Method for fully utilizing welding rods, novel welding rods and welding rod connecting device

Abstract

The present invention relates to a method for fully utilizing welding rods and a novel welding rod and welding rod connection device. To solve the problem of insufficient reliability of existing welding rod connection, a fully covered welding rod with a flux layer on the outer periphery of a metal welding core is used, one end of the fully covered welding rod has a metal sleeve for sleeved on the outer periphery of another fully covered welding rod end, or the fully covered welding rod sleeved with the metal sleeve is provided with a welding rod connector, the welding rod connector is a welding tongs fixed mouth with a vertical axis hole perpendicular to the plane where the jaws are located, a jaw socket for sleeved with the metal sleeve of the fully covered welding rod is provided with a vertical axis that is plugged with the vertical axis hole, and a pin for sleeved with the metal sleeve of the fully covered welding rod is provided at the front end of the jaw socket; or the welding rod connector includes a groove for supporting two butt welding rods and a welding wire feeding mechanism for conveying fusion welding wire and a magnetic welding piece or a grounding piece between the ends of the two butt welding rods. It has the advantages of good welding of front and rear welding rods and high reliability.

Description

Technical Field

[0001] The present invention relates to electric welding equipment, in particular to a method capable of fully utilizing welding rods and a novel welding rod and welding rod connecting device. Background Art

[0002] The existing welding rod is made of a metal welding core coated with flux on the periphery, wherein one end of the metal welding core is not coated with flux, and a section of the metal welding core on the head is exposed to the outside for electrification with the welding clamp. The existing electric welding clamp for arc welding needs to be manually fed downward as the welding rod melts during use, and moved backward to form a weld. However, in the end, there is always a section of the welding rod that is clamped by the welding clamp and cannot be used up, so it has to be thrown away, which is very regrettable. For this reason, the inventor has designed a "welding clamp that can fully utilize the welding rod", which includes a fixed nozzle and a movable nozzle with an insulating protective layer at the front end for clamping the welding rod, and is hinged to each other in the middle. The rear end of the fixed nozzle is sleeved on the front end of the clamp body with an insulating layer or an insulating clamp body through a thread, and the clamp body is provided with a longitudinal sliding cavity, and the longitudinal sliding cavity of the clamp body is longitudinally provided with a conductor-type connecting mechanism with the front end connected to the metal welding core of the welding rod and the rear end connected to the power cord, and the conductor-type connecting mechanism is provided with a manual longitudinal moving operating mechanism, and the rear end of the movable nozzle is provided with a handle insulated from its front end. Also designed this welding tongs with welding rod, that is, the metal core radial periphery is all coated with flux. This welding tongs and the welding rod with it can really accomplish the full utilization of the welding rod, but, in terms of reliability, still need to improve and enhance. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide a method with high reliability that can fully utilize welding rods. The present invention also relates to a new type of welding rod and welding rod connecting device for implementing the method.

[0004] To achieve the above-mentioned purpose, the method of the present invention that can fully utilize the welding rods is to use a fully enclosed welding rod with a flux layer coated on the outer circumference of the metal welding core, the outer circumference of one end of the fully enclosed welding rod is sleeved or equipped with a metal sleeve for sleeved on the outer circumference of the end of another fully enclosed welding rod, or the fully enclosed welding rod sleeved with the metal sleeve is equipped with a welding clamp and a welding rod connector, the welding clamp and the welding rod connector is a fixed mouth in the insulating protective sleeve of the welding clamp, or the fixed mouth and the movable mouth are provided with a vertical axis hole perpendicular to the plane where the jaws are located, a metal jaw socket for sleeved with the metal sleeve of the fully enclosed welding rod is provided with a vertical axis that is inserted into the vertical axis hole, and a pin column for sleeved with the metal sleeve of the fully enclosed welding rod is provided at the front end of the jaw socket; or the fully enclosed welding rod is equipped with an independent welding rod connector for butting against another fully enclosed welding rod, the independent welding rod connector includes a limiting groove for supporting two butting welding rods or the butting welding rod and the pin column, and a welding wire feeding mechanism for conveying fusion welding wire and magnetic welding parts or grounding parts between the butting ends.

[0005] When using a full-cover welding rod with a metal sleeve, the short welding rod end is extended and connected to the full-cover welding rod by inserting the metal sleeve, that is: the exposed metal core end of the full-cover welding rod or the exposed metal core end of the universal welding rod after removing either end of the metal sleeve and the coating is clamped on the universal welding clamp mouth for welding. After the welding rod is shortened, the metal sleeve of another full-cover welding rod is sleeved onto the end of the above-mentioned short welding rod, and the front and rear welding rods can be extended by spot welding the weldment or the bonding piece. When the full-covered welding rod with metal sleeve is used with the welding tongs and the connector, the pin of the welding tongs and the connector is plugged into the full-covered welding rod through the metal sleeve, and the short end of the full-covered welding rod is then extended by plugging and welding the full-covered welding rod through the metal sleeve; that is: it is only necessary to fasten the metal sleeve of the full-covered welding rod to the pin at the front end of the jaw socket, and the spot welding weldment or the grounding piece can make the pin end on the socket and the full-covered welding rod end be welded together to carry out electric welding work, and when the full-covered welding rod is completely burned and the last little bit of metal sleeve is left, the metal sleeve can be removed and thrown away, and then another metal sleeve of the full-covered welding rod is fastened to the pin at the front end of the jaw socket, and the spot welding weldment or the grounding piece can continue the electric welding work. When using metal sleeved fully covered welding rods, whether you use welding tongs equipped with welding rod connectors or old-style welding tongs, it is best not to use up the entire welding rod with a metal sleeve. Leave a small section of the welding rod head to connect another fully covered welding rod with a metal sleeve. The metal sleeved fully covered welding rod can be used flexibly. The length of the left section is determined according to the welding needs. Both long and short welding rod heads can be used to connect another metal sleeved fully covered welding rod. In this way, when using fully covered welding rods with metal sleeves, the metal sleeve will not be thrown away at all, and it will be completely melted into welding material. When the all-inclusive welding rod equipped with an independent welding rod connector is used, under the support limit of the independent welding rod connector, the short welding rod end is welded with the fusion welding wire sent by the independent welding rod connector to the all-inclusive welding rod end, or the short welding rod end is welded with the fusion welding wire sent into the punching hole in the metal sleeve of the all-inclusive welding rod through the independent welding rod connector; that is, the short welding rod end is welded with the first metal core end of the all-inclusive welding rod without the metal sleeve or the metal sleeve removed, or the universal The metal welding core of the welding rod is clamped on the universal welding tongs for welding. After the welding rod is welded short, any end of the full-cover welding rod without a metal sleeve or without a metal sleeve is placed in the limiting groove, and the metal welding core head of the full-cover welding rod is pressed against the welding wire through hole of the limiting groove of the welding wire feeding mechanism. The welding wire of the welding wire feeding mechanism is connected to the negative pole of the electric welding machine through a magnetic welding piece or a grounding piece. The short welding rod end extends to the limiting groove, and is welded with the second full-cover welding rod through the welding wire extending into the through hole of the limiting groove. When the welding tongs equipped with welding rod connectors use an independent welding rod connector, the pin column end at the front end of the welding tongs socket is placed in the limiting groove, and any end of a full-cover welding rod without a metal sleeve is placed in the limiting groove, and the pin column end and the full-cover welding rod end are welded reliably through the welding wire extending into the through hole of the limiting groove.Such a design has the advantages of good welding of the front and rear electrodes and reliable welding of the pin end and the electrode end, thus having the advantages of high reliability.

