JP3102116U - Shredder circular corrugated blades and blade modules - Google Patents

Abstract

A shredder circular corrugated blade and blade module are provided.
A circular corrugated blade (1) formed by punch-pressing a thin metal plate, comprising a perimeter (11) and a corrugated blade portion (12), wherein the blade portion has two blade pieces having a first curved surface, Two cutting edge pieces having two curved surfaces are alternately arranged in the circumferential direction, and a claw 13 is formed around the cutting edge piece having the first curved surface. Among them, the circular cutting edge portion of the circular corrugated blade cuts the paper lengthwise, and the pawl cuts the cut paper strip horizontally to form a bipyramid paper piece. Also, the circular corrugated blade module comprises two circular corrugated blades.
[Selection diagram] FIG.

Description

  The present invention relates to a type of shredder blade, and more particularly to a circular corrugated blade module base formed by punching a thin metal piece or a circular corrugated blade module formed integrally by die casting.

  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 the shredding process using the above-mentioned traditional blades, an extremely sharp blade is usually used at an appropriate angle so that the paper can be cut laterally smoothly, but since the blade is formed by a punch press, a punch is used. If the press die is used for a longer time and wears out, the sharpness of the blade to be manufactured becomes lower, and this problem cannot be solved without replacing the punch press die. In order to maintain quality, the expiration date of the mold has to be shortened, which has increased the production costs associated with mold replacement. In addition, the thickness of the traditional blade is equal to the width of the paper after cutting, and in order to ensure the strength of the blade when cutting transversely, the thickness of the blade must not be too thin, which will And prevent rupture. However, such restrictions are disadvantageous to shredder price competition in a situation where material costs cannot be reduced. In addition, traditional blades have a thickness equal to the width of the paper after cutting, and this width is located at the transverse cutting point, so that as the cross-section becomes narrower, the output power required for transverse cutting becomes smaller. It becomes smaller, in other words, the motor output can be saved. However, since the paper width of a traditional blade is 4 mm, the motor needs a relatively large output power to cut the paper sideways by making relative movement between the hook-shaped blade and the hub. did.

The present invention has been made in view of the drawbacks of known techniques, and in order to improve them.
The main object of the present invention is to provide a kind of shredder circular corrugated blade, which is made by molding a thin piece of metal with a punch press, thereby reducing production material cost and overall blade weight. Thus, the motor load can be reduced to reduce power consumption.

  Another object of the present invention is to provide a kind of shredder circular corrugated blade module, in which circular corrugated blades are combined in a face-to-face or back-to-back manner. The blade set is a blade module in which two are integrally formed by a die casting method.

  Another object of the present invention is to provide a circular corrugated blade of a shredder, which cuts the paper by changing the curved surface of the circular corrugated blade and forms a bipyramid paper piece that gradually expands from both ends toward the middle, It is assumed that the motor output power required to cut the cut surfaces at both ends in the horizontal direction is reduced, so that the motor load is reduced and the power consumption is reduced.

  In order to achieve the above object, the present invention provides a circular corrugated blade formed by punching a thin metal plate, which has a periphery and a corrugated edge portion, wherein the edge portion has a first curved surface. Two blade pieces and two blade pieces having the second curved surface are alternately arranged in the circumferential direction, and a claw is formed around the blade piece having the first curved surface. Among them, the circular cutting edge portion of the circular corrugated blade cuts the paper lengthwise, and the pawl cuts the cut paper strip horizontally to form a bipyramid paper piece.

  According to one embodiment of the present invention, there is provided a one-piece circular corrugated blade module, the circular corrugated blade module comprising two circular corrugated blades, each circular corrugated blade comprising a periphery and a corrugated cutting edge portion, The cutting edge portion includes two cutting edge pieces having a first curved surface and two cutting edge pieces having a second curved surface alternately arranged in a circumferential direction, and is provided around a cutting edge piece having a first curved surface. The paper after the claws are formed, the circular corrugated blades are arranged in a manner corresponding to each other with the blade pieces having the same curved surface, and the circular corrugated blades cut the paper vertically and the claws are cut vertically. The strip is cut sideways to form a bipyramid paper strip.

