CN217120481U - Shredding blade, shredding cutter and shredder - Google Patents

Abstract

The utility model provides a shredded paper blade and shredded paper cutter, kneader, wherein shredded paper blade includes the cutting edge of the annular blade main part of ring form and a plurality of evenly distributed in blade main part periphery, the shaft hole has been seted up at blade main part center, the cutting edge extends formation V-arrangement cutting groove along its most advanced to blade main part direction to make the cutting edge form left cutting edge and right cutting edge along blade main part axial, blade main part, left cutting edge and right cutting edge are through injection moulding process integrated into one piece. The utility model discloses a pass through injection molding technology integrated into one piece with left cutting edge, right cutting edge and blade main part, improved production efficiency greatly, save the cost.

Description

Shredding blade, shredding cutter and shredder

Technical Field

The utility model relates to a kneader technical field particularly, the utility model relates to a shredding blade, shredding cutter and kneader.

Background

The blades of the paper shredder in the market are all processed by metal blades, wherein most of the blades are punched by metal plates. In order to improve the sharpness of the knife tip and reduce the paper shredding load, a concave inclined structure is generally arranged in the middle of the knife edge to form a left knife edge and a right knife edge. However, the stamping forming process can only stamp one blade at a time and can only process the oblique angle of the tool nose in one direction, so the paper shredding blade is generally formed by combining a left blade and a right blade which are processed respectively into a group of blades to form a concave oblique structure in the middle of the tool nose, the production efficiency is low, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can improve production efficiency's shredded paper blade and use shredded paper cutter and kneader of this shredded paper blade.

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

first aspect provides a shredded paper blade, including the cutting edge of the annular blade main part of circle and a plurality of evenly distributed in blade main part periphery, the shaft hole has been seted up at blade main part center, the cutting edge extends formation V-arrangement along its most advanced to blade main part direction and cuts the groove to make the cutting edge form left cutting edge and right cutting edge along blade main part axial, blade main part, left cutting edge and right cutting edge are through injection moulding technology integrated into one piece.

Optionally, the blade body and the cutting edge are made of a plastic or alloy material.

In one embodiment, two surfaces of the blade, which are sequentially contacted with paper during paper shredding, are respectively a front blade surface and a rear blade surface, tangent lines of intersecting positions of the blade main body and the front blade surface and the rear blade surface are respectively a first tangent line and a second tangent line, and an included angle between the front blade surface and the first tangent line is larger than an included angle between the rear blade surface and the second tangent line.

In one embodiment, the left and right edges are provided with triangular facets, and the triangular facets of the left and right edges intersect and are symmetrically arranged.

In one embodiment, the triangular edge face intersects the rake face and the flank face, and the length of the intersection of the triangular edge face and the rake face is less than the length of the intersection of the triangular edge face and the flank face.

In one embodiment, the shaft hole is provided with splines inside.

As a second aspect, the utility model provides a shredding cutter, it includes a plurality of above-mentioned shredding blades and wears to locate the arbor that the shaft hole couples together the shredding blade.

As a third aspect, the present invention relates to a paper shredder, including the above-mentioned shredding cutter.

The utility model provides a beneficial effect that technical scheme brought is: the utility model discloses a pass through injection molding technology integrated into one piece with left cutting edge, right cutting edge and blade main part, improved production efficiency greatly, save the cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments of the present invention will be briefly described below.

Fig. 1 is a schematic structural view of a paper shredding blade according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure.

It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present invention is not limited in this respect.

The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "coupled" may refer to direct coupling or indirect coupling via intermediate members (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.

It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing the devices, modules or units, and are not used for limiting the devices, modules or units to be different devices, modules or units, and also for limiting the sequence or interdependence of the functions performed by the devices, modules or units.

Referring to fig. 1, the utility model provides a paper shredding blade 100, including blade main part 10 and a plurality of cutting edge 20 with blade main part 10 integrated into one piece, blade main part 10 is the ring form, and its center is established to be used for wearing to establish the shaft hole 11 of arbor, the inboard spline 12 that forms in shaft hole, a plurality of cutting edge 20 evenly distributed in the periphery of blade main part 10.

The blade 20 is provided with a V-shaped cutting groove (not shown) along the direction from the tip end thereof toward the blade body 10, so that the blade 20 is divided into a left blade 21 and a right blade 22 along the axial direction of the blade body 10, thereby improving the sharpness of the blade 20 and reducing the paper shredding load.

The two sides that cutting edge and paper contact successively when the definition is shredded are rake face 23 and back knife face 24 respectively, and the tangent line of blade main part 10 and rake face and the crossing position of back knife face is first tangent line and second tangent line respectively, the contained angle between rake face and the first tangent line is greater than the contained angle between back knife face and the second tangent line.

Alternatively, the left and right blades 21, 22 are each provided with a triangular blade face 211, 221, and the triangular blade faces of the left and right blades 21, 22 intersect and are symmetrically arranged. The triangular cutting face intersects with the front cutter face and the rear cutter face, and the length of the intersection line of the triangular cutting face and the front cutter face is smaller than the length of the intersection line of the triangular cutting face and the rear cutter face.

The shredder blade 100 is injection molded from a material that is strong, tough, and resistant to high and low temperatures, and may be plastic or an alloy that can be injection molded.

Furthermore, a plurality of the paper shredding blades are connected with the cutter shaft to form a paper shredding cutter which is applied to a paper shredder.

It should be appreciated that the shredding blade 100 of the present invention is generally applicable to shredders that have a high shredding effect and a low shredding capacity.

The above description is only a preferred embodiment of the invention and is intended to illustrate the technical principles applied. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features are mutually replaced with (but not limited to) technical features having similar functions of the present invention.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims (8)

1. The utility model provides a paper shredding blade, includes the cutting edge of the annular blade main part of circle and a plurality of evenly distributed in blade main part periphery, the shaft hole has been seted up at blade main part center, its characterized in that, the cutting edge extends formation V-arrangement along its most advanced to blade main part direction and cuts the groove to make the cutting edge form left cutting edge and right cutting edge along blade main part axial, blade main part, left cutting edge and right cutting edge are through the technology integrated into one piece that moulds plastics.

2. The shredder blade of claim 1 wherein the blade body and blade edge are made of a plastic or alloy material.

3. The paper shredding blade according to claim 1, wherein two surfaces of the blade body which contact the paper in sequence when shredding paper are defined as a front blade surface and a rear blade surface, respectively, and tangential lines at intersection positions of the blade body and the front blade surface and the rear blade surface are a first tangential line and a second tangential line, respectively, and an included angle between the front blade surface and the first tangential line is larger than an included angle between the rear blade surface and the second tangential line.

4. The shredding blade of claim 3 wherein the left and right edges each have triangular facets and the triangular facets of the left and right edges intersect and are symmetrically disposed.

5. The shredder blade of claim 4 wherein the triangular facet intersects the rake face and the relief face and the length of the line of intersection of the triangular facet and the rake face is less than the length of the line of intersection of the triangular facet and the relief face.

6. The shredder blade of claim 1 wherein the shaft hole is splined on the inside.

7. A paper shredding cutter, characterized by comprising a plurality of paper shredding blades as claimed in any one of claims 1 to 6, and a cutter shaft penetrating through the shaft hole to connect the paper shredding blades.

8. A paper shredder, characterized in that it comprises the shredding cutter according to claim 7.

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