Heat Gun Formed By Wave-type Heating Bodies

Abstract

Provided is a heat gun formed by wave-type heating bodies. The heat gun includes a housing assembly and a heating assembly mounted in the housing assembly, where an air supply assembly is fixedly mounted in the housing assembly. The heating wire is wound into a wave-type structure by dedicated equipment. Compared with a traditional slingshot-wire-type structure, the wave-type structure is capable of resisting deformation of the heating wire at a high temperature and in a process from a high temperature to a normal temperature such that defects caused by thermal expansion and contraction when the heating wire operates or stops can be avoided. After the wave-type structure of the heating wire is wound around a mica plate, a direction of the wave-type structure is exactly perpendicular to a direction of an air channel such that wind generated by a fan behind can blow out heat with maximum efficiency.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of heat guns, and particularly relates to a heat gun formed by wave-type heating bodies.BACKGROUND

[0002] A heat gun is a tool for welding and removing elements mainly by means of hot air blown by an electrified heating resistance wire. A heating core is a main component of the heat gun for blowing the hot air. In order to reach a certain temperature at an air outlet of the heat gun, a plurality of heating wires are required to be mounted on the heating core component. A traditional heating wire is of a slingshot-wire-type structure manually wound. For the specific structure, refer to FIG. 1 of the Description. However, the above structure makes it difficult to ensure consistency of density when the heating wire is wound and mounted. A thermal expansion coefficient of ceramic material is different from that of the heating wire. Therefore, the heating wire generates heat in the operating process and deforms after operating for a long time. Since the heating wire expands with heat and contracts with cold, adjacent heating wires may be in contact with each other and then form a short circuit to be fused, thereby affecting service life of the heat gun. Nearly half of the heating wire is buried in a ceramic support, such that heat dissipation efficiency of an air channel is reduced. Moreover, the heating core reaches a maximum temperature at a front end, and usually has no heat dissipation structure, such that heat is gathered at the front end, and the heating wire is damaged. On this basis, a heat gun capable of effectively dissipating heat is provided.SUMMARY

[0003] An objective of the present disclosure is to provide a heat gun formed by wave-type heating bodies, so as to solve the problems in the Background.

[0004] In order to realize the above objective, the present disclosure provides a technical solution as follows: a heat gun formed by wave-type heating bodies includes a housing assembly and a heating assembly mounted in the housing assembly. An air supply assembly is further fixedly mounted in the housing assembly. The air supply assembly is fixedly connected to one end of the heating assembly. An air output nozzle is sleeved at a front end of the housing assembly. An end cover is mounted at a tail end of the housing assembly. A temperature adjustment knob is mounted in a middle of the end cover. Air intake holes are formed on two sides of the end cover. The air intake holes are in communication with an air intake portion of the air supply assembly.

[0005] The heating assembly includes a support structure formed by a first mica plate and a second mica plate. Heating wires of wave-shaped structures are wound around surfaces of the first mica plate and the second mica plate. A heat sink is fixedly mounted at one end of the first mica plate and one end of the second mica plate close to the air output nozzle respectively.

[0006] As a preferred technical solution of the present disclosure, the housing assembly includes two mounting shells and two handle housings. The two handle housings are correspondingly mounted at bottoms of one ends of the two mounting shells respectively. The two mounting shells are connected to form a mounting cylinder. The two handle housings are connected to form a grip. Support plates are fixedly mounted in the two mounting shells. Cambered grooves are formed on surfaces of the support plates. Semi-annular grooves are formed at front ends of the two mounting shells. The air output nozzle is mounted in the two semi-annular grooves.

[0007] As a preferred technical solution of the present disclosure, the heating assembly further includes an air guide cylinder mounted in the mounting cylinder. A heat insulation sleeve is arranged on an inner wall of the air guide cylinder. The first mica plate and the second mica plate are mounted in the heat insulation sleeve. The first mica plate and the second mica plate are connected to each other in a perpendicular manner.

[0008] As a preferred technical solution of the present disclosure, the heating wires are wound by dedicated equipment.

