CN114378587A

CN114378587A - Automatic production line for plate core of ultra-large flat plate collector

Info

Publication number: CN114378587A
Application number: CN202111678783.5A
Authority: CN
Inventors: 张亚明; 刘爱社; 薄生祥; 王芳
Original assignee: Solareast Holdings Co Ltd
Current assignee: Solareast Holdings Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-22
Anticipated expiration: 2041-12-31
Also published as: CN114378587B

Abstract

The invention relates to an automatic production line for plate cores of oversized flat plate collectors, which comprises a forming workbench and a pressure test workbench, wherein the forming workbench and the pressure test workbench are used for automatically feeding and welding pipe fittings, automatic welding machines are arranged at two ends of the forming workbench, an automatic feeding device and a forming plate core transfer device are arranged on the forming workbench between the two automatic welding machines, a forming plate core unloading device matched with the forming plate core transfer device is arranged on the pressure test workbench, and pressure test devices are arranged at two ends of the pressure test workbench; the invention automatically finishes the feeding and welding processes, completes a series of processes of transferring and unloading the formed plate core and pressure testing thereof in a matching way, solves the problem of deformation of the pipe in the discharging process due to slender and soft, has high discharging efficiency of the pipe, accurate positioning, sufficient fixation, accurate butt joint of welding seams, synchronous welding of two welding devices at two ends of the platform, good welding quality, high utilization rate of fuel gas, more convenient and efficient transfer of the formed plate core and pressure testing, water conservation, high cleanliness of the pipe body of the plate core and the like.

Description

Automatic production line for plate core of ultra-large flat plate collector

Technical Field

The invention relates to the field of production equipment of plate cores of oversized flat plate collectors, in particular to an automatic production line of plate cores of oversized flat plate collectors.

Background

In the heat utilization of solar energy, the solar heat collector plate core is a key part of various solar energy utilization devices. The flow channel of the solar heat collector plate core is divided into a main flow channel and branch flow channels, the main flow channel adopts a transverse thick copper pipe as a main pipe, and the branch flow channels utilize a plurality of slender copper pipes which are vertically arranged with the thick copper pipe;

the existing welding equipment welds along two sides of a copper pipe, so that two ends of a long and thin copper pipe are welded together with a thick copper pipe, the number of the long and thin copper pipes is large, one side of the long and thin copper pipe is welded with the thick copper pipe respectively, the other side of the long and thin copper pipe is welded with the thick copper pipe respectively, the use time is long, the production cost is high, the time and the labor are consumed in the hoisting and overturning process of the equipment, and the production efficiency is low.

After the solar collector plate core shaping, need shift out the shaping plate core from welding equipment, face long and thin copper pipe because soft and yielding problem equally, in case whole plate core warp in addition, hardly integrates, produces irreversible influence to the equipment in later stage, very big influence the yield.

The butt welding seam of the formed plate core needs to be subjected to comprehensive pressure test detection, the conventional detection method uses a hydrostatic test detection method commonly used in a pressure container, water needs to be fully filled in the pipeline of the whole formed plate core in the hydrostatic test process, the pipe diameter of a branch flow channel is small, the water flow resistance is large, the water filling time is long, and when water is discharged, the drainage treatment of a test field is not good, so that equipment and the plate core are soaked in sewage, the pollution of the formed plate core is caused, a large amount of manpower is needed to wipe the surface of a pipe body and the welding seam, and the working efficiency is extremely low.

Therefore, in order to solve the problems of deformation, large welding seam butting error, time and labor consumption in welding and more convenient and efficient transfer of a formed plate core and pressure test of parts during blanking, the automatic feeding and welding system for the plate core of the ultra-large flat plate collector is provided by combining the automatic feeding, automatic welding, automatic transfer of a finished product and automatic pressing technology of a welding seam.

Disclosure of Invention

The invention aims to provide an automatic production line for plate cores of oversized flat plate collectors, which solves the problems in the background art, avoids the defects of blanking deformation of a branch runner pipe body, large butt joint error of a branch runner pipe body and a main runner pipe body, time and labor consumption in welding, and has the advantages of more convenience and higher efficiency in transfer of a formed plate core and pressure test, cost saving and high automation degree.

In order to achieve the purpose, the invention provides the following technical scheme: an automatic production line for plate cores of ultra-large flat plate collectors comprises a forming workbench for automatic feeding and welding of pipe fittings, wherein a pressure test workbench for automatic pressure test of the formed plate cores is arranged on one side of the forming workbench side by side, and the heights of the pressure test workbench and the forming workbench are on the same horizontal plane; automatic welding machines are arranged at two ends of a forming workbench, an automatic feeding device and a forming plate core transfer device are arranged on the forming workbench between the two automatic welding machines, the forming plate core transfer device moves a forming plate core from the forming workbench to a pressure test workbench, a forming plate core unloading device matched with the forming plate core transfer device is arranged on the pressure test workbench, a plurality of pressure test positioning plates parallel to the width direction of the pressure test workbench are arranged on the pressure test workbench, and the pressure test devices are arranged at two ends of the pressure test workbench; the workstation is super large shaping workstation, guarantees that thin and long pipe fitting has sufficient blowing and subassembly butt joint space.

The automatic feeding device comprises a plurality of welding positioning plates arranged in parallel with the width direction of the forming workbench, one side of the forming workbench is provided with a discharging mechanism travelling along the direction of the welding positioning plates, the discharging mechanism comprises a material placing assembly, the material placing assembly is provided with a strip-shaped material placing plate, a plurality of material clamping devices are uniformly distributed on the material placing plate along the length direction, the forming workbench is provided with a driving mechanism for driving the material placing assembly to move along the direction of the positioning plates, a turning assembly for driving the material placing plate to turn is further arranged below the material placing plate, and after the pipe fittings are positioned and discharged through the automatic feeding device, an automatic welding process is carried out through butt welding seams of an automatic welding machine; through material clamping device and actuating mechanism and the cooperation of upset subassembly, the long and thin blowing of whole root thin of completion is regularly, accurate, guarantees that long and thin tubular product can not take place bending deformation at material loading and blowing in-process, and degree of automation is high, practices thrift manpower resources and time, and the blowing is efficient.

The shaping board core transfer device includes that the lift walking frame in shaping workstation welding position board one side is established to a plurality of, the lift walking frame is including the lifter plate that sets up from bottom to top, the fast board of one-level and the fast board of second grade, the height that goes up and down the walking frame in flexible initial position department is less than the welding position board height, the fast board of second grade height is higher than the welding position board and supports the shaping board core after rising, be equipped with the power component who drives the fast board of one-level and the fast board reciprocating motion of second grade on the lifter plate, power component drive the fast board of one-level and the fast board of second grade move to the pressure testing workstation, the pressure testing process is carried out on the shaping board core shifts the pressure testing workstation through shaping board core discharge apparatus. The movement of the lifting walking frame is utilized by the forming plate core transfer device, the transfer of the forming plate core transfer is solved, the forming plate core cannot deform and fall in the transfer process, and the smooth follow-up assembly is guaranteed.

Preferably, the first-stage speed plate is provided with a short supporting leg at one side close to the pressure test workbench, the second-stage speed plate is provided with a long supporting leg at one side close to the pressure test workbench, universal wheels are arranged below the short supporting leg and the long supporting leg, two lifting cylinders for driving the lifting plate to lift are arranged on the forming workbench right below the lifting plate, and after the first-stage speed plate and the second-stage speed plate are lifted by the lifting plate, the power assembly drives the first-stage speed plate and the second-stage speed plate to drive the forming plate core to move towards the pressure test workbench; the power component comprises a motor-driven folding chain arranged between a lifting plate and a second-level speed plate, the lower-layer end of the chain is fixedly connected with one side, close to the pressure test workbench, of the lifting plate, the upper-layer end of the chain is fixedly connected with one side, close to the pressure test workbench, of the second-level speed plate, the other end of the folding chain is provided with a chain pulley, and the chain pulley is connected with the end portion of the first-level speed plate. The primary speed plate moves slowly, the secondary speed plate moves quickly, when the secondary speed plate moves to the end position of the edge on the pressure test workbench, the primary speed plate just reaches the middle position of the pressure test workbench, the primary speed plate supported by the short supporting legs is supported below the secondary speed plate, the support is stable and reliable, and the secondary speed plate cannot fall.

More preferably, the material clamping device comprises an upper pressing plate and a lower pressing plate which are arranged up and down, one end of each of the upper pressing plate and the lower pressing plate is closed, the other end of each of the upper pressing plate and the lower pressing plate is provided with a discharging hole, a pipe placing space is formed between the upper pressing plate and the lower pressing plate, and a pipe fitting discharging pipe control mechanism is arranged at the discharging hole; the pipe fitting discharging pipe control mechanism comprises a first telescopic separation blade arranged on the lower pressing plate and a second telescopic separation blade arranged on the upper pressing plate, the first telescopic separation blade and the second telescopic separation blade are distributed in the pipe placing space in the front and back directions, and a pipe fitting placing cavity is formed between the first telescopic separation blade and the second telescopic separation blade; a first cylinder for driving the first telescopic separation blade to stretch is arranged below the lower pressing plate, and a second cylinder for driving the second telescopic separation blade to stretch is arranged above the upper pressing plate; the second telescopic separation blade is in an extending state in the process of shrinking the first telescopic separation blade, the pipe fitting in the placing cavity falls into the positioning plate, after the first telescopic separation blade is stretched out again, the second telescopic separation blade is shrunk, one pipe fitting in the pipe placing space falls into the placing cavity, then the second telescopic separation blade is stretched out, and the pipe placing operation is repeated; the independent chamber of placing guarantees to hold a pipe fitting at every turn, opens the back when first flexible separation blade, and only the key of placing in the chamber falls down, and other pipe fittings are put the pipe space by the flexible separation blade separation of second, put the flitch simultaneously along locating plate uniform motion, fall into the pipe fitting of placing in the chamber in proper order and by regularly accurate the locating plate that falls into, the blowing is high-efficient accurate.

