CN216229971U

CN216229971U - Cutter head assembly of chipping machine

Info

Publication number: CN216229971U
Application number: CN202121389653.5U
Authority: CN
Inventors: 杨少应; 王金山; 王翔; 陈妃奕; 王廷华; 洪恒侨; 陈思野
Original assignee: Leizhou Leibao Machinery Co ltd
Current assignee: Leizhou Leibao Machinery Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-04-08
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a cutter head assembly of a chipping machine, which comprises a cutter head, blades and blade pressing blocks, wherein the cutter head comprises a shaft mounting ring, an outer ring, a connecting shaft mounting ring and cutting supporting blocks of the outer ring, a plurality of cutting supporting blocks are uniformly distributed, each cutting supporting block is provided with a spiral top surface and a blade mounting side surface, the spiral top surfaces form a cutter head cutting surface, a nut mounting groove hole is formed in the spiral top surface, a blade mounting shaft hole is formed in the blade mounting side surface, the blade mounting shaft hole is communicated with the nut mounting groove hole, and the blades and the blade pressing blocks are fixed on the cutting supporting blocks through bolts and nuts. The utility model has low manufacturing cost, convenient assembly and long service life; the cutting surface of the cutter head is composed of a plurality of identical spiral top surfaces, the spiral surfaces are matched with the blades to stably bite materials in the cutting process of the applied chipper, so that cut materials can be prevented from bouncing, the end surfaces of the materials are ensured to be in contact with the spiral top surfaces, the sizes and the thickness of the cut sheets are uniform, and the chipping rate is low.

Description

Cutter head assembly of chipping machine

Technical Field

The utility model relates to the technical field of chipping machines, in particular to a cutter head assembly of a disc chipper.

Background

The chipping machine belongs to one of wood processing series equipment, and is widely applied to material preparation workshop sections in production processes of textile, papermaking, pulping, artificial boards and other industries. The main cutting raw materials of the machine are peeled small-diameter wood, bamboo, veneer lumber, cutting secondary firewood remainder and the like. The disc chipper mainly comprises a base, a feed hopper, a cutter head device, a motor driving device and the like, branches, veneers, logs and the like are taken as cutting raw materials and are fed from a feed inlet, when the logs contact with a cutting blade, the logs are cut along with the high-speed rotation of the cutting cutter head, and the cut wood chips fall downwards.

The fixing mode of the blades in the cutter head of the existing chipping machine is as follows: after the upper and lower pressing cutter blocks are used for clamping, bolts penetrate through blades of the pressing cutter blocks and are screwed into the back of the cutter head for fixing, the replacement is complex, the cutter changing time is long each time, and the working efficiency is low. And the nuts are all exposed out of the back of the cutter head, a stirring cutter is formed in the rotation process of the cutter head, and the cut wood chips are stirred and crushed to form sawdust, so that the sawdust rate is high, the size and the quality of the chips cannot be controlled, and the economic benefit is influenced.

Disclosure of Invention

The utility model aims to provide a cutter head assembly of a chipping machine, which is convenient to assemble, low in sawdust rate and long in service life.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a blade disc subassembly of chipping machine, includes blade disc, blade and blade briquetting, its characterized in that: the cutter head comprises an axle mounting ring, an outer ring and cutting supporting blocks, the axle mounting ring and the outer ring are fixedly connected through a plurality of cutting supporting blocks, the plurality of cutting supporting blocks are uniformly distributed, each cutting supporting block is provided with a spiral top surface and a blade mounting side surface, the spiral top surfaces form a cutter head cutting surface, a nut mounting groove hole is formed in the spiral top surface, a blade mounting shaft hole is formed in the blade mounting side surface and is communicated with the nut mounting groove hole, and the blades and the blade pressing blocks are fixed on the cutting supporting blocks through bolts and nuts after being stacked.

Further, the front-back height difference of the spiral top surface is 5-15 mm. Further, the included angle between the blade mounting side face and the horizontal plane is 36-44 degrees; the included angle between the side surface and the bottom surface of the blade pressing block is 140-160 degrees.

Furthermore, the size of the top surface of the nut is matched with that of the nut mounting groove hole, the top surface of the nut is flush with the top surface of the screw, one side surface of the nut is perpendicular to the blade mounting shaft hole, and the side surface of the nut is provided with a threaded hole.

Further, the blade comprises a blade body, and a mounting adjusting groove is formed in the blade body.

The utility model has the beneficial effects that: by adopting the structure, the whole manufacturing cost is low, the blades are independently disassembled and assembled through the matching of the bolts and the nuts, the assembly is convenient, the cutter head is not directly tapped to form a fixed threaded hole, the problem that the cutter head is integrally damaged due to the fact that the threaded hole is abraded and the thread is slippery is avoided, and the service life of the cutter head is prolonged. The cutter head cutting surface is composed of a plurality of identical spiral top surfaces, and when a chipper applying the cutter head assembly cuts wood, the spiral top surfaces are matched with the blades to stably bite the wood, so that the cut raw materials can be ensured not to bounce. Chipping is carried out at different feed hopper positions, and the contact of the end face of the raw material and the top face of the spiral can be ensured. Therefore, the cut sheets have uniform size and low fragment rate.

In addition, the nut is hidden in the nut mounting slotted hole of the cutter head, so that collision with the wood chip is avoided in the chipping process, and the generation of sawdust and fragments is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the state of fig. 1 in another direction.

Fig. 3 is an exploded view of fig. 1.

Fig. 4 is a schematic front view of the present invention.

Fig. 5 is a sectional view taken along the line a-a in fig. 4.

