This is an exploded view of the power supply connection component in one embodiment of this application.

[0067] Figure 23 This is a perspective view of the desoldering gun heating device in another embodiment of this application.

[0068] Figure 24 This is a flowchart illustrating some of the method steps of manufacturing a desoldering gun heating device in another embodiment of this application.

[0069] Figure 25 This is a flowchart illustrating some of the method steps of manufacturing a desoldering gun heating device in another embodiment of this application.

[0070] Figure 26 This is a schematic block diagram of a desoldering gun in one embodiment of this application.

[0071] In the above-mentioned attached figures, arrow F1 indicates the first direction.

[0072] Label Explanation:

[0073] 100 Desoldering gun heating device, 1 heating core assembly, 11 inner heat pipe, 12 ceramic heating tube, 121 first wire passage hole, 122 first groove, 123 second groove, 124 protruding ridge structure, 13 outer heat pipe, 131 front end cap, 132 end cap opening, 133 wire passage groove, 134 annular groove, 14 ceramic powder condensation layer, 15 heating wire, 161 heating lead, 162 temperature measuring lead, 2 desoldering tube, 21 annular sealing plate, 3 fixing tube base, 31 fixing tube, 32 fixing base, 321 mounting hole, 4 power supply connection assembly, 41 power supply connection tube, 411 first opening, 42 fixing plug, 421 second wire passage hole, 422 third groove, 423 slot structure, 43 electrode plate, 44 dust plug; N preset length;

[0074] 500 Desoldering gun, 510 Operating body, 520 Power supply device. Detailed Implementation

[0075] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0076] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0077] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0078] Currently, desoldering guns using resistive heating elements or PTC ceramic heating elements have the following drawbacks: Resistive heating elements involve winding an alloy heating wire directly onto a regular ceramic tube; heat is generated when current passes through the wire. However, the heating wire is prone to oxidation and breakage under localized overheating. PTC ceramic heating elements use a PI film wrapped around the surface of a PTC ceramic chip; however, the PI film is prone to aging and insulation failure during long-term use. These drawbacks result in poor reliability of the heating elements, making them susceptible to damage or insulation failure, thus affecting normal heating.

[0079] The heating device for the desoldering gun and its manufacturing method disclosed in this application can effectively overcome the above-mentioned drawbacks of existing desoldering gun equipment. The heating core assembly has strong structural stability and reliability, and is not prone to damage or insulation failure during long-term use. It is suitable for the intermittent operation requirements of the desoldering gun.

[0080] The following describes, with reference to the accompanying drawings, some embodiments of the desoldering gun heating device, the desoldering gun heating device, and the desoldering gun provided in this application.

[0081] For ease of description, in the following embodiments, the length direction of the desoldering tube is taken as the first direction, the end of which is used to contact the solder is the front end, and the opposite end is the rear end.

[0082] One embodiment of this application provides a method for manufacturing a desoldering gun heating device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the desoldering gun heating device 100 includes a heating core assembly 1, a desoldering tube 2, a fixing tube base 3, and a power supply connection assembly 4. Before manufacturing, the heating core assembly 1 includes multiple unassembled structural components, such as an inner heat-conducting pipe 11, a heating tube, an outer heat-conducting pipe 13, a heating wire 15, a heating lead 161, and a temperature-sensing lead 162. During manufacturing, the desoldering gun heating device 100 can be produced using the manufacturing method described in this embodiment.

[0083] The manufacturing method of the desoldering gun heating device includes the following steps:

[0084] Step S100: Connect and fix each unassembled structural component of the heating core assembly to the desoldering tube;

[0085] Step S200: Ceramic powder slurry is poured between the ceramic heating tube and the external heat conduction tube nested in the heating core assembly, and the ceramic heating tube and the external heat conduction tube are solidified into a whole by the ceramic powder slurry to form the heating core assembly;

[0086] Step S300: Connect and fix the fixed tube base to the heating core assembly and the power supply connection assembly, and connect and assemble the power supply connection assembly with the corresponding lead wire to form a desoldering gun heating device.

[0087] In this embodiment, step S100 involves the basic assembly of the unassembled structural components of the heating core assembly 1 with the desoldering tube 2 to form the base of the heating core assembly 1. Step S200 involves the ceramic powder slurry pouring operation, which causes the ceramic heating tube 12 and the external heat-conducting tube 13 of the heating core assembly 1 to solidify together through ceramic powder, thus assembling the overall structure of the heating core assembly 1. This completely covers the heating wire 15 on the surface of the ceramic heating tube 12 within the ceramic powder solidification layer 14, allowing the heating tube to conduct heat through the ceramic powder solidification layer 14. Step S300 completes the connection and assembly of the heating core assembly 1 with the corresponding leads, fixing tube 3, and power supply connection assembly 4, forming a complete desoldering gun heating device 100. In use, the heating core assembly 1 heats up when energized, causing the temperature of the desoldering tube 2 to rise and melt the required solder, which is then drawn into the corresponding storage container.

[0088] It is understandable that if the heating wire is pre-embedded in the overall ceramic matrix, it will be difficult to achieve high compatibility with the external heat pipe during later assembly, making direct connection and fixation difficult, resulting in poor overall structural stability. In this embodiment, ceramic powder slurry is poured in after the ceramic heating element and the external heat pipe are assembled. The slurry solidifies to form a ceramic powder condensation layer, allowing the ceramic heating element to solidify with the external heat pipe through the ceramic powder condensation layer, completely encasing the heating wire and forming a stable structure that is resistant to high temperatures and aging.

[0089] The manufacturing method of the desoldering gun heating device in this application, through improvements in manufacturing process and structure, can effectively improve the high temperature resistance and anti-aging performance of the heating core component. Compared with traditional ordinary ceramic tubes and PTC ceramic chips with wound alloy wires, it can effectively avoid oxidation and breakage of metal heating wires, has high reliability during long-term use, is not prone to failure, and has better structural stability and heat conduction uniformity. It also has a fast heating and cooling speed, which can avoid local overheating or cold spots, and is suitable for the intermittent working requirements of desoldering guns.

[0090] It should be noted that the ceramic powder slurry can be formulated according to the appropriate materials to match the ceramic heating tube 12 and the external heat conduction tube 13, so as to meet the requirements of uniform heat conduction, high temperature resistance and anti-aging.