[0006] As an optimization, the metal sleeve is provided with an inner convexity in the middle for preventing the butt ends of the two fully covered welding rods from contacting each other; thus, when the front and rear welding rods are butt-welded, a suitable arc gap can be ensured, further improving the reliability of the front and rear welding rods.

[0007] The vertical axis hole is a circular vertical axis hole, the vertical axis is a circular vertical axis that slides with the circular vertical axis hole, and the jaw socket is made of carbon steel or other metal welding rod materials; the vertical axis extends from one side or both sides of the jaw socket; a tension spring is arranged between the vertical axis and the fixed mouth or the fixed mouth and the movable mouth.

[0008] The limiting groove is a U-shaped limiting groove with left and right opposite welding wire through holes. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels. The two welding wires respectively wound by the two welding wire reels respectively pass through their respective wire drawers and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove. By welding with two opposite welding wires, the welding of the two electrodes is more reliable.

[0009] The vertical axis hole is a circular vertical axis hole, and the vertical axis is a circular vertical axis that is slidably matched with the circular vertical axis hole. The jaw socket equipped with the slidably matched circular vertical axis can rotate 90 degrees or 180 degrees on the jaw vertical axis. The rotation of the socket is conducive to increasing the flexibility of the welding tongs during use, better use of the welding tongs, and adjustment of the required working angles of the jaw socket and the welding rod. The jaw socket is made of carbon steel or other metal welding rod materials, and the welding tongs are equipped with jaw sockets that match the models of various metal welding rods. It is conducive to the welding of the welding rod connector to the ends of carbon steel welding rods and other metal welding rods and the ends of the pins at the front end of the socket, which is more convenient, fast and reliable.

[0010] The limiting groove is a U-shaped limiting groove with left and right opposite welding wire through holes. The limiting groove is equipped with multiple types of welding rods that can be replaced. The size of the U-shaped limiting groove is determined by the size of the welding rod. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels. The two welding wires wound by the two welding wire reels pass through their respective wire pullers and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove. The limiting groove is conducive to accurately, quickly and reliably limiting the precise welding position of the two welding rod ends or the pin column end and the welding rod end. Through the precise welding of the two opposite welding wires, the welding of the two welding rod ends or the pin column end with the full-cover welding rod end is more reliable.

[0011] As an optimization, the inner protrusion is one or more inward punching holes punched inwardly; in this way, when using an independent electrode connector to weld electrodes, the welding wire extends through the inward punching holes to between the two metal welding cores, so as to better weld the electrodes.

[0012] The circular vertical axis hole is a circular inner hole of a copper sleeve embedded in a vertical hole of the welding clamp fixed nozzle, and the circular vertical axis is a circular copper axis fixed to the jaw socket; the tension spring controls and bites the rotation angle of the jaw socket at the front end of the welding clamp.

[0013] Two welding wires respectively wound out of two welding wire reels respectively bypass respective guide pulleys, pass through respective wire drawers, and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped groove.

[0014] As an optimization, the number of the inward punching holes is two and they are relatively distributed.

[0015] The inner ends of two wire pullers equipped with one-way wire clamps are respectively provided with card slots, and two outwardly extending U-shaped sliding arms of a Y-shaped pulling fork are respectively plugged into the two wire puller card slots; when the pulling fork is pushed toward the card slot end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps inwardly, and the two fusion welding wires respectively clamped by the two one-way wire clamps respectively penetrate into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove; when the pulling fork is pushed back toward the handle end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps outwardly, and the two one-way wire clamps respectively release the two fusion welding wires when being pushed outward, and return to the original positions on the outside together with the wire puller.

[0016] As an optimization, the left and right sides of the box with a magnetic base are respectively hinged to the left and right welding wire reels through the wire reel sliding shaft, the left and right guide pulleys are respectively hinged above the left and right welding wire reels, and the box is laterally slidably matched with the left and right cross-tube wire drawing tools through the left and right cross-rails or sliding sleeves on the inner sides of the left and right guide pulleys, and the two outwardly extended U-shaped sliding arms of the Y-shaped fork vertically slidably matched with the vertical sliding sleeves or sliding rails in the middle of the box are respectively vertically inserted and slidably matched with the inner end slots of the left and right cross-tube wire drawing tools, and the longitudinal U-shaped limiting groove fixed to the box is exposed from the longitudinal notch formed in the middle part of the upper part of the box, and the axes of the left and right one-way wire clamps respectively matched with the left and right cross-tube wire drawing tools are respectively opposite to the left and right welding wire through holes formed on the side walls of the longitudinal U-shaped limiting groove.

[0017] As an optimization, the left and right welding wires wound off the left and right welding wire reels respectively bypass the left and right guide pulleys respectively, pass through the left and right wire drawers respectively, and enter the left and right opposite welding wire through holes on the side walls of the U-shaped limiting groove respectively; the one-way wire clamp is a one-way clamp similar to the sliding mechanism of an automatic pencil lead.

[0018] At least the handle of the Y-shaped fork is exposed outside the box body or the Y-shaped fork is fixedly connected to the handle extending outside the box body, and a long strip opening for the reciprocating motion of the handle is formed on the box body; the Y-shaped fork is vertically arranged, and after manual upward movement, it is reset by gravity, or the Y-shaped fork 7 is arranged in any other direction, and is manually reset by moving forward and backward, or the Y-shaped fork is equipped with a reset spring; the left and right guide pulleys are respectively one for bypassing the welding wire on the outside or a pair for passing the welding wire in the middle.