  According to one embodiment of the invention, the cutting pieces are arranged at equal or unequal distances on the cutting edge.

  According to one embodiment of the present invention, at least one rib protruding in a direction opposite to a direction in which the curved surface of the blade piece protrudes is formed in the blade edge portion.

  According to an embodiment of the present invention, at least one rib is provided on the cutting edge that does not have a claw.

  According to one embodiment of the present invention, the periphery of the blade is formed in a sawtooth shape by integral molding.

  According to one embodiment of the present invention, a polygonal hole is formed at the center of the blade.

  According to one embodiment of the present invention, the blade is integrally formed by punching a thin metal plate.

  According to an embodiment of the present invention, the blade module is integrally formed by a die casting method.

The invention of claim 1 comprises a periphery and a corrugated cutting edge portion, wherein the cutting edge portion has two cutting edge pieces provided with a first curved surface and two cutting edge pieces provided with a second curved surface alternate in the circumferential direction. And a circular corrugated blade of a shredder characterized in that hook-shaped claws are formed around a blade tip piece having a first curved surface.
According to a second aspect of the present invention, there is provided the shredder of the first aspect, wherein the corrugated cutting edge portion of the circular corrugated blade cuts the paper vertically to form a paper strip, and the claw cuts the paper strip horizontally to form a double-sided paper. A shredder circular corrugated blade characterized by being used to form conical paper strips.
According to a third aspect of the present invention, in the shredder according to the first aspect, the edge piece having the first curved surface and the edge piece having the second curved surface are arranged at equal or unequal distances in the edge portion. This is a shredder circular wave blade.
According to a fourth aspect of the present invention, there is provided the shredder according to the first aspect, wherein at least one rib protruding in a direction opposite to a direction in which the curved surface of the cutting edge protrudes is provided on the cutting edge portion. And a circular corrugated blade.
According to a fifth aspect of the present invention, there is provided a shredder circular wavy blade according to the fourth aspect, wherein at least one rib is formed on an edge piece having no claw.
According to a sixth aspect of the present invention, there is provided a shredder circular corrugated blade according to the first aspect, wherein the periphery is formed in a sawtooth shape by integral molding.
According to a seventh aspect of the present invention, there is provided a shredder circular wave blade, wherein a polygonal hole is formed at the center of the circular wave blade.
According to a further aspect of the present invention, there is provided a shredder circular corrugated blade, wherein the circular corrugated blade is formed by punching a thin metal plate.
The invention of claim 9 is a shredder circular corrugated blade module, wherein the circular corrugated blade module comprises two circular corrugated blades, each circular corrugated blade comprising:
A peripheral portion and a corrugated edge portion are provided, and the edge portion includes two edge portions having a first curved surface and two edge portions having a second curved surface alternately arranged in a circumferential direction. A circular corrugated blade of a shredder, wherein a hook-shaped claw is formed around a blade edge having a curved surface, and circular corrugated blades are arranged in a manner corresponding to each other. It is a module.
According to a tenth aspect of the present invention, in the circular corrugated blade module of the shredder according to the ninth aspect, the corrugated blade portion of the circular corrugated blade cuts the paper vertically to form a paper strip, and the claw cuts the paper strip horizontally. To form a bipyramidal paper strip.
The invention according to claim 11 is characterized in that, in the circular corrugated blade module of the shredder according to claim 9, the cutting edge having the first curved surface and the cutting edge having the second curved surface are arranged at equal distances in the cutting edge portion. And a circular wave blade module of a shredder.
According to a twelfth aspect of the present invention, in the shredder circular corrugated blade module according to the ninth aspect, at least one rib protruding in a direction opposite to a direction in which the curved surface protrudes is provided on each cutting edge piece. It is a shredder circular corrugated blade module.
14. The circular corrugated blade of a shredder according to claim 12, wherein at least one rib is formed on the blade piece without a hook-shaped claw. It is a module.
According to a fourth aspect of the present invention, there is provided the shredder circular corrugated blade module according to the ninth aspect, wherein the edge pieces having claws are arranged in such a manner as to be in contact with each other. .
According to a fifteenth aspect of the present invention, there is provided the shredder circular corrugated blade module according to the ninth aspect, wherein the periphery is formed in a sawtooth shape by integral molding.
According to a further aspect of the present invention, there is provided the shredder circular corrugated blade module according to claim 9, wherein two circular corrugated blades of the circular corrugated blade module each have a polygonal hole formed at the center thereof. It is a corrugated blade module.
The invention of claim 17 provides a shredder circular corrugated blade module according to claim 9, wherein the circular corrugated blade module is integrally formed by die casting.

