Crushing saw blade for crushing wood leftover materials

Abstract

The invention discloses a crushing saw blade for crushing wood leftover materials, which comprises a saw blade body, a plurality of tooth holders with unequal tooth pitches are arranged on the saw blade body, chip pockets are arranged between the tooth holders, a plurality of combined tool bit units are arranged on the saw blade body, and the combined tool bit units are arranged on the saw blade body. And a heavy crushing tool bit and a light tool bit are respectively arranged in each combined tool bit unit. According to the smashing saw blade for smashing the wood leftover materials, the heavy smashing tool bits and the light tool bits can be designed in a combined distribution mode, the light design of the smashing saw blade is achieved, and the equipment power consumed in the using process is lower; the problem that a common circular saw blade can only cut off and cannot crush materials is solved, the design purpose that the same saw blade has the double functions of cutting off and crushing is achieved, and the crushing effect of material leftover materials is better; the unequal tooth pitch design is adopted, and the front angle of the heavy crushing tool bit is slightly smaller than the front angle of the light tool bit, so that a good enough crushing effect is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of saw blades, and in particular relates to a crushing saw blade for crushing wood scraps. Background Art

[0002] At present, one way to crush the scraps of wood is to set small blades on a bulky special-shaped body to form a combination for crushing. The whole set of crushing knives weighs 10KG, which is not only bulky, but also not energy-saving. Moreover, after replacing new small blades or repairing small blades, there is a tendency for dynamic balance to be poor, which will cause vibration during use.

[0003] Another way is to use a crushing knife with an ordinary thickened blade. The problem is that the crushing effect is not ideal, and the cutting process will produce a harsh whistle due to the air flow, causing serious sound pollution and affecting the health of workshop workers.

[0004] The third method is to use a crushing knife with equal tooth pitch, which also has the problem of poor sawdust crushing effect, large sawdust will remain, and the crushing is not complete. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of existing wood scrap crushing tools being bulky, not energy-saving, prone to equipment vibration, loud crushing noise, and poor crushing effect, and to provide a lightweight, energy-saving, cutting and crushing integrated, effective crushing saw blade for crushing wood scraps.

[0006] The technical solution adopted by the present invention to achieve its invention purpose is: a crushing saw blade for crushing wood scraps, including a saw blade body, a plurality of tooth seats with unequal tooth pitches are arranged on the saw blade body, a chip groove is arranged between the tooth seats, and a plurality of combined cutter head units are arranged on the saw blade body, and each combined cutter head unit is respectively provided with a heavy-duty crushing cutter head and a light-duty cutter head. The crushing saw blade for crushing wood scraps adopts unequal tooth pitches for the tooth seats on the saw blade body, and at the same time, a plurality of combined cutter head units are arranged on the saw blade body, and each combined cutter head unit is respectively provided with a heavy-duty crushing cutter head and a light-duty cutter head. By setting the tooth seats with unequal tooth pitches, effective crushing can be achieved, and there will be no chip blockage, wood chip residue, incomplete crushing and the like in the cutting and crushing process. The unequal tooth pitch design can also effectively reduce the generation of air flow, and will not produce serious noise pollution. The crushing effect is good, and it can be widely used in the cutting and crushing of various wood scraps. Through the combination of heavy-duty crushing blades and light-duty blades, the weight of the whole set of crushing blades is reduced from more than 10KG to less than 3KG, compared with the existing ordinary thickened blade crushing blades. The weight of the whole set of crushing blades is greatly reduced, realizing the lightweight design of the crushing blades, and the power consumption of the equipment during use is lower. The combination design of heavy-duty crushing blades and light-duty blades realizes both the cutting function and the crushing function, effectively solving the defect that ordinary circular saw blades only have the cutting function but not the crushing function.

[0007] Preferably, the cutting front angle of the heavy-duty crushing cutter head is smaller than the cutting front angle of the light-duty cutter head. Designing the cutting front angle of the heavy-duty crushing cutter head to be slightly smaller than the cutting front angle of the light-duty cutter head is conducive to achieving a better crushing effect.

[0008] Preferably, each combined cutter head unit includes a heavy-duty crushing cutter head and a plurality of light-duty cutter heads. The combination of the heavy-duty crushing cutter head and the light-duty cutter heads not only reduces the weight of the crushing saw blade, but also realizes the dual-function design of cutting and crushing, and can also realize the balanced design of the crushing saw blade, so that there will be no problem such as poor dynamic balance leading to equipment vibration.