[0091] In one embodiment, such as Figure 4 and Figure 5 As shown, the unassembled structural components of the heating core assembly 1 specifically include an inner heat-conducting pipe 11, a ceramic heating tube 12, an outer heat-conducting pipe 13, a heating wire 15, and a heating lead 161. Correspondingly, as... Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, in the manufacturing method of the desoldering gun heating device, step S100 specifically includes:

[0092] Step S110: Attach the inner heat pipe to the outside of the desoldering tube;

[0093] Step S120: Insert the inner heat-conducting tube and the desoldering tube into the ceramic heating tube, and assemble the heating wire and the heating lead wire into the preset position on the ceramic heating tube and fix them in place;

[0094] Step S130: The external heat pipe is fitted onto the outside of the ceramic heating tube, and the front end of the desoldering tube protrudes through the front end cap of the external heat pipe; wherein, the space between the front end cap and the inner wall of the external heat pipe and the outer wall of the ceramic heating tube forms a filling cavity.

[0095] In this embodiment, through steps S110 to S130, the desoldering tube 2, the inner heat-conducting tube 11, the ceramic heating tube 12, and the outer heat-conducting tube 13 are sequentially assembled to form a nested connection structure. Simultaneously, during the assembly of the ceramic heating tube 12, the heating wire 15 and the corresponding heating lead 161 are assembled to preset positions on the ceramic heating tube 12, forming the basic structure of the heating core assembly 1. Specifically, in the first direction, the outer heat-conducting tube 13 has a front end cap 131 with an end cap opening 132, and the front end of the desoldering tube 2 extends through the front end cap 131 to facilitate the absorption of solder. The front end cap 131 and the sidewall of the outer heat-conducting tube 13, together with the outer sidewall of the heating tube, form a pouring cavity to accommodate the ceramic powder slurry.

[0096] In one embodiment, such as Figures 7 to 9 As shown, in the desoldering gun heating device 100, a plurality of first wire-passing holes 121 are circumferentially spaced on the inner sidewall of the ceramic heating tube 12. The first wire-passing holes 121 are axially penetrating, and each first wire-passing hole 121 has an axially extending convex ridge structure 124 at a position corresponding to the inner sidewall of the ceramic heating tube 12. A first groove 122 is located near the front end of the outer sidewall of the ceramic heating tube 12, and a second groove 123 is located near the rear end of the outer sidewall of the ceramic heating tube 12. The first groove 122 and the second groove 123 are respectively connected to different first wire-passing holes 121. Correspondingly, as... Figure 10 , Figure 11 As shown, in the manufacturing method of the desoldering gun heating device, step S110 specifically includes:

[0097] Step S111: Weld an annular sealing plate to the rear side wall of the desoldering tube, with the annular sealing plate connected to the desoldering tube;

[0098] Step S112: The inner heat pipe is fitted from the front end of the desoldering tube onto the outside of the desoldering tube, and the preset length area on the inner side wall of the inner heat pipe near the front end is fixed with the outer side wall of the desoldering tube by interference fit.

[0099] Step S120 specifically includes:

[0100] Step S121: Insert the inner heat pipe and the desoldering tube into the ceramic heating tube, and make the convex structure abut against the inner heat pipe.

[0101] Step S122: The heating wire is wound in a spiral shape on the outer wall of the ceramic heating tube. The two heating leads are respectively passed through different first wire holes. One heating lead is welded and fixed to the front end of the heating wire in the first groove, and the other heating lead is welded and fixed to the rear end of the heating wire in the second groove.

[0102] In this embodiment, through steps S111 to S112, the desoldering tube 2 and the inner heat-conducting pipe 11 are nested together, and an interference fit is used to maintain a fixed positional relationship between them, thus eliminating the need for soldering or other connection structures and facilitating assembly. Preferably, the preset length N can be set in the range of 25mm to 28mm, for example, the preset length N can be 26.5mm, so that there is sufficient interference fit contact surface between the desoldering tube 2 and the inner heat-conducting pipe 11 to ensure connection stability. An annular sealing plate 21 is provided at the rear end of the desoldering tube 2 to provide a sealing function when the desoldering tube 2 is connected to the storage container. In addition, a specially designed ceramic heating tube 12 is used, with a heating wire 15 wound around its outer wall. A heating lead 161 is positioned using a first wire-passing hole 121 within its side wall. A first groove 122 and a second groove 123 connect to different first wire-passing holes 121, respectively, to provide space for welding the heating wire 15 to different heating leads 161 at both ends, thus allowing two different heating leads 161 to form an input and output electrode. Multiple protruding ribs 124 are provided on the inner side wall of the ceramic heating tube 12. These ribs serve two purposes: firstly, to fix the inner heat-conducting tube 11 during assembly; and secondly, to provide space for the first wire-passing holes 121, preventing the inability to drill holes due to insufficient wall thickness of the ceramic heating tube 12. Correspondingly, during the manufacturing process, steps S121 to S122 complete the assembly of the inner heat-conducting tube 11 and the desoldering tube 2 within the ceramic heating tube 12, as well as the wiring and welding of the heating wire 15 and the heating lead 161, facilitating subsequent connection of the heating lead 161.

[0103] Specifically, the ceramic heating element 12 can be made of alumina ceramic, and the heating wire 15 can be made of iron-chromium-aluminum alloy wire; the heating lead 161 can be made of nickel wire with a diameter of 0.6mm. Both the inner heat-conducting pipe 11 and the outer heat-conducting pipe 13 are made of brass; the annular sealing plate 21 is made of 304 stainless steel. Additionally, the first groove 122 and the second groove 123 can be made of... Figures 8 to 10 The flat-mouth-like structure formed by the planar cutting is a groove that runs through both sides laterally. It only requires cutting a plane of a preset size on the side wall of the cylinder, which is convenient for processing and shaping. Of course, the first groove 122 and the second groove 123 can also be set as grooves with side walls on all four sides as needed.

[0104] In one embodiment, such as Figure 12 , Figure 13 , Figure 14 , Figure 15 As shown, in the manufacturing method of the desoldering gun heating device, step S200 specifically includes:

[0105] Step S210: Ceramic powder slurry is injected into the injection cavity between the ceramic heating tube and the external heat pipe from the rear end of the external heat pipe; wherein, the ceramic powder slurry is a solution of alumina ceramic powder, neutral silica solution and sodium polyacrylate mixed in a volume ratio of 100:100:1.

