CN115837552B

CN115837552B - Multi-station clamping and positioning device for welding outer tube column casing

Info

Publication number: CN115837552B
Application number: CN202310151568.2A
Authority: CN
Inventors: 孟东北; 于法敬; 梁学波; 杨俊仙
Original assignee: Xinxiang Gaozheng Precision Machinery Co ltd
Current assignee: Xinxiang Gaozheng Precision Machinery Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-05-02
Anticipated expiration: 2043-02-22
Also published as: CN115837552A

Abstract

The invention discloses a multi-station clamping and positioning device for welding an outer tube column casing, which comprises a lifting table, a central rotating frame, a whole machine support frame and a welding and clamping tool, wherein four stations are respectively arranged on four sides of the central rotating frame, the four stations are respectively a clamping station, a pushing station, a cooling station and a purging station, each station is provided with the lifting table, the upper end of the central rotating frame is provided with a lifting cylinder, the telescopic end of the lifting cylinder is fixedly connected with the lifting table, the welding and clamping tool is in sliding connection with the upper surface of the lifting table, the welding and clamping tool comprises a clamping support plate, and the upper surface of the clamping support plate is provided with a bracket positioning component and an end positioning component for positioning the outer tube column casing and the bracket; the device can once only accomplish the clamping location of outer tube column casing, need not repeated clamping, realizes the automatic switch-over of station simultaneously, accomplishes clamping, welding propelling movement, cooling and the sweeping of outer tube column casing on line in succession, has improved work efficiency.

Description

Multi-station clamping and positioning device for welding outer tube column casing

Technical Field

The invention relates to the technical field of outer tube column casing welding, clamping and positioning, in particular to a multi-station clamping and positioning device for outer tube column casing welding.

Background

The outer tube column casing is an important component part in a vehicle steering system, and is connected with a steering wheel through the inner tube column casing and used for transmitting the torque of the steering wheel.

An angle adjusting bracket, an instrument bracket and a limiting bracket are welded on the outer surface of the outer column casing; the outer tubular column casing after stamping forming is characterized in that an angle adjusting bracket, an instrument bracket and a limiting bracket are required to be fixed through a fixture, and then an industrial robot is adopted to weld and fix the joint of the bracket and the outer tubular column, so that a plurality of fixture clamps are required to be respectively fixed; the existing mode is that an angle adjusting bracket and an outer tube column casing are fixed through a fixture, then welding is carried out, the outer tube column casing after being welded is taken down, the instrument bracket and the outer tube column casing are fixed again through another fixture, then welding is carried out, and likewise, a limiting bracket is welded in this way, the process is complex, frequent repeated clamping and positioning are needed, the operation is complex, errors can be caused in the repeated clamping and positioning process, and the accuracy of the welding position is affected; because the cooling of the fixture clamp and the welding point is needed to be replaced after welding, a batch of angle adjusting brackets are welded during welding, and then another batch of brackets are welded, and a batch welding mode is adopted, so that the time can be saved, but the efficiency is still not high.

The existing fixture has the defects that only one bracket can be fixed at a time, repeated clamping and positioning are needed, and in the process, the production time is delayed, so that not only is labor wasted, but also the efficiency is low, and continuous operation cannot be realized; because the temperature after welding is high, workers are easy to scald when the welding parts are taken out; the surface of the welding piece is stuck with scraps, and the welding piece is required to be cleaned again; aiming at the problems, a multi-station clamping and positioning device for welding an outer tubular column casing is provided.

Disclosure of Invention

The invention aims to overcome the existing defects, and provides the multi-station clamping and positioning device for welding the outer tube column casing, which can finish the clamping and positioning of the outer tube column casing, the angle adjusting bracket, the instrument bracket and the limiting bracket at one time without repeated clamping, simultaneously realize automatic station switching, realize continuous production, continuously finish the clamping, welding pushing, cooling and purging of the outer tube column casing, greatly improve the working efficiency, and has accurate clamping position and convenient operation, thereby effectively solving the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a multi-station clamping and positioning device for welding an outer tube column casing comprises a lifting table, a central rotating frame, a whole machine support frame and a welding clamping tool, wherein four side faces of the central rotating frame are respectively provided with four stations, the four stations are respectively arranged on the four stations, the four stations are respectively a clamping station, a pushing station, a cooling station and a blowing station, each station is provided with the lifting table, the upper end of the central rotating frame is provided with a lifting cylinder, the telescopic end of the lifting cylinder is fixedly connected with the lifting table, the welding clamping tool is in sliding connection with the upper surface of the lifting table, the welding clamping tool comprises a clamping support plate, the upper surface of the clamping support plate is provided with a support positioning component and an end positioning component for positioning the outer tube column casing and the support, the right side of the whole machine support frame is provided with a welding station, the welding station comprises a welding station, the welding station is fixed on the right side of the whole machine support frame, the welding station is fixedly provided with a station push-pull cylinder, the telescopic end of the station push-pull cylinder corresponds to the welding clamping tool on the pushing station, the telescopic end of the station push-pull cylinder is connected with the lower surface of the clamping support plate through an electromagnet II, and a spacer is arranged between the welding station and the pushing station.

