CN210411911U

CN210411911U - Rolling equipment of high-quality and special-steel reversible cold rolling mill

Info

Publication number: CN210411911U
Application number: CN201921135410.1U
Authority: CN
Inventors: 尤磊; 苏旭涛; 刘云飞; 徐利璞; 王悦晗; 计江
Original assignee: China National Heavy Machinery Research Institute Co Ltd
Current assignee: China National Heavy Machinery Research Institute Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-04-28
Anticipated expiration: 2029-07-19

Abstract

The utility model provides a reversible cold rolling mill rolling equipment of excellent special steel, including decoiler, left coiling machine, main rolling mill, right coiling machine, the winding has the strip on the decoiler, and the strip lets in right coiling machine after passing left coiling machine and main rolling mill, still includes two pressers and two guide flattening devices, and two pressers set up respectively between left coiling machine and main rolling mill and between main rolling mill and right coiling machine, are provided with upper friction mechanism and lower friction mechanism on each presser, and the strip passes in upper friction mechanism and lower friction mechanism; the two guide flattening devices are respectively arranged at the inlet and the outlet of the main rolling mill, each guide flattening device is respectively provided with a horizontal righting mechanism and a vertical righting mechanism, and the strip passes through the horizontal righting mechanism and the vertical righting mechanism. The utility model discloses a rolling ability is strong with taking the tail rolling to take the head of the rolling mill of the reversible cold rolling mill rolling equipment of excellent special steel, and the interlude is rolling steady, ensures that the whole roll is rolling, and the product yield is high.

Description

Rolling equipment of high-quality and special-steel reversible cold rolling mill

Technical Field

The utility model belongs to the technical field of cold-rolled strip steel, concretely relates to reversible cold rolling mill rolling equipment of excellent special steel.

Background

In conventional reversing cold rolling production equipment for sheet strip, an uncoiler, an entry coiler, a rolling mill and an exit coiler are usually provided. For the hot-rolled steel coil after acid washing, in the rolling process of a coil of strip steel, a strip head is inserted into a jaw of a coiling machine, a strip tail is rolled by establishing tension between a rolling mill and the uncoiling machine and between the rolling mill and the coiling machine through friction force generated by diameter expansion of the uncoiling machine, and the strip head part and the strip tail part are not rolled because no tension is established on the strip. And the shape of the belt head and the belt tail is poor, and hydraulic shears are needed to cut off the belt head and the belt tail. If the requirement on the yield is high, the preparation is needed in advance before rolling, and the leading strip is welded on the head and the tail of the strip to reduce the length of the non-rolled part of the head and the tail and improve the yield. However, the welding itself is time-consuming as an auxiliary process, and for the rolling of the super special steel reversible cold rolling mill, the strip strength and the carbon content are very high, the welding of the leading strip is very difficult, the production time is longer, and the strength and the durability of the welding part are poor, so the leading strip is not adopted in the rolling of the super special steel reversible cold rolling mill. In addition, the material of the special high-quality steel is expensive, so that the head and the tail of the strip need to be rolled in each pass of reversible cold rolling production of the special high-quality steel, and welding leading is not adopted. The rolling of the high-quality and special steel adopts the production process, and directly faces the following problems: the strip produced by the high-quality and special steel is usually a wide-coil strip material, so after the wide coil is split, the residual stress in the wide coil is released, the shape of a split plate is extremely poor, and the wave shape of a head strip and a tail strip is particularly serious. And the excellent special steel materials such as 65Mn, SK5, GGr15 and the like have very large deformation resistance even after annealing. When the head and the tail of the strip which are hard and have extremely poor plate shapes are rolled under the condition of no tension, the strip is extremely easy to deviate and cannot be rolled, and the strip is complicated in wave shape and hard. If the rolling is performed forcibly, the strip is folded and laminated together, and the roller at the folded part is cracked. If such a leader and trailer are cut off, a waste of material is caused first, and even if such a leader and trailer is cut off, the material in the middle portion of the steel coil is poor due to the plate shape, and the similar problems as described above are caused.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is an object of the present invention to provide a high-grade reversible cold rolling mill rolling plant for overcoming the above problems or at least partially solving or alleviating the above problems.

