Circular saw blade for cutting foamed material

Abstract

The utility model relates to a circular saw blade for cutting foamed material, including the circular blade base body of circular sheet shape and the setting of a plurality of cutting edges around the circular blade base body. The circular blade base body is equipped with a plurality of round holes, and the round holes are arranged around and close to the center of the circular blade base body. The circular blade base body is also equipped with a plurality of arc waist holes arranged close to the cutting edges, and the arc waist holes are sequentially arranged around the center of the circular blade base body, forming an arc hole circular ring. The utility model sets arc waist holes and round holes on the circular blade base body, which facilitates heat dissipation of the circular blade base body. At the same time, the setting of the arc waist holes and the round holes reduces the weight of the circular saw blade, the inertia and centrifugal force during rotation, thereby reducing the energy consumption of the circular saw blade equipped with the utility model.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, and in particular to a circular saw blade for cutting foamed materials. Background Technology

[0002] When processing foamed materials and their composite boards, it is usually necessary to cut the foamed materials and the composite boards they are made from. The main cutting tools currently available are band saws and circular saw blades.

[0003] When cutting foamed materials thicker than 300 mm, the cutting accuracy and efficiency are relatively low if a band saw is used. Therefore, a circular saw blade is usually used for cutting thicker foamed materials. During the cutting process, the friction between the circular saw blade and the foamed material generates a large amount of heat. Foamed materials cannot be cooled with cutting fluid or compressed air; they can only be cooled by natural air.

[0004] However, most circular saw blades on the market currently have a diameter of less than 600 mm, which is only suitable for cutting thinner foam materials. When cutting foam materials thicker than 300 mm, especially those thicker than 500 mm, simply increasing the diameter of the circular saw blade may allow cutting foam materials thicker than 300 mm, but during the cutting process, the increased contact area between the circular saw blade and the foam material can easily cause the blade to overheat, leading to spontaneous combustion or even a fire. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model discloses a processing fixture that facilitates heat dissipation of the circular saw blade when cutting thick foamed materials, thereby reducing the possibility of fire.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A circular saw blade for cutting foamed materials includes a circular saw blade base and a plurality of cutting edges arranged around the saw blade base; the saw blade base has a plurality of circular holes arranged around and close to the center of the saw blade base; the saw blade base also has a plurality of arc-shaped waist holes arranged close to the cutting edges, and each of the arc-shaped waist holes is arranged sequentially around the center of the saw blade base to form an arc-shaped hole ring.

[0008] Furthermore, at least two arc-shaped hole rings are provided.

[0009] Furthermore, the arc-shaped waist holes are staggered between adjacent arc-shaped annular holes.

[0010] Furthermore, the blade includes a left blade and a right blade; the left blade includes a left serrated portion and a left blade tip disposed on the left serrated portion; the right blade includes a right serrated portion and a right blade tip disposed on the right serrated portion; the left serrated portion and the right serrated portion have the same structure; the left serrated portion and the right serrated portion are arranged alternately in a left-right-right sequence.

[0011] Furthermore, stress lines are provided between the arc-shaped annular hole and the circular hole.

[0012] Furthermore, the diameter of the saw blade substrate ranges from 600 to 1200 mm, and the thickness of the saw blade substrate ranges from 3 to 8 mm.

[0013] Furthermore, the central angle corresponding to the arc surface of the arc-shaped waist hole ranges from 3 to 6°, and the width of the arc-shaped waist hole ranges from 20 to 30 millimeters; in the arc-shaped hole ring, the central angle corresponding to the interval area between adjacent arc-shaped waist holes ranges from 3 to 5°.

[0014] Furthermore, the acute angle between the cutting edge plane of the left blade and the plane containing the saw blade base ranges from 15 to 20°.

[0015] Furthermore, the thickness of both the left and right cutting edges is greater than the thickness of the saw blade substrate.

[0016] Furthermore, the gap area between each of the blades is a chip groove, and the distance between the arc-shaped waist hole near the blade and the bottom of the chip groove ranges from 15 to 30 millimeters.

