Chipping machine fly-cutter roller convenient to dissipate heat

Abstract

The utility model relates to the field of chipping machines, and discloses a chipping machine fly-cutter roller convenient for heat dissipation, which comprises a fly-cutter roller body, the fly-cutter roller body is of a hollow structure, a through cooling pipe is arranged in the fly-cutter roller body, a spiral blade is arranged on the peripheral surface of the fly-cutter roller body, a heat dissipation groove and heat dissipation holes are processed on the surface of the blade, and the heat dissipation groove and the heat dissipation holes are communicated with the fly-cutter roller body. And the heat dissipation grooves are distributed along the axial direction of the fly-cutter roller body. According to the chipping machine fly-cutter roller facilitating heat dissipation, the fly-cutter roller body is arranged, heat dissipation grooves and heat dissipation holes are formed in the surfaces of the blades, the heat dissipation grooves are used for rapidly guiding out radial heat generated in a contact area in the cutting process of the blades, the heat dissipation holes are used for dissipating axial heat to the outside in time, and the cooling pipe is arranged in the fly-cutter roller body; the cooling liquid circularly flows in the cooling pipe, heat of the hollow cavity is taken away, inner and outer water cooling combined heat dissipation of the roller body is achieved, and the problems that in the long-time chipping operation process of a traditional chipping machine, a fly cutter roller is prone to heating, and a blade is prone to thermal expansion are solved.

Description

Technical Field

[0001] This utility model relates to the field of chipper technology, specifically to a chipper fly knife roller that facilitates heat dissipation. Background Technology

[0002] Chippers are essential pieces of equipment widely used in industries such as wood processing, papermaking, and board manufacturing. The fly knife roller, as the core cutting component, rotates at high speed to cut wood, turning logs, branches, or waste wood into chips of a specific size. Currently available chipper fly knife rollers generate significant heat during high-intensity operation due to the high-speed friction between the blades and the wood. This heat cannot be dissipated quickly enough, causing a rapid rise in overall temperature. This can lead to blade expansion and deformation, dulling of the cutting edges, and affect the dimensional accuracy and surface quality of the chips. In severe cases, it can even cause equipment shutdown or damage. Therefore, there is an urgent need for a fly knife roller for chippers with improved heat dissipation to address these technical shortcomings. Utility Model Content

[0003] The purpose of this invention is to provide a fly knife roller for a chipper that facilitates heat dissipation, in order to solve the problems mentioned in the background art of the fly knife roller overheating and blade thermal expansion during long-term cutting operation of the chipper.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fly knife roller for a chipper that facilitates heat dissipation, comprising a fly knife roller body, wherein the fly knife roller body has a hollow structure and a through cooling pipe is provided inside, and a spiral blade is provided on the outer peripheral surface of the fly knife roller body, wherein heat dissipation grooves and heat dissipation holes are machined on the surface of the blades, the heat dissipation grooves are aligned and distributed along the axial direction of the fly knife roller body, and one end of the cooling pipe is a water inlet and the other end is a water outlet.

[0005] As a further technical solution of this utility model, multiple flow tubes are welded along the axial direction inside the cooling pipe.

[0006] As a further technical solution of this utility model, the flying knife roller body has multiple sets of crushing stones evenly distributed along its axial direction, and the crushing stones are made of high manganese steel.

[0007] As a further technical solution of this utility model, positioning sleeves are welded to both inner walls of the flying knife roller body, and anti-rotation grooves are machined on the inner walls of the positioning sleeves. Inner flanges are provided on both sides of the flying knife roller body, and outer fixing plates are fixedly connected to the inner flanges. Inner bolts are fixedly connected between the inner flanges and the outer fixing plates.

[0008] As a further technical solution of this utility model, the side wall of the outer fixing plate is provided with a connecting shaft, the side wall of the connecting shaft is machined with an anti-rotation key, and the connecting shaft is fitted and inserted into both sides of the flying knife roller body.

[0009] As a further technical solution of this utility model, a bearing seat is fixedly connected to the outer side of the outer fixing plate and the chipper body installation position, and the flying knife roller body is movably assembled to the chipper body through the bearing seat.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the heat dissipation-friendly flying knife roller for chippers not only achieves heat dissipation through a combination of internal and external water cooling, thus improving the overall heat dissipation balance, but also achieves modular design, which facilitates maintenance;

[0011] (1) By setting up a flying knife roller body, blades, crushing stones, heat dissipation holes, heat dissipation grooves, and cooling pipes, the blade surface is provided with heat dissipation grooves and heat dissipation holes. The heat dissipation grooves are processed radially along the flying knife roller body to quickly dissipate the radial heat generated in the contact area during the blade cutting process. The heat dissipation holes are arranged axially to dissipate the axial heat to the outside in a timely manner. Cooling pipes are set inside the flying knife roller body, and the coolant circulates inside the cooling pipes to carry away the heat of the hollow cavity. This achieves a combination of internal and external water cooling for heat dissipation, which solves the problem of the flying knife roller easily overheating and the blade thermal expansion during long-term cutting operation of traditional chippers, and improves the overall operating stability and blade service life.

