CN116493408B - Equipment and method for middle rolling, slitting and rolling hot rolled ribbed steel bars - Google Patents
Equipment and method for middle rolling, slitting and rolling hot rolled ribbed steel bars Download PDFInfo
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- CN116493408B CN116493408B CN202310555846.0A CN202310555846A CN116493408B CN 116493408 B CN116493408 B CN 116493408B CN 202310555846 A CN202310555846 A CN 202310555846A CN 116493408 B CN116493408 B CN 116493408B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 166
- 239000010959 steel Substances 0.000 title claims abstract description 166
- 238000005096 rolling process Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims description 22
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 41
- 238000007789 sealing Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000000694 effects Effects 0.000 claims description 13
- 230000008093 supporting effect Effects 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 230000003014 reinforcing effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 229910000734 martensite Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
-
- 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 application relates to the field of ribbed steel bar processing, in particular to equipment for hot rolling ribbed steel bars by medium rolling slitting and rolling, which comprises a first guide wheel, a second guide wheel, a slitting device and a temperature control mechanism, wherein the temperature control mechanism comprises a sleeve, a first closed loop is arranged at one end of the sleeve, which is close to the first guide wheel, a second closed loop is arranged at one end of the sleeve, which is close to the slitting device, a cooling pipe fitting is arranged on the inner wall of the sleeve along the length direction of the sleeve, and a guide mechanism is further arranged at one end of the sleeve, which faces to the slitting device.
Description
Technical Field
The application relates to the field of ribbed steel bar processing, in particular to equipment for hot rolling ribbed steel bars by medium rolling slitting and rolling, and also relates to a method for hot rolling ribbed steel bars by medium rolling slitting and rolling.
Background
The surface of the ribbed steel bar produced by adopting the strong water cooling process can generate tempered martensite structure, and as the tempered martensite is destroyed in the steel bar welding process, the mechanical property of the welded ribbed steel bar can be greatly reduced, and the two methods are adopted: the other is a controlled rolling and cooling process, both the two technologies can ensure that the mechanical properties are qualified, tempered martensite is not generated on a base circle, other tissues different from ferrite and pearlite are not generated, although the controlled rolling and cooling process can well solve the contradiction between quality and alloy cost, the yield is limited, the traditional multi-line cutting steel bar production technology needs to be carried out at high temperature, and the traditional multi-line cutting steel bar production technology conflicts with the controlled rolling and cooling requirements of low temperature and high pressure, namely, the controlled rolling and cooling process is used, and the way of improving the yield is to improve the rolling speed, so that the high-speed bar technology is generated.
As described above, "low temperature and high pressure" and "rapid cooling after rolling" are the essence of the process of controlled rolling and cooling for producing hot rolled ribbed steel bars, while the splitting process must be performed at high temperature, which combine to expose the drawbacks of the conventional twin-wire process route: the rolling device can well realize rapid cooling after rolling, but is limited to high Wen Qiefen, and rolled piece materials after cutting are small, even if rolling is performed after rapid cooling, the rolling device can not achieve good effect of low-temperature large-pressure because the rolling reduction after cutting is smaller.
The existing cooling temperature control technology has a certain defect, firstly, under the condition that the required pressure and the flow of a cooling water body are kept normal and stable, the circumference of the steel bar is cooled unevenly, in the subsequent conveying process, the situation that two ends of the steel bar are warped easily occurs, so that the deformation of a steel bar rolled piece is caused, the normal operation of a rotating hub is influenced, in addition, in the temperature control device, because the steel bar rolled piece moves into temperature control rolling equipment, a large amount of air is brought in, the cooling effect of the steel bar rolled piece is poor, the requirement of the temperature control rolling technology cannot be met, and therefore, the good effect of cooling and temperature control of the steel bar rolled piece is difficult to realize.
The disclosed Chinese patent CN201821427811.X is a hot rolled ribbed bar temperature control rolling device, which comprises an inlet water and nozzle I device connected with a bolt on the inlet water and return water turbulence device, a water inlet water and nozzle II device connected with a bolt on one end of the inlet water and nozzle I device far away from the inlet water and return water turbulence device, a torrent cooler connected with a bolt on one end of the inlet water and nozzle II device far away from the inlet water and nozzle I device, and a water drainage and high-pressure air cleaning device connected with a bolt on one end of the torrent cooler far away from the inlet water and nozzle II device.
