Composite material cutting device

Abstract

The utility model discloses a composite material cutting device, which relates to the technical field of composite materials, and comprises a workbench, wherein two groups of cutting mechanisms are symmetrically arranged at the center of the top of the workbench, and the structures of the two groups of cutting mechanisms are the same; wherein the cutting mechanism comprises a fixing mechanism 1 symmetrically arranged at the top of the workbench, a variable distance adjustment mechanism is interspersed between the two groups of fixing mechanisms 1, a plurality of cutting knives are arranged at the bottom of the variable distance adjustment mechanism, and a fixing mechanism 2 is arranged on both sides of the cutting knives. The utility model prevents sliding or wrinkling of the composite material during the cutting process through the coordinated arrangement of the fixing mechanism 1, the variable distance adjustment mechanism, the cutting knives and the fixing mechanism 2, thereby ensuring the cutting accuracy and cutting quality, and at the same time avoiding repeated cutting operations when cutting a long composite material into a plurality of composite material sections of equal length, thereby improving the cutting efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of composite materials, in particular to a composite material cutting device. Background Art

[0002] Composite materials, as the pioneer of materials in the new era, have achieved an excellent performance combination that is difficult to achieve with a single material by cleverly integrating lightweight and high-strength metal alloys with cutting-edge non-metallic materials. This innovative fusion not only greatly improves the strength, durability and corrosion resistance of the material, but also effectively reduces the weight and optimizes the electrical performance, opening up a new path for modern industry in the pursuit of ultimate efficiency and green production; therefore, as composite materials are widely infiltrated into the manufacturing of precision structural parts and complex system components, each processing technology is directly related to the final quality and reliability of the product; among them, the cutting process, as a basic step before the molding of composite materials, is of self-evident importance, so cutting devices specifically for composite materials are becoming increasingly popular.

[0003] For example, Chinese patent CN215903597U discloses a novel fiber and composite material cutting device, including a base, a long plate, a long groove, a first threaded rod and a motor. By starting the motor to drive the first threaded rod to rotate, the rectangular threaded sleeve can move backward to a suitable length, and the cylinder drives the pressing plate to move downward, so that the cutting device can cut out a fiber composite material of suitable length. However, when the above-mentioned cutting device is cutting, when the long composite material is divided into a plurality of composite material segments of equal length, each time a segment is cut, the composite material needs to be re-placed before the next segment can be cut, resulting in the need for repeated cutting of the long composite material to be cut into a plurality of composite material segments of equal length, which greatly affects the cutting efficiency.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a composite material cutting device to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A composite material cutting device comprises a workbench, wherein two groups of cutting mechanisms are symmetrically arranged at the center of the top of the workbench, and the two groups of cutting mechanisms have the same structure; wherein the cutting mechanism comprises a fixing mechanism 1 symmetrically arranged at the top of the workbench, a variable distance adjustment mechanism is interspersed between the two groups of fixing mechanisms 1, a plurality of cutting knives are arranged at the bottom end of the variable distance adjustment mechanism, and a fixing mechanism 2 is arranged on both sides of the cutting knives.

[0008] Furthermore, in order to prevent the composite material from sliding or wrinkling during the cutting process, the threaded sleeve can be driven to rotate under the rotation of the output shaft of motor 1, so that the threaded rod can move downward with the fixed plate, thereby fixing the composite material on the workbench, ensuring the stability of cutting, and then ensuring the accuracy of cutting. The fixing mechanism 1 includes a fixing column symmetrically arranged on the top edge of the workbench, and the outer side of the fixing column is sequentially sleeved with a fixing plate and a supporting plate in the direction away from the workbench. A threaded rod is arranged at the top of the fixing plate, and a threaded sleeve is sleeved on the top of the threaded rod. The top of the threaded sleeve is connected to the output shaft of motor 1; a gear is arranged at the top of the support plate and on one side of the threaded sleeve, and the top of the gear is connected to the output shaft of motor 2; a limiting groove 1 is provided at the top of the fixing plate and on a side close to the variable pitch adjustment mechanism, and the cross section of the limiting groove 1 is a cross-shaped structure, a limiting groove 2 is provided in the middle of the top of the fixing plate, and a protrusion is provided inside the limiting groove 2 and at the bottom of the threaded rod; a limiting groove 3 is provided at the top of the support plate and on a side close to the variable pitch adjustment mechanism.

