JP3154968U - Sheet metal repair jig - Google Patents

Abstract

An object of the present invention is to provide a sheet metal restoration means that is excellent in handling, safe, and does not require high skill without using a gas flame that is dangerous and difficult to control temperature in use in an environment that does not require strict temperature control. I will provide a.
A sheet metal repairing jig 1 having heating means made of an alloy of carbon and metal, which is mounted and used on an electrode portion in a sheet metal repairing apparatus, and is capable of rotating a roller 10 serving as a heating means and a roller. A sheet metal repairing jig comprising a roller shaft to be mounted and a holding frame 12 which is a bearing of the roller shaft and has a top-shaped holding frame 12 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. The tool is characterized in that a shaft body is provided upright in the center of the holding frame flange portion of the holding frame, and the roller rotates with the shaft body as a rotation shaft.
[Selection] Figure 1

Description

This invention arises vehicles, aircraft, ships, housing or the like of the article sheet metal constituting the (hereinafter. Referred to the vehicle, etc.) to the curved surface or plane of the (generally steel, high tensile steel, aluminum sheet metal, stainless steel sheet metal) The present invention relates to a sheet metal repair jig for repairing distortion.

  As a method of repairing the deformation of the sheet metal, the coating of the repaired part is peeled off, the recessed part to be repaired is pulled up by a pulling means such as a puller to make it generally flat, and then the repaired part is heated and then cooled. There is a method of repairing the distortion at the repaired part by using the contraction caused by. As for repairing distortion using this heating and cooling, for example, after heating the vicinity of the puller by radiating a flame obtained by burning acetylene gas or the like, it was 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 to shrink the heated portion with a cloth or the like wetted with water, thereby performing the restoration.

  In addition, as a grounding means used when repairing a sheet metal of a vehicle or the like, a temporary welding rod mounting hole (center) is formed in the longitudinal direction of the central portion of the columnar base member made of a conductive member having a single or several kinds of electrode connecting means. A ground connection device having a plurality of contact points projecting around one end opening of the temporary welding rod mounting hole, and the other end of the temporary welding rod mounting hole of the ground connection device Insulating sleeve fixed to the opening side, and temporary welding separating means on the head, penetrating the compression coil spring and the insulating sleeve, one end opening side of the temporary welding rod mounting hole against the compression coil spring A temporary welding rod held so as to protrude, the head of the temporary welding rod is pressed with one electrode tip of the electric welding machine, the tip is temporarily welded to the ground surface, and the ground contact is grounded Welding machine characterized by being pressed and adhered to the surface Second connecting terminal device (e.g., see Patent Document 2.) It is known.

Japanese Patent Laying-Open No. 2005-254315, page 3, fifth paragraph, first line to third line JP 11-33732 A

  Since the invention according to the prior art disclosed in Patent Document 1 uses a heating means that burns gas and uses the flame as a heat source, it is necessary to always supply gas in order to maintain the flame that is the heating means. was there.

  In addition, it is very skillful to heat the flame sprayed from the torch at a constant distance from the strained part and to spray and heat it uniformly over a wide area of the sheet metal.

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

  On the other hand, the invention according to Patent Document 2 is excellent in that it can be securely grounded by welding to an iron plate, but it cannot be reliably welded to an aluminum plate. On the other hand, there was a drawback that the earth could not be reliably taken.

This invention is intended been made in consideration of the above circumstances, the use of environment that does not require strict temperature control, without using the difficult gas flame of high temperature management risk, excellent handling properties, high safety, to provide a does not require sheet metal repair jig high skill, it is an object of invention is to solve.

This invention mounts used in the electrode section in the sheet metal repair apparatus, a sheet metal repair jig having heating means consisting of carbon and metal alloys, and the roller is the heating means, and rotatable roller In a jig for repairing a sheet metal, comprising a roller shaft and a holding frame that is a bearing of the roller shaft and has upper and lower holding frame bearings connected to the ends of the holding frame flanges, respectively. A sheet metal repairing jig characterized in that a shaft body is provided upright in the center of a holding frame collar portion of a frame, and a roller rotates about the shaft body as a rotation shaft. To do.

