CN112404764A - Automatic welding method for metal sheet - Google Patents
Automatic welding method for metal sheet Download PDFInfo
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- CN112404764A CN112404764A CN202011194553.7A CN202011194553A CN112404764A CN 112404764 A CN112404764 A CN 112404764A CN 202011194553 A CN202011194553 A CN 202011194553A CN 112404764 A CN112404764 A CN 112404764A
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- welding
- groove
- metal sheet
- portal frame
- positioning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- B23K31/027—Making tubes with 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
Abstract
The invention provides an automatic welding method of a metal sheet, wherein an automatic welding device used in the method comprises a welding table, wherein a first sliding rail, a first portal frame, a second portal frame, a groove, a conveying belt, a first hydraulic press and a clamping mechanism are sequentially arranged on the welding table; the automatic welding device for the metal sheets is characterized in that the outer surfaces of the front end and the rear end of the welding table are arranged on the first sliding rails, the first portal frame is movably installed on one side between the two first sliding rails, the second portal frame is movably installed on the other side between the two first sliding rails, the groove is formed in the middle of the outer surface of the upper end of the welding table, the conveying belt is movably installed inside the groove, the automatic welding device for the metal sheets is convenient to clamp the sheets, the sheets are not prone to deformation in the clamping process and are neatly spliced, welding quality is improved, the welding gun is protected, the service life of the welding gun is prolonged, spark splashing around during welding can be prevented, welding slags can be cleaned simultaneously, and the cleanness and tidiness of.
Description
Technical Field
The invention relates to the technical field of automatic welding, in particular to an automatic welding method of a metal sheet.
Background
In the field of manufacturing industry in China, metal sheets with large areas are often used, especially in the automobile manufacturing industry, the requirement for the metal sheets is extremely high and is limited by the manufacturing level of the metal sheets, the manufacturing cost of the large-area metal sheets is high, and the investment is not in direct proportion to the return, so that the metal sheets are greatly limited, and in order to solve the problem, technical personnel in the field usually splice different metal sheets;
the Chinese patent discloses corrugated board automatic welding equipment, the patent application number is CN201820100631.4, the equipment comprises an automatic feeding device, the tail end of the automatic feeding device is provided with a front automatic welding device, the tail end of the front automatic welding device is provided with a back automatic welding device, and the tail end of the back automatic welding device is provided with an automatic discharging device; the front automatic welding device and the back automatic welding device both comprise a roller conveying device, a turnover clamping device and an automatic welding machine; automatic sensors are arranged on the automatic feeding device, the front automatic welding device, the back automatic welding device and the automatic discharging device. The automatic welding equipment for the corrugated board adopts the automatic control technology to accurately control the conveying speed, greatly improves the production efficiency and the welding precision, and saves the manpower, the material resources and the financial resources;
although the device can accurately control the conveying speed, the production efficiency and the welding precision are greatly improved, when the metal sheet is welded, the sheet is easy to deform in the clamping process, the welding quality is influenced, a welding head cannot be protected and is easy to damage, welding slag is not easy to clean, and the cleanness and tidiness of a welding platform are influenced.
Disclosure of Invention
The invention aims to provide an automatic welding method of a metal sheet, the automatic welding device of the metal sheet is convenient for clamping the metal sheet, the metal sheet is not easy to deform in the clamping process, the metal sheet is orderly spliced, the welding quality is improved, a welding gun is protected, the service life of the welding gun is prolonged, sparks can be prevented from splashing around during welding, welding slag can be cleaned at the same time, and the cleanness of a welding platform is guaranteed.
The invention provides an automatic welding method of a metal sheet, which comprises the following steps:
s1, for the coiled sheet material, firstly, uncoiling and uncoiling the coiled metal sheet through an uncoiling device;
s2, guiding the metal sheet unfolded in the step S1 into a hemming forming device, and hemming the side face, needing to be welded, of the metal sheet and the opposite side face of the metal sheet upwards symmetrically to the same height through hemming forming;
s3, tiling at least two metal sheets hemmed in the step S2 side by side, aligning adjacent hems of the metal sheets, positioning and clamping the metal sheets through a clamping mechanism of an automatic welding device, and melting and welding the hems to be welded into a whole;
s4, cleaning the welding seams of the metal sheet welded in the step S3 and polishing the welding seams to be flush with the metal sheet;
the automatic welding device comprises a welding table, wherein a first sliding rail, a first portal frame, a second portal frame, a groove, a conveying belt, a first hydraulic press and a clamping mechanism are sequentially arranged on the welding table;
the first sliding rails are arranged on the outer surfaces of the front end and the rear end of the welding table, the first portal frame is movably arranged on one side between the two first sliding rails, the second portal frame is movably arranged on the other side between the two first sliding rails, the groove is formed in the middle position of the outer surface of the upper end of the welding table, the conveying belt is movably arranged in the groove, the first hydraulic press is movably arranged on the middle position of the front end and the rear end of the outer surface of the upper end of the welding table, and the clamping mechanism is movably arranged at one end, close to the groove, of the first hydraulic press;
the first portal frame comprises a second slide rail, a second hydraulic device and a sucker, the second slide rail is arranged on two sides of the outer surface of the lower end of the first portal frame, the second hydraulic device is movably arranged on the second slide rail, and the sucker is movably arranged at the lower end of the second hydraulic device;
the clamping mechanism comprises a clamping groove, a limiting groove, a positioning spring piece and a fixing seat, the clamping groove is formed in the middle position of the outer surface of one end, close to the groove, of the clamping mechanism, the limiting groove is formed in the inner surface of the clamping groove, the positioning spring piece is movably mounted on two sides of the outer surface of the upper end of the clamping mechanism and far away from one end of the groove, the fixing seat is movably mounted on the upper end of the positioning spring piece, and the fixing seat penetrates through the positioning spring piece and the clamping mechanism and is movably connected with.