[0009] Furthermore, in order to cut a long composite material into multiple composite material segments of equal length at one time, the threaded column can be driven to rotate under the rotation of the rotating handle, and the moving block can be driven to move under the cooperation of connecting rod 1, connecting rod 2 and connecting rod 3, and at the same time, the distance between two adjacent groups of moving blocks is equal, so that the cutting shears can cut the composite material into multiple segments of equal length, thereby improving the cutting efficiency. The variable distance adjustment mechanism includes a moving plate arranged in limit groove 1 and limit groove 3, and a rack meshing with the gear is arranged on the top of the side of the moving plate close to motor 2; a threaded column is interspersed between the two groups of symmetrical moving plates, and limit columns are arranged on both sides of the threaded column. A plurality of moving blocks are arranged on the outside, a circular groove is opened in the middle of one side of the moving block, a threaded ring matching with the threaded column is arranged inside the first circular groove close to the moving plate, a connecting rod 1 is arranged at the bottom end of the moving block outside the threaded ring, a connecting plate is arranged at the bottom of the other side of the moving plate away from the connecting rod 1, a connecting rod 2 is connected to the top of the connecting plate, a plurality of connecting rods 3 are arranged between the connecting rod 1 and the connecting rod 2, a rotating column is arranged in the middle of the connecting rod 3; a rotating handle is arranged at the end of the threaded column; the threaded column is located inside the circular groove, and the diameter of the circular groove is larger than the diameter of the threaded column; the connecting rod 1 and the connecting rod 3, the connecting rod 2 and the connecting rod 3, and the two adjacent groups of connecting rods 3 are connected by a pin shaft; the rotating column is connected to the middle of the bottom end of the moving block.

[0010] Furthermore, in order to ensure that the cutting part does not affect the stability of cutting when the composite material is cut into multiple sections, the fixed block can fix the cutting part on the workbench under the extension and retraction of the telescopic rod and the elastic action of the spring, so that the cutting knife can cut the composite material more stably, thereby improving the accuracy of multi-section cutting of the composite material. The second fixing mechanism includes a telescopic rod arranged on one side of the cutting knife, a spring is arranged on the outside of the telescopic rod, and a fixed block is arranged at the bottom end of the telescopic rod; the cutting knife is located at the bottom edge of the moving block, and the cutting knife is close to the top center of the workbench.

[0011] The beneficial effects of the utility model are:

[0012] The utility model prevents the composite material from sliding or wrinkling during the cutting process through the coordinated arrangement of the fixing mechanism 1, the variable distance adjustment mechanism, the cutting knife and the fixing mechanism 2, thereby ensuring the cutting accuracy and cutting quality, and avoiding repeated cutting operations when cutting a long composite material into a plurality of composite material sections of equal length, thereby improving the cutting efficiency.

[0013] By setting up a fixing mechanism 1, the threaded sleeve can be driven to rotate under the rotation of the output shaft of the motor 1, so that the threaded rod can move downward with the fixing plate, thereby fixing the composite material on the workbench, ensuring the stability of the cutting and further ensuring the accuracy of the cutting.

[0014] By setting up a variable distance adjustment mechanism, the threaded column can be driven to rotate under the rotation of the rotating handle, and the moving block can be driven to move under the cooperation of connecting rod one, connecting rod two and connecting rod three, and the distance between two adjacent groups of moving blocks is made equal, so that the cutting knife can cut the composite material into multiple segments of equal length, thereby improving the cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is one of the structural schematic diagrams of a composite material cutting device according to an embodiment of the utility model;

[0017] Figure 2 This is a second structural schematic diagram of a composite material cutting device according to an embodiment of the utility model;

[0018] Figure 3This is one of the partial structural schematic diagrams of a composite material cutting device according to an embodiment of the utility model;

[0019] Figure 4 This is a second partial structural schematic diagram of a composite material cutting device according to an embodiment of the utility model;

[0020] Figure 5 This is one of the partial three-dimensional assembly diagrams of a composite material cutting device according to an embodiment of the utility model;

[0021] Figure 6 This is a third partial structural schematic diagram of a composite material cutting device according to an embodiment of the utility model;

[0022] Figure 7 This is the second partial three-dimensional assembly diagram of a composite material cutting device according to an embodiment of the utility model.