Further, the central rotating frame comprises roof, bottom plate, spliced pole and rotatory center pin, and the spliced pole is connected as whole with roof and bottom plate, and rotatory center pin passes roof and bottom plate, and rotatory center pin's upper and lower both ends are rotated with the complete machine support frame respectively and are connected, are provided with on the complete machine support frame and are used for driving rotatory center pin pivoted servo motor, are provided with spacing spout on the side of spliced pole, and the elevating platform sets up to L shape structure, is provided with spacing slide rail on the vertical face of elevating platform, spacing slide rail and spacing spout sliding connection.

Further, the lower surface of clamping backup pad and the butt joint guide rail II sliding connection on the elevating platform surface, the upper surface of welding bench is provided with butt joint guide rail I, and butt joint guide rail I and butt joint guide rail II correspond the end and are provided with the guide part respectively, are provided with the mounting hole on the side of elevating platform, and this mounting hole department is provided with electro-magnet I.

Further, the baffle piece comprises a baffle plate and an outer frame, the lower end of the outer frame is fixed on the whole machine support frame, the baffle plate is arranged on the outer frame, and rectangular holes for the welding clamping tool to pass through are formed in the surface of the baffle plate.

Further, support locating component includes support adjustment slide, support locating piece I, side limit frame and backup pad subassembly, support locating piece I passes through bolt fastening on support adjustment slide, support locating piece I's upper surface is provided with the spacing groove, the one end of spacing groove sets up to the inclined plane, the other end of spacing groove sets up to vertical face, backup pad subassembly sets up the front side at support locating piece I, the backup pad subassembly includes inboard backup pad and outside backup pad, the lower extreme of inboard backup pad is fixed on support adjustment slide, be provided with the fixed pin on the lateral surface of inboard backup pad, outside backup pad wears on the fixed pin, outside backup pad passes through hexagon socket head cap screw with inboard backup pad to be fixed, the upper surface of clamping backup pad is provided with outer guide rail and interior guide rail, support adjustment slide is connected with outer guide rail, the regulation hole in support adjustment slide and the clamping backup pad passes through bolt fastening, the side limit frame sets up in one side of backup pad subassembly, the side limit frame includes the side supporting shoe, the lower extreme of side supporting shoe is fixed at support adjustment slide, support adjustment slide upper end passes through bolted connection has L shape limiting plate.

Further, the end positioning assembly comprises an L-shaped end positioning slide plate, an end fixing baffle and a threaded rod, the L-shaped end positioning slide plate is in sliding connection with an inner guide rail on the upper surface of the clamping support plate, an end positioning pin is arranged on the vertical surface of the L-shaped end positioning slide plate, a heat dissipation hole is formed in the vertical surface of the L-shaped end positioning slide plate, one end of the threaded rod penetrates through the end fixing baffle to be in rotary connection with the vertical surface of the L-shaped end positioning slide plate, the other end of the threaded rod is connected with an operation hand disc, an end guide pillar is arranged on the end fixing baffle, and the end guide pillar penetrates through the end fixing baffle to be in fixed connection with the vertical surface of the L-shaped end positioning slide plate.

Further, extension parts are arranged on two sides of one end of the horizontal plane of the L-shaped end positioning slide plate, a support positioning block II is arranged on the extension parts, and a positioning and mounting chute is arranged on the surface of the support positioning block II.

Further, cylinder clamping mechanisms are respectively arranged on two sides of the support positioning block I, each cylinder clamping mechanism comprises a clamping moving block, a fixed guide block II and a clamping positioning cylinder II, a guide rod connected with the telescopic end of the clamping positioning cylinder II penetrates through the fixed guide block II to be fixedly connected with the clamping moving block, a side positioning pin is arranged on the clamping moving block, a fixed guide block I is arranged on the clamping supporting plate, a jacking column is penetrated on the fixed guide block I, a clamping positioning cylinder I is fixed on an outer side vertical plate of the fixed guide block I, and the telescopic end of the clamping positioning cylinder I is connected with the jacking column.

