CN210816715U - Rolling mill and continuous rolling production line with same - Google Patents
Rolling mill and continuous rolling production line with same Download PDFInfo
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- CN210816715U CN210816715U CN201920967292.4U CN201920967292U CN210816715U CN 210816715 U CN210816715 U CN 210816715U CN 201920967292 U CN201920967292 U CN 201920967292U CN 210816715 U CN210816715 U CN 210816715U
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Abstract
A rolling mill and a continuous rolling production line with the rolling mill solve the problem that the position of the existing roller in the circumferential direction cannot be finely adjusted, and the continuous rolling production line comprises rolling devices which are positioned on two sides of the advancing direction of a billet to be rolled, wherein the axial direction of the rolling devices is vertical to the advancing direction of the billet, each rolling device comprises a roller and a coupler which are coaxially connected, each coupler comprises a first connecting shaft, a second connecting shaft and an inclined gear sleeve which are coaxially arranged, one end of each first connecting shaft is connected with the corresponding roller, the first connecting shafts and the corresponding rollers synchronously rotate, the other ends of the first connecting shafts are connected with the second connecting shafts and can rotate relative to the second connecting shafts, the inclined gear sleeves are sleeved on the outer sides of the connecting positions of the first connecting shafts and the second connecting shafts, the inclined gear sleeves can rotate to drive the first connecting shafts and the corresponding rollers to the second connecting shafts to rotate, and the fine adjustment of the circumferential positions of the rollers on the rolling, the screw threads on both sides of the produced deformed steel bar are connected regularly.
Description
Technical Field
The utility model relates to a screw-thread steel's apparatus for producing, in particular to rolling mill, have the continuous rolling production line of this rolling mill.
Background
With the continuous development of large-scale industrial or civil engineering such as highways, railways, hydraulic engineering and the like, in order to increase the load bearing capacity, various deformed steels and concrete are utilized to be matched and anchored in engineering, and an internal thread connector is adopted for connection between two adjacent deformed steels, so that the threaded structures on two sides of the deformed steels are required to be matched to form discontinuous external threads, for example, a deformed steel 1 ' structure shown in fig. 1, the deformed steels 1 ' can be cut on any radial section, and the end parts of the cut deformed steels 1 ' can be matched with the internal thread connector.
In the prior art, a continuous rolling production line is adopted to produce deformed steel bars 1 ', blanks are placed into a heating furnace to be heated, then are sequentially subjected to rough rolling and intermediate rolling for preforming, finally, finish rolling is performed to roll external threads on the outer surface of a preformed workpiece, the finished workpiece is cooled by a cooling bed, deformed steel bars 1' with different lengths and sizes are cut by a shearing device, and finally, the deformed steel bars are inspected and packaged.
In finish rolling of a preformed workpiece, as shown in fig. 2, a roll 2 ' is provided on each side of the workpiece, grooves 21 ' are formed in the circumferential direction of the roll 2 ' in an axial direction thereof, a plurality of transverse ribs 22 ' are formed in the grooves 21 ' in the circumferential direction of the roll 2 ', and the two rolls 2 ' are parallel to each other with the grooves 21 ' on the outer surfaces thereof aligned to form rolled holes 23 ', and in rolling, the axial direction of the workpiece is perpendicular to the axial direction of the roll 2 ', and the workpiece passes through the rolled holes 23 ' and moves in the axial direction of the rolled holes 23 ', while the two rolls 2 ' are moved in opposite directions to form external screw thread structures on the outer surfaces of the workpiece which are engaged with the transverse ribs 22 ' in the grooves 21 '. After the existing roller 2 'is installed, the relative position of the two rollers 2' is determined, and if the transverse ribs 22 'in the rolling grooves 21' on the two sides of the workpiece deviate, the threads on the two sides cannot be matched to form regular external threads after the rolling on the upper line.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a rolling mill that can finely tune the roll and have the tandem rolling production line of this rolling mill is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
a rolling mill comprises rolling devices which are arranged on two sides of a billet to be rolled in the advancing direction, the axial direction of each rolling device is perpendicular to the advancing direction of the billet, each rolling device comprises a roller and a coupler which are coaxially connected, and the rolling mill is characterized in that: the shaft coupling includes first connecting axle, second connecting axle and the skewed tooth cover of coaxial setting, the one end and the roll of first connecting axle are connected, first connecting axle rotates with the roll is synchronous, the other end of first connecting axle with the second connecting axle is connected to can rotate for this second connecting axle, the skewed tooth cover is located the outside of first connecting axle and second connecting axle junction department, the skewed tooth cover can rotate and then drive first connecting axle and roll rotate for the second connecting axle.
