Blade body, pruning machine

Abstract

The application relates to the technical field of garden pruning tools, in particular to a blade body and a pruning machine, wherein the blade body comprises an upper blade back, a lower blade back, a blade edge and a blade surface connecting the blade back and the blade edge; and the blade edge is provided with an arc-shaped recess at a blade root part close to the blade body. In order to avoid the shearing object from escaping from the blade edge during shearing, the application is provided with the arc-shaped recess at the blade root part on the basis of the traditional blade body structure, which can limit the shearing object to a certain extent and facilitate the application of shearing force; on the other hand, the shearing object is closer to the torque center of the blade body, and the demand for shearing force is lower than that of the traditional blade body structure.

Description

Technical Field

[0001] This application relates to the field of garden pruning tools, and in particular to a blade body and a pruning machine. Background Technology

[0002] A pruning machine is a common garden pruning tool, mainly used for shaping fruit trees, thinning branches, and harvesting. A pruning machine generally consists of a moving blade and a support blade. When pruning branches, the moving blade performs the cutting action, while the support blade provides support. The branches are cut by the interlocking of the moving and support blades. However, the smooth cutting edge of traditional blades has too small a contact surface when cutting round or irregular branches, resulting in insufficient friction and causing the branches to rotate and slip. This is especially true when the cutting diameter exceeds the optimal matching range of the blade's curvature, where the mechanical line contact cannot form an effective constraint.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0004] The purpose of this application is to provide a blade body and a pruning machine to solve or alleviate the problems existing in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution: A blade body, The blade body includes a back blade, a cutting edge, and a blade surface connecting the back blade and the cutting edge, which are arranged opposite each other. The blade has an arc-shaped indentation at the root of the blade near the blade body.

[0006] Preferably, the cutting angle of the blade gradually increases from the root of the blade body to the tip of the blade body.

[0007] Preferably, the cutting surface includes a first cutting surface and a second cutting surface; The first cutting surface includes a first straight surface and a first cutting edge from top to bottom, and the second cutting surface includes a second straight surface and a second cutting edge from top to bottom; the tops of the first straight surface and the second straight surface are respectively connected to the left and right sides of the back of the blade, and the bottoms of the first cutting edge and the second cutting edge are connected to each other to form the blade edge.

[0008] Preferably, the angle between the first cutting surface and the vertical plane is smaller than the angle between the second cutting surface and the vertical plane, and the cutting line height of the first cutting surface is lower than the cutting line height of the second cutting surface.

[0009] Preferably, the angle between the first cutting surface and the vertical plane gradually increases from the root of the blade body to the tip of the blade body.

[0010] Preferably, the angle between the second cutting surface and the vertical plane gradually increases from the root of the blade body to the tip of the blade body.

[0011] Preferably, the second cutting surface further includes a transition surface for connecting the second straight surface and the second cutting edge, wherein the angle between the transition surface and the vertical plane is smaller than the angle between the second cutting edge and the vertical plane.

[0012] Preferably, the angle between the transition surface and the vertical plane remains constant from the root of the blade body to the tip of the blade body.

[0013] A pruning machine includes a movable blade and a fixed blade, wherein the movable blade or the fixed blade adopts a blade body as described above.

[0014] Preferably, the moving blade adopts a blade body as described above.

[0015] Compared with the closest prior art, the technical solution of this application has the following beneficial effects: To prevent the object being cut from slipping off the blade during shearing, this application incorporates an arc-shaped recess at the blade root, based on the traditional blade body structure. This recess serves two purposes: firstly, it provides some restraint over the object being cut, facilitating the application of shearing force; secondly, it brings the object closer to the center of the blade body's torque, resulting in a lower requirement for shearing force compared to the traditional blade body structure. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein: Figure 1 This is a schematic diagram of a blade body structure according to some embodiments of this application; Figure 2 for Figure 1 Schematic diagram of the AA section; Figure 3 for Figure 1 Schematic diagram of the BB cross section; Figure 4 This is a schematic diagram of the operation of a pruning machine according to some embodiments of this application.

[0017] Explanation of reference numerals in the attached figures: 1. Back of the blade; 2. Blade edge; 3. Blade tip; 4. Blade root; 5. First straight surface; 6. First cutting edge; 7. Second straight surface; 8. Second cutting edge; 9. Transition surface; 10. Connecting part; 11. Fixed blade; 12. Moving blade; 13. Branch; 14. Blade line. Detailed Implementation

[0018] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0019] In the following description, the terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to limit this disclosure.

[0021] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; direct connections or indirect connections through intermediate components; wired connections, radio connections, or wireless communication signal connections. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] The following will be combined with the appendix Figure 1-4 The present application provides a further detailed description of a blade body and a pruning machine.

[0023] A blade body; The blade body includes a back 1 and a cutting edge 2 arranged opposite to each other, and a blade surface connecting the back 1 and the cutting edge 2; The blade 2 has an arc-shaped recess at the root 4 near the blade body.

