KR101599502B1 - fixing apparatus of cylindrical weldment - Google Patents

Abstract

The present invention relates to a device for fixating a cylindrical weldment. Both ends of a cylindrical weldment with open top and bottom firmly support first and second jigs to greatly increase the precision of welding of the cylindrical weldment. Since the first and second jigs are detachable from the body of the weldment in a sliding style, the replacement and inspection of equipment can be facilitated. Cylindrical grooves are formed on the second jig to support an end which does not have hole processing blades, and the first jig includes upper and lower jigs to insert the processing blades. At the same time, the inclined surface of the hole processing blades is in contact with the inclined surface of the upper jig. Therefore, the hole processing blades can be prevented from being damaged while firmly fixating the hole processing blades. A pressurizing part is moved by the rotation of a handle part, and the second jig which is coupled to the pressurizing part is horizontally moved. Thereby, the weldment can be firmly fixated with only a simple manipulation.

Description

[0001] The present invention relates to a fixing apparatus for cylindrical welding,

More particularly, the present invention relates to a cylindrical welding object fixing device, in which both end portions of a cylindrical welding object are firmly fixed and a simple structure is provided, And to provide a cylindrical welding object fixing device capable of remarkably increasing the productivity by shortening the process time as well as dramatically increasing the accuracy of the welding.

Welding is a metal material joining method in which a metal material is heated and melted at a joining portion to rearrange and combine atomic bonds of two different materials, and there are arc welding, gas welding and thermite welding.

Since this welding is performed after firmly fixing the joint surfaces of the objects to be welded, how to firmly fix the joint surfaces of the materials greatly affects the accuracy of the welding, but the welder has a welder in one hand, It is very troublesome and difficult to fix the bonding surfaces of the materials because the welding must be performed while holding the electrodes.

BACKGROUND ART Recently, a thin film-like workpiece such as a prism film, a polarizing film, a shielding film, a protective film, a reflection film and other special film materials such as a film which is an optical material used for an LCD, a PDP, A neck type die is widely used. Such a neck type die is a plate type support which is formed of an iron plate, a wood or a resin material, and a hole processing jig which is coupled to a support and is used for machining holes of various shapes for the workpiece . At this time, when the workpiece is supplied to the lower part of the support frame, the neck mold is pressed by a separate press so that the workpiece forms a hole by the hole machining jig as it touches the workpiece.

Further, the hole machining jig is formed in a cylindrical shape with upper and lower portions where the blade is formed at the end, and is provided at the position of the support corresponding to the position of the hole to be machined.

1 is a perspective view showing a hole machining jig applied to a conventional neck mold.

1, the hole machining jig 100 includes a body 101 made of a cylindrical metallic material whose upper and lower portions are open S, a hole 101 formed in a circular shape at one end of the body 101, (103). At this time, a joining portion 105 joined by welding is formed on the side of the body 101.

The hole machining jig 100 is coupled to one side of the supporting table and is coupled to the supporting table so that the hole forming edge 103 at the end protrudes outward from one side of the supporting table so as to be pressurized by a press, So that holes are formed in the workpiece.

The process of manufacturing the hole finishing tool 100 having the above-described structure will be described with reference to FIG.

2 is a process flow chart for explaining the manufacturing process of the hole finishing tool.

As shown in FIG. 1, the hole finishing jig 100 is manufactured by cutting a metal plate having an area and forming a band-shaped metal plate having a length corresponding to the inner diameter of the hole A step S120 of forming a blade corresponding to the hole machining jig 100 of FIG. 1 on one side of the band metal plate in the longitudinal direction, A roll bending process S130 for forming a cylindrical shape by pressing a band metal plate having a blade formed by a blade forming process S120 using a device such as a bending roller, (S140) in which opposite opposite ends of a band-shaped metal plate formed in a cylindrical shape are welded and joined together.