[0012] (2) By setting up cooling pipes and distribution pipes, multiple distribution pipes are welded axially inside the cooling pipes. Coolant is injected from the inlet. After the coolant enters the cooling pipe, it is guided and diffused by the multiple distribution pipes, thereby avoiding water pressure fluctuation caused by the concentrated impact of the coolant on the end of the pipe at one time. The distribution pipes realize the uniform distribution of liquid flow, enhance the heat exchange efficiency with the inner wall of the flying knife roller body, improve the overall heat dissipation balance, and thus improve the water cooling circulation effect.

[0013] (3) The flying knife roller body is equipped with inner bolts, inner flanges, anti-rotation keys, outer fixing plates, bearing seats, connecting shafts, positioning sleeves, and anti-rotation grooves. Inner flanges are set on both sides of the flying knife roller body. The outer fixing plates are fixedly connected by inner bolts. The outer fixing plate side wall is connected to the shaft. The outer wall of the connecting shaft is machined with anti-rotation keys, which are fitted and locked with the anti-rotation grooves. The outer side of the outer fixing plate is fixed to the bearing seat. The flying knife roller body is movably assembled to the chipper body through the bearing seat. The modular design, combined with the anti-rotation keys and anti-rotation grooves, restricts rotational displacement and facilitates equipment maintenance. Attached Figure Description

[0014] Figure 1 This is a disassembly diagram of the present invention;

[0015] Figure 2 This is a front view structural diagram of the present utility model;

[0016] Figure 3 For the present utility model Figure 2 Enlarged cross-sectional view of a portion of point A in the middle section;

[0017] Figure 4 This is a schematic diagram of the diversion tube structure of this utility model.

[0018] In the diagram: 1. Flying knife roller body; 2. Blade; 3. Crushing stone; 4. Heat dissipation hole; 5. Heat dissipation groove; 6. Inner bolt; 7. Inner flange; 8. Anti-rotation key; 9. Outer fixing plate; 10. Bearing seat; 11. Connecting shaft; 12. Positioning sleeve; 13. Anti-rotation groove; 14. Cooling pipe; 15. Water inlet; 16. Water outlet; 17. Diverter pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 The present invention provides an embodiment of a chipper fly knife roller that facilitates heat dissipation, comprising a fly knife roller body 1, wherein the fly knife roller body 1 is a hollow structure and a through cooling pipe 14 is provided inside. The outer peripheral surface of the fly knife roller body 1 is provided with a spiral blade 2, and the surface of the blade 2 is machined with heat dissipation grooves 5 and heat dissipation holes 4. The heat dissipation grooves 5 are aligned and distributed along the axial direction of the fly knife roller body 1. One end of the cooling pipe 14 is a water inlet 15 and the other end is a water outlet 16.

[0021] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the blade 2 has heat dissipation grooves 5 and heat dissipation holes 4 on its surface. The heat dissipation grooves 5 are machined radially along the fly cutter roller body 1 to quickly dissipate the radial heat generated in the contact area during the cutting process of the blade 2. The heat dissipation holes 4 are arranged axially to dissipate the axial heat to the outside in a timely manner. The fly cutter roller body 1 is provided with a cooling pipe 14 inside. The cooling pipe 14 is provided with an inlet 15 and an outlet 16 at both ends. Coolant is introduced through the inlet 15. The coolant circulates inside the cooling pipe 14 to carry away the heat of the hollow cavity, realizing a combination of axial cooling and internal water cooling of the roller body.

[0022] Multiple streams 17 are welded along the axial direction inside the cooling pipe 14, and multiple sets of crushing stones 3 are evenly distributed along the axial direction of the flying knife roller body 1. The crushing stones 3 are made of high manganese steel.

[0023] Specifically, such as Figure 1 and Figure 4As shown, multiple diversion pipes 17 are welded axially inside the cooling pipe 14. Coolant is injected from the inlet 15. After entering the cooling pipe 14, the coolant is guided and diffused by the multiple diversion pipes 17, thereby avoiding water pressure fluctuations caused by the concentrated impact of the coolant on the end of the pipe at one time. The diversion pipes 17 achieve uniform liquid flow and enhance the heat exchange efficiency with the inner wall of the flying knife roller body 1.

