CN217619047U - Automatic welding system of PD wheel - Google Patents

Abstract

The utility model provides an automatic welding system of PD wheel, include: the automatic tailor-welding machine comprises a cutting station, an assembling station, an automatic tailor-welding workstation and a control device, wherein the control device is electrically connected with the cutting station, the assembling station and the automatic tailor-welding workstation; wherein the cutting station is adapted to cut the blank into spliceable wheel housing pieces; the assembly station is suitable for assembling and fixing a plurality of wheel shell pieces on a follow-up tool to form a cylindrical PD shell; the automatic tailor welding workstation is adapted to automatically weld a plurality of bumps on the PD shell. Through the utility model discloses, make the welding of PD wheel more automatic, effectively reduced workman's work load and danger.

Description

Automatic welding system of PD wheel

Technical Field

The utility model relates to a PD takes turns production facility technical field particularly, relates to a PD takes turns automatic welding system.

Background

The road roller is a heavy machine widely used for the filling and compacting operation of large-scale engineering projects such as high-grade roads, railways, airport runways, dams, stadiums and the like. The PD wheel is a common pressing wheel, generally consists of 3 detachable lug wheel shells and a cylinder of a vibration chamber, and is an acting part of the road roller. At present, the PD wheel of the existing road roller has the following characteristics: 1, the shape of the lug on the PD wheel is mainly a curved surface and an inclined surface; 2. the size and the weight are large; 3. the welding operation has high proportion and repeatability; the PD wheel is basically produced manually/semi-automatically due to the problems, the position of a workpiece needs to be adjusted manually for many times in the whole machining process, manual welding operation is carried out, and the production efficiency is low. Meanwhile, the welded PD shell has higher temperature and large volume, potential labor safety hazards in manual carrying and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an automatic welding system of PD wheel, simple structure, the operation is convenient, aims at improving above-mentioned problem.

The utility model adopts the following scheme: a PD-wheel automated welding system, comprising: the automatic tailor-welding machine comprises a cutting station, an assembling station, an automatic tailor-welding workstation and a control device, wherein the control device is electrically connected with the cutting station, the assembling station and the automatic tailor-welding workstation; wherein the cutting station is adapted to cut the blank into spliceable wheel casing pieces; the assembly station is suitable for assembling and fixing a plurality of wheel shell pieces on a follow-up tool to form a cylindrical PD shell; the automatic tailor-welding workstation is used for automatically welding a plurality of lugs on the PD shell and comprises a carrying robot, a welding robot, a quick-change welding gun and a quick-change clamp; the welding robot is used for welding the lug; the carrying robot is provided with a quick-change structure which can be matched with the quick-change welding gun and the quick-change fixture, and is configured to be capable of clamping the bump to a specified position when being connected with the quick-change fixture, and capable of welding the bump when being connected with the quick-change welding gun.

Further, the cutting station comprises a cutting gun and a positioning die, the positioning die is suitable for placing semicircular blanks, and the cutting gun is arranged on the outer side of the positioning die and used for cutting the blanks into the wheel shell pieces capable of being spliced along the profiling track on the positioning die.

Further, the group is to assembly station including first pair of machine of shifting, V type anchor clamps, wherein, V type anchor clamps set up in on the rolling disc of first pair of machine of shifting, V type anchor clamps are suitable for rotationally to place the retinue frock for the wheel shell piece can fixed mounting be whole the retinue frock.

Furthermore, a plurality of side positioning structures and side pressing mechanisms are arranged on two side edges of the accompanying tool and used for limiting and fixing the wheel shell piece.

Further, automatic tailor-welding workstation still includes second double seat machine of shifting, feed mechanism and first running gear, wherein the second double seat machine of shifting is suitable for accepting the PD shell, transfer robot with welding robot set up in on the first running gear, both can move on the first running gear, transfer robot is used for will placing lug on the feed mechanism carry to on the external assigned position of PD shell, welding robot is used for with the lug welds to on 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.

Furthermore, a bump positioning assembly is further arranged on the first traveling mechanism and comprises a receiving disc, and four studs with fisheye joints are hinged to the bottom of the receiving disc.

Further, the tailor-welding workstation is further 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.