When the device works, the first portal frame moves to the middle position of the welding table along the first sliding rail, then the metal sheet is conveyed to the middle position of the welding table through the conveyor belt, the metal sheet is positioned under the first portal frame, then one of the second hydraulic devices moves to the position right above the metal sheet along the second sliding rail, the second hydraulic device pushes the sucker to move downwards so that the sucker sucks the metal sheet, then the second hydraulic device drives the metal sheet to move upwards so that the metal sheet and the limiting groove on the clamping mechanism are positioned on the same horizontal plane, then the second hydraulic device drives the metal sheet to move forwards along the second sliding rail so that the metal sheet is clamped into the limiting groove on the front end clamping mechanism, then the second hydraulic device continues to move forwards along the second sliding rail, and the metal sheet is positioned in the limiting groove so that the sucker and the metal sheet generate dislocation force under the driving of the second hydraulic device, so that the sucking disc is separated from the metal sheet, the positioning spring piece on the clamping mechanism compresses the metal phase of the metal sheet from two sides of the upper end of the metal sheet at the moment, so that the metal sheet is kept flat, the influence of the bending of the metal sheet on the welding quality is avoided, meanwhile, the contact surface of the positioning spring piece and the metal sheet is an arc surface, the abrasion of the positioning spring piece on the metal sheet is greatly reduced, then, the other metal sheet is conveyed to the position under the first portal frame through a conveyor belt, the other second hydraulic press moves to the position over the metal sheet along the second slide rail, the step of the first hydraulic press is repeated to suck and lift the metal sheet, then, the metal sheet moves backwards along the second slide rail, so that the metal sheet is positioned in the limiting groove on the rear end clamping mechanism, then, the first hydraulic press pushes the front and rear end clamping mechanisms to move towards the groove direction until, so that the two metal sheets are aligned, the first portal frame moves to one side along the first slide rail, the second portal frame moves to one side along the first slide rail to the position right above the metal sheets, then the metal sheets are welded through a welding gun, the second portal frame resets after the welding is finished, the first portal frame moves to the position right above the metal sheets along the first slide rail again, the two second hydraulic devices move to the positions right above the two metal sheets along the second slide rail respectively and push the suckers to move downwards, the two metal sheets are respectively sucked and fixed by the two suckers, finally the first hydraulic device drives the two clamping mechanisms to reset, the metal sheets are separated from the limiting grooves when the clamping mechanisms move due to the fixation of the metal sheets by the suckers, the two second hydraulic devices move along the slide rails in opposite directions, so that the suckers generate a malposition force with the metal sheets under the driving of the second hydraulic devices, thereby make sucking disc and sheet metal separation, two sheet metals after the welding break away from on the conveyer belt because of gravity falls under the sucking circumstances of sucking disc, then convey by the conveyer belt and break away from the welding bench, accomplish sheet metal's welding work promptly.
Preferably, one end of the clamping groove close to the groove is splayed, the positioning spring piece is V-shaped, and the V-shaped surface at the lower end of the positioning spring piece is arc-shaped.
The clamping groove is in a shape close to one end of the groove, so that the splicing positions of the two metal sheets are exposed outside, welding is convenient, and the contact surface of the positioning spring piece and the metal sheets is an arc surface, so that the abrasion of the positioning spring piece to the metal sheets is greatly reduced.
Preferably, the conveyer belt is that the upper end surface is equipped with the location track, and the orbital upper end surface of location has the rubber pad to glue, the constant head tank has all been seted up to fixture's one end surface both sides that are close to the recess, the location track runs through in the inside of constant head tank, location track and constant head tank are the T font, and is three interval between the location track is the same with the length of foil and centre gripping groove.
When the clamping mechanism moves towards the groove direction, the positioning rail on the conveying belt can be clamped into the positioning groove on the clamping mechanism, the clamping mechanism is kept stable on the horizontal plane through the mutual matching of the positioning rail and the positioning groove, and meanwhile, the positioning rail and the positioning groove are in a T shape, so that the vertical direction of the clamping mechanism is also limited to move after the positioning rail and the positioning groove are clamped, and the two clamping mechanisms are finally and orderly leaned together, the neatness of the metal sheet splicing is ensured.
