JP2014114118A - Welding wire storage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding wire storage container from which large-diameter welding wire can be smoothly drawn without twisting while having a simple configuration at low cost.SOLUTION: The welding wire storage container for storing wire 51 of an aluminum alloy used for welding includes: a body 2 in which the wire 51 is stored in a wound state in an annular storage part 12 between an inner cylinder 4 and an outer cylinder 3; an umbrella-shaped cover 8 having a central drawing hole 10 from which the wire 51 is drawn upward; and a cylindrical spacer 11 inserted between the body 2 and the cover 8.

Description

  The present invention relates to a storage container for storing a welding wire used in automatic welding equipment.

  Conventionally, a welding wire of an automatic welding facility is spirally wound and stored on a supply reel, and is sequentially drawn from the supply reel by a wire feeding device and supplied. In this reel-type wire storage device, since the number of windings of the welding wire around the supply reel is small, the frequency of replacing the supply reel becomes relatively high, and the welding operation is stopped every time the replacement is made, so that automatic welding equipment The utilization rate of the system decreases. In recent years, therefore, a storage container K1 as shown in FIG. 3 has been used. This storage container K1 has a body 30 having an annular storage portion 33 between an outer cylinder 31 and an inner cylinder 32 arranged concentrically, and a welding wire 50 is spirally wound around the storage portion 33. Stored. The fuselage 30 containing the welding wire 50 is delivered from the supplier to the welding site. At the welding site, the cover 38 is connected to the upper part of the outer cylinder 31 to assemble the storage container K1 for the welding wire 50 (Patent Document 1). reference).

  The cover 38 has a lower end opening having the same diameter as the upper end opening of the outer cylinder 31 and is formed in a truncated cone-shaped umbrella shape that tapers upward, and a connecting flange 41 and an outer cylinder provided at the lower edge of the cover 38. In a state where the 31 connecting flanges 42 are abutted with each other, they are connected by an annular connecting band 43 so as to be separable. The body 30 is a standard product in which the outer cylinder 31 and the inner cylinder 32 are set to a certain size, which will be described later, and can accommodate the welding wire 50 having a significantly larger number of turns than a reel-type wire storage device.

  At a welding site where automatic welding is performed using automatic welding equipment, the cover 38 is connected to the outer cylinder 31 of the purchased body 30 as described above, and then the opening / closing lid 39 covering the window 37 provided on the cover 38 is opened. Then, while looking through the window 37, the hand is put in, and the tip of the welding wire 50 housed in the body 30 is inserted into the lead-out hole 40 formed in the center (top) of the cover 38 and pulled out. . The leading end portion of the drawn welding wire 50 is attached to a wire feeding device (not shown) so as to be sequentially drawn. When all of the welding wires 50 in the fuselage 30 are used, the cover 38 is separated from the fuselage 30 and the empty fuselage 30 is replaced with a new fuselage 30 in which the welding wire 50 is stored.

  When aluminum alloy welding is performed by an automatic welding facility, an aluminum alloy welding wire 50 having a wire diameter of 1.2 mm is generally used. As an automatic welding body 30 containing the welding wire 50, an outer cylinder 31 having an outer diameter r1 of 510 mm and a height h1 of 750 mm and an outer cylinder 42 having an outer diameter r2 of 305 mm and a height h2 of 700 mm are provided. What you have exists as a standard product. When the welding wire 50 accommodated in the body 30 is sequentially pulled out from the pull-out hole 39 of the cover 38 by the wire feeding device, a pull-out line that connects the upper end edge of the inner cylinder 32 that is in sliding contact with the pull-out hole 40 of the cover 38. The angle α1 with respect to the horizontal plane is about 64 °, and the welding wire 50 is smoothly and sequentially drawn from the drawing hole 40.

  By the way, in recent years, automatic welding of aluminum alloy members having a large plate thickness is performed using a welding wire having a large wire diameter of 2 mm, and the above-described wire diameter of 2 mm is provided on the body 2 of the storage container K2 shown in FIG. A product containing the welding wire 51 exists as a standard product. The standard body 2 has an outer cylinder 3 having an outer diameter R1 of 660 mm and a height H1 of 750 mm, and an inner cylinder 4 having an outer diameter R2 of 450 mm and a height H2 of 700 mm. In this way, the body 2 stores the welding wire 51 having a large wire diameter for a required length, so that the outer diameter R1 of the outer cylinder 3 and the outer diameter R2 of the inner cylinder 4 are larger than those of the storage container K1 in FIG. It is set large. The cover 8 has a shape in which the lower end opening has a large opening diameter corresponding to the outer diameter R1 of the outer cylinder 3 as the shape of the outer cylinder 3 to be connected increases. A window 7, its opening / closing lid 9, and a drawer hole 10 are provided.