  The present invention provides a circular blade formed by punch-pressing a thin metal plate or a circular blade module formed by a die casting method, and the circular blade has a periphery and a corrugated edge portion, and the edge portion is a The two blades having one curved surface and the two blades having the second curved surface are alternately arranged in the circumferential direction, and the periphery of the circular blade is formed into a sawtooth shape by integral molding, and is vertically oriented. Used to cut paper. A claw is formed around the blade piece having the first curved surface, and the claw cuts the cut paper strip laterally to form a bipyramid paper piece. The structure of the present invention is novel and reduces production material costs and motor load, reduces power consumption, greatly enhances the shredder's competitiveness in the market, and has practicality.

  Please refer to FIG. 3 to FIG. 3 and 4 are a perspective view and a front view of the circular corrugated blade of the present invention, and FIGS. 5 and 6 are a bottom view and a side view of the circular corrugated blade of the present invention.

  The circular wave blade 1 of the shredder of the present invention is formed by using a thinnest metal plate of 0.3 mm as a material by a punch press in accordance with the maximum number of sheets (sheet capacity) that the shredder can accommodate at one time, and A corrugated cutting edge portion 12 comprising two cutting pieces B having a first curved face and two cutting pieces B 'having a second curved face is formed, of which a cutting piece B having a first curved face and a second curved face are provided. The cutting edge pieces B 'are alternately arranged, and are preferably arranged at equal distances in the corrugated cutting edge portion 12, but are not limited to equidistant arrangements. As shown in FIG. 3, the periphery 11 of the circular corrugated blade is formed into a continuous sawtooth shape by integral molding. The sawtooth periphery 11 has a function of pulling the paper to be cut downward, and cuts the paper vertically. To be served.

  As shown in FIGS. 5 and 6, a hook-shaped claw 13 is provided in the periphery 11 of the cutting edge piece B having the first curved surface, and is used to cut a paper strip that has been cut vertically in a horizontal direction. Thus, no hook-shaped claw is formed on the blade tip piece B 'having the second curved surface. A polygonal hole 16 is formed at the center of the circular corrugated blade 1 to be used for penetration and joining of the blade shaft.

  In this embodiment, a circular cutting edge portion 12 composed of a cutting edge piece B having a first curved surface and a cutting edge piece B 'having a second curved surface is formed by a punch press. Among them, the cutting edge pieces B having the first curved surface and the cutting edge pieces B 'having the second curved surface are alternately arranged, and the hook-shaped claws 13 are integrally formed around the cutting edge piece B having the first curved surface. The formed paper strip is used for cutting the paper strip which has already been cut in the vertical direction in the horizontal direction, and the claw is not formed on the blade piece B 'having the second curved surface.

  However, when it is necessary to employ a blade having a relatively large size due to an increase in the paper capacity, the two hook-shaped claws separated by about 180 degrees in the above-described embodiment cannot withstand the load. Three pawls are provided at 120-degree intervals, or four pawls are provided at 90-degree intervals, and four, eight, or even four blade tips of the embodiment of FIGS. Provide many.

