CN1267575A - Tube expanding machine and process - Google Patents
Tube expanding machine and process Download PDFInfo
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- CN1267575A CN1267575A CN 99114713 CN99114713A CN1267575A CN 1267575 A CN1267575 A CN 1267575A CN 99114713 CN99114713 CN 99114713 CN 99114713 A CN99114713 A CN 99114713A CN 1267575 A CN1267575 A CN 1267575A
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Abstract
The present invention consists of frame, roller, cylinder, mandrel and other parts. There are at least one first mandrel locking mechanism installed in the front of the frame, one second mandrel locking mechanism installed in the front of mandrel piercing head, and one pipe blank locking mechanism connected to the main push cylinder before the frame and the main pull cylinder in the tail of the frame via one force transmitting mechanism. The mandrel is installed over the roller and one fixture is installed behind the mandrel piercing head. The present invention may be used to produce steel pipe with diameter over 630 mm, including specially shaped pipe, and may be used to shape pipe.
Description
The present invention a kind ofly expands pipe the pipe expander make steel pipe and expands system technology, and decapacitation is expanded outside the steel pipe of the existing diameter of system, particularly can expand and make diameter at the large-diameter steel pipe more than 630 millimeters.In expanding system technology, pipe mainly is subjected to compression.After special-purpose square tube shaped component is installed, can make square tube.
Existing drawing formula expands machine, introduces chain reductor, plug lifting platform oil cylinder, plug by main motor, main gear reducer, plyer, main chain bed, tube drawing mould bases, pipe lifting platform, rise and fall roller, expander mould bases, outer snap ring, outer snap ring oil cylinder, interior snap ring, interior snap ring oil cylinder, plug and returns chain reductor, three plug push action cylinders, plug lifting important actor, plug crane, four plug uncinate gyrus oil cylinders etc. and constitute.When expanding the system steel pipe, heat by heating furnace the pipe end, by pipe-expanding machine bell mouth shape is expanded in the pipe end afterwards, after pipe being sent into the whole heating of walking beam furnace subsequently, send into fixedly pipe of the horn mouth place of expander main frame by the pipe end again, in pipe, come directly towards simultaneously by special core rod and the hole enlargement on plug, main chain bar pulling plug, make plug moving linearly in pipe, top on the plug enlarges the external diameter of pipe, make steel pipe,, reach the production tube requirement at last by the hot saw crop.When this pipe expander expanded system, the hole enlargement amount after each heating was little, when needs expand to outer diameter of steel pipes, must reheat and expand system.This mode expands the system steel pipe, and the maximum diameter of steel tube that its expansion system can reach is 630 millimeters.Because steel pipe maintains static in expanding system, the top moving linearly is by the centralized positioning of top.The pipe metal bears huge tension all the time in deformation process, unfavorable to the wall thickness deformation of pipe, and particularly along with the pipe external diameter enlarges, the wall thickness extreme difference becomes greatly, and wall unevenness is even, and the lumber recovery of steel pipe is low, and directly influences pipe quality.ZL96248080.0 discloses a kind of hydraulic extend pipe machine, by being connected with support plate on frame, the frame, is connected with mandrel and hydraulic cylinder on the support plate, is connected with formations such as push pedal on the hydraulic cylinder.Expanding system technology is that oil cylinder acts on the pipe, promote steel pipe and pass the plug hole enlargement, this pipe expander exist the diameter of steel tube that expands system less, can not large-scale production, quality of production instability, expand in the system plug and locate shortcomings such as inaccurate.
The objective of the invention is provides a kind of large-diameter steel pipe of producing for the shortcoming that overcomes above-mentioned pipe expander; pipe is mainly stressed in process of production is compression; the energy large-scale production; the pipe expander that the quality of production is stable provides a kind of plug accurate positioning in expanding system, the stressed technology preferably of pipe simultaneously.Utilize pipe expander, can also carry out the steel pipe shaping.Of the present invention
The object of the present invention is achieved like this: pipe expander of the present invention passes roller-way, oil cylinder, plug etc. by frame, chain and constitutes, plug is installed in the top that chain passes roller-way, it also comprises the plug retaining mechanism A before having at least to be installed in frame, before the plug top plug retaining mechanism B is installed at least; At least be equipped with one with the pipe retaining mechanism C that oil cylinder links that promotes mainly that installs at the frame front end; Pipe retaining mechanism C by strength transmission mechanism with draw oil cylinder to link the master of frame afterbody; Cartridge device G is installed in the plug rear.
Pipe expander of the present invention also comprises a pipe retaining mechanism D who links with pipe retaining mechanism C.
