CN109798659B

CN109798659B - Hot air gun

Info

Publication number: CN109798659B
Application number: CN201910027179.2A
Authority: CN
Inventors: 勾明康
Original assignee: Guangzhou Yihua Electronic Equipment Co Ltd
Current assignee: Guangzhou Yihua Electronic Equipment Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2021-04-06
Anticipated expiration: 2039-01-11
Also published as: CN109798659A

Abstract

The invention discloses a hot air gun which comprises a ceramic heating rod, a copper rod, a steel cylinder and a handle, wherein a temperature sensor is arranged inside the front end of the ceramic heating rod, the rear end of the ceramic heating rod is connected with a lead, the cross section of the copper rod is in a gear shape, the copper rod is sleeved at the front end of the ceramic heating rod, one end of the steel cylinder is sleeved outside the copper rod, the other end of the steel cylinder is inserted inside one end of the handle, the handle is of a hollow structure, the other end of the handle is provided with an air pipe inlet connected with an air pipe, and one end, far away from the handle, of the steel cylinder is detachably connected with an air nozzle. The hot air gun provided by the invention can normally work under the condition of weak air output, and can not damage the bonding pads and the heating rods of peripheral micro components. The invention has simple structure, good use effect and easy popularization and use.

Description

Hot air gun

Technical Field

The invention relates to the technical field of unsoldering equipment, in particular to a hot air gun.

Background

Because the traditional heating body structure of the hot air gun is that the resistance wire is wound on the ceramic framework, air is supplied by the air pump or the fan, and air flows through the resistance wire in heating to take away heat, if the air quantity is too small, the heat cannot be taken away in time, and the resistance wire can be burnt; and too big amount of wind not only easily blows away small-size components and parts, for example, the internal resistance capacitance of cell-phone, integrated circuit to great high temperature hot-blast also can melt peripheral miniature component's pad.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the hot air gun, which changes the heating form, so that the hot air gun can normally work under the condition of weak air output, and the welding disc and the heating rod of the peripheral miniature component can not be damaged.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a hot-blast rifle, includes pottery stick, bar copper, steel cylinder and handle that generates heat, the inside of the front end of pottery stick that generates heat is equipped with temperature sensor, the rear end connecting wire of pottery stick that generates heat, the cross section of bar copper is the gear form, the bar copper cup joints the front end of pottery stick that generates heat, the one end of steel cylinder cup joints the outside of bar copper, the other end is pegged graft the inside of the one end of handle, the handle is hollow structure, just the other end of handle is equipped with the trachea entry of connecting trachea, the steel cylinder is kept away from the one end detachably of handle even has the tuyere.

Preferably, a female seat is arranged in the handle, a first air inlet hole is formed in the middle of the female seat, and a plurality of pins and a positioning hole are annularly arranged on the outer side of the first air inlet hole.

Preferably, a male seat is fixedly arranged in the handle corresponding to the female seat, a second air inlet hole is formed in the middle of the male seat corresponding to the first air inlet hole, a plurality of male pins are arranged on the male seat in one-to-one correspondence with the plurality of pins, and a cylinder is arranged corresponding to the positioning hole.

Preferably, a reed switch is arranged inside the cylinder and electrically connected with the temperature sensor.

Preferably, the steel cylinder is sleeved with a sleeve for fixing the tuyere, and one end of the sleeve, which is far away from the tuyere, is provided with a nut for fixing the sleeve.

Preferably, the steel cylinder with the outside cover of handle junction is equipped with the connector, connector threaded connection the handle.

Preferably, a handle sheath is arranged on the handle, and one end of the handle sheath is sleeved on the connecting head.

Preferably, the number of the pins is 5.

Preferably, the side of the female socket is provided with a groove for mounting a ground wire.

The invention has the beneficial effects that: through adopting the pottery stick that generates heat to the bar copper is established to the cover on the pottery stick that generates heat, but the pottery heat bar's heat fully transmits for the bar copper, because the cross section of bar copper is the gear form, and the cover is equipped with the steel cylinder on the bar copper, so as to take away the heat of bar copper fully through the clearance between bar copper and the steel cylinder when the air pump air current after the air supply, spout to the tuyere, can normally work under weak air output condition. Meanwhile, the front end of the ceramic heating rod is provided with the temperature sensor, when the temperature is too high, the temperature sensor transmits a detected signal to the host machine, so that the temperature is constant at the set temperature, and the welding disc of the peripheral miniature component and the heating rod are prevented from being damaged. The invention has simple structure, good use effect and easy popularization and use.

