JP4551587B2 - Sheet metal drawing device and drawing aid used therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a sheet metal drawing device and a drawing aid used therefor.IngredientsRelated.
  More specifically, the drawer for sheet metal can prevent the recessed portion from being excessively pulled out, and can efficiently pull out the recessed portion by selectively combining a drawer fitting tool suitable for the construction location with a drawing aid. Equipment and drawer assistance used for itIngredientsRelated.
  In addition, when the recess is wide (large), it is possible to repair the recess by using the drawer tool alone. When the recess is narrow (small), the drawer tool is attached to the drawer. Drawer for sheet metal, which can repair the recess while adjusting the force required to pull out the recess by the drawer assisting tool, and the drawer assist used for itIngredientsRelated.
[0002]
[Prior art]
  Conventionally, in order to restore a car body (painted surface) recessed due to an accident or the like reasonably quickly, a drawing tool for pulling out the recess from the outside has been used. At present, in such an extraction tool, a welding tip for welding electrodes (also referred to as a fused tip) provided at the tip of the rod or a hook provided at the tip of the rod is used.
[0003]
  In the drawing tool provided with the welding tip, after the welding tip is welded to the concave portion of the body, the drawing tool is manually pulled in a direction to eliminate the concave portion, and the concave portion is repaired. Moreover, in the drawing tool provided with the hook, after hooking the hook directly or indirectly on the washer or the perforated pin welded to the sheet metal surface, the pulling tool is manually pulled in the same manner to repair the concave portion. .
[0004]
[Problems to be solved by the invention]
  In the conventional drawer, it can be used very suitably for the roughing work which draws out a comparatively wide (large) recessed part at once. However, since the pulling tool is simply pulled by hand to pull out the recess, it is difficult to adjust the force applied when pulling out. For this reason, when it is necessary to draw out more detail after the roughing operation, or when repairing a narrow (small) concave portion, there is a problem that the concave surface protrudes due to excessive pulling.
[0005]
  Also, depending on the area and depth of the recess made in the sheet metal surface, the drawer tool with a welding tip may be easier to work with, and conversely, the drawer tool with a hook may be easier to work with. is there. For example, when the area of the concave portion is slightly large, it is possible to perform an effective repair work by welding a large number of washers to the sheet metal surface and pulling up the connecting rod inserted into the washer using a pull-out tool equipped with a hook. .
[0006]
  Therefore, the present inventor has been working on the development of a sheet metal drawing device that can prevent excessive drawing of the recessed surface and can efficiently draw out the recessed portion by combining with a drawing tool suitable for the construction location. The present invention has been completed.
[0007]
(Object of invention)
  It is an object of the present invention to prevent an excessive withdrawal of a recessed surface, and a sheet metal that can efficiently draw out a recessed portion by selectively combining a drawing tool suitable for a construction location with a drawing aid. Drawer device and drawer assistance used for itIngredientsIt is to provide.
  Another object of the present invention is to repair the recess by using the drawer alone when the recess is wide (large), and to the drawer when the recess is narrow (small). The sheet metal drawer device that can repair the recess while adjusting the force required to pull out the recess by the drawer with the drawer auxiliary tool, and the drawer assist used for itIngredientsIt is to provide.
[0008]
[Means for Solving the Problems]
In the first invention,
  A sheet metal drawing device for pulling out a sheet metal surface,
  Has a shaft or rodDrawing tool and the drawing toolArrive atIncludes a combination with a pull-out aid that can be removably attached,
  in frontThe withdrawal aid is
  An auxiliary tool main body having a grip, a hollow portion, and a through-hole on the rear side communicating with the hollow portion;
  A mounting portion that is inserted into the through-hole on the rear side and is provided so as to be able to advance and retreat with respect to the auxiliary tool main body, and detachably holds a shaft or a rod of the drawing tool to be fitted;
  It is pivotally supported in the hollow portion so that the shaft or rod of the drawing tool passes through, and abuts on the mounting portion in the hollow portion and moves in the same direction as the advancing / retreating direction of the mounting portion. An operating lever;
  Means for urging the mounting portion in a direction to advance,
  Legs provided on the front side of the auxiliary tool body;
With
  The mounting part is
  A cylindrical mounting portion main body, and a cylindrical adjustment portion that is exposed on the rear side of the auxiliary tool main body and is screwed into the mounting portion main body to adjust the length of the entire mounting portion;
  The drawer assisting tool is attached to the drawer by inserting the shaft or rod of the drawer into the mounting part and passing it through.
