CN102513359A - Seamless steel tube perforator piercing point on-line regulating device - Google Patents
Seamless steel tube perforator piercing point on-line regulating device Download PDFInfo
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- CN102513359A CN102513359A CN2011104408340A CN201110440834A CN102513359A CN 102513359 A CN102513359 A CN 102513359A CN 2011104408340 A CN2011104408340 A CN 2011104408340A CN 201110440834 A CN201110440834 A CN 201110440834A CN 102513359 A CN102513359 A CN 102513359A
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Abstract
The invention discloses a seamless steel tube perforator piercing point on-line regulating device, which comprises a piercing rod and a piercing rod trolley, wherein the piercing point is at one end of the piercing rod and is a cone; the terminal line of the cone is a straight line with transitional curves at two ends; and the other end of the piercing rod is arranged on the piercing rod trolley. The seamless steel tube perforator piercing point on-line regulating device is characterized by also comprising a locking device, wherein the position of the piercing rod trolley is locked by the locking device; when the piercing point presses a tube blank of a seamless steel tube, the locking device can move the locked position of the piercing rod trolley along the moving direction of the tube blank, so that the piercing rod can move together with the piercing rod trolley by means of a rolling force. According to the device, the piercing point can move along the moving direction of the tube blank in a tube blank perforation process, so that the outside diameter of the piercing point in a tube blank perforating forming region can be reduced to compensate for the increase of the outside diameter of the piercing point with heat expansion in the tube blank perforation process; and thus, the outside diameter of the piercing point in the tube blank perforating forming region can keep stable and constant, and the inside diameter of a tubular billet formed by tube blank perforation is not changed.
Description
Technical field
The present invention relates to the production of piercing mill of seamless steel tube, relate in particular to the processing behind the expanded by heating in process of production of the top of punching machine post rod.
Background technology
First procedure that the pipe perforation is produced as hot rolled seamless steel tube, its effect is that solid blank (being pipe) pierced billet is become hollow hollow billet.The wall thickness of the hollow billet that pipe perforation back forms, the size of the external diameter grade of tolerance have very big influence to follow-up tube rolling, sizing operation, have determined the qualification rate of steel pipe finished product.
Like Fig. 1 and shown in Figure 2, the punch perforated portion mainly includes roll 2, guide plate 3 and top 41, roll 2 be about two, be in tilted layout with respect to roll line, guide plate 3 be about two, fixed.In the perforation procedure; Blank pushing machine is sent into pipe 1 in the punch by portable station; Pipe 1 about under the traction of two roll 2 frictional force, the top 41 of the push rod 4 of servo-actuated forms the ring seal passes in the middle of being positioned at through two rolls 2, two guide plates 3 and one, finally accomplishes the perforation work of pipe 1.
The process that becomes hollow hollow billet in the face of solid pipe in the roll piercing process is down done and is launched explanation: send into pipe 1 in the roll 2 with blank pushing machine earlier when beginning to bore a hole; This moment, pipe 1 was involved in by roll 2; And drive pipe 1 moves forward while rotating; This moment, 1 of pipe contacted with roll 2, did not contact guide plate 3.Pipe 1 is introduced into the I district shown in Fig. 1 after being involved in by roll 2, because roll 2 porch working surfaces have tapering, the pipe 1 that moves forward gradually along the perforation direction in this district is compressed on diameter.Pipe 1 continues to move forward, and after meeting with top 41, the conehead of top 41 inserts in the internal point of pipe 1 front end face, at this moment the II district among pipe 1 entering Fig. 1.At this moment pipe 1 subtracts wall under the effect of roll 2 and top 41, and guide plate 3 plays a part the control transversely deforming.The final typing of pipe 1 tube wall is in pipe 1 and the terminal contacted place of top 41 straightways.When 41 straightways were terminal to the top, to go out the prostomum bus parallel owing to come directly towards the terminal bus of 41 straightways and roll 2 this moment, the effect that tube wall obtains flattening.As shown in Figure 2, because the cross section of the hollow billet of pipe 1 machine-shaping is oval-shaped, be circular and come directly towards 41 cross sections, therefore come directly towards 41 and exist the gap with pipe 1 moulding hollow billet endoporus.Because gap, pipe 1 moulding hollow billet just possibly be separated from top 41 freely.After leaving top 41 fully to pipe 1 moulding hollow billet inwall, then get into the III district among Fig. 1 of deformed area, promptly hollow billet changes the circle district.The hollow billet of pipe 1 machine-shaping at this moment can only contact with roll 2.Owing on the roll 2 outlet conical surfaces tapering is arranged; Distance between the roll 2 increases gradually, and the decrement on III district pipe 1 moulding capillary outer diameter reduces gradually, when hollow billet leaves roll 2; The drafts of roll 2 is zero, and the original oval outer circumference surface of hollow billet will become circle.