[0009] As a preferred technical solution of the present disclosure, a plurality of sawtooth grooves are formed on the surfaces of the first mica plate and the second mica plate. The heating wires are embedded in the sawtooth grooves. Four air channels are formed between the first mica plate and the second mica plate and the heat insulation sleeve. A direction of the heating wire is perpendicular to a direction of the air channel.

[0010] As a preferred technical solution of the present disclosure, the air supply assembly includes connection covers mounted in the cambered grooves formed on the surfaces of the support plates. A support frame is connected to one side of each of the connection covers. Rotary motors are fixedly mounted in the support frames. Fans are fixedly mounted at output ends of the rotary motors. The fans are arranged in the connection covers. Mounting holes are formed on inner walls of the connection covers and one end of the air guide cylinder. Mounting bolts are in threaded connection to interiors of the mounting holes.

[0011] As a preferred technical solution of the present disclosure, the support frames are formed by connection discs and mounting sleeves. A plurality of connection sheets are connected to one ends of the mounting sleeves. One sides of the plurality of connection sheets are fixedly connected to surfaces of the connection discs. A plurality of air inlets are formed at joints between the connection sheets and the connection discs. The air inlets are in communication with external airflow through air intake holes.

[0012] As a preferred technical solution of the present disclosure, two limiting buckles are symmetrically connected to an edge of each connection disc. Anti-falling claws are fixedly connected to two sides of a surface of each connection cover. The anti-falling claws are inserted into the limiting buckles.

[0013] As a preferred technical solution of the present disclosure, connection holes are formed on surfaces of the connection sheets. Connection bolts are inserted into the connection holes. Two bolt columns are fixedly connected to an inner wall of one of the mounting shells. The connection bolts are in threaded connection to interiors of the bolt columns.

[0014] As a preferred technical solution of the present disclosure, annular grooves are symmetrically formed on inner walls of tail ends of the two mounting shells. A mounting ring is connected to an edge of the end cover. The mounting ring is inserted into the annular grooves.

[0015] As a preferred technical solution of the present disclosure, a plurality of plastic strips are connected in sequence along an edge of one of the mounting shells. Butt-joint columns are arranged between adjacent plastic strips. A plurality of fusion bonding grooves are formed in sequence along an edge of the other one of the mounting housings. Butt-joint holes are formed between adjacent fusion bonding grooves. The butt-joint columns are inserted into the butt-joint holes.

[0016] As a preferred technical solution of the present disclosure, temperature values for indicating temperatures are carved on a surface of the end cover. The temperature adjustment knob corresponds to the temperature values.

[0017] As a preferred technical solution of the present disclosure, reinforcing ribs are connected to inner walls of the two mounting shells.

[0018] As a preferred technical solution of the present disclosure, an integrated control board is fixedly mounted in the end cover. The heating wires, the rotary motor and the temperature adjustment knob are all in control connection to the integrated control board. Avoidance grooves are formed on one sides of the two handle housings. Switches are mounted in the avoidance grooves. A plug is further mounted in the grip. The integrated control board is in wire connection to the plug by means of the switches.

[0019] Compared with the prior art, the present disclosure has beneficial effects as follows:

[0020] (1) the first mica plate and the second mica plate are connected to each other in a perpendicular manner, such that a support structure for supporting the heating wires is formed. A plurality of sawtooth grooves are formed on the surfaces of the first mica plate and the second mica plate, and the heating wires are embedded in the sawtooth grooves, such that the heating wires are stably mounted. The heating wire is wound into a wave-type structure by dedicated equipment. Compared with a traditional slingshot-wire-type structure, the wave-type structure is capable of resisting deformation of the heating wire at a high temperature and in a process from a high temperature to a normal temperature such that defects caused by thermal expansion and contraction when the heating wire operates or stops can be avoided. After the wave-type structure of the heating wire is wound around a mica plate, a direction of the wave-type structure is exactly perpendicular to a direction of an air channel such that wind generated by a fan behind can blow out heat with maximum efficiency. The heating wire resists thermal expansion and contraction by means of the wave-type structure, and will not deform even though the heating wire operates for a long time such that the situation that the heating wire deforms after operating for a long time and then forms a short circuit to be fused can be avoided. Moreover, a heat sink is added at the front end of the first mica plate and the front end of the second mica plate, and is capable of effectively dissipating heat at the front end such that the situation that the heat is gathered at the front end to damage the heating wire can be avoided.

