CN207386163U - Double oil cylinder controllable type three rolls holding unit mechanisms - Google Patents
Double oil cylinder controllable type three rolls holding unit mechanisms Download PDFInfo
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- CN207386163U CN207386163U CN201721265651.9U CN201721265651U CN207386163U CN 207386163 U CN207386163 U CN 207386163U CN 201721265651 U CN201721265651 U CN 201721265651U CN 207386163 U CN207386163 U CN 207386163U
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Abstract
The utility model belongs to seamless steel tube production chain appliance technology more particularly to a kind of double oil cylinder controllable type three rolls holding unit mechanisms.The utility model discloses double oil cylinder controllable type three rolls holding unit mechanisms, including the first oil cylinder and the second oil cylinder, the output terminal of second oil cylinder, which is connected with, embraces roller attachment device, the core attachment device of embracing includes first armful of core, second armful of core and the 3rd armful of core, the connector of first armful of core of connection, second armful of core and the 3rd armful of core is further included, described first armful of core, second armful of core and the 3rd armful of core can hold plug tightly under the drive of the first oil cylinder.The beneficial effects of the utility model are：The minimum jitter as far as possible of steel pipe can be controlled, ensures the even running of equipment, reduces the vibrations abrasion of equipment, is conducive to extend the service life of equipment.
Description
Technical field
The utility model belongs to seamless steel tube production chain appliance technology more particularly to a kind of double three rollers of oil cylinder controllable type
Embrace core mechanism.
Background technology
Roller mill backstage is substantially using cylinder form at present, and the pipe in mill milling is revolved in operation of rolling high speed
It produces and, its whipping is excessive in order to prevent, influences normally to roll, so be all added on limitation using guide tube form substantially, allows pipe
Completion can smoothly be rolled.After the completion of rolling, then sent out by upgrading roller-way.Due to the guide tube hole size of each specification
It is fixed, so certain gap must be reserved between the outer diameter of guide tube hole size and the steel pipe of rolling, otherwise steel pipe
Even if completion can be rolled smoothly, can not also be sent out.If gap is stayed too much, steel pipe will easily be got rid of in the operation of rolling
Dynamic, gap is bigger, and whipping amplitude is bigger, is more unfavorable for controlling steel tube inner hole quality；Gap is stayed smaller, and steel pipe rolling is complete
It is just more difficult to send out into rear.Particularly when there is slight non-triangle, can not even more it send out.In rolling process, steel pipe is at a high speed
With static guide tube sliding friction can occur for rotation, and when producing thin-wall tube, this force of sliding friction is plastically deformed more than steel pipe
During required power, steel pipe, which is just present with, rolls torsion phenomenon, influences the surface quality of steel pipe.Due to the size of guide tube endoporus be it is fixed,
So when changing specification every time, it is required for replacing corresponding specification guide tube.Since guide tube endoporus and the steel pipe rolled exist
Larger gap so being susceptible to whipping phenomenon in the operation of rolling, when high-speed rotating steel pipe whipping gets up, is got rid of
Dynamic dynamics is very big, is thus very easy to the vibrations abrasion for causing guide tube axis pin or even the pedestal by entire milling train backstage
Lower margin is got rid of and must be loosened.
The content of the invention
The purpose of this utility model is that solve the problems, such as techniques discussed above, providing a kind of can control to the greatest extent may be used for steel pipe
Energy minimum jitter, steel tube inner hole quality is controlled so as to reach, and thin-wall tube is also not easy the situation for being rolled torsion occur, saves and changes
During specification, the quality time of guide tube is replaced, improves production efficiency, ensure the even running of equipment, reduce the vibrations mill of equipment
Damage, is conducive to extend double oil cylinder controllable type three rolls holding unit mechanisms of the service life of equipment, and technical solution is as follows：
Double oil cylinder controllable type three rolls holding unit mechanisms, which is characterized in that including the first oil cylinder and the second oil cylinder, described second
The output terminal of oil cylinder, which is connected with, embraces roller attachment device, and the roller attachment device of embracing includes first armful of roller, second armful of roller and the 3rd armful
Roller, further includes first armful of roller of connection, the connector of second armful of roller and the 3rd armful of roller, described first armful of roller, second armful of roller and the
Three armfuls of rollers can hold steel pipe tightly under the drive of the first oil cylinder；The output terminal of first oil cylinder, which is connected with, embraces core attachment device,
The core attachment device of embracing includes first armful of core, second armful of core and the 3rd armful of core, further includes first armful of core of connection, second armful of core
With the connector of the 3rd armful of core, described first armful of core, second armful of core and the 3rd armful of core can be to cores under the drive of the first oil cylinder
Stick is held tightly.
