CN106392031A - Casting blank downward-pressing device - Google Patents
Casting blank downward-pressing device Download PDFInfo
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- CN106392031A CN106392031A CN201510463547.XA CN201510463547A CN106392031A CN 106392031 A CN106392031 A CN 106392031A CN 201510463547 A CN201510463547 A CN 201510463547A CN 106392031 A CN106392031 A CN 106392031A
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- strand
- roller
- support
- recess
- main body
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Abstract
The invention provides a casting blank downward-pressing device which comprises a support, an upper roller, a lower roller, a drive mechanism, a detector, a moving mechanism and a control part. The upper roller and the lower roller can be kept on the support in a manner of being capable of rotating relative to the support and are used for clamping a solidified casting blank and pressurizing the solidified casting blank. The drive mechanism is constructed to be used for driving the upper roller so that the upper roller and the lower roller can get close to each other and get away from each other. The detector is constructed to be capable of detecting the center position, in the width direction, of the part of the casting blank, wherein the part of the casting blank is located at the position closer to the upstream side than the upper roller and the lower roller. The moving mechanism is constructed to enable the support to move in the width direction. Each of the upper roller and the lower roller is provided with an annular protruding bar extending in the respective circumferential direction. The control part controls the moving mechanism so that the support can move, and the positions, in the width direction, of the protruding bars are roughly consistent with the central position, in the width direction, of the casting blank, wherein the central position of the casting blank is detected by the detector.
Description
Technical field
The application is related to a kind of strand screwdown gear.
Background technology
When in continuous casting equipment, fluid origin strand solidifies completely, the middle body in strand produces sometimes
The small cavity that the raw axis direction along strand extends.Using milling train to exist such cavity shape
When the strand of state is rolled, in this hollow sectors, crackle can occur.Therefore, Japanese Unexamined Patent Publication 2009-
No. 279652 publication (hereinafter referred to as patent documentations 1.) disclose one kind and clamped using upper roller and lower roll and coagulate
Gu after the width of strand on middle body (central axial portion) strand screwdown gear.?
Middle body on the axis direction of upper roller is provided with the ridge of radially projecting ring-type.If being dashed forward using this
Bar is pressurizeed (pressure) to the middle body of strand, then can reduce the cavity producing in strand,
Therefore, it is possible to suppress the crackle of the inside of strand.
Content of the invention
However, in continuous casting equipment fluid origin strand sometimes while towards with design continuously casting
It is envisioned for direction (width of strand) that the imagining center line that strand passes through intersects partially during equipment
Move while reaching strand screwdown gear.In this case, depressed in the deviation of strand using the ridge of upper roller
The part of centre part (central axial portion).Thus, the strain generation producing in the inside of strand is biased,
Therefore strand is bent with the position of strand screwdown gear for starting point.As a result, occur according in strand
Bending degree it becomes difficult to carry out cutting of strand in the downstream of strand screwdown gear using cutting machine
Disconnected process.
Therefore, the application explanation a kind of can suppress reduce strand in produce empty when strand generation curved
Bent strand screwdown gear.
The strand screwdown gear of one technical scheme of the application includes：Support (Japanese：スタンド)；
1st roller and the 2nd roller, the 1st roller and the 2nd roller are held in support in the way of can rotating with respect to support,
Pressurize for the strand after clamping solidification and to the strand after this solidification；Drive mechanism, consists of
For drive at least one of the 1st roller and the 2nd roller so that the 1st roller and the 2nd roller close to each other and separate；
Detector, consists of and can detect the wide positioned at the part leaning on upstream side than the 1st roller and the 2nd roller of strand
Middle position on degree direction；Travel mechanism, consists of for making support be moved in the width direction；With
And control unit, it is provided with along at least in the 1st roller and the 2nd roller at least one of the 1st roller and the 2nd roller
The ridge of the circumferentially extending ring-type of person, control unit controls travel mechanism so that support is moved, so that ridge
Width on the middle position detected by detector being located proximate to strand.
In the strand screwdown gear of a technical scheme of the application, control unit controls travel mechanism to make to prop up
Frame moves, so that the width being detected by detector being located proximate to strand on the width of ridge
On middle position.Therefore, on the width being located proximate to strand on the width of ridge
In the state of middle position, pressurizeed using the ridge located at least one of the 1st roller and the 2nd roller
(pressure).Thus, even if in the case that strand offsets and reaches strand screwdown gear,
Also suitable pressure can be carried out near the middle body of strand.As a result, it is possible to suppression is reducing strand
Interior generation empty when strand bend.
