CN210080350U - Six-roller cold rolling unit - Google Patents

Abstract

The utility model relates to a rolling mill technical field discloses a six roller cold rolling units very much, and it includes the backing roll on both sides, two middle rollers and two working rolls, and middle roller includes main roll body, and main roll body both ends are equipped with interior chamfer respectively, and interior chamfer external connection auxiliary roll body, the interior chamfer and the auxiliary roll body at main roll body both ends are the same, and interior chamfer length is 80 millimeters, and the degree of depth is 0.5 millimeter. The auxiliary roller body consists of a straight section and an outer chamfer angle, and the length of the auxiliary roller body is 295 mm. The length of the outer chamfer is 10 mm and the angle is 45 degrees. Through the technical design to middle roller roll type structure, the batch rolling of the 750mm chilled rolls of the 1200 rolling mill is guaranteed, meanwhile, the long-term stable use of the roll can be guaranteed through a new structural form, damage to the working roll and roll explosion caused by contact fatigue of the edge of the working roll and the non-chamfered end of the middle roll are overcome, and a series of losses such as belt breakage, steel adhesion, shutdown and the like caused by roll explosion are avoided.

Description

Six-roller cold rolling unit

Technical Field

The utility model relates to a rolling equipment technical field, in particular to six roller cold rolling units.

Background

The iron and steel industry is the basic industry of the country and plays a very important role in national production and life. The six-roller cold rolling mill is important production equipment in the ferrous metallurgy industry, a steel plate is rolled from thick to thin by applying strong rolling force to the steel plate, and plastic deformation in the thickness direction of the steel coil is realized. The roll system of the six-roll cold rolling mill comprises 6 rolls, which are divided into three roll types of a working roll, a middle roll and a supporting roll. In addition, the intermediate roll is located between the work roll and the back-up roll, and plays an important role in rolling the plate profile of the strip steel. At present, when a 1200-model rolling mill rolls strip steel with the strip surface width of 750mm, the problems that two ends of an upper working roll and a lower working roll are contacted and mutually influenced and interfered, and the contact positions of the working rolls and a middle roll are damaged to cause roll peeling are easily caused. The existence of the two problems causes that the rolling mill of the type can not roll 750mm band steel in batch, the rolling product specification of the 1200 rolling mill is limited, and if the rolling mill is forced, the consumption of the roller is large, the cost is high, and the loss is not paid.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a remedy prior art's defect provides a six roller cold rolling units that are difficult for droing, easy to operate.

The utility model discloses a realize through following technical scheme:

the utility model provides a six roller cold rolling unit, includes the backing roll on both sides, and two backing roll inboards are two middle rolls, are two working rolls between two middle rolls, middle roll includes main shaft, main shaft both ends are equipped with interior chamfer respectively, interior chamfer outer joint auxiliary roll body, characterized by: the inner chamfers at two ends of the main roller body are the same as those of the auxiliary roller body.

The length of the inner chamfer is 80 mm, and the depth is 0.5 mm.

The length of the auxiliary roller body is 295 mm, and the auxiliary roller body consists of a straight section and an outer chamfer.

The length of the outer chamfer is 10 millimeters.

The angle of the outer chamfer is 45 °.

The utility model has the advantages that:

the auxiliary roll body length inequality at former main roll body both ends, as shown in fig. 5, fig. 6 to be unilateral chamfer, the utility model discloses change original unilateral chamfer asymmetric roll type into bilateral chamfer symmetric roll type, guaranteed the batch rolling of 1200 rolling mill 750mm chilled coil, can guarantee the long-term stable use of roll through new structural style simultaneously, overcome because of the tired damage and the roller of exploding that leads to of contact of work roll limit portion and middle roller non-chamfer end, avoid because of a series of losses such as the broken strip that the roller of exploding caused glues the steel and shuts down. Finally, the 1200 rolling mill can stably roll 750mm strip steel and reduce the production cost.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a front view of the intermediate roll;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is a schematic front view of a prior art six-roll cold rolling mill;

fig. 6 is a front view schematically showing the structure of an intermediate roller in the prior art.

In the figure, 1 supporting roll, 2 working rolls, 3 middle rolls, 31 roll bodies, 32 inner chamfers, 33 straight sections and 34 outer chamfers.

Detailed Description

The attached drawings are specific embodiments of the invention. As shown in fig. 1 to 4, the six-roll cold rolling mill train has a total of six rolls, namely, a supporting roll 1 on the upper side and a supporting roll 1 on the lower side, two middle rolls 3 on the inner sides of the two supporting rolls 1, two working rolls 2 between the two middle rolls 3, the supporting roll 1 and the working rolls 2 are the same as the existing ones and do not change, the middle rolls 3 are originally asymmetric on both sides and are now changed to be symmetric, each middle roll 3 comprises a main roll body 31, inner chamfers 32 are respectively arranged on both ends of the main roll body 31, the inner chamfers 32 are externally connected with auxiliary roll bodies, wherein the length of each inner chamfer is 80 mm, the depth is 0.5 mm, and as shown in fig. 3, the depth refers to the difference between the radii of a large circle and a small circle; the auxiliary roller body is composed of a straight section 33 and an outer chamfer 34, the total length of the straight section 33 and the outer chamfer 34 is 295 mm, wherein the length of the straight section 33 is 285 mm, the length of the outer chamfer 34 is 10 mm, as shown in fig. 4, and the angle of the outer chamfer 34 is 45 °.

Other technical features than those described in the specification are known to those skilled in the art.

Claims (5)

1. The utility model provides a six roller cold rolling units, includes backing roll (1) on both sides, and two backing roll (1) inboards are two middle rollers (3), are two work rolls (2) between two middle rollers (3), middle roller (3) are including main shaft (31), main shaft (31) both ends are equipped with interior chamfer (32) respectively, interior chamfer (32) outer joint auxiliary shaft, characterized by: the inner chamfers (32) at the two ends of the main roller body (31) are the same as those of the auxiliary roller body.

2. A six-high cold rolling train according to claim 1, wherein the internal chamfer (32) has a length of 80 mm and a depth of 0.5 mm.

3. A six-high cold rolling train according to claim 1, wherein the length of the auxiliary roll body is 295 mm, the auxiliary roll body being composed of a straight section (33) and an outer chamfer (34).

4. A six-high cold rolling train according to claim 3, wherein the length of the outer chamfer (34) is 10 mm.

5. A six-roll cold rolling train according to claim 4, wherein the angle of the outer chamfer (34) is 45 °.

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