Preferred embodiment is that described first armful of roller, second armful of roller and the 3rd armful of roller form equilateral triangle when holding steel pipe tightly
Shape.
Double oil cylinder controllable type three rolls holding unit mechanisms provided by the utility model, when in use, the first oil cylinder drive the
One armful of core, second armful of core and the 3rd armful of core can complete the holding to plug, can prevent the bounce of plug, cause the damage of steel pipe
Wound.The amplitude of holding can be adjusted by the first oil cylinder according to different plug models simultaneously, without replacing plug.
It can be the holding completed to steel pipe that second oil cylinder, which drives first armful of roller, second armful of roller and the 3rd armful of roller, can control steel pipe
Minimum jitter as far as possible controls steel tube inner hole quality so as to reach, and thin-wall tube is also not easy the situation for being rolled torsion occur.Simultaneously
Holding amplitude can be adjusted according to the model of different steel pipes in second oil cylinder, when changing specification so as to save, replace guide tube
Quality time, improve production efficiency.
The beneficial effects of the utility model are：The minimum jitter as far as possible of steel pipe can be controlled, steel is controlled so as to reach
Pipe orifice quality, thin-wall tube are also not easy to occur being rolled the situation of torsion, save when changing specification, replace the quality time of guide tube,
Production efficiency is improved, ensures the even running of equipment, reduces the vibrations abrasion of equipment, be conducive to extension equipment uses week
Phase.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model.
Specific embodiment
With reference to Fig. 1 specific illustrative embodiments：
Double oil cylinder controllable type three rolls holding unit mechanisms, including the first oil cylinder 1 and the second oil cylinder 2, second oil cylinder 2 it is defeated
Outlet, which is connected with, embraces roller attachment device, and the roller attachment device of embracing includes first armful of roller, 3, second armfuls of rollers 4 and the 3rd armful of roller 5, also
Connector 6 including connection first armful of roller, 3, second armfuls of rollers 4 and the 3rd armful of roller 5, described first armful of roller, second armful of roller and the 3rd
Steel pipe can be held tightly under the drive of the first oil cylinder by embracing roller；The output terminal of first oil cylinder 1, which is connected with, embraces core attachment device, institute
State embrace core attachment device include first armful of core, 7, second armfuls of cores 8 and the 3rd armful of core 9, further include connection first armful of core, second armful
The connector of core and the 3rd armful of core, described first armful of core, second armful of core and the 3rd armful of core can be right under the drive of the first oil cylinder
Plug is held tightly.
Preferred embodiment is that described first armful of roller, second armful of roller and the 3rd armful of roller form equilateral triangle when holding steel pipe tightly
Shape.
Three rolls holding unit is controlled using double oil cylinders, and when milling train thin-wall tube, when milling train starts rolled steel tube, the first oil cylinder is lived
Stopper rod is ejected to setting good position.When steel pipe rolling enters in three rolls holding unit, the ejection of the second cylinder piston rod reaches final
The specification needed.First cylinder piston rod first stretches out, and is better in order to preferably control the bounce of plug and steel pipe
Feeding.After steel pipe enters in three rolls holding unit, the second cylinder piston rod is fully extended, reaches the position for almost embracing firm pipe.When
Smaller due to the use of plug when producing thick-walled pipe, the first and second oil cylinders first stretch out simultaneously, and such plug is introduced into three rollers
When embracing core, embrace core and can be very good to control its whipping；When the steel pipe of rolling is prepared to enter into three rolls holding unit, the second cylinder piston rod
It retracts, reach setting embraces roller opening degree.So using the minimum jitter as far as possible that can control steel pipe, so as to reach control
Good steel tube inner hole quality.