[0024] The two inner walls of the flying knife roller body 1 are welded with positioning sleeves 12. The inner wall of the positioning sleeves 12 is machined with anti-rotation grooves 13. The two sides of the flying knife roller body 1 are provided with inner flanges 7. The inner flanges 7 are fixedly connected with outer fixing plates 9. The inner flanges 7 and the outer fixing plates 9 are fixedly connected with inner bolts 6. The side wall of the outer fixing plate 9 is provided with a connecting shaft 11. The side wall of the connecting shaft 11 is machined with anti-rotation keys 8. The connecting shaft 11 is fitted and inserted into the two sides of the flying knife roller body 1. The outer side of the outer fixing plate 9 is fixedly connected with the chipper body installation position with a bearing seat 10. The flying knife roller body 1 is movably assembled to the chipper body through the bearing seat 10.

[0025] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the fly knife roller body 1 has inner flanges 7 on both sides, which are fixedly connected to the outer fixing plate 9 by inner bolts 6. The outer fixing plate 9 has a connecting shaft 11 on its side wall. The outer wall of the connecting shaft 11 is machined with an anti-rotation key 8, which fits and locks with the anti-rotation groove 13. The outer side of the outer fixing plate 9 is fixed to the bearing seat 10. The fly knife roller body 1 is movably assembled to the chipper body through the bearing seat 10. The anti-rotation key 8 and the anti-rotation groove 13 restrict the rotational displacement.

[0026] Working principle: The blade 2 has heat dissipation grooves 5 and heat dissipation holes 4 on its surface. The heat dissipation grooves 5 are machined radially along the fly cutter roller body 1 to quickly dissipate the radial heat generated in the contact area during the cutting process of the blade 2. The heat dissipation holes 4 are arranged axially to dissipate axial heat to the outside in a timely manner. The fly cutter roller body 1 is equipped with a cooling pipe 14. The cooling pipe 14 has an inlet 15 and an outlet 16 at both ends. Coolant is introduced through the inlet 15 and circulates inside the cooling pipe 14, carrying away the heat of the hollow cavity. This achieves a combination of axial cooling and internal water cooling of the roller body. Multiple diversion pipes 17 are welded axially at intervals inside the cooling pipe 14. Coolant is injected from the inlet 15. After entering the cooling pipe 14, the coolant is guided and diffused by the multiple diversion pipes 17, thereby avoiding water pressure fluctuations caused by a single concentrated impact of coolant on the end of the pipe. The diversion pipes 17 achieve uniform liquid flow, enhance the heat exchange efficiency with the inner wall of the fly cutter roller body 1, improve the overall heat dissipation balance, and thus improve the water cooling circulation effect.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heat-dissipating fly knife roller for a chipper, comprising a fly knife roller body (1), characterized in that: The flying cutter roller body (1) has a hollow structure and a through cooling pipe (14) is provided inside. The outer circumferential surface of the flying cutter roller body (1) is provided with a spiral blade (2). The surface of the blade (2) is machined with heat dissipation grooves (5) and heat dissipation holes (4). The heat dissipation grooves (5) are aligned and distributed along the axial direction of the flying cutter roller body (1). One end of the cooling pipe (14) is a water inlet (15) and the other end is a water outlet (16).

2. The fly knife roller for a chipper with convenient heat dissipation according to claim 1, characterized in that: Multiple flow tubes (17) are welded along the axial direction inside the cooling pipe (14).

3. The fly knife roller for a chipper with convenient heat dissipation according to claim 1, characterized in that: The flying knife roller body (1) has multiple sets of crushing stones (3) evenly distributed along its axial direction. The crushing stones (3) are made of high manganese steel.

4. A heat-dissipating fly knife roller for a chipper according to claim 1, characterized in that: The flying cutter roller body (1) has two inner walls welded with positioning sleeves (12), the inner walls of the positioning sleeves (12) are machined with anti-rotation grooves (13), the flying cutter roller body (1) has inner flanges (7) on both sides, the inner flanges (7) are fixedly connected with outer fixing plates (9), and the inner flanges (7) and outer fixing plates (9) are fixedly connected with inner bolts (6).

5. A heat-dissipating fly knife roller for a chipper according to claim 4, characterized in that: The outer fixing plate (9) has a connecting shaft (11) on its side wall. The connecting shaft (11) has an anti-rotation key (8) on its side wall. The connecting shaft (11) is fitted and inserted into both sides of the flying knife roller body (1).

6. A heat-dissipating fly knife roller for a chipper according to claim 4, characterized in that: The outer fixing plate (9) is fixedly connected to the chipper body installation position with a bearing seat (10), and the flying knife roller body (1) is movably assembled to the chipper body through the bearing seat (10).

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