CN100515596C - Cold Rolled Steel Coil Uncoiler Reel - Google Patents

Abstract

The invention discloses an uncoiler drum of cold-rolled coil, comprising hollow core shaft, push-pull rod, pyramid sleeve, bond trough bore, sector plate and fixture block. The pyramid sleeve is cooperated with the sector plate in internal and external wedges and they are connected by sliding block. The wedge angle is in 14degree-15degree. Concave grooves, which can be used to avoid interference with each other in movement, are set on the pyramid sleeve and the sector plate respectively. The purpose of enlarging expansion and shrinkage quantity of drum is realized under conditions that the drum diameter is small and the to-and-fro journey of push-pull rod is small. It is provided with reasonable and compact structure, convenient operation, large expansion and shrinkage quantity of drum along the radial direction and wide change range of internal diameter of incoming material steel coil so on.

Description

Cold Rolled Steel Coil Uncoiler Reel

technical field

The invention relates to a cold-rolled steel coil uncoiler reel, which belongs to metallurgical machinery technology.

Background technique

Among the many pieces of equipment in the steel rolling process, the first piece of equipment is the uncoiler that opens the billet coil. The uncoiler reel is a component of the uncoiler with a cantilevered shaft-shaped radial expansion and contraction structure, which ensures that the incoming steel coils of different specifications are matched with it and work normally. The bearing capacity of the reel and its radial expansion and contraction determine the application range, service life and stability of the rolling process equipment of the uncoiler.

At present, the radial expansion and contraction of the uncoiler reel is in the range of 30-7mm, and the wedge angle of the pyramid sleeve is in the range of 7°-12°. Due to the small range of expansion and contraction of the reel, the requirements for the change value of the inner diameter of the steel coil in the previous process are relatively strict, and its use is limited. Especially the steel coil provided by the jaw type coiler has higher jaws in its inner hole, so that the reel of the uncoiler cannot stretch into the inner hole of the steel coil and expand. The "uncoiler main shaft expansion and contraction mandrel" disclosed by Chinese Patent Authorization Notice No. CN2461677Y has a maximum axial stroke of 2100 mm, although the diameter of the mandrel varies from 1900 to 2100 mm, and the expansion and contraction amount reaches 200 mm. Undoubtedly, the above-mentioned patents have shortcomings such as unreasonable structure and inconvenient practical operation, and can only be applied to steel coils with an inner hole diameter > Φ1900mm, especially because of the long length of the mandrel and the large reciprocating stroke of the push-pull rod drive mechanism, and its scope of application is limited. limit. To sum up, the above-mentioned prior art does not meet the current industry standard technical requirements of the uncoiler reel specifications Φ625max/Φ610/Φ510min×1500mm.

Contents of the invention

The technical problem to be solved by the present invention is to provide a cold-rolled steel coil uncoiler reel with reasonable structure, convenient practical operation, large radial expansion and contraction, and wide application range, so as to overcome the deficiencies of the existing technology and meet the high efficiency requirements of the factory. production needs.

The idea of the present invention to solve the technical problem to be solved is that the radial expansion and contraction of the selected reel is ≥ 115mm. To meet the industry standard process requirements of the decoiler reel specifications Φ625max/Φ610/Φ510min×1500mm; increase the wedge angle. Under the condition of increasing the radial expansion and contraction of the reel, the axial stroke of the push-pull rod is shortened, the axial length of the reel is shortened, and the structure is more reasonable and compact; At the intersection of the sleeve and the fan-shaped plate, technical measures are taken to ensure that the reel has sufficient bearing capacity, and at the same time avoid mutual movement interference, so as to maximize the effective distance of the wedge movement and achieve the required maximum expansion and contraction. Quantity, realize original intention of the present invention.

