KR20100097984A - Soldering iron and soldering apparatus therewith - Google Patents

Soldering iron and soldering apparatus therewith Download PDF

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Publication number
KR20100097984A
KR20100097984A KR1020090016905A KR20090016905A KR20100097984A KR 20100097984 A KR20100097984 A KR 20100097984A KR 1020090016905 A KR1020090016905 A KR 1020090016905A KR 20090016905 A KR20090016905 A KR 20090016905A KR 20100097984 A KR20100097984 A KR 20100097984A
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KR
South Korea
Prior art keywords
iron
heater
temperature
tip
soldering iron
Prior art date
Application number
KR1020090016905A
Other languages
Korean (ko)
Inventor
김덕희
Original Assignee
(주)엠에스테크비젼
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)엠에스테크비젼 filed Critical (주)엠에스테크비젼
Priority to KR1020090016905A priority Critical patent/KR20100097984A/en
Publication of KR20100097984A publication Critical patent/KR20100097984A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/02—Soldering irons; Bits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/02—Soldering irons; Bits
    • B23K3/03—Soldering irons; Bits electrically heated
    • B23K3/033—Soldering irons; Bits electrically heated comprising means for controlling or selecting the temperature or power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/02—Soldering irons; Bits
    • B23K3/03—Soldering irons; Bits electrically heated
    • B23K3/0338—Constructional features of electric soldering irons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08—Auxiliary devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/42—Printed circuits

Abstract

The present invention relates to a soldering iron and a soldering iron device including the same, and more particularly, a soldering iron and a soldering iron including the same to accurately measure the temperature of the iron tip in real time, and to maintain a constant at a predetermined reference temperature Relates to a device.

The soldering iron according to the present invention includes a heater for generating heat, a iron tip into which one end of the heater is inserted, and a temperature sensor penetrating the heater and installed adjacent to an end of the iron tip in an internal space of the iron tip.

In addition, the soldering iron device according to the present invention is a soldering iron having a temperature sensor in the empty inner space of the iron tip coupled to the one end of the heater penetrating the inside of the heater and the amount of power supplied to the soldering iron And adjusting a temperature controller to keep the temperature of the iron tip constant.

Description

Soldering iron and soldering iron device including the same {Soldering iron and soldering apparatus therewith}

The present invention relates to a soldering iron and a soldering iron device including the same, and more particularly, a soldering iron and a soldering iron including the same to accurately measure the temperature of the iron tip in real time, and to maintain a constant at a predetermined reference temperature Relates to a device.

In general, a method of installing an electronic component on a printed circuit board (PCB) is mainly used by soldering to fix lead-free lead by attaching lead to the end of the electronic component after melting it by instantaneous application of high temperature to lead-free lead. It is becoming.

Conventional soldering irons used in such soldering operations include a soldering iron tip for melting lead-free lead, a heater portion for heating the iron tip, a handle portion connected to the heater portion so that an operator can hold the soldering iron, and a power source from outside. It consists of a power supply unit for applying.

However, the conventional soldering iron cannot check the temperature of the iron tip while the iron tip is heated and the iron tip is heated. Therefore, it was troublesome to repeatedly check whether the temperature of the iron tip reached an appropriate temperature above the solder melting point. . If the soldering operation is performed in the state that the temperature of the iron tip is lower than the proper temperature above the melting point of the solder, there is a problem in that the wettability of the solder is lowered and the working efficiency is lowered.

In addition, when a soldering operation is performed for a certain time and the iron tip is excessively heated beyond the proper temperature, the handle portion becomes hot, and the worker may feel uncomfortable. In addition, the soldering process causes damage to the printed circuit board or the electronic component due to high temperature, and has a problem in that the cost of repairing or replacing the iron tip is reduced by reducing the life of the iron tip.

On the other hand, in order to solve the problem according to the temperature at which the iron tip is heated as described above, a technique for attaching a sensor to measure the temperature of the iron tip in a conventional soldering iron has been proposed. However, in the conventional soldering iron, the sensor is spaced apart from the tip of the conical iron tip, and is attached to one side of the outer peripheral surface of the iron tip, and an error occurs in accurately measuring the temperature of the iron tip that is exposed to air to melt lead-free lead by contact. There was this.

In order to solve the above problems, the present invention penetrates the inside of the heater by installing a temperature sensor inside the tip of the conical iron tip to accurately measure the temperature of the iron tip in real time, and the temperature of the iron tip in accordance with the measured value of the temperature sensor Provided are a soldering iron for maintaining constant at a set reference temperature and a soldering iron device comprising the same.

