A movable cutter for clearing bamboo partitions

Abstract

This invention discloses a movable blade for removing bamboo septum. The ingenious design features a blade structure with multiple movable blades movably connected to the outer periphery of the blade shank. Combined with elastic components, limiting components, and the cooperation of multiple movable blades and the blade shank, the movable blade can adapt to bamboo tubes with varying degrees of curvature. Each movable blade has an extension, which, when constrained by the limiting pins of the limiting components, prevents the blades from detaching or falling off. Each pair of elastic elements in the connecting groove on the blade shank corresponds to each movable blade. In this structure, the forces on each movable blade are independent. When the movable blade penetrates the bamboo tube, it adaptively moves within the connecting groove according to the external force it receives, i.e., it partially compresses into the connecting groove on the blade shank based on the external force, allowing the movable blade to better clean the bamboo septum from irregularly curved bamboo tubes.

Description

Technical Field

[0001] This invention relates to the field of bamboo processing tools, and more particularly to a movable tool for removing bamboo septa. Background Technology

[0002] Bamboo is widely used in many fields due to its low shrinkage and high tensile and compressive strength along the grain. However, the structural characteristics of bamboo mean that it requires pre-treatment processes such as removing internal bamboo septa and cutting before being processed into bamboo products. Since bamboo septa are located inside the bamboo tube, external auxiliary tools are often needed to penetrate the bamboo tube during processing to break or modify them, thus pre-treating the inside of the bamboo tube without damaging the main body. To improve processing efficiency and flexibility, many documents have disclosed solutions for assisting in the removal of bamboo septa and internal knots, and some bamboo septa cleaning tools are also commercially available. Among the disclosed documents, Chinese patent applications CN201710542600.4 and CN201921716857.8 both disclose a device for opening bamboo septa. For such devices, their… Bamboo often has high requirements for processing. For example, it is required that the bamboo body be straight. However, bamboo naturally has a certain degree of curvature. This makes it difficult for most of the devices currently available on the market or disclosed in the literature to adapt to bamboo with a certain degree of curvature, especially bamboo with continuous curvature. For example, when the bamboo body has irregular curvature, the device has difficulty penetrating into the bamboo tube or the travel is not ideal. It may also have poor cleaning effect on the bamboo septa inside the bamboo tube and low efficiency. Therefore, how to adapt to the internal structure of irregularly curved bamboo and balance processing efficiency and effect is a research topic with positive practical significance and industrial application value. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a movable tool for removing bamboo septa that is reliable in implementation, flexible in application, and can adapt to the internal structure of irregularly bent bamboo to a certain extent, so as to effectively clean the bamboo septa inside the bamboo.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this invention is as follows:

[0005] A movable blade for removing bamboo septa, used to penetrate into a bamboo tube to remove the bamboo septa inside, comprising:

[0006] Tool holder;

[0007] The movable blades are multiple and all are movably connected to the outer periphery of the blade holder;

[0008] A limiting component is connected to the tool holder and the plurality of movable blades, and the limiting component is used to prevent the movable blades from disengaging from the tool holder;

[0009] An elastic component is disposed on the blade holder and is connected to a plurality of the movable blades respectively; the elastic component is used to provide a repulsive force and has a first state and a second state in mutual cooperation with the movable blades;

[0010] In the first state, the repulsive force provided by the elastic component causes the movable blade to unfold in a direction away from the blade holder;

[0011] In the second state, the movable blade is subjected to an external force greater than the repulsive force, which compresses the elastic component and causes the movable blade to retract in a direction close to the blade holder.

[0012] As one possible implementation, the outer periphery of the tool holder in this solution is provided with a connecting groove corresponding to each of the multiple movable blades, and an extension is provided on one side of the middle part of each movable blade, the extension being movably inserted into the connecting groove corresponding to the movable blade.

