JP6574916B1 - Soldering iron used for sheet metal repair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soldering iron used for sheet metal repair for repairing a dent portion generated in a sheet metal constituting an automobile body panel or the like. SOLUTION: A flat chip plate comprising a heater member 2, a gripping member 3, and a tip member 4, and the tip 6 of the tip member 4 gradually decreases in thickness toward a tip surface 8a. 8, and a slit 8 b along the chip plate width direction on the tip surface 8 a of the chip plate 8 is capable of sucking and storing the molten solder material 22 on the surface of the recessed portion 11 a of the sheet metal 11 by capillary action. In addition, the molten solder material 22 stored inside is drilled in two or more locations in a direction perpendicular to the chip plate surface so that the molten solder material 22 can be supplied to the surface of the recess 11a. Scraping of the oxide film on the surface of the recess 11a by reciprocating movement in the chip plate width direction while the rectangular tooth-like body 8c is covered with the molten solder material on the surface 8a along the chip plate width direction; 3 or more arrays to allow discharge It is made. [Selection] Figure 1

Description

  The present invention relates to a soldering iron used for sheet metal repair for repairing a dent portion caused by damage or the like on a sheet metal made of iron, steel, aluminum alloy or the like constituting a body panel of an automobile.

  In repairing a sheet metal of a recessed portion such as a steel plate, Japanese Patent Application Laid-Open No. 63-71345 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2006-130559 (Patent Document 2) join a drawer member to the surface of the recessed portion by soldering. In addition, a sheet metal repair method is disclosed in which the recess is pulled out and repaired by pulling the drawer member outward.

  The conventional sheet metal repair method including the step of joining the drawer member by soldering is a processing temperature compared to the conventional method of joining the drawer member to the surface of the recess by welding such as spot welding with high temperature heating of 1000 ° C. or higher. Is not much lower than 400 ° C., and therefore, the dent is not exposed to high temperature, so that deterioration of the material and strength of the constituent material of the dent are suppressed. Even if the combustible materials are arranged adjacent to each other, there are advantages such as a low risk of ignition.

  The inventors of the present invention are materials that have recently been used extensively for automobile body panels and the like for weight reduction, tensile strength enhancement, and the like. It has already been confirmed that a sheet metal repairing method including a joining step of the drawer member by soldering can be applied to repair of the dent portion made of a high-strength steel plate having a difficulty in causing a decrease.

  On the other hand, aluminum alloys such as 6000 series and 7000 series, which are excellent in specific strength and formability, have begun to be used for automobile body panels and the like in order to further reduce weight and reduce fuel consumption while maintaining high strength. .

  However, when repairing the sheet metal of the recessed portion of the body panel made of the aluminum alloy plate, it has been extremely difficult to apply a conventional sheet metal repair method including a joining process of the drawer member by soldering.

  That is, in order to join the lead member to the surface of the recessed portion of the body panel made of the aluminum alloy plate by soldering, even if solder plating is first performed on the surface of the recessed portion after removing the oxide film by polishing or the like, Since the oxide film is polished and removed from the surface of the recess due to its high chemical affinity with oxygen, a new oxide film is formed on the surface at the same time, so the molten solder material supplied for solder plating is It is blocked by the newly formed oxide film as described above, and a stable intermetallic compound or solid solution cannot be formed with the unoxidized aluminum alloy on the surface of the recess.

JP-A-63-71345 JP 2006-130559 A JP 2002-239719 A JP 2005-161336 A

  In view of the problems of the prior art, an object of the present invention is to restore a dent portion generated in a sheet metal constituting an automobile body panel or the like, particularly a sheet metal made of an aluminum alloy, to the surface of the dent portion. An object of the present invention is to provide a soldering iron that can be easily joined by soldering.

  As described in claim 1, the soldering iron according to the present invention is a soldering iron that applies solder plating to the surface of the recess for soldering joining of the drawer member to the surface of the recess in sheet metal repair. A heater member, a gripping member that is adiabatically connected to the heater member, and a tip member that is thermally connected to the heater member and has a tip protruding forward. The tip is provided with a flat chip plate whose thickness gradually decreases toward the tip surface, and a slit is provided on the tip surface of the chip plate along the chip plate width direction so as to be supplied to the surface of the recess for solder plating. Perforated in the direction intersecting the chip plate surface at two or more locations so that the solder material can be sucked into and stored by capillary action and can be supplied to the surface of the recessed portion of the molten solder material stored therein. And By scraping the oxide film on the surface of the recess by reciprocating movement in the chip plate width direction while the tooth-like body is covered with the molten solder material on the tip surface of the chip plate along the chip plate width direction. It is characterized in that it is formed into three or more so that it can be discharged.

  As for the tip plate of the tip, it is preferable that the heat transfer distance from the heater member is adjustable.