[0106] Step S220: Place the completed grouting structure in a vibratory dish for vibration to allow the ceramic powder in the ceramic slurry to settle; wherein, the vibration frequency of the vibration operation is 20Hz to 30Hz and the vibration duration is 30 minutes.

[0107] Step S230: Place the vibrated overall structure in an oven for baking to evaporate the moisture in the ceramic powder slurry and solidify the ceramic powder, and solidify the external heat pipe, ceramic heating tube, heating wire, and heating lead wire to form the assembled heating core assembly 1; wherein, the baking temperature of the baking operation is 100℃ and the baking time is 1 hour.

[0108] It should be noted that, as Figure 13 , Figure 14 As shown, the external heat pipe 13 has a front end cap 131, and the front end cap 131 has an end cap opening 132 through which the front end of the desoldering tube 2 can pass; when the ceramic heating tube 12 is assembled into the external heat pipe 13, the gap space between the ceramic heating tube 12 and the external heat pipe 13 forms a filling cavity similar to an annular groove, which can accommodate ceramic powder slurry; the front end cap 131 can seal the front end of the filling cavity to avoid material leakage during filling.

[0109] In this embodiment, ceramic powder slurry is injected into the injection cavity in step S210, so that the injection cavity is filled with ceramic powder slurry and covers the outside of the ceramic heating tube 12; then, in steps S220 and S230, vibration is performed to make the ceramic powder in the ceramic powder slurry settle evenly, and then baking is performed to evaporate the water in the ceramic powder slurry and condense the ceramic powder, so as to form a ceramic powder condensation layer 14 on the outer surface of the ceramic heating tube 12. On the one hand, it wraps the heating wire 15 and its solder joint with the heating lead 161, and on the other hand, it fixes the ceramic heating tube 12 and the external heat conduction pipe 13 through the condensation of the ceramic powder condensation layer 14.

[0110] Specifically, the ceramic slurry is a solution made by mixing alumina ceramic powder, neutral silica solution, and sodium polyacrylate in a volume ratio of 100:100:1. The alumina ceramic powder and neutral silica solution are mixed in a 1:1 ratio, and after vibration and baking, a uniform composite powder structure is obtained without significant hard agglomeration. This allows the silica component to uniformly coat the surface of the alumina particles in the form of amorphous silica. Acumer 9300 sodium polyacrylate can be used, which has the following advantages: 1) Water reduction and grinding aid: Low molecular weight sodium polyacrylate can significantly improve the fluidity of ceramic slurry, reduce the water content of the slurry, and reduce the energy consumption of spray drying; 2) Green body reinforcement: As a ceramic green body reinforcing agent, it can significantly improve the drying strength of the ceramic green body; 3) Dispersion stability: As an anionic dispersant, it adsorbs on the surface of alumina particles, increases the electrostatic repulsion between particles, prevents powder agglomeration and sedimentation, and improves the overall stability of the slurry.

[0111] In one embodiment, such as Figure 16 , Figure 17 , Figure 18 , Figure 19 and Figure 20 As shown, in the manufacturing method of the desoldering gun heating device, step S300 specifically includes:

[0112] Step S310: Pass one end of the temperature measuring lead through the fixed tube base and weld it to the inner wall of the fixed tube base.

[0113] Step S320: Fit the fixing tube seat onto the outside of the external heat pipe;

[0114] Step S330: Insert the heating lead and the temperature measuring lead into the power supply connection tube of the power supply connection assembly, and weld the power supply connection tube to the rear end of the fixed tube seat;

[0115] Step S340: Install the fixing plug and electrode plate at the rear end of the power supply connection tube, and weld the different electrode plates to the corresponding heating lead and temperature measuring lead respectively;

[0116] Step S350: Install the dust plug at the front end of the power supply connection tube, and use the dust plug to press the heating lead and temperature measuring lead tightly against the inner wall of the power supply connection tube.

[0117] It should be noted that the temperature sensing lead 162 is used to connect to the temperature sensing module of the power supply device, so that the temperature at the front end can be sensed in real time during use. The power supply connection assembly 4 is used to connect the heating wire 15 lead and the temperature sensing lead 162 to form a fixed electrode structure for easy electrical connection with the power supply device.

[0118] In this embodiment, through steps S310 to S320, the temperature sensing lead 162 is welded to the inner wall of the fixed tube base 3, and the nesting assembly between the fixed tube base 3 and the external heat-conducting pipe 13 is completed. Through steps S330 to S350, the wiring of the heating lead 161 and the temperature sensing lead 162 in the power supply connection tube 41 and the connection operation with the electrode plate 43 are completed. The heating lead 161 and the temperature sensing lead 162 are fixed using the fixing plug 42 and the dust plug 44. At the same time, the connection and fixation of the power supply connection assembly 4 and the fixed tube base 3 are completed, thereby completing the assembly and manufacturing of the desoldering gun heating device 100. Among them, the power supply connection assembly 4 is located at the rear end of the fixed tube base 3, and its entire body is arranged along the first direction to be consistent with the heating core assembly 1 and the fixed tube base 3, so as to facilitate the assembly and fixation with the operating body when applied in the desoldering gun.

[0119] Furthermore, in a specific example, such as Figures 13 to 15 As shown, in the desoldering gun heating device 100, the outer wall of the external heat pipe 13 is provided with a wire groove 133 for accommodating the temperature sensing lead 162. The wire groove 133 extends axially along the external heat pipe 13, and its front end extends to the front end cap 131 of the external heat pipe 13. A circumferentially extending annular groove 134 is provided on the side wall of the external heat pipe 13 near the front end cap 131 to accommodate debris generated at the contact surface during assembly operations. Correspondingly, as... Figures 13 to 15 , Figure 16 , Figure 17 and Figure 21 As shown, in the manufacturing method of the desoldering gun heating device, step S320 specifically includes:

[0120] Step S321: Align the temperature sensing lead with the wire groove along the axial direction;

[0121] Step S322: The fixing tube seat is fitted onto the outside of the external heat pipe so that the fixing tube seat and the external heat pipe form an interference fit; wherein, the temperature measuring lead is inserted into the wire groove and abuts against the front end cap, and the annular groove is used to accommodate the debris generated on the contact surface during the fitting operation of the fixing tube seat and the external heat pipe.

