CN203061554U

CN203061554U - Pipe pusher roller die

Info

Publication number: CN203061554U
Application number: CN 201320069318
Authority: CN
Inventors: 肖伟; 穆东; 金强; 王飞
Original assignee: CISDI Engineering Co Ltd
Current assignee: CISDI Engineering Co Ltd
Priority date: 2013-02-06
Filing date: 2013-02-06
Publication date: 2013-07-17
Anticipated expiration: 2023-02-06

Abstract

The utility model relates to a pipe pusher roller die, belongs to the technical field of machinery, and particularly relates to a pipe pusher roller die capable of processing high-precision grooves. The pipe pusher roller die adopts the structure that a gear-shaped half handle with an outer gear is arranged at one end of a roll shaft of a roller bearing support assembly piece; round holes are formed in the corresponding position on a base; so that three telescopic transmission shafts of an external dedicated groove processing machine tool can stretch into the roller die from the outside and can be meshed with the outer gear half handle on the roll shaft through an inner gear half handle to drive the rollers to rotate; then the three rollers can be turned simultaneously through a turning tool of the machine tool; in this way the precision of the processed grooves can be ensured; besides no roller dismantling is needed when the abraded roller die is used for reconditioning the grooves; and the labor intensity of the workers is reduced.

Description

A kind of push-bench roller die

Technical field

The utility model relates to field of mechanical technique, but a kind of push-bench roller die of machining high-precision pass particularly.

Background technology

In the various hot rolled seamless steel tube manufacturing technique methods, pipe pushing technology is a kind of important method wherein, its main processes is, use heating furnace that solid pipe is heated to about 1250 ° of C, by Mannesmann piercing mill pipe is worn into hollow pipe again, in hollow pipe, insert plug then, use Pipe End Throat Machine the hollow pipe head to be pressed on " step " of plug head, pushing tow tooth bar promotion plug and hollow pipe by gear drive passes through a series of roller die then, each roller die inside has been formed the pass of a circle by three passive rolls, by the extruding of roll to the outer surface of hollow pipe, the hollow pipe inner surface is crushed on the plug, tightly fits, and the outer surface of hollow pipe is because the extruding of roll, external diameter is reduced, and wall thickness is thinned.Hollow pipe and the plug finished after make on the top fit together, and are transported to the mandrel bar loosening mill place by roller-way, by mandrel bar loosening mill hollow pipe and plug are rolled, and make between hollow pipe and plug and form the gap, with taking off excellent machine plug are extracted out then.Just can produce the hollow pipe of certain external diameter and wall thickness by above a series of processes.

Push-bench is exactly the employed equipment of pipe pushing technology, by the top bed, and bed foreground, top, roller die, compositions such as pushing tow rackwork.Wherein roller die is one of critical component of push-bench, and its effect is to constitute pass and bear the push pipe roll-force in push pipe, generally adopts the three-roller type structure, has been formed the pass of a sub-circular by three passive rolls.The precision of pass has determined the external diameter of the hollow pipe produced and the precision of wall thickness, and pass is to be processed by roll lathe turning.

Present existing roller die structure, roller die is assemblied by profile rounded cast steel base and 3 roll chocks, in the time of needs turning pass, the roll chock assembling need be taken out from the cast steel base, on lathe, each roll is processed separately, roll chock assembling and cast steel base after will processing then fit together, and form pass by the arc after three Roller Machining; Because the error of independent manufacturing tolerance and follow-up assembling, the pass of formation is not accurate.

The utility model content

The purpose of this utility model just provides a kind of push-bench roller die, it can be processed three rolls under confined state simultaneously in roller die assembling back, guarantees the pass precision that processes, and when using the roller die loaded vehicle pass after the wearing and tearing, need not dismantle roll, reduce working strength of workers.

The purpose of this utility model is to realize by such technical scheme, it includes base and three roll chocks assemblings that are installed on the base, roll chock assembling includes roll shaft and is installed in bearing on the roll shaft respectively, roll, thrust bearing device, described roll chock assembling also includes profile of tooth half catcher and axle head baffle plate, profile of tooth half catcher is enclosed within the afterbody of roll shaft, the external cylindrical surface of its endoporus and roll shaft matches, and by the secondary moment of torsion that transmits of flat key, the outer wall of profile of tooth half catcher is provided with external tooth, the axle head baffle plate is located at the end of profile of tooth half catcher, and by bolt be positioned at profile of tooth and partly take over the roll shaft of endoporus and fix, profile of tooth half catcher is fixed on the roll shaft, and base is provided with three and partly takes over the corresponding through hole that power transmission shaft stretches into that is used for profile of tooth respectively.

