JP3927817B2 - Welding aids - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a welding aid, and more particularly to a welding aid suitable for use in welding a plate-like or block-like second steel material on a plate-like or block-like first steel material.
[0002]
[Prior art]
In the case of welding the plate-like or block-like second steel material on the plate-like or block-like first steel material, the second steel material is a predetermined material on the first steel material during the welding operation. It is necessary to support it so that it does not move at the welding position. Conventionally, an operator other than the welding operator is holding it by hand, and the second steel material is temporarily fixed to the first steel material using a bolt and a nut.
[0003]
[Problems to be solved by the invention]
However, there is a problem that a worker other than the welding worker is manually pressed. Temporary fixing with bolts and nuts takes extra time to make a temporary fixing hole, or the temporary fixing hole due to problems such as the shape and arrangement of the first steel material and the second steel material. There is a case where it is difficult to open the door, and there is a problem that positioning accuracy is deteriorated by tying it with a string without stopping.
An object of the present invention is to provide a welding auxiliary tool that can be welded with high accuracy without requiring manual processing and without special processing on a welding target.
[0004]
[Means for Solving the Problems]
According to the welding auxiliary tool of the present invention, in the welding auxiliary tool for welding the plate-shaped or block-shaped second steel material onto the plate-shaped or block-shaped first steel material, the second steel material is used. A magnet part that is magnetically detachably attached, a moving mechanism part that moves the magnet part in the front-rear direction and the left-right direction, and a clamp part that is attached to the first steel material while being attached to the moving mechanism part. It is characterized by having prepared.
The first steel material is sandwiched by the clamp part, and the second steel material is magnetically attached by the magnet part. And a magnet part is moved to the front-back direction and the left-right direction with a moving mechanism part, and a 2nd steel material is positioned in a predetermined welding position. As a result, the second steel material is positioned at a predetermined position with respect to the first steel material, even if an operator other than the welding worker does not hold the second steel material or temporarily fix it with bolts and nuts. And can be accurately welded.
For example, the moving mechanism unit is mounted on the clamp unit and rotates the knob, and the movable base moves in the left-right direction. The moving mechanism unit is mounted on the movable base of the first slider and rotates the knob to move the movable shaft back and forth. It is composed of a second slider that moves in the direction, and by attaching a magnet portion to the tip of the movable shaft of the second slider, the operability is good and the structure can be made compact.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, one embodiment of the present invention will be described with reference to FIG. FIG. 1 is an external perspective view of a welding aid according to the present invention.
Reference numeral 1 denotes a cube-shaped magnet portion, and a steel material can be magnetically attached to the magnetic attachment surfaces 1A and 1B in the same vertical plane by turning on and off a power switch (not shown). Reference numeral 2 denotes a moving mechanism that can move the magnet unit 1 to any position in the left-right direction (X direction in FIG. 1) and the front-rear direction (Y direction in FIG. 1) by manual operation. When the first knob 11 is turned, the movable base 12 moves left and right. A length scale 10 </ b> A is provided on the front surface of the first slider 10. Reference numeral 20 denotes a second slider. When the second knob 21 is turned, the movable shaft 22 moves back and forth. The magnet unit 1 is attached to the tip of the movable shaft 22.
[0006]
Reference numeral 3 denotes a clamp portion for detachably holding the steel material, and the first slider 10 of the moving mechanism portion 2 is mounted on a horizontal upper plate 30A in a base 30 bent in an L shape. . A U-shaped support frame 31 is mounted on the front side of the vertical front plate 30 </ b> B in the base 30, and a plate-like upper base 32 extending in the left-right direction on the lower end surface of the support frame 31 is provided. It is installed. The upper base 32 is provided with a length scale 32A. The front plate 30B is provided with an opening 33 into which a lower base described later is loosely inserted.
