CN219171183U - Blade and rotary knife roller of wood chipper - Google Patents

Abstract

The utility model relates to the technical field of wood chippers, in particular to a blade and a rotary knife roller of a wood chipper, which comprises a knife body and a knife tip, wherein the knife tip is arranged at the top of the knife body, and is an inclined knife tip or a combined inclined knife tip formed by connecting a left inclined knife tip and a right inclined knife tip; a plurality of horizontal tightening holes are formed in the cutter body; the inner side of the cutter body is also provided with a clamping groove; the blade is detachably connected with the rotary knife roller. The utility model can reduce the energy consumption of chipping machine, reduce failure rate, improve cutting efficiency and has good use effect.

Description

Blade and rotary knife roller of wood chipper

Technical Field

The utility model relates to the technical field of wood chippers, in particular to a blade and a rotary knife roller of a wood chipper.

Background

The wood chipper is mainly used for cutting wood such as radial wood, bamboo wood, board veneer, wood with wood remaining after cutting, and the working principle is as follows: when the wood is contacted with the cutting blade, the high-speed rotating knife roller cuts the wood into small wood chips with uniform size, the small wood chips smaller than a certain size are sent out through the screen, and the larger wood chips are rotated once again to be cut again and then sent out through the screen. The wood chipper is mainly applied to a material preparation section in the production process of industries such as wood chipper, papermaking, pulping and the like. The blade of the traditional wood chipper is generally a long-strip horizontal knife tip structure, such as a drum chipper for wood processing, as disclosed in patent number CN202011121194.2, the blade is a traditional long-strip horizontal knife tip structure, the top of the traditional horizontal knife tip structure is a horizontal knife tip, and the lower part of the traditional horizontal knife tip structure is tightly mounted on a knife roll by a plurality of screw holes through bolts; the blade with the structure has simple preparation process, but the following technical problems occur in actual use: 1. the blade is of a strip horizontal blade tip structure, so that a wide cutting surface is formed when the wood is just contacted with the blade in the cutting process, the blade can be subjected to great cutting resistance through stress analysis, and a power system of the chipper is required to provide high-power energy consumption, so that the blade is one of the reasons of high mechanical energy consumption; 2. the wood has an excessively wide cutting surface when in contact with the blade, and sometimes the blade is damaged due to too great local stress on the blade.

Disclosure of Invention

The utility model aims at the technical problems and provides the blade for the wood chipper, which is smoother in cutting and good in using effect.

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

the blade of the wood chipper comprises a blade body and a blade tip, wherein the blade tip is arranged at the top of the blade body, and the blade tip is an inclined blade tip or a combined inclined blade tip formed by connecting a left inclined blade tip and a right inclined blade tip.

Optionally, a plurality of horizontal tightening holes are formed in the cutter body.

Optionally, a clamping groove is further formed in the inner side of the cutter body.

Optionally, a plurality of clamping holes are vertically arranged at the lower part of the cutter body.

The rotary knife stick using the blade comprises a rotary roller body, wherein a plurality of stepped grooves are formed in the rotary roller body, and the blade is detachably fixed to the stepped grooves.

Optionally, a fixing hole is arranged on the vertical surface of the step groove corresponding to the horizontal tightening hole. Optionally, a clamping projection is disposed on the vertical surface of the step groove corresponding to the clamping groove, and a fixing hole is disposed on the clamping projection corresponding to the horizontal tightening hole.

Optionally, a clamping rod is disposed on the horizontal plane of the step groove corresponding to the clamping hole.

Optionally, the rotating roller body is further provided with an inclined concave surface, and the inclined concave surface is correspondingly arranged on the upper portion of the stepped groove.

Optionally, the lowest part of the tool tip is not lower than the top end of the vertical surface of the step groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the blade of the wood chipper, the inclined knife tip structure is adopted, the width of the cutting face of the wood can be kept small when the wood is just contacted with the blade, and then the width of the cutting face can be gradually and uniformly increased along with the rotation of the knife roller, so that the smoothness of cutting can be improved, the instant resistance generated in the cutting process is reduced, the energy consumption is reduced, the chipper can select a smaller-power engine, and the use effect is good.

