WO2008053639A1 - Jig for repairing metal sheet, device for repairing metal sheet using the same and method of repairing metal sheet - Google Patents

Abstract

[PROBLEMS] To provide a means of repairing a metal sheet which has excellent handling properties and a high safety and can be performed without needing skill. [MEANS FOR SOLVING PROBLEMS] A jig for repairing a metal sheet which has a heating unit to be used in a device for repairing a metal sheet (including a common steel plate, a high tension steel plate, an aluminum plate, a stainless plate, etc.), characterized in that the above-described heating unit contains a carbon metal alloy; a device for repairing a metal sheet using the same; and a method of repairing a metal sheet.

Description

 Specification

 Sheet metal repair jig, sheet metal repair apparatus using the same, and sheet metal repair method

 [0001] The present invention relates to a curved surface of a sheet metal (general steel sheet, high-tensile steel sheet, aluminum sheet metal, stainless sheet metal, etc.) constituting a vehicle, an aircraft, a ship, a casing of an article (hereinafter referred to as a vehicle). The present invention relates to a sheet metal repair jig for repairing distortion generated in a plane, a sheet metal repair apparatus including the sheet metal repair jig, and a sheet metal repair method using the sheet metal repair jig.

 Background art

 [0002] As a method of repairing the deformation of the sheet metal, the repaired portion is peeled off, the recessed portion to be repaired is pulled up by a pulling means such as a puller to make it substantially flat, and then the repaired portion is heated. There is a method of repairing the distortion of the repaired part using the subsequent shrinkage caused by cooling. As a method for repairing distortion using heating and cooling, for example, a flame obtained by burning acetylene gas or the like is radiated to heat the vicinity of the puller, and then cooled, and then stretched and distorted. A restoration method (for example, refer to Patent Document 1) is known in which the flat portion of the drawer is heated and pressed and is shrunk by rapidly cooling the heated portion with a cloth or the like wetted with water.

 [0003] In addition, as a grounding means used when repairing a sheet metal of a vehicle or the like, a temporary welding rod is mounted in the longitudinal direction of the center of a columnar base made of a conductive member having a single or several kinds of electrode connecting means. A ground connection device in which a hole (center hole) is provided and a plurality of ground contacts are provided around the opening of the temporary welding rod mounting hole, and a temporary welding rod device for the ground connection device. Insulation sleeve fixedly attached to the other end opening side of the hole, and provisional welding separation means at the head, passing through the compression coil spring and insulation sleeve, compressed to one end opening side of the temporary welding rod mounting hole It consists of a temporary welding rod that is piled on a coil spring and held so that it protrudes. The head of the temporary welding rod is pressed with the tip of one electrode of an electric welding machine and the tip is temporarily welded to the ground surface. The earth contact is pressed and in close contact with the earth surface. There is known a ground-side connection device for a welding machine (see, for example, Patent Document 2).

[0004] Patent Document 1: JP 2005-254315, page 3, fifth paragraph, first line to third line Patent Document 2: JP 11 33732 A

 Disclosure of the invention

 Problems to be solved by the invention

[0005] The invention according to the prior art disclosed in Patent Document 1 uses a heating unit that burns a gas and uses the flame as a heat source, and therefore always supplies gas to maintain the flame as the heating unit. There was a need to do.

[0006] Also, it is very skilled to heat and spray the flame from the torch at a constant distance from the strained part, and to uniformly and appropriately heat the flame over a wide area of the sheet metal. It was necessary.

 [0007] Furthermore, because of the configuration in which gas is injected and burned, there are drawbacks such as high danger to workers and risk of fire due to the surrounding environment.

 [0008] On the other hand, the invention according to Patent Document 2 is excellent in that it can be securely grounded by being welded to an iron plate, and therefore cannot be reliably welded to an aluminum plate. There was a drawback that it was not possible to reliably ground the aluminum plate.

 [0009] The present invention has been made in view of the above circumstances, and is a sheet metal that is excellent in handleability without using a gas flame that is highly dangerous and difficult to control temperature, and that is highly safe and does not require high skill. An object of the present invention is to provide a repair means and a sheet metal repair method using the sheet metal repair means.

 Means for solving the problem

[0010] The present invention relates to a sheet metal repair jig provided with a heating means used in a sheet metal repair apparatus for repairing sheet metal (including general steel sheets, high-tensile steel sheets, aluminum sheet metals, stainless steel sheet metals, etc.). The sheet metal repairing jig is characterized in that the heating means contains an alloy of carbon and metal.

[0011] Further, the present invention provides a sheet metal repair method in which heating and cooling are performed with respect to drawing by a drawing means at a repaired portion of a sheet metal and repair of a protruding portion and distortion generated at the time of drawing, before the drawing means for the sheet metal is installed In addition, the sheet metal repair portion or its vicinity is heated by a heating means, and the heating means is a sheet metal repair jig as a pressing means containing an alloy of carbon and metal, and the sheet metal repair jig is Continuously energize to generate heat, The sheet metal repairing method is characterized in that the heated sheet metal repairing jig is pressed and slid against the sheet metal and heated.

