CN104056878A - High-precision hot shape correcting machine - Google Patents

High-precision hot shape correcting machine Download PDF

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Publication number
CN104056878A
CN104056878A CN201410275576.9A CN201410275576A CN104056878A CN 104056878 A CN104056878 A CN 104056878A CN 201410275576 A CN201410275576 A CN 201410275576A CN 104056878 A CN104056878 A CN 104056878A
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crane
hinged
fork
support
oil cylinder
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CN201410275576.9A
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CN104056878B (en
Inventor
陈佳
王振生
王德清
王占理
彭德平
蒙家才
刘伟
曾强
罗儒鸿
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Xiangtan Huajin Heavy Equipment Technology Co ltd
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XIANGTAN HUAJIN TECHNOLOGY Co Ltd
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Publication of CN104056878A publication Critical patent/CN104056878A/en
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Publication of CN104056878B publication Critical patent/CN104056878B/en
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Abstract

The invention provides a high-precision hot shape correcting machine, which comprises a shape correcting machine host, a machine seat, a heating furnace, two pipe holding devices and a pipe conveying trolley, wherein two parallel chutes, a ball screw and an oil cylinder are arranged on the machine seat, the axial lines of the ball screw and the oil cylinder are respectively parallel to the two chutes, the ball screw is connected with a motor arranged at one end of the machine seat through a speed reducer, slide blocks are arranged in positions, corresponding to the two chutes of the machine seat, of the bottom of the shape correcting machine host, a screw nut is arranged in a position, corresponding to the ball screw arranged on the machine seat, of the bottom of the shape correcting machine host, the screw nut of the shape correcting machine host is sheathed on the ball screw of the machine seat, the shape correcting machine host is arranged on the two chutes of the machine seat through the two slide blocks, the heating furnace is arranged in front of the machine seat, a furnace opening of the heating furnace faces the shape correcting machine, the pipe conveying trolley is arranged between the machine seat and the heating furnace, and the two pipe holding devices are symmetrically and fixedly arranged at the two sides of the pipe conveying trolley and are arranged in a way of corresponding to cone head pull rods of the shape correcting machine host. The high-precision hot shape correcting machine has the advantages that the automation degree is high, the production efficiency is improved, and the work intensity of workers is reduced.

Description

The hot school of a kind of high accuracy type machine
Technical field
The invention belongs to mechanical field, be specifically related to a kind of hot school shape equipment of high strength high accuracy cylindrical pipes.
Background technology
In recent years, along with the adjustment of national energy layout, pipeline carries the quantity of the various energy to improve constantly.Bigbore demand pipe amount sharply increases, and requires also more and more higher to tube quality.Steel pipe shape-calibration machine is one of key equipment of Longitudinal SAW Pipe production line.Shape-calibration machine, as a kind of very crucial technical equipment that improves tube quality, is used more and more in tubulation is produced.Yet along with steel tubing quality and grade, other improves, the increase, particularly Aero-Space of steel pipe thickness and military field be to σ under room temperature condition b >=1700 MPa, σ 0.2 the hole enlargement of the ultra high strength alloy steel steel pipe of>=1400 MPa, normal temperature expanding technology can not meet instructions for use.And Aero-Space and military field are also very strict to the required precision of steel pipe, normal temperature expanding technology more can not meet the demands.For this type of high strength, high precision steel tube, be mainly that employing jack is manually repeatedly repeatedly proofreaied and correct full circle or adopted lathe to carry out turning processing at present, reach needed circularity.
Summary of the invention
In order to solve the problems of the technologies described above, to the invention provides that a kind of automaticity is high, production efficiency is high and can reduce the hot school of the high accuracy type machine of labor strength.
