CN115091214B - PD wheel automatic welding system - Google Patents
PD wheel automatic welding system Download PDFInfo
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- CN115091214B CN115091214B CN202210724794.0A CN202210724794A CN115091214B CN 115091214 B CN115091214 B CN 115091214B CN 202210724794 A CN202210724794 A CN 202210724794A CN 115091214 B CN115091214 B CN 115091214B
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- 238000003466 welding Methods 0.000 title claims abstract description 158
- 238000005520 cutting process Methods 0.000 claims abstract description 58
- 230000007246 mechanism Effects 0.000 claims description 50
- 239000003517 fume Substances 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000000779 smoke Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000002085 irritant Substances 0.000 description 2
- 231100000021 irritant Toxicity 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
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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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
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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
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides an automatic welding system for PD wheels, which comprises: the automatic welding device comprises a cutting station, a pairing assembly station, an automatic welding workstation and a control device, wherein the control device is electrically connected with the cutting station, the pairing assembly station and the automatic welding workstation; wherein the cutting station is adapted to cut blanks into a splice-able wheel casing sheet; the pairing assembly station is suitable for assembling and fixing a plurality of wheel casing pieces on a follow-up tool to form a cylindrical PD casing; the automated splice welding station is adapted to automatically weld a plurality of bumps onto the PD housing. According to the invention, the welding manufacture of the PD wheel is more automatic, and the workload and the danger of workers are effectively reduced.
Description
Technical Field
The invention relates to the technical field of PD wheel production equipment, in particular to an automatic welding system for PD wheels.
Background
The road roller is a heavy machine widely used for filling and compacting operations of large-scale construction tools Cheng Xiang such as high-grade highways, railways, airport runways, dams, stadiums and the like. The PD wheel is a common pinch roller, generally consists of 3 detachable lug wheel shells and a vibrating chamber cylinder, and is an acting part of the road roller. At present, the PD wheel of the existing road roller has the following characteristics: the shape of the convex block on the PD wheel is mainly a curved surface and an inclined surface; 2. the size and the weight are large; 3. the proportion of welding operation is high and the repeatability is high; these problems result in PD wheels that are essentially in manual/semi-automatic production, requiring multiple manual adjustments of workpiece position, manual welding operations, and low production efficiency throughout the process. Meanwhile, the welded PD shell is high in temperature and large in size, and potential labor safety hazards and the like are caused by manual transportation.
Disclosure of Invention
The invention discloses an automatic welding system for a PD wheel, which is simple in structure and convenient to operate and aims to solve the problems.
The invention adopts the following scheme: a PD wheel automated welding system, comprising: the automatic welding device comprises a cutting station, a pairing assembly station, an automatic welding workstation and a control device, wherein the control device is electrically connected with the cutting station, the pairing assembly station and the automatic welding workstation; wherein the cutting station is adapted to cut blanks into a splice-able wheel casing sheet; the pairing assembly station is suitable for assembling and fixing a plurality of wheel casing pieces on a follow-up tool to form a cylindrical PD casing; the automatic splice welding workstation is used for automatically welding a plurality of bumps on the PD shell and comprises a carrying robot and a welding robot, wherein the welding robot is used for welding the bumps; the transfer robot comprises a switchable quick-change welding gun and a quick-change clamp, and is configured to clamp the lug to a designated position when the quick-change clamp is connected, and to weld the lug when the quick-change welding gun is connected; the control device is configured to control the automatic welding workstation to realize the following steps: the transfer robot is controlled to take out the lug to the appointed position on the surface of the PD shell, the welding robot is controlled to move to the appointed position, and spot welding is carried out on the lug to finish primary fixing; and then controlling the transfer robot to switch the quick-change clamp into a quick-change welding gun, and controlling the transfer robot with the quick-change welding gun to move back to the preliminarily fixed lug and weld the lug together with the welding robot.
Further, the cutting station comprises a cutting gun and a positioning die, wherein the positioning die is suitable for placing semicircular blanks, and the cutting gun is arranged on the outer side of the positioning die and is used for cutting the blanks into the spliced wheel casing pieces along a profiling track on the positioning die.