According to the patent, the steel bar is accurately guided by the guiding and backwater turbulence device, the steel bar is prevented from being deviated, the accuracy of the movement direction of the steel bar is ensured, the air carried by the ribbed steel bar is effectively prevented from entering the torrent cooler through the two nozzles by using reverse water flow, the cooling effect of liquid in the torrent cooler is ensured, however, the slitting of the steel bar is inconvenient, the situation that the end part of the steel bar is warped still occurs after the steel bar passes through the backwater turbulence device, and the steel bar is not flat is caused, so that the slitting equipment for ensuring the cooling effect of the steel bar is intact and the flatness of the steel bar is required at present.
Disclosure of Invention
According to the equipment for the middle rolling slitting rolling hot rolled ribbed steel bar, disclosed by the application, the steel bar is introduced into the equipment through the sleeve, so that the cooling pipe fitting can comprehensively cool the steel bar, the effective temperature of the steel bar is kept until the steel bar moves out of the sleeve to be contacted with the guide mechanism, and the guide mechanism moves together with the steel bar to support the part of the steel bar moved out of the sleeve, so that the warping condition of the end part of the steel bar is avoided, and the quality of the steel bar is ensured.
In order to solve the problems in the prior art, the application adopts the following technical scheme:
the application provides equipment for hot rolling ribbed steel bars through medium rolling slitting, which comprises a first guide wheel, a second guide wheel, a slitting device for slitting the steel bars, a temperature control mechanism for cooling the steel bars, and a guide mechanism for keeping the conveying effect of the steel bars straight, wherein the temperature control mechanism comprises a sleeve, the sleeve is arranged between the slitting device and the first guide wheel, one end of the sleeve, which is close to the first guide wheel, is provided with a first closed loop, one end of the sleeve, which is close to the slitting device, is provided with a second closed loop, the inner diameters of the first closed loop and the second closed loop are equal to the diameter of the steel bars, the inner diameter of the sleeve is larger than the diameter of the steel bars, the inner wall of the sleeve is provided with a cooling pipe along the length direction of the sleeve, and one end, which faces the slitting device, of the sleeve is also provided with a guide mechanism for keeping the conveying effect of the steel bars straight.
Preferably, the guiding mechanism is provided with an end sleeve assembly for supporting the reinforcing steel bar, the end sleeve assembly is arranged at the end part of the sleeve towards the cutter, the end sleeve assembly is located in the cutter, the end sleeve assembly can move along the axial direction of the sleeve, the outer side of the sleeve is provided with a moving assembly for driving the end sleeve assembly to move, and the end sleeve assembly is further provided with a control assembly for controlling the moving assembly through contact with the reinforcing steel bar.
Preferably, the cooling pipe fitting is provided with a plurality of annular pipes, the annular pipes are arranged in the sleeve at equal intervals along the axis direction of the sleeve, the annular pipes are coaxial with the sleeve, the inner diameter of each annular pipe is larger than the diameter of the reinforcing steel bar, each two adjacent annular pipes are communicated with one connecting pipe, each connecting pipe penetrates through the sleeve to be communicated with the annular pipe, a hole for the connecting pipe to penetrate through is formed in the sleeve, a water outlet for spraying water is formed in the inner wall of each annular pipe to be communicated with the inner wall of each annular pipe, a pipe inlet joint is connected to the annular pipe which is close to the first guide wheel among the plurality of annular pipes, and a pipe outlet joint is connected to the annular pipe which is close to the splitting device among the plurality of annular pipes.
Preferably, the end sleeve assembly is provided with a sleeve, the sleeve is coaxial with the sleeve, the inner diameter of the sleeve is larger than the diameter of the steel bar, a rubber sleeve is arranged in the sleeve, the inner diameter of the rubber sleeve is equal to the diameter of the steel bar, an air bag is further arranged between the rubber sleeve and the sleeve, an air port is formed in the position, corresponding to the air bag, of the sleeve, and when the air bag is in an expanded state, the rubber sleeve is in a state of clamping the steel bar.
Preferably, the moving assembly is provided with a guide cylinder, the guide cylinder is fixedly sleeved outside the sleeve, the axial direction of the guide cylinder is parallel to the axial direction of the sleeve, a guide rod inserted into the guide cylinder is arranged on the sleeve in the direction of the guide cylinder, a limit rod extending outwards through the guide cylinder is arranged at the end part of the guide rod, which faces the first guide wheel, and a strip-shaped opening for the limit rod to move is formed in the guide cylinder along the axial direction of the guide cylinder.
Preferably, the sleeve is fixedly provided with an electromagnet towards the end part of the first guide wheel, the electromagnet is of an annular structure, the middle part of the electromagnet is provided with a through hole for a reinforcing steel bar to pass through, the end part of the guide rod towards the electromagnet is provided with a magnet end with the diameter smaller than the diameter of the cylinder opening of the guide cylinder, and the surface of the electromagnet is also provided with a socket for the magnet end to be inserted into.