[0021] (2) A plurality of plastic strips are connected to the edge of one of the mounting shells, and butt-joint columns are connected between the plurality of plastic strips. Fusion bonding grooves are formed at the edge of the other one of the mounting shells, and butt-joint holes are formed between the fusion bonding groove. When the two mounting shells are connected, the butt-joint columns are inserted into the butt-joint holes, such that the plastic strips are inserted into the fusion bonding grooves. The mounting shells are placed in an ultrasonic welding apparatus, and the plastic strips are fused in the fusion bonding grooves, such that the entire structure has better moisture-proof and dust-proof functions.

[0022] (3) Two limiting buckles are symmetrically connected to the edge of the connection disc, and two sides of the surface of the connection cover are inserted into the limiting buckles by means of anti-falling claws, such that the connection disc is connected to the connection cover. Connection holes are formed on connection sheets on the surface of the connection disc, and connection bolts are inserted into the connection holes. Bolt columns are connected to the inner walls of the mounting shells, and the connection bolts are in threaded connection to the bolt columns, such that the support frame is fixedly connected to the mounting shells, and the mounting stability of the air supply assembly is ensured.BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings serve as a constituent part of the description to provide a further understanding of the present disclosure. The accompanying drawings and examples of the present disclosure are used for explaining the present disclosure and do not constitute a limitation on the present disclosure. In the figures,

[0024] FIG. 1 is a schematic structural diagram of a heating body in the prior art.

[0025] FIG. 2 is a schematic diagram of an entire structure according to the present disclosure.

[0026] FIG. 3 is a schematic diagram of a split structure according to the present disclosure.

[0027] FIG. 4 is a schematic structural diagram of a heating assembly according to the present disclosure.

[0028] FIG. 5 is a schematic structural diagram of an air supply assembly according to the present disclosure.

[0029] FIG. 6 is a schematic diagram of a mounting structure of an air guide cylinder and a connection cover according to the present disclosure.

[0030] FIG. 7 is a schematic diagram of a mounting structure of a switch according to the present disclosure.

[0031] FIG. 8 is a schematic structural diagram of a mounting position of a plastic strip according to the present disclosure.

[0032] FIG. 9 is a schematic structural diagram of a provision position of a fusion bonding groove according to the present disclosure.

[0033] In the figures: 1. housing assembly, 11. mounting shell, 12. handle housing, 121. avoidance groove, 122. switch, 13. mounting cylinder, 14. grip, 15. support plate, 16. cambered groove, 17. semi-annular groove, 18. annular groove, 19. plastic strip, 110. butt-joint column, 111. fusion bonding groove, 112. butt-joint hole, 113. reinforcing rib, 2. heating assembly, 21. air guide cylinder, 22. heat insulation sleeve, 23. first mica plate, 24. second mica plate, 25. sawtooth groove, 26. heating wire, 27. heat sink, 3. air supply assembly, 31. connection cover, 32. support frame, 321. connection disc, 322. mounting sleeve, 323. connection sheet, 324. air inlet, 325. limiting buckle, 326. anti-falling claw, 327. connection hole, 328. connection bolt, 329. bolt column, 33. rotary motor, 34. fan, 35. mounting hole, 36. mounting bolt, 4. air output nozzle, 5. end cover, 51. mounting ring, 52. temperature value, 6. temperature adjustment knob, 7. air intake hole, 8. integrated control board, and 9. plug.DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0034] Technical solutions of examples of the present disclosure will be clearly and completely described below in combination with accompanying drawings in the examples of the present disclosure. Apparently, the described examples are merely some examples rather than all examples of the present disclosure. All other examples derived by those of ordinary skill in the art on the basis of examples of the present disclosure without making inventive efforts all fall within the scope of protection of the present disclosure.