Preferably, the second portal frame comprises a protection mechanism, an air pump and a conduit, the protection mechanism is fixedly installed at the middle position of the outer surface of the lower end of the second portal frame, the air pump is fixedly installed at the rear end position of the outer surface of the lower end of the second portal frame, the conduit is movably installed between the air pump and the protection mechanism, the protection mechanism comprises an accommodating cavity, a piston, a welding gun, a welding port, a shielding mechanism and a dust collection mechanism, the accommodating cavity is arranged at the upper end of the inner part of the protection mechanism, the piston is movably installed in the accommodating cavity, the welding gun is movably installed at the lower end of the piston, the welding port is arranged at the middle position of the outer surface of the protection mechanism, the shielding mechanism is movably installed at the lower end position of the outer surface of the.
Because welder exposes and suffers the damage outside easily, consequently accessible protection agency protects the welder, when needs welding, the air pump passes through the pipe and pours into gas into to the inside appearance chamber of protection agency, the inside piston in appearance chamber is promoted downwards under atmospheric pressure, and the welder of piston lower extreme follows the piston and moves down, stretch out protection agency's outside through the weld joint, until contacting with sheet metal, thereby begin to weld, after the welding, the air pump is taking out the inside air in appearance chamber through the pipe, make the piston move up along appearance chamber, and welder follows the piston and shifts up and finally contract to protection agency's inside, protect the welder through protection agency, avoid welder to suffer the damage, welder's life has been prolonged.
Preferably, the dust collection mechanism comprises a dust collection groove, a filter screen, a fall-back prevention head and a dust collection port, the dust collection groove is formed around the lower end of the inner portion of the protection mechanism, the filter screen is movably mounted at the upper end of the inner portion of the dust collection groove, the fall-back prevention head is movably mounted at the lower end of the inner portion of the dust collection groove, the dust collection port is formed around the outer surface of the lower end of the protection mechanism, the dust collection groove is communicated with the accommodating cavity, the fall-back prevention head is conical, and the diameter of the upper end of the fall-back prevention head is smaller than the diameter of.
Because can produce the welding slag in welding process, these welding slags untimely clear up can pollute the welding bench, welding quality after can influencing even, consequently accessible dust absorption mechanism clears up these welding slags, after the welding, the air pump is managed to find time with the air that holds intracavity portion through the pipe, the piston is along holding chamber rebound, the piston produces suction this moment and can be inhaled external air to the dust collecting tank through the dust absorption mouth, and the welding slag can be followed the air current and is inhaled to the dust collecting tank in, utilize the filter screen to prevent that the welding slag from being inhaled and influence the normal motion of piston in holding the chamber, and the toper is prevented that the fall-back head can prevent to get into the welding slag of dust collecting tank and is falling back to the welding bench through the dust absorption mouth, the clean and tidy of welding bench has been ensured.
Preferably, shelter from the mechanism and include baffle, hinge, haulage rope and folded sheet, the quantity of baffle is four, four baffle movable mounting is in protection machanism's surface lower extreme position all around, hinge movable mounting is between the upper end surface of baffle and protection machanism, haulage rope movable mounting is between one side surface lower extreme position and the piston that protection machanism was kept away from to the baffle, folded sheet movable mounting is between adjacent baffle, the folded sheet is fan-shaped.
Owing to can produce the spark in welding process, these sparks splash and can cause the burn on the human body, therefore the accessible shelters from the mechanism and shelters from the spark, in operation, the air pump passes through the pipe and injects the air into to holding the chamber, thereby push the piston down along holding the chamber under the promotion of atmospheric pressure, can stimulate the haulage rope when the piston moves down, thereby through haulage rope pulling baffle, make the baffle rotate through the hinge and expand, expand the back when the baffle, can form fan-shaped clearance between the adjacent baffle, close the clearance through fan-shaped folded sheet this moment, make and shelter from the mechanism and form circular fender cover, thereby the spark that produces when welding shelters from, security when having increased the welding.
