CN113519255A

CN113519255A - Sandwich type mowing blade

Info

Publication number: CN113519255A
Application number: CN202110186245.8A
Authority: CN
Inventors: 蒋鑫
Original assignee: Danyang Yuanqiao Tools Co ltd
Current assignee: Danyang Yuanqiao Tools Co ltd
Priority date: 2021-02-17
Filing date: 2021-02-17
Publication date: 2021-10-22

Abstract

The invention discloses a sandwich type mowing blade which is used in the field of agricultural machinery and garden machinery, is arranged on the agricultural machinery and the garden machinery, and is used for mowing and smashing straws. Particularly, the harvester is widely used for crushing rice straws, wheat straws and corn straws, returning the crushed straws and the corn straws to the field as organic fertilizer, and avoids burning the straws to pollute the environment. The existing mowing blade is produced in a quenching mode, but the abrasion resistance is poor, and the blade needs to be frequently replaced, so that the agricultural production efficiency is influenced. The sandwich type mowing blade is embedded with the hard wear-resistant material layer in the middle of the cutting edge of the base body, and the hard wear-resistant material layer has a cutting effect, so that the service life is greatly prolonged. Simultaneously, the both sides of stereoplasm wearing materials layer are by the centre gripping of base member blade, and are being fixed, because the base member wears out earlier, expose new stereoplasm wearing materials ceaselessly, have guaranteed the continuation and the durability of cutting.

Description

Sandwich type mowing blade

Technical Field

The invention belongs to the field of agricultural machinery and garden machinery, and particularly relates to a cutting blade for mowing and smashing straws, which is arranged on the agricultural machinery and the garden machinery.

Background

In the field of agricultural machinery and garden machinery, a lot of machinery needs to mow, smash grass, straws and the like, a lot of cutting blades, particularly harvesters need to be used, seasonal crops such as rice, wheat and the like need to be captured, particularly, the national environmental protection requirement can not be met, the straws need to be smashed and returned to the field, a lot of mowing blades need to be used, the existing mowing blades are produced in a quenching mode, the durability of the existing mowing blades is poor, the blades need to be frequently replaced, the agricultural production efficiency is influenced, and particularly, the seasonal crops such as rice are strong.

Disclosure of Invention

In view of the above, the present invention provides a sandwich-type grass cutting blade, which has a hard wear-resistant material layer embedded in the middle of the cutting edge of the original grass cutting blade, so as to improve the durability of the grass cutting blade.

In order to solve the above technical problem, the present invention discloses a sandwich type grass cutting blade, comprising: a blade base body; the hard wear-resistant material layer is clamped in the middle of the cutting edge of the blade base body, and the hard wear-resistant material layer is clamped and fixed by the cutting edge of the base body in the same direction as the cutting edge to play a cutting role.

Compared with the prior art, the invention can obtain the following technical effects:

first, the substrate plays a certain cutting role, no different from the original blade. Meanwhile, when the lawn mower is used for cutting, the base body is firstly worn, a new hard wear-resistant material layer is continuously exposed, the cutting continuity is guaranteed, and the service life of the lawn mower is greatly prolonged.

Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a cutting edge elevational view of a sandwich grass cutting blade in accordance with an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cutting edge of a sandwich grass cutting blade in accordance with an embodiment of the present invention;

FIG. 3 is a side view of a cartridge-style grass cutting blade according to an embodiment of the present invention, with one type of blade being generally laterally cut;

FIG. 4 is a side view of a sandwich grass cutting blade according to an embodiment of the present invention, showing the entire side of another blade

FIG. 5 is an embodiment of a sandwich grass cutting blade according to an embodiment of the present invention;

FIG. 6 is another embodiment of a sandwich grass cutting blade according to an embodiment of the present invention;

reference numerals

The wear-resistant material comprises a base body 10, a base body grinding part 11, a base body 20, a base body grinding part 21, a hard wear-resistant material layer 30, a silver soldering sheet 40, an integral base body 50 and a groove 51 formed after the integral base body is subjected to wire cutting.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings and examples, so that how to implement the embodiments of the present invention by using technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. Two embodiments are presented:

the first embodiment:

FIG. 5 is a front view of the cutting edge of a sandwich grass cutting blade according to an embodiment of the present invention before sintering. FIG. 1 is a front view of a cutting edge of a sandwich grass cutting blade according to an embodiment of the present invention after sintering, in which silver solder tabs 40 have been melted for soldering. Referring to fig. 5, as shown in fig. 5, a sandwich lawnmower blade includes a base 10; a base 20; a hard wear-resistant material layer 30 disposed between the base 10 and the base 20; a silver solder tab 40 disposed intermediate the substrate 10 and the hard wear-resistant material layer 30; and a silver solder tab 40 disposed intermediate the substrate 20 and the hard wear-resistant material layer 30. And sintering and melting the silver welding sheet 40 through a vacuum furnace, so that the base body 10, the hard wear-resistant material layer 30 and the upper base body 20 are firmly combined to obtain the product shown in the figure 1. The hard wear-resistant material layer 30 in this example is made of cemented carbide pieces.

The implementation steps are as follows:

a. primary grinding of a matrix: referring to fig. 2, a substrate grinding portion 11 of a substrate 10 is ground to a single surface; the substrate grinding part 21 of the substrate 20 grinds a single surface, and a certain inclination is required to be ground, so that a certain sharpness is ensured, and the hard wear-resistant material layer 30 can be firmly held;

b. placing: referring to fig. 5, the substrate 10, the silver solder tab 40, the hard wear-resistant material layer 30, the silver solder tab 40, and the substrate 20 are sequentially disposed on the fixture from bottom to top. Ensuring that the left base body grinding part 11, the left base body grinding part 21 and the hard wear-resistant material layer 30 are overlapped;

c. and (3) sintering: b, sintering the raw materials placed in the step b in a vacuum furnace at the sintering temperature of 700-800 ℃ for 6-8 hours;

d. fine grinding: after the product is discharged, please refer to fig. 2, at which time the silver soldering tab 40 has melted for soldering. The edge, namely the substrate grinding part 11 and the substrate grinding part 21, are polished to improve the sharpness and ensure that the hard wear-resistant material layer 30 is firmly held.

The second embodiment:

a. groove cutting: referring to fig. 6, a groove 51 is cut out of the monolithic substrate 50 by laser or linear cutting; b. assembling: coating silver solder on two sides of the hard wear-resistant material layer 30, and then plugging the hard wear-resistant material layer into the groove 51 formed by the linear cutting of the integral substrate;

c. and (3) sintering: b, placing the assembled raw materials in the step b into a vacuum furnace for sintering at the sintering temperature of 700-800 ℃ for 6-8 hours;

d. grinding: after the product is discharged from the furnace, the cutting edge is polished, so that the hard wear-resistant material layer 30 is firmly held while the sharpness is improved.

In conclusion, the hard wear-resistant material layer is embedded in the middle of the mowing knife, so that the service life is greatly prolonged, and the agricultural production efficiency is improved.

The foregoing illustrates and describes several preferred embodiments of the present invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A sandwich grass cutting blade comprising:

a blade base body;

the hard wear-resistant material layer is clamped in the middle of the cutting edge of the base body, and the hard wear-resistant material layer is in the same direction with the cutting edge and is clamped and fixed by the cutting edge of the base body.

2. The sandwich lawnmower blade of claim 1, wherein the layer of hard, wear resistant material is held on both sides by the substrate, and has a portion embedded within the substrate and a portion exposed at the cutting edge of the substrate for cutting.

3. The sandwich lawnmower blade of claim 1, wherein the substrate has a lower wear resistance than the layer of hard wear resistant material, and wherein as the substrate wears, the newly exposed layer of hard wear resistant material performs a cutting action.

4. Sandwich grass cutting blade according to claim 1, characterized in that the thickness of the hard, wear-resistant material layer must not be too thick to guarantee a certain sharpness and at the same time penetrate a certain depth into the base body to guarantee a service life.

5. The sandwich grass cutting blade according to claim 1, wherein the hard wear resistant material may be diamond particles, or may be hard wear resistant materials such as tungsten carbide particles, cemented carbide pieces, diamond compacts and the like.