The technical solution used in the present invention is: comprise shape-calibration machine main frame, support, heating furnace, holding tube device and send pipe dolly, described support is provided with two parallel slideway, ball-screw and oil cylinders, the axis of ball-screw and oil cylinder is all parallel with two slideways, and ball-screw is connected with the motor of support one end by decelerator; Described shape-calibration machine main frame bottom is provided with slide block corresponding to two slideways of support, corresponding to the ball-screw on support, shape-calibration machine main frame bottom is provided with nut, and the nut sleeve of shape-calibration machine main frame is contained on the ball-screw of support, and shape-calibration machine main frame is placed on two slideways of support by slide block; Described heating furnace is placed in the place ahead of support, and heating furnace fire door is towards shape-calibration machine main frame; The described pipe dolly that send is placed between support and heating furnace;
The described pipe dolly bottom of sending is provided with slide block corresponding to two slideways on support, send pipe dolly by slide block, to be placed on two slideways of support; Corresponding to the oil cylinder on support, send pipe dolly bottom to be provided with pull bar, pull bar is connected with the piston rod of oil cylinder; Send pipe dolly to comprise chassis, slide plate, material loading fork, turnover panel, discharging fork, discharging fork bearing, unloading fuel tank and walking oil cylinder, the both sides on described chassis are respectively equipped with guide rail, guide rail corresponding to both sides, chassis on described slide plate is provided with road wheel, described walking oil cylinder one end and chassis are hinged, and the other end and slide plate are hinged; The both sides of described slide plate one end are installed with respectively a material loading fork bearing, on material loading fork bearing, material loading fork are installed, and material loading fork upper end is provided with V-type mouth; Described turnover panel and the other end of slide plate are hinged, and the bilateral symmetry of turnover panel is provided with discharging fork bearing, on discharging fork bearing, are installed with discharging fork, and discharging fork upper end is provided with V-type mouth; Described unloading fuel tank one end and turnover panel are hinged, and one end is hinged on material loading on slide plate and pitches between bearing and turnover panel;
Two described holding tube devices are fixedly mounted on the both sides of sending pipe dolly on support, corresponding to the conehead pull bar setting of shape-calibration machine main frame.
In the type machine of the hot school of above-mentioned high accuracy, described shape-calibration machine main frame comprises casing, conehead pull bar, attaching nut, adjustment gear and promotes gear, described conehead pull bar is arranged in casing, attaching nut is arranged on the conehead pull bar in casing, described attaching nut's outer wall is provided with external screw thread, the centre bore of adjusting gear is provided with internal thread, adjusts gear and is arranged on attaching nut outside, is spirally connected with attaching nut; Adjustment gear meshes with promoting gear, promotes gear and is arranged on casing by support, stretches out chassis end spanner is installed on the gear shaft of promotion gear.
In the type machine of the hot school of above-mentioned high accuracy, one end of described gear shaft is stretched out casing and is connected with ratchet spanner, the other end is provided with locking river, locking river is rack-mount by double end pull bar, the axis of double end pull bar is vertical with the axis of gear shaft, double end pull bar is provided with spanner through bracket end, and spanner and support are spirally connected, and between spanner and support, are provided with plain cushion.
In the type machine of the hot school of above-mentioned high accuracy, described holding tube device comprises holding tube device seat, crane, hoist cylinder, clamping jaw oil cylinder, the two-sided rack, bracing frame, two connecting rods, left jig arm, right jig arm and two gears; The tubular structure that described holding tube device seat is upper end open, crane is arranged in holding tube device seat inner chamber, and the inner chamber matched in clearance of crane bottom and holding tube device seat is provided with lacuna between top and the inner chamber of holding tube device seat; Described crane is hollow structure, and described hoist cylinder is arranged in the inner chamber of crane, and upper end and the crane of hoist cylinder are hinged, and lower end and holding tube device seat are hinged; Clamping jaw oil cylinder is arranged in the inner chamber of crane, and lower end and crane are hinged, and upper end is stretched out crane and is connected with tooth bar; Described bracing frame is U-shaped, is fixedly mounted on holding tube device seat, and two described gears are positioned on respectively on bracing frame by gear shaft, mesh respectively with the two-sided rack; On two gear shafts, be respectively equipped with drive plate, described left jig arm and right jig arm are hinged on respectively the two ends of bracing frame, two described connecting rod one end are hinged with two drive plates respectively, and the other end of two connecting rods is hinged with left jig arm and right jig arm respectively, and the upper end of left jig arm and right jig arm is respectively equipped with jaw.
