JP3101199U - Shredder oval disc cutting blade - Google Patents

Abstract

An object of the present invention is to reduce production material costs, reduce the overall weight of a cutting blade, reduce motor load, and save energy.
An elliptical disc-type cutting blade is formed by integrally molding a thin metal plate by a punch press, and a peripheral edge of the cutting blade is integrally formed in a saw blade shape, and is integrally formed inward from a saw-toothed periphery. The horizontally stretched blade width is used to cut the paper in the vertical direction, and the hook-shaped blade integrally formed at both ends of the elliptical long axis of the blade width cuts the paper in the horizontal direction and forms a bipyramid paper piece. No, it is formed to reduce production material cost and motor load, achieve energy saving function, and have competitiveness in shredder market.
[Selection diagram] FIG.

Description

  The present invention relates to an elliptical disk-type cutting blade of a kind of shredder, and more particularly, to an elliptical disk-type cutting blade formed by punching a thin metal plate.

  As is well known, the principle of operation of a paper shredder is that a plurality of cutting blades are combined with spacers and attached to a rotary shaft, and a motor and a gear and gear box are attached. Utilizing this, two parallel and relatively rotating rotary shafts are driven to cut the paper passing between them to form a strip. Shredders are classified into two types, a strip-cut shredders and a cross-cut shredders, according to the difference in the type of mechanical cutting. The cutting blade is provided with at least one hook-like blade on the cutting blade, the cutting blade is spirally arranged on the rotating shaft, and not only cuts the paper vertically but also in a horizontal shape, It is cut into 4 mm x 40 mm crushed paper pieces.

  FIG. 1 is a combined perspective view of a traditional cutting blade, and FIG. 2 is a plan view showing the operation of the traditional cutting blade. This traditional cutting blade is made of a metal plate with a thickness of about 2 mm, punch-processed by a machine using a mold to form a circular blade, and a polygonal center hole A1 for passing a rotation axis through the center of the blade. A hook-like blade A2 is provided on the circumference of the blade and projects outward at intervals of 120 degrees. As shown, when two blades combined with the rotation axis B are merged in a back-to-back manner to form a set of cutting blades A, the hook-like blades of the two blades are combined. Forms a substantially V-shaped cutting edge A3, and is separated by a spacer ring (not shown) from the opposite rotating shaft B 'to form another set of cutting blades formed in a face-to-face manner. A 'is provided. When the paper passes between the two rotating shafts B and B 'rotating in opposite directions, the paper is cut by the relative rotation between the blade width A4 and the blade width A4 of the cutting blade circumference, and the hook-shaped blade is further cut. Due to the relative movement of the blade width A4 opposing A2, the paper strip already cut is cut laterally into a crushed paper piece of 4 mm × 40 mm.

  In order to smoothly cut the paper horizontally in the traditional crushing process described above, usually a blade having an appropriate angle and a very sharp blade is required. The longer the time of use, the more the blade wears, and the sharpness of the blade decreases, so that the product quality of the blade becomes inconsistent unless it is replaced with a new processing die. Therefore, the working life of the processing mold is shortened, and the cost for a new mold is increased. In addition, the thickness of the traditional cutting blade is equal to the width of the paper after cutting, and if the cutting blade is too thin, the cutting blade will deform and break if the cutting blade is too thin Sometimes. However, this makes it impossible to reduce the material cost of the cutting blade, making it impossible to cope with the price competition of shredders. In addition, the thickness of the traditional cutting blade is equal to the width of the paper strip after cutting, and the location of this width is the horizontal cutting point, so that as the cutting width becomes narrower, the motor output power required for horizontal cutting becomes smaller. It becomes smaller, in other words, the energy of the motor can be saved. However, the width of the paper strip to be cut by the traditional cutting blade can be as large as 4 mm, so that a relatively large power is required for the motor to cut the paper strip sideways by making a relative movement between the hook blade and the blade width. Was needed.

  The main object of the present invention is to provide a kind of shredder oval disc cutting blade, which punches thin metal pieces using a mold to form an oval disc cutting blade, It has been designed to reduce production material costs, reduce the overall weight of the cutting blade, reduce motor load and save energy.

  The next object of the present invention is to provide a kind of shredder elliptical disc cutting blade, which cuts the paper by changing the bending rate of the elliptical disc blade and narrows the two ends toward the middle. It is assumed that the paper is formed so as to have a gradually expanding bipyramidal paper piece and reduce the motor output power for cutting the cross section of the two ends sideways, thereby reducing the motor load and saving energy.