[0013] As a preferred embodiment, the limiting component of this solution is connected in the connecting groove of the tool bar and cooperates with the extension of the movable blade to prevent the movable blade from disengaging from the tool bar.

[0014] As a preferred embodiment, the extension portion of this solution is preferably provided with a waist-shaped groove; the limiting component includes:

[0015] There are multiple limiting pins, and each of the multiple limiting pins corresponds to a connecting groove of the tool bar. The pins are inserted into the connecting groove and pass through the waist-shaped groove of the movable blade, so as to movably connect the movable blade to the tool bar.

[0016] As a preferred implementation method, the elastic component of this solution preferably includes:

[0017] The elastic element consists of multiple pairs, with each pair corresponding to a connecting groove on the tool holder. The pair of elastic elements corresponding to the connecting groove are respectively disposed at both ends of the connecting groove. One end of the elastic element is fixed in the connecting groove, and the other end abuts against the movable blade that is movably connected to the connecting groove, so that the movable blade is repelled by the elastic element and unfolds in a direction away from the tool holder.

[0018] As a preferred embodiment, the elastic element described in this solution is preferably a spring;

[0019] The length of the connecting groove is greater than the length of the movable blade, and the length of the extension beyond the middle of the movable blade is less than the depth of the connecting groove;

[0020] When the movable blade is extended away from the blade rod by the repulsive force of the elastic element, the other side of the movable blade is higher than the outer surface of the blade rod, and / or when the movable blade is subjected to an external force greater than the repulsive force, causing the movable blade to retract to its maximum extent in the direction close to the blade rod, the other side of the movable blade is higher than the outer surface of the blade rod.

[0021] As a preferred embodiment, the movable knife in this solution includes a knife body and a scraper. The extension is located in the middle of one side of the knife body, and the scraper is located on the other side of the knife body and is used to scrape the inner wall of the bamboo tube or the bamboo partition inside the bamboo tube.

[0022] As a preferred implementation, the multiple movable blades in this solution are divided into two groups, with each group having more than one movable blade. One group of movable blades is movably connected to the outer periphery of one end of the blade rod, which is designated as the movable front blade group. One end of the movable blades in the movable front blade group extends along its length direction and beyond one end of the blade rod. The other group of movable blades is movably connected to the outer periphery of the other end of the blade rod, which is designated as the movable rear blade group.

[0023] The projected contours of the movable blades in the front movable blade group and the rear movable blade group do not contact each other along the axial direction of the blade holder.

[0024] As a preferred embodiment, the blade body of this solution is provided with a plurality of protruding teeth on the other side, the plurality of protruding teeth being spaced apart along the length direction of the blade body, the scraper being disposed on one of the protruding teeth, and having a cutting edge that extends above the protruding tooth.

[0025] As a preferred embodiment, the movable front blade assembly of this solution preferably includes two pairs of movable blades, namely a pair of first movable blades and a pair of second movable blades. The pair of first movable blades and the pair of second movable blades are movably connected to the outer periphery of one end of the blade shank in pairs. The ends of the pair of first movable blades and the pair of second movable blades that extend beyond one end of the blade shank are both arc-shaped structures, and the length of the end of the pair of first movable blades extending beyond one end of the blade shank is less than the length of the end of the pair of second movable blades extending beyond one end of the blade shank.

[0026] As a preferred embodiment, the movable rear blade assembly of this solution preferably includes two pairs of movable blades, namely a pair of third movable blades and a pair of fourth movable blades. The pair of third movable blades and the pair of fourth movable blades are movably connected to the outer periphery of the other end of the blade shank in pairs or staggered pairs. At least some of the ends of the third movable blades and / or the fourth movable blades near the movable front blade assembly have an arc-shaped structure.