The pipe retaining mechanism C of pipe expander of the present invention and pipe retaining mechanism D are made by 2 number plate mills and 1 number plate mill, 2 number plate mills and 1 number plate mill are made of adjustable end stop, hoist cylinder and lifting guide plate etc., adjustable end stop is connected on the hoist cylinder, and adjustable end stop slides on the lifting guide plate.Plug retaining mechanism A is made by deck, and deck is made of oil cylinder, fixture block and base, and fixture block is connected on the oil cylinder.Plug retaining mechanism B is made by ambulatory splint, and ambulatory splint is made of oil cylinder, fixture block and base, and oil cylinder connects fixture block.Strength transmission mechanism is made of relay link rod, shaft coupling, load link rod, 3 number plate mills, and an end of relay link rod and load link rod is installed on the shaft coupling, and the other end of load link rod is installed on the 3 number plate mills.Shaft coupling is made of fishing box, cover plate, the recess that arbitrary two opposite side of fishing box have relay link rod or load link rod to put into, and cover plate is fixed on the fishing box by fixture.The present invention also comprises at least one adaptive roller-way, and adaptive roller-way is installed in the below of plug top.The length of the circumference of the arc of adaptive roller-way be not less than made steel pipe circumference length 1/3rd.The plug detent mechanism is made of deck, ambulatory splint, adaptive roller-way, and the fixture block on the deck blocks the afterbody of plug, and the portion that the fixture block on the ambulatory splint blocks before the plug top positions respectively, and the top of plug is placed on the adaptive roller-way.During work, the fixture block on the deck is opposite with the sequence of movement that the fixture block on the ambulatory splint is opened and blocked.Plug is made of barred body, lamination, block, securing member etc., and lamination is installed on the barred body, is blocked by block, is fixed on the barred body by securing member.The present invention also comprises a heating furnace, and heating furnace is installed on the preceding frame in plug top by suspension holdfast, and heating furnace is made for the hollow metal canal curvature.Cartridge device G is made by drawhead box, drawhead box by casing, promote mainly oil cylinder, hydraulic pressure fixture block, fixture block and drive oil cylinder, mandrel, chuck etc. and constitute, chuck, mandrel are connected in to be promoted mainly on the oil cylinder, the hydraulic pressure fixture block is connected in fixture block and drives on the oil cylinder, and the installation site of hydraulic pressure fixture block is that the groove on it is corresponding with the groove of load link rod.Chain passes roller-way and is made of handwheel, worm gear screw lift, electric reducer etc., and handwheel, worm gear screw lift connect the frame of roller-way, and electric reducer connects with two roller-ways.The position of center line of the steel pipe of system is expanded in the height decision of chain biography roller-way.
The method of expansion system steel pipe of the present invention is in expanding the system process, and the tube head of pipe pushes away when expanding the certain position of making behind the plug top, and tube head is clamped, and pipe promptly is pulled.
The present invention has three kinds to expand the system mode:
(1) push pull type: technological process is to expand in the system process at pipe, and pipe will be subjected to main oil cylinder and pulling force and the thrust of promoting mainly the oil cylinder generation of drawing simultaneously.
(2) single pull-type: technological process is to expand in the system process at pipe, and pipe is subjected to the master and draws oil cylinder and promote mainly the pulling force that oil cylinder produces individually or simultaneously.
(3) single pushing-type: technological process is to expand in the system process at pipe, and pipe is subjected to the master and draws oil cylinder and promote mainly the thrust that oil cylinder produces individually or simultaneously.
Pipe expander of the present invention is equipped with die holder between 2 number plate mills and 3 number plate mills after taking out plug, shaping mould is installed on the die holder, can carry out the inside and outside shaping of steel pipe.
A kind of technology of carrying out shaping at thermal expansion machine, pipe retaining mechanism C or pipe retaining mechanism D be steel pipe fixedly, promote mainly oil cylinder or main draw oil cylinder to promote pulling or promote mainly oil cylinder with main draw oil cylinder to move simultaneously to make the steel pipe motion pass shaping mould carry out interior shaping.
Realize that pipe expander carries out the specific purpose tool square tube shaped component that square tube expands system, floral disc is installed on the member frame, and a pair of horizontal roll and vertical roller are installed on the floral disc at least.In horizontal roll and the vertical roller roll mandrel is installed.
The present invention has can produce large-diameter steel pipe, and diameter of steel tube is more than 630 millimeters, can large-scale production, and the quality of production is stable, and expand the characteristics of plug accurate positioning in the system, the stressed technology preferably of pipe.And can improve the steel pipe lumber recovery, reduce production costs.In addition, the present invention can also the production square tube etc., and can carry out inside and outside shaping to steel pipe, and outer shaping is finished by mould, and interior shaping is finished by plug.
Be illustrated in conjunction with the embodiments with reference to the accompanying drawings below.
Fig. 1 is the front view of the dimension sketch of existing hot-drawn tube machine.
