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Cutting knife used for thermal cutting of plastic material

A plastic profile, thermal cutting technology, applied in metal processing and other directions, can solve the problems of insufficient smoothness of the end surface of the profile, affect the quality of the profile, loud noise, etc., achieve the effect of not easy to chip, improve the production environment, and reduce cutting noise

Active Publication Date: 2013-05-22
TONGLING GREAT EXTRUSION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of thermal cutting usually has a cutting speed of 2 times / min. Due to the fast cutting speed, the heat transferred from the cutting edge to the surface of the profile is limited, and burrs and other cut marks will still be left on the cutting surface of the profile, which makes the end surface of the profile not smooth enough and affects the quality of the profile. In addition, due to the existence of cut marks, there is still a lot of noise when cutting

Method used

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  • Cutting knife used for thermal cutting of plastic material
  • Cutting knife used for thermal cutting of plastic material
  • Cutting knife used for thermal cutting of plastic material

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Embodiment Construction

[0014] like figure 1 and figure 2 As shown, the blade body 1 is provided with a mounting hole 12, and the lower end of the blade body 1 is provided with an inclined double-sided cutting edge 11; the inclination angle α of the cutting edge 11 relative to the horizontal line is 22°~28°. The cutting edge 11 includes a first-level cutting edge 111 and a second-level cutting edge 112; the angle of the first-level cutting edge 111 is the angle B between the two sides 1 is 21o~23o, the height L of the first-stage cutting edge 111 1 1.8mm~2.2mm; second-stage cutting edge 112 angle B 2 is 8o~10o, the height L of the second cutting edge 112 2 5mm~8mm, and the thickness T of the blade body 1 is 1.5mm~1.8mm. R smooth transitions exist between the first-stage cutting edges 111 and the second-stage cutting edges 112 , between the second-stage cutting edges 112 , and between the blade body 1 .

[0015] Described first stage cutting edge 111, second stage cutting edge 112 are along bla...

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Abstract

The invention relates to a cutting knife used for thermal cutting of plastic material. The cutting knife used for the thermal cutting of the plastic material comprises a blade body, and an inclined double-edged cutting edge which is arranged at the lower end of the blade body, the inclination angle alpha of the cutting edge relative to the horizontal line is 22-28 degrees, and the blade is grinded along the feeding direction of the blade by a grinding appliance to form the cutting edge. The cutting edge at least comprises a first level cutting edge and a second level cutting edge, the angle B1 of the first level cutting edge is 21-23 degrees, and the angle B2 of the second level cutting edge is 8-10 degrees. The plastic material cut by the blade is smooth in end face and free of the appearance of burs and silkings, and cutting end face quality of the material can be improved. Besides, in a cutting process, the resistance stressed on the blade is even, the blade is not prone to tipping, not only is the service life of the blade prolonged, but also cutting noise is reduced observably, and the production environment is improved.

Description

technical field [0001] The invention relates to a cutting knife for thermally cutting plastic profiles. Background technique [0002] In the production process of plastic profiles, cold cutting and saw blade cutting are usually used to cut the profiles; during the cold cutting process, it is easy to produce broken small particles that will damage the cutting surface of the profile, produce many silk lines, and even the profile will be broken in a large area; saw blade cutting , the end face of the profile will produce a lot of saw marks and chips, and the noise is very loud. The above two cutting methods cannot guarantee the quality of the cut section of the profile, and the working environment is relatively harsh. In order to solve the above problems, technicians have adopted a thermal cutting technology. A heating device is installed on one side of the cutting knife or on the knife holder. By heating the cutting knife, plastic deformation occurs at the contact part of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26D1/04B26D7/10
Inventor 查安平敖万路蒋标朱小燕叶丽丽文继晓
Owner TONGLING GREAT EXTRUSION TECH
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