CN109396182A - Bar multi wire cutting production line - Google Patents
Bar multi wire cutting production line Download PDFInfo
- Publication number
- CN109396182A CN109396182A CN201811344652.1A CN201811344652A CN109396182A CN 109396182 A CN109396182 A CN 109396182A CN 201811344652 A CN201811344652 A CN 201811344652A CN 109396182 A CN109396182 A CN 109396182A
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- Prior art keywords
- flying shear
- guide groove
- segment guide
- support roller
- bar
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention provides a kind of bar multi wire cutting production line, the bar multi wire cutting production line includes: second segment guide groove before first segment guide groove and 3# flying shear before 3# flying shear；Second segment guide groove is equipped with frequency conversion depressing table before 3# flying shear；The frequency conversion depressing table includes: the support roller of variable-frequency motor and connection variable-frequency motor, the variable-frequency motor is arranged in front of 3# flying shear on the side wall of second segment guide groove, opening is formed with before 3# flying shear between the two side walls of second segment guide groove, the support roller setting is in said opening.The present invention changes situation of the steel in skew of just walking after 3# flying shear cutting of multi-segmentation, improve walking stability, reduce steel toe a possibility that channel is knocked deformation, is finally reached the upper steel the case where causing stifled steel of knocking into the back that prevents to fly out on steel Zhi Dong skirtboard.
Description
Technical field
The present invention relates to steel rolling fields, and in particular to bar multi wire cutting rolling device, i.e., a kind of bar multi wire cutting are raw
Producing line.
Background technique
Hot rolled ribbed bars are commonly called as screw-thread steel, are widely used in the building such as house, bridge, road.Currently, screw-thread steel is
By single line or single branch production, develops into multi-segmentation production, i.e., a major thread steel is cut into more small spiral shells on milling train
Line steel is rolled, and multi-segmentation production is the several times of single line or single branch production efficiency, for example, two cuttings are exactly by a big spiral shell
Line steel is cut into two minor thread steel and is rolled, and a major thread steel is exactly cut into four minor thread steel and carried out by four cuttings
Rolling, theoretically, two cuttings are twice of single line or single branch production efficiency, and four cuttings are the four of single line or single branch production efficiency
Times.
In multi-segmentation production, finished steel is after finishing mill, and transversally cutting Cheng Duozhi steel branch, every steel branch is generally
It is long that rice up to a hundred can be reached, subsequently into 3# flying shear cutting multiple length, longitudinal shear is at tens meters or so of length, subsequently into cold
Bed.After 3# flying shear cutting multiple length, after same cut in channel, it may appear that the steel branch having walking regular in channel after cutting,
And some steel branch after cutting in channel (such as after 3# flying shear after second segment guide groove or other 3# flying shears other positions guide groove)
Irregular walking is swung, this phenomenon greatly affected stability of the steel branch in upper cold bed prepass, be easy to cause skirt
Slab branch knocks into the back stifled steel, the normal traveling of the subsequent steel branch quickly to arrive is influenced, to cause cold bed prepass civil strike steel, shape
At waste product, and influence the production of entire roll line.
In conclusion following problems exist in the prior art: when rolling bar multi-segmentation, finished steel is after 3# flying shear
The problem for skew of walking.
Summary of the invention
The present invention provides a kind of bar multi wire cutting production line, it is therefore an objective to improve 3# shearing divide steel toe after multiple length (steel branch
Head) walking grazing.