[0012] Further, regarding the method for repairing the sheet metal, the sheet metal is an aluminum sheet metal and has a welding machine as an energizing means, and the welding machine contains an earth connection device and an alloy of carbon and metal as a heating means. A sheet metal repairing jig as a pressing means is provided, and the ground connection device has a ground contact projecting on the lower surface thereof, and the ground contact is a silver contact, and is made of an aluminum sheet metal. Stud bolts are welded to the surface of the steel plate, the bridge member is provided with screwing means for the stud bolt, the ground connection device is sandwiched and pressed between the bridge member and the surface of the sheet metal, and the heating means of the sheet metal repair jig is A method of repairing a sheet metal that is energized by pressing and contacting an aluminum sheet metal and the ground contact by continuous energization, generating heat by energization, and pressing and sliding the heating means that generated heat against the sheet metal. And means for to attain.

 The invention's effect

 [0013] According to the present invention, a sheet metal repairing jig provided with a heating means used in a sheet metal repairing apparatus for repairing sheet metal (including general steel sheets, high-tensile steel sheets, aluminum sheet metals, stainless steel sheet metals, etc.). In the tool, since the heating means is a pressing means containing an alloy of carbon and metal, it is a material that has high carbon resistivity and does not weld to the metal. It can be used as a simple sheet metal repairing means, and it can be done with the force to repair deformed parts by simply pressing the pressing means against the sheet metal without requiring high skill and sliding it on the surface of the sheet metal.

 [0014] Then, the material is made of an alloy of carbon and a metal having a low specific resistance, so that the specific resistance as a whole is reduced, the loss of a large current is suppressed, and the soft force that is a characteristic of carbon itself is also achieved. It is possible to improve wear resistance by eliminating the wear-shuffling defect by using an alloy.

[0015] In addition, unlike the conventional heating by a gas flame, the heating means, which is a pressing means, is pressed against the sheet metal, and the sheet metal is always kept at a certain distance from the heat source, unlike the heating by the gas flame. Since it can heat, uniform heating can be performed easily without requiring skill.

[0016] According to the invention of claim 2, the heating means has an opening having a shaft provided on the holding frame as a rotation shaft. If the roller acts as a heat source and the repaired part is carried out at a uniform speed over a wide range, the heat distribution of the sheet metal is less likely to cause unevenness and work can be done without damage. It is possible to provide a sheet metal repair jig that can be heated.

 [0017] Further, according to the invention of claim 3, on the premise of the configuration of claim 1 or 2, the heating means is a column-shaped mold pressing unit that is not connected to the roller, so that local The shape is suitable for pressing the protruding part, and repair work can be facilitated in narrow deformed places that cannot be worked with rollers.

 According to the invention according to claim 4, in addition to the configuration according to claims 1 and 2, the heating means includes a roller having a shaft provided on the holding frame as a rotation shaft, and a columnar sheet metal pressing member. Because it is equipped with a part, work using a roller and work with a columnar body (sheet metal pressing part) at a narrow deformed part that cannot be performed with a roller is easy without replacing the sheet metal repair jig. It is possible to perform the operation in a short time, and excellent workability can be exhibited.

 [0019] According to the invention of claim 5, by providing the temperature detection means and the temperature control means for controlling the temperature of the heating means, the optimum heating temperature can be adjusted according to the material of the sheet metal. The strength of the force S can be prevented, and the sheet metal can be prevented from burning, and the repair work can be performed multiple times under the same conditions to ensure the quality of the repair work. If the temperature control means is connected to the sheet metal repairing jig, it can be installed, for example, in the apparatus body for sheet metal repairing.

 [0020] According to the invention of claim 6, the heating means is formed by the roller shaft hole or the sensor passage recess by forming the roller shaft hole or the sensor passage recess for storing the temperature detection means inside. The formed space having a substantially hollow shape can reduce the heat capacity and improve the accuracy of temperature detection of the temperature sensor.

 [0021] According to the invention of claim 7, a sheet metal repairing device comprising the sheet metal repairing tool of claim 1, 2, 3, 4 or 5 is used, and the action of the sheet metal repairing jig is used. By doing so, it is possible to provide a sheet metal repairing device that does not require skill and can perform high-quality sheet metal repairing.

[0022] According to the invention according to claim 8, the sheet metal repair device replaces the welding means in the portable welding machine with the sheet metal repair jig according to claim 1, 2, 3, 4, 5 or 6. By adopting a configuration that uses existing portable welding machines, A function as a sheet metal repair device can be added to the bull welder, and an easy and excellent repair can be realized by the jig for sheet metal repair. In addition, by using a portable welder, it is possible to realize a heating means using energization while ensuring high safety.

 [0023] According to the invention of claim 9, in the sheet metal repairing method in which heating and cooling are performed with respect to the drawing by the pulling means of the repaired portion of the sheet metal and the repair of the protruding portion and distortion generated at the time of drawing, Before installing the drawing means, the repaired portion of the sheet metal or its vicinity is heated by a heating means, and the heating means is a sheet metal repairing jig as a pressing means containing an alloy of carbon and metal. Continuously energizing the repair jig to generate heat, and the heated sheet metal repair jig is pressed and slid against the sheet metal to heat it. Since the sheet metal can be heated at a constant distance from the heat source, uniform heating can be easily performed without requiring skill.

 [0024] Therefore, in the invention according to claim 9, by using the sheet metal repair jig of the present invention and heating the repaired portion or its vicinity before pulling out by the pulling means, the puller and stud By heating before installing bolts, etc., the sliding operation with heating means can be performed under the condition that there are no obstacles (pullers, stud bolts, etc.).

