CN114367776B - Automatic steel pipe welding machine - Google Patents
Automatic steel pipe welding machine Download PDFInfo
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- CN114367776B CN114367776B CN202210033343.2A CN202210033343A CN114367776B CN 114367776 B CN114367776 B CN 114367776B CN 202210033343 A CN202210033343 A CN 202210033343A CN 114367776 B CN114367776 B CN 114367776B
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- Prior art keywords
- fixedly connected
- sleeve
- rod
- pipe
- air
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0247—Driving means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses an automatic steel pipe welding machine which comprises a bearing plate and a welding gun, wherein two supporting plates and supporting frames are fixedly connected to the bearing plate, a plurality of concave frames are fixedly connected to opposite surfaces of the two supporting plates, each concave frame is rotatably connected with a roller for clamping a main sleeve and assisting sliding through a pin shaft, an intermittent rotating mechanism is arranged on the lower surface of the supporting frame, an auxiliary mechanism for determining the diameter of a welded pipe and clamping the welded pipe is arranged on the supporting plate, a pushing mechanism for pushing the main sleeve to enable the welded pipe to be welded is arranged on the bearing plate, and a welding mechanism for welding the welded pipe on the main sleeve is arranged on the intermittent rotating mechanism. According to the invention, through the cooperation of the integral structure, the effect of automatically determining the diameter of the branch pipeline and welding according to the diameter is achieved without manual operation, and through arranging the pushing mechanism, the effect of pushing the welded pipe to the welding mechanism is achieved, so that manual pushing is not needed.
Description
Technical Field
The invention relates to the technical field of steel pipe welding machines, in particular to an automatic steel pipe welding machine.
Background
Steel pipes are, as their name implies, steel materials having a hollow cross section, and generally can be classified into round, square, rectangular and abnormal shapes according to the cross sectional shape, and are also used in large numbers in boiler tubes.
When boiler pipeline welding, because need weld the branch pipe of different diameter sizes on it for often need manual welding in the welding, make time and energy consuming, and manual welding is easy because negligence produces quality problem, so we need an automatic steel pipe welding machine to solve above-mentioned problem.
Disclosure of Invention
The invention aims to provide an automatic steel pipe welding machine which has the advantages that manual welding is not needed, the diameter of a branch pipe can be automatically determined, and the problem that time and labor are wasted due to the fact that manual welding is needed is solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an automatic change steel pipe welding machine, includes bearing plate and welder, two backup pads and support frame of fixedly connected with on the bearing plate, two equal fixedly connected with a plurality of spill framves on the opposite face of backup pad, every all be connected with the gyro wheel that is used for centre gripping total sleeve pipe and assist gliding through the round pin axle rotation on the spill frame, be equipped with intermittent type slewing mechanism on the lower surface of support frame, be equipped with the auxiliary mechanism that is used for confirming the diameter of welded tube and centre gripping welded tube in the backup pad, thereby be equipped with the pushing mechanism that is used for promoting total sleeve pipe so that can weld welded tube on the bearing plate, be equipped with the welding mechanism who is used for welding welded tube on total sleeve pipe on the intermittent type slewing mechanism.
Preferably, the intermittent rotating mechanism comprises a rotating shaft, a first rotating rod, a second rotating rod, a third rotating rod and a fourth rotating rod which are rotatably connected to the lower surface of the supporting frame, the rotating shaft is fixedly connected with the output end of an external power source, a first complete gear, a second complete gear, a third complete gear and a fourth complete gear are fixedly connected to arc-shaped outlines of the first rotating rod, the second rotating rod, the third rotating rod and the fourth rotating rod respectively, the first complete gear is meshed with the second complete gear, and incomplete gears which are alternately meshed with the first complete gear, the second complete gear, the third complete gear and the fourth complete gear are fixedly connected to arc-shaped outlines of the rotating shaft.
Preferably, the auxiliary mechanism comprises a sliding plate, two sliding grooves are formed in the supporting plate and are in limiting sliding connection with the sliding plate through the sliding grooves, four sliding grooves are formed in the sliding plate and are in limiting sliding connection with first connecting blocks through the four sliding grooves, each first connecting block is fixedly connected with an arc-shaped block, each arc-shaped block is fixedly connected with an air bag for determining the diameter of a welded pipe and clamping the welded pipe, and each two air bags are fixedly communicated through connecting pipes.
Preferably, the auxiliary mechanism further comprises two limiting rods fixedly connected to the first complete gear, the two limiting rods are connected with a sleeve in a limiting sliding mode, a sliding block is fixedly connected to the inner wall of the sleeve, a first bearing rod is fixedly connected to the bearing plate, a second bearing rod penetrating through the sleeve is fixedly connected to the first bearing rod, one end of the second bearing rod, far away from the first bearing rod, is fixedly connected with a cylindrical cam, a sliding groove is formed in the cylindrical cam and is connected with the sliding block in a sliding mode through the sliding groove, and a rotary groove is formed in the sliding plate and is connected with the sleeve in a limiting and rotating mode through the rotary groove.
Preferably, the auxiliary mechanism further comprises four special-shaped rods, one end, far away from the limiting rod, of the sleeve is fixedly connected with four pin shafts, the sleeve is rotationally connected with the four special-shaped rods through the four pin shafts, each arc-shaped block is fixedly connected with a pin shaft, and each arc-shaped block is rotationally connected with the corresponding special-shaped rod through the pin shaft.
Preferably, the pushing mechanism comprises a first piston cylinder fixedly connected to the bearing plate, a first sealing plug is fixedly connected to the inner wall of the first piston cylinder, a first piston rod is fixedly connected to the first sealing plug, and a pushing plate for pushing the main sleeve is fixedly connected to one end, away from the first sealing plug, of the first piston rod.
