CN100488652C - Feeding device and method for rolled pieces - Google Patents
Feeding device and method for rolled pieces Download PDFInfo
- Publication number
- CN100488652C CN100488652C CNB2004100641628A CN200410064162A CN100488652C CN 100488652 C CN100488652 C CN 100488652C CN B2004100641628 A CNB2004100641628 A CN B2004100641628A CN 200410064162 A CN200410064162 A CN 200410064162A CN 100488652 C CN100488652 C CN 100488652C
- Authority
- CN
- China
- Prior art keywords
- feed
- backstop
- transmission device
- feed arrangement
- rolled piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/02—Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/06—Pushing or forcing work into pass
Abstract
The invention relates to a mandrel structure of a seamless pipe mill push rod, comprising a stop dog capable of moving in the feed direction for transferring a feed movement to a hollow blank, a push rod composing the stop dog, and at least two transmission gears of the same type disposed fore-and-aft in the feed direction for moving the push rod.
Description
Technical field
The present invention relates to a kind of feed arrangement and a kind of method that is used for the rolled piece feeding that is used for rolled piece, especially a kind of feed arrangement that is used for the push rod of a seamless-tube rolling mill.
Background technology
In order to make rolled piece irrespectively realize operation of rolling step by milling train and with the active force that is applied to by work roll on the rolled piece equably, in milling train, by feed arrangement rolled piece is pushed in the milling train usually.For example when rolling seamless pipe, by the backstop on the end that is arranged on the core bar that is inserted into hollow ingot hollow ingot is pushed in the milling train usually.
For with intermediate products, for example a hollow ingot passes the milling method that milling train moves by a feed arrangement, begin with the location of intermediate products usually in the milling train outside.Make one to contact with rolled piece then in the backstop that movably is used on the direction of feed feed motion is delivered on the rolled piece.If can simultaneously a core bar be injected hollow ingot at this rolling hollow ingot.This point is preferably in the quick process and realizes.Make intermediate products enter milling train and contact by the backstop feeding with the working roll of milling train.Must at first make intermediate products feeding on a feeding distance at this milling train that is arranged on milling train direction of feed rear end for working roll. just follow rolling intermediate products then, for example for so-called pipe, backstop must make feed speed and the centripetal force feeding (impulse stroke) of intermediate products to determine during rolling.
The quality of rolled products directly depends on centripetal force that is applied by feed arrangement and the feed speed that is produced. therefore very high requirement has been proposed in centripetal force and the feed motion that is produced. and feeding must not be subjected to by an operation of rolling influence constant speed of generation and constant active force along the longitudinal force of intermediate products passback.Therefore the transmission device that produces feeding during rolling must fix and formation rigidly especially.For example transmission device must bear pulling force up to several tons when rolling hollow ingot, and the feed speed that is produced is changed.
Except requirement, also require to carry according to short especially cadence time to the transmission device of feed arrangement.Therefore be desirably in to as far as possible promptly realize after the operation of rolling finishes intermediate products on working roll traverse feed and the backhaul of backstop so that accept new intermediate products.Therefore known feeding is rolling to have the fast moving that special mechanism is used for backstop.These mechanisms partly are made of auxiliary drive independently.Transmission device not only will satisfy the requirement of intensity and rigidity but also will satisfy the constant requirement of feed speed, also will allow the backstop fast moving, for example has a quick process, and this is very bothersome.
The feed arrangement that is used for hollow ingot by especially known two frame modes in the practice. first kind of structure has a unique pinion drive, it acts at the tooth bar on the push rod. and the distance between pinion drive and the milling train is slightly larger than the double length for the treatment of rolling hollow ingot. and this distance is provided by core bar, it must keep the beginning of the course of work in a position, it allows to add between core bar tip and milling train treats rolling hollow ingot.The core bar that then will equal hollow ingot length substantially injects hollow ingot (feeding length approximates hollow ingot length) in first feed motion.In second feed motion, make hollow ingot be fed into working roll and be pushed over roll gap (feeding distance :) greater than one times hollow ingot length by a backstop that is positioned on the core bar end.The whole feeding of first structural change is exerted one's influence by the acting in conjunction of pinion drive and tooth bar hereto. so tooth bar must have the length greater than hollow ingot length twice.The structure length that makes whole feed arrangement thus is greater than four times of hollow ingot length.