The utility model provides a reversible cold rolling mill rolling equipment of excellent special steel, include: the uncoiler, left coiling machine, main rolling mill, right coiling machine, the coiling of uncoiler is gone up to twine has the strip, the strip passes left coiling machine with the back of main rolling mill lets in right coiling machine still includes:

the two compactors are respectively arranged between the left coiling machine and the main rolling mill and between the main rolling mill and the right coiling machine, each compactor comprises an upper support and a lower support which are connected, an upper friction mechanism is arranged on each upper support, a lower friction mechanism is arranged on each lower support, and the strip passes through the upper friction mechanism and the lower friction mechanism;

the two guide flattening devices are respectively arranged at an inlet and an outlet of the main rolling mill, each guide flattening device is respectively provided with a horizontal righting mechanism and a vertical righting mechanism, and the strip passes through the horizontal righting mechanism and the vertical righting mechanism.

The utility model discloses optional characteristic below still having.

Optionally, the lower friction mechanism comprises a lower winding roller and a lower winding roller which are arranged on the lower bracket, and the lower winding roller are in transmission connection through a first canvas belt; the upper friction mechanism comprises an upper unreeling roller and an upper reeling roller which are arranged on the upper support, the upper unreeling roller and the upper reeling roller are in transmission connection through a second canvas belt, the first canvas belt and the second canvas belt are close to each other and are in transmission back to the direction of the main rolling mill, and the belt material penetrates through the space between the first canvas belt and the second canvas belt.

Optionally, a lower ratchet wheel steering roller is further arranged on the lower bracket, and the first canvas belt bypasses the lower ratchet wheel steering roller; the upper bracket is also provided with an upper ratchet wheel steering roller, and the second canvas belt bypasses the upper ratchet wheel steering roller.

Optionally, a pressing base plate is arranged in the upper bracket, the lower surface of the pressing base plate is opposite to the inner side of the second canvas belt, and a lifting mechanism is arranged between the pressing base plate and the upper bracket.

Optionally, the lifting mechanism comprises a rotating screw rod, a vertical screw hole is formed in the upper support, the rotating screw rod is assembled in the vertical screw hole, the lower end of the rotating screw rod is rotatably connected with the upper portion of the pressing base plate, and a height adjusting hand wheel is fixedly connected to the upper end of the rotating screw rod.

Optionally, the guide flattening device comprises a box body, the horizontal centering mechanism comprises two centering blocks, the two centering blocks are respectively assembled on two sides in the box body, and the upper part of each centering block is respectively provided with a plurality of vertical rollers; the vertical righting mechanism comprises a roller frame, the roller frame is erected at the upper part of the box body, two pairs of flattening rollers are horizontally arranged on the roller frame, and the strip passes through the middle vertical rollers on the two righting blocks and then passes through each pair of flattening rollers.

Optionally, two centering guide rods and a double-threaded screw are arranged between two sides of the box body, the thread turning directions of two ends of the double-threaded screw are opposite, two centering blocks are respectively provided with two sliding holes and a screw hole, the two centering blocks are in sliding fit with the two centering guide rods through the two sliding holes, and the screw holes in the centering blocks are matched with the end portions of the double-threaded screw.

Optionally, a centering adjusting shaft is further rotatably arranged on the box body, one end of the centering adjusting shaft is connected with a centering hand wheel, and the centering adjusting shaft is in transmission connection with the double-end screw through a chain transmission mechanism.

The utility model has the advantages that:

the rolling equipment of the high-quality special steel reversible cold rolling mill increases the horizontal tension on the strip passing through the rolling equipment through the upper friction mechanism and the lower friction mechanism in the two compactors, improves the tension and the flattening force of the strip head and the strip tail when the strip is rolled, can smoothly roll the strip head and the strip tail with extremely poor shapes, ensures the rolling of a whole roll, and improves the unit yield; the utility model discloses a reversible cold rolling mill rolling equipment of excellent special steel still rights mechanism and vertical righting mechanism through the level on two guides and guards flattening device and gives in the abundant flat space of exhibition of the strip that passes from it, and strip distortion, off tracking and fold scheduling problem have been eliminated to the at utmost.

Drawings

The present invention will be described in further detail with reference to the following drawings and examples:

FIG. 1 is a schematic view of the overall structure of an embodiment of the high-grade steel reversible cold rolling mill rolling equipment of the present invention;

FIG. 2 is a schematic diagram of the construction of one embodiment of the impactor in FIG. 1;

FIG. 3 is a schematic side view of the guide and guard flattening apparatus of FIG. 1;

FIG. 4 is a schematic view of the internal structure of FIG. 3;

FIG. 5 is a left side view of FIG. 3;

FIG. 6 is a perspective view of FIG. 3;

fig. 7 is a perspective view of the centering block of fig. 3.

