Mechanical device for self-adaptive pay-off of metal welding wires

Abstract

A mechanical device suitable for self-adaptive pay-off of metal welding wires comprises a worm gear, a worm, a clamping plate, a godet wheel mounting seat, a concave-convex godet wheel, a godet wheel pin shaft, a driving motor of the godet wheel pin shaft and two outer boxes installed side by side, the worm gear and the worm form two worm gear and worm pairs respectively, and the outer boxes are fixedly installed on a machine frame. The inner end parts of the two worms are opposite and are coaxially and horizontally mounted, and the outer end parts of the two worms are provided with manual rotating devices; the two worm gear rotating shafts are parallel to each other and are respectively positioned above the worm; racks are installed on the bottom faces of the clamping plates, the opposite end faces of the two clamping plates are installation end faces, godet wheel installation bases are fixedly installed on the two installation end faces respectively, the opposite end faces of the two godet wheel installation bases are concave inwards to form installation notches for clamping and installing the concave-convex godet wheel, and the axis of a godet wheel pin shaft is orthogonal to the axis of the worm wheel and the axis of the worm respectively. And a welding wire passes through a gap between the concave wire guide wheel and the convex wire guide wheel.

Description

Technical Field

[0001] This invention relates to the field of wire feeding devices. Background Technology

[0002] In the production of multi-stranded welding wire, after dense twisting and forming, a stable wire feeding system is essential to ensure its quality. Traditional wire feeding devices, when using hollow wire reels or coils, still require manual adjustment of wire tension, which is unsuitable for the complex production environment of multi-stranded welding wire. This is mainly due to: difficulty in precisely controlling tension, resulting in unstable wire elongation; reduced automation and efficiency; and increased workload for workers. Therefore, it is necessary to provide a wire feeding system that can adjust feed speed and tension in real time for different situations in multi-stranded welding wire production. This adaptive feeding system combines automated control modules, sensors, and mechanical devices. A key challenge in the current technology is to develop a suitable mechanical device that is simple in structure, reliable in operation, and easy to adjust. Summary of the Invention

[0003] To address the problems existing in the prior art, the technical solution adopted by the present invention is as follows: A mechanical device for adaptive wire feeding of metal welding wire, the mechanical device comprising a worm wheel and a worm that respectively form two worm gear pairs, a clamping plate, a wire guide wheel mounting seat, a concave and convex wire guide wheel, a wire guide wheel pin shaft and its drive motor, and two outer boxes installed side by side, the outer boxes being fixedly installed on a frame; The inner ends of the two worms are opposite each other and coaxially mounted horizontally, and the outer ends are equipped with manual rotation devices; the two worm wheel rotation shafts are parallel and located above the worms respectively, and the unthreaded parts at both ends of the worms are rotatably mounted in the worm mounting holes on the outer casing wall through bearings, and the ends of the worm wheel shafts are also rotatably mounted in the worm wheel mounting holes on the outer casing wall through bearings. The bottom surface of the clamping plate is equipped with a rack. The racks of the two clamping plates mesh with the worm gear from above and are parallel to the worm. The opposite end faces of the two clamping plates are the mounting end faces. Guide wheel mounting seats are fixedly installed on the two mounting end faces respectively. The opposite end faces of the two guide wheel mounting seats are concave to form mounting notches for clamping and installing concave and convex guide wheels. The upper and lower walls of the mounting notches have guide wheel mounting holes for accommodating guide wheel pins. The concave and convex guide wheels include concave guide wheels and convex guide wheels that are fixed in different mounting notches by guide wheel pins respectively. The axis of the guide wheel pin is orthogonal to the axis of the worm gear and the worm. The gap between the concave and convex guide wheels is used for the welding wire to pass through. The end of the upper guide wheel pin of the concave and convex guide wheels extends out of the upper end face of the guide wheel mounting base and is connected to the output shaft of the drive motor. The upper surface of the clamp plate has two upright limiting plates. A guide optical axis parallel to the rack is installed between the limiting plates. A guide block is installed on the inner surface of the upper wall of the outer box. The guide block has a guide groove. The guide optical axis fits against the inner wall of the guide groove. The guide plate can move along the guide optical axis between the two limiting plates.