Welding locating plate on the forming workbench and the pressure testing locating plate one-to-one on the pressure testing workstation become a sharp setting, and the both ends edge of a plurality of welding locating plate on each forming workbench and pressure testing locating plate all aligns the setting, and the pipe fitting that is equipped with a plurality of equidistant setting on every locating plate shelves the groove, and the groove one-to-one setting is shelved to the pipe fitting on a plurality of locating plate, and the pipe fitting shelve groove on the same axis constitutes the shelve space of placing whole pipe fitting, the every first separation blade of drive of first cylinder is regularly retracted once, and a pipe fitting just in time falls into just right pipe fitting and shelves the inslot. The pipe fitting placing groove is used for fixing the pipe fitting in the axial direction and the circumferential direction of the pipe fitting, and preparation work is prepared for accurate butt joint of the pipe fitting and the main pipe.

More preferably, the driving mechanism comprises three sliding rails which are arranged on the forming workbench and are arranged in parallel with the welding positioning plate, each sliding rail is provided with a sliding block in a matching way, the upper parts of the sliding blocks are provided with connecting blocks fixedly connected with the material placing plate, two sliding rails are respectively arranged at two ends of the material placing plate, and the other sliding rail is arranged in the middle of the material placing plate; a chain driven by a motor is arranged on a forming workbench on one side of the middle sliding rail of the material placing plate, and the chain is fixedly connected with a sliding block on the middle sliding rail; racks parallel to the sliding rails are arranged on the forming workbench on one side of the sliding rails at the two end portions, gears are meshed with the racks, a synchronizing shaft is arranged between the two gears, a bearing seat is arranged on the synchronizing shaft, and the bearing seat is fixedly connected with a connecting block on the corresponding sliding rail. The rack on one side of the sliding rails on the two end parts is provided with the rack of the meshing gear, the gear moves on the rack and ensures synchronous uniform motion with the chain, the phenomenon that the material placing plate deviates laterally or is in a clamping fault in the moving process is prevented, the material placing assembly can be kept to move synchronously and stably, the parallelism is ensured after the pipe fitting falls, and the pipe fitting just falls into the fixed position of the positioning plate.

More preferably, the upset subassembly is equipped with two sets ofly, establishes respectively at the both ends of putting the flitch, and the upset subassembly includes eccentric plate and upset cylinder, and the eccentric plate upside links to each other with putting the flitch bottom surface, and the eccentric plate lower part is equipped with the eccentric orfice, and the eccentric orfice is articulated with the push rod tip of upset cylinder, and the eccentric plate middle part is equipped with the dysmorphism hole that supplies the synchronizing shaft to pass, the upset cylinder afterbody passes through the backup pad and corresponds the slider on the slide rail fixed. The turnover assembly and the material placing plate move synchronously, when the pipe fitting is placed in the pipe placing space of the material clamping device, the turnover assembly drives the material placing plate to turn over, so that the material discharging opening inclines upwards or downwards, the loading and discharging actions of the pipe fitting are finished in a production line mode, and the device is efficient and high in automation degree.

More preferably, the automatic welding machine comprises a portal frame, a traveling device arranged along the length direction of the forming workbench is arranged below machine legs on two sides of the portal frame, the traveling device comprises a machine leg guide rail and a whole-circle belt pulley, the whole-circle belt pulley drives the machine legs to reciprocate on the machine leg guide rail, a plurality of main pipe support plates are uniformly distributed on the forming workbench below the portal frame, the main pipe support plates are arranged in a row, a pipe placing groove matched with a main pipe is formed in each main pipe support plate, a driving device and an electric wire drag chain are arranged on a cross beam of the portal frame, a welding device is arranged on the driving device, the driving device comprises a cross beam guide rail and a whole-circle chain wheel driven by a driving motor, the cross beam guide rail and the whole-circle chain wheel are arranged in parallel, a cross beam sliding block is arranged on the cross beam guide rail, and the cross beam sliding block is connected with the welding device;

the welding device comprises two welding guns which are opposite to two adjacent main pipe supporting plates, a vertically arranged servo cylinder is arranged above the welding guns, the two welding guns are fixed on a telescopic rod of the servo cylinder, each welding gun is connected with a mixed gas pipe, the mixed gas pipes are respectively connected with an oxygen supply pipeline and a gas pipeline, and flow regulating valves are arranged on the oxygen pipeline and the gas pipeline; every welder includes that two are a set of welding gun heads that the Y type set up, it is equipped with a welding wire head to correspond between a set of welding gun heads, the welding wire head upwards is connected with wire feeding mechanism, wire feeding mechanism includes the silk dish, silk dish one side is equipped with two sets of wire feeding wheels that set up in pairs, same set of wire feeding wheel is rotatory in opposite directions, the clearance that forms the welding wire and pass between the wire feeding wheel of same set, the welding wire output side of wire feeding wheel is equipped with two seal wires pipes, every seal wire pipe end links to each other with the welding wire head, the welding wire passes respectively seal wire pipe and wears out from the welding wire head in, seal wire pipe one side is equipped with the servo cylinder of level setting, two equidistant fixes on servo cylinder's telescopic link. Two welding sets at shaping workstation both ends weld simultaneously in step, and two welder on every welding set weld the butt weld of two pipe fittings and person in charge simultaneously, shorten the quarter during welding, and welding efficiency is high. The proportion of oxygen and fuel gas can be controlled at any time, the fuel gas is fully combusted, and the energy utilization rate is high. In the welding process, the welding wire moves to the tail part of the welding seam along the head part of the welding seam at a constant speed, the welding is complete and uniform, the welding seam is attractive, and the complete penetration is ensured.

More preferably, welding set one side is equipped with row cigarette storehouse and layering subassembly, and the storehouse top of discharging fume is equipped with the pipe of discharging fume, the layering subassembly is equipped with two, sets up along the crossbeam symmetry, and every layering subassembly all includes and is responsible for the complex layering, is equipped with the connecting strip of vertical setting on the layering, and the connecting strip is fixed continuous with telescopic cylinder. The layering is pressed in being responsible for both sides, prevents to shift in welding operation, causes the wrong position of welding, plays better positioning action.

More preferably, the pressure testing device is provided with two air supply pipes which are symmetrically arranged at two ends of the pressure testing workbench, the pressure testing device comprises a horizontally arranged air supply pipe, the front end of the air supply pipe is provided with an air supply joint which is matched and sealed with the plate core main pipe, and the air supply joint is provided with a conical end; the conical end head is matched with the main pipe of the plate core more tightly, and the air leakage phenomenon is avoided. The air feed pipe tail end passes through the air supply pipe and links to each other with outside air supply, is equipped with the manometer on the air supply pipe, is equipped with hierarchical cylinder on the air feed pipe, and hierarchical cylinder includes one-level cylinder and second grade cylinder, and one-level cylinder and second grade cylinder end to end link to each other in order, and the tight air feed of one-level cylinder top connects the tail end, all is equipped with air inlet and gas vent on one-level cylinder and the second grade cylinder, and the air inlet is connected with the air inlet pipeline, and the gas vent is connected with the exhaust pipe. The cooperation of the first-stage air cylinder and the second-stage air cylinder enables the air supply pipe not to move backwards due to the fact that air pressure in the plate core is backflushed, and the conical end and the plate core main pipe are in fit to generate a gap, so that air leakage is generated, and the air pressure test time is prolonged or the air pressure test fails.

More preferably, the formed plate core unloading device comprises main pipe clamping jaw devices arranged at two ends of the pressure test workbench and a branch pipe fixing device arranged in the middle of the pressure test workbench; be responsible for clamping jaw device includes the locating rack, is equipped with the transverse motion mechanism and the vertical motion mechanism that mutually perpendicular set up on the locating rack, and transverse motion mechanism includes horizontal cylinder, and the horizontal telescopic link tip of horizontal cylinder links to each other with vertical motion mechanism, and vertical motion mechanism includes vertical cylinder, and the vertical telescopic link tip below of vertical cylinder is equipped with clamping jaw assembly, clamping jaw assembly includes two first arc clamping jaws and the second arc clamping jaw that set up in opposite directions and indent, is equipped with the reciprocating cylinder of the motion of the first arc clamping jaw of drive between first arc clamping jaw and the second arc clamping jaw, and reciprocating cylinder level sets up, reciprocating cylinder's telescopic link tip and first arc clamping jaw fixed connection. In order to suspend the main pipes at the two ends of the formed plate core in a traction manner, the formed plate core unloading device smoothly returns to the initial position of the forming workbench, and on the other hand, the main pipes of the formed plate core are matched with the fixed plate core to be arranged on the pressure testing workbench, so that the formed plate core is prevented from being shifted due to vibration generated during pressure testing.