Furthermore, lifting appliances are arranged between the cutting station and the assembling station and between the assembling station and the automatic tailor-welding workstation.

By adopting the technical scheme, the utility model discloses can gain following technological effect: the utility model discloses a from the cutting wheel shell piece to pairing and assembling into the PD shell, go to the mechanism of last welding lug again and optimize the setting, realized the automation and the intellectuality of PD wheel when the lug welding, effectively improved production efficiency and production security.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings which are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a schematic overall structure diagram of an automated PD wheel welding system according to an embodiment of the present invention;

fig. 2 is a schematic view of a welding work part region of a PD wheel automated welding system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cutting station of an automated PD wheel welding system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a team pairing station of the PD wheel automated welding system according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a PD case of an automated PD wheel welding system according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a V-shaped clamp of an automated PD wheel welding system according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an automatic tailor-welding workstation of an automated PD wheel welding system according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a transfer robot of the PD wheel automated welding system according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a gun changing mechanism of the PD wheel automated welding system according to the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a cam positioning assembly of a PD wheel automated welding system according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a feeding mechanism of an automated 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 PD wheel welding method according to an embodiment of the present invention;

icon: the welding rod welding machine comprises a cutting station 10, a positioning die 11, a placing table 111, a profiling 112, a pairing assembly station 20, a first double-seat positioner 21, a cylinder 211, a sensor 212, a V-shaped clamp 22, a connecting lug limiting block 23, a side positioning structure 24, a side pressing mechanism 25, a C-shaped block 251, a pressing sheet 252, a bolt 253, a second travelling mechanism 26, an automatic tailor-welding workstation 30, a carrying robot 31, a quick-assembly structure 311, a welding robot 32, a second double-seat positioner 33, a first travelling mechanism 34, a welding rod placing barrel 35, a quick-change welding gun 361, a quick-change clamp 362, a placing frame 363, a feeding mechanism 40, a feeding frame 41, a lug placing plate 42, a lug positioning assembly 50, a stud 51, a receiving disc 52, a smoke dust cover 61, a smoke host machine 62, a hoisting device 70, an accessory placing area 80, a wheel shell 91, a PD shell 92, a follow-up tool 93 and a lug 94.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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 or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Examples

With reference to fig. 1, the present embodiment provides a PD wheel automated welding system, including: the automatic tailor-welding machine comprises a cutting station 10, an assembling station 20, an automatic tailor-welding workstation 30 and a control device, wherein the control device is electrically connected with the cutting station 10, the assembling station 20 and the automatic tailor-welding workstation 30; wherein the cutting station 10 is adapted to cut the blank into spliceable wheel housing pieces 91; the assembling station 20 is suitable for assembling and fixing a plurality of wheel shell pieces 91 on a following tool 93 to form a cylindrical PD shell 92; the automatic tailor-welding workstation 30 is used for automatically welding a plurality of bumps 94 on the PD shell, and includes a handling robot 31, a welding robot 32, a quick-change welding gun 361, and a quick-change jig 362; the welding robot 32 is used for welding the bump 94; the transfer robot 31 is provided with a quick-change structure that can be matched with the quick-change welding gun 361 and the quick-change jig 362, and is configured to be able to clamp the projection 94 to a specified position when the quick-change jig 362 is connected, and to be able to weld the projection 94 when the quick-change welding gun 361 is replaced after clamping is completed.

The control device is configured to control the automatic tailor welding workstation 30 to carry out the following steps: controlling the carrying robot 31 to take the bump 94 out to a specified position on the surface of the PD shell 92, controlling the welding robot 32 to move to the specified position, and performing spot welding on the bump 94 to complete initial fixing; and then controlling the transfer robot 31 to switch the quick-change jig 362 to the quick-change welding gun 361, and controlling the transfer robot 31 with the quick-change welding gun 361 to move back to the primarily fixed bump 94, so as to weld the bump 94 together with the welding robot 32.

The utility model discloses in, controlling means can use PLC control system, and is right through PLC control system cutting station 10, group carry out coordinated control to the electrical component in assembly station 20, the automatic tailor-welding workstation 30 to realize the cooperation harmony between every process. The PLC control system is arranged in the electric control box and is preferably connected to a control computer, so that a user can conveniently program and control or set parameters.