Further, the cooling device also comprises a cooling water tank, wherein the lower end of the cooling water tank is fixed on the whole machine support frame, and an opening at the upper end of the cooling water tank corresponds to the cooling station and the purging station.

Further, be provided with on the complete machine support frame of blowing station top and blow mechanism, blow the mechanism and include air pocket and high pressure spray tube, through the pipe connection between air pocket and the high pressure spray tube, be provided with the solenoid valve on this pipeline, the lower surface of high pressure spray tube is provided with the air nozzle, and this air nozzle corresponds with the welding centre gripping frock on the blowing station, and the air pocket passes through the pipe to be connected with outside air pump, and solenoid valve control high pressure spray tube opens and shuts.

Compared with the prior art, the invention has the beneficial effects that:

1. the outer tube column casing and the angle adjusting support, the instrument support and the limiting support can be clamped and positioned at one time through the support positioning assembly and the end positioning assembly on the welding clamping tool, repeated clamping is not needed, clamping and positioning are carried out on the front end and the rear end of the outer tube column casing simultaneously, the outer tube column casing is guaranteed to be fixed firmly, the positions of the support positioning assembly and the end positioning assembly are adjustable, and the requirement of position adjustment of the support on the outer tube column casing is met.

2. The device can realize the automatic switch-over of station, realizes continuous production, accomplishes clamping, the welding propelling movement, cooling and the sweeping of outer tubular column section of thick bamboo in succession, has improved work efficiency, plays the effect to outer tubular column section of thick bamboo lateral surface spacing and lower part support through side spacing and backup pad subassembly, ensures that the position is accurate, and the structure of change can be dismantled to inboard backup pad to the support of outer tubular column section of thick bamboo of adaptation non-passing specification.

3. The lifting cylinder on the cooling station can drive the lifting platform to lift, the outer tube column casing welded on the welding clamping tool is driven to enter into the cooling water tank for cooling, cooling of the welding point is accelerated, station switching is achieved through the central rotating frame, and then the welding piece is purged and cleaned through the purging station.

4. The telescopic end of the station push-pull air cylinder is connected with the welding clamping tool through the electromagnet II, the station push-pull air cylinder drives the welding clamping tool to enter a welding station, welding work is carried out through an industrial robot, the guide part plays a role in transition guiding when the station is switched, the clamping support plate is convenient to switch between the pushing station and the welding station, and accurate guiding is achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the invention with the cooling water tank removed and the welding table;

FIG. 3 is a schematic diagram of a welding clamping tool according to the present invention;

FIG. 4 is an enlarged schematic view of the structure of the present invention at A;

FIG. 5 is a schematic diagram of a left-hand structure of the welding clamping tool of the present invention;

FIG. 6 is a schematic view of a lifting platform according to the present invention;

FIG. 7 is a schematic view of a bracket positioning assembly according to the present invention;

FIG. 8 is a schematic view of the structure of the bracket positioning block I;

FIG. 9 is a schematic view of an end positioning assembly according to the present invention;

FIG. 10 is a schematic top view of the overall structure of the present invention;

fig. 11 is a schematic view of the whole bottom structure of the present invention.

In the figure: 1 lifting table, 2 cooling water tank, 3 connecting column, 4 welding table, 5 butt joint guide rail I, 6 station push-pull cylinder, 7 rectangular hole, 8 outer frame, 9 baffle, 10 lifting cylinder, 11 roof, 12 servo motor, 13 high-pressure spray pipe, 14 air bag, 15 solenoid valve, 16 complete machine support frame, 17 welding clamping fixture, 18 bottom plate, 19 rotation center shaft, 20 clamping support plate, 21 support positioning component, 22 outer guide rail, 23 inner guide rail, 24 end positioning component, 25 guide part, 26 top tightening column, 27 fixed guide block I, 28 clamping positioning cylinder I, 29 limit slide rail, 30 electromagnet I, 31 mounting hole, 32 side support block, 33L shaped limit plate, 34 side positioning pin, 35 clamping moving block, 36 fixed guide block II, 37 clamping positioning cylinder II, 38 inner side support plate, 39 outer side support plate, 40 fixing pin, 41 inner hexagon screw, 42 inclined plane, 43 limit groove, 44 vertical plane, 45 support positioning block I, 46 support II, 47 positioning installation chute, 48L shaped end positioning slide plate, 49 heat radiation hole positioning block II, 50 end positioning pin, 52, 53 operation guide rail, 54

end support bracket

58, 55, slide plate support plate 60, guide rail end part, guide rail support plate 60, guide rail end part, guide rail 60, end part adjusting support rail II, and baffle plate 60.