[0027] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention ingeniously proposes a tool structure in which multiple movable blades are movably connected to the outer periphery of the tool holder. Combined with the elastic component, the limiting component, and the cooperation of multiple movable blades and the tool holder, the movable blades can adapt to bamboo tubes with different bending conditions, allowing them to better clean the bamboo septa inside the bamboo tube. In this solution, multiple movable blades are movably connected to the tool holder, and each movable blade has an extension. After being constrained by the limiting pin of the limiting component, the abnormal situation of the movable blades detaching and falling off can be avoided. Simultaneously, each pair of elastic elements in the connecting groove on the tool holder... Corresponding to each of the movable blades, in this structural configuration, the forces acting on the multiple movable blades are independent. Therefore, when the movable blades penetrate into the bamboo tube, they will adaptively move within the connecting groove according to the external force they receive. When removing bamboo septa from the inside of non-straight bamboo tubes, the movable blades will adaptively compress into the connecting groove on the blade rod during their penetration into the bamboo tube, based on the external force they receive. This allows the movable blades to better clean the bamboo septa from irregularly curved bamboo tubes. In addition, due to the presence of a pair of elastic elements, the side of the movable blade closest to the inner wall of the bamboo tube will remain in partial contact with the bamboo tube, thereby improving the removal effect of the bamboo septa. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is one of the simplified three-dimensional perspective schematic diagrams of the moving tool in this solution;

[0030] Figure 2 This is the second simplified three-dimensional view of the implementation structure of the moving tool in this scheme;

[0031] Figure 3 This is a simplified exploded view of the structural components of the movable cutting tool in this scheme;

[0032] Figure 4 This is one of the simplified two-dimensional schematic diagrams of the moving tool in this solution;

[0033] Figure 5 yes Figure 4 A cross-sectional view of the structure shown in the AA direction;

[0034] Figure 6 yes Figure 4 A cross-sectional view of the structure shown in the BB direction;

[0035] Figure 7 This is a schematic diagram of one of the cutting angles of the simplified implementation structure of the moving tool in this solution;

[0036] Figure 8 This is one of the simplified three-dimensional perspective schematic diagrams of the tool holder of the movable tool in this solution;

[0037] Figure 9 This is a schematic diagram of one embodiment of the multiple movable blades of the movable tool in this solution, which respectively shows the implementation structures of the first movable blade, the second movable blade, the third movable blade and the fourth movable blade;

[0038] Figure 10 This is a diagram illustrating how the active cutting tool of this solution penetrates into the bamboo tube before damaging the bamboo partition during its application.

[0039] Figure 11 This is a diagram illustrating how the movable cutting tool in this solution penetrates into the bamboo tube and damages the bamboo partition during its application. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the invention. Similarly, the following embodiments are only some, not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figures 1 to 11 As shown in one embodiment, a movable knife 200 for removing bamboo partitions is provided. This knife is inserted into a bamboo tube 500 to remove the bamboo partitions 501 within the bamboo tube 500. It includes:

[0042] Tool holder 100;

[0043] Multiple movable blades 200 are movably connected to the outer periphery of the blade holder 100;

[0044] A limiting component 300 is connected to the tool holder 100 and the plurality of movable blades 200. The limiting component 300 is used to restrict the movable blades 200 from disengaging from the tool holder 100.

[0045] An elastic component 400 is disposed on the blade holder 100 and is connected to a plurality of the movable blades 200 respectively; the elastic component 400 is used to provide repulsive force and has a first state and a second state in which it cooperates with the movable blades 200.

[0046] In the first state, the repulsive force provided by the elastic component 400 causes the movable blade 200 to unfold in a direction away from the blade bar 100.

[0047] In the second state, the movable blade 200 is subjected to an external force greater than the repulsive force, which compresses the elastic component 400 and causes the movable blade 200 to retract in a direction close to the blade shank 100.

[0048] In this solution, through the cooperation of the elastic component 400 and the multiple movable blades 200, when the movable blades 200 penetrate into the bamboo tube 500, the repulsive force provided by the elastic component 400 causes the movable blades 200 to unfold in a direction away from the blade handle 100, so that the movable blades 100 can make better contact with the bamboo partitions 501 inside the bamboo tube 500, thereby damaging and removing the bamboo partitions 501.