In the type machine of the hot school of above-mentioned high accuracy, also comprise stock shelf, stock shelf is near sending the setting of pipe dolly, described stock shelf comprises chain, a plurality of shift fork and a plurality of adjustment fork that frame, crane, lift cylinder, positioning cylinder, two be arranged in parallel, described crane is positioned at the top of frame, hinged with frame, one end and the crane of described lift cylinder are hinged, and one end and frame are hinged; The two ends of the both sides of described crane are respectively equipped with a sprocket wheel, and the sprocket wheel at the two ends of homonymy connects by a chain; Described a plurality of shift forks and corresponding being arranged on two chains of a plurality of adjustment fork, shift fork is arranged on a chain by mobile forked standard, adjusts fork and is arranged on another chain by adjusting forked standard; The upper end of shift fork and adjustment fork is equipped with V-type mouth; The both sides at crane middle part are respectively equipped with a positioning cylinder, two positioning cylinder deads in line, and axis is perpendicular to chain, and piston rod is oppositely arranged.
In the type machine of the hot school of above-mentioned high accuracy, also comprise arranging machine, described arranging machine is placed in heating furnace shape-calibration machine host computer side dorsad, comprise arranging machine frame, oil cylinder, cut somebody's hair and control device, described oil cylinder is arranged in arranging machine frame, the piston rod of oil cylinder is connected with cutting somebody's hair, and the piston rod of oil cylinder is towards heating furnace, and the axis of oil cylinder is parallel with the axis of the conehead pull bar of shape-calibration machine main frame.
Compared with prior art, technique effect of the present invention is:
1. the present invention includes feeder, send pipe dolly and arranging machine, realized the mechanization production of material loading, discharging, greatly improved the mechanization degree of the hot school of high accuracy type machine, reduced workman's labour intensity, improved production efficiency.
2. shape-calibration machine main frame of the present invention is provided with adjustment gear on conehead pull bar, adjust gear and promote gear engagement, by ratchet spanner driven gear, rotate, and then drive adjustment gear to rotate, adjust gear moves on attaching nut, to adjust the distance between adjusting nut end face and casing inner wall, be also the stroke of conehead pull bar, by adjusting gear, can control more accurately the diameter that dilates of conehead mould.
3. holding tube device of the present invention is realized jaw by hoist cylinder and clamping jaw oil cylinder and is treated holding tightly of hole enlargement steel pipe, does not need manual operation, and automaticity is high, greatly reduces workman's labour intensity; By hoist cylinder and clamping jaw oil cylinder, realize that jaw is treated fastening time of hole enlargement steel pipe and fastening time and take-down time more required than existing tightening technology in take-down time is short, improved operating efficiency.
4. the present invention applies to expanding with wedge block principle the hot school shape of high strength high precision steel tube, has improved sizing precision, and mechanization degree is high, has reduced percent defective.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is A-A cutaway view in Fig. 1.
Fig. 3 is support of the present invention, stock shelf, send the arrangement figure of pipe dolly and heating furnace.
Fig. 4 is the structural representation of shape-calibration machine main frame of the present invention.
Fig. 5 be in Fig. 4 B to view.
Fig. 6 is C-C cutaway view in Fig. 5.
Fig. 7 is D-D cutaway view in Fig. 6.
Fig. 8 is the front view of holding tube device of the present invention.
Fig. 9 is the side view cutaway drawing of holding tube device of the present invention.
Figure 10 is the top view of holding tube device of the present invention.
Figure 11 is I place enlarged drawing in Fig. 8.
Figure 12 is the front view that send pipe dolly of the present invention.
Figure 13 is the side view that send pipe dolly of the present invention.
Figure 14 be of the present invention send pipe dolly the front view of turnover panel.
Figure 15 is E-E cutaway view in Figure 14.
Figure 16 is the front view of stock shelf of the present invention.
Figure 17 is the side view of stock shelf of the present invention.
Figure 18 is the front view of arranging machine of the present invention.