Can also be that control unit controls travel mechanism so that described support is moved, so that the width side of ridge
The middle position on width that position upwards is detected by detector with strand is substantially uniform.At this
In the case of, even if it is also possible to right in the case that strand offsets and reaches strand screwdown gear
The middle body of strand carries out suitable pressure.As a result, it is possible to strongly suppress generation in minimizing strand
When empty, strand bends.
Can also be to be provided with recess in the main body of at least one of the 1st roller and the 2nd roller, this recess is constituted
It is for supporting strand, recess is circumferentially extending along main body.In this case, using the 1st roller and
Under 2nd roll-in during strand, strand is supported in recess.Therefore, the contact area between strand and roller
Increase.As a result, the revolving force being provided with the roller of recess easily acts on strand, therefore, it is possible to effectively downward
Trip layback pulls out strand.
Can also be to be provided with recess in the main body of at least one of the 1st roller and the 2nd roller, this recess is constituted
It is for supporting strand, recess is circumferentially extending along main body, ridge is located in recess, the leading of ridge
The position at top radially of body is roughly the same with the position of the outer peripheral face of main body.In this case, right
In circular strand, strand can be depressed while by strand configuration in recess.On the other hand, right
In the strand of rectangle, can be abutted against with the outer peripheral face of roller and the top of ridge respectively with the outer surface of strand
State pressure strand.Thus, it is possible to it is multiple to rectangle, circle etc. not using same strand screwdown gear
The strand of similar shape is depressed.Result it is not necessary to change strand to process strand of different shapes
Roller of screwdown gear etc. operates.
Can also be, when being observed along the direction with the orthogonal axe of main body, to be structured to support
The profile of the circular recess of strand is in arc-shaped.In this case, using the pressure of strand screwdown gear
During especially circular strand, the revolving force of roller easily acts on strand.Thus, it is possible to more effectively to
Downstream drawing strand.
Can also be, when being observed along the direction with the orthogonal axe of main body, to be structured to support
The profile of the circular recess of strand includes：1st arc-shaped outer rim, it is located at that side of axis；And
2nd arc-shaped outer rim, it is located at than the 1st arc-shaped outer rim position in the outer part and radius of curvature is more than the 1st
The radius of curvature of arc-shaped outer rim.In this case, the casting of the circle that the 2nd arc-shaped outer rim can support
The diameter of the strand of the circle that can support with diameter greater than the 1st arc-shaped outer rim of base.Therefore, it is possible to profit
Depress the strand of two different-diameters with same strand screwdown gear.Result it is not necessary in order to process difference
The strand of shape and change roller of strand screwdown gear etc. operation.
Using the strand screwdown gear of the application, can suppress reduce produce in strand empty when strand
Bend.
Brief description
Fig. 1 is the side view of of roughly expression continuous casting equipment.
Fig. 2 is the top view roughly representing the local of continuous casting equipment in Fig. 1.
Fig. 3 is the front view of that represents strand screwdown gear.
Fig. 4 is the IV-IV line sectional view in Fig. 3.
(a) of Fig. 5 is the front view representing upper roller, and (b) of Fig. 5 is the front view representing lower roll.
Fig. 6 is the block diagram of the hardware configuration representing strand screwdown gear.
(c) of (a) of Fig. 7～Fig. 7 declines and to strand towards lower roll namely for explanation upper roller
Carry out the figure of the appearance processing of feeling relieved.
(c) of (a) of Fig. 8～Fig. 8 declines and to strand towards lower roll namely for explanation upper roller
Carry out the figure of the appearance processing of feeling relieved.
(a) of Fig. 9 is to represent pressure with the strand before the plane cutting pressure of the axis direction along strand
The axonometric chart of the appearance of strand before lower, (b) of Fig. 9 is to be cutd open with the plane of the axis direction along strand
Hob the axonometric chart to represent the appearance of strand during pressure for the lower front strand.
Figure 10 is to represent to produce in the inside of this strand when the strand implementing centering process is depressed
The figure of of the distribution of strain.
Figure 11 is the top view roughly representing the local of continuous casting equipment of comparative example.
Figure 12 is the strain representing the inside of this strand when the strand that centering process is not carried out is depressed
The figure of of distribution.
Figure 13 is to eliminate the figure of the size offseting required power of strand for explanation.