Description of the embodiments

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-11, the present invention provides a technical solution: a multi-station clamping and positioning device for welding an outer tubular column casing comprises a lifting table 1, a central rotating frame, a whole machine supporting frame 16 and a welding clamping tool 17, wherein four sides of the central rotating frame are respectively provided with four stations, the four clamping tools 17 are respectively arranged on the four stations, the four stations are respectively a clamping station, a pushing station, a cooling station and a purging station, the central rotating frame can drive the four stations to rotate, each time of rotation is 90 degrees, the switching of the stations is realized, each station is relatively independent, each station is provided with the lifting table 1, the upper end of the central rotating frame is provided with a lifting cylinder 10, the telescopic end of the lifting cylinder 10 is fixedly connected with the lifting table 1, the welding clamping tool 17 is in sliding connection with the upper surface of the lifting table 1, the telescopic end of the lifting cylinder 10 drives the lifting table 1 to lift, the lifting of the welding clamping tool 17 is further realized, the welding clamping tool 17 comprises a clamping supporting plate 20, the upper surface of the clamping supporting plate 20 is provided with a bracket positioning component 21 and an end positioning component 24 for positioning an outer tube column and a bracket, the right side of the whole machine supporting frame 16 is provided with a welding station, the welding station comprises a welding table 4, the welding table 4 is fixed on the right side of the whole machine supporting frame 16, a station push-pull cylinder 6 is fixed on the welding table 4, the station push-pull cylinder 6 is fixed at an open slot of the welding table 4, the open slot corresponds to the open slot on the lifting table 1, the telescopic end of the station push-pull cylinder 6 corresponds to the welding clamping tool 17 on the pushing station, the telescopic end of the station push-pull cylinder 6 is connected with the lower surface of the clamping supporting plate 20 of the welding clamping tool 17 through an electromagnet II 56, the electromagnet II 56 realizes the connection of the telescopic end of the station push-pull cylinder 6 with the lower surface of the clamping supporting plate 20, and then station push-and-pull cylinder 6 stretches out and draws back and drive welding centre gripping frock 17 and enter into the welding station, be provided with the baffle piece between welding station and the propelling movement station, the baffle piece includes baffle 9 and outer frame 8, the lower extreme of outer frame 8 is fixed on complete machine support frame 16, the lower surface of complete machine support frame 16 is provided with supporting pad 57 for support complete machine support frame 16 is whole, baffle 9 installs on outer frame 8, be provided with the rectangular hole 7 that is used for welding centre gripping frock 17 to pass through on the surface of baffle 9, the baffle piece can also select to use and separate the shelves curtain, hang the curtain on outer frame 8, offer on the curtain be used for welding centre gripping frock 17 to pass through the hole can.

The center rotating frame comprises a top plate 11, a bottom plate 18, a connecting column 3 and a rotating central shaft 19, the connecting column 3 connects the top plate 11 with the bottom plate 18 into a whole, the rotating central shaft 19 passes through the top plate 11 and the bottom plate 18, the upper end and the lower end of the rotating central shaft 19 are respectively connected with a whole machine support frame 16 in a rotating way, a servo motor 12 for driving the rotating central shaft 19 to rotate is arranged on the whole machine support frame 16, the rotating central shaft 19 drives the center rotating frame to rotate, a limit sliding groove is arranged on the side surface of the connecting column 3, the lifting table 1 is in an L-shaped structure, a limit sliding rail 29 is arranged on the vertical surface of the lifting table 1, the limit sliding rail 29 is in sliding connection with the limit sliding groove, the lifting table 1 is structurally stable in the lifting process, a butt joint guide rail II 55 on the lower surface of a clamping support plate 20 is in sliding connection with the butt joint guide rail II 55 on the surface of the lifting table 1, a butt joint guide rail I5 is respectively arranged on the corresponding end of the butt joint guide II 55, the guide part 25 plays a transitional guide role, the butt joint guide is convenient to realize the switching of the work position 20 on the side of the pushing work position and the accurate lifting support plate 3, the electromagnet is fixedly clamped in the lifting position of the lifting support plate 30 is fixedly arranged at the position of the lifting support plate 31, and the electromagnet 30 is firmly fixed in the lifting position of the lifting position and the lifting support plate is fixed by the electromagnet 30.