In view of above-mentioned design, the technical scheme that the present invention solves its technical problem to be solved is:

A cold-rolled steel coil uncoiler reel, comprising a hollow mandrel with two mutually symmetrical long slot holes along the axial direction, a push-pull rod, a pyramid sleeve with at least 2 levels of outer wedge structure and at least 2 edges, The channel key, the fan-shaped plate and the block with the same inner wedge structure and the outer wedge of the pyramid sleeve and the same number of ribs as the outer wedge of the pyramid sleeve; the hollow mandrel can be rotated with the uncoiler assembly The power output shaft is connected coaxially; the push-pull rod can be connected with the reciprocating power unit and is set in the hollow mandrel and can slide in the axial direction; the hall key is set in the radial through hole of the pyramid sleeve and the long slot hole of the hollow mandrel In the radial through hole of the push-pull rod, the hall key can slide axially along with the push-pull rod along the long slot without being interfered by the long slot hole; The long keyway slides axially; between the fan-shaped plate and the inner and outer oblique wedges of the pyramid sleeve, there is a pair of dovetail-shaped slots. Dovetail groove sliding, its invention point lies in:

The inner end of the fan-shaped plate is fixedly connected with the block, and the block is engaged with the shoulder of the hollow mandrel, and the fan-shaped plate can expand and contract in the radial direction and slide;

The wedge angle α of the outer wedge of the pyramid sleeve and the inner wedge of the sector plate is within the range of 14° to 15°;

At the lowest end of the wedge of the pyramid sleeve and at the position where the movement route of the slider intersects with its outer circle, there is a groove for preventing the pyramid sleeve from interfering with the slider during the axial movement;

At the intersection of the movement route of the pyramid sleeve and the inner circle of the sector plate, there is a groove for preventing the pyramid sleeve from interfering with the sector plate during axial movement.

It can be seen from the technical scheme given above that the axial stroke of the push-pull rod is 250mm under the condition that the wedge angle of the present invention is 14° and the amount of expansion and contraction meets the technical requirements of the current industry standard of 115mm, so as to achieve a small Large stroke expansion and shrinkage, short reel length, reasonable and compact structure, and wide application range. And the light-weight design of the present invention can be implemented under the condition that the interference-avoiding groove portion has enough weight to carry the steel coil, so that the present invention is lighter in weight and more compact in structure.

A further inventive point of the present invention is:

The pyramid sleeve is a 3-level 4-edge outer wedge-shaped pyramid sleeve; the fan-shaped plate is a 3-level inner wedge-shaped fan-shaped plate, and the number of said fan-shaped plates is 4 pieces. This is preferred in the present invention. Because the 4 edges of the pyramid sleeve are arranged symmetrically at 90° between each other, the cooperation between the reel and the steel coil can be more reasonable than 2 edges or 3 edges, and the bonding force of the two is distributed more evenly, which is conducive to the normal operation of the present invention. Work. And its number of ribs is more than 4 ribs, although all can realize the object of the present invention, and the combination with steel coil inner hole is better, its structure seems very complicated, and its self-weight also will increase to some extent. This is not very beneficial to manufacturing costs, assembly maintenance and normal work.

Between the mating surface of the sector plate and the shaft shoulder of the hollow mandrel, there is also a copper block connected with the shaft shoulder or the sector plate to reduce wear of the two. Its purpose is obviously to further improve the expansion and contraction performance of the sector plate and prolong the service life.

After the above-mentioned technical solutions are implemented, the following substantive features and remarkable progress of the present invention are obvious.

1. Large radial expansion and contraction. The amount of expansion and contraction reaches 115mm, which can meet the requirements of the current uncoiler reel specifications, and has a wide range of applications;

2. The axial stroke of the push-pull rod is small. The push-pull rod has an axial stroke of 250mm under the condition of expansion and contraction of 115mm. The length of the reel is short; the axial reciprocating power unit matched with it, such as the hydraulic component, has a short stroke, and the uncoiler has a compact structure and occupies less space on the production site;

3. The ratio of radial expansion and contraction to axial stroke is large. This is unmatched by the existing technology. Solved the technical key that people have been eager to solve for a long time but failed to solve;

4. Reasonable and compact structure. Especially compared with the Chinese patent CN2461677Y, the structure of the present invention has significant progress.

5. The practical operation is simple and convenient, and the work efficiency of installing the reel is really high. There is no trouble caused by enlarging the expansion and contraction range of the reel by installing additional diameter-increasing pads on the reel as in the Chinese patent CN2461677Y.