Preferably, the helical gear sleeve is in threaded connection with the second connecting shaft, the first connecting shaft is also in threaded connection with the second connecting shaft, and the helical gear sleeve rotates relative to the second connecting shaft to drive the first connecting shaft to move axially synchronously and simultaneously drive the first connecting shaft to rotate relative to the second connecting shaft and the helical gear sleeve.
In order to increase the accuracy of the roll adjustment, the pitch (d1) of the screw connection between the skewed tooth sleeve and the second connecting shaft is smaller than the pitch (d2) of the screw connection between the first connecting shaft and the second connecting shaft.
Preferably, marks for indicating angles are uniformly arranged in the circumferential direction of the outer surface of the skewed tooth sleeve.
Preferably, the coupling further comprises a roller end shaft sleeve, and the roller end shaft sleeve is sleeved on the outer side of the joint of the roller and the first connecting shaft and is connected with the first connecting shaft.
Preferably, the outer side of the second connecting shaft is provided with a locking piece for locking or unlocking the helical gear sleeve relative to the second connecting shaft, and further locking or unlocking the first connecting shaft relative to the second connecting shaft.
A continuous rolling production line comprises a rolling mill and a shearing mechanism, wherein the maximum arc length of a helical gear sleeve driving a roller to rotate is larger than the thread pitch of the deformed steel bar with the maximum rolling specification rolled on the continuous rolling production line.
Preferably, the shearing mechanism is located outside the outlet of the deformed steel bar of the rolling mill, the shearing mechanism comprises a shearing blade, the shearing blade can move along the radial direction of the deformed steel bar to shear the deformed steel bar, and a plurality of concave shearing grooves are formed in the cutting edge of the shearing blade.
Compared with the prior art, the utility model has the advantages of the roll on the rolling mill can rotate the fine setting, makes the screw thread that the screw-thread steel both sides that adopt this rolling mill to produce link up the rule, and the screw-thread steel that produces can be cut along radial arbitrary cross-section, and adopts the utility model provides a terminal surface of the screw-thread steel after shearing mechanism cuts levels, and no burr makes it homoenergetic be connected with female connector, and the staff can be fast and accurate rotation roll to corresponding angle, is favorable to improving the regulation efficiency of roll.
Drawings
FIG. 1 is a schematic structural diagram of a threaded steel with regular thread engagement on two sides;
FIG. 2 is a schematic view of a prior art roll configuration;
fig. 3 is a schematic cross-sectional view of a coupling according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a rolling hole in the embodiment of the present invention.
Fig. 5 is a schematic structural view of a shear blade according to an embodiment of the present invention;
in the figure, 1, a coupling; 11. a first connecting shaft; 12. a second connecting shaft; 13. a skewed tooth sleeve; 131. an internal thread; 14. a locking member; 15. a roll end shaft sleeve; 2. rolling holes; 3. a shearing blade; 31. and (6) shearing the groove.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 3 to 5, the rolling mill comprises a heating furnace for heating a billet to be rolled, a rolling mill for finish rolling the thread structure on the outer surface of the billet, a cooling bed for cooling the rolled deformed steel bar, and a shearing mechanism located behind the cooling bed, which are arranged in sequence.
The rolling mill is including being located each set of rolling device of the both sides on the billet advancing direction of treating rolling after the heating, the axial of rolling device is perpendicular with the advancing direction of billet, rolling device includes the roll, shaft coupling 1 and gear motor, shaft coupling 1 is including the first connecting axle 11 of coaxial setting, second connecting axle 12 and skewed tooth cover 13, the one end and the roll of first connecting axle 11 are connected, first connecting axle 11 rotates with the roll is synchronous, the other end and the second connecting axle 12 of first connecting axle 11 are connected, and can rotate for this second connecting axle 12, skewed tooth cover 13 cover is located the outside of first connecting axle 11 with second connecting axle 12 junction, skewed tooth cover 13 can rotate and then drive first connecting axle 11 and roll rotate for second connecting axle 12.