Referring to fig. 1 to 11, in this embodiment, the cutting station 10, the pair assembling station 20, and the automatic tailor-welding workstation 30 are driven by the hoisting device 70 to move between the stations, and the cutting station 10 and the pair assembling station 20 can be arranged side by side, so that the material transfer is facilitated, and the stroke is reduced. The utility model provides a blank adopts the semi-circular coiled material commonly used.

As shown in fig. 3, the cutting station 10 includes a cutting gun (not shown) and a positioning die 11, the positioning die 11 is suitable for placing a semi-circular blank, and the cutting gun is used for cutting the blank into a curved wheel shell piece 91. Here, the positioning mold 11 includes a profiling placing table 111 and a detachable master 112, the master 112 is provided with a profiling track, and a cutting gun can cut along the profiling track of the master 112 when cutting, so as to cut the blank into a desired shape, wherein the two masters 112 are provided, and the two masters 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 that satisfies different length and different internal diameters can be realized through switching profile modeling placing table 111, and the placing table 111 that changes the profile modeling can be switched in the production of different products through the modular design. The curve on the PD shell is positioned through the profiling 112, after the blank is positioned, the positioning column is arranged on the cutting station 10, the profiling 112 is fixed on the profiling placing table 111 through the positioning hole, the blank is placed on the profiling placing table 111, and after the blank is fixed, the cutting gun carries out product symmetrical cutting along the profiling track of the profiling 112. Meanwhile, the design of the tool platform needs to have universality, the cutting of workpieces with different diameters is compatible by adjusting the parameters of the placing table 111 and the profiling mold 112, and the completion of one-time cutting of products is realized. The utility model discloses in, the cutting torch can be the automation equipment that sets up on cutting station 10, and it is prior art, does not add the explanation more here. Of course, a mobile cutting gun may be used, held by a worker for cutting.

As shown in fig. 4 to 6, the assembling station includes a first double-seat positioner 21 and a V-shaped fixture 22, wherein the V-shaped fixture 22 is disposed on a rotating disk of the first double-seat positioner 21, and an intermediate shaft of the PD case 92 is rotatably mounted on the V-shaped fixture 22. Here the group is used for pairing the assembly station with wheel shell piece 91 that cutting station 10 cut out, first two machine 21 that shifts is used for placing retinue frock 93, retinue frock 93 includes the frame of cylinder and sets up the jackshaft in the frame, wheel shell piece 91 pastes the frame surface of cylinder to wrap up whole cylinder frame, be provided with side location structure 24 and a plurality of side hold-down mechanism 25 simultaneously at the side of cylinder frame, be used for with wheel shell piece 91 is fixed on the cylinder frame, forms preliminary location. The side pressing mechanism 25 here includes a C-shaped block 251, a pressing piece 252, and a bolt 253, the C-shaped block 251 is used for sheathing the wheel housing piece 91 and the cylindrical frame, and the pressing piece 252 is connected with the bolt 253 and is used for pressing the wheel housing piece 91 and the cylindrical frame, so that the wheel housing piece 91 is fixed on the cylindrical frame. The side positioning structure 24 is a positioning plate protruding out of the cylindrical frame and used for limiting the wheel casing sheet 91 in the axial direction. Preferably, a connecting bump stopper 23 may be disposed at the joint of the two adjacent wheel casing pieces 91 for circumferential fixation, that is, a plurality of connecting bump stoppers 23 with holes of the bolt 253 are disposed at the joint of the two adjacent wheel casing pieces 91, and may be fixed by welding, after the wheel casing pieces 91 are placed, the bolts 253 are used to lock the two matching connecting bump stoppers 23, and a plurality of connecting bump stoppers 23 may be disposed here to complete axial positioning of the wheel casing pieces 91; in particular, a spacer is also placed between two coupling lug stops 23 that match each other, for matching circumferential errors. Through the axial and circumferential positioning, the wheel housing piece 91 and the traveling tool 93 form a PD housing 92. Meanwhile, in this embodiment, the first double-seat positioner 21 adopts an existing double-seat positioner, a V-shaped clamp 22 is arranged on a turntable of the double-seat positioner and used for placing the follower fixture 93, and the V-shaped clamp 22 is used for facilitating the taking out and putting in of the follower fixture 93 or the PD shell 92. Here, a quick release structure is provided above the V-shaped clamp 22, so that the V-shaped clamp 22 can open the V-shaped opening to put in and take out the follower fixture 93 conveniently.