Figure 14 is the front view of another that represents strand screwdown gear.
(a) of Figure 15 is the front view of the appearance representing that the strand of path is carry by lower roll, Figure 15's
B () is the front view of the appearance representing that the strand in big footpath is carry by lower roll.
Description of reference numerals
1st, strand screwdown gear；10th, support；12nd, base portion；12a, flange part；14A、14B、
Main frame；14a, 14b, pillar；14c, beam；14d, 14e, axle box；16th, sub-frame；18、
Sliding component；20th, upper roller (the 1st roller)；20a, main body；20b, ridge；30th, lower roll the (the 2nd
Roller)；30a, main body；30b, ridge；30c, recess；30c1, arc-shaped outer rim (the 1st arc-shaped
Outer rim)；30c2, arc-shaped outer rim (the 2nd arc-shaped outer rim)；40A, 40B, drive mechanism；50A、
50B, detector；50a, pressing device；50b, supporting member；50c, contact roller；50d, sensing
Device；60th, travel mechanism；70th, control unit；100th, continuous casting equipment；101st, mold；102、
Cooling twice band；103rd, drawing apparatus for correcting；104th, strand backing roll；120th, pinch roll；130、
Cutting machine；Cav, cavity；CL, imagining center line；FL, ground；FLa, track component；M、
Motlten metal (molten steel)；Sl, strand (section)；St, strand (whole piece blank (Japanese：ストラ
ンド)).
Specific embodiment
The presently filed embodiment being described below is the illustration for the present invention is described, the therefore present invention
Should not be limited to content below.In the following description, to same part or have same function
Part uses same reference, and the repetitive description thereof will be omitted.
[structure of continuous casting equipment]
First, the structure of continuous casting equipment 100 is described.As shown in figure 1, continuous casting equipment 100 wraps
Include mold 101, cooling twice band 102, drawing apparatus for correcting 103, pinch roll 120, strand screwdown gear
1st, cutting machine 130 and multiple strand backing roll 104.
Mold 101 is used for while cooling down motlten metal (molten steel) M mono- flowing out from tundish (not shown)
While being configured to reservation shape.Cooling twice band 102 is located at the downstream of mold 101, for further
Cool down strand (the whole piece blank drawing out from mold 101：Strand)St.Drawing apparatus for correcting 103
In the downstream of cooling twice band 102, correct on one side downstream side for being curved to strand St
Drawing this strand St.
Multiple strand backing rolls 104 are joined in the way of the circulating direction (drawing direction) along strand St arranges
Put the downstream in drawing apparatus for correcting 103.Strand backing roll 104 has the width along strand St
Extend rotation axiss, for support strand St and with strand St downstream side shifting and rotated.
Pinch roll 120 is used for strand St downstream side conveying in the way of clamping strand St.
Here, the concretionary so-called solidified shell of surface element is included by the strand St that mold 101 shapes
And the motlten metal of the non-curdled appearance of the inside of this solidified shell is fusing department (not solidifying portion).Strand
St is cooled with going towards downstream, and fusing department gradually solidifies, and solidified shell is grown up.That is, with solidifying
Gu the growth of shell, fusing department reduces, and the thickness of solidified shell increases.Reach strand screwdown gear in strand St
Before 1, strand St solidifies completely.In addition, it is following, sometimes by strand St in drawing apparatus for correcting 103
The conveying direction in downstream is referred to as X-direction, by the width in the downstream in drawing apparatus for correcting 103 for the strand St
Degree direction is referred to as Y direction, and the thickness direction in the downstream in drawing apparatus for correcting 103 for the strand St is referred to as
Z-direction.X-direction is also the axis direction of strand St.X-axis and Y-axis are orthogonal, and in water
Extend in plane.Thus, " width " of strand St refers to strand St size in the horizontal direction.Z
Axle is orthogonal with both X-axis and Y-axis, and extends along vertical.
As depicted in figs. 1 and 2, strand screwdown gear 1 configures in the downstream of pinch roll 120.As Fig. 9
Shown in (a), sometimes in the middle body (central axis of the strand St that have passed through drawing apparatus for correcting 103
Part) produce along strand St axis direction extend small empty Cav.Strand screwdown gear 1 is to use
After pressure solidification, the strand St of (after in the present embodiment for solidifying completely) to reduce empty Cav's
Device.As shown in Figure 2 to 4, strand screwdown gear 1 have support 10, upper roller 20 (the 1st roller), under
Roller 30 (the 2nd roller), drive mechanism 40A, 40B, detector 50A, 50B, travel mechanism 60 and control
Portion 70 processed.