For this purpose, the present invention proposes that a kind of bar multi wire cutting production line, the bar multi wire cutting production line include:
After the mm finishing mill unit that is successively connected, Water cooling device, 3# flying shear front guide slot, 3# flying shear, 3# flying shear guide groove and
Cold bed；Bar steel branch realizes multi-segmentation in mm finishing mill unit；Water cooling device is the pipeline configuration that both ends have opening；
3# flying shear front guide slot includes: second segment guide groove before first segment guide groove and 3# flying shear before the 3# flying shear being successively connected；3#
The length of second segment guide groove is greater than the length of first segment guide groove before 3# flying shear before flying shear；First segment guide groove is horn mouth before 3# flying shear
Shape；Second segment guide groove includes: the taper auxiliary guide groove of the leading slot of rectangle and the leading slot of the connection rectangle before 3# flying shear；
The outlet of the leading slot of the rectangle is extend into before 3# flying shear in the entrance of first segment guide groove；
Before 3# flying shear first segment guide groove before 3# flying shear, 3# flying shear second segment guide groove far from 3# flying shear；Before 3# flying shear
One section of guide groove is located at before 3# flying shear and 3# flying shear between second segment guide groove；
Second segment guide groove has two side walls and the bottom wall that is arranged between two side walls before 3# flying shear, second before 3# flying shear
Section guide groove is equipped with frequency conversion depressing table；The frequency conversion depressing table includes: the support roller of variable-frequency motor and connection variable-frequency motor, institute
It states variable-frequency motor to be arranged in front of 3# flying shear on the side wall of second segment guide groove, shape between the two side walls of second segment guide groove before 3# flying shear
At there is opening, the support roller is arranged in said opening, second segment guide groove before the parallel 3# flying shear of the axis of the support roller
Bottom wall.
Further, the support roller is arranged on the side wall of leading slot of the rectangle.
Further, the number of the support roller is two, the respectively support roller of the support roller of head end and tail end, head end
Support roller between 3# flying shear and the support roller of tail end.
Further, the spacing of two support rollers is 1 meter.
Further, the support roller distance 3# flying shear shear centre of head end is 1550mm to 1750mm.
Further, the leading edge of leading slot of the support roller of head end apart from rectangle is 450mm to 550mm.
Further, second segment guide groove, 3# first segment guide groove and 3# flying shear after are connected with after 3# flying shear after 3# flying shear in turn
First segment guide groove is bell shape after flying shear, and second segment guide groove is equipped with the frequency conversion depressing table after 3# flying shear, after 3# flying shear
The length of second segment guide groove is ten times or more of second segment guide groove before 3# flying shear.
Further, mm finishing mill unit has the groove for propping up bar steel four line cuttings, and second segment guide groove conveys before 3# flying shear
Four bar steel branch.
Further, the size of the support roller is ф 180mm × 380mm；The model of the variable-frequency motor:
YVP100L2-4, P=2.2KW；The kind of drive: AC frequency conversion, the continuous Positive work of driven separately.
Further, the motor model that 3# flying shear uses is Z355-6C, the cutting edge line of rated power 355KW, 3# flying shear
Speed is more than bar steel branch speed of service 2--10%, and the radius of gyration: 505mm, bar steel branch enter second segment guide groove before 3# flying shear
Taper auxiliary guide groove speed be 10--18m/s, bar steel branch shearing after length be 84 to 108m.
The present invention using the addition speed of newly-increased (frequency conversion) support roller to the steel branch head after cutting multiple length with powerful support,
To improve walking linearity and stability of the steel branch after cutting.The steel that the present invention changes multi-segmentation is passing through the cutting of 3# flying shear
The situation for skew of just walking afterwards, improves walking stability, reduces steel toe a possibility that channel is knocked deformation, finally reach
To prevent to fly out on steel Zhi Dong skirtboard knock into the back a upper steel cause stifled steel the case where.
Detailed description of the invention
Fig. 1 is the 3# flying shear of bar multi wire cutting production line of the invention and the structural schematic diagram of front and back guide groove；
Fig. 2 is the schematic view of the front view of second segment guide groove before 3# flying shear of the invention；
Fig. 3 is the overlooking structure diagram of second segment guide groove before 3# flying shear of the invention；
Fig. 4 is the overall structure diagram of bar multi wire cutting production line of the invention.