In the perforation procedure, the position of top 41 remains unchanged at present, guarantees top 41 front-extending quantities, and poling can be carried out smoothly.Yet pipe 1 generally is heated to about 1200 ℃, and whole perforation procedure will continue about more than 30 seconds, when pipe 1 constantly carries out perforation procedure; Because left and right roll 2, upper and lower guide plate 3 and come directly towards 41 relative position and immobilize, left and right sides roll 2, top 41 contact with pipe 1 in this process all the time; Temperature can reach 650 ℃-750 ℃, top 41 meetings expanded by heating in pipe 1 perforation procedure, and the internal diameter of the annular pass that top 41 expanding gradually in perforation procedure causes pipe 1 perforation is that constantly change is big in this process; And roll 2 is because material is different expands very limitedly, and the capillary outer diameter that pipe 1 forms remains unchanged basically, and this will make the wall thickness of hollow billet front end and rear end after pipe 1 moulding inconsistent; It is bigger than normal steel pipe front end wall thickness tolerance value to occur; Rear end wall thickness tolerance value problem less than normal, this has increased difficulty to subsequent handling, also will influence the steel pipe qualification rate; Reduce operating efficiency, promoted cost of manufacture.
Summary of the invention
To the problem that exists in the prior art, the object of the invention is to provide a kind of simple to operate, reliable and can make wall thickness tolerance reduces before and after the hollow billet that the pipe perforation forms position, piercing mill of seamless steel tube top at line adjusting device.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
Position, a kind of piercing mill of seamless steel tube top comprises push rod and ejector rob trolley provided at line adjusting device, and said push rod one end is the top; Said top is a cone, and said cone border line is the straight line that two has the transition arcs line, the said push rod other end be installed in said ejector rob trolley provided on; It is characterized in that; Also comprise locking device, the said locking device latched position of said ejector rob trolley provided dependence is in said top during the pipe of roof pressure seamless steel pipe; Said locking device can move said ejector rob trolley provided latched position along said pipe moving direction, make said push rod by roll-force with said ejector rob trolley provided move.
Further, said locking device comprises:
Locking bed, said locking bed are slidingly mounted on the said ejector rob trolley provided support;
Latch segment, said latch segment comprises rotating shaft, locking arm and motion arm, and said latch segment is installed on the said locking bed through said rotating shaft, and said locking arm leans the said ejector rob trolley provided locating piece that is provided with of going up;
Locking cylinder, said locking cylinder are pivoted on the said locking bed, and the piston rod of said locking cylinder pivots and connects said motion arm;
Locking motor, said locking motor is connected with reductor, and said locking motor and reductor all are fixedly mounted on the said ejector rob trolley provided support;
The adjustment cylinder, the cylinder body of said adjustment cylinder is fixedly mounted on the said locking bed, and the piston rod of said adjustment cylinder connects the output shaft of said reductor.
Further, said locking device also comprises the solenoid-operated proportional hydraulic valve, and said adjustment cylinder carries out fluid control through said solenoid-operated proportional hydraulic valve.
Beneficial effect of the present invention is that the top can be moved along the pipe moving direction among the present invention in the pipe perforation procedure, thereby reduces the external diameter of top in the pipe perforation forming area; With the compensation top external diameter value added that expanded by heating causes in the pipe perforation procedure; It is constant to make the external diameter maintenance that in pipe perforation forming area, comes directly towards stablize, constant with the hollow billet internal diameter that guarantees pipe perforation moulding, thereby improves the quality and the stability of pipe moulding hollow billet; Improve pipe perforation qualification rate; Reduce following process, increase work efficiency, reduce production costs.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further explain:
Fig. 1 is a pipe perforation procedure sketch map;
Fig. 2 be among Fig. 1 A to cross-sectional schematic;
Fig. 3 comes directly towards the position at line adjusting device master TV structure sketch map for a kind of piercing mill of seamless steel tube of the present invention;
Fig. 4 comes directly towards the position at line adjusting device plan structure sketch map for a kind of piercing mill of seamless steel tube of the present invention;
Fig. 5 be among Fig. 3 B to local enlarged diagram;
Fig. 6 be among Fig. 3 C to local enlarged diagram;
The cylinder structure sketch map is adjusted in position, Fig. 7 the present invention a kind of piercing mill of seamless steel tube top in line adjusting device;
Fig. 8 is the present invention a kind of piercing mill of seamless steel tube position, top push rod structure sketch map in line adjusting device.