2. Adopt the combination slope knife tip can divide into a plurality of sections cutting with a timber cutting process, and every section wood chip cutting's maximum width is L, compares traditional horizontal broad face knife tip, and the cutting is laborsaving more and be difficult for causing the blade damage fracture, simultaneously, and cutting maximum width is controllable, can prevent effectively that the piece of wood that cuts out from because can't sieve and repeated the round of cutting once more from leading to the feed end to appear blockking up scheduling problem, can reduce the fault rate of complete machine operation, simultaneously, the screen cloth is also difficult to be damaged in the long-term use.

3. Aiming at the combined inclined knife tip, because the knife tip is designed to be inclined leftwards and rightwards, the knife tip can receive larger axial cutting reaction force when being installed on a rotary roller body for operation, and in order to improve the assembly stability of a right inclined knife tip single body and a left inclined knife tip single body, the utility model adopts a combined connection mode of a clamping convex block and a clamping rod, and realizes effective limit on the radial direction and the left and right axial directions of the knife body through the clamping rod and the clamping convex block, thereby being capable of ensuring the running problem of the knife body in long-term operation; meanwhile, the blade belongs to a consumable product and needs to be replaced frequently, and the material consumption of the blade body can be reduced by arranging the clamping grooves in the connection mode of the clamping convex blocks, so that the preparation cost is reduced under the condition of keeping the connection rigidity of the blade body, and the later maintenance cost of equipment is reduced; and the clamping convex blocks are blocky, so that strong cutting reaction force is timely received in the use process of the cutter body, the deformation of the connecting structure is not easy to cause, the safety and the reliability of equipment operation are ensured, the problem that the disassembly and assembly are difficult due to the deformation of the connecting structure when the later-stage blade is replaced is also prevented, and the use effect is good.

Drawings

FIG. 1-A is a front view of a prior art blade;

FIG. 1 is a block diagram of a first embodiment of a rotary roll body according to the present utility model;

FIG. 2 is a block diagram of a second embodiment of a rotating roll body according to the present utility model;

FIG. 3 is a block diagram of a third embodiment of a rotating roll body according to the present utility model;

FIG. 4 is a schematic view of the structure of the rotating roll body of the present utility model after being assembled with the blade of the present utility model;

FIG. 5 is a block diagram of a first embodiment of the blade of the present utility model;

FIG. 6 is a block diagram of a second embodiment of the blade of the present utility model;

FIG. 7 is a schematic view of the inside construction of a first embodiment of a right angled nose element of the blade of the present utility model;

FIG. 8 is a cut-away view of section A-A of FIG. 7;

FIG. 9 is a schematic view of the inside construction of a second embodiment of a right angled nose monomer in the insert of the present utility model;

FIG. 10 is a sectional view B-B of FIG. 9;

FIG. 11 is a schematic view of the inside construction of a third embodiment of a right angled nose monomer in the insert of the present utility model;

FIG. 12 is a C-C cut-away view of FIG. 11;

FIG. 13 is a block diagram of a third embodiment of a blade of the present utility model;

fig. 14 is a block diagram of a fourth embodiment of the blade of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "inner", "front", "rear", "left", "right", etc., are based on directions or positional relationships shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The blade of the wood chipper comprises a blade body and a blade tip, wherein the blade tip is arranged at the top of the blade body, and is a combined inclined blade tip formed by connecting a left inclined blade tip and a right inclined blade tip;

as shown in fig. 5, which is a structural diagram of a first embodiment of the blade according to the present utility model, the structural diagram includes a whole strip-shaped blade body 11 and a blade tip, in this embodiment, the blade tip is formed by alternately and integrally combining a right inclined blade tip 13 and a left inclined blade tip 14, when cutting wood, the highest position of the blade tip is the deepest position of the cutting tip, and the lowest position of the blade tip correspondingly falls on the outer end surface of the wood, so as to cut the wood into chips with the longest width of L, and the cutting maximum width is controllable, which can effectively prevent the problem that the cut wood blocks repeatedly cut once again because of failing to screen, resulting in blockage of the feeding end, and can reduce the failure rate of the whole machine operation.

In the fixing process, a plurality of horizontal tightening holes 12 are optionally arranged on the cutter body 11 to realize the fixing.