Figure 19 is the top view of arranging machine of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As Figure 1-3, the present invention includes shape-calibration machine main frame 1, support 2, holding tube device 3, stock shelf 7, send pipe dolly 4, heating furnace 5 and arranging machine 6; Described support 2 is provided with two parallel slideway 21, a ball-screw 22 and oil cylinders 23, and the axis of ball-screw 22 and oil cylinder 23 is all parallel with two slideways 21, and ball-screw 22 is connected with motor 25 by the decelerator 24 of support 2 rear ends; Described shape-calibration machine main frame 1 bottom is provided with slide block 11 corresponding to two slideways 21 of support 2, corresponding to the ball-screw 22 on support 2, shape-calibration machine main frame 1 bottom is provided with nut 22, the nut 12 of shape-calibration machine main frame 1 is sleeved on the ball-screw 22 of support 2, and shape-calibration machine main frame 1 is placed on two slideways 21 of support 2 by two slide blocks 11.Described heating furnace 5 is placed in the place ahead of support 1, and the fire door of heating furnace 5 is towards shape-calibration machine main frame 1.The described pipe dolly 4 that send is placed between support 1 and heating furnace 5, send the bottom of pipe dolly 4 to be provided with slide block corresponding to two slideways 21 on support 2, send pipe dolly 4 by slide block, to be placed on two slideways 21 of support 2; Corresponding to the oil cylinder 23 on support 2, send pipe dolly 4 bottoms to be provided with pull bar 4-1, pull bar 4-1 is connected with the piston rod of oil cylinder 23.Described holding tube device 3 is fixedly mounted on the both sides of sending pipe dolly 4 on support 2, corresponding to the conehead pull bar setting of shape-calibration machine main frame 1.Described stock shelf 7 is near sending pipe dolly 4 to arrange, and described arranging machine 6 is placed in heating furnace 5 side of shape-calibration machine main frame 1 dorsad.
As shown in Figure 4,5, described shape-calibration machine main frame 1 comprises casing 13, conehead pull bar 14, attaching nut 15, adjusts gear 16 and promotes gear 17, described conehead pull bar 14 is arranged in casing 13, attaching nut 15 is arranged on the conehead pull bar 14 in casing 13, described attaching nut's 15 outer wall is provided with external screw thread, the centre bore of adjusting gear 16 is provided with internal thread, adjusts gear 16 and is arranged on attaching nut 15 outsides, is spirally connected with attaching nut 15; Adjustment gear 16 meshes with promoting gear 17, promotes gear 17 and is arranged on casing 13 by support 18, stretches out casing 13 ends ratchet spanner 173 is installed on the gear shaft 172 of promotion gear 17.
As Fig. 6, shown in 7, described support 18 is provided with two otic placodes 181 perpendicular to gear shaft 172, two otic placodes 181 are provided with gear shaft installing hole, gear shaft 172 is arranged on support 18 by two gear shaft installing holes, gear shaft 172 one end are stretched out casing 13 and are connected with ratchet spanner 173, the other end is provided with locking river 174, locking river 174 is arranged on support 18 by double end pull bar 171, the axis of double end pull bar 171 is vertical with the axis of gear shaft 172, double end pull bar 171 is provided with spanner 176 through support 18 ends, double end pull bar 171 between spanner 176 and support 18 is provided with plain cushion 175.
As shown in Fig. 8-10, holding tube device 3 of the present invention comprises holding tube device seat 31, crane 32, hoist cylinder 33, clamping jaw oil cylinder 34, the two-sided rack 310, bracing frame 36, two connecting rods 35, left jig arm 37, right jig arm 39 and two gears 313; The tubular structure that described holding tube device seat 31 is upper end open, crane 32 is arranged in the inner chamber of holding tube device seat 31, and the inner chamber matched in clearance of crane 32 bottoms and holding tube device seat 31 is provided with lacuna 312 between top and the inner chamber of holding tube device seat 31.Described crane 2 is hollow structure, and described hoist cylinder 33 is arranged in the inner chamber of crane 32, and the upper end of hoist cylinder 33 and crane 32 are hinged, and lower end and holding tube device seat 31 are hinged.Described clamping jaw oil cylinder 34 is arranged in the inner chamber of crane 32, and lower end and crane 32 are hinged; Upper end is stretched out crane 32 and is connected with the two-sided rack 310.Described bracing frame 36 is U-shaped, is fixedly mounted on holding tube device seat 31, and two described gears 313 are positioned on respectively on bracing frame 36 by gear shaft 3131, and two gears 313 mesh with the two-sided rack 310 respectively; On two gear shafts 3131, be respectively equipped with drive plate 3132, described left jig arm 37 and right jig arm 39 are hinged on respectively the two ends of bracing frame 36, two described connecting rod 35 one end are hinged with two drive plates 3132 respectively, the other end of two connecting rods 35 is hinged with left jig arm 37 and right jig arm 39 respectively, and the upper end of left jig arm 37 and right jig arm 39 is respectively equipped with jaw 38.Described jaw 38 is arranged in left jig arm 37 or right jig arm 39 by jaw seat 381.