[0019] The new type of welding rod used to implement the method of the present invention is a fully enclosed welding rod with a flux layer coated on the outer circumference of the metal welding core, the outer circumference of one end of the fully enclosed welding rod is sleeved or equipped with a metal sleeve for sleeved on the outer circumference of the end of another fully enclosed welding rod, or the fully enclosed welding rod sleeved with the metal sleeve is equipped with a welding clamp and a welding rod connector, the welding clamp and the welding rod connector is a welding clamp with a fixed mouth or a fixed mouth and a movable mouth in the insulating protective sleeve of the welding clamp, a vertical axis hole perpendicular to the plane where the jaws are located is formed, a metal jaw socket for sleeved with the metal sleeve of the fully enclosed welding rod is formed with a vertical axis that is inserted into the vertical axis hole, and a pin column for sleeved with the metal sleeve of the fully enclosed welding rod is provided at the front end of the jaw socket; or the fully enclosed welding rod is equipped with an independent welding rod connector for butting against another fully enclosed welding rod, and the independent welding rod connector includes a limiting groove for supporting two butting welding rods or a butt welding rod and a pin column, and a welding wire feeding mechanism for conveying fusion welding wire and a magnetic welding piece or a grounding piece to the butt ends. When using a full-cover welding rod with a metal sleeve, remove the metal sleeve at either end and the coating, and then clamp the exposed metal core end of the full-cover welding rod or the exposed metal core end of the universal welding rod on the universal welding pliers for welding. After the welding rod is shortened, put the metal sleeve of another full-cover welding rod onto the end of the short welding rod, and spot welding the weldment or the bonding piece can extend the two welding rods. When the full-cover welding rod equipped with an independent welding rod connector is in use, the metal welding core end of the first full-cover welding rod without a metal sleeve or with the metal sleeve removed, or the metal welding core of the universal welding rod is clamped on the universal welding jaws for welding. After the welding rod is shortened, any end of the full-cover welding rod without a metal sleeve or with the metal sleeve removed is placed in the limiting groove, and the metal welding core head of this end of the full-cover welding rod is pressed against the welding wire of the welding wire feeding mechanism toward the limiting groove. The welding wire of the welding wire feeding mechanism is connected to the negative pole of the electric welding machine through a magnetic welding piece or a grounding piece, and the shortened welding rod end extends into the limiting groove, and is welded to the second full-cover welding rod through the welding wire extended into the limiting groove.

[0020] The middle part of the metal sleeve is provided with an inner convexity for preventing the butt ends of two fully covered welding rods from contacting and maintaining an arc gap.

[0021] The vertical axis hole is a circular vertical axis hole, the vertical axis is a circular vertical axis that slides with the circular vertical axis hole, and the jaw socket is made of carbon steel or other metal welding rod materials; a tension spring is arranged between the vertical axis and the fixed mouth or the fixed mouth and the movable mouth; the vertical axis extends from one side or both sides of the jaw socket.

[0022] The limiting groove is a U-shaped limiting groove with left and right opposite welding wire through holes. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels. The two welding wires respectively wound out of the two welding wire reels pass through their respective wire drawers and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove, and welding is performed through the two opposite welding wires.

[0023] As an optimization, the metal sleeve is provided with an inner convexity in the middle for preventing the butt ends of the two fully covered welding rods from contacting each other; thus, when the front and rear welding rods are butt-welded, a suitable arc gap can be ensured, further improving the reliability of the front and rear welding rods.

[0024] The limiting groove is a U-shaped limiting groove with left and right opposite welding wire through holes. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels. The two welding wires respectively wound by the two welding wire reels respectively pass through their respective wire drawers and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove. By welding with two opposite welding wires, the welding of the two electrodes is more reliable.

[0025] As an optimization, the inner protrusion is one or more inward punching holes punched inwardly; in this way, when using an independent electrode connector to weld the electrode morning, the welding wire extends through the inward punching holes to between the two metal welding cores, so as to better weld the electrode.

[0026] Two welding wires respectively wound out of the two welding wire reels respectively bypass their own guide pulleys, pass through their own wire drawers, and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove.

[0027] As an optimization, the number of the inward punching holes is two and they are relatively distributed.

[0028] The inner ends of two wire pullers equipped with one-way wire clamps are respectively provided with card slots, and two outwardly extending U-shaped sliding arms of a Y-shaped pulling fork are respectively plugged into the two wire puller card slots; when the pulling fork is pushed toward the card slot end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps inwardly, and the two fusion welding wires respectively clamped by the two one-way wire clamps respectively penetrate into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove; when the pulling fork is pushed back toward the handle end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps outwardly, and the two one-way wire clamps respectively release the two fusion welding wires when being pushed outward, and return to the original positions on the outside together with the wire puller.

[0029] As an optimization, the left and right sides of the box with a magnetic base are respectively hinged to the left and right welding wire reels through the wire reel sliding shaft, the left and right guide pulleys are respectively hinged above the left and right welding wire reels, and the box is laterally slidably matched with the left and right cross-tube wire drawing tools through the left and right cross-rails or sliding sleeves on the inner sides of the left and right guide pulleys, and the two outwardly extended U-shaped sliding arms of the Y-shaped fork vertically slidably matched with the vertical sliding sleeves or sliding rails in the middle of the box are respectively vertically inserted and slidably matched with the inner end slots of the left and right cross-tube wire drawing tools, and the longitudinal U-shaped limiting groove fixed to the box is exposed from the longitudinal notch formed in the middle part of the upper part of the box, and the axes of the left and right one-way wire clamps respectively matched with the left and right cross-tube wire drawing tools are respectively opposite to the left and right welding wire through holes formed on the side walls of the longitudinal U-shaped limiting groove.

[0030] As an optimization, the left and right welding wires wound off the left and right welding wire reels respectively bypass the left and right guide pulleys respectively, pass through the left and right wire drawers respectively, and enter the left and right opposite welding wire through holes on the side walls of the U-shaped limiting groove respectively; the one-way wire clamp is a one-way clamp similar to the sliding mechanism of an automatic pencil lead.