Preferably, the pushing mechanism further comprises a second piston cylinder, a first air inlet pipe and a first air delivery pipe, the second piston cylinder is fixedly connected to the limiting rod, a second sealing plug is fixedly connected to the inner wall of the second piston cylinder, a second piston rod is fixedly connected to the second sealing plug, one end, far away from the second sealing plug, of the second piston rod is fixedly connected with the sliding plate, the second piston cylinder is fixedly communicated with the outside through a first air inlet pipe, the second piston cylinder is fixedly communicated with the first piston cylinder through a first air delivery pipe, and one-way valves are fixedly connected to the first air inlet pipe and the first air delivery pipe.
Preferably, the welding mechanism comprises a telescopic rod sleeve fixedly connected to the third rotating rod, a stop block is fixedly connected to the inner wall of the telescopic rod sleeve, a telescopic rod is fixedly connected to the stop block, one end of the telescopic rod, which is far away from the stop block, is fixedly connected with a first supporting block, the first supporting block is fixedly connected with a welding gun, a pressure-sensitive switch which is matched with the stop block is fixedly connected to the inner wall of the telescopic rod sleeve, the pressure-sensitive switch is electrically connected with the welding gun, a spring is sleeved on the telescopic rod, two ends of the spring are fixedly connected with the stop block and the telescopic rod sleeve respectively, a second air inlet pipe is fixedly connected to the telescopic rod sleeve, one end of the second air inlet pipe, which is far away from the telescopic rod sleeve, is fixedly connected with an air bag, and a circular table groove is formed in the telescopic rod sleeve and a circular table is in limiting sliding connection with the circular table through the circular table groove.
Preferably, the support frame is provided with a blowing mechanism for cooling and cleaning the welded total sleeve and the welded pipe, the blowing mechanism comprises a bearing block fixedly connected to the support frame, a chute is formed in the bearing block and is connected with a second support block through the chute in a limiting sliding mode, an elliptic plate is fixedly connected to the second support block, a crank is fixedly connected to the fourth rotating rod, a supporting rod is fixedly connected to the crank, an elliptic groove is formed in the elliptic plate and is in sliding connection with the supporting rod through the elliptic groove, a pushing rod is fixedly connected to the elliptic plate, the pushing rod is fixedly connected with a round table, a second air pipe is fixedly connected to the round table groove of the telescopic rod sleeve, a nozzle is fixedly connected to the second air pipe, and the second air inlet pipe and the second air pipe are fixedly communicated with the one-way valve.
Preferably, the first connecting block is provided with an air supplementing mechanism for supplementing air to the air bag so as to facilitate the next use, the air supplementing mechanism comprises a second connecting block, a third air inlet pipe and a third air pipe, each second connecting block is fixedly connected to the first connecting block, two opposite faces of the second connecting block are fixedly connected with a third piston cylinder and a third piston rod respectively, a third sealing plug is connected to the inner wall of the third piston cylinder in a sliding manner, the third sealing plug is fixedly connected with the third piston rod, the third piston cylinder is fixedly communicated with the outside through a third air inlet pipe, the third piston cylinder is fixedly communicated with the air bag through a third air inlet pipe, and the third air inlet pipe and the third air pipe are fixedly communicated with the one-way valve.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the cooperation of the integral structure, the effect of automatically determining the diameter of the branch pipeline without manual operation and welding according to the diameter is achieved.
2. The invention achieves the effect of fixing and straightening the welded pipe on the support sleeve by arranging the auxiliary mechanism and automatically determining the diameter of the welded pipe so as to weld according to the diameter.
3. According to the invention, by arranging the pushing mechanism, the effect that the auxiliary mechanism is fixed and the welded pipe with the diameter determined to be finished is pushed to the welding mechanism is achieved, so that the welding is convenient, and manual pushing is not needed.
4. According to the invention, by arranging the welding mechanism, the effect of time and labor saving, which is capable of automatically welding pipes with different diameters without manual operation, is achieved.
5. By arranging the blowing mechanism, the invention achieves the effects of cooling the welding pipe and cleaning impurities on the welding pipe.
6. The invention realizes the effect of supplementing the gas in the air bag by arranging the gas supplementing mechanism, thereby ensuring the gas storage quantity in the air bag and further ensuring the accuracy during welding.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a second schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of an intermittent rotary mechanism according to the present invention;
FIG. 4 is a schematic view of the structure of the roller and concave frame of the present invention;
FIG. 5 is a schematic diagram of an auxiliary mechanism according to the present invention;
FIG. 6 is a schematic diagram of an exploded structure of the auxiliary mechanism of the present invention;
FIG. 7 is a second schematic structural view of the auxiliary mechanism of the present invention;
FIG. 8 is a schematic view of a pushing mechanism according to the present invention;
FIG. 9 is a schematic cross-sectional view of a pushing mechanism according to the present invention;
FIG. 10 is a schematic diagram showing a cross section of a pushing mechanism according to the present invention;
FIG. 11 is a schematic view of a welding mechanism according to the present invention;
FIG. 12 is a schematic structural view of the blowing mechanism of the present invention;
FIG. 13 is a schematic cross-sectional view of the welding mechanism and the blowing mechanism of the present invention;
FIG. 14 is a schematic diagram of the air supply mechanism of the present invention;
fig. 15 is a schematic cross-sectional view of the air supply mechanism of the present invention.