Support 10 has base portion 12, sub-frame 16 and a pair of main frame 14A, 14B.Base portion 12 configures
On the FL of ground.As shown in figure 4, being provided with the flange part 12a protruding outside to base portion 12 in base portion 12.
Flange part 12a is chimeric with the track component FLa phase located at ground FL.Track component FLa is along Y direction
Extend.The section of track component FLa is in L-shaped.The top ends of track component FLa are towards base portion 12 lateral bending
Bent.Therefore, flange part 12a is surrounded by ground FL and track component FLa.
It is provided with sliding component 18 between base portion 12 and ground FL.Sliding component 18 is structured to reduce base
Frictional resistance between portion 12 and ground FL.It is coated with such as grease on the surface of sliding component 18.For
Prevent sliding component 18 from burn because of the frictional force producing between base portion 12 and ground FL it is also possible to sharp
Form sliding component 18 with the material softer than base portion 12 and ground FL.Base portion 12 is configured to utilize sliding component
18 slide between this base portion 12 and ground FL and can slide along Y direction.As long as base portion can be made
12 move with respect to ground FL, then sliding component 18 can also be replaced to use other components (for example, rail
Road is combined with wheel).
As shown in Figure 3 and Figure 4, main frame 14A, 14B configures on base portion 12.Main frame 14A, 14B
Arranged in the way of relative in the Y-axis direction.As shown in Figure 2 and Figure 4, main frame 14A, 14B has respectively
There are pillar 14a, 14b and beam 14c.As shown in figure 4, pillar 14a, 14b are set in the way of extending upward
On base portion 12.Pillar 14a is located at the upstream side of the conveying direction of strand St.Pillar 14b is located at strand St
Conveying direction downstream (cutting machine 130 side).Beam 14c along X-direction extend, by pillar 14a,
The upper end of both 14b is joined to one another.As shown in figure 3, sub-frame 16 extends along Y direction,
The beam 14c of both main frame 14A, 14B is joined to one another.
Upper roller 20 is located at the top of lower roll 30.As shown in (a) of Fig. 3 and Fig. 5, upper roller 20 is in cylinder
The outer peripheral face of main body 20a of shape arranges ridge 20b.Each end of main body 20a is respectively arranged in axle
Case 14d.Therefore, upper roller 20 (main body 20a) is propped up in the way of can rotating with respect to a pair of axle box 14d
Hold in a pair of axle box 14d.Ridge 20b is integratedly located at main body 20a, and the periphery of autonomous agent 20a faces out
Side projects.The central part that ridge 20b is located in the Y direction of main body 20a.Ridge 20b is circular, edge
The circumferentially extending of main body 20a.
As shown in (b) of Fig. 3 and Fig. 5, lower roll 30 is prominent in the outer peripheral face setting of columned main body 30a
Bar 30b's and recess 30c.Each end of main body 30a is respectively arranged in axle box 14e.Therefore, lower roll
30 (main bodys 30a) are supported on a pair of axle box 14e in the way of can rotating with respect to a pair of axle box 14e.
Thus, lower roll 30 is held in support 10 by axle box 14e in the way of can rotating with respect to support 10.
A pair of axle box 14e configures on base portion 12.A pair of axle box 14e is arranged in the way of relative in the Y-axis direction.
Thus, lower roll 30 is not lifted, and is rotated with the state terminating in original place.
The central part that recess 30c is located in the Y direction of main body 30a.The periphery than main body 30a for the recess 30c
Towards inner side depression.Recess 30c is circumferentially extending along main body 30a.Along the axis with main body 30a just
When the direction handed over is observed, recess 30c is in arc-shaped.That is, the portion being provided with recess 30c of main body 30a
The diameter dividing becomes big with going towards the end of main body 30a.
Integratedly located at main body 30a, the outer peripheral face of autonomous agent 30a projects ridge 30b laterally.Ridge 30b
Central part in the Y direction of main body 30a.More specifically, ridge 30b is located in recess 30c
The part of depression.The position at the top (top) radially in main body 30a of ridge 30b and main body
The position of the outer peripheral face of 30a is roughly the same.That is, the diameter at this top and main body 30a except recess 30c with
The diameter of outer part is roughly the same.Ridge 30b is circular, circumferentially extending along main body 30a.