More preferably, the branch pipe fixing device comprises a horizontally arranged rotary arm beam, two vertically arranged cylinders are uniformly distributed on the rotary arm beam, the end parts of push rods of the two cylinders are connected with a horizontally arranged branch pipe clamping jaw assembly, the branch pipe clamping jaw assembly comprises a branch pipe containing plate, one side of the branch pipe containing plate is provided with a pushing cylinder and a limiting hook plate, the end part of a pushing rod of the pushing cylinder is connected with the end part of the limiting hook plate, the pushing cylinder drives the limiting hook plate to reciprocate along the branch pipe containing plate, the lower edge of the branch pipe containing plate is provided with a plurality of containing grooves which are arranged at equal intervals, the rotary arm beam rotates to be parallel to the pressure test positioning plate, the containing grooves are arranged corresponding to the pipe placing groove positions on the pressure test positioning plate one by one, the lower edge of the limiting hook plate is provided with a plurality of limiting hooks for plugging the containing grooves at equal intervals, the two ends of the limiting hook plate are provided with elliptical holes, guide studs are arranged on the branch pipe containing plate at positions corresponding to the elliptical holes, the guide stud moves along the long axis of the elliptical hole. The branch pipe fixing device is synchronously matched with the main pipe clamping jaw device at the middle position of the branch pipe of the forming plate core to lift the branch pipe.

More preferably, the vertical rotation axis that is equipped with of spiral arm roof beam one end, the cover is equipped with eccentric rotatory piece on the rotation axis, be equipped with the eccentric orfice on the eccentric rotatory piece, the spiral arm roof beam is located rotation axis one end and links to each other with eccentric rotatory piece, the spiral arm roof beam other end passes through the cable chain and links to each other with the universal ring on rotation axis top, eccentric rotatory piece below is equipped with the horizontal support beam parallel with the pressure testing workstation long limit, be equipped with the rotatory actuating cylinder that drives of drive spiral arm roof beam on the horizontal support beam, the eccentric orfice is articulated with the actuating lever that drives actuating cylinder. The eccentric rotating block is driven by the driving cylinder to rotate to drive the rotating arm beam to rotate forward or reversely along the rotating shaft, so that the formed plate core is efficiently transferred, and the welding quality and the shape of the plate core are not affected.

Before the automatic feeding device is started, the whole circle of belt pulley rotates forwards to drive the machine leg of the portal frame to move backwards on the machine leg guide rail, and the automatic welding machines at two ends of the forming workbench move towards opposite directions until the portal frame is positioned at the outer edge of the forming workbench. The portal frame avoids the space of the material placing component which reciprocates on the forming workbench along the direction of the welding positioning plate.

And then the two main pipes are respectively placed on the main pipe supporting plates on the corresponding sides, pipe holes butted with a plurality of pipe fittings are formed in the main pipes, and the main pipes are pushed to ensure that each pipe hole is positioned in the middle of the two adjacent main pipe supporting plates.

When the material placing plate is in the elevation angle state, the material placing plate is inclined to be inclined; the whole bundle of pipe fittings is lifted and placed on the plurality of lower pressing plates at one end of the discharging hole, the first pipe fitting falls into the innermost pipe placing space under the action of gravity, and other pipe fittings sequentially fall into the pipe placing space side by side to form a pipe fitting placing plane.

The pipe fitting discharging pipe control mechanism is arranged at the discharging opening, after the pipe fitting is arranged in the pipe placing space, the first air cylinder and the second air cylinder are started simultaneously, and the first telescopic separation blade are both in an extending state, so that the pipe placing space and the placing cavity are both in a material loading closed state.

The forming workbench is provided with a driving mechanism for driving the material placing assembly to move along the direction of the welding positioning plate, the middle slide rail of the material placing plate on the driving mechanism moves to drive the synchronous shaft to move forwards synchronously, the gear and the rack move in a meshing manner, the material placing assembly moves forwards and stably along the three slide rails integrally until the motor on the other side of the forming workbench stops working, the driving mechanism pauses, and the material placing plate is kept at the side position of the forming workbench in an elevation angle inclined state.

The turnover assembly and the material placing assembly move synchronously. When the material placing component is positioned at the other side position of the forming workbench, a discharging port on the material placing plate is in an elevation angle state; the upset cylinder starts, and the push rod is at the uniform velocity withdrawal, and the push rod tip drives eccentric orfice linear motion, turns into the rotational motion of eccentric slab to the drive is put the flitch and is turned over to the another side slope, and the upset cylinder starts stop work, and the push rod keeps the withdrawal state unchangeable, puts the drain hole on the flitch and is the angle of depression state.

The pipe fittings in the pipe placing space roll towards the second telescopic separation blade under the action of gravity. The second cylinder is started, the second telescopic catch contracts, the pipe fitting closest to the second telescopic catch falls into the placing cavity, the second telescopic catch extends out, meanwhile, the motor is started to rotate reversely to drive the chain to move reversely, the chain drives the sliding block connected with the chain to do return motion on the middle sliding rail, the sliding block and the connecting block move synchronously, the middle sliding rail drives the synchronizing shaft to move synchronously forwards, meanwhile, the gear and the rack are meshed to move, the material placing assembly moves reversely along the three sliding rails at a constant speed, when the material placing assembly moves to be close to the position above the first pipe fitting placing groove on the positioning plate, the second cylinder is started to contract the second telescopic catch, the pipe fitting in the placing cavity falls into the first pipe fitting placing groove on the positioning plate, the first telescopic catch is in an extending state in the contraction process of the second telescopic catch, the pipe fitting in the placing cavity falls into the positioning plate, and the second telescopic catch extends out again, the first telescopic separation blade is contracted, one of the pipe fittings in the pipe placing space falls into the placing cavity, then the first telescopic separation blade extends out, and the pipe placing operation is repeated. The driving mechanism drives the material placing assembly to move at a constant speed along the positioning plate, when the upper portion of the pipe fitting placing groove is reached, the first cylinder is started, the first telescopic separation blade is driven to contract, the pipe fitting placed in the cavity falls into the next pipe fitting placing groove on the welding positioning plate, the pipe fitting placed in the groove on the positioning plate falls into the pipe fitting, the driving mechanism stops moving, the material placing assembly returns to the initial position, the pipe fitting placing is completed, each pipe fitting is uniformly supported in the whole length direction, and the straight line state is kept. The pipe fittings in each pipe fitting placement groove that falls into on the locating plate, every pipe fitting both ends are respectively with the pore pair of being responsible for on the corresponding side and place, treat the welding.

Before the welding starts, all the pipe fittings are ensured to be in butt joint with the pipe holes in the main pipe on the corresponding side again, and when the portal frame drives the welding device to move to the upper part of the main pipe, the welding device adjusts the position until the two groups of welding gun heads and the corresponding welding wire heads are just opposite to the welding line of the main pipe below. The layering is just to being responsible for the position, and the connecting strip links to each other with telescopic cylinder is fixed, and telescopic cylinder starts, and the drive connecting strip moves down, is being responsible for on two layering are pressed simultaneously, is responsible for and is fixed in axial and circumference.

When welding starts, the flow regulating valve is regulated, the proportion of oxygen and fuel gas is regulated, when gas is released in the welding gun heads, an external fire source is used for simultaneously igniting each group of welding gun heads, welding wires extending out of the welding wire heads are melted by flame of the welding gun heads at high temperature, the welding wires are dripped on pipe hole welding seams of a main pipe after being melted, the servo cylinders which are vertically arranged and the servo cylinders which are horizontally arranged are simultaneously started, the welding wire heads move at a constant speed along the length direction of the welding seams, and welding wire melt flows into gaps below the pipe body from two ends above the pipe body and is welded by the residual heat of the welding wire melt. Meanwhile, a group of welding gun heads intermittently move up and down in the vertical direction by taking the welding wire head as a midpoint to continuously heat the welding wire, the welding wire is always in a preheating and melting state, the welding is continuous, and after the welding is finished, the horizontally arranged servo cylinder retracts, and the welding wire head returns to the initial welding position.

When two adjacent groups of welding seams are welded, the whole circle of chain wheels driven by the driving motor moves, the chain wheels drive the beam sliding blocks to move on the beam guide rails, when the welding device moves to the position above the next adjacent group of welding seams, the driving motor stops moving, welding wires extending out of the welding wire heads are melted by flame of the welding gun heads at high temperature, the welding wires are dripped on pipe hole welding seams of the main pipe after being melted, the welding wire heads move at a constant speed along the length direction of the welding seams, welding wire molten liquid flows into gaps below the pipe body from two ends above the pipe body, and the gaps are welded by means of residual heat of the welding wire molten liquid. Meanwhile, a group of welding gun heads intermittently move up and down in the vertical direction by taking the welding wire head as a midpoint, the welding wire is continuously heated, the welding wire is always in a preheating and melting state, and the welding is continuous. After welding, the horizontally arranged servo cylinder retracts, the welding wire head returns to the welding initial position, and smoke generated in the welding process is collected by the smoke exhaust bin and then is exhausted by the smoke exhaust pipe.

And the steps are circulated for a plurality of times until all welding seams between the pipe holes of the main pipe and the pipe fittings are welded, the flow regulating valve is closed, flame is extinguished, the wire feeding mechanism and the welding device stop working, and the heat collecting plate core is welded and formed. And lifting the pressing strip assembly, and transferring the heat collecting plate core to enter a molding plate core transferring process.

