A combined wood barker blade

Abstract

The utility model relates to the technical field of blade, concretely is a kind of compound wood barker blade, it includes: blade body includes handle and blade body, the tangent blade of blade body front side is connected with handle is provided, the side cutting edge of blade body side is connected with tangent blade is provided, the outer edge of blade body is provided with outer blade, and the intersection of outer blade and side cutting edge is provided with sharp blade part;Beneficial effect is: the utility model provides a kind of compound wood barker blade, through the synergic design of bending knife type overall structure cooperation guide groove, the optimization of cutting locus and chip removal path is realized, the problem of wood surface being easily torn, insufficient degree of finish in peeling process is solved, through the composite cutting mechanism of tangent blade, side cutting edge and sharp blade part, the division of labour and efficient cutting of trunk peeling and branch cleaning are realized, the problem that traditional single blade edge is difficult to consider large-area peeling and local stubborn impurity cleaning simultaneously is solved.

Description

Technical Field

[0001] This utility model relates to the field of blades, specifically a composite wood peeling machine blade. Background Technology

[0002] Composite wood debarking machines are key pieces of equipment in modern wood processing. They utilize a high-speed rotating rotor equipped with multiple blades to continuously impact and cut the logs, efficiently removing the bark. This equipment is widely used in industries requiring large quantities of wood raw materials, such as papermaking and engineered wood products. Its processing efficiency and effectiveness directly impact the cost and quality of subsequent production.

[0003] In existing technologies, debarking machine blades mostly employ a curved cutting edge design to better conform to the natural contours of the log. In actual operation, the surface of logs is typically rich in resin and the wood tissue has a high moisture content. During high-speed cutting, the blade generates localized, instantaneous high temperatures due to intense friction, causing the natural resins in the wood to melt and significantly increase their viscosity. Under the high-temperature, high-pressure cutting environment, these viscous resins readily mix with the cut, moist sawdust, forming a highly adhesive complex.

[0004] However, traditional wood peeling machine blades have significant limitations when dealing with the above-mentioned complex working conditions. Conventional blades have limited effectiveness in breaking chips and guiding the discharge of wood chips and resin, making it difficult to simultaneously and efficiently handle the tasks of peeling tree trunks and cleaning tree branch knots. Therefore, this utility model proposes a composite wood peeling machine blade to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a composite wood peeling machine blade to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite wood peeling machine blade, comprising: a blade body including a handle and a blade body, wherein a tangent blade connected to the handle is provided on the front side of the blade body, a side cutting blade connected to the tangent blade is provided on the side of the blade body, an outer edge is provided on the outer edge of the blade body, a pointed edge is provided at the intersection of the outer edge and the side cutting blade, and a back edge is provided on the rear side of the blade body.

[0007] Preferably, the blade surface is provided with a plurality of flow guide grooves, the flow guide grooves are wavy grooves, and the flow guide grooves extend perpendicular to the tangential cutting edge.

[0008] Preferably, the blade surface near the back of the blade has several buffer grooves, and the buffer grooves are generally elliptical in shape.

[0009] Preferably, a reinforcing rib is provided at the junction of the handle and the blade, and the reinforcing rib is rectangular in shape.

[0010] Preferably, the surface of the tool holder has a mounting hole, and the side of the mounting hole has a positioning groove.

[0011] Preferably, the blade body is curved and the surface of the blade body is provided with an anti-stick coating.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The composite wood peeling machine blade proposed in this utility model optimizes the cutting trajectory and chip removal path through the coordinated design of the curved blade-shaped integral structure and the guide groove. It solves the problems of easy tearing and insufficient smoothness of the wood surface during the peeling process. Through the composite cutting mechanism composed of the front cutting blade, the side cutting blade and the tip blade, it realizes the division of labor and efficient cutting for peeling the trunk and cleaning the branches. It solves the problem that the traditional single blade is difficult to handle both large-area peeling and local stubborn impurity cleaning. 2. The composite wood peeling machine blade proposed in this utility model achieves effective guidance, breaking and directional throwing of viscous wood chip and resin mixture through the wave-shaped guide groove set on the blade surface, solving the problem of easy adhesion and clogging of wet long fiber materials. Through the elliptical buffer groove set on the back of the blade, the cutting stress is effectively guided and dispersed, solving the problem of fatigue cracks caused by stress concentration in the blade body, and significantly improving the service life of the blade. 3. The composite wood peeling machine blade proposed in this utility model significantly enhances the structural rigidity of key connection parts by setting a rectangular reinforcing rib at the connection between the handle and the blade body, thus solving the problem that the blade is prone to deformation or breakage under high-speed and high-load conditions. Attached Figure Description Figure 1 This is a first-view schematic diagram of the structure of this utility model; Figure 2 This is a second-view schematic diagram of the structure of this utility model; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle.