Further, the assembly station comprises a first double-seat positioner and a V-shaped clamp, wherein the V-shaped clamp is arranged on a rotating disc of the first double-seat positioner and is suitable for rotatably placing a follower fixture, and the wheel casing sheet can be fixedly installed on the whole follower fixture.
Further, two side edges of the follower fixture are provided with a plurality of side edge positioning structures and side edge pressing mechanisms, and the side edge positioning structures and the side edge pressing mechanisms are used for limiting and fixing the wheel casing pieces.
Further, the automatic welding workstation further comprises a second double-seat positioner, a feeding mechanism and a first travelling mechanism, wherein the second double-seat positioner is suitable for bearing the PD shell, the carrying robot and the welding robot are arranged on the first travelling mechanism and can move on the first travelling mechanism, the carrying robot is used for carrying the lug placed on the feeding mechanism to a designated position outside the PD shell, and the welding robot is used for welding the lug to the PD shell.
Further, a placing rack is further arranged on the first travelling mechanism and used for placing the quick-change welding gun and the quick-change clamp.
Further, a second travelling mechanism is arranged at the bottom of the second double-seat positioner.
Further, the first travelling mechanism is further provided with a bump positioning assembly, the bump positioning assembly comprises a receiving disc, and four studs with fish-eye joints are hinged to the bottom of the receiving disc.
Further, the welding workstation is also provided with a smoke treatment system, the smoke treatment system comprises a rotary smoke cover and a smoke host, the rotary smoke cover is rotatably covered above the welding area of the PD shell, and the smoke host is communicated with the rotary smoke cover.
Further, lifting appliances are arranged between the cutting station and the pairing assembly station and between the pairing assembly station and the automatic welding station.
By adopting the technical scheme, the invention can obtain the following technical effects: according to the invention, the PD shell is assembled by pairing from the cutting of the wheel shell piece, and then the mechanism for welding the lug is optimally arranged, so that automation and intellectualization of the PD wheel in the process of lug welding are realized, and the production efficiency and the production safety are effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an automated welding system for PD wheels according to an embodiment of the invention;
FIG. 2 is a schematic view of a welding work portion area of a PD wheel automated welding system according to an embodiment of the invention;
FIG. 3 is a schematic view of a cutting station configuration of an automated PD wheel welding system according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a team-pairing station configuration of a PD wheel automated welding system according to an embodiment of the invention;
fig. 5 is a schematic view of a PD casing structure of an automatic welding system for a PD wheel according to an embodiment of the present invention;
FIG. 6 is a schematic view of a V-shaped clamp structure of an automatic PD wheel welding system according to an embodiment of the invention;
FIG. 7 is a schematic diagram of an automated welding workstation of a PD wheel automated welding system in accordance with an embodiment of the invention;
Fig. 8 is a schematic structural diagram of a handling robot of the PD wheel automated welding system according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a gun changing mechanism of an automatic PD wheel welding system according to an embodiment of the invention;
FIG. 10 is a schematic diagram of a cam positioning assembly of an automated PD wheel welding system according to an embodiment of the invention;
Fig. 11 is a schematic structural diagram of a feeding mechanism of an automatic PD wheel welding system according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a welding flow of an automated welding method for PD wheels according to an embodiment of the invention;
Icon: the cutting station 10, the positioning die 11, the placing table 111, the profiling 112, the pairing assembly station 20, the first double-seat positioner 21, the air cylinder 211, the sensor 212, the V-shaped clamp 22, the connecting lug limiting block 23, the side positioning structure 24, the side pressing mechanism 25, the C-shaped block 251, the pressing plate 252, the bolt 253, the second traveling mechanism 26, the automatic splice welding workstation 30, the transfer robot 31, the quick-assembly structure 311, the welding machine robot 32, the second double-seat positioner 33, the first traveling mechanism 34, the welding rod placing cylinder 35, the quick-change welding gun 361, the quick-change clamp 362, the placing rack 363, the feeding mechanism 40, the feeding rack 41, the lug placing plate 42, the lug positioning assembly 50, the stud 51, the receiving tray 52, the fume hood 61, the fume host 62, the lifting device 70, the accessory placing area 80, the wheel housing piece 91, the PD housing 92, the follower fixture 93 and the lug 94.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Examples