After the forming plate core is welded, a main pipe of the forming plate core is supported in a pipe placing groove in a main pipe supporting plate, and each row of branch flow channel pipe fittings are supported in a pipe fitting placing groove in a corresponding forming workbench.

Two lifting cylinders for driving the lifting plate to lift are arranged on the forming workbench right below the lifting plate, and after the primary speed plate and the secondary speed plate are lifted by the lifting plate, the height of the lifted secondary speed plate is higher than that of the welding positioning plate and supports the forming plate core; the motor starts to drive the folding chain to move towards the direction of the pressure test workbench, the other end of the folding chain is provided with a chain pulley, and the chain pulley is connected with the end part of the primary speed plate. The speed of the first-stage speed plate is half of the speed of the second-stage speed plate, and the displacement of the first-stage speed plate is half of that of the second-stage speed plate in the same time. When the secondary speed plate moves to one side of the end point of the pressure test workbench, the primary speed plate is at the middle position of the pressure test workbench, the short support leg of the primary speed plate is supported at the middle position of the secondary speed plate, and meanwhile, the forming plate core on the secondary speed plate is completely transferred above the pressure test workbench. And transferring the plate core to be formed to a pressure test workbench through a forming plate core unloading device to perform a pressure test procedure.

The primary cylinder drives the air supply pipe to move towards the opening direction of the main pipe, and the tapered end of the air supply joint props against the opening end of the main pipe to ensure complete sealing; and an external gas source starts to supply gas along the gas supply pipe, the gas is simultaneously filled into the pipe body of the forming plate core from the main pipes at the two ends of the forming plate core, and the gas supply is stopped until the forming plate core is full of the gas. And the air inlet pipeline of the secondary cylinder starts to admit air, and provides a thrust for the primary cylinder, so that the position of the primary cylinder is kept still. And (5) observing the display value of a pressure gauge on the air supply pipe, keeping for 15min, keeping the pressure unchanged, and enabling the welding seam to reach the standard. The first-stage cylinder and the second-stage cylinder exhaust along the exhaust pipeline, the tapered end of the air supply connector is separated from the open end of the main pipe, and the pressure test procedure is completed.

Compared with the prior art, the invention has the beneficial effects that: after the feeding and welding processes are automatically completed, a series of processes of transferring, unloading and pressure testing of the formed plate core are completed in a matched mode, the problem that the pipe fitting deforms due to being slender and soft in the discharging process is solved, the pipe fitting discharging efficiency is high, the positioning is accurate, the fixing is sufficient, the butt joint of welding seams is accurate, two welding devices at two ends of the platform can synchronously weld at the same time, the welding quality is good, the gas utilization rate is high, the formed plate core transferring and pressure testing are more convenient and efficient, water is saved, and the cleanliness of a pipe body of the plate core is high.

Drawings

FIG. 1 is a schematic view of the overall assembly of the present invention;

FIG. 2 is a schematic view of the overall assembly of the forming table of the present invention;

FIG. 3 is a side view of the forming station of the present invention;

FIG. 4 is a schematic view of a master pipe gripper apparatus of the present invention;

FIG. 5 is a front view of the formed core transfer apparatus of the present invention;

FIG. 6 is a schematic view of a welding apparatus of the present invention;

FIG. 7 is a schematic view of the turning apparatus of the present invention;

FIG. 8 is a schematic view of a driving device according to the present invention;

FIG. 9 is a side view of a pressure testing platform of the present invention;

figure 10 is a schematic view of a branch clamp assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-3, an automatic production line for plate cores of ultra-large flat plate collectors comprises a forming workbench 1 for automatic feeding and welding of pipe fittings, a pressure test workbench 5 for automatic pressure test of the forming plate cores is arranged on one side of the forming workbench 1 side by side, and the heights of the pressure test workbench 5 and the forming workbench 1 are on the same horizontal plane; automatic welding machines 3 are arranged at two ends of the forming workbench 1, and an automatic feeding device 2 and a forming plate core transfer device 8 are arranged on the forming workbench between the two automatic welding machines 3. The forming plate core transfer device 8 moves the forming plate core from the forming workbench 1 to the pressure test workbench 5, a forming plate core unloading device matched with the forming plate core transfer device 8 is arranged on the pressure test workbench 5, a plurality of pressure test positioning plates 501 parallel to the width direction of the pressure test workbench are arranged on the pressure test workbench, and pressure test devices 7 are arranged at two ends of the pressure test workbench;

the automatic feeding device 2 comprises a plurality of welding positioning plates 101 which are arranged in parallel with the width direction of the forming workbench 1, the welding positioning plates 101 on the forming workbench 1 and the pressure test positioning plates on the pressure test workbench 5 are arranged in a straight line in a one-to-one correspondence mode, the edges of the two ends of the welding positioning plates 101 and the pressure test positioning plates 501 on each forming workbench 1 are arranged in an aligned mode, a plurality of pipe placing grooves 111 which are arranged at equal intervals are formed in each positioning plate, the pipe placing grooves on the plurality of positioning plates are arranged in a one-to-one correspondence mode, the pipe placing grooves on the same axis form a placing space for placing a whole pipe, each time the first cylinder drives the first separation blade to retract at regular time, and one pipe just falls into the opposite pipe placing groove; the pipe is uniformly supported over its entire length, maintaining a straight line.

One side of the forming workbench is provided with a discharging mechanism which runs along the direction of the welding positioning plate, the discharging mechanism comprises a material placing assembly, the material placing assembly is provided with a strip-shaped material placing plate 202, and the length of the material placing plate 202 is slightly smaller than the total length of the forming workbench. A plurality of material clamping devices 203 are uniformly distributed on the material placing plate 202 along the length direction, each material clamping device 203 comprises an upper pressing plate 231 and a lower pressing plate 237 which are arranged up and down, one end of each of the upper pressing plate 231 and the lower pressing plate 237 is closed, the other end of each of the upper pressing plate 231 and the lower pressing plate 237 is provided with a material discharging port, a pipe placing space 232 is formed between the upper pressing plate 231 and the lower pressing plate 237, the pipe placing space 232 is a space capable of containing a row of pipe fittings, the lower pressing plate 237 is slightly longer than the upper pressing plate 231, the material placing plate is turned over firstly, and the material discharging ports are guaranteed to be in an elevation angle state; the whole bundle of pipe fittings is lifted at the extending positions of the plurality of lower pressing plates at one end of the discharging hole, the first pipe fitting falls into the innermost pipe placing space under the action of gravity, and other pipe fittings sequentially fall into the pipe placing space side by side to form a pipe fitting placing plane.

A pipe discharging control mechanism for the pipe fittings is arranged at the discharging opening; the pipe fitting discharging pipe control mechanism comprises a first telescopic blocking piece 236 arranged on the lower pressing plate and a second telescopic blocking piece 234 arranged on the upper pressing plate, the first telescopic blocking piece 236 and the second telescopic blocking piece 234 are distributed in the pipe placing space in a front-back mode, and a pipe fitting placing cavity 235 is formed between the first telescopic blocking piece 236 and the second telescopic blocking piece 234; a first cylinder 233 for driving the first telescopic separation blade to stretch is arranged below the lower pressing plate, and a second cylinder 238 for driving the second telescopic separation blade to stretch is arranged above the upper pressing plate; after the pipe fitting is filled in the pipe placing space, the first air cylinder 233 and the second air cylinder 238 are started simultaneously, and the first telescopic baffle plate 236 are both in an extending state, so that the pipe placing space and the placing cavity are both in a material loading closed state. The second telescopic separation blade is in an extending state in the process of shrinking the first telescopic separation blade, the pipe fitting in the placing cavity falls into the welding positioning plate, after the first telescopic separation blade is stretched out again, the second telescopic separation blade is shrunk, one pipe fitting in the pipe placing space falls into the placing cavity, then the second telescopic separation blade is stretched out, and the pipe placing operation is repeated;

referring to fig. 8, a driving mechanism for driving the material placing assembly to move along the direction of the welding positioning plate is arranged on the forming workbench, the driving mechanism 204 includes three slide rails arranged on the forming workbench 1 and parallel to the welding positioning plate 101, each slide rail is provided with a slide block 241 in a matching manner, the upper portion of the slide block 241 is provided with a connecting block fixedly connected with the material placing plate 202, two slide rails are respectively arranged at two ends of the material placing plate 202, and the other slide rail is arranged in the middle of the material placing plate; a chain 241 driven by a motor is arranged on a forming workbench on one side of the middle sliding rail of the material placing plate, and the chain is fixedly connected with a sliding block on the middle sliding rail; the motor starts to drive the chain to move, the chain drives the sliding block connected with the chain to move on the middle sliding rail, and the sliding block and the connecting block move synchronously.

The two end parts of the slide rail side forming workbench 1 are respectively provided with a rack 211 parallel to the slide rail, the racks 211 are engaged with gears 212, a synchronizing shaft 221 is arranged between the two gears 212, the synchronizing shaft 221 is provided with a bearing seat 222, and the bearing seats 222 are fixedly connected with the connecting blocks on the corresponding slide rails. The synchronous shaft 221 progressively moves to give the sliding rails at the two end parts of the material placing plate 202, the sliding rails in the middle move to drive the synchronous shaft 221 to synchronously move forwards, meanwhile, the gear 212 and the rack 211 are meshed to move, the material placing assembly integrally moves forwards and stably along the three sliding rails until the motor on the other side of the forming workbench stops working, the driving mechanism 204 stops working, and the material placing plate 202 is kept at the side position of the forming workbench in an elevation angle inclined state.