[0023] In the figure:

[0024] 1. Workbench; 2. Fixing mechanism 1; 201. Fixing column; 202. Fixing plate; 203. Support plate; 204. Threaded rod; 205. Threaded sleeve; 206. Gear; 207. Motor 1; 208. Limiting groove 1; 209. Limiting groove 2; 210. Bump; 211. Limiting groove 3; 212. Motor 2; 3. Pitch adjustment mechanism; 301. Moving plate; 302. Rack; 303. Threaded column; 304. Limiting column; 305. Moving block; 306. Circular groove; 307. Threaded ring; 308. Connecting rod 1; 309. Connecting plate; 310. Connecting rod 2; 311. Connecting rod 3; 312. Rotating column; 313. Rotating handle; 4. Cutting scissors; 5. Fixing mechanism 2; 501. Telescopic rod; 502. Spring; 503. Fixing block. DETAILED DESCRIPTION

[0025] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] According to an embodiment of the utility model, a composite material cutting device is provided.

[0027] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-7As shown, the composite material cutting device according to the embodiment of the utility model includes a workbench 1, and two groups of cutting mechanisms are symmetrically arranged at the center of the top of the workbench 1, and the structures of the two groups of cutting mechanisms are the same; wherein the cutting mechanism includes a fixing mechanism 2 symmetrically arranged at the top of the workbench 1, a variable distance adjustment mechanism 3 is interspersed between the two groups of fixing mechanisms 2, a plurality of cutting knives 4 are arranged at the bottom end of the variable distance adjustment mechanism 3, and a fixing mechanism 2 5 is arranged on both sides of the cutting knives 4.

[0028] With the aid of the above-mentioned technical scheme of the utility model, the utility model prevents the composite material from sliding or wrinkling during the cutting process through the coordinated arrangement of the fixing mechanism 1 2, the variable distance adjustment mechanism 3, the cutting knife 4 and the fixing mechanism 2 5, thereby ensuring the cutting accuracy and the cutting quality, and at the same time avoiding multiple repeated cutting operations when cutting a long composite material into multiple composite material sections of equal length, thereby improving the cutting efficiency.

[0029] In one embodiment, for the above-mentioned fixing mechanism 1 2, the fixing mechanism 1 2 includes a fixing column 201 symmetrically arranged on the top edge of the workbench 1, and the outer side of the fixing column 201 is sequentially sleeved with a fixing plate 202 and a supporting plate 203 in a direction away from the workbench 1, and a threaded rod 204 is arranged on the top of the fixing plate 202, and a threaded sleeve 205 is sleeved on the top of the threaded rod 204, and the top of the threaded sleeve 205 is connected to the output shaft of the motor 1 207; a gear 206 is arranged on the top of the supporting plate 203 and on one side of the threaded sleeve 205, and the top of the gear 206 is connected to the output shaft of the motor 2 212; the top of the fixing plate 202 and close to the fixing plate 202 are provided. A limiting groove 208 is provided on one side near the variable distance adjustment mechanism 3, and the cross section of the limiting groove 208 is a cross-shaped structure. A limiting groove 209 is provided in the middle of the top end of the fixed plate 202, and a protrusion 210 is provided inside the limiting groove 209 and at the bottom end of the threaded rod 204; a limiting groove 3 211 is provided at the top end of the support plate 203 and on the side close to the variable distance adjustment mechanism 3; under the rotation of the output shaft of the motor 207, the threaded sleeve 205 can be driven to rotate, so that the threaded rod 204 can move downward with the fixed plate 202, so that the composite material can be fixed on the workbench 1, ensuring the stability of cutting, and then ensuring the accuracy of cutting.