[0007]
FIG. 2 is a side view showing the configuration of the clamp portion 3. Reference numeral 34 denotes a fixed grip projecting rearward from the back side of the front plate 30 </ b> B of the base 30. The fixed grip 34 has a U-shaped cross section except for the rear end portion, and the rear end portion is formed in a cylindrical shape so that a thickness adjusting screw described later can be screwed. Reference numeral 35 denotes a substantially L-shaped lower base which is loosely inserted into the opening 33, and a rear end portion of the lower base is pivotally supported by a distal end portion of the fixed grip 34 by a shaft 36. Non-slip teeth 37 are formed at the tip of the lower base 35. Reference numeral 38 denotes a movable grip extended in a rod shape, and forms a pair with the fixed grip 34. The tip of the movable grip 38 is pivotally supported by a shaft 39 at the center of the lower base 35. Reference numeral 40 denotes a link member, one end of which is pivotally supported by a shaft 41 closer to the tip than the center of the movable grip 38, and the rear end is a thickness adjusting screw 42 screwed into the rear end of the fixed grip 34. It is locked to the tip of. A tension spring 43 is interposed between the shaft 36 of the lower base 35 and the fixed grip 34, and urges the lower base 35 clockwise in FIG.
[0008]
Here, the operation of the clamp part 3 will be described. When the movable grip 38 is in the released state, the lower base 35 rotates clockwise by the action of the tension spring 43, and the movable grip 38 that forms a link with the lower base 35. Among the link members 40, the link member 40 rotates clockwise, and the movable grip 38 is pivoted counterclockwise because the portion of the shaft 41 is pushed downward by the link member 40 around the shaft 39. The rear end of the movable grip 38 is open.
From this state, when the fixed grip 34 and the movable grip 38 are gripped and the rear end portion of the movable grip 38 is brought closer to the fixed grip 34, the rear end of the link member 40 is locked to the tip of the thickness adjusting screw 42. Accordingly, the link member 40 rotates counterclockwise while the shaft 41 approaches the fixed grip 34, the shaft 41 moves forward, and the movable grip 38 pushes the lower base 35 forward with the shaft 39, and the tension spring 43. Against this, the lower base 35 rotates counterclockwise about the shaft 36, and the interval between the teeth 37 and the upper base 32 is reduced (see FIGS. 2 and 3).
[0009]
Finally, when the portion between the link member 40 and the shafts 39 and 41 of the movable grip 38 becomes linear like a single rod, the clockwise moment that the pulling force of the pulling spring 43 exerts on the lower base 35. Is counteracted by the counterclockwise moment exerted on the lower base 35 by the drag of the movable grip 38 and the link member 40 against the tensile force of the tension spring 43, and the lower base 35 rotates in both the clockwise and counterclockwise directions. It can no longer be locked (see FIG. 4). Even if the hand is released from the movable grip 38, the lock is not released. In this state, a steel material slightly thicker than the interval T between the teeth of the lower base 35 and the upper base 32 can be sandwiched between the teeth of the lower base 35 and the upper base 32.
If the position of the thickness adjusting screw 42 is behind the state shown in FIG. 1, the distance between the teeth of the lower base 35 and the upper base 32 in the locked state is widened as indicated by T ′ in FIG.
[0010]
When the lock of the clamp part 3 is desired to be released, the rear end part of the movable grip 38 is lowered downward, and a space between the fixed grip 34 is opened. Then, the portion between the link member 40 and the shafts 39 and 41 of the movable grip 38 is folded into a dogleg shape and unlocked. Then, the lower base 35 is rotated clockwise by the action of the tension spring 43, and the link member 40 is rotated clockwise among the movable grip 38 and the link member 40 that form a link together with the lower base 35. Since the portion of the shaft 41 is pushed downward by the link member 40 around the shaft 39, the shaft 38 rotates counterclockwise and the rear end portion of the movable grip 38 is opened.
[0011]
FIGS. 6 to 8 are external perspective views showing how to use the welding auxiliary tool. Hereinafter, the method of using the welding auxiliary tool constructed as described above will be described with reference to these drawings.