Upper roller 20 and lower roll 30 configure in the way of the axis of upper roller 20 is parallel to each other with the axis of lower roll 30.
Ridge 20b of upper roller 20 is arranged along the vertical direction with ridge 30b of lower roll 30.
Drive mechanism 40A, 40B is structured to make upper roller 20 lift.More specifically, drive mechanism
40A, 40B are used for making upper roller 20 separate near lower roll 30 or with lower roll 30.As shown in Figure 3 and Figure 4, drive
Motivation structure 40A is on the beam 14c of main frame 14A.Drive mechanism 40A is such as hydraulic cylinder, is configured to
Can stretch with respect to lower section.The bottom of drive mechanism 40A is connected with an axle box 14d.As shown in figure 3,
Drive mechanism 40B is on the beam 14c of main frame 14B.Therefore, upper roller 20 is by axle box 14d and driving machine
Structure 40A, 40B are held in support 10 in the way of can rotating with respect to support 10.Drive mechanism 40B is
Such as hydraulic cylinder, is configured to stretch with respect to lower section.The bottom of drive mechanism 40B and another axle
Case 14d connects.Therefore, in the action of drive mechanism 40A, 40B, upper roller 20 is by each axle box 14d liter
Fall.
Detector 50A, 50B are configured to detect the middle position in the Y direction of strand St.As figure
2nd, shown in Fig. 3 and Fig. 6, detector 50A, 50B are respectively provided with pressing device 50a, supporting member 50b, connect
Tactile roller 50c and sensor 50d.The pressing device 50a of detector 50A is located at the pillar 14a of main frame 14A.
The pillar 14a that the pressing device 50a of detector 50A is configured to respect to main frame 14B stretches.Detection
The pressing device 50a of device 50B is located at the pillar 14a of main frame 14B.The pressing device 50a of detector 50B
It is configured to the pillar 14a with respect to main frame 14A to stretch.
Supporting member 50b is located at the top of pressing device 50a.Contact roller 50c is propped up in the way of can rotating
Hold in supporting member 50b.Contact roller 50c is cylindric, extends along Z-direction.The rotation of contact roller 50c
Shaft axis extend along Z-direction.
Sensor 50d is configured to detect the position of pressing device 50a.For example, sensor 50d is used for
Detection stroke from initial point for the pressing device 50a.Here, " initial point " can be located at following location,
The i.e. situation consistent in the Y-axis direction with ridge 20b, 30b of middle body in the Y direction of strand St
Under contact roller 50c abut with the outer surface of strand St when pressing device 50a position.Sensor 50d
Both can be for example encoder or magneto strictive sensor.Sensor 50d both can be built in
Pressing device 50a is it is also possible to configuration is in the outside of pressing device 50a.
Travel mechanism 60 is structured to make support 10 move along Y direction.As shown in figure 3, travel mechanism
60 are fixed on the FL of ground.Travel mechanism 60 is such as hydraulic cylinder.Travel mechanism 60 is configured to Y
Direction of principal axis stretches.The top of travel mechanism 60 is connected to support 10.Thus, in travel mechanism's 60 action,
Support 10 is guided along Y direction by track component FLa, and the reduction being brought using sliding component 18
The effect of frictional resistance moves (slip) on the FL of ground.
Control unit 70 is used for carrying out the control in each portion of strand screwdown gear 1.Specifically, as shown in fig. 6,
Control unit 70 controls drive mechanism 40A, 40B, to make upper roller 20 lift in predetermined instant.Control unit 70
Control the stroke of pressing device 50a, to maintain contact roller 50c and the casting reaching strand screwdown gear 1
The state that the outer peripheral face of base St has abutted.
The signal based on the sensor 50d carrying out self-detector 50A for the control unit 70 and come self-detector 50B's
The signal of sensor 50d makes the amount of movement of support 10 movement controlling travel mechanism 60.Specifically, control
Portion 70 processed makes support 10 mobile using travel mechanism 60, to fill with reaching strand pressure in contact roller 50c
Put 1 strand St outer peripheral face abutted in the state of make detected by the sensor 50d of detector 50A
The pressing device 50a detected by sensor 50d of the stroke Pa and detector 50B of pressing device 50a
Difference δ (=Pa-Pb) substantially 0 represented by the difference of stroke Pb.In this manual, difference
δ " substantially 0 " refers to the error containing 5% about.