Fig. 2 is the vertical view of the dimension sketch of existing hot-drawn tube machine.
Fig. 3 is the front view of the dimension sketch of one embodiment of the present of invention.
Fig. 4 is the vertical view of the dimension sketch of one embodiment of the present of invention.
Fig. 5 is the front view of memorial archway C.
Fig. 6 is the right view of memorial archway C.
Fig. 7 is that F is to view.
Fig. 8 is the front view of deck.
Fig. 9 is the right view of deck.
Figure 10 is that E is to view.
Figure 11 is the front view of ambulatory splint.
Figure 12 is the left view of ambulatory splint.
Figure 13 is the front view of shaft coupling.
Figure 14 is the left view of shaft coupling.
Figure 15 is the vertical view of shaft coupling.
Figure 16 is the schematic diagram of plug and location thereof.
Figure 17 is that H is to view.
Figure 18 is the front view of adaptive roller-way.
Figure 19 is the left view of adaptive roller-way.
Figure 20 is the front view of heating furnace.
Figure 21 is the left view of heating furnace.
Figure 22 is the left view of drawhead box.
Figure 23 is the vertical view of drawhead box.
Figure 24 is the front view of load link rod.
Figure 25 is the front view of roller-way.
Figure 26 is the right view of roller-way.
Figure 27 is the front view of pipe die sleeve.
Figure 28 is the left view of pipe die sleeve.
Figure 29 is the cross-sectional view of die holder.
Figure 30 is the front view of square tube shaped component.
Figure 31 is the left view of square tube shaped component.
The be denoted as main motor 1, main gear reducer 2, plyer 3, main chain bed 4, tube drawing mould bases 5, pipe lifting platform 6, rise and fall roller 7, expander mould bases 8, outer snap ring 9, outer snap ring oil cylinder 10, interior snap ring 11, interior snap ring oil cylinder 12, plug of each parts introduced chain reductor 13, plug lifting platform oil cylinder 14, plug and returned chain reductor 15, three plug push action cylinders 16, plug lifting important actor 17, plug crane 18, four plug uncinate gyrus oil cylinders 19 among Fig. 2.
As shown in Figure 3, Figure 4, promote mainly oil cylinder 21,43 for two and be installed on the oil cylinder seat, an end of promoting mainly piston in the oil cylinder 21,43 is installed on the 2 number plate mills 24.1 number plate mill 22 and 2 number plate mills 24 are by link rod 23,42 rigid attachment.One end of relay link rod 26,40 connects with 2 number plate mills 24, and the other end connects with shaft coupling 27,39.Load link rod 28,37 1 ends connect with shaft coupling 27,39, and the other end connects with 3 number plate mills 34.Two masters draw the piston rod of oil cylinder 32,36 to link to each other with 3 number plate mills 34.Deck 20 is installed on the preceding pedestal of machine, on the 34 rack-mounted chutes 71 of 24,3 number plate mills, 22,2 number plate mills, 1 number plate mill.Chain passes roller-way 41 and passes the below that 22,2 number plate mills 24,1 number plate mill are installed in plug 44.Plug 44 is installed in the top that chain passes roller-way 41 and adaptive roller-way 31, as shown in figure 16, the front portion of plug 44 promotes fixture block 50 by the oil cylinder on the deck 20 49 and snaps in the spill ring of plug 44 front portions, the rear portion of plug 44 promotes fixture block 53 by ambulatory splint 25 upper cylinders 51 and snaps in the spill ring at plug 44 rear portions, and plug 44 tops 30 are placed on the adaptive roller-way 31.Heating furnace 29 is installed in by suspension on the frame before the top 30 of plug 44.Drawhead box 33 is installed in the rear of the top 30 of plug 44, on the rack-mounted chute 71.As Fig. 8, shown in Figure 9, deck 20 is made of oil cylinder 49, fixture block 50 and base, and fixture block 50 is connected on the oil cylinder 49.As Fig. 5, shown in Figure 6, memorial archway 22,24 is made of adjustable end stop 47, hoist cylinder 46 and lifting guide plate 48 etc., and adjustable end stop 47 is connected on the hoist cylinder 46, and adjustable end stop 47 slides on lifting guide plate 48.As Figure 11, shown in Figure 12, ambulatory splint 25 is made of oil cylinder 51, fixture block 53 and base 52, and fixture block 53 connects oil cylinder 51.As Figure 13, Figure 14, shown in Figure 15, shaft coupling 27,39 is made of fishing box 55, cover plate 54, the recess that arbitrary two opposite side of fishing box 55 have relay link rod 26,40 to put into, and cover plate 54 is fixed on the fishing box 55 by fixture.As shown in figure 16, plug 44 is made of barred body 56, lamination 57, block 58, fastening bolt 59 etc., and lamination 57 is installed on the barred body 56, is blocked by block 58, is fixed on the barred body 56 by fastening bolt 59.Lamination 57 on the plug 44 can be made into circular or square, and is changed according to hole shape and the aperture that will expand system.As Figure 20, shown in Figure 21, heating furnace 29 is made for hollow metal pipe 60 bendings.As Figure 22, shown in Figure 23, drawhead box 33 by casing 61, promote mainly oil cylinder 66, hydraulic pressure fixture block 67, fixture block and drive oil cylinder 65, mandrel 64, chuck 63 etc. and constitute, chuck 63, mandrel 64 are