Soldering iron according to the present invention for achieving the above object is a heater for generating heat, the iron tip is inserted into one end of the heater and penetrates the heater and is adjacent to the end of the iron tip in the inner space of the iron tip It includes a temperature sensor that is installed.

In addition, a soldering iron device according to the present invention for achieving the above object is a soldering iron having a temperature sensor in the empty inner space of the iron tip to penetrate the inside of the heater and coupled to one end of the heater, It includes a temperature controller for controlling the amount of power supplied to the soldering iron to maintain a constant temperature of the iron tip.

According to the present invention, the temperature at which the iron tip is heated by placing the temperature sensor measuring the temperature of the iron tip inside the tip of the iron tip, ie, inside the conical tip of the iron tip, is positioned as close as possible to the contact with the brazing material without exposing it to air. Can be measured accurately.

In addition, the temperature controller connected to the soldering iron can check the measured temperature of the iron tip measured by the temperature sensor in real time, so that the temperature of the iron tip does not have to be manually checked.

In addition, by adjusting the amount of power applied to the soldering iron through the temperature controller to maintain a constant temperature of the iron tip it is possible to improve the efficiency of the soldering operation. In particular, the soldering tip may be prevented from being overheated during a long time of soldering operation to prevent thermal damage of a printed circuit board or an electronic component, thereby performing a good soldering operation.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention in more detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art the scope of the invention. It is provided for complete information. Like reference numerals in the drawings refer to like elements.

1 is a perspective view showing a soldering iron device according to an embodiment of the present invention, Figure 2 is an internal cross-sectional view of the soldering iron shown in Figure 1 viewed from the line AA, Figure 3 is a soldering iron according to the present invention This is a cutaway view of the iron tip of the pharynx.

1 to 3, a soldering iron device 100 according to an embodiment of the present invention penetrates through an inside of a heater 220 for supplying heat to an iron tip 210. And a soldering iron 200 having a temperature sensor 230 in the empty inner space of the iron tip 210, which is coupled to one end and has a conical tip, and controls the amount of power supplied to the soldering iron 200. By including a temperature controller 300 to maintain a constant temperature of the iron tip (210).

On the other hand, although not shown may further include a cradle or cradle that can temporarily mount the soldering iron 200 during the soldering operation.

The temperature controller 300 supplies power from the outside through a switch unit 310 for starting or terminating an operation, and a power line 324 provided with a plug 322 at one side according to the operation of the switch unit 310. Receiving the measured temperature of the temperature sensor 230 to supply power to the receiving power unit (not shown), the operation unit 330 to set the reference temperature of the iron tip 210, the soldering iron 200 In order to externally display the terminal connection portion 340 connected to the port 292 of the wiring 290 provided in the soldering iron 200 and the measured temperature of the iron tip 210 to the outside and the Control unit for controlling the power unit 320 to adjust the temperature of the iron tip 210 to the reference temperature by comparing the reference temperature set by the operation unit 330 and the measured temperature measured by the temperature sensor 230 (not shown) City).

In the present embodiment, the body 305 of the temperature controller 300 is formed in a rectangular box shape, but the body shape is not limited thereto, and may be formed in various shapes such as a spherical shape, an oval shape, and a polygonal column shape. A power unit and a control unit are built in the body 305 of the rectangular box type temperature controller 300, and a switch unit 310, an operation unit 330, a terminal connection unit 340, and a display are provided on the front of the body 305. The unit 350 is provided.

The switch unit 310 includes an on / off switch 312 for starting or terminating an operation of the temperature controller 300 and an operation lamp 314 for displaying an operation state of the on / off switch 312 with lighting. ) In this embodiment, a tumbler type switch is used as the on / off switch 312, but various types of switches may be used.

The operation unit 330 is a means for setting the temperature of the iron tip 210 that is kept constant during the soldering process, that is, the reference temperature. In this embodiment, the operation unit 330 is a clockwise or counterclockwise manner using the dial operation unit 330. Rotate in the direction to increase or decrease the reference temperature. In order to easily check the reference temperature set by the operator, the scale of the 0 degreeC-500 degreeC temperature range is displayed in the periphery of the operation part 330. As shown in FIG. Of course, unlike the present embodiment, it may be provided with a button type operation unit in which the setting of the reference temperature is changed according to the pressing of the button.

In addition, the operator may easily display the reference temperature set by the display unit 350 according to the operation of the operation unit 330 without setting the reference temperature using the scale displayed on the front of the temperature controller 300. This makes it possible to set the reference temperature more accurately and easily.

