CN109262719B

CN109262719B - Partitioned hot cutting knife

Info

Publication number: CN109262719B
Application number: CN201811367452.8A
Authority: CN
Inventors: 刘丽丽; 吕康飞; 戴青松; 黄传辉
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2021-03-05
Anticipated expiration: 2038-11-16
Also published as: CN109262719A; AU2019101154A4

Abstract

The invention discloses a partitioned thermal cutting knife which comprises a blade and a knife rest, wherein the blade is formed by splicing a plurality of mutually independent blade units end to end, the blade units are connected in parallel and are electrically insulated from each other, the blade is of a long strip structure with a cutting edge, the blade is arranged on the knife rest, the knife rest is of a long strip structure with a square groove at the top, and the cutting edge of the blade faces outwards and is arranged in the square groove of the knife rest. The invention has the advantages of ingenious structure, novel conception, uniform integral heating, stable blade structure, long service life, convenient maintenance, compact structure and convenient and accurate control.

Description

Partitioned hot cutting knife

Technical Field

The invention relates to the technical field of cutting equipment, in particular to a partitioned hot cutting knife.

Background

In the field of material processing and treatment, cutting is one of important links, and applied cutting equipment is diversified, and according to the difference of cutting technologies, the existing cutting equipment has a plurality of types such as cutting of a blade or a saw blade with sawteeth, laser cutting, water jet cutting, ultrasonic cutting, hot knife cutting and the like, and is applied to various cutting fields according to respective good and bad characteristics. Hot knife cutting is a cutting process that utilizes a heated cutting blade to perform the cutting.

Current hot cutting knife is most less, and equipment structure is simple, and handheld that can be convenient, when nevertheless being applied to the main equipment, the heat of hot cutting knife scatters and disappears easily and makes energy utilization not high, and simultaneously, the heat scatters and disappears inhomogeneous for temperature distribution on the hot cutting knife is inhomogeneous, very big influence cutting quality. If a fault occurs at a certain position of the hot cutting knife, the whole hot cutting knife can not be used any more, and the service life is short. Therefore, on large-scale hot cutting knife equipment, redesign or improvement is needed, so that the requirements of industrial application and the premise of energy conservation and environmental protection are met.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a partition type hot cutting knife.

The invention aims to solve the technical problem by adopting the following technical scheme that the partitioned hot cutting knife comprises a blade and a knife rest, wherein the blade is formed by splicing a plurality of mutually independent blade units end to end, the blade units are connected in parallel and are electrically insulated from each other, the blade is in a long strip structure with a cutting edge, the blade is arranged on the knife rest, the knife rest is in a long strip structure with a square groove at the top, and the cutting edge of the blade faces outwards and is arranged in the square groove of the knife rest.

In the invention, the blade unit comprises two hard insulating protective plates which are buckled together, a heating strip is arranged in the cutting edge part of the blade unit and is positioned between the two protective plates, and leads are led out from two ends of the heating strip.

Further, the protection sheet is a ceramic sheet.

In the invention, two sides of the blade arranged in the square groove of the tool rest are respectively provided with a limiting filling medium, and specifically, the blade comprises a limiting plate arranged below and a filling material arranged above.

Further, the limiting plate is a mica plate, and the filling material is a bonding material, in particular a high-temperature-resistant bonding material.

In the invention, the tool rest comprises a bottom plate and a cover plate which are buckled together, the bottom plate and the cover plate are provided with correspondingly communicated screw holes, and the bottom plate and the cover plate are fixed through bolts.

In the invention, the heating strip is in a strip shape or an S-shaped or heating wire structure.

In the invention, the two ends of the blade are provided with the plugs, so that the two ends of the blade are fixed and the structure of the blade is protected.