[0035] With reference to FIGS. 2-9, the present disclosure provides a technical solution as follows: a heat gun formed by wave-type heating bodies includes a housing assembly 1 and a heating assembly 2 mounted in the housing assembly 1. An air supply assembly 3 is further fixedly mounted in the housing assembly 1. The air supply assembly 3 is fixedly connected to one end of the heating assembly 2. An air output nozzle 4 is sleeved at a front end of the housing assembly 1. An end cover 5 is mounted at a tail end of the housing assembly 1. A temperature adjustment knob 6 is mounted in a middle of the end cover 5. Air intake holes 7 are formed on two sides of the end cover 5. The air intake holes 7 are in communication with an air intake portion of the air supply assembly 3.

[0036] The heating assembly 2 includes a support structure formed by a first mica plate 23 and a second mica plate 24. Heating wires 26 of wave-shaped structures are wound around surfaces of the first mica plate 23 and the second mica plate 24. A heat sink 27 is fixedly mounted at one end of the first mica plate 23 and one end of the second mica plate 24 close to the air output nozzle 4.

[0037] With reference to FIGS. 1 and 2, in the example, the housing assembly 1 includes two mounting shells 11 and two handle housings 12. The two handle housings 12 are correspondingly mounted at bottoms of one ends of the two mounting shells 11 respectively. The two mounting shells 11 are connected to form a mounting cylinder 13. The two handle housings 12 are connected to form a grip 14. Support plates 15 are fixedly mounted in the two mounting shells 11. Cambered grooves 16 are formed on surfaces of the support plates 15. Semi-annular grooves 17 are formed at front ends of the two mounting shells 11. The air output nozzle 4 is mounted in the two semi-annular grooves 17.

[0038] Specifically, the housing assembly 1 includes two mounting shells 11 and two handle housings 12. The two handles are mounted at bottoms of one ends of the mounting shells 11 respectively. The two mounting shells 11 are spliced to form a mounting cylinder 13, and an internal space of the mounting cylinder 13 provides a mounting space for the air supply assembly 3 and the heating assembly 2. The two handle housings 12 are connected to form a grip 14 such that the heat gun can be conveniently held for use by means of the grip 14. Support plates 15 are mounted in the two mounting shells 11. Cambered grooves 16 are formed on surfaces of the support plates 15 such that a mounting support can be provided for the air supply assembly 3. The air output nozzle 4 is mounted in the semi-annular grooves 17 formed at the front ends of the mounting shells 11 such that air supply guidance can be achieved by means of the air output nozzle 4.

[0039] With reference to FIGS. 2 and 3, in the example, the heating assembly 2 further includes an air guide cylinder 21 mounted in the mounting cylinder 13. A heat insulation sleeve 22 is arranged on an inner wall of the air guide cylinder 21. The first mica plate 23 and the second mica plate 24 are mounted in the heat insulation sleeve 22. The first mica plate 23 and the second mica plate 24 are connected to each other in a perpendicular manner.

[0040] Specifically, the heating assembly 2 is arranged, the air guide cylinder 21 is mounted in the mounting cylinder 13, and the first mica plate 23 and the second mica plate 24 are connected to each other in a perpendicular manner, such that a support structure for supporting the heating wires 26 is mounted in the air guide cylinder 21. A plurality of sawtooth grooves 25 are formed on the surfaces of the first mica plate 23 and the second mica plate 24, and the heating wires 26 are embedded in the sawtooth grooves 25, such that the heating wires 26 are stably mounted. Moreover, a heat insulation sleeve 22 is arranged on the inner wall of the air guide cylinder 21 and the heat insulation sleeve 22 has a desirable heat insulation effect, such that the situation that a high temperature output by the heating wires 26 is transmitted to a surface of the air guide cylinder 21 to melt the housing assembly 1 is avoided.

[0041] With reference to FIGS. 2 and 3, a plurality of sawtooth grooves 25 are formed on the surfaces of the first mica plate 23 and the second mica plate 24. The heating wires 26 are embedded in the sawtooth grooves 25. Four air channels are formed between the first mica plate 23 and the second mica plate 24 and the heat insulation sleeve 22. A direction of the heating wire 26 is perpendicular to a direction of the air channel.