The specific embodiment
The exemplary embodiments that embodies characteristic of the present invention and advantage will be described in detail in following explanation.Be understood that the present invention can have various variations on various embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be the usefulness of being used as explanation in itself, but not in order to restriction the present invention.
Like Fig. 1 and shown in Figure 2, pipe 1 perforation procedure comprise pipe 1, about two rolls 2 that are in tilted layout with respect to roll line, the top 41 of the push rod 4 of servo-actuated in the middle of two fixed guide plates 3 and are positioned at up and down.Done detailed argumentation about pipe 1, roll 2 and guide plate 3 course of action in the background technology part, repeated no more at this.
Like Fig. 3 and shown in Figure 4, the present invention includes push rod 4, ejector rob trolley provided 5 with locking device 6.Wherein, push rod 4 is used for roll 2 and guide plate 3 pipe 1 moulding of boring a hole; Ejector rob trolley provided 5 are used for installing and moving push rod 4; Locking device 6 is used for ejector rob trolley provided 5 positions of pipe 1 perforation procedure locking.
As shown in Figure 8, push rod 4 front ends are top 41, and the rear end connects and fixes through groove 42 and is installed on ejector rob trolley provided 5.Top 41 is a cone, and the body of rod 43 is a cylinder, comes directly towards 41 maximum outside diameter sizes greater than push rod 4 bodies of rod 43.Coming directly towards 41 conic section sideline main bodys is straight line, is the conehead of arc transition at the head of this cone, this cone base also arc transition to the body of rod 43 of push rod 4.It is parallel that 41 cone sideline, top and roll 2 go out the prostomum bus, finalizes the design to guarantee pipe 1 perforation.
As shown in Figure 5, among the present invention, ejector rob trolley provided 5 one ends are equipped with push rod 4, and the other end is connected with steel wire rope 51, and steel wire rope 51 is wound on the reel 57.Vehicle motor 52 drives reel 57 rotations through dolly reductor 56, and under steel wire rope 51 tractions, ejector rob trolley provided 5 can move forward and backward along track 53, and with adjustment push rod 4 positions, this vehicle motor 52 and track 53 are fixedly mounted on the ejector rob trolley provided support 55.In the time of after push rod 4 positions are confirmed, need boring a hole to pipe 1; Withstand the locating piece 54 on ejector rob trolley provided 5 through locking device 6; Make ejector rob trolley provided 5 can't in pipe 1 perforation procedure, retreat, thereby the strength that in pipe 1 perforation procedure, cooperates pipe 1 to advance lock ejector rob trolley provided 5 positions.Among the present invention, locking device 6 can slowly be retreated in pipe 1 perforation procedure, thereby makes push rod 4 under pipe 1 advances the promotion of strength, slowly retreat through ejector rob trolley provided 5, keeps stablizing constant with the external diameter that keeps top 41 in the pipe 1 perforation forming area.
As shown in Figure 6, among the present invention, locking device 6 comprises latch segment 61, locking cylinder 62, locking bed 63, locking motor 64, locking reductor 66, adjustment cylinder 65 and solenoid-operated proportional hydraulic valve platform 7.Wherein, latch segment 61 is used in pipe 1 perforation procedure locking ejector rob trolley provided 5; Locking cylinder 62 is used for rotating and locking latch segment 61; Locking bed 63 is used for supporting, moves latch segment 61 and locking cylinder 62; Locking motor 64 is used for driving locking bed 63 actions through locking reductor 66; Adjustment cylinder 65 is used for the position in pipe 1 perforation procedure adjustment locking bed 63, latch segment 61 and ejector rob trolley provided 5.
The cylinder body 622 of locking cylinder 62 is installed on the locking bed 63 pivotally.The piston rod 621 pivot attended operation arms 612 of locking cylinder 62, locking cylinder 62 can move forward and backward through fluid control piston bar 621, rotates thereby drive motion arm 612, realizes ejector rob trolley provided locking, unclamps.
