CN219379130U - Slitting blade - Google Patents

Abstract

The utility model discloses a slitting blade which comprises a cutter body base body and a hard alloy blade body, wherein a first connecting structure is arranged on the outer circle of the cutter body base body, a second connecting structure is arranged on the inner circle of the hard alloy blade body, and the first connecting structure and the second connecting structure are in socket fit. Through the interior outer socket joint adaptation of connection structure one and connection structure two, interior outer socket joint adaptation is after the freezing shrink of inside cutter body base member liquid nitrogen, enters into the carbide sword body inside, will connect structure two to expand fully when the room temperature is resumpted naturally, and the reuse of inside cutter body base member can be accomplished only to the segmentation of outside carbide sword body circumference when the wearing and tearing of outside carbide sword body are serious to the formation socket joint adaptation structure.

Description

Slitting blade

Technical Field

The utility model relates to the technical field of cutting tools, in particular to a cutting blade.

Background

The slitting tool, also known as a slitter blade, is one of the important components of slitter equipment. The improper selection of the cutter blade of the dividing and cutting machine easily causes the reduction of the service life of the dividing and cutting blade, the requirement of dividing and cutting indexes cannot be met, raw edges are generated on the dividing and cutting materials, a large amount of dividing and cutting powder scraps are generated, and the like.

The existing cutting tool adopts an inner layer and an outer layer, the outer side is made of alloy materials, the inner side is made of high-speed steel materials, and the search CN205437186U discloses a composite disc cutter which consists of two parts, namely an outer cutter body of a cutting part made of high-speed steel or high-alloy steel and the like and an inner cutter body of a non-cutting part made of low-alloy steel materials, wherein the two cutter bodies are fixedly connected by welding. The inner and outer layers can be fixedly connected in a welding mode without relative circumferential movement, but the inner cutter body cannot be reused, so that the use cost of a user is high. CN105618843a discloses a composite structure disc roll shear. The novel inner ring cutter is characterized by comprising an inner ring cutter body and an outer ring cutter body, wherein the inner ring cutter body is of an I-shaped structure, screw holes are formed in the inner ring cutter body and the outer ring cutter body, and the inner ring cutter body is fixedly connected with the outer ring cutter body. The inner cutter body and the outer cutter body can be assembled, so that the problem that the inner cutter body cannot be reused is solved, but the inner cutter body needs to have a thickness meeting the requirement of a screw installation space, so that the inner cutter body cannot be applied to a slitting blade with a thinner thickness. CN202123287U discloses a circular rolling shear, which has the characteristic of improving the service life of the rolling shear. The rolling shear comprises a cutter base body and a blade matched with the periphery of the cutter base body, wherein a positioning piece for preventing the blade from falling off is arranged between the cutter base body and the blade. The base body and the blade are installed through the locating piece, the base body and the blade are assembled in an interference fit mode in the specification, when the blade is disassembled, the locating piece needs to be pulled away from the base body and the blade body with great force, then the base body and the blade body are separated with great force, structural damage is easily caused to the installation face of the base body in the separation process, and the base body cannot be reused.

The inventors therefore propose a double-layered slitting blade that enables reuse of the inner matrix.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a slitting blade, which can effectively reduce the cost of cutting tools through an inner base body and an outer alloy material, and the inner base body can be reused when the outer alloy material is seriously worn and needs to be replaced, so that the structural damage of a mounting surface of the inner base body is avoided.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a cutting blade, includes cutter body base member and carbide sword body, is provided with on the cutter body base member excircle and links up structure one, is provided with on the carbide sword body excircle and links up structure two, links up structure one and links up the interior outer socket joint adaptation of structure two.

Through the interior outer socket joint adaptation of connection structure one and connection structure two, interior outer socket joint adaptation is after the freezing shrink of inside cutter body base member liquid nitrogen, enters into the carbide sword body inside, will connect structure two to expand fully when the room temperature is resumpted naturally, and the reuse of inside cutter body base member can be accomplished only to the segmentation of outside carbide sword body circumference when the wearing and tearing of outside carbide sword body are serious to the formation socket joint adaptation structure.