  The soldering iron according to the present invention is used for sheet metal repair for repairing a dent portion caused by damage or the like in a sheet metal made of iron, steel, aluminum alloy or the like constituting a body panel of an automobile. In the sheet metal repairing method, a drawer member with or without solder plating is joined to the surface of the recessed portion of the sheet metal with solder plating by soldering, and the drawer member is pulled outward by a pulling tool. A method of repairing a sheet metal by pulling out and repairing the recessed portion, wherein a soldering iron having the above-described configuration is used when solder plating is performed on the surface of the recessed portion, and an oxide film is formed on the surface of the recessed portion. After pretreatment including removal, the solder material was supplied while being heated and melted by the tip chip plate, and the melted solder material was sucked and stored in each slit of the chip plate by capillary action. Under the condition, a series of teeth on the chip plate are rubbed against the surface of the dent portion while reciprocating in the chip plate width direction while being covered with the molten solder material. In addition to scraping, the molten solder material is flow-supplied from the slit to the surface of the recess immediately after the oxide film is scraped, while blocking oxygen and thus suppressing the formation of a new oxide film. I have to.

  In the solder plating process of the sheet metal repair method, the operation of rubbing the chip-like teeth of the chip plate on the soldering iron against the surface of the indented portion while reciprocating in the chip plate width direction while being covered with the molten solder material is repeated. Thus, the scraping and discharging of the oxide film on the surface of the recess and the flow supply of the molten solder material from the slit to the surface portion immediately after the oxide film is scraped are alternately repeated, thereby In addition, the solder plating area on the surface of the recess gradually increases, and finally the solder plating is reliably applied to the surface of the recess with the oxide film completely removed over the required area. A joint surface for soldering with the member is obtained.

  In the soldering iron, two or more slits are drilled along the chip plate width direction on the tip surface of the chip plate, the thickness of which gradually decreases toward the tip surface. The shape is formed into three or more in the chip plate width direction, and by these structures, the oxide film on the surface of the recess is formed into three or more under strong pressing force by the tip surface of the chip plate whose thickness is gradually reduced. By rubbing with a series of teeth, it can be effectively scraped off.

  Further, in the soldering iron, as described above, the oxide film on the surface of the recessed portion is effectively scraped off by the three or more teeth of the chip plate as described above, and these teeth Supply of the molten solder material stored in the slit to the surface of the recess after scraping of the oxide film immediately after scraping of the oxide film by the tooth-like body by each slit existing between the bodies Is done smoothly.

  In addition, regarding the drilling of the slit on the tip surface of the tip plate in the tip member, Japanese Patent Laid-Open No. 2002-239719 (Patent Document 3) provides a slit in various manners at the tip portion of the tip member. Disclosed is a soldering iron in which excess molten solder material after soldering is sucked into the slit by capillary action, or the molten solder material sucked into the slit is used for the next soldering. In JP 2005-161336 A (Patent Document 4), a slit is provided at the tip of the tip member, and the molten solder material previously melted and stored in the slit is used for soldering. A soldering iron is disclosed.

  However, the prior art soldering iron is a series capable of effectively scraping the oxide film on the surface of the recessed portion of the sheet metal like the tip plate of the tip in the soldering iron according to the present invention. Even if the tip of the tip is rubbed against the surface of the dent and reciprocated, the oxide film is scraped and discharged on the surface of the dent, and the oxide film. The flow of molten solder material from the slit to the surface portion immediately after scraping is not repeated alternately. Therefore, the oxide film is completely removed from the surface of the recess of the sheet metal made of aluminum alloy or the like. It is not possible to obtain a joint surface for soldering with the lead-out member, which is surely subjected to solder plating in this state.

  According to the soldering iron of the invention according to claim 1, when repairing a recess formed in a sheet metal constituting an automobile body panel or the like, in particular, a sheet metal made of an aluminum alloy, the solder of the lead member to the surface of the recess It enables easy joining by attaching.

  According to the soldering iron of the invention according to claim 2, in addition to the above-mentioned effects, the temperature of the tip chip plate is finely adjusted according to the material of the sheet metal to be repaired of the recess. be able to.

  When using the soldering iron to repair a recess formed in a sheet metal constituting an automobile body panel or the like, particularly a sheet metal made of an aluminum alloy, it is easy to join the lead member to the surface of the recess by soldering. In order to make it possible to obtain a bonding surface for soldering to the lead-out member, which is reliably plated with solder on the surface of the recess over the required area with the oxide film completely removed. it can.

FIG. 1 is a side view of a main part of a soldering iron according to an embodiment of the present invention. 2A, 2B, and 2C are a front view, a side view, and a bottom view, respectively, of the tip in the soldering iron according to the embodiment of the present invention. FIG. 3 is an explanatory view schematically showing a solder plating state in the sheet metal repair method using the soldering iron according to the embodiment of the present invention. 4 (A) and 4 (B) are diagrams illustrating a method of repairing a sheet metal using a soldering iron according to the present invention, joining a drawer member to the surface of a recessed portion on which a sheet metal is plated with solder, and subsequent steps of the recessed portion. It is sectional drawing which shows each state at the time of completion of drawing-out.