Referring to fig. 1, 2 and 7 to 10, the automatic tailor welding workstation 30 includes a transfer robot 31, a welder robot 32, a second dual-seat positioner 33, a feeding mechanism 40 and a first traveling mechanism 34, wherein the second dual-seat positioner 33 is adapted to receive a PD case 92, the transfer robot 31 and the welding robot are disposed on the first traveling mechanism 34, both of which are adapted to move on the first traveling mechanism 34, the transfer robot 31 is adapted to transfer a bump 94 placed on the feeding mechanism 40 to a designated position on an outer surface of the PD case 92, and the welding robot is adapted to weld the bump 94 to the PD case 92. The second double-seat positioner 33 is used for placing the assembled and paired PD shells 92, and has the same function as the first double-seat positioner 21, and preferably, a second traveling mechanism 26 is arranged at the bottom of one of the positioners of the double-seat positioner and is used for adjusting the distance of the double-seat positioner, so that the PD shells 92 with different specifications and sizes can be used. The transfer robot 31 is a multi-axis robot electrically connected to the control system, has a multi-degree-of-freedom movement function, and is provided on the first traveling mechanism 34 to facilitate movement in the X-axis direction along the traveling mechanism. Here, the first traveling mechanism 34 and the second traveling mechanism 26 may each be a conventional belt-driven moving mechanism capable of driving the member disposed above to perform movement in the X-axis direction. The welding robot includes a multi-axis robot, the end of which is provided with a welding gun, the welding robot is electrically connected to the control system, and is provided on the first traveling mechanism 34 with the transfer robot 31. The transfer robot is used for clamping the bump 94 placed on the loading mechanism 40 to the surface of the PD case 92 and placing the bump at a designated position by the control system, and when the bump 94 reaches the designated position, the control device drives the welding robot to move to the bump 94 position, and the bump 94 is welded by the welding gun.

As shown in fig. 11, the feeding mechanism 40 includes a feeding rack 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 bumps 94 placed on the bump placing plate 42 to the feeding position.

As shown in fig. 7 to 9, a quick-change structure is disposed at a tail end of a multi-axis manipulator of the transfer robot 31, a quick-change welding gun 361, a quick-change fixture 362 and a placing frame 363 thereof are further disposed beside the transfer robot 31, the quick-change welding gun 361 and the quick-change fixture 362 are placed on the placing frame 363, the quick-change welding gun 361 and the quick-change fixture 362 are suitable for being quickly matched with the quick-change mechanism, and the multi-axis manipulator can automatically move to a position between the quick-change welding gun 361 and the quick-change fixture 362 for switching installation. Here, the quick-change structure may use a conventional robot tool quick-change device, that is, a male disc is provided on the transfer robot 31, and a master disc matched with the male disc is provided on the quick-change welding gun 361 and the quick-change welding jig 362, so that the quick-change efficiency is improved. Here, the quick-change clamp 362 is an electromagnetic clamp, i.e., a clamp that generates magnetism by being electrified to suck the projection 94 for achieving a grabbing effect. When the transfer robot 31 transfers the bump 94, the multi-axis manipulator is switched to be installed as a quick-mounting clamp for clamping the bump 94; when the transfer robot 31 transfers the bump 94 to the PD case 92, the welding robot is first actuated to perform electric welding, and the transfer robot 31 is then driven to move to the placing frame 363 to detach the quick-change fixture 362, and the quick-change welding gun 361 is installed, and then the transfer robot is moved 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 barrel 35 is arranged on 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 conveniently and automatically take welding rods. The quick-assembly structure 311, the quick-change welding gun 361 and the quick-change clamp 362 are conventional structures, and the specific structures thereof are not described.