[0009] Preferably, multiple light cutter heads use the same type of cutter heads or different types of cutter heads; the light cutter heads are bevel cutter heads, flat cutter heads, or trapezoidal cutter heads. According to the needs of cutting and crushing different woods, multiple light cutter heads can use cutter heads of the same type and size, or cutter heads of different types and sizes, or cutter heads of different types and sizes. For example, all the light cutter heads in each combined cutter head unit can be set as bevel cutter heads of the same size and specification, or flat cutter heads of the same size and specification, or trapezoidal cutter heads of the same size and specification. It is also possible to use cutter heads of two specifications and models, for example, each combined cutter head unit is provided with half bevel cutter heads and half flat cutter heads, the bevel cutter heads and flat cutter heads are arranged alternately, and so on. Various combinations can be made.

[0010] Preferably, the plurality of light-duty cutter heads adopt the same cutting front angle or different cutting front angles. In order to achieve more effective cutting and crushing, the plurality of light-duty cutter heads can adopt the same cutting front angle, can also adopt different cutting front angles, and can also adopt cutter heads with two or more different cutting front angles to be staggered.

[0011] Preferably, the heavy-duty crushing cutter head is in an L-shaped structure as a whole and is arranged as a multi-faceted special-shaped structure. The heavy-duty crushing cutter head includes a front blade face and a rear blade face, and a cutting edge for contacting the material is arranged between the front blade face and the rear blade face. The heavy-duty crushing cutter head mainly performs the crushing function. In order to achieve a good crushing effect and avoid problems such as residual wood chips and incomplete crushing, the heavy-duty crushing cutter head is arranged as a multi-faceted special-shaped structure. The front blade face and the rear blade face determine the cutting angle of the cutting, which can ensure the crushing effect. The cutting edge plays a key role in the cutting process, and is used as the first contact edge of the entry point when cutting wood.

[0012] Preferably, the heavy-duty crushing cutter head also includes a side flush surface, a supporting surface, a welding surface and a tail surface, and a front cutting surface chamfer is provided between the front cutting surface and the chip groove. The heavy-duty crushing cutter head is composed of multiple surfaces, and the setting of the front cutting surface chamfer can increase the chip holding space of the chip groove, and wood chips are not easy to block chips at this position. The welding surface on the heavy-duty crushing cutter head is conveniently welded to the tooth seat by high-frequency welding with silver welding sheet as the medium, which can enhance the welding strength. The welding strength is greater than 140MPa. During the welding process, the supporting surface on the heavy-duty crushing cutter head fits tightly to the side of the saw blade body. During the sharpening stage of the cutter head, the side flush surface needs to be ground flat.

[0013] Preferably, the chip grooves are arranged in chip groove units, each chip groove unit is provided with a large chip groove and a small chip groove. The chip grooves are arranged in a plurality of types and in different sizes, and the plurality of types of chip grooves are located below the cutter head as a chip space, which can accommodate and discharge wood chips.

[0014] Preferably, each chip unit is provided with a plurality of small chip grooves of the same size or different sizes. A plurality of different small chip grooves or a plurality of the same small chip grooves make the chip holding and removal capacity of the crushing saw blade stronger and the cutting and crushing effect better.

[0015] Preferably, a center hole is provided at the center position of the saw blade body, and center hole chamfers are provided at the hole ends of the center hole axially facing the front and back sides of the saw blade body; and a plurality of positioning holes are also provided on the saw blade body.

