Automatic steel casting repair welding machine

Abstract

The invention relates to the field of cast steel repair welding, in particular to an automatic steel casting repair welding machine which comprises a machining welding head, two sets of cast steel limiting frames arranged at the top of the machining welding head, first sliding blocks movably connected to the inner side wall faces of the cast steel limiting frames in a lap joint mode, and cast steel movably connected to the inner side wall faces of the first sliding blocks in a sleeving mode. The device is characterized in that a first swing arm is connected to the surface of the top of the sliding plate in a swing mode, and a second sliding block is connected to the surface of the bottom of the first swing arm in a sliding and sleeved mode. When the second arc-shaped lap joint plate is in lap joint with the top surface of the cast steel, a certain gap is reserved between the welding device and the cast steel in cooperation with the second arc-shaped lap joint plate at the moment, and the welding device is prevented from directly colliding with the surface of the cast steel; waste gas and metal particles generated during welding of the welding device are guided and discharged, and the situation that the metal particles are accumulated on the outer side surface of the welding device is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of cast steel repair welding, in particular to an automatic repair welding machine for cast steel parts. Background Art

[0002] Steel with a hollow section, whose length is much larger than its diameter or circumference, is divided into round, square, rectangular and special-shaped steel pipes according to the cross-sectional shape; divided into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes and composite steel pipes according to the material; divided into steel pipes for conveying pipelines, engineering structures, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment, etc. according to the purpose; divided into seamless steel pipes and welded steel pipes according to the production process, among which seamless steel pipes are divided into hot-rolled and cold-rolled (drawn), and welded steel pipes are divided into straight seam welded steel pipes and spiral seam welded steel pipes.

[0003] A patent with publication number CN114669903B discloses an automatic steel pipe welding machine, which includes two support frames and eight support legs, as well as a controller and a repair mechanism. A support rod is fixed between the two support frames. The repair mechanism includes a slide, a camera, a heating tank, a drive assembly, an extrusion assembly and a swing assembly. The camera, the heating tank, the drive assembly, the extrusion assembly and the swing assembly are all electrically connected to the controller. The present invention relates to an automatic steel pipe welding machine. When repairing defects on the surface of a steel pipe, it is only necessary to place the steel pipe between two arc-shaped limit rods and two arc-shaped support rods. The camera provides a real-time inspection picture, and the repair mechanism performs repairs. Compared with the existing technology, there is no need for repairs through manual handheld devices. The entire process is automated with fast speed, high precision and high efficiency. At the same time, it is beneficial to save labor costs and reduce the workload of workers.

[0004] In the current existing technology, when existing cast steel is welded, mechanical or manual welding is generally used. Regardless of manual or mechanical welding, employees are required to carefully observe the welding position after welding is completed, and then perform secondary welding on the incomplete welded points and surfaces. However, the gaps or empty spots inside the welding rod cannot be observed by naked eye observation, and the equipment needs to be turned off during naked eye observation, which will cause a great waste of time and work efficiency.

[0005] To this end, the present invention provides an automatic repair welding machine for steel castings. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the automatic repair welding machine for cast steel parts described in the present invention includes a processing welding head and two sets of cast steel limit frames arranged on the top of the processing welding head, a slider 1 movably overlapped on the inner wall surface of the cast steel limit frame, a cast steel movably sleeved on the inner wall surface of the slider 1, and a slide plate movably overlapped on the edge position of one side of the processing welding head, characterized in that: a swing arm 1 is swingably connected to the top surface of the slide plate, a slide plate 2 is slidably sleeved on the bottom surface of the swing arm 1, and a slide plate movably overlapped on the top surface of the cast steel is fixedly installed on the bottom surface of the slide plate The arc-shaped lap plate 2 is mounted on the upper portion, a welder is fixedly mounted on the inner wall surface of the top of the arc-shaped lap plate 2, a down-presser is fixedly mounted on the outer surface of the slider 2, a swing arm 2 is swingably connected to the bottom surface of the slider 2, the output end of the down-presser is movably overlapped on the outer surface of the swing arm 2, a repair welder is provided on the outer surface of one end of the swing arm 2, a grinding wheel movably overlapped on the cast steel surface is provided on the inner wall surface of the arc-shaped lap plate 2 and one end of the swing arm 2; a motor 4 is provided on the outer surface of the slider 1, and a docking track bar is provided on the outer surface of the motor 4.