With reference to fig. 1, this embodiment provides an automated welding system for a PD wheel, including: the automatic assembly welding device comprises a cutting station 10, a pairing assembly station 20, an automatic assembly welding workstation 30 and a control device, wherein the control device is electrically connected with the cutting station 10, the pairing assembly station 20 and the automatic assembly welding workstation 30; wherein the cutting station 10 is adapted to cut blanks into a splice-able wheel housing piece 91; the pairing assembly station 20 is adapted to assemble and fix a plurality of wheel housing pieces 91 on a follower fixture 93 to form a cylindrical PD housing 92; the automatic splice welding station 30 is used for automatically welding a plurality of bumps 94 on the PD shell, and includes a handling robot 31 and a welding robot 32, and the welding robot 32 is used for welding the bumps 94; the transfer robot 31 includes a switchable quick-change welding gun 361 and a quick-change jig 362, and is configured to clamp the bump 94 to a designated position when the quick-change jig 361 is connected, and to weld the bump 94 when the quick-change welding gun 362 is replaced after clamping is completed;
the control means is configured to control the automated welding station 30 to perform the steps of: the transfer robot 31 is controlled to take out the lug 94 to a designated position on the surface of the PD shell 92, the welding robot 32 is controlled to move to the designated position, and spot welding is carried out on the lug 94 to finish primary fixing; then, the transfer robot 31 is controlled to switch the quick-change jig 362 to the quick-change gun 361, and the transfer robot 31 with the quick-change gun 361 is controlled to move back to the preliminarily fixed bump 94, and the bump 94 is welded together with the welding robot 32.
In the invention, the control device can use a PLC control system, and the PLC control system is used for carrying out coordination control on the electric components in the cutting station 10, the assembly station 20 and the automatic tailor-welding workstation 30 so as to realize coordination and coordination among each procedure. The PLC control system is arranged in the electrical control box, and is preferably also connected to a control computer, so that the user can conveniently program the control or set parameters.
Referring to fig. 1 to 11, in this embodiment, the cutting station 10, the pairing assembly station 20, and the automatic tailor-welding workstation 30 drive materials to circulate between each station through the lifting device 70, and the cutting station 10 may be arranged side by side with the pairing assembly station 20, so as to facilitate material transfer and reduce the travel. The blank of the invention adopts a common semicircular coiled material.
As shown in connection with fig. 3, the cutting station 10 comprises a cutting gun (not shown) for cutting the blank into curved wheel housing pieces 91, and a positioning die 11, the positioning die 11 being adapted to receive a semicircular blank. Here, the positioning die 11 comprises a profiling placing table 111 and a detachable profiling 112, the profiling 112 is provided with profiling tracks, and when a cutting gun cuts, the profiling tracks of the profiling 112 can be followed to cut blanks into required shapes, wherein the profiling 112 is provided with two profiling 112, and the two profiling 112 are symmetrically arranged. Of course, a plurality of sets of positioning holes are also provided on the cutting station 10. Here, PD shell cutting satisfying different lengths and different inner diameters can be realized by switching the profiling placing table 111, and switching can be performed in different products by a modular design of the profiling placing table 111. The curve on the PD shell is positioned through the profiling mold 112, after the blank is positioned, a positioning column is positioned on the cutting station 10, the profiling mold 112 is fixed on the profiling placing table 111 through a positioning hole, the blank is placed on the profiling placing table 111, and after the profiling placing table 111 is fixed, the cutting gun performs symmetrical cutting of a product along the profiling track of the profiling mold 112. Meanwhile, the tool platform is designed to be universal, and the parameters of the placing table 111 and the profiling 112 are adjusted to be compatible with cutting of various workpieces with different diameters, so that one-time cutting of products is completed. In the present invention, the cutting gun may be an automated device provided at the cutting station 10, which is known in the art and will not be described herein. Of course, a movable cutting gun may be used, with the cutting being carried by a worker.