As shown in Figure 7, adjustment cylinder 65 is fixedly mounted on the locking bed 63, between reductor 66 and locking bed 63.The cylinder body 651 of adjustment cylinder 65 is made up of with cylinder mouth 654 cylinder sleeve 652, cylinder bottom 653, and cylinder sleeve 652 is welded on the cylinder bottom 653.Cylinder sleeve 652 and cylinder mouth 654 are connected through bolt, and sealing each other.Piston 655 is installed in the cylinder body 651, flange shaft 656 is installed on the piston 655.The flange 657 of flange shaft 656 ends is fixed together through bolt and nut with the flange of output shaft 664 ends of reductor 66.Also be fixed together between the cylinder bottom 653 of adjustment cylinder 65 and the locking bed 63 through bolt and nut.
Offer oil-in 658 and oil-out 659 on the cylinder body 651, oil-in 658 can be exchanged according to push rod direction of motion needs with oil-out 659.Through oil circuit control, can realize relative motion between cylinder body 651 and the piston 655, relatively move thereby promote locking bed 63 relative reductors 66, locking bed 63 drives latch segment 61, ejector rob trolley provided 5, push rod 4 successively, come directly towards 41 moves.The oil circuit of adjustment cylinder 65 is controlled through the solenoid-operated proportional hydraulic valve in the solenoid-operated proportional hydraulic valve platform 7, to adjust top 41 translational speeds reliably.
The translational speed of top 41 should be between per second 0.0015-0.002 rice, and wherein, speed is best between 0.0017-0.0018.Be convenient control, the speed of top 41 can adopt at the uniform velocity, if further improve the quality of production of seamless steel pipe tube wall, can change according to top 41 expanded by heating situation of change control rates.
When the model specification of pipe 1 adjusts, start locking motor 64, drive locking reductor 66, move chute 56 in through the moving locking bed 63 of the telescopic band of output shaft 661, treat that locking bed 63 positions are definite after, close locking motor 64.When same batch of same size pipe 1 bored a hole, the approximate location of arm locking device 6 was constant, carried out the fine position of locking arm 611 by adjustment cylinder 65.When the constant perforation procedure of pipe 1 specification, push rod 4 is installed on ejector rob trolley provided 5, ejector rob trolley provided 5 will motion back and forth on dolly support 55.
Each course of work is following: start vehicle motor 52; Vehicle motor 52 drives reel 57 rotations through dolly reductor 56, advances through the steel wire rope 51 pulling dollies 5 that are wrapped on the reel 57, under the cooperation of vehicle motor 52 encoders again; Dolly 5 is gone to the relevant position, vehicle motor 52 stalls; At this moment, locking cylinder 62 actions 613 are rotated through piston rod 621 pull operation arms 612 around the shaft, thereby make locking arm 611 rotate, and locking arm 611 rotations put in place.Start roll 2, and use blank pushing machine that pipe 1 is pushed in the roll 2, roll 2 drives pipe 1 and advances.After treating the top 41 roof pressure pipes 1 of push rod 4; Top 41 is heated simultaneously and heats up and expansion, adjusts cylinder 65 actions this moment, under the control of solenoid-operated proportional hydraulic valve 7; Oil-in 658 oil-feeds; Oil-out 659 is fuel-displaced, and cylinder body 651 slowly moves to flange 657 directions, thereby drives locking bed 63 and the latch segment 61 that is installed on the locking bed 63 moves after slowly.On the latch segment 61 locking arm 611 after reduce coupling mechanism force when moving to locating piece 54; And this moment since pipe 1 through the roll-force that comes directly towards 41, push rod 4 and ejector rob trolley provided 5 has transmitted roll 2; Therefore locating piece 54 is with locking arm 611 same moved further; With the locking state between maintenance and the locking arm 611, balance roll-force.Top 41 on ejector rob trolley provided 5, push rod 4 and the push rod 4 is moved after roll-force promotes down, thereby moves after making top 41 in pipe 1 punched areas, and the invariant position of pipe 1 perforation moulding, then comes directly towards 41 and after pipe 1 is bored a hole the position of moulding, moves.Because top 41 is a cone; The top is moved the external diameter that must cause in the position of pipe 1 perforation moulding after 41 and is reduced, and in the operation of rolling top 41 expanded by heating, it is big that external diameter becomes; According to moving speed behind the top of setting 41; Can make top 41 since after move that the external diameter that causes in the position of pipe 1 perforation moulding reduces with top 41 because the external diameter increase of expanded by heating is cancelled out each other, thereby make top 41 constant at the external diameter of the position of pipe 1 perforation moulding, guaranteed the perforation quality of pipe 1.