JP 2001-179450 A

  However, when the welding wire 51 is pulled out from the storage container K1 containing the aluminum alloy welding wire 51 having a wire diameter of 2.0 mm, the welding wire 51 is twisted, and the welding wire is pulled out from the pull-out hole 10 of the cover 8. There may be a situation where 51 is not pulled out smoothly. If such a situation occurs during automatic welding such as TIG welding or gas arc welding by a welding robot, welding is not possible because the welding wire 51 is not supplied, and welding such as opening a hole in the welding object is performed. Defects occur. On the other hand, the wire pressing technique disclosed in the cited document 1, that is, a glass ball is spread on the upper surface of the welding wire stored in the storage container, and the welding wire remaining in the storage container is pulled out of the cover hole. The technique of holding the steel wire against the pulling force toward the surface does not prevent the twisting of the welding wire 51 having a wire diameter as large as 2.0 mm.

  The above-described twisting of the welding wire 51 is caused by the fact that the outer diameter R2 of the inner cylinder 4 is increased as the wire diameter of the welding wire 51 to be accommodated is increased. One reason seems to be that the welding wire 51 is pulled up at a steep angle as a result of the angle α2 of the drawing line connecting the eight drawing holes 10 with respect to the horizontal plane being as small as about 52 °. Therefore, although an attempt was made to increase the angle α2 by reducing the height H2 of the inner cylinder 4, the occurrence of twisting of the welding wire 51 could not be suppressed.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a welding wire storage container capable of smoothly pulling out a welding wire having a large wire diameter without causing twisting while having a simple configuration that does not increase the cost. .

  In order to achieve the above object, a welding wire storage container according to the present invention is a container for storing an aluminum alloy wire used for welding, and is provided in an annular storage portion between an inner cylinder and an outer cylinder. A trunk in which the wire is stored in a wound state, an umbrella-shaped cover having a drawer hole for pulling the wire upward in the center, and a cylindrical spacer inserted between the trunk and the cover I have.

  In this welding wire storage container, the cylindrical spacer is inserted between the fuselage and the cover, so that the mounting position of the cover relative to the fuselage is increased by the height of the spacer. The distance from the upper end edge of the inner cylinder in sliding contact with the cover extraction hole is increased by the height of the spacer, and the angle of the extraction line connecting the upper end edge of the inner cylinder and the extraction hole of the cover with respect to the horizontal plane is increased. As a result, a long free space where the welding wire does not touch the surroundings is formed above the inner cylinder, and the welding wire is not pulled up at a steep angle. Accordingly, even when a welding wire having a large wire diameter is pulled out, a large twist is unlikely to occur, and the small twist sufficiently recovers in a long space until reaching the extraction hole. Thereby, the welding wire without twist can be smoothly pulled out from the drawing hole. In addition, this storage container uses an existing body that is a standard product of a certain size and an existing cover that is formed in a size corresponding to the standard body, and is provided with a spacer that is inserted between the body and the cover. Since this is a simple configuration that only requires, an increase in cost can be suppressed.

  In the present invention, the spacer is preferably provided with a window that can be opened and closed. If a window provided in an existing cover is used, the window becomes higher by the height of the spacer and workability is deteriorated. Instead, by providing a window in the sbaser, the height of the window can be made the same as that of the window provided in the conventional cover. This improves the workability when inserting the welding wire and pulling out the welding wire from the drawing hole of the cover.

  In the present invention, it is preferable that the upper assembly is formed by combining the cover and the spacer, and the upper assembly is placed on the body. As a result, a standard upper body containing a welding wire delivered from a supplier only needs to be covered with a single upper assembly in which a cover and a spacer are combined, so that the assembly workability of the storage container is improved.

  In the configuration in which the upper assembly is mounted on the body, it is preferable that the upper assembly is detachably connected to the body by an annular connection band. Thereby, the upper assembly can be easily and reliably attached to the body.

  According to the present invention, the mounting position of the cover with respect to the body is increased by the height of the spacer. Therefore, when the welding wire is pulled up, the distance from the upper edge of the inner cylinder that is in sliding contact to the lead-out hole of the cover is the height of the spacer. It becomes longer by that amount, and a long space is secured between them, and the angle with respect to the horizontal plane of the drawer line connecting the upper end edge of the inner cylinder and the drawer hole of the cover is increased. As a result, even when a welding wire having a large wire diameter is pulled out, it can be pulled out smoothly without twisting. In addition, this storage container uses an existing body that is a standard product of a fixed size and an existing cover that is formed in a size corresponding to the standard body, and only inserts a spacer between the body and the cover. Because of this simple configuration, an increase in cost can be suppressed.