[0122] In this embodiment, steps S321 to S322 are synchronized to form a nested connection between the fixed tube base 3 and the external heat pipe 13, and the two are fixed together by an interference fit, without the need for additional connection structures or welding operations. Specifically, the wire groove 133 is used to accommodate the temperature sensing lead 162 to avoid mutual interference; the annular groove 134 is used to accommodate debris generated at the contact surface of the fixed tube base 3 and the external heat pipe 13 during the nested assembly operation, preventing debris from remaining in the gap between the fixed tube base 3 and the front end cap 131 and affecting assembly accuracy. This also eliminates the need for cleaning operations during assembly, simplifying the assembly process and improving production efficiency.

[0123] Specifically, such as Figures 17 to 20 As shown, the fixing tube base 3 includes a fixing tube 31 made of 304 stainless steel and a fixing seat 32. The fixing seat 32 adopts a plate structure with a central hole and a mounting hole 321. The fixing seat 32 is sleeved on the side wall of the fixing tube 31 near the rear end through the central hole and welded to the fixing tube 31 so that the rear end of the desoldering tube 2 can pass through the central hole. The mounting hole 321 is eccentrically set relative to the central hole for mounting the power supply connection assembly 4.

[0124] Furthermore, in a specific example, such as Figure 22 and Figure 23 As shown, in the desoldering gun heating device 100, the power supply connection assembly specifically includes a power supply connection tube 41, a fixing plug 42, an electrode plate 43, and a dust plug 44; a first opening 411 is provided on the side wall of the power supply connection tube 41 near the front end for the heating lead 161 and the temperature measuring lead 162 to pass through. Correspondingly, as Figure 24 As shown, in the manufacturing method of the desoldering gun heating device, step S330 specifically includes:

[0125] Step S331: Insert the two heating leads and the temperature measuring lead through the first opening into the power supply connection tube and extend them out from the rear end of the power supply connection tube;

[0126] Step S332: Solder the front end of the power supply connector to the rear end of the fixed tube socket, and set the power supply connector and the desoldering tube in a staggered manner.

[0127] In this embodiment, the wiring operation of the heating lead 161 and the temperature measuring lead 162 in the power supply connecting pipe 41 is completed in step S331. A first opening 411 is provided on the power supply connecting pipe 41 to allow the heating lead 161 and the temperature measuring lead 162 to pass through the opening 411 into the power supply connecting pipe 41. Preferably, the first opening 411 is located on the side wall of the power supply connecting pipe 41 near the fixed pipe seat 3, and the first opening 411 faces the desoldering tube 2. Then, the connection and fixation between the power supply connecting pipe 41 and the fixed pipe seat 3 is completed in step S332. Since the rear end of the desoldering tube 2 is located behind the fixed pipe seat 3 and is used to connect the storage container, the power supply connecting pipe 41 and the desoldering tube 2 are staggered to reserve installation space for the storage container and avoid mutual interference. The power supply connecting pipe 41 is specifically made of 304 stainless steel and can be welded to the fixing seat 32 of the fixed pipe seat 3.

[0128] Furthermore, in a specific example, such as Figure 22 , Figure 23As shown, in the power supply connection assembly 4, the fixing plug 42 is detachably connected to the rear end of the power supply connection pipe 41; the fixing plug 42 has multiple axially penetrating second wire-passing holes 421, and multiple third grooves 422 are formed on the side wall of the fixing plug 42 near the rear end. Each third groove 422 communicates with a corresponding second wire-passing hole 421, and the inner side wall of the third groove 422 has a slot structure 423 for mounting the electrode plate 43. Accordingly, as Figure 25 As shown, in the manufacturing method of the desoldering gun heating device, step S340 specifically includes:

[0129] Step S341: Install one end of the fixing plug at the rear end of the power supply connection tube, and pass the two heating leads and the temperature measuring leads through the corresponding second wire holes into the corresponding third grooves respectively;

[0130] Step S342: Insert the corresponding electrode sheet into the slot structure of each third groove, and weld the two heating leads and the temperature measuring leads to the corresponding electrode sheet.

[0131] In this embodiment, a fixing plug 42 is detachably connected to the rear end of the power supply connection tube 41 to facilitate the assembly of the electrode plate 43 and to reserve space for the electrode plate 43 to form an electrical connection with the corresponding lead. Through steps S341 and S342, the wiring of the heating lead 161 and the temperature measuring lead 162 in the fixing plug 42 and the connection and fixation with the corresponding electrode plate 43 are completed. When applied in a desoldering gun, the power supply device can be directly connected to the corresponding electrode plate 43, thereby forming an electrical connection with the heating wire 15 and the temperature measuring lead 162, so that power supply and temperature measurement can be performed normally. To avoid short circuits, the two heating leads 161 are respectively passed through different second wire through holes 421 and connected and fixed to different electrode plates 43. To simplify the structure and connection, the temperature measuring lead 162 is arranged to share the same second wire through hole 421 with one of the heating leads 161 and is connected and fixed to the same electrode plate 43, so that both heating leads 161 and temperature measuring leads 162 can be electrically connected to the power supply device through the two electrode plates 43 respectively. Preferably, as shown below... Figure 22 , Figure 23 As shown, the two second wire holes 421 are arranged opposite each other in the transverse direction of the fixing plug 42, and the opening directions of the two third grooves 422 are opposite. When the corresponding electrode plate 43 is inserted into the corresponding slot structure 423, the inner sidewall of the electrode plate 43 abuts against the corresponding lead wire and presses the lead wire into the second wire hole 421, and the outer sidewall of the electrode plate 43 is exposed through the third groove 422 so as to form an electrical connection with the power supply device.

[0132] Specifically, electrode 43 adopts a copper sheet structure; temperature sensing lead 162 adopts a KP wire with a diameter of 0.6mm; and both heating lead 161 and temperature sensing lead 162 are covered with a high-temperature glass fiber insulating tube for contact sealing. Additionally, the fixing plug 42 can be made of a composite material of polybutylene terephthalate (PBT) and glass fiber (GF, 40% content). During mass production, the fixing plug 42 can be used to distinguish different batches of parts by rotating its angle and changing its color, preventing incorrect insertion during assembly and thus serving a foolproof function. Dust plug 44 adopts a silicone structure, which on the one hand seals the mounting hole 321 and the front end of the power supply connecting tube 41 to prevent dust or other impurities from entering; on the other hand, it can press the heating lead 161 and temperature sensing lead 162 tightly against the inner wall of the power supply connecting tube 41 for fixation.