[0031] At least the handle of the Y-shaped fork is exposed outside the box body or the Y-shaped fork is fixedly connected to the handle extending outside the box body, and a long strip opening for the reciprocating motion of the handle is formed on the box body; the Y-shaped fork is vertically arranged, and after manual upward movement, it is reset by gravity, or the Y-shaped fork 7 is arranged in any other direction, and is manually reset by moving forward and backward, or the Y-shaped fork is equipped with a reset spring; the left and right guide pulleys are respectively one for bypassing the welding wire on the outside or a pair for passing the welding wire in the middle.

[0032] The welding rod connecting device used to implement the method of the present invention is a welding clamp in which a fixed nozzle or a fixed nozzle and a movable nozzle in the insulating protective cover are provided with a vertical axis hole perpendicular to the plane where the jaws are located, a metal jaw socket for sleeve-connecting a full-cover welding rod metal sleeve is provided with a vertical axis that is plugged into the vertical axis hole, and a pin for sleeve-connecting the full-cover welding rod metal sleeve is provided at the front end of the jaw socket; or it includes a limiting groove for supporting two butt welding rods or a butt welding rod and a pin and a welding wire feeding mechanism for conveying fusion welding wire and a magnetic welding part or a grounding part between the butt ends. When in use, the metal welding core end of the first all-in-one welding rod without a metal sleeve or without a metal sleeve or the metal welding core of a universal welding rod is clamped on the universal welding jaws for welding. After the welding rod is welded short, any end of the all-in-one welding rod without a metal sleeve or without a metal sleeve is placed in the limiting groove, and the metal welding core head of the end of the all-in-one welding rod is pressed against the welding wire of the welding wire feeding mechanism toward the limiting groove. The welding wire of the welding wire feeding mechanism is connected to the negative pole of the electric welding machine through a magnetic welding piece or a grounding piece. The short welding rod end extends to the limiting groove, and is welded with the second all-in-one welding rod through the welding wire extending into the limiting groove. Such a design has the advantages of good welding of the front and rear welding rods and strong reliability.

[0033] As an optimization, the vertical axis hole is a circular vertical axis hole, the vertical axis is a circular vertical axis that slides with the circular vertical axis hole, and the jaw socket is made of carbon steel or other metal welding rod materials; the vertical axis extends from one side or both sides of the jaw socket; a tension spring is arranged between the vertical axis and the fixed mouth or the fixed mouth and the movable mouth.

[0034] The limiting groove is a U-shaped limiting groove with left and right opposite welding wire through holes. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels. The two welding wires respectively wound by the two welding wire reels respectively pass through their respective wire drawers and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove. By welding with two opposite welding wires, the welding of the two electrodes is more reliable.

[0035] As an optimization, the circular vertical axis hole is a circular inner hole of a solid copper sleeve embedded in the vertical hole of the fixed nozzle of the welding clamp, and the circular vertical axis is a circular copper axis fixed to the jaw socket; the tension spring controls and bites the rotation angle of the jaw socket at the front end of the welding clamp.

[0036] Two welding wires respectively wound out of the two welding wire reels respectively bypass their own guide pulleys, pass through their own wire drawers, and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove.

[0037] As an optimization, the inner ends of the two wire pullers equipped with one-way wire clamps are respectively provided with slots, and the two outwardly extending U-shaped sliding arms of a Y-shaped pulling fork are respectively plugged into the two wire puller slots; when the pulling fork is pushed toward the slot end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps inward, and the two fusion welding wires respectively clamped by the two one-way wire clamps are respectively inserted into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove; when the pulling fork is pushed back toward the handle end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps outward, and the two one-way wire clamps respectively release the two fusion welding wires when being pushed outward, and return to the original positions on the outside together with the wire puller.

[0038] As an optimization, the left and right sides of the box with a magnetic base are respectively hinged to the left and right welding wire reels through the wire reel sliding shaft, the left and right guide pulleys are respectively hinged above the left and right welding wire reels, and the box is laterally slidably matched with the left and right cross-tube wire drawing tools through the left and right cross-rails or sliding sleeves on the inner sides of the left and right guide pulleys, and the two outwardly extended U-shaped sliding arms of the Y-shaped fork vertically slidably matched with the vertical sliding sleeves or sliding rails in the middle of the box are respectively vertically inserted and slidably matched with the inner end slots of the left and right cross-tube wire drawing tools, and the longitudinal U-shaped limiting groove fixed to the box is exposed from the longitudinal notch formed in the middle part of the upper part of the box, and the axes of the left and right one-way wire clamps respectively matched with the left and right cross-tube wire drawing tools are respectively opposite to the left and right welding wire through holes formed on the side walls of the longitudinal U-shaped limiting groove.

[0039] As an optimization, the left and right welding wires wound off the left and right welding wire reels respectively bypass the left and right guide pulleys respectively, pass through the left and right wire drawers respectively, and enter the left and right opposite welding wire through holes on the side walls of the U-shaped limiting groove respectively; the one-way wire clamp is a one-way clamp similar to the sliding mechanism of an automatic pencil lead.

[0040] At least the handle of the Y-shaped fork is exposed outside the box body, or the Y-shaped fork is fixedly connected to a handle extending outside the box body, and a long strip opening for the handle to reciprocate is formed on the box body; the Y-shaped fork is vertically arranged, and after manual upward movement, it is reset by gravity, or the Y-shaped fork is arranged in any other direction, and is manually reset by moving forward and backward, or the Y-shaped fork is equipped with a reset spring; the left and right guide pulleys are respectively one that bypasses the welding wire on the outside or a pair that passes through the welding wire in the middle.

[0041] After adopting the above technical scheme, the method of the present invention can fully utilize the welding rods and the novel welding rods and welding rod connecting device have the advantages of good welding of the front and rear welding rods and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 and 2 They are respectively the front view and the cross-sectional structure schematic diagrams of the novel welding rod used to implement the method of the present invention; Figure 3 The present invention is a schematic structural diagram of a first embodiment of a welding clamp part including a welding rod connector and a welding clamp for realizing the method of the present invention. Figure 4 and 5 They are Figure 3 Schematic diagram of the top and side views of the welding clamp with welding rod connector jaws and socket. Figure 6 It is a schematic structural diagram of a second embodiment of a welding clamp part of a welding clamp equipped with a welding rod connector for realizing the method of the present invention. Figure 7 They are Figure 6 A schematic diagram of the side view of the structure of the welding clamp with the welding rod connector jaws and socket part. Figure 8 It is a structural schematic diagram of a first embodiment of an independent welding rod connecting device for implementing the method of the present invention. Fig. 9 It is a schematic structural diagram of a second embodiment of an independent welding rod connecting device for implementing the method of the present invention. DETAILED DESCRIPTION