Referring to fig. 7, two turning assemblies 205 for driving the material placing plate to turn over are further disposed below the material placing plate 202, the turning assemblies 205 are disposed at two ends of the material placing plate 202, each turning assembly includes an eccentric plate 253 and a turning cylinder 255, an upper side of the eccentric plate 253 is connected to a bottom surface of the material placing plate 202, an eccentric hole 252 is disposed at a lower portion of the eccentric plate, the eccentric hole 252 is hinged to an end portion of a push rod of the turning cylinder 255, a special-shaped hole 256 for a synchronizing shaft to pass through is disposed in a middle portion of the eccentric plate 253, and a tail portion of the turning cylinder 255 is fixed to a slide block on a corresponding slide rail through a support plate. The turnover assembly and the material placing assembly move synchronously. When the material placing component is positioned at the other side position of the forming workbench, a discharging port on the material placing plate is in an elevation angle state; the upset cylinder starts, and the push rod is at the uniform velocity withdrawal, and the push rod tip drives eccentric orfice linear motion, turns into the rotational motion of eccentric slab to the drive is put the flitch and is turned over to the another side slope, and the upset cylinder starts stop work, and the push rod keeps the withdrawal state unchangeable, puts the drain hole on the flitch and is the angle of depression state.

The pipe fittings in the pipe placing space 232 roll towards the second telescopic blocking piece 234 under the action of gravity. The second cylinder 238 is started, the second retractable catch 234 is retracted, the pipe closest to the second retractable catch 234 falls into the placing cavity 235, the second retractable catch 234 extends, meanwhile, the motor is started to rotate reversely, the driving chain 241 moves reversely, the chain 241 drives the slider connected with the chain 241 to move back on the middle slide rail, the slider 241 and the connecting block move synchronously, the middle slide rail moves to drive the synchronizing shaft 221 to move forwards synchronously, the gear 212 and the rack 211 move in a meshing manner, the material placing assembly moves at a constant speed along the three slide rails reversely, when the material placing assembly moves to a position close to the position above the first pipe placing groove on the positioning plate, the second cylinder 238 is started to retract the second retractable catch 234, the pipe in the placing cavity 235 falls into the first pipe placing groove 111 on the welding positioning plate 101, and the first retractable catch 236 is in an extending state during the retraction of the second retractable catch 234, the pipe fitting in the placing cavity 235 falls into the positioning plate, after the second telescopic blocking piece 234 extends out again, the first telescopic blocking piece 236 contracts, one of the pipe fitting in the pipe placing space 232 falls into the placing cavity, then the first telescopic blocking piece 236 extends out, and the pipe placing operation is repeated. The actuating mechanism drives the material placing assembly to move at a constant speed along the welding positioning plate 101, when the upper portion of the pipe fitting placing groove is reached, the first cylinder is started to drive the first telescopic separation blade to contract, the pipe fitting placed in the cavity falls into the next pipe fitting placing groove on the positioning plate, and the pipe fitting placed in the groove on the welding positioning plate falls into the pipe fitting, the actuating mechanism stops moving, the material placing assembly returns to the initial position, and the pipe fitting placing is completed.

After the pipe fittings are positioned and discharged through the automatic feeding device, an automatic welding process is carried out on butt welding seams through an automatic welding machine; referring to fig. 6, the automatic welding machine 3 includes a gantry 307, a traveling device disposed along the length direction of the forming table is disposed below the machine legs on two sides of the gantry 307, the traveling device includes a machine leg guide rail 304 and a full-circle belt pulley 305, the full-circle belt pulley 305 drives the machine legs to reciprocate on the machine leg guide rail 304, before the pipe discharging procedure, the full-circle belt pulley 305 rotates forward to drive the gantry machine legs 303 to move backward on the machine leg guide rail 304, and the automatic welding machines 3 on two ends of the forming table 1 move in opposite directions until the gantry 307 is located at the outer edge of the forming table. The gantry 307 avoids the space where the material placing component reciprocates on the forming workbench along the direction of the positioning plate.

The equipartition is equipped with a plurality of on the forming table of portal frame 307 below and is responsible for backup pad 306, it sets up to be one row to be responsible for backup pad 306, be responsible for and be equipped with on the backup pad 306 and be responsible for the complex and put the pipe socket, be responsible for two and place respectively in the person in charge backup pad that corresponds the side, be responsible for and offer the tube hole with the butt joint of a plurality of pipe fitting, promote to be responsible for and guarantee that every tube hole is located two adjacent person in charge backup pad intermediate positions, the tube hole is just to each pipe fitting of arranging pipe fitting rest inslot this moment, the butt joint of the tube hole on the person in charge of each pipe fitting both ends respectively with the corresponding side is placed, treat the welding.

Be equipped with drive arrangement 308 and electric wire tow chain on the crossbeam of portal frame, be equipped with welding set 9 on the drive arrangement 308, welding set 9 one side is equipped with exhaust smoke bin 301 and layering subassembly 302, and the storehouse 301 top of discharging smoke is equipped with smoke exhaust pipe 311. The flue gas that produces during the welding is discharged by the pipe after being collected by discharge fume bin 301.

The layering subassembly 302 is equipped with two, sets up along the crossbeam symmetry, and every layering subassembly all includes and is responsible for the complex layering, is equipped with the connecting strip of vertical setting on the layering, and the connecting strip is fixed with telescopic cylinder 321 and links to each other. The pressing strip and the connecting strip are arranged in a cross shape. The length direction of the pressing strips is parallel to the axial direction of the main pipe, the contact stress lines are long, all pipe fittings are enabled to be in butt joint with the pipe holes in the main pipe on the corresponding side before welding is started, when the portal frame drives the welding device to move to the position above the main pipe, the pressing strips are opposite to the position of the main pipe, the connecting strips are fixedly connected with the telescopic air cylinder 321, the telescopic air cylinder 321 is started, the connecting strips are driven to move downwards, the two pressing strips are pressed on the main pipe simultaneously, and the main pipe is fixed in the axial direction and the circumferential direction.

The welding device comprises two welding guns 902 opposite to two adjacent main pipe supporting plates, a vertically arranged servo cylinder 908 is arranged above the welding guns 902, the two welding guns 902 are both fixed on a telescopic rod of the servo cylinder 908, each welding gun 902 is connected with a mixed gas pipe, the mixed gas pipes are respectively connected with an oxygen supply pipeline and a gas pipeline, and flow regulating valves are arranged on the oxygen pipeline and the gas pipeline; and adjusting the welding device until the two groups of welding gun heads and the corresponding welding wire heads are just opposite to the welding line of the main pipe below. Every welder includes that two are a set of welding gun head 903 that the Y type set up, correspond between a set of welding gun head 903 and be equipped with a welding wire head 904, welding wire head 904 upwards is connected with wire feeding mechanism, wire feeding mechanism includes wire reel 901, wire reel 901 one side is equipped with two sets of wire feeding wheels that set up in pairs, same set of wire feeding wheel is rotatory in opposite directions, the clearance that forms the welding wire and pass between the same set of wire feeding wheel, the welding wire output side of wire feeding wheel is equipped with two wire guides, every wire guide is terminal to link to each other with the welding wire head, the welding wire passes wire guide respectively and wears out in the welding wire head, wire guide one side is equipped with the servo cylinder that the level set up, two equidistant fixes on servo cylinder's telescopic link of wire guide.

When welding starts, the flow regulating valve is regulated, the proportion of oxygen and fuel gas is regulated, when gas is released in the welding gun head 903, an external fire source is used for simultaneously igniting all the assembly welding gun heads, welding wires extending out of the welding wire heads are melted by the flame of the welding gun head 903 at high temperature, the welding wires are dripped on the pipe hole welding seams of the main pipe after being melted, the servo cylinder which is vertically arranged and the servo cylinder 908 which is horizontally arranged are simultaneously started, the welding wire heads 904 move at a constant speed along the length direction of the welding seams, welding wire melt flows into the gaps below the pipe body from the two ends above the pipe body, and the gaps are welded by means of the residual heat of the welding wire melt. Meanwhile, a group of welding gun heads intermittently move up and down in the vertical direction by taking the welding wire head as a midpoint to continuously heat the welding wire, the welding wire is always in a preheating and melting state, the welding is continuous, and after the welding is finished, the horizontally arranged servo cylinder retracts, and the welding wire head returns to the initial welding position.

The driving device 308 comprises a beam guide rail 309 and a full circle chain wheel driven by a driving motor, the beam guide rail 309 is arranged in parallel with the full circle chain wheel, a beam sliding block 310 is arranged on the beam guide rail 309, and the beam sliding block 310 is connected with the welding device 9; when two adjacent groups of welding seams are welded, the whole-circle chain wheel driven by the driving motor 308 moves, the whole-circle chain wheel drives the beam sliding block 310 to move on the beam guide rail 309, when the welding device 9 moves to the position above the next adjacent group of welding seams, the driving motor stops moving, the flame of the welding gun head melts the welding wire extending out of the welding wire head at high temperature, the welding wire drops on the pipe hole welding seam of the main pipe after being melted, the welding wire head moves at a constant speed along the length direction of the welding seam, the welding wire melt flows into the seam below the pipe body from the two ends above the pipe body, and the seam is welded by the residual heat of the welding wire melt. Meanwhile, a group of welding gun heads intermittently move up and down in the vertical direction by taking the welding wire head as a midpoint, the welding wire is continuously heated, the welding wire is always in a preheating and melting state, and the welding is continuous. After welding, the horizontally arranged servo cylinder retracts, and the welding wire head returns to the initial welding position.