In some embodiments, the cutter body may be further configured in a plurality of single structures, as shown in fig. 6, which is a structural diagram of a second embodiment of the blade according to the present utility model, that is, the left inclined cutter tip and the right inclined cutter tip are separated from the cutter body into single structures to form a left inclined cutter tip single body 11-1 and a right inclined cutter tip single body 11-2, and the left inclined cutter tip single body 11-1 and the right inclined cutter tip single body 11-2 are alternately combined into a row during assembly. The scheme of monomer connection is adopted, larger axial cutting reaction force can be received, and in order to improve the assembly stability of the right inclined knife tip monomer and the left inclined knife tip monomer, the following specific implementation mode can be selected during specific preparation:

as shown in fig. 7 to 8, the first embodiment of the left inclined blade tip unit 11-1 and the right inclined blade tip unit 11-2 is a schematic structural diagram, a clamping groove 15 is provided at the inner side of the blade body, two clamping holes 16 are vertically provided at the lower part of the blade body, two horizontal tightening holes 12 are provided in the embodiment and are provided in the clamping groove 15, the clamping limit is realized through the clamping groove 15, the auxiliary limit is realized through the two clamping holes 16, and then the upper fastening is performed by using bolts through the horizontal tightening holes 12, so that the connection stability of the single left inclined blade tip unit 11-1 and the single right inclined blade tip unit 11-2 is improved.

In some embodiments, as shown in fig. 9-10, a schematic structural diagram of a second implementation of a left-angled knife tip monomer and a right-angled knife tip monomer; it differs from the first embodiment of the monomer described above only in that: the inner side of the cutter body 11-2-1 adopted in the embodiment is not provided with the clamping groove 15, and the horizontal direction is completely tightened by virtue of the two horizontal tightening holes 12.

In some embodiments, as shown in fig. 11-12, a schematic structural diagram of a third implementation manner of the left inclined blade tip monomer and the right inclined blade tip monomer; it differs from the first embodiment of the monomer described above only in that: the inner side of the cutter body 11-2-2 adopted in the embodiment is not provided with the clamping groove 15, the horizontal direction is completely tightened by virtue of the two horizontal tightening holes 12, and simultaneously, the lower part of the cutter body 11-2-2 is not provided with the two clamping holes 16.

As shown in fig. 13, the third embodiment of the blade of the present utility model has a relatively simple structure, i.e., similar to the first embodiment of the blade of the present utility model, and includes a long blade body 11 and a blade tip 13-1, wherein the blade tip 13-1 is an inclined blade tip.

As further shown in fig. 14, a fourth embodiment of the blade of the present utility model is structured similarly to the first embodiment of the blade of the present utility model, except that: the design of the horizontal nose structure 14-1 provided between the connection points of the right and left inclined nose 13 and 14 has an advantage in that it can prevent the problem that the connection point of the right and left inclined nose 13 and 14 is easily worn or damaged by the tip, compared with the first embodiment of the insert of the present utility model.

The rotary knife stick using the blade as described above, as shown in fig. 1 to 4, comprises a rotary roller body 1, a plurality of stepped grooves are provided on the rotary roller body 1, and the blade 11 is detachably fixed to the stepped grooves. When the rotary roller body is used, the rotary roller body is connected with power through a rotating shaft 6 to realize high-speed rotation, and is fixed on a machine body of the wood chipper through a roller body bracket 5; the blade 11 rotates at a high speed along with the rotary roller body 1, cuts the wood fed by the feeding system, cuts small pieces of wood chips, and sends the wood chips out through a screen.

Preferably, when the step groove is assembled with the combined inclined blade tip, because the left inclined blade tip and the right inclined blade tip are connected with each other, the highest position of the blade tip and the lowest position of the blade tip are provided, and in the actual cutting process, such as a rectangular wood to be cut, the wood to be cut end remained after the wood to be cut is irregularly concave-convex surface after the wood to be cut by the previous combined inclined blade tip, so that the highest position of the combined inclined blade tip on the next adjacent step groove and the lowest position of the blade tip of the previous combined inclined blade tip are staggered with each other, thereby satisfying the continuous smooth cutting operation of the wood to be cut end remained.

In order to correspond to the above-mentioned various blade configurations, the rotary roller body 1 is also provided with the following specific connection structures:

as shown in fig. 1, in the first embodiment of the rotary roller body, a fixing hole 10 is provided on the vertical surface 3-1 of the stepped groove of the rotary roller body 1-2 in the present embodiment corresponding to the horizontal tightening hole 12. In use, the blade is secured by tightening the blade through the horizontal tightening hole 12 into the securing hole 10 by means of bolts and spring washers.