The bracket positioning assembly 21 comprises a bracket adjusting slide plate 58, a bracket positioning block I45, a side limiting frame and a support plate assembly, wherein the bracket positioning block I45 is fixed on the bracket adjusting slide plate 58 through bolts, the upper surface of the bracket positioning block I45 is provided with a limiting groove 43, the limiting groove 43 is used for limiting the lower end of the angle adjusting frame and playing a supporting role, one end of the limiting groove 43 is provided with an inclined plane 42, the other end of the limiting groove 43 is provided with a vertical surface 44, the inclined plane 42 is convenient for entering the lower end of the angle adjusting bracket into the limiting groove 43 in the clamping process, and is also used for matching with the arc chamfer of the lower end of the angle adjusting bracket to facilitate the taking out, the vertical surface 44 is used for limiting the lower end of the angle adjusting bracket to ensure the position of the angle adjusting bracket to be correct, the support plate assembly is arranged on the front side of the bracket positioning block I45, the support plate assembly comprises an inner support plate 38 and an outer support plate 39, the lower end of the inner support plate 38 is fixed on the support adjusting slide plate 58, the outer side surface of the inner support plate 38 is provided with a fixing pin 40, the outer support plate 39 passes through the fixing pin 40, the outer support plate 39 and the inner support plate 38 are fixed by an inner hexagon screw 41, the upper ends of the outer support plate 39 and the inner support plate 38 are both provided with arc structures which are used for being attached to the outer surface of the outer tubular column and play a role in reliable support, the inner support plate 38 is provided with a detachable structure which is convenient for changing the inner support plates 38 with different specifications so as to meet the use requirement, the upper surface of the clamping support plate 20 is provided with an outer guide rail 22 and an inner guide rail 23, the support adjusting slide plate 58 is connected with the outer guide rail 22, the support adjusting slide plate 58 is fixed with an adjusting hole on the clamping support plate 20 by bolts, a side limiting frame is arranged on one side of the support plate component, the side limiting frame comprises a side supporting block 32, the lower end of the side supporting block 32 is fixed on a support adjusting sliding plate 58, the upper end of the support adjusting sliding plate 58 is connected with an L-shaped limiting plate 33 through a bolt, the L-shaped limiting plate 33 is used for limiting the side face of an outer pipe column casing, the position of the outer pipe column casing is ensured to be accurate, and meanwhile, an adjusting long hole is formed in the L-shaped limiting plate 33 and used for adjusting the position of the L-shaped limiting plate 33, and a loose connecting bolt can be used for adjusting the position of the L-shaped limiting plate 33 to meet the limit of the outer pipe column casing with different specifications.

The end positioning assembly 24 comprises an L-shaped end positioning slide plate 48, an end fixing baffle 59 and a threaded rod 52, wherein the L-shaped end positioning slide plate 48 is in sliding connection with the inner guide rail 23 on the upper surface of the clamping support plate 20, an end positioning pin 50 is arranged on the vertical surface of the L-shaped end positioning slide plate 48, the end positioning pin 50 is used for positioning a bottom limiting support on an outer tubular column, the end positioning pin 50 is inserted into a hole on the bottom limiting support to realize positioning, meanwhile, the vertical surface of the L-shaped end positioning slide plate 48 plays a role in supporting the end of the outer tubular column, a heat dissipation hole 49 is formed in the vertical surface of the L-shaped end positioning slide plate 48, the heat dissipation hole 49 is used for heat dissipation during welding of the outer tubular column by an industrial robot, one end of the threaded rod 52 penetrates through the end fixing baffle 59 to be in rotary connection with the vertical surface of the L-shaped end positioning slide plate 48, the other end of the threaded rod 52 is connected with an operation hand disc 53, the position of the L-shaped end positioning slide plate 48 can be adjusted by rotating the operation hand disc 53, the position of the support can be adjusted, the requirement of the position of the support can be met, an end guide pillar 54 is arranged on the end fixing baffle 59, the end 54 passes through the end fixing baffle 59 and plays a role in supporting the end of the end fixing baffle 54 in supporting the accurate positioning, and the end of the end plate 48 in the process of fixing the guide pillar.

The extension portion 60 is arranged on two sides of one end of the horizontal plane of the L-shaped end positioning slide plate 48, the support positioning block II 46 is arranged on the extension portion 60, the positioning installation chute 47 is arranged on the surface of the support positioning block II 46, the lower end of the shield support is inserted into the installation chute 47 and used for limiting the shield support, and the welding position of the upper end of the shield support is attached to the outer pipe column casing.