Compared with the prior art, the invention has novel structure and ingenious conception, and the heat cutting knives of the adjacent sections are designed in a partition mode, so that the heat generation of the heat cutting knives is the same, the integral temperature of the heat cutting knives is uniform, and the cutting quality can be ensured when the heat cutting knives are applied to large-scale equipment for larger cutting work; the specific structure of the blade unit can also fully utilize electric energy to generate heat, and the insulating structure of the blade unit can also ensure that no influence exists between the adjacent blade units; the blade is embedded into the knife rest through the insulating filling material, so that the blade is firmly fixed on the knife rest, is heat-insulating and insulated, and can keep the stability of the blade structure during rapid cutting; the blade unit mutual independence of each district section even the trouble does not influence whole use yet, can quick replacement, convenient maintenance, and simultaneously, overall structure is compact, can realize accurate control through installing on the roller or on other specific structure.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of the present invention;

fig. 3 is a schematic structural diagram of a blade unit of the present invention.

In the figure: the blade comprises a blade 1, a blade holder 2, a blade unit 3, a protective sheet 4, a bottom plate 5, a cover plate 6, a screw hole 7, a limiting plate 8, a filling material 9, a heating strip 10, a lead 11 and a plug 12.

Detailed Description

The invention is further described below with reference to the drawings and specific preferred embodiments of the description, without thereby limiting the scope of protection of the invention.

Referring to fig. 1-3, the sectional type thermal cutting knife comprises a blade 1 and a knife rest 2, the blade 1 is formed by splicing a plurality of mutually independent blade units 3 end to end, the blade units 3 are connected in parallel and are electrically insulated from each other, the blade unit 3 comprises two ceramic protection plates 4 which are buckled together, a heating strip 10 is arranged in a cutting edge part of the blade unit 3, the heating strip 10 is positioned between the two protection plates 4, wires 11 are led out from two ends of the heating strip, the blade 1 is in a long strip structure with a cutting edge, the knife rest 2 is in a long strip structure with a square groove at the top, the cutting edge of the blade 1 is outwards arranged in the square groove of the knife rest 2, limiting filling media are respectively arranged at two sides of the blade 1 and comprise a limiting plate 8 arranged below and a filling material 9 arranged above, the knife rest 2 comprises a bottom plate 5 and a cover plate 6 which are buckled together, the bottom plate 5, the blade is fixed through bolts, plugs 12 are arranged at two ends of the blade 1, two ends of the blade 1 are fixed, and the structure of the blade 1 is protected.

When the partitioned hot cutting knife is applied to hot cutting equipment, the heating strips 10 in the blade units 3 start to heat after being electrified, and the heating strips 10 are connected in parallel and are insulated from each other, so that the electric energy of the heating strips 10 is consistent, the heating strips 3 are consistent, and the blades are uniformly heated integrally. When a fault exists in which blade unit in the using process, the blade unit can be directly taken out for replacement, and then the blade unit can be continuously used. Therefore, the invention has the advantages of ingenious structure, novel conception, uniform integral heating, stable blade structure, long service life, convenient maintenance, compact structure and convenient and accurate control.

Claims

1. The utility model provides a subregion formula heat cutting knife, includes blade and knife rest, its characterized in that: the blade is formed by splicing a plurality of mutually independent blade units end to end, the blade units are connected in parallel and are electrically insulated from each other, the blade is of a long strip structure with a cutting edge, the blade is installed on a tool rest, the tool rest is of a long strip structure with a square groove at the top, and the cutting edge of the blade faces outwards and is installed in the square groove of the tool rest;

the blade unit comprises two hard insulating protective plates which are buckled together, a heating strip is arranged in the cutting edge part of the blade unit and is positioned between the two protective plates, and leads are led out from two ends of the heating strip;

the protective sheet is a ceramic sheet; and the two sides of the blade arranged in the square groove of the tool rest are respectively provided with a limiting filling medium, and the limiting filling medium comprises a limiting plate arranged below and a filling material arranged above.

2. The segmented thermal cutting knife according to claim 1, wherein the limiting plate is a mica plate, and the filler is an adhesive material.

3. The segmented hot cutting knife according to claim 1, wherein the knife holder comprises a base plate and a cover plate fastened together, the base plate and the cover plate are provided with corresponding through screw holes and are fixed by bolts.

4. A segmented heat cutting blade as claimed in claim 1, wherein the heat generating strip is of elongate strip or S-shaped or filament configuration.

5. A segmented hot cutting knife according to claim 1, wherein plugs are provided at both ends of the blade to secure both ends of the blade and protect the blade structure.