In the figure: 1. a bearing plate; 11. a support frame; 12. a bearing block; 2. a rotating shaft; 21. a non-full gear; 22. a first full gear; 23. a second full gear; 24. a first rotating lever; 25. a second rotating lever; 26. a third rotating lever; 27. a third full gear; 28. a fourth full gear; 29. a fourth rotating lever; 3. a support plate; 31. a concave frame; 32. a roller; 33. a sliding plate; 34. a first connection block; 35. an arc-shaped block; 36. an air bag; 37. a connecting pipe; 38. a second connection block; 4. a total sleeve; 41. welding the pipe; 5. a sleeve; 51. a limit rod; 52. a first load-bearing bar; 53. a second load-bearing bar; 54. a cylindrical cam; 55. a slide block; 56. a pressure sensitive switch; 57. a special-shaped rod; 6. a second piston cylinder; 61. a second piston rod; 62. a second sealing plug; 63. a first air inlet pipe; 64. a first gas pipe; 65. a one-way valve; 66. a first piston cylinder; 67. a first piston rod; 68. a push plate; 69. a first sealing plug; 7. a telescopic rod sleeve; 71. a telescopic rod; 72. a first support block; 73. a stop block; 74. a welding gun; 75. a second air inlet pipe; 76. a second gas pipe; 78. a spring; 79. a nozzle; 8. an elliptical plate; 81. a second support block; 82. a crank; 83. a support rod; 84. a push rod; 85. round bench; 9. a third piston cylinder; 91. a third piston rod; 92. a third sealing plug; 93. a third air inlet pipe; 94. and a third gas pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides a technical scheme that: the utility model provides an automatic change steel pipe welding machine, including bearing plate 1 and welder 74, fixedly connected with two backup pads 3 and support frame 11 on the bearing plate 1, all fixedly connected with a plurality of spill frames 31 on the opposite face of two backup pads 3, all be connected with the gyro wheel 32 that is used for centre gripping total sleeve 4 and assists the slip through the round pin axle rotation on every spill frame 31, be equipped with intermittent type rotary mechanism on the lower surface of support frame 11, be equipped with the auxiliary mechanism that is used for confirming the diameter of welded tube 41 and centre gripping welded tube 41 on the backup pad 3, thereby be equipped with the pushing mechanism who is used for promoting total sleeve 4 so that can weld welded tube 41 on the support plate 1, be equipped with the welding mechanism who is used for welding welded tube 41 on total sleeve 4 on the intermittent type rotary mechanism.
During use, the total sleeve 4 is manually pushed along the roller 32 until the total sleeve 4 is propped against the push plate 68, then the welded pipe 41 is manually sleeved on the support sleeve, the roller 32 is arranged to achieve the effects of clamping the total sleeve 4 and facilitating the total sleeve 4 to slide, and then an external power source is started.
The external power source can be a motor, and the motor is an existing device, so the external power source is not shown in the figure, and when in use, the motor can be properly selected according to actual use conditions.
The intermittent rotating mechanism comprises a rotating shaft 2, a first rotating rod 24, a second rotating rod 25, a third rotating rod 26 and a fourth rotating rod 29 which are rotatably connected to the lower surface of the supporting frame 11, the rotating shaft 2 is fixedly connected with the output end of an external power source, a first complete gear 22, a second complete gear 23, a third complete gear 27 and a fourth complete gear 28 are fixedly connected to the arc-shaped outline of the first rotating rod 24, the second rotating rod 25, the third rotating rod 26 and the arc-shaped outline of the fourth rotating rod 29 respectively, the first complete gear 22 is meshed with the second complete gear 23, and a non-complete gear 21 which is alternately meshed with the first complete gear 22, the second complete gear 23, the third complete gear 27 and the fourth complete gear 28 is fixedly connected to the arc-shaped outline of the rotating shaft 2.
After the external power source is started, the rotating shaft 2 rotates synchronously, so that the incomplete gear 21 rotates, and the incomplete gear 21 is meshed with the first complete gear 22, the second complete gear 23, the third complete gear 27 and the fourth complete gear 28 alternately, so that the effect of no interference between the incomplete gear 21 and the first complete gear 22, the second complete gear 23, the third complete gear 27 and the fourth complete gear 28 is achieved.
The auxiliary mechanism comprises a sliding plate 33, sliding grooves are formed in the two supporting plates 3 and are in limiting sliding connection with the sliding plate 33 through the sliding grooves, four sliding grooves are formed in the sliding plate 33 and are in limiting sliding connection with first connecting blocks 34 through the four sliding grooves, arc-shaped blocks 35 are fixedly connected to each first connecting block 34, air bags 36 used for determining the diameter of a welding pipe 41 and clamping the welding pipe 41 are fixedly connected to each arc-shaped block 35, and every two air bags 36 are fixedly communicated through connecting pipes 37.
The auxiliary mechanism further comprises two limiting rods 51 fixedly connected to the first complete gear 22, the two limiting rods 51 are in limiting sliding connection with a sleeve 5, a sliding block 55 is fixedly connected to the inner wall of the sleeve 5, a first bearing rod 52 is fixedly connected to the bearing plate 1, a second bearing rod 53 penetrating through the sleeve 5 is fixedly connected to the first bearing rod 52, one end, far away from the first bearing rod 52, of the second bearing rod 53 is fixedly connected with a cylindrical cam 54, a sliding groove is formed in the cylindrical cam 54 and is in sliding connection with the sliding block 55 through the sliding groove, and a rotary groove is formed in the sliding plate 33 and is in limiting and rotating connection with the sleeve 5 through the rotary groove.
The auxiliary mechanism further comprises four special-shaped rods 57, one end, far away from the limiting rod 51, of the sleeve 5 is fixedly connected with four pin shafts, the sleeve 5 is rotationally connected with the four special-shaped rods 57 through the four pin shafts, each arc-shaped block 35 is fixedly connected with a pin shaft, and each arc-shaped block 35 is rotationally connected with the corresponding special-shaped rod 57 through the pin shaft.