When the hole-forming jig 100 is formed into a cylindrical shape by the rolling bending process (S130), both ends of the joining region must be joined through a welding process (S140). As described above, The welding process (S140) is more difficult and the process time is delayed. In addition, since the precision of welding is lowered and the defect rate is high, the productivity is lowered .

Also, the marking and cutting process S110, the blade forming process S120, and the roll bending process S130 are performed quickly and accurately using separate equipment. However, as shown in FIG. 1, There is no research on a device for fixing the welding process (S140) to facilitate the welding process (S140).

Korean Registered Patent No. 10-0352789 (entitled "Fixing Device for Laser Welding Plate"), Korean Registered Patent No. 10-1351490 entitled Fixed Jig Unit of Thin Sheet Welding Apparatus, 20120003367 discloses a fixing device for firmly fixing a welding portion of a welding object in a magnetic angle adjusting welding fixing device. However, the fixing devices are not limited to a cylindrical shape as in the hole processing jig 100 of FIG. , But it is designed to target welding objects of flat plate shape, so that it is not possible to apply a circular column welding object.

3 is a perspective view showing a fixing device for rod welding disclosed in Korean Patent No. 10-0920170 (entitled "Fixing Device for Rod Welding of Automobile Silencer").

As shown in FIG. 3, a rod welding fixture (hereinafter, referred to as a conventional technique) 200 is for welding a pipe-shaped rod (ROD) with ease. More specifically, And a clamp 222 fixed to the screw shaft 217 and fixing the rod 212. The clamp 212 is fixed to the screw shaft 217. The clamp 212 is fixed to the screw shaft 217,

And a screw shaft 217 is screwed to the screw groove 216 of the support table 215. The screw shaft 216 is screwed into the screw groove 216 of the support table 215. [

The clamp 222 is formed by an upper plate 223 and a lower plate 224 and the upper end of the screw shaft 217 is fixed to the lower surface of the lower plate 224.

In the conventional art 200 configured as described above, the fixing table 213 is placed on the table 211, the switch 214 is operated to fix the table 213 to the table 211 by the electromagnet, The handle 220 is inserted into the groove 226 of the clamp 222 and fixed by the holder 27 and then rotated by inserting the handle 220 into the hole 219 of the screw shaft 217 so that the height of the screw shaft 217 So that the rod is welded to the silencer while the rod is supported.

However, the conventional technique 200 is merely to weld the joint portion between the cylindrical rod and the silencer, and the object to join the side portions forming the side of the cylinder, such as the hole finishing tool 100 of FIG. 1, And the hole finishing jig 100 has a limit to which it can not be applied.

That is, it is possible to (1) target a welding object formed in a cylindrical shape with its upper and lower portions opened and the side portion cut, (2) firmly fix the joint portion of the cylindrical welding object, And 3) it has a simple structure, so that it is easy to assemble and disassemble the welding object and the constituent parts, and 4) a driving method for fixing the welding part of the welding object is simple, It is true.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a welded cylindrical object having upper and lower openings, So that it is possible to remarkably increase the welding precision with respect to the object.

Another object of the present invention is to provide a fixing device for a welding object in which the first jig and the second jig are configured to be detachably attached to the body in a sliding manner so that equipment replacement and inspection are facilitated.

In addition, another object of the present invention is to provide a method of manufacturing a cutting tool, wherein a circular groove is formed in the second jig to support an end where the hole is not formed, wherein the first jig includes an upper jig and a lower jig, And the inclined surface of the hole processing edge is made to be in contact with the inclined surface of the upper jig at the same time that the hole processing edge of the jig is inserted so that the hole can be fixed firmly to the hole while the hole is not damaged will be.

Further, according to another aspect of the present invention, there is provided a welding apparatus including a welding object fixing unit that is configured to move the pressing unit in response to rotation of a handle unit and thereby to move the second jig coupled to the pressing unit horizontally, Device.