The defective of this known first structure also exists pinion drive and milling train with bigger distance (greater than twice hollow ingot length) to be set except structure length is long. along with increase is inclined in the vibration of the increase push rod of distance.The vibration of push rod and the core bar that is fixed on this push rod bring adverse influence to the quality of rolled products.Produce with the speed of determining by a motor for the whole feeding of known structure in addition.This causes oversize cadence time.
For the structure length that reduces this feed arrangement is advised, movably the feeding of backstop realizes by two different transmission devices.Make core bar be created in feed motion in the hollow ingot by an auxiliary drive that constitutes by quick process.This motion can realize with higher speed.And then the insertion of core bar realizes that the push rod backstop position and the coupling of the bearing that movably has tooth bar join.Hollow ingot is realized the feeding of working roll and the hollow ingot pinion on moving during the operation of rolling (impulse stroke) acts on removable bearing by one tooth bar.Different with first structural change, this second structural change allows backstop to move with different speed, therefore can realize short cadence time.But this second structure has a very bothersome project organization. this in addition structural change also is subject to vibrate very much.The movably bearing of maintenance push rod backstop scope can make this scope work and discharge.This point can only realize the structure of a rigidity with the construction expenditure of obvious increase.Certainly for the structure of rigidity by this movably bearing make vibration import push rod and core bar, vibration is with the quality of influence of rolled product.
The high resiliency of this device that causes except high construction expenditure with by structure and the bad positioning accuracy of core bar that causes thus, movably the bearing engaging mechanism is subject to disturb and wear and tear.Bi Yao locking process has stoped further optimization cadence time in addition.
Summary of the invention
Therefore the objective of the invention is, propose a kind of feed arrangement and a kind of method that is used for the rolled piece feeding that is used for rolled piece, they avoid the technological deficiency of prior art, and do not increase structural expense.
According to the present invention, a kind of feed arrangement that is used for rolled piece is proposed, have: the backstop that can on direction of feed, move, be used for a kind of feed motion is delivered to rolled piece, a fixed body that is used for backstop, at least two front and back transmission devices that be provided with, same type on direction of feed are used to make fixed body to move.
Basic thought of the present invention is, moves in order to make backstop, is furnished with the transmission device of at least two same types that are provided with before and after on direction of feed.The quantity of transmission device and the mutual distance of consequent transmission device have been determined the appearance and size of backstop fixed body, i.e. the length of feed arrangement, and transmission device exceeds the position of leaving milling train backstop farthest with this length.The increase of the minimizing of the length of fixed body, for example push rod and transmission device quantity is proportional, therefore can realize the feed arrangement of the planform of a weak point.The length that is used for the fixed body of backstop by minimizing improves the rigidity of feed arrangement.The quality of avoiding vibrating the raising rolled products that realizes thus.
The uniformity of transmission device makes that structure member to be moved is transferred to next transmission device easily from a transmission device, reduces structural expense thus.Although but the identical transmission device of type also can produce different feed speeds.Avoid making a transmission device must be suitable for producing different feed speeds thus and also have a bothersome structure thus.Give up the mechanism that is subject to disturb according to feed arrangement of the present invention, for example had the removable bearing of the online structure of coupling.
Especially in a seamless-tube rolling mill, produce the core bar motion by a device with feed arrangement.For other rolled piece, can have equally according to feed arrangement structure of the present invention as the feed arrangement of slab or rolled pipe reprocessing.