Specifically, the helical gear sleeve 13 is in threaded connection with the second connecting shaft 12, the first connecting shaft 11 is also in threaded connection with the second connecting shaft 12, and the helical gear sleeve 13 rotates relative to the second connecting shaft 12 to drive the first connecting shaft 11 to move axially synchronously and simultaneously drive the first connecting shaft 11 to rotate relative to the second connecting shaft 12 and the helical gear sleeve 13. The position of the internal thread 131 of the skewed tooth sleeve 13 is shown in FIG. 3. When the skewed tooth sleeve 13 is rotated and the skewed tooth sleeve 13 moves towards the direction of the roller along the second connecting shaft 12, because the second connecting shaft 12 is connected with the speed reducing motor, the second connecting shaft 12 is fixed, and the first connecting shaft 11 is subjected to thrust towards the direction of the roller, which is applied by the skewed tooth sleeve 13, so that the first connecting shaft 11 rotates towards the direction of separating from the second connecting shaft 12, and the roller is driven to rotate. When the helical gear sleeve 13 rotates and moves in a direction away from the roller along the second connecting shaft 12, the first connecting shaft 11 is subjected to thrust applied by the helical gear sleeve 13 in a direction towards the second connecting shaft 12, so that the first connecting shaft 11 rotates in a direction of screwing with the second connecting shaft 12, and the roller is driven to rotate in the opposite direction, and fine adjustment in the circumferential direction of the roller is achieved.
As shown in fig. 3, the screw pitch d1 of the screw connection between the helical gear sleeve 13 and the second connecting shaft 12 is smaller than the screw pitch d2 of the screw connection between the first connecting shaft 11 and the second connecting shaft 12, and the roller correspondingly rotates by a smaller angle through the larger rotation angle of the helical gear sleeve 13, thereby improving the adjustment precision of the roller. It should be understood by those skilled in the art that the skewed tooth sleeve 13 may also be fixedly connected to the first connecting shaft 11, and the first connecting shaft 11 rotates while the skewed tooth sleeve 13 rotates, so that the roller rotates, and the accuracy of adjusting the rotation of the roller is improved by the difference between the two thread pitches through the threaded connection between the first connecting shaft 11 and the second connecting shaft 12 and the threaded connection between the second connecting shaft 12 and the skewed tooth sleeve 13.
The locking piece 14 is arranged on the outer side of the second connecting shaft 12 and used for locking or loosening the inclined gear sleeve 13 relative to the second connecting shaft 12 and further locking or loosening the first connecting shaft 11 relative to the second connecting shaft 12, and because the rotating direction is determined when the roller works, the locking piece 14 in the embodiment can prevent the inclined gear sleeve 13 from being screwed or unscrewed from the second connecting shaft 12 when the inclined gear sleeve 13 works by abutting against one end, far away from the roller, of the inclined gear sleeve 13. It will be appreciated by those skilled in the art that the locking member 14 may be connected to the second connecting shaft 12 by bolts passing through the skewed tooth socket 13. Specifically, when the roller needs to be adjusted, the locking piece 14 for locking the skewed tooth sleeve 13 needs to be loosened, the skewed tooth sleeve 13 is rotated to perform fine adjustment on the roller, and the locking piece 14 is locked after the fine adjustment so as to ensure normal use of the roller.
The outside of first connecting axle 11 is located to the tip cover of roll, and this end of first connecting axle 11 is equipped with the keyway or adopts the flat key to be connected with the roll, makes first connecting axle 11 can move towards or keep away from the roll axial to rotate with the roll is synchronous. The coupler further comprises a roller end shaft sleeve 14, the roller end shaft sleeve 14 is connected with the first connecting shaft 11, sleeved on the outer side of the joint of the roller and the first connecting shaft 11 and synchronously rotated with the roller and the first connecting shaft 11, and the roller end shaft sleeve 14 can ensure the stability of the roller during working.
The outer surface of the roller is axially provided with a plurality of rolling grooves at intervals, a plurality of transverse ribs are arranged in the rolling grooves along the circumferential direction of the roller, the two rollers are parallel and align the rolling grooves on the outer surface to form a rolling hole 2, and a structural schematic diagram of the rolling hole 2 is shown in figure 4.