In the above figures: 1, unwinding a machine; 2, a left coiling machine; 3, a main rolling mill; 301 rolling a roller; 4, a right coiler; 5, a strip material; 6, a compactor; 601, an upper bracket; 602 lower support; 603 lowering a winding roll; 604, a wind-up roll; 605 a first canvas strip; 606, unwinding the roller; 607, winding up the roller; 608 a second canvas strip; 609 lower ratchet wheel steering roller; 610 upper ratchet turn roll; 611 compressing the backing plate; 612 rotating the screw; 613 a heightening hand wheel; 7, a guide flattening device; 701, a box body; 702 a righting block; 703 middle vertical rolls; 704 a roller frame; 705 flattening rolls; 706 centering the guide rod; 707 a double-head screw; 708 centering the adjustment shaft; 709 centering the hand wheel; 710 a chain drive mechanism; 711 hydraulic cylinder.

Detailed Description

Example 1

Referring to fig. 1, the utility model discloses an embodiment proposes a reversible cold rolling mill rolling equipment of excellent special steel, including decoiler 1, left coiling machine 2, main rolling mill 3, right coiling machine 4, and the winding has strip 5 on the decoiler 1, and strip 5 lets in right coiling machine 4 after passing left coiling machine 2 and main rolling mill 3, still includes: the two compactors 6 and the two guide flattening devices 7, the two compactors 6 are respectively arranged between the left coiling machine 2 and the main rolling mill 3 and between the main rolling mill 3 and the right coiling machine 4, each compactor 6 is provided with an upper friction mechanism and a lower friction mechanism, and the strip 5 passes through the upper friction mechanism and the lower friction mechanism; the two guide flattening devices 7 are respectively arranged at the inlet and the outlet of the main rolling mill 3, each guide flattening device 7 is respectively provided with a horizontal righting mechanism and a vertical righting mechanism, and the strip 5 passes through the horizontal righting mechanism and the vertical righting mechanism.

The upper friction mechanism and the lower friction mechanism on the two compactors 6 can provide horizontal tension for the strip 5 entering the main rolling mill 3, so that the strip head and the strip tail of the strip 5 can keep spreading and smooth rolling when entering the main rolling mill 3, the whole roll rolling of the strip 5 is ensured, the unit yield is improved, the two guide flattening devices 7 are respectively positioned at two sides of the main rolling mill 3, the strip 5 entering and exiting the roller 301 of the main rolling mill 3 can be horizontally and vertically centered, the influence of the upper friction mechanism and the lower friction mechanism on the compactors 6 on the tension provided by the strip 5 can provide a space for fully flattening the strip 5, and the problems of twisting, deviation, wrinkling and the like of the strip head and the strip tail of the strip are eliminated to the greatest extent.

Example 2

Referring to fig. 2, on the basis of embodiment 1, the lower friction mechanism comprises a lower winding roller 603 and a lower winding roller 604 which are arranged on a lower bracket 602, and the lower winding roller 603 and the lower winding roller 604 are in transmission connection through a first canvas belt 605; the upper friction mechanism comprises an upper unreeling roller 606 and an upper reeling roller 607 which are arranged on the upper support 601, the upper unreeling roller 606 and the upper reeling roller 607 are in transmission connection through a second canvas band 608, the first canvas band 605 and the second canvas band 608 are close to each other and are in transmission in the direction opposite to the main rolling mill 3, and the strip 5 penetrates through the first canvas band 605 and the second canvas band 608.

The lower winding roller 604 and the upper winding roller 607 are both connected with a power device such as a motor, so that the lower winding roller 604 and the upper winding roller 607 are both automatically rotated, the first canvas belt 605 and the second canvas belt 608 continuously change the friction surfaces with the strip 5, and the transmission is carried out in the direction opposite to the main rolling mill 3, so that the first canvas belt 605 and the second canvas belt 608 continuously change the friction surfaces with the strip 5, the concentrated abrasion at one position is avoided, the horizontal tension on the strip 5 can be increased, and the residual oil on the surface of the strip 5 can be removed.

Example 3

Referring to fig. 2, on the basis of embodiment 1, a lower ratchet steering roller 609 is further provided on the lower support frame 602, and the first canvas belt 605 passes around the lower ratchet steering roller 609; the upper bracket 601 is also provided with an upper ratchet turn roller 610, around which the second canvas strip 608 passes.

The lower ratchet turning roll 609 and the upper ratchet turning roll 610 can only rotate in one direction and cannot rotate reversely, so that tension on the first canvas strip 605 and the second canvas strip 608 can be guaranteed not to be affected, and friction of the first canvas strip and the second canvas strip against the belt material 5 can be kept stable.