The backstop that a feed motion is delivered on the rolled piece especially is made of the surface with end in contact behind rolled piece on the direction of feed according to of the present invention being used for.But the backstop in described scope can consider that also other can be delivered to a feed motion structure member of rolled piece.They for example can be binding clasp or friction gearing.
Especially can be understood as the structure member of feed arrangement as the fixed body of backstop, transmission device can act on these structure members, so that backstop moves on direction of feed.Especially can be understood as transmission device and to make backstop movably produce the structure member of feeding.
According to one of feed arrangement of the present invention favourable expansion structure, described backstop constitutes on the core bar end.Obtain a simple especially structure thus.Especially can be understood as the parts of a feed arrangement as core bar, it enters treats rolling hollow ingot.Described core bar preferably can be rotated to support on the fixed body of backstop. and can connect the parts of an aptamers as fixed body on backstop, this aptamers can make rolled piece push away roll gap fully.
According to a preferred embodiment of the present invention, described backstop is fixed by a push rod.Between backstop and push rod, can be furnished with an aptamers at this. especially also can have a case structure at this push rod.
Described transmission device preferably has pinion, and they and a tooth bar that constitutes on fixed body mesh.Therefore each pinion that is engaged on the tooth bar can be interpreted as a transmission device. can pass through an independently motor-driven respectively at this each pinion.But preferably is furnished with a public motor, its drive transmission, for example pinion.As the transmission device that backstop is moved also can be other linear actuator that is used for the backstop fixed body.For example friction pulley can act on the moving track of fixed body, and gears engaged also can be a hydraulic cylinder in chain.
According to a preferred embodiment of the present invention, described transmission device has motor, and they have different characteristic curves and/or different speed reducing ratio.Can realize different backstop feed speeds thus.Is furnished with a public motor that is used for transmission device according to selectable, a same preferred embodiment of the present invention, it has a characteristic curve, and it can realize the quick process that backstop moves with less action force and higher speed simultaneously with bigger active force and higher precision realization jog.
According to a preferred embodiment of the present invention, is furnished with a kind of flank profil displacement of variation at least one end of tooth bar.Be appreciated that for a change facewidth and tooth depth at this as the flank profil displacement that changes. especially be furnished with narrower, lower flank profil in the end, they are being increased to a definite basic width and base altitude along tooth bar on width and the height. and the flank profil displacement of this variation can make employed pinion be engaged to well on the tooth bar that moves on the pinion.
According to the method that is used for the rolled piece feeding of the present invention, wherein said feed motion is delivered on the rolled piece by a backstop, this method regulation, pass through second transmission device with the first transmission device same type mobile on one second feeding length moving on one first feeding length by one first transmission device for the fixed body of a fixed stop.Transfer fixed body to second transmission device at this first transmission device.In case second transmission device continues to carry out the feeding of fixed body, just can make first transmission device not have active force ground and connect, if it also will be in engagement with the parts (for example tooth bar) of fixed body.Described feeding length preferably directly interconnects.
Be particularly useful for a hollow ingot is inserted into an elongator according to feed arrangement of the present invention with according to the method that is used for the rolled piece feeding of the present invention.
Description of drawings
Describe the present invention in detail below by an embodiment accompanying drawing.In the accompanying drawing:
Fig. 1 schematic side illustrates the state that retracts core bar according to feed arrangement of the present invention fully,
Fig. 2 schematic side illustrates another state according to the device of Fig. 1, and at this state, core bar enters hollow ingot,
Fig. 3 diagrammatic side view is illustrated in during the impulse stroke device according to Fig. 1 and 2,
Fig. 4 schematic side illustrates the tooth bar end of the flank profil displacement with variation.