[0008] Preferably, an arc-shaped overlapping plate 1 is fixedly connected to the outer surface of the slider 1, a closing cover is movably overlapped on the top surface of the arc-shaped overlapping plate 1, and the outer surface of the slider 1 is movably overlapped on the outer surface of the closing cover.

[0009] Preferably, the arc-shaped overlapping plate 1 and the inner wall surface of the closing cover are movably sleeved with multi-angle overlapping grooves, and the outer side surfaces of a group of the multi-angle overlapping grooves are fixedly connected to the outer side surface of the docking track bar.

[0010] Preferably, a limiting groove three is provided on the top surface of the closing cover, and a pulley is provided on the bottom surface of the slider one.

[0011] Preferably, a groove is provided on the top surface of the cast steel limiting frame, and an arc-shaped docking groove is provided on the inner wall surface of the bottom of the cast steel limiting frame and at one side edge position.

[0012] Preferably, a limiting groove is provided on the upper and lower surfaces of the cast steel limiting frame, the outer surface of the pulley is movably overlapped on the inner wall of the limiting groove, and a motor is fixedly installed on one side surface of the cast steel limiting frame.

[0013] Preferably, the output end of motor one is threaded and movably sleeved on the outer surface of slider one, and motor three is provided on the top surface of the processing welding head, and the output end of motor three is threaded and movably adjusted on the outer surface of a set of cast steel limit frames.

[0014] Preferably, a second limiting groove is provided on one side surface of the processing welding head, and limiting track bars are fixedly connected to the upper and lower inner wall surfaces of the second limiting groove.

[0015] Preferably, a second motor is provided on the inner wall surface of the second limiting groove, and the output end of the second motor is movably sleeved on the outer surface of the slide plate through a thread.

[0016] Preferably, a limiting slider is provided on the bottom surface of the slide, and the outer surface of the limiting slider is movably sleeved on the surfaces of the second limiting groove, the limiting track bar and the screw rod.