Advantageous effects
1. The first portal frame moves to the middle position of the welding table along the first sliding rail, then the metal sheet is conveyed to the middle position of the welding table through the conveyor belt, the metal sheet is positioned under the first portal frame, then one of the second hydraulic devices moves to the position right above the metal sheet along the second sliding rail, the second hydraulic device pushes the sucker to move downwards, so that the sucker sucks the metal sheet, then the second hydraulic device drives the metal sheet to move upwards, so that the metal sheet and the limiting groove on the clamping mechanism are positioned on the same horizontal plane, then the second hydraulic device drives the metal sheet to move forwards along the second sliding rail, so that the metal sheet is clamped into the limiting groove on the front end clamping mechanism, then the second hydraulic device continues to move forwards along the second sliding rail, and the metal sheet is positioned in the limiting groove, so that the sucker and the metal sheet generate dislocation force under the driving of the second hydraulic device, so that the sucking disc is separated from the metal sheet, the positioning spring piece on the clamping mechanism compresses the metal phase of the metal sheet from two sides of the upper end of the metal sheet at the moment, so that the metal sheet is kept flat, the influence of the bending of the metal sheet on the welding quality is avoided, meanwhile, the contact surface of the positioning spring piece and the metal sheet is an arc surface, the abrasion of the positioning spring piece on the metal sheet is greatly reduced, then, the other metal sheet is conveyed to the position under the first portal frame through a conveyor belt, the other second hydraulic press moves to the position over the metal sheet along the second slide rail, the step of the first hydraulic press is repeated to suck and lift the metal sheet, then, the metal sheet moves backwards along the second slide rail, so that the metal sheet is positioned in the limiting groove on the rear end clamping mechanism, then, the first hydraulic press pushes the front and rear end clamping mechanisms to move towards the groove direction until, so that the two metal sheets are aligned, the first portal frame moves to one side along the first slide rail, the second portal frame moves to one side along the first slide rail to the position right above the metal sheets, then the metal sheets are welded through a welding gun, the second portal frame resets after the welding is finished, the first portal frame moves to the position right above the metal sheets along the first slide rail again, the two second hydraulic devices move to the positions right above the two metal sheets along the second slide rail respectively and push the suckers to move downwards, the two metal sheets are respectively sucked and fixed by the two suckers, finally the first hydraulic device drives the two clamping mechanisms to reset, the metal sheets are separated from the limiting grooves when the clamping mechanisms move due to the fixation of the metal sheets by the suckers, the two second hydraulic devices move along the slide rails in opposite directions, so that the suckers generate a malposition force with the metal sheets under the driving of the second hydraulic devices, the two welded metal sheets fall onto the conveying belt due to gravity under the condition that the two metal sheets are separated from the suction of the suction disc, and then are conveyed to the separation welding table by the conveying belt, so that the welding work of the metal sheets is completed;
2. when the clamping mechanism moves towards the groove direction, the positioning rail on the conveying belt can be clamped into the positioning groove on the clamping mechanism, the clamping mechanism is kept stable on the horizontal plane through the mutual matching of the positioning rail and the positioning groove, and meanwhile, the positioning rail and the positioning groove are in a T shape, so that the vertical direction of the clamping mechanism is also limited to move after the positioning rail and the positioning groove are clamped, and the two clamping mechanisms are finally and orderly leaned together, the neatness of the metal sheets is ensured;
3. because the welding gun is exposed outside and easily damaged, the welding gun can be protected by the protection mechanism, when welding is needed, the air pump injects air into the cavity in the protection mechanism through the guide pipe, the piston in the cavity is pushed downwards under the pushing of air pressure, the welding gun at the lower end of the piston moves downwards along with the piston and extends out of the protection mechanism through the welding port until contacting with the metal sheet, so as to start welding, after welding is finished, the air pump pumps out the air in the cavity through the guide pipe, so that the piston moves upwards along the cavity, the welding gun moves upwards along with the piston and finally contracts into the protection mechanism, the welding gun is protected by the protection mechanism, the welding gun is prevented from being damaged, the service life of the welding gun is prolonged, welding slag can be generated in the welding process, the welding slag can pollute a welding table and even influence the welding quality after the welding slag is not cleaned in time, therefore, the welding slag can be cleaned through the dust absorption mechanism, after welding is finished, air in the cavity is pumped out through the guide pipe by the air pump, the piston moves upwards along the cavity, the piston generates suction force to suck external air into the dust collection groove through the dust absorption opening, the welding slag is sucked into the dust collection groove along with air flow, the welding slag is prevented from being sucked into the cavity to influence normal motion of the piston by utilizing the filter screen, the conical anti-falling-back head can prevent the welding slag entering the dust collection groove from falling back onto the welding table through the dust absorption opening, the cleanness of the welding table is ensured, sparks are generated in the welding process and are splashed onto a human body to cause burn, therefore, the sparks can be shielded by the shielding mechanism, during operation, the air pump injects air into the cavity through the guide pipe, so that the piston is pushed to move downwards along the cavity under the pushing of air pressure, and the traction rope can be pulled when the piston moves downwards, thereby through haulage rope pulling baffle for the baffle passes through the hinge rotation and expandes, and after the baffle expandes, can form fan-shaped clearance between the adjacent baffle, carries out the closure through fan-shaped folded sheet to the clearance this moment, makes to shelter from the mechanism and forms circular fender cover, thereby shelters from the spark that produces when welding, has increased the security when welding.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a clamping mechanism according to the present invention;
FIG. 3 is a view of the conveyor belt of the present invention in combination with a positioning track;
FIG. 4 is a schematic structural view of a first portal frame according to the present invention;
FIG. 5 is a schematic view of a second gantry of the present invention;
FIG. 6 is a schematic view of the guard mechanism of the present invention;
FIG. 7 is a schematic view of a shielding mechanism according to the present invention;
FIG. 8 is a schematic view of the shielding mechanism of the present invention after deployment;
FIG. 9 is a flow chart of a method of the present invention.