[0043] The method of the present invention for fully utilizing welding rods is to use a fully enclosed welding rod with a flux layer coated on the outer circumference of a metal welding core, the outer circumference of one end of the fully enclosed welding rod is sleeved or equipped with a metal sleeve for sleeved on the outer circumference of another fully enclosed welding rod end, or the fully enclosed welding rod sleeved with the metal sleeve is equipped with a welding clamp and a welding rod connector, the welding clamp and the welding rod connector is a welding clamp with a fixed mouth or a fixed mouth and a movable mouth in the insulating protective sleeve of the welding clamp, a vertical axis hole perpendicular to the plane where the jaws are located is formed on a metal jaw socket for sleeved the metal sleeve of the fully enclosed welding rod, and a pin column for sleeved the metal sleeve of the fully enclosed welding rod is formed on the front end of the jaw socket; or the fully enclosed welding rod is equipped with an independent welding rod connector for butting against another fully enclosed welding rod, the independent welding rod connector includes a limiting groove for supporting two butting welding rods or a butt welding rod and a pin column, and a welding wire feeding mechanism for conveying fusion welding wire and a magnetic welding piece or a grounding piece to the butt ends.

[0044] When using a full-cover welding rod with a metal sleeve, remove any end of the metal sleeve and the coating, and then clamp the exposed metal core end of the full-cover welding rod or the exposed metal core end of the universal welding rod to the universal welding pliers for welding. After the welding rod is welded short, put the metal sleeve of another full-cover welding rod on the end of the above-mentioned short welding rod, and spot welding weldment or grounding piece can extend the front and rear welding rods. When using a full-cover welding rod with a metal sleeve with a welding pliers equipped with a connector, just put the metal sleeve of the full-cover welding rod on the pin column at the front end of the jaw socket, and spot welding weldment or grounding piece can make the pin column end on the socket and the full-cover welding rod end be welded together. When performing electric welding, when the fully-enclosed electrode has completely burned through the entire electrode and only a little bit of the metal sleeve is left, the metal sleeve can be removed and thrown away, and then the metal sleeve of another fully-enclosed electrode can be fixed onto the pin at the front end of the jaw socket, and the spot welding work on the weldment or the grounding piece can be continued; when the welding tongs equipped with the electrode connector use an independent electrode connector, the pin end at the front end of the welding tongs socket is placed in the limiting groove, and any end of a fully-enclosed electrode without a metal sleeve is placed in the limiting groove, and the pin end and the fully-enclosed electrode end are reliably welded by welding the welding wire extending into the through hole of the limiting groove.

[0045] The metal sleeve is provided with an inner convexity in the middle for preventing the butt ends of two fully covered welding rods from contacting each other; thus, when the front and rear welding rods are butt-welded, a suitable arc gap can be ensured, further improving the reliability of the front and rear welding rods.

[0046] The vertical axis hole is a circular vertical axis hole, the vertical axis is a circular vertical axis that slides with the circular vertical axis hole, and the jaw socket is made of carbon steel or other metal welding rod materials; the vertical axis extends from one side or both sides of the jaw socket; a tension spring is arranged between the vertical axis and the fixed mouth or the fixed mouth and the movable mouth.

[0047] The limiting groove is a U-shaped limiting groove with left and right opposite welding wire through holes. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels. The two welding wires respectively wound by the two welding wire reels respectively pass through their respective wire drawers and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove. By welding with two opposite welding wires, the welding of the two electrodes is more reliable.

[0048] The inner protrusion is one or more inward punching holes punched inwardly; in this way, when using an independent electrode connector to weld the electrode in the morning, the welding wire extends through the inward punching holes to between the two metal welding cores, so as to better weld the electrode.

[0049] The circular vertical axis hole is a circular inner hole of a copper sleeve embedded in a vertical hole of the welding clamp fixed nozzle, and the circular vertical axis is a circular copper axis fixed to the jaw socket; the tension spring controls and bites the rotation angle of the jaw socket at the front end of the welding clamp.

[0050] Two welding wires respectively wound out of the two welding wire reels respectively bypass their own guide pulleys, pass through their own wire drawers, and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove.

[0051] The number of the inward punching holes is two and they are relatively distributed.

[0052] The inner ends of two wire pullers equipped with one-way wire clamps are respectively provided with card slots, and two outwardly extending U-shaped sliding arms of a Y-shaped pulling fork are respectively plugged into the two wire puller card slots; when the pulling fork is pushed toward the card slot end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps inwardly, and the two fusion welding wires respectively clamped by the two one-way wire clamps respectively penetrate into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove; when the pulling fork is pushed back toward the handle end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps outwardly, and the two one-way wire clamps respectively release the two fusion welding wires when being pushed outward, and return to the original positions on the outside together with the wire puller.

[0053] The left and right sides of the box with a magnetic base are respectively hinged to the left and right welding wire reels through the wire reel sliding shaft, the left and right guide pulleys are respectively hinged above the left and right welding wire reels, the box is laterally slidably matched with the left and right cross-tube wire drawing tools through the left and right transverse rails or sliding sleeves on the inner sides of the left and right guide pulleys, and the two outwardly extended U-shaped sliding arms of the Y-shaped fork vertically slidably matched with the vertical sliding sleeves or sliding rails in the middle of the box are vertically inserted and slidably matched with the inner end slots of the left and right cross-tube wire drawing tools, and the longitudinal U-shaped limiting groove fixed to the box is exposed from the longitudinal notch formed in the middle part of the upper part of the box, and the axes of the left and right one-way wire clamps respectively matched with the left and right cross-tube wire drawing tools are respectively opposite to the left and right welding wire through holes formed on the side walls of the longitudinal U-shaped limiting groove. The left and right welding wires respectively wound off the left and right welding wire reels respectively pass around the left and right guide pulleys respectively, pass through the left and right wire drawers respectively, and penetrate into the left and right opposite welding wire through holes on the side walls of the U-shaped limiting groove respectively; the one-way wire clamp is a one-way clamp similar to the sliding mechanism of an automatic pencil lead.

