Welding electrode device for steel bar skeleton roll welding machine

Abstract

The present invention relates to a steel skeleton rolling welding machine, specifically a welding electrode device for a steel skeleton rolling welding machine. It includes an electrode seat, a welding electrode arm, and a water-cooled conductive electrode plate. The middle part of the welding electrode arm is hinged to the electrode seat through a rotating shaft. The upper end of the welding electrode arm is provided with a vertical connecting plate. The water-cooled conductive electrode plate is fixedly connected to the connecting plate through an insulating pad. The welding electrode plate is installed on the outer side of the water-cooled conductive electrode plate. The lower end of the water-cooled conductive electrode plate and the welding electrode plate are constrained by a fixed end, and the upper end of the welding electrode plate and the upper end of the water-cooled conductive electrode plate are constrained by a smooth surface. The bonding surface between the water-cooled conductive electrode plate and the welding electrode plate is an outwardly convex arc structure, and the material of the welding electrode plate is a thin plate. When the welding electrode plate of the present invention is heated and elongated, the upper end can be freely extended. Under the action of welding pressure, the welding electrode plate is tightly attached to the water-cooled conductive electrode plate, and no local heating phenomenon occurs, thereby increasing the service life of the welding electrode and reducing the production cost.

Description

Technical Field

[0001] The invention relates to a steel bar skeleton rolling welding machine, in particular to a welding electrode device of a steel bar skeleton rolling welding machine. Background Art

[0002] At present, the welding electrode device of the steel bar skeleton rolling welding machine is a flat plate structure, which is an authorized patent applied for by the applicant, and the patent number is 201310160387.2. Some problems are found in the actual use process. Figure 3 , Figure 4 If the thickness H of the electrode plate is too thick (generally greater than 16mm), a large amount of heat will be generated during the welding process. Since the two ends of the welding electrode plate are tightly fixed, when the welding electrode plate is elongated due to heat, the welding electrode plate will warp up, and the bonding surface with the water-cooled conductive electrode plate installed behind will be reduced, resulting in excessive local current and causing the original welding electrode plate to overheat and turn red. After the welding electrode plate is worn, it will be repaired by repair welding. During the repair, the welding electrode plate will also be deformed. When the two situations are superimposed, the contact surface is aggravated and deteriorated. The welding electrode plate is flat with a steel bar guide groove in the middle (such as Figure 2 As shown in the figure, the steel bar has a long friction path in the guide groove. When the pitch is slightly larger, it is easy to get out of the groove during welding. If the steel bar gets out of the groove, the machine needs to be stopped for processing, which affects production efficiency. Summary of the invention

[0003] The present invention aims to solve the above technical problems and provides a welding electrode device for a steel bar skeleton rolling welding machine to prevent the welding electrode plate from deforming and warping when heated, and to prevent the steel bar from falling off from the guide groove after the welding electrode plate warps.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A welding electrode device for a steel bar skeleton rolling welding machine comprises an electrode seat, a welding electrode arm, and a water-cooled conductive electrode plate. The middle part of the welding electrode arm is hinged to the electrode seat through a rotating shaft, a vertical connecting plate is provided at the upper end of the welding electrode arm, the water-cooled conductive electrode plate is fixedly connected to the connecting plate through an insulating pad, the welding electrode plate is installed on the outer side of the water-cooled conductive electrode plate, the lower end of the water-cooled conductive electrode plate and the welding electrode plate are constrained by a fixed end, and the upper end of the welding electrode plate and the upper end of the water-cooled conductive electrode plate are constrained by a smooth surface; the joint surface between the water-cooled conductive electrode plate and the welding electrode plate is an outwardly convex arc structure, and the material of the welding electrode plate is a thin plate.

[0006] Compared with the prior art, the present invention using the above technical solution has the following beneficial effects:

[0007] When the welding electrode plate is heated and elongated, the upper end can freely elongate, and the welding electrode plate is tightly attached to the water-cooled conductive electrode plate under the action of welding pressure, and no local heating phenomenon occurs, thereby increasing the service life of the welding electrode and reducing production costs.

[0008] Further, the optimization scheme of the present invention is:

[0009] The lower end of the water-cooled conductive electrode plate and the welding electrode plate are mounted with a fixing sleeve, the fixing sleeve body is a rectangular frame structure, the outer plate of the fixing sleeve body is an inclined structure, and the inner plate of the fixing sleeve body is installed with fixing bolts; the upper end of the welding electrode plate and the upper end of the water-cooled conductive electrode plate are mounted with a rectangular ring connector, the rectangular ring connector includes a U-shaped portion and a sealing plate, the cross-section of the U-shaped portion is circular, the sealing plate is welded to the port of the U-shaped portion, the sealing plate is installed with fixing bolts, and the bottom of the U-shaped portion is mounted with a sleeve, and the sleeve is in contact with the welding electrode plate.