Drawings

FIG. 1 is a schematic view of a heat gun according to the present invention.

Fig. 2 is a schematic cross-sectional view taken along line a-a in fig. 1.

FIG. 3 is a schematic cross-sectional view of B-B in FIG. 1.

FIG. 4 is a schematic view of a female base of a heat gun according to the present invention.

FIG. 5 is a schematic view of a male socket of a heat gun according to the present invention.

Wherein: 1-ceramic heating rod, 2-copper rod, 3-steel cylinder, 4-handle, 5-temperature sensor, 6-air pipe inlet, 7-air nozzle, 8-female seat, 9-first air inlet hole, 10-pin, 11-locating hole, 12-male seat, 13-second air inlet hole, 14-cylinder, 15-reed pipe, 16-sleeve, 17-nut, 18-handle sheath, 19-groove, 20-connector and 21-male needle.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-3, the hot air gun of the embodiment includes a ceramic heating rod 1, a copper rod 2, a steel cylinder 3 and a handle 4, wherein a temperature sensor 5 is arranged inside the front end of the ceramic heating rod 1, a rear end of the ceramic heating rod 1 is connected with a wire, the cross section of the copper rod 2 is in a gear shape, the copper rod 2 is sleeved at the front end of the ceramic heating rod 1, one end of the steel cylinder 3 is sleeved outside the copper rod 2, the other end of the steel cylinder 3 is inserted inside one end of the handle 4, the handle 4 is of a hollow structure, the other end of the handle 4 is provided with an air pipe inlet 6 connected with an air pipe, and one end of the steel cylinder 3, which is far away from the handle 4, is detachably connected with an air nozzle 7.

Based on above-mentioned technical characteristic's hot-blast rifle generates heat through adopting pottery stick 1 to the bar copper 2 is established to the cover on pottery stick 1 that generates heat, but the heat of pottery stick 1 that generates heat fully transmits for bar copper 2, because the cross section of bar copper 2 is the gear form, and the cover is equipped with steel cylinder 3 on the bar copper 2, so as to take away the heat of bar copper 2 through the clearance between bar copper 2 and the steel cylinder 3 fully when the air pump air current after the air supply, spout to tuyere 7, can normally work under weak air output condition. Meanwhile, the temperature sensor 5 is arranged at the front end of the ceramic heating rod 1, when the temperature is too high, the temperature sensor 5 transmits a detected signal to the host machine, so that the temperature is constant at the set temperature, and the welding disc of the peripheral miniature component and the heating rod are prevented from being damaged. The invention has simple structure, good use effect and easy popularization and use.

In this embodiment, a sleeve 16 for fixing the tuyere 7 is sleeved on the steel cylinder 3, and a nut 17 for fixing the sleeve 16 is arranged at one end of the sleeve 16 far away from the tuyere 7. The air nozzle 7 is fixed by arranging the sleeve 16, when the air nozzle 7 with different specifications needs to be replaced, only the nut 17 needs to be unscrewed, and then the sleeve 16 is taken down, so that the operation is simple and convenient.

In this embodiment, the connector 20 is sleeved outside the joint of the steel cylinder 3 and the handle 4, and the connector 20 is in threaded connection with the handle 4. During actual manufacture steel cylinder 3 is the notch cuttype, is close to the diameter of the one end of handle 4 is great, through setting up connector 20 works as can support after the connector 20 is screwed up and lean on the lateral wall of the ladder section of the major diameter of steel cylinder 3, thereby it is fixed steel cylinder 3.

In addition, when actually making, for the convenience sleeve pipe 16 is fixed, can steel cylinder 3 is located sleeve pipe 16 with a metal head is established to position cover between handle 4, will the one end of metal head is fixed the inside of connector 20, the surface of the other end sets up the external screw thread, is fixed sleeve pipe 16 time only need with nut 17 partly with the metal head is connected can, easy operation is convenient.