 [0025] Further, according to the invention of claim 10, in addition to the configuration of the invention of claim 8, when the sheet metal is drawn by the drawing means, the repaired portion or its vicinity is heated, and after cooling Since the step of removing the drawing means has been added, in addition to the effect of claim 9, the sheet metal is slightly distorted by pulling out the repaired portion or its vicinity by the drawing means while the sheet metal is heated. When the drawn out means is removed after cooling, it is possible to eliminate rebound of the sheet metal (rapid restoration to the original shape).

[0026] According to the invention according to claim 11, in the invention according to claim 9, the sheet metal is an aluminum sheet metal and has a welding machine as a current-carrying means, the welding machine includes a ground connection device, a heating device A sheet metal repairing jig as a pressing means containing an alloy of carbon and metal as a means, wherein the ground connection device has a ground contact projecting on the lower surface thereof, and the ground contact is a silver contact And stud-blasting the stud bolt against the surface of the aluminum sheet metal, The bridge member includes a screwing means for the stud bolt, and sandwiches and presses the connection device main body between the bridge member and the surface of the sheet metal. The heating means of the sheet metal repair jig is formed by continuously energizing the aluminum sheet metal and the ground. Since it is energized in contact with the contacts, heat is generated by energization, and the heating means that generates heat against the sheet metal is pressed and slid, so the stud bolts and bridge members that are welded to the aluminum sheet metal are used. By screwing together with the screwing means, urging the ground connection device downward with the bridge member, and pressing and contacting the aluminum sheet metal, the aluminum sheet metal, which is usually difficult to weld, is continuously sufficient. In addition, it is possible to ground the sheet metal, and it is possible to perform excellent sheet metal repair using the heating means of the sheet metal repair jig of the present invention.

Brief Description of Drawings

FIG. 1 is a partially omitted perspective view showing a sheet metal repair device provided with a sheet metal repair jig 1 according to Embodiment 1 of the present invention.

 FIG. 2 is a perspective view showing a sheet metal repair jig according to Embodiment 1 of the present invention.

 FIG. 3 is a partially exploded front view showing a sheet metal repair jig 1 according to Embodiment 1 of the present invention.

 FIG. 4 is a partial cross-sectional front view of a sheet metal repair jig according to Embodiment 1 of the present invention.

FIG. 5 is an electrical wiring diagram in which a part of the sheet metal repair device according to Embodiment 1 of the present invention is omitted.

FIG. 6 is a perspective view showing a ground connection device to which a bridge member is attached in the sheet metal repair device according to Embodiment 1 of the present invention.

 [Fig. 7] (a) A partial cross-sectional view showing a state before the bridge member and the ground connection device of Embodiment 1 of the present invention are attached to a sheet metal, and (b) a state showing the state attached to the sheet metal. FIG.

 FIG. 8 is a partially omitted illustration showing a state in which the sheet metal repair device according to Embodiment 1 of the present invention is installed on the sheet metal.

 FIG. 9 is a perspective view showing a sheet metal repair jig according to Embodiment 2 of the present invention.

 FIG. 10 is a front view showing a sheet metal repair jig according to Embodiment 2 of the present invention.

FIG. 11 is a partial cross-sectional front view showing a sheet metal repair jig according to Embodiment 2 of the present invention. FIG. 12 is a front view showing a sheet metal repair jig according to Embodiment 3 of the present invention.

13] It is a front view with a partial cross section showing a sheet metal repair jig according to Example 3 of the present invention. [14] So 14] It is a partial cross section with a sheet metal repair jig according to Example 4 of the present invention. FIG. 15 is a front view of the bridge member 1 according to an embodiment of the present invention and a perspective view showing a ground connection device according to another embodiment.

FIG. 16] (c) A partial cross-sectional front view and (d) a bottom view showing a bridge member according to Embodiment 1 of the present invention and a ground connection device according to another embodiment.

FIG. 17] A perspective view showing two ground connection devices connected by a bridge member according to Embodiment 1 of the present invention and a T-shaped connection member according to another embodiment.

18] (e) A front view, partly in cross section, and (f) a bottom view showing the relationship between two ground connection devices and a T-shaped connecting member according to another embodiment of the present invention.

Explanation of symbols

 1 Sheet metal repair jig

 10 Laura

 11 Temperature sensor

 110 Cape Nore for sensor

 111 Temperature controller

 113 Control board

 114 Control elements

 115 Power supply

 116 Breaker

 117 transformer

 118 Hand-operated switch

 119 signal line

 12 Holding frame

12 A Holding frame bearing B Retaining frame collar Roller shaft

0 Sensor contact part 1 Roller shaft hole

 Shaft

 Sheet metal pressing part A Front end sheet metal pressing part B Side sheet metal pressing part 0 Sensor contact part 1 Sensor penetration recess Connection part

 Shaft hole

 Sensor holder 0 Sensor holding passage Connection bracket Sheet metal restoration device body Electrode

 Cape Nore Grip Switch

 Bridge member Bottom plate

A Mounting hole

B Positioning hole

 Side plate

 Top board

A hole

Jumami nut 330 Knob

 331 Stopper

 4 Ground connection device

 40 Earth contact

 41 T-shaped connecting member

 42 Compression coil spring

 43 Ground connection rod

 44 Insulation sleeve

 45 Electrode connection

 46 Bottom

 5 Studbonoreto

 6 Sheet metal

 7 Sheet metal repair device

 BEST MODE FOR CARRYING OUT THE INVENTION

 [0029] A heating means used in a sheet metal repairing apparatus for repairing a sheet metal is provided, the heating means being a pressing means containing an alloy of carbon and metal, and temperature detection for controlling the temperature of the heating means. The sheet metal repairing jig provided with the means and temperature control means is a material that has high carbon specific resistance and does not weld to the metal by continuously energizing the sheet metal repairing jig. Unlike conventional gas flame heating, the sheet metal can be heated at a fixed distance from the heat source, enabling uniform heating without requiring high scouring. Thus, an excellent sheet metal repairing jig capable of easily repairing a deformed portion is realized by simply pressing the sheet metal repairing jig against the sheet metal and sliding it on the surface of the sheet metal.

