CN105057360A - Continuous-rolling retained mandrel support rack - Google Patents
Continuous-rolling retained mandrel support rack Download PDFInfo
- Publication number
- CN105057360A CN105057360A CN201510429476.1A CN201510429476A CN105057360A CN 105057360 A CN105057360 A CN 105057360A CN 201510429476 A CN201510429476 A CN 201510429476A CN 105057360 A CN105057360 A CN 105057360A
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- China
- Prior art keywords
- backing roll
- roll structure
- plug
- mandrel
- distance
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Abstract
The invention discloses a continuous-rolling retained mandrel support rack. The continuous-rolling retained mandrel support rack comprises a mandrel of which the central axis is horizontally arranged, and is characterized in that a first back-up roll structure and a second back-up roll structure, which are used for clasping or releasing the mandrel and adopt the same structure, are respectively arranged at the left end and the right end of the mandrel in the length direction of the mandrel, the first back-up roll structure consists of three back-up rolls, every two of which form a 120-degree included angle, and the three back-up rolls are all externally tangent with the mandrel. Through the adoption of the structure, the mandrel is supported by the back-up roll structures, and the cylindrical surfaces, in contact with the mandrel, of the back-up rolls are inwardly concave arc surfaces, so that the mandrel can be well propped, the concentricity between the mandrel and roll holes is guaranteed, bouncing caused by the dead weight of the mandrel and impact in the rolling process is avoided, and the mandrel is protected against damage caused by surface collision between the mandrel and the rolls.
Description
Technical field
The present invention relates to a kind of retained mandrel for continuous rolling frames, particularly relate to a kind of compact conformation, centering leads accurate retained mandrel for continuous rolling frames.
Background technology
MPM tube rolling mill is in the operation of rolling, plug is in the exposed pass being made up of continuous rolling mill roller, because retained mandrel is long rod type component, because the impact in plug deadweight and the operation of rolling brings spring, the concentricity of plug and roll pass is made to there is very large fluctuation, and fluctuation will make more greatly mandrel surface touch roll to bring damage to plug, for the problems referred to above, need to study a kind of device and solve the above problems.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of retained mandrel for continuous rolling frames, has compact conformation, centering leads accurate feature.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of retained mandrel for continuous rolling frames, comprise the horizontally disposed plug of central axis, its innovative point is: along the two ends, left and right of plug on the length direction of described plug being respectively arranged with the first backing roll structure and the second backing roll structure of holding or unclamping described plug tightly, described first backing roll structure is identical with described second backing roll structure, described first backing roll structure is three backing roll compositions between any two in 120 degree of angles, and three described backing rolls are all mutually circumscribed with described plug.
Preferably, the periphery of described backing roll and described core rod touch is the arc surface of indent.
Preferably, the radian of described arc surface is consistent with the radian of described plug.
Preferably, the distance of described first backing roll structure and plug left end equals 1/8 of described plug length.
Preferably, the distance of described second backing roll structure and plug right-hand member equals 1/8 of described plug length.
Preferably, the 3rd backing roll structure and the 4th backing roll structure is provided with between described first backing roll structure and described second backing roll structure, the distance of described 3rd backing roll structure and plug left end equals 7/16 of described plug length, and the distance of described 4th backing roll structure and plug right-hand member equals 7/16 of described plug length.
Preferably, be provided with the 5th backing roll structure between described first backing roll structure and described 3rd backing roll structure, the distance between described 5th backing roll structure and described first backing roll structure equals 1/8 of described plug length.
Preferably, be provided with the 6th backing roll structure between described second backing roll structure and described 4th backing roll structure, the distance between described 6th backing roll structure and described second backing roll structure equals 1/8 of described plug length.