In order to solve the above-mentioned problem, the present invention provides a welding object fixing apparatus for fixing both ends of an open end of a welding object for welding side portions of a cylindrical welding object having upper and lower openings, the welding object fixing device comprising: A body vertically installed on an upper surface of one end portion of the first support portion formed of a plate member penetrating both surfaces of the body and having a second support portion vertically installed on the upper surface of the other end portion; A rotation shaft formed in a bar shape and inserted into the through hole of the first support portion, one end of the rotation shaft being located outside the first support portion and the other end being located inside the first support portion; A pressing part formed in a plate shape and connected to the other end of the rotary shaft so as to be movable apart from the upper surface of the body; A first jig formed of a plate material and installed on the other surface of the pressing portion facing the second support portion; And a second jig formed of a plate member having a groove portion for supporting one end of the object to be welded and provided on one surface of the second support portion facing the first support portion, The jig is formed on the other surface of the jig which is not formed with the groove and protrudes outward from the other surface to extend in the height direction and connected to the upper and lower surfaces and has a raised protrusion which increases in width from the other surface toward the outside, Wherein the engaging recesses of the first jig and the second jig are slid in the direction from the upper portion to the lower portion by being connected to the upper and lower surfaces by extending in the height direction, The first jig and the second jig are detachably attached to the pressing portion and the second supporting portion, The first jig is formed of a plate member having the raised protrusion formed on one surface thereof, and a jig insertion hole is formed on the other surface of the bulging protrusion and the jig insertion hole, The jig body is inserted into the jig insertion hole and is inserted into the jig insertion hole at the upper side with respect to the engagement jaws. When the lower side of the jig is inserted into the jig insertion hole, The upper jig is inserted into the jig insertion hole and inserted into the lower jig insertion hole with respect to the engagement jaws. The upper jig is formed as a convex curved surface that is upwardly directed toward the intermediate point on both sides Wherein the upper jig and the lower jig have an end formed with the embossed protrusion when the jig is inserted into the jig insertion hole Protruding from the other surface that would be formed in the space between the concave surface and the convex surface, and the other end of the welding object inserted into the space.
According to the present invention, the rotary shaft is provided with a handle at one end thereof, a thread is formed on the outer surface thereof, and the first support part forms a thread on the inner wall surface forming the through hole, and the rotary shaft is fixed to the through- It is preferable to be screwed.

delete

delete

delete

Further, in the present invention, the groove portion of the second jig is circular, and the other end of the welding object is inserted into the circular groove.

delete

delete

Further, in the present invention, the engagement jaws include inclined surfaces so that the thickness of the engagement jaws becomes narrower toward the outside from the inner side wall forming the jig insertion hole of the jig body, and the upper jig is formed with an inclined surface And the lower surface of the lower sheet is formed with an inclined surface at an edge of the lower surface that is to be engaged with the engaging jaw and is engaged with the inclined surface of the engaging jaws.

Further, in the present invention, the welding object is formed of a blade whose width becomes narrower as the other end portion inserted into the space between the upper jig and the lower jig of the first jig goes outward, And the convex surface of the lower surface of the lower jig and the convex surface of the lower surface of the jig body are formed as inclined surfaces, The inclined surface of the connecting portion of the lower sheet is inclined at the same angle as the inclined surface of the blade so that the end of the blade is inserted into the space between the concave surface and the convex surface.

According to the present invention having the above-mentioned problems and the solutions, both end portions of a cylindrical welding object having upper and lower openings are firmly supported through the first and second jigs, and the accuracy of welding to a cylindrical welding object, Can be dramatically increased.

Also, according to the present invention, since the first and second jigs are configured to be detachably attached to the body in a sliding manner, equipment replacement and inspection can be facilitated.

According to the present invention, a circular groove is formed in the second jig to support an end where the hole is not formed, wherein the first jig includes an upper jig and a lower jig, And the inclined surface of the hole processing blade is made to be in contact with the inclined surface of the upper jig at the same time as the blade is inserted, thereby making it possible to hold the hole and securely fix the hole without damaging the hole.