 Example 1

FIG. 1 is a perspective view with a part omitted showing a sheet metal repair device provided with a sheet metal repair jig 1 according to Embodiment 1 of the present invention, and FIG. 2 shows the sheet metal repair jig according to Embodiment 1. FIG. 3 is a front view showing a partially exploded state of the sheet metal repair jig 1 according to the first embodiment, and FIG. 4 is a front view showing a partial cross section of the sheet metal repair jig according to the first embodiment. Figure 5 shows the sheet metal repair according to Example 1. Fig. 6 is a perspective view showing a ground connection device with a bridge member attached to the sheet metal repair device according to the first embodiment, and Fig. 7 is a bridge member and ground connection of the first embodiment. FIG. 8 is a partial cross-sectional view showing a state before the device is attached to the sheet metal, (b) a partial cross-sectional view showing the state of being attached to the sheet metal, and FIG. It is explanatory drawing partially abbreviate | omitted which shows the state installed with respect to.

[0031] The sheet metal repairing apparatus according to Example 1 of the present invention is based on a portable welding machine for general steel sheets. As shown in FIG. 1, a sheet metal repairing jig 1 and a sheet metal repairing device are provided. An apparatus main body 2, a ground connection device 4, and a bridge member 3 that presses and fixes the ground connection device 4 against a sheet metal are provided.

 The sheet metal repair device main body 2 includes a cable 21 that is a power supply means, a grip portion 22 to which the tip of the cable 21 is connected, and an electrode portion 20 that extends from the grip portion 22. Usually, a portable welding machine for general steel plates is mounted with an electrode tip member (not shown) on the electrode portion 20, but the sheet metal repair device according to Example 1 of the present invention replaces the electrode tip member with the sheet metal repair treatment. This is a configuration in which ingredient 1 is installed.

 [0033] As shown in FIGS. 2 to 4, the sheet metal repairing jig 1 in the sheet metal repairing apparatus has a roller 10 for applying heat to the sheet metal 6, and the roller 10 is rotatable. The roller shaft 13 and the front frame-shaped holding frame 12 serving as a bearing for the roller 10 (i.e., the structure in which the upper ends of the left and right holding frame bearing portions 12A are respectively connected to the end portions of the holding frame flange portion 12B) Is provided. In addition, a shaft body 14 is provided upright at the center of the holding frame 12.

 [0034] The roller 10 uses an alloy of copper and carbon. Carbon has a relatively high specific resistance and functions as a heat source for applying heat to the sheet metal, and does not weld to the sheet metal. For this reason, the force suitable as a heat source itself has low wear resistance, and therefore, an alloy using copper as a material capable of improving the wear resistance and suppressing large current loss. With this configuration, a heat source, efficient heat supply, heat conduction characteristics, and durability when used as the roller 10 are ensured.

Further, the roller shaft 13 that enables the roller 10 to rotate has a substantially hollow shape with a roller shaft hole 131 opened on a side surface. A wall-shaped sensor abutting portion 130 serving as a node is provided at one location in the center of the roller shaft 13. Heat capacity can be increased by making the roller 10 substantially hollow. The size is reduced to improve the accuracy of temperature detection of the temperature sensor.

 [0036] Further, a temperature sensor holding body 18 is provided in contact with the outer surface from one holding frame bearing portion 12A of the holding frame 12 to the holding frame flange portion 12B. The temperature sensor holding body 18 is formed with a sensor holding passage 180 through which the temperature sensor 11 which is a temperature detecting means is passed.

 [0037] The temperature sensor 11 passes through the roller shaft hole 131 of the roller shaft 13 through the sensor holding passage 180 of the temperature sensor holding body 18, and the tip (detection portion) of the temperature sensor 11 contacts the sensor contact portion 130. Arranged in contact. In the sheet metal repair device according to the first embodiment, the temperature detected by the temperature sensor 11 is set as an upper limit of 180 ° C and a lower limit of 80 ° C.

 As shown in FIG. 1, the temperature control of the roller 10 serving as a heating means is performed by a temperature controller 111 serving as a temperature control means. The temperature controller 111 is built in the sheet metal repair device body 2.

 FIG. 5 shows an outline of the circuit configuration of the sheet metal repair device in the present embodiment. The circuit configuration includes a power supply circuit and an output side circuit connected to the power supply circuit via a transformer.

 [0040] The power supply circuit includes a main body control board 113, a temperature regulator 111, a control element 114 which is an electronic switch capable of adjusting an output, a temperature sensor 11 (thermocouple sensor) via a breaker 116 from a power source 115. ).