[0017] The beneficial effects of the present invention are as follows: 1. The automatic repair welding machine for cast steel parts described in the present invention, when the second arc-shaped lap plate is overlapped on the top surface of the cast steel, a certain gap is left between the welder and the cast steel in cooperation with the second arc-shaped lap plate, so as to prevent the welder from directly hitting the surface of the cast steel. At the same time, the gap between the second arc-shaped lap plate and the cast steel is utilized to guide and discharge the waste gas and metal particles generated during welding by the welder, thereby reducing the accumulation of metal particles on the outer surface of the welder; when the second arc-shaped lap plate is overlapped on the top surface of the cast steel, the grinding wheel on the inner wall of the second arc-shaped lap plate is used to grind the surface of the cast steel joint, and then polish the rust on the cast steel surface, so as to facilitate the welder to weld at the ground and polished position; 2. The automatic repair welding machine for cast steel parts described in the present invention, when two cast steels are butted together, the swing arm 2 is pressed down by the presser, and the swing arm 2 is swung, and the repair welding device on one end of the swing arm 2 is overlapped on the surface of the cast steel, and the grinding wheel on the outer surface of the swing arm 2 is used to grind the weld of the cast steel to grind the protrusion, and the repair welding device is used to perform secondary welding on the ground position, which can be used to repair some deep holes. At the same time, when the cast steel rotates, the grinding wheel can also grind the position of the secondary repair welding. The surface of the cast steel can be welded, ground, and repaired by the rotation of the cast steel, without the need for secondary naked eye or mechanical observation at a later time; 3. The automatic repair welding machine for steel castings of the present invention processes a notch on the top surface of the welding head, allowing the cast steel to be placed inside the first arc-shaped overlap plate. The closing cover is then overlapped on the top surface of the first arc-shaped overlap plate. The first arc-shaped overlap plate and the closing cover are used to position the cast steel. The protrusion on the top surface of the first slider is used to define the position of the closing cover, thereby preventing the closing cover from being displaced when it overlaps the top surface of the first arc-shaped overlap plate. 4. The automatic welding machine for steel castings of the present invention cooperates with a swing arm 1 to swing on the surface of the slide plate when two pieces of cast steel are butted against the wall of a slider 1, so that an arc-shaped overlap plate 2 on the bottom surface of a slider 2 overlaps the outer surface of the cast steel. The welder then welds the butt joint of the two pieces of cast steel. Simultaneously, a motor 4 drives the surface of the butt joint track bar, causing the cast steel to rotate under the drive of the motor 4, thereby changing the welder's ability to effectively weld different positions on the cast steel surface. 5. The automatic repair welding machine for cast steel parts described in the present invention, when the cast steel is overlapped inside the arc-shaped overlap plate, the docking track bar is docked, and the surface of one end of the multi-angle overlap groove is clamped and positioned. At this time, the motor four rotates on the surface of the docking track bar. The rotating docking track bar will drive the multi-angle overlap groove to rotate slowly on the inner wall surface of the arc-shaped overlap plate, so that the repair welder and the welder can weld and repair the surface of the cast steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a perspective view of the present invention; Figure 2 It is a sectional perspective view of the limiting slider in the present invention; Figure 3 This is a sectional perspective view of the second swing of the swing arm in the present invention; Figure 4 It is a three-dimensional diagram of the skateboard in the present invention; Figure 5 It is a side perspective view of the processing welding head in the present invention; Figure 6 This is an expanded perspective view of the cast steel limit frame in the present invention; Figure 7 It is an expanded stereoscopic view of the slider in the present invention; Figure 8 It is a three-dimensional diagram of the swing arm in the present invention; Figure 9 It is an unfolded stereogram of the swing arm in the present invention.

[0020] In the figure: 11, processing welding head; 111, cast steel limit frame; 112, arc-shaped docking groove; 113, limit groove one; 114, motor one; 115, limit groove two; 116, limit track bar; 117, motor two; 118, motor three; 12, slider one; 121, pulley; 122, arc-shaped lap plate one; 123, closing cover; 124, limit groove three; 125, docking track bar; 126, motor four; 127, multi-angle lap groove; 13, cast steel; 14, slide plate; 141, limit slider; 142, swing arm one; 143, slider two; 144, arc-shaped lap plate two; 145, welder; 146, grinding wheel; 147, presser; 148, swing arm two; 149, repair welder. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figures 1 to 9 As shown, an automatic repair welding machine for steel castings according to an embodiment of the present invention comprises a processing welding head 11 and two sets of cast steel limiting frames 111 arranged on the top of the processing welding head 11, a slider 12 movably overlapped on the inner wall surface of the cast steel limiting frame 111, a cast steel 13 movably sleeved on the inner wall surface of the slider 12, a slide plate 14 movably overlapped on the edge position of one side of the processing welding head 11, a swing arm 142 is swingably connected to the top surface of the slide plate 144, a slider 2 143 is slidably sleeved on the bottom surface of the swing arm 142, an arc-shaped overlap plate 2 144 movably overlapped on the top surface of the cast steel 13 is fixedly installed on the bottom surface of the slider 2 143, and an arc-shaped overlap plate 2 144 movably overlapped on the top surface of the cast steel 13 is fixedly mounted on the bottom surface of the slider 2 143. A welder 145 is fixedly installed on the top inner wall of plate 2 144, a down-presser 147 is fixedly installed on the outer surface of slider 2 143, a swing arm 2 148 is swingably connected to the bottom surface of slider 2 143, the output end of the down-presser 147 is movably overlapped on the outer surface of swing arm 2 148, a repair welder 149 is provided on the outer surface of one end of swing arm 2 148, a grinding wheel 146 movably overlapped on the surface of cast steel 13 is provided on the inner wall of arc-shaped overlap plate 2 144 and one end of swing arm 2 148; a motor 4 126 is provided on the outer surface of slider 12, and a docking track bar 125 is provided on the outer surface of motor 4 126.

