CN112337976A

CN112337976A - Integral embossing roller and manufacturing method thereof

Info

Publication number: CN112337976A
Application number: CN201910723787.7A
Authority: CN
Inventors: 陈建忠; 柯褔安
Original assignee: Fujian Lianshun Iron Forging Co ltd
Current assignee: Fujian Lianshun Iron Forging Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2021-02-09

Abstract

The invention belongs to metal machining without cutting; in particular to embossing rolls. The integral embossing roller is characterized in that the roller consists of a central shaft and a bearing, two ends of the central shaft are roller necks, the roller necks are used for mounting the bearing, grooves are machined on the surface of the middle part of the central shaft, a plurality of grooves are distributed at equal intervals, and adjacent grooves are spaced by cylindrical sections. The invention has the advantages of simple and compact structure, working areas with the same length, capability of arranging more rolling grooves, easy assembly, high finished product rate of processed products and no phenomena of dislocation and torsional deformation of patterns; the integral die has good rigidity and high strength, and compared with the bushing combined roller, the bushing replacing time is saved, and the time is saved; the roller can be reprocessed and used after being worn; the integral roller has the same axial size, and the number of arranged and processed wires is more than that of the bushing type roller, so that the production efficiency of the integral roller is high.

Description

Integral embossing roller and manufacturing method thereof

Technical Field

The invention belongs to metal machining without cutting; in particular to embossing rolls.

Background of the invention

As shown in fig. 1-5, the roll is the main working component and tool for producing continuous plastic deformation of metal on the rolling mill, and mainly comprises three parts of central shaft 1, bush 3 and bearing 2, as shown in fig. 1, a plurality of bush pieces are sleeved outside the central shaft, the central shaft and the bush pieces are positioned and driven by flat key 5, the bush pieces are the middle parts of the roll actually participating in rolling metal, grooves 31 are processed on the surface of the bush pieces at intervals, smooth cylindrical sections 32 are arranged at two ends of the grooves and between the two grooves, generally, one bush piece has two grooves, and two ends of the central shaft are necks 11 for mounting the bearing. The central shaft and the bushing are formed by mechanical processing and assembling, the two ends are locked by the nuts 7, and the bushing has offset in the axial direction or the circumferential direction (radial direction) of the central shaft due to the processing error of the end face of the bushing and the installation clearance, so that the upper and lower patterns of a product are staggered in the process of rolling metal wires, torsional deformation occurs, and the rejection rate is high. As shown in fig. 4 and 5, the sides 311 of the groove are perpendicular to the center line, and the profile is easy to slip when entering. The rolls may be arranged in two, three, four or more rolls in the mill stand.

Disclosure of Invention

The invention aims to overcome the defects in the existing metal wire rolling process, and provides an integral embossing roller which can better overcome the torsional deformation of metal rolling and dislocation of upper and lower patterns so as to improve the yield.

The technical scheme adopted by the invention is that the integral embossing roller is characterized in that the roller consists of a central shaft and a bearing, wherein two ends of the central shaft are provided with roller necks, the roller necks are used for mounting the bearing, the surface of the middle part of the central shaft is provided with grooves, a plurality of grooves are distributed at equal intervals, and adjacent grooves are spaced by cylindrical sections.

The invention is improved on the basis of the prior art, structurally, the central shaft and the insert sleeve are combined into a whole, the insert sleeve is cancelled, the nut fixation is not needed, and the rolled groove is directly processed on the surface of the central shaft, so that the fit clearance is eliminated, and the defects of dislocation and torsional deformation of product patterns are overcome. The two end faces of the current insert sleeve are cylindrical sections, the distance between the grooves of the two insert sleeves is large, the distance between the two grooves in a single insert sleeve is short, the distance between the grooves is uneven, and the space between the grooves is even and compact.

The pressing dies for processing the surfaces of the two sides of the rolling groove are male dies, the height of the male dies is greater than the designed pattern depth, and the height difference between the male dies and the designed pattern depth is 5-10 percent of the designed pattern depth. The pressed patterns are clear.

The height of the male die is larger than the designed pattern depth, and the height difference between the male die and the pattern depth is 5-10% of the designed pattern depth.

The side edge of the rolling groove inclines to the two sides and is trumpet-shaped. The top end of the rolling groove is outwards expanded to facilitate extrusion and guiding, and meanwhile, the top end of the rolling groove is also a body accommodating part for the allowance after the material is extruded, so that the internal stress of the material is reduced.

The included angle between the side edge of the rolling groove and the central line of the roller body is 95-100 degrees.

The material of the central shaft is composed of low-nickel nodular infinitely chilled cast iron, and the alloy cast iron comprises the following components: c: 3.65%, Si: 1.65%, Mn: 0.96%, Ni: 0.81%, Cr: 0.91%, Mo: 0.39%, Re: 0.025%, Mg: 0.055%, P0.21%, S0.007%.

A method for manufacturing an integral embossing roller comprises the steps of processing roller necks at two ends of a central shaft, processing a rolling groove on the surface of the middle part of the central shaft, processing male dies for pressing patterns on the surfaces of two sides of the rolling groove by using a laser engraving machine, wherein the height of the male dies is larger than the designed pattern depth, and the height difference between the male dies is 5-10% of the designed pattern depth.