  This is a sheet metal drawing device.
[0009]
  In the second invention,
  Two or more types of drawers that pull out the sheet metal surfaceAnd theTwo or more kinds of drawers differ in at least the function or structure of the attachment part provided at the tip of the shaft or rod, and are selectively combined with the drawer aid.The
  1 is a drawing apparatus for sheet metal according to a first invention;
[0010]
  In the third invention,
  Two or more kinds of drawers include those with welding tips and those with hooks.
  It is the drawing apparatus for sheet metal which concerns on 2nd invention.
[0011]
  In the fourth invention,
  With a shaft or rod,For pulling out the sheet metal surfaceWithdrawal aid that pulls out the sheet metal surface in cooperation with the drawerBecause
  An auxiliary tool main body having a grip, a hollow portion, and a through-hole on the rear side communicating with the hollow portion;
  A mounting portion that is inserted into the through-hole on the rear side and is provided so as to be able to advance and retreat with respect to the auxiliary tool main body, and detachably holds a shaft or a rod of the drawing tool to be fitted;
  It is pivotally supported in the hollow portion so that the shaft or rod of the drawing tool passes through, and abuts on the mounting portion in the hollow portion and moves in the same direction as the advancing / retreating direction of the mounting portion. An operating lever;
  Means for urging the mounting portion in a direction to advance,
  Legs provided on the front side of the auxiliary tool body;
With
  The mounting part is
  A cylindrical mounting portion main body, and a cylindrical adjustment portion that is exposed on the rear side of the auxiliary tool main body and is screwed into the mounting portion main body to adjust the length of the entire mounting portion;
  It is attached to the drawer by fitting the shaft or rod of the drawer to the mounting part and passing it through.
  Withdrawal aidIt is.
[0012]
(Delete)
[0013]
(Delete)
[0014]
(Delete)
[0015]
(Delete)
[0016]
(Delete)
[0017]
  In this specification, the term “welding” is used to include expressions such as “welding” and “welding”.
[0018]
  The sheet metal drawing device and the drawing aid used for the same according to the present invention can be suitably used for repairing recesses on various sheet metal surfaces of, for example, automobiles and vending machines.
[0019]
  As a form of the leg portion, for example, one having a plurality of legs in contact with the ground contact surface, a circular shape or a square shape, or other polygonal shape or irregular shape (irregular shape) ground portion (annular shape having various shapes) (Including the body) provided at the tip of the leg, or a plate-shaped grounding portion having a hole through which the welding tip and the hooking part can advance and retract, etc. In particular, it is not limited to these.
[0020]
  As a means for urging the mounting portion in the advancing direction, for example, a tension coil spring, a compression coil spring, a torsion coil spring, a disc spring, a bamboo shoot spring, a spiral spring, a plate spring, or other means using the spring force of a spring, or rubber A means using the elastic force of natural rubber (including natural rubber and synthetic rubber) can be mentioned, but it is not particularly limited thereto.
[0021]
(Work)
  The sheet metal drawing device and the drawing aid according to the present invention operate as follows.
  For example, when performing a roughing operation or the like for pulling out a relatively wide (large) concave surface at a time, a drawer is used alone. Select a drawer that is suitable for the construction location (depth and area of the recesses on the sheet metal surface). An example of an extraction tool provided with a welding tip will be described as an extraction tool.
  First, the drawing tool is pressed against the concave portion of the sheet metal surface, and the concave portion is pressed with a welding tip. In this state, the tip of the welding tip is welded to the recess.
  Next, the drawer tool is directly pulled by hand, and the concave portion of the sheet metal surface is slowly drawn to the state before the original concave portion. After confirming that the sheet metal surface has become flat, the welding between the tip of the welding tip and the sheet metal surface is released.
[0022]
  On the other hand, when further details need to be pulled out after the roughing operation, or when repairing a narrow (small) recess, a drawer assisting tool is attached to the drawer and a sheet metal drawer is configured and used. Since the drawing aid can be detachably attached to any of two or more kinds of drawing tools that have at least attachment parts with different functions or structures, the drawing tool suitable for the construction site can be selectively used as a drawing aid. Combine with.
