Blade mechanism of shredding machine

Abstract

The utility model provides a shredder blade mechanism which comprises a cutter holder, a blade assembly and a mounting part for mounting the blade assembly on the cutter holder, the blade assembly comprises an annular main body, a plurality of blades arranged on the periphery of the annular main body and a plurality of pin columns arranged on the inner side of the annular main body along the axial direction, the tool apron is located on the inner side of the blade assembly, the outer side of the tool apron is provided with an open groove buckled with the pin column in a matched mode, and the open groove is in taper fit with the pin column; the installation part comprises an annular installation plate and a plurality of screws, the annular installation plate is located on one side of the pin columns, and the screws penetrate through the annular installation plate and are in threaded connection with the pin columns one by one. By means of the arrangement, installation is firm, the blade assembly is convenient to replace, in addition, force borne by the screws in the cutting direction can be reduced, and the screws are prevented from being broken in the using process.

Description

Technical Field

[0001] The utility model relates to the field of shredders, in particular to a blade mechanism of a shredder. Background Art

[0002] Shredders are widely used, such as processing unprocessed raw materials or scraps in production, and processing solid waste in the field of environmental recycling. Shredders can not only improve the utilization rate of resources, but also play an important role in environmental protection and cost savings.

[0003] The blades of shredders currently on the market are usually fixed in the following two ways: first, welding fixing, which connects the blade to the main shaft by welding. Therefore, when the blade is worn, the blade needs to be replaced together with the main shaft, resulting in excessively high cost of use; second, screw locking fixing, which directly locks the blade on the blade holder with screws. During use, the screws are subjected to greater force and are easy to break, so the failure rate is high, affecting work efficiency.

[0004] Therefore, it is necessary to design a shredder blade mechanism to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a shredder blade mechanism which is firmly fixed and convenient to replace.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a shredder blade mechanism, which includes a knife seat, a blade assembly and a mounting piece for mounting the blade assembly on the knife seat, the blade assembly includes an annular body, a plurality of blades arranged on the outer periphery of the annular body and a plurality of pins arranged axially on the inner side of the annular body, the knife seat is located on the inner side of the blade assembly, the outer side of the knife seat is provided with a groove that is matched with the pin, and the groove is matched with the taper of the pin; the mounting piece includes an annular mounting plate and a plurality of screws, the annular mounting plate is located on one side of the pin, and the screws pass through the annular mounting plate and are threadedly connected to the pin one by one.

[0007] As a further improved technical solution of the present invention, the blade assembly includes a plurality of sub-blade assemblies, each of which includes an arc-shaped body, a plurality of blades arranged on the outer side of the arc-shaped body, and a plurality of pins arranged axially on the inner side of the arc-shaped body, and the arc-shaped bodies of the plurality of sub-blade assemblies constitute the annular body.

[0008] As a further improved technical solution of the utility model, the annular mounting plate includes a plurality of arc-shaped sub-mounting plates, each of which at least spans over two adjacent sub-blade assemblies to fix the two adjacent sub-blade assemblies.

[0009] As a further improved technical solution of the utility model, the blade assembly includes five sub-blade assemblies of the same size, and the annular mounting plate includes five arc-shaped sub-mounting plates of the same size.

[0010] As a further improved technical solution of the utility model, the taper of the pin is 0.1-0.5.

[0011] As a further improved technical solution of the utility model, the plurality of blades are evenly distributed in the circumferential direction of the annular body, and the blades are radially arranged with the center of the annular body as the center.

[0012] As a further improved technical solution of the utility model, the blade has a first side surface and a second side surface opposite to each other on the left and right, a third side surface and a fourth side surface opposite to each other on the front and back, and a cutting end face, and the third side surface and the fourth side surface are both bent backwards.

[0013] As a further improved technical solution of the utility model, the cutting end face is trapezoidal.

[0014] As a further improved technical solution of the utility model, the blade is made of heat-treated tool steel, and the hardness of the blade is 60-63HRC.

[0015] As a further improved technical solution of the utility model, a regular polygonal center hole is opened in the middle of the knife seat.

[0016] It can be seen from the above technical solutions that the shredder blade mechanism of the utility model is configured with a taper fit between the knife seat and the blade assembly, and is further fastened in the axial direction by screws. This not only ensures a firm installation, but also facilitates the replacement of the blade assembly. In addition, it can also reduce the force received by the screw in the cutting direction, thereby preventing the screw from breaking during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a side view of a shredder blade mechanism according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A side view of the other side of the shredder blade mechanism.

[0019] Figure 3 for Figure 1 A perspective view of the neutron blade assembly.

[0020] Figure 4 for Figure 3 A perspective view of the middle blade assembly.

[0021] Figure 5 for Figure 1 Side view of the middle knife block.

[0022] Figure 6 for Figure 1 Schematic diagram of the fixation of the knife holder and the blade assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please refer to Figure 1 and Figure 2 As shown, the utility model provides a shredder blade mechanism, which is used to be installed on the output shaft of the shredder power system to perform cutting work. The shredder blade mechanism includes a knife seat 20, a blade assembly 10, and a mounting member 30 for mounting the blade assembly 10 on the knife seat 20. The knife seat 20 is located on the inner side of the blade assembly 10 to fix the entire mechanism on the output shaft.