As shown in fig. 4 to 6, the pairing assembly station includes a first double-seat positioner 21 and a V-shaped clamp 22, wherein the V-shaped clamp 22 is disposed on a rotating disc of the first double-seat positioner 21, and an intermediate shaft of the PD case 92 is rotatably mounted on the V-shaped clamp 22. The assembly station is used for pairing and assembling the wheel casing pieces 91 cut by the cutting station 10, the first double-seat positioner 21 is used for placing a follower fixture 93, the follower fixture 93 comprises a cylindrical frame and an intermediate shaft arranged in the frame, the wheel casing pieces 91 are attached to the outer surface of the cylindrical frame so as to wrap the whole cylindrical frame, and meanwhile, a side edge positioning structure 24 and a plurality of side edge pressing mechanisms 25 are arranged on the side edges of the cylindrical frame and used for fixing the wheel casing pieces 91 on the cylindrical frame to form preliminary positioning. The side hold-down mechanism 25 here includes a C-shaped block 251 for housing the wheel housing piece 91 and the cylindrical frame, a pressing piece 252, and a bolt 253, the pressing piece 252 being connected to the bolt 253 for pressing the wheel housing piece 91 and the cylindrical frame so that the wheel housing piece 91 is fixed to the cylindrical frame. The side edge positioning structure 24 is provided as a positioning plate protruding from the cylindrical frame for limiting the axial direction of the wheel housing piece 91. Preferably, a coupling bump stopper 23 may be disposed at the connection position of the two adjacent wheel casing pieces 91 for fixing in the circumferential direction, that is, a plurality of coupling bump stoppers 23 with holes of bolts 253 are disposed at the connection position of the two adjacent wheel casing pieces 91, and may be fixed by welding, and when the wheel casing pieces 91 are placed, the two coupling bump stoppers 23 that are matched with each other by the bolts 253 are locked by the bolts 253, and a plurality of coupling bump stoppers 23 may be disposed to complete the axial positioning of the wheel casing pieces 91; in particular, a spacer is also placed between the two coupling bump stoppers 23 that match each other for matching the circumferential errors. By the positioning in the axial direction and the circumferential direction, the wheel housing piece 91 and the follower fixture 93 form a PD housing 92. Meanwhile, in this embodiment, the first double-seat positioner 21 is an existing double-seat positioner, and the V-shaped fixture 22 is disposed on the turntable of the double-seat positioner, so as to place the follower fixture 93, and the follower fixture 93 or the PD shell 92 is conveniently taken out and put in by using the V-shaped fixture 22. Here, a quick-release structure is disposed above the V-shaped clamp 22, so that the V-shaped clamp 22 can be opened to put in and take out the follower 93.
As shown in fig. 1, 2 and 7 to 10, the automatic splice welding station 30 includes a transfer robot 31, a welder robot 32, a second double-seat positioner 33, a loading mechanism 40 and a first traveling mechanism 34, wherein the second double-seat positioner 33 is adapted to receive a PD shell 92, the transfer robot 31 and the welding robot are disposed on the first traveling mechanism 34, both are adapted to move on the first traveling mechanism 34, the transfer robot 31 is adapted to transfer a bump 94 placed on the loading mechanism 40 to a designated position on an outer surface of the PD shell 92, and the welding robot is adapted to weld the bump 94 to the PD shell 92. The second dual-seat positioner 33 is used for placing the assembled PD shells 92, and functions the same as the first dual-seat positioner 21, and preferably, a second traveling mechanism 26 is disposed at the bottom of one of the dual-seat positioners, so as to adjust the distance between the dual-seat positioners, so that the PD shells 92 with different specifications and sizes can be used. The transfer robot 31 is a multi-axis manipulator, which is electrically connected to the control system, has a multi-degree-of-freedom moving function, and is disposed on the first travelling mechanism 34 to facilitate movement along the travelling mechanism in the X-axis direction. Here, the first running mechanism 34 and the second running mechanism 26 may each be a conventional belt-driven running mechanism capable of driving the component disposed above to perform movement in the X-axis direction. The welding robot comprises a multi-axis manipulator, the tail end of which is provided with a welding gun, and the welding robot is electrically connected to the control system and is arranged on the first travelling mechanism 34 with the transfer robot 31. The handling robot is used for clamping the lug 94 placed on the feeding mechanism 40 to the surface of the PD shell 92, and placing the lug 94 on a designated position through the control system, when the lug 94 reaches the designated position, the control device drives the welding robot to move to the position of the lug 94, and the lug 94 is welded by using the welding gun.