Here, a case where the second steel material 60 is welded by positioning on the plate-shaped first steel material 50 will be described as an example (see FIG. 8). The first steel material 50 has holes 51 to 56 of the same diameter all arranged in two rows across the center line 50C, and the second steel material 60 has holes 61 to 63 arranged in one row. It has been drilled. The holes 61 to 63 all have the same diameter as the holes 51 to 56. The distance between the holes 61 and 62 is equal to the distance between the holes 51 and 52, and the distance between the holes 62 and 63 is equal to the distance between the holes 52 and 53. Then, as shown in FIG. 8, the center line 60C of the second steel material 60 coincides with the center line 50C of the first steel material 50 as viewed in the Y-axis direction, and the first steel material 50 as viewed in the X-axis direction. It is assumed that welding is performed at a position where the reference line 60D of the first steel material 50 and the reference line 50D of the first steel material 50 coincide with each other.
[0012]
(1) The clamp welding operator adjusts the thickness of the first steel material 50 to a position where the thickness of the first steel material 50 can be pinched by turning the thickness adjusting screw 42 of the clamp portion 3 in advance.
Then, the clamp portion 3 is set in a released state as shown in FIG. 2, and the first steel material 50 is inserted between the lower base 35 and the upper base 32. When the fixed grip 34 and the movable grip 38 are gripped by hand and the rear end of the movable grip 38 is brought closer to the fixed grip 34, the rear end of the link member 40 is locked to the tip of the thickness adjusting screw 42. Therefore, the link member 40 rotates counterclockwise while the shaft 41 approaches the fixed grip 34, the shaft 41 moves forward, and the movable grip 38 pushes the lower base 35 forward with the shaft 39, and the tension spring 43, the lower base 35 rotates counterclockwise about the shaft 36, and the distance between the teeth 37 and the upper base 32 is reduced (see FIGS. 2 and 3).
[0013]
Finally, when the portion between the link member 40 and the shafts 39 and 41 of the movable grip 38 becomes linear like a single rod, the clockwise moment that the pulling force of the pulling spring 43 exerts on the lower base 35. Is counteracted by the counterclockwise moment exerted on the lower base 35 by the drag of the movable grip 38 and the link member 40 against the tensile force of the tension spring 43, and the lower base 35 rotates in both the clockwise and counterclockwise directions. It becomes impossible and locks (refer FIG. 4), and this will be in the state which the auxiliary tool for welding clamped the 1st steel material 50 (refer FIG. 7).
[0014]
(2) Positioning Next, the power switch of the magnet unit 1 is turned on to excite a coil (not shown) so that it can be magnetized, and the second steel 60 is placed on the magnetized surfaces 1A and 1B. (See FIG. 7). Then, the first knob 11 of the moving mechanism unit 2 is turned to move the movable base 12 of the first slider 10 in the X-axis direction, and the reference line 60D of the second steel material 60 is changed to the reference line of the first steel material 50. 50D, and the second knob 21 is turned to move the movable shaft 22 of the second slider 20 in the Y-axis direction. The center line 60C of the second steel material 60 is changed to the center line 50C of the first steel material 50. Accordingly, the holes 51, 52, and 53 of the first steel material 50 and the holes 61, 62, and 63 of the second steel material 60 are adjusted and positioned so as to be in the same position when viewed in the X-axis direction.
[0015]
(3) When the positioning of the welded first steel material 50 and the second steel material 60 is finished, the second steel material 60 is fixed and held at a desired welding position with respect to the first steel material 50 by the welding auxiliary tool. .
In this state, the welding operator may perform a fillet weld on the butted portion of the first steel material 50 and the second steel material 60 to form a fillet weld portion (see reference numeral 70 in FIG. 8).
[0016]
(4) Removal of welding auxiliary tool After welding, first, the power switch of the magnet part 1 is turned off, the coil is demagnetized, and the magnetism between the magnet part 1 and the second steel material 60 is released.