[0049] Key points combined Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, in order to improve the retraction and expansion range of the movable blade 100, as a possible implementation, the outer periphery of the blade shank 100 of this solution is provided with a connecting groove 101 corresponding to each of the multiple movable blades 200. An extension 204 is provided on one side of the middle portion of the movable blade 200, and the extension 204 is movably inserted into the connecting groove 101 corresponding to the movable blade 200. Preferably, the length of the connecting groove 101 is greater than the length of the movable blade 200, and the length of the extension 204 extending beyond the middle portion of the movable blade 200 is less than the depth of the connecting groove 101.

[0050] Under the above-described implementation structure, the movable blade 100 can be partially pressed into the connecting groove 101 when subjected to external force, so that the movable blade of this solution can better adapt to bamboo tubes 500 with different inner diameters.

[0051] Correspondingly, the extension 204 of this solution is provided with a waist-shaped groove 2041; the limiting component 300 is connected in the connecting groove 101 of the tool holder 100 and cooperates with the extension 204 of the movable blade 200 to restrict the movable blade 200 from disengaging from the tool holder 100; preferably, the limiting component 300 includes:

[0052] There are multiple limiting pins 301, and each of the multiple limiting pins 301 corresponds to the connecting groove 101 of the tool bar 100. The pins 301 are inserted into the connecting groove 101 and pass through the waist-shaped groove 2041 of the movable blade 200, so as to movably connect the movable blade 200 to the tool bar 100.

[0053] In addition, refer to Figure 7 As shown, when the two movable blades 200 on the blade holder 100 are positioned opposite each other, the depth of the movable blade 100 retracting into the connecting groove 101 can be increased by further setting an extension groove 1012 so that the extension part 204 can be further inserted into the extension groove 1012. The extension parts 204 between different movable blades 200 can avoid interference through a staggered structure.

[0054] Key points combined Figure 1 , Figure 2 , Figure 3 , Figure 8 As shown, in order to prevent the end of the limiting pin 301 from being exposed on the surface of the tool holder 100 and affecting the use of the movable tool (e.g., the limiting pin 301 may be loosened by collision), in this solution, the tool holder 100 is provided with a mounting hole 102 corresponding to the insertion position of the limiting pin 301, so that the end of the limiting pin 301 is submerged in the outer surface of the tool holder 100.

[0055] Key points combined Figure 3 , Figure 5 , Figure 6 As shown, in terms of the structure of the elastic component 400, as a preferred embodiment, the elastic component 400 of this solution preferably includes:

[0056] The elastic element 401 is in multiple pairs, and each pair of elastic elements 401 corresponds to a connecting groove 101 on the tool holder 100. The pair of elastic elements corresponding to the connecting groove 101 are respectively disposed at both ends of the connecting groove 101. One end of the elastic element is fixed in the connecting groove 101, and the other end abuts against the movable blade 200 that is movably connected to the connecting groove 101, so that the movable blade 200 is repelled by the elastic element 401 and unfolds in a direction away from the tool holder 100.

[0057] As a preferred embodiment, the elastic element 401 in this solution is preferably a spring.

[0058] In this solution, the connecting groove 101 can be provided with a mounting groove 1011 corresponding to the end of the elastic element 401 to position and fix one end of the elastic element 401 (e.g., a spring). The side of the movable blade 200 opposite to the elastic element 401 can also be adapted to be provided with a structure that cooperates with the elastic element 401, or it can directly contact the elastic element 401. When the elastic element 401 is a spring, the end of the spring away from the connecting groove 101 abuts against the movable blade 200.