When the sleeve 5 rotates and slides in the direction away from the first complete gear 22, the sliding plate 33 synchronously slides in the direction away from the first complete gear 22, and when the sleeve 5 rotates, the four first connecting blocks 34 drive the arc-shaped blocks 35 to synchronously slide towards one end close to the sleeve 5 through the cooperation of the four special-shaped rods 57, so that the four air bags 36 synchronously slide towards one end close to the sleeve 5, the welded pipe 41 on the support sleeve is fixed straight, and the diameters of the welded pipes 41 are different, so that the gas in the air bags 36 is kept different.
The larger the diameter of the welded pipe 41 is, the less the gas is retained in the airbag 36 so that a large amount of gas enters the telescopic rod sleeve 7 through the second gas inlet pipe 75, and thus the larger the sliding stroke of the stopper 73 and the telescopic rod 71 in the telescopic rod sleeve 7 is, and the smaller the diameter of the welded pipe 41 is, the more the gas is retained in the airbag 36 so that a small amount of gas enters the telescopic rod sleeve 7 through the second gas inlet pipe 75, and thus the smaller the sliding stroke of the stopper 73 and the telescopic rod 71 in the telescopic rod sleeve 7 is.
When the non-full gear 21 is meshed with the second full gear 23, the non-full gear 21 is not meshed with the first full gear 22 at this time, so that the second full gear 23 rotates, and the second full gear 23 is meshed with the first full gear 22, so that the first full gear 22 is reversed, and as can be seen from the above, the sleeve 5 slides in the direction approaching the first full gear 22 while reversing, so that the four air bags 36 synchronously slide towards one end far from the sleeve 5, and the effects of resetting the auxiliary mechanism and avoiding interference in the sliding of the total sleeve 4 are achieved.
The pushing mechanism comprises a first piston cylinder 66 fixedly connected to the bearing plate 1, a first sealing plug 69 is fixedly connected to the inner wall of the first piston cylinder 66, a first piston rod 67 is fixedly connected to the first sealing plug 69, and a pushing plate 68 for pushing the total sleeve 4 is fixedly connected to one end, away from the first sealing plug 69, of the first piston rod 67.
The pushing mechanism further comprises a second piston cylinder 6, a first air inlet pipe 63 and a first air delivery pipe 64, the second piston cylinder 6 is fixedly connected to the limiting rod 51, a second sealing plug 62 is fixedly connected to the inner wall of the second piston cylinder 6, a second piston rod 61 is fixedly connected to the second sealing plug 62, one end, far away from the second sealing plug 62, of the second piston rod 61 is fixedly connected with the sliding plate 33, the second piston cylinder 6 is fixedly communicated with the outside through the first air inlet pipe 63, the second piston cylinder 6 is fixedly communicated with the first piston cylinder 66 through the first air delivery pipe 64, and a check valve 65 is fixedly connected to the first air inlet pipe 63 and the first air delivery pipe 64.
When the sliding plate 33 slides downwards, the second piston rod 61 fixedly connected with the sliding plate drives the second sealing plug 62 to synchronously slide downwards in the second piston cylinder 6, and when the sliding plate 33 slides upwards, the second piston rod 61 fixedly connected with the sliding plate drives the second sealing plug 62 to synchronously slide upwards in the second piston cylinder 6, so that the second piston rod 61 drives the second sealing plug 62 to slide back and forth in the second piston cylinder 6, and further the air pressure in the second piston cylinder 6 changes back and forth.
When the second piston rod 61 and the second sealing plug 62 slide downwards in the second piston cylinder 6, negative pressure is generated under the cooperation of the check valve 65 on the first air inlet pipe 63, so that external air is sucked into the second piston cylinder 6 through the first air inlet pipe 63, when the second piston rod 61 and the second sealing plug 62 slide upwards in the second piston cylinder 6, high pressure is generated under the cooperation of the check valve 65 on the first air pipe 64, so that air in the second piston cylinder 6 is sent into the first piston cylinder 66 through the first air pipe 64, the first sealing plug 69 in the first piston cylinder 66 drives the first piston rod 67 to slide towards the direction of the total sleeve 4, and the push plate 68 pushes the total sleeve 4, so that the welding pipe 41 which fixes an auxiliary mechanism and determines the finished diameter is pushed to the welding mechanism, and welding is convenient.
The welding mechanism comprises a telescopic rod sleeve 7 fixedly connected to the third rotating rod 26, a stop block 73 is fixedly connected to the inner wall of the telescopic rod sleeve 7, a telescopic rod 71 is fixedly connected to the stop block 73, one end of the telescopic rod 71, which is far away from the stop block 73, is fixedly connected with a first supporting block 72, the first supporting block 72 is fixedly connected with a welding gun 74, the inner wall of the telescopic rod sleeve 7 is fixedly connected with a pressure-sensitive switch 56 which is matched with the stop block 73, the pressure-sensitive switch 56 is electrically connected with the welding gun 74, a spring 78 is sleeved on the telescopic rod 71, two ends of the spring 78 are fixedly connected with the stop block 73 and the telescopic rod sleeve 7 respectively, a second air inlet pipe 75 is fixedly connected to the telescopic rod sleeve 7, one end of the second air inlet pipe 75, which is far away from the telescopic rod sleeve 7, is fixedly connected with an air bag 36, a circular table groove is formed in the telescopic rod sleeve 7, and a circular table 85 is connected to the telescopic rod sleeve 7 in a limiting sliding manner through the circular table groove.