The invention has the advantages that: by adopting said structure, utilize the support of backing roll structure realization to plug, be the arc surface of indent by the periphery of backing roll and core rod touch, thus can be good at propping up plug, ensure the concentricity of plug and roll pass, avoid because the impact in plug deadweight and the operation of rolling brings spring, ensure that mandrel surface touches roll and brings damage to plug.And the distance that the first backing roll structure, the second backing roll locations of structures are arranged on distance plug respective end equals 1/8 of plug length, thus support guide effect is made to reach best.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of a kind of retained mandrel for continuous rolling frames of the present invention;
In figure: 1-plug, 2-first backing roll structure, 21-backing roll, 3-second backing roll structure, 4-the 3rd backing roll structure, 5-the 4th backing roll structure, 6-the 5th backing roll structure, 7-the 6th backing roll structure.
Detailed description of the invention
Retained mandrel for continuous rolling 1 frames of the present invention, comprise the horizontally disposed plug 1 of central axis, along the two ends, left and right of plug 1 on the length direction of plug 1 being respectively arranged with first backing roll structure 2 and the second backing roll structure 3 of holding or unclamping plug 1 tightly, first backing roll structure 2 is identical with the second backing roll structure 3, first backing roll structure 2 is that three backing rolls 21 between any two in 120 degree of angles form, and three backing rolls 21 are all mutually circumscribed with plug 1.
The periphery that above-mentioned backing roll 21 contacts with plug 1 is the arc surface of indent, and the radian of arc surface is consistent with the radian of plug 1, thus adopts the perfection realized with plug 1 to fit.The first above-mentioned backing roll structure 2 equals 1/8 of plug 1 length with the distance of plug 1 left end, second backing roll structure 3 equals 1/8 of plug 1 length with the distance of plug 1 right-hand member, by the position of the first backing roll structure 2 and the second backing roll structure 3 is limited on this position, stress equalization thus ensure the concentricity of plug 1 and roll pass.
In order to strengthen the centering guiding accuracy of backing roll 21 structure, the 3rd backing roll structure 4 and the 4th backing roll structure 5 is provided with between the first backing roll structure 2 and the second backing roll structure 3, the 7/16, four backing roll structure 5 that 3rd backing roll structure 4 and the distance of plug 1 left end equal plug 1 length equals 7/16 of plug 1 length with the distance of plug 1 right-hand member.The distance be provided with between the first backing roll structure 2 and the 3rd backing roll structure 4 between the 5th backing roll structure the 6, five backing roll structure 6 and the first backing roll structure 2 equals 1/8 of plug 1 length.The distance be provided with between the second backing roll structure 3 and the 4th backing roll structure 5 between the 6th backing roll structure the 7, six backing roll structure 7 and the second backing roll structure 3 equals 1/8 of plug 1 length.
By adopting said structure, utilize the support of backing roll 21 structure realization to plug 1, be the arc surface of indent by the periphery that backing roll 21 contacts with plug 1, thus can be good at propping up plug 1, ensure the concentricity of plug 1 and roll pass, avoid and to conduct oneself with dignity because of plug 1 and impact in the operation of rolling brings spring, guarantee plug 1 surface is touched roll and is brought damage to plug 1.And the distance that the first backing roll structure 2, second backing roll structure 3 position is arranged on distance plug 1 respective end equals 1/8 of plug 1 length, thus support guide effect is made to reach best.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and non-limiting technical scheme, those of ordinary skill in the art is to be understood that, those are modified to technical scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (8)
1. a retained mandrel for continuous rolling frames, comprise the horizontally disposed plug of central axis, it is characterized in that: along the two ends, left and right of plug on the length direction of described plug being respectively arranged with the first backing roll structure and the second backing roll structure of holding or unclamping described plug tightly, described first backing roll structure is identical with described second backing roll structure, described first backing roll structure is three backing roll compositions between any two in 120 degree of angles, and three described backing rolls are all mutually circumscribed with described plug.
2. a kind of retained mandrel for continuous rolling frames as claimed in claim 1, is characterized in that: the periphery of described backing roll and described core rod touch is the arc surface of indent.
3. a kind of retained mandrel for continuous rolling frames as claimed in claim 2, is characterized in that: the radian of described arc surface is consistent with the radian of described plug.
4. a kind of retained mandrel for continuous rolling frames as claimed in claim 1, is characterized in that: the distance of described first backing roll structure and plug left end equals 1/8 of described plug length.