The specific embodiment
Figure 1 illustrates the feed arrangement 3 that 1. 1 in a milling train that is used for rolling hollow ingot 2 is used for hollow ingot 2 and on direction of feed, be arranged on milling train 1 front.This feed arrangement has a core bar 4.On an end of this core bar 4, constitute a backstop 5, be used for a kind of feed motion is delivered to hollow ingot 2.On this backstop 5, connect an aptamers 6 and a push rod 7 as the fixed body of backstop 5.Is furnished with a tooth bar 8 in the bottom surface of this push rod 7. Transmission device 9 and 10 ground, front and back on direction of feed is provided with.Described transmission device 9 and 10 is by one or more unshowned motor-driven.
For the hollow ingot 2 described push rod 7 that travels forward is moved forward by transmission device 10.The pinion 13 of rotation is engaged on the tooth bar 8 and push rod 7 is moved forward on direction of feed.Entering hollow ingot 2 in the process at this unshowned motor fast with quick process driving pinion 12 and pinion 13. described core bars 4.Described backstop 5 leans on the rear end of hollow ingot on the direction of feed 2.(referring to Fig. 2).
Along with feeding be increased in pinion 12 that tooth bar 8 front ends on the direction of feed arrive transmission device 9. these transmission devices 9 be engaged on the tooth bar 8 and make push rod 7 and make thus core bar 4 march forward to.The rotary speed of unshowned motor is reduced to the slow speed of advancement (referring to Fig. 3) for operation of rolling defined when tooth bar 8 is advanced in pinion 12 engagement. along with the pinion 13 of the continuation transmission device 10 of feed motion breaks away from engagement with tooth bar 8.
Described tooth bar 8 not only can be on the front end but also can have the flank profil displacement of a variation on the rear end.The front end of tooth bar 8 shown in Figure 4. the tooth 20 and 21 with basic rack tooth profile is shown.Mesh with basic rack tooth profile respectively in order to transmit the described pinion 12 of centripetal force and 13.The flank profil displacement that has variation on the pinion in order to make tooth bar 8 be easy to enter into reduces facewidth a and tooth depth b on the preceding extreme direction of tooth bar 8. Tooth 22 and 23 is compared with 21 with tooth 21 has the littler tooth depth and the narrower facewidth (dotting) respectively.Make pinion be easy to engagement thus and advance tooth bar.
Claims (11)
1. feed arrangement that is used for rolled piece has:
-one backstop (5) that can move on direction of feed is used for a kind of feed motion is delivered to rolled piece,
-one fixed body that is used for backstop (5),
-at least two front and back transmission devices (9,10) that be provided with, same type on direction of feed are used to make fixed body to move.
2. feed arrangement as claimed in claim 1 is characterized in that, described backstop (5) is arranged on the end of a core bar (4).
3. feed arrangement as claimed in claim 1 or 2 is characterized in that, described backstop (5) is fixing by a push rod (7).
4. feed arrangement as claimed in claim 1 or 2 is characterized in that, described transmission device (9,10) has the pinion (12,13) with a tooth bar that constitutes (8) engagement on fixed body.
5. feed arrangement as claimed in claim 1 or 2 is characterized in that, each transmission device (9,10) has an independently motor.
6. feed arrangement as claimed in claim 5 is characterized in that, described transmission device (9,10) has motor, and they have different characteristic curves and/or different speed reducing ratio.
7. feed arrangement as claimed in claim 1 or 2 is characterized in that, described at least two transmission devices (9,10) have a public motor.
8. feed arrangement as claimed in claim 4 is characterized in that, has a kind of flank profil displacement of variation at least one end of described tooth bar (8).
9. method that is used for the rolled piece feeding, wherein, described feed motion is delivered on the rolled piece by a backstop and the fixed body of a fixed stop is moving on one first feeding length and mobile on one second feeding length by second transmission device with the first transmission device same type by one first transmission device.
10. application that is used for a hollow ingot is inserted into an elongator as each described feed arrangement in the claim 1 to 8.