[0059] Taking the elastic element 401 as a spring as an example, in this solution, the repulsive force generated by the spring on the movable blade 200 can make the multiple movable blades 200 on the blade shank 100 unfolded in the initial state. When some of the movable blades 200 are subjected to external force, they will adaptively compress the spring to achieve the effect of retracting into the connecting groove 101, thereby enabling the movable blade to adapt to bamboo tubes 500 with different inner diameters.

[0060] In addition to the springs mentioned above, other elastic components can also be used for the elastic element in this solution; at the same time, the installation position of the elastic element 401 is not limited to the connecting groove 101, but can also be installed at other positions on the tool holder 100 to achieve the same effect.

[0061] In this solution, to prevent the movable blade 200 from being completely submerged in the connecting groove 101 and thus unable to participate in the cleaning of the bamboo partition 501, the depth of the connecting groove 101 is less than the width of both sides of the movable blade 200. That is, when the movable blade 200 is extended away from the blade rod 100 by the repulsive force of the elastic member 401, the other side of the movable blade 200 is higher than the outer surface of the blade rod 100, and / or when the movable blade 200 is subjected to an external force greater than the repulsive force, causing the movable blade 200 to retract to its maximum extent in the direction close to the blade rod 100, the other side of the movable blade 200 is higher than the outer surface of the blade rod 100.

[0062] In this solution, in order to enable the movable blade 100 to better clean the bamboo partitions 501 and the inner wall of the bamboo tube 500, as a preferred implementation method, the movable blade 200 in this solution includes a blade body 201 and a scraper 203. The extension 204 is located in the middle of one side of the blade body 201, and the scraper 203 is located on the other side of the blade body 201 and is used to scrape the inner wall of the bamboo tube 500 or the bamboo partitions 501 inside the bamboo tube 500.

[0063] In addition, as a preferred embodiment, the blade body 201 of this solution is provided with a plurality of protruding teeth 202 on the other side. The plurality of protruding teeth 202 are spaced apart along the length direction of the blade body 201. The scraper 203 is provided on one of the protruding teeth 202 and has a cutting edge that is higher than the protruding tooth 202.

[0064] With this structure, the movable blade 200 can be inserted into the bamboo tube 500. The elastic element 401 generates a repulsive force on the movable blade 200, causing the movable blade 200 to adhere to the inner wall of the bamboo tube 500. At least some of the protrusions 202 on the movable blade 200 contact the inner wall of the bamboo tube 500 or the bamboo partition 501 to generate force. At the same time, the scraper 203 on the movable blade 200 will also generate a cutting force on the inner wall of the bamboo tube 500 or the bamboo partition 501, so that other protrusions on the bamboo partition 501 or the inner wall of the bamboo tube 500 are removed.

[0065] Since multiple movable blades 200 are movably connected to the blade rod 100 in this solution, and each movable blade 200 is provided with an extension 204, which, after being constrained and engaged with the limiting pin 301 of the limiting component 300, can prevent the movable blades 200 from detaching and falling off. At the same time, each pair of elastic members 401 in the connecting groove 101 on the blade rod 100 corresponds to each movable blade 200. Under this structural form, the forces on multiple movable blades 200 are independent. Therefore, when the movable blades penetrate into the bamboo tube 500, the movable blades 200 will adaptively move within the connecting groove 101 according to the external force they receive. Due to the presence of a pair of elastic members 401, the side of the movable blade 200 near the inner wall of the bamboo tube 500 will remain in partial contact with the bamboo tube 500, thereby improving the cleaning effect of the bamboo partition 501.