The invention according to claim 1 is an elliptical disk-type cutting blade formed by integrally molding a thin metal plate by a punch press, and the blade width of a flat plate edge is integrally formed inward from the periphery of the elliptical disk-type cutting blade. The blade is horizontally extended, and a hook-like blade is integrally formed at both ends of the elliptical long axis of the blade width, and the inner edge of the blade width is extended inward and downward to the bottom of the circular disk to form an arc-shaped disk body. And a shredder elliptical disc-type cutting blade.
According to a second aspect of the present invention, there is provided an elliptical disk-type cutting blade for a shredder according to the first aspect, wherein the periphery of the elliptical disk-type cutting blade is formed in a saw blade shape. It has a cutting blade.
According to a third aspect of the present invention, there is provided an elliptical disk-type cutting blade for a shredder according to the first aspect, wherein a polygonal hole is formed at a center of a bottom of the circular disk. I have.

  The elliptical disk-type cutting blade of the shredder of the present invention is an elliptical disk-type cutting blade obtained by integrally molding a thin metal plate by a punch press, and the peripheral edge of the cutting blade is integrally formed in a saw blade shape, and the saw tooth is formed. The width of the blade, which is horizontally extended inward from the periphery of the blade, is used to cut the paper vertically, and the hook-shaped blades integrally formed at both ends of the elliptical long axis of the blade width are used to cut the paper horizontally. Is cut into bipyramid paper strips to reduce production material costs and motor load, achieve energy saving functions, and be competitive in the shredder market.

  The elliptical disk-type cutting blade of the shredder of the present invention is an elliptical disk-type cutting blade formed by integrally forming a thin metal plate by a punch press, and the peripheral edge of the cutting blade is integrally formed in a saw blade shape, A flat board edge that is horizontally extended inward from the periphery of the shape is a blade width for cutting paper vertically, and a hook-shaped blade integrally formed at both ends of the elliptical long axis of the blade width. The paper is cut sideways to form a bipyramid piece of paper, the inner edge of the blade width extends inward and downward to the bottom of the circular disk to form an arc-shaped disk body, and a polygonal hole is formed at the center of the bottom of the circular disk. It is set up and used for penetration joining of the rotating shaft.

  Please refer to FIG. 3 to FIG. 3 is a plan view of the present invention, and FIGS. 4 and 5 are a cross-sectional view taken along line 4-4 and a cross-sectional view taken along line 5-5 of FIG. 3, respectively. The oval disk-type cutting blade 1 of the shredder of the present invention described in each of the above-mentioned drawings enables a maximum capacity of a sheet at a time for shredders of different standards. The present invention is an elliptical disc-type cutting blade made of a 0.2 mm metal plate as a material and punch-pressed using a mold, and the periphery 11 of the elliptical disc-type cutting blade is a partially enlarged view in FIG. As shown in the figure, the saw-tooth shape 110 is integrally formed, and the saw-tooth shape 110 has an action of pulling the paper downward. A flat board edge extending horizontally and inward from the periphery 11 of the saw-tooth shape 110 has a blade width 12 for cutting the paper in a vertical direction. The blade 13 is formed and the already cut paper strip is cut sideways to form broken paper pieces. An arc-shaped disk body 14 is formed inwardly and downwardly from the inner edge 120 of the blade width 12 to the circular disk bottom 15, and a polygonal hole 16 is formed at the center of the circular disk bottom 15, so that the rotation shaft can pass therethrough. Provided for joining.

  FIG. 6 is a combined perspective view of the present invention, in which the most important cutting of a shredder is performed by combining the above-mentioned thin metal plate by punch press and standardizing an elliptical disc-type cutting blade with two rotating shafts in order. Figure 3 shows a rotating tool for use. Among them, the elliptical disc type cutting blade combined with one rotating shaft is positive + anti + positive + anti. . . Are arranged and combined in the manner described above, and the elliptical disc-type cutting blades combined with the opposing rotating shafts are anti-positive + anti-positive. . . Are arranged and combined in the manner described above.

  As shown in FIG. 6, the first cutting blade 21 and the second cutting blade 22 on the first rotating shaft 2 located below are arranged in a forward and reverse manner, and are directed inward and downward from the blade width inner edge of the cutting blade. The circular disk bottom of the first cutting blade 21 and the second cutting blade 22 are merged into contact with each other, so that the first cutting blade 21 and the second cutting blade 22 are in contact with each other. The hook-shaped blade forms an open space 23 in a separated state. Conversely, the first cutting blade 31 and the second cutting blade 32 on the second rotating shaft 3 located above are arranged in an anti-positive manner, and likewise circle inward and downward from the blade width inner edge of the cutting blade. Since the arc-shaped disc body is formed, the arc-shaped disc bodies of the first cutting blade 31 and the second cutting blade 32 are separated from each other, except that the hooks of the first cutting blade 31 and the second cutting blade 32 are separated. The blades are merged into contact. With the above arrangement, when the two rotating shafts rotate in opposite directions, the hook blade 33 after the merge of the first cutting blade 31 and the second cutting blade 32 on the upper second rotating shaft 3 is just below. The first cutting blade 21 and the second cutting blade 22 can be inserted into the open spaces 23.