The two sides of the support positioning block I45 are respectively provided with an air cylinder clamping mechanism, the air cylinder clamping mechanism comprises a clamping moving block 35, a fixed guide block II 36 and a clamping positioning air cylinder II 37, a guide rod connected with the telescopic end of the clamping positioning air cylinder II 37 penetrates through the fixed guide block II 36 and is fixedly connected with the clamping moving block 35, a side positioning pin 34 is arranged on the clamping moving block 35, the side positioning pin 34 is used for positioning a side hole of an angle adjusting support, the clamping positioning air cylinder II 37 stretches and contracts to drive the clamping moving block 35 to move, the side positioning pin 34 on the clamping moving block 35 is inserted into the side hole of the angle adjusting support, positioning is achieved, synchronous clamping is achieved through the air cylinder clamping mechanisms on the two sides, the fixing is guaranteed, the fixing guide block I27 is fixedly arranged on the clamping support plate 20, the fixing guide block I27 penetrates through the jacking column 26, the outer side face vertical plate of the fixing guide block I27 is fixedly provided with the clamping positioning air cylinder I28, the telescopic end of the clamping positioning air cylinder I28 is connected with the jacking column 26, one end of the jacking column 26 is driven to move through the telescopic drive of the clamping positioning air cylinder I28, and one end of the jacking column 26 is jacked to the end of an outer tube, and the end of the outer tube positioning assembly is fixedly matched with the clamping column I28 through the end positioning assembly 24.

The lower extreme of coolant tank 2 is fixed on complete machine support frame 16, and coolant tank 2's upper end opening is corresponding with cooling station and blowing station, and coolant tank 2's size sets up according to actual demand, still can set up the water pump and spray the cooling through the weldment, and rotatory center pin 19 when needs pass coolant tank 2, adopts rotary seal to seal its junction, also can set up the bearing frame of rotatory center pin 19 lower extreme in coolant tank 2, and specific arranging according to the user demand.

The whole machine support frame 16 above the purging station is provided with a purging mechanism, the purging mechanism comprises an air bag 14 and a high-pressure spray pipe 13, the air bag 14 is connected with the high-pressure spray pipe 13 through a pipeline, an electromagnetic valve 15 is arranged on the pipeline, the lower surface of the high-pressure spray pipe 13 is provided with an air nozzle, the air nozzle corresponds to a welding clamping tool 17 on the purging station, the air bag 14 is connected with an external air pump through the pipeline, the electromagnetic valve 15 controls the opening and closing of the high-pressure spray pipe 13, and scraps and moisture on an outer pipe column casing and a support on the welding clamping tool 17 through high-pressure air sprayed out of the air nozzle are blown away and fall into a cooling water tank 2, so that drying is accelerated, and the working efficiency is indirectly improved.

Clamping and positioning: the lower end of the angle adjusting frame is placed in a limiting groove 43 on a support positioning block I45, then a clamping positioning cylinder II 37 drives a clamping moving block 35 to move, and a side positioning pin 34 on the clamping moving block 35 enters a positioning hole on the support positioning block I45 to realize clamping; two sides of the lower end of the shield support are inserted into a positioning and mounting chute 47 of a support positioning block II 46 to realize positioning; the limiting support is penetrated into the end positioning pin 50, then one end of the outer pipe column casing passes through the groove of the shield support and is abutted against the hole of the limiting support, the clamping positioning cylinder I28 drives the jacking column 26 to move to jack up one end of the outer pipe column casing, clamping and positioning are completed, fixing of the outer pipe column casing is achieved, the inner side supporting plate 38 plays a role in reliable supporting in the jacking process, and the L-shaped limiting plate 33 is used for limiting the side face of the outer pipe column casing and ensuring accurate position of the outer pipe column casing.

The servo motor 12 drives the central rotating frame to rotate, the clamping station is switched to the pushing station, at the moment, the electromagnet I30 is powered off, the clamping support plate 20 is separated from the lifting platform 1, the station push-pull cylinder 6 stretches out and draws back, the electromagnet II 56 realizes the connection between the stretching end of the station push-pull cylinder 6 and the welding clamping tool 17, and the station push-pull cylinder 6 drives the welding clamping tool 17 to enter the welding station, so that welding work is performed through an industrial robot; after the welding work is finished, the station push-pull cylinder 6 pushes the welding clamping tool 17 to move to a pushing station; the electromagnet I30 is electrified, and the clamping support plate 20 is attracted with the lifting table 1; the center rotating frame drives the welding clamping tool 17 to enter a cooling station.