[0016] The beneficial effects of the present invention are as follows: the crushing saw blade used for crushing wood scraps can combine and distribute the heavy-duty crushing blade head with the light-duty blade head, and reduce the weight of the whole set of crushing blades from more than 10KG to less than 3KG, thereby realizing the lightweight design of the crushing saw blade and lowering the power consumption of the equipment during use; through the combined design of the heavy-duty crushing blade head and the light-duty blade head, the problem that ordinary circular saw blades can only cut but not crush is solved, and the design purpose of the same saw blade having the dual functions of cutting and crushing is realized, so that the crushing effect of material scraps is better; the unequal tooth pitch design is adopted, and the front angle of the heavy-duty crushing blade head is slightly smaller than the front angle of the light-duty blade head, so as to achieve a sufficiently good crushing effect. In the process of cutting and crushing, there will be no blockage of chips, residual wood chips, incomplete crushing and the like. The unequal tooth pitch design can also effectively reduce the generation of air flow, and will not produce serious noise pollution. The crushing effect is good, and it can be widely used in the cutting and crushing of various wood scraps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a crushing saw blade for crushing wood scraps of the present invention; FIG2 is a schematic structural diagram of another angle of the pulverizing saw blade for pulverizing wood scraps of the present invention; FIG3 is a front view of a comminuting saw blade for comminuting wood scraps according to the present invention; FIG4 is a reverse side view of the pulverizing saw blade for pulverizing wood scraps according to the present invention; Figure 5 It is a side view of a crushing saw blade for crushing wood scraps of the present invention; Figure 6 It is a partial enlarged view of the crushing saw blade used for crushing wood scraps of the present invention; Figure 7 It is a partial enlarged view of another angle of the crushing saw blade for crushing wood scraps of the present invention; Figure 8 This is a partial structural schematic diagram of a crushing saw blade used for crushing wood scraps in Example 2 of the present invention; Fig. 9This is a partial structural schematic diagram of a crushing saw blade used for crushing wood scraps in Example 3 of the present invention; Fig.10 It is a partial structural schematic diagram of a crushing saw blade used for crushing wood scraps in Example 4 of the present invention; Fig.11 This is a schematic structural diagram of a crushing saw blade for crushing wood scraps in Embodiment 5 of the present invention; In the figure: 1, cutter head, 10, combined cutter head unit, 11, heavy-duty crushing cutter head, 111, front cutting surface, 112, cutting edge, 113, back cutting surface, 114, side flush surface, 115, supporting surface, 116, front cutting surface chamfer, 117, welding surface, 118, rear surface; 12, light blade head, 121, B-type light blade head, 122, C-type light blade head; 13. Trapezoidal blade head, 14. Flat blade head, 15. Oblique blade head; 2. saw blade body, 21. center hole, 22. positioning hole, 23. center hole chamfer; 3. Chip groove, 30. Chip groove unit, 31. Large chip groove, 32, small chip groove, 321, first small chip groove, 322, second small chip groove, 323, third small chip groove, 324, fourth small chip groove, 325, fifth small chip groove, 326, sixth small chip groove, 327, seventh small chip groove, 328, eighth small chip groove; 33. Medium chip groove; 4. Gear seat. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] Embodiment 1: exist Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 In the embodiment shown, a shredding saw blade for shredding wood scraps includes a saw blade body 2 and a plurality of combined cutter head units arranged on the saw blade body 2, each of which is provided with a heavy-duty shredding cutter head 11 and a light-duty cutter head 12. The saw blade body 2, the heavy-duty shredding cutter head 11 and the light-duty cutter head 12 are formed into an integrated structure by high-frequency welding and then sharpening. In this embodiment, each combined cutter head unit 10 is provided with a heavy-duty shredding cutter head 11 and a plurality of light-duty cutter heads 12.

[0020] The saw blade body 2 is mainly used to support the cutter head and facilitate connection with the crushing equipment.

[0021] A center hole 21 is provided at the center of the saw blade body 2, and the crushing saw blade is installed on the main shaft of the crushing device through the center hole 21. In order to facilitate the rapid installation and removal of the crushing saw blade and the main shaft, center hole chamfers 23 are provided at the hole ends of the center hole 21 along the axial direction toward the front and back sides of the saw blade body 2. The center hole chamfers 23 are provided on the front and back sides of the saw blade body and are symmetrically distributed.

[0022] In order to realize the installation and positioning of the crushing saw blade and the crushing equipment, and facilitate the fixed connection between the saw blade body 2 and the crushing equipment flange, a plurality of positioning holes 22 are also provided on the saw blade body 2. The positioning holes 22 are evenly distributed on the saw blade body 2 with the center hole 21 as the center. The shape and size of the positioning holes 22 are specifically set according to the type of crushing equipment. They can be positioning through holes, positioning countersunk holes, or even positioning threaded holes. The specific design principle is to facilitate the locking and fixing of the saw blade on the crushing equipment. In this embodiment, the positioning holes 22 are positioning countersunk holes, and there are eight positioning countersunk holes evenly distributed in total.