  7 and 8 are views showing the operation of the present invention. Due to the change of the major axis and minor axis of the elliptical disc-shaped cutting blade and the curvature of the cutting blade, the blade width of the corresponding cutting blade maintains a constant bonding relationship, that is, the end face projection direction. Observed from, the overlap between the cutting blades on the different rotation axes of the apparatus and the cutting blades is constantly fixed, ie, when the two rotation axes rotate in opposite directions, the blade width 12 and the blade width The relative movement between the twelve generates a cutting effect like scissors (see FIG. 7). When the hooked blades 13 at both ends of the elliptical long axis of the cutting blade set rotate to reach the corresponding elliptical short axis position of the cutting blade set, the hooked blades 13 of the elliptical cutting blade long axis correspond to the corresponding elliptical shape. The paper strip is cut in combination with the blade width 12 at the short axis position of the cutting blade (see FIG. 8).

  FIG. 9 and FIG. 10 are views showing the crushed paper by the oval disk type cutting blade of the present invention and the appearance of the crushed paper after cutting. Due to the change in curvature of the elliptical disc-type cutting blade, the paper is cut into a bipyramidal paper piece 4 that gradually expands from a narrow end 41 at the two ends to an intermediate enlarged portion 42. The cutting position is set to the horizontal cutting position.Thus, the thinner the cross section, the smaller the motor output power required for the horizontal cutting.In other words, the motor supplies the power required for the horizontal cutting with the lightest load, and the motor load is reduced. That is, the power consumption rate is reduced, and the service life of the motor is extended.

  In addition, the traditional cutting blade was formed by punch-pressing a metal plate with a thickness of about 2 mm, while the elliptical disc-type cutting blade of the present invention was formed by punch-pressing a 0.2 mm metal plate. The material cost is very high, and the reduced weight of the cutting blade allows the motor to supply the power needed to cut the paper with the lightest load, thus reducing the motor load and extending the life of the motor and reducing power consumption. Is reduced. As a result, production costs can be reduced and competitiveness in the shredder market can be greatly increased.

FIG. 2 is a perspective view of a combination of a traditional cutting blade. It is a plane operation | movement display figure of a traditional cutting blade. FIG. 3 is a plan view of the present invention. FIG. 4 is a sectional view taken along line 4-4 of FIG. 3. FIG. 5 is a sectional view taken along line 5-5 in FIG. 3. It is a combination perspective view of the present invention. FIG. 4 is a diagram showing the operation of the elliptical disc-type cutting blade of the present invention when cutting paper. FIG. 4 is a diagram showing the operation of the elliptical disc-type cutting blade of the present invention when cutting paper. FIG. 4 is a view showing the broken paper of the elliptical disc-type cutting blade of the present invention. FIG. 4 is a view showing the appearance of the crushed paper after cutting the elliptical disc-type cutting blade of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Oval disk-type cutting blade 11 Peripheral 110 Hook tooth shape 12 Blade width 13 Hook-shaped blade 14 Arc-shaped disk main body 15 Circular disk bottom 16 Polygon hole 2 First rotating shaft 21 First cutting blade 22 Second cutting blade 23 Open space 3 Second rotating shaft 31 First cutting blade 32 Second cutting blade 33 Hook-shaped blade 4 Bipyramid paper piece 41 Thin part 42 Enlarged part

Claims (3)

  An elliptical disc-type cutting blade obtained by integrally molding a thin metal plate by a punch press, wherein the blade width of a flat board edge is horizontally extended inward from the periphery of the elliptical disc-type cutting blade, and the blade is The shredder is characterized in that hook-shaped blades are integrally formed at both ends of the long elliptical major axis, and the inner edge of the blade width is extended inward and downward to the bottom of the circular disk to form an arc-shaped disk body. Oval disk type cutting blade.   The elliptical disk-type cutting blade of a shredder according to claim 1, wherein the periphery of the elliptical disk-type cutting blade is formed in a saw blade shape.   2. The oval disk cutting blade of a shredder according to claim 1, wherein a polygonal hole is formed at the center of the bottom of the circular disk.

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