The present invention is, per the above configuration sheet metal repair jig having a shaft hole in which the shaft body is fitted at one end, the sheet metal pressing portion of the pillar to the a-side towards connection portion between the electrode portion on the other end A sheet metal repairing jig comprising a projecting T-shaped connection fitting and having a configuration in which the connection fitting is rotatable with respect to a shaft body is used as a means for solving the problem.

According to the present invention, the sheet metal is attached use in the electrode portion of the sheet metal repair apparatus for repairing a (generally steel,. Including high tensile steel, aluminum sheet metal, stainless steel sheet metal), made of carbon and metal alloys A jig for repairing a sheet metal provided with a heating means, a roller as the heating means, a roller shaft that can rotate the roller, and a bearing for the roller shaft, and the upper ends of the left and right holding frame bearing portions respectively In a sheet metal repair jig having a front frame-shaped holding frame connected to the end of the holding frame collar, a shaft is provided upright in the center of the holding frame collar of the holding frame, and the shaft is rotated. Since the roller rotates as the moving shaft, if the roller acts as a heat source and the repaired part is performed over a wide range at a uniform speed, the heat distribution of the sheet metal is less likely to be uneven and without being scratched. Can work and can heat stably It is possible to provide a gold repair tool.

Further, according to the invention according to claim 2, assuming the configuration of the first aspect, it has a shaft hole which the shaft body is fitted to one end, toward the side having a connection portion between the electrode portion on the other end With a T-shaped connection fitting projecting a columnar sheet metal pressing part, the connection fitting can be rotated with respect to the shaft body, so that the work using the roller and the width that cannot be done with the roller are narrow. It is possible to easily perform the work by the columnar body (sheet metal pressing portion) at a deformed portion or the like without exchanging the sheet metal repair jig, and exhibit excellent workability.

It is a perspective view of a sheet metal repair jig according to an embodiment of the present invention. It is a front view showing a sheet metal repair jig according to an embodiment of the present invention. The sheet metal repair jig according to an embodiment of the present invention is a front view of a partial cross-section of. Is a perspective view showing a sheet metal repair apparatus according to an embodiment of the present invention. The ground connection device fitted with a bridge member in the sheet metal repair apparatus according to an embodiment of the present invention is a perspective view showing. BRIEF DESCRIPTION OF THE DRAWINGS It is a partial cross section figure which shows the state before attaching the bridge member and earth | ground connection apparatus of the Example of this invention to (a) sheet metal, (b) It is a partial cross section figure which shows the state attached with respect to the sheet metal.

A jig for sheet metal restoration equipped with a heating means made of an alloy of carbon and metal, which is mounted and used on an electrode part in a sheet metal restoration apparatus, a roller which is the heating means, a roller shaft which can rotate the roller, In a sheet metal repairing jig comprising a holding frame having a front-view-shaped shape in which the upper ends of the left and right holding frame bearing portions are respectively connected to the ends of the holding frame flanges, which serve as bearings for the roller shafts.
A shaft body is provided upright in the center of the holding frame collar portion of the holding frame, has a shaft hole into which the shaft body fits at one end, a connection portion with the electrode portion at the other end, and a columnar sheet metal to the side. With a T-shaped connection fitting that protrudes from the pressing part, and with a configuration that allows the connection fitting to rotate with respect to the shaft body, the roller acts as a heat source, and the repaired location can be spread over a wide range at a uniform speed. If it is done, the heat distribution of the sheet metal is less likely to cause unevenness, and the work can be performed without scratching, and the work using the roller, and the work by the columnar sheet metal pressing part at a narrow deformed portion that cannot be worked with the roller, etc. Thus, an excellent sheet metal repair jig that can easily repair deformed parts without replacing the sheet metal repair jig has been realized.

Figure 1 is a perspective view showing a sheet metal repair jig according to an embodiment of the present invention, FIG. 2 is a front view showing a sheet metal repair jig according to the embodiment, FIG. 3 is Osamu sheet metal repair according to the embodiment FIG. 4 is a perspective view showing a state in which a sheet metal repair jig according to the embodiment is attached to a sheet metal repair device.

