CN201988663U

CN201988663U - Cold rolling mill

Info

Publication number: CN201988663U
Application number: CN2011200056672U
Authority: CN
Inventors: 沈根法
Original assignee: Huzhou Tengyun Refrigeration Equipment Co Ltd
Current assignee: Zhejiang Tengyun Refrigeration Technology Co Ltd
Priority date: 2011-01-11
Filing date: 2011-01-11
Publication date: 2011-09-28
Anticipated expiration: 2021-01-11

Abstract

The utility model discloses a cold rolling mill, which comprises a frame. An upper operating roll, a lower operating roll, an upper support roll and a lower support roll are arranged on the frame, the upper support roll is positioned above the upper operating roll, the lower support roll is positioned below the lower operating roll, one end of the upper support roll and one end of the lower support roll are respectively connected with a transmission shaft through universal couplings. The cold rolling mill is characterized in that a plurality of axially arranged grooves are arranged on the outer periphery of the upper operating roll equally, and a protruding tooth is formed between each two adjacent grooves. The upper operating roll of the cold rolling roll is further processed, a plurality of axially arranged protruding teeth are peripherally arranged on the outer surface of the upper operating roll, so that a steel strip can be rolled a plurality of parallel grooves and is bent for welding, and the steel strip is made into a metal tube with a plurality of annular grooves inside. The cold rolling mill is simple, practical and low in production cost, and production efficiency is improved more greatly than ever before.

Description

A kind of cold-rolling mill

Technical field

The utility model relates to a kind of cold-rolling mill, particularly a kind of 4-roller cold rolling mill.

Background technology

Evaporation tube on the absorption refrigerate movement belongs to key component on the whole system, directly influences the refrigeration of movement; In order to increase the heat exchange area in the evaporation tube, strengthen stirring action to cold fluid, prolong passing through the time of cold fluid, improve the heat exchange efficiency of evaporation tube, in evaporation tube, process internal thread.

This tapped evaporation tube of present domestic major part mainly obtains by import, but costs an arm and a leg; Also having a kind of practice is the band steel that rolled by cold rolling machine is crossed to be curled be welded into welded tube, carries out the light pipe tapping again, and this practice time spent is longer, and production efficiency is low, is unfavorable for producing in enormous quantities.

Summary of the invention

The utility model has overcome the technical problem that exists in the above-mentioned prior art, cold-rolling mill after a kind of improve is provided, be that the top working roll of cold-rolling mill is further processed, five equilibrium processes the groove that the multiple tracks axial direction is provided with on the surface of top working roll, thereby make on the one side of the band steel that processes and have the multiple tracks groove, on the manufacturing procedure basis of invariable that keeps existing welded tube, again this kind band steel is processed into the metal tube that inside pipe wall is provided with the multiple tracks annular groove, simple and practical, with low cost.

The technical solution of the utility model is achieved in that

A kind of cold-rolling mill, comprise frame, on frame, be provided with upper and lower working roll and upper and lower backing roll, top backing up roll is positioned at the top of top working roll, the lower support roller is positioned at the below of bottom working roll, one end of upper and lower backing roll connects power transmission shaft by Hooks coupling universal coupling separately, it is characterized in that: five equilibrium processes the groove that a plurality of axial directions are provided with on the periphery of top working roll, forms double wedge between the adjacent grooves.

As preferably, the degree of depth of groove is 1.2-1.5mm on the described top working roll, and the spacing between the adjacent in twos double wedge is 1.2-1.5mm.

Adopted the beneficial effects of the utility model of technique scheme to be:

The utility model is that the top working roll of cold-rolling mill has been done further processing, outer surface at top working roll circumferentially processes many double wedges that axially are provided with, so can be with the parallel groove of rolling multiple tracks on the steel, to be with the bent moulding of coil of strip to weld again, make the metal tube that a plurality of toroidal cavities are arranged in the pipe; Simple and practical, low production cost, the practice has more in the past improved production efficiency greatly.

Description of drawings

Fig. 1 is the working state schematic representation of cold-rolling mill among the utility model embodiment;

Fig. 2 is the structural representation of top working roll among the utility model embodiment;

Fig. 3 is that the A of Fig. 2 is to enlarged drawing;

Fig. 4 is the schematic diagram of the metal tube that processes according to the utility model cold-rolling mill among the embodiment;

Fig. 5 is the A-A cutaway view of Fig. 4.

The specific embodiment

The specific embodiment of the present utility model is as follows:

Embodiment: a kind of cold-rolling mill of the present utility model is a 4-roller cold rolling mill, as shown in Figure 1, described 4-roller cold rolling mill comprises frame 1, on frame 1, be provided with upper and

lower working roll

2,3, upper and

lower backing roll

4,5, top backing up roll 4 is positioned at the top of top working roll 2, and lower support roller 5 is positioned at the below of bottom working roll 3, and an end of upper and

lower backing roll

4,5 connects power transmission shaft 7 by Hooks coupling universal coupling 6 separately; As Fig. 2, shown in Figure 3, five equilibrium processes the groove 8 that a plurality of axial directions are provided with on the periphery of top working roll 2, form double wedge 9 between the adjacent grooves 8, the degree of depth of groove is 1.3mm on the described top working roll, and the spacing between the adjacent in twos double wedge 9 is 1.3mm.

During use, band steel 10 is penetrated in the roll gap of upper and

lower working roll

2,3, adjust upper and

lower backing roll

4,5, make it compress upper and

lower working roll

2,3 respectively, upper and

lower working roll

2,3 compresses the band steel 10 in both roll gap, and the double wedge on the top working roll 2 is pressed in the band steel 10; The open cold milling train, power transmission shaft 7 drives upper and

lower backing roll

4,5 and rotates, upper and

lower backing roll

4,5 drives upper and

lower working roll

2,3 by extruding and rotates, and the band steel 10 of walking is processed, and makes on band steel 10 and the one side that top working roll 2 contacts and is evenly distributed with the multiple tracks groove.

After processing, coiling machine 13 is collected above-mentioned band steel 10 reels after cold rolling, deliver to tube mill then, tube mill will be with steel to carry out itemize according to the processing needs, be divided into the suitable band steel of width, carry out deburring, cutting again, broad ways is curled into the shape of pipe again, as Fig. 4, shown in Figure 5, make the metal tube 11 that is distributed with a plurality of toroidal cavities 12 arranged side by side on the inwall by high-frequency welding equipment welding then; When metal tube 11 uses as evaporation tube, can prolong passing through the time of cold fluid, improve the heat exchange efficiency of evaporation tube.

Claims

1. cold-rolling mill, comprise frame, on frame, be provided with upper and lower working roll and upper and lower backing roll, top backing up roll is positioned at the top of top working roll, the lower support roller is positioned at the below of bottom working roll, one end of upper and lower backing roll connects power transmission shaft by Hooks coupling universal coupling separately, it is characterized in that: five equilibrium processes the groove that a plurality of axial directions are provided with on the periphery of top working roll, forms double wedge between the adjacent grooves.

2. a kind of cold-rolling mill according to claim 1 is characterized in that: the degree of depth of groove is 1.2～1.5mm on the described top working roll, and the spacing between the adjacent in twos double wedge is 1.2～1.5mm.