[0042] Specifically, the heating wires 26 can be conveniently fixed by means of the sawtooth grooves 25. Since the heating wires 26 have a wave-shaped structure, when generating heat during operation, the heating wires 26 are capable of resisting, by means of the structures, deformation at a high temperature and in a process from a high temperature to a normal temperature, the situation that the heating wires 26 in adjacent sawtooth grooves 25 thermally expand due to heating to be attached to each other to cause a short circuit can be prevented, and further service life of the heat gun can be improved. After the wave-shaped heating wires 26 are wound and mounted in the sawtooth grooves 25, since four air channels formed between the heating wires 26 and the first mica plate 23 are perpendicular, the second mica plate 24 and the heat insulation sleeve 22, wind generated by a rear fan 34 during operation can blow out heat with maximum efficiency, and heat dissipation efficiency of the air channels is effectively improved. Moreover, the wave-shaped heating wire 26 is compared with a heating wire of a spring-wire structure in the prior art recited in FIG. 1 of the description, and the wave-shaped heating wire 26 occupies a less volume of the air channel such that the heat dissipation efficiency of the air channel can be further improved.

[0043] With reference to FIGS. 3 and 4, in the example, the air supply assembly 3 includes connection covers 31 mounted in the cambered grooves 16 formed on the surfaces of the support plates 15. Support frames 32 are connected to one sides of the connection covers 31. Rotary motors 33 are fixedly mounted in the support frames 32. Fans 34 are fixedly mounted at output ends of the rotary motors 33. The fans 34 are arranged in the connection covers 31. Mounting holes 35 are formed on inner walls of the connection covers 31 and one end of the air guide cylinder 21. Mounting bolts 36 are in threaded connection to interiors of the mounting holes 35.

[0044] Specifically, the air supply assembly 3 is arranged, and a connection cover 31 is connected to the support plate 15 through a cambered groove 16 formed on the surface thereof. A support frame 32 is connected to one side of the connection cover 31, and a rotary motor 33 is mounted in the support frame 32. The rotary motor 33 rotates to drive a fan 34 at an output end to rotate, and the fan 34 rotates in the connection cover 31 such that airflow can be blown to the air guide cylinder 21 by means of the connection cover 31, and heat can be blown out. Mounting holes 35 are correspondingly formed on the inner wall of the connection cover 31 and at one end of the air guide cylinder 21, and mounting bolts 36 are inserted into the mounting holes 35, such that the connection cover 31 is fixedly connected to the air guide cylinder 21.

[0045] With reference to FIGS. 2-4, the support frames 32 are formed by connection discs 321 and mounting sleeves 322. A plurality of connection sheets 323 are connected to one ends of the mounting sleeves 322. One sides of the plurality of connection sheets 323 are fixedly connected to surfaces of the connection discs 321. A plurality of air inlets 324 are formed at joints between the connection sheets 323 and the connection discs 321. The air inlets 324 are in communication with external airflow through air intake holes 7.

[0046] Specifically, the support frame 32 is formed by connecting a connection disc 321 and a mounting sleeve 322. One end of the mounting sleeve 322 is connected to the connection disc 321 by means of a plurality of connection sheets 323, such a plurality of air inlets 324 are formed on the connection sheets 323 around joints of the connect discs 321, and the air intake holes 7 formed on two sides of the end cover 5 is in communication with the air inlets 324. When the rotary motor 33 drives the fan 34 to rotate, a negative pressure is formed in the connection cover 31 such that external airflow can enter the air guide cylinder 21 by means of the connection cover 31, and the airflow circulates.

[0047] With reference to FIGS. 4 and 6, in the example, two limiting buckles 325 are symmetrically connected to an edge of each connection disc 321. Anti-falling claws 326 are fixedly connected to two sides of a surface of each connection cover 31. The anti-falling claws 326 are inserted into the limiting buckles 325. Connection holes 327 are formed on surfaces of the connection sheets 323. Connection bolts 328 are inserted into the connection holes 327. Two bolt columns 329 are fixedly connected to an inner wall of one of the mounting shells 11. The connection bolts 328 are in threaded connection to interiors of the bolt columns 329.