Evenly arranged is used for instructing the sign of angle on the circumferencial direction of 13 surfaces of skewed tooth cover, and this sign can adopt scale mark or round hole etc. through the setting of sign, and the staff can be fast and the rotatory corresponding angle of 13 oblique tooth covers of accurate control, and the sign in the 13 outside of skewed tooth cover in this embodiment adopts the round hole, when rotating skewed tooth cover 13, inserts a metal pole in the round hole that corresponds, utilizes the transmission of metal pole to rotate skewed tooth cover 13, more laborsaving. Preferably, the arc length corresponding to the maximum angle at which the skewed tooth sleeve 13 drives the roller to rotate is greater than the thread pitch of the deformed steel bar of the maximum rolling specification rolled on the continuous rolling production line.
The shearing mechanism is located the deformed steel bar export outside of rolling mill, and shearing mechanism is including shearing blade 3, and shearing blade 3 can follow the radial cross section direction motion of deformed steel bar and then shear the deformed steel bar to be equipped with a plurality of sunken shearing grooves 31 on the cutting edge of shearing blade 3, make the terminal surface deformation of the deformed steel bar of cutting less, no burr can be connected with female connector.
A method of rolling deformed steel bar, characterized by: the method comprises the following specific steps:
1) heating and rolling the steel billet, cooling and shearing to obtain a deformed steel bar finished product with a certain length;
2) selecting corresponding threads on two sides of a deformed steel bar finished product, measuring the actual axial distance X between two points of the two threads, and calculating the difference value with the designed axial distance D between the two points to obtain the arc length L of the single-side roller needing to rotate as follows: l ═ X-D |; wherein the positive and negative of the calculated difference determine the rotation direction of the skewed tooth sleeve and the roller;
3) calculating the angle (α) of the inclined gear sleeve 13 required to rotate according to the arc length of the single-side roller required to rotate;
4) rotating the inclined gear sleeve 13 to obtain the angle (α) calculated in the step 3) to finish fine adjustment;
5) and (5) repeating the step 1) and rolling the deformed steel bar finished product.
The angle of rotation required for the skewed tooth sleeve 13 is:
β 1 represents the angle of rotation of the helical gear sleeve 13, and R represents the radius of the roller.
The number of the marks on the circumference direction of the helical gear sleeve 13 is N, and the number (N) of the marks which need to be rotated by the helical gear sleeve 13 is calculated as follows:
the staff can adjust the roller quickly to rotate a proper angle only by rotating the corresponding number of the marks, and fine adjustment is completed.
Specifically, the steel billet in the step 1) and the subsequent production of the deformed steel bar is placed into a heating furnace for heating, the heating comprises a preheating section, a heating section I, a heating section II and a soaking section, wherein the temperature of the preheating section is less than or equal to 850 ℃, the temperature of the heating section I is 900-1000 ℃, the temperature of the heating section II is 1000-1050 ℃, and the temperature of the soaking section is 1020-1080 ℃. The starting temperature of rolling is 950-1000 ℃, the temperature at the end is less than or equal to 900 ℃, the medium-low temperature production is realized, the effects of relatively refining grains, uniform structure performance and improving the mechanical property of a finished product are achieved. And naturally cooling the rolled deformed steel bar in a cooling bed, and shearing the deformed steel bar to obtain a deformed steel bar finished product with a certain length after the temperature of the deformed steel bar is less than or equal to 150 ℃.
Step 1) and before the production of the subsequent production of the deformed steel bar, the continuous rolling production line is required to be detected to meet the preset working condition, so that the billet inlet and the deformed steel bar outlet after rolling are on the same central axis and are kept horizontal in the rolling stage.
Compared with the prior art, the utility model has the advantages of the roll on the rolling mill can rotate the fine setting, makes the screw thread that the screw-thread steel both sides that adopt this rolling mill to produce link up the rule, and the screw-thread steel that produces can be cut along radial arbitrary cross-section, and adopts the utility model provides a terminal surface of the screw-thread steel after shearing mechanism cuts levels, and no burr makes it homoenergetic be connected with female connector, and the staff can be fast and accurate rotation roll to corresponding angle is favorable to improving production efficiency.
Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A rolling mill comprises rolling devices which are arranged on two sides of a billet to be rolled in the advancing direction, the axial direction of each rolling device is perpendicular to the advancing direction of the billet, each rolling device comprises a roller and a coupling (1) which are coaxially connected, and the rolling mill is characterized in that: the coupler (1) comprises a first connecting shaft (11), a second connecting shaft (12) and an inclined gear sleeve (13) which are coaxially arranged, one end of the first connecting shaft (11) is connected with the roller, the first connecting shaft (11) and the roller synchronously rotate, the other end of the first connecting shaft (11) is connected with the second connecting shaft (12) and can rotate relative to the second connecting shaft (12), the inclined gear sleeve (13) is sleeved on the outer side of the joint of the first connecting shaft (11) and the second connecting shaft (12), and the inclined gear sleeve (13) can rotate to drive the first connecting shaft (11) and the roller to rotate relative to the second connecting shaft (12).
2. The rolling mill of claim 1, wherein: the oblique tooth sleeve (13) is in threaded connection with the second connecting shaft (12), the first connecting shaft (11) is also in threaded connection with the second connecting shaft (12), and the oblique tooth sleeve (13) rotates relative to the second connecting shaft (12) to drive the first connecting shaft (11) to move axially synchronously and simultaneously drive the first connecting shaft (11) to rotate relative to the second connecting shaft (12) and the oblique tooth sleeve (13).
3. The rolling mill of claim 2, wherein: the thread pitch (d1) of the threaded connection between the helical gear sleeve (13) and the second connecting shaft (12) is smaller than the thread pitch (d2) of the threaded connection between the first connecting shaft (11) and the second connecting shaft (12).
4. The rolling mill of claim 3, wherein: marks for indicating angles are uniformly arranged on the outer surface of the skewed tooth sleeve (13) in the circumferential direction.
5. The rolling mill of claim 1, wherein: the coupler also comprises a roller end shaft sleeve (14), wherein the roller end shaft sleeve (14) is sleeved on the outer side of the joint of the roller and the first connecting shaft (11) and is connected with the first connecting shaft (11).
6. The rolling mill of claim 1, wherein: and a locking piece is arranged on the outer side of the second connecting shaft (12) and used for locking or unlocking the skewed tooth sleeve (13) relative to the second connecting shaft (12) and further locking or unlocking the first connecting shaft (11) relative to the second connecting shaft (12).
7. A continuous rolling production line is characterized in that: comprising a rolling mill according to any one of claims 1 to 6 and a shearing mechanism, wherein the maximum arc length of the helical gear sleeve (13) for driving the roller to rotate is greater than the thread pitch of the screw-thread steel of the maximum rolling specification rolled on the continuous rolling production line.
8. The continuous rolling line of claim 7, wherein: the shearing mechanism is located outside the outlet of the deformed steel bar of the rolling mill, the shearing mechanism comprises a shearing blade (3), the shearing blade (3) can move along the radial direction of the deformed steel bar to shear the deformed steel bar, and a plurality of sunken shearing grooves (31) are formed in the cutting edge of the shearing blade (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920967292.4U CN210816715U (en) | 2019-06-25 | 2019-06-25 | Rolling mill and continuous rolling production line with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920967292.4U CN210816715U (en) | 2019-06-25 | 2019-06-25 | Rolling mill and continuous rolling production line with same |
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| CN210816715U true CN210816715U (en) | 2020-06-23 |
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| CN201920967292.4U Active CN210816715U (en) | 2019-06-25 | 2019-06-25 | Rolling mill and continuous rolling production line with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421007A (en) * | 2019-06-25 | 2019-11-08 | 江阴兴澄特种钢铁有限公司 | The method of milling train, the continuous rolling production line with the milling train and rolled threaded steel |
| CN110421007B (en) * | 2019-06-25 | 2024-05-17 | 江阴兴澄特种钢铁有限公司 | Rolling mill, continuous rolling production line with rolling mill and method for rolling deformed steel bar |
-
2019
- 2019-06-25 CN CN201920967292.4U patent/CN210816715U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421007A (en) * | 2019-06-25 | 2019-11-08 | 江阴兴澄特种钢铁有限公司 | The method of milling train, the continuous rolling production line with the milling train and rolled threaded steel |
| CN110421007B (en) * | 2019-06-25 | 2024-05-17 | 江阴兴澄特种钢铁有限公司 | Rolling mill, continuous rolling production line with rolling mill and method for rolling deformed steel bar |
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