[0133] The desoldering gun heating device manufactured using the above-described method of this application can effectively improve the high-temperature resistance and anti-aging performance of the heating core assembly, effectively prevent oxidation and breakage of the metal heating wire, and exhibit high reliability and low failure rate during long-term use. It also boasts superior structural stability and thermal uniformity, rapid heating and cooling speeds, and quick response during use, avoiding localized overheating or cold spots, making it suitable for the intermittent operation requirements of desoldering guns. Furthermore, all structures and materials comply with RoHS standards, making it environmentally friendly.

[0134] An embodiment of the second aspect of this application provides a desoldering gun heating device 100, such as... Figures 2 to 5As shown, the desoldering gun heating device 100 includes a heating core assembly 1, a desoldering tube 2, a fixing tube base 3, and a power supply connection assembly 4. The desoldering tube 2 passes through the heating core assembly 1. The front end of the desoldering tube 2 is used to contact and absorb solder, and the rear end of the desoldering tube 2 is used to connect to a storage container. The heat from the heating core assembly 1 raises the temperature of the desoldering tube 2, causing the solder to melt and be drawn into the storage container through the desoldering tube 2. The fixing tube base 3 includes a fixing tube 31 and a fixing seat 32. The fixing tube 31 is sleeved on the outside of the heating core assembly 1, and the fixing seat 32 is connected to the rear end of the fixing tube 31 so that when used in a desoldering gun, it can be connected and assembled with the operating body of the desoldering gun through the fixing tube base 3. The fixing seat 32 is provided with a mounting hole 321 that is misaligned with the fixing tube. The heating core assembly 1 specifically includes an inner heat-conducting tube 11, a ceramic heating tube 12, and an outer heat-conducting tube 13, which are nested from the inside to the outside. A desoldering tube 2 is inserted into the inner heat-conducting pipe 11 and fixedly connected to it. A ceramic heating tube 12 is sleeved on the outside of the inner heat-conducting pipe 11. A heating lead 161 is inserted inside the side wall of the ceramic heating tube 12, and a heating wire 15 is provided on the outer side wall of the ceramic heating tube 12. At least a portion of the heating lead 161 is exposed from the side wall of the ceramic heating tube 12 and connected to the power supply device, thereby electrically connecting the heating wire 15 to the power supply device and enabling it to heat up when powered on. An outer heat-conducting pipe 13 is sleeved on the outside of the ceramic heating tube 12, and a ceramic powder condensation layer 14 is filled between the ceramic heating tube 12 and the outer heat-conducting pipe 13. Figure 4 , Figure 5 As shown, the heating wire 15 and the connection point between the heating wire 15 and the heating lead 161 are covered inside the ceramic powder condensation layer 14, making the heat conduction more uniform. Simultaneously, the ceramic powder condensation layer 14 solidifies and fixes the ceramic heating tube 12 and the external heat pipe 13, making the overall structure of the heating core assembly 1 more stable. The power supply connection assembly 4 is connected to the mounting hole 321 of the fixing base 32 and extends to the rear side of the fixing base 32. The heating lead 161 and the temperature measuring lead 162 of the heating core assembly 1 are both connected to the power supply connection assembly 4, so that when applied to a desoldering gun, they form an electrical connection with the power supply device through the power supply connection assembly 4. In this embodiment, the desoldering gun heating device 100 is manufactured by the manufacturing method of the desoldering gun heating device in any of the embodiments of the first aspect described above, and has all the beneficial effects of the manufacturing method of the desoldering gun heating device in any of the embodiments of the first aspect described above.

[0135] It should be noted that the ceramic powder agglomerates by the process of pouring ceramic powder slurry, which is then vibrated and dried before solidification.

[0136] In one embodiment, such as Figure 4 , Figure 7As shown, the desoldering tube 2 and the inner heat pipe 11 are nested together, specifically using an interference fit to maintain a fixed positional relationship between them, thus eliminating the need for soldering or other connection structures and facilitating assembly. Preferably, as... Figure 7 In the example, a predetermined length region on the inner wall of the inner heat pipe 11 near its front end forms an interference fit with the outer wall of the desoldering tube 2. The predetermined length N can be set within the range of 25mm to 28mm, for example, 26.5mm, to ensure sufficient interference fit contact surface between the desoldering tube 2 and the inner heat pipe 11, thus ensuring connection stability. An annular sealing plate 21 is provided at the rear end of the desoldering tube 2 to provide a seal when the desoldering tube 2 is connected to the storage container. Preferably, both the inner heat pipe 11 and the outer heat pipe 13 are made of brass; the annular sealing plate 21 is specifically made of 304 stainless steel and is welded to the desoldering tube 2.

[0137] In one embodiment, such as Figure 8 , Figure 9 as well as Figure 13 , Figure 15 As shown, in the heating element assembly 1, a plurality of first wire-passing holes 121 are provided in the side wall of the ceramic heating tube 12. These first wire-passing holes 121 are spaced apart circumferentially along the ceramic heating tube 12 and all extend axially through the ceramic heating tube 12. Correspondingly, two heating leads 161 are respectively passed through different first wire-passing holes 121, and the rear end of the heating lead 161 is led out from the first wire-passing hole 121. A first groove 122 and a second groove 123 are formed on the outer side wall of the ceramic heating tube 12. The first groove 122 is located near the front end of the ceramic heating tube 12, and the second groove 123 is located near the rear end of the ceramic heating tube 12. The first groove 122 and the second groove 123 are respectively connected to different first wire-passing holes 121, for example... Figure 9 and Figure 10 In the example shown, the first groove 122 and the second groove 123 are spaced apart in the circumferential direction of the ceramic heating tube 12, respectively communicating with two adjacent first wire grooves 133 in the circumferential direction. The first groove 122 and the second groove 123 can be designed as follows: Figure 9 and Figure 10The flattened structure formed by the planar cut in the cylinder, i.e., the groove form that runs through both sides laterally, only requires cutting a pre-sized plane on the side wall of the cylinder, which is convenient for processing and shaping; of course, the first groove 122 and the second groove 123 can also be set as grooves with side walls on all four sides as needed. The heating wire 15 is spirally wound around the outer side wall of the ceramic heating tube 12, and the front end of the heating wire 15 extends into the first groove 122 and is connected to a corresponding heating lead 161, and the rear end of the heating wire 15 extends into the second groove 123 and is connected to another corresponding heating lead 161. Preferably, the ceramic heating tube 12 is made of alumina ceramic, the heating wire 15 is made of iron-chromium-aluminum alloy wire; the heating lead 161 is made of nickel wire with a diameter of 0.6mm; the heating wire 15 and the heating lead 161 are fixed by welding.