  First, the tip of the welding tip of the drawer is welded to the recess in a state in which the leg of the drawer assisting tool is pressed against both sides of the recess (not recessed).
  Next, by means that can adjust the force required for pulling out the recess by the pulling tool, the pulling tool is pulled to the outside of the pulling auxiliary tool, and the recess is slowly pulled out to the state before the original recess. After confirming that the sheet metal surface has become flat, the welding between the tip of the welding tip and the sheet metal surface is released.
[0023]
  Moreover, when using the drawer tool provided with other attachment parts, such as a hook part, remove a drawer | drawing-out assistance tool from the drawer tool provided with the welding tip, and mount | wear a drawer assistance tool with the selected other drawer tool. If you use a drawer with a hook, weld a weld washer or hole pin to the recess on the sheet metal surface, and hook the hook directly or indirectly on the weld washer or hole pin. Pull out.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
  The present invention will be described in more detail based on embodiments shown in the drawings.
[Embodiment 1]
  FIG. 1 shows a first embodiment of a sheet metal drawing device according to the present invention, and is a perspective explanatory view showing a state where the sheet metal drawing device is separated into a drawing tool and a drawing auxiliary tool,
  FIG. 2 is a longitudinal cross-sectional view showing a state in which a drawer assisting tool is attached to the drawer and the recess is being pulled out;
  FIG. 3 is an enlarged view of a portion including the shaft mounting portion of the drawer assisting tool.
[0025]
  As shown in FIG. 1, the sheet metal drawing device 1 includes a drawing tool 2 and a drawing auxiliary tool 3 that can be detachably attached to the drawing tool 2.
[0026]
  First, the drawer 2 will be described.
  The drawing tool 2 has a tip holder 22 at the tip of the grip 21. A shaft 24 is fastened and fixed to the tip side of the chip holder 22 by a nut 25. The tip of the shaft 24 is provided with a welding tip 23 that is an attachment portion.
The contact tip 23 is pointed. Reference numeral 26 denotes a washer.
[0027]
  The welding tip 23 is fastened and fixed to the tip of the shaft 24 by a nut 27. Then, by releasing the fixation by the nut 27, it can be replaced with a new chip. Further, a recess 241 is provided in the peripheral surface portion at the tip of the shaft 24 so that the shaft 24 can be easily fixed with a spanner or the like when the nut 27 is removed. A flange portion 242 is provided at the base end portion of the shaft 24 so that a shaft mounting portion 35 of the drawer assisting tool 3 described later comes into contact therewith.
[0028]
  The length of the entire shaft 24 including the welding tip 23 is such that the tip of the welding tip 23 is more distal than the contact surface portion 343 of the drawing assistant 3 described later when the drawer auxiliary tool 3 is attached to the drawer 2. It is pre-designed to protrude.
[0029]
  The welding tip 23 is generally made of copper plated with iron in order to prevent rust, but is not particularly limited thereto.
[0030]
  The grip 21 is provided with an operation switch 211 (not visible in FIG. 1, see FIG. 2). One end of a cord 212 is attached to the proximal end portion of the grip 21, and the other end of the cord 212 is connected to a stud welder or a spot welder (both not shown).
[0031]
  In FIG. 2, on the upper side of the chip holder 22, a copper squeezing chip 28 is provided for use in the squeezing operation of the convex portion made of a sheet metal surface. The squeezing tip 28 is larger in diameter than the welding tip 23 described above and has a rounded tip. The aperture tip 28 is fastened and fixed to the tip holder 22 by a butterfly bolt 29. As a result, the drawing tip 28 can be replaced with a new tip, or a tip for washer welding, which is a well-known technique, can be replaced.
[0032]
  Next, the drawing assistance tool 3 will be described.
  The drawing assisting tool 3 has a substantially L-shaped assisting tool main body 31 formed so that the upper side is slightly raised in FIG. The auxiliary tool body 31 is a grip of the drawer auxiliary tool 330It also has a function as
[0033]
  The auxiliary tool body 31 has an opening 311 below in FIG. 2 and is hollow. The operation lever 32 is pivotally supported in the auxiliary tool body 31 by the shaft 312. On the upper side of the operation lever 32, a rounded convex portion 320 that abuts on a shaft mounting portion 35 described later is provided. In addition, a through hole 321 into which the shaft 24 of the drawer 2 can be inserted when the drawer assisting tool 3 is attached to the drawer 2 is provided on the upper side of the operation lever 32. Furthermore, a through-hole 313 into which the shaft 24 of the drawing tool 2 can be similarly inserted is provided at the distal end portion of the auxiliary tool body 31.