connected in to be promoted mainly on the oil cylinder 66, hydraulic pressure fixture block 67 is connected in fixture block and drives on the oil cylinder 65, and the installation site of hydraulic pressure fixture block 67 is that the groove on it is corresponding with the groove on the load link rod 28,37 shown in Figure 24.Expansion system for the steel pipe that adapts to plurality of specifications also is equipped with a taper liner piece 62 in the drawhead box 33, taper liner piece 62 is installed between the medial surface of chuck 63 and casing 61.As Figure 25, shown in Figure 26, chain passes roller-way 35,41 and is made of handwheel 68, worm gear screw lift 69, electric reducer 70 etc., and handwheel 68, worm gear screw lift 69 coupling links pass the frame of roller-way 35,41, and electric reducer 70 connects with two roller-ways.As Figure 18, shown in Figure 19, adaptive Kun road 31 is movably arranged on the Kun road seat.Adaptive Kun road 31 be installed be in order to make firm expansion make the distortion of the steel pipe that comes little, therefore, the length of the circumference of the arc in adaptive Kun road 31 be not less than made steel pipe circumference length 1/3rd.As Figure 27, shown in Figure 28, take off adaptive Kun road 31 after, shaping mould 72 is installed on the die holder 38, can utilize this machine to carry out the steel pipe shaping.Present embodiment has two to promote mainly 21,42 and two masters of oil cylinder and draw oil cylinder 32,36.
Adopt one to promote mainly oil cylinder and a master draws oil cylinder also can implement the present invention.
In order to realize the location to plug 44, the mode that plug retaining mechanism A, B implement also has fixedly dolly etc. of manipulator, plug.
In order to realize fixing to pipe, the mode that pipe retaining mechanism C, D implement also has fixedly dolly etc. of manipulator, pipe.
In order to realize the chuck to pipe, the mode that cartridge device G implements also has manipulator, and a manipulator is used for fixing the head of pipe, has at least a manipulator to be used for connecting with load link rod 28,37, and manipulator connects with 3 number plate mills 34.
In order to realize the transmission of strength, the shaft coupling 27,39 in the strength transmission mechanism has numerous embodiments, can be made into the axle sleeve that an end that must connect with relay link rod 26,40 and load link rod 28,37 adapts as shaft coupling 27,39, adopts thread connection.Can also make plush copper by relay link rod 26,40 or load link rod 28,37 joining ends, another union end is made and the corresponding recess of plush copper, and expense mouth correspondingly on plush copper and recess after plush copper is inserted recess, is fixed by pin.
During enforcement, the present invention has three kinds of working methods: push pull type, single pushing-type and single pull-type.
Embodiment one:
Push pull type: after the start, pipe is sent to by charging roller 45, pass roller-way 41 by chain and insert this machine, at this moment, oil cylinder on the deck 20 49 promotes in the spill ring that fixture blocks 50 snap in plug 44 afterbodys plug 44 lockings, and the fixture block 53 on the ambulatory splint 25 is opened, adjustable end stop 47 on the 1 number plate mill 22 is depressed the chucking pipe, promote mainly oil cylinder 21,43 for two and start working, 1 number plate mill 22 drives pipe and advances, and finishes prescribed stroke.After stroke is finished, adjustable end stop 47 on the 1 number plate mill 22 is opened, promote mainly oil cylinder 21,43 and return original position, at this moment, adjustable end stop 47 on the 2 number plate mills 24 is depressed the chucking pipe, promotes mainly oil cylinder 21,43 task again, and 2 number plate mills 24 drive pipe and advance, finish prescribed stroke, the twice of each prescribed stroke is finished in twice propelling.Expand when making plug 44 tops 30 certain positions when pipe pushes away, hydraulic pressure fixture block 67 is stuck on the load link rod 28,37, oil cylinder 66 work of promoting mainly on the drawhead box 33, and pipe is sandwiched in the gap between chuck 63 and the mandrel 64, and is snapped tight.At this moment, promote mainly oil cylinder 21,43 and main draw oil cylinder 32,36 to work simultaneously to finish prescribed stroke.After this time stroke is finished, hydraulic pressure fixture block 67 unclamps, break away from load link rod 28,37, the master draws oil cylinder 32,36 to reset, at this moment, promote mainly oil cylinder 21,43 and finished the stroke of pipe, reset, when hydraulic pressure fixture block 67 was stuck on the load link rod 28,37 once more, the adjustable end stop of promoting mainly on the 1 number plate mill 22 of oil cylinder 21,43 47 was depressed the back pipe of chucking, promoted mainly oil cylinder 21,43 and drew oil cylinder 32,36 to work simultaneously once more to finish prescribed stroke with leading, at this moment, the oil cylinder 66 of promoting mainly of drawhead box resets, and unclamps pipe, and a fished pipe expands system and finishes.In this expansion system mode, relay link rod 26,40 and 2 number plate mills 24 and shaft coupling 27,39 disconnect.
