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Tube for fixing and process for producing the same

A manufacturing method and process technology, applied in the field of manufacturing fixed pipes, to achieve the effects of improving fatigue strength, improving strength stability, and increasing reliability

Inactive Publication Date: 2009-06-24
ENDO MFG COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no disclosure of techniques for effectively handling metal prototypes in drawn parts to solve the above-mentioned problems

Method used

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  • Tube for fixing and process for producing the same
  • Tube for fixing and process for producing the same
  • Tube for fixing and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Table 1 shows an example of the experimental results of the peeling strength of shot peening number No. 320.

[0054] In addition, the test of the peeling strength in this example was carried out on the metal pipe after the blasting process. Symbols F, C, and B in the table indicate the measurement position. The symbol F represents the position of the flange part of the metal pipe, the symbol C represents the position of the central part of the metal pipe, and the symbol B represents the position of the ground part of the metal pipe at the bottom. The average value of the peeling strength at these three measurement locations is 1.23N / cm 2 (126gf / cm 2 ), however, the average value of the measurement results at the position of the central pipe portion (the position of symbol C) which is the fixed pipe is 1.63 N / cm 2 (166gf / cm 2 ), thus showing higher peel strength measurements than other locations.

[0055] Table 1:

[0056] ※ Tube film thickness: 50μm (n=3)

[005...

Embodiment 2

[0065]The fixing tube produced by this production method is a very thin tube having a wall thickness A of 20 to 50 μm, and is slightly deformed in the peripheral portion by sandblasting. This deformation can be expressed as a difference in outer diameter size which is the difference between the maximum value and the minimum value of the outer diameter size. For example, when the difference in outer diameter is 0, it can be judged as a perfect circle. This difference in outer diameter varies depending on blasting processing conditions (for example, processing time, projection pressure (shot blasting), rotational speed of the metal pipe, and moving speed of the nozzle). For example, when the projection pressure (shot peening) is increased, the difference in outer diameter also tends to increase.

[0066] Table 2 shows the data of the difference in outer diameter in blasting treatment conditions 1, 2, and 3.

[0067] exist In the fixed pipe, the sandblasting treatment conditi...

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Abstract

A tube for fixation, which has increased durability and a method of producing the same are provided. Forming by spinning is carried out so as to thin the thickness A of a side wall of a bottomed prime tube 1 of a plastically deformable metal to a thickness of 20 to 50 [mu]m while rotating the bottomed prime tube 1 about the axis thereof and a metal original form 4 is formed. The metal original form 4 formed by spinning is cut to form a metal tube 6. The surface 6a of the metal tube 6 is sandblasted to impart residual compression stress to the surface 6a and to roughen the same. The treated surface is covered with a fluorocarbon resin film 7. The fluorocarbon resin film 7 is then heated to be heat-shrunk and the fluorocarbon resin film 7 is formed on the metal tube 6. Thus, a tube for fixation 8 is formed.

Description

technical field [0001] The present invention relates to a manufacturing technology of a fixing pipe. More specifically, it is a fixing tube that is used in electrophotographic printers, copiers, and the like, and that can be used as a roller for photoreceptors and the like, and a method for manufacturing the same. Background technique [0002] Conventionally, a fixing tube has been used as a part of an image forming apparatus. The use function of this fixing tube differs depending on black-and-white copying, color copying, or color printers. Generally, the fixing tube is coated with a fluororesin or the like on a ring-shaped metal prototype by heat shrinkage. [0003] Among techniques for forming a metal prototype, the present applicant proposes a technique for machining a thin-walled metal cylinder by performing rotational plastic working, that is, spinning (for example, refer to Patent Document 1). Forming accompanying this processing is performed by cold or hot drawing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20F16C13/00
CPCG03G15/2053G03G2215/2048
Inventor 白井清隆八百板崇蝶名林谦次
Owner ENDO MFG COMPANY
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