According to the present invention, the pressing portion moves according to the rotation of the handle portion, and the second jig coupled to the pressing portion is configured to be horizontally movable, so that the welding object can be firmly fixed by a simple operation.

1 is a perspective view showing a hole machining jig applied to a conventional neck mold.
2 is a process flow chart for explaining the manufacturing process of the hole finishing tool.
3 is a perspective view showing a fixing device for rod welding disclosed in Korean Patent No. 10-0920170 (entitled "Fixing Device for Rod Welding of Automobile Silencer").
4 is a perspective view showing a welding target fixing apparatus according to an embodiment of the present invention.
5 is a side view of Fig.
Fig. 6 is a perspective view showing the body of Fig. 4;
Fig. 7 is a perspective view showing the engraved groove of the second support portion of Fig. 6;
8 is a perspective view showing the second jig of Fig.
Fig. 9 is a perspective view showing the first jig of Fig. 4;
10 is an exploded perspective view of Fig.
Fig. 11 is a perspective view of the jig body of Fig. 9 viewed from another angle. Fig.
12 is a front view showing the upper jig of Fig.
13 is a side view for explaining the upper jig and the lower jig of Fig.
Fig. 14 is a front view of Fig. 13. Fig.
Fig. 15 is a side cross-sectional view for explaining a hole-processed blade of a hole processing tool to be welded according to the present invention.

Hereinafter, the present invention will be described with reference to the drawings.

FIG. 4 is a perspective view showing a welding target fixing apparatus according to an embodiment of the present invention, and FIG. 5 is a side view of FIG.

4 and 5, each of the open ends of the object to be welded is to be supported when the upper and lower openings of the cylindrical welding object such as the hole finishing tool 100 of Fig. 1 described above are to be welded Thereby improving the accuracy of welding. Hereinafter, for the sake of convenience of explanation, the welding object is the hole finishing tool 100 of FIG. 1 which has been described above.

The welding object fixing device 1 also includes a body 3, a handle 4, a pressing portion 5, a first jig 7, and a second jig 9.

Fig. 6 is a perspective view showing the body of Fig. 4, and Fig. 7 is a perspective view showing an engraved groove of the second support portion of Fig.

The body 3 is formed as a rectangular parallelepiped body having a length as shown in FIG. 6, and first and second support portions 31 and 33 are formed protruding from both sides of the upper face to the outer side from the upper face.

The first support portion 31 is formed in a rectangular parallelepiped shape from an upper surface adjacent to one end of the body 3 and a through hole 311 through which the rotation axis 43 of the handle portion 4 passes is formed at the center. At this time, a thread 313 is formed on the inner wall surface of the first support portion 31 forming the through hole 311 so that the rotation axis 43 of the handle portion 4 is inserted into the through hole 311 of the first support portion 31 The threads are fastened together.

The second support portion 33 is formed in a rectangular parallelepiped shape and protrudes from an upper surface adjacent to the other end portion of the body 3.

As shown in FIG. 7, the second support portion 33 is formed to extend from the first surface toward the first support portion 31 inward from the first support portion 33 in the height direction, and to connect the upper and the lower surfaces. At this time, the engraved groove 331 is formed to increase in width from the outside toward the inside, and the embossed projection 93 of the second jig 9 is slid in the direction of the downward direction from the engraved groove 311 So that the second jig 9 is detachably attached to the second support portion 33.

The first support portion 31 and the second support portion 33 are formed to protrude from the upper surface of the body 3 and are spaced apart from each other by a predetermined distance so that the first support portion 31 and the second support portion 33 of the body 3 33, and the pressing portion 5 is horizontally moved through these spaces.

The handle 4 includes a rotary shaft 43 having a thread 431 formed on the outer surface thereof and a handle 41 coupled to one end of the rotary shaft 43.

