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Engineering plastic spherical plain bearing sheathing material, internal sphere material and molding method thereof

A kind of joint bearing and engineering plastic technology, which is applied in the field of joint bearing molding and engineering plastic joint bearing materials, can solve the problems of inflexible rotation of the inner ball, high friction coefficient, and reduce the friction coefficient of the inner ball, so as to improve the rotation flexibility, The effect of improving wear resistance and reducing friction coefficient

Inactive Publication Date: 2009-01-14
NORTHWESTERN POLYTECHNICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the high friction coefficient of the bearing material and the inflexible rotation of the inner ball in the shell in the prior art, the present invention provides an engineering plastic joint bearing shell material, which can reduce the time when the inner ball rotates in the shell by adding a solid lubricant. coefficient of friction

Method used

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  • Engineering plastic spherical plain bearing sheathing material, internal sphere material and molding method thereof
  • Engineering plastic spherical plain bearing sheathing material, internal sphere material and molding method thereof
  • Engineering plastic spherical plain bearing sheathing material, internal sphere material and molding method thereof

Examples

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Effect test

Embodiment 1

[0030] Embodiment 1: According to A1 and attached figure 1 Prepare the shell material, that is, firstly weigh the solid lubricant, PA6, dispersant and antioxidant according to the formula dosage and mix them at high speed, then add them to the twin-screw extruder to melt, and then introduce long glass fibers, through the shear of the screw It becomes short fibers, and the mixture is extruded from the die of the extruder into strips, water-cooled, dried, and pelletized to become the shell material of engineering plastic joint bearings. Follow B1-1# and attached figure 2 Prepare the inner ball material, that is, firstly weigh the solid lubricant, PA66, compatibilizer, dispersant and antioxidant according to the formula dosage and mix them at high speed, then add them to the twin-screw extruder and melt them, and the mixture is discharged from the extruder mouth Die extruded into strips, water-cooled, dried, and pelletized to become the inner ball material of engineering plasti...

Embodiment 2

[0031] Embodiment 2: according to A1 and attached figure 1 Prepare shell materials according to B1-2# and attached figure 2 Prepare the inner ball material according to the attached image 3 Injection molded spherical plain bearings, according to the attached Figure 4 Carry out post-processing of the joint bearing, the method is the same as that in Example 1. The obtained spherical plain bearing inner ball rotated well in the housing.

Embodiment 3

[0032] Embodiment 3: according to A1 and attached figure 1 Prepare shell materials according to B1-3# and attached figure 2 Prepare the inner ball material according to the attached image 3 Injection molded spherical plain bearings, according to the attached Figure 4 Carry out post-processing of the joint bearing, the method is the same as that in Example 1. The obtained spherical plain bearing inner ball rotated well in the housing.

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Abstract

The invention discloses casing material of an engineering plastic joint bearing. The casing material is characterized in that the casing material comprises polyamide 6 with weight parts of 58.2 to 66.0, glass fibers with weight parts of 28.3 to 38.8, MoS2 with weight parts of 2.4 to 4.7, dispersing agent TAT with weight parts of 0.4 to 0.6, anti-oxidant 168 with weight parts of 0.1 to 0.2 and anti-oxidant 1010 with weight parts of 0.1 to 02. The invention also discloses inner sphere material of the engineering plastic joint bearing. The inner sphere material is characterized in that the inner sphere material comprises polyamide 66 with weight parts of 92.0 to 95.5, solid lubricant with weight parts of 2.5 to 4.8, bulking agent POE-g-MAH with weight parts of 1.5 to 2.4, dispersing agent TAT with weight parts of 0.4 to 0.6 and anti-oxidant 1098 with weight parts of 0.1 to 0.2. In addition, the invention also discloses a moulding method for the engineering plastic joint bearing, firstly, the inner sphere is injected, then the inner sphere is positioned into an outer casing die as an embedding part for injecting the casing, and the engineering plastic joint bearing is positioned into a baking box for final treatment after being molded through injection. By adopting the method, the production efficiency of the technically molded single product in the prior art is enhanced from 30 min to 1 min.

Description

technical field [0001] The invention relates to a joint bearing material, especially an engineering plastic joint bearing material, and also relates to a forming method of the joint bearing. Background technique [0002] The joint bearing is composed of two parts, the inner ball and the outer shell. The sliding contact surface of the inner ball and the outer shell is a spherical surface. It is mainly suitable for swinging motion, tilting motion and rotating motion. It is a kind of spherical sliding bearing. [0003] The document "US Patent No. 5,129,148" discloses a non-metallic plastic rod end joint bearing. The resin matrix is ​​epoxy resin or polyimide resin modified by graphite and ceramics, reinforced by glass fiber or carbon fiber, and the rod end joint bearing is formed by three-step molding method. That is, the inner ball is molded first, then the intermediate transition ring is molded, and the outer shell is finally molded. The disadvantage of the non-metallic pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K13/04C08K7/14C08K3/32C08L77/06C08L27/18C08L83/04C08K5/098B29C45/00B29C45/14B29C71/02F16C33/00B29L31/04
Inventor 张广成邢亚娟马科峰林德庆
Owner NORTHWESTERN POLYTECHNICAL UNIV
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