[0010] The welding electrode plate is arc-shaped.

[0011] An arc-shaped conductive pad is installed between the water-cooled conductive electrode plate and the welding electrode plate.

[0012] The lower end of the welding electrode plate extends out of the lower end of the water-cooled conductive electrode plate.

[0013] The end face of the welding electrode plate is rectangular, and the outer long side of the end face is a straight structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the prior art;

[0015] Figure 2 yes Figure 1 Left view of;

[0016] Figure 3 It is a front view of a welding electrode plate of the prior art;

[0017] Figure 4 yes Figure 3 A top view of

[0018] Figure 5 is a front view of an embodiment of the present invention;

[0019] Figure 6 yes Figure 5 Left view of;

[0020] Figure 7 is a front view of a welding electrode plate according to an embodiment of the present invention;

[0021] Figure 8 yes Figure 7 Left view of;

[0022] Fig. 9is a front view of a conductive pad according to an embodiment of the present invention;

[0023] Fig.10 yes Fig. 9 Left view of;

[0024] Fig.11 is a front view of a water-cooled conductive electrode plate according to an embodiment of the present invention;

[0025] Fig.12 yes Fig.11 A top view of

[0026] Fig.13 yes Fig.11 Left view of;

[0027] Fig.14 is a front view of a fixing sleeve according to an embodiment of the present invention;

[0028] Fig.15 yes Fig.14 Bottom view of

[0029] Fig.16 yes Fig.14 Left view of;

[0030] Fig.17 is a front view of a rectangular ring connector according to an embodiment of the present invention;

[0031] Fig.18 yes Fig.17 Left view of;

[0032] Fig.19 yes Fig.17 A top view of

[0033] In the figure: electrode holder 1; welding electrode arm 2; connecting plate 3; insulating pad 4; water-cooled conductive electrode plate 5; conductive pad 6; welding electrode plate 7; fixing sleeve 8; fixing sleeve body 8-1; fastening bolt 8-1; rectangular ring connector 9; U-shaped part 9-1; sealing plate 9-2; fastening bolt 9-3; sleeve 9-4; rotating shaft 10. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0035] See also Figure 5 , Figure 6A welding electrode device for a steel bar skeleton rolling welding machine is composed of an electrode holder 1, a welding electrode arm 2, a connecting plate 3, an insulating pad 4, a water-cooled conductive electrode plate 5, a conductive pad 6, a welding electrode plate 7, a fixing sleeve 8 and a rectangular ring connector 9. The middle part of the welding electrode arm 2 is hingedly connected to the electrode holder 1 through a rotating shaft 10, a vertical connecting plate 3 is welded to the upper end of the welding electrode arm 2, an insulating pad 4 is installed on the outer side of the connecting plate 3, a water-cooled conductive electrode plate 5 is installed on the outer side of the edge pad 4, and the connecting plate 3, the insulating pad 4 and the water-cooled conductive electrode plate 5 are connected by bolts.

[0036] The outer side of the water-cooled conductive electrode plate 5 is provided with a welding electrode plate 7 ( Figure 7 , Figure 8 As shown in FIG. 1 ), the welding electrode plate 7 is arc-shaped, and the joint surface between the water-cooled conductive electrode plate 5 and the welding electrode plate 7 is an outwardly convex arc-shaped structure. The material of the welding electrode plate 7 is a thin steel plate with a thickness of 4-6 mm. After the thickness of the welding electrode plate 7 is reduced, the water-cooled conductive electrode plate 5 ( Fig.11 , Fig.12 , Fig.13 The arc of the welding electrode plate 7 is matched with the arc of the water-cooled conductive electrode plate 5 without much effort when installing, adjusting or replacing. The conductive pad 6 (shown) is installed between the water-cooled conductive electrode plate 5 and the welding electrode plate 7. Fig. 9 , Fig.10 As shown in the figure, the conductive pad 6 is arc-shaped and is a copper plate. The welding electrode plate 7 will cause wear and even wear through during the welding process. After the welding electrode plate 7 is worn through, the steel bar directly wears the water-cooled conductive electrode plate 5. The cost of replacing the water-cooled conductive electrode plate 5 is high. The conductive pad 6 prevents the steel bar from wearing the water-cooled conductive electrode plate 5 after the welding electrode plate 7 is worn through, thereby reducing the maintenance cost. The end face of the welding electrode plate 7 is rectangular, and the long side of the outer side of the end face is a straight structure. The welding electrode plate 7 cancels the guide groove to prevent the steel bar from falling off the guide groove. After adjusting the rib entrance, the friction path of the steel bar on the welding electrode plate 7 becomes shorter and can swing freely within a certain range, thereby extending the service life. The lower end of the welding electrode plate 7 extends out of the lower end of the water-cooled conductive electrode plate 5, increasing the length of the welding electrode plate 7 and using it in sections. Each welding electrode plate 7 can be used in sections for multiple times, shortening the time for replacing the welding electrode plate 7. After the welding electrode plate 7 is completely worn out, it is not repaired and is directly discarded.