Preferably, the guide cylinder is provided with a sealing sleeve at a position corresponding to the strip-shaped opening, the limiting rod is arranged in the sealing sleeve, a moving space for the limiting rod to move is arranged in the sealing sleeve along the length direction of the strip-shaped opening, and an oil port communicated with the inside of the sealing sleeve is further arranged at one end of the sealing sleeve, facing the cutter.
Preferably, the control assembly is provided with a contact rod, the contact rod is arranged on the sleeve, the end part of the contact rod penetrates through the sleeve and stretches out towards the inside of the sleeve, the axis direction of the contact rod is perpendicular to the axis direction of the sleeve, a through hole for the contact rod to penetrate through is formed in the sleeve, an inductor sleeved on the contact rod is fixedly arranged on the outer wall of the sleeve and positioned at the position of the contact rod, and a spring sleeved on the contact rod is fixedly connected between the outer end of the contact rod and the inductor.
Preferably, one end of the contact rod facing the inside of the sleeve is provided with a hemispherical end, the hemispherical end protrudes out of the inner wall of the sleeve, one end of the contact rod facing the outside of the sleeve is provided with a columnar end, the diameter of the columnar end is larger than that of the contact rod, and two ends of the spring are respectively connected with the columnar end and the inductor.
The application also provides a method for rolling the hot rolled ribbed steel bar by medium rolling and slitting, which comprises the following steps:
s1, conveying the reinforcing steel bars in the direction guided by the first guide wheel and the second guide wheel, and enabling the reinforcing steel bars to pass through the sleeve;
s2, cooling the steel bars through the cooling pipe fitting;
s3, supporting the steel bar to move together with the steel bar through the guide mechanism, and keeping the steel bar in a straight state;
s4, cutting off the reinforcing steel bars through a cutter after the reinforcing steel bars move out of the sleeve to a specified length.
Compared with the prior art, the application has the beneficial effects that:
1. according to the application, the steel bar is introduced into the sleeve through the sleeve, so that the cooling pipe fitting can comprehensively cool the steel bar, the effective temperature of the steel bar is kept until the steel bar moves out of the sleeve to be contacted with the guide mechanism, the guide mechanism moves together with the steel bar to support the part of the steel bar moved out of the sleeve, the situation that the end part of the steel bar is warped is avoided, the steel bar is cooled, meanwhile, the steel bar is kept straight, and the quality of the steel bar is ensured.
2. According to the application, the end sleeve assembly is used for supporting the steel bar, when the steel bar is conveyed out of the sleeve, the steel bar part moving out of the sleeve is supported, the steel bar is kept straight, the phenomenon that the cooled part of the steel bar and the part being cooled in the sleeve warp in the conveying process is avoided, the effective cutting of the steel bar is realized, and the quality of the steel bar is ensured.
3. According to the application, through the arrangement of the annular pipes, the cooling water in the annular pipes cools the circumference of the steel bar, the cooling effect is uniformly achieved on the steel bar, and every two adjacent annular pipes are communicated through the connecting pipe, so that the steel bar can be comprehensively cooled in the annular pipes, the uniform cooling of the steel bar is realized, the cooling effect is improved, and the situation that the steel bar warps in the conveying process due to uneven cooling is avoided.
Drawings
Fig. 1 is a schematic perspective view of an apparatus for mid-rolling split-rolling a hot rolled ribbed steel bar;
fig. 2 is a schematic diagram showing a schematic diagram of a three-dimensional structure of an apparatus for slitting and rolling a hot rolled ribbed steel bar in a middle rolling process;
fig. 3 is a partial perspective sectional view of an apparatus for mid-rolling split-rolling a hot rolled ribbed steel bar;
fig. 4 is a sectional view of an apparatus for mid-rolling split-rolling a hot rolled ribbed steel bar;
fig. 5 is a schematic view showing a partial perspective structure of an apparatus for mid-rolling split-rolling a hot rolled ribbed steel bar;
fig. 6 is a perspective structural sectional view of an apparatus for mid-rolling split-rolling a hot rolled ribbed steel bar;
FIG. 7 is an enlarged schematic view at A of FIG. 4;
FIG. 8 is an enlarged schematic view at B of FIG. 4;
FIG. 9 is an enlarged schematic view at C of FIG. 3;
fig. 10 is an enlarged schematic view at D of fig. 3.