[0023] The outer circumference of the saw blade body 2 is provided with a plurality of tooth seats 4 with unequal tooth pitches, and a chip groove 3 is provided between the tooth seats 4. The chip groove is provided for the purpose of accommodating sawdust during the crushing process, and for timely removing chips during the crushing process to prevent chip blockage and affect the cutting and crushing effect, and at the same time avoid the crushing saw blade from generating excess heat.

[0024] The chip grooves 3 are arranged in various types and sizes, and the chip grooves 3 include large chip grooves 31 and small chip grooves 32. The large chip grooves 31 and the small chip grooves 32 are arranged at unequal intervals and sizes.

[0025] In another embodiment, the chip groove 3 includes a large chip groove 31, a medium chip groove 33 and a small chip groove 32. The large chip groove 31, the medium chip groove 33 and the small chip groove 32 are arranged at unequal intervals and sizes.

[0026] The plurality of small chip grooves 32 may be arranged in the same size and the same specification, or in different sizes and specifications, and may be evenly distributed, or arranged in unequal sizes in descending or increasing order, or may be arranged in intervals.

[0027] In this embodiment, the chip groove 3 is arranged in a chip groove unit, that is, a plurality of chip groove units 30 are arranged on the saw blade body 2, each chip groove unit 30 includes a large chip groove 31 and eight small chip grooves 32, wherein the eight small chip grooves are arranged in the same size and specification.

[0028] In another embodiment, each chip unit 30 includes one large chip groove 31, one medium chip groove 33 and seven small chip grooves 32. The large chip groove 31 is different from the other small chip grooves 32 and the medium chip grooves, and has a larger chip space capacity.

[0029] The tooth seat 4 is provided with various types of cutter heads 1 .

[0030] The cutter head 1 comprises a heavy-duty crushing cutter head 11 and a light-duty cutter head 12. The heavy-duty crushing cutter head 11 and the light-duty cutter head 12 are arranged at unequal intervals and in unequal sizes.

[0031] The light blade head can be used to cut the material being cut, and the heavy crushing blade head can be used to crush the waste of the material being cut and break the wood.

[0032] The heavy-duty crushing cutter head 11 is provided with a cutting front angle α, so as to ensure the sharpness of the cutter head tip. The light-duty cutter head 12 is provided with at least one cutting front angle, for example, the cutting front angle β, the cutting front angle γ, or the cutting front angle δ, and the cutting front angle β, the cutting front angle γ, and the cutting front angle δ may be the same or different.

[0033] In this embodiment, the light-duty cutter head 12 is provided with two different cutting front angles β and γ, and the cutting front angle β and the cutting front angle γ are arranged at intervals.

[0034] The cutting front angle α of the heavy-duty crushing cutter head 12 is slightly smaller than the cutting front angle β or γ of the light-duty cutter head.

[0035] In this embodiment, the cutter head 1 is arranged in a cutter head unit, and each combined cutter head unit 10 is respectively provided with a heavy crushing cutter head 11 and a plurality of light cutter heads 12, wherein the plurality of light cutter heads 12 may be cutters of the same model and size, or cutters of different models and sizes. Moreover, when the plurality of light cutter heads 12 are cutters of different models and sizes, they may be arranged in ascending or descending order. It is also possible to adopt light cutter heads of some of the same model and some of different models. When specifically arranged, light cutter heads of the same specification and size are arranged at intervals from each other.

[0036] In this embodiment, the light cutter heads 12 are of the same model and size with different cutting front angles, and eight light cutter heads 12 are arranged at equal intervals. The cutting front angles of two adjacent light cutter heads are different. The light cutter heads 12 are of the same type, which is convenient for batch welding and batch sharpening during the production process, and are finally used to cut wood. For example, the light cutter heads 12 can be inclined cutter heads, flat cutter heads or trapezoidal cutter heads, etc., and can be specifically designed according to actual needs.

[0037] The large chip groove 31 is arranged between the last light cutter head in the previous cutter head unit and the heavy crushing cutter head of the next cutter head unit in the direction of rotation of the cutting. The small chip groove 32 is arranged between two adjacent light cutter heads.

[0038] The heavy-duty crushing cutter head 11 is configured as an L-shaped structure as a whole and is arranged in a special shape. The volume of the heavy-duty crushing cutter head 11 is much larger than that of the light-duty cutter head 12 .