[0034]
  As shown in FIG. 1, a pair of leg portions 34 is fastened and fixed to the front side of the auxiliary tool body 31 by fixing bolts 33 and nuts (not visible in the drawing). The leg parts 34 and 34 have leg main bodies 341 and 341 that are formed so as to be slightly tapered toward the tip. The contact surface portions 343 and 343 are rotatably supported by the shaft portions 342 and 342 at the distal ends of the leg main bodies 341 and 341, respectively. Reference numeral 344 indicates a semicircular bearing. Buffers 345 and 345 made of an elastic body such as a rubber plate are provided on the grounding side of the contact surfaces 343 and 343 so as not to damage the sheet metal surface to be repaired.
[0035]
  A through hole 314 is provided on the rear side (right side in FIG. 3) of the auxiliary tool body 31. The through hole 314 is provided with a shaft mounting portion 35 for inserting the shaft 24 of the drawer 2 in a detachable (detachable) manner. The shaft mounting portion 35 is movable back and forth (movable back and forth) with respect to the auxiliary tool body 31.
[0036]
  As shown in FIG. 3, the shaft mounting portion 35 has one end (the hollow portion of the auxiliary tool body 31).310A cylindrical mounting portion main body 352 having a flange 351 on the side) and a cylindrical adjustment portion 354 having a flange 353 at the other end of the mounting portion main body 352 and screwed from the outside of the auxiliary tool main body 31. Have. In addition, a coil spring 36 that is a means for urging the mounting portion main body 352 in a direction in which the shaft mounting portion 35 is advanced is fitted. Specifically, one end side of the coil spring 36 is locked by the flange 351 of the mounting portion main body 352, and the other end side of the coil spring 36 is fitted in a groove portion 315 formed inside the auxiliary tool main body 31.
[0037]
  The length of the entire shaft mounting portion 35 can be adjusted by adjusting the progress (depth) of the screwing of the adjusting portion 354 with respect to the mounting portion main body 352.
Thereby, when the drawer | drawing-out assisting tool 3 is mounted | worn with the drawer | drawing-out tool 2, the insertion adjustment of the drawer | drawing-out tool 2 (shaft 24) with respect to the drawer | drawing-out auxiliary tool 3 can be adjusted. That is, the length of the welding tip 23 protruding from the contact surface portion 343 can be adjusted according to the depth of the concave portion of the sheet metal surface.
[0038]
  In the present embodiment, the length of the shaft mounting portion 35 is adjusted by screwing the mounting portion main body 352 and the adjusting portion 354. However, the present invention is not particularly limited to this, and for example, biasing in the protruding direction is performed. The locking projections are provided on the outer peripheral portion of the adjustment portion 354, and the locking projections are locked in the required number of locking holes formed at equal intervals in the length direction of the mounting portion main body 35, so that the shaft mounting portion 35 The length may be adjusted stepwise.
[0039]
  With the configuration as described above, when the operation lever 32 is pulled in the direction of arrow A in FIG. 2 with the drawer assisting tool 3 mounted on the drawer 2, the shaft mounting portion 35 is pushed in the retracting direction, 2 is pulled to the outside (in the direction of arrow B) of the auxiliary tool body 31. As a result, the welding tip 23 protruding from the contact surface portion 343 is retracted.
  When the pulling force of the operating lever 32 is weakened, the operating lever 32 returns to the original position by the restoring force of the compressed coil spring 36, and the welding tip 23 also protrudes in the traveling direction (to the distal end side of the drawing aid 3). .
[0040]
(Work)
  FIG. 4 is an explanatory view showing a state in which the pulling tool is used alone, and the recess is pulled out (pulling).
  FIG. 5 is an explanatory view showing a state in which the recessed portion is being pulled out while the slide tool is attached to the drawer.
  FIG. 6 is an explanatory view showing a state in which the drawing tool is used alone to perform the drawing operation of the protruding portion.
  With reference to drawings, the usage method of the drawing tool 2 and the drawing assistance tool 3 is demonstrated.