Drawing reference numeral explanation:
1, first segment guide groove before 3# flying shear；2, second segment guide groove before 3# flying shear；21, slot is dominated；22, taper assists guide groove；
3, the direction of bar steel Zhi Hangjin；4,3# flying shear；25, frequency conversion depressing table；251, variable-frequency motor；252, it supports
Roller；253, frequency conversion roll surface horizontal line；5, first segment guide groove after 3# flying shear；6, second segment guide groove after 3# flying shear；7, Water cooling fills
It sets；8, mm finishing mill unit；9, cold bed.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
It is bright.
1, principle and case study:
In daily production, after the roll line of applicant occurs frequently in 3# flying shear cutting multiple length, the channel after same cut
It is interior, it may appear that the steel branch having walking regular in channel after cutting, and some steel branch after cutting put in channel by irregular walking
Dynamic problem.
For this problem, applicant does not understand after repeated thinking.Because being a same blank, by similarly heating,
Breaking down, finish rolling are cut into 4 bar steel branch on same milling train, then pass through same Water cooling device, successively simultaneously
Second segment guide groove before first segment guide groove and 3# flying shear, shears by 3# flying shear, successively enters simultaneously before into same 3# flying shear
Second segment guide groove after first segment guide groove and 3# flying shear after same 3# flying shear, at this point, the steel branch but being had channel after cutting
Interior irregular walking is swung, cause to knock into the back, random steel the problem of.
It is found by the applicant that: during 4 cutting, the formation and movement of 4 bar steel branch be all under identical condition,
However, there is two bar steel branch normal walkings, in addition two bar steel prop up but not straight line walking but oblique line is walked or bumped against
It cuts on the skirtboard or side plate in rear channel.For these problems, applicant has looked for many influence factors by prolonged research,
It is considered to occurring knocking into the back, there is a problem between channel after the cutting of random steel, and there is no problem for other links, institute after 3# flying shear
Should be primarily upon after 3# flying shear after first segment guide groove and 3# flying shear above second segment guide groove.
For this purpose, applicant go through the production of first segment duct bottom after 3# flying shear whether uniformly, whether coefficient of friction
Identical, uniformly whether the production of the bottom wall of second segment guide groove after 3# flying shear, whether coefficient of friction is identical, and 3# flying shear whether there is axis
To bias, whether thin and thick is different for the two side walls of first segment guide groove after 3# flying shear, influences to radiate, second segment guide groove after 3# flying shear
Whether thin and thick is different for two side walls, and whether the width of second segment guide groove is insufficient after first segment guide groove and 3# flying shear after 3# flying shear.Shen
It asks someone after improving all of these factors taken together, still without solving the problems, such as.Failure of the applicant Jing Guo multiple investigation and grope, certainly
Surely it makes a fresh start, the factor of investigation is expanded to from other links being heated between 3# flying shear.
In order to solve this problem, applicant carefully studies from the links being heated between 3# flying shear, does not also have really
It has been found any exception, also do not found out at the scene or has found there is any problem.But since this problem cannot get for a long time
It solves, applicant thinks it is the key that phenomenon on surface has covered up problem certainly.Applicant is respectively from point of theory and reality
Observation is analyzed.Artificial observation and common video record are changed to high-speed video by the method that applicant improves observation
It takes pictures, just as medically doing B ultrasound, careful analysis is carried out to links, finds finally: entering 3# flying shear in bar steel branch
When preceding second segment guide groove, in 4 bar steel branch, there is two speed slightly more lower than other two speed, this
A velocity contrast is 1-2% (about 0.13 meter per second), and naked eyes, which are not almost felt, to be come, and nobody is note that nobody
Will recognize that can be in this way.