Referring to fig. 5, the forming board core transferring device 8 includes a plurality of lifting frames 8 disposed at one side of the forming workbench welding positioning plate 101, a lifting frame parallel to the welding positioning plate is disposed between every two welding positioning plates, the lifting frame includes a lifting plate 802, a first-stage speed plate 805 and a second-stage speed plate 806 disposed from bottom to top, the height that highly is less than the welding locating plate height of frame goes up and down in flexible initial position department, the fast board of first grade is equipped with short landing leg 851 in one side that is close to the pressure testing workstation, and the fast board of second grade is equipped with long landing leg 861 in one side that is close to the pressure testing workstation, and short landing leg and long landing leg below all are equipped with the universal wheel, are equipped with two lift cylinders 801 that drive the lifter plate and go up and down on the shaping workstation under lifter plate 802, and the fast board 805 of one-level and the fast board 806 of second grade are by the lifter plate lifting back, and the fast board height of second grade is higher than welding locating plate 101 and support the shaping board core after raising.

A power component for driving the first-stage speed plate 805 and the second-stage speed plate 806 to reciprocate is arranged on the lifting plate of the molding plate core, and the power component drives the first-stage speed plate and the second-stage speed plate to drive the molding plate core to move towards the pressure test workbench; the power component comprises a motor-driven folding chain 804 arranged between a lifting plate and a second-level speed plate, the lower end of the folding chain 804 is fixedly connected with one side of the lifting plate close to a pressure test workbench, the upper end of the folding chain is fixedly connected with one side of the second-level speed plate 806 close to the pressure test workbench, the motor is started to drive the folding chain to move towards the pressure test workbench, the other end of the folding chain is provided with a chain pulley 803, and the chain pulley 803 is connected with the end of the first-level speed plate 805. The speed of the primary speed plate 805 is half of the speed of the secondary speed plate 806, and the displacement of the primary speed plate 805 is half of the displacement of the secondary speed plate 806 in the same time. When the secondary speed plate moves to one side of the end point of the pressure test workbench, the primary speed plate 805 is at the middle position of the pressure test workbench, the short support leg of the primary speed plate 805 is supported at the middle position of the secondary speed plate 806, and meanwhile, the forming plate core on the secondary speed plate 806 is completely transferred above the pressure test workbench. And transferring the plate core to be formed to a pressure test workbench through a forming plate core unloading device to perform a pressure test procedure.

The formed plate core unloading device comprises a main pipe clamping jaw device 4 arranged at two ends of the pressure test workbench and a branch pipe fixing device 6 arranged in the middle of the pressure test workbench; the main pipe clamping jaw device 4 clamps the main pipe at two ends of the formed plate core, and meanwhile, after the branch pipe fixing devices 6 grab a plurality of branch flow channel pipe fittings of the formed plate core from the middle positions of the pipe fittings, the lifting walking frame does return motion from the pressure test workbench 5 to the forming workbench 1.

Referring to fig. 4, the main pipe clamping jaw device 4 includes a positioning frame 401, a transverse moving mechanism and a vertical moving mechanism are disposed on the positioning frame 401, the transverse moving mechanism includes a horizontal cylinder 406, an end portion of a transverse telescopic rod of the horizontal cylinder 406 is connected to the vertical moving mechanism, when the formed board core transfer device moves to the pressure testing workbench, the transverse telescopic rod of the horizontal cylinder 406 contracts to drive the vertical moving mechanism to move away from the pressure testing workbench until the formed board core smoothly enters the pressure testing workbench to prepare a sufficient placing space, and the transverse telescopic rod of the horizontal cylinder stops contracting.

The vertical movement mechanism comprises a vertical cylinder 405, a clamping jaw assembly 402 is arranged below the end part of a vertical telescopic rod of the vertical cylinder 405, and the end part of the vertical telescopic rod of the vertical cylinder starts to contract and move to the highest position so as to prepare an enough placing space for a formed plate core to smoothly enter a pressure test workbench. When the formed plate core completely enters the pressure test workbench, the transverse telescopic rod of the horizontal cylinder stretches out to drive the vertical movement mechanism to move towards the direction close to the pressure test workbench, and when the clamping jaw assembly 402 moves to be just above the main pipe of the formed plate core, the transverse telescopic rod stops stretching out; the vertical telescopic rod of the vertical cylinder 405 starts to do stretching movement, and when the main pipe of the molding board core completely enters the clamping jaw assembly 402, the vertical telescopic rod of the vertical cylinder 405 stops stretching movement.

Clamping jaw assembly 402 includes two first arc clamping jaw 421 and second arc clamping jaw 422 that set up in opposite directions and indent, when shaping board core is responsible for and is close to second arc clamping jaw 422 inboard, be equipped with the reciprocating cylinder 423 of the first arc clamping jaw 421 motion of drive between first arc clamping jaw 421 and the second arc clamping jaw 422, reciprocating cylinder 423 level sets up, reciprocating cylinder 423's telescopic link tip and first arc clamping jaw 421 fixed connection, servo cylinder 423 starts, the telescopic link drive first arc clamping jaw 421 of drive servo cylinder 423 removes to second arc clamp 1 direction, until first arc clamping jaw 421 and the cooperation of second arc clamp 1 with the shaping board core be responsible for the centre gripping after firm, servo cylinder 423 stops work, the person in charge at shaping board core both ends all is in same level by the clamping jaw assembly centre gripping of same height.

The main pipe clamping jaw device 4 automatically finishes clamping a main pipe of a formed plate core, and simultaneously, the branch pipe fixing device synchronously finishes clamping and fixing all branch flow channel pipe fittings of the formed plate core, the branch pipe fixing device comprises a horizontally arranged rotating arm beam 602, one end of the rotating arm beam 602 is vertically provided with a rotating shaft 605, an eccentric rotating block 606 is sleeved on the rotating shaft 605, an eccentric hole is arranged on the eccentric rotating block 606, the rotating arm beam 602 is positioned at one end of the rotating shaft and connected with the eccentric rotating block 606, and the other end of the rotating arm beam 602 is connected with a universal ring at the top end of the rotating shaft 605 through a cable chain 604; a horizontal supporting beam 608 parallel to the long side of the pressure test workbench is arranged below the eccentric rotating block 606, a driving cylinder 607 for driving the spiral arm beam to rotate is arranged on the horizontal supporting beam 608, and the eccentric hole is hinged with a driving rod of the driving cylinder. Before the formed core is completely transferred over the pressure testing table, the swing arm beams 602 remain parallel to the horizontal support beams 608, providing sufficient movement space for the formed core to be completely transferred over the pressure testing table. After the forming plate core is completely transferred to the upper part of the pressure test workbench, the driving cylinder is started, the driving rod of the driving cylinder extends out to drive the eccentric rotating block to rotate along the rotating shaft, the swing arm beam 602 at the other end of the eccentric rotating block 606 rotates along the same direction until the swing arm beam 602 and the horizontal supporting beam 608 form a vertical angle, and at the moment, the swing arm beam 602 is parallel to the pressure test positioning plate 501.

Referring to fig. 10, two vertically arranged cylinders 1 are uniformly distributed on a rotating arm beam 602, the end of a push rod of each cylinder is connected with a horizontally arranged branch pipe clamping jaw assembly, the branch pipe clamping jaw assembly comprises a branch pipe receiving plate 615, a pushing cylinder 616 and a limiting hook plate 613 are arranged on one side of the branch pipe receiving plate 615, the end of a pushing rod of the pushing cylinder 616 is connected with the end of the limiting hook plate 613, the pushing cylinder 616 drives the limiting hook plate 613 to reciprocate along the branch pipe receiving plate, a plurality of receiving grooves 611 which are arranged at equal intervals are arranged on the lower edge of the branch pipe receiving plate 615, the rotating arm beam rotates to be parallel to a pressure test positioning plate, the receiving grooves and the pipe placing groove positions on the pressure test positioning plate are arranged in one-to-one correspondence, the pushing rod of the pushing cylinder extends, a plurality of limiting hooks for plugging the receiving grooves are arranged at equal intervals on the lower edge of the limiting hook plate, elliptical holes are arranged at two ends of the limiting hook plate, guide studs are arranged on the branch pipe receiving plate corresponding to the elliptical holes, the guide stud moves along the long axis of the elliptical hole. The propelling movement pole of propelling movement cylinder drives spacing hook plate and accomodates the board along the branch pipe and move to the free end direction of spiral arm roof beam, and the guiding stud moves along the elliptical aperture major axis, then the spacing pothook 612 of shutoff storage groove removes to accomodate the groove on one side, and the propelling movement pole stop motion of propelling movement cylinder 616. The push rods of the two cylinders on the rotary arm beam 602 move downwards simultaneously, all the branch flow channel pipe fittings of the molding plate core enter the accommodating grooves of the branch pipe accommodating plates 615 one by one respectively, the push rods of the push cylinders 616 contract, the limiting hook plates 613 move reversely along the branch pipe accommodating plates 615 until the limiting hooks 612 block the corresponding accommodating grooves 611 respectively, and the push cylinders 616 stop working; the formed plate core forming plate core unloading device is fixed above the pressure test workbench.