As shown in fig. 11, the feeding mechanism 40 includes a feeding frame 41 and a bump placing plate 42, and the bump placing plate 42 is connected with a double cylinder 211 for driving the bump placing plate 42 to move on the feeding mechanism 40 so as to move the bump 94 placed on the bump placing plate 42 to a feeding position.
Referring to fig. 7 to fig. 9, in another preferred embodiment, a quick-change structure is disposed at the end of the multi-axis manipulator of the transfer robot 31, a quick-change welding gun 361, a quick-change clamp 362 and a rack 363 thereof are disposed beside the transfer robot 31, the quick-change welding gun 361 and the quick-change clamp 362 are disposed on the rack 363, the quick-change welding gun 361 and the quick-change clamp 362 are suitable for being quickly matched with the quick-change structure, and the multi-axis manipulator can automatically move to the position between the quick-change welding gun 361 and the quick-change clamp 362 for switching installation. Here, the quick-change structure may use a conventional robot tool quick-change device, that is, a male disk is provided on the transfer robot 31, and a female disk matched with the male disk is provided on the quick-change welding gun 361 and the quick-welding jig 362, so that the replacement efficiency is improved. Here, the quick-change clamp 362 uses an electromagnetic clamp, that is, generates magnetism by energizing to suck the bump 94, so as to achieve the grabbing effect. When the carrying robot 31 carries the lug 94, the multi-axis manipulator is switched and installed as a quick-mounting fixture for clamping the lug 94; when the transfer robot 31 transfers the bump 94 to the PD case 92, the welding robot is driven to perform electric welding and preliminary fixing, and then the transfer robot 31 is driven to move to the rack 363 to detach the quick-change fixture 362 and mount the quick-change welding gun 361, and then the transfer robot moves to the preliminarily fixed bump 94 to perform welding together with the welding robot, so that the welding efficiency is improved. Preferably, a welding rod placing cylinder 35 is arranged at the side edges of the welding robot and the carrying robot 31, so that the welding robot and the carrying robot 31 provided with the quick-change welding gun 361 can take welding rods automatically. The quick-assembly structure 311, the quick-change welding gun 361 and the quick-change clamp 362 belong to the existing structure, and the specific structure thereof is not described.
In another preferred embodiment, as shown in fig. 10, a bump positioning assembly 50 is further disposed on the first travelling mechanism 34, and is disposed between the handling robot 31 and the feeding mechanism 40, for coarsely positioning the bump 94. The bump positioning assembly 50 includes a receiving tray 52, two adjacent sides of the receiving tray 52 are provided with barrier strips, and four studs 51 with fish-eye joints are hinged to the bottom of the receiving tray 52 for adjusting the inclination angle of the receiving tray 52. The bump 94 is clamped and placed into the receiving tray 52 of the bump positioning assembly 50 by the handling robot 31, and under the action of gravity, the bump 94 slides to the stop bar of the receiving tray 52 due to the inclined state of the receiving tray 52, is limited by the stop bar, completes gravity centering, and then is grabbed to the designated position of the PD shell 92 by the handling robot 31 for accurate positioning on the X/Y/Z axis. Of course, the precise positioning in the X/Y/Z axis here relies on the control means for position calculation. In this embodiment, a wear-resistant stainless steel plate is attached to the receiving plate at the location where the receiving plate contacts the bump 94 to reduce friction against the bump 94. A further photoelectric sensor is provided on the bump positioning assembly 50, where the photoelectric sensor is used to detect whether the handling robot 31 is moved into place.
In another preferred embodiment, the automatic welding station 30 is further provided with a fume treatment system, the fume treatment system comprises a rotary fume hood 61 and a fume host 62, the rotary fume hood 61 is rotatably sleeved above the welding area of the PD shell 92 through a rotary frame, and the fume host 62 is communicated with the rotary fume hood 61. The rotating frame of the rotating smoke cover 61 may be disposed on a position changer, connected to the smoke main machine 62, and absorbs smoke through the smoke main machine 62. The smoke treatment system is mainly arranged for a large amount of irritant gas generated in the welding process, and the irritant gas or other harmful gas generated in welding can be effectively discharged into the smoke processor by arranging the smoke treatment system, so that smoke is prevented from being diffused in the automatic welding workstation 30, and threat is caused to workers.