Description of reference numerals:
1. a welding table; 2. a first slide rail; 3. a first gantry; 31. a second slide rail; 32. a second hydraulic device; 33. a suction cup; 4. a second gantry; 41. a protection mechanism; 411. a cavity; 412. a piston; 413. a welding gun; 414. a dust collecting groove; 415. filtering with a screen; 416. the head is prevented from falling back; 417. welding the opening; 418. a dust suction port; 42. an air pump; 43. a conduit; 44. a shielding mechanism; 441. a baffle plate; 442. a hinge; 443. a hauling rope; 444. folding the board; 5. a groove; 6. a conveyor belt; 61. positioning the track; 62. a rubber pad; 63. positioning a groove; 7. a first hydraulic press; 8. a clamping mechanism; 81. a clamping groove; 82. a limiting groove; 83. positioning the spring piece; 84. a fixed seat.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 9, the present invention provides a technical solution:
an automatic welding method for metal sheets, as shown in fig. 1, 2 and 4, comprises the following steps:
s1, for the coiled sheet material, firstly, uncoiling and uncoiling the coiled metal sheet through an uncoiling device;
s2, guiding the metal sheet unfolded in the step S1 into a hemming forming device, and hemming the side face, needing to be welded, of the metal sheet and the opposite side face of the metal sheet upwards symmetrically to the same height through hemming forming;
s3, tiling at least two metal sheets hemmed in the step S2 side by side, aligning adjacent hems of the metal sheets, positioning and clamping the metal sheets through a clamping mechanism 8 of an automatic welding device, and melting and welding the hems to be welded into a whole;
s4, cleaning the welding seams of the metal sheet welded in the step S3 and polishing the welding seams to be flush with the metal sheet;
the automatic welding device comprises a welding table 1, wherein a first sliding rail 2, a first portal frame 3, a second portal frame 4, a groove 5, a conveying belt 6, a first hydraulic press 7 and a clamping mechanism 8 are sequentially arranged on the welding table 1;
the first sliding rails 2 are arranged on the outer surfaces of the front end and the rear end of the welding table 1, the first portal frame 3 is movably arranged on one side between the two first sliding rails 2, the second portal frame 4 is movably arranged on the other side between the two first sliding rails 2, the groove 5 is formed in the middle of the outer surface of the upper end of the welding table 1, the conveyor belt 6 is movably arranged inside the groove 5, the first hydraulic press 7 is movably arranged in the middle of the front end and the rear end of the outer surface of the upper end of the welding table 1, and the clamping mechanism 8 is movably arranged at one end, close to the groove 5, of the first hydraulic press 7;
the first portal frame 3 comprises a second slide rail 31, a second hydraulic device 32 and a suction cup 33, the second slide rail 31 is arranged on two sides of the outer surface of the lower end of the first portal frame 3, the second hydraulic device 32 is movably arranged on the second slide rail 31, and the suction cup 33 is movably arranged at the lower end of the second hydraulic device 32;
the clamping mechanism 8 comprises a clamping groove 81, a limiting groove 82, a positioning spring piece 83 and a fixed seat 84, the clamping groove 81 is arranged in the middle position of the outer surface of one end, close to the groove 5, of the clamping mechanism 8, the limiting groove 82 is arranged on the inner surface of the clamping groove 81, the positioning spring piece 83 is movably arranged at one end, far away from the groove 5, of each of two sides of the outer surface of the upper end of the clamping mechanism 8, the fixed seat 84 is movably arranged at the upper end of the positioning spring piece 83, the fixed seat 84 penetrates through the positioning spring piece 83 and is movably connected with the clamping mechanism 8, one end, close to the groove 5, of the clamping groove 81 is splayed, the positioning spring piece 83 is V-shaped, and the;
during operation, the first portal frame 3 moves to the middle position of the welding table 1 along the first slide rail 2, then the metal sheet is transported to the middle position of the welding table 1 through the conveyor belt 6, at the moment, the metal sheet is positioned under the first portal frame 3, then one of the second hydraulic devices 32 moves to the position right above the metal sheet along the second slide rail 31, the second hydraulic device 32 pushes the suction cup 33 to move downwards, so that the suction cup 33 sucks the metal sheet, then the second hydraulic device 32 drives the metal sheet to move upwards, so that the metal sheet and the limiting groove 82 on the clamping mechanism 8 are positioned on the same horizontal plane, then the second hydraulic device 32 drives the metal sheet to move forwards along the second slide