In another preferred embodiment, as shown in fig. 10, a bump positioning assembly 50 is further disposed on the first traveling mechanism 34, and is disposed between the transfer robot 31 and the loading mechanism 40 for roughly positioning a bump 94. The bump positioning assembly 50 comprises a receiving plate 52, wherein two adjacent sides of the receiving plate 52 are provided with barrier strips, and four studs 51 with fisheye joints are hinged to the bottom of the receiving plate 52 and used for adjusting the inclination angle of the receiving plate 52. The lug 94 is clamped and placed in the receiving tray 52 of the lug positioning assembly 50 through the transfer robot 31, and because the receiving tray 52 is in an inclined state, under the action of gravity, the lug 94 slides to the position of the barrier strip of the receiving tray 52, is limited by the barrier strip, completes gravity centering, and then is grabbed to the designated position of the PD shell 92 through the transfer robot 31 to perform accurate positioning on the X/Y/Z axis. Of course, here the precise positioning in the X/Y/Z axis is calculated by means of a control device. In this embodiment, a wear-resistant stainless steel plate is attached to the receiving plate where the receiving plate contacts the bumps 94 to reduce friction against the bumps 94. Another photoelectric sensor is further disposed on the bump positioning assembly 50, and the photoelectric sensor is used for detecting whether the transfer robot 31 moves in place.

In another preferred embodiment, the automatic tailor welding workstation 30 is further provided with a smoke processing system, the smoke processing system comprises a rotary type smoke cover 61 and a smoke host 62, the rotary type smoke cover 61 is rotatably covered above the welding area of the PD shell 92 through a rotating frame, and the smoke host 62 is communicated with the rotary type smoke cover 61. The rotating frame of the rotary type smoke dust cover 61 can be arranged on the positioner and is connected with the smoke dust host 62, and smoke dust is absorbed through the smoke dust host 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 the welding process can be effectively discharged into the smoke treatment device through the smoke treatment system, so that the situation that the smoke is diffused in the automatic tailor-welding workstation 30 to threaten workers is prevented.

The utility model discloses in, welding robot is with transfer robot 31's control flow: firstly, the manual work can select what type of workpiece is through the control device, and different parameters are called through the type selection of the workpiece: first, the transfer robot 31 transfers the workpiece, the welding robot spot-welds the workpiece, and then the transfer robot 31 changes the gun and spot-welds the workpiece together with the welding robot.

In the preferred embodiment of the present invention, the rotary discs of the first double-seat positioner 21 and the second double-seat positioner 33 are provided with an air cylinder 211 and a sensor 212, the air cylinder 211 has no power output, and is connected to the rotary discs through a connecting block for clamping the rotary discs, and the clamping point position of the air cylinder is adjustable; the sensor 212 is used to detect whether the turntable is in a zero position, where the sensor 212 may use a hall element or a photoelectric sensor 212, and the zero detection is prior art and will not be described herein. Through this setting, can control the high position of machine of shifting carousel more accurately.

The utility model discloses in, cutting station 10 with between the group assembly station 20 and the group assembly station 20 with all be provided with hoist device 70 between the automatic tailor-welded workstation 30, here hoist device 70 is used for hoisting materials such as blank, wheel shell piece 91, PD shell 92, and it can oscilaltion and quadriversal removal, makes the work piece hoist and mount to between each station. An accessory placement area 80 is also provided on the automated tailor welding workstation 30 for placing equipment accessories for convenient replacement by a user.

As shown in fig. 12, the working steps of the present invention are:

s1, hoisting a blank to a cutting station 10, cutting by a cutting gun along the movement of a profiling track of a positioning die 11 after positioning, cutting at least two wheel shell pieces 91 which can be combined into a whole, and then operating to an assembly station 20;

s2, fixing the wheel shell sheet 91 to a follow tool 93 on the assembly station 20, and fixing the wheel shell sheet 91 and the follow tool 93 through a connecting lug 94 and a side pressing mechanism 25 to enable the wheel shell sheet 91 and the follow tool 93 to be paired to form a cylindrical PD shell 92; hoisting the PD shell 92 to the automatic tailor welding workstation 30;

s3: in the automatic tailor-welding workstation 30, the transfer robot 31 first takes the bump 94 out of the feeding mechanism 40 to a designated position on the surface of the PD case 92, and the welding robot moves to the designated position to spot-weld the bump 94 to complete the initial fixation; and then the carrying robot moves to the placing rack 363 to switch the quick-change fixture 362 into the quick-change welding gun 361, and then moves back to the initially fixed lug 94 on the surface of the PD shell 92, and the lug 94 is welded together with the welding robot.