The expansion and contraction of the lifting cylinder 10 drives the lifting table 1 to lift, and then the lifting of the welding clamping tool 17 is realized, the welding clamping tool 17 enters the cooling water tank 2, the welded outer pipe column casing is cooled, and after cooling is completed, the expansion and contraction of the lifting cylinder 10 drives the lifting table 1 to lift, and the welding clamping tool 17 is switched to a purging station.

The electromagnetic valve 15 can control the opening and closing of the high-pressure spray pipe 13, and high-pressure gas sprayed by the air nozzle blows away scraps and moisture on an outer pipe column casing and a bracket on the welding clamping tool 17 and falls into the cooling water tank 2, so that the drying is accelerated, and the working efficiency is indirectly improved; after purging is completed; the clamping and positioning cylinder I28 drives the jacking column 26 to move, and the outer tube column casing is loosened; simultaneously, the clamping and positioning cylinder II 37 drives the clamping and moving block 35 to move, the side positioning pin 34 is loosened, and then the welded outer tubular column casing is taken out.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Be used for outer tube column casing welded multistation clamping positioner, including elevating platform (1), central revolving frame, whole quick-witted support frame (16) and welding centre gripping frock (17), its characterized in that: four stations are respectively arranged on four sides of the center rotating frame, four clamping tools (17) are respectively arranged on the four stations, welding clamping tools (17) comprise clamping support plates (20), support positioning assemblies (21) and end positioning assemblies (24) for positioning an outer column casing and a support are arranged on the upper surfaces of the clamping support plates (20), the support positioning assemblies (21) comprise support adjusting slide plates (58), support positioning blocks I (45), side limiting frames and support plate assemblies, the support positioning blocks I (45) are fixed on the support adjusting slide plates (58) through bolts, limiting grooves (43) are formed in the upper surfaces of the support positioning blocks I (45), cylinder clamping mechanisms for clamping the supports are respectively arranged on the two sides of the support positioning blocks I (45), the support plate assemblies are arranged on the front sides of the support positioning blocks I (45), each support plate assembly comprises an inner support plate (38) and an outer support plate (39), the lower ends of the inner support plates (38) are fixed on the support adjusting slide plates (58), fixing pins (40) are arranged on the outer side surfaces of the inner support plates (38), the outer support plates (39) are threaded on the support plates (40), the inner support plates (39) are fixed on one sides of the inner side of the hexagonal support plates (38) through limiting frames, the end positioning assembly (24) comprises an L-shaped end positioning slide plate (48), an end fixing baffle (59) and a threaded rod (52), the L-shaped end positioning slide plate (48) is in sliding connection with the clamping support plate (20), one end of the threaded rod (52) penetrates through the end fixing baffle (59) to be connected with the vertical surface of the L-shaped end positioning slide plate (48) in a rotating mode, the other end of the threaded rod (52) is connected with an operation hand disc (53), a welding station is arranged on the right side of the whole support frame (16), a baffle piece is arranged between the welding station and the pushing station, one end of the limiting groove (43) is arranged to be an inclined surface (42), the other end of the limiting groove (43) is arranged to be a vertical surface (44), an outer guide rail (22) and an inner guide rail (23) are arranged on the upper surface of the clamping support plate (20), the support adjusting slide plate (58) is connected with the outer guide rail (22), an adjusting hole on the support adjusting slide plate (58) and the clamping support plate (20) is fixed through a bolt, the side limiting frame comprises a side supporting block (32), and the lower end of the side supporting block (32) is fixed on the support adjusting slide plate (58) through the L-shaped limiting plate.

2. The multi-station clamping and positioning device for welding an outer tubular column according to claim 1, wherein: the four stations are respectively clamping stations, pushing stations, cooling stations and purging stations, each station is provided with a lifting platform (1), the upper end of a central rotating frame is provided with a lifting cylinder (10), the telescopic end of the lifting cylinder (10) is fixedly connected with the lifting platform (1), a welding clamping tool (17) is slidably connected with the upper surface of the lifting platform (1), the central rotating frame is composed of a top plate (11), a bottom plate (18), a connecting column (3) and a rotating central shaft (19), the top plate (11) and the bottom plate (18) are connected into a whole through the connecting column (3), the rotating central shaft (19) penetrates through the top plate (11) and the bottom plate (18), the upper end and the lower end of the rotating central shaft (19) are respectively connected with a whole supporting frame (16) in a rotating mode, a servo motor (12) for driving the rotating central shaft (19) is arranged on the whole supporting frame (16), a limiting sliding groove is arranged on the side face of the connecting column (3), the lifting platform (1) is arranged to be of an L-shaped structure, and a limiting sliding rail (29) is arranged on the vertical face of the lifting platform (1).