[0024] In specific embodiments of this application, in conjunction with the appendix Figure 1-3As shown, the back of the blade 1 and the blade edge 2 extend from the top and bottom of the root of the blade 4 toward the tip of the blade 3, and converge at the tip of the blade 3; the left and right sides of the back of the blade 1 gradually contract inward from the top of the root of the blade 4 toward the tip of the blade 3, until the back of the blade 1 contracts to the position of the tip of the blade 3; the blade edge 2 is provided with arc-shaped depressions and arc-shaped protrusions in sequence from the bottom of the root of the blade 4 to the tip of the blade 3, and the blade edge 2 as a whole has a smooth wave-shaped curve extending upward from the bottom of the root of the blade 4 to the tip of the blade 3.

[0025] To prevent the object being cut from slipping off the blade 2 during shearing, this application provides an arc-shaped recess at the blade root 4, based on the traditional blade body structure. On the one hand, this can limit the object being cut to a certain extent, making it easier to apply shearing force; on the other hand, it also brings the object being cut closer to the center of the blade body's torque, thus requiring less shearing force compared to the traditional blade body structure.

[0026] The cutting angle of the blade 2 gradually increases from the root 4 of the blade body to the tip 3 of the blade body. On the one hand, this allows the force on the blade 2 during the cutting process to be gradually distributed along the direction of the blade 2, avoiding stress concentration, thereby improving the overall strength and durability of the blade 2 and reducing the risk of the blade 2 chipping or breaking. On the other hand, although a smaller cutting angle makes it easier to cut into the object, it is also easier to be clamped or jammed by the object. The blade 2 at the arc-shaped concave part first cuts into the object, and then the gradually increasing cutting angle is used to distribute the cutting force, which makes the shearing process smoother.

[0027] In specific embodiments of this application, in conjunction with the appendix Figure 1-3 As shown, the cutting edge angle of blade 2 at section AA is 30°, and the cutting edge angle of blade 2 at section BB is 42°. Section AA is located at the arc-shaped concave part of blade 2, and section BB is located at the arc-shaped convex part of blade 2.

[0028] The cutting surface includes a first cutting surface and a second cutting surface; The first cutting surface includes a first straight surface 5 and a first cutting edge 6 from top to bottom, and the second cutting surface includes a second straight surface 7 and a second cutting edge 8 from top to bottom; the tops of the first straight surface 5 and the second straight surface 7 are respectively connected to the left and right sides of the back of the blade 1, and the bottoms of the first cutting edge 6 and the second cutting edge 8 are connected to each other to form the blade 2.

[0029] In specific embodiments of this application, in conjunction with the appendix Figure 1-3 As shown, the first straight surface 5 and the second straight surface 7 are both set along the vertical direction of the tree branch 13, and the first cutting surface 6 and the second cutting surface 8 are both inclined inward along the vertical direction until they are connected to each other.

[0030] Compared to the traditional blade body structure, this application also provides a first cutting surface 6 below the first straight surface 5, which corresponds to the second cutting surface 8, in order to balance the squeezing force exerted by the object being cut on the second cutting surface 8 during the cutting process, and to avoid displacement, deformation, or poor use of the blade body, which would affect subsequent normal use.

[0031] The angle between the first cutting surface 6 and the vertical plane is smaller than the angle between the second cutting surface 8 and the vertical plane. The height of the cutting line 14 of the first cutting surface 6 is lower than the height of the cutting line 14 of the second cutting surface 8, so as to reduce the impact on the flatness of the shearing surface while meeting the requirements of balancing the blade body.

[0032] In specific embodiments of this application, in conjunction with the appendix Figure 1-3 As shown, at section AA, the angle between the first cutting surface 6 and the vertical plane is 12°, and the angle between the second cutting surface 8 and the vertical plane is 18°; at section BB, the angle between the first cutting surface 6 and the vertical plane is 18°, and the angle between the second cutting surface 8 and the vertical plane is 24°.

[0033] The angle between the first cutting surface 6 and the vertical plane gradually increases from the root 4 of the blade body to the tip 3 of the blade body.

[0034] In specific embodiments of this application, in conjunction with the appendix Figure 1-3 As shown, the angle between the first cutting edge 6 and the vertical plane at section AA is 12°, and the angle between the first cutting edge 6 and the vertical plane at section BB is 18°; the distance between the cutting line 14 of the first cutting edge 6 and the bottom of the blade 2 gradually decreases.

[0035] The angle between the second cutting surface 8 and the vertical plane gradually increases from the root 4 of the blade body to the tip 3 of the blade body.

[0036] In specific embodiments of this application, in conjunction with the appendix Figure 1-3 As shown, the angle between the second cutting edge 8 and the vertical plane at section AA is 18°, and the angle between the second cutting edge 8 and the vertical plane at section BB is 24°; the distance between the cutting line 14 of the second cutting edge 8 and the bottom of the blade 2 gradually decreases.