The folding chain 804 driven by the motor in the power assembly of the forming plate core transfer device reversely moves towards the forming workbench, the speed of the first-stage speed plate 805 is half of the speed of the second-stage speed plate 806, and the displacement of the first-stage speed plate 805 is half of the movement displacement of the second-stage speed plate 806 in the same time. The primary speed plate 805 and the secondary speed plate 806 reach the initial position on the forming table at the same time, and the lifting cylinder 801 drives the lifting plate 802 to descend to the initial height.

After the forming plate core transfer device is completely separated from the pressure test workbench, a pushing rod of a pushing cylinder drives a limiting hook plate to move downwards, meanwhile, a vertical cylinder 405 in a vertical movement mechanism moves downwards along a vertical telescopic rod to drive a clamping jaw assembly 402 and the limiting hook plate 613 to synchronously move downwards until main pipes at two ends of the forming plate core are placed on support plates at two ends of the pressure test workbench, grooves matched with the outer wall of a pipe body are formed in the support plates, branch flow channel pipes of the forming plate core are placed in a pipe placing groove 111 on a pressure test positioning plate, and the pushing rod of the pushing cylinder drives the limiting hook plate to move upwards to separate from the forming plate core branch flow channel pipes;

the pushing rod of the pushing cylinder 616 drives the limit hook plate 613 to move towards the free end of the radial beam 602 along the branch pipe containing plate, the guide stud moves along the major axis of the elliptical hole, the limit hook 612 for plugging the containing groove moves to one side of the containing groove, and the pushing rod of the pushing cylinder 616 stops moving. The push rods of the two cylinders on the rotating arm beam 602 move upwards simultaneously, all branch flow channel pipe fittings of the forming plate core move out of the accommodating grooves of the branch pipe accommodating plates one by one respectively, the driving cylinder is started, the driving rod of the driving cylinder retracts, the eccentric rotating block is driven to rotate reversely along the rotating shaft, and the rotating arm beam at the other end of the eccentric rotating block rotates reversely until the rotating arm beam is parallel to the horizontal supporting beam. The main pipe clamping jaw device 4 is kept still, the main pipes at the two ends of the forming plate core are fixed by the clamping jaw assemblies 402 which are symmetrical in pairs, and the main pipes are ready to be connected with a pressure testing device to enter a pressure testing process.

Referring to fig. 9, the pressure testing device 7 is provided with two symmetrically arranged at two ends of the pressure testing workbench 5, the pressure testing device 7 comprises a horizontally arranged air supply pipe 701, the front end of the air supply pipe 701 is provided with an air supply joint 704 which is matched and sealed with the main pipe of the plate core, and the air supply joint 704 is provided with a tapered end; the air supply joint 704 faces the opening end of the main pipe of the forming plate core, and the other end of the main pipe is in a closed state. The tail end of the air supply pipe is connected with an external air source through the air supply pipe, the air supply pipe is provided with a pressure gauge 707, the air supply pipe is provided with a grading cylinder, the grading cylinder comprises a primary cylinder 703 and a secondary cylinder 702, the primary cylinder 703 and the secondary cylinder 702 are sequentially connected end to end, the primary cylinder 703 tightly pushes against the tail end of the air supply connector, the primary cylinder 703 and the secondary cylinder 702 are both provided with an air inlet 705 and an air outlet 706, the air inlet is connected with an air inlet pipeline, the air inlet pipeline is opened to start air intake, the primary cylinder 703 drives the air supply pipe to move towards the opening direction of the main pipe, and the tapered end of the air supply connector pushes against the opening end of the main pipe to ensure complete sealing; and an external gas source starts to supply gas along the gas supply pipe, the gas is simultaneously filled into the pipe body of the forming plate core from the main pipes at the two ends of the forming plate core, and the gas supply is stopped until the forming plate core is full of the gas. The inlet line of the secondary cylinder 702 begins to admit air, providing a thrust to the primary cylinder 703, ensuring that the position of the primary cylinder remains stationary. And (5) observing the display value of a pressure gauge on the air supply pipe, keeping for 15min, keeping the pressure unchanged, and enabling the welding seam to reach the standard.

The exhaust port is connected with an exhaust pipeline. The primary cylinder 703 and the secondary cylinder 702 exhaust along the exhaust pipe, the tapered end of the air supply joint is separated from the open end of the main pipe, and the pressure test process is completed.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. The utility model provides an automatic production line of board core of super large flat plate collector which characterized in that: the automatic pipe fitting feeding and welding device comprises a forming workbench (1) for automatic feeding and welding of pipe fittings, wherein a pressure test workbench (5) for automatic pressure test of a formed plate core is arranged on one side of the forming workbench (1) side by side, and the heights of the pressure test workbench (5) and the forming workbench (1) are on the same horizontal plane; automatic welding machines (3) are arranged at two ends of a forming workbench, an automatic feeding device (2) and a forming plate core transfer device (8) are arranged on the forming workbench between the two automatic welding machines (3), the forming plate core transfer device (8) moves a forming plate core from the forming workbench (1) to a pressure test workbench (5), a forming plate core discharging device matched with the forming plate core transfer device is arranged on the pressure test workbench (5), a plurality of pressure test positioning plates (501) parallel to the width direction of the pressure test workbench are arranged on the pressure test workbench (5), and pressure test devices (7) are arranged at two ends of the pressure test workbench (5);

the automatic feeding device (2) comprises a plurality of welding positioning plates (101) which are arranged in parallel with the width direction of the forming workbench, one side of the forming workbench is provided with a discharging mechanism which travels along the direction of the welding positioning plates, the discharging mechanism comprises a material placing assembly, the material placing assembly is provided with a strip-shaped material placing plate (202), a plurality of material clamping devices (203) are uniformly distributed on the material placing plate (202) along the length direction, the forming workbench is provided with a driving mechanism (204) which drives the material placing assembly to move along the direction of the positioning plates, a turnover assembly (205) which drives the material placing plate to turn over is further arranged below the material placing plate, and after the pipe fittings are positioned and discharged through the automatic feeding device, an automatic welding process is carried out through butt welding seams of an automatic welding machine (3);

shaping core of board transfer device (8) establish lift walking frame (8) in shaping workstation welding locating plate one side including a plurality of, lift walking frame is including lifter plate (802) that set up from bottom to top, fast board of one-level (805) and the fast board of second grade (806), the height that goes up and down walking frame in flexible initial position department is less than the welding locating plate height, the fast board of second grade height is higher than the welding locating plate and supports the shaping core of board after the rise, be equipped with the power component of drive first grade fast board (805) and the fast board of second grade (806) reciprocating motion on the lifter plate, power component drive first grade fast board and the fast board of second grade move to the pressure testing workstation, the pressure testing process is carried out on the shaping core of board unloading device transfer to the pressure testing workstation to the shaping core of board.

2. The automatic production line for plate cores of oversized flat plate collectors according to claim 1, characterized in that: the primary speed plate (805) is provided with a short supporting leg (851) at one side close to the pressure test workbench, the secondary speed plate (806) is provided with a long supporting leg (861) at one side close to the pressure test workbench, universal wheels are arranged below the short supporting leg and the long supporting leg, two lifting cylinders (801) for driving the lifting plate to lift are arranged on the forming workbench right below the lifting plate, and after the primary speed plate and the secondary speed plate are lifted by the lifting plate, the power assembly drives the primary speed plate and the secondary speed plate to drive the forming plate core to move towards the pressure test workbench; the power assembly comprises a motor-driven folding chain (804) arranged between a lifting plate and a second-level speed plate, the lower-layer end of the folding chain is fixedly connected with one side, close to the pressure test workbench, of the lifting plate, the upper-layer end of the folding chain (804) is fixedly connected with one side, close to the pressure test workbench, of the second-level speed plate, the other end of the folding chain is provided with a chain pulley (803), and the chain pulley (803) is connected with the end of the first-level speed plate.

3. The automatic production line for plate cores of oversized flat plate collectors according to claim 1, characterized in that: the material clamping device (203) comprises an upper pressing plate (231) and a lower pressing plate (237) which are arranged up and down, one end of each of the upper pressing plate and the lower pressing plate is closed, the other end of each of the upper pressing plate and the lower pressing plate is provided with a discharging hole, a pipe placing space (232) is formed between the upper pressing plate and the lower pressing plate, and a pipe placing pipe control mechanism is arranged at the discharging hole; the pipe fitting discharging pipe control mechanism comprises a first telescopic blocking piece (236) arranged on the lower pressing plate and a second telescopic blocking piece (234) arranged on the upper pressing plate, the first telescopic blocking piece (236) and the second telescopic blocking piece (234) are distributed in the pipe placing space in a front-back mode, and a pipe fitting placing cavity (235) is formed between the first telescopic blocking piece (236) and the second telescopic blocking piece (234); a first cylinder (233) for driving the first telescopic separation blade to stretch is arranged below the lower pressing plate, and a second cylinder (238) for driving the second telescopic separation blade to stretch is arranged above the upper pressing plate; the second telescopic separation blade is in an extending state in the process of shrinking the first telescopic separation blade, the pipe fitting in the placing cavity falls into the positioning plate, after the first telescopic separation blade is stretched out again, the second telescopic separation blade is shrunk, one pipe fitting in the pipe placing space falls into the placing cavity, then the second telescopic separation blade is stretched out, and the pipe placing operation is repeated;

welding locating plate (101) on the shaping workstation and pressure testing locating plate (501) one-to-one on the pressure testing workstation become a sharp setting, and the both ends edge of a plurality of welding locating plate on each shaping workstation and pressure testing locating plate all aligns the setting, and the pipe fitting that is equipped with a plurality of equidistant setting on every welding locating plate shelves groove (111), and groove (111) one-to-one setting is shelved to the pipe fitting on a plurality of locating plate, and the pipe fitting on the same axis shelves the groove and constitutes the shelve space of placing whole pipe fitting, every drive first separation blade of first cylinder is regularly retracted once, and a pipe fitting falls into just in right time just right pipe fitting and shelves the inslot.