[0017] Compared with existing technologies, the beneficial effects of this utility model are as follows: During the cutting of foamed materials with a circular saw blade, a large amount of heat is easily generated in the saw blade substrate near the blade edge. By setting several arc-shaped waist holes arranged in a ring on the saw blade substrate, with each arc-shaped waist hole positioned close to the blade edge, the circular saw blade can easily dissipate heat and cool down. Furthermore, the arc shape of the waist holes ensures the strength and rigidity of the saw blade substrate near the blade edge. The circular hole at the center of the saw blade substrate also provides a certain degree of heat dissipation. Simultaneously, the arc-shaped waist holes and circular holes reduce the weight of the circular saw blade itself, reducing inertia and centrifugal force during rotation, thereby reducing the energy consumption of the circular saw blade using this utility model. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the circular saw blade for cutting foamed materials according to this utility model;

[0019] Figure 2 yes Figure 1 Enlarged diagram of section A in the middle;

[0020] Figure 3This is a partial three-dimensional schematic diagram of the circular saw blade for cutting foamed materials according to this utility model;

[0021] Figure 4 This is a schematic diagram of the left-hand cutting head and the right-hand cutting head of this utility model;

[0022] Figure 5 This is a front view of the right-hand cutting head of this utility model;

[0023] Figure 6 This is a bottom view of the right-hand cutting head of this utility model;

[0024] Figure 7 This is a left view of the right-hand cutting head of this utility model.

[0025] In the picture:

[0026] 1 - Saw blade body; 2 - Blade; 2a - Left blade; 2aa - Left tooth section; 2ab - Left blade tip; 2b - Right blade; 2ba - Right tooth section; 2bb - Right blade tip; 3 - Round hole; 4 - Arc-shaped waist hole; 5 - Stress line; 6 - Chip groove; 7 - Circular saw blade mounting hole. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] This utility model discloses a circular saw blade for cutting foamed materials. The diameter of the circular saw blade is usually large, mainly used for cutting thick foamed materials and composite boards made of foamed materials, solving the problem of overheating of the circular saw blade during the cutting process. However, the diameter of the circular saw blade of this utility model can also be set within 600 mm, so as to cut some thinner foamed materials.

[0031] like Figure 1 As shown, the circular saw blade for cutting foamed materials of this utility model includes a circular saw blade base 1 and a plurality of cutting edges 2 arranged around the saw blade base 1. The cutting edges 2 are evenly spaced, and their main function is cutting, while the saw blade base 1 mainly supports the cutting edges 2. The saw blade base 1 has a plurality of circular holes 3, which are arranged around and close to the center of the saw blade base 1. Specifically, a circular saw blade mounting hole 7 is provided at the center of the saw blade base 1, consisting of a large hole concentric with the saw blade base 1 and six small holes surrounding the large hole. Each circular hole 3 is specifically arranged around the circular saw blade mounting hole 7. The saw blade base 1 also has a plurality of arc-shaped waist holes 4 arranged close to the cutting edges 2, which are arranged sequentially around the center of the saw blade base 1 to form an arc-shaped hole ring.

[0032] This invention addresses the issue of heat generation in the saw blade substrate 1 near the blade edge 2 during the cutting of foamed materials. To mitigate this, the saw blade substrate 1 is equipped with several arc-shaped waist holes 4 arranged in a ring, positioned close to the blade edge 2. This arrangement facilitates heat dissipation and cooling of the saw blade substrate 1. Compared to square, triangular, or rhomboid holes, the arc-shaped waist holes 4 provide better strength and rigidity to the area near the blade edge 2 due to their arc design. Furthermore, the arc-shaped waist holes 4 are easier to manufacture than square, triangular, or rhomboid holes. The circular holes 3 located near the circular saw blade mounting hole 7 on the saw blade substrate 1 also contribute to heat dissipation. Simultaneously, the circular holes 3 and arc-shaped waist holes 4 reduce the weight of the circular saw blade used for cutting foamed materials, decreasing the inertia and centrifugal force during rotation, thereby reducing the energy consumption of the circular saw blade used for cutting foamed materials.

[0033] In the circular saw blade for cutting foamed materials of this utility model, many technical features, such as the number of arc-shaped hole rings and the structure of the cutting edge 2, have multiple implementations. Below, for each of these technical features, including the number of arc-shaped hole rings, one implementation is selected for detailed description. This embodiment is referred to as "this embodiment." Other implementations of these features, such as the number of arc-shaped hole rings, are referred to as "other embodiments," which are briefly described below.