[0138] Furthermore, in a specific example, such as Figure 13 , Figure 15 As shown, the inner wall of the ceramic heating element 12 is provided with multiple protruding rib structures 124, each protruding rib structure 124 corresponding to each first wire passage hole 121. The cam structure extends along the axial direction of the ceramic heating element 12 and abuts against and is fixed to the outer wall of the inner heat-conducting pipe 11. A portion of each first wire passage hole 121 is located within the corresponding protruding rib structure 124, so that the protruding rib structure 124 provides space for the first wire passage hole 121, avoiding the inability to open the hole due to insufficient wall thickness of the ceramic heating element 12.

[0139] The ceramic heating tube 12 in this embodiment can separate different heating leads 161 from the heating wire 15, and a welding space for the heating wire 15 and heating leads 161 is reserved on the outer wall of the ceramic heating tube 12. This allows the two ends of the heating wire 15 to be connected to different heating leads 161 respectively, forming the input and output poles of the heating wire 15, facilitating electrical connection with the power supply device. Furthermore, the ceramic powder condensation layer 14 on the outer side of the ceramic heating tube 12 can completely cover the heating wire 15 and the connection point between the heating wire 15 and the heating leads 161, preventing the heating wire 15 from being exposed. This improves the high-temperature resistance and anti-aging performance of the heating core assembly 1, making the heating wire 15 less prone to breakage or insulation failure.

[0140] Furthermore, in a specific example, such as Figure 3 , Figure 13 , Figure 14 , Figure 15As shown, the external heat pipe 13 has a front end cap 131 with an end cap opening 132. The front end of the desoldering tube 2 extends through the front end cap 131 of the external heat pipe 13 to facilitate the absorption of solder. The front end cap 131 and the side wall of the external heat pipe 13, together with the outer side wall of the heating tube, form a filling cavity. During the production process, ceramic powder slurry is poured into the filling cavity, so that the ceramic powder slurry solidifies to form a ceramic powder agglomerate layer 14. The outer side wall of the external heat pipe 13 is provided with a wire groove 133, which extends axially along the external heat pipe 13 and extends to the front end cap 131 of the external heat pipe 13. Correspondingly, the inner wall of the fixed tube seat 3 is connected to a temperature measuring lead 162, and the rear end of the temperature measuring lead 162 is led out from the fixed tube seat 3. The fixed tube seat 3 is sleeved on the outside of the external heat conduction pipe 13 so as to use the wire groove 133 to accommodate the temperature measuring lead 162 and avoid the temperature measuring lead 162 from affecting the assembly between the fixed tube 31 of the fixed tube seat 3 and the external heat conduction pipe 13.

[0141] Furthermore, in a specific example, such as Figure 3 , Figure 13 , Figure 14 , Figure 15 As shown, the fixed tube 31 of the fixed tube base 3 and the external heat conduction tube 13 are connected and fixed by an interference fit, without the need for additional connection structures or welding operations. An annular groove 134 extending circumferentially is provided on the side wall of the external heat conduction tube 13 near the front end cap 131 to accommodate debris generated at the contact surface during assembly of the fixed tube base 3 and the external heat conduction tube 13. The annular groove 134, by accommodating debris generated at the contact surface of the fixed tube 31 and the external heat conduction tube 13 during nested assembly, prevents debris from remaining in the gap between the fixed tube 31 and the front end cap 131, thus affecting assembly accuracy. It also eliminates the need for cleaning during assembly, simplifying the assembly process and improving production efficiency.

[0142] Furthermore, in a specific example, such as Figure 2 , Figure 4 , Figure 19 , Figure 20 , Figure 22 , Figure 23As shown, the power supply connection assembly 4 specifically includes a power supply connection tube 41, a fixing plug 42, and multiple electrode plates 43. One end of the power supply connection tube 41 is inserted into the mounting hole 321 on the fixing base 32 and connected and fixed to the fixing base 32, for example, by welding. A first opening 411 is provided on the side wall of the power supply connection tube 41 near the front end for the heating lead 161 and the temperature measuring lead 162 to pass through. The rear end of the power supply connection tube 41 is detachably connected to the fixing plug 42, which is provided with multiple second wire passage holes 421 that extend axially to facilitate wiring of the heating lead 161 and the temperature measuring lead 162. The two heating leads 161 and the temperature measuring lead 162 are inserted into the power supply connection tube 41 through the first opening 411 and respectively into the corresponding second wire passage holes 421. Multiple electrode plates 43 are respectively inserted into different second wire guide holes 421. Heating leads 161 and temperature sensing leads 162 are connected and fixed to their corresponding electrode plates 43, for example, by soldering. By providing different second wire guide holes 421, two heating leads 161 can be separated, and space can be reserved for the electrode plates 43 to form electrical connections with their corresponding leads. When applied in a desoldering gun, the power supply device can be directly connected to the corresponding electrode plate 43, thereby forming an electrical connection with the heating wire 15 and the temperature sensing lead 162, enabling normal power supply and temperature measurement.

[0143] Furthermore, in a specific example, such as Figure 19 , Figure 20 , Figure 22 and Figure 23 As shown, in the power supply connection assembly 4, a plurality of third grooves 422 are provided on the side wall of the fixing plug 42 near the rear end. These third grooves 422 are spaced apart circumferentially along the power supply connection pipe 41, and each third groove 422 communicates with a corresponding second wire hole 421. Furthermore, a slot structure 423 is provided on the inner side wall of each third groove 422. Correspondingly, a plurality of electrode pieces 43 are respectively inserted into the slot structures 423 in different third grooves 422. One side of the electrode piece 43 is connected to the heating lead 161 and / or the temperature measuring lead 162, for example, by welding. The other side of the electrode piece 43 is exposed through the third groove 422 for connection to the power supply device. Preferably, as... Figure 21 , Figure 22As shown, two second wire-passing holes 421 are arranged opposite each other in the lateral direction of the fixing plug 42, and the opening directions of the two third grooves 422 are opposite. When the corresponding electrode plate 43 is inserted into the corresponding slot structure 423, the inner sidewall of the electrode plate 43 abuts against the corresponding lead wire and presses the lead wire into the second wire-passing groove 133. By providing the third groove 422 and the slot structure 423 in the fixing plug 42, the electrode plate 43 can be assembled and connected to the corresponding lead wire and power supply device. The dust plug 44 passes through the mounting hole 321 from the front side of the fixing base 32 and is inserted into the power supply connecting pipe 41. The dust plug 44 presses the heating lead wire 161 and the temperature measuring lead wire 162 against the inner sidewall of the power supply connecting pipe 41 for fixing. At the same time, the dust plug 44 can also seal the mounting hole 321 and the front end of the power supply connecting pipe 41 to prevent dust or other impurities from entering. The dust plug 44 adopts a flexible silicone structure for easy assembly.