  Illustrated in FIGS. 10 to 13 is a circular corrugated blade 100 with six cutting pieces. The circular corrugated blade 100 is formed into a circular shape by a punch press, and has a cutting edge portion 112 composed of three cutting edges B having a first curved surface and three cutting edges B 'having a second curved surface. The cutting edge pieces B having the first curved surface and the cutting edge pieces B 'having the second curved surface are alternately arranged (FIG. 13). A hook-like claw 113 is formed integrally with the periphery 111 of the blade tip piece B having the first curved surface, and is used to cut a paper strip that has been cut vertically in a horizontal direction. No claw is formed on the cutting edge piece B 'having the second curved surface. As shown in FIG. 10, the periphery 111 of the circular corrugated blade is formed into a continuous sawtooth shape by integral molding, and is used for cutting paper in a vertical direction.

  Shown in FIGS. 14-17 are circular corrugated blades 200 with eight cutting edges. The circular corrugated blade 200 is formed into a circular shape by a punch press, and has a cutting edge portion 212 including four cutting edges B having a first curved surface and four cutting edges B 'having a second curved surface. Among them, the cutting edge pieces B having the first curved surface and the cutting edge pieces B 'having the second curved surface are alternately arranged (only the cutting edge piece B is slightly shown in FIGS. 16 and 17). A hook-like claw 213 is formed integrally with the periphery 211 of the cutting edge piece B having the first curved surface, and is used for cutting a paper strip that has already been cut vertically, in a horizontal direction. No claw is formed on the cutting edge piece B 'having the second curved surface. As shown in FIG. 14, the periphery 211 of the circular corrugated blade is formed into a continuous sawtooth shape by integral molding, and is used for cutting paper in a vertical direction. In the embodiment of FIG. 3, only two cutting blades having claws are provided, and since the interval between the claws is large, when the cutting edge portion 12 is formed, the cutting surface is opposite to the curved surface of the cutting blade B or B ′. A plurality of ribs 50 projecting in the direction are formed to enhance the bending strength of the circular corrugated blade 1. As shown in FIG. 3, the ribs 50 are formed on the cutting edge pieces B ′ of the circular corrugated blade 1 on which the claws are not formed. However, the ribs 50 may be formed on the cutting edge pieces B on which the claws are formed.

  As shown in the combined perspective view of FIG. 7, the first and second rotating blade shafts S and S ′ are sequentially passed through a circular wave blade 1 standardized by punch-pressing the above thin metal plate. The most important cutting device of the shredder is formed. At the time of assembly, the claws 13 of the two mutually corresponding circular corrugated blades 1 are at the same corresponding positions, and the claws 13 of the circular corrugated blade 1 on the first rotating blade axis S are circularly arranged on the second rotating blade axis S ′. The claws 13 of the corrugated blade 1 are arranged alternately. As shown in FIG. 9, the circular corrugated blades on the first rotating blade axis S are merged in such a way that the blade pieces B with the claws 13 are opposed to form a first blade set, and the second rotating blade axis S The 'upper circular corrugated blades' are merged in a face-to-face manner with the blade pieces B' without claws 13 to form a second blade set.

  The first blade set formed by merging the first rotating blade axis S and the second blade set formed by merging the second rotating blade axis S ′ are, in practice, integrally formed by die casting. It is possible, and simply stated, that the blade modules 60, 70 shown in FIG. 18 are die-cast using different molds instead of the first and second blade sets formed in the merged manner described above. Can be formed. The production cost and processing cost in the case of forming by die casting are relatively high and are not necessarily economically advantageous. However, for a shredder requiring heavy duty, it is practically realized. It is possible. In the embodiment of FIGS. 7 and 9, the first blade 21 and the second blade 22 on the first rotating blade axis S are merged in such a manner that the cutting edge pieces B having the claws 13 face each other to form a first blade set. Has formed. The cutting edge portions of the blades 21 and 22 are formed by alternately arranging two cutting edge pieces having a first curved surface and two cutting edge pieces having a second curved surface, thereby forming the first blade 21 and the second blade 22. The pair of blades B having claws are merged and brought into contact with each other, but the blades B ′ of the first blade 21 and the second blade 22 that do not have claws are separated and the open space 23 is formed. Has formed. Conversely, the first blade 31 and the second blade 32 on the second rotating blade axis S ′ are merged in such a manner that the blade pieces B ′ without claws face each other to form a second blade set. The 32 cutting edge portions are formed by alternately arranging two cutting edge pieces having a first curved surface and two cutting edge pieces having a second curved surface. As a result, a pair of blade pieces B having claws of the first blade 31 and the second blade are separated from each other to form an open space 33, and another second blade set adjacent to one of the blades 32 is formed. The claws of another one of the blades 31 'are merged to show a contact state. According to the above arrangement, when the two rotating blades S and S ′ rotate in opposite directions, the claws after the first blade 21 and the second blade 22 on the first rotating blade axis S are combined with the second rotating blade axis. It can be inserted into the open space 33 of the first blade 31 and the second blade 32 on S ′. When two corresponding claws merge and come into contact, the already cut paper strip can be cut sideways.