As Fig. 8, Figure 10, shown in Figure 11, on the upper wall of described holding tube device seat 31, corresponding to the lacuna between crane 32 tops and the inner chamber of holding tube device seat 31, be provided with two extension adjustment device 311, described extension adjustment device 311 comprises worm screw 3111, turbine 3114, locking nut 3118, nut sleeve 3116 and adjustment screw rod 3117, described worm screw 3111 is arranged on holding tube device seat 31 by bearing block, with turbine 3114 engagements, turbine 3114 is connected with nut sleeve 3116 by key 3115, and by locking nut 3118 axial location in nut sleeve 3116, nut sleeve 3116 is connected with adjustment screw rod 3117.In order to make two extension adjustment device 311 synchronous, sprocket wheel 3112, two sprocket wheels 3112 that are provided with corresponding on the worm screw 3111 of two described extension adjustment device 311 connect by chain; The worm screw 3111 of one extension adjustment device 311 is provided with handwheel 3113.
As shown in Figure 12,13, the pipe dolly that send of the present invention comprises chassis 41, slide plate 42, material loading fork 44, turnover panel 46, discharging fork 48, discharging fork bearing 47, unloading fuel tank 45 and walking oil cylinder 49, the both sides on described chassis 41 are respectively equipped with guide rail 411, guide rail 411 corresponding to 41 both sides, chassis on described slide plate 42 is provided with road wheel 421, described walking oil cylinder 49 one end and the one end on chassis 41 are hinged, and the other end and slide plate 42 are hinged; The both sides of one end of described slide plate 42 are installed with respectively a material loading fork bearing 43, material loading fork bearing 43 is provided with two parallel installing holes 431, installing hole 431 vertical direction sizes are greater than horizontal direction size, material loading fork 44 is fixedly mounted on material loading fork bearing 43 through two installing holes 431 by two screws, can by adjusting the position of screw on installing hole 431 vertical directions, adjust the height of material loading fork 44, material loading is pitched 44 upper ends and is provided with V-type mouth.Described turnover panel 46 is hinged with the other end of slide plate 42, and as shown in Figure 14,15, described turnover panel 46 is provided with the upper surface middle part that two parallel otic placode 461, two otic placodes 461 are positioned at turnover panel 46, and one end of described unloading fuel tank 45 and the otic placode 461 of turnover panel 46 are hinged; The other end of unloading fuel tank 45 is connected with slide plate 42 by hinged seat; Hinged seat is fixedly mounted on material loading on slide plate 42 and pitches between bearing 43 and turnover panel 46.Described discharging fork bearing 47 is provided with two parallel installing holes 471, installing hole 471 vertical direction sizes are greater than horizontal direction size, discharging fork 48 is fixedly mounted on discharging fork bearing 47 through two installing holes 471 by two screws, can by adjusting the position of screw on installing hole 471 vertical directions, adjust the height of discharging fork 48, discharging is pitched 48 upper ends and is provided with V-type mouth.
