Cutting machine and cutting tool thereof

Abstract

The utility model relates to a cutting machine and a cutting tool thereof. The cutting tool comprises a supporting base, a blade assembly, a knob head and an elastic piece. The knob head can move in the direction parallel to the axial direction of the circular rotating part, so that the knob head can be pulled out, the second fixing structure is separated from the first fixing structure, the angle of the blade and the angle of the fixing frame can be adjusted, and then the second fixing structure gets close to the first fixing structure through the elastic force of the elastic piece; the second fixing structure is matched with the first fixing structure, so that the rotating angle of the knob head is fixed, the position of the blade is fixed, and switching of the blade is achieved. Compared with a traditional buckle structure, the structure is simple, installation difficulty is small, and production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutting, in particular to a cutting machine and a cutting tool thereof. Background Art

[0002] A cutting machine is used for cutting paper, photos, films, etc. A guide rail is arranged on the existing cutting machine, and a cutting tool slides on the guide rail. A knife groove is arranged on the cutting guide rail. In this way, when the cutting tool slides on the guide rail, the blade of the cutting tool slides in the knife groove, so as to cut the paper on the cutting table surface of the cutting machine.

[0003] In order to cut the edges or lines of paper with different shapes, a variety of blades are arranged on the cutting tool of the cutting machine. Different blades can cut out different shapes. This kind of cutting tool is also called a hob, and the cutting of paper is realized by the rolling of a circular blade. For example, a straight-edge blade can cut the edge of the paper into a straight edge, a lace blade can cut the edge of the paper into a wavy shape, and a dotted-edge blade can cut dotted holes on the paper.

[0004] In order to realize the switching of different blades, a knob is arranged on the cutting tool, and the blade is switched by rotating the knob. After the knob reaches the corresponding blade, press the buckle to fix the knob, so as to fix the position of the blade. The cutting tool with a structure of fixing the blade position by a buckle has a complex structure, a large installation difficulty, and a high production cost. Summary of the Utility Model

[0005] Based on this, it is necessary to provide a cutting tool.

[0006] A cutting tool includes: a support seat, a blade assembly, a knob head, and an elastic member;

[0007] Two spaced and parallel support frames are arranged on the support seat. A rotation groove is formed between the two support frames. Rotation holes are formed in the side walls on at least one side of the rotation groove. A first fixing structure is arranged on the support frame;

[0008] The blade assembly includes a fixing frame and at least two blades. Each blade is rotatably arranged on the fixing frame through a rotating shaft. The shapes of the blades are different from each other. The fixing frame is convexly provided with a circular rotating part along the axial direction parallel to the rotating shaft. The circular rotating part is rotatably arranged in the rotation hole. The fixing frame is rotatably arranged in the rotation groove. Each blade is arranged around the circular rotating part with the center of the circular rotating part as the center of the circle, and when each blade rotates to a preset angle with the fixing frame, at least part of the blade protrudes to the outside of the rotation groove;

[0009] The knob head is arranged outside the rotation groove. The knob head is coaxially arranged with the circular rotation part of the fixed frame, and the knob head rotates synchronously with the fixed frame. The knob head is movably connected to the fixed frame in a direction parallel to the axial direction of the circular rotation part. One end of the elastic member is connected to the support seat, and the other end of the elastic member is connected to the knob head. The knob head is provided with a second fixing structure, and the second fixing structure of the knob head cooperates with the first fixing structure under the elastic force of the elastic member to fix the angle of the fixed frame in the rotation groove. The number of the first fixing structures and at least one of the number of the second fixing structures is equal to the number of the blades.

[0010] In one embodiment, the first fixing structure is a positioning hole arranged on the support frame, and the second fixing structure is a positioning post protruding from one side of the knob head facing the support frame. The positioning post is movably inserted into the positioning hole. The number of at least one of the positioning hole and the positioning post is equal to the number of the blades, and the distribution angle of at least one of the positioning hole and the positioning post in a direction parallel to the radial direction of the circular rotation part is equal to the distribution angle of the blades in a direction parallel to the radial direction of the circular rotation part.

[0011] In one embodiment, end portions of each of the support frames protrude outwardly to both sides to form sliding portions.

[0012] In one embodiment, the number of the blades is three. The three blades are arranged around the circular rotation part at equal angles with the center of the circular rotation part as the center. The three blades include a straight-edge blade, a curved-edge blade, and a virtual-edge blade.

[0013] In one embodiment, a spline groove is arranged on one side of the knob head facing the fixed frame, and a spline portion protrudes from one side of the fixed frame. The spline portion is movably inserted into the spline groove, and the central axis of the spline portion coincides with the central axis of the circular rotation part.

[0014] In one embodiment, the fixed frame includes a first clamping frame and a second clamping frame. One end of each of the rotating shafts is connected to the first clamping frame, and the other end of each of the rotating shafts is connected to the second clamping frame. The first clamping frame and the second clamping frame are connected by screws, and a gap is formed between the first clamping frame and the second clamping frame. Each of the blades is arranged on the rotating shaft and located in the gap between the first clamping frame and the second clamping frame, and at least part of each of the blades protrudes outside the gap between the first clamping frame and the second clamping frame.