[0066] In this solution, the movable blade mainly relies on the movable blade 200 to contact the bamboo partition 501 inside the bamboo tube 500, and then uses external propulsion force to destroy and clean the bamboo partition 501. When removing bamboo partition 501, based on the principle that the larger the contact area between the movable blade 200 and the bamboo partition 501 under the same force, the smaller the pressure on the bamboo partition 501, this solution can improve the removal effect of bamboo partition 501 by setting multiple movable blades 200 in a staggered manner. At the same time, the structural form of some of the movable blades 200 can also be adaptively adjusted or set with specific structures according to their positions on the blade rod 100. As a preferred implementation method, preferably, the multiple movable blades 200 in this solution are divided into two groups, and the number of movable blades 200 in each group is greater than 1. One group of movable blades 200 is movably connected to the outer periphery of one end of the blade rod 100, which is set as the movable front blade group 21. One end of the movable blades 200 in the movable front blade group extends along its length direction and exceeds one end of the blade rod 100. The other group of movable blades 200 is movably connected to the outer periphery of the other end of the blade rod 100, which is set as the movable rear blade group 22.

[0067] The projected contours of the movable blades 200 in the front movable blade group 200 and the rear movable blade group 200 do not contact each other along the axial direction of the blade holder 100.

[0068] In this solution, the multiple movable blades 200 on the blade holder 100 are arranged in a front-to-back group. Simultaneously, the movable blades 200 are positioned so that they do not interfere with each other along the axial direction of the blade holder 100. This method allows the movable blades 200 of the front blade group 21 to first contact the bamboo septum 501, applying force to a portion of it and causing it to break. Then, as the blade holder 100 of the movable blades further penetrates, the movable blades 200 of the rear blade group 22 apply force to other parts of the bamboo septum 501. This allows the bamboo septum 501 to be better concentrated when subjected to external force, avoiding the need for external equipment to provide greater force for removing the bamboo septum 501 due to simultaneous force from multiple points.

[0069] exist Figure 1 , Figure 2 and Figure 3 Based on what is shown, combined with Figure 9 As shown, as an example of a preferred embodiment, the movable front blade assembly 21 of this solution preferably includes two pairs of movable blades 200, namely a pair of first movable blades 200a and a pair of second movable blades 200b. The pair of first movable blades 200a and the pair of second movable blades 200b are movably connected to the outer periphery of one end of the blade shank 100 in pairs. The ends of the pair of first movable blades 200a and the pair of second movable blades 200b that extend beyond one end of the blade shank 100 are arc-shaped structures 200a1 and 200b1, and the length of one end of the pair of first movable blades 200a extending beyond one end of the blade shank 100 is less than the length of one end of the pair of second movable blades 200b extending beyond one end of the blade shank 100; that is, the two pairs of movable blades 200 (the pair of first movable blades 200a and the pair of second movable blades 200b) of the movable front blade assembly 21 form a misaligned structure in the axial direction of the blade shank 100.

[0070] In addition, the movable rear blade assembly 22 of this solution includes two pairs of movable blades 200, namely a pair of third movable blades 200c and a pair of fourth movable blades 200d. The pair of third movable blades 200c and the pair of fourth movable blades 200d are both movably connected to the outer periphery of the other end of the blade shank 100 in a staggered manner (or they can be opposite each other in a non-staggered manner; this embodiment shows a staggered relative form). At least some of the third movable blades 200c and / or the fourth movable blades 200d have an arc-shaped structure near the end of the movable front blade assembly 21. In this embodiment, the end of the third movable blade 200c is an arc-shaped structure 200c1.