Example 4

Referring to fig. 2, on the basis of embodiment 2 or embodiment 3, a pressing pad 611 is provided in the upper bracket 601, a lower surface of the pressing pad 611 faces an inner side of the second canvas belt 608, and a lifting mechanism is provided between the pressing pad 611 and the upper bracket 601.

The height of the pressing pad 611 is adjusted by the lifting mechanism, so that the pressing pad 611 presses the first canvas belt 605 to the belt material 5 in transmission, the resistance of the belt material 5 is increased, the tension on the belt material 5 is increased, and the wrinkles on the belt material 5 are eliminated.

Example 5

Referring to fig. 2, on the basis of embodiment 1, the lifting mechanism includes a rotating screw 612, a vertical screw hole is formed in the upper bracket 601, the rotating screw 612 is assembled in the vertical screw hole, the lower end of the rotating screw 612 is rotatably connected to the upper portion of the pressing pad 611, and an upper end of the rotating screw 612 is fixedly connected to a height-adjusting handwheel 613.

When the height-adjusting handwheel 613 is shaken, the rotating screw rod 612 can ascend or descend in the rotating process in the vertical screw hole, and further drives the pressing cushion plate 611 to ascend or descend.

Example 6

Referring to fig. 3 to 7, on the basis of embodiment 1, the guide flattening device includes a box 701, the horizontal centering mechanism includes two centering blocks 702, the two centering blocks 702 are respectively assembled on two sides in the box 701, and the upper portion of each centering block 702 is respectively provided with a plurality of neutral rollers 703; the vertical righting mechanism comprises a roller frame 704, the roller frame 704 is erected at the upper part of the box body 701, two pairs of flattening rollers 705 are horizontally arranged on the roller frame 704 in the transverse direction, and the strip 5 passes through between the vertical rollers 703 on the two righting blocks 702 and then passes through between each pair of flattening rollers 705.

The horizontal centering mechanism and the vertical centering mechanism need to simultaneously horizontally and vertically center the transferred strip, the vertical rollers 703 on the two centering blocks 702 are respectively contacted with the edges of two sides of the strip 5 to horizontally center the strip 5, the two pairs of flattening rollers 705 on the roller frame 704 are simultaneously contacted with the upper surface and the lower surface of the strip 5 to vertically center the strip 5, and the strip 5 is prevented from being distorted and deviated.

Example 7

Referring to fig. 4 and 7, on the basis of embodiment 6, two centering guide rods 706 and a double-threaded screw 707 are disposed between two sides of the box 701, the thread turning directions of two ends of the double-threaded screw 707 are opposite, two sliding holes and a screw hole are disposed on two centering blocks 702, the two centering blocks 702 are in sliding fit with the two centering guide rods 706 through the two sliding holes, and are in fit with the end of the double-threaded screw 707 through the screw hole on the centering block 702.

When the double-head screw 707 is rotated, the centering blocks 702 screwed at both ends of the double-head screw 707 can only move outwards synchronously or inwards synchronously along both ends of the centering guide rod 706 under the pushing of the screw threads, so that the distance between the two centering blocks 702 can be changed, and further, the distance between the neutral rollers 703 on the two centering blocks 702 can be changed, and the neutral rollers 703 are adapted to the width of the strip 5 and center the strip.

Example 8

Referring to fig. 4, on the basis of embodiment 7, a centering adjustment shaft 708 is further rotatably disposed on the box 701, a centering handwheel 709 is connected to one end of the centering adjustment shaft 708, and the centering adjustment shaft 708 is in transmission connection with the double-headed screw 707 through a chain transmission mechanism 710.

The centering adjusting shaft 708 is rotated by rotating the centering hand wheel 709, and the double-end screw 707 is driven to rotate by the chain transmission mechanism 710 when the centering adjusting shaft 708 rotates, so that the centering adjusting shaft 708 can be arranged at a position far away from the double-end screw 707 on the box body 701, and dense and complex mechanisms in the box body 701 are avoided.

Example 9

Referring to fig. 3, 5 and 6, on the basis of embodiment 6, hydraulic cylinders 711 are vertically fixed to two sides of the box 701 respectively, and the upper end of each hydraulic cylinder 711 is fixedly connected to one side of the roller frame 704 respectively.

The height of the roll stand 704 can be controlled by controlling the extension and contraction of the hydraulic cylinder 711, so that the gap between the two pairs of flattening rolls 705 on the roll stand 704 is aligned with the gap between the rolls 301 in the main rolling mill 3, and thus the strip 5 can be kept horizontal when entering between the rolls 301 in the main rolling mill 3, and the rolling quality of the strip 5 can be ensured.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.