In some examples, a second embodiment of the rotating roller body as shown in FIG. 2 may also be used, which differs from the first embodiment of the rotating roller body in that: the horizontal surface 3 of the stepped groove of the rotary roller body 1-1 in the present embodiment is provided with a clamping rod 7 corresponding to the clamping hole 16 on the blade. The clamping rod 7 can be directly welded with the rotary roller body 1-1 of the embodiment, or the clamping rod 7 can be detachably fixed by arranging a plurality of fixing holes on the horizontal plane 3 of the stepped groove of the rotary roller body 1-1 of the embodiment. In use, the blade having the structure shown in fig. 9 to 10 can be fastened to the present embodiment.

In some examples, a third embodiment of the rotating roller body as shown in fig. 3 may be used, where a clamping projection 9 is disposed on the vertical surface 3-1 of the stepped groove corresponding to the clamping groove 15, and in use, a blade with a connection structure as shown in fig. 7-8 will be correspondingly used, and in this example, a fixing hole 8 is disposed on the clamping projection 9 corresponding to the horizontal tightening hole 12. Meanwhile, the clamping holes 16 on the horizontal surface 3 of the stepped groove, which correspond to the blades, are also provided with clamping rods 7; when in use, the cutter body 11-2 is vertically inserted into the clamping connection rod 7 and the clamping connection convex block 9, and then the cutter body is screwed into the fixing hole 10 by penetrating the horizontal screwing hole 12 through bolts and spring washers, so that the fixing of the cutter blade is realized. The rotary roller body is also provided with an inclined concave surface 2, and the inclined concave surface 2 is correspondingly arranged on the upper part of the stepped groove.

According to the utility model, by adopting a combined connection mode of the clamping convex blocks and the clamping connecting rods, the radial direction and the left and right axial directions of the cutter body are effectively limited through the clamping connecting rods and the clamping convex blocks, so that the problem of operation of the cutter body in long-term operation can be ensured; meanwhile, the blade belongs to a consumable product and needs to be replaced frequently, and the material consumption of the blade body can be reduced by arranging the clamping grooves in the connection mode of the clamping convex blocks, so that the preparation cost is reduced under the condition of keeping the connection rigidity of the blade body, and the later maintenance cost of equipment is reduced; and the clamping convex blocks are blocky, so that strong cutting reaction force is timely received in the use process of the cutter body, the deformation of the connecting structure is not easy to cause, the safety and the reliability of equipment operation are ensured, the problem that the disassembly and assembly are difficult due to the deformation of the connecting structure when the later-stage blade is replaced is also prevented, and the use effect is good.

Claims (7)

1. Wood chipper blade, its characterized in that: the cutter comprises a cutter body and a cutter tip, wherein the cutter tip is arranged at the top of the cutter body, and is an inclined cutter tip or a combined inclined cutter tip formed by connecting a left inclined cutter tip and a right inclined cutter tip; a plurality of horizontal tightening holes are formed in the cutter body; the inner side of the cutter body is also provided with a clamping groove; the lower part of the cutter body is vertically provided with a plurality of clamping holes.

2. A rotary knife bar employing a wood chipper blade according to claim 1 wherein: the rotary roller comprises a rotary roller body, wherein a plurality of stepped grooves are formed in the rotary roller body, and the blades are detachably fixed to the stepped grooves.

3. The rotary knife bar of claim 2 wherein: and a fixing hole is arranged on the vertical surface of the stepped groove corresponding to the horizontal tightening hole.

4. The rotary knife bar of claim 2 wherein: the vertical surface of the stepped groove is provided with a clamping convex block corresponding to the clamping groove, and the clamping convex block is provided with a fixing hole corresponding to the horizontal tightening hole.

5. The rotary knife bar of claim 2 wherein: the horizontal plane of the step groove is provided with a clamping rod corresponding to the clamping hole.

6. The rotary knife bar of claim 2 wherein: the rotary roller body is also provided with an inclined concave surface, and the inclined concave surface is correspondingly arranged on the upper part of the stepped groove.

7. The rotary knife bar of claim 2 wherein: the lowest part of the tool nose is not lower than the top end of the vertical surface of the step groove.

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