 [0041] One end on the electrode side of the output side circuit is provided with a roller 10 as a heating means, and the other end side is connected to a ground connection device 4 on the ground side. The signal line 119 of the temperature sensor 11 installed in the roller 10 is connected to the temperature controller 111! /.

 [0042] By turning on the hand operation switch 118, the main body control board 113, the temperature controller 111, and the temperature sensor 11 are energized.

 [0043] The temperature sensor 11 embedded in the roller 10 measures the temperature of the roller 10 and outputs it to the temperature controller through the temperature sensor detection line. The temperature controller is equipped with a set temperature control knob, and when the temperature reaches the temperature arbitrarily set by the set temperature control knob (hereinafter referred to as the set temperature), the contact output of the temperature controller works. Controls the output level. When the measured temperature exceeds the upper limit of the set temperature, the temperature controller contact is turned on and off to maintain and control the constant temperature.

[0044] In addition, the control element is installed in the main body by turning on the hand operation switch 118. It operates in conjunction with the output of an internal timer that repeats intermittently at regular intervals, and controls the temperature to become a constant temperature set by the temperature controller 111.

 In this embodiment, the CPU can also control the ON / OFF driving of the control element and the adjustment of the output by the internal intermittent timer output or the like.

 On the other hand, the sheet metal repair jig 1 according to the first embodiment includes a connection fitting 19 having a sheet metal pressing portion 15 as a heating means other than the roller 10.

 [0046] The connection fitting 19 has a cylindrical shape having the shaft hole 17 at one end and a connecting portion 16 to the electrode portion 20 at the other end, and further has a columnar shape from the longitudinal center position of the cylindrical body to the side. The sheet metal pressing part 15 has a T-shape. The material of the sheet metal pressing portion 15 is a copper-carbon alloy as a heat-resistant alloy, similar to the roller 10.

 [0047] The shaft body 14 is fitted in the shaft hole 17 of the connection fitting 19, and the connection fitting 19 can be rotated with respect to the shaft body 14.

 [0048] The sheet metal repairing apparatus and the sheet metal repairing jig 1 having the above-described configuration are described below with respect to the usage method and the installation configuration for the aluminum sheet metal. It should be noted that aluminum sheet metal cannot be grounded sufficiently because it cannot be welded sufficiently with the ground side connection device for welding machines for general steel plates. If the material of the sheet metal 6 is made of iron, such as a high-strength steel plate, for example, the ground side connection device for a welding machine according to Patent Document 2 disclosed in the prior art should be used as the energizing means on the ground side. Can do. (That is, the grounding connection rod of the ground side connection device for the welding machine is welded to the sheet metal and energized.)

[0049] In addition, unlike a spot welder having a short energization time of about 0.2 to 0.5 seconds, the sheet metal repair device according to the present invention continuously energizes a large current for a long time. A specially configured ground connection device 4 is required to ground the sheet metal repair device.

 First, the ground connection device 4, which is one of a pair of electrodes necessary for welding, is attached to the sheet metal 6. FIGS. 6 and 7 (a) and 7 (b) show a ground connection device 4 corresponding to the sheet metal repair device according to the first embodiment.

[0051] The ground connection device 4 according to the present example has a central hole penetrating in the longitudinal direction of the central portion of the columnar base member made of a conductive member having the electrode connection portion 45, and one end (lower surface) of the central hole. 46 side) Plural grounding contacts 40 project around the opening and penetrate the other end opening side of the center hole. The insulation sleeve 44 is fixedly attached, and the ground is provided with a temporary welding separation means at the head, and passes through the compression coil spring 42 and the insulation sleeve 44 and protrudes and holds against the compression coil spring 42 toward one end opening side of the central hole. A connecting rod 43 is provided. The earth contact 40 is a silver contact having a particularly low electric resistance.

 [0052] The bridge member 3 is obtained by pressing a steel plate, and the side wall 31 formed by bending the left and right sides of the top plate 32 downward and the lower end side of the side wall 31 are bent outward. The bottom plate 30 is continuously formed. The bottom plate 30 has a mounting hole 30A for passing the stud bolt 5 and a positioning hole 30B for positioning the stud bolt 5, and the top plate 32 has a relief hole 32A for letting out the upper end of the ground connection device 4. It has.

 [0053] The ground connection device 4 is installed by first using a capacitor discharge type stud welding method, in which two stud bolts 5 are fused in the vicinity of the repaired surface made of aluminum, and the bridge member 3 and the repaired surface. Place the ground connection device 4 between them. The ground connection device 4 and the escape hole 32A in the top plate 32 of the bridge member 3 are matched, and the stud bolt 5 and the mounting hole 30A in the bottom plate 30 of the bridge member 3 are matched, so that the ground connection device 4 is bridge member Hold between 3 and the surface to be repaired.

 Next, a nut nut 33 having a female screw corresponding to the stud bolt 5 is attached and tightened, and the ground connection device 4 is biased downward by the bridge member 3. The knob nut 33 has a knob 330 disposed on the upper surface side of the bottom plate of the bridge member 3 and a stopper 331 for preventing the release from being exposed on the lower surface side. By preventing the nut from being removed from the bridge member 3 even when it is screwed into the stud bolt 5! /, N! /, The nut nut 33 is prevented from being lost. By installing the ground connection device 4 as described above, the sheet metal repair jig 1 according to the embodiment of the present invention described below can be used. Further, since the positioning hole 30B is provided, the predetermined position of the sheet metal can be confirmed from the positioning hole 30B even when the stud bolt 5 is screwed, so that the mounting position of the stud bolt 5 can be accurately determined. Can be determined.