Cutting machine 130 configures the downstream in strand screwdown gear 1.Cutting machine 130 is used for reaching cutting
The strand St of off line 130 cuts off in the width direction, and makes the strand (section of predetermined length：Slab)Sl.
[action of strand screwdown gear]
Then, the action of strand screwdown gear 1 is described.Here is it is contemplated that such situation：By continuous
When the top of the fluid origin circular strand St of Casting Equipment 100 is with comfortable design continuous casting equipment 100
It is envisioned for the state that the imagining center line CL (with reference to Fig. 2) that strand St passes through deviates and reach strand pressure
The situation of device 1.
When the top of strand St reaches strand screwdown gear 1, such as (a) of (a) of Fig. 7 and Fig. 8 is shown,
Control unit 70 controls pressing device 50a, so that pressing device 50a is extended, so that reaching strand screwdown gear
1 outer peripheral face of strand St abuts with contacting roller 50c.Abut it in contact roller 50c with the outer peripheral face of strand St
Afterwards, control unit 70 controls the stroke of pressing device 50a, to maintain this abutting state.
Contact roller 50c abut with the outer peripheral face of strand St after, control unit 70 based on self-detector 50A,
Each sensor 50d of 50B inputs to the signal of control unit 70 amount of movement to control support 10.For example, exist
As shown in (a) of Fig. 7 and (a) of Fig. 8, difference δ is not in the case of substantially 0, strand St's
Middle body in Y direction and ridge 20b, 30b stagger in the Y-axis direction, and therefore control unit 70 is such as
Travel mechanism 60 is controlled to make the amount of movement of support 10 movement as shown in (b) of (b) of Fig. 7 and Fig. 8,
So that difference δ substantially 0.
Control unit 70 terminates when judging into difference δ substantially 0 to make support 10 mobile using travel mechanism 60
Control.Thus, in the Y direction of the position in the Y direction of ridge 20b, 30b and strand St
Centre is partly substantially uniform.Afterwards, as shown in (c) of Fig. 7 and (c) of Fig. 8, control unit 70 controls drive
Motivation structure 40A, 40B, make upper roller 20 decline towards lower roll 30.Thus, from the central axis of strand St
Pressurize to strand St in both sides.Thus, such as shown in (b) of Fig. 9, the cavity within strand St can be reduced
Cav, and as shown in Figure 10, the strain producing in the inside of strand St is substantially symmetric.Thus, such as Fig. 2
Shown, in the downstream of strand screwdown gear 1, the strand St direction depressed by strand screwdown gear 1 is cut
Off line 130 is in that substantially linear moves.In addition, in Fig. 10, the denseer region representation stretching of concentration should
Become bigger, the lighter region representation compression strain of concentration is bigger.
[acting on]
As described, in continuous casting equipment 100 fluid origin strand St sometimes to imagination
Direction (width of strand St, Y direction) skew that centrage CL intersects reaches strand
Screwdown gear 1.Now, it be not controlled portion 70 to the shifting making support 10 movement using travel mechanism 60
In the case of dynamic control, as shown in figure 11, depressed in the deviation of strand St using ridge 20b of upper roller 20
The part of centre part (central axial portion).Thus, as shown in figure 12, produce in the inside of strand St
Strain occur biased.Therefore, as shown in figure 11, strand St is with the position of strand screwdown gear 1 as starting point
Bend.As a result, the degree according to the bending occurring in strand St, becomes strand St significantly inclined
It is difficult by the cut-out process that cutting machine 130 carries out strand St from imagining center line CL.In addition, in figure
In 12, it is also in the same manner as Figure 10, the denseer region representation elongation strain of concentration is bigger, and concentration is lighter
Region representation compression strain is bigger.In fig. 12, there is larger elongation strain in the left side of strand St,
There is larger compression strain on the right side of strand St.
In order to there is not the bending of such strand St it is also contemplated that reaching in strand St as shown in Figure 13
The forward position Y direction of strand screwdown gear 1 applies loading F to strand St, makes in the Y direction of strand St
Middle position is consistent with imagining center line CL.For now required loading F, by parameter E, I, a,
L is respectively defined as
E：Young's moduluss [the kg/mm of strand St2]
I：Cross sectional moment of inertia [the mm of strand St4]
a：It is being applied with the middle position of the position of loading F, strand St with respect to imagining center line CL
Side-play amount
L：The distance between roller 123 and strand screwdown gear 1
When, F=3EIa/L can be utilized3Obtain.If however, wanting to reduce from roller 123 to strand
Reduce L, then it would be better to making the loading of needs during the side-play amount of strand St in a period of till screwdown gear 1
The size of F increases.In addition, if the size of strand St increases, I increases, and therefore still makes the lotus of needs
The size of weight F increases.Therefore, method loading F being put on strand St is difficult to mitigate strand St's sometimes
Skew.
