CN101704036B - Drum of cold-rolled strip coiler - Google Patents

Abstract

The invention belongs to the technical field of forming, and relates to a cold-rolled strip coiler reel. In the present invention, the axial oblique wedge is installed on the hollow main shaft, the radial oblique wedge is installed on the axial oblique wedge, and the two ends of the multi-half fan block are supported on the radial oblique wedge, and are connected to the hollow main shaft through a spring body; the core The shaft is installed in the hollow main shaft, one end is connected with the expansion and contraction mechanism through the connecting sleeve, and the other end is connected with the axial wedge through the connecting body. The invention is suitable for the requirements of thin strips and high-quality coiled strips, so as to adapt to different thicknesses of strips and reduce coiling rolls of strips. The reel can meet the requirements of centering movement of the edge of the coiled strip. The reel of the present invention adopts a simple and reliable connection method in mechanism, and all its parts are easy to assemble and process, and all sides are fully processed, which not only ensures the cylindricity and uniformity of the reel, but also ensures the weight of the reel. Lightweight and strong dynamic compensation ability to meet the purpose of modern production.

Description

A cold-rolled strip coiler reel

technical field

The invention belongs to the technical field of forming, and relates to a cold-rolled strip coiler reel.

Background technique

In the production of strip cold rolling and cold rolling follow-up finishing line, various units need to be uncoiled and coiled, and the demand for corresponding coils is inseparable. In existing actual production, square pyramid shaft reels are often used for heavy loads with high tension, and wedge sleeve reels are often used for light loads with small tensions. However, the moment of inertia of this type of reel and the The structural defect that the bonding area cannot be completely closed makes the roundness and quality uniformity of this type of reel poor, and it is not suitable for the production line of thin strips. At the same time, the clamping of the jaws of the pyramid shaft reel cannot be driven by the expansion and contraction hydraulic pressure synchronously with the multi-half fan block, but an independent drive system can only be used, which requires a large amount of maintenance and high cost for the reel.

As shown in accompanying drawing 1 and accompanying drawing 2, the cold-rolled quadrangular pyramid reel: when the strip is coiled, insert the head 3 of the strip into the jaw 2 of the cold-rolled strip coiler reel 1, because The strip steel has a certain degree of elasticity, and the strip steel elastically lifts 4 outside the jaw 2 to form a horizontal arc-shaped boss; in addition, the shape of the coiler in the coiling state is a true circle 5, while the strip steel is in a spiral shape during coiling. Line 6, the two curves do not coincide. When the strip has just bitten through the jaws, the arc-shaped boss formed with the reel makes the thickness of the next circle of strip and the elastic lift together protrude at this position, so that the next circle of strip steel forms a strip here. The transverse folding of the steel, which in the subsequent coiling, makes the strip continue to be affected by the protrusions, forming a periodic coiling folding. This kind of folding is unacceptable for strip products with high requirements. So far, due to the design and manufacture of cold-rolled strip coilers, almost all similar production plants have this defect to varying degrees. Due to the reasons of the processing equipment, means and manufacturing process in the final overall processing of the reel, the reel can only be expanded to a true circle state for finishing in the final processing of the reel. And can't obtain the helix of strip coiling with simple method, even if can be processed into helix, also can only be a kind of pitch, can't satisfy the coiling needs of strip steel of different thickness. At present, although some individual coiler reels have been improved, their shape is still based on a true circle, with only a part of the transition section, and the length is insufficient. Due to structural limitations, it cannot be used for larger tension coiling. It can only reduce the number of folds and alleviate the degree of folds, but it cannot be fundamentally solved. At the same time, the moment of inertia of the reel is large, and the cylindricity and roundness are poor, which affects the coiling quality of the strip and cannot meet the high-quality requirements. Strip crimping requirements.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a cold-rolled coiler reel, a closed four-wedge reel, which can increase the co-cylindricity and cylindricity of the reel and reduce the moment of inertia, not only It is better suitable for thin strip coiling, and has a large tension coiling capacity, and at the same time, it can compensate for the convex defect caused by the initial bite of the strip. Improve the ability of the reel to take up the strip, improve the same columnarity and roundness of the coiled strip, reduce the vibration during coiling, and improve the coiling control ability of the reel, so as to achieve the production purpose of high-quality coiled strip.

The technical solution of the present invention is that the axial wedge is installed on the hollow main shaft, the radial wedge is installed on the axial wedge, and the two ends of the multi-half fan block are supported on the radial wedge, and are connected to the hollow main shaft through a spring body Above; the mandrel is installed in the hollow main shaft, one end is connected with the expansion and contraction mechanism through the connecting sleeve, and the other end is connected with the axial wedge through the connecting body.