3. The multi-station clamping and positioning device for welding an outer tubular column according to claim 2, wherein: the lower surface of clamping backup pad (20) and butt joint guide rail II (55) sliding connection on elevating platform (1) surface, the upper surface of welding bench (4) is provided with butt joint guide rail I (5), butt joint guide rail I (5) are provided with guide part (25) respectively with butt joint guide rail II (55) corresponding end, are provided with mounting hole (31) on the side of elevating platform (1), and this mounting hole (31) department is provided with electro-magnet I (30).

4. The multi-station clamping and positioning device for welding an outer tubular column according to claim 1, wherein: the welding station includes welding bench (4), the right side at complete machine support frame (16) is fixed to welding bench (4), be fixed with station push-and-pull cylinder (6) on welding bench (4), the flexible end of station push-and-pull cylinder (6) corresponds with welding centre gripping frock (17) on the propelling movement station, and the flexible end of station push-and-pull cylinder (6) is connected with clamping backup pad (20) lower surface through electro-magnet II (56), it includes baffle (9) and outer frame (8) to separate the shelves piece, the lower extreme of outer frame (8) is fixed on complete machine support frame (16), baffle (9) are installed on outer frame (8), be provided with rectangular hole (7) that are used for welding centre gripping frock (17) to pass through on the surface of baffle (9).

5. The multi-station clamping and positioning device for welding an outer tubular column according to claim 1, wherein: the end positioning assembly (24) comprises an L-shaped end positioning slide plate (48), an end fixing baffle plate (59) and a threaded rod (52), the L-shaped end positioning slide plate (48) is in sliding connection with an inner guide rail (23) on the upper surface of the clamping support plate (20), an end positioning pin (50) is arranged on the vertical surface of the L-shaped end positioning slide plate (48), a heat radiation hole (49) is formed in the vertical surface of the L-shaped end positioning slide plate (48), an end guide pillar (54) is arranged on the end fixing baffle plate (59), and the end guide pillar (54) penetrates through the end fixing baffle plate (59) to be fixedly connected with the vertical surface of the L-shaped end positioning slide plate (48).

6. The multi-station clamping and positioning device for welding an outer tubular column according to claim 5, wherein: extension parts (60) are arranged on two sides of one end of the horizontal plane of the L-shaped end positioning slide plate (48), a support positioning block II (46) is arranged on the extension parts (60), and a positioning and mounting chute (47) is arranged on the surface of the support positioning block II (46).

7. The multi-station clamping and positioning device for welding an outer tubular column according to claim 1, wherein: the cylinder clamping mechanism comprises a clamping moving block (35), a fixed guide block II (36) and a clamping positioning cylinder II (37), a guide rod connected with the telescopic end of the clamping positioning cylinder II (37) penetrates through the fixed guide block II (36) to be fixedly connected with the clamping moving block (35), a side positioning pin (34) is arranged on the clamping moving block (35), a fixed guide block I (27) is arranged on a clamping supporting plate (20), a jacking column (26) is penetrated on the fixed guide block I (27), a clamping positioning cylinder I (28) is fixed on an outer side vertical plate of the fixed guide block I (27), and the telescopic end of the clamping positioning cylinder I (28) is connected with the jacking column (26).

8. The multi-station clamping and positioning device for welding an outer tubular column according to claim 2, wherein: the cooling device further comprises a cooling water tank (2), wherein the lower end of the cooling water tank (2) is fixed on the whole machine support frame (16), and an opening at the upper end of the cooling water tank (2) corresponds to the cooling station and the purging station.

9. The multi-station clamping and positioning device for welding an outer tubular column according to claim 8, wherein: be provided with on complete machine support frame (16) of blowing station top and blow mechanism, blow mechanism includes air pocket (14) and high pressure spray tube (13), through the pipe connection between air pocket (14) and high pressure spray tube (13), be provided with solenoid valve (15) on this pipeline, the lower surface of high pressure spray tube (13) is provided with the air nozzle, and this air nozzle corresponds with welding centre gripping frock (17) on the blowing station, and air pocket (14) are connected with outside air pump through the pipeline, and opening and shutting of solenoid valve (15) control high pressure spray tube (13).