[0013] In the diagram: 1. Blade body; 2. Handle; 3. Blade blade; 4. Front cutting edge; 5. Side cutting edge; 6. Outer cutting edge; 7. Tip cutting edge; 8. Back of the blade; 9. Guide groove; 10. Buffer groove; 11. Reinforcing rib; 12. Mounting hole; 13. Positioning groove. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit 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.

[0015] Example 1: Please refer to Figures 1-2 This utility model provides a technical solution: a composite wood peeling machine blade, comprising: a blade body 1 including a handle 2 and a blade 3, wherein a front cutting edge 4 connected to the handle 2 is provided on the front side of the blade 3, and a side cutting edge 5 connected to the front cutting edge 4 is provided on the side of the blade 3. The side cutting edge 5 on the side of the blade 3 first cuts into the wood surface to cut off and clean the small branches and knots covering the surface of the log, and the front cutting edge 4 then cuts in to peel the bark of the main trunk in a large area with high efficiency. An outer cutting edge is provided on the outer edge of the blade 3. 6. A pointed edge 7 is provided at the intersection of the outer cutting edge 6 and the side cutting edge 5. A blade back 8 is provided on the rear side of the blade body 3. Several guide grooves 9 are provided on the surface of the blade body 3. The guide grooves 9 are wavy grooves. The extension direction of the guide grooves 9 is perpendicular to the tangential cutting edge 4. The wavy groove of the guide groove 9 has better hydrodynamic performance when the material passes through, which can further reduce resistance. Several buffer grooves 10 are provided on the surface of the blade body 3 near the blade back 8. The buffer grooves 10 are generally elliptical. The elliptical outline structurally reduces the peak stress of the concave angle at the connection between the tangential cutting edge 4 and the side cutting edge 5 on the side of the blade body 3.

[0016] First, when the composite wood peeling machine starts working, the blade body 1 rotates at high speed under the drive of the peeling machine. The side cutting edge 5 on the side of the blade 3 first cuts into the wood surface to cut off and clean the small branches and knots covering the surface of the log, using its inclined angle to tear and pry open the bark. Then, the front cutting edge 4 on the front side of the blade 3 cuts in to peel off the bark of the main trunk in a large area with high efficiency, cutting and peeling off the bark that has been damaged by the side cutting edge 5. During this process, the pointed edge 7 located at the intersection of the outer edge of the blade 3 and the side cutting edge 5 can easily penetrate and cut through tough or uneven bark, creating a breakthrough for subsequent cutting. This achieves the division of labor and efficient cutting for peeling the trunk and cleaning the branches, solving the problem that traditional single-edge blades cannot handle both large-area peeling and cleaning of stubborn impurities.

[0017] Under high-speed cutting, the resulting strips or blocks of bark chips and wood fibers are subjected to tremendous centrifugal force. At this point, the wavy guide groove 9 on the surface of the blade 3 plays a crucial role. The wet wood chips and resin mixture adhering to the surface of the blade 3 are thrown into the guide groove 9 under the drive of centrifugal force. Because the guide groove 9 extends perpendicular to the tangential cutting edge 4, the cutting material can be ejected along the most direct path, resulting in stronger chip breaking and anti-adhesion effects, effectively preventing the bark from sliding and enveloping longitudinally. The wavy shape of the guide groove 9 also provides superior hydrodynamic performance when the material passes through, further reducing resistance.