The structure of the reel is designed to be more than half, and it is closed into a true circle after biting into the strip, and the jaw is made of elastic body. When the strip is just bitten into the jaw, it can follow the plastic bending direction of the strip, so that the reel When coiling the strip, it can fit the strip better to meet the coiling characteristics of the strip and ensure the excellent characteristics of the coiled strip.

The coiler reel with high stability and high dynamic compensation ability is an urgent need for the unit to produce high-quality and high-precision strips. Especially in high-speed production, the cylindricity and roundness of the reel have a great influence on the dynamic stability of the reel, and at the same time, it should be adjusted in time according to the actual operating conditions during the production of the unit, which requires extremely high dynamic compensation capabilities of the reel. Therefore, the development and design of high-quality reels with good cylindricity and roundness, strong dynamic compensation ability, and smaller bulges when coiling and biting is an urgent demand for production, and it is also a must for high-quality, high-precision strip production. tool. The multi-half fan-shaped block of the present invention is installed on the radial wedge, and the outer circles of the multi-half fan-shaped block and the radial wedge are processed from the same true circle. , to ensure the cylindricity of the reel and the processing requirements of the same cylinder; the radial wedge is installed on the axial wedge, and the axial wedge is installed on the hollow main shaft, and the axial wedge is mainly used for axial movement , which can drive the radial expansion and contraction of the reel; the mandrel is installed in the hollow main shaft, and one end is connected with the axial wedge, and the other end is connected with the expansion and contraction mechanism. A jaw plate is installed in one of the radial wedges, and the jaw plate is supported by a spring. The jaw area is designed with a plastic bending arc according to the characteristics of the strip and the thickness of the coiled strip. After the material is lifted, the strip produces plastic bending and can be attached along the jaw area to reduce the bulge of the strip and enhance the stability of the roll.

The hollow heavy-duty main shaft, radial wedge, axial wedge, jaw plate, fan-shaped plate, spring body and expansion-contraction mechanism adopted in the present invention can realize the minimum material bite during shrinkage and the simultaneous expansion to the maximum with the belt The change of the thickness of the material produces different clamping forces. With the tension of the strip and the rotation of the reel, the strip is forced to be close to the bite area of the jaws of the reel, so that the strip can be well Fit the surface of the reel to reduce the bulging of the strip in the nip area of the reel. At the same time, the multi-half sector block interacts mechanically with the radial wedge. When the radial wedge moves a certain displacement, it will force the sector to move quickly to the co-circle position according to a certain relationship, and all the radial wedges move synchronously. , so that the cylindricity and co-existence of the reel of the coiler can be well guaranteed. The reel is well adapted to thin strips and occasions where the dynamic capacity is extremely high.

The present invention is applicable to the coiling of thin strips and strip coilers with high requirements for dynamic compensation ability, so as to adapt to curling bites of different strip thicknesses, and less bulging and dynamic unbalance in the bite area of the jaws. Defects, can be widely used in small and medium tension and thin strip coiling production equipment.

Compared with prior art, the present invention has following advantage:

(1) The cylindricity and coaxiality of the reel of the coiler are improved. Because all multi-half type sector blocks, radial wedges, axial wedges and all relevant connecting parts of the present invention are all processed parts, the movement of its multi-half type sector blocks moves with the radial wedge according to the characteristics of inherent mechanical structure. The same position, so that the roundness and coaxiality of the reel will not change after one-time processing and forming. In order to improve the inherent characteristics of the long-term use of the roll, and enhance the curl control ability of the roll.

(2) The dynamic compensation ability of the reel is improved. Since the hollow main shaft, multi-half fan-shaped block, radial wedge, axial wedge and related parts of the present invention are all thin-walled forged steel parts, compared with the conventional casting reel, the utility model of the present invention is light in weight, The strength is high, the moment of inertia is small, and the dynamic ability of its coiling is stable. In order to meet the requirements of high-quality coiling quality of thin strips.

(3) Easy maintenance and easy disassembly. Since the multi-half fan-shaped block of the present invention is supported on the radial wedge by the spring body, the radial wedge and the axial wedge are directly placed in the hollow main shaft groove, and disassembly and adjustment only need to adjust the spring body at the outer end. Its operation is convenient and free, and the precision is easy to guarantee.

The invention is suitable for occasions with small and medium tension, thin coiled strips and high requirements on the quality of coiled strips, so as to meet the requirements for producing high-precision and high-quality cold-rolled strips.

Description of drawings

Fig. 1 is a radial cross-sectional structure diagram of an existing cold-rolled reel.

Fig. 2 is a crimping trend diagram of the existing cold-rolled reel strip.