Further, described thrust bearing device is enclosed within on the roll shaft, fixes by bolt and roll shaft.

Further, the assembling of described roll chock also includes end cap, and end cap is enclosed within on profile of tooth half catcher, and fixes by bolt and thrust bearing device, and the contact-making surface of partly taking in end cap and profile of tooth is provided with lip packing.

Further, described roll chock assembling also includes intermediate sleeve, intermediate sleeve is enclosed within bearing outer wall, bearing holder (housing, cover) is at the intermediate sleeve outer wall, primary nut is installed on the roll shaft by screw thread, the sidewall card of the sidewall of primary nut and intermediate sleeve lumps together, intermediate sleeve is against on the roll sidewall, end in intermediate sleeve is provided with interior concave ring stage, the other end is provided with outer bulge loop platform, bearing interior concave ring stage and outside between the bulge loop platform, big nut is installed on the interior concave ring stage of intermediate sleeve by screw thread, the sidewall of big nut and bearing card lump together, and bearing are against on the outer bulge loop platform of intermediate sleeve.

Further, described roll chock assembling also includes bearing block, and bearing sleeve is stuck between thrust bearing device and the roll at bearing outer wall.

Owing to adopted technique scheme, the utlity model has following advantage:

The utility model adopts profile of tooth half catcher that the band external tooth is set at an end of the roll shaft of roll chock assembly parts, and the correspondence position at base is offered through hole, three of external dedicated pass machining tool scalable power transmission shafts just can stretch into roller die from the outside like this, and the external tooth of taking over by the internal tooth on the power transmission shaft and profile of tooth half meshes, the rotation of driving roll, the lathe tool of lathe just can be processed three rolls simultaneously simultaneously then.The utility model can be processed three rolls under confined state simultaneously in roller die assembling back, guarantees the precision of the pass that processes, and when using the roller die loaded vehicle pass after the wearing and tearing, need not dismantle roll, reduces working strength of workers.

Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can from practice of the present utility model, obtain instruction.Target of the present utility model and other advantages can realize and obtain by following specification and claims.

Description of drawings

Description of drawings of the present utility model is as follows.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the roller die structural representation;

Fig. 3 is the utility model working state schematic representation.

Among the figure: 1. base; 2. roll chock assembling; 3. roll; 4. bearing block; 5. big nut; 6. primary nut; 7. intermediate sleeve; 8. bearing; 9. roll shaft; 10. thrust bearing device; 11. round nut; 12. end cap; 13. lip packing; 14. profile of tooth half catcher; 15. axle head baffle plate; 16. power transmission shaft.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

A kind of push-bench roller die, three roll chocks that include base 1 and be installed on the base 1 assemble 2, roll chock assembling 2 includes roll shaft 9 and is installed in bearing 8 on the roll shaft 9 respectively, roll 3, thrust bearing device 10, described roll chock assembling 2 also includes profile of tooth and partly takes over 14 and axle head baffle plate 15, profile of tooth is partly taken over 14 afterbodys that are enclosed within roll shaft 9, the external cylindrical surface of its endoporus and roll shaft 9 matches, and by the secondary moment of torsion that transmits of flat key, profile of tooth is partly taken over 14 outer wall and is provided with external tooth, axle head baffle plate 15 is located at profile of tooth and partly takes over 14 end, and by bolt be positioned at profile of tooth partly to take over the roll shaft 9 of 14 endoporus fixing, profile of tooth is partly taken over 14 be fixed on the roll shaft 9, base 1 is provided with three and partly takes over 14 with profile of tooth respectively and corresponding be used for the through hole that power transmission shaft 16 stretches into.

The profile of tooth that the utility model adopts the end at the roll shaft 9 of 2 of roll chock assemblings that the band external tooth is set partly takes over 14, and the correspondence position at base 1 is offered through hole, three of external dedicated pass machining tool scalable power transmission shafts 16 just can stretch into roller die 9 from the outside like this, and partly take over the engagement of 14 external tooth by the internal tooth on the power transmission shaft 16 and profile of tooth, drive roll 3 rotations, the lathe tool of lathe just can be processed three rolls 3 simultaneously simultaneously then.The utility model can be processed three rolls 3 under confined state simultaneously in roller die assembling back, guarantees the precision of the pass that processes, and when using the roller die loaded vehicle pass after the wearing and tearing, need not dismantle roll, reduces working strength of workers.

Described thrust bearing device 10 is enclosed within on the roll shaft 9, and is fixing by bolt and roll shaft 9.