The handle portion 4 is formed so that the threaded portion 431 of the rotating shaft 43 is inserted into the thread 313 of the through hole 311 of the first support portion 31 so that the end portion of the threaded portion 431 protrudes outward through the first support portion 31 Respectively. That is, the handle portion 4 is configured such that the handle 41 provided at one end of the rotary shaft 43 is located outside the first support portion 31 and the other end of the rotary shaft 43 is projected to the inside of the first support portion 31 So that it is coupled to the first support portion 31 as much as possible. The other end of the rotary shaft 43 is coupled to one surface of the pressing portion 5 facing the first supporting portion 31 so that the pressing portion 5 presses the first supporting portion 3 and the second supporting portion 3 in accordance with the rotation of the hand 41, And moves between the supporting portions 5.

When the handle 41 is rotated by the user, the threaded portion 431 of the rotary shaft 43 passes through the first support portion 31, The threaded portion 431 of the rotary shaft 43 is engaged with the threaded portion 313 of the hole 311 to move the end portion in the direction toward the second support portion 33. When the handle 41 is reversely rotated, The pressing portion 5 is unfastened to the thread 313 of the through hole 311 of the rotary shaft 31 so that the end portion is moved in the direction toward the first supporting portion 31, Is horizontally moved between the first supporting portion 31 and the second supporting portion 33 in accordance with the rotation of the handle.

That is, the user can rotate the handle 41 of the handle portion 4 to control the distance between the second support portion 33 and the pressing portion 5.

4 and 5, the pressing portion 5 is formed in a rectangular parallelepiped shape, and a circular insertion groove 51 into which the end portion of the rotation shaft 43 is inserted from one side toward the inside is formed on one surface facing the first support portion 31 (Not shown) is formed on the inner wall surface forming the insertion groove 51. The pressing portion 5 is coupled to the rotary shaft 43 of the handle portion 4 by fastening the thread of the insertion groove 51 to the threads 431 adjacent to the end of the rotary shaft 43. [

The depressed portion 5 also has a depressed groove 53 extending in the height direction from one surface to the other in a direction toward the second support portion 33 like the depressed depression 331 of the second depressed portion 33 in FIG. And connected to upper and lower surfaces. At this time, the engraved groove 53 is formed so that the width of the opening is increased from the outside toward the inside, and the embossed projection 713 of the first jig 7 is slid in the direction toward the lower portion as the engraved groove 53 So that the second jig 9 is detachably coupled to the pressing portion 5.

8 is a perspective view showing the second jig of Fig.

The second jig 9 of FIG. 8 is formed of a rectangular plate having an area. A circular groove 91 is formed on one side of the plate from the first side to the inner side. 1 support portion 31 of the second support portion 33. [ At this time, the circular groove 91 is formed to have the same size as the inner diameter of the object to be welded, and an end of the hole finishing jig 100 of FIG. 1, The second jig 9 supports the end portion of the hole finishing jig 100 on which the hole finishing edge 103 is not formed. At this time, the hole machining jig 100 is inserted at one end into the circular groove 91 of the second jig 9 so that the joining portion 105 to be joined faces the straight portion.

The second jig 9 is formed with a convex protrusion 93 protruding from the other surface in a height direction on the other surface opposite to the one surface on which the circular groove 91 is formed. At this time, the embossing protrusion 93 extends in the height direction and is connected to the upper and lower surfaces, and the width increases from the inside toward the outside, so that the embossing protrusion 93 in the direction from the upper part to the lower part, So that the second jig 9 can be detachably attached to the second support portion 33.

That is, when the circular groove 91 of the second jig 9 is damaged or broken due to continuous friction with the end of the hole finishing tool 100, the welding object fixing device 1, which is an embodiment of the present invention, The second jig 9 can be disassembled simply by pushing up the embossed projection 93 of the first jig 9 in the direction from the bottom to the top so that the equipment can be easily checked and replaced.