[0030] The working principle of the fixing mechanism 2 is as follows: by starting the motor 207, the output shaft of the motor 207 rotates to drive the threaded sleeve 205 to rotate, and under the limiting action of the fixing column 201, the threaded rod 204 rotates and moves downward inside the threaded sleeve 205, and under the cooperation of the protrusion 210 and the limiting groove 209, the fixing plate 202 is pushed to move downward until the fixing plate 202 presses the composite material onto the workbench 1.

[0031] In one embodiment, for the above-mentioned variable pitch adjustment mechanism 3, the variable pitch adjustment mechanism 3 includes a moving plate 301 arranged inside the limiting groove 1 208 and the limiting groove 3 211, and a rack 302 meshing with the gear 206 is arranged on the top of the moving plate 301 near the motor 212; a threaded column 303 is interspersed between the two groups of symmetrical moving plates 301, and limiting columns 304 are arranged on both sides of the threaded column 303, and a plurality of moving blocks 305 are arranged on the outside of the two groups of limiting columns 304, and a circular groove 306 is opened in the middle of one side of the moving block 305, and a threaded ring 307 matching with the threaded column 303 is arranged inside the first circular groove 306 near the moving plate 301, and a connecting rod 1 308 is arranged at the bottom end of the moving block 305 outside the threaded ring 307, and a connecting rod 1 308 is arranged at the bottom of the other side of the moving plate 301 away from the connecting rod 1 308, and the top of the connecting plate 309 is connected to the connecting rod 2 31 0, a plurality of connecting rods 311 are arranged between the connecting rod 1 308 and the connecting rod 2 310, and a rotating column 312 is arranged in the middle of the connecting rod 311; a rotating handle 313 is arranged at the end of the threaded column 303; the threaded column 303 is located inside the circular groove 306, and the diameter of the circular groove 306 is larger than the diameter of the threaded column 303; the connecting rod 1 308 and the connecting rod 3 311 and the connecting rod 2 310 and the connecting rod 3 311 as well as the two adjacent groups of connecting rods 3 311 are all connected by pins; the rotating column 312 is connected to the middle part of the bottom end of the moving block 305; it can drive the threaded column 303 to rotate under the rotation of the rotating handle 313, and drive the moving block 305 to move under the cooperation of the connecting rod 1 308, the connecting rod 2 310 and the connecting rod 3 311, and at the same time make the distance between the two adjacent groups of moving blocks 305 equal, so that the cutting knife 4 can cut the composite material into a plurality of segments of equal length, thereby improving the cutting efficiency.

[0032] In addition, it needs to be explained that the movable plate 301 is connected to the fixed plate 202. When the fixed plate 202 moves up and down, the movable plate 301 will also move up and down with the fixed plate 202. In order to ensure that the rack 302 and the gear 206 at the top of the movable plate 301 can always maintain meshing movement, the movable plate 301 is a retractable structure.

[0033] In addition, in specific applications, the above-mentioned rotating column 312 is provided with a connecting column in the middle and fixedly connected to the bottom end of the above-mentioned moving block 305. A rotating ring is sleeved on the outer side of the connecting column and can rotate with the connecting rod three 311. This rotating column 312 is a prior art and will not be elaborated in detail here.

[0034] The working principle of the variable pitch adjustment mechanism 3 is as follows: when the fixing mechanism 1 2 does not fix the composite material, the motor 212 is started, and the output shaft of the motor 212 is rotated to drive the gear 206 to rotate, and the meshing rack 302 and the moving plate 301 are driven to move. At the same time, the rotating handle 313 at the end of the threaded column 303 is rotated to rotate the threaded column 303, and under the cooperation of the threaded ring 307, the moving block 305 outside the threaded ring 307 can move on the limit column 304, thereby pulling the connecting rod 1 308. It makes circular motion, and with the cooperation of the rotating column 312, it drives the connecting rod 2 310 and the connecting rod 3 311 to also make circular motion, so that all the moving blocks 305 move, and finally an equal specific distance is generated between two adjacent groups of moving blocks 305, and finally the cutting knife 4 at the bottom of the moving block 305 is moved above the position to be cut. At this time, the motor 2 212 is turned off, and when the fixing mechanism 1 2 fixes the composite material on the workbench 1, the cutting knife 4 can cut the composite material into multiple segments of equal length, thereby improving the cutting efficiency.