When the incomplete gear 21 is meshed with the third complete gear 27, the third complete gear 27 rotates, so that the third rotating rod 26 rotates, the telescopic rod sleeve 7 and the telescopic rod 71 synchronously rotate, the first supporting block 72 on the telescopic rod 71 synchronously rotates, the welding gun 74 synchronously rotates, and after the air of the air bag 36 is introduced into the telescopic rod sleeve 7, the air bag is in contact with the pressure-sensitive switch 56 when the stop block 73 slides, the welding gun 74 is electrically connected with the welding gun 74 through the pressure-sensitive switch 56, the welding gun 74 is in an operating state at the moment, the sliding stroke of the welding gun 74 is determined due to the amount of air transmission of the auxiliary mechanism, the welding path of the welding gun 74 is matched with the diameter of the welding pipe 41 when the welding gun 74 is welded, manual operation is not needed, and the welding pipes 41 with different diameters can be automatically welded, so that time and labor are saved.
Example two
The same as the first embodiment, further, the supporting frame 11 is provided with a blowing mechanism for cooling and cleaning the welded general sleeve 4 and the welded pipe 41, the blowing mechanism comprises a bearing block 12 fixedly connected to the supporting frame 11, a sliding groove is formed in the bearing block 12 and is in limiting sliding connection with a second supporting block 81 through the sliding groove, an elliptic plate 8 is fixedly connected to the second supporting block 81, a crank 82 is fixedly connected to the fourth rotating rod 29, a supporting rod 83 is fixedly connected to the crank 82, an elliptic groove is formed in the elliptic plate 8 and is in sliding connection with the supporting rod 83 through the elliptic groove, a pushing rod 84 is fixedly connected to the elliptic plate 8, the pushing rod 84 is fixedly connected with a circular table 85, a second air pipe 76 is fixedly connected to the circular table groove of the telescopic rod sleeve 7, a nozzle 79 is fixedly connected to the second air inlet pipe 75 and the second air pipe 76 are fixedly communicated with the one-way valve 65.
After the welding is completed, the non-complete gear 21 and the third complete gear 27 are disengaged, and the non-complete gear 21 and the fourth complete gear 28 are engaged, so that the fourth complete gear 28 rotates, and thus the fourth rotating rod 29 thereon rotates, and the crank 82 drives the supporting rod 83 to rotate, and because the supporting rod 83 is slidingly connected with the elliptical groove on the elliptical plate 8, the elliptical plate 8 drives the second supporting shoe 81 to slide reciprocally in the sliding groove on the bearing block 12, and thus the pushing rod 84 slides reciprocally.
When the push rod 84 slides to the telescopic rod sleeve 7, the round table 85 and the round table groove are in clearance fit, so that gas in the telescopic rod sleeve 7 is introduced into the second gas pipe 76 through the round table groove, then the gas in the second gas pipe 76 is sprayed on the welded pipe 41 through the nozzle 79, the effect of cooling the welded pipe 41 and cleaning impurities on the welded pipe is achieved, after the gas is discharged, the push rod 84 slides to the direction away from the telescopic rod sleeve 7, the round table 85 is matched with the round table groove, the tightness in the telescopic rod sleeve 7 is ensured, and the elasticity of the spring 78 is released at the moment, so that the stop block 73 and the telescopic rod 71 are reset, and the accuracy in the next welding is ensured.
Example III
Substantially the same as the second embodiment, further, the first connecting block 34 is provided with an air supplementing mechanism for supplementing air to the air bag 36 so as to facilitate the next use, the air supplementing mechanism comprises a second connecting block 38, a third air inlet pipe 93 and a third air inlet pipe 94, each second connecting block 38 is fixedly connected to the first connecting block 34, opposite surfaces of the two second connecting blocks 38 are respectively fixedly connected with a third piston cylinder 9 and a third piston rod 91, the inner wall of the third piston cylinder 9 is slidably connected with a third sealing plug 92, the third sealing plug 92 is fixedly connected with the third piston rod 91, the third piston cylinder 9 is fixedly connected with the outside through a third air inlet pipe 93, the third piston cylinder 9 is fixedly connected with the air bag 36 through a third air inlet pipe 94, and the third air inlet pipe 93 and the third air inlet pipe 94 are fixedly connected with the check valve 65.
When the first connecting block 34 slides reciprocally, when the first connecting block 34 slides towards the cylinder sleeve 5, the third piston rod 91 on the first connecting block drives the third sealing plug 92 to slide relatively towards the direction close to the cylinder sleeve 5 in the third piston cylinder 9, and when the first connecting block 34 slides towards the direction far away from the cylinder sleeve 5, the third piston rod 91 on the first connecting block drives the third sealing plug 92 to slide relatively towards the direction far away from the cylinder sleeve 5 in the third piston cylinder 9, so that the third piston rod 91 drives the third sealing plug 92 to slide reciprocally in the third piston cylinder 9, and the air pressure in the third piston cylinder 9 changes reciprocally.
When the third piston rod 91 and the third sealing plug 92 slide in the third piston cylinder 9 in a direction away from the third air inlet pipe 93, negative pressure is generated under the cooperation of the check valve 65 on the third air inlet pipe 93, so that external air is sucked into the third piston cylinder 9 through the third air inlet pipe 93, and when the third piston rod 91 and the third sealing plug 92 slide in the third piston cylinder 9 in the direction of the third air inlet pipe 93, high pressure is generated under the cooperation of the check valve 65 on the third air delivery pipe 94, so that air is delivered into the air bag 36 through the third air delivery pipe 94, and the air in the air bag 36 is supplemented, so that the air quantity in the air bag 36 is ensured, and the accuracy in welding is ensured.
Working principle: this automatic steel pipe welding machine, during the use, manual pushing total sleeve 4 along gyro wheel 32 is until total sleeve 4 offsets with push pedal 68, and then the manual welding pipe 41 cup joints on the branch sleeve pipe, has reached centre gripping total sleeve 4 and the gliding effect of total sleeve 4 of being convenient for through setting up gyro wheel 32, starts external power supply afterwards.