But, in the present embodiment, control unit 70 controls travel mechanism 60 to make support 10 mobile, with
Make the Y-axis side of position in the Y direction (width of strand St) of ridge 20b, 30b and strand St
Substantially uniform to the middle position on (width of strand St).Therefore, in ridge 20b, 30b
In the state of middle position in the Y direction of the position in Y direction and strand St is substantially uniform, profit
Pressurizeed with ridge 20b, 30b (pressure).Thus, even if offset in strand St reaching
It is also possible to suitable pressure is carried out to the middle body of strand St in the case of strand screwdown gear 1.
As a result, it is possible to strongly suppress the strand St when reducing the empty Cav producing in strand St to bend.
In the present embodiment, it is provided with circumferentially-extending recess 30c along this lower roll 30 in lower roll 30.Cause
This, when using upper roller 20 and lower roll 30 pressure strand St, strand St is supported in recess 30c.Thus,
Contact area between strand St and lower roll 30 increases.As a result, it is provided with the revolving force of the lower roll 30 of recess 30c
Easily act on strand St, therefore, it is possible to effectively downstream layback pull out strand St.
In the present embodiment, when being observed along the direction with the orthogonal axe of main body 30a, recess
The profile of 30c is in arc-shaped.Therefore, depressing especially circular strand St using strand screwdown gear 1
When, the revolving force of lower roll 30 easily acts on strand St.Thus, it is possible to more effectively downstream layback pulls out
Strand St.
In the present embodiment, it is provided with ridge 30b in the recess 30c of lower roll 30, the leading of ridge 30b
The position at the top (top) radially of body 30a is roughly the same with the position of the outer peripheral face of main body 30a.
Therefore, as shown in (a)～(c) of Fig. 7, for circular strand St, strand St can configured
Strand St is depressed while in recess 30c.On the other hand, as shown in figure 14, for the strand St of rectangle,
Can be with outer surface (lower surface in Figure 14) outer peripheral face and ridge 30b with lower roll 30 respectively of strand St
Top abut against state pressure strand St.Thus, it is possible to using same strand screwdown gear 1 to square
Multiple strand St of different shapes such as shape, circle is depressed.Result it is not necessary in order to process not similar shape
The strand St of shape and change roller of strand screwdown gear 1 etc. operation.
More than, it is described in detail by presently filed embodiment but it is also possible to the model of purport in the present invention
Enclose and interior various modifications are carried out to described embodiment.For example, recess 30c can also include having two with
The arc-shaped outer rim of upper different radius of curvature.Specifically it is also possible to (a), (b) institute as Figure 15
Show that like that, when being observed along the direction with the orthogonal axe of main body 30a, the profile of recess 30c includes
Arc-shaped outer rim 30c1 (the 1st arc-shaped outer rim) positioned at that side of axis and be located at ratio arc-shaped outer rim
30c1 position in the outer part and radius of curvature is more than outside the arc-shaped of radius of curvature of arc-shaped outer rim 30c1
Edge 30c2 (the 2nd arc-shaped outer rim).In this case, the circle that arc-shaped outer rim 30c2 can support
The diameter of the strand St of the circle that can support with diameter greater than arc-shaped outer rim 30c1 of strand St.Therefore,
The strand St of two different-diameters can be depressed using same strand screwdown gear 1.Result it is not necessary to be
Process the strand St of different-diameter and change the lower roll 30 grade operation of strand screwdown gear 1.
Can also be that drive mechanism 40A, 40B makes one of upper roller 20 and lower roll 30 or both liftings,
So that upper roller 20 is close to each other with lower roll 30 and separates.
In the present embodiment, it is respectively equipped with ridge 20b, 30b in upper roller 20 and lower roll 30, but as long as
At least one of upper roller 20 and lower roll 30 are provided with ridge.
In the present embodiment, it is structured to support the recess 30c of strand St located at lower roll 30, but both may be used
To be provided with, at least one of upper roller 20 and lower roll 30, the recess being structured to support strand St, also may be used
To be not provided with such recess.