[0041]
(1) When using the drawer 2 alone
  The use of the drawing tool 2 alone is particularly suitable for a roughing operation in which a relatively wide (large) concave surface is drawn at a time. However, it is not limited to this method of use, and it goes without saying that it can also be used for drawing out narrow (small) recesses.
[0042]
  Please refer to FIG.
  First, the drawing tool 2 is pressed against the recess 4 on the sheet metal surface, and the recess 4 is pressed with the welding tip 23. In this state, the operation switch 211 of the grip 21 is pressed to operate a stud welding machine or a spot welding machine (both not shown), and the welding tip 23 and a ground terminal (not shown) fixed to a required location on the sheet metal surface. Current flows between them. Thereby, the front-end | tip part of the welding tip 23 is welded to the recessed part 4. FIG.
[0043]
  Next, the drawing tool 2 is directly pulled by hand, and the concave portion 4 of the sheet metal surface is slowly drawn to the original state before being depressed. After confirming that the sheet metal surface has become flat, the drawing tool 2 is twisted (rotated) to release the welding between the tip of the welding tip 23 and the sheet metal surface.
[0044]
  Further, as shown in FIG. 5, by attaching the slide hammer 5 to the shaft 24, the slide hammer 5 is moved after the welding tip 23 is welded to the recess 4, and the impact force of the slide hammer 5 is used to make the recess 4 can be pulled out (or a convex portion formed on the sheet metal surface can be hit using an impact force). Since the repair method using the slide hammer 5 is a well-known technique, a detailed description of the slide hammer 5 is omitted.
[0045]
  Further, as shown in FIG. 6, when the sheet metal surface is distorted and the convex portion 6 is formed, the repair work is performed with the narrowing tip 28 protruding from one end portion of the tip holder 22.
That is, when the convex portion 6 is pressed by the squeezing tip 28 and the operation switch 211 of the grip 21 of the drawer 2 is pressed in this state, a current flows through the squeezing tip 28 and the convex portion which is a distorted portion. Modification 6 is performed. In addition, since the repair method of the convex part 6 using this narrowing chip | tip 28 is a known technique, detailed description is abbreviate | omitted.
[0046]
(2) When using the drawer aid 3 attached to the drawer 2
  First, as shown in FIG. 1, the shaft mounting portion 35 of the drawing auxiliary tool 3 is fitted into the shaft 24 of the drawing tool 2, and the drawing auxiliary tool 3 is mounted on the drawing tool 2 to constitute the sheet metal drawing device 1.
  The use as the sheet metal drawing device 1 is suitable, for example, when it is necessary to draw more details after the roughing operation as shown in FIG. 2 or when repairing a narrow (small) concave portion.
[0047]
  First, as shown in FIG. 2, the leg portion 34 of the drawer assisting tool 3 is pressed against both sides of the concave portion 7 (portions that are not concave). Next, the adjustment portion 354 of the shaft mounting portion 35 is rotated so that the tip of the welding tip 23 protrudes from the contact surface portion 343 until reaching the depth of the concave portion 7 that needs to be pulled out. And the recessed part 7 is pressed with the welding tip 23, the operation switch 211 of the drawing tool 2 is pushed in the state, and the front-end | tip part of the welding tip 23 is welded to the recessed part 7. FIG.
[0048]
  Next, the operating lever 32 is pulled against the coil spring 36, and the concave portion 7 is slowly pulled out to the state before the original concave portion. After confirming that the sheet metal surface has become flat, the drawing tool 2 is twisted (rotated) to release the welding between the tip of the welding tip 23 and the sheet metal surface.
[0049]
[Embodiment 2]
  FIG. 7 shows a second embodiment of the sheet metal drawing device according to the present invention, and is a perspective explanatory view showing a state in which the sheet metal drawing device is separated into a drawing tool and a drawing auxiliary tool,
  FIG. 8 is a longitudinal cross-sectional view showing a state in which a drawer assisting tool is attached to the drawer and the recess is being pulled out;
  FIG. 9 is a partial cross-sectional explanatory view showing a state in which the concave surface shown in FIG.
  FIG. 10 is a perspective explanatory view when a hook of another form is attached to the shaft of the drawer.
It is.