As shown in Figure 16,17, described stock shelf comprises chain 73, a plurality of shift fork 76 and a plurality of adjustment fork 78 that frame 71, crane 72, lift cylinder 75, two positioning cylinders 77, two be arranged in parallel, described crane 72 is positioned at the top of frame 71, hinged with frame 71, one end and the crane 72 of described lift cylinder 75 are hinged, and one end and frame 71 are hinged; The two ends of the both sides of described crane 72 are respectively equipped with a sprocket wheel, and the sprocket wheel at the two ends of homonymy connects by chain 73; 78 corresponding being arranged on two chains are pitched in described a plurality of shift forks 76 and a plurality of adjustment, and shift fork 76 is arranged on a chain by mobile forked standard 74, adjust fork 78 and are arranged on another chain by adjusting forked standard 77; The upper end of shift fork 76 and adjustment fork 78 is equipped with V-type mouth.The both sides at crane 72 middle parts are respectively equipped with the dead in line of positioning cylinder 77, two positioning cylinders 77, and axis is perpendicular to chain 73, and piston rod is oppositely arranged.
As shown in Figure 18,19, described arranging machine 6 comprises arranging machine frame 61, oil cylinder 62, cut somebody's hair 63 and control device 64, described oil cylinder 62 is arranged in arranging machine frame 61, the piston rod of oil cylinder 62 63 is connected with cutting somebody's hair, the piston rod of oil cylinder 63 is towards heating furnace 5, and the axis of oil cylinder 63 is parallel with the axis of the conehead pull bar 14 of shape-calibration machine main frame 1.Described control device 64 is controlled the stroke of cylinder piston rod.
Work progress of the present invention is as follows:
The first step: required school shape steel tube suspending to corresponding shift fork 76 and the adjustment of stock shelf 7 pitched on 78;
Second step: stock shelf 7 lift cylinders promote crane 72, and by crane 72 one end liftings, height of formation is poor, makes crane 72 shift forks higher than the material loading fork 44 that send pipe dolly 4;
The 3rd step: stock shelf 7 is by Induction Motor-Driven sprocket rotation, thus by sprocket wheel, drive the shift fork 76 on chain 73 and adjust fork 78 walkings, and positioning cylinder 77 positions that steel pipe are transported to stock shelf 7 stop;
The 4th step: the positioning cylinder 77 that is positioned at stock shelf 7 both sides moves simultaneously, by the steel pipe centering on shift fork 76 and adjustment fork 78;
The 5th step: stock shelf 7 Induction Motor-Driven sprocket wheels are rotated further, is transported to pipe dolly 4 material loadings forks 44 by steel pipe and waits position and stop;
The 6th step: stock shelf 7 lift cylinder 75 off-loads, the lifting end of stock shelf 7 is declined, the steel pipe on shift fork 76 and adjustment fork 78 is fallen on the material loading fork 41 of fortune pipe dolly 4;
The 7th step: fortune pipe dolly 4 walking cylinder actions, stop after steel pipe is transported on host center line;
The 8th step: clamping jaw oil cylinder 34 actions of holding tube device 3, are locked at holding tube device 5 on guide rail; Hoist cylinder 33 actions, bracing frame 36 rises, and steel pipe is lifted to conehead pull bar 14 isometry positions (lifting height mixes up in advance) of shape-calibration machine main frame 1;
The 9th step: the action of main frame servomotor, drive shape-calibration machine main frame 1 to advance to after expansion head injects steel pipe and stop,
The tenth step: the mould of shape-calibration machine main frame 1 is pre-tensioner
The 11 step: clamping jaw oil cylinder 34 actions of holding tube device 3, steel pipe is unclamped, hoist cylinder 33 declines, and bracing frame 36 falls.
The 12 step: the cylinder of heating furnace 5 action simultaneously, by oven door opening;
The 13 step: servomotor fast driving shape-calibration machine main frame 1 advances, and sends steel pipe to heating furnace 5.
The 14 step: the mold shrinkage of shape-calibration machine main frame 1, heating furnace 5 brackets rise and hold steel pipe, and heating furnace 5 fire doors are closed;
The 15 step: heating furnace 5 starts steel pipe heating, and nitrogen is opened.