[0144] In a specific example, such as Figure 19 , Figure 20 , Figure 22 and Figure 23 As shown, the two heating leads 161 are connected to different electrode plates 43, serving as the input and output terminals of the heating wire 15, respectively. To simplify the structure and connections, one heating lead 161 and the temperature sensing lead 162 are arranged in the same second wire hole 421 and fixed to the same electrode plate 43, allowing both heating leads 161 and temperature sensing leads 162 to be electrically connected to the power supply device via the two electrode plates 43.

[0145] An embodiment of the third aspect of this application provides a desoldering gun 500, such as Figures 2 to 4 as well as Figure 26 As shown, the desoldering gun includes an operating body 510, a desoldering gun heating device 100 as described in any of the embodiments of the first aspect, and a power supply device 520. The operating body 510 serves as the base structure of the desoldering gun 500, supporting the heating core assembly 1, the power supply device 520, and corresponding auxiliary structures. The operating body 510 also allows for manual operation by the user. The power supply device 520 is electrically connected to the power supply connection component 4 of the desoldering gun heating device 100, supplying power to the heating core assembly 1 via the power supply connection component 4. This causes the heating wire 15 of the heating core assembly 1 to heat up when energized, thereby raising the temperature of the front end of the desoldering tube 2. This melts the solder material in contact with the front end of the desoldering tube 2, which is then drawn into a corresponding storage container through the desoldering tube 2.

[0146] Furthermore, when the power supply connection component 4 of the desoldering gun heating device 100 is connected to the temperature sensing lead 162, the power supply device 520 also has a corresponding temperature sensing module. The temperature sensing module is electrically connected to the temperature sensing lead 162 through the power supply connection component 4 to sense the temperature of the heating core component 1.

[0147] It should be noted that in practical applications, the rear end of the desoldering tube 2 is connected to a storage container to hold the desoldering material.

[0148] Furthermore, the desoldering gun 500 in this embodiment also has all the beneficial effects of the desoldering gun heating device 100 in any of the above embodiments, which will not be repeated here.

[0149] This document describes various exemplary embodiments with reference to them. However, those skilled in the art will recognize that changes and modifications can be made to the exemplary embodiments without departing from the scope of this document. For example, various operational steps and components for performing operational steps can be implemented in different ways depending on the specific application or considering any number of cost functions associated with the operation of the system (e.g., one or more steps can be deleted, modified, or combined with other steps).

[0150] While the principles herein have been illustrated in various embodiments, numerous modifications to the structures, arrangements, proportions, elements, materials, and components, particularly suited to specific environments and operational requirements, may be used without departing from the principles and scope of this disclosure. These modifications and other alterations or alterations will be included within the scope of this document. Those skilled in the art will recognize that many changes can be made to the details of the above embodiments without departing from the fundamental principles of this application.

Claims

1. A method for manufacturing a heating device for a desoldering gun, characterized in that, The desoldering gun heating device includes a desoldering tube, a fixed tube base, a heating element assembly, and a power supply connection assembly; The manufacturing method of the desoldering gun heating device includes: Step S100: Connect and fix each unassembled structural component of the heating core assembly to the desoldering tube; Step S200: Ceramic powder slurry is injected between the ceramic heating tube and the external heat conduction tube nested in the heating core assembly, and the ceramic heating tube and the external heat conduction tube are solidified into a whole by the ceramic powder slurry to form the heating core assembly; Step S300: Connect and fix the fixed tube base to the heating core assembly and the power supply connection assembly, and connect and assemble the power supply connection assembly with the corresponding lead wire to form a desoldering gun heating device.

2. The manufacturing method of the desoldering gun heating device according to claim 1, characterized in that, The unassembled structural components of the heating core assembly include an inner heat pipe, a ceramic heating pipe, an outer heat pipe, a heating wire, and heating leads; Step S100: Connecting and fixing each unassembled structural component of the heating core assembly to the desoldering tube, including: Step S110: Attach the inner heat pipe to the outside of the desoldering tube; Step S120: Insert the inner heat-conducting tube and the desoldering tube into the ceramic heating tube, and assemble and fix the heating wire and heating lead wire at the preset positions on the ceramic heating tube; Step S130: The external heat pipe is sleeved on the outside of the ceramic heating tube, and the front end of the desoldering tube is made to pass through the front end cap of the external heat pipe; wherein, the space between the front end cap and the inner wall of the external heat pipe and the outer wall of the ceramic heating tube forms a filling cavity.

3. The manufacturing method of the desoldering gun heating device according to claim 2, characterized in that, Step S110: Attaching the inner heat-conducting tube to the outside of the desoldering tube includes: Step S111: Weld an annular sealing plate to the rear side wall of the desoldering tube, wherein the annular sealing plate is in communication with the desoldering tube; Step S112: The inner heat pipe is sleeved from the front end of the desoldering tube onto the outside of the desoldering tube, and the preset length area on the inner sidewall of the inner heat pipe near the front end is fixed with the outer sidewall of the desoldering tube by interference fit. as well as, The ceramic heating tube has a plurality of first wire-passing holes spaced circumferentially on its inner sidewall. The first wire-passing holes are axially penetrating, and the inner sidewall of the ceramic heating tube has a convex ridge structure extending axially at the position corresponding to each of the first wire-passing holes. The outer sidewall of the ceramic heating tube has a first groove near the front end and a second groove near the rear end. The first groove and the second groove are respectively connected to different first wire-passing holes. Step S120: Inserting the inner heat-conducting tube and the desoldering tube into the ceramic heating tube, and assembling and fixing the heating wire and heating lead wire at the preset positions on the ceramic heating tube, including: Step S121: Insert the inner heat-conducting tube and the desoldering tube into the ceramic heating tube, and make the convex structure abut against the inner heat-conducting tube; Step S122: The heating wire is wound in a spiral shape around the outer wall of the ceramic heating tube. The two heating leads are respectively passed through different first wire holes. One of the heating leads is welded and fixed to the front end of the heating wire in the first groove, and the other heating lead is welded and fixed to the rear end of the heating wire in the second groove.