Applicant continues to analyze its reason again.By the analysis to finishing mill, it is found by the applicant that: in last finish rolling
On machine, although pressure of the theoretical topping roll on each groove be it is identical, in actually rolling, due to 4 bar steel
The distribution distance motor side of branch or the distance at bearing block end are different, so the pressure of each groove of rolling 4 bar steel branch
There is subtle difference, cause, the pressure of the groove in two middle positions is different from the pressure of the groove of other two edge, produces
The nuance of raw rolling radius.In this way, milling train is in high-speed rolling, it may appear that in 4 bar steel branch, there is two linear velocities
It is slightly more slightly lower than other two linear velocities, the later period especially a work roll cooling period, it is found by the applicant that:
Due to the abrasion of roll, this speed difference is more larger than the early period in a work roll cooling period.After finish rolling, bar steel
Branch enters flying shear (technique be to enter flying shear by Water cooling device), and channel after cutting is entered after flying shear is sheared, by
The speed difference between bar steel branch in the shear velocity of flying shear certain ratio generally bigger than bar steel Zhi Sudu, after finish rolling
It is extended, causes into when cutting rear channel, the same bar steel branch some cut in rear channel is able to maintain normal straight trip walking
Required speed, some is then less than the speed needed for keeping normal straight trip to walk, by the friction in channel and the entrance in channel
Tapering effect, the low bar steel branch of speed can oblique line walking or bump against cuts on the skirtboard or side plate in rear channel
By above-mentioned analysis, it is found by the applicant that the reason of this problem is comprehensive: although problem occurs after the shearing,
But reason be shear before stage, rather than shear after stage, have its source in finishing mill in splitting rolling
The rolling radius of each groove is different, and linear velocity is different, magnification factor is that the shearing further expansion of flying shear is same cut after
The speed difference of bar steel branch in channel, velocity amplitude needed for the bar steel branch for causing speed low is difficult to keep straight trip, to lead
It causes oblique line walking or bumps against to cut on the skirtboard or side plate in rear channel.
Therefore, applicant takes up to improve the rolling radius different problems of each groove of finishing mill.However, applicant
It was found that improving in any case, always there are difference for the rolling radius of each groove of finishing mill, and the decrease of this difference is unknown
It is aobvious.Applicant also once wants to improve Water cooling technique.But Water cooling process system is required than more complete, it is difficult to significantly be changed
Into technological parameter therein.Research of technique encounters bottleneck again.
Although the reason of having found problem, applicant does not play pre- in the technology for improving milling train and Water cooling
Phase effect, applicant change thinking again, are not tangling in the root for generating speed difference, but are looking for another way, there is speed difference
In the case where, the speed for the bar steel branch for increasing speed low, to reduce or eliminate speed difference, so that the bar steel branch that speed is low
Velocity amplitude needed for straight trip can be obtained.For this purpose, applicant have determined that quick and convenient method, that is, after finish rolling,
Into before flying shear, reduce or eliminate the speed difference of bar steel branch.For this purpose, applicant is after finish rolling, into the channel guide section before flying shear
Position, i.e., before 3# flying shear before first segment guide groove and 3# flying shear in the regional scope of second segment guide groove, while to 4 bar steel branch with foot
Enough speed, which can increase the speed of the low 2 bar steel branch of original speed, essentially such that 4 bar steel Zhi Chongxin
Identical speed is obtained, in this way, 4 bar steel branch there will not be apparent speed difference, final actual production card by shearing
Bright, this technology cleverly solves steel branch, and irregular walking is swung in channel after cutting, solve knock into the back, the technology of random steel
Problem.
2, solution is practicable
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, bar multi wire cutting production line of the invention includes:
Guide groove after the mm finishing mill unit 8 that is successively connected, Water cooling device 7,3# flying shear front guide slot, 3# flying shear 4,3# flying shear,
And cold bed 9；Bar steel branch realizes multi-segmentation in mm finishing mill unit 8；Water cooling device 7 is the pipeline that both ends have opening
Structure, for cooling to multiple bar steel Zhi Jinhang Chuan Shui after splitting rolling, to improve the performance of bar；Cold bed 9 receives warp
Bar steel branch after crossing the shearing of 3# flying shear, while rolling and being cut out the multiple bar steel branch come and being moved to one by one by cold bed
On the rack gear of cold bed.Bar steel branch is after air-cooled on cold bed 9, then carries out bailing.