The 16 step: infrared measurement of temperature mechanism thermometric;
The 17 step: by the heating of school shape steel pipe, reached after temperature, heating furnace 5 oven door opening,
The 18 step: shape-calibration machine main frame 1 advances fast, enters stove and connects steel pipe;
The 19 step: the bracket of heating furnace 5 declines;
The 20 step: oil cylinder 62 actions of arranging machine 6, promote steel pipe;
The 21 step: heating furnace 5 heating stop;
The 22 step: the servo-cylinder action of shape-calibration machine main frame 1, steel pipe is carried out to hole enlargement school shape;
The 23 step: hole enlargement school shape for the second time;
The 24 step: after pipe expanding completes, the mould of shape-calibration machine main frame 1 retraction, holding tube device 3 bracing frames 36 rise, clamping jaw oil cylinder 34 actions, jaw holding tube;
The 25 step: servo-cylinder drives shape-calibration machine main frame 1 to retreat fast, and holding tube device 5 jaws unclamp steel pipe, bracing frame 36 declines, and steel pipe is dropped on the discharging fork 48 of fortune pipe dolly 4.
The 26 step: transport pipe dolly 4 walking oil cylinders moving 49 and do, after driving dolly advances to discharge position, stop;
The 27 step: fortune pipe dolly 4 unloading fuel tanks 45 promote 48 upsets of discharging fork, and steel pipe is translated on unloading rack.Again by steel tube suspending from shape region, hole enlargement school.
Through above 27 steps, the hole enlargement school shape process of a steel pipe completes.

Claims (6)

1. the hot school of a high accuracy type machine, it is characterized in that: comprise shape-calibration machine main frame, support, heating furnace, holding tube device and send pipe dolly, described support is provided with two parallel slideway, ball-screw and oil cylinders, the axis of ball-screw and oil cylinder is all parallel with two slideways, and ball-screw is connected with the motor of support one end by decelerator; Described shape-calibration machine main frame bottom is provided with slide block corresponding to two slideways of support, corresponding to the ball-screw on support, shape-calibration machine main frame bottom is provided with nut, and the nut sleeve of shape-calibration machine main frame is contained on the ball-screw of support, and shape-calibration machine main frame is placed on two slideways of support by slide block; Described heating furnace is placed in the place ahead of support, and heating furnace fire door is towards shape-calibration machine main frame; The described pipe dolly that send is placed between support and heating furnace;
The described pipe dolly bottom of sending is provided with slide block corresponding to two slideways on support, send pipe dolly by slide block, to be placed on two slideways of support; Corresponding to the oil cylinder on support, send pipe dolly bottom to be provided with pull bar, pull bar is connected with the piston rod of oil cylinder; Send pipe dolly to comprise chassis, slide plate, material loading fork, turnover panel, discharging fork, discharging fork bearing, unloading fuel tank and walking oil cylinder, the both sides on described chassis are respectively equipped with guide rail, guide rail corresponding to both sides, chassis on described slide plate is provided with road wheel, described walking oil cylinder one end and chassis are hinged, and the other end and slide plate are hinged; The both sides of described slide plate one end are installed with respectively a material loading fork bearing, on material loading fork bearing, material loading fork are installed, and material loading fork upper end is provided with V-type mouth; Described turnover panel and the other end of slide plate are hinged, and the bilateral symmetry of turnover panel is provided with discharging fork bearing, on discharging fork bearing, are installed with discharging fork, and discharging fork upper end is provided with V-type mouth; Described unloading fuel tank one end and turnover panel are hinged, and one end is hinged on material loading on slide plate and pitches between bearing and turnover panel;
Two described holding tube devices are fixedly mounted on and on support, send pipe dolly both sides, corresponding to the conehead pull bar of shape-calibration machine main frame, arrange.
2. the hot school of high accuracy according to claim 1 type machine, it is characterized in that: described shape-calibration machine main frame comprises casing, conehead pull bar, attaching nut, adjustment gear and promotes gear, described conehead pull bar is arranged in casing, attaching nut is arranged on the conehead pull bar in casing, described attaching nut's outer wall is provided with external screw thread, the centre bore of adjusting gear is provided with internal thread, adjusts gear and is arranged on attaching nut outside, is spirally connected with attaching nut; Adjustment gear meshes with promoting gear, promotes gear and is arranged on casing by support, stretches out chassis end spanner is installed on the gear shaft of promotion gear.