[0048] Specifically, two limiting buckles 325 are symmetrically connected to the edge of the connection disc 321, and two sides of the surface of the connection cover 31 are inserted into the limiting buckles 325 by means of anti-falling claws 326, such that the connection disc 321 is connected to the connection cover 31. Connection holes 327 are formed on connection sheets 323 on the surface of the connection disc 321, and connection bolts 328 are inserted into the connection holes 327. Bolt columns 329 are connected to the inner walls of the mounting shells 11, and the connection bolts 328 are in threaded connection to the bolt columns 329, such that the support frame 32 is fixedly connected to the mounting shells 11, and the mounting stability of the air supply assembly 3 is ensured.

[0049] With reference to FIGS. 2 and 7, in the example, annular grooves 18 are symmetrically formed on inner walls of tail ends of the two mounting shells 11. A mounting ring 51 is connected to an edge of the end cover 5. The mounting ring 51 is inserted into the annular grooves 18.

[0050] Specifically, annular grooves 18 are formed at tail ends of the two mounting shells 11, and the mounting ring 51 at a connection edge of the end cover 5 is inserted into the annular grooves 18, such that the end cover 5 is fixedly connected to a tail end of the mounting cylinder 13.

[0051] With reference to FIGS. 6, 7 and 8, in the example, a plurality of plastic strips 19 are connected in sequence along an edge of one of the mounting shells 11. Butt-joint columns 110 are arranged between adjacent plastic strips 19. A plurality of fusion bonding grooves 111 are formed in sequence along an edge of the other one of the mounting housings 11. Butt-joint holes 112 are formed between adjacent fusion bonding grooves 111. The butt-joint columns 110 are inserted into the butt-joint holes 112.

[0052] Specifically, a plurality of plastic strips 19 are connected to the edge of one of the mounting shells 11, and butt-joint columns 110 are connected between the plurality of plastic strips 19. Fusion bonding grooves 111 are formed at the edge of the other one of the mounting shells 11, and butt-joint holes 112 are formed between the fusion bonding groove 111. When the two mounting shells 11 are connected, the butt-joint columns 110 are inserted into the butt-joint holes 112, such that the plastic strips 19 are inserted into the fusion bonding grooves 111. The mounting shells 11 are placed in an ultrasonic welding apparatus, and the plastic strips 19 are fused in the fusion bonding grooves 111, such that the entire structure has better moisture-proof and dust-proof functions.

[0053] With reference to FIG. 3, in the example, a heat sink 27 is fixedly mounted at one ends of the first mica plate 23 and the second mica plate 24 close to the air output nozzle 4.

[0054] Specifically, a heat sink 27 is added at the front ends of the first mica plate 23 and the second mica plate 24, and is capable of effectively dissipating heat at the front ends such that the situation that the heat is gathered at the front ends to damage the heating wires 26 can be avoided.

[0055] With reference to FIGS. 2 and 7, in the example, temperature values 52 for indicating temperatures are carved on a surface of the end cover 5. The temperature adjustment knob 6 corresponds to the temperature values 52.

[0056] Specifically, temperature values 52 are carved on the surface of the end cover 5, and the temperature adjustment knob 6 is adjusted corresponding to the temperature values 52 during rotation such that the corresponding heating temperatures can be adjusted according to usage requirements.

[0057] With reference to FIGS. 2, 6 and 8, in the example, reinforcing ribs 113 are connected to inner walls of the two mounting shells 11.

[0058] Specifically, since the reinforcing ribs 113 are connected to the inner walls of the mounting shells 11, structural strength of the mounting cylinder 13 is improved.

[0059] With reference to FIGS. 1, 2 and 6, in the example, an integrated control board 8 is fixedly mounted in the end cover 5. The heating wires 26, the rotary motor 33 and the temperature adjustment knob 6 are all in control connection to the integrated control board 8. Avoidance grooves 121 are formed on one sides of the two handle housings 12. Switches 122 are mounted in the avoidance grooves 121. A plug 9 is further mounted in the grip 14. The integrated control board 8 is in wire connection to the plug 9 by means of the switches 122.