Claims

1. The utility model provides a reversible cold rolling mill rolling equipment of excellent special steel, includes decoiler (1), left coiling machine (2), main rolling mill (3), right coiling machine (4), the winding has strip (5) on decoiler (1), strip (5) pass left side coiling machine (2) with let in behind main rolling mill (3) right coiling machine (4), its characterized in that still includes:

the two compactors (6) are respectively arranged between the left coiling machine (2) and the main rolling mill (3) and between the main rolling mill (3) and the right coiling machine (4), each compactor (6) comprises an upper support (601) and a lower support (602) which are connected, an upper friction mechanism is arranged on each upper support (601), a lower friction mechanism is arranged on each lower support (602), and the strip (5) penetrates through the upper friction mechanism and the lower friction mechanism;

the two guide flattening devices (7) are respectively arranged at an inlet and an outlet of the main rolling mill (3), each guide flattening device (7) is respectively provided with a horizontal centering mechanism and a vertical centering mechanism, and the strip (5) passes through the horizontal centering mechanism and the vertical centering mechanism.

2. The high-quality steel reversible cold rolling mill rolling equipment according to claim 1, characterized in that the lower friction mechanism comprises a lower winding roller (603) and a lower winding roller (604) which are arranged on the lower bracket (602), and the lower winding roller (603) and the lower winding roller (604) are in transmission connection through a first canvas belt (605); the upper friction mechanism comprises an upper unreeling roller (606) and an upper reeling roller (607) which are arranged on the upper support (601), the upper unreeling roller (606) and the upper reeling roller (607) are in transmission connection through a second canvas belt (608), the first canvas belt (605) and the second canvas belt (608) are close to each other and are in transmission in the direction opposite to the main rolling mill (3), and the strip (5) penetrates through the first canvas belt (605) and the second canvas belt (608).

3. The supertex steel reversible cold rolling mill rolling equipment according to claim 2, characterized in that a lower ratchet steering roll (609) is also provided on the lower carriage (602), the first canvas strip (605) passing around the lower ratchet steering roll (609); an upper ratchet wheel steering roller (610) is further arranged on the upper support (601), and the second canvas belt (608) bypasses the upper ratchet wheel steering roller (610).

4. The high-quality steel reversible cold-rolling mill rolling equipment according to claim 2 or 3, characterized in that a pressing pad (611) is arranged in the upper bracket (601), the lower surface of the pressing pad (611) faces the inner side of the second canvas belt (608), and a lifting mechanism is arranged between the pressing pad (611) and the upper bracket (601).

5. The rolling equipment of the high-quality steel reversible cold rolling mill according to claim 4, characterized in that the lifting mechanism comprises a rotating screw rod (612), a vertical screw hole is formed in the upper bracket (601), the rotating screw rod (612) is assembled in the vertical screw hole, the lower end of the rotating screw rod (612) is rotatably connected with the upper part of the pressing base plate (611), and the upper end of the rotating screw rod (612) is fixedly connected with a height-adjusting hand wheel (613).

6. The high-quality steel reversible cold rolling mill rolling equipment according to claim 1, characterized in that the guide flattening device comprises a box body (701), the horizontal centering mechanism comprises two centering blocks (702), the two centering blocks (702) are respectively assembled at two sides in the box body (701), and the upper part of each centering block (702) is respectively provided with a plurality of middle vertical rollers (703); the vertical centralizing mechanism comprises a roller frame (704), the roller frame (704) is erected at the upper part of the box body (701), two pairs of flattening rollers (705) are horizontally arranged on the roller frame (704), and the strip (5) passes through the middle vertical rollers (703) on the two centralizing blocks (702) and then passes through each pair of flattening rollers (705).

7. The rolling equipment of the high-quality and special-steel reversible cold rolling mill according to claim 6, characterized in that two centering guide rods (706) and a double-head screw (707) are arranged between two sides of the box body (701), the thread directions of two ends of the double-head screw (707) are opposite, two sliding holes and a screw hole are respectively arranged on the two centering blocks (702), the two centering blocks (702) are in sliding fit with the two centering guide rods (706) through the two sliding holes, and the screw hole on the centering block (702) is matched with the end part of the double-head screw (707).

8. The rolling equipment of the high-quality steel reversible cold rolling mill according to claim 7, characterized in that a centering adjusting shaft (708) is further rotatably arranged on the box body (701), one end of the centering adjusting shaft (708) is connected with a centering hand wheel (709), and the centering adjusting shaft (708) is in transmission connection with the double-end screw (707) through a chain transmission mechanism (710).