  In addition, the same or equivalent parts as those in the first embodiment are denoted by the same reference numerals, description of the parts shown in the first embodiment is omitted, and differences are mainly described. .
[0050]
  In the sheet metal drawing device 1 </ b> A, unlike the drawing tool 2 described in the first embodiment (see FIG. 1), a hook 82 that is a hooking part (attachment part) is attached to the tip of the shaft 81 of the drawing tool 8. Is detachably provided. Then, as shown in FIGS. 8 and 9, the hooks 82 are hooked directly or indirectly on the welding washers 9 or the perforated pins welded to the concave portions 7 on the sheet metal surface, and the concave portions 7 are pulled out.
[0051]
  The drawer 8 will be described in further detail.
  The drawing tool 8 includes a grip portion 83 having a base end formed in a ring shape. The grip portion 83 is also called an eyenut, and the base end portion of the shaft 81 is screwed and fixed to a bolt hole 831 (not visible in FIGS. 8 and 9, see FIG. 7) provided through the grip portion main body 830. Has been. A screw hole (not hidden in the drawing) for fixing a fixing bolt 822 of a hook 82 described later is provided at the tip of the shaft 81.
  When the drawer assisting tool 3 is mounted on the drawer 8, the shaft mounting part 35 of the drawer assisting tool 3 is in contact with the shaft 81 side of the gripping part main body 830.
[0052]
  The hook 82 includes iron flange portions 821 and 821 arranged in parallel at a required interval on the front side, and a fixing bolt 822 for fixing to the shaft 81 on the base side. Reference numeral 823 denotes a washer used when the hook 82 is fixed to the shaft 81. And when attaching and using the drawer | drawing-out assistance tool 3 to the drawer | drawing-out tool 8, in the state which removed the hook 82 from the shaft 81, the shaft 81 is attached to the shaft mounting part 35 of the drawer | drawing-out assistance tool 3, as shown in FIG. After fitting, the hook 82 is attached to the tip of the shaft 81.
[0053]
  Further, since the hook 82 is detachable from the shaft 81, other shape hooks (for example, a hook 84 provided with a flange 841 bent substantially at right angles as shown in FIG. The apparatus 1B can be replaced with a configuration). A recess 811 is provided in the peripheral surface portion at the tip of the shaft 81 so that the shaft 81 can be easily fixed with a spanner or the like when the hook 82 is removed.
[0054]
  The length of the entire shaft 81 including the hook 82 is the same as that of the first embodiment in that the tip of the hook 82 is more than the contact surface portion 343 of the drawer assisting tool 3 when the drawer assisting tool 3 is attached to the drawer 8. Is also designed in advance so as to protrude to the tip side.
[0055]
  The shape of the hook 82 is not particularly limited to the above. For example, the hook 82 can be constituted by three or three or more hook parts 821, or the hook parts 821 can be provided at an arbitrary position without being arranged in parallel.
[0056]
(Work)
  With reference to FIG. 7 thru | or FIG. 9, the usage method of the drawing tool 8 and the drawing assistance tool 3 is demonstrated. Note that the description of the same operations as those described in the first embodiment is omitted.
[0057]
(1) When using the drawer assistance tool 3 attached to the drawer 8
  First, as shown in FIG. 7, the drawer | drawing-out assistance tool 3 is mounted | worn with the drawer | drawing-out tool 8, and 1 A of sheet-metal drawing apparatuses are comprised.
  Next, as shown in FIGS. 8 and 9, a welding washer 9, a perforated pin, or the like is welded to the concave portion 7 of the sheet metal surface. In the present embodiment, three welding washers 9 having a required size matching the depth and area of the concave portion 7 on the sheet metal surface are aligned and welded in the same direction. For example, a metal connecting rod 10 for hooking the hook 82 of the drawing tool 8 is inserted into the hole of each welding washer 9. The connecting rod 10 to be inserted may be, for example, a driver's round shaft (shank), and is not particularly limited. Moreover, the magnitude | size and shape of a welding washer and a perforated pin welded to a sheet metal surface are not specifically limited, A well-known thing is employable.
[0058]
  Then, the leg part 34 of the drawer | drawing-out assistance tool 3 is pressed on the both sides (part which is not dented) of the recessed part 7. FIG. Then, the adjusting portion 354 of the shaft mounting portion 35 is rotated, and the hook 82 is protruded from the contact surface portion 343 until the depth of the concave portion 7 that needs to be pulled out is reached. The connecting rod 10 inserted into each welding washer 9 is hooked by the hook 82.