Sheet metal repair apparatus using a sheet metal repair jig 1 according to an embodiment of the present invention is a portable welder for general steel plate is obtained by a base, as shown in FIG. 4, a sheet metal repair according to the present embodiment A jig 1, a sheet metal repair device main body 2, an earth connection device 4, and a bridge member 3 for pressing and fixing the earth connection device 4 to the sheet metal are provided.

The sheet metal repair device main body 2 includes a cable 21 that is 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, general portable welder for steel sheet, although attaching the electrode tip member (not shown) to the electrode portion 20, a sheet metal repair apparatus according to an embodiment of the present invention, the sheet metal repair jig in place of the electrode tip member 1 is mounted.

  As shown in FIGS. 1 to 3, the sheet metal repairing jig 1 in the sheet metal repairing apparatus includes a roller 10 for applying heat to the sheet metal 6, and a roller shaft 13 that can rotate the roller 10. And a holding frame 12 having a letter-like shape in front view to serve as a bearing for the roller 10 (that is, a configuration 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). . Further, a shaft body 14 is provided upright at the center of the holding frame 12.

  The roller 10 uses an alloy of copper and carbon. Carbon has a relatively high specific resistance, functions as a heat source for applying heat to the sheet metal, and does not weld to the sheet metal. For this reason, although it is suitable as a heat source, since the wear resistance itself is low, it is an alloy using copper as a material capable of improving the wear resistance and suppressing a large current loss. With this configuration, it is possible to secure a heat source, efficiently supply heat, ensure heat conduction characteristics, and ensure durability when used as the roller 10.

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

  The connection fitting 19 has a cylindrical body shape having the shaft hole 17 at one end and a connecting portion 16 with the electrode part 20 at the other end, and further pressing a columnar sheet metal from the longitudinal center position of the cylindrical body to the side. It is a T-shape with a protruding portion 15. And the material of the said sheet metal press part 15 is made into the alloy of copper and carbon as an alloy which has heat resistance similarly to the said roller 10. FIG.

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

  About the sheet-metal repair apparatus and the sheet-metal repair jig | tool 1 provided with the above structure, the usage method and installation structure with respect to aluminum sheet metal are demonstrated below. Note that an aluminum sheet metal cannot be sufficiently grounded by a welding machine ground side connection device for a general steel sheet because it cannot be sufficiently firmly welded. If the material of the sheet metal 6 is made of iron such as a high-tensile steel plate, for example, the ground-side connection device for a welding machine according to Patent Document 2 disclosed in the related art may be used as the energizing means on the ground side. it can. (That is, the ground connection rod of the welding machine ground side connection device is welded to the sheet metal and energized.)

Also, unlike the energizing time of about 0.2 seconds to about 0.5 second and shorter spot welder, sheet metal repair apparatus according to the present invention, since the energizing continuously for a long time a large current, sheet metal repair apparatus In order to provide grounding corresponding to the above, a specially configured ground connection device 4 is required.

  First, the ground connection device 4 which is one of a pair of electrodes necessary for welding is attached to the sheet metal 6. An earth connection device 4 corresponding to the sheet metal repair device according to the present embodiment is shown in FIGS. 5 and 6A and 6B.

  The ground connection device 4 has a central hole penetrating in the longitudinal direction of the central portion of the columnar base body made of a conductive member having the electrode connection portion 45, and a plurality of openings around one end (on the lower surface 46 side) of the central hole. A grounding contact 40 projectingly attached to the other end opening side of the central hole and an insulating sleeve 44, and a temporary welding separation means provided on the head, passing through the compression coil spring 42 and the insulating sleeve 44. And a ground connection rod 43 which is protruded and held against the compression coil spring 42 toward one end opening side of the central hole. The ground contact 40 is a silver contact having a particularly low electric resistance.

  The bridge member 3 is obtained by pressing a steel plate, and includes a side wall 31 formed by bending the left and right sides of the top plate 32 downward and a bottom plate formed by bending the lower end side of the side wall 31 outward. 30. 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. I have.

  The ground connection device 4 is installed by first depositing two stud bolts 5 in the vicinity of the repaired surface made of aluminum using a capacitor discharge type stud welding method, and between the bridge member 3 and the repaired surface. The ground connection device 4 is disposed on the ground. 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. 3 and the surface to be repaired.