It is all to be filled with rolling bearing that three of three rolls holding unit, which are embraced in roller, and in the operation of rolling, steel pipe encounters three and embraces roller
When, embrace roller just can easily rotate at a high speed therewith, so in the operation of rolling, thin-wall tube is also not easy to occur being rolled torsion
Situation.
Three of three rolls holding unit, which embrace roller and three opening degrees for embracing core, to be controlled by hydraulic cylinder, can be according to production steel pipe
Specification regulate the first cylinder piston rod stretching length.When steel pipe rolling is completed, the piston rod of the first and second oil cylinders
It all retracts, reaches maximum opening degree, roller-way rises, and steel pipe just can easily be sent out.It saves when changing specification, replaces guide tube
Quality time improves production efficiency.
Due to whipping of the steel pipe in the operation of rolling, plug and steel pipe are all embraced roller be subject to three and embrace core and tightly limited,
Too quickly whipping strength would not occur, so as to ensure the even running of equipment, reduce the vibrations abrasion of equipment, be conducive to extend
The service life of equipment.
Hollow billet is sent into milling train foreground, is rolled by rolling front roller-way and feeding plug and hollow billet together after the completion of plug is worn in advance
Machine.The hollow forging gone out by mill milling rotates at a high speed milling train backstage three rolls holding unit, speed reducer interstitial hole, until having rolled
Into.After the completion of rolling, hollow forging and plug are sent to by transverse chain bed by rise and fall roller, by entering de- stick work after transverse chain bed
Sequence.
Claims (2)
1. pair oil cylinder controllable type three rolls holding unit mechanism, which is characterized in that including the first oil cylinder and the second oil cylinder, the described second oil
The output terminal of cylinder, which is connected with, embraces roller attachment device, and the roller attachment device of embracing includes first armful of roller, second armful of roller and the 3rd armful of roller,
Further include the connector of first armful of roller of connection, second armful of roller and the 3rd armful of roller, described first armful of roller, second armful of roller and the 3rd armful
Roller can hold steel pipe tightly under the drive of the first oil cylinder；The output terminal of first oil cylinder, which is connected with, embraces core attachment device, described
Core attachment device of embracing include first armful of core, second armful of core and the 3rd armful of core, further include first armful of core of connection, second armful of core and the
The connector of three armfuls of cores, described first armful of core, second armful of core and the 3rd armful of core can embrace plug under the drive of the first oil cylinder
Tightly.
2. oil cylinder controllable type three rolls holding unit mechanisms as described in claim 1 double, which is characterized in that first armful of roller, the
Two armfuls of rollers and the 3rd armful of roller form equilateral triangle when holding steel pipe tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721265651.9U CN207386163U (en) | 2017-09-29 | 2017-09-29 | Double oil cylinder controllable type three rolls holding unit mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721265651.9U CN207386163U (en) | 2017-09-29 | 2017-09-29 | Double oil cylinder controllable type three rolls holding unit mechanisms |
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| Publication Number | Publication Date |
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| CN207386163U true CN207386163U (en) | 2018-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721265651.9U Active CN207386163U (en) | 2017-09-29 | 2017-09-29 | Double oil cylinder controllable type three rolls holding unit mechanisms |
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| Country | Link |
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| CN (1) | CN207386163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597848A (en) * | 2017-09-29 | 2018-01-19 | 浙江明贺钢管有限公司 | Double oil cylinder controllable type three rolls holding unit mechanisms |
-
2017
- 2017-09-29 CN CN201721265651.9U patent/CN207386163U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597848A (en) * | 2017-09-29 | 2018-01-19 | 浙江明贺钢管有限公司 | Double oil cylinder controllable type three rolls holding unit mechanisms |
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