[0054] At least the handle of the Y-shaped fork is exposed outside the box body or the Y-shaped fork is fixedly connected to the handle extending outside the box body, and a long strip opening for the reciprocating motion of the handle is formed on the box body; the Y-shaped fork is vertically arranged, and after manual upward movement, it is reset by gravity, or the Y-shaped fork 7 is arranged in any other direction, and is manually reset by moving forward and backward, or the Y-shaped fork is equipped with a reset spring; the left and right guide pulleys are respectively one for bypassing the welding wire on the outside or a pair for passing the welding wire in the middle.

[0055] As shown in Figures 1-2, the new welding rod used to implement the method of the present invention is a full-cover welding rod 10 with a flux layer on the outer periphery of a metal core 1, and a metal sleeve 2 is sleeved on the outer periphery of one end of the full-cover welding rod 10 or is provided for sleeved on the outer periphery of the end of another full-cover welding rod 10. The metal sleeve 2 is provided with an inner convexity in the middle part for preventing the butt ends of two full-cover welding rods 10 from contacting and maintaining an arc gap; the inner convexity is one or more inward punched holes 20 punched inward; the inward punched holes 20 are two relatively distributed.

[0056] like Figure 3-5 As shown, the new type of welding rod used to implement the method of the present invention can also be a full-cover welding rod 10 connected to the metal sleeve 2, equipped with a welding clamp and a welding rod connector. The welding clamp and the welding rod connector are a fixed nozzle 11 in the insulating protective sleeve of the welding clamp, which is provided with a vertical axis hole 12 perpendicular to the plane where the jaws are located, and a metal jaw socket 13 used for sleeved with the metal sleeve 2 of the full-cover welding rod is provided with a vertical axis 14 that is plugged into the vertical axis hole 12, and the front end of the jaw socket 13 is provided with a pin 15 for sleeved with the metal sleeve 2 of the full-cover welding rod.

[0057] The vertical axis hole 12 is a circular vertical axis hole 12, the vertical axis 14 is a circular vertical axis 14 that slides with the circular vertical axis hole 12, and the jaw socket 13 is made of carbon steel or other metal welding rod materials; the vertical axis 14 extends from one side of the jaw socket 13; the circular vertical axis hole 12 is a circular inner hole of the welding clamp fixed nozzle 11, in which a solid copper sleeve 16 is embedded, and the circular vertical axis 14 is a circular copper axis fixed to the jaw socket 13.

[0058] like Figure 6 and 7 As shown, the fully enclosed welding rod 10 connected to the metal sleeve 2 is equipped with a welding clamp and a welding rod connector. Figure 3-5 The difference is that a vertical axis hole 12 perpendicular to the plane where the jaws are located is formed on the fixed nozzle and the movable nozzle in the insulating protective cover of the welding clamp, and the vertical axis 14 extends from both sides of the jaw socket 13; a tension spring is arranged between the vertical axis and the fixed nozzle or the fixed nozzle and the movable nozzle; the tension spring controls and bites the rotation angle of the jaw socket at the front end of the welding clamp.

[0059] like Figure 8 As shown, the welding rod connecting device used to implement the method of the present invention is a fully covered welding rod with a flux layer coated on the outer circumference of the metal core. The fully covered welding rod is equipped with an independent welding rod connector for butting against another fully covered welding rod. The independent welding rod connector includes a limiting groove 3 for supporting the two butting welding rods and a welding wire feeding mechanism for conveying the fusion welding wire 4 and a magnetic welding part or a grounding part between the ends of the two butt welding rods.

[0060] The limiting groove 3 is a U-shaped limiting groove with left and right opposite welding wire through holes. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels 40. The two welding wires 4 respectively wound by the two welding wire reels 40 respectively pass through their respective wire drawers 6 and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove 3. The two welding wires 4 respectively wound by the two welding wire reels 40 respectively bypass their respective guide pulleys 5 and pass through their respective wire drawers 6 and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove 3. The inner ends of the two wire drawing tools 6 equipped with one-way wire clamps are respectively formed with card slots 61, and the two outwardly extending U-shaped sliding arms of a Y-shaped fork 7 are respectively plugged into the two wire drawing tool card slots 61; when the fork 7 is pushed toward the end of the Y-shaped fork card slot 61, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire drawing tools 6 and the two one-way wire clamps inward, and the two fusion welding wires 4 respectively clamped by the two one-way wire clamps are respectively inserted into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove 3, and when the fork is pushed back toward the handle end of the Y-shaped fork 7, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire drawing tools 6 and the two one-way wire clamps outward, and when the two one-way wire clamps are pushed outward, the two fusion welding wires are respectively released, and return to the original positions on the outside together with the wire drawing tool 6.

[0061] The left and right sides of the box body 8 with a magnetic base are respectively hinged to the left and right welding wire reels 40 through the wire reel sliding shaft, the box body 8 is respectively hinged to the left and right guide pulleys above the left and right welding wire reels 40, the box body 8 is respectively equipped with the left and right transverse tube type wire drawing tools 6 on the inner sides of the left and right guide pulleys through the left and right transverse sliding sleeves 60 or the sliding rails, and the two outwardly extending U-shaped sliding arms of the Y-shaped fork 7 vertically slidably matched with the vertical sliding sleeves 70 or the sliding rails in the middle of the box body 8 are respectively vertically inserted and slid into the inner end grooves of the left and right transverse tube type wire drawing tools 6, the longitudinal U-shaped limiting groove 3 fixedly installed in the box body 8 is exposed from the longitudinal notch formed in the middle part of the upper part of the box body 8, and the axes of the left and right one-way wire clamps respectively fitted with the left and right transverse tube type wire drawing tools 6 are respectively opposite to the left and right welding wire through holes formed on the side walls of the longitudinal U-shaped limiting groove 3. The left and right welding wires 4 respectively wound off the left and right welding wire reels 40 respectively bypass the left and right guide pulleys respectively and pass through the left and right wire drawers 6 respectively and penetrate into the welding wire through holes on the left and right opposite side walls of the U-shaped limiting groove 3 respectively; the one-way wire clamp is a one-way clamp similar to the sliding mechanism of an automatic pencil lead.

[0062] At least the handle of the Y-shaped fork 7 is exposed outside the box or the Y-shaped fork 7 is fixedly connected to a handle extending outside the box, and a long strip opening for the handle to reciprocate is formed on the box 8; the Y-shaped fork 7 is arranged vertically, and after manual upward movement, it is reset by gravity, or the Y-shaped fork 7 is arranged in any other direction, and is reset manually by moving forward and backward. The left and right guide pulleys are respectively one of which is outside to bypass the welding wire 4. The magnetic base is a permanent magnet 88 fixed inside (or outside) the bottom of the box 8.