Next, a knob 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 is configured such that a knob portion 330 is disposed on the upper surface side of the bottom plate of the bridge member 3 and a stopper 331 for preventing the detachment is exposed on the lower surface side. Even if the stud bolt 5 is not screwed in, the knob nut 33 can be prevented from being lost by preventing the bridge member 3 from being detached. The installation of the above ground connection device 4, a sheet metal repair jig 1 according to the embodiment of the present invention shown below can be used. In addition, since the positioning hole 30B is provided, the predetermined position of the sheet metal can be confirmed from the positioning hole 30B even in the state where the stud bolt 5 is screwed, so that the mounting position of the stud bolt 5 is accurately determined. Can do.

  In the present embodiment, the sheet metal repairing jig includes (1) a pulling-out process until removing a puller or the like (hereinafter referred to as a puller and a stud bolt, which is the same in the present embodiment) as pulling means; ) Used in a repair process in which the strain of the stretched sheet metal remaining after removal of the puller or the like is shrunk by heating and cooling.

(1) In the pulling out process until the puller or the like as the pulling means is removed, the heating operation by the sheet metal repairing jig 1 can be performed before the puller or the like is attached, or the puller or the like is attached and the sheet metal 6 is recessed. A heating operation can be performed in parallel with the withdrawal of the part. Moreover, both heating operation can also be performed collectively.

  By heating the sheet metal using the roller 10 before attaching the puller or the like, the roller 10 can be slid under the condition that there are no obstacles such as the puller and the stud bolt 5, so that the restoration can be performed with higher accuracy. It is possible to improve the work efficiency.

And in the idea which concerns on a present Example, a puller etc. are attached and in parallel to drawing out the recessed part of the sheet metal 6, the connection part of the puller and the sheet metal 6 and its vicinity are pressed and heated. By doing so, the sheet metal 6 becomes soft 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 lowered and rebounded (original Rapid restoration to shape). For this reason, the puller can be removed while maintaining the drawn shape.

(2) In the repairing process, the stretched strain of the sheet metal 6 after the drawing is repaired by pressing and sliding the roller 10 as the heating means against the sheet metal 6 in a wider area including the strained portion. Do.

These factors, by using the sheet metal repair jig 1 in this invention, without even requiring particular skill, can be performed very easily even heating. Further, since the operation is only to slide the roller 10, high safety can be ensured unlike means using a gas flame or the like.

  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. And it restrict | squeezes locally (heat contraction) and finally makes the sheet metal 6 a smooth state by natural cooling.

  The jig 1 for repairing a sheet metal according to the present embodiment is suitable for use in an environment that does not require strict temperature control, and can be made low-cost and lightweight.

Incidentally, sheet metal repair jig 1 in the present invention is not limited to the configuration including the fitting 19 as described in the examples, for example, also be configured without the fitting 19 from the configuration of the above embodiment it can.

  Moreover, in the structure provided with the 2 or more sheet metal press part 15, you may enlarge any diameter of the front end sheet metal press part 15 (15A) and the side sheet metal press part 15 (15B). In this embodiment, the sheet metal pressing portion 15 having a large diameter (large area in contact with the sheet metal 6) is used as the frequently used tip side sheet metal pressing portion 15 (15B), and the side sheet metal pressing portion 15 (15B) is auxiliary. By using the sheet metal pressing portion 15 having a small diameter for the purpose of pressing in detail, the configuration is excellent in convenience.

  Regarding the material of the roller 10 and the sheet metal pressing portion 15, in this embodiment, the carbon content in the alloy is approximately 10% by weight to 50% by weight. When used in this range, the balance between wear resistance and conductivity is extremely excellent, and a suitable heating means can be obtained. When the carbon content in the alloy is less than about 10%, the heat generation performance of the carbon due to current flow becomes insufficient. On the other hand, if the carbon content in the alloy exceeds 50%, the wear resistance is lowered and sufficient performance cannot be exhibited.

Temperature setting of the heating means of the above embodiments of the present invention is directed to generally 80 ° C. to 180 ° C..