3# flying shear front guide slot includes: second segment guide groove 2 before first segment guide groove 1 and 3# flying shear before the 3# flying shear being successively connected；
The length of second segment guide groove 2 is greater than the length of first segment guide groove 1 before 3# flying shear before 3# flying shear；First segment guide groove 1 is before 3# flying shear
Bell shape；Close to 3# flying shear 4, before 3# flying shear, first segment guide groove 1 plays first segment guide groove 1 gathers bar steel branch before 3# flying shear
Effect, bar steel branch is brought at 3# flying shear 4 just to shear；The upstream of second segment guide groove 2 can again successively before 3# flying shear
Connection guide groove, Water cooling device and mm finishing mill unit, into 3# flying shear before bar steel branch in second segment guide groove 2 be by finish rolling
Treated for rolling and/or Water cooling；
As shown in Figures 2 and 3, second segment guide groove 2 includes: the leading slot 21 of rectangle and connects the rectangle before 3# flying shear
The taper of leading slot assists guide groove 22；The section of the leading slot 21 of rectangle is identical along its length, props to bar steel main
Transport and guiding role, it is bell shape that taper, which assists guide groove 22, plays the role of gathering, bar steel branch is brought to rectangle
In leading slot 21, the outlet of the leading slot 21 of the rectangle is extend into before 3# flying shear in the entrance of first segment guide groove 1；
Wherein, the direction 3 of bar steel Zhi Hangjin is from first segment guide groove before second segment guide groove to 3# flying shear before 3# flying shear
Direction, first segment guide groove 1 is located at before 3# flying shear 4 and 3# flying shear between second segment guide groove 2 before 3# flying shear；
As shown in Figure 1, second segment guide groove 2 is equipped with frequency conversion depressing table 25 before 3# flying shear；As shown in Figures 2 and 3,3# flying shear
Preceding second segment guide groove has two side walls and the bottom wall that is arranged between two side walls, two sides of second segment guide groove before 3# flying shear
Opening is formed between wall, the support roller is arranged in said opening, second before the parallel 3# flying shear of the axis of the support roller
The bottom wall of section guide groove.The frequency conversion depressing table 25 includes: the support roller 252 of variable-frequency motor 251 and connection variable-frequency motor, described
Variable-frequency motor 251 is arranged in front of 3# flying shear on the side wall of second segment guide groove, and the bottom wall of second segment guide groove 2 is equipped with and opens before 3# flying shear
Mouthful, the setting of support roller 252 is in said opening；Either support roller 252 is arranged before 3# flying shear in second segment guide groove 2；
The bottom wall of second segment guide groove before the parallel 3# flying shear of the axis of the support roller 252, as shown in Fig. 2, frequency conversion roll surface horizontal line 253 is
The extreme higher position of support roller is the supporting surface for supporting bar steel branch, the bottom wall of second segment guide groove before 3# flying shear is higher by, to prop up
Support bar steel branch.
Further, the support roller is arranged on the side wall of leading slot of the rectangle, convenient for transmission and installation.
Further, the number of the support roller is two, the respectively support roller of the support roller of head end and tail end, head end
Support roller between 3# flying shear and the support roller of tail end, so as to share and provide enough power and it is enough support and
Speed supplement.
Further, the spacing of two support rollers is 1 meter, in this way, steel branch not only can guarantee horizontal shear effect, but also not
Flying shear tool arm can be collided.
Further, the support roller distance 3# flying shear shear centre of head end is 1550mm to 1750mm, both can guarantee level
Shear effect, and flying shear tool arm will not be collided.