[0023] When the two cast steels 13 are docked on the wall of the slider 12, the swing arm 142 is swung on the surface of the slide 14, and the arc-shaped overlap plate 2 144 on the bottom surface of the slider 2 143 is overlapped on the outer surface of the cast steel 13. The welder 145 is used to weld the joints of the two cast steels 13. At the same time, the motor 4 126 is used to drive the surface of the docking track bar 125, so that the cast steel 13 rotates automatically under the drive of the motor 4 126, thereby changing the effect of the welder 145 to effectively weld different positions on the surface of the cast steel 13. When the second arc-shaped lap plate 144 overlaps the top surface of the cast steel 13, a certain gap is left between the welder 145 and the cast steel 13 to prevent the welder 145 from directly hitting the surface of the cast steel 13. At the same time, the gap between the second arc-shaped lap plate 144 and the cast steel 13 is used to guide and discharge the exhaust gas and metal particles generated by the welder 145 during welding, thereby reducing the accumulation of metal particles on the outer surface of the welder 145. When the second arc-shaped overlap plate 144 overlaps the top surface of the cast steel 13, the grinding wheel 146 on the inner wall of the second arc-shaped overlap plate 144 is used to grind the surface of the joint of the cast steel 13, thereby polishing the rust on the surface of the cast steel 13, so as to facilitate the welding effect of the welder 145 on the polished position; After the two cast steels 13 are docked, the swing arm 148 is pressed down by the down-presser 147, and the swing arm 148 is swung, and the repair welder 149 on one end of the swing arm 148 is overlapped on the surface of the cast steel 13. At this time, the welding part of the cast steel 13 is polished by the grinding wheel 146 on the outer surface of the swing arm 148, and the protrusion is polished. The polished position is then welded for the second time by the repair welder 149, and some deep holes can be repaired. At the same time, when the cast steel 13 rotates, the grinding wheel 146 can also grind the position of the secondary repair welding. The surface of the cast steel 13 can be welded, polished, and repaired by the rotation of the cast steel 13, without the need for secondary visual or mechanical observation at a later time.

[0024] like Figures 1 to 9As shown, an arc-shaped lap plate 122 is fixedly connected to the outer surface of the slider 12, and a closing cover 123 is movably overlapped on the top surface of the arc-shaped lap plate 122. The outer surface of the slider 12 is movably overlapped on the outer surface of the closing cover 123, and the inner side walls of the arc-shaped lap plate 122 and the closing cover 123 are movably sleeved with multi-angle overlapping grooves 127. The outer surface of a group of multi-angle overlapping grooves 127 is fixedly connected to the outer surface of the docking track bar 125, and a limiting groove three 124 is provided on the top surface of the closing cover 123. A pulley 121 is provided on the bottom surface of the slider 12, and a groove is provided on the top surface of the cast steel limit frame 111. An arc-shaped docking groove 112 is provided on the inner side wall of the bottom of the cast steel limit frame 111 and located at one side edge. A limiting groove 113 is provided on the upper and lower surfaces of the cast steel limit frame 111. Connected to the inner wall of the limiting groove 113, a motor 114 is fixedly installed on the side surface of the cast steel limiting frame 111, and the output end of the motor 114 is threaded and movably sleeved on the outer surface of the slider 12. A motor 3 118 is provided on the top surface of the processing welding head 11, and the output end of the motor 3 118 is threaded and movably adjusted on the outer surface of a group of cast steel limiting frames 111. A limiting groove 2 115 is provided on one side surface of the processing welding head 11, and a limiting track bar 116 is fixedly connected to the upper and lower inner wall surfaces of the limiting groove 2 115. A motor 2 117 is provided on the inner wall surface of the limiting groove 2 115, and the output end of the motor 2 117 is threaded and movably sleeved on the outer surface of the slide 14. A limiting slider 141 is provided on the bottom surface of the slide 14, and the outer surface of the limiting slider 141 is movably sleeved on the surface of the limiting groove 2 115, the limiting track bar 116 and the screw rod.