Push away to draw that to expand 12 meters long steel pipes of system be example, pipe is sent to by charging roller 45, by chain pass roller-way 41 insert pack into plug 44 after, at this moment, deck 20 is with plug 44 lockings, and the clamping plate 53 on the ambulatory splint 25 are opened, adjustable end stop 47 on the 1 number plate mill 22 is depressed the chucking pipe, promote mainly oil cylinder 21,43 work for two, drive pipe by 1 number plate mill 22 and advance, finish 6.5 meters of strokes.At this moment, adjustable end stop 47 on the 1 number plate mill 22 is opened, promoting mainly oil cylinder 21,43 resets, adjustable end stop 47 on the 2 number plate mills 24 is depressed the chucking pipe, promote mainly oil cylinder 21,43 task again, drive pipe by 2 number plate mills 24 and advance, finish 6.5 meters of strokes, actual 13 meters of the strokes of finishing of twice propelling.Make plug 44 tops 30 when having 200 millimeters when pipe pushes away to expand, the hydraulic pressure fixture block 67 on the drawhead box 33 compresses load link rod 28,37, and pipe is stung tightly by drawhead box 33.At this moment, promote mainly oil cylinder 21,43 and main draw oil cylinder 32,36 to work simultaneously to finish 6.5 meters of strokes.After this time stroke is finished, the hydraulic pressure fixture block 67 of drawhead box 33 breaks away from load link rod 28,37, the main oil cylinder 32 that draws, 36 reset, at this moment, promote mainly oil cylinder 21,43 have finished the stroke of pushing pipe, reset, when hydraulic pressure fixture block 67 is stuck in load link rod 28 once more, in the time of on 37, promote mainly oil cylinder 21, adjustable end stop 47 on 43 the 1 number plate mill 22 is depressed the back pipe of chucking, promotes mainly oil cylinder 21,43 with the main oil cylinder 32 that draws, 36 work once more simultaneously, promote mainly oil cylinder 21,43 finish 6.5 meters of strokes, the main oil cylinder 32 that draws, 36 finish 6.5 meters of strokes, and at this moment, the oil cylinder 66 of promoting mainly of drawhead box resets, unclamp pipe, a fished pipe expands system and finishes.
Embodiment two:
Single pull-type: drawhead box 33 abuts against the back at plug 44 tops, and hydraulic pressure fixture block 67 tightens load link rods 28,37,2 number plate mills 24 by relay link rod 26,40, shaft coupling 27,39, and load link rod 28,37 connects with 3 number plate mills 34.At this moment, mainly draw oil cylinder 32,36 and promote mainly oil cylinder 21,43 and connect.After the start, pipe is sent to by charging roller 45, pass roller-way 41 by chain and insert this machine, at this moment, oil cylinder on the deck 20 49 promotes in the spill ring that fixture blocks 50 snap in plug 44 afterbodys plug 44 lockings, and the fixture block 53 on the ambulatory splint 25 is opened, adjustable end stop 47 on the 1 number plate mill 22 is depressed the chucking pipe, promote mainly 21,43 and two masters of oil cylinder for two and draw oil cylinder 32,36 to start working, 1 number plate mill 22 drives pipe and advances, and finishes prescribed stroke.After stroke is finished, adjustable end stop 47 on the 1 number plate mill 22 is opened, the master draws oil cylinder 32,36 and promotes mainly oil cylinder 21,43 and return original position, at this moment, adjustable end stop 47 on the 2 number plate mills 24 is depressed the chucking pipe, and the master draws oil cylinder 32,36 and promotes mainly oil cylinder 21,43 task again, and 2 number plate mills 24 drive pipes and advance, finish prescribed stroke, the twice of each prescribed stroke is finished in twice propelling.When pushing away, expands when making plug 44 tops 30 certain positions pipe, four oil cylinders quit work, the adjustable end stop in 22,2 number plate mills 24,1 number plate mill is opened, at this moment, oil cylinder 66 work of promoting mainly of drawhead box 33, hydraulic pressure fixture block 67 is stuck on the load link rod 28,37, and pipe is sandwiched in the gap between chuck 63 and the mandrel 64, and is snapped tight.At this moment, four oil cylinders are worked simultaneously, finish prescribed stroke.After this time stroke is finished, hydraulic pressure fixture block 67 unclamps, break away from load link rod 28,37, the master draws oil cylinder 32,36 to reset, at this moment, promote mainly oil cylinder 21,43 and finished the stroke of pipe, reset, when hydraulic pressure fixture block 67 was stuck on the load link rod 28,37 once more, the adjustable end stop of promoting mainly on the 1 number plate mill 22 of oil cylinder 21,43 47 was depressed the back pipe of chucking, promoted mainly oil cylinder 21,43 and drew oil cylinder 32,36 to work simultaneously once more to finish prescribed stroke with leading, at this moment, the oil cylinder 66 of promoting mainly of drawhead box 33 resets, and unclamps pipe, and a fished pipe expands system and finishes.