[0004] The aforementioned mechanical device for adaptive wire feeding of metal welding wire further includes a servo motor as the drive motor.

[0005] The aforementioned mechanical device for adaptive wire feeding of metal welding wire further includes a crank handle as the manual rotating device.

[0006] The present invention provides a mechanical device suitable for adaptive wire feeding of metal welding wire, which has the following advantages: The worm gear motion pair is used to adjust the gap between the concave and convex wire guide wheels. By utilizing its self-locking characteristics, the clamping stability of the device during the movement of the welding wire is improved. At the same time, the wire guide wheels are driven by a servo motor, which can be manually adjusted in real time according to the tension of the welding wire, or automatically controlled by automatic control equipment such as PLC, so as to realize the adaptive wire feeding. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the usage state of a mechanical device for adaptive wire feeding of metal welding wire provided by the present invention.

[0008] Figure 2 This is a front view schematic diagram of a mechanical device for adaptive wire feeding of metal welding wire according to the present invention.

[0009] Figure 3 This is a schematic diagram of the outer casing of a mechanical device for adaptive wire feeding of metal welding wire provided by the present invention.

[0010] Figure 4 This is a schematic diagram of the outer casing structure of a mechanical device for adaptive wire feeding of metal welding wire provided by the present invention. Detailed Implementation

[0011] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings: like Figures 1 to 4 As shown, the present invention provides a mechanical device suitable for adaptive wire feeding of metal welding wire. The mechanical device includes a worm wheel 101 and a worm 102 that respectively form two worm gear pairs, a clamping plate 103, a wire guide wheel mounting seat 104, a concave and convex wire guide wheel 105, a wire guide wheel pin and its drive motor 107, and two outer boxes 106 installed side by side. The outer boxes are fixedly installed on the frame.

[0012] The inner ends of the two worm gears are opposite each other and coaxially mounted horizontally, and the outer ends of both have a manual rotation device 1021; the two worm wheel rotation shafts are parallel and located above the worm gears respectively, and the unthreaded parts at both ends of the worm gears are rotatably mounted in the worm gear mounting holes 1061 on the outer casing wall through bearings, and the ends of the worm wheel shafts are also rotatably mounted in the worm wheel mounting holes 1062 on the outer casing wall through bearings. The bottom surface of the clamping plate 103 is equipped with a rack 1031. The racks of the two clamping plates mesh with the worm gear from above and are parallel to the worm. The opposite end faces of the two clamping plates are the mounting end faces. Guide wheel mounting seats are fixedly installed on the two mounting end faces respectively. The opposite end faces of the two guide wheel mounting seats are concave to form mounting notches 1041 for clamping and installing concave and convex guide wheels. The upper and lower walls of the mounting notches have guide wheel mounting holes for accommodating guide wheel pins. The concave and convex guide wheels include a concave guide wheel 1051 and a convex guide wheel 1052, which are respectively fixed in the two mounting notches by guide wheel pins. The axis of the guide wheel pin is orthogonal to the axis of the worm gear and the worm. The gap between the concave and convex guide wheels is used for the welding wire 200 to pass through. The end of the upper guide wheel pin of the concave and convex guide wheels extends out of the upper end face of the guide wheel mounting base and is connected to the output shaft of the drive motor. The upper surface of the clamp plate has two upright limiting plates 1032. A guide optical axis 1033 parallel to the rack is installed between the limiting plates. A guide block 1063 is installed on the inner surface of the upper wall of the outer box. The guide block has a guide groove 1064. The guide optical axis fits against the inner wall of the guide groove. The guide plate can move along the guide optical axis between the two limiting plates.