Considering that the oblique wedge angle of the present invention is relatively large, so that the radial force of the steel coil on the reel along the oblique wedge is relatively large, and the problem of insufficient locking force between the reel and the steel coil may occur, this invention proposes , the axial reciprocating unit of the push-pull rod, such as an oil cylinder assembly, implements the axial locking of the pyramid sleeve through the push-pull rod. But it doesn't have to be. Because the wedge angle of the present invention is 15° less than the self-locking angle of the slope.

Description of drawings

Fig. 1 is a kind of specific embodiment of the present invention is the axial sectional schematic diagram of expanding state above its center line; Shown in the figure pyramid sleeve 3 and fan-shaped plate 7 are 3 levels of oblique wedge structure; The oblique wedges cooperate with each other, and there is no said slider pair 10;

FIG. 2 is a schematic cross-sectional view along line A-A of FIG. 1 . Shown in the figure that the pyramid sleeve 3 of the present invention is a 4-edge structure;

FIG. 3 is an axial sectional view of the pyramid sleeve 3 shown in FIG. 1 . Shown in the figure is the groove 3-2 that avoids the movement interference between the pyramid sleeve 3 and the slider 6, and the 3-stage outer wedge 4-edge structure of the pyramid sleeve 3;

FIG. 4 is an axial sectional view of the sector plate 7 as shown in FIG. 1 . Shown in the figure are the grooves 7-3, 7-4 to avoid the movement interference of the pyramid sleeve 3 and the fan-shaped plate 7, and the 3-stage inner wedge structure of the fan-shaped plate 7;

Fig. 5 is a reference diagram of the state in which the outer diameter of the reel of the present invention is expanded to Φ510 mm;

Fig. 6 is a reference diagram of a state in which the outer diameter of the reel is expanded to Φ610 mm according to the present invention;

Fig. 7 is a reference diagram of the state of the expanded reel of the present invention with an outer diameter of Φ625mm.

Detailed ways

The present invention will be further described below through the description of specific embodiments with reference to the accompanying drawings.

A typical specific implementation is shown in Figures 1 to 4.

A cold-rolled steel coil uncoiler reel, comprising a hollow mandrel 1 provided with two mutually symmetrical long slot holes 4 along the axial direction, a push-pull rod 2, and a pyramid with a multi-stage external wedge structure and at least 2 edges Cover 3, hall key 5, fan-shaped plate 7 and clamping block 8 that are multi-stage inner wedge structure and can be matched with pyramid sleeve 3 outer wedges with the same number of edges as pyramid sleeve 3; hollow mandrel 1 can be uncoiled The power output shaft of the rotary assembly of the machine is connected coaxially; the push-pull rod 2 can be connected with the reciprocating power unit and is arranged in the hollow mandrel 1 and can slide in the axial direction; The slotted hole 4 of the hollow mandrel 1 and the radial through hole of the push-pull rod 2 are in sliding fit with each other, and the hall key 5 can slide axially along the slotted hole 4 with the push-pull rod 2 without being interfered by the slotted hole 4; The sleeve 3 is assembled with the hollow mandrel 1 and connected through the flat key 9, the flat key 9 can slide axially along its long keyway; between the sector plate 7 and the two inner and outer wedges at the head and tail of the pyramid sleeve 3, there is a dovetail groove Block pair 10, the dovetail slide block 6 of said groove block pair 10 is fixedly connected with sector plate 7, and can slide along the dovetail groove provided by pyramid sleeve 3; , and through the clamping block 8 and the shoulder 1-1 of the hollow mandrel 1, the sector plate 7 can expand and contract in the radial direction; the outer wedge of the pyramid sleeve 3 and the inner wedge of the sector plate 7 The oblique wedge angle α is 14°; at the oblique wedge lowest end of the pyramid sleeve 3 and at the position where said slide block 6 motion path and its outer circle 3-1 intersect, there is a device for preventing the pyramid sleeve 3 from colliding with it during the axial movement process. The groove 3-2 of said slide block 6 interfering; the position where the movement path of the pyramid sleeve 3 and its inner circle 7-1, 7-2 intersect at the fan-shaped plate 7 is provided to prevent the pyramid sleeve 3 from moving in the axial direction The grooves 7-3, 7-4 interfering with the fan-shaped plate 7; the pyramid sleeve 3 is a 3-level 4-edge outer oblique wedge type pyramid sleeve; the fan-shaped plate 7 is a 3-level inner oblique wedge type fan-shaped plate, and the The number of 7 is 4 pieces; between the mating surface of the sector plate 7 and the shaft shoulder 1-1 of the hollow mandrel 1, there is also a copper block 11 connected with the shaft shoulder 1-1 to reduce the wear of both.