[0025] By machining the notch on the top surface of the welding head 11, the cast steel 13 is placed into the interior of the arc-shaped lap plate 122. At this time, the closing cover 123 is overlapped on the top surface of the arc-shaped lap plate 122. At this time, the position of the cast steel 13 is positioned using the arc-shaped lap plate 122 and the closing cover 123. At this time, the position of the closing cover 123 is limited by the protrusion on the top surface of the slider 12 to avoid positional deviation when the closing cover 123 overlaps the top surface of the arc-shaped lap plate 122. The motor 3 118 rotates the screw rod and drives the cast steel limit frame 111 to slide on the top surface of the processing welding head 11, thereby butting the two cast steels 13 together. The slider 12 is pushed and adjusted by the motor 114 to adjust the angle of the two cast steels 13. At this time, the motor 2 117 rotates the screw rod again, causing the slide plate 14 to slide inside the limiting groove 2 115 and adjust the welding position of the welder 145. The motor 114 is used to rotate the screw rod, and the slider 12 is limited and slid on the inner wall of the cast steel limit frame 111. The limit groove 3 124 on the top surface of the closing cover 123 overlaps the inner wall of the limit groove 113 and slides. At this time, the cast steel limit frame 111 firmly restrains the closing cover 123 and the arc-shaped overlapping plate 122 together, and there is no need to use screws to fix them later. When the cast steel 13 is sleeved inside the arc-shaped overlap plate 122, the surface of the cast steel 13 is overlapped by the arc-shaped overlap plate 122 and the multi-angle overlap groove 127 inside the closing cover 123. The rectangular and arc angles on the surface of the multi-angle overlap groove 127 can effectively overlap rectangular cast steel and circular cast steel, and prevent the cast steel 13 from tilting excessively during rotation and welding. When the cast steel 13 is overlapped inside the arc-shaped overlap plate 122, the docking track bar 125 is docked, and one end surface of the multi-angle overlap groove 127 is clamped and positioned. At this time, the motor 4 126 is rotated on the surface of the docking track bar 125. The rotating docking track bar 125 will drive the multi-angle overlap groove 127 to rotate slowly on the inner wall surface of the arc-shaped overlap plate 122, so that the repair welder 149 and the welder 145 weld and repair the surface of the cast steel 13.