Embodiment three:
Single pushing-type: the position of drawhead box 33 passes the rear portion of roller-way 35 at chain, hydraulic pressure fixture block 67 breaks away from load link rod 28,37,2 number plate mills 24 are by relay link rod 26,40, shaft coupling 27,39, load link rod 28,37 connects with 3 number plate mills 34, at this moment, promoting mainly oil cylinder 21,43 draws oil cylinder 32,36 to connect with main.After the start, pipe is sent to by charging roller 45, pass roller-way 41 by chain and insert this machine, at this moment, oil cylinder on the deck 20 49 promotes in the spill ring that fixture blocks 50 snap in plug 44 afterbodys plug 44 lockings, and the fixture block 53 on the ambulatory splint 25 is opened, adjustable end stop 47 on the 1 number plate mill 22 is depressed the chucking pipe, promote mainly oil cylinder 21,43 and main draw oil cylinder 32,36 to start working, 1 number plate mill 22 drives pipes and advances, and finishes prescribed stroke.After stroke is finished, adjustable end stop 47 on the 1 number plate mill 22 is opened, promote mainly oil cylinder 21,43 and main draw oil cylinder 32,36 to return original position, at this moment, adjustable end stop 47 on the 2 number plate mills 24 is depressed the chucking pipe, promotes mainly oil cylinder 21,43 and main oil cylinder 32,36 task again that draws, and 2 number plate mills 24 drive pipe and advance, finish prescribed stroke, the twice of each prescribed stroke is finished in twice propelling.At this moment, a fished pipe expansion system finishes.
In the embodiments of the invention, the each stroke of oil cylinder is at 0-7 rice.Make the plug top when being not less than 100 millimeters when pipe pushes away to expand, the tube head of pipe is promptly clamped by drawhead box.
More than or equal to 6.5 meters, adopt two-stage to expand system for pipe length, less than 6.5 meters, adopt one-level to expand system for pipe length.
The mode that expands the system steel pipe has two kinds: heat expands and cold expansion.
Heat expand promptly be in expanding the system process by heating furnace adopt Frequency Induction Heating with heating of pipe blank to 500-1200 ℃.
Cold expansion promptly is that the heating of pipe blank temperature is no more than 500C in expanding the system process, the steel pipe that the steel grade of mild steel such as mainly suitable low-alloy steel, stainless steel is made.Large-diameter and thin-wall pipe can adopt at normal temperatures with push-and-pull, singly draw, singly pushes away and realize expanding system.Thick-walled pipe can adopt below 500 ℃ a little heat with push-and-pull, singly draw, singly push away and realize to expand make.
The pipe expander of the embodiment of the invention, can expand the pipe external diameter is the 350-900 millimeter, wall thickness 8-30 millimeter, length 4-12 rice.
Take out plug 44, after taking off adaptive Kun road 31, as Figure 30, shown in Figure 31, square tube shaped component 73 is installed on the die holder 38, square tube shaped component 73 is by floral disc 74, member frame 75, horizontal roll 76 and 81, vertical roller 79 and 82, roll mandrel 77,78,80,83 constitute, floral disc 74 is installed on the member frame 75, roll mandrel 77,78,80,83 are installed on the floral disc 74, horizontal roll 76 and 81 is installed on roll mandrel 77 and 80, vertical roller 79 and 82 is installed on roll mandrel 78 and 83, horizontal roll 76 and 81 rotates on roll mandrel 77 and 80, and vertical roller 79 and 82 rotates on roll mandrel 78 and 83.The mode that expands the system square tube is identical with the mode that expands the rounding pipe.
After taking off adaptive Kun road 31, shaping mould 72 is installed on the die holder 38, can carries out the steel pipe shaping.