[0015] In one embodiment, a receiving cavity is formed inside the support base. The two support frames are disposed inside the receiving cavity and are connected to the side wall of the receiving cavity. The knob head is disposed inside the receiving cavity. The support base is provided with a moving hole. One end of the knob head away from the support frame passes through the moving hole and at least part of it is disposed outside the receiving cavity. Moreover, the width of one end of the knob head close to the support frame is greater than the width of the moving hole.

[0016] In one embodiment, the support base includes a first support sub-base and a second support sub-base. The first support sub-base is provided with a first sub-groove, and the second support sub-base is provided with a second sub-groove. The end face of one end of the first support sub-base abuts against the end face of one end of the second support sub-base. The first sub-groove and the second sub-groove are combined to form the moving hole. The first support sub-base and the second support sub-base are connected by screws.

[0017] In one embodiment, a first sub-cavity is provided inside the first support sub-base, and a second sub-cavity is provided inside the second support sub-base. Two spaced and parallel first sub-frames are disposed inside the first sub-cavity. Each first sub-frame is provided with a first half-rotating hole. Two spaced and parallel second sub-frames are disposed inside the second sub-cavity. Each second sub-frame is provided with a second half-rotating hole. When the end face of one end of the first support sub-base abuts against the end face of one end of the second support sub-base, the two first sub-frames and the two second sub-frames are in one-to-one abutment. The first sub-frame and the second sub-frame are connected to form the support frame, and each first half-rotating hole and a second half-rotating hole are combined to form the rotating hole.

[0018] A cutting machine includes the cutting tool in any of the above embodiments.

[0019] For the above cutting machine and its cutting tool, by setting the knob head to be movable in a direction parallel to the axial direction of the circular rotating part, the knob head can be pulled out so that the second fixing structure can be separated from the first fixing structure, enabling the angle of the blade and the fixing frame to be adjustable. Subsequently, the elastic force of the elastic member causes the second fixing structure to approach the first fixing structure. The second fixing structure and the first fixing structure cooperate to fix the rotation angle of the knob head, thereby fixing the position of the blade and realizing the switching of the blade. Compared with the traditional snap structure, the above structure is simple and has a lower installation difficulty, which is beneficial to reducing production costs. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic three-dimensional structure diagram of a cutting machine in one direction according to an embodiment;

[0022] Figure 2 It is a schematic three-dimensional exploded structure diagram of a cutting tool in one direction according to an embodiment;

[0023] Figure 3 It is a schematic three-dimensional exploded structure diagram of a cutting tool in another direction according to an embodiment;

[0024] Figure 4 It is a schematic three-dimensional exploded structure diagram of a cutting tool in yet another direction according to an embodiment;

[0025] Figure 5 It is a schematic three-dimensional exploded structure diagram of a cutting tool in still another direction according to an embodiment;

[0026] Figure 6 It is a schematic three-dimensional exploded structure diagram of a blade assembly in one direction according to an embodiment;

[0027] Figure 7A It is a schematic structure diagram of a straight-edge blade according to an embodiment;

[0028] Figure 7B It is a schematic structure diagram of a curved-edge blade according to an embodiment;

[0029] Figure 7C It is a schematic structure diagram of a virtual-edge blade according to an embodiment. Detailed implementation manners

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] As Figures 1 to 6 shown, it is a cutting tool 100 according to an embodiment of the present invention, including: a support base 200, a blade assembly 300, a knob head 400, and an elastic member (not shown in the figure);

[0032] Two spaced and parallel support frames 210 are provided on the support base 200. A rotation groove 211 is formed between the two support frames 210. A rotation hole 212 is formed in the side wall of at least one side of the rotation groove 211. A first fixing structure is provided on the support frame 210.

[0033] The blade assembly 300 includes a fixing frame 310 and at least two blades 320. Each blade 320 is rotatably arranged on the fixing frame 310 through a rotation shaft 350. The shapes of the blades 320 are different. The fixing frame 310 is provided with a circular rotation part 330 protruding in the axial direction parallel to the rotation shaft 350 of the blade 320. The circular rotation part 330 is rotatably arranged in the rotation hole 212. The fixing frame 310 is rotatably arranged in the rotation groove 211. Each blade 320 is arranged around the circular rotation part 330 with the center of the circular rotation part 330 as the center of the circle. When each blade 320 rotates with the fixing frame 310 to a preset angle, at least a part of the blade 320 protrudes to the outside of the rotation groove 211.