The 4-sided pyramid sleeve 3 of the present invention described above is recommended to be designed with an equal-strength steel structure, and its minimum wall thickness should be ≥ 20mm to ensure its rigidity and strength. The bearing weight is > 25t, which meets the uncoiling requirements of large coiled steel coils. .

The trial effect of the prototype of the present invention on the machine is very good. Under the conditions of small outer diameter of the reel and small reciprocating stroke of the push-pull rod, the purpose of large radial expansion and contraction of the reel is realized.

Claims (3)

1, a kind of uncoiler drum of cold rolled coil, comprise the hollow core shaft (1) that is provided with symmetrical 2 long slot bores (4) vertically, pull bar (2), be at least 2 grades of outer Wedge type structures and the pyramid sleeve (3) of at least 2 ribs, the key of having a hearing (5), the internally oblique wedge-type structure that equates with the outer wedge sum of series rib number average of pyramid sleeve (3) and the fanning strip (7) and the fixture block (8) that can match with the outer wedge of pyramid sleeve (3); Hollow core shaft (1) can with coaxial connection of uncoiler rotary components power output shaft; Pull bar (2) can with move back and forth power unit and be connected and be located in the hollow core shaft (1) and also can slide vertically; The key (5) of having a hearing is located in the radial direction through hole of the long slot bore (4) of the radial direction through hole of pyramid sleeve (3), hollow core shaft (1) and pull bar (2), and the key of having a hearing (5) can not be subjected to long slot bore (4) to interfere and endwisely slip along long slot bore (4) with pull bar (2); Pyramid sleeve (3) is equipped with hollow core shaft (1) and is connected by flat key (9), and flat key (9) can endwisely slip along its long keyway; Between the inside and outside wedge of fanning strip (7) and pyramid sleeve (3), be provided with swallow-tail form geosynclinal block pair (10), the swallow-tail form slide block (6) of said geosynclinal block pair (10) with fanning strip (7) fixed connection, and can slide along the set dovetail groove of pyramid sleeve (3), it is characterized in that:

A, fanning strip (7) medial extremity and fixture block (8) fixed connection, and by the shaft shoulder (1-1) the mutually clamping of fixture block (8) with hollow core shaft (1), fanning strip (7) radially breathing slides;

The oblique locking angle of the interior wedge of the outer wedge of b, said pyramid sleeve (3) and fanning strip (7) is in 14 °～15 ° scopes;

C, in the wedge least significant end of pyramid sleeve (3) and be positioned at said slide block (6) moving line and the crossing position of its cylindrical (3-1), be provided be used for avoiding pyramid sleeve (3) in moving axially process with the groove (3-2) of said slide block (6) interference;

D, fanning strip (7) be positioned at pyramid sleeve (3) moving line and its circle (7-1,7-2) intersection area, be provided be used for avoiding pyramid sleeve (3) in moving axially process with the groove (7-3,7-4) of fanning strip (7) interference.

2, uncoiler drum of cold rolled coil according to claim 1 is characterized in that: pyramid sleeve (3) is 3 grade of 4 outer Wedge type pyramid sleeve of rib; Fanning strip (7) is a Wedge type fanning strip in 3 grades, and the quantity of said fanning strip (7) is 4.

3, uncoiler drum of cold rolled coil according to claim 1 and 2, it is characterized in that: connecting between the face of the shaft shoulder (1-1) of fanning strip (7) and hollow core shaft (1) also is provided with the copper billet (11) that is used for reducing both wearing and tearing that connects with the shaft shoulder (1-1) or fanning strip (7).

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