The reference numerals in the figures are:
1-a first guide wheel;
2-a second guide wheel;
3-a slicer;
4-a temperature control mechanism;
41-a sleeve;
42-a first closed loop;
43-a second closed loop;
44-cooling the pipe fitting; 441-loop; 4411-nozzle; 4412-valve plates; 442-connecting tube; 443-pipe inlet joint; 444-outlet tube joint;
5-a guiding mechanism;
51-end cap assembly; 511-a sleeve; 5111-gas port; 512-gum cover; 513-an air bag;
52-a moving assembly; 521-guiding cylinder; 522-a guide bar; 5221-stop lever; 5222-magnet ends; 523-electromagnet; 524-sealing sleeve; 5241-oil port;
53-a control assembly; 531-contact lever; 5311-hemispherical ends; 5312-a columnar tip; 532-an inductor; 533-spring;
6-reinforcing steel bars.
Detailed Description
The application will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the application and the specific objects and functions achieved.
Referring to fig. 1-5, an apparatus for hot rolling ribbed steel bar by intermediate rolling and slitting comprises a first guide wheel 1, a second guide wheel 2, a cutter 3 for slitting the steel bar 6, a temperature control mechanism 4 for cooling the steel bar 6, a sleeve 41, a first sealing ring 42 and a second sealing ring 43, wherein the first guide wheel 1 and the second guide wheel 2 are arranged between the first guide wheel 1 and the second guide wheel 2, the temperature control mechanism 4 comprises a sleeve 41, the sleeve 41 is arranged between the cutter 3 and the first guide wheel 1, one end of the sleeve 41 close to the first guide wheel 1 is provided with the first sealing ring 42, one end of the sleeve 41 close to the cutter 3 is provided with the second sealing ring 43, the inner diameters of the first sealing ring 42 and the second sealing ring 43 are equal to the diameter of the steel bar 6, the inner diameter of the sleeve 41 is larger than the diameter of the steel bar 6, the inner wall of the sleeve 41 is provided with a cooling pipe 44 along the length direction, and one end of the sleeve 41 facing the cutter 3 is further provided with a guide mechanism 5 for keeping the conveying of the steel bar 6 straight.
When slitting the reinforcing steel bar 6, firstly, the reinforcing steel bar 6 is conveyed towards the direction of the slitter 3 through the existing conveying equipment, the reinforcing steel bar 6 passes through the position between the first guide wheel 1 and the second guide wheel 2 in the conveying process, the conveying direction of the reinforcing steel bar 6 can pass through the slitter 3, the cooling pipe 44 is started along with the conveying of the reinforcing steel bar 6, the cooling pipe 44 cools the reinforcing steel bar 6 travelling in the sleeve 41, the first sealing ring 42 and the second sealing ring 43 at the two ends of the sleeve 41 play a sealing effect on the sleeve 41, the cooling pipe 44 does not flow out of cooling water injected into the sleeve 41, the reinforcing steel bar 6 passing through the sleeve 41 is cooled only until the end part of the reinforcing steel bar 6 is continuously conveyed after the sleeve 41 is contacted with the guide mechanism 5, the guide mechanism 5 moves along with the reinforcing steel bar 6, the reinforcing steel bar 6 in the conveying process plays a supporting role, the condition that warping occurs at the end part of the reinforcing steel bar 6 is avoided, the reinforcing steel bar 6 is continuously conveyed until the part of the sleeve 41 is moved out, the reinforcing steel bar 6 reaches the size required to be slit, the part of the sleeve 41 is moved out, the cooling part of the sleeve 41 is cooled, the reinforcing steel bar 6 is continuously conveyed through the slitter 6 after the reinforcing steel bar 6 is cut, and the reinforcing steel bar 6 is continuously conveyed, the reinforcing steel bar 6 is cut, and the reinforcing steel bar 6 is continuously cut, and the reinforcing steel bar 6 is cut continuously after the reinforcing steel bar 6 is conveyed.
Referring to fig. 3 to 5, the guide mechanism 5 is provided with an end cap assembly 51 for supporting the reinforcing bar 6, the end cap assembly 51 is disposed at an end of the sleeve 41 toward the slicer 3, the end cap assembly 51 is disposed in the slicer 3, the end cap assembly 51 is movable along an axial direction of the sleeve 41, a moving assembly 52 for driving the end cap assembly 51 to move is disposed at an outer side of the sleeve 41, and a control assembly 53 for controlling the moving assembly 52 by contacting the reinforcing bar 6 is further disposed on the end cap assembly 51.