The terminal connection part 340 is formed to correspond to the port 292 formed at one end of the wiring 290 of the soldering iron 200, and the soldering iron 200 and the temperature controller 300 are simply connected, and the terminal connection part Power is supplied to the soldering iron 200 through 340, and the temperature value of the iron tip 210 measured by the temperature sensor 230 provided in the soldering iron 200 is sent to the controller.

The display unit 350 includes a segment device or a liquid crystal display device to display the measured temperature of the iron tip 210 received through the control unit in real time on the measured temperature display unit 352, in addition to the measured temperature of the iron tip 210. For example, the reference temperature set by the operator may be displayed on the additional information display unit 354.

Soldering iron 200 according to the present invention is a heating unit 202 including a heater 220, a soldering iron tip 210 and the temperature sensor 230, and a heater connection portion connected to one side of the heating unit 202 ( 260, the wiring unit 208 connecting the heater connection unit 260 with the temperature controller 290 through the wiring 290, and the operator connecting the heater connection unit 260 and the wiring unit 208 while soldering a soldering iron ( It includes a handle portion 270 that can easily hold the 200 and the fastening portion 280 for fixing the heat generating portion 202 to the handle portion 270.

The heating unit 202 is a heater 220 for generating heat by receiving power from the temperature controller 290, the iron tip 210 receives the heat from the heater 220, the iron tip 210 and the heater 220 It includes a heater protective outer shell 240 to protect the wrap.

The heater 220 is for heating the iron tip 210 by receiving power from the heater connection part 260, and a part of the body is inserted into the opening 212 formed at one end of the iron tip 210. In the present embodiment, the heater 220 is formed of a rod-shaped ceramic heater having a through-hole 222 formed therein along the extending length direction, and a cross section perpendicular to the length direction of the ceramic heater at this time. Is made in a circle. Of course, since the cross section of the heater 220 is circular, the shape of the opening 212 formed in the iron tip 210 also corresponds to the cross-sectional shape of the heater 220, and the heater 220 is fixed in contact with the inside of the iron tip 210. Effective at However, the heater 220 is not limited to the cross section perpendicular to the extending direction and may be elliptical or polygonal. At this time, the shape of the opening 212 of the iron tip 210 is preferably oval or polygonal so as to correspond to the cross-sectional shape of the heater 220. Of course, if the heater 220 can be located in contact with the inside of the iron tip 210, the cross-sectional shape of the heater 220 and the shape of the opening 212 of the iron tip 210 may be different from each other.

The iron tip 210 is for soldering by receiving heat from the heater 220, and has a conical tip formed with a sensor groove 214 into which one end of the temperature sensor 230 is inserted into the inner space, and An opening 212 having one end inserted therein includes a pillar-shaped rear end formed at a central portion thereof, and the sensor groove 214 and the opening 212 are connected in a straight line. In addition, it is effective that the iron tip 210 is stepped 216 between the conical front end and the rear end of the column type so that the iron tip 210 can be fixed to the heater protection shell (240). The iron tip 210 may include a lead climbing layer 217 that prevents lead from rising on the outer circumferential surface of the rear columnar body and an oxidation prevention layer 218 that prevents oxidation of the conical tip in direct contact with the lead. In addition, the iron tip 210 may use, for example, pure copper (Cu) as the body of the iron tip 210 and chromium (Cr) as the lead rising layer 217, and the tin (Sn) as the antioxidant layer 218. ) Can be used. In addition, the wear protection layer 219 may be formed between the lead rise prevention layer 217 and the antioxidant layer 218, and the wear protection layer 219 may use, for example, iron (Fe).

The sensor groove 214 formed in the iron tip 210 may be formed in various shapes as shown in FIG. 3, and may be variously selected in shape according to the material, processing method, and the like of the iron tip 210. It is preferred that the shape 230 can be attached to the position closest to the tip of the iron tip 210.

One end of the temperature sensor 230 may be connected to the signal line 294 through the heater connection unit 260 to check the measured temperature of the iron tip 210 measured by the temperature controller 300. In addition, the other end passes through the through hole 222 formed in the heater 220 and is located in the sensor groove 214 inside the conical tip of the iron tip 210. As in the present invention, the temperature sensor 230 is accurately measured by placing the temperature sensor 230 close to the tip of the iron tip 210 where solder is made by contacting with actual lead without exposing the temperature sensor 230 to air. can do. In the present embodiment, a thermocouple sensor is used as the temperature sensor 230, and a portion of the thermocouple sensor passing through the heater 220 is surrounded by an insulating coating 238, and the thermocouple sensor is heated by the heat applied by the heater 220. To prevent malfunction or breakage.