FIG. 9 is a perspective view showing the first jig of FIG. 4, FIG. 10 is an exploded perspective view of FIG. 9, and FIG. 11 is a perspective view of the jig body of FIG. 9 viewed from another angle.

9 to 11, the first jig 7 includes a jig body 71, an upper jig 73 and a lower jig 75, and the second jig 9 Is inserted into the second support part (33) so as to be detachably attached to the first support part (31) in a sliding manner.

The jig body 71 is formed of a rectangular plate member having an area, and one surface of the jig body 71 protrudes from one surface so that the embossed projection 717 extends in the height direction. At this time, the embossing protrusion 717 extends in the height direction and is connected to the upper and lower surfaces, and the width of the embossing protrusion 717 increases as the width increases toward the outside, so that the embossing protrusion 717 of the first jig 7, 53 to be detachably attached to the second support portion 33 by being slidably inserted in the direction from the upper portion to the lower portion.

The jig body 71 is formed with a jig insertion hole 711 passing through both sides of the outer surface of the boss protruding portion 717 and one surface opposed to the outer surface of the boss protrusion 717. The jig insertion hole 711 has an upper jig 73, And the lower jig 75 is inserted and installed.

'자 형상으로 형성된다. 이때 걸림턱(712)은 지그 삽입공(711)을 형성하는 지그몸체(71)의 내벽면으로부터 외측을 향할수록 폭이 좁아지도록 경사면(713), (713')들을 포함함으로써 걸림턱(712)을 기준으로 지그 삽입공(711)의 상부에는 상부지그(73)가, 하부에는 하부지그(75)가 삽입된다.The jig insertion holes 711 are formed in a rectangular shape when viewed from the top, and the jaws 712 are protruded toward the side,

Shaped. At this time, the stopping jaw 712 includes the inclined surfaces 713 and 713 'to narrow the width from the inner wall surface of the jig body 71 forming the jig insertion hole 711 toward the outer side, The upper jig 73 is inserted into the upper portion of the jig insertion hole 711 and the lower jig 75 is inserted into the lower portion thereof.

Fig. 12 is a front view showing the upper jig of Fig. 9, Fig. 13 is a side elevational view for explaining the upper jig and lower jig of Fig. 9, and Fig. 14 is a front elevational view of Fig.

The upper jig 73 is formed in a rectangular parallelepiped shape as shown in FIGS. 10 and 12, and has a concave curved surface 731 upward from the both side portions toward an intermediate point on the lower surface. The concave curved surface 731 and the concave curved surface 733, 733 'are formed on the connecting portion connected to the connecting portions 731, 731. That is, when the upper jig 73 is inserted into the jig insertion hole 711, the inclined surfaces 733 and 733 'of both side portions of the concave curved surface 731 are inclined to the upper inclined surface 712 of the engagement protrusion 712 of the jig insertion hole 711, And the upper jig 73 is supported by the engaging jaw 712 by being engaged with the upper jig 713.

The upper jig 73 is inserted into the jig insertion hole 711 so that the end portion protrudes outward from the jig body 71.

In addition, the upper jig 73 is formed with an inclined surface 735 in a connecting portion where an outwardly protruding surface and a concave surface 731 are connected.

The lower jig 75 is formed in a rectangular parallelepiped shape and a convex surface 751 corresponding to the concave surface 731 of the upper jig 73 is formed upward from the both sides toward the middle point on the upper surface, The inclined surfaces 753 and 753 'are formed on both sides of the jig insertion hole 711 and the inclined surfaces 753 and 753' And is inclined to the inclined surfaces 713 '.

The lower jig 75 is inserted into the jig insertion hole 711 so that the end portion of the lower jig 75 protrudes outward from the jig body 71 when the jig 75 is inserted into the jig insertion hole 711. [

In addition, the lower jig 75 is formed with an inclined surface 755 at a connecting portion where an outwardly projecting side surface and an upper convex surface 751 are connected.