In the present invention, the control flow of the welding robot and the transfer robot 31 is as follows: firstly, a control device can be used for manually selecting workpieces of which types, and different parameters are called through the type selection of the workpieces: first, the transfer robot 31 transfers, the welding robot performs spot welding, and then the transfer robot 31 performs spot welding together with the welding robot.
In the preferred embodiment of the present invention, the rotary tables of the first and second double-seat displacers 21 and 33 are provided with a cylinder 211 and a sensor 212, the cylinder 211 has no power output, and is connected to the rotary table through a connecting block for clamping the rotary table, and the clamping point position of the cylinder 211 is adjustable; the sensor 212 is used to detect whether the turntable is at a zero position, where the sensor 212 may use a hall element or a photoelectric sensor 212, etc., and the zero detection is the prior art and will not be described herein. With this arrangement, the height position of the positioner carousel can be more precisely controlled.
In the invention, a lifting device 70 is arranged between the cutting station 10 and the pairing assembly station 20 and between the pairing assembly station 20 and the automatic tailor-welding workstation 30, wherein the lifting device 70 is used for lifting materials such as blanks, wheel shell pieces 91, PD shells 92 and the like, and can be lifted up and down and moved in four directions, so that workpieces can be lifted between the stations. An accessory placement area 80 is also provided on the automated splice welding workstation 30 for placement of equipment accessories for ease of replacement by a user.
Referring to fig. 12, the working steps of the present invention are as follows:
s1, hoisting a blank to a cutting station 10, moving a cutting gun along with the profiling track of a positioning die 11 after positioning to finish cutting, cutting at least two wheel casing pieces 91 which can be combined into a whole, and then running to a pairing assembly station 20;
s2, on the assembly station 20, fixing the wheel housing piece 91 to a follower 93, and fixing the wheel housing piece 91 to the follower 93 through a connecting lug 94 and a side pressing mechanism 25, so that the wheel housing piece 91 and the follower 93 are paired to form a cylindrical PD housing 92; hoisting the PD shell 92 to the automatic tailor-welding workstation 30;
s3: in the automatic splice welding workstation 30, the carrying robot 31 firstly takes out the protruding blocks 94 from the feeding mechanism 40 to the appointed position on the surface of the PD shell 92, and the welding robot moves to the appointed position to perform spot welding on the protruding blocks 94 to finish primary fixation; and then the carrying robot moves to a position of a placing rack 363 to switch the quick-change clamp 362 into a quick-change welding gun 361, and then moves back to a position of a preliminarily fixed lug 94 on the surface of the PD shell 92, and the welding robot welds the lug 94 together.
S4: after the completion of the welding, the transfer robot 31 moves to the placement rack 363 again, and the quick-change welding gun 361 is switched to the quick-change jig 362, and the step S3 is repeated until the welding of all the bumps 94 is completed.
By adopting the technical scheme, the invention can obtain the following technical effects: according to the invention, through the optimized arrangement of the mechanism from the cutting of the wheel shell piece 91 to the pairing assembly of the PD shell 92 and the final welding of the convex blocks 94, the automatic production of the PD wheel is realized, and the production efficiency and the production safety are effectively improved.
According to the invention, on one hand, the welding efficiency is greatly improved, and on the other hand, the work of manpower in the welding procedure is liberated, and the danger of manual welding is effectively reduced. Meanwhile, the quality of the product is more stable through automatic welding.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention.