Claims (22)
1, a kind of pipe expander, pass roller-way (41) (35), oil cylinder, plug formations such as (44) by frame, chain, plug (44) is installed in the top that chain passes roller-way (41), it is characterized in that: it also comprises the plug retaining mechanism (A) before having at least to be installed in frame, at plug top (30) preceding plug retaining mechanism (B) that is equipped with at least; At least be equipped with one with the pipe retaining mechanism of installing at the frame front end (C) that oil cylinder (21) (43) links of promoting mainly; Pipe retaining mechanism (C) by strength transmission mechanism with draw oil cylinder (32) (36) to link the master of frame afterbody; Cartridge device (G) is installed in plug (44) rear.
2, pipe expander according to claim 1 is characterized in that: it also comprises a pipe retaining mechanism (D) that links with described pipe retaining mechanism (C).
3, pipe retaining mechanism according to claim 1 and 2 (C) or pipe retaining mechanism (D), it is characterized in that: make by 2 number plate mills (24) and 1 number plate mill (22), 2 number plate mills (24) and 1 number plate mill (22) are by adjustable end stop (47), hoist cylinder (46) and lifting guide plate formations such as (48), adjustable end stop (47) is connected on the hoist cylinder (46), and adjustable end stop (47) is gone up at lifting guide plate (48) and slided.
4, pipe expander according to claim 1 is characterized in that: described plug retaining mechanism (A) is made by deck (20), and deck (20) is made of oil cylinder (49), fixture block (50) and base, and fixture block (50) is connected on the oil cylinder (49).
5, pipe expander according to claim 1 is characterized in that: described plug retaining mechanism (B) is made by ambulatory splint (25), and ambulatory splint (25) is made of oil cylinder (51), fixture block (53) and base (52), and oil cylinder (51) connects fixture block (53).
6, pipe expander according to claim 1, it is characterized in that: described strength transmission mechanism is made of relay link rod (26) (40), shaft coupling (27) (39), load link rod (28) (37), 3 number plate mills (34), relay link rod (26) (40) is installed on the shaft coupling (27) (39) with an end of load link rod (28) (37), and the other end of load link rod (28) (37) is installed on the 3 number plate mills (34).
7, shaft coupling according to claim 6, it is characterized in that: shaft coupling (27) (39) is made of fishing box (55), cover plate (54), the recess that arbitrary two opposite side of fishing box (55) have relay link rod (26) (40) or load link rod (28) (37) to put into, cover plate (54) is fixed on the fishing box (54) by fixture.
8, pipe expander according to claim 1 is characterized in that: it also comprises at least one adaptive roller-way (31), and adaptive roller-way (31) is installed in the below of plug (44) top (30).
9, adaptive roller-way according to claim 8 is characterized in that: the length of the circumference of the arc of adaptive roller-way (31) be not less than made steel pipe circumference length 1/3rd.
10, pipe expander according to claim 1, it is characterized in that: plug (44) detent mechanism is made of deck (20), ambulatory splint (25), adaptive roller-way (31), fixture block (50) on the deck (20) blocks the afterbody of plug (44), the front portion, top (30) that fixture block (53) on the ambulatory splint (25) blocks plug (44) positions, and the top (30) of plug (44) is placed on the adaptive roller-way (31);
11, plug detent mechanism according to claim 10 is characterized in that: during work, the fixture block (50) on the deck (20) is opposite with the sequence of movement that the fixture block (53) on the ambulatory splint (25) is opened and blocked.
12, pipe expander according to claim 1, it is characterized in that: described plug (44) is by barred body (56), lamination (57), block (58), securing member formations such as (59), lamination (57) is installed on the barred body (56), block by block (58), be fixed on the barred body (56) by securing member (59).
13, pipe expander according to claim 1 is characterized in that: it also comprises a heating furnace, and heating furnace (29) is installed on the preceding frame in plug (44) top (30) by suspension, and heating furnace (29) is made for hollow metal pipe (60) bending.
14, pipe expander according to claim 1, it is characterized in that: described cartridge device (G) is made by drawhead box (33), drawhead box (33) by casing (61), promote mainly oil cylinder (66), hydraulic pressure fixture block (67), fixture block and drive oil cylinder (65), mandrel (64), chuck formations such as (63), chuck (63), mandrel (64) are connected in to be promoted mainly on the oil cylinder (66), hydraulic pressure fixture block (67) is connected in fixture block and drives on the oil cylinder (65), and the installation site of hydraulic pressure fixture block (67) is that the groove on it is corresponding with the groove of load link rod (28) (37).