[0026] Working principle: By machining the notch on the top surface of the welding head 11, the cast steel 13 is placed into the interior of the arc-shaped lap plate 122. At this time, the closing cover 123 is overlapped on the top surface of the arc-shaped lap plate 122. At this time, the position of the cast steel 13 is positioned by using the arc-shaped lap plate 122 and the closing cover 123. At this time, the position of the closing cover 123 is limited by the protrusion on the top surface of the slider 12 to avoid positional deviation when the closing cover 123 overlaps the top surface of the arc-shaped lap plate 122. When the two cast steels 13 are docked on the wall of the slider 12, the swing arm 142 is swung on the surface of the slide 14, and the arc-shaped overlap plate 2 144 on the bottom surface of the slider 2 143 is overlapped on the outer surface of the cast steel 13. The welder 145 is used to weld the joints of the two cast steels 13. At the same time, the motor 4 126 is used to drive the surface of the docking track bar 125, so that the cast steel 13 rotates automatically under the drive of the motor 4 126, thereby changing the effect of the welder 145 to effectively weld different positions on the surface of the cast steel 13. The motor 114 is used to rotate the screw rod, and the slider 12 is limited and slid on the inner wall of the cast steel limit frame 111. The limit groove 3 124 on the top surface of the closing cover 123 overlaps the inner wall of the limit groove 113 and slides. At this time, the cast steel limit frame 111 firmly restrains the closing cover 123 and the arc-shaped overlapping plate 122 together, and there is no need to use screws to fix them later. When the cast steel 13 is sleeved inside the arc-shaped overlap plate 122, the surface of the cast steel 13 is overlapped by the arc-shaped overlap plate 122 and the multi-angle overlap groove 127 inside the closing cover 123. The rectangular and arc angles on the surface of the multi-angle overlap groove 127 can effectively overlap rectangular cast steel and circular cast steel, and prevent the cast steel 13 from tilting excessively during rotation and welding. When the second arc-shaped lap plate 144 is overlapped on the top surface of the cast steel 13, a certain gap is left between the welder 145 and the cast steel 13 in cooperation with the second arc-shaped lap plate 144 to prevent the welder 145 from directly hitting the surface of the cast steel 13. At the same time, the gap between the second arc-shaped lap plate 144 and the cast steel 13 is used to guide and discharge the waste gas and metal particles generated by the welder 145 during welding, thereby reducing the accumulation of metal particles on the outer surface of the welder 145. When the second arc-shaped lap plate 144 is overlapped on the top surface of the cast steel 13, the grinding wheel 146 on the inner wall of the second arc-shaped lap plate 144 is used to grind the surface of the joint of the cast steel 13, and then polish the rust on the surface of the cast steel 13, so as to facilitate the welder 145 to weld at the ground and polished position. After the two cast steels 13 are docked, the second swing arm 148 is pressed down by the presser 147, and the second swing arm 148 is swung, and the repair welder 149 on one end of the second swing arm 148 is overlapped on the surface of the cast steel 13. At this time, the grinding wheel 146 on the outer surface of the second swing arm 148 is used to grind the welding position of the cast steel 13, and the protrusion is polished. The repair welder 149 is used to perform secondary welding on the polished position, which can be used to repair some deep holes. At the same time, when the cast steel 13 rotates, the grinding wheel 146 can also grind the position of the secondary repair welding. The rotation of the cast steel 13 can be used to weld, grind, and repair the surface of the cast steel 13, without the need for secondary naked eye or mechanical observation at a later time. When the cast steel 13 is overlapped inside the arc-shaped overlap plate 122, the docking track bar 125 is docked, and one end surface of the multi-angle overlap groove 127 is clamped and positioned. At this time, the motor 4 126 is rotated on the surface of the docking track bar 125. The rotating docking track bar 125 will drive the multi-angle overlap groove 127 to rotate slowly on the inner wall surface of the arc-shaped overlap plate 122, so that the repair welder 149 and the welder 145 weld and repair the surface of the cast steel 13.