[0039] The heavy-duty crushing cutter head 11 is composed of multiple surfaces, including a front cutting surface 111 for ensuring cutting sharpness, a rear cutting surface 113 for ensuring cutting sharpness, a side flush surface 114 for promoting the welding process of the cutter head, a supporting surface 115 for strengthening the bonding strength between the cutter head and the saw blade body and promoting welding quality, a welding surface 117 and a tail surface 118 for welding the heavy-duty crushing cutter head to the tooth seat of the saw blade body.

[0040] A cutting edge 112 for contacting the material is provided between the rake face 111 and the rear face 113. The rake face 111 and the rear face 113 determine the size of the cutting angle. The cutting edge 112 plays a key role in the cutting process and is used as the first contact angle of the entry point when cutting wood. A rake face chamfer 116 is provided between the rake face 111 and the chip groove 3, which can effectively increase the chip space of the chip groove, so that wood chips are not easily accumulated during the crushing process, causing chip blocking.

[0041] The welding surface on the heavy-duty crushing cutter head is welded to the tooth seat by high-frequency welding with silver solder as the medium. The welding strength is >140MPa. During the welding process, the support surface on the heavy-duty crushing cutter head is tightly fitted with the side of the saw blade body (for example, it can be the front side of the saw blade or the back side of the saw blade). During the sharpening stage of the cutter head, the side flush surface needs to be ground flat, that is, the side flush surface needs to be flush with the front side of the saw blade or the back side of the saw blade. During the sharpening process, the front blade face, the back blade face and the two side faces also need to be processed.

[0042] The shredding saw blade used for shredding wood scraps adopts a heavy-duty shredding cutter head, an unequal tooth pitch design, and a large and small chip groove design. The heavy-duty shredding cutter head and the light-duty cutter head are combined and distributed to reduce the weight of the entire set of shredding cutters from more than 10KG to less than 3KG. It is relatively light and the power consumption of the equipment during use is lower. The heavy-duty shredding cutter head design is introduced for the first time to solve the problem that ordinary circular saw blades can only cut but not shred. The unequal tooth pitch design is adopted, and the front angle of the heavy-duty shredding cutter head is slightly smaller than that of the light-duty cutter head to achieve a sufficiently good shredding effect.

[0043] Embodiment 2: exist Figure 8 In the embodiment shown, a shredding saw blade for shredding wood scraps has a technical solution that is substantially the same as that of embodiment 1, except that the chip grooves 3 are provided in various types and sizes, and the chip grooves 3 include large chip grooves 31 and small chip grooves 32. The large chip grooves 31 and the small chip grooves 32 are provided at unequal intervals and sizes.

[0044] The large chip groove 31 is different from other small chip grooves 32. The large chip groove 31 is larger than all other small chip grooves 32. The large chip groove 31 has more chip space capacity.

[0045] In this embodiment, the chip groove 3 is arranged in a chip groove unit, that is, a plurality of chip groove units 30 are arranged on the saw blade body 2, and each chip groove unit 30 includes a large chip groove 31 and eight small chip grooves 32.

[0046] Among them, the small chip groove 32 includes a first small chip groove 321, a second small chip groove 322, a third small chip groove 323, a fourth small chip groove 324, a fifth small chip groove 325, a sixth small chip groove 326, a seventh small chip groove 327, and an eighth small chip groove 328 which decrease in sequence along the facing cutting direction.

[0047] Embodiment 3: exist Fig. 9 In the embodiment shown, a shredding saw blade for shredding wood scraps has a technical solution that is substantially the same as that of embodiment 1, except that the chip grooves 3 are provided in various types and sizes, and the chip grooves 3 include large chip grooves 31 and small chip grooves 32. The large chip grooves 31 and the small chip grooves 32 are provided at unequal intervals and sizes.

[0048] The large chip groove 31 is different from other small chip grooves 32. The large chip groove 31 is larger than all other small chip grooves 32. The large chip groove 31 has more chip space capacity.

[0049] In this embodiment, the chip groove 3 is arranged in a chip groove unit, that is, a plurality of chip groove units 30 are arranged on the saw blade body 2, and each chip groove unit 30 includes a large chip groove 31 and eight small chip grooves 32.