The improvement is made on the basis of the scheme, the first connecting structure is a plurality of convex parts which are circumferentially distributed at equal intervals, the second connecting structure is a plurality of concave parts which are circumferentially distributed at equal intervals, and the convex parts are matched with the concave parts. The inner and outer socket structure is realized through a liquid nitrogen cryogenic process of a plurality of convex parts and matched concave parts which are distributed circumferentially at equal intervals, a quota and an inner cutter body substrate. The positions of the convex part and the concave part can be exchanged.

The improvement is made on the basis of the scheme, and the thickness of the convex part and the depth of the concave part are respectively 0.3-3 mm. After the liquid nitrogen deep cooling treatment of the cutter body matrix, the first connecting structure is in a cold shrinkage state, and the thickness of the convex part and the depth of the concave part are both 0.5mm because the cold shrinkage degree of the cutter body matrix is changed less.

On the basis of the scheme, the improvement is made that the depth of the concave part is distributed along the structure with the shallow middle depth and the shallow two ends in the length direction and the structure with the shallow middle depth and the shallow two ends in the thickness direction. Through the unique design of the shape and the depth of the concave part, the concave part and the convex part can be automatically guided by expanding outwards when the inner cutter body matrix is restored to room temperature, the adaptation effect between the inner cutter body matrix and the outer hard alloy blade body is improved, and the cutting performance of the cutting tool is improved.

The cutter body is characterized in that the cutter body comprises a cutter body base body, wherein the cutter body base body is provided with a plurality of concave arc-shaped surfaces, and the cutter body base body is provided with a plurality of concave arc-shaped surfaces. Through setting up dodging the groove can make prevent when the excision of outer carbide sword body to cause structural damage to cutter body matrix structure, can also release the excision position simultaneously.

The improvement is made on the basis of the scheme, and the first connecting structure and the second connecting structure are at least provided with two groups along the axial direction. Through setting up two sets of axially, can improve the inside and outside socket joint adaptation degree of interior cutter body base member and outer carbide sword body, can guarantee through the promotion of adaptation degree that the cutting tool satisfies the condition of axial atress.

The improvement is made on the basis of the scheme, and the first connecting structures or the second connecting structures of two adjacent groups are distributed in a staggered mode. The radial stress of the cutting tool can be effectively dispersed during the axial two-layer arrangement through staggered arrangement, and the cutting performance of the cutting tool is improved.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of the overall structure of the cutter body base in FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 4 is a schematic view of the overall structure of the cutter body base in FIG. 3;

FIG. 5 is a schematic view of the overall structure of a cemented carbide blade body according to the present utility model;

FIG. 6 is a partial schematic view of the outer ring end of the cemented carbide blade body of the present utility model;

FIG. 7 is a cross-sectional view of an overall structure according to an embodiment of the present utility model.

In the figure: 1. a cutter body base; 2. a hard alloy blade body; 3. a first connecting structure; 4. a second connecting structure; 5. avoiding the groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Embodiment 1, as shown in fig. 1, fig. 2, fig. 5, fig. 6, a slitting blade, including cutter body base 1 and carbide blade body 2, be provided with on the cutter body base 1 excircle and link up structure one 3, be provided with on the carbide blade body 2 interior circle and link up structure two 4, link up structure one 3 and link up structure two 4 inside and outside socket joint adaptation, through link up structure one 3 and link up structure two 4 inside and outside socket joint adaptation, inside and outside socket joint adaptation is that after the freezing of inside cutter body base 2 contracts inwards, enter into inside the carbide blade body 1, will link up structure two 4 and expand fully when retrieving the room temperature naturally, a kind of socket joint adaptation structure that forms, when outside carbide blade body 1 severely wears, only need to cut off outside carbide blade body 2 circumference segmentation can accomplish the reuse of inside cutter body base 1. The first connecting structure 3 is a plurality of convex parts which are circumferentially distributed at equal intervals, the second connecting structure 4 is a plurality of concave parts which are circumferentially distributed at equal intervals, and the convex parts are matched with the concave parts. In some cases, the positions of the convex portion and the concave portion may be interchanged. Namely, the convex part is arranged on the second connecting structure 4, the concave part is arranged on the first connecting structure 3, the thickness of the convex part and the depth of the concave part are both 0.3-3 mm, the first connecting structure is in a cold shrinkage state after liquid nitrogen cryogenic treatment of the cutter body substrate 1, and the thickness of the convex part and the depth of the concave part are both 0.5mm because the cold shrinkage degree of the cutter body substrate 1 is less.