[0059]
  The operating lever 32 is pulled against the coil spring 36, and the concave portion 7 is slowly pulled out to the state before the original concave portion. After confirming that the sheet metal surface has become flat, the hook 82 is removed from the connecting rod 10, and each welding washer 9 is removed from the sheet metal surface.
[0060]
  In the present embodiment, the hook 82 is hooked on the connecting rod 10 to pull the concave portion 7. However, the hook 82 is directly hooked and pulled on the hole portion of the welding washer or the perforated pin welded to the concave portion 7. Anyway.
[0061]
(2) When using the drawer 8 alone
  Although not shown, the hook 82 is hooked on a welding washer or a perforated pin welded to the sheet metal surface or a connecting rod attached thereto, and the gripping portion 83 of the drawing tool 8 is gripped and directly pulled by hand.Stretch. As shown in FIG. 5, the slide hammer 5 is attached to the shaft 81, and the concave portion 7 is pulled out using the impact force of the slide hammer 5 (or the convex portion formed on the sheet metal surface is hit using the impact force). You can also
[0062]
  As described above, the drawing tools 2 and 8 suitable for the construction location (depth and area of the recess formed on the sheet metal surface) are selected, and the selected drawing tools 2 and 8 are used in combination with the drawing aid 3. Therefore, the recessed part can be pulled out efficiently. Moreover, if the drawer | drawing-out auxiliary tool 3 is mounted | worn with the existing drawer tools 2 and 8 used until now, the existing drawer tools 2 and 8 can be used as it is, and in order to introduce the sheet metal drawer device 3 The cost can be kept low.
[0063]
  Note that the terms and expressions used in this specification are merely explanatory and are not restrictive, and do not exclude terms and expressions equivalent to the above terms and expressions. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the technical idea.
[0064]
【The invention's effect】
  The present invention has the above-described configuration and has the following effects.
(A) According to the present invention, by using the drawer assisting tool attached to the drawer that pulls out the sheet metal surface, the concave part is repaired while adjusting the force required to pull out the recess by the drawer with the drawer assisting tool. Can do. Therefore, excessive withdrawal of the recessed surface can be prevented.
[0065]
(B) Also, since the drawing aid can be detachably attached to any of two or more kinds of drawing tools, it is efficiently recessed by selectively combining the drawing tool suitable for the construction location with the drawing aid. The part can be pulled out.
[0066]
(C) Furthermore, if a drawer assisting tool is attached to an existing drawer that has been used up to now, the existing drawer can be used as it is, and the cost for introducing the sheet metal drawer is also low. Can be suppressed.
[0067]
(D) Still further, when the recess is wide (large), the pull-out tool can be used alone to repair the recess, and when the recess is narrow (small), the pull-out aid is attached to the drawer. The concave portion can be repaired while adjusting the force required to pull out the concave portion by the drawing tool with the drawing auxiliary tool.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of a sheet metal drawing device according to the present invention, and is an explanatory view showing a state in which the sheet metal drawing device is separated into a drawing tool and a drawing auxiliary tool.
FIG. 2 is a longitudinal cross-sectional view showing a state where a drawer assisting tool is attached to the drawer and a recess is being pulled out.
FIG. 3 is an enlarged explanatory view of a portion including a shaft mounting portion of a drawing assist tool.
FIG. 4 is an explanatory view showing a state where a pulling tool is used alone to perform a pulling out operation (pulling work) of a recess.
FIG. 5 is an explanatory diagram showing a state in which a recess is being pulled out with a slide hammer attached to a drawer.
FIG. 6 is an explanatory view showing a state in which the drawing tool is used alone to perform the drawing work of the protruding portion.
FIG. 7 is an explanatory perspective view showing a second embodiment of the sheet metal drawing device according to the present invention and showing a state in which the sheet metal drawing device is separated into a drawing tool and a drawing auxiliary tool.
FIG. 8 is a longitudinal cross-sectional view showing a state in which a drawer assisting tool is attached to the drawer and a recess is being pulled out.
FIG. 9 is a partial cross-sectional explanatory view showing a state in which the concave surface shown in FIG. 8 is enlarged from above.