[0050] Wherein, the small chip grooves 32 include a first small chip groove 321, a second small chip groove 322, a third small chip groove 323, a fourth small chip groove 324, a fifth small chip groove 325, a sixth small chip groove 326, a seventh small chip groove 327, and an eighth small chip groove 328. A plurality of small chip grooves 32 are arranged at intervals along the cutting direction, and the sizes of two adjacent small chip grooves are different. That is, the large chip groove 31 is larger than the first small chip groove 321 thereafter, the first small chip groove 321 is different from the second small chip groove 322, the third small chip groove 323 is the same as the first small chip groove 321, the second small chip groove 322 is the same as the fourth small chip groove 324, and so on.

[0051] Embodiment 4: exist Fig.10 In the embodiment shown, a comminuting saw blade for comminuting wood scraps includes a saw blade body 2 and a plurality of combined cutter head units arranged on the saw blade body 2, each of which is respectively provided with a heavy-duty comminuting cutter head 11 and a light-duty cutter head 12. The saw blade body 2, the heavy-duty comminuting cutter head 11 and the light-duty cutter head 12 are formed into an integrated structure by high-frequency welding and then sharpening.

[0052] In this embodiment, each combined cutter head unit is provided with a heavy-duty crushing cutter head 11 and a plurality of light-duty cutter heads 12 .

[0053] The saw blade body 2 is mainly used to support the cutter head and facilitate connection with the crushing equipment.

[0054] A center hole 21 is provided at the center of the saw blade body 2, and the crushing saw blade is installed on the main shaft of the crushing device through the center hole 21. In order to facilitate the rapid installation and removal of the crushing saw blade and the main shaft, center hole chamfers 23 are provided at the hole ends of the center hole 21 along the axial direction toward the front and back sides of the saw blade body 2. The center hole chamfers 23 are provided on the front and back sides of the saw blade body and are symmetrically distributed.

[0055] In order to realize the installation and positioning of the crushing saw blade and the crushing equipment, and facilitate the fixed connection between the saw blade body 2 and the crushing equipment flange, a plurality of positioning holes 22 are also provided on the saw blade body 2. The positioning holes 22 are evenly distributed on the saw blade body 2 with the center hole 21 as the center. The shape and size of the positioning holes 22 are specifically set according to the type of crushing equipment. They can be positioning through holes, positioning countersunk holes, or even positioning threaded holes. The specific design principle is to facilitate the locking and fixing of the saw blade on the crushing equipment. In this embodiment, the positioning holes 22 are positioning countersunk holes, and there are eight positioning countersunk holes evenly distributed in total.

[0056] A plurality of tooth seats 4 are arranged on the outer circumference of the saw blade body 2, and a chip groove 3 is arranged between the tooth seats 4. The chip groove is provided for the purpose of accommodating wood chips during the crushing process, and for timely removing chips during the crushing process to prevent chip blockage and affect the cutting and crushing effect, and at the same time avoid the crushing saw blade from generating excess heat.

[0057] The chip grooves 3 are arranged in various types and sizes, and the chip grooves 3 include large chip grooves 31, medium chip grooves 33 and small chip grooves 32. The large chip grooves 31, medium chip grooves 33 and small chip grooves 32 are arranged at unequal intervals and sizes.

[0058] In this embodiment, the chip groove 3 is arranged in a chip groove unit, that is, a plurality of chip groove units 30 are arranged on the saw blade body 2, each chip groove unit 30 includes a large chip groove 31, a medium chip groove 33 and five small chip grooves 32, wherein the five small chip grooves are arranged in the same size and specification.

[0059] The tooth seat 4 is provided with various types of cutter heads 1 .

[0060] The cutter head 1 comprises a heavy-duty crushing cutter head 11 and a light-duty cutter head 12, which are arranged at different intervals and in different sizes. The cutting front angle α of the heavy-duty crushing cutter head 12 is slightly smaller than the cutting front angle β, γ or δ of the light-duty cutter head.

[0061] The light blade head can be used to cut the material being cut, and the heavy crushing blade head can be used to crush the waste of the material being cut and break the wood.

[0062] The cutting front angle α of the heavy-duty crushing cutter head 11 can ensure the sharpness of the cutter head tip. The cutting front angle of the light-duty cutter head 12 is β, γ or δ, and the cutting front angles β, γ and δ are different.