The external power source can be a motor, and the motor is an existing device, so the external power source is not shown in the figure, and when in use, the motor can be properly selected according to actual use conditions.
After the external power source is started, the rotating shaft 2 rotates synchronously, so that the incomplete gear 21 rotates, and the incomplete gear 21 is meshed with the first complete gear 22, the second complete gear 23, the third complete gear 27 and the fourth complete gear 28 alternately, so that the effect of no interference between the incomplete gear 21 and the first complete gear 22, the second complete gear 23, the third complete gear 27 and the fourth complete gear 28 is achieved.
When the incomplete gear 21 is meshed with the first complete gear 22, the first complete gear 22 is rotated, so that the two limiting rods 51 on the first complete gear 22 rotate synchronously, the sleeve 5 rotates synchronously due to the limiting sliding connection of the sleeve 5 and the limiting rods 51, the sliding block 55 on the sleeve 5 rotates synchronously, and the sleeve 5 slides in a direction away from the first complete gear 22 while rotating due to the sliding connection of the sliding block 55 and the sliding groove on the cylindrical cam 54.
When the sleeve 5 rotates and slides in the direction away from the first complete gear 22, the sliding plate 33 synchronously slides in the direction away from the first complete gear 22, and when the sleeve 5 rotates, the four first connecting blocks 34 drive the arc-shaped blocks 35 to synchronously slide towards one end close to the sleeve 5 through the cooperation of the four special-shaped rods 57, so that the four air bags 36 synchronously slide towards one end close to the sleeve 5, the welded pipe 41 on the support sleeve is fixed straight, and the diameters of the welded pipes 41 are different, so that the gas in the air bags 36 is kept different.
The larger the diameter of the welded pipe 41 is, the less the gas is retained in the airbag 36 so that a large amount of gas enters the telescopic rod sleeve 7 through the second gas inlet pipe 75, and thus the larger the sliding stroke of the stopper 73 and the telescopic rod 71 in the telescopic rod sleeve 7 is, and the smaller the diameter of the welded pipe 41 is, the more the gas is retained in the airbag 36 so that a small amount of gas enters the telescopic rod sleeve 7 through the second gas inlet pipe 75, and thus the smaller the sliding stroke of the stopper 73 and the telescopic rod 71 in the telescopic rod sleeve 7 is.
When the non-full gear 21 is meshed with the second full gear 23, the non-full gear 21 is not meshed with the first full gear 22 at this time, so that the second full gear 23 rotates, and the second full gear 23 is meshed with the first full gear 22, so that the first full gear 22 is reversed, and as can be seen from the above, the sleeve 5 slides in the direction approaching the first full gear 22 while reversing, so that the four air bags 36 synchronously slide towards one end far from the sleeve 5, and the effects of resetting the auxiliary mechanism and avoiding interference in the sliding of the total sleeve 4 are achieved.
When the sliding plate 33 slides downwards, the second piston rod 61 fixedly connected with the sliding plate drives the second sealing plug 62 to synchronously slide downwards in the second piston cylinder 6, and when the sliding plate 33 slides upwards, the second piston rod 61 fixedly connected with the sliding plate drives the second sealing plug 62 to synchronously slide upwards in the second piston cylinder 6, so that the second piston rod 61 drives the second sealing plug 62 to slide back and forth in the second piston cylinder 6, and further the air pressure in the second piston cylinder 6 changes back and forth, which is described in detail as follows:
in the above, when the second piston rod 61 and the second sealing plug 62 slide downwards in the second piston cylinder 6, negative pressure is generated under the cooperation of the check valve 65 on the first air inlet pipe 63, so that external air is sucked into the second piston cylinder 6 through the first air inlet pipe 63, when the second piston rod 61 and the second sealing plug 62 slide upwards in the second piston cylinder 6, high pressure is generated under the cooperation of the check valve 65 on the first air delivery pipe 64, so that air in the second piston cylinder 6 is delivered into the first piston cylinder 66 through the first air delivery pipe 64, the first sealing plug 69 in the first piston cylinder 66 drives the first piston rod 67 to slide towards the direction of the total sleeve 4, so that the push plate 68 pushes the total sleeve 4, and the welding pipe 41 which fixes the auxiliary mechanism and determines the finished diameter is pushed to the welding mechanism, thereby facilitating welding.
When the incomplete gear 21 is meshed with the third complete gear 27, the third complete gear 27 rotates, so that the third rotating rod 26 rotates, the telescopic rod sleeve 7 and the telescopic rod 71 synchronously rotate, the first supporting block 72 on the telescopic rod 71 synchronously rotates, the welding gun 74 synchronously rotates, and after the air of the air bag 36 is introduced into the telescopic rod sleeve 7, the air bag is in contact with the pressure-sensitive switch 56 when the stop block 73 slides, the welding gun 74 is electrically connected with the welding gun 74 through the pressure-sensitive switch 56, the welding gun 74 is in an operating state at the moment, the sliding stroke of the welding gun 74 is determined due to the amount of air transmission of the auxiliary mechanism, the welding path of the welding gun 74 is matched with the diameter of the welding pipe 41 when the welding gun 74 is welded, manual operation is not needed, and the welding pipes 41 with different diameters can be automatically welded, so that time and labor are saved.
After the welding is completed, the non-complete gear 21 and the third complete gear 27 are disengaged, and the non-complete gear 21 and the fourth complete gear 28 are engaged, so that the fourth complete gear 28 rotates, and thus the fourth rotating rod 29 thereon rotates, and the crank 82 drives the supporting rod 83 to rotate, and because the supporting rod 83 is slidingly connected with the elliptical groove on the elliptical plate 8, the elliptical plate 8 drives the second supporting shoe 81 to slide reciprocally in the sliding groove on the bearing block 12, and thus the pushing rod 84 slides reciprocally.