15, pipe expander according to claim 1, it is characterized in that: described chain passes roller-way (41) (35) by handwheel (68), worm gear screw lift (69), electric reducer formations such as (70), handwheel (68), worm gear screw lift (69) connect the frame of roller-way, and electric reducer (70) connects with two roller-ways.
16, chain according to claim 15 passes roller-way, it is characterized in that: chain passes roller-way
(41) position of center line of the steel pipe of system is expanded in height decision.
17, a kind of expansion system technology on pipe expander is characterized in that: in expanding the system process, the tube head of pipe pushes away when expanding the certain position of making behind plug top (30), and tube head is clamped, and pipe promptly is pulled.
18, pipe expander according to claim 1 is characterized in that: have three kinds to expand the system mode:
(1) push pull type: technological process is to expand in the system process at pipe, and pipe will be subjected to main oil cylinder and pulling force and the thrust of promoting mainly the oil cylinder generation of drawing simultaneously.
(2) single pull-type: technological process is to expand in the system process at pipe, and pipe is subjected to the master and draws oil cylinder and promote mainly the pulling force that oil cylinder produces individually or simultaneously.
(3) single pushing-type: technological process is to expand in the system process at pipe, and pipe is subjected to the master and draws oil cylinder and promote mainly the thrust that oil cylinder produces individually or simultaneously.
19, pipe expander according to claim 1 is characterized in that: take out plug (44), between 2 number plate mills (24) and 3 number plate mills (34) die holder (38) is installed, shaping mould (72) is installed on the die holder (38), can carry out the steel pipe shaping.
20, a kind of technology of carrying out shaping at thermal expansion machine, it is characterized in that: pipe retaining mechanism (C) or pipe retaining mechanism (D) be steel pipe fixedly, promote mainly oil cylinder (21) (43) or main draw oil cylinder (32) (36) to promote pulling or promote mainly oil cylinder (21) (43) with main draw oil cylinder (32) (36) move simultaneously steel pipe is moved pass shaping mould (72) and carry out shaping.
21, realize that the described pipe expander of claim 1 carries out the specific purpose tool square tube shaped component that square tube expands system, it is characterized in that: floral disc (74) is installed on the member frame (75), and a pair of horizontal roll (76) (81) and vertical roller (79) (82) are installed on the floral disc (74) at least.
22, shaped component according to claim 21 is characterized in that: in horizontal roll (76) (81) and the vertical roller (79) (82) roll mandrel (77) (80) (78) (83) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114713A CN1110383C (en) | 1999-03-18 | 1999-03-18 | Tube expanding machine and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99114713A CN1110383C (en) | 1999-03-18 | 1999-03-18 | Tube expanding machine and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1267575A true CN1267575A (en) | 2000-09-27 |
| CN1110383C CN1110383C (en) | 2003-06-04 |
Family
ID=5277762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99114713A Expired - Fee Related CN1110383C (en) | 1999-03-18 | 1999-03-18 | Tube expanding machine and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1110383C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233388A (en) * | 2010-05-07 | 2011-11-09 | 速技能机械有限公司 | Pipe expanding tool |
| CN104624824A (en) * | 2014-12-12 | 2015-05-20 | 重庆龙煜精密铜管有限公司 | Fixedly-assembling body |
| CN105478606A (en) * | 2015-12-25 | 2016-04-13 | 中国人民解放军第五七二一工厂 | Guide pipe flaring tool with positioning mechanism |
| CN109731915A (en) * | 2018-12-14 | 2019-05-10 | 太原重工股份有限公司 | Thermal expansion top adjustment system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2271937Y (en) * | 1996-10-08 | 1998-01-07 | 王剑波 | Hydraulic pipe expander |
| CN2304484Y (en) * | 1997-05-26 | 1999-01-20 | 蔡清源 | Improved pipe expander for pipe heat exchanger |
-
1999
- 1999-03-18 CN CN99114713A patent/CN1110383C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233388A (en) * | 2010-05-07 | 2011-11-09 | 速技能机械有限公司 | Pipe expanding tool |
| CN104624824A (en) * | 2014-12-12 | 2015-05-20 | 重庆龙煜精密铜管有限公司 | Fixedly-assembling body |
| CN104624824B (en) * | 2014-12-12 | 2016-04-20 | 重庆龙煜精密铜管有限公司 | A kind of fixing assembly |
| CN105478606A (en) * | 2015-12-25 | 2016-04-13 | 中国人民解放军第五七二一工厂 | Guide pipe flaring tool with positioning mechanism |
| CN105478606B (en) * | 2015-12-25 | 2017-02-22 | 中国人民解放军第五七二一工厂 | Guide pipe flaring tool with positioning mechanism |
| CN109731915A (en) * | 2018-12-14 | 2019-05-10 | 太原重工股份有限公司 | Thermal expansion top adjustment system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1110383C (en) | 2003-06-04 |
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