It is the schematic which shows the welding installation provided with the storage container of the welding wire which concerns on one Embodiment of this invention. It is the partially broken front view which shows the storage container. It is the partially broken front view which shows the storage container of the conventional welding wire. It is the partially broken front view which shows the storage container of the other conventional welding wire.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a welding wire 51 made of aluminum alloy is pulled out from the storage container K by the wire feeding device 26 and supplied to the welding robot 27, and welding to the welding object 28 made of aluminum alloy is performed.

  FIG. 2 shows details of the storage container K. In FIG. 2, the same components as those in FIG. The welding wire 51 housed in the housing container K is formed of a general A5356 aluminum welding material to a wire diameter of 2.0 mm with a circular cross section, and has a property of being easily twisted. The storage container K includes a standard body 2, an umbrella-shaped cover 8 having the same shape as that shown in FIG. 4, and a cylindrical spacer 11 inserted between the body 2 and the cover 8. I have. As will be described later, the cover 8 and the spacer 11 are joined together to form the upper assembly 20.

  The outer cylinder 3 and the inner cylinder 4 are cylinders having outer diameters R1, R2 and heights H1, H2 having the same constant dimensions as the standard product shown in FIG. A storage portion 12 for the welding wire 51 is formed therebetween. The inner cylinder 4 is disposed concentrically inside the outer cylinder 3, and the bottom wall portion 4 a of the inner cylinder 4 is fixed to the bottom plate portion 3 a of the outer cylinder 3 with a stopper (not shown). The cover 8 has a drawer hole 10 but does not have a window 7.

  Both the outer cylinder 3 and the inner cylinder 4 are formed in a bottomed cylindrical shape using paper such as cardboard, and the outer peripheral edge of the outer cylinder 3 is formed of a metal such as copper. The connecting flange 13 is provided. The connecting flange 13 is an existing one provided on the standard body 2. The cover 8 of FIG. 2 is formed in a truncated cone-shaped umbrella shape having a lower end opened using resin as a raw material, and has a L-shaped cross section formed of a metal such as copper at the opening peripheral end of the lower end. A flange 14 is provided. As shown in FIG. 4, the connecting flange 14 is an existing one provided in the conventional cover 8.

  The newly added spacer 11 shown in FIG. 2 is made of paper such as cardboard and is formed in a cylindrical shape having an outer diameter equal to the outer diameter of the outer cylinder 3 and the outer diameter of the opening end of the cover 3. A window 17 is provided at the location. The window 17 can be manually opened and closed by an opening / closing lid 19 that is opened and closed by a hinge 18. Connection flanges 21 and 22 made of metal such as copper are provided at the peripheral edges of the lower end and the upper end of the spacer 11, respectively.

  In a state where the coupling flange 14 of the cover 8 is overlapped with the coupling flange 22 at the upper end of the spacer 11, the coupling flanges 22 and 14 are coupled to each other by the annular coupling band 24 having the buckle 23, and the upper assembly 20 is It is formed. In addition, in the state where the connecting flange 21 at the lower end of the spacer 11 is overlapped with the connecting flange 13 of the body 2, the connecting flanges 21 and 13 are connected to each other by the annular connecting band 24 having the buckle 23. The upper assembly 20 is connected to the outer cylinder 3 in the body 2. Thereby, the storage container K composed of the body 2, the spacer 11, and the cover 8 is assembled.

  Unlike the body 2 which is returned to the body 2 supplier when all of the stored welding wires 51 are used, the upper assembly 20 is always placed at the welding site. Therefore, the storage container K having the three parts of the body 2, the spacer 11, and the cover 8 can be obtained by simply connecting the upper assembly 20 onto the new body 2 containing the welding wire 51, that is, in one connection operation. Can be assembled and workability is good.

  In the assembled storage container K, the window 17 is formed at a position on the spacer 11 in FIG. 2 which is the same height as the window 7 provided in the cover 8 in the conventional storage container K2 shown in FIG. After the upper assembly 20 including the spacer 11 and the cover 3 is connected to the new body 2 delivered from the supplier of the welding wire 51 by the connecting band 24 and the assembly of the storage container K is completed, the cover 8 A hand is put into the window 17 opened by opening the opening / closing lid 19, and the tip of the welding wire 51 is pulled out from the pull-out hole 10 of the cover 8, and the tip of the welding wire 51 is automatically welded as shown in FIG. It connects with the wire feeder 26 of an installation. Thus, when the setting of the welding wire 51 is completed, the welding wire 51 is sequentially pulled out from the storage container K by the wire feeding device 26 and supplied to the welding torch of the welding robot 27 at a predetermined speed, and MIG welding or TIG welding is performed. Is done automatically.