When the steel bar 6 enters the guiding mechanism 5, the end of the steel bar 6 is contacted with the end sleeve assembly 51, at this time, the end sleeve assembly 51 clamps the end of the steel bar 6, along with the conveying of the steel bar 6, the end sleeve assembly 51 moves along with the steel bar 6, the end sleeve assembly 51 plays a supporting role on the steel bar 6, the steel bar 6 is kept in a straight state, the situation that warpage occurs between the part of the steel bar 6 in the sleeve 41 and the part of the steel bar 6 moving out of the sleeve 41 is avoided, along with the movement of the end sleeve assembly 51 to the end, the steel bar 6 is continuously conveyed until the part of the steel bar 6 moving out of the sleeve 41 reaches a specified length, the end sleeve assembly 51 still plays a supporting role on the steel bar 6, and along with the cutting of the steel bar 6, the movement assembly 52 drives the end sleeve assembly 51 to return to the end position of the sleeve 41, the cut steel bar 6 falls out along with the end sleeve assembly, the end sleeve assembly 51 supports the subsequent steel bar 6, and when the end of the steel bar 6 enters the end sleeve assembly 51, the steel bar 6 triggers the control assembly 53, and the control assembly 53 controls the end sleeve assembly 51 to clamp the steel bar 6, so that the conveying of the steel bar 6 can drive the end sleeve assembly to move together to support the steel bar 6.
Referring to fig. 2, 4, 5 and 6, the cooling pipe 44 is provided with a plurality of collars 441, the collars 441 are arranged in the collars 41 at equal intervals along the axial direction of the collars 41, the collars 441 are coaxial with the collars 41, the inner diameter of each collar 441 is larger than the diameter of the steel bar 6, each two adjacent collars 441 are communicated with one connecting pipe 442, each connecting pipe 442 penetrates through the collars 41 to be communicated with the collars 441, the collars 41 are provided with holes for the connecting pipes 442 to penetrate through, the inner wall of each collar 441 is communicated with the collars 441 provided with water inlets 4411 for spraying water, the collars 441 near the first guide wheel 1 are connected with pipe inlets 443, and the collars 441 near the cutter 3 are connected with pipe joints 444.
When the steel bar 6 enters the sleeve 41, the cooling pipe 44 is started, the cooling water is connected through the pipe inlet joint 443, so that the cooling water is led into the annular pipes 441, as a plurality of annular pipes 441 are communicated through the connecting pipes 442, all the annular pipes 441 are filled with the cooling water along with the cooling water, when the cooling water is filled into the annular pipes 441, the water gap 4411 is formed around the inner ring of the annular pipes 441, therefore, the cooling water in the annular pipes 441 can be sprayed out through the water gap 4411 so as to spray on the steel bar 6, the periphery of the steel bar 6 is cooled, and the water gap 4411 of each annular pipe 441 is provided with the valve plate 4412, so that when the water pressure is increased, the spraying amount of the cooling water at the water gap 4411 is large, otherwise, the spraying amount of the cooling water is small, the cooling degree of the steel bar 6 is effectively controlled, the cooling of the steel bar 6 is more thoroughly cooled, the cooling water in the steel bar 6 is avoided, the cooling water in the sleeve 41 is sucked out through the pipe joint 444 after the cooling water in the cooling process of the steel bar 6, and the cooling water in the sleeve 41 is always kept in an effective cooling state of the steel bar 6.
Referring to fig. 3 and 7, the end cap assembly 51 is provided with a sleeve 511, the sleeve 511 is coaxial with the sleeve 41, the inner diameter of the sleeve 511 is larger than the diameter of the steel bar 6, a rubber sleeve 512 is arranged in the sleeve 511, the inner diameter of the rubber sleeve 512 is equal to the diameter of the steel bar 6, an air bag 513 is further arranged between the rubber sleeve 512 and the sleeve 511, an air port 5111 is formed in the sleeve 511 at a position corresponding to the air bag 513, and when the air bag 513 is in an expanded state, the rubber sleeve 512 is in a state of clamping the steel bar 6.
When the end sleeve assembly 51 clamps the steel bar 6, the end of the steel bar 6 enters the sleeve 511, the rubber sleeve 512 in the sleeve 511 has a wrapping effect on the steel bar 6, then the air bag 513 is inflated towards the air bag 513 through the air port 5111, the air bag 513 is changed into an inflated state from a normal state, the rubber sleeve 512 is pressed on the steel bar 6 by inflation of the air bag 513, so that the steel bar 6 is clamped, and the sleeve 511 moves along with the steel bar 6 along with the conveying of the steel bar 6, so that the steel bar 6 is supported.