[0035] In one embodiment, for the above-mentioned fixing mechanism 2 5, the fixing mechanism 2 5 includes a telescopic rod 501 arranged on one side of the cutting knife 4, a spring 502 is arranged on the outer side of the telescopic rod 501, and a fixed block 503 is arranged at the bottom end of the telescopic rod 501; the cutting knife 4 is located at the bottom edge of the moving block 305, and the cutting knife 4 is close to the top center of the workbench 1; under the extension and contraction of the telescopic rod 501 and the elastic action of the spring 502, the fixed block 503 can fix the cutting part on the workbench 1, so that the cutting knife 4 can cut the composite material more stably, thereby improving the accuracy of multi-segment cutting of the composite material.

[0036] Working principle of fixing mechanism 2 5: When the fixing plate 202 presses the composite material onto the workbench 1, the telescopic rod 501 and the spring 502 are compressed, so that the fixing block 503 can fix the composite material on both sides of the cutting knife 4 on the workbench 1, and at the same time, the cutting knife 4 presses and cuts the composite material on the workbench 1, so that the cutting knife 4 can cut the composite material more accurately.

[0037] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0038] In actual application, the staff lays the composite material on the top center of the workbench 1, and then cuts it through a group of cutting mechanisms, that is, the cutting knife 4 is adjusted to the position above the cutting position through the variable distance adjustment mechanism 3, and the composite material is further fixed on the workbench 1 through the fixing mechanism 1 2 and the fixing mechanism 2 5, so that the cutting knife 4 presses and cuts the composite material. When one group of cutting mechanisms cannot fully cut the composite material into a plurality of equal length segments, it is necessary to start another group of cutting mechanisms to cut the remaining uncut composite material. Similarly, the cutting knife 4 is adjusted to the position above the remaining composite material that needs to be cut through the variable distance adjustment mechanism 3, and the composite material is further fixed on the workbench 1 through the fixing mechanism 1 2 and the fixing mechanism 2 5, so that the cutting knife 4 presses and cuts the composite material, thereby cutting the composite material into a plurality of equal length segments, preventing the composite material from sliding or wrinkling during the cutting process, ensuring the cutting accuracy, ensuring the cutting quality, and improving the cutting efficiency.

[0039] In summary, with the aid of the above technical solution of the utility model, the fixing mechanism 1 2, the variable distance adjustment mechanism 3, the cutting blade 4 and the fixing mechanism 2 5 are arranged in coordination, so that the composite material is prevented from sliding or wrinkling during the cutting process, the cutting accuracy is ensured, the cutting quality is ensured, and at the same time, the long composite material is avoided from being repeatedly cut into a plurality of composite material sections of equal length, thereby improving the cutting efficiency; by setting the fixing mechanism 1 2, the threaded sleeve 205 can be driven to rotate under the rotation of the output shaft of the motor 1 207, so that the threaded rod 204 can be The fixed plate 202 is moved downward, so that the composite material can be fixed on the workbench 1, ensuring the stability of cutting and further ensuring the accuracy of cutting; by setting up the variable distance adjustment mechanism 3, the threaded column 303 can be driven to rotate under the rotation of the rotating handle 313, and the moving block 305 can be driven to move under the cooperation of the connecting rod 1 308, the connecting rod 2 310 and the connecting rod 3 311, and at the same time, the distance between the two adjacent groups of moving blocks 305 is equal, so that the cutting knife 4 can cut the composite material into multiple segments of equal length, thereby improving the cutting efficiency.