Described roll chock assembling 2 also includes end cap 12, and end cap 12 is enclosed within profile of tooth and partly takes on 14, and fixing with thrust bearing device 10 by bolt, partly takes over 14 contact-making surface in end cap 12 and profile of tooth and is provided with lip packing 13.

Described roll chock assembling also includes intermediate sleeve, intermediate sleeve 7 is enclosed within roll shaft 9 outer walls, bearing 8 is enclosed within intermediate sleeve 7 outer walls, primary nut 6 is installed on the roll shaft 9 by screw thread, the sidewall card of the sidewall of primary nut 6 and intermediate sleeve 7 lumps together, intermediate sleeve 7 is against on roll 3 sidewalls, end in intermediate sleeve 7 is provided with interior concave ring stage, the other end is provided with outer bulge loop platform, bearing 9 interior concave ring stage and outside between the bulge loop platform, big nut 5 is installed in by screw thread on the interior concave ring stage of intermediate sleeve 7, and the sidewall of big nut 5 and bearing 8 cards lump together, and bearing 8 is against on the outer bulge loop platform of intermediate sleeve 7.Intermediate sleeve 7 structures are set between bearing 8 inner rings and roll shaft 9; the inner ring of intermediate sleeve 7 and roll shaft 9 cooperate; the inner ring of the outer ring of intermediate sleeve 7 and bearing 8 cooperates, and when installing and removing roll 3 at every turn, only intermediate sleeve 7 and bearing 8 integral body need be taken off or is loaded onto from rolling 3; and need not do any operation to bearing 8; bearing 8 avoids the dismounting damage, can effectively protect bearing 8, guarantees its precision; simultaneously, the present invention can also reduce to change the workload of roll 3.In the time of needs dismounting roll 3, at first roll chock assembling 2 is taken out from base, after removing thrust bearing device 10, primary nut 6, big nut 5, bearing block 4, intermediate sleeve 7 and bearing 8 respectively, just roll 3 and adapter sleeve 11 overall pulling down from the roll shaft 9 can be changed new roll 3 and adapter sleeve 11 assembly parts.

Described roller die also includes bearing block 4, and bearing block 4 is enclosed within bearing 8 outer walls, is stuck between thrust bearing device 10 and the roll 3.

Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. push-bench roller die, three roll chocks that include base and be installed on the base assemble, roll chock assembling includes roll shaft and is installed in bearing on the roll shaft respectively, roll, thrust bearing device, it is characterized in that: described roll chock assembling also includes profile of tooth half catcher and axle head baffle plate, profile of tooth half catcher is enclosed within the afterbody of roll shaft, the external cylindrical surface of its endoporus and roll shaft matches, and by the secondary moment of torsion that transmits of flat key, the outer wall of profile of tooth half catcher is provided with external tooth, the axle head baffle plate is located at the end of profile of tooth half catcher, and by bolt be positioned at profile of tooth and partly take over the roll shaft of endoporus and fix, profile of tooth half catcher is fixed on the roll shaft, and base is provided with three and partly takes over the corresponding through hole that power transmission shaft stretches into that is used for profile of tooth respectively.

2. a kind of push-bench roller die as claimed in claim 1, it is characterized in that: described thrust bearing device is enclosed within on the roll shaft, fixes by bolt and roll shaft.

3. a kind of push-bench roller die as claimed in claim 2, it is characterized in that: described roll chock assembling also includes end cap, end cap is enclosed within on profile of tooth half catcher, and fixes by bolt and thrust bearing device, and the contact-making surface of partly taking in end cap and profile of tooth is provided with lip packing.

4. a kind of push-bench roller die as claimed in claim 1, it is characterized in that: described roll chock assembling also includes intermediate sleeve, intermediate sleeve is enclosed within bearing outer wall, bearing holder (housing, cover) is at the intermediate sleeve outer wall, primary nut is installed on the roll shaft by screw thread, the sidewall card of the sidewall of primary nut and intermediate sleeve lumps together, intermediate sleeve is against on the roll sidewall, end in intermediate sleeve is provided with interior concave ring stage, the other end is provided with outer bulge loop platform, bearing interior concave ring stage and outside between the bulge loop platform, big nut is installed on the interior concave ring stage of intermediate sleeve by screw thread, the sidewall of big nut and bearing card lump together, and bearing are against on the outer bulge loop platform of intermediate sleeve.

5. a kind of push-bench roller die as claimed in claim 4 is characterized in that: described roll chock assembling also includes bearing block, and bearing sleeve is stuck between thrust bearing device and the roll at bearing outer wall.