S4: after welding, the transfer robot 31 moves to the placing rack 363 again, the quick-change welding gun 361 is switched to the quick-change fixture 362, and the step of S3 is repeated until welding of all the bumps 94 is completed.

By adopting the technical scheme, the utility model discloses can gain following technological effect: the utility model discloses a from cutting wheel shell piece 91 to pairing and assembling into PD shell 92, go to last welding convex block 94's mechanism again and optimize the setting, realized the automated production of PD wheel, effectively improved production efficiency and production security.

Through the utility model discloses, make welded efficiency improve greatly on the one hand, on the other hand has liberated artifical work in welding process, has effectively reduced manual welding's danger. Meanwhile, the quality of the product is more stable through automatic welding.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

Claims (10)

1. A PD wheel automated welding system, comprising: the welding device comprises a cutting station, a fitting-up assembling station, an automatic tailor-welding workstation and a control device, wherein the control device is electrically connected with the cutting station, the fitting-up assembling station and the automatic tailor-welding workstation; wherein the content of the first and second substances,

the cutting station is adapted to cut the blank into spliceable wheel casing pieces;

the assembly station is suitable for assembling and fixing a plurality of wheel shell pieces on a follow-up tool to form a cylindrical PD shell;

the automatic tailor-welding workstation is used for automatically welding a plurality of lugs on the PD shell and comprises a carrying robot, a welding robot, a quick-change welding gun and a quick-change clamp; the welding robot is used for welding the lug; the carrying robot is provided with a quick-change structure which can be matched with the quick-change welding gun and the quick-change fixture, and is configured to be capable of clamping the bump to a specified position when being connected with the quick-change fixture, and capable of welding the bump when being connected with the quick-change welding gun.

2. The PD wheel automated welding system of claim 1, wherein the cutting station includes a cutting gun and a positioning die, the positioning die adapted to place a semi-circular blank, the cutting gun disposed outside of the positioning die for cutting the blank into spliceable wheel shell pieces along a contoured track on the positioning die.

3. The automated welding system for PD wheels of claim 2, wherein the group 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 the V-shaped clamp is suitable for rotatably placing a follow-up fixture, so that a wheel shell piece can be fixedly arranged on the whole follow-up fixture.

4. The automated welding system for PD wheels of claim 3, characterized in that a plurality of side positioning structures and side pressing mechanisms are arranged on two sides of the follow-up tooling for limiting and fixing the wheel shell piece.

5. The PD-wheel automated welding system of claim 1, wherein the automated tailor welding workstation further comprises a second dual-seat positioner adapted to receive a PD case, a feed mechanism, and a first travel mechanism on which the handling robot and the welding robot are disposed, both of which are movable on the first travel mechanism, the handling robot for handling a bump placed on the feed mechanism to a designated position outside the PD case, and the welding robot for welding the bump to the PD case.

6. The automated welding system for PD wheels according to claim 5, wherein a placing rack is further arranged on the first traveling mechanism, and the placing rack is used for placing the quick-change welding gun and the quick-change fixture.

7. The PD wheel automated welding system of claim 5, wherein a second traveling mechanism is provided at the bottom of the second double-seat positioner.

8. The PD wheel automated welding system of claim 5, wherein the first travel mechanism is further provided with a cam positioning assembly, the cam positioning assembly comprises a receiving plate, and four studs with fisheye joints are hinged to the bottom of the receiving plate.

9. The PD wheel automated welding system of claim 5, wherein the automated tailor welding workstation is further provided with a fume handling system including a rotary fume hood rotatably housed over the welding region of the PD enclosure and a fume host in communication with the rotary fume hood.

10. The PD wheel automated welding system of claim 1, wherein spreaders are provided between the cutting station and the set-up assembly station and between the set-up assembly station and the automated tailor welding workstation.

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