Subsequently, the rear end portion of the movable grip 38 is lowered downward to leave a space between the movable grip 38 and the fixed grip 34. Then, the portion between the link member 40 and the shafts 39 and 41 of the movable grip 38 is folded into a dogleg shape and unlocked. Then, the lower base 35 is rotated clockwise by the action of the tension spring 43, and the link member 40 is rotated clockwise among the movable grip 38 and the link member 40 that form a link together with the lower base 35. Since the portion of the shaft 41 is pushed downward by the link member 40 around the shaft 39, the shaft 38 is rotated counterclockwise and the rear end portion of the movable grip 38 is opened (see FIG. 2). By rotating the lower base 35 in the clockwise direction, the clamping of the first steel material 50 by the teeth 37 and the upper base 32 is released, and the clamp portion 3 can be removed from the first steel material 50.
In addition, the 1st steel material 50 and the 2nd steel material 60 may be block shape besides plate shape.
[0017]
According to this embodiment, the first steel material 50 is clamped by the clamp part 3, and the second steel material 60 is magnetized by the magnet part 1. And the magnet part 1 is moved to the front-back direction and the left-right direction by the moving mechanism part 2, and the 2nd steel material 60 is positioned in the predetermined welding position with respect to the 1st steel material 50. FIG. As a result, even if an operator other than the welding operator holds the second steel material 60 or does not temporarily fix the second steel material 60 to the first steel material 50 with bolts and nuts, The second steel material 60 can be positioned at a predetermined position with respect to the steel material 50 and can be welded with high accuracy.
The moving mechanism unit 2 is mounted on the clamp unit 3 and mounted on the first slider 10 that moves the movable base 12 in the left-right direction when the first knob 11 is turned, and the movable base 12 of the first slider 10. Then, when the second knob 21 is turned, the movable shaft 22 is configured to move in the front-rear direction, and the magnet unit 1 is attached to the tip of the movable shaft 22 of the second slider 20. Good operability and compact configuration.
[0018]
【The invention's effect】
According to the present invention, even if an operator other than the welding worker does not hold the steel material to be welded or temporarily fix the steel material to be welded with bolts and nuts, the steel material to be welded is predetermined. Can be welded with high accuracy.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a welding auxiliary tool according to an embodiment of the present invention.
FIG. 2 is a side view, partly omitted, showing a clamp part in FIG.
FIG. 3 is a partially omitted side view showing the operation of the clamp part in FIG. 1;
4 is a partially omitted side view showing the operation of the clamp part in FIG. 1. FIG.
FIG. 5 is a partially omitted side view showing the operation of the clamp portion in FIG. 1;
6 is an external perspective view showing how to use the welding auxiliary tool of FIG. 1. FIG.
7 is an external perspective view showing how to use the welding auxiliary tool of FIG. 1; FIG.
8 is an external perspective view showing how to use the welding auxiliary tool of FIG. 1; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Magnet part 1A, 1B Magnetic attachment surface 2 Movement mechanism part 3 Clamp part 10 1st slider 11 1st knob 12 Movable stand 20 2nd slider 21 2nd knob 22 Movable shaft 30 Base board 30A Upper board 30B Front Plate 31 Support frame 32 Upper base 33 Opening 34 Fixed grip 35 Lower base 36, 39, 41 Shaft 37 Tooth 38 Movable grip 40 Link member 42 Thickness adjusting screw 50 First steel materials 51-56, 61-63 Hole 60 Second 60 Steel

Claims (2)

In the welding aid when welding the plate-like or block-like second steel material on the plate-like or block-like first steel material,
A magnet part for detachably magnetizing the second steel material;
A moving mechanism that moves the magnet in the front-rear direction and the left-right direction;
The moving mechanism portion is mounted, and a clamp portion that is detachably clamped to the first steel material,
Having
A welding aid characterized by. The moving mechanism unit is attached to the clamp unit, and when the knob is turned, the first slider in which the movable base moves in the left-right direction;
The second slider is mounted on the movable base of the first slider and the movable shaft moves in the front-rear direction when the knob is turned.
A magnet portion is attached to the tip of the movable shaft of the second slider;
The auxiliary tool for welding according to claim 1.

Images