[0025] The blade assembly 10 includes an annular body 11, a plurality of blades 12 disposed on the outer periphery of the annular body 11, and a plurality of pins 13 disposed along the axial direction on the inner side of the annular body 11. Figure 3 As shown, in this embodiment, the blade assembly 10 includes a plurality of sub-blade assemblies, each of which includes an arc-shaped body 101, a plurality of blades 12 disposed on the outer side of the arc-shaped body 101, and a plurality of pins 13 disposed axially on the inner side of the arc-shaped body 101, and the arc-shaped bodies 101 of the plurality of sub-blade assemblies form an annular body 11. The blade assembly 10 preferably includes five sub-blade assemblies of the same size. Such an arrangement is convenient for installation on the one hand. If a blade somewhere in the blade assembly 10 is damaged, it is only necessary to replace the sub-blade assembly where the damaged blade is located separately, without replacing the blade assembly as a whole, which is convenient for maintenance and replacement, and reduces the cost of use.

[0026] The plurality of blades 12 are evenly distributed in the circumferential direction of the annular body 11, and the blades 12 are arranged radially with the center of the annular body 11 as the center. The rotation direction of the blade assembly 10 during cutting is defined as forward, Figure 3 As shown, the blade 12 has a first side surface 121, a second side surface 122, a third side surface 123, a fourth side surface 124 and a cutting end surface 125, and the third side surface 123 and the fourth side surface 124 are both bent backward. The cutting end surface 125 is a trapezoid, with its short side located at the rear and the long side located at the front. The blade 12 is made of heat-treated tool steel, such as DC53 material, and the Rockwell hardness of the blade 12 can reach 60-63HRC.

[0027] A plurality of pins 13 are evenly distributed on the inner ring side of the annular body 11. Figure 2 and Figure 4As shown, the outer side of the knife seat 20 is provided with a slot 22 that is engaged with the pin 13, and the slot 22 is tapered with the pin 13, and the taper of the pin 13 is 0.1-0.5. A regular polygonal center hole 21 is opened in the middle of the knife seat 20 for fixing the knife seat 20 to the output shaft of the power system of the shredder, and preferably, the regular polygon is an octagon.

[0028] Please refer to Figure 1 and Figure 6 As shown, the mounting member 30 includes an annular mounting plate 32 and a plurality of screws 31. The annular mounting plate 32 is located on one side of the pin 13, and the screws 32 pass through the annular mounting plate 32 and are threadedly connected to the pin 13 one by one. The annular mounting plate 32 includes a plurality of arc-shaped sub-mounting plates, each of which at least spans over two adjacent sub-blade assemblies to fix the two adjacent sub-blade assemblies. In this embodiment, the number of arc-shaped sub-mounting plates corresponds to the number of sub-blade assemblies, preferably five, and in this arrangement, during installation, the sub-mounting plates and the sub-blade assemblies are installed in a staggered manner in sequence, so that each sub-mounting plate spans over two adjacent sub-blade assemblies to fix the two adjacent sub-blade assemblies.

[0029] Terms such as "left", "right", "front", "rear" and the like used herein to indicate spatial relative positions are used for the purpose of convenience to describe the relationship of one feature relative to another feature as shown in the drawings. It is understood that, depending on the placement of the product, the terms of spatial relative positions may be intended to include different orientations in addition to the orientation shown in the drawings, and should not be construed as limiting the claims.

[0030] In addition, the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A shredder blade mechanism, characterized in that: It includes a knife seat, a blade assembly and a mounting piece for mounting the blade assembly on the knife seat, the blade assembly includes an annular body, a plurality of blades arranged on the outer periphery of the annular body and a plurality of pins arranged axially on the inner side of the annular body, the knife seat is located on the inner side of the blade assembly, the outer side of the knife seat is provided with a groove that cooperates with the pin, and the groove cooperates with the taper of the pin; the mounting piece includes an annular mounting plate and a plurality of screws, the annular mounting plate is located on one side of the pin, the screws pass through the annular mounting plate and are threadedly connected to the pins one by one.

2. The shredder blade mechanism according to claim 1, characterized in that: The blade assembly includes a plurality of sub-blade assemblies, each of which includes an arc-shaped body, a plurality of blades arranged on the outer side of the arc-shaped body, and a plurality of pins arranged axially on the inner side of the arc-shaped body. The arc-shaped bodies of the plurality of sub-blade assemblies form the annular body.

3. The shredder blade mechanism according to claim 2, characterized in that: The annular mounting plate includes a plurality of arc-shaped sub-mounting plates, each of which at least spans over two adjacent sub-blade assemblies to fix the two adjacent sub-blade assemblies.

4. The shredder blade mechanism according to claim 3, characterized in that: The blade assembly includes five sub-blade assemblies of the same size, and the annular mounting plate includes five arc-shaped sub-mounting plates of the same size.

5. The shredder blade mechanism according to claim 1, characterized in that: The taper of the pin is 0.1-0.

5.

6. The shredder blade mechanism according to claim 1, characterized in that: The plurality of blades are evenly distributed in the circumferential direction of the annular body, and the blades are radially arranged with the center of the annular body as the center.

7. The shredder blade mechanism according to claim 1, characterized in that: The blade comprises a first side surface and a second side surface opposite to each other, a third side surface and a fourth side surface opposite to each other front and back, and a cutting end surface, wherein the third side surface and the fourth side surface are both bent backwards.

8. The shredder blade mechanism according to claim 7, characterized in that: The cutting end face is trapezoidal.

9. The shredder blade mechanism according to claim 1, characterized in that: The blade is made of heat-treated tool steel, and the hardness of the blade is 60-63HRC.

10. The shredder blade mechanism according to claim 1, characterized in that: A regular polygonal center hole is provided in the middle of the knife seat.

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