A kind of production process of arc cutting knife

A production process and cutting knife technology, which is applied in the field of arc cutting knife production technology, can solve the problems of high cost and cannot meet the production process requirements of arc cutting knives, etc., and achieve the effects of low cost, removal of material defects, and improvement of internal organizational structure.

Active Publication Date: 2018-08-21
三明市宏立机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the currently disclosed cutting knife processing techniques, there is no arc cutter production process for arc-shaped processing of baby diapers, which cannot meet the arc cutter production process requirements of the diaper arc cutter assembly.
At present, my country mainly relies on imports, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] An arc cutter production process, including the following steps:

[0055] Step 1: Mandrel processing technology

[0056] Using 40Cr as the raw material, it is roughed and then quenched and tempered to a hardness of 28-32HRC, and the center hole is ground. The bearing position and center hole are processed by high frequency to a hardness of 50-55HRC, and then finished by a high-precision CNC lathe;

[0057] Step 2: Roughing the upper and lower rolls of the cutter

[0058] Use high-speed steel as raw material to knead and forge at 300-500 degrees. After rough turning, the knife shape is processed on the CNC machine tool;

[0059] Step 3: Heat treatment of the upper and lower rolls of the cutter

[0060] The heat treatment of the upper and lower rolls of the cutter includes annealing, quenching, tempering and cryogenic treatment. The annealing is: heating from room temperature for 2 hours to 500 degrees, heating for 1.5 hours to 850 degrees, heating for 1.5 hours to 1500 degrees, and...

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PUM

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Abstract

The invention relates to the field of production equipment for hygiene products, in particular to a production technique for an arc cutter. The production technique for the arc cutter comprises the following steps of (1) machining of a mandrel; (2) rough machining of an upper roller and a lower roller of the cutter; (3) heat treatment of the upper roller and the lower roller of the cutter, specifically, in the annealing process, the temperature is increased to 500 DEG C from the normal temperature in two hours, increased to 850 DEG C in 1.5 hours, increased to 1500 DEG C in 1.5 hours, and decreased to 1210 DEG C in one hour, and heat preservation is conducted for two hours; the quenching oil temperature is 60 DEG C or over; tempering is conducted at the temperature of 550 DEG C four times; and subzero treatment is conducted at the temperature of minus 140 DEG C for six hours; (4) matching of the mandrel and the upper and lower rollers of the cutter; (5) accurate grinding of the outer circle; and (6) trimming and accurate grinding of a cutting edge. The production technique for the arc cutter has the beneficial effects that the heat treatment technique is autonomous, so that the service life of the rollers of the cutter is remarkably prolonged; and an arc cutter assembly produced through the technique is good in comprehensive mechanical performance, long in service life, good in structural stability and low in cost.

Description

Technical field [0001] The invention relates to the field of sanitary product production equipment, in particular to an arc cutter production process. Background technique [0002] With the development of society, people's living standards continue to improve, and sanitary products such as baby diapers are widely used. People's market demand for products of different specifications is also increasing, so new requirements are also put forward for the process of the arc cutter assembly on the production line of disposable baby diapers. [0003] The publication date is December 23, 2015. The Chinese invention patent document with publication number 105177269A discloses a durable die cutter process for packaging materials, including the following steps: (a) Provide high-quality 50# carbon cold-rolled strip steel raw materials ; (B) Surface decarburization and tempering and discoloration treatment; (c) Trimming, cutting edge package (planing) rough machining; (d) 27MHZ ultra-high frequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/28
CPCB23P15/28
Inventor 陈千国胡国常
Owner 三明市宏立机械制造有限公司
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