  In the storage container K shown in FIG. 2, the cylindrical spacer 11 is inserted between the body 2 and the cover 8, so that the attachment position of the cover 8 to the body 2 is increased by the height of the spacer 11. 2, the distance from the upper end edge of the inner cylinder 4 slidably contacted when the welding wire 51 is pulled up to the extraction hole 10 of the cover 8 is increased by the height of the spacer 11, and the upper end edge of the inner cylinder 4 and the 6 bar 8 The angle α with respect to the horizontal plane of the drawing line connecting the drawing holes 10 becomes large. As a result, a free long space where the welding wire 51 does not touch the surroundings is generated above the inner cylinder 4 and the welding wire 51 is not pulled up at a steep angle. Therefore, a large twist is unlikely to occur, and the small twist sufficiently recovers in a long space until reaching the extraction hole 10. Thereby, even if it is a case where the welding wire 51 with a big wire diameter is pulled out, the welding wire 51 without a twist can be smoothly pulled out from the drawer hole 10.

  The angle α is set to 71 ° in the embodiment. However, if the angle α is set within a range of 68 ° to 80 °, an effect of suppressing the twist of the welding wire 51 can be obtained. In order to set the angle α within this range, standard products including the outer cylinder 3 and the inner cylinder 4 having the outer diameter R1 = 660 mm, R2 = 450 mm, the height H1 = 750 mm, and H2 = 700 mm as described above. The spacer 11 to be attached to the body 2 needs to have a height H3 in the range of 200 to 400 mm.

  Further, the storage container K uses the existing body 2 that is a standard product of a certain size and the existing cover 8 that is formed in a size corresponding to the existing body 2 as it is, and is placed between the body 2 and the cover 8. Since it is a simple structure which only attaches the spacer 11 to insert, a raise of cost can be suppressed. On the other hand, when it is set as the structure which newly provides the outer cylinder which has the height which can set the angle (alpha) in the range of the above-mentioned 68 degrees-80 degrees, it is a fuselage of a size different from the body 2 of the existing standard goods. Needs to be newly made, and the cost increases due to an increase in the types of the body 2.

  Moreover, although the position of the cover 8 becomes high by inserting the spacer 11 between the trunk | drum 2 and the cover 8, the window 7 provided in the conventional cover 8 of FIG. 4 and the window in the spacer 11 of FIG. By making 17 the same height, the position of the window 17 is prevented from becoming too high. As a result, the efficiency of the operation of pulling out the welding wire 51 from the drawing hole 10 of the cover 8 by inserting a hand while looking through the window 17 having a height suitable for the operation is improved, and the remaining amount of the welding wire 51 is also confirmed. Cheap.

  Unlike the body 2 that is returned to the supplier of the welding wire 51 when all the stored welding wires 51 are used, the upper assembly 20 that combines the cover 8 and the spacer 11 is always provided at the welding site. Therefore, the assembly of the storage container K is completed by simply connecting the single upper assembly 20 to the new fuselage 2 containing the welding wire 51 delivered from the supplier at the welding site. Will improve.

  Further, since the upper assembly 20 is detachably connected to the body 2 by the annular connecting band 24, the upper assembly 20 can be easily and surely attached to the body 2 and the storage container K can be assembled quickly.

  The present invention is not limited to the above-described embodiment, and various additions, modifications, or deletions are possible within a scope that does not depart from the spirit of the present invention, and such modifications are also included in the scope of the present invention.

2 Body 3 Outer cylinder 4 Inner cylinder 8 Cover 10 Drawer hole 11 Svaser 12 Storage part 17 Window 20 Upper assembly 24 Connection band 51 Welding wire K Storage container

Claims (4)

A container for storing aluminum alloy wires used for welding,
A fuselage in which the wire is stored in a wound state in an annular storage portion between the inner cylinder and the outer cylinder;
An umbrella-shaped cover having a lead-out hole for pulling out the wire upward in the center;
A welding wire storage container comprising a cylindrical spacer inserted between the body and the cover.   The welding wire storage container according to claim 1, wherein the spacer is provided with an openable / closable window.   The welding wire storage container according to claim 1 or 2, wherein the cover and the spacer are combined to form an upper assembly, and the upper assembly is placed on the body. container.   4. The welding wire storage container according to claim 3, wherein the upper assembly is detachably connected to the body by an annular connecting band.

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