As long as detector 50A, 50B can detect the middle position in the Y direction of strand St, just not
It is defined in the structure of present embodiment.For example, both can be contact as the present embodiment position
The contactless position sensor such as sensor or laser sensor.
Strand screwdown gear 1 can not only depress circle, the strand St of rectangle can also depress other shapes
Strand St (for example, square, oval).
Slighter compress device can also be configured between drawing apparatus for correcting 103 and strand screwdown gear 1.Light pressure
Lower device be in order to suppress center segregation that strand St produces in its process of setting and by predetermined loading
Put on the device of strand St.
Can also be that control unit 70 controls travel mechanism 60 to make support 10 mobile, so that ridge 20b,
Y direction (the strand being located proximate to strand St in the Y direction (width of strand St) of 30b
The width of St) on middle position.In this case it is also possible to attached to the middle body of strand St
Closely carry out suitable pressure, therefore, it is possible to suppress the strand St when reducing the empty Cav producing in strand St
Bend.
Claims (8)
1. a kind of strand screwdown gear, this strand screwdown gear includes：
Support；
1st roller and the 2nd roller, the 1st roller and the 2nd roller are kept in the way of can rotating with respect to described support
In described support, pressurize for the strand after clamping solidification and to the strand after this solidification；
Drive mechanism, consists of for driving at least one of described 1st roller and the 2nd roller, so that institute
State the 1st roller and the 2nd roller close to each other and separate；
Detector, consist of can detect described strand positioned at than described 1st roller and the top trip of the 2nd roller
Middle position on the width of the part of side；
Travel mechanism, consists of for making described support move along described width；And
Control unit, wherein,
It is provided with along at least in the 1st roller and the 2nd roller at least one of described 1st roller and the 2nd roller
The ridge of the circumferentially extending ring-type of person,
Described control unit controls described travel mechanism so that described support is moved, so that described ridge is described
On the described width being detected by described detector being located proximate to described strand on width
Described middle position.
2. strand screwdown gear according to claim 1, wherein,
Described control unit controls described travel mechanism so that described support is moved, so that described ridge is described
Institute on the described width being detected by described detector of the position on width and described strand
State middle position substantially uniform.
3. strand screwdown gear according to claim 1 and 2, wherein,
It is provided with recess in the main body of at least one of described 1st roller and the 2nd roller, this recess is structured to
Support described strand,
Described recess is circumferentially extending along described main body.
4. strand screwdown gear according to claim 1 and 2, wherein,
It is provided with recess in the main body of at least one of described 1st roller and the 2nd roller, this recess is structured to
Support described strand,
Described recess is circumferentially extending along described main body,
Described ridge is located in described recess,
The position at the top radially in described main body of described ridge and the outer peripheral face of described main body
Position is roughly the same.
5. strand screwdown gear according to claim 3, wherein,
When being observed along the direction with the orthogonal axe of described main body, it is structured to support circle
The profile of the described recess of described strand is in arc-shaped.
6. strand screwdown gear according to claim 4, wherein,
When being observed along the direction with the orthogonal axe of described main body, it is structured to support circle
The profile of the described recess of described strand is in arc-shaped.
7. strand screwdown gear according to claim 5, wherein,
When being observed along the direction with the orthogonal axe of described main body, it is structured to support circle
The profile of the described recess of described strand includes：1st arc-shaped outer rim, it is located at that side of described axis；
And the 2nd arc-shaped outer rim, it is located at than described 1st arc-shaped outer rim position in the outer part and radius of curvature
Radius of curvature more than described 1st arc-shaped outer rim.
8. strand screwdown gear according to claim 6, wherein,
When being observed along the direction with the orthogonal axe of described main body, it is structured to support circle
The profile of the described recess of described strand includes：1st arc-shaped outer rim, it is located at that side of described axis；
And the 2nd arc-shaped outer rim, it is located at than described 1st arc-shaped outer rim position in the outer part and radius of curvature
Radius of curvature more than described 1st arc-shaped outer rim.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510463547.XA CN106392031B (en) | 2015-07-31 | 2015-07-31 | Strand screwdown gear |
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|---|---|---|---|
| CN201510463547.XA CN106392031B (en) | 2015-07-31 | 2015-07-31 | Strand screwdown gear |
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| CN106392031B CN106392031B (en) | 2018-04-06 |
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| CN106392031B (en) | 2018-04-06 |
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