11. a method as claimed in claim 9 is used for a hollow ingot is inserted into the application of an elongator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10338938.5A DE10338938B4 (en) | 2003-08-22 | 2003-08-22 | Feed device for rolling stock and method for advancing a rolling stock |
| DE10338938.5 | 2003-08-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1583304A CN1583304A (en) | 2005-02-23 |
| CN100488652C true CN100488652C (en) | 2009-05-20 |
Family
ID=34201972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100641628A Expired - Fee Related CN100488652C (en) | 2003-08-22 | 2004-08-20 | Feeding device and method for rolled pieces |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN100488652C (en) |
| DE (1) | DE10338938B4 (en) |
| IT (1) | ITRM20040413A1 (en) |
| RU (1) | RU2358822C2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2450875C1 (en) * | 2010-12-22 | 2012-05-20 | Открытое акционерное общество "Электростальский завод тяжелого машиностроения" | Roll mill adjustable-speed long mandrel drive |
| CN102773358B (en) * | 2012-07-31 | 2016-03-02 | 福建省晋江市佶龙机械工业有限公司 | A kind of feed arrangement |
| CN102950646B (en) * | 2012-12-04 | 2014-11-26 | 苏州赛琅泰克高技术陶瓷有限公司 | Mold for processing hollow spiral ceramic piece |
| CN103071680B (en) * | 2013-02-06 | 2014-12-31 | 中冶赛迪工程技术股份有限公司 | Pipe jacking machine unit |
| CN103157676A (en) * | 2013-03-29 | 2013-06-19 | 常熟市中钛科技有限公司 | Cogging pipe blank feeding machine |
| CN105436225B (en) * | 2015-12-24 | 2017-12-01 | 无锡市新湖冷拔校直机厂 | A kind of feed arrangement for milling train production system |
| CN106140834B (en) * | 2016-08-18 | 2018-01-05 | 广东科莱博科技有限公司 | A kind of feeding device for milling train |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3129875A1 (en) * | 1980-10-08 | 1982-06-16 | VEB Schwermaschinenbau Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg | Rod driver for rolled stock moving at high speed |
| CN1108974A (en) * | 1993-12-13 | 1995-09-27 | 曼内斯曼股份公司 | Cold pilger mill for rolling long tube block |
| CN2385817Y (en) * | 1999-08-20 | 2000-07-05 | 虞嘉元 | Feeding mechanism for cold pilger mill |
| US6098791A (en) * | 1998-07-14 | 2000-08-08 | Sms Schloemann-Siemag Aktiengesellschaft | Shifting device for rolling stock placed on a roller conveyor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163507A (en) * | 1982-03-25 | 1983-09-28 | Nippon Kokan Kk <Nkk> | Inlet table of bar restraining type mandrel rolling mill |
-
2003
- 2003-08-22 DE DE10338938.5A patent/DE10338938B4/en not_active Expired - Fee Related
-
2004
- 2004-08-18 IT ITRM20040413 patent/ITRM20040413A1/en unknown
- 2004-08-20 RU RU2004125541/02A patent/RU2358822C2/en not_active IP Right Cessation
- 2004-08-20 CN CNB2004100641628A patent/CN100488652C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3129875A1 (en) * | 1980-10-08 | 1982-06-16 | VEB Schwermaschinenbau Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg | Rod driver for rolled stock moving at high speed |
| CN1108974A (en) * | 1993-12-13 | 1995-09-27 | 曼内斯曼股份公司 | Cold pilger mill for rolling long tube block |
| US6098791A (en) * | 1998-07-14 | 2000-08-08 | Sms Schloemann-Siemag Aktiengesellschaft | Shifting device for rolling stock placed on a roller conveyor |
| CN2385817Y (en) * | 1999-08-20 | 2000-07-05 | 虞嘉元 | Feeding mechanism for cold pilger mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1583304A (en) | 2005-02-23 |
| DE10338938A1 (en) | 2005-03-24 |
| ITRM20040413A1 (en) | 2004-11-18 |
| DE10338938B4 (en) | 2016-07-28 |
| RU2004125541A (en) | 2006-02-10 |
| RU2358822C2 (en) | 2009-06-20 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20180820 |