Referring to fig. 3 and 9, the moving assembly 52 is provided with a guide cylinder 521, the guide cylinder 521 is fixedly sleeved on the outer side of the sleeve 41, the axial direction of the guide cylinder 521 is parallel to the axial direction of the sleeve 41, a guide rod 522 inserted into the guide cylinder 521 is arranged on the sleeve 511 towards the direction of the guide cylinder 521, a limit rod 5221 extending outwards through the guide cylinder 521 is arranged at the end part of the guide rod 522 towards the first guide wheel 1, and a strip-shaped opening for moving the limit rod 5221 is arranged on the guide cylinder 521 along the axial direction of the guide cylinder.
When the sleeve 511 moves, the sleeve 511 moves in the guide cylinder 521 through the guide rod 522, the moving direction of the sleeve 511 is kept parallel to the axial direction of the sleeve 41, and in the moving process of the guide rod 522 in the guide cylinder 521, the limit rod 5221 moves in the strip-shaped opening until the limit rod 5221 moves to the end of the strip-shaped opening, the sleeve 511 stops moving along with the limit rod until the limit rod 5221 moves to the end of the strip-shaped opening, the sleeve 511 is prevented from being separated from the sleeve 41, the conveying of the reinforcing steel bar 6 is kept in a straight state all the time under the support of the sleeve 511, and the condition that the reinforcing steel bar 6 is warped due to the temperature is avoided.
Referring to fig. 9, an electromagnet 523 is fixedly arranged at the end of the sleeve 41 facing the first guide wheel 1, the electromagnet 523 has a ring structure, the middle part of the electromagnet 523 is provided with a through hole for passing the reinforcing steel bar 6, the end of the guide rod 522 facing the electromagnet 523 is provided with a magnet end 5222 with a diameter smaller than the diameter of the cylinder opening of the guide cylinder 521, and the surface of the electromagnet 523 is also provided with a socket for inserting the magnet end 5222.
When the sleeve 511 is at the end position of the sleeve 41, the steel bar 6 can be kept to enter the sleeve 511, therefore, the electromagnet 523 is in a starting state, the magnet end 5222 on the guide rod 522 is in a socket inserted in the electromagnet 523, the electromagnet 523 is electrified to absorb the magnet end 5222, so that the position of the sleeve 511 is positioned, after the steel bar 6 enters the sleeve 511, the electromagnet 523 is powered off, the sleeve 511 is unlocked, and the sleeve 511 can move along with the conveying of the steel bar 6, so that a supporting effect is achieved on the steel bar 6.
As shown in fig. 9 and 10, a sealing sleeve 524 is disposed on the guide cylinder 521 at a position corresponding to the bar-shaped opening, the limiting rod 5221 is disposed in the sealing sleeve 524, a moving space for the limiting rod 5221 to move is provided in the sealing sleeve 524 along the length direction of the bar-shaped opening, and an oil port 5241 communicating with the inside of the sealing sleeve 524 is further provided at one end of the sealing sleeve 524 facing the cutter 3.
When the sleeve 511 is moved from a state far away from the sleeve 41 to a state close to the sleeve 41, the air bag 513 is restored to a normal state, the steel bar 6 is not clamped, hydraulic oil is injected towards the oil port 5241, so that the hydraulic oil plays a pushing effect on the limit rod 5221, the sleeve 511 is pushed back to the end of the sleeve 41, the end of the subsequent steel bar 6 is ensured to smoothly enter the sleeve 511, and the support on the steel bar 6 is effectively achieved.
Referring to fig. 8, the control assembly 53 is provided with a contact lever 531, the contact lever 531 is disposed on the sleeve 511, the end portion of the contact lever 531 extends out towards the inside of the sleeve 511 through the sleeve 511, the axial direction of the contact lever 531 is perpendicular to the axial direction of the sleeve 511, a through hole through which the contact lever 531 passes is formed in the sleeve 511, an inductor 532 sleeved on the contact lever 531 is fixedly disposed on the outer wall of the sleeve 511 and at the position of the contact lever 531, and a spring 533 sleeved on the contact lever 531 is fixedly connected between the outward end of the contact lever 531 and the inductor 532.
When the reinforcing bar 6 enters the sleeve 511, the end of the reinforcing bar 6 presses the contact lever 531, thereby causing the contact lever 531 to move outwards in the through hole on the sleeve 511, so that the spring 533 is changed from a normal state to a stretched state, and since the spring 533 is connected with the sensor 532, after the sensor 532 senses the change of the spring 533, the expansion of the air bag 513 is controlled, so that the rubber sleeve 512 clamps the reinforcing bar 6, and the sleeve 511 can move together with the reinforcing bar 6.