The upper jig 73 and the lower jig 75 constructed as described above are inserted into the jig insertion holes 711 of the jig body 71 and the inclined surfaces 733 and 733 ' The inclined surfaces 753 and 753 'of the jig 75 are inserted into the upper and lower jaws 73 and 75' while being separated from the inclined surfaces 713 and 713 'of the engaging jaw 712, A predetermined gap d is formed between the concave curved surface 731 and the convex curved surface 751 of the lower jig 75 as shown in Figs.

Since the upper and lower jig 73 and the lower jig 75 are formed of the inclined surfaces 735 and 355 at the lower and upper portions of the surfaces protruding outwardly, the separation distance d1 by the inclined surfaces 733 and 735 Is formed to have a length larger than the distance d between the concave surface 731 and the convex surface 751 as described above. The upper jig 73 and the lower jig 75 are spaced apart from each other by a predetermined distance d when the jig 73 is inserted into the jig insertion hole 711 and the inclined surfaces 735 of the upper jig 73 and the lower jig 75, And 755 are increased by increasing the distance d1 from the inside to the outside by the inclined surfaces 735 and 755. [

Fig. 15 is a side cross-sectional view for explaining a hole-processed blade of a hole processing tool to be welded according to the present invention.

The hole finishing tool 100 of FIG. 1 described above has a hole finishing edge 103 formed at one end thereof as shown in FIG. 15, and the hole finishing edge 103 is formed so as to be directed toward the end portion for cutting the workpiece The thickness is narrowed to form a sharp shape.

The thickness of the region P2 adjacent to the edge of the hole forming blade 103 is denoted by d2 and the thickness of the region P3 adjacent to the side edge is denoted by d3.

The thickness d2 of the end portion P2 of the hole processing blade 103 is equal to the distance d1 between the inclined surfaces 735 and 755 of the upper and lower jigs 73 and 75 and the distance d2 between the upper and lower jigs 73 and 75, D2 of the area P2 adjacent to the side of the hole finishing blade 103 is smaller than the distance d between the concave curved surface 731 and the convex curved surface 751 of each of the holes 75, Is smaller than the distance d1 between the inclined surfaces 735 and 755 of the upper and lower jigs 73 and 75 and is smaller than the distance d1 between the concave surfaces 731 and 731 of the upper and lower jigs 73 and 75, The distance between the concave surface 731 and the convex surface 751 of the upper and lower jigs 73 and 75 is larger than the distance d between the upper and lower jigs 73 and 751, Respectively. At this time, the hole forming blade 103 is held by the first jig 1 in a state in which the end is not pressed by the inclined surface forming the blade being brought into contact with the inclined surface 735 of the upper jig 73, .

The hole forming blade 103 is formed in a circular shape and the gap formed between the upper jig 73 and the lower jig 75 is also curved so that the first jig 71 can be rotated in a direction perpendicular to the hole forming jig 100 So that it can be firmly supported.

The operation of the welding fixture 1 according to one embodiment of the present invention will now be described. First, the embossed projection 713 of the first jig 7 is inserted into the engraved groove 53 of the pressing portion 5, The embossing protrusion 93 of the second jig 9 is inserted into the engraved groove 331 of the second support portion 33 and then the hole is formed in the circular groove 91 of the second jig 9, Thereby preventing the hole forming edge 103 from being formed. At this time, the joining portion 105 of the hole machining jig 100 is inserted into the circular groove 91 of the second jig 9 in a state in which the joining portion 105 faces the straight portion.

In this state, when the handle 41 of the handle portion 4 is rotated, the pressing portion 5 and the first jig 7 are moved toward the hole machining jig 100 coupled to the first jig 7, The hole finishing edge 103 of the hole machining jig 100 is inserted into the spaced space between the upper jig 73 and the lower jig 75 of the first jig 7, Is fixed by the first jig 7 and the second jig 9. When the fixing of the hole finishing tool 100 is completed, the welding portion 105 of the hole finishing tool 100 is welded do.