[0034] In this embodiment, as Figure 1 As shown, at least two arc-shaped hole rings are provided. Specifically, the saw blade base 1 has three interlocking arc-shaped hole rings arranged at equal intervals. This utility model increases the heat dissipation area of ​​the saw blade base 1 by providing multiple arc-shaped hole rings. In other embodiments, each arc-shaped waist hole 4 may not necessarily be arranged in an arc-shaped hole ring, but rather spirally around the center of the saw blade base 1.

[0035] In this embodiment, as Figure 1 As shown, the arc-shaped waist holes 4 in adjacent arc-shaped hole rings are staggered. This invention, through the staggered arrangement of the arc-shaped waist holes 4, ensures that the stress on the saw blade base 1 is more dispersed during use, reducing the risk of deformation and cracking of the saw blade base 1 due to excessive local stress. In other embodiments, the arc-shaped hole rings may also be arranged in pairs with staggered arrangement of the arc-shaped waist holes 4.

[0036] In this embodiment, as Figures 1 to 7As shown, the blade 2 includes a left blade 2a and a right blade 2b. The left blade 2a includes a left serrated portion 2aa and a left cutting head 2ab welded to the left serrated portion 2aa. The right blade 2b includes a right serrated portion 2ba and a right cutting head 2bb welded to the right serrated portion 2ba. The left serrated portion 2aa and the right serrated portion 2ba have the same structure and are arranged sequentially around the saw blade base 1 at intervals. Each left cutting head 2ab is located on the first side of the left serrated portion 2aa, and each right cutting head 2bb is located on the first side of the right serrated portion 2ba. Since the left serrated portion 2aa and the right serrated portion 2ba have the same structure, the position of the left cutting head 2ab relative to the left serrated portion 2aa is the same as the position of the right cutting head 2bb relative to the right serrated portion 2ba.

[0037] Detailed, such as Figure 7 As shown, both the left cutting edge 2ab and the right cutting edge 2bb are made of alloy and feature a beveled edge structure. Except for the orientation of the cutting edge plane, the left and right cutting edges 2ab and 2bb are structurally identical. The rake angle β of both the left and right cutting edges 2ab and 2bb is 12° to 15°, ensuring sharpness and surface finish. The number of left cutting edges 2a and right cutting edges 2b is thirty-six in each case, meaning the center angle between adjacent cutting edges 2 is 5°. This ensures sufficient chip space during high-speed cutting, improving the blade's lifespan and surface finish.

[0038] The left-hand cutting head 2ab and the right-hand cutting head 2bb are alternately set in a left-right-right sequence, that is, the cutting edge plane of the left-hand cutting head 2ab is inclined towards the left side of the saw blade base 1, and the cutting edge plane of the right-hand cutting head 2ab is inclined towards the right side of the saw blade base 1.

[0039] This invention avoids resonance during circular sawing by alternately arranging the left cutting edge 2ab and the right cutting edge 2bb in a left-right-left-right sequence. Simultaneously, the cross arrangement of the left cutting edge 2ab and the right cutting edge 2bb enhances the lateral support between the circular saw blade and the foam material, improving the processing stability of the circular saw blade. In other embodiments, each cutting edge 2 may also adopt the exact same structure.

[0040] In this embodiment, as Figure 1 As shown, a stress line 5 is provided between the arc-shaped annular hole and the circular hole 3. Multiple stress lines 5 are provided, each equally spaced, and the stress lines 5 employ a double-hidden stress line configuration. This invention, by placing the stress lines 5 between the arc-shaped annular hole and the circular hole 3, ensures the structural strength of the saw blade substrate 1 while eliminating the stress generated by the circular holes 3 and the arc-shaped waist hole 4 on both sides of the stress line 5 during the use of the circular saw blade. In other embodiments, a high-damping coating can also be sprayed onto the surface of the saw blade substrate 1 to reduce vibration.