Referring to fig. 8, one end of the contact lever 531 facing the inside of the sleeve 511 has a hemispherical end 5311, the hemispherical end 5311 protrudes from the inner wall of the sleeve 511, one end of the contact lever 531 facing the outside of the sleeve 511 has a columnar end 5312, the diameter of the columnar end 5312 is larger than that of the contact lever 531, and both ends of the spring 533 are connected to the columnar end 5312 and the inductor 532, respectively.
When the end of the contact lever 531 having the hemispherical end 5311 is in the sleeve 511, the end of the reinforcing bar 6 is in contact with the hemispherical end 5311 as the reinforcing bar 6 is conveyed, so that the contact lever 531 is pushed along with the hemispherical surface, the reinforcing bar 6 can be pushed by the contact lever 531 while being conveyed normally, and the expansion of the air bag 513 by the inductor 532 is triggered.
A method for rolling hot rolled ribbed steel bar by medium rolling and slitting comprises the following steps:
s1, conveying the reinforcing steel bars 6 in the direction guided by the first guide wheel 1 and the second guide wheel 2, and enabling the reinforcing steel bars 6 to pass through the sleeve 41;
s2, cooling the steel bar 6 through the cooling pipe fitting 44;
s3, supporting the steel bar 6 to move together with the steel bar through the guide mechanism 5, and keeping the steel bar 6 in a straight state;
s4, after the steel bar 6 moves out of the sleeve 41 to a specified length, the steel bar 6 is cut off by the cutter 3.
According to the application, the steel bar 6 is introduced into the sleeve 41, so that the cooling pipe 44 can comprehensively cool the steel bar 6, the effective temperature of the steel bar 6 is kept until the steel bar 6 moves out of the sleeve 41 to be contacted with the guide mechanism 5, and the guide mechanism 5 moves together with the steel bar 6 to support the part of the steel bar 6, which moves out of the sleeve 41, so that the warping of the end part of the steel bar 6 is avoided, and the quality of the steel bar 6 is ensured.
The foregoing examples merely illustrate one or more embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (3)
1. The equipment for middle rolling slitting rolling of the ribbed steel bar comprises a first guide wheel (1) and a second guide wheel (2) and a slitting device (3) for slitting the steel bar (6), wherein the steel bar (6) is positioned between the first guide wheel (1) and the second guide wheel (2), and the equipment is characterized by further comprising a temperature control mechanism (4) for cooling the steel bar (6), the temperature control mechanism (4) comprises a sleeve (41), the sleeve (41) is arranged between the slitting device (3) and the first guide wheel (1), one end, close to the first guide wheel (1), of the sleeve (41) is provided with a first closed loop (42), one end, close to the slitting device (3), of the sleeve (41) is provided with a second closed loop (43), the inner diameters of the first closed loop (42) and the second closed loop (43) are equal to the diameters of the steel bar (6), the inner diameters of the sleeve (41) are larger than the diameters of the steel bar (6), the inner wall of the sleeve (41) is provided with a cooling pipe (44) along the length direction, and the end, close to the slitting device (3) is provided with a guide mechanism for keeping the straight conveying effect of the steel bar (6);
the guide mechanism (5) is provided with an end sleeve assembly (51) for supporting the reinforcing steel bars (6), the end sleeve assembly (51) is arranged at the end part of the sleeve (41) towards the cutter (3), the end sleeve assembly (51) is positioned in the cutter (3), the end sleeve assembly (51) can move along the axial direction of the sleeve (41), the outer side of the sleeve (41) is provided with a moving assembly (52) for driving the end sleeve assembly (51) to move, and the end sleeve assembly (51) is further provided with a control assembly (53) for controlling the moving assembly (52) through contact with the reinforcing steel bars (6);
the end sleeve assembly (51) is provided with a sleeve (511), the sleeve (511) is coaxial with the sleeve (41), the inner diameter of the sleeve (511) is larger than the diameter of the steel bar (6), a rubber sleeve (512) is arranged in the sleeve (511), the inner diameter of the rubber sleeve (512) is equal to the diameter of the steel bar (6), an air bag (513) is further arranged between the rubber sleeve (512) and the sleeve (511), an air port (5111) is formed in the position, corresponding to the air bag (513), of the sleeve (511), and when the air bag (513) is in an expanded state, the rubber sleeve (512) is in a state of clamping the steel bar (6);