[0060] Specifically, avoidance grooves 121 are formed on one sides of the two handle housings 12, switches 122 are mounted in the avoidance grooves 121, and the switches 122 are connected to the integrated control board 8 fixedly mounted in the end cover 5. When the plug 9 is connected to a power supply, the integrated control board 8 is electrified by controlling the switches 122, and the heating wires 26, the rotary motor 33 and the temperature adjustment knob 6 are controlled to operate. When the power supply of the plug 9 is pulled out or the switches 122 are turned off, the integrated control board 8 is powered off, and the heat gun stops operating.

[0061] A working principle is as follows: the first mica plate 23 and the second mica plate 24 are connected to each other in a perpendicular manner, such that a support structure for supporting the heating wires 26 is formed. A plurality of sawtooth grooves 25 are formed on the surfaces of the first mica plate 23 and the second mica plate 24, and the heating wires 26 are embedded in the sawtooth grooves 25, such that the heating wires 26 are stably mounted. The heating wire 26 is wound into a wave-type structure by dedicated equipment. Compared with a traditional slingshot-wire-type structure, the wave-type structure is capable of resisting deformation of the heating wire 26 at a high temperature and in a process from a high temperature to a normal temperature such that defects caused by thermal expansion and contraction when the heating wire 26 operates or stops can be avoided. After the wave-type structure of the heating wire 26 is wound around a mica plate, a direction of the wave-type structure is exactly perpendicular to a direction of an air channel such that wind generated by a fan 34 behind can blow out heat with maximum efficiency. The heating wire 26 resists thermal expansion and contraction by means of the wave-type structure, and will not deform even through the heating wire 26 operates for a long time such that the situation that the heating wire deforms after operating for a long time, and then form a short circuit to be fused can be avoided. Moreover, a heat sink 27 is added at the front ends of the first mica plate 23 and the second mica plate 24, and is capable of effectively dissipating heat at the front end such that the situation that the heat is gathered at the front end to damage the heating wire 26 can be avoided. Supplementarily, a plurality of plastic strips 19 are connected to the edge of one of the mounting shells 11, and butt-joint columns 110 are connected between the plurality of plastic strips 19. Fusion bonding grooves 111 are formed at the edge of the other one of the mounting shells 11, and butt-joint holes 112 are formed between the fusion bonding groove 111. When the two mounting shells 11 are connected, the butt-joint columns 110 are inserted into the butt-joint holes 112, such that the plastic strips 19 are inserted into the fusion bonding grooves 111. The mounting shells 11 are placed in an ultrasonic welding apparatus, and the plastic strips 19 are fused in the fusion bonding grooves 111, such that the entire structure has better moisture-proof and dust-proof functions. Further, the support frame 32 is formed by connecting a connection disc 321 and a mounting sleeve 322. One end of the mounting sleeve 322 is connected to the connection disc 321 by means of a plurality of connection sheets 323, such a plurality of air inlets 324 are formed on the connection sheets 323 around joints of the connect discs 321. The air intake holes 7 formed on two sides of the end cover 5 are in communication with the air inlets 324 such that external airflow can enter the air guide cylinder 21 by means of the connection cover 31, and the airflow circulates.

[0062] Finally, it should be noted that the above examples are merely the preferred examples of the present disclosure and are not intended to limit the present disclosure. Although the present disclosure is described in detail with reference to the foregoing examples, a person skilled in the art can still make modifications to the technical solutions described in various foregoing examples, or make equivalent substitutions to some technical features in the technical solutions. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall fall within the scope of protection of the present disclosure.

Claims

1. A heat gun formed by wave-type heating bodies, comprising a housing assembly and a heating assembly mounted in the housing assembly, wherein an air supply assembly is further fixedly mounted in the housing assembly, and the air supply assembly is fixedly connected to one end of the heating assembly; an air output nozzle is sleeved at a front end of the housing assembly, an end cover is mounted at a tail end of the housing assembly, a temperature adjustment knob is mounted in a middle of the end cover, air intake holes are formed on two sides of the end cover, and the air intake holes are in communication with an air intake portion of the air supply assembly; andthe heating assembly comprises a support structure formed by a first mica plate and a second mica plate, heating wires of wave-shaped structures are wound around surfaces of the first mica plate and the second mica plate, and a heat sink is fixedly mounted at one ends of the first mica plate and the second mica plate close to the air output nozzle.