The heater support 250 penetrates through the inside of the heater 220 is inserted into one side of the annular first so as to be in contact with the handle portion 270 in a state of holding the protruding edge of the heater protective outer shell 240 Screw grooves 258 are formed. A first fastening means 282 having a screw groove shape is coupled to the first screw groove 258 corresponding to the screw groove shape.

The heater protection sheath 240 is formed in a tubular shape as a housing member for protecting the iron tip 210 and the heater support 250 for supporting the heater 220 from the outside. Heater protection shell 240 is open at both ends, respectively, one end is provided with the iron tip 210, the open edge is bent inward and the other end is formed to protrude outward. At this time, the stepped portion 216 of the iron tip 210 is in contact with one end of the heater protective outer shell 240, the edge of which is bent inward, so that the iron tip 210 is not separated to the outside. The heater protective sheath 240 may be formed of metal or heat resistant synthetic resin. Meanwhile, a plurality of cooling holes 244 are formed in a portion of the heater protection sheath 240 to heat the heat transferred from the heater 220 and the iron tip 210 to the handle 270 of the soldering iron 200. It can be released to the outside. The inside of the heater protective shell 240 is provided with a first insulation 252 for blocking the heat of the iron tip 210 is transmitted to the heater support 250, the other end of the heater protective shell 240 A portion of the open edge protruding outward is provided with a second heat insulating material 254 and a third heat insulating material 256 to insulate the heater support 250 and the fastening part 280. The first heat insulating material 252 to the third heat insulating material 256 may basically include a ring shape, and may include all heat insulating materials capable of blocking heat transfer such as heat insulating rubber, heat insulating plastic, or refractory. In this case, it is not simply formed in a ring shape, but is formed in a cylindrical shape whose edge is bent outwardly.)

The heater connection part 260 is to transfer power applied from the wiring 290 to the heater 220, and has one end open and the other end having a shielded rod shape. The heater 220 is inserted into the heater connector 260 through the open end of the heater connector 260, and the first wire 297, the second wire 298, and the signal line 294 are respectively shielded at the other end of the heater connector 260. Connected.

The elastic member 262 includes a coil spring as a means for applying a tension when the heater support 250 and the handle 270 are coupled. In addition, the elastic member 262 is provided inside the handle 270 to apply tension to the heater support 250, it is located between the heater support 250 and the handle 270. At this time, the elastic member 262 is provided in a form surrounding the heater connecting portion 260 so that the heater connecting portion 262 is located therein. The third wiring 296 for grounding is connected to the elastic member 262.

The wiring unit 208 transmits power supplied from the ground and the outside to the heater connection unit 260, and transmits the temperature of the iron tip 210 measured by the temperature sensor 230 to the temperature controller 300. And the signal lines are bundled together and include a first wiring 297, a second wiring 298, a third wiring 296, and a signal line 294. The wiring 290 constituting the wiring portion 208 may include a covering portion, and the first and second wirings 297 to 296 and the signal line 294 wrapped by the covering portion are handle portions 270. It is located inside of.

The wire bending prevention part 280 prevents the wire 290 from being broken and is provided at the other open end of the handle part 270. In addition, the wire break prevention unit 280 surrounds the outside of the coated wire 290 so that the wire 290 is not excessively bent by an external force. For this purpose, the wire break prevention unit 280 is elastic and durable. It is effective to be formed of this excellent material.

The handle 270 may be made of a synthetic resin having heat insulation and elasticity to allow a worker to grip and handle the soldering iron 200. In addition, the handle portion 270 has a handle 272 having both ends opened, a hollow portion 274 formed inside the handle 272, and a second screw groove 276 protruding in an annular shape from the opened end of the handle. It includes. At this time, the handle 272 may be formed in a curved shape with one end protruding to the side to improve a user's grip. A second fastening means 284 having a screw groove corresponding to the shape of the second screw groove 276 is coupled to the second screw groove 276 inside the ring-shaped body.