[0063] In this embodiment, the cutter head 1 is arranged in a cutter head unit, and each combined cutter head unit 10 is respectively provided with a heavy crushing cutter head 11 and six light cutter heads 12, wherein the six light cutter heads 12 are respectively provided with a trapezoidal cutter head 13, a flat cutter head 14 and an oblique cutter head 15, a trapezoidal cutter head 13, a flat cutter head 14 and an oblique cutter head 15 form a group of light cutter heads, and each cutter head unit is provided with two groups of light cutter heads. The cutting front angles of the trapezoidal cutter head 13, the flat cutter head 14 and the oblique cutter head 15 are β, γ and δ respectively.

[0064] The large chip groove 31 is arranged between the last light cutter head in the previous cutter head unit and the next heavy crushing cutter head. The medium chip groove 33 is arranged between the large chip groove and the small chip groove, and the small chip groove 32 is arranged between two adjacent light cutter heads. In this embodiment, the large chip groove 31 is arranged between the bevel cutter head 15 of the previous cutter head unit and the heavy crushing cutter head 11 in the next cutter head unit, and the medium chip groove is arranged between the heavy crushing cutter head 11 and the trapezoidal cutter head 13.

[0065] The heavy-duty crushing cutter head 11 is configured as an L-shaped structure as a whole and is arranged in a special shape. The volume of the heavy-duty crushing cutter head 11 is much larger than that of the light-duty cutter head 12 .

[0066] The heavy-duty crushing cutter head 11 is composed of multiple surfaces, including a front cutting surface 111 for ensuring cutting sharpness, a rear cutting surface 113 for ensuring cutting sharpness, a side flush surface 114 for promoting the welding process of the cutter head, a supporting surface 115 for strengthening the bonding strength between the cutter head and the saw blade body and promoting welding quality, a welding surface 117 and a tail surface 118 for welding the heavy-duty crushing cutter head to the tooth seat of the saw blade body.

[0067] A cutting edge 112 for contacting the material is provided between the rake face 111 and the rear face 113. The rake face 111 and the rear face 113 determine the size of the cutting angle. The cutting edge 112 plays a key role in the cutting process and is used as the first contact angle of the entry point when cutting wood. A rake face chamfer 116 is provided between the rake face 111 and the chip groove 3, which can effectively increase the chip space of the chip groove, so that wood chips are not easily accumulated during the crushing process, causing chip blocking.

[0068] The welding surface on the heavy-duty crushing cutter head is welded to the tooth seat by high-frequency welding with silver solder as the medium. The welding strength is >140MPa. During the welding process, the support surface on the heavy-duty crushing cutter head is tightly fitted with the side of the saw blade body (for example, it can be the front side of the saw blade or the back side of the saw blade). During the sharpening stage of the cutter head, the side flush surface needs to be ground flat, that is, the side flush surface needs to be flush with the front side of the saw blade or the back side of the saw blade. During the sharpening process, the front blade face, the back blade face and the two side faces also need to be processed.

[0069] This shredding saw blade for shredding wood scraps adopts a heavy-duty shredding cutter head, an unequal pitch design, and a large and small chip groove design. The heavy-duty shredding cutter head and the light-duty cutter head are combined and distributed to reduce the weight of the entire set of shredding cutters from more than 10KG to less than 3KG. It is relatively light, and the power consumption of the equipment during use is lower; the heavy-duty shredding cutter head design is introduced for the first time to solve the problem that ordinary circular saw blades can only cut but not shred; the unequal pitch design is adopted, and the front angle of the heavy-duty shredding cutter head is slightly smaller than the front angle of the light-duty cutter head to achieve a sufficiently good shredding effect.

[0070] Embodiment 5: exist Fig.11 In the embodiment shown, a comminution saw blade for comminuting wood scraps has a technical solution that is substantially the same as that of embodiment 1, except that: the tooth seat 4 is provided with a plurality of types of cutter heads 1 .

[0071] Each combined cutter head unit is provided with a heavy crushing cutter head 11 and a light cutter head 12. The heavy crushing cutter head 11 and the light cutter head 12 are arranged with unequal spacing and unequal sizes. The cutting front angle α of the heavy crushing cutter head 12 is slightly smaller than the cutting front angle β, γ or δ of the light cutter head.

[0072] The light blade head can be used to cut the material being cut, and the heavy crushing blade head can be used to crush the waste of the material being cut and break the wood.

[0073] The cutting front angle α of the heavy-duty crushing cutter head 11 can ensure the sharpness of the cutter head tip. The cutting front angles of the light-duty cutter head 12 are set in two ways, namely, the cutting front angle β and the cutting front angle γ. The cutting front angles β and γ are set at different angles, and the cutting front angles β and γ are set at intervals.

