CN204235962U - The winding material of modified polyacetal three layers of composite bearing - Google Patents

Abstract

This utility model discloses a modified polyoxymethylene (POM) three-layer composite bearing coil material, aiming to provide a material that can meet the requirements of automated bearing production, improve the production efficiency of bearing manufacturing, and eliminate unavoidable waste at both ends during short-plate production, thereby improving material utilization and saving resources. It comprises at least a low-carbon steel coil, stainless steel coil, or bronze coil as the base coil. The key feature is that a spherical bronze powder layer is sintered on the working surface of the base coil, and a friction-reducing and wear-resistant modified POM plastic layer is then covered on top of the spherical bronze powder layer. Regularly distributed oil reservoirs are rolled onto the surface of the modified POM plastic layer. This coil material can meet the requirements of automated production lines for bearings and bearing bushes, improving both production efficiency and material utilization. Three-layer composite bearings produced using this material have excellent characteristics such as light weight, small size, strong impact resistance, high load-bearing capacity, superior wear resistance, and low coefficient of friction.

Description

Tape material for modified polyoxymethylene three-layer composite bearing

technical field

The utility model relates to sliding bearing materials, in particular to tape materials for self-lubricating bearings made of modified polyoxymethylene three-layer composite materials.

Background technique

As we all know, the bearing made of polyoxymethylene three-layer composite material was created by the British Gracia Company. It is based on a steel plate, sintering a layer of spherical bronze powder on it, and finally rolling a layer of modified polyoxymethylene on the surface of the sintered layer. The plastic layer, the surface of the plastic layer is rolled with regularly distributed oil storage holes. The three-layer composite material is rolled into a sleeve shape, which is called DX bearing internationally. The characteristic of this kind of product is that the plastic layer has self-lubricating property, and the grease lubrication in the oil hole can achieve a relatively ideal boundary lubrication effect. It has good wear resistance and high load-carrying capacity. Usually, the limit PV value can reach 2.8N/mm ² ·m/s. However, at present, the three-layer composite materials used to make this type of bearings in China are only in the form of short plate materials, and the length of a single piece is not more than 1 meter, so it is impossible to produce products in the form of long strip materials, which seriously restricts downstream bearings. The degree of automated production in the manufacturing industry and the utilization rate of materials have also been at a low level. With the development of international science and technology, the demand for such products continues to increase, and it is more eager to have a material that can not only meet the performance but also improve the production efficiency of bearings to replace them.

Utility model content

The purpose of this utility model is to provide a tape material for modified polyoxymethylene three-layer composite bearings. Compared with the traditional manual short plate material, it has the advantages of being able to adapt to the requirements of automatic bearing production and greatly improving the production efficiency of bearing production. , saving resources.

In order to achieve the above object, the structural technical solution of the utility model is: it at least includes using low-carbon steel coils or stainless steel coils or bronze coils as the base coil, and is characterized in that spherical bronze is sintered on the working surface of the base coil. The powder layer is covered with a layer of anti-friction and wear-resistant modified polyoxymethylene plastic layer on the spherical bronze powder layer, and regularly distributed oil storage holes are rolled on the surface of the modified polyoxymethylene plastic layer.

The thickness of the spherical bronze powder layer is 0.2-0.45 mm.

The thickness of the modified polyoxymethylene plastic layer is 0.20-0.70 mm.

The unrolled length of the tape material for the modified polyoxymethylene three-layer composite bearing is greater than 100 meters.

The tape material for the modified polyoxymethylene three-layer composite bearing produced according to the above scheme can meet the automatic assembly line production of bearings and bearing bushes, which not only improves the production efficiency, but also improves the material utilization rate. The three-layer composite bearing produced has the excellent characteristics of light structure, small size, strong impact resistance and large load-carrying capacity, excellent wear resistance and low friction coefficient. Products are widely used in automobiles, agricultural machinery, mining machinery, metallurgical machinery, injection molding machinery, water conservancy machinery and other fields.

Description of drawings

Fig. 1 is the front view of the tape material that modified polyoxymethylene three-layer composite bearing is used;

Fig. 2 is the schematic diagram when the tape material that modified polyoxymethylene three-layer composite bearing is used unfolds;

Fig. 3 is a schematic view showing the rotation and enlargement of section A-A in Fig. 2 .

In the figure: 1. Base tape; 2. Spherical bronze powder layer; 3. Modified polyoxymethylene plastic layer; 4. Oil hole.

Detailed ways

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

Figure 1 to Figure 3 are structural schematic diagrams of tape materials for modified POM three-layer composite bearings. It can be seen from the figure that it uses low-carbon steel tape or stainless steel tape or bronze tape as the base tape 1. A spherical bronze powder layer 2 is sintered on the working surface of the substrate tape 1, and a layer of anti-friction and wear-resistant modified polyoxymethylene plastic layer 3 is coated on the spherical bronze powder layer 2. The surface of the formaldehyde plastic layer 3 is rolled with regularly distributed oil storage cavities 4 . Among them, the combination of the matrix tape 1 and the spherical bronze powder layer 2 is semi-melted and sintered, and the modified polyoxymethylene plastic layer 3 not only covers the top of the spherical bronze powder layer 2, but also has a mutual joint surface with the spherical bronze powder layer 2. Embedded state, which ensures a good bonding force between the three, so that the finished product can withstand greater working pressure. The thickness of the spherical bronze powder layer 2 is 0.2-0.45 mm; the thickness of the modified polyoxymethylene plastic layer 3 is 0.20-0.70 mm. The unrolled length S of the tape material for the modified polyoxymethylene three-layer composite bearing is greater than 100 meters, such as 250 to 350 meters.

Claims (4)

1. the winding material of modified polyacetal three layers of composite bearing, which comprises at least with mild steel winding or stainless steel winding or bronze winding is matrix winding, on the working surface that it is characterized in that matrix winding, sintering has spherical bronze bisque, one deck antifriction, wear-resisting modified polyacetal plastic layer is covered again, in the oil storage cave of the regular distribution of the surface rolling of modified polyacetal plastic layer on spherical bronze bisque.

2. the winding material of modified polyacetal according to claim 1 three layers of composite bearing, is characterized in that the thickness of described spherical bronze bisque is 0.2 ~ 0.45 millimeter.

3. the winding material of modified polyacetal according to claim 1 three layers of composite bearing, is characterized in that the thickness of described modified polyacetal plastic layer is 0.20 ~ 0.70 millimeter.

4. the winding material of modified polyacetal according to claim 1 three layers of composite bearing, is characterized in that its length of run of winding material of described modified polyacetal three layers of composite bearing is greater than 100 meters.