In example 2, the structure layout of the concave portion is modified in such a manner that the depth of the concave portion is shallow at both ends in the middle depth direction and the depth of the concave portion is shallow at both ends in the middle depth direction in the thickness direction as shown in fig. 2, 4, 5 and 6. Through the unique design of concave part shape and degree of depth, the convex part also needs to carry out corresponding design, and convex part and concave part all adopt streamlined setting, and the appearance of convex part and concave part all adopts curve design, can make concave part and convex part outwards expand and carry out automatic correction (the resistance of correcting process is little) when interior cutter body base member 1 resumes room temperature through this kind of design, improves the adaptation effect between interior cutter body base member 1 and outer carbide sword body 2 two, improves the cutting performance of cutting tool.

In embodiment 3, the following improvement is made on the basis of the above embodiment 2, as shown in fig. 2 and 3, the outer circle of the cutter body substrate 1 is further provided with a plurality of avoidance grooves 5 which are circumferentially arranged at equal intervals, and the avoidance grooves 5 comprise an arc-shaped surface one which is arranged in a concave manner and positioned in the middle, and arc-shaped surfaces two which are positioned on two sides and are arranged in an outer arch manner. The avoidance groove 5 can prevent structural damage to the structure of the cutter body matrix 1 when the outer hard alloy blade body is cut, and the cutting position can be released.

Embodiment 4, an improvement is made on the basis of the foregoing embodiment 3, as shown in fig. 7, where at least two groups of the first joining structure 3 and the second joining structure 4 are arranged along the axial direction, and the joining structures 3 or the joining structures 4 of two adjacent groups are arranged in a staggered manner. Through setting up two sets of axially, can improve the interior outer socket joint adaptation degree of interior cutter body base member 1 and outer carbide sword body 2, can guarantee through the promotion of adaptation degree that the cutting tool satisfies the condition of axial atress, can make the cutting tool radial stress obtain effectively dispersion treatment when distributing in axial two-layer through crisscross laying, improves the cutting performance of cutting tool.

The above description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto. The substitutions may be partial structures, devices, or method steps, or may be a complete solution. The technical proposal and the utility model concept are equivalent to or changed in accordance with the utility model, and the utility model is covered in the protection scope of the utility model.

Claims (8)

1. The utility model provides a slitting blade, its characterized in that includes cutter body base member (1) and carbide sword body (2), is provided with on the excircle of cutter body base member (1) and links up structure one (3), is provided with on the interior circle of carbide sword body (2) and links up structure two (4), links up structure one (3) and links up structure two (4) inside and outside socket joint adaptation.

2. The slitting blade according to claim 1, wherein the first engagement structure (3) is a plurality of equally spaced circumferentially arranged protrusions and the second engagement structure (4) is a plurality of equally spaced circumferentially arranged recesses, the protrusions and recesses being adapted.

3. A slitting blade according to claim 2, wherein the positions of the projections and recesses are interchanged.

4. A slitting blade according to claim 2, wherein the thickness of the protrusions and the depth of the recesses are each 0.3-3 mm.

5. A slitting blade according to claim 2, wherein the depth of the recess is arranged in a structure with a depth in the length direction being shallow at both ends of the middle depth and in a structure with a depth in the thickness direction being shallow at both ends of the middle depth.

6. The slitting blade according to claim 1, wherein the outer circle of the blade body base body (1) is further provided with a plurality of avoidance grooves (5) which are circumferentially arranged at equal intervals, and the avoidance grooves (5) comprise an arc-shaped surface I which is arranged in a concave manner and is positioned in the middle, and arc-shaped surfaces II which are arranged on two sides and are arranged in an outer arch manner.

7. A slitting blade according to claim 1, wherein the engagement means (3) and the engagement means (4) are arranged in at least two groups in the axial direction.

8. A slitting blade according to claim 7, wherein two adjacent sets of said engagement structures one (3) or two (4) are arranged in staggered arrangement.