5. a kind of retained mandrel for continuous rolling frames as claimed in claim 1, is characterized in that: the distance of described second backing roll structure and plug right-hand member equals 1/8 of described plug length.
6. a kind of retained mandrel for continuous rolling frames as claimed in claim 1, it is characterized in that: between described first backing roll structure and described second backing roll structure, be provided with the 3rd backing roll structure and the 4th backing roll structure, the distance of described 3rd backing roll structure and plug left end equals 7/16 of described plug length, and the distance of described 4th backing roll structure and plug right-hand member equals 7/16 of described plug length.
7. a kind of retained mandrel for continuous rolling frames as claimed in claim 6, it is characterized in that: be provided with the 5th backing roll structure between described first backing roll structure and described 3rd backing roll structure, the distance between described 5th backing roll structure and described first backing roll structure equals 1/8 of described plug length.
8. a kind of retained mandrel for continuous rolling frames as claimed in claim 6, it is characterized in that: be provided with the 6th backing roll structure between described second backing roll structure and described 4th backing roll structure, the distance between described 6th backing roll structure and described second backing roll structure equals 1/8 of described plug length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510429476.1A CN105057360A (en) | 2015-07-21 | 2015-07-21 | Continuous-rolling retained mandrel support rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510429476.1A CN105057360A (en) | 2015-07-21 | 2015-07-21 | Continuous-rolling retained mandrel support rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105057360A true CN105057360A (en) | 2015-11-18 |
Family
ID=54486996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510429476.1A Pending CN105057360A (en) | 2015-07-21 | 2015-07-21 | Continuous-rolling retained mandrel support rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105057360A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121338A (en) * | 1982-06-03 | 1983-12-21 | Innocenti Santeustacchio Spa | Improvements in press piercing mills |
| JPS63220910A (en) * | 1987-03-11 | 1988-09-14 | Sumitomo Metal Ind Ltd | Lubricating method for mandrel bar |
| JPH06511202A (en) * | 1992-04-15 | 1994-12-15 | インセ・イノセンティ・エンジニアリング・エス・ピー・エー | Rolling stand for general rolling mills with three or more adjustable driven rolls |
| CN202343558U (en) * | 2011-11-29 | 2012-07-25 | 洛阳璋泰非标机械有限公司 | Positioning and locking device of fixed mandril |
| CN203750992U (en) * | 2013-12-19 | 2014-08-06 | 太原磬泓机电设备有限公司 | Two-roller four-stand continuous rolling mill set |
| CN204208903U (en) * | 2014-09-30 | 2015-03-18 | 浙江中星钢管机械有限公司 | A kind of steel pipe detent mechanism of cold pilger mill rolling center |
| CN204912276U (en) * | 2015-07-21 | 2015-12-30 | 江苏华菱锡钢特钢有限公司 | Tandem rolling retained mandrel supports frame |
-
2015
- 2015-07-21 CN CN201510429476.1A patent/CN105057360A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121338A (en) * | 1982-06-03 | 1983-12-21 | Innocenti Santeustacchio Spa | Improvements in press piercing mills |
| JPS63220910A (en) * | 1987-03-11 | 1988-09-14 | Sumitomo Metal Ind Ltd | Lubricating method for mandrel bar |
| JPH06511202A (en) * | 1992-04-15 | 1994-12-15 | インセ・イノセンティ・エンジニアリング・エス・ピー・エー | Rolling stand for general rolling mills with three or more adjustable driven rolls |
| CN202343558U (en) * | 2011-11-29 | 2012-07-25 | 洛阳璋泰非标机械有限公司 | Positioning and locking device of fixed mandril |
| CN203750992U (en) * | 2013-12-19 | 2014-08-06 | 太原磬泓机电设备有限公司 | Two-roller four-stand continuous rolling mill set |
| CN204208903U (en) * | 2014-09-30 | 2015-03-18 | 浙江中星钢管机械有限公司 | A kind of steel pipe detent mechanism of cold pilger mill rolling center |
| CN204912276U (en) * | 2015-07-21 | 2015-12-30 | 江苏华菱锡钢特钢有限公司 | Tandem rolling retained mandrel supports frame |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151118 |