rail 31, so that the metal sheet is clamped into the limiting groove 82 on the front-end clamping mechanism 8, then the second hydraulic device 32 continues to move forwards along the second slide rail 31, and as the metal sheet is positioned in the limiting groove 82, the sucking disc 33 is driven by the second hydraulic device 32 to generate a dislocation force with the metal sheet, so that the sucking disc 33 is separated from the metal sheet, at the moment, the positioning spring pieces 83 on the clamping mechanism 8 press the metal sheet from two sides of the upper end of the metal sheet, so that the metal sheet is kept flat, the welding quality is prevented from being influenced by the bending of the metal sheet in the welding process, meanwhile, because the contact surfaces of the positioning spring pieces 83 and the metal sheet are arc surfaces, the abrasion of the positioning spring pieces 83 on the metal sheet is greatly reduced, then, the other metal sheet is conveyed to the position under the first portal frame 3 through the conveyor belt 6, the other second hydraulic device 32 moves to the position right above the metal sheet along the second slide rail 31, the step of the first hydraulic device 7 is repeated to adsorb and lift the metal sheet, then, the second slide rail 31 moves backwards, so that the metal sheet is positioned in the limiting groove 82 on the rear-end clamping mechanism 8, then the first hydraulic press 7 pushes the front and rear clamping mechanisms 8 to move towards the direction of the groove 5 until the two clamping mechanisms 8 are spliced, so that the two metal sheets are aligned, then the first portal frame 3 moves towards one side along the first slide rail 2, the second portal frame 4 moves towards one side along the first slide rail 2 to be right above the metal sheets, then the metal sheets are welded by the welding gun 413, the second portal frame 4 resets after the welding is completed, the first portal frame 3 moves to be right above the metal sheets along the first slide rail 2 again, the two second hydraulic presses 32 move to be right above the two metal sheets along the second slide rail 31 respectively, the suction cups 33 are pushed to move downwards, the two metal sheets are respectively sucked by the two suction cups 33 to be fixed, finally the first hydraulic press 7 drives the two clamping mechanisms 8 to reset, and as the metal sheets are fixed by the suction cups 33, the metal sheets are separated from the limiting grooves 82 when the clamping mechanisms 8 move, the two second hydraulic devices 32 move along the slide rails in opposite directions, so that the suction cup 33 and the metal sheet generate a dislocated force under the driving of the second hydraulic devices 32, the suction cup 33 and the metal sheet are separated, the two welded metal sheets fall onto the conveyor belt 6 due to gravity under the condition that the two welded metal sheets are separated from the suction cup 33, and then the two welded metal sheets are conveyed to the separation welding table 1 by the conveyor belt 6, and the welding work of the metal sheets is completed.
As an embodiment of the present invention, as shown in fig. 2 and 3, the conveyor belt 6 is provided with a positioning rail 61 on the outer surface of the upper end, a rubber pad 62 is glued to the outer surface of the upper end of the positioning rail 61, two sides of the outer surface of one end of the clamping mechanism 8 close to the groove 5 are both provided with positioning grooves 63, the positioning rail 61 penetrates through the positioning grooves 63, the positioning rails 61 and the positioning grooves 63 are T-shaped, the distance between the three positioning rails 61 is the same as the length of the metal sheet and the clamping groove 81, when the first hydraulic press 7 pushes the clamping mechanism 8 to move towards the groove 5, the clamping mechanism 8 is separated from the welding table 1, which easily causes the two clamping mechanisms 8 to shift during the moving process, so that the spliced metal sheet is dislocated to affect the welding quality, at this time, the clamping mechanism 8 can be positioned by the positioning mechanism formed by the positioning rail 61 and the positioning grooves 63, prevent that fixture 8 from taking place the skew at the removal in-process, when fixture 8 removes to recess 5 direction, positioning track 61 on the conveyer belt 6 can block in the constant head tank 63 on the fixture 8, through the mutually supporting of positioning track 61 and constant head tank 63, make fixture 8 remain stable at the horizontal plane, simultaneously because positioning track 61 and constant head tank 63 bit T font, make behind positioning track 61 and the constant head tank 63 block, the vertical direction to fixture 8 has also carried out the removal restriction, make two fixture 8 finally neatly rely on together, the regularity of sheet metal concatenation has been ensured.
