CN204817464U - Combination carbide roll - Google Patents

Abstract

The utility model relates to the technical field of rolls, in particular to a combined cemented carbide roll, which includes a mandrel, a bar roll ring, a plate roll ring, a threaded roll ring and a nut. The center of the mandrel is set as a spline shaft. Both ends of the mandrel are provided with threads, and the bar roll ring, plate roll ring and thread roll ring are all provided with spline holes, and the bar roll ring, plate roll ring and thread roll ring are installed through the spline holes in turn On the spline shaft, the nuts are installed on both ends of the mandrel through threads. The utility model makes the connection stable by setting the transmission between the spline shaft and the spline hole, and the maintenance is convenient, and it is convenient to replace the worn roller ring separately, reducing It reduces the production cost, improves the strength of the roll, prolongs the service life of the roll, saves time and effort, and improves the production efficiency.

Description

A composite cemented carbide roll

technical field

The utility model relates to the technical field of rolls, in particular to a composite cemented carbide roll.

Background technique

The roll is a tool for plastically deforming the steel, and is an important part that determines the efficiency of the rolling mill and the quality of the rolled material. The roll is an important part of the steel rolling equipment. The pressure generated when a pair of rolls roll is used to roll the steel. The existing The roll adopts an integral structure, and the wear of the roll is very serious during use. Once the wear limit is reached, the entire roll will be scrapped, resulting in waste of resources and increasing production costs. At present, there are some combination rolls, but there are unstable interconnections. Insufficient noise is generated in the center, structural design defects lead to accelerated wear, and cracks are prone to appear on the surface. In the prior art, a patent named "combined embedded rolls, application number 201420786005.7" is disclosed. The combined embedded rolls include rolls The inner core and the roll jacket matched with the roll inner core. The roll jacket is composed of a plurality of roll sections. The inner wall of the section is evenly provided with three positioning protrusions along the defense line along its length. The roll section One end of the body is provided with annular protrusions distributed along its end surface and matched with the annular groove, which can replace the worn roll section separately, save production costs, improve the strength of the roll, and facilitate maintenance. Elongated, the matching wear between the positioning convex strip and the inner core of the roll is prone to relative rotation, resulting in the failure of the positioning of the roll section and shortening the life of the roll. There is a shear force between them, and long-term rotation is likely to cause the breakage of the ring bump, resulting in damage to the roll, shortening the life of the roll, and increasing production costs. The strength is reduced, the service life of the roll is shortened, and the production cost is increased. In the prior art, only one type of steel can be rolled at a time. When different types of steel need to be rolled, the roll ring needs to be replaced. The labor intensity is high, time-consuming and laborious. affect the improvement of production efficiency.

Contents of the invention

In order to overcome the deficiencies of the roll technology in the prior art, the utility model provides a composite cemented carbide roll, which is stable in connection, easy to maintain, easy to replace worn roll rings, reduces production costs, improves the strength of the roll, and extends The service life of the roll is extended, saving time and effort, and improving production efficiency.

The technical scheme adopted by the utility model for solving the technical problem is that a combined cemented carbide roll includes a mandrel, a bar roll ring, a plate roll ring, a threaded roll ring and a nut, and the middle of the mandrel is arranged as a flower The key shaft, the two ends of the mandrel are provided with threads, the bar roll ring, the plate roll ring and the thread roll ring are all provided with spline holes, the bar roll ring, the plate roll ring and the thread roll ring are in turn It is installed on the spline shaft through the spline hole, and the nut is installed on the two ends of the mandrel through threads.

The total width of the rod roller ring, plate roller ring and threaded roller ring is longer than the length of the spline shaft.

The beneficial effect of the utility model is that a combination of cemented carbide rolls, by setting the transmission of the spline shaft and the spline hole, makes the connection stable, easy to maintain, easy to replace worn roll rings, reduces production costs, and improves The strength of the roll can extend the service life of the roll, save time and effort, and improve production efficiency.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is an overall partial sectional view of the utility model.

Fig. 2 is a schematic diagram of the appearance of the mandrel of the present invention.

Fig. 3 is a left side view of the mandrel of the present invention.

In the figure 1. mandrel, 2. bar roll ring, 3. plate roll ring, 4. thread roll ring, 5. nut, 6. screw thread, 7. spline shaft, 8. spline hole.

Detailed ways

Referring to the accompanying drawings, a composite cemented carbide roll includes a mandrel 1, a bar roll ring 2, a plate roll ring 3, a threaded roll ring 4 and a nut 5, and the middle of the mandrel 1 is set as a spline shaft 7, so Both ends of the mandrel 1 are provided with threads 6, and the bar roll ring 2, plate roll ring 3 and threaded roll ring 4 are all provided with spline holes 8, and the bar roll ring 2, plate roll ring 3 and The threaded roller ring 4 is installed on the spline shaft 7 through the spline hole 8 in turn, and the nut 5 is installed on the two ends of the mandrel 1 through the thread 6 to fasten the bar roller ring 2 and the threaded roller ring 4 position.

The total width of the bar roll ring 2, the plate roll ring 3 and the threaded roll ring 4 is longer than the length of the spline shaft 7, which is convenient for the nut 5 to fasten and position the bar roll ring 2 and the threaded roll ring 4.

When the roll is working, by driving the mandrel 1 to rotate, the spline shaft 7 on the mandrel 1 drives the bar roll ring 2, the plate roll ring 3 and the thread roll ring 4 to rotate through the connection with the spline hole 8, thereby Drive bar roll ring 2, plate roll ring 3 and thread roll ring 4 to roll different kinds of steel materials, and the connection of spline shaft 7 and spline hole 8 increases the connection strength of the rolls, thereby prolonging the service life of the rolls.

Claims (2)

1. combine a hard alloy roll, comprise mandrel, bar collars, sheet material collars, screw thread collars and nut, is characterized in that, is set to splined shaft in the middle of described mandrel, the two ends of described mandrel are provided with screw thread, described bar collars, sheet material collars and screw thread collars are provided with splined hole, described bar collars, sheet material collars and screw thread collars are arranged on splined shaft by splined hole successively, and described nut is arranged on the two ends of mandrel by screw thread.

2. combination hard alloy roll according to claim 1, is characterized in that, described bar collars, and the width overall length of sheet material collars and screw thread collars is greater than the length of splined shaft.