[0037] In other embodiments of this application, while ensuring that the cutting angle of the blade 2 gradually increases from the root 4 of the blade body to the tip 3 of the blade body, the angle between the first cutting surface 6 and the vertical plane gradually increases from the root 4 of the blade body to the tip 3 of the blade body, while the angle between the second cutting surface 8 and the vertical plane remains unchanged or gradually decreases from the root 4 of the blade body to the tip 3 of the blade body; or, while the angle between the second cutting surface 8 and the vertical plane gradually increases from the root 4 of the blade body to the tip 3 of the blade body, the angle between the first cutting surface 6 and the vertical plane remains unchanged or gradually decreases from the root 4 of the blade body to the tip 3 of the blade body.

[0038] The second cutting surface also includes a transition surface 9 for connecting the second straight surface 7 and the second cutting surface 8. The angle between the transition surface 9 and the vertical plane is smaller than the angle between the second cutting surface 8 and the vertical plane, so as to reduce the extrusion force exerted by the shearing object on the second cutting surface while reducing the material used in the blade body, thereby further improving the shearing smoothness.

[0039] In specific embodiments of this application, in conjunction with the appendix Figure 1-3 As shown, at section AA, the angle between the transition surface 9 and the vertical plane is 12°, and the angle between the second cutting surface 8 and the vertical plane is 18°; at section BB, the angle between the transition surface 9 and the vertical plane is 12°, and the angle between the second cutting surface 8 and the vertical plane is 24°.

[0040] The angle between the transition surface 9 and the vertical plane remains constant from the root 4 of the blade body to the tip 3 of the blade body, in order to reduce the difficulty of machining.

[0041] In specific embodiments of this application, in conjunction with the appendix Figure 1-3 As shown, the angle between the transition surface 9 at section AA and section BB and the vertical plane is 12°.

[0042] A pruning machine includes a movable blade 12 and a fixed blade 11, wherein the movable blade 12 or the fixed blade 11 adopts any of the blade bodies described above.

[0043] In a specific embodiment of this application, the moving blade 12 or the fixed blade 11 adopts any of the blade bodies described above. The power mechanism is sequentially installed in the connection part 10 of the moving blade 12 and the fixed blade 11. The power mechanism is used to drive the moving blade 12 to move. The fixed blade 11 also includes a fixing part, which is used to control the fixed blade 11 to remain stationary.

[0044] The moving blade 12 adopts any of the blade bodies mentioned above.

[0045] In specific embodiments of this application, in conjunction with the appendix Figure 4 As shown, the second cutting surface 8 is located on the side away from the fixed blade 11, and the first cutting surface 6 is located on the side close to the fixed blade 11. During the actual cutting operation, the branch 13 is set in the arc-shaped recess of the blade body of the moving blade 12. The power mechanism drives the moving blade 12 to rotate towards the fixed blade 11, and the moving blade 12 and the fixed blade 11 work together to cut the branch 13.

[0046] In other embodiments of this application, the fixed blade 11 adopts any of the blade bodies described above, the second cutting surface 8 is located on the side away from the moving blade 12, and the first cutting surface 6 is located on the side close to the moving blade 12.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A blade body, characterized in that, The blade body includes a back blade, a cutting edge, and a blade surface connecting the back blade and the cutting edge, which are arranged opposite each other. The blade has an arc-shaped indentation at the root of the blade near the blade body.

2. The blade body as described in claim 1, characterized in that, The blade angle gradually increases from the root of the blade body to the tip of the blade body.

3. The blade body as described in claim 2, characterized in that, The cutting surface includes a first cutting surface and a second cutting surface; The first cutting surface includes a first straight surface and a first cutting edge from top to bottom, and the second cutting surface includes a second straight surface and a second cutting edge from top to bottom; the tops of the first straight surface and the second straight surface are respectively connected to the left and right sides of the back of the blade, and the bottoms of the first cutting edge and the second cutting edge are connected to each other to form the blade edge.

4. A blade body as described in claim 3, characterized in that, The angle between the first cutting edge and the vertical plane is smaller than the angle between the second cutting edge and the vertical plane, and the cutting line height of the first cutting edge is lower than the cutting line height of the second cutting edge.

5. A blade body as described in claim 4, characterized in that, The angle between the first cutting surface and the vertical plane gradually increases from the root of the blade body to the tip of the blade body.

6. A blade body as described in claim 4, characterized in that, The angle between the second cutting surface and the vertical plane gradually increases from the root of the blade body to the tip of the blade body.

7. A blade body as described in claim 3, characterized in that, The second cutting surface also includes a transition surface for connecting the second straight surface and the second cutting surface, wherein the angle between the transition surface and the vertical plane is smaller than the angle between the second cutting surface and the vertical plane.

8. A blade body as described in claim 7, characterized in that, The angle between the transition surface and the vertical plane remains constant from the root of the blade body to the tip of the blade body.

9. A pruning machine, characterized in that, It includes a moving blade and a fixed blade, wherein the moving blade or the fixed blade adopts the blade body described in any one of claims 1-8.

10. A pruning machine as described in claim 9, characterized in that, The moving blade adopts the blade body described in any one of claims 1-8.

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