1: Fixing device to be welded 3: Body 4: Handle part
5: pressing portion 7: first jig 9: second jig
31: first support portion 33: second support portion 41: handle
43: rotation shaft 71: jig body 73: upper jig
75: Lower jig

Claims (9)

An object to be welded for fixing both open ends of the welding object to weld side portions of a cylindrical welding object having upper and lower openings, comprising:
A body formed in a rectangular parallelepiped shape and having a first support portion formed of a plate material penetrating both sides of the first support portion vertically on the upper surface of one end portion and a second support portion formed on the plate member perpendicularly to the upper surface of the other end portion;
A rotation shaft formed in a bar shape and inserted into the through hole of the first support portion, one end of the rotation shaft being located outside the first support portion and the other end being located inside the first support portion;
A pressing part formed in a plate shape and connected to the other end of the rotary shaft so as to be movable apart from the upper surface of the body;
A first jig formed of a plate material and installed on the other surface of the pressing portion facing the second support portion;
And a second jig provided on one surface of the second support portion facing the first support portion, the second jig being formed of a plate member having a groove portion for supporting one end of the welding object on one surface thereof,
The first jig and the second jig are formed on the other surface of the other surface on which the groove is not formed and extend outward from the other surface to extend in the height direction and connected to the upper and lower surfaces,
The depressed portion and the second support portion are formed with depressed depressions from one surface to the other in the opposite surface, and the depressed depressions extend in the height direction and are connected to the upper and lower surfaces, whereby the depressions of the first and second jig The first jig and the second jig are detachably attached to the pressing portion and the second supporting portion by being inserted in a sliding manner from the upper portion to the lower portion,
The first jig
And a jig inserting hole is formed in the outer surface of the embossed protrusion so as to penetrate both surfaces of the insulator. The jig inserting hole is formed in the inner sidewalls The jig body is inserted into the jig insertion hole and inserted into the jig insertion hole at the upper side with respect to the engagement jaws. The lower surface of the jig is inserted into the concave surface And a lower jig inserted into the jig insertion hole and inserted into the lower jig insertion hole with respect to the engagement jaws and formed of a convex curved surface whose upper surface is upwardly directed toward an intermediate point on both side portions,
Wherein the upper jig and the lower jig protrude from the other surface on which the embossed projection is not formed when the jig is inserted into the jig insertion hole and form a space between the concave curved surface and the convex curved surface, And the other end is inserted. delete [2] The apparatus according to claim 1, wherein the rotating shaft is provided with a handle at one end,
Wherein the first support portion forms a thread on the inner wall surface forming the through hole, and the rotation shaft is threadedly fastened to the through hole of the first support portion. delete The welding fixture according to claim 3, wherein the groove portion of the second jig is circular, and the other end of the welding object is inserted into the circular groove. delete delete 6. The jig according to claim 5, wherein the engaging jaws include inclined surfaces so that the thickness gradually decreases toward the outside from the inner wall defining the jig insertion hole of the jig body,
Wherein the upper jig is formed with an inclined surface at an angle to be engaged with the engaging jaw and is engaged with the inclined surface of the engaging jaws and the lower jaw is formed with an inclined surface at an angle to be engaged with the engaging jaw to be engaged with the inclined surfaces of the engaging jaws . The welding apparatus according to claim 8, wherein the welding object is formed of a blade whose width is narrower as the other end of the first jig is inserted into the space between the upper jig and the lower jig,
Wherein the upper jig has a protruding surface protruding outward from the jig body and a concave surface of the concave surface is formed as an inclined surface,
Wherein the jig body has a convex surface protruding outwardly from the jig body and a concave surface connected to the convex surface,
Wherein the inclined surface of the connecting portion of the upper jig and the lower surface is inclined at the same angle as the inclined surface of the blade so that the end of the blade is inserted into the space between the concave surface and the convex surface.

Images