[0055] In the present embodiment, the sheet metal repairing jig is (1) a pulling out process until a puller or the like as a pulling means (hereinafter referred to as a puller and a stud bolt; the same applies in the present embodiment) is removed. And (2) heating and cooling against distortion of the stretched sheet metal remaining after removal of the puller, etc. It is used in the repair process that shrinks instead.

 [0056] (1) In the drawing process until the puller or the like as the pulling means is removed, the heating operation by the sheet metal repair jig 1 can be performed before the puller or the like is attached, or the puller or the like is attached. A heating operation can be performed in parallel with the withdrawal of the recessed portion of the sheet metal 6. Also, both heating operations can be performed together.

 [0057] By heating the sheet metal using the roller 10 before mounting the puller or the like, the roller 10 can be slid under the condition that there is no obstacle such as the puller and the stud bolt 5, so that the higher Accuracy can be repaired and work efficiency can be improved.

 [0058] In the invention according to the first embodiment, the connecting portion between the puller and the sheet metal 6 and its vicinity are pressed and heated in parallel with attaching the puller or the like and performing the bow I extraction of the recessed portion of the sheet metal 6. To do. By doing so, the sheet metal 6 becomes softer and naturally cooled after being pulled out by the puller, so that the sheet metal 6 is held in the shape after being pulled out, and the rebound resilience generated when the puller is removed is reduced and rebounded (original Rapid restoration to the shape of For this reason, the puller can be removed while maintaining the drawn shape.

 [0059] (2) Then, in the repairing process, the stretched strain of the sheet metal 6 after being pulled out is repaired by pressing the roller 10 as a heating means against the sheet metal 6 in a wider area including the strained portion. To do.

 At this time, the heating temperature by the roller 10 is kept substantially constant at a predetermined temperature suitable for the sheet metal 6 by the temperature control means. In the conventional gas flame injection, the distance between the torch and the sheet metal varies, but according to the present invention, the distance between the roller 10 serving as the heat source and the sheet metal 6 is always constant. With these elements, the use of the sheet metal repairing jig 1 in the present invention makes it possible to perform uniform heating very easily without requiring any special skill. In addition, since the operation is only to slide the roller 10, unlike a method using a gas flame or the like, it is possible to ensure high! / Safety.

[0061] Further, the sheet metal pressing portion 15 in the connection fitting 19 dents the protruding portion of the sheet metal 6 by heating and pressing a local protruding portion formed as a pulling work or distortion by a puller. Then, local contraction (thermal contraction) is performed, and the sheet metal 6 is finally made smooth by natural cooling. Example 2

 Next, FIG. 9 to FIG. 11 show a sheet metal repair jig 1 according to Embodiment 2 of the present invention. FIG. 9 is a perspective view showing a sheet metal repair jig according to the second embodiment of the present invention, FIG. 10 is a front view showing the sheet metal repair jig according to the second embodiment, and FIG. 11 is a sheet metal according to the second embodiment. It is the front view made into the partial section which shows the jig for restoration.

 [0063] The sheet metal repair jig 1 according to the second embodiment has a configuration that does not include the temperature detection unit and the temperature control unit as compared with the configuration of the first example. Therefore, the configuration of the roller 10 according to the second embodiment does not include the temperature sensor 11 or the sensor contact portion 130 in the roller shaft 13 that is a configuration for detecting the temperature.

 The second embodiment is suitable for use in an environment that does not require strict temperature control as compared with the first embodiment, and is lower in cost and weight than the sheet metal repair jig 1 according to the first embodiment. be able to. Example 3

 Further, FIG. 12 and FIG. 13 show a sheet metal repair jig 1 according to Embodiment 3 of the present invention. FIG. 12 is a front view showing a sheet metal repair jig 1 according to Embodiment 3 of the present invention, and FIG. 13 is a front view with a partial cross section showing the sheet metal repair jig 1 according to Embodiment 3.

[0066] The sheet metal repair jig 1 according to the third embodiment is replaced with a roller 10 in the sheet metal repair jig 1 according to the first embodiment and a configuration for holding the roller 10, and a columnar sheet metal pressing portion 15 ( The following is a configuration provided with the front end side metal plate pressing portion 15A and! /, U).

 That is, in this embodiment, the two sheet metal pressing portions, that is, the front end sheet metal pressing portion 15 A provided in place of the roller 10 and the sheet metal pressing portion 15 (hereinafter referred to as the side sheet metal pressing portion 15 B) provided in the connection fitting 19. Has 15.

[0067] These two sheet metal pressing portions 15 have different diameter dimensions. The diameter dimension of the front side sheet metal pressing part 15A is about 30 mm, and the diameter dimension of the side sheet metal pressing part 15B is about 18 mm. The configuration of the connection fitting 19 in the second embodiment is the same as that in the first embodiment.

In addition, as shown in FIG. 12, a temperature sensor holding body 18 is provided in contact with the side portion of the distal end side metal plate pressing portion 15A. In the temperature sensor holder 18, the temperature sensor is the same as in Example 1.

A sensor holding passage 180 for passing 11 is formed.