3. the hot school of high accuracy according to claim 1 type machine, it is characterized in that: one end of described gear shaft is stretched out casing and is connected with ratchet spanner, the other end is provided with locking river, locking river is rack-mount by double end pull bar, the axis of double end pull bar is vertical with the axis of gear shaft, double end pull bar is provided with spanner through bracket end, and the double end pull bar between spanner and support is provided with plain cushion.
4. the hot school of high accuracy according to claim 1 type machine, is characterized in that: described holding tube device comprises holding tube device seat, crane, hoist cylinder, clamping jaw oil cylinder, the two-sided rack, bracing frame, two connecting rods, left jig arm, right jig arm and two gears; The tubular structure that described holding tube device seat is upper end open, crane is arranged in holding tube device seat inner chamber, and the inner chamber matched in clearance of crane bottom and holding tube device seat is provided with lacuna between top and the inner chamber of holding tube device seat; Described crane is hollow structure, and described hoist cylinder is arranged in the inner chamber of crane, and upper end and the crane of hoist cylinder are hinged, and lower end and holding tube device seat are hinged; Clamping jaw oil cylinder is arranged in the inner chamber of crane, and lower end and crane are hinged, and upper end is stretched out crane and is connected with tooth bar; Described bracing frame is U-shaped, is fixedly mounted on holding tube device seat, and two described gears are positioned on respectively on bracing frame by gear shaft, mesh respectively with the two-sided rack; On two gear shafts, be respectively equipped with drive plate, described left jig arm and right jig arm are hinged on respectively the two ends of bracing frame, two described connecting rod one end are hinged with two drive plates respectively, and the other end of two connecting rods is hinged with left jig arm and right jig arm respectively, and the upper end of left jig arm and right jig arm is respectively equipped with jaw.
5. according to the hot school of the high accuracy type machine described in claim 1,2,3 or 4, it is characterized in that: also comprise stock shelf, stock shelf is near sending the setting of pipe dolly, described stock shelf comprises chain, a plurality of shift fork and a plurality of adjustment fork that frame, crane, lift cylinder, positioning cylinder, two be arranged in parallel, described crane is positioned at the top of frame, hinged with frame, one end and the crane of described lift cylinder are hinged, and one end and frame are hinged; The two ends of the both sides of described crane are respectively equipped with a sprocket wheel, and the sprocket wheel at the two ends of homonymy connects by a chain; Described a plurality of shift forks and corresponding being arranged on two chains of a plurality of adjustment fork, shift fork is arranged on a chain by mobile forked standard, adjusts fork and is arranged on another chain by adjusting forked standard; The upper end of shift fork and adjustment fork is equipped with V-type mouth; The both sides at crane middle part are respectively equipped with a positioning cylinder, two positioning cylinder deads in line, and axis is perpendicular to chain, and piston rod is oppositely arranged.
6. the hot school of high accuracy according to claim 5 type machine, it is characterized in that: also comprise arranging machine, described arranging machine is placed in heating furnace shape-calibration machine host computer side dorsad, comprise arranging machine frame, oil cylinder, cut somebody's hair and control device, described oil cylinder is arranged in arranging machine frame, the piston rod of oil cylinder is connected with cutting somebody's hair, and the piston rod of oil cylinder is towards heating furnace, and the axis of oil cylinder is parallel with the axis of the conehead pull bar of shape-calibration machine main frame.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN202461342U (en) * 2012-03-14 2012-10-03 天津腾飞钢管有限公司 Charging device for thermally-expanded steel tube
CN203917495U (en) * 2014-06-19 2014-11-05 湘潭华进科技有限公司 The hot school of a kind of high accuracy type machine

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Publication number Priority date Publication date Assignee Title
US4028926A (en) * 1974-11-19 1977-06-14 Prvni Brnenska Strojirna, Narodni Podnik Handling device for slipping tubes on the mandrel of bending machines
EP0010597A1 (en) * 1978-10-14 1980-05-14 Th. Kieserling & Albrecht GmbH & Co. Feeding channel for bars and tubes
CN2925683Y (en) * 2006-03-30 2007-07-25 番禺珠江钢管有限公司 Movable expanding machine
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Publication number Priority date Publication date Assignee Title
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