Fig. 6 is a schematic view of the cutter blades of the present invention fixedly mounted on the cutter head.

Fig. 7 is a schematic structural diagram of a cutter head in the utility model.

Fig. 8 is a schematic view of the cutterhead of the present invention in partial cutaway.

Fig. 9 is a schematic structural view of the nut of the present invention.

Fig. 10 is a schematic view of the structure of the blade of the present invention.

Fig. 11 is a schematic structural view of a blade compact according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-3, the cutter head assembly of the chipping machine of the present invention includes a nut 1, a cutter head 2, a blade 3, a blade pressing block 4, and a fixing bolt 5.

As shown in fig. 4-8, the cutter head 2 includes a shaft mounting ring 21, an outer ring 22, and a cutting support block 23. The shaft mounting ring 21 and the outer ring 22 are fixedly connected through 6 identical cutting supporting blocks 23, and the 6 cutting supporting blocks 23 are uniformly distributed. Specifically, in this embodiment, the shaft mounting ring 21, the outer ring 22 and the cutting support block 23 may be integrally formed by casting, and the entire cutter head is an integral unit. Of course, the shaft mounting ring 21, the outer ring 22 and the cutting support block 23 may be a plurality of discrete parts, and are fixedly connected into a whole by welding.

Each cutting support block 23 is provided with a spiral top surface 231 and a blade mounting side surface 232, 6 spiral top surfaces 231 form a cutter head cutting surface, the spiral top surface 231 is provided with a nut mounting groove hole 233, the blade mounting side surface 232 is provided with a blade mounting shaft hole 234, and the blade mounting shaft hole 234 is communicated with the nut mounting groove hole 233. The blade 3 and the blade pressing block 4 are laminated and fixed on the cutting supporting block 23 through the bolt 5 and the nut 1.

The height difference of the spiral top surface 231 from front to back is 5-15 mm. When wood raw materials contact the surface of the cutter head of the cutter, the wood can be stably bitten by the blades, wood can be quickly sucked and bitten, the effect of slicing the blades is not influenced by the jumping of the wood, the wood is stably sliced by the blades, and the sizes and the thicknesses of the wood chips are ensured to be the same. The sheet cutting speed is high during production, the efficiency is high, the sheet specification is unified, the occupation proportion of sawdust is small, and the quality is stable.

In addition, as shown in fig. 5 and 6, the position of one cutting support block opposite to the blade point of the other cutting support block 23 is an inclined surface, and the included angle A between the inclined surface and the blade mounting side surface of the opposite cutting support block is 30-42 degrees. The included angle B between the blade mounting side surface 232 and the horizontal plane is 36-44 degrees; the included angle C between the side surface and the bottom surface of the blade pressing block 4 is 140-160 degrees. In this way, the blade cutting force is optimized, and the cut sheet can be smoothly discharged along the side of the blade holder. No sawdust fragments were produced.

Preferably, as shown in fig. 9, the size of the top surface 11 of the nut 1 is adapted to the size of the nut mounting slot, and the top surface 11 of the nut is also a spiral surface, which is flush with the spiral top surface and just fills up the opening of the nut mounting slot. One of the side surfaces 12 of the nut 1 is perpendicular to the blade mounting shaft hole 234 and has a threaded hole 13 opened therein. Thus, after the nut 1 is placed in the nut mounting slot hole, the nut can be connected with the screw 5 passing through the blade mounting shaft hole 234, and the blade 3 and the blade pressing block 4 are stably connected to the corresponding cutting supporting block 23.

As shown in fig. 10 to 11, the blade 3 includes a blade body 31, and a mounting adjustment groove 32 is formed in the blade body 31. The blade pressing block 4 comprises a pressing block body 41, and a mounting hole 42 is formed in the pressing block body 41. During installation, the bolt 5 penetrates through the installation hole 42 and the installation adjusting groove 32 and then is matched and connected with the nut 1, and the blade is fixedly connected to the cutter head after being screwed down. In addition, the length of the blade can be conveniently adjusted by arranging the installation adjusting groove 32, and then the size of the wood chip is controlled.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a blade disc subassembly of chipping machine, includes blade disc, blade and blade briquetting, its characterized in that: the cutter head comprises an axle mounting ring, an outer ring and cutting supporting blocks, the axle mounting ring and the outer ring are fixedly connected through a plurality of cutting supporting blocks, the plurality of cutting supporting blocks are uniformly distributed, each cutting supporting block is provided with a spiral top surface and a blade mounting side surface, the spiral top surfaces form a cutter head cutting surface, a nut mounting groove hole is formed in the spiral top surface, a blade mounting shaft hole is formed in the blade mounting side surface and is communicated with the nut mounting groove hole, and the blades and the blade pressing blocks are fixed on the cutting supporting blocks through bolts and nuts after being stacked.

2. The chipper head assembly of claim 1, wherein: the height difference of the front and the back of the spiral top surface is 5-15 mm.

3. The chipper head assembly of claim 1, wherein: the included angle between the blade mounting side face and the horizontal plane is 36-44 degrees; the included angle between the side surface and the bottom surface of the blade pressing block is 140-160 degrees.

4. The chipper head assembly of claim 1, wherein: the size of the top surface of the nut is matched with that of the nut mounting slotted hole, the top surface of the nut is flush with the top surface of the screw, one side surface of the nut is perpendicular to the blade mounting shaft hole, and the side surface of the nut is provided with a threaded hole.

5. A cutter head assembly for a chipper as claimed in any one of claims 1 to 4, wherein: the blade comprises a blade body, and an installation adjusting groove is formed in the blade body.