[0069] Furthermore, at the position corresponding to the sensor holding passage 180 in the front end side metal plate pressing portion 15A. Sensor penetration recess 151 is provided, and the temperature sensor 11 tip is in contact with the sensor abutment 150, which is the inner surface of the sensor penetration recess 151. It is said. The sensor cable 110 of the temperature sensor 11 is connected to the control element 114, and the control element 114 causes the temperature regulator 111 and the temperature sensor 11 to keep the temperature of the sheet metal pressing portion 15A within a predetermined range. It is the structure which controls to.

 Example 4

 [0070] Fig. 14 shows a sheet metal repair jig 1 according to a fourth embodiment of the present invention. The sheet metal repairing jig 1 according to the fourth embodiment is similar to the configuration of the third embodiment, but the heating means includes only one columnar sheet metal pressing portion 15 having the temperature sensor 10. .

 [0071] In the fourth embodiment, as in the third embodiment, the columnar sheet metal pressing portion 15 is pressed against the sheet metal 6 to slide the surface of the sheet metal, which is always different from the heating by the conventional gas flame. Since the sheet metal 6 can be heated at a certain distance from the heat source, it is common in that uniform heating can be performed easily without requiring skill. The fourth embodiment is provided with only one columnar sheet metal pressing portion 15 and has a shape particularly suitable for pressing a local projecting portion. It specializes in making it easier.

 In the present invention, the configuration of the ground connection device 4 is not limited to the configuration disclosed in the first embodiment, and the bridge member 3 and the stud bolt 5 are used for the ground connection device 4 having various configurations. This includes the application of the installation method.

 Accordingly, for example, the configuration of the ground connection device 4 includes the ground connection device 4 having a configuration without the ground connection rod shown in FIGS. 15 and 16, and the T-shaped coupling member 41 shown in FIGS. 17 and 18. It can also be applied to two earth connection devices 4 connected together.

The ground connection device 4 having no ground connection rod shown in FIG. 15 and FIG. 16 does not have a ground connection rod with respect to the high-strength steel plate. Therefore, the conventional installation method for the high-strength steel plate is used. Although it cannot be used, it is excellent in that it is lightweight and can be reduced in cost. 17 and 18 is a grounding means suitable for handling a large current as shown in the invention according to Example 1 of the present invention. [0075] The temperature setting of the heating means of the second embodiment and the third embodiment of the present invention is approximately 80 ° C to 180 ° C as in the first embodiment. However, in the method for repairing an aluminum sheet metal using the heating means in the present invention, it can be appropriately determined depending on the material and thickness of the sheet metal, which is not limited to the temperature condition.

Note that the sheet metal repairing jig 1 in the present invention is not limited to the configuration including the connection fitting 19 described in the first to third embodiments. For example, each of the first to third embodiments described above is implemented. A configuration in which the connection fitting 19 is removed from the configuration of Example 1 can also be adopted.

 [0077] Further, in the configuration including two or more sheet metal pressing portions 15, any of the diameters of the distal end side metal sheet pressing portion 15 (15A) and the side sheet metal pressing portion 15 (15B) may be increased. In this embodiment, a sheet metal pressing portion 15 having a large diameter (a large area in contact with the sheet metal 6) is formed by the frequently used tip side metal sheet pressing portion 15 (15B), and the side sheet metal pressing portion 15 (15B) is assisted. By adopting a sheet metal pressing part 15 with a small diameter for the purpose of pressing in detail, it has a highly convenient structure.

 [0078] Regarding the materials of the roller 10 and the sheet metal pressing portion 15, in this embodiment, the carbon content in the alloy is approximately 10 wt% to 50 wt%. When used within this range, the balance between wear resistance and electrical conductivity is extremely excellent, and a suitable heating means can be obtained. If the carbon content in the alloy is less than about 10%, the heat generation performance of the carbon due to energization will be insufficient. In addition, if the carbon content in the alloy exceeds 50%, the wear resistance is lowered and sufficient performance cannot be exhibited.

 [0079] The columnar sheet metal pressing portion 15 forms not only the pressing operation by dropping the corners of the respective edges, but also allows the sliding operation to the sheet metal smoothly like the roller 10. it can. In addition, by making the shape narrower than that of the roller 10, heat treatment can be performed at the pressing portion 15 for a narrow repaired area that cannot be processed by the roller 10, so that it exhibits extremely high convenience. To do.

[0080] Among the jigs for repairing a sheet metal according to the present invention, in the configuration having the roller 10, in Example 1, the diameter dimension of the roller 19 is the configuration in which the diameter dimension of the longitudinal center portion is the largest. The present invention is not limited to this. The entire diameter may be the same (ie, cylindrical).

[0081] Normally, the roller 10 is made of a single metal such as iron or stainless steel, and when a large current is passed, local current concentration at the contact surface with the same or other metal plate or high-tensile steel plate. As a result, arcs are intermittently generated, and numerous damages (deposition marks) due to arcs are generated in a wide range on the steel sheet surface. According to the configuration of the present invention, no arc is generated by using carbon. Furthermore, by using a metal in combination, durability was improved in the range where virtually no arc was generated, and uniform and sufficient heating was possible only by sliding and pressing the sheet metal without requiring skill.

 [0082] As described above, examples of the alloy that performs the function of the present invention together with carbon include copper, aluminum, brass (brass), iron, stainless steel, tungsten, titanium, carbon steel, lead, and the like. S, The present invention is not limited to combinations with these alloys.