Further, the leading edge (the most left vertical edge of slot 21 is dominated in Fig. 2) of leading slot of the support roller of head end apart from rectangle
For 450mm to 550mm.It in this way, the walking fluctuation in guide groove of steel branch is small, and is one meter or so with a upper Variable frequency roller spacing,
Having unified roller spacing has stabilization to rolled piece spring.
Further, second segment guide groove 6 first segment guide groove 5 and 3# flying shear after is connected with after 3# flying shear after 3# flying shear in turn,
First segment guide groove 5 is bell shape after 3# flying shear, second segment guide groove 6 and 2 structure of second segment guide groove before 3# flying shear after 3# flying shear
It is identical.Second segment guide groove length is longer after 3# flying shear, several times longer than second segment guide groove 2 before 3# flying shear even tens times, plays
Bar steel branch after shearing is transported to the effect of cold bed.Second segment guide groove also is provided with frequency conversion depressing table after 3# flying shear, to protect
After card shearing, each bar steel Zhi Douyou certain speed straight trip.
Further, mm finishing mill unit has the groove for propping up bar steel four line cuttings, the bar multi wire cutting production line
It is 4 times of efficiency of common one-strand roller for four line cuttings of bar, second segment guide groove conveys four bar steel before 3# flying shear
Branch.Bar steel branch can be two kinds of specifications of diameter 12mm and 14mm.Rolled piece shearing section and the preferable speed of service are shown in Table 1:
| Serial number | Rolled piece specification (mm) | Rolled piece area (mm2) | Bar rolling speed (m/s) | Remarks |
| 1 | 12 | 226.2 | 13.2 | Splitting rolling |
| 2 | 14 | 307.8 | 13.5 | Splitting rolling |
Table 1: rolled piece shearing section and speed of service table
Further, the size of the support roller is ф 180mm × 380mm；The model of the variable-frequency motor:
YVP100L2-4, P=2.2KW, to provide support and transport for four bar steel branch with enough power；The kind of drive: it hands over
Rheology frequency, the continuous Positive work of driven separately.The linear velocity of frequency conversion depressing table is 13.5m/s, can make four bar steel branch
Regain same speed.
Further, the motor model that 3# flying shear uses is Z355-6C, the cutting edge line of rated power 355KW, 3# flying shear
Speed is more than bar steel branch speed of service 2--10%, for example, control is being more than within bar steel branch speed of service 2--5%, with
Reduce the expansion of speed difference to the greatest extent under the premise of being able to achieve and shearing；Minimum shear temperature: 550 DEG C, the hot tensile strength of rolled piece:
≤ 300MPa, maximum shear stress 400KN, the radius of gyration: 505mm, bar steel branch enter the taper of second segment guide groove before 3# flying shear
The speed for assisting guide groove is 3--18m/s, and the length after the shearing of bar steel branch is 84 to 108m.The above-mentioned parameter of 3# flying shear with cut
The other parameters of rolling are divided to match, the normal walking that bar steel props up after guaranteeing normal shearing and shearing.
The present invention changes the steel of multi-segmentation in the situation for skew of just walking after 3# flying shear cutting, improves walking
Stability reduces steel toe a possibility that channel is knocked deformation, is finally reached to prevent to fly out on steel Zhi Dong skirtboard and knock into the back
A upper steel causes the case where stifled steel, reduces waste product, reduces the time of handling failure, improves the production of entire roll line
Efficiency, in the early period in a work roll cooling period, efficiency can be improved 10% or more, to the later period in a work roll cooling period, therefore
The barrier reduction time is more, and efficiency raising becomes apparent from, and efficiency can be improved 20%.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.For this
Each component part of invention can be combined with each other under conditions of not conflicting, any those skilled in the art, not depart from this
Made equivalent changes and modifications, should belong to the scope of protection of the invention under the premise of the conceptions and principles of invention.