  FIG. 7 is an operation diagram of the present invention, and FIG. 9 is a plan view. The standardized circular corrugated blade has two blades with a first curved surface and two blades with a second curved surface alternately arranged to form a curved surface change. At any time, the cutting edge maintains a constant bonding relationship. That is, when viewed from the end surface projection direction, the amount of overlap between the blades on the different rotating blade axes of the apparatus and the blades is always fixed, so that the two rotating blade axes rotate in opposite directions, so that the cutting edge The relative movement between the part and the cutting edge produces a cutting effect like scissors (see FIG. 9). When the claw 13 located around the cutting edge B of the corresponding blade set of one of the rotating blade shafts rotates to reach the merged position, the claw 13 becomes the cutting edge of the cutting edge B 'on the other rotating blade shaft. In combination with the part 12, the paper is cut.

  Along the curved surface change of the circular corrugated blade of the present invention, the paper is cut into a bipyramid paper piece which expands toward the middle from both ends, and both ends of the paper are in the horizontal cutting position, so that the thinner the cross section, the more the horizontal cutting The required motor output power is reduced. In other words, the motor achieves the power required for transverse cutting with the lightest load and the load on the motor is reduced, thereby reducing power consumption and extending the service life of the motor.

  In addition, the traditional blade is made by punch-pressing a metal plate with a thickness of about 2 mm, and the circular corrugated blade of the present invention is made by punch-pressing the thinnest metal plate with a thickness of 0.3 mm. The difference in material costs is very large and the weight of the blades produced is reduced, which also allows the motor to achieve the power required to cut the paper with the lightest load, and reduces the service life of the motor by reducing the motor load And power consumption can be reduced. The manufacturing method of the die-casting circular corrugated blade module in the present invention is more convenient, and many features can obviously reduce the production cost and greatly increase the shredder's market competitiveness. .

1 is a perspective view of a combination of blades of a traditional shredder. FIG. 4 is an operation diagram of a traditional shredder blade. FIG. 3 is a perspective view of the circular corrugated blade of the present invention. FIG. 4 is a front view of the circular corrugated blade of the present invention. FIG. 4 is a bottom view of the circular corrugated blade of the present invention. FIG. 4 is a side view of the circular corrugated blade of the present invention. FIG. 4 is a perspective view of the circular corrugated blade set of the present invention assembled to a rotating blade shaft. FIG. 4 is an operation diagram when the circular corrugated blade set of the present invention cuts paper. FIG. 3 is a plan view of a plurality of blade sets of the present invention assembled to a rotating blade shaft. FIG. 3 is a perspective view of another embodiment of the circular corrugated blade of the present invention, the circular corrugated blade having three claws. FIG. 11 is a front view of the circular corrugated blade of FIG. 10. FIG. 12 is a sectional view taken along line 12-12 of FIG. 11. FIG. 13 is a sectional view taken along line 13-13 of FIG. 11. FIG. 4 is a perspective view of yet another embodiment of the circular corrugated blade of the present invention, the circular corrugated blade having four claws. FIG. 15 is a front view of the circular corrugated blade of FIG. 14. FIG. 16 is a sectional view taken along line 16-16 of FIG. 15. FIG. 17 is a sectional view taken along line 17-17 of FIG. 15. FIG. 4 is a schematic view of another embodiment of the present invention, in which each circular corrugated blade module is integrally formed by die casting.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Circular corrugated blade B, B 'Blade edge piece 11 Perimeter 12 Blade edge portion 13 Claw 16 Polygonal hole 100 Circular corrugated blade 111 Peripheral 112 Blade edge portion 113 Claw 200 Circular corrugated blade 211 Peripheral 212 Blade edge portion 213 Claw 50 Rib S, S' rotation Blade shaft 60, 70 Blade module 21, 22 Blade 23 Open space 31, 32 Blade 33 Open space 31 'Blade