 [0083] Further, in the embodiment of the method for repairing an aluminum sheet metal according to the present invention, a force using a nut nut as a fixing means for the bridge portion. The present invention is not limited to the above configuration, and a normal nut or the like is used as the fixing means. You can also

 [0084] Each "cooling" in the drawing process and the repairing process in the present invention is not limited to natural cooling. In this invention, it replaces with natural cooling and includes performing by putting the cloth wetted with water on a sheet metal. It also includes the combination of natural cooling and cooling with water-coated cloth.

 Further, the circuit configuration disclosed in the embodiment of the present invention is merely an example, and the procedure of information processing of the detected temperature, the configuration of the hardware means including the control means, etc. Various known circuit configurations, information processing, configurations of hardware means, and the like, which are not limited, can be used.

Claims

 The scope of the claims  [I] A sheet metal repair jig provided with a heating means used in a sheet metal repairing apparatus for repairing a sheet metal, wherein the heating means is a pressing means containing an alloy of carbon and metal. Repair jig.  [2] The sheet metal repair jig according to claim 1, wherein the heating means is a roller having a shaft provided on the holding frame as a rotation shaft. [3] The jig for repairing a sheet metal according to claim 1, wherein the heating means is a columnar sheet metal pressing portion.  4. The sheet metal repair jig according to claim 1, wherein the heating means includes a roller having a shaft provided on the holding frame as a rotation shaft and a columnar sheet metal pressing portion. 5. The sheet metal repair jig according to claim 1, 2, 3, or 4, comprising temperature detection means and temperature control means for controlling the temperature of the heating means. [6] The heating means is characterized in that a roller shaft hole for storing the temperature detection means or a sensor through recess is formed, and the temperature detection means and temperature control means for controlling the temperature of the heating means are provided. The jig for sheet metal repair according to claim 1, 2, 3 or 4. [7] A sheet metal repairing device comprising the sheet metal repairing jig according to claim 1, 2, 3, or 4. Yes  [8] The sheet metal repairing device comprising the sheet metal repairing jig according to any one of [1], [2], [3] and [4], comprising temperature detecting means and temperature control means for controlling the temperature of the heating means.  [9] The heating means includes a roller shaft hole or a sensor through recess for housing the temperature detection means therein, and has a temperature detection means and a temperature control means for controlling the temperature of the heating means. A sheet metal repairing device comprising the jig for repairing sheet metal according to 2, 3 or 4.  [10] A sheet metal repair device comprising a sheet metal repair jig instead of the welding means in a portable spot welder,  The sheet metal repair jig is a sheet metal repair jig provided with a heating means used in a sheet metal repair device for repairing a sheet metal, wherein the heating means contains a carbon and metal alloy as a pressing means. A sheet metal repair device characterized by being a jig for use. [II] The heating means of the sheet metal repair jig is a roller having a shaft provided on the holding frame as a rotation axis. The sheet metal repair device according to claim 10, wherein: [12] The heating means of the sheet metal repair jig is a columnar sheet metal pressing portion. The sheet metal repair device according to 0. 13. The sheet metal repairing apparatus according to claim 10, wherein the heating means of the sheet metal repair jig includes a roller having a shaft provided on the holding frame as a rotation shaft and a columnar sheet metal pressing portion. 14. The sheet metal repair device according to claim 1, wherein the welding means in the portable spot welder includes a temperature detection means and a temperature control means for controlling the temperature of the heating means. 4. A sheet metal repairing apparatus, wherein the sheet metal repairing jig is replaced with the sheet metal repairing jig described in item 4.  [15] In the sheet metal repair device, the welding means in the portable spot welder is such that the heating means forms a roller shaft hole or a sensor through recess for storing the temperature detection means inside, and controls the temperature of the heating means. 5. A sheet metal repairing apparatus, comprising a temperature detection means and a temperature control means for replacing the sheet metal repairing jig according to claim 1, 2, 3 or 4.  [16] In the sheet metal repairing method, in which heating and cooling are performed for drawing out the sheet metal repairing part by the pulling means and repairing the protruding part and distortion generated during the drawing,  Before installing the drawing means for the sheet metal, heat the heating area at or near the repair area of the sheet metal.After the drawing by the drawing means is completed, remove the drawing means and then at the repair area of the sheet metal or near it. In contrast, it shall be heated by heating means and then cooled.  The heating means is a sheet metal repairing jig that is a pressing means containing an alloy of carbon and metal, and the sheet metal repairing jig is continuously energized to generate heat. A method for repairing a sheet metal, wherein the sheet metal is pressed and slid and heated. 17. The method of repairing a sheet metal according to claim 16, wherein when the sheet metal is drawn by the drawing means, the repaired portion or its vicinity is heated and the drawing means is removed after cooling.  [18] The sheet metal is aluminum sheet metal, A welding machine as an energization means, the welding machine comprising a ground connection device and a charcoal as a heating means; It has a jig for sheet metal repair as a pressing means containing an alloy of element and metal,  The ground connection device has a ground contact projecting on the lower surface of the ground connection device, and the ground contact is a silver contact.  Stud bolts are fused to the surface of the aluminum sheet metal, and the bridge member is provided with screwing means for the stud bolt, and sandwiches and presses the ground connection device between the bridge member and the sheet metal surface,  The heating means of the sheet metal repair jig is energized by pressing the aluminum sheet metal and the ground contact by continuous energization, and generates heat by energization,  18. The method for repairing a sheet metal according to claim 16, wherein the heating means that generates heat against the sheet metal is pressed and slid.