[0063] like Fig. 9 As shown, the new welding rod used to implement the method of the present invention is the same as the above Figure 8 The difference is that the Y-shaped fork 7 is equipped with a return spring 9 between its handle and the vertical sliding sleeve 70. The left and right guide pulleys are a pair of welding wires 4 passing through the middle.

[0064] When using a full-cover welding rod with a metal sleeve, the short welding rod end is extended and connected to the full-cover welding rod by inserting the metal sleeve, that is: the exposed metal core end of the full-cover welding rod or the exposed metal core end of the universal welding rod after removing either end of the metal sleeve and the coating is clamped on the universal welding clamp mouth for welding. After the welding rod is shortened, the metal sleeve of another full-cover welding rod is sleeved onto the end of the above-mentioned short welding rod, and the front and rear welding rods can be extended by spot welding the weldment or the bonding piece. When the full-covered welding rod with metal sleeve is used with the welding tongs and the connector, the pin of the welding tongs and the connector is plugged into the full-covered welding rod through the metal sleeve, and the short end of the full-covered welding rod is then extended by plugging and welding the full-covered welding rod through the metal sleeve; that is: it is only necessary to fasten the metal sleeve of the full-covered welding rod to the pin at the front end of the jaw socket, and the spot welding weldment or the grounding piece can make the pin end on the socket and the full-covered welding rod end be welded together to carry out electric welding work, and when the full-covered welding rod is completely burned and the last little bit of metal sleeve is left, the metal sleeve can be removed and thrown away, and then another metal sleeve of the full-covered welding rod is fastened to the pin at the front end of the jaw socket, and the spot welding weldment or the grounding piece can continue the electric welding work. When using metal sleeved fully covered welding rods, whether you use welding tongs equipped with welding rod connectors or old-style welding tongs, it is best not to use up the entire welding rod with a metal sleeve. Leave a small section of the welding rod head to connect another fully covered welding rod with a metal sleeve. The metal sleeved fully covered welding rod can be used flexibly. The length of the left section is determined according to the welding needs. Both long and short welding rod heads can be used to connect another metal sleeved fully covered welding rod. In this way, when using fully covered welding rods with metal sleeves, the metal sleeve will not be thrown away at all, and it will be completely melted into welding material. When the all-inclusive welding rod equipped with an independent welding rod connector is used, under the support limit of the independent welding rod connector, the short welding rod end is welded with the fusion welding wire sent by the independent welding rod connector to the all-inclusive welding rod end, or the short welding rod end is welded with the fusion welding wire sent into the punching hole in the metal sleeve of the all-inclusive welding rod through the independent welding rod connector; that is, the short welding rod end is welded with the first metal core end of the all-inclusive welding rod without the metal sleeve or the metal sleeve removed, or the universal The metal welding core of the welding rod is clamped on the universal welding tongs for welding. After the welding rod is welded short, any end of the full-cover welding rod without a metal sleeve or without a metal sleeve is placed in the limiting groove, and the metal welding core head of the full-cover welding rod is pressed against the welding wire through hole of the limiting groove of the welding wire feeding mechanism. The welding wire of the welding wire feeding mechanism is connected to the negative pole of the electric welding machine through a magnetic welding piece or a grounding piece. The short welding rod end extends to the limiting groove, and is welded with the second full-cover welding rod through the welding wire extending into the through hole of the limiting groove. When the welding tongs equipped with welding rod connectors use an independent welding rod connector, the pin column end at the front end of the welding tongs socket is placed in the limiting groove, and any end of a full-cover welding rod without a metal sleeve is placed in the limiting groove, and the pin column end and the full-cover welding rod end are welded reliably through the welding wire extending into the through hole of the limiting groove.

Claims

1. A method for fully utilizing welding rods, characterized in that A fully encapsulated welding rod with a metal welding core coated with a flux layer on the outer circumference, the outer circumference of one end of the fully encapsulated welding rod is sleeved or equipped with a metal sleeve for sleeved on the outer circumference of the end of another fully encapsulated welding rod; or the fully encapsulated welding rod sleeved with the metal sleeve is equipped with a welding clamp and a welding rod connector, the welding clamp and the welding rod connector is a fixed mouth in the insulating protective sleeve of the welding clamp, or the fixed mouth and the movable mouth are provided with a vertical axis hole perpendicular to the plane where the jaws are located, the metal jaw socket for sleeved with the metal sleeve of the fully encapsulated welding rod is provided with a vertical axis that is inserted into the vertical axis hole, and the front end of the jaw socket is provided with a pin for sleeved with the metal sleeve of the fully encapsulated welding rod; or the fully encapsulated welding rod is equipped with an independent welding rod connector for connecting with another fully encapsulated welding rod, and the independent welding rod connector includes a vertical axis hole that is perpendicular to the plane where the jaws are located, and a vertical axis hole that is inserted into the vertical axis hole is provided on the metal jaw socket for sleeved with the metal sleeve of the fully encapsulated welding rod. A limiting groove supporting two butt welding rods or a butt welding rod and a pin, and a welding wire feeding mechanism for conveying the fusion welding wire and a magnetic welding part or a grounding part to the butt end; the limiting groove is a U-shaped limiting groove with left and right opposite fusion welding wire through holes, and the welding wire feeding mechanism is a magnetic base equipped with two fusion welding wire reels, and the two fusion welding wires respectively wound out of the two fusion welding wire reels respectively pass through their respective wire drawers and respectively penetrate into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove, and are welded by the two opposite fusion welding wires; the two fusion welding wires respectively wound out of the two fusion welding wire reels respectively bypass their respective guide pulleys, pass through their respective wire drawers and respectively penetrate into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove; When the full-cover welding rod with metal sleeve is used, the short welding rod end is connected to the full-cover welding rod by inserting and welding the metal sleeve; the exposed metal welding core end of the full-cover welding rod or the exposed metal welding core end of the universal welding rod after removing any end of the metal sleeve and removing the coating is clamped on the universal welding pliers to perform welding, and after the welding rod is welded short, the metal sleeve of another full-cover welding rod is sleeved on the end of the short welding rod, and the front and rear welding rods can be connected by spot welding the weldment or the bonding piece; When the welding clamp with connector and the all-inclusive electrode with metal sleeve are used, the pin of the welding clamp with connector is inserted into the all-inclusive electrode through the metal sleeve, and the short end of the all-inclusive electrode is then inserted and welded through the metal sleeve to extend the all-inclusive electrode; the vertical axis hole is a circular vertical axis hole, and the vertical axis is a circular vertical axis that is slidably matched with the circular vertical axis hole; When the welding tongs equipped with welding rod connectors use an independent welding rod connector, the short welding rod end and the fusion welding wire fed to the full-covered welding rod end through the independent welding rod connector are welded together under the support and limit of the independent welding rod connector; or the short welding rod end and the fusion welding wire fed into the punched hole in the metal casing of the full-covered welding rod through the independent welding rod connector are welded together.