[0041] In this embodiment, to achieve cutting of thicker foamed materials, the diameter of the saw blade substrate 1 ranges from 600 to 1200 mm, and the thickness ranges from 3 to 8 mm. The saw blade substrate 1 is made of high-strength tool steel, and through high-temperature quenching and low-temperature tempering, the overall rigidity and toughness of the saw blade substrate 1 are ensured. By limiting the thickness of the saw blade substrate 1, this invention ensures that even with a large diameter, the saw blade substrate 1 will not deform during use due to excessively thin walls. In other embodiments, the thickness of the saw blade substrate 1 can also be greater than 8 mm. Although this would improve the strength and rigidity of the saw blade substrate 1, it would also increase the total weight of the saw blade substrate 1, leading to inconvenience for the operator.

[0042] In this embodiment, as Figure 1 As shown, the central angle corresponding to the arc surface of the arc-shaped waist hole 4 ranges from 3 to 6°, and the width of the arc-shaped waist hole 4 ranges from 20 to 30 mm. Within the arc-shaped hole ring, the central angle corresponding to the interval between adjacent arc-shaped waist holes 4 ranges from 3 to 5°. The diameter of the circular hole 3 ranges from 20 to 30 mm, and the distance between adjacent circular holes 3 is 40 to 60 mm. This invention, by limiting the dimensions of the circular hole 3 and the arc-shaped waist hole 4, ensures the heat dissipation effect of the circular saw blade while also preventing insufficient strength and rigidity of the saw blade base 1 due to excessively large or dense hole areas. In other embodiments, the distance between adjacent circular holes 3 can also be slightly greater than 60 mm, but the effect is not as good as in this embodiment.

[0043] In this embodiment, as Figure 4 and Figure 6 As shown, the acute angle between the plane containing the cutting edge of the left cutting edge 2ab and the plane containing the saw blade base 1 ranges from 15 to 20°. The acute angle α between the plane containing the cutting edge of the right cutting edge 2ab and the plane containing the saw blade base 1 ranges from -15 to -20°. This invention, by limiting the angle range between the planes containing the cutting edges of the left and right cutting edges 2ab and the plane containing the saw blade base 1, facilitates the cutting of foamed materials and the removal of debris by the circular saw blade. In other embodiments, if the diameter of the saw blade base 1 is less than 1000 mm, the acute angle between the plane containing the cutting edge of the left cutting edge 2ab and the plane containing the saw blade base 1 can be slightly less than 15°, but the effect is not as good as in this embodiment.

[0044] In this embodiment, the thickness of both the left cutting edge 2ab and the right cutting edge 2bb is greater than the thickness of the saw blade base 1. Specifically, the saw blade base 1, the left saw tooth portion 2aa, and the right saw tooth portion 2ba have the same thickness, ranging from 3 to 8 mm, while the thickness of both the left cutting edge 2ab and the right cutting edge 2bb is 9 to 10 mm. This invention achieves this by setting the thickness of both the left cutting edge 2ab and the right cutting edge 2bb to be greater than the thickness of the saw blade base 1. With the increased thickness of the left cutting edge 2ab and the right cutting edge 2bb, a natural gap is formed between the saw blade base 1 and the foamed material. Thus, during cutting, only the left cutting edge 2ab and the right cutting edge 2bb participate in the cutting process, and the saw blade base 1 does not come into contact with the foamed material, thereby reducing frictional heat generation and the risk of saw jamming. In other embodiments, the thickness of both the left cutting edge 2ab and the right cutting edge 2bb can also be slightly greater than 10 mm, but the effect is not as good as in this embodiment.

[0045] In this embodiment, as Figure 3 As shown, the gap area between each blade 2 is a chip-receiving groove 6, and the distance between the arc-shaped waist hole 4 near the blade 2 and the bottom of the chip-receiving groove 6 ranges from 15 to 30 mm. This invention limits the distance between the arc-shaped waist hole 4 near the blade 2 and the bottom of the chip-receiving groove 6, preventing the arc-shaped waist hole 4 from being too close to the blade 2 and thus avoiding affecting cutting. In other embodiments, the distance between the arc-shaped waist hole 4 near the blade 2 and the bottom of the chip-receiving groove 6 can also be slightly greater than 30 mm, but the effect is not as good as this embodiment.