When the push rod 84 slides to the telescopic rod sleeve 7, the round table 85 and the round table groove are in clearance fit, so that gas in the telescopic rod sleeve 7 is introduced into the second gas pipe 76 through the round table groove, then the gas in the second gas pipe 76 is sprayed on the welded pipe 41 through the nozzle 79, the effect of cooling the welded pipe 41 and cleaning impurities on the welded pipe is achieved, after the gas is discharged, the push rod 84 slides to the direction away from the telescopic rod sleeve 7, the round table 85 is matched with the round table groove, the tightness in the telescopic rod sleeve 7 is ensured, and the elasticity of the spring 78 is released at the moment, so that the stop block 73 and the telescopic rod 71 are reset, and the accuracy in the next welding is ensured.
When the first connecting block 34 slides reciprocally, when the first connecting block 34 slides towards the sleeve 5, the third piston rod 91 on the first connecting block drives the third sealing plug 92 to slide relatively in the direction close to the sleeve 5 in the third piston cylinder 9, and when the first connecting block 34 slides towards the direction far away from the sleeve 5, the third piston rod 91 on the first connecting block drives the third sealing plug 92 to slide relatively in the direction far away from the sleeve 5 in the third piston cylinder 9, so that the third piston rod 91 drives the third sealing plug 92 to slide reciprocally in the third piston cylinder 9, and then the air pressure in the third piston cylinder 9 changes reciprocally, which is described in detail as follows:
in the above, when the third piston rod 91 and the third sealing plug 92 slide in the third piston cylinder 9 in a direction away from the third air inlet pipe 93, under the cooperation of the check valve 65 on the third air inlet pipe 93, negative pressure is generated, so that external air is sucked into the third piston cylinder 9 through the third air inlet pipe 93, and when the third piston rod 91 and the third sealing plug 92 slide in the third piston cylinder 9 in a direction of the third air inlet pipe 93, high pressure is generated under the cooperation of the check valve 65 on the third air delivery pipe 94, so that air is delivered into the air bag 36 through the third air delivery pipe 94, so that the air in the air bag 36 is supplemented, the air quantity in the air bag 36 is ensured, and the accuracy in welding is ensured.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An automatic steel pipe welding machine, includes bearing plate (1) and welder (74), its characterized in that: two supporting plates (3) and supporting frames (11) are fixedly connected to the bearing plate (1), a plurality of concave frames (31) are fixedly connected to opposite faces of the two supporting plates (3), each concave frame (31) is rotatably connected with a roller (32) used for clamping a general sleeve (4) and assisting sliding through a pin shaft, an intermittent rotating mechanism is arranged on the lower surface of the supporting frame (11), an auxiliary mechanism used for determining the diameter of a welded pipe (41) and clamping the welded pipe (41) is arranged on the supporting plate (3), a pushing mechanism used for pushing the general sleeve (4) so as to enable the welded pipe (41) to be welded is arranged on the bearing plate (1), and a welding mechanism used for welding the welded pipe (41) on the general sleeve (4) is arranged on the intermittent rotating mechanism;
the intermittent rotating mechanism comprises a rotating shaft (2), a first rotating rod (24), a second rotating rod (25), a third rotating rod (26) and a fourth rotating rod (29) which are rotatably connected to the lower surface of a supporting frame (11), the rotating shaft (2) is fixedly connected with the output end of an external power source, a first complete gear (22), a second complete gear (23), a third complete gear (27) and a fourth complete gear (28) are fixedly connected to the arc-shaped outline of the first rotating rod (24), the second rotating rod (25), the third rotating rod (26) and the fourth rotating rod (29) respectively, the first complete gear (22) is meshed with the second complete gear (23), and a non-complete gear (21) which is alternately meshed with the first complete gear (22), the second complete gear (23), the third complete gear (27) and the fourth complete gear (28) is fixedly connected to the arc-shaped outline of the rotating shaft (2);
the auxiliary mechanism comprises sliding plates (33), wherein the two supporting plates (3) are provided with sliding grooves and are in limiting sliding connection with the sliding plates (33) through the sliding grooves, the sliding plates (33) are provided with four sliding grooves and are in limiting sliding connection with first connecting blocks (34) through the four sliding grooves, each first connecting block (34) is fixedly connected with an arc-shaped block (35), each arc-shaped block (35) is fixedly connected with an air bag (36) for determining the diameter of a welding pipe (41) and clamping the welding pipe (41), and each two air bags (36) are fixedly communicated through connecting pipes (37);
the auxiliary mechanism further comprises two limiting rods (51) fixedly connected to the first complete gear (22), the two limiting rods (51) are connected with a sleeve (5) in a limiting sliding manner, a sliding block (55) is fixedly connected to the inner wall of the sleeve (5), a first bearing rod (52) is fixedly connected to the bearing plate (1), a second bearing rod (53) penetrating the sleeve (5) is fixedly connected to the first bearing rod (52), a cylindrical cam (54) is fixedly connected to one end, far away from the first bearing rod (52), of the second bearing rod (53), a sliding groove is formed in the cylindrical cam (54) and is connected with the sliding block (55) in a sliding manner, and a rotary groove is formed in the sliding plate (33) and is connected with the sleeve (5) in a limiting rotation manner through the rotary groove;
the auxiliary mechanism further comprises four special-shaped rods (57), one end, far away from the limiting rod (51), of the sleeve (5) is fixedly connected with four pin shafts, the sleeve (5) is rotationally connected with the four special-shaped rods (57) through the four pin shafts, each arc-shaped block (35) is fixedly connected with a pin shaft, and each arc-shaped block (35) is rotationally connected with the corresponding special-shaped rod (57) through the pin shaft;
the welding mechanism comprises a telescopic rod sleeve (7) fixedly connected to a third rotating rod (26), a stop block (73) is fixedly connected to the inner wall of the telescopic rod sleeve (7), a telescopic rod (71) is fixedly connected to the stop block (73), a first supporting block (72) is fixedly connected to one end of the telescopic rod (71) away from the stop block (73), the first supporting block (72) is fixedly connected with a welding gun (74), a pressure-sensitive switch (56) matched with the stop block (73) is fixedly connected to the inner wall of the telescopic rod sleeve (7), a spring (78) is sleeved on the telescopic rod (71), two ends of the spring (78) are respectively fixedly connected with the stop block (73) and the telescopic rod sleeve (7), a second air inlet pipe (75) is fixedly connected to the telescopic rod sleeve (7), one end of the second air inlet pipe (75) away from the telescopic rod sleeve (7) is fixedly connected with an air bag (36), and a circular groove (85) is formed in the telescopic rod sleeve (7) and is formed in a circular groove through a circular groove (85).