[0071] exist Figures 1 to 9 Based on what is shown, further combine Figure 10 As shown, Figure 10The diagram illustrates the application of the movable blade of this solution. The blade shank 100 is connected to the external drive device 600 and then inserted into the bamboo tube 500, before the bamboo partition 501 is damaged. The diagram clearly shows that when the movable blade 200 (especially the second movable blade 200b shown) unfolds under the action of the elastic element 401, its scraper 203 contacts the inner wall of the bamboo tube 500. As the external drive device 600 further propels the blade shank 100 forward, it further engages with the inner wall of the bamboo tube 500. Figure 11 , Figure 11 This diagram illustrates how the movable blades of this solution penetrate the bamboo tube 500 and damage the bamboo partition 501 during implementation. As can be seen from the diagram, since the ends of the pair of first movable blades 200a and the pair of second movable blades 200b extending beyond the blade shank 100 are both arc-shaped structures 200a1 and 200b1, when they contact the bamboo partition 501, they will to some extent promote the retraction of the first movable blades 200a and the second movable blades 200b (i.e., compress the elastic element 401). Since the pair of second movable blades 200b contact the bamboo partition 501 first, the external driving device 60... The driving force of 0 will create greater pressure on the local area of ​​bamboo partition 501, causing it to break more quickly in a localized manner. Then, as the blade 100 penetrates, the pair of first movable blades 200a come into contact with bamboo partition 501, causing other parts of bamboo partition 501 to break further. Finally, the cutting of scraper 203 further removes bamboo partition 501. With the gradual penetration of the movable blades, the third movable blade 200c and the fourth movable blade 200d will also gradually clean bamboo partition 501 (wherein, the cleaning area formed by the first movable blade 200a, the second movable blade 200b, the third movable blade 200c, and the fourth movable blade 200d can be seen). Figure 4 (As shown); The movable cutting tool in this solution can be used for continuous processing of irregularly curved bamboo tubes to a certain extent. It is used to break and clean the bamboo partitions inside the bamboo tube to obtain a hollow bamboo tube, providing a reliable pre-processing guarantee for the post-processing of the bamboo tube and having high processing efficiency and effect.

[0072] This solution divides the multiple movable cutters 200 into a movable front cutter group 21 and a movable rear cutter group 22 arranged front and rear on the cutter shank 100. The movable front cutter group 21 and the movable rear cutter group 22 each have a pair of first movable cutters 200a, a pair of second movable cutters 200b, a pair of third movable cutters 200c, and a pair of fourth movable cutters 200d, which are all spaced apart and arranged around the cutter shank 100. Additionally, the front ends of the pair of first movable cutters 200a and the pair of second movable cutters 200b in the movable front cutter group 21... Both have arc-shaped structures 200a1 and 200b1, which reduces the friction and other resistance between the protruding teeth 202 and the bamboo partition 501 during the breaking process of the bamboo tube 500. The pair of first movable blades 200a and the pair of second movable blades 200b are spaced apart and staggered, which can improve the breaking efficiency of the bamboo partition 501 pushed into the bamboo tube 500 by the movable blades, while reducing the breaking force of the subsequent third movable blade 200c and fourth movable blade 200d. Since the bamboo tube 500 has a structure with different diameters at both ends, when the movable blade of this solution is initially positioned at the larger end of the bamboo tube 500, as the movable blade moves forward inside the bamboo tube 500, the inner diameter of the bamboo tube 500 gradually decreases. When the elastic element 401 is subjected to external force, it will compress, causing a pair of first movable blades 200a, a pair of second movable blades 200b, a pair of third movable blades 200c, and a pair of fourth movable blades 200d to retract, thereby adapting to the inner diameter of the bamboo tube 500 and achieving a higher bamboo partition 501 breaking effect.