[0046] In summary, this invention, through the design of the arc-shaped waist hole 4, facilitates heat dissipation while ensuring the strength and rigidity of the saw blade base 1, and also reduces the energy consumption of the circular saw blade used for cutting foamed materials. Furthermore, the multiple arc-shaped circular holes increase the heat dissipation area of ​​the saw blade base 1. The staggered arrangement of the arc-shaped waist holes 4 reduces the risk of deformation and cracking of the saw blade base 1. The placement of the left and right cutting edges 2ab improves the processing stability of the circular saw blade. The stress lines 5 facilitate the elimination of stress generated during use of the circular saw blade used for cutting foamed materials. By limiting the thickness of the saw blade base 1, the large-diameter saw blade base 1 is less prone to deformation during use. Finally, by limiting the dimensions of the circular holes 3 and the arc-shaped waist holes 4, the heat dissipation effect, strength, and rigidity of the saw blade base 1 are ensured. By limiting the angle range between the cutting edges of the left and right cutting blades 2ab and the plane of the saw blade base 1, the circular saw blade facilitates the cutting of foamed materials and the removal of debris. Furthermore, by setting the thickness of both the left and right cutting blades 2ab and 2bb to be greater than the thickness of the saw blade base 1, frictional heat generation and the risk of saw jamming during cutting are reduced. Finally, by controlling the distance between the arc-shaped waist hole 4 near the cutting edge 2 and the bottom of the chip groove 6, the cutting process is prevented from being affected by the arc-shaped waist hole 4 being too close to the cutting edge 2.

[0047] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A circular saw blade for cutting foamed materials, comprising a circular saw blade base (1) and a plurality of cutting edges (2) arranged around the saw blade base (1), characterized in that, The saw blade base (1) is provided with a plurality of circular holes (3), which are arranged around and close to the center of the saw blade base (1); the saw blade base (1) is also provided with a plurality of arc-shaped waist holes (4) arranged close to the blade (2), and each arc-shaped waist hole (4) is arranged in sequence around the center of the saw blade base (1) to form an arc-shaped hole ring.

2. The circular saw blade for cutting foamed materials according to claim 1, characterized in that, At least two arc-shaped hole rings are provided.

3. The circular saw blade for cutting foamed materials according to claim 2, characterized in that, Between adjacent arc-shaped hole rings, the arc-shaped waist holes (4) are staggered.

4. The circular saw blade for cutting foamed materials according to claim 1, characterized in that, The blade (2) includes a left blade (2a) and a right blade (2b); the left blade (2a) includes a left serrated portion (2aa) and a left blade tip (2ab) disposed on the left serrated portion (2aa); the right blade (2b) includes a right serrated portion (2ba) and a right blade tip (2bb) disposed on the right serrated portion (2ba); the left serrated portion (2aa) and the right serrated portion (2ba) have the same structure; the left blade tip (2ab) and the right blade tip (2bb) are alternately arranged in a left-right-right sequence.

5. The circular saw blade for cutting foamed materials according to claim 1, characterized in that, Stress lines (5) are provided between the arc-shaped annular hole and the circular hole (3).

6. The circular saw blade for cutting foamed materials according to claim 4, characterized in that, The diameter of the saw blade substrate (1) ranges from 600 to 1200 mm, and the thickness of the saw blade substrate (1) ranges from 3 to 8 mm.

7. The circular saw blade for cutting foamed materials according to claim 6, characterized in that, The central angle corresponding to the arc surface of the arc-shaped waist hole (4) is in the range of 3 to 6°, and the width of the arc-shaped waist hole (4) is in the range of 20 to 30 mm; in the arc-shaped hole ring, the central angle corresponding to the interval area between adjacent arc-shaped waist holes (4) is in the range of 3 to 5°.

8. The circular saw blade for cutting foamed materials according to claim 6, characterized in that, The acute angle between the plane containing the cutting edge of the left blade (2a) and the plane containing the saw blade base (1) ranges from 15 to 20°.

9. The circular saw blade for cutting foamed materials according to claim 6, characterized in that, The thickness of the left-hand cutting head (2ab) and the right-hand cutting head (2bb) is greater than the thickness of the saw blade base (1).

10. The circular saw blade for cutting foamed materials according to claim 6, characterized in that, The gap area between each of the blades (2) is a chip groove (6), and the distance between the arc-shaped waist hole (4) near the blade (2) and the bottom of the chip groove (6) ranges from 15 to 30 mm.

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