4. The automatic production line for plate cores of oversized flat plate collectors according to claim 1, characterized in that: the driving mechanism (204) comprises three sliding rails which are arranged on the forming workbench (1) and are arranged in parallel with the welding positioning plate (101), each sliding rail is provided with a sliding block (241) in a matching way, the upper part of each sliding block (241) is provided with a connecting block fixedly connected with the material placing plate (202), two sliding rails are respectively arranged at two ends of the material placing plate, and the other sliding rail is arranged in the middle of the material placing plate; a chain driven by a motor is arranged on a forming workbench (1) on one side of the middle sliding rail of the material placing plate, and the chain is fixedly connected with a sliding block on the middle sliding rail; all be equipped with rack (211) parallel with the slide rail on the slide rail one side shaping workstation of both ends, the meshing is equipped with gear (212) on rack (211), is equipped with synchronizing shaft (221) between two gears, is equipped with bearing frame (222) on synchronizing shaft (221), and the bearing frame links to each other with the coupling block on the slide rail that corresponds is fixed.

5. The automatic production line for plate cores of oversized flat plate collectors according to claim 1, characterized in that: the upset subassembly is equipped with two sets ofly, establishes respectively at the both ends of putting the flitch, and the upset subassembly includes eccentric plate (253) and upset cylinder (255), and eccentric plate (253) upside links to each other with putting flitch (202) bottom surface, and eccentric plate (253) lower part is equipped with eccentric orfice (252), and eccentric orfice (252) are articulated with the push rod tip of upset cylinder (255), and the eccentric plate middle part is equipped with special-shaped hole (256) that supply the synchronizing shaft to pass, upset cylinder afterbody is fixed through the slider on backup pad and the corresponding slide rail.

6. The automatic production line for plate cores of oversized flat plate collectors according to claim 1, characterized in that: the automatic welding machine (3) comprises a portal frame (307), a traveling device arranged along the length direction of the forming workbench is arranged below machine legs on two sides of the portal frame, the traveling device comprises machine leg guide rails (304) and a whole circle of belt pulleys (305), the whole circle of belt pulleys drive the machine legs to reciprocate on the machine leg guide rails (304), a plurality of main pipe support plates (306) are uniformly distributed on the forming workbench below the portal frame, the main pipe support plates (306) are arranged in a row, a pipe placing groove matched with a main pipe is arranged on each main pipe support plate (306), a driving device and an electric wire drag chain are arranged on a cross beam of the portal frame, a welding device (9) is arranged on each driving device, the driving device comprises a beam guide rail (309) and a full circle chain wheel driven by a driving motor (308), the beam guide rail and the full circle chain wheel are arranged in parallel, a beam sliding block (310) is arranged on the beam guide rail, and the beam sliding block (310) is connected with the welding device (9);

the welding device comprises two welding guns (902) which are opposite to two adjacent main pipe supporting plates, a vertically arranged servo cylinder (908) is arranged above the welding guns (902), the two welding guns (902) are both fixed on a telescopic rod of the servo cylinder (908), each welding gun (902) is connected with a mixed gas pipe, the mixed gas pipes are respectively connected with an oxygen supply pipeline and a gas pipeline, and flow regulating valves are arranged on the oxygen pipeline and the gas pipeline; every welder (902) includes that two are a set of welding gun head (903) that the Y type set up, corresponds between a set of welding gun head (903) and is equipped with a wire head (904), wire head (904) upwards are connected with wire feeding mechanism, wire feeding mechanism includes wire reel (901), wire reel one side is equipped with two sets of wire feeding wheels that set up in pairs, same set of wire feeding wheel is rotatory in opposite directions, the clearance that forms the welding wire and pass between the same set of wire feeding wheel, the welding wire output side of wire feeding wheel is equipped with two wire guides (906), every wire guide is terminal to link to each other with wire head (904), the welding wire passes wire guide respectively and wears out in the wire head, wire guide one side is equipped with servo cylinder (908) that the level set up, two wire guides equidistant fix on servo cylinder's telescopic link.

7. The automatic production line for plate cores of oversized flat plate collectors according to claim 6, characterized in that: welding set one side is equipped with row cigarette storehouse (301) and layering subassembly (302), and the storehouse top of discharging fume is equipped with smoke pipe (311), layering subassembly (302) are equipped with two, set up along the crossbeam symmetry, and every layering subassembly all includes and is responsible for the complex layering, is equipped with the connecting strip of vertical setting on the layering, and the connecting strip links to each other with telescopic cylinder (321) are fixed.

8. The automatic production line for plate cores of oversized flat plate collectors according to claim 1, characterized in that: the pressure testing device (7) is provided with two air supply pipes (701) which are symmetrically arranged at two ends of the pressure testing workbench (5), the pressure testing device comprises a horizontal air supply pipe, the front ends of the air supply pipes are provided with air supply connectors (704) which are matched and sealed with the plate core main pipe, and the air supply connectors are provided with conical end heads; the tail end of an air supply pipe (701) is connected with an external air source through the air supply pipe, a pressure gauge (707) is arranged on the air supply pipe, a grading cylinder is arranged on the air supply pipe and comprises a first-stage cylinder (703) and a second-stage cylinder (702), the first-stage cylinder and the second-stage cylinder are sequentially connected from head to tail, the top of the first-stage cylinder tightly pushes the tail end of an air supply connector, an air inlet (705) and an air outlet (706) are arranged on the first-stage cylinder and the second-stage cylinder, the air inlet is connected with an air supply pipeline, and the air outlet is connected with an air exhaust pipeline.

9. The automatic production line for plate cores of oversized flat plate collectors according to claim 1, characterized in that: the formed plate core unloading device comprises a main pipe clamping jaw device (4) arranged at two ends of the pressure test workbench and a branch pipe fixing device (6) arranged in the middle of the pressure test workbench; be responsible for clamping jaw device (4) including locating rack (401), is equipped with the transverse motion mechanism and the vertical motion mechanism that mutually perpendicular set up on the locating rack, and transverse motion mechanism includes horizontal cylinder (406), and the transverse expansion rod tip of horizontal cylinder (406) links to each other with vertical motion mechanism, and vertical motion mechanism includes vertical cylinder (405), and the vertical expansion rod tip below of vertical cylinder (405) is equipped with clamping jaw subassembly (402), clamping jaw subassembly includes two first arc clamping jaw (421) and second arc clamping jaw (422) that set up and indent in opposite directions, is equipped with reciprocating cylinder (423) of the first arc clamping jaw motion of drive between first arc clamping jaw and second arc clamping jaw (422), and reciprocating cylinder level sets up, reciprocating cylinder's telescopic rod tip and first arc clamping jaw fixed connection.

10. The automated production line for plate cores of oversized flat plate collectors according to claim 9, characterized in that: the branch pipe fixing device (6) comprises a horizontally arranged rotary arm beam (602), two vertically arranged cylinders (603) are uniformly distributed on the rotary arm beam, the end parts of push rods of the two cylinders are connected with horizontally arranged branch pipe clamping jaw assemblies, each branch pipe clamping jaw assembly comprises a branch pipe containing plate (615), a pushing cylinder (616) and a limiting hook plate (613) are arranged on one side of each branch pipe containing plate (615), the end part of a push rod of each pushing cylinder (616) is connected with the end part of each limiting hook plate (613), the pushing cylinders (616) drive the limiting hook plates (613) to reciprocate along the corresponding branch pipe containing plates (615), a plurality of containing grooves (611) which are arranged at equal intervals are arranged on the lower edges of the branch pipe containing plates (615), the rotary arm beam rotates to be parallel to the pressure test positioning plates, the containing grooves are arranged in one-to-one correspondence with the pressure test upper pipe positioning plate placing grooves, a plurality of limiting hooks (612) for plugging the containing grooves are arranged at equal intervals under the limiting hook plates (613), elliptical holes (614) are formed in two ends of the limiting hook plate, guide studs are arranged on the branch pipe containing plates at positions corresponding to the elliptical holes, and the guide studs move along the long axes of the elliptical holes.

11. The automated production line for plate cores of oversized flat plate collectors according to claim 10, characterized in that: the vertical rotation axis (605) that is equipped with of arm roof beam (602) one end revolves, the cover is equipped with eccentric rotatory piece (606) on rotation axis (605), be equipped with the eccentric orfice on eccentric rotatory piece (606), the arm roof beam that revolves is located rotation axis one end and links to each other with eccentric rotatory piece, the arm roof beam that revolves (602) other end passes through cable chain (604) and links to each other with the universal ring on rotation axis top, eccentric rotatory piece below is equipped with horizontal support beam (608) parallel with the pressure testing workstation long limit, be equipped with the rotatory actuating cylinder (607) that drives of arm roof beam that revolves of drive on the horizontal support beam, the eccentric orfice is articulated with the actuating lever that drives actuating cylinder.