In this embodiment, a handle sheath 18 is disposed on the handle 4, and one end of the handle sheath 18 is sleeved on the connector 20.

Referring to fig. 4-5, in the present embodiment, a female seat 8 is disposed in the handle 4, a first air inlet hole 9 is disposed in the middle of the female seat 8, and a plurality of pins 10 and a positioning hole 11 are annularly disposed outside the first air inlet hole 9. Meanwhile, in order to match the female seat 8, a male seat 12 is fixedly arranged in the handle 4 corresponding to the female seat 8, a second air inlet 13 is arranged in the middle of the male seat 12 corresponding to the first air inlet 9, a plurality of male pins 21 are arranged on the male seat in one-to-one correspondence with the plurality of pins 10, and a cylinder 14 is arranged corresponding to the positioning hole 11. During installation, the female seat 8 can be installed only by sleeving the positioning hole 11 on the cylinder 14. In addition, in order to make the installation of the female seat 8 more stable, the other end of the female seat 8 is installed inside the steel cylinder 3.

Preferably, the number of the pins 10 is 5, and the pins are respectively a temperature sensor pin, a grounding pin, a heating rod pin and a heating rod pin. In actual installation, a groove 19 for installing a ground wire is formed in the side portion of the female base 8, and when the ground wire is connected from the grounding pin, the ground wire is installed in the groove 19 and then welded with the steel cylinder 3, so that the steel cylinder 3 is connected with the ground wire.

In this embodiment, a reed switch 15 is disposed inside the cylinder 14, and the reed switch 15 is electrically connected to the temperature sensor 5. During practical use, six wires are arranged in the handle 4, 5 wires correspond to the 5 pins 10, the other wire is connected with one end of the reed switch 15, the other end of the reed switch 15 is connected with the two pins of the sensor, and the handle seat of the hot air gun is provided with the powerful magnet, so that the reed switch 15 can be attracted under the influence of magnetic force when the handle 4 is placed on the handle seat, a signal is released to enable the temperature sensor 5 to control the host to enter a cooling standby mode, and the ceramic heating rod 1 is prevented from being burnt out due to continuous heating.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A hot air gun is characterized in that: the ceramic heating rod comprises a ceramic heating rod, a copper rod, a steel cylinder and a handle, wherein a temperature sensor is arranged inside the front end of the ceramic heating rod, a lead is connected to the rear end of the ceramic heating rod, the cross section of the copper rod is in a gear shape, the copper rod is sleeved at the front end of the ceramic heating rod, one end of the steel cylinder is sleeved outside the copper rod, the other end of the steel cylinder is inserted inside one end of the handle, the handle is of a hollow structure, the other end of the handle is provided with an air pipe inlet connected with an air pipe, and one end, far away from the handle, of the steel cylinder is detachably connected with an air nozzle;

the inside of handle is equipped with the cylinder, the inside of cylinder is equipped with the tongue tube, the tongue tube with the temperature sensor electricity is connected.

2. The heat gun of claim 1, wherein: the handle is internally provided with a female seat, the middle part of the female seat is provided with a first air inlet hole, and the outer side of the first air inlet hole is annularly provided with a plurality of pins and a positioning hole.

3. The heat gun of claim 2, wherein: the handle is characterized in that a male seat is fixedly arranged in the handle corresponding to the female seat, a second air inlet hole is formed in the middle of the male seat corresponding to the first air inlet hole, a plurality of male pins are arranged on the male seat in one-to-one correspondence with the plurality of pins, and a cylinder is arranged corresponding to the positioning hole.

4. The heat gun of claim 1, wherein: the sleeve pipe that is used for fixing the tuyere is overlapped on the steel cylinder, the sleeve pipe is kept away from the one end of tuyere is equipped with and is used for fixing sheathed tube nut.

5. The heat gun of claim 1, wherein: the steel cylinder with the outside cover of handle junction is equipped with the connector, connector threaded connection the handle.

6. The heat gun of claim 5, wherein: the handle is provided with a handle sheath, and one end of the handle sheath is sleeved on the connecting head.

7. The heat gun of claim 2, wherein: the number of the pins is 5.

8. The heat gun of claim 2, wherein: and a groove for mounting a ground wire is formed in the side part of the female seat.