Claims (17)

  A peripheral portion and a corrugated edge portion are provided, and the edge portion includes two edge portions having a first curved surface and two edge portions having a second curved surface alternately arranged in a circumferential direction. A circular corrugated blade of a shredder, wherein a hook-like claw is formed around a cutting edge piece having a curved surface.   2. The circular corrugated blade of claim 1, wherein the corrugated cutting edge of the circular corrugated blade cuts the paper lengthwise to form a paper strip, and the pawl cuts the paper strip horizontally to form a bipyramid paper strip. A shredder circular corrugated blade, characterized in that the blade is provided for:   The circular wave blade of the shredder according to claim 1, wherein the cutting edge having the first curved surface and the cutting edge having the second curved surface are arranged at an equal distance or an unequal distance in the cutting edge portion, Shredder circular corrugated blade.   The circular wave blade of a shredder according to claim 1, wherein at least one rib protruding in a direction opposite to a direction in which a curved surface of the blade piece protrudes is provided on the blade edge portion.   The circular corrugated blade of a shredder according to claim 4, wherein at least one rib is formed on a cutting edge that does not have a claw.   2. The circular corrugated blade of a shredder according to claim 1, wherein the periphery is formed in a sawtooth shape by integral molding.   The circular corrugated blade of a shredder according to claim 1, wherein a polygonal hole is formed at the center of the circular corrugated blade.   The circular corrugated blade of a shredder according to claim 1, wherein the circular corrugated blade is formed by punching a thin metal plate. In a shredder circular corrugated blade module, the circular corrugated blade module comprises two circular corrugated blades, each circular corrugated blade comprising:
A peripheral portion and a corrugated edge portion are provided, and the edge portion includes two edge portions having a first curved surface and two edge portions having a second curved surface alternately arranged in a circumferential direction. A circular corrugated blade of a shredder, wherein a hook-shaped claw is formed around a blade edge having a curved surface, and circular corrugated blades are arranged in a manner corresponding to each other. module.   The circular corrugated blade module of the shredder according to claim 9, wherein the corrugated blade portion of the circular corrugated blade cuts the paper vertically to form a paper strip, and the claw cuts the paper strip horizontally to form a bipyramidal paper piece. A shredder circular corrugated blade module, characterized in that it is provided for forming.   10. The circular corrugated blade module of a shredder according to claim 9, wherein the blade piece having the first curved surface and the blade piece having the second curved surface are arranged at equal distances in the blade portion. Blade module.   The circular corrugated blade module of a shredder according to claim 9, wherein at least one rib protruding in a direction opposite to the direction of the curved surface is provided on each cutting edge piece.   13. The circular corrugated blade module of a shredder according to claim 12, wherein at least one rib is formed on a blade piece having no hook-shaped claw.   The circular corrugated blade module of a shredder according to claim 9, wherein the edge pieces having claws are arranged in a merged and contacting manner.   The circular corrugated blade module of a shredder according to claim 9, wherein the periphery is formed in a sawtooth shape by integral molding.   The circular corrugated blade module of a shredder according to claim 9, wherein a polygonal hole is formed at the center of each of the two circular corrugated blades of the circular corrugated blade module. The circular corrugated blade module of a shredder according to claim 9, wherein the circular corrugated blade module is integrally formed by die casting.

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