[0013] Example 1: In this embodiment, the drive motor is a servo motor, and the two servo motors control the rotation speed and direction of the concave and convex guide wheels, respectively. The manual rotation device is a crank handle.

[0014] The working principle of the mechanical device for adaptive wire feeding of metal welding wire is as follows: The continuously produced and fed metal welding wires use tension sensors to detect tension changes. A PLC control system adjusts the servo motor speed in real time based on the tension data, thereby regulating the wire feed speed and ultimately the tension on the welding wire. When the PLC system detects a decrease in tension, it reduces the motor speed, increasing the tension of the welding wire behind the guide wheel; conversely, when it detects an increase in tension, it increases the motor speed, decreasing the tension of the welding wire behind the guide wheel.

[0015] In practical use, the H-beam spool 300 for winding the welding wire is rotatably placed in the H-beam spool holder. Then, the welding wire provided in the previous process is inserted from the front side into the space between the concave and convex guide wheels and pulled out from the rear side, and initially wound and fixed on the H-beam spool. The manual rotating device is rotated to turn the worm gear, which drives the worm wheel to move. The worm wheel drives the rack to move, so that the two clamping plates on both sides move closer together until the concave and convex guide wheels clamp the welding wire. The rotation of the worm gear is stopped, which realizes self-locking and keeps the gap between the concave and convex guide wheels fixed. The motor is started to drive the concave and convex guide wheels to rotate at a constant speed to release the wire. The welding wire drives the H-beam spool to rotate, which completes the release and winding of the welding wire.

[0016] The embodiments and descriptions above are merely illustrative of the principles and preferred embodiments of the present invention. Various changes and modifications may be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A mechanical device suitable for adaptive wire feeding of metal welding wire, characterized in that... The mechanical device includes worm gears and worms forming two worm gear pairs, clamping plates, guide wheel mounting seats, concave and convex guide wheels, guide wheel pins and their drive motors, and two outer boxes mounted side by side, the outer boxes being fixedly mounted on a frame; the inner ends of the two worms are opposite each other and coaxially mounted horizontally, and each outer end has a manual rotation device; the rotating shafts of the two worm gears are parallel and located above the worms respectively, the unthreaded portions at both ends of the worms are rotatably mounted in worm mounting holes in the outer box wall via bearings, and the ends of the worm wheel shafts are also rotatably mounted in worm wheel mounting holes in the outer box wall via bearings; racks are mounted on the bottom surface of the clamping plates, the racks of the two clamping plates mesh with the worm gears from above and are parallel to the worms, the opposite end faces of the two clamping plates are mounting end faces, and guide wheel mounting seats and two guide wheels are fixedly mounted on the two mounting end faces respectively. The opposite end faces of the mounting base are concave to form mounting notches for clamping and mounting concave and convex guide wheels. The upper and lower walls of the mounting notches have guide wheel mounting holes for accommodating guide wheel pins. The concave and convex guide wheels include concave guide wheels and convex guide wheels respectively fixed in different mounting notches by guide wheel pins. The axis of the guide wheel pin is orthogonal to the axis of the worm gear and worm. The gap between the concave and convex guide wheels is used for the passage of welding wire. The end of the upper guide wheel pin of the concave and convex guide wheels extends out of the upper end face of the guide wheel mounting base and is connected to the output shaft of the drive motor. The upper end face of the clamping plate has two upright limiting plates. A guide optical shaft parallel to the rack is installed between the limiting plates. A guide block is installed on the inner surface of the upper wall of the outer box. The guide block has a guide groove. The guide optical shaft fits against the inner wall of the guide groove. The guide plate can move along the guide optical shaft between the two limiting plates.

2. The mechanical device for adaptive wire feeding of metal welding wire as described in claim 1, characterized in that, The drive motor is a servo motor.

3. The mechanical device for adaptive wire feeding of metal welding wire as described in claim 1, characterized in that, The manual rotating device is a crank handle.

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