[0037] The lower end of the water-cooled conductive electrode plate 5 is constrained by the fixed end with the welding electrode plate 7, and the upper end of the welding electrode plate 7 is constrained by the smooth surface with the upper end of the water-cooled conductive electrode plate 5. The lower end of the water-cooled conductive electrode plate 7 and the welding electrode plate 5 are fitted with a fixing sleeve 8, and the fixing sleeve 8 is composed of a fixing sleeve body 8-1 and a fastening bolt 8-2. The fixing sleeve body 8-1 is a rectangular frame structure, and the fixing sleeve body 8-1 is a steel plate welding component. The outer plate of the fixing sleeve body 8-1 is an inclined structure, and the inner plate of the fixing sleeve body 8-1 is installed with a fastening bolt 8-2. The fastening bolt 8-2 is connected to the inner plate of the fixing sleeve body 8-1 through a thread, and the fastening bolt 8-2 passes through the inner plate of the fixing sleeve body 8-1, and the welding electrode plate 7 is fixed to the water-cooled conductive electrode plate 5 through the fastening bolt 8-2. The upper end of the welding electrode plate 7 and the upper end of the water-cooled conductive electrode plate 5 are covered with a rectangular ring connector 9, which is composed of a U-shaped portion 9-1, a sealing plate 9-2, a fastening bolt 9-3 and a sleeve 9-4. The cross section of the U-shaped portion 9-1 is circular, and the sealing plate 9-2 is welded to the port of the U-shaped portion 9-1. The sealing plate 9-2 is installed with a fastening bolt 9-3, and the fastening bolt 9-3 is connected to the sealing plate 9-2 by threads. The fastening bolt 9-3 passes through the sealing plate 9-2, and the bottom of the U-shaped portion 9-1 is covered with a sleeve 9-4, and the sleeve 9-4 contacts the outer side of the welding electrode plate 5. When the arc-shaped welding electrode plate 7 is heated and stretched, the upper end can stretch freely. At the same time, because the thickness of the welding electrode plate 7 is very thin, it is tightly attached to the water-cooled conductive electrode plate 5 under the action of the welding pressure, and no local heating phenomenon occurs.

[0038] In the description of the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the description of this specification, the description of the term "one embodiment" or the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding electrode device for a steel bar skeleton rolling welding machine, comprising an electrode holder, a welding electrode arm, and a water-cooled conductive electrode plate, wherein the middle portion of the welding electrode arm is hinged to the electrode holder via a rotating shaft, a vertical connecting plate is provided at the upper end of the welding electrode arm, the water-cooled conductive electrode plate is fixedly connected to the connecting plate via an insulating pad, and a welding electrode plate is installed on the outer side of the water-cooled conductive electrode plate, characterized in that: The lower end of the water-cooled conductive electrode plate and the welding electrode plate are constrained by fixed ends, and the upper end of the welding electrode plate and the upper end of the water-cooled conductive electrode plate are constrained by smooth surfaces; the joint surface between the water-cooled conductive electrode plate and the welding electrode plate is an outwardly convex arc structure, and the material of the welding electrode plate is a thin plate; The lower end of the water-cooled conductive electrode plate and the welding electrode plate are mounted with a fixing sleeve, the fixing sleeve body is a rectangular frame structure, the outer plate of the fixing sleeve body is an inclined structure, and the inner plate of the fixing sleeve body is installed with fixing bolts; the upper end of the welding electrode plate and the upper end of the water-cooled conductive electrode plate are mounted with a rectangular ring connector, the rectangular ring connector includes a U-shaped portion and a sealing plate, the cross-section of the U-shaped portion is circular, the sealing plate is welded to the port of the U-shaped portion, the sealing plate is installed with fixing bolts, and the bottom of the U-shaped portion is mounted with a sleeve, and the sleeve is in contact with the welding electrode plate.

2. The welding electrode device of the steel bar skeleton seam welding machine according to claim 1 is characterized in that: The welding electrode plate is arc-shaped.

3. The welding electrode device of the steel bar skeleton seam welding machine according to claim 1 is characterized in that: An arc-shaped conductive pad is installed between the water-cooled conductive electrode plate and the welding electrode plate.

4. The welding electrode device of the steel bar skeleton seam welding machine according to claim 1 is characterized in that: The lower end of the welding electrode plate extends out of the lower end of the water-cooled conductive electrode plate.

5. The welding electrode device of the steel bar skeleton seam welding machine according to claim 1 or 2, characterized in that: The end face of the welding electrode plate is rectangular, and the outer long side of the end face is a straight structure.

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