[0027] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic repair welding machine for steel castings, comprising a processing welding head (11) and two sets of cast steel limit frames (111) arranged on the top of the processing welding head (11), a slider (12) movably connected to the inner wall surface of the cast steel limit frame (111), a cast steel (13) movably sleeved on the inner wall surface of the slider (12), and a slide (14) movably connected to the edge position of one side of the processing welding head (11), characterized in that: The top surface of the slide plate (14) is swiveled with a swing arm 1 (142), the bottom surface of the swing arm 1 (142) is slidably sleeved with a slider 2 (143), the bottom surface of the slider 2 (143) is fixedly mounted with an arc-shaped lap plate 2 (144) movably lapped on the top surface of the cast steel (13), a welder (145) is fixedly mounted on the top inner wall surface of the arc-shaped lap plate 2 (144), a down-presser (147) is fixedly mounted on the outer surface of the slider 2 (143), and the bottom surface of the slider 2 (143) is swiveled with a swing arm 1 (142), ...slidably sleeved with a slider 2 (143), the bottom surface of the slider 2 (143) is fixedly mounted with an arc-shaped lap plate 2 (144) movably lapped on the top surface of the cast steel (13), a welder (145) is fixedly mounted on the top inner wall surface of the arc-shaped lap plate 2 (144), and a down-presser (147) is fixedly mounted on the outer surface of the slider 2 (143). It is connected to a second swing arm (148), the output end of the down-presser (147) is movably overlapped on the outer surface of the second swing arm (148), a repair welder (149) is provided on the outer surface of one end of the second swing arm (148), and a grinding wheel (146) movably overlapped on the surface of the cast steel (13) is provided on the inner wall surface of the second arc-shaped overlap plate (144) and one end of the second swing arm (148); a motor four (126) is provided on the outer surface of the slider one (12), and a docking track bar (125) is provided on the outer surface of the motor four (126).

2. The automatic repair welding machine for steel castings according to claim 1, characterized in that: An arc-shaped lap plate 1 (122) is fixedly connected to the outer surface of the slider 1 (12), a closing cover (123) is movably overlapped on the top surface of the arc-shaped lap plate 1 (122), and the outer surface of the slider 1 (12) is movably overlapped on the outer surface of the closing cover (123).

3. The automatic repair welding machine for steel castings according to claim 2, characterized in that: The inner side walls of the arc-shaped overlapping plate (122) and the closing cover (123) are movably sleeved with multi-angle overlapping grooves (127), and the outer side surfaces of a group of the multi-angle overlapping grooves (127) are fixedly connected to the outer side surface of the docking track bar (125).

4. The automatic repair welding machine for steel castings according to claim 2, characterized in that: A limiting groove three (124) is provided on the top surface of the closing cover (123), and a pulley (121) is provided on the bottom surface of the slider one (12).

5. The automatic repair welding machine for steel castings according to claim 4, characterized in that: A groove is provided on the top surface of the cast steel limiting frame (111), and an arc-shaped docking groove (112) is provided on the inner wall surface of the bottom of the cast steel limiting frame (111) and at a side edge position.

6. The automatic repair welding machine for steel castings according to claim 4, characterized in that: A limiting groove (113) is provided on the upper and lower surfaces of the cast steel limiting frame (111), the outer surface of the pulley (121) is movably overlapped on the inner wall of the limiting groove (113), and a motor (114) is fixedly mounted on one side surface of the cast steel limiting frame (111).

7. The automatic repair welding machine for steel castings according to claim 6, characterized in that: The output end of the motor 1 (114) is threaded and movably sleeved on the outer surface of the slider 1 (12), and the motor 3 (118) is provided on the top surface of the processing welding head (11), and the output end of the motor 3 (118) is threaded and movably adjusted on the outer surface of a set of cast steel limit frames (111).

8. The automatic repair welding machine for steel castings according to claim 7, characterized in that: A second limiting groove (115) is provided on one side surface of the processing welding head (11), and a limiting track bar (116) is fixedly connected to the upper and lower inner wall surfaces of the second limiting groove (115).

9. The automatic repair welding machine for steel castings according to claim 8, characterized in that: A second motor (117) is provided on the inner wall surface of the second limiting groove (115), and the output end of the second motor (117) is threadedly movably sleeved on the outer surface of the slide plate (14).

10. The automatic repair welding machine for steel castings according to claim 9, characterized in that: A limiting slider (141) is provided on the bottom surface of the slide plate (14), and the outer surface of the limiting slider (141) is movably sleeved on the surfaces of the limiting groove 2 (115), the limiting track bar (116) and the screw rod.

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