As an embodiment of the present invention, as shown in fig. 5 and 6, the second portal frame 4 includes a protection mechanism 41, an air pump 42 and a conduit 43, the protection mechanism 41 is fixedly installed at a middle position of an outer surface of a lower end of the second portal frame 4, the air pump 42 is fixedly installed at a rear end position of the outer surface of the lower end of the second portal frame 4, the conduit 43 is movably installed between the air pump 42 and the protection mechanism 41, the protection mechanism 41 includes a cavity 411, a piston 412, a welding gun 413, a welding port 417, a shielding mechanism 44 and a dust suction mechanism, the cavity 411 is opened at an upper end inside the protection mechanism 41, the piston 412 is movably installed inside the cavity 411, the welding gun 413 is movably installed at a lower end of the piston 412, the welding port 417 is opened at a middle position of an outer surface of the lower end of the protection mechanism 41, the shielding mechanism 44 is movably installed at a lower end, the dust suction mechanism is arranged at the lower end of the interior of the protection mechanism 41, and as the welding gun 413 is exposed to the outside and is easily damaged, the welding gun 413 can be protected by the protection mechanism 41, when welding is required, the air pump 42 injects air into the cavity 411 inside the shielding mechanism 41 through the conduit 43, the piston 412 inside the chamber 411 is pushed downward by the push of the air pressure, and the welding torch 413 at the lower end of the piston 412 moves downward following the piston 412, and extends outside the guard mechanism 41, through the weld 417, until it contacts the sheet metal, thereby, welding is started, and after welding is finished, air pump 42 pumps air inside chamber 411 through conduit 43, so that piston 412 moves upward along chamber 411, and the welding gun 413 moves upwards along with the piston 412 and finally contracts into the protection mechanism 41, the welding gun 413 is protected by the protection mechanism 41, the welding gun 413 is prevented from being damaged, and the service life of the welding gun 413 is prolonged.
As an embodiment of the present invention, as shown in fig. 6 to 7, the dust suction mechanism includes a dust collecting tank 414, a filter screen 415, a fall-back prevention head 416, and a dust suction port 418, the dust collecting tank 414 is opened around the inner lower end of the protection mechanism 41, the filter screen 415 is movably mounted at the inner upper end of the dust collecting tank 414, the fall-back prevention head 416 is movably mounted at the inner lower end of the dust collecting tank 414, the dust suction port 418 is opened around the outer surface of the lower end of the protection mechanism 41, the dust collecting tank 414 is communicated with the cavity 411, the fall-back prevention head 416 is conical, the diameter of the upper end of the fall-back prevention head 416 is smaller than the diameter of the lower end thereof, since welding slag is generated during welding, the welding slag is not timely cleaned, which may contaminate the welding table 1, and may even affect the welding quality after welding, the welding slag may be cleaned by the dust suction mechanism, after welding is finished, the air pump 42 evacuates the air inside the cavity 411 through the, the piston 412 moves upwards along the containing cavity 411, at the moment, the piston 412 generates suction force to suck outside air into the dust collecting groove 414 through the dust suction port 418, welding slag is sucked into the dust collecting groove 414 along with air flow, the welding slag is prevented from being sucked into the containing cavity 411 by the filter screen 415 to influence the normal movement of the piston 412, the conical anti-falling head 416 can prevent the welding slag entering the dust collecting groove 414 from falling back onto the welding table 1 through the dust suction port 418, and the cleanness of the welding table 1 is guaranteed.
As an embodiment of the present invention, as shown in fig. 6 to 8, the shielding mechanism 44 includes four baffles 441, four hinges 442, a pulling rope 443 and a folding plate 444, the four baffles 441 are movably mounted at a lower end position around the outer surface of the shielding mechanism 41, the hinges 442 are movably mounted between the outer surface of the upper end of the baffles 441 and the shielding mechanism 41, the pulling rope 443 is movably mounted between the piston 412 and the lower end position of the outer surface of the side of the baffles 441 away from the shielding mechanism 41, the folding plate 444 is movably mounted between the adjacent baffles 441, the folding plate 444 is fan-shaped, since sparks are generated during welding and splashed onto a human body, the sparks can be shielded by the shielding mechanism 44, during operation, the air is burnt into the cavity 411 by the air pump 42 through the conduit 43, so that the piston 412 is driven by air pressure to move down along the cavity 411, when the piston 412 moves downwards, the pulling rope 443 is pulled, the baffle 441 is pulled through the pulling rope 443, the baffle 441 rotates through the hinge 442 to be unfolded, after the baffle 441 is unfolded, a fan-shaped gap is formed between the adjacent baffles 441, at the moment, the gap is closed through the fan-shaped folding plate 444, the shielding mechanism 44 forms a circular shield, so that sparks generated during welding are shielded, and the safety during welding is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An automatic welding method of metal sheets is characterized by comprising the following steps:
s1, for the coiled sheet material, firstly, uncoiling and uncoiling the coiled metal sheet through an uncoiling device;
s2, guiding the metal sheet unfolded in the step S1 into a hemming forming device, and hemming the side face, needing to be welded, of the metal sheet and the opposite side face of the metal sheet upwards symmetrically to the same height through hemming forming;
s3, tiling at least two metal sheets hemmed in the step S2 side by side, aligning adjacent hems of the metal sheets, positioning and clamping the metal sheets through a clamping mechanism (8) of an automatic welding device, and melting and welding the hems to be welded into a whole;