the moving assembly (52) is provided with a guide cylinder (521), the guide cylinder (521) is fixedly sleeved on the outer side of the sleeve (41), the axial direction of the guide cylinder (521) is parallel to the axial direction of the sleeve (41), a guide rod (522) inserted into the guide cylinder (521) is arranged on the sleeve (511) towards the direction of the guide cylinder (521), a limit rod (5221) extending outwards through the guide cylinder (521) is arranged at the end part of the guide rod (522) towards the first guide wheel (1), and a strip-shaped opening for the limit rod (5221) to move is formed in the guide cylinder (521) along the axial direction of the guide rod;
an electromagnet (523) is fixedly arranged at the end part of the sleeve (41) facing the first guide wheel (1), the electromagnet (523) is in a ring structure, a through hole for a reinforcing steel bar (6) to pass through is formed in the middle part of the electromagnet (523), a magnet end (5222) with the diameter smaller than the diameter of a cylinder hole of the guide cylinder (521) is arranged at the end part of the guide rod (522) facing the electromagnet (523), and a socket for the magnet end (5222) to be inserted into is formed in the surface of the electromagnet (523);
a sealing sleeve (524) is arranged on the guide cylinder (521) and corresponds to the position of the strip-shaped opening, the limiting rod (5221) is arranged in the sealing sleeve (524), a moving space for the limiting rod (5221) to move is formed in the sealing sleeve (524) along the length direction of the strip-shaped opening, and an oil port (5241) communicated with the inside of the sealing sleeve (524) is formed at one end of the sealing sleeve (524) facing the cutter (3);
the control assembly (53) is provided with a contact rod (531), the contact rod (531) is arranged on the sleeve (511), the end part of the contact rod (531) penetrates through the sleeve (511) and stretches out towards the inside of the sleeve, the axis direction of the contact rod (531) is perpendicular to the axis direction of the sleeve (511), a through hole for the contact rod (531) to penetrate through is formed in the sleeve (511), an inductor (532) sleeved on the contact rod (531) is fixedly arranged on the outer wall of the sleeve (511) and positioned at the position of the contact rod (531), and a spring (533) sleeved on the contact rod (531) is fixedly connected between the outward end of the contact rod (531) and the inductor (532);
the one end that contact lever (531) was inside towards sleeve (511) has hemispherical end (5311), hemispherical end (5311) protrusion in the inner wall of sleeve (511), and the one end that contact lever (531) was outside towards sleeve (511) has columnar end (5312), and the diameter of columnar end (5312) is greater than the diameter of contact lever (531), and the both ends of spring (533) are connected with columnar end (5312) and inductor (532) respectively.
2. The equipment for hot rolled ribbed bars by medium rolling and splitting rolling according to claim 1, characterized in that the cooling pipe (44) is provided with a plurality of annular pipes (441), the annular pipes (441) are arranged in the annular pipes (41) at equal intervals along the axial direction of the annular pipes (41), the annular pipes (441) are coaxial with the annular pipes (41), the inner diameter of each annular pipe (441) is larger than the diameter of the steel bar (6), one connecting pipe (442) is communicated between every two adjacent annular pipes (441), the connecting pipe (442) passes through the annular pipes (41) to be communicated with the annular pipes (441), holes for the connecting pipe (442) to pass through are formed in the annular pipes (41), water inlets (4411) for water supply to spray are formed in the inner wall of each annular pipe (441) to be communicated with the annular pipes (441), and pipe inlets (443) are connected to the annular pipes (441) which are close to the first guide wheels (1), and the pipe connectors (444) are connected to the annular pipes (441) which are close to the splitting device (3).
3. A method for mid-rolling split rolling hot rolled ribbed steel bar, applied to the equipment for mid-rolling split rolling hot rolled ribbed steel bar according to any one of claims 1-2, characterized by comprising the following steps:
s1, conveying the reinforcing steel bars (6) in the direction guided by the first guide wheel (1) and the second guide wheel (2), and enabling the reinforcing steel bars (6) to pass through the sleeve (41);
s2, cooling the steel bar (6) through a cooling pipe fitting (44);
s3, supporting the steel bar (6) to move together with the steel bar through the guide mechanism (5), and keeping the steel bar (6) in a straight state;
s4, cutting off the reinforcing steel bars (6) through the cutter (3) until the reinforcing steel bars (6) are moved out of the sleeve (41) to a specified length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310555846.0A CN116493408B (en) | 2023-05-17 | 2023-05-17 | Equipment and method for middle rolling, slitting and rolling hot rolled ribbed steel bars |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310555846.0A CN116493408B (en) | 2023-05-17 | 2023-05-17 | Equipment and method for middle rolling, slitting and rolling hot rolled ribbed steel bars |
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