Claims (6)
1. A PD wheel automated welding system, comprising: the automatic welding device comprises a cutting station, a pairing assembly station, an automatic welding workstation and a control device, wherein the control device is electrically connected with the cutting station, the pairing assembly station and the automatic welding workstation; wherein,
The cutting station is suitable for cutting the blank into the spliced wheel casing pieces;
the pairing assembly station is suitable for assembling and fixing a plurality of wheel casing pieces on a follow-up tool to form a cylindrical PD casing;
The automatic splice welding workstation is used for automatically welding a plurality of bumps on the PD shell and comprises a carrying robot, a welding robot and a first travelling mechanism, wherein the welding robot is used for welding the bumps; the transfer robot comprises a switchable quick-change welding gun and a quick-change clamp, and is configured to clamp the lug to a designated position when the quick-change clamp is connected, and to weld the lug when the quick-change welding gun is connected;
The cutting station comprises a cutting gun and a positioning die, wherein the positioning die is suitable for placing semicircular blanks, and the cutting gun is arranged at the outer side of the positioning die and is used for cutting the blanks into spliced wheel casing pieces along a profiling track on the positioning die; the positioning die comprises a profiling placing table and a detachable profiling die, the profiling die is provided with a profiling track, and the cutting gun can cut along the profiling track of the profiling die when cutting so as to cut blanks into required shapes; PD shells with different lengths and different inner diameters are cut by switching the profiling placing table; the profiling placing table is suitable for being in modularized design so as to be switched when different products are produced; the profiling tracks of the profiling are suitable for being matched with the curves on the PD shell to be positioned, and the profiling is fixed on the profiling placing table through the positioning holes so that the cutting gun can cut along the profiling tracks of the profiling;
A plurality of side positioning structures and side pressing mechanisms are arranged on two side edges of the follower fixture and used for limiting and fixing the wheel shell pieces; a placing rack is further arranged on the first travelling mechanism and used for placing the quick-change welding gun and the quick-change clamp; the first travelling mechanism is also provided with a bump positioning assembly, the bump positioning assembly comprises a receiving tray, and four studs with fish-eye joints are hinged to the bottom of the receiving tray;
When the automatic cutting machine works, firstly, a blank is hoisted to a cutting station, after positioning, a cutting gun moves along with the profiling track of a positioning die to finish cutting, at least two wheel casing pieces which can be combined into a whole are cut, and then the wheel casing pieces are operated to a pairing assembly station; then, on the assembly station, the wheel casing sheet is fixed on a follower fixture, and is fixed on the follower fixture through a connecting lug and a side pressing mechanism, so that the wheel casing sheet and the follower fixture are paired to form a cylindrical PD casing; hoisting the PD shell to the automatic welding workstation; the control device is then configured to control the automated welding station to: adjusting positioning dies with different parameters according to the size of a workpiece, controlling a transfer robot to take out a lug to a specified position on the surface of the PD shell, controlling a welding robot to move to the specified position, and performing spot welding on the lug to finish primary fixation; and then controlling the transfer robot to switch the quick-change clamp into a quick-change welding gun, and controlling the transfer robot with the quick-change welding gun to move back to the preliminarily fixed lug and weld the lug together with the welding robot.
2. The PD wheel automated welding system of claim 1, wherein the pairing assembly station comprises a first double-seat positioner, a V-clamp, wherein the V-clamp is disposed on a rotating disc of the first double-seat positioner, the V-clamp adapted to rotatably place a follower fixture such that a wheel housing sheet can be fixedly mounted throughout the follower fixture.
3. The PD wheel automated welding system of claim 1, wherein the automated splice welding station further comprises a second dual-seat positioner, a loading mechanism, and a first travel mechanism, wherein the second dual-seat positioner is adapted to receive a PD housing, the transfer robot and the welding robot are disposed on the first travel mechanism, both movable on the first travel mechanism, the transfer robot to transfer a bump placed on the loading mechanism to a designated location outside of the PD housing, and the welding robot to weld the bump to the PD housing.
4. The PD wheel automated welding system of claim 3, wherein a second travel mechanism is provided at a bottom of the second double seat positioner.
5. The PD wheel automated welding system of claim 3, wherein the automated welding station is further provided with a fume treatment system comprising a rotary fume hood rotatably disposed over the welding area of the PD housing and a fume host in communication with the rotary fume hood.
6. The PD wheel automated welding system of claim 1, wherein a hanger is provided between the cutting station and the set of paired assembly stations and between the set of paired assembly stations and the automated splice welding station.
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