  As shown in FIG. 1, a soldering iron 1 according to an embodiment of the present invention is connected to a heater member 2, a gripping member 3 adiabatically connected to the heater member 2, and a heat transfer to the heater member 2. The tip member 4 is fixed to the main body 5 with a set screw 7 such that a tip 6 made of copper or copper alloy can be replaced and adjusted in the axial direction. Thus, the tip of the tip 6 protrudes forward from the main body 5 by a required length.

  In addition, the soldering iron 1 which concerns on this invention is not limited to the form described in the said Example.

  As shown in FIGS. 2A to 2C, the tip 6 includes a flat tip plate 8 at the tip, and the flat tip plate 8 has a form in which the thickness gradually decreases toward the tip surface 8a. Present, the front end surface 8a of the chip plate 8 is provided with two slits 8b in the direction perpendicular to the chip plate surface along the width direction of the chip plate, and thereby the front end surface 8a of the chip plate 8 is formed. In addition, three rectangular teeth 8c are arrayed along the chip plate width direction.

  The tip 6 of the soldering iron 1 according to the present invention is not limited to the form described in the above embodiment. For example, the slit 8b may be drilled beyond two locations. Therefore, more than three tooth-like bodies 8c may be arranged. Furthermore, the side surfaces on both sides of the chip plate 8 may be formed of curved surfaces as well as flat surfaces.

  As shown in FIGS. 4A to 4B, the sheet metal repair method using the soldering iron according to the embodiment of the present invention has a recess 11a provided with a solder plating 21 of a sheet metal 11 made of an aluminum alloy or the like. The pull-out member 31 with or without the solder plating 21 is joined to the surface by soldering, and the pull-out member 31 is pulled outward by the pulling tool 32 to pull out the dent 11a and repair it. In the above-described sheet metal repair method, solder plating 21 is applied to the surface of the recess 11a as described below using the soldering iron 1 as described above.

  That is, after pretreatment including removal of the oxide film on the surface of the recess 11a, a solder material is supplied while being heated and melted by the chip plate 8 of the tip 6 as shown schematically in FIG. The series of teeth 8c of the chip plate 8 are covered with the molten solder material 22 in a state where the molten solder material 22 is sucked and stored in each slit 8b of the chip plate 8 by capillary action. While scrubbing against the surface of the recess 11a while reciprocating in the chip plate width direction, the oxide film is scraped off, and the surface of the recess 11a immediately after the oxide film is scraped is subjected to oxygen blocking. Therefore, the molten solder material 22 is fluidly supplied from the slit 8b while suppressing the formation of a new oxide film. In addition, through the said process process, the heating temperature of the said recessed part 11a is preferably hold | maintained at 400 degrees C or less.

  The temperature of the series of teeth 8c itself of the chip plate 8 depends on, for example, the material of the sheet metal to be repaired of the recess, for example, the protruding length of the chip plate 8, the depth of the slit 8b, the heater member It is adjusted appropriately by selecting and adjusting the output of No. 2. According to the actual measurement of the temperature of the tooth-like body 8c, the tooth-like body on the center side exhibits a slightly higher temperature than the tooth-like bodies on both sides thereof.

  According to the present invention, a dent generated due to damage or the like in a sheet metal made of an aluminum alloy, which constitutes a body panel of an automobile, is disposed adjacent to the dent and the material deterioration or the strength of the constituent material of the dent is reduced. It can be applied to sheet metal repair for repairing without the occurrence of ignition of heat insulating materials and other combustible materials.

DESCRIPTION OF SYMBOLS 1 Soldering iron 2 Heater member 3 Holding member 4 Iron tip member 5 Main body 6 Iron tip 7 Set screw 8 Chip board 8a Tip surface 8b Slit 8c Tooth body 11 Sheet metal 11a Recessed part 21 Solder plating 22 Molten solder material 31 Drawer Member 32 Tensioner

Claims (2)

A soldering iron that applies solder plating to the surface of the recess for soldering joining of the drawer member to the surface of the recess in sheet metal repair, and includes a heater member and a gripping member that is adiabatically connected to the heater member And a tip member that is connected to the heater member in a heat transfer manner and projects the tip forward, and the tip includes a flat tip plate whose thickness gradually decreases toward the tip surface, A slit is formed in the tip surface of the chip plate along the width direction of the chip plate so that the molten solder material supplied to the surface of the recess for solder plating can be sucked into and stored in the inside by capillary action. The stored molten solder material is drilled in a direction intersecting the chip plate surface at two or more locations so as to be able to supply the flow of the molten solder material to the surface of the dent, and thereby, on the tip surface of the chip plate in the chip plate width direction. The tooth-like body is formed in three or more so as to be able to scrape and discharge the oxide film on the surface of the recess by reciprocating in the chip plate width direction while being covered with the molten solder material. A soldering iron. 2. The soldering iron according to claim 1, wherein a heat transfer distance from the heater member is adjustable in the tip plate of the tip. 3.

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