  The columnar sheet metal pressing portion 15 can perform not only a pressing operation but also a sliding operation with respect to the sheet metal smoothly like the roller 10 by forming a curved surface by dropping corners of each edge. In addition, by making the shape narrower than that of the roller 10, it is possible to perform heat treatment with the pressing portion 15 on a repaired portion having a narrow width that cannot be processed by the roller 10. .

Moreover, of the jig for sheet metal repair according to the present invention, for those configurations having rollers 10, in the embodiment, the diameter of the roller 19, the diameter dimension of the longitudinal central portion is the most larger structure, This invention is not limited thereto and may also be the same diameter across in the longitudinal direction of the roller 10 (i.e., cylindrical).

Normally, the material of the roller 10 is a single metal such as iron or stainless steel. When a large current is passed, the arc is generated due to local current concentration at the contact surface with the same or other metal plate or high-tensile steel plate. intermittently it occurs, where countless damage extensively arc steel sheet surface (welding mark) is generated, according to the configuration of the present invention, without generating an arc by using a carbon, further in combination metal As a result, durability was improved in a range where virtually no arc was generated, and uniform and sufficient heating was possible only by sliding and pressing against the sheet metal without requiring skill.

Thus, examples of what functions of the present invention as an alloy with carbon, copper, aluminum, brass (brass), iron, stainless steel, tungsten, titanium, carbon steel, lead and the like, the present invention is It is not limited to combinations with these alloys.

Further, as the fixing means of the bridge portion, is used a knob nut, the present invention is not limited to the above configuration, it may be a fixing means of ordinary nuts.

  Each “cooling” in the drawing process and the repairing process is not limited to natural cooling, but includes performing by placing a cloth wetted with water on a sheet metal instead of natural cooling. Moreover, it is the meaning including using together natural cooling and cooling by the cloth coated with water.

Circuit arrangement further disclosed in the examples of the present invention are those only an example, procedures and information processing of the detected temperature, configuration of the hardware means including control means particularly limited Instead, various known circuit configurations, information processing, configurations of hardware means, and the like can be used.

DESCRIPTION OF SYMBOLS 1 Sheet metal repair jig | tool 10 Roller 115 Power supply 116 Breaker 117 Transformer 118 Hand operation switch 119 Signal line 12 Holding frame 12A Holding frame bearing part 12B Holding frame collar part 13 Roller shaft 14 Shaft body 16 Connection part 17 Shaft hole 19 Connection metal fitting DESCRIPTION OF SYMBOLS 2 Sheet metal restoration apparatus main body 20 Electrode part 21 Cable 22 Grip part 23 Switch 3 Bridge member 30 Bottom plate 30A Mounting hole 30B Positioning hole 31 Side plate 32 Top plate 32A Relief hole 33 Knob nut 330 Knob part 331 Stopper 4 Ground connection device 40 Ground contact point 41 T-shaped connecting member 42 Compression coil spring 43 Ground connection rod 44 Insulation sleeve 45 Electrode connection portion 46 Lower surface 5 Stud bolt 6 Sheet metal 7 Sheet metal repair device

Claims (2)

A jig for sheet metal restoration equipped with a heating means made of an alloy of carbon and metal, which is mounted and used on an electrode part in a sheet metal restoration apparatus, a roller which is the heating means, a roller shaft which can rotate the roller, In a sheet metal repairing jig comprising a holding frame having a front-view-shaped shape in which the upper ends of the left and right holding frame bearing portions are respectively connected to the ends of the holding frame flanges, which serve as bearings for the roller shafts.
A sheet metal repairing jig characterized in that a shaft body is provided upright in the center of a holding frame collar portion of a holding frame, and a roller rotates with the shaft body as a rotation shaft. A connection fitting is provided between the electrode portion and the roller, and a shaft hole is provided at one end of the connection fitting, the sheet metal pressing portion is provided on a side, and provided on a holding frame that holds the roller with respect to the shaft hole. 2. The sheet metal repair jig according to claim 1, wherein the shaft member is fitted, and the connection fitting and the roller are rotated about the shaft body as a rotation axis.

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