As described above, the soldering iron device and the soldering iron device including the soldering iron according to the present invention are positioned so that the iron tip is positioned as close as possible to the part where contact with the soldering material is made without exposing the temperature sensor measuring the temperature of the iron tip to air. The tip, ie inside the conical tip of the iron tip, can accurately measure the temperature at which the iron tip heats up. In addition, it is possible to check the measured temperature of the iron tip measured by the temperature sensor in real time through the temperature controller connected to the soldering iron, so that the temperature of the iron tip does not have to be manually checked, and the amount of power applied to the soldering iron through the temperature controller The temperature of the iron tip can be kept constant by adjusting the speed, which improves the soldering efficiency. That is, the quality of the product on which the soldering work is performed can be improved and the productivity of the soldering work is improved.

As mentioned above, although this invention was demonstrated with reference to the above-mentioned Example and an accompanying drawing, this invention is not limited to this, It is limited by the following claims. Therefore, it will be apparent to those skilled in the art that the present invention may be variously modified and modified without departing from the technical spirit of the following claims.

1 is a perspective view showing a soldering iron device according to an embodiment of the present invention.

FIG. 2 is an internal sectional view seen from the line A-A of the soldering iron shown in FIG. 1; FIG.

Figure 3 is a cross-sectional view showing the iron tip of the soldering iron machine according to the invention.

<Description of Signs of Major Parts of Drawings>

100: soldering iron device 200: soldering iron

202: heat generating portion 208: wiring portion

210: iron tip 212: opening

214: sensor groove 220: heater

222: through hole 230: temperature sensor

240: heater protective shell 250: heater support

260: heater connection portion 270: handle portion

280: fastening portion 300: temperature controller

310: switch unit 330: operation unit

340: terminal connection unit 350: display unit

Claims (8)

A heater for generating heat; A soldering iron tip coupled to the heater; A temperature sensor penetrating the heater and installed adjacent to an end of the iron tip in an internal space of the iron tip; Soldering iron comprising a. The method of claim 1, The temperature sensor is a soldering iron, characterized in that the thermocouple sensor. The method of claim 1, The heater is a soldering iron, characterized in that the rod-shaped ceramic heater with a through-hole formed in the longitudinal direction extending. The method of claim 1, The iron tip includes a conical tip having a sensor groove into which one end of the temperature sensor is inserted into an inner space, and a rear end of a column shape having an opening to which one end of the heater is inserted into the central portion. A soldering iron for forming spheres connected in a straight line. The method of claim 4, wherein A soldering iron for which a step is formed between the tip and the rear end of the iron tip. The method of claim 5, An anti-oxidation layer is formed on an outer circumferential surface of the conical tip, a lead anti-limb layer is formed on an outer circumferential surface of the columnar rear end, and a soldering iron is formed between the anti-oxidation layer and the lead anti-limb layer. A soldering iron having a temperature sensor in an empty inner space of the iron tip penetrating the inside of the heater and coupled to one end of the heater; A temperature controller for controlling the amount of power supplied to the soldering iron to maintain a constant temperature of the iron tip; Soldering iron device comprising a. The method of claim 7, wherein The temperature controller, A switch unit for starting or terminating an operation; A power unit receiving power from the outside through a power line having a plug at one side according to the operation of the switch unit; An operation unit for setting a reference temperature of the iron tip; A terminal connection part connected to a wire provided in the soldering iron to supply power to the soldering iron and to receive the measured temperature of the temperature sensor; A display unit which displays the measured temperature of the iron tip to the outside; And A control unit for controlling the power unit to adjust the temperature of the iron tip to a reference temperature by comparing the reference temperature set by the operation unit with the measured temperature measured by the temperature sensor; Soldering iron device comprising a.
KR1020090016905A 2009-02-27 2009-02-27 Soldering iron and soldering apparatus therewith KR20100097984A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1020090016905A KR20100097984A (en) 2009-02-27 2009-02-27 Soldering iron and soldering apparatus therewith

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103551697A (en) * 2013-10-16 2014-02-05 南安市柳城高捷图文设计工作室 Sensing telescopic type electric soldering iron cooling support
CN106374313A (en) * 2016-10-18 2017-02-01 成都尚智恒达科技有限公司 Equipotential connection point welding device convenient for temperature control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103551697A (en) * 2013-10-16 2014-02-05 南安市柳城高捷图文设计工作室 Sensing telescopic type electric soldering iron cooling support
CN104858523A (en) * 2013-10-16 2015-08-26 庄景阳 Sensing telescopic type electric soldering iron heat dissipating frame
CN106374313A (en) * 2016-10-18 2017-02-01 成都尚智恒达科技有限公司 Equipotential connection point welding device convenient for temperature control
CN106374313B (en) * 2016-10-18 2018-10-12 成都尚智恒达科技有限公司 Convenient for temperature controlled equipotential link spot welding connection device

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