The invention has the advantages that the structure is simple and compact, the working area with the same length can be arranged with more rolling grooves, the assembly is easy, 1) the finished product rate of the processed product is high, and the phenomena of pattern dislocation and torsional deformation can not occur; 2) the integral die has good rigidity and high strength, and the stability of the product quality is easily ensured; 3) compared with the bushing combined roller, the bushing changing time does not exist, and the time is saved; 4) the roller die can be reprocessed and reused after being worn; 5) the integral roller has the same axial size, and the number of arranged and processed wires is more than that of the bushing type roller (the bushing is generally formed by multiple sections, and the number of correspondingly arranged and processed wires is reduced), so that the integral roller has high production efficiency.

Drawings

FIG. 1 is a schematic view of a conventional roll

FIG. 2 is a sectional view taken along line B-B of FIG. 1

FIG. 3 is an enlarged view of C of FIG. 1

FIG. 4 is a cross-sectional view taken along line E-E of FIG. 1

FIG. 5 is a sectional view taken along line F-F of FIG. 1

FIG. 6 is a schematic structural diagram of the present invention

FIG. 7 is a sectional view taken along line A-A of FIG. 6

FIG. 8 is an enlarged view D of FIG. 6

FIG. 9 is a sectional view taken along line G-G of FIG. 6

FIG. 10 is a sectional view taken along line H-H of FIG. 6

Wherein: 1 center shaft 11 roll neck 2 bearing 3 is inserted with 31 rolling groove 311 side 32 cylindrical section 4 punch 5 flat key 7 nut.

Detailed Description

The present invention will now be described in detail with reference to the drawings, which illustrate examples that will enable those skilled in the art to more fully understand the invention, but which are not intended to limit the invention in any way

As shown in fig. 6-10, an integral embossing roller is an improvement on the basis of the prior art, and comprises a central shaft and bearings, wherein two ends of the central shaft 1 are provided with a roller neck 11 for mounting the bearing 2, the surface of the middle part of the central shaft is provided with grooves 31, a plurality of grooves are distributed at equal intervals, and adjacent grooves are separated by cylindrical sections 32. The invention combines the central shaft and the embedding sleeve into a whole, improves the central shaft and the embedding sleeve into a whole, cancels the embedding sleeve, the flat key and the nut, and directly processes the groove on the surface of the central shaft.

The pressing dies for processing the surfaces of the two sides of the rolling groove are male dies 4, the height of the male dies is larger than the designed pattern depth, and the height difference of the male dies and the designed pattern depth is 5-10 percent of the designed pattern depth. The pressed patterns are clear. The sides 311 of the grooves are inclined to both sides and are trumpet-shaped. The included angle between the two side edges of the rolling groove and the central line of the roller body is 95-100 degrees.

A method for manufacturing an integral embossing roller comprises the steps of processing roller necks at two ends of a central shaft, processing a rolling groove on the surface of the middle part of the central shaft, processing male dies for pressing patterns on the surfaces of two sides of the rolling groove by using a laser engraving machine, wherein the height of the male dies is larger than the designed pattern depth, and the height difference between the male dies is 5-10% of the designed pattern depth. In the embodiment, the diameter of the central shaft is 300mm, the depth of the rolling groove is 13-20mm, when the depth of the rolling groove is less than 13mm, the rolling groove is processed, the rolling groove is deepened to 20mm, the rolling groove is reused, and thus, the roller die is worn and can be reprocessed and reused for at least more than 5 times.

The rest of the parts which are not described are the same as the prior art.

The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications and equivalents made on the basis of the technical idea of the present invention fall within the protection scope of the present invention.

Claims

1. An integral embossing roll, characterized in that: the roller consists of a central shaft and a bearing, wherein two ends of the central shaft are provided with roller necks, the roller necks are used for mounting the bearing, the surface of the middle part of the central shaft is provided with grooves, a plurality of grooves are distributed at equal intervals, and adjacent grooves are spaced by cylindrical sections.

2. The integrated embossing roll of claim 1, wherein: the pressing dies for processing the surfaces of the two sides of the rolling groove are male dies, the height of the male dies is greater than the designed pattern depth, and the height difference between the male dies and the designed pattern depth is 5-10 percent of the designed pattern depth.

3. The integrated embossing roll of claim 1, wherein: the side edge of the rolling groove inclines to the two sides and is trumpet-shaped.

4. An integral embossing roll as claimed in claim 3, wherein the included angle between the sides of the grooves and the centre line of the roll body is in the range of 95 ° to 100 °.

5. An integral embossing roll as claimed in claim 1, characterized in that the material of the central shaft consists of a low-nickel nodular infinitely chilled cast iron, the alloy cast iron composition of which is: c: 3.65%, Si: 1.65%, Mn: 0.96%, Ni: 0.81%, Cr: 0.91%, Mo: 0.39%, Re: 0.025%, Mg: 0.055%, P0.21%, S0.007%.

6. A manufacturing method of an integral embossing roller is characterized in that roller necks are processed at two ends of a central shaft, a rolling groove is processed on the surface of the middle part of the central shaft, male dies for pressing patterns are processed on the surfaces of two sides of the rolling groove by a laser engraving machine, the height of the male dies is larger than the designed pattern depth, and the height difference between the male dies is 5-10% of the designed pattern depth.