2. The method according to claim 1, characterized in that The metal sleeve is provided with an inner convexity in the middle part for preventing the butt ends of two fully covered welding rods from contacting and maintaining the arc gap; The jaw socket is made of carbon steel or other metal welding rod materials; a tension spring is arranged between the vertical shaft and the fixed nozzle or between the fixed nozzle and the movable nozzle; the vertical shaft extends from one side or both sides of the jaw socket; Two welding wires respectively wound out of the two welding wire reels respectively bypass their own guide pulleys, pass through their own wire drawers, and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove.

3. The method according to claim 2, characterized in that The inner protrusion is one or more inward punched holes punched inward; The circular vertical axis hole is a circular inner hole of a copper sleeve embedded in the vertical hole of the welding clamp fixed nozzle, and the circular vertical axis is a circular copper axis fixed to the jaw socket; the tension spring controls and bites the rotation angle of the jaw socket at the front end of the welding clamp; The inner ends of two wire pullers equipped with one-way wire clamps are respectively provided with card slots, and two outwardly extending U-shaped sliding arms of a Y-shaped pulling fork are respectively plugged into the two wire puller card slots; when the pulling fork is pushed toward the card slot end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps inwardly, and the two fusion welding wires respectively clamped by the two one-way wire clamps respectively penetrate into the left and right opposite fusion welding wire through holes of the U-shaped limiting groove; when the pulling fork is pushed back toward the handle end of the Y-shaped pulling fork, the two outwardly extending U-shaped sliding arms respectively squeeze the two wire pullers and the two one-way wire clamps outwardly, and the two one-way wire clamps respectively release the two fusion welding wires when being pushed outward, and return to the original positions on the outside together with the wire puller.

4. The method according to claim 3, characterized in that The inward punching holes are two relatively distributed; The left and right sides of the box with a magnetic base are respectively hinged to the left and right welding wire reels through the wire reel sliding shaft, the left and right guide pulleys are respectively hinged above the left and right welding wire reels, the box is laterally slidably matched with the left and right cross-tube wire drawing tools through the left and right transverse rails or sliding sleeves on the inner sides of the left and right guide pulleys, and the two outwardly extended U-shaped sliding arms of the Y-shaped fork vertically slidably matched with the vertical sliding sleeves or sliding rails in the middle of the box are vertically inserted and slidably matched with the inner end slots of the left and right cross-tube wire drawing tools, and the longitudinal U-shaped limiting groove fixed to the box is exposed from the longitudinal notch formed in the middle part of the upper part of the box, and the axes of the left and right one-way wire clamps respectively matched with the left and right cross-tube wire drawing tools are respectively opposite to the left and right welding wire through holes formed on the side walls of the longitudinal U-shaped limiting groove.

5. The method according to claim 4, characterized in that The left and right welding wires respectively wound by the left and right welding wire reels respectively pass through the left and right guide pulleys respectively, and respectively pass through the left and right wire pullers and respectively penetrate into the left and right welding wire through holes on the side walls of the U-shaped limiting groove; the one-way wire clamp is a one-way clamp of the automatic pencil lead sliding mechanism; At least the handle of the Y-shaped fork is exposed outside the box body, or the Y-shaped fork is fixedly connected to a handle extending outside the box body, and a long strip opening for the handle to reciprocate is formed on the box body; the Y-shaped fork is vertically arranged, and after manual upward movement, it is reset by gravity, or the Y-shaped fork is arranged in any other direction, and is manually reset by moving forward and backward, or the Y-shaped fork is equipped with a reset spring; the left and right guide pulleys are respectively one that bypasses the welding wire on the outside or a pair that passes through the welding wire in the middle.

6. A welding rod connecting device for implementing the method according to claim 1, characterized in that A vertical axis hole perpendicular to the plane where the jaws are located is formed on the fixed mouth or the fixed mouth and the movable mouth in the insulating protective cover of the welding tongs, a vertical axis that is plugged into the vertical axis hole is formed on the metal jaw socket for sleeve-fitting the metal sleeve of the full-cover welding rod, and a pin for sleeve-fitting the metal sleeve of the full-cover welding rod is provided at the front end of the jaw socket; or a limiting groove for supporting two butt welding rods or butt welding rods and pins and a welding wire feeding mechanism for conveying fusion welding wire and magnetic welding parts or grounding parts between butt ends; When in use, the metal welding core end of the first full-covered welding rod without a metal sleeve or with the metal sleeve removed, or the metal welding core of the universal welding rod is clamped on the universal welding jaws for welding. After the welding rod is shortened, any end of the full-covered welding rod without a metal sleeve or with the metal sleeve removed is placed in the limiting groove, and the metal welding core head of the any end of the full-covered welding rod is pressed against the welding wire of the welding wire feeding mechanism toward the limiting groove. The welding wire of the welding wire feeding mechanism is connected to the negative pole of the electric welding machine through a magnetic welding part or a grounding part, and the shortened welding rod end extends into the limiting groove, and is welded to the second full-covered welding rod through the welding wire extended into the limiting groove.

7. The welding rod connection device according to claim 6, characterized in that The vertical axis hole is a circular vertical axis hole, the vertical axis is a circular vertical axis that is slidably matched with the circular vertical axis hole, and the jaw socket is made of carbon steel or other metal welding rod materials; a tension spring is arranged between the vertical axis and the fixed mouth or between the fixed mouth and the movable mouth; the vertical axis extends from one side or both sides of the jaw socket; a tension spring is arranged between the vertical axis and the fixed mouth or between the fixed mouth and the movable mouth; The limiting groove is a U-shaped limiting groove with left and right opposite welding wire through holes. The welding wire feeding mechanism is a magnetic base equipped with two welding wire reels. The two welding wires respectively wound out of the two welding wire reels pass through their respective wire drawers and respectively penetrate into the left and right opposite welding wire through holes of the U-shaped limiting groove, and welding is performed through the two opposite welding wires.

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