Fig. 3 is an axial sectional structure diagram of the coiler drum of the present invention.

Fig. 4 is an A-A radial sectional view of the reel of the coiler of the present invention.

In the figure, part 1 is the reel; part 2 is the jaw of the reel; part 3 is the head of the strip; part 4 is the bulging boss of the reel curled strip; part 5 is the outer circle of the reel; part 6 is Strip winding line; item 7 is the spring body; item 8 is the multi-half fan block; item 9 is the jaw plate; item 10 is the elastic body of the jaw; item 11 is the radial wedge; item 12 is the hollow main shaft; item 13 is an axial wedge; piece 14 is a mandrel; piece 15 is a connecting sleeve; piece 16 is an expansion-contraction mechanism; piece 17 is a connecting body.

Detailed ways

According to accompanying drawing 3,4 the present invention is described further as follows:

The hollow main shaft 12 is the main receiving body of the present invention, supporting the axial wedge 13 and the radial wedge 11 and the like. The axial wedge 13 is placed in the groove of the hollow main shaft 12, the radial wedge 11 is installed on the axial wedge 13; the multi-half sector block 8 is supported on the radial wedge 11, and is connected to the hollow main shaft through the spring body 7 12; the jaw plate 9 is installed in the radial wedge 11 through the elastic body 10; the mandrel 14 is installed in the hollow main shaft 12, one end of which is connected with the axial wedge 13 through the connecting body 17, and the other end is connected The sleeve 15 is connected with the expansion-contraction mechanism 16; the expansion-contraction mechanism 16 is installed on the hollow main shaft 12.

The expansion and contraction mechanism 16 pushes the connecting mandrel 14 to drive the displacement of the axial wedge 13, and the axial movement of the axial wedge 13 drives the radial movement of the radial wedge 11; the movement of the radial wedge 11 further drives the multi-half sector Expansion and contraction of block 8. Since the mutual movement of the axial wedge 13, the radial wedge 11 and the multi-half sector block 8 is carried out strictly according to the predetermined relationship, the inherent characteristics of the expansion and contraction of the reel can be guaranteed.

The jaw plate 9 is installed in one of the radial wedges 11 through the elastic body 10. The closing of the jaw plate 9 moves synchronously with the radial wedge 11 according to the thickness of the strip, and the transition curve of the jaw area is close to the strip. plastic bending curvature. The jaw opening can vary with the thickness of the strip, and forms a plastic bending curve with one of the multi-half sector blocks 8 . Adapt to the coiling requirements of different strip thicknesses and reduce the defects of strips due to material bite and bulge, so as to meet the needs of high-quality coiled strips.

The invention is suitable for the requirements of thin strips and high-quality coiled strips, so as to adapt to different thicknesses of strips and reduce coiling rolls of strips. The reel can meet the requirements of centering movement of the edge of the coiled strip. The reel of the present invention adopts a simple and reliable connection method in mechanism, and all its parts are easy to assemble and process, and all sides are fully processed, which not only ensures the cylindricity and uniformity of the reel, but also ensures the weight of the reel. Lightweight and strong dynamic compensation ability to meet the purpose of modern production.

Claims (3)

1. A cold-rolled strip coiler reel, characterized in that: the axial wedge (13) is installed on the hollow main shaft (12), and the radial wedge (11) is installed on the axial wedge (13) Above, the two ends of the multi-half sector block (8) are supported on the radial wedge (11), and are connected to the hollow main shaft (12) through the spring body (7). The multi-half sector block (8) and the radial The outer circle of the wedge (11) is processed from the same true circle; the mandrel (14) is installed in the hollow main shaft (12), one end is connected with the expansion and contraction mechanism (16) through the connecting sleeve (15), and the other end is connected through the connecting body (17) is connected with the axial wedge (13); the jaw plate (9) is installed in one of the radial wedges (11) through the elastic body (10), and the jaw plate (9) is closed according to the strip material The thickness moves synchronously with the radial wedge (11), and the transition curve in the jaw area is close to the plastic bending curvature of the strip. 2. The cold-rolled strip coiler reel according to claim 1, characterized in that: the multi-half sector block (8) is connected to the hollow main shaft (12) through a spring body (7), and is supported in the radial direction On the oblique wedge (11), the multi-half fan-shaped block (8) moves along with the movement of the radial oblique wedge (11). 3. The cold-rolled strip coiler reel according to claim 1, characterized in that: the jaw plate (9) is installed in the radial wedge (11) and connected with the elastic body (10), and The jaw opening can vary with the thickness of the strip, and forms a plastic bending curve with one of the multi-half fan-shaped blocks (8). the

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