[0074] In this embodiment, the cutter head 1 is arranged in a cutter head unit, and each combined cutter head unit 10 is respectively provided with a heavy-duty crushing cutter head 11 and a plurality of light-duty cutter heads 12 .

[0075] In this embodiment, the light-duty cutter head 12 adopts two different models and different sizes. That is, the light-duty cutter head 12 includes a B-type light-duty cutter head 121 and a C-type light-duty cutter head 122, and the B-type light-duty cutter head 121 and the C-type light-duty cutter head 122 are arranged at intervals. The cutting front angle of the B-type light-duty cutter head 121 is β, and the cutting front angle of the C-type light-duty cutter head 122 is γ.

[0076] The pulverizing saw blade for pulverizing wood scraps described in the above embodiment adopts a heavy-duty pulverizing blade head, an unequal pitch design, and a large and small chip groove design. The heavy-duty pulverizing blade head and the light-duty blade head are combined and distributed to reduce the weight of the entire set of pulverizing blades from more than 10KG to less than 3KG. It is relatively light, and the power consumption of the equipment during use is lower; the heavy-duty pulverizing blade head design is introduced for the first time to solve the problem that ordinary circular saw blades can only cut but not pulverize; the unequal pitch design is adopted, and the front angle of the heavy-duty pulverizing blade head is slightly smaller than the front angle of the light-duty blade head to achieve a sufficiently good pulverizing effect.

[0077] The contents described in the embodiments of this specification are merely an enumeration of implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the present invention also includes equivalent technical means that can be thought of by those skilled in the art based on the inventive concept.

Claims

1. A saw blade for crushing wood scraps, comprising a saw blade body (2), characterized in that: The saw blade body (2) is provided with a plurality of tooth seats (4) with unequal tooth pitches, a chip groove (3) is provided between the tooth seats (4), and the saw blade body (2) is provided with a plurality of combined cutter head units (10), each of the combined cutter head units (10) being provided with a heavy-duty crushing cutter head (11) and a light-duty cutter head (12).

2. The saw blade for crushing wood scraps according to claim 1, characterized in that: The cutting front angle of the heavy-duty crushing cutter head (11) is smaller than the cutting front angle of the light-duty cutter head (12).

3. The saw blade for crushing wood scraps according to claim 2, characterized in that: Each combined cutter head unit (10) comprises a heavy-duty crushing cutter head (11) and a plurality of light-duty cutter heads (12).

4. The saw blade for crushing wood scraps according to claim 3, characterized in that: The plurality of light-duty cutter heads (12) are cutter heads of the same model or cutter heads of different models; the light-duty cutter heads (12) are bevel cutter heads, flat cutter heads, or trapezoidal cutter heads.

5. The saw blade for crushing wood scraps according to claim 3, characterized in that: The plurality of light-duty cutter heads (12) adopt the same cutting front angle or different cutting front angles.

6. The saw blade for crushing wood scraps according to any one of claims 1 to 5, characterized in that: The heavy-duty crushing cutter head (11) is configured as an L-shaped structure with multiple faces and special shapes. The heavy-duty crushing cutter head (11) comprises a front cutting surface (111) and a rear cutting surface (113). A cutting edge (112) is provided between the front cutting surface (111) and the rear cutting surface (113) as a contact edge for cutting into a material.

7. The saw blade for crushing wood scraps according to claim 6, characterized in that: The heavy-duty crushing cutter head (11) further comprises a side flush surface (114), a supporting surface (115), a welding surface (117) and a tail surface (118), and a front cutting surface chamfer (116) is provided between the front cutting surface (111) and the chip groove (3).

8. The saw blade for crushing wood scraps according to any one of claims 1 to 5, characterized in that: The chip grooves (3) are arranged in chip groove units, and each chip groove unit (30) is provided with a large chip groove (31) and a small chip groove (32).

9. The saw blade for crushing wood scraps according to claim 8, characterized in that: Each chip containing unit (30) is provided with a plurality of small chip containing grooves (32) of the same size or different sizes.

10. The saw blade for crushing wood scraps according to any one of claims 1 to 5, characterized in that: A center hole (21) is provided at the center of the saw blade body (2), and center hole chamfers (23) are provided at both ends of the center hole (21); a plurality of positioning holes (22) are also provided on the saw blade body (2).

Images