s4, cleaning the welding seams of the metal sheet welded in the step S3 and polishing the welding seams to be flush with the metal sheet;
wherein the automatic welding device comprises a welding station (1); the welding table (1) is sequentially provided with a first sliding rail (2), a first portal frame (3), a second portal frame (4), a groove (5), a conveying belt (6), a first hydraulic press (7) and a clamping mechanism (8); the first sliding rails (2) are arranged on the outer surfaces of the front end and the rear end of the welding table (1), the first portal frame (3) is movably arranged on one side between the two first sliding rails (2), the second portal frame (4) is movably arranged on the other side between the two first sliding rails (2), the groove (5) is formed in the middle position of the outer surface of the upper end of the welding table (1), the conveying belt (6) is movably arranged in the groove (5), the first hydraulic press (7) is movably arranged in the middle position of the front end and the rear end of the outer surface of the upper end of the welding table (1), and the clamping mechanism (8) is movably arranged at one end, close to the groove (5), of the first hydraulic press (7);
the first portal frame (3) comprises a second sliding rail (31), a second hydraulic device (32) and a sucking disc (33), the second sliding rail (31) is arranged on two sides of the outer surface of the lower end of the first portal frame (3), the second hydraulic device (32) is movably mounted on the second sliding rail (31), and the sucking disc (33) is movably mounted with the lower end of the second hydraulic device (32);
fixture (8) are including centre gripping groove (81), spacing groove (82), location spring leaf (83) and fixing base (84), fixture (8) is seted up in centre gripping groove (81) and is close to the one end surface intermediate position of recess (5), the internal surface in centre gripping groove (81) is seted up in spacing groove (82), the one end of recess (5) is kept away from to location spring leaf (83) movable mounting in the upper end surface both sides of fixture (8), fixing base (84) movable mounting is in the upper end of location spring leaf (83), and fixing base (84) run through swing joint between location spring leaf (83) and fixture (8).
2. The automatic welding method of a metal sheet as claimed in claim 1, characterized in that the end of the holding groove (81) near the groove (5) is splayed, the positioning spring piece (83) is V-shaped, and the V-shaped profile of the lower end of the positioning spring piece (83) is arc-shaped.
3. The automatic welding method of metal sheets according to claim 1, wherein the conveyor belt (6) is provided with a positioning rail (61) on the outer surface of the upper end, a rubber pad (62) is glued on the outer surface of the upper end of the positioning rail (61), positioning grooves (63) are respectively formed on two sides of the outer surface of one end of the clamping mechanism (8) close to the groove (5), the positioning rail (61) penetrates through the positioning grooves (63), the positioning rails (61) and the positioning grooves (63) are T-shaped, and the distance between the three positioning rails (61) is the same as the length of the metal sheets and the length of the clamping grooves (81).
4. The automatic welding method of the metal sheets according to claim 1, wherein the second portal frame (4) comprises a protection mechanism (41), an air pump (42) and a conduit (43), the protection mechanism (41) is fixedly installed at the middle position of the outer surface of the lower end of the second portal frame (4), the air pump (42) is fixedly installed at the rear end position of the outer surface of the lower end of the second portal frame (4), the conduit (43) is movably installed between the air pump (42) and the protection mechanism (41), the protection mechanism (41) comprises a cavity (411), a piston (412), a welding gun (413), a welding port (417), a shielding mechanism (44) and a dust suction mechanism, the cavity (411) is opened at the upper end inside the protection mechanism (41), the piston (412) is movably installed inside the cavity (411), the welding gun (413) is movably installed at the lower end of the piston (412), the welding port (417) is arranged in the middle of the outer surface of the lower end of the protection mechanism (41), the shielding mechanism (44) is movably arranged at the lower end of the outer surface of the protection mechanism (41), and the dust collection mechanism is arranged at the lower end of the inner part of the protection mechanism (41).
5. The automatic welding method of the metal sheets as claimed in claim 4, wherein the dust collection mechanism comprises a dust collection groove (414), a filter screen (415), an anti-falling head (416) and a dust collection port (418), the dust collection groove (414) is arranged around the inner lower end of the protection mechanism (41), the filter screen (415) is movably arranged at the inner upper end of the dust collection groove (414), the anti-falling head (416) is movably arranged at the inner lower end of the dust collection groove (414), the dust collection port (418) is arranged around the outer surface of the lower end of the protection mechanism (41), the dust collection groove (414) is communicated with the accommodating cavity (411), the anti-falling head (416) is conical, and the diameter of the upper end of the anti-falling head (416) is smaller than that of the lower end thereof.
6. The automatic welding method of metal sheets according to claim 4, wherein said shielding mechanism (44) comprises four baffles (441), four hinges (442), a pulling rope (443), and a folding plate (444), said four baffles (441) are movably mounted at a lower position around the outer surface of the shielding mechanism (41), said hinges (442) are movably mounted between the outer surface of the upper end of the baffles (441) and the shielding mechanism (41), said pulling rope (443) is movably mounted between the lower position of the outer surface of the side of the baffles (441) away from the shielding mechanism (41) and the piston (412), said folding plate (444) is movably mounted between the adjacent baffles (441), and said folding plate (444) is fan-shaped.
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