4. The manufacturing method of the desoldering gun heating device according to claim 3, characterized in that, Step S200: Ceramic powder slurry is injected between the ceramic heating tube and the external heat-conducting tube nested in the heating core assembly, and the ceramic powder slurry is used to solidify the ceramic heating tube and the external heat-conducting tube into a whole to form the heating core assembly, including: Step S210: Ceramic powder slurry is injected from the rear end of the external heat pipe into the injection cavity between the ceramic heating tube and the external heat pipe; wherein, the ceramic powder slurry is a solution of alumina ceramic powder, neutral silica solution, and sodium polyacrylate mixed in a volume ratio of 100:100:

1. Step S220: Place the completed infusion structure in a vibratory dish for vibration to allow the ceramic powder in the ceramic powder slurry to settle; wherein the vibration frequency of the vibration operation is 20Hz to 30Hz and the vibration duration is 30 minutes. Step S230: Place the vibrated overall structure in an oven for baking to evaporate the moisture in the ceramic powder slurry and solidify the ceramic powder, and solidify the external heat pipe, the ceramic heating tube, the heating wire, and the heating lead wire to form the assembled heating core assembly; wherein the baking temperature of the baking operation is 100°C and the baking time is 1 hour.

5. The manufacturing method of the desoldering gun heating device according to claim 3, characterized in that, Step S300: Connecting and fixing the fixed tube base to the heating core assembly and the power supply connection assembly, and connecting and assembling the power supply connection assembly to the corresponding lead wire to form a desoldering gun heating device, including: Step S310: Pass one end of the temperature measuring lead through the fixed tube base and weld it to the inner wall of the fixed tube base. Step S320: Fit the fixing tube seat onto the outside of the external heat pipe; Step S330: Insert the heating lead and the temperature measuring lead into the power supply connection tube of the power supply connection assembly, and weld the power supply connection tube to the rear end of the fixed tube seat; Step S340: Install the fixing plug and electrode plate at the rear end of the power supply connection tube, and weld and fix the different electrode plates to the corresponding heating lead and temperature measuring lead respectively; Step S350: Install the dust plug at the front end of the power supply connection pipe, and use the dust plug to press the heating lead and the temperature measuring lead tightly against the inner wall of the power supply connection pipe.

6. The method for manufacturing the desoldering gun heating device according to claim 5, characterized in that, The outer wall of the external heat pipe has a wire passage groove extending axially, and the front end of the wire passage groove extends to the front end cap. The sidewall of the external heat pipe has an annular groove extending circumferentially near the front end cap. Step S320: Fitting the fixing sleeve onto the outside of the external heat pipe includes: Step S321: Align the temperature measuring lead with the wire groove along the axial direction; Step S322: The fixing tube seat is fitted onto the outside of the external heat pipe so that the fixing tube seat and the external heat pipe form an interference fit; wherein, the temperature measuring lead is inserted into the wire groove and abuts against the front end cap, and the annular groove is used to accommodate the debris generated on the contact surface when the fixing tube seat and the external heat pipe are fitted together.

7. The method for manufacturing the desoldering gun heating device according to claim 5, characterized in that, The power supply connection assembly includes a power supply connection tube, a fixing plug, an electrode plate, and a dust plug; a first opening is provided on the side wall of the power supply connection tube near the front end; Step S330: Passing the heating lead and the temperature measuring lead through the power supply connection tube of the power supply connection assembly, and welding the power supply connection tube to the rear end of the fixed tube base, includes: Step S331: Insert the two heating leads and the temperature measuring lead through the first opening into the power supply connection tube and extend them out from the rear end of the power supply connection tube; Step S332: Weld the front end of the power supply connector to the rear end of the fixed tube base, and the power supply connector and the desoldering tube are misaligned.

8. The method for manufacturing the desoldering gun heating device according to claim 7, characterized in that, The fixing plug has multiple second wire-passing holes that extend axially, and multiple third grooves are provided on the side wall of the fixing plug near the rear end. Each third groove communicates with a corresponding second wire-passing hole, and the inner side wall of the third groove has a slot structure. Step S340: Install the fixing plug and electrode plates at the rear end of the power supply connection pipe, and weld and fix the different electrode plates to the corresponding heating leads and temperature measuring leads respectively, including: Step S341: Install one end of the fixing plug onto the rear end of the power supply connection tube, and pass the two heating leads and the temperature measuring lead through the corresponding second wire holes into the corresponding third grooves respectively; Step S342: Insert the corresponding electrode sheet into the slot structure of each of the third grooves, and weld and fix the two heating leads and the temperature measuring leads to the corresponding electrode sheets.

9. A heating device for a desoldering gun, characterized in that, include: A desoldering tube, wherein an annular sealing plate is connected to the side wall of the desoldering tube near the rear end; A heating element assembly is sleeved on the outside of the desoldering tube. The heating element assembly has heating leads, and the heating leads and temperature measuring leads extend from the rear end of the heating element assembly. A fixing tube base includes a fixing tube and a fixing seat. The fixing tube is sleeved on the outside of the heating core assembly, and the fixing seat is connected to the rear end of the fixing tube. The fixing seat has a mounting hole that is offset from the fixing tube. A power supply connection assembly is connected at one end to the mounting hole and extends axially toward the rear of the fixed tube base; wherein the heating lead and the temperature measuring lead pass through the power supply connection assembly and are connected to the corresponding electrode plate at the rear end of the power supply connection assembly. The desoldering gun heating device is manufactured according to the manufacturing method of the desoldering gun heating device as described in any one of claims 1 to 8.

10. A desoldering gun, characterized in that, include: Operating entity; The desoldering gun heating device as described in claim 9 is connected to the operating body; The power supply device is electrically connected to the power supply connection assembly of the desoldering gun heating device to supply power to the heating core assembly through the power supply connection assembly.

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