[0018] Meanwhile, when the blade body 1 is subjected to severe and periodic impact loads during the cutting of wood, stress will be transmitted and accumulated inside the blade body 3. The elliptical buffer groove 10 serves as a stress guiding groove. The elliptical contour structurally reduces the peak stress at the concave angle where the tangential edge 4 and the side cutting edge 5 on the side of the blade body 3 are connected, thus avoiding excessive stress concentration in weak areas and minimizing the local high stress level that may lead to fatigue cracking of the blade body 1.

[0019] Example 2: Based on Example 1, please refer to... Figures 3-4 The handle 2 and the blade 3 are symmetrically provided with reinforcing ribs 11 at the connection point, which cleverly changes the shape of the cross section at the connection point of the handle 2 and the blade 3. The reinforcing ribs 11 are rectangular in shape, which effectively prevents fatigue cracks from occurring at stress concentration points. The handle 2 has a mounting hole 12 on its surface and a positioning groove 13 on the side of the mounting hole 12. The blade body 1 is curved and has an anti-stick coating on its surface.

[0020] Throughout the entire process, the blade body 1 is subjected to severe impact and torsional stress from the wood. Rectangular reinforcing ribs 11, symmetrically arranged at the junction of the handle 2 and the blade 3, cleverly alter the cross-sectional shape by increasing the material thickness at the junction of the handle 2 and the blade 3. This significantly increases the moment of inertia of the blade body 1 under load, providing strong structural support for the entire blade, evenly distributing stress, effectively preventing fatigue cracks at stress concentration points, and ensuring the blade's service life under long-term harsh working conditions.

[0021] Meanwhile, the curved blade-shaped integral structure of the blade body 1 allows it to better conform to the natural curvature of the wood during rotation, achieving a smooth cutting transition. This streamlined shape also reduces air resistance during high-speed movement. Under centrifugal force, the peeled bark and debris discharged through the guide groove 9 are smoothly thrown out along the curved surface of the blade body 3 in the tangential direction. Through the coordinated design of the curved blade-shaped integral structure and the guide groove, the cutting trajectory and chip removal path are optimized, enabling efficient automatic chip removal. The mounting holes 12 and positioning grooves 13 on the surface of the handle 2 ensure the mounting rigidity and dynamic balance of the blade under high-speed rotation, which is the basis for stable movement.

[0022] In addition, the blade 3 is made of high-speed steel to ensure that it can maintain its sharpness for a long time. The anti-stick coating on the surface of the blade body 1 is usually made of Teflon to reduce the adhesion of resin and wood chips, which makes the subsequent physical chip removal through structures such as the guide groove 9 and the buffer groove 10 more thorough.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite wood peeling machine blade, characterized in that: The blade body (1) includes a handle (2) and a blade (3). The front side of the blade (3) is provided with a tangent (4) connected to the handle (2). The side side of the blade (3) is provided with a side cutting edge (5) connected to the tangent (4). The outer edge of the blade (3) is provided with an outer blade (6). A pointed edge (7) is provided at the intersection of the outer blade (6) and the side cutting edge (5). The back of the blade (3) is provided with a blade back (8).

2. The composite wood peeling machine blade according to claim 1, characterized in that: The blade (3) has several guide grooves (9) on its surface. The guide grooves (9) are wavy grooves and extend perpendicularly to the tangential blade (4).

3. The composite wood peeling machine blade according to claim 1, characterized in that: The blade (3) has several buffer grooves (10) on its surface near the back of the blade (8), and the buffer grooves (10) are generally elliptical.

4. The composite wood peeling machine blade according to claim 1, characterized in that: A reinforcing rib (11) is provided at the junction of the handle (2) and the blade (3), and the reinforcing rib (11) is rectangular in shape.

5. The composite wood peeling machine blade according to claim 1, characterized in that: The tool holder (2) has a mounting hole (12) on its surface and a positioning groove (13) on its side.

6. The composite wood peeling machine blade according to claim 1, characterized in that: The blade body (1) is curved, and the surface of the blade body (1) is provided with an anti-stick coating.

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