Claims (10)
1. a kind of bar multi wire cutting production line, which is characterized in that the bar multi wire cutting production line includes:
Guide groove, Yi Jileng after the mm finishing mill unit that is successively connected, Water cooling device, 3# flying shear front guide slot, 3# flying shear, 3# flying shear
Bed；Bar steel branch realizes multi-segmentation in mm finishing mill unit；Water cooling device is the pipeline configuration that both ends have opening；
3# flying shear front guide slot includes: second segment guide groove before first segment guide groove and 3# flying shear before the 3# flying shear being successively connected；3# flying shear
The length of preceding second segment guide groove is greater than the length of first segment guide groove before 3# flying shear；First segment guide groove is toroidal before 3# flying shear
Shape；Second segment guide groove includes: the taper auxiliary guide groove of the leading slot of rectangle and the leading slot of the connection rectangle before 3# flying shear；Institute
The outlet for stating the leading slot of rectangle is extend into before 3# flying shear in the entrance of first segment guide groove；
Before 3# flying shear first segment guide groove before 3# flying shear, 3# flying shear second segment guide groove far from 3# flying shear；
Second segment guide groove has two side walls and the bottom wall that is arranged between two side walls before 3# flying shear, and second segment is led before 3# flying shear
Slot is equipped with frequency conversion depressing table；The frequency conversion depressing table includes: the support roller of variable-frequency motor and connection variable-frequency motor, the change
Frequency motor is arranged in front of 3# flying shear on the side wall of second segment guide groove, is formed between the two side walls of second segment guide groove before 3# flying shear
Opening, the support roller are arranged in said opening, the bottom wall of second segment guide groove before the parallel 3# flying shear of the axis of the support roller.
2. bar multi wire cutting production line as described in claim 1, which is characterized in that the variable-frequency motor is arranged in the square
On the side wall of the leading slot of shape.
3. bar multi wire cutting production line as described in claim 1, which is characterized in that the number of the support roller is two,
The respectively support roller of the support roller of head end and tail end, the support roller of head end is between 3# flying shear and the support roller of tail end.
4. bar multi wire cutting production line as claimed in claim 3, which is characterized in that the spacing of two support rollers is 1
Rice.
5. bar multi wire cutting production line as claimed in claim 3, which is characterized in that the support roller distance 3# flying shear of head end is cut
The heart that hits is 1550mm to 1750mm.
6. bar multi wire cutting production line as claimed in claim 3, which is characterized in that master of the support roller of head end apart from rectangle
The leading edge of guide groove is 450mm to 550mm.
7. bar multi wire cutting production line as described in claim 1, which is characterized in that be connected with 3# flying shear after 3# flying shear in turn
Second segment guide groove after first segment guide groove and 3# flying shear afterwards, first segment guide groove is bell shape after 3# flying shear, second after 3# flying shear
Section guide groove is equipped with the frequency conversion depressing table, and the length of second segment guide groove is ten times of second segment guide groove before 3# flying shear after 3# flying shear
More than.
8. bar multi wire cutting production line as described in claim 1, which is characterized in that the mm finishing mill unit has to bar steel
The groove of four line cuttings is propped up, second segment guide groove conveys four bar steel branch before 3# flying shear.
9. bar multi wire cutting production line as described in claim 1, which is characterized in that the size of the support roller is ф
180mm×380mm；The model of the variable-frequency motor: YVP100L2-4, rated power P=2.2KW；The kind of drive: exchange becomes
Frequently, the continuous Positive work of driven separately.
10. bar multi wire cutting production line as described in claim 1, which is characterized in that the motor model that 3# flying shear uses for
Z355-6C, the cutting edge linear velocity of rated power 355KW, 3# flying shear are more than bar steel branch speed of service 2--10%, revolution half
Diameter: 505mm, the speed that bar steel branch enters the taper auxiliary guide groove of second segment guide groove before 3# flying shear is 3--18m/s, bar steel
Length after branch shearing is 84 to 108m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344652.1A CN109396182B (en) | 2018-11-13 | 2018-11-13 | Multi-line bar cutting production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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