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Dead knife for textile shearing machine and machining technology thereof

A processing technology, shearing machine technology, applied in textile and papermaking, fabric surface trimming, other manufacturing equipment/tools, etc. Long service life, easy processing, and the effect of improving shearing efficiency

Pending Publication Date: 2018-04-13
昆山立达纺织实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The bottom knives of existing shearing machines mainly have the following problems: 1. There is a large deviation in the parallelism and straightness of the cutter body, which can reach as much as 0.5mm; This will easily cause the bottom knife to burst and burst, resulting in poor applicability and shortened service life.

Method used

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  • Dead knife for textile shearing machine and machining technology thereof
  • Dead knife for textile shearing machine and machining technology thereof
  • Dead knife for textile shearing machine and machining technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Include the following steps:

[0068] a) Material selection: Special steel plates are used as raw materials;

[0069] b) blanking: cutting the special steel plate in step a) into required size;

[0070] c) Coarse grinding: Use a grinding machine to grind the surface of the cut special steel plate to remove the oxide layer and obtain the prototype of the bottom knife;

[0071] d) Straightness correction: Correct the straightness of the bed knife prototype by vertical beating, and control the straightness within 0.5;

[0072] e) Quenching: Select SP-25 high-frequency induction heating machine, and use high-frequency quenching process to quench the base knife prototype after straightness correction in step d), and the quenching depth is 1 / 2-2 of the width of the bed knife / 3, the quenching temperature is 850°C, and the quenching time is 8 minutes;

[0073] f) Tempering: place the quenched bottom knife prototype in a tempering furnace for tempering treatment, the temperi...

Embodiment 2

[0081] The difference between Example 2 and Example 1 is that the quenching temperature in step e) is 1050° C., and the quenching time is 8 minutes; the tempering temperature in step f) is 300° C., and the tempering time is 1.5 hours.

Embodiment 3

[0083] The difference between Example 3 and Example 1 is that the quenching temperature in step e) is 950° C., and the quenching time is 5 minutes; the tempering temperature in step f) is 240° C., and the tempering time is 2 hours.

[0084] The processing technique of the bottom knife that weaving shearing machine of the present invention is used, its beneficial effect is:

[0085] 1. After rough grinding, tempering and semi-fine grinding, the straightness of the bed knife is corrected by spot heating and welding, because the bed knife will inevitably be deformed or bent after undergoing temperature changes or grinding phenomenon, the purpose of spot heating and welding is to use the thermal deformation factor of the material to correct the straightness of the bed knife on the one hand, and on the other hand to effectively eliminate the surface stress of the bed knife;

[0086] 2. During the quenching process, the quenching depth is 1 / 2-2 / 3 of the width of the bedknife, so tha...

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Abstract

The invention relates to a dead knife for a textile shearing machine. The dead knife comprises a cutting edge and a blade body, wherein the rigidity of the cutting edge is different from that of the blade body; the cutting edge comprises a first cutting edge, a second cutting edge and a third cutting edge; the first cutting edge, the second cutting edge, the third cutting edge and the blade body are connected in sequence and are molded integrally; each of the first cutting edge and the second cutting edge is of an inclined plane structure; each of the third cutting edge and the blade body is of a plane structure, and the thicknesses of the first cutting edge, the second cutting edge, the third cutting edge and the blade body are the same; a cutting edge included angle of the first cuttingedge is alpha and the cutting edge included angle of the second cutting edge is beta; the alpha and the beta are acute angles and the alpha is greater than the beta. According to a machining method provided by the invention, the rigidity of the cutting edge of the dead knife is distinguished from the rigidity of the blade body, and the straightness and the parallelism degree of the dead knife keepconsistent; the service life of the dead knife can be prolonged, and the smoothness in a matching and adjusting process of the dead knife and a round knife is also ensured; the working efficiency isgreatly improved.

Description

technical field [0001] The invention relates to the technical field of textile equipment, in particular to a bottom knife for a textile shearing machine and a processing technology thereof. Background technique [0002] After weaving, untwisting or fluffing, the plush fibers on the surface of velvet fabrics have different lengths. At this time, the plush needs to be trimmed evenly. The shearing machine is one of the main equipment for the post-finishing of plush products. Trimming quality, at this time the requirements for the bottom knife of the shearing machine are getting higher and higher. [0003] The bottom knives of existing shearing machines mainly have the following problems: 1. There is a large deviation in the parallelism and straightness of the cutter body, which can reach as much as 0.5mm; This is easy to cause the bottom knife to burst and burst, resulting in poor applicability and shortened service life. [0004] Therefore, how to provide a bed knife with be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06C13/00C21D1/18C21D9/00B23P23/00
CPCC21D1/18C21D9/0068D06C13/00B23P23/00
Inventor 蒋云龙
Owner 昆山立达纺织实业有限公司
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