2. The heat gun formed by wave-type heating bodies according to claim 1, wherein the housing assembly comprises two mounting shells and two handle housings, the two handle housings are correspondingly mounted at bottoms of one ends of the two mounting shells respectively, the two mounting shells are connected to form a mounting cylinder, the two handle housings are connected to form a grip, support plates are fixedly mounted in the two mounting shells, cambered grooves are formed on surfaces of the support plates, semi-annular grooves are formed at front ends of the two mounting shells, the air output nozzle is mounted in the two semi-annular grooves, and reinforcing ribs are connected to inner walls of the two mounting shells.

3. The heat gun formed by wave-type heating bodies according to claim 2, wherein the heating assembly further comprises an air guide cylinder mounted in the mounting cylinder, a heat insulation sleeve is arranged on an inner wall of the air guide cylinder, the first mica plate and the second mica plate are mounted in the heat insulation sleeve, and the first mica plate and the second mica plate are connected to each other in a perpendicular manner.

4. A heat gun formed by wave-type heating bodies according to claim 3, wherein a plurality of sawtooth grooves are formed on the surfaces of the first mica plate and the second mica plate, the heating wires) are embedded in the sawtooth grooves, four air channels are formed between the first mica plate and the second mica plate and the heat insulation sleeve, and a direction of the heating wire is perpendicular to a direction of the air channel.

5. The heat gun formed by wave-type heating bodies according to claim 3, wherein the air supply assembly comprises connection covers mounted in the cambered grooves formed on the surfaces of the support plates, support frames are connected to one sides of the connection covers, rotary motors are fixedly mounted in the support frames, fans are fixedly mounted at output ends of the rotary motors, the fans are arranged in the connection covers, mounting holes are formed on inner walls of the connection covers and one end of the air guide cylinder, and mounting bolts are in threaded connection to interiors of the mounting holes.

6. The heat gun formed by wave-type heating bodies according to claim 5, wherein the support frames are formed by connection discs and mounting sleeves, a plurality of connection sheets are connected to one ends of the mounting sleeves, one sides of the plurality of connection sheets are fixedly connected to surfaces of the connection discs, a plurality of air inlets) are formed at joints between the connection sheets and the connection discs, and the air inlets are in communication with external airflow through air intake holes.

7. The heat gun formed by wave-type heating bodies according to claim 6, wherein two limiting buckles are symmetrically connected to an edge of each connection disc, anti-falling claws are fixedly connected to two sides of a surface of each connection cover, the anti-falling claws are inserted into the limiting buckles, connection holes are formed on surfaces of the connection sheets, connection bolts are inserted into the connection holes, two bolt columns are fixedly connected to an inner wall of one of the mounting shells, and the connection bolts are in threaded connection to interiors of the bolt columns.

8. The heat gun formed by wave-type heating bodies according to claim 2, wherein annular grooves are symmetrically formed on inner walls of tail ends of the two mounting shells, a mounting ring is connected to an edge of the end cover, the mounting ring is inserted into the annular grooves, temperature values for indicating temperatures are carved on a surface of the end cover, and the temperature adjustment knob corresponds to the temperature values.

9. The heat gun formed by wave-type heating bodies according to claim 2, wherein a plurality of plastic strips are connected in sequence along an edge of one of the mounting shells, butt-joint columns are arranged between adjacent plastic strips, a plurality of fusion bonding grooves are formed in sequence along an edge of the other one of the mounting housings, butt-joint holes are formed between adjacent fusion bonding grooves, and the butt-joint columns are inserted into the butt-joint holes.

10. The heat gun formed by wave-type heating bodies according to claim 5, wherein an integrated control board is fixedly mounted in the end cover, the heating wires, the rotary motor and the temperature adjustment knob are all in control connection to the integrated control board, avoidance grooves are formed on one sides of the two handle housings, switches are mounted in the avoidance grooves, a plug is further mounted in the grip, and the integrated control board is in wire connection to the plug by means of the switches.

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