[0040] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite material cutting device, comprising a workbench (1), characterized in that: Two sets of cutting mechanisms are symmetrically arranged at the top center of the workbench (1), and the two sets of cutting mechanisms have the same structure; The cutting mechanism comprises a fixing mechanism one (2) symmetrically arranged at the top of the workbench (1), a variable distance adjustment mechanism (3) is interspersed between two groups of the fixing mechanism one (2), a plurality of cutting knives (4) are arranged at the bottom end of the variable distance adjustment mechanism (3), and a fixing mechanism two (5) is arranged on both sides of the cutting knives (4).

2. A composite material cutting device according to claim 1, characterized in that: The fixing mechanism 1 (2) comprises a fixing column (201) symmetrically arranged at the top edge of the workbench (1), a fixing plate (202) and a supporting plate (203) being sleeved in sequence on the outer side of the fixing column (201) in a direction away from the workbench (1), a threaded rod (204) being arranged at the top of the fixing plate (202), a threaded sleeve (205) being sleeved at the top of the threaded rod (204), and a top end of the threaded sleeve (205) being connected to an output shaft of a motor 1 (207); A gear (206) is provided at the top end of the support plate (203) and located on one side of the threaded sleeve (205), and the top end of the gear (206) is connected to the output shaft of the second motor (212); A limiting groove (208) is provided at the top of the fixing plate (202) and on a side close to the variable pitch adjustment mechanism (3), and the cross section of the limiting groove (208) is a cross-shaped structure; a limiting groove (209) is provided at the middle of the top of the fixing plate (202); a protrusion (210) is provided inside the limiting groove (209) and at the bottom end of the threaded rod (204); A third limiting groove (211) is provided at the top end of the support plate (203) and on a side close to the variable distance adjustment mechanism (3).

3. A composite material cutting device according to claim 2, characterized in that: The variable pitch adjustment mechanism (3) comprises a movable plate (301) arranged inside the first limiting groove (208) and the third limiting groove (211), and a rack (302) meshing with the gear (206) is arranged on the top of one side of the movable plate (301) close to the second motor (212); A threaded column (303) is interspersed between the two groups of symmetrical moving plates (301), and limiting columns (304) are arranged on both sides of the threaded column (303). A plurality of moving blocks (305) are arranged outside the two groups of limiting columns (304), and a circular groove (306) is opened in the middle of one side of the moving block (305). A threaded ring (307) matching with the threaded column (303) is arranged inside the first circular groove (306) close to the moving plate (301). A connecting rod 1 (308) is disposed at the bottom end of the moving block (305) outside the threaded ring (307), a connecting plate (309) is disposed at the bottom of the other side of the moving plate (301) away from the connecting rod 1 (308), a connecting plate (309) is connected to a connecting rod 2 (310) at the top end of the connecting plate (309), a plurality of connecting rods 3 (311) are disposed between the connecting rods 1 (308) and the connecting rods 2 (310), and a rotating column (312) is disposed in the middle of the connecting rods 3 (311); A rotating handle (313) is provided at the end of the threaded column (303).

4. A composite material cutting device according to claim 3, characterized in that: The second fixing mechanism (5) comprises a telescopic rod (501) arranged on one side of the cutting knife (4), a spring (502) is arranged on the outer side of the telescopic rod (501), and a fixing block (503) is arranged at the bottom end of the telescopic rod (501); The cutting knife (4) is located at the bottom edge of the moving block (305), and the cutting knife (4) is close to the top center of the workbench (1).

5. A composite material cutting device according to claim 3, characterized in that: The threaded column (303) is located inside the circular groove (306), and the diameter of the circular groove (306) is greater than the diameter of the threaded column (303).

6. A composite material cutting device according to claim 3, characterized in that: The connecting rod 1 (308) and the connecting rod 3 (311), the connecting rod 2 (310) and the connecting rod 3 (311), and two adjacent groups of the connecting rod 3 (311) are all connected via a pin shaft.

7. A composite material cutting device according to claim 3, characterized in that: The rotating column (312) is connected to the middle portion of the bottom end of the moving block (305).

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