FIG. 10 is a perspective explanatory view when another type of hook is attached to the shaft of the drawing tool.
[Explanation of symbols]
1 Sheet metal drawing device
2 drawer
21 grip
211 Operation switch
212 code
22 Tip holder
23 Welding tips
24 shaft
241 dent
242 Flange
25 nuts
26 Washer
27 nuts
28 Throttle tip
29 Butterfly Bolt
3 withdrawal aids
31 Auxiliary body
311 opening
312 Shaft
313 Through hole
314 Through hole
315 Groove
32 Control lever
320 Convex
321 Through hole
33 Fixing bolt
34 legs
341 Leg body
342 Shaft
343 Contact part
344 Bearing part
345 buffer
35 Shaft mounting part
351 flange
352 mounting body
353 flange
354 Adjustment unit
36 Coil spring
4 recess
5 Slide hammer
6 Convex
7 recess
8 drawer
81 shaft
811 dent
82 hook
821 Buttocks
822 fixing bolt
823 Washer
83 Gripping part
830 Grip body
831 bolt hole
84 hook
841 Buttocks
9 Welding washer

Claims (4)

A sheet metal drawing device for pulling out a sheet metal surface,
Wherein the shaft (24,81) or extraction tool comprises a rod and (2,8), a combination of the cited Daegu (2,8) to the destination detachably mounting can lead aid (3),
Before Symbol pull-out aid (3),
An auxiliary tool body (31) having a grip (30), a hollow portion (310), and a through hole (314) on the rear side communicating with the hollow portion (310),
The shaft (24, 81) or rod of the drawing tool (2, 8) inserted into the through hole (314) on the rear side and provided so as to be able to advance and retreat with respect to the auxiliary tool body (31). A mounting part (35) for detachably holding,
It is pivotally supported in the hollow part (310), the shaft (24, 81) or rod of the drawing tool (2, 8) passes through, and the hollow part (310) An operation lever (32) that contacts the mounting portion (35) and moves in the same direction as the mounting portion (35);
Means (36) for urging the mounting portion (35) in the advancing direction;
Legs (34) provided on the front side of the auxiliary tool body (31);
With
The mounting portion (35)
A cylindrical mounting part main body (352) and the rear side of the auxiliary tool main body (31) are exposed and screwed into the mounting part main body (352) to adjust the entire length of the mounting part (35). It has a cylindrical adjustment part (354),
The drawing aid (3) is attached to the drawing tool (2, 8) by inserting the shaft (24, 81) or rod of the drawing tool into the fitting portion (35) and passing it through.
Sheet metal drawing device. It has two or more kinds of drawers (2) for pulling out the sheet metal surface , and the two or more kinds of drawers (2) are at least functions of a shaft (24, 81) or a mounting part provided at the tip of the rod. structure is different in, Ru are selectively combined against withdrawal aid (3),
The sheet metal drawing device according to claim 1 . Two or more kinds of drawers include those with welding tips and those with hooks.
The sheet metal drawing device according to claim 2. A drawing auxiliary tool (3) comprising a shaft (24, 81) or a rod and pulling out a sheet metal surface in cooperation with a drawing tool (2, 8) for pulling out the sheet metal surface ,
An auxiliary tool body (31) having a grip (30), a hollow portion (310), and a through hole (314) on the rear side communicating with the hollow portion (310),
The shaft (24, 81) or rod of the drawing tool (2, 8) inserted into the through hole (314) on the rear side and provided so as to be able to advance and retreat with respect to the auxiliary tool body (31). A mounting part (35) for detachably holding,
It is pivotally supported in the hollow part (310), the shaft (24, 81) or rod of the drawing tool (2, 8) passes through, and the hollow part (310) An operating lever (32) that contacts the mounting part (35) and moves in the same direction as the mounting part (35);
Means for urging the mounting portion (35) in a traveling direction;
Legs (34) provided on the front side of the auxiliary tool body (31);
With
The mounting portion (35)
A cylindrical mounting part main body (352) and the rear side of the auxiliary tool main body (31) are exposed and screwed into the mounting part main body (352) to adjust the entire length of the mounting part (35). It has a cylindrical adjustment part (354),
The extraction tool (2, 8) is mounted by inserting the shaft (24, 81) or rod of the extraction tool into the mounting portion (35) and passing it through.
Drawer aid.

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