2. An automated steel pipe welder according to claim 1, wherein: the pushing mechanism comprises a first piston cylinder (66) fixedly connected to the bearing plate (1), a first sealing plug (69) is fixedly connected to the inner wall of the first piston cylinder (66), a first piston rod (67) is fixedly connected to the first sealing plug (69), and a pushing plate (68) for pushing the total sleeve (4) is fixedly connected to one end, far away from the first sealing plug (69), of the first piston rod (67).
3. An automated steel pipe welder according to claim 2, wherein: the pushing mechanism further comprises a second piston cylinder (6), a first air inlet pipe (63) and a first air delivery pipe (64), the second piston cylinder (6) is fixedly connected to the limiting rod (51), a second sealing plug (62) is fixedly connected to the inner wall of the second piston cylinder (6), a second piston rod (61) is fixedly connected to the second sealing plug (62), one end, far away from the second sealing plug (62), of the second piston rod (61) is fixedly connected with the sliding plate (33), the second piston cylinder (6) is fixedly communicated with the outside through the first air inlet pipe (63), the second piston cylinder (6) is fixedly communicated with the first piston cylinder (66) through the first air delivery pipe (64), and one-way valves are fixedly connected to the first air inlet pipe (63) and the first air delivery pipe (64).
4. An automated steel pipe welder according to claim 3, wherein: be equipped with on support frame (11) and be used for carrying out cooling down clean mechanism of blowing with total sleeve pipe (4) and welded tube (41) of welding completion, mechanism of blowing is including supporting piece (12) of fixed connection on support frame (11), spout and through this spout spacing sliding connection's second supporting shoe (81) have been seted up on supporting piece (12), fixedly connected with elliptic plate (8) on second supporting shoe (81), fixedly connected with crank (82) on fourth dwang (29), fixedly connected with bracing piece (83) on crank (82), elliptic groove and through elliptic groove and bracing piece (83) sliding connection have been seted up on elliptic plate (8), fixedly connected with catch bar (84) on elliptic plate (8), catch bar (84) and round platform (85) fixed connection, fixedly connected with second air inlet tube (76) are located in the round platform of telescopic rod cover (7), fixedly connected with nozzle (79) on second air inlet tube (76), second air inlet tube (75) and second air inlet tube (76) all communicate with air-supply valve fixed connection.
5. An automated steel pipe welder according to claim 1, wherein: the air supplementing mechanism is used for supplementing air to the air bag (36) and is convenient to use next time, the air supplementing mechanism comprises a second connecting block (38), a third air inlet pipe (93) and a third air conveying pipe (94), each second connecting block (38) is fixedly connected to the first connecting block (34), the opposite faces of the second connecting block (38) are fixedly connected with a third piston cylinder (9) and a third piston rod (91) respectively, a third sealing plug (92) is slidably connected to the inner wall of the third piston cylinder (9), the third sealing plug (92) is fixedly connected with the third piston rod (91), the third piston cylinder (9) is fixedly communicated with the outside through a third air inlet pipe (93), the third piston cylinder (9) is fixedly communicated with the air bag (36) through the third air conveying pipe (94), and the third air inlet pipe (93) and the third air conveying pipe (94) are fixedly communicated with a check valve.
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| CN111451626A (en) * | 2020-04-21 | 2020-07-28 | 李志军 | Automatic change brass cover spot welding making devices |
| CN212599664U (en) * | 2020-06-22 | 2021-02-26 | 苏州迅博激光科技有限公司 | Positioning fixture for laser spot welding of electronic parts |
| CN113834928A (en) * | 2021-09-23 | 2021-12-24 | 吉林大学 | Early liver cancer inspection equipment convenient to operation |
| CN113878277A (en) * | 2021-11-24 | 2022-01-04 | 德州职业技术学院（德州市技师学院） | Automatic change welding industrial robot |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11286138B2 (en) * | 2019-11-07 | 2022-03-29 | Zhejiang Runva Mechanical & Electrical Co., Ltd | Winch and brake unit with sliding blocks |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451626A (en) * | 2020-04-21 | 2020-07-28 | 李志军 | Automatic change brass cover spot welding making devices |
| CN212599664U (en) * | 2020-06-22 | 2021-02-26 | 苏州迅博激光科技有限公司 | Positioning fixture for laser spot welding of electronic parts |
| CN113834928A (en) * | 2021-09-23 | 2021-12-24 | 吉林大学 | Early liver cancer inspection equipment convenient to operation |
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