[0073] The above description is only a part of the embodiments of the present invention and does not limit the scope of protection of the present invention. Any equivalent device or equivalent process transformation made based on the content of the present invention specification and drawings, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A movable cutter for removing bamboo partitions, for penetrating into a bamboo cylinder to remove the bamboo partitions in the bamboo cylinder, characterized in that, It includes: Tool holder; The movable blades are multiple and all are movably connected to the outer periphery of the blade holder; A limiting component is connected to the tool holder and the plurality of movable blades, and the limiting component is used to prevent the movable blades from disengaging from the tool holder; An elastic component is disposed on the blade holder and is connected to a plurality of the movable blades respectively; the elastic component is used to provide a repulsive force and has a first state and a second state in mutual cooperation with the movable blades; In the first state, the repulsive force provided by the elastic component causes the movable blade to unfold in a direction away from the blade holder; In the second state, the movable blade is subjected to an external force greater than the repulsive force, which compresses the elastic component and causes the movable blade to retract in a direction close to the blade holder. The outer periphery of the blade holder is provided with a connecting groove corresponding to each of the multiple movable blades. An extension is provided on one side of the middle part of each movable blade, and the extension is movably inserted into the connecting groove corresponding to the movable blade. The elastic component includes: The elastic element is in multiple pairs, and each pair of elastic elements corresponds to a connecting groove on the tool holder. The pair of elastic elements corresponding to the connecting groove are respectively disposed at both ends of the connecting groove. One end of the elastic element is fixed in the connecting groove, and its other end abuts against the movable blade that is movably connected to the connecting groove, so that the movable blade is repelled by the elastic element and unfolds in a direction away from the tool holder. The multiple movable blades are divided into two groups, with each group having more than one movable blade. One group of movable blades is movably connected to the outer periphery of one end of the blade rod, which is designated as the movable front blade group. One end of the movable blades in the movable front blade group extends along its length direction and exceeds one end of the blade rod. The other group of movable blades is movably connected to the outer periphery of the other end of the blade rod, which is designated as the movable rear blade group. The projected contours of the movable blades of the movable front blade group and the movable rear blade group do not contact each other along the axial direction of the blade holder. The movable knife includes a blade body and a scraper. The extension is located in the middle of one side of the blade body, and the scraper is located on the other side of the blade body and is used to scrape the inner wall of the bamboo tube or the bamboo partition inside the bamboo tube. The other side of the blade body is provided with multiple protruding teeth, which are spaced apart along the length of the blade body. The scraper is located on one of the protruding teeth and has a cutting edge that extends beyond the protruding tooth.

2. The movable cutter for cleaning the bamboo partition according to claim 1, wherein, The limiting component is connected in the connecting groove of the tool bar and cooperates with the extension of the movable blade to prevent the movable blade from disengaging from the tool bar.

3. The movable cutter for cleaning the bamboo partition according to claim 2, wherein, The extension is provided with a waist-shaped groove; the limiting component includes: There are multiple limiting pins, and each of the multiple limiting pins corresponds to a connecting groove of the tool bar. The pins are inserted into the connecting groove and pass through the waist-shaped groove of the movable blade, so as to movably connect the movable blade to the tool bar.

4. The movable cutter for cleaning the bamboo partition according to any one of claims 1 to 3, wherein, The elastic element is a spring; The length of the connecting groove is greater than the length of the movable blade, and the length of the extension beyond the middle of the movable blade is less than the depth of the connecting groove; When the movable blade is extended away from the blade rod by the repulsive force of the elastic element, the other side of the movable blade is higher than the outer surface of the blade rod, and / or when the movable blade is subjected to an external force greater than the repulsive force, causing the movable blade to retract to its maximum extent in the direction close to the blade rod, the other side of the movable blade is higher than the outer surface of the blade rod.

5. The movable cutter for cleaning the bamboo partition according to claim 4, wherein, The movable front blade assembly includes two pairs of movable blades, namely a pair of first movable blades and a pair of second movable blades. The pair of first movable blades and the pair of second movable blades are movably connected to the outer periphery of one end of the blade shank in pairs. The ends of the pair of first movable blades and the pair of second movable blades that extend beyond one end of the blade shank are both arc-shaped structures, and the length of the end of the pair of first movable blades extending beyond one end of the blade shank is less than the length of the end of the pair of second movable blades extending beyond one end of the blade shank. The movable rear blade assembly includes two pairs of movable blades, namely a pair of third movable blades and a pair of fourth movable blades. The pair of third movable blades and the pair of fourth movable blades are movably connected to the outer periphery of the other end of the blade shank, either opposite to each other or staggered in opposite directions. At least some of the third movable blades and / or the fourth movable blades have an arc-shaped structure near the end of the movable front blade assembly.

Images