Beneficial effect of the present invention is that top 41 can be moved along pipe 1 moving direction among the present invention in pipe 1 perforation procedure, thereby reduces the external diameter of top 41 in the pipe 1 perforation forming area; With the compensation top 41 external diameter value added that expanded by heating causes in pipe 1 perforation procedure; Make in pipe 1 perforation forming area the external diameter of top 41 keep stablizing constant, constant with the hollow billet internal diameter that guarantees pipe 1 perforation moulding, thus improve the quality and the stability of pipe 1 moulding hollow billet; Improve pipe 1 perforation qualification rate; Reduce following process, increase work efficiency, reduce production costs.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching of under the situation that does not break away from appended scope of the present invention that claim disclosed of the present invention and spirit, being done, and all belong within the protection domain of claim of the present invention.
Claims (3)
1. position, a piercing mill of seamless steel tube top comprises push rod and ejector rob trolley provided at line adjusting device, and said push rod one end is the top; Said top is a cone, and said cone border line is the straight line that two has the transition arcs line, the said push rod other end be installed in said ejector rob trolley provided on; It is characterized in that; Also comprise locking device, the said locking device latched position of said ejector rob trolley provided dependence is in said top during the pipe of roof pressure seamless steel pipe; Said locking device can move said ejector rob trolley provided latched position along said pipe moving direction, make said push rod by roll-force with said ejector rob trolley provided move.
2. position, piercing mill of seamless steel tube as claimed in claim 1 top is characterized in that at line adjusting device said locking device comprises:
Locking bed, said locking bed are slidingly mounted on the said ejector rob trolley provided support;
Latch segment, said latch segment comprises rotating shaft, locking arm and motion arm, and said latch segment is installed on the said locking bed through said rotating shaft, and said locking arm leans the said ejector rob trolley provided locating piece that is provided with of going up;
Locking cylinder, said locking cylinder are pivoted on the said locking bed, and the piston rod of said locking cylinder pivots and connects said motion arm;
Locking motor, said locking motor is connected with reductor, and said locking motor and reductor all are fixedly mounted on the said ejector rob trolley provided support;
The adjustment cylinder, the cylinder body of said adjustment cylinder is fixedly mounted on the said locking bed, and the piston rod of said adjustment cylinder connects the output shaft of said reductor.
3. position, piercing mill of seamless steel tube as claimed in claim 2 top is characterized in that at line adjusting device said locking device also comprises the solenoid-operated proportional hydraulic valve, and said adjustment cylinder carries out fluid control through said solenoid-operated proportional hydraulic valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110440834.0A CN102513359B (en) | 2011-12-23 | 2011-12-23 | Seamless steel tube perforator piercing point on-line regulating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110440834.0A CN102513359B (en) | 2011-12-23 | 2011-12-23 | Seamless steel tube perforator piercing point on-line regulating device |
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| CN102513359A true CN102513359A (en) | 2012-06-27 |
| CN102513359B CN102513359B (en) | 2014-03-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174459A (en) * | 2014-09-03 | 2014-12-03 | 成都光华科技发展有限公司 | Nondestructive dismounting structure of speed reducer of roller press |
| CN105750338A (en) * | 2016-03-09 | 2016-07-13 | 太原重工股份有限公司 | Detection device for thrusting trolley, puncher and control method for thrusting trolley |
| 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 |
| CN111167863A (en) * | 2019-12-30 | 2020-05-19 | 太原重工股份有限公司 | Ejector rod trolley mechanism control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104174459A (en) * | 2014-09-03 | 2014-12-03 | 成都光华科技发展有限公司 | Nondestructive dismounting structure of speed reducer of roller press |
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| CN105750338A (en) * | 2016-03-09 | 2016-07-13 | 太原重工股份有限公司 | Detection device for thrusting trolley, puncher and control method for thrusting trolley |
| 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 |
| CN111167863A (en) * | 2019-12-30 | 2020-05-19 | 太原重工股份有限公司 | Ejector rod trolley mechanism control system |
| CN111167863B (en) * | 2019-12-30 | 2021-10-19 | 太原重工股份有限公司 | Ejector rod trolley mechanism control system |
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| CN102513359B (en) | 2014-03-19 |
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