[0034] The knob head 400 is arranged outside the rotation groove 211. The knob head 400 is coaxially arranged with the circular rotation part 330 of the fixing frame 310, and the knob head 400 rotates synchronously with the fixing frame 310. The knob head 400 is movably connected to the fixing frame 310 in the axial direction parallel to the circular rotation part 330. One end of the elastic member is connected to the support base 200, and the other end of the elastic member is connected to the knob head 400. The knob head 400 is provided with a second fixing structure. The second fixing structure of the knob head 400 cooperates with the first fixing structure under the elastic force of the elastic member to fix the angle of the fixing frame 310 in the rotation groove 211. The number of the first fixing structures and at least one of the number of the second fixing structures is equal to the number of the blades 320. The distribution angle of at least one of the first fixing structure and the second fixing structure in the radial direction parallel to the circular rotation part 330 is equal to the distribution angle of the blade 320 in the radial direction parallel to the circular rotation part 330.

[0035] In this embodiment, the cutting tool 100 is arranged on the cutting table 600 of the cutting machine 10. The support base 200 slides along the guide rail on the cutting table 600. The blade 320 protrudes to the end face of the support frame 210 so that the blade 320 protrudes outside the rotation groove 211. The blade 320 is set to be circular. In this way, the blade 320 can be inserted into the tool groove on the cutting table 600. When the support base 200 slides, it drives the blade 320 to slide in the tool groove. When the blade 320 abuts against the paper, the blade 320 rolls to realize the rolling cutting of the paper.

[0036] In this embodiment, the support frame 210 is used to support the blade 320. The blade 320 can rotate relative to the support frame 210 through a rotating shaft 350. For example, the rotating shaft 350 is fixedly connected to the support frame 210. The blade 320 is provided with a rotating hole, and the rotating shaft 350 passes through the rotating hole. The blade 320 is rotatably arranged on the rotating shaft 350. For example, the blade 320 is fixedly arranged on the rotating shaft 350, and the rotating shaft 350 is rotatably connected to the support frame 210.

[0037] The fixing frame 310 rotates relative to the support frame 210 on the support frame 210 through a circular rotating part 330. When the blade 320 rotates with the fixing frame 310 and protrudes to the end face of the support frame 210, the blade 320 protrudes outside the rotating groove 211, and the paper can be cut.

[0038] In this embodiment, the knob head 400 is arranged outside one side of the rotating groove 211, that is, the knob head 400 is arranged outside one side of a support frame 210, and the blade can rotate to protrude outside one end of the support frame 210, that is, outside the notch of the rotating groove 211.

[0039] The first fixing structure and the second fixing structure cooperate with each other to fix the angle between the knob head 400 and the support frame 210. Since the knob head 400 rotates synchronously with the fixing frame 310 and the angle between the knob head 400 and the support frame 210 is fixed, the angle between the fixing frame 310 and the support frame 210 is fixed. Therefore, the angle of the blade 320 relative to the support frame 210 is also fixed.

[0040] Specifically, the knob head 400 is movably connected to the fixing frame 310 in the direction parallel to the axial direction of the circular rotating part 330. In this way, the knob head 400 can move away from the support frame 210 in the direction parallel to the axial direction of the circular rotating part 330. Pull the knob head 400 along the direction away from the support frame 210, and the knob head 400 overcomes the elastic force of the elastic member and moves away from the support frame 210, so that the second fixing structure disengages from the first fixing structure. At this time, rotate the knob head 400. Since the knob head 400 rotates synchronously with the fixing frame 310, the knob head 400 drives the fixing frame 310 to rotate, so that the blade 320 on the fixing frame 310 rotates accordingly. In this way, the user can select a suitable blade 320 by rotating the knob head 400. When the blade 320 rotates with the fixing frame 310 and protrudes to the end face of the support frame 210, the blade 320 can be used for cutting.

[0041] After the user selects the blade 320, the knob head 400 is released. Under the elastic force of the elastic member, the knob head 400 resets and moves towards the support frame 210 in a direction parallel to the axial direction of the circular rotating portion 330, so that the second fixing structure cooperates with the first fixing structure, thereby fixing the angle of the knob head 400, and further fixing the angle of the fixing frame 310 relative to the support frame 210. In this way, the position of the blade 320 is fixed, enabling the user to use the selected blade 320 for cutting.

[0042] In the above embodiment, by setting the knob head 400 to be movable in a direction parallel to the axial direction of the circular rotating portion 330, the knob head 400 can be pulled out so that the second fixing structure disengages from the first fixing structure, enabling the angles of the blade 320 and the fixing frame 310 to be adjustable. Subsequently, under the elastic force of the elastic member, the second fixing structure approaches the first fixing structure, and the second fixing structure and the first fixing structure cooperate to fix the rotation angle of the knob head 400, thereby fixing the position of the blade 320, realizing the switching of the blade 320. Compared with the traditional buckle structure, the above structure is simple and has a lower installation difficulty, which is beneficial to reducing production costs.

[0043] In order to position the rotation angle of the knob head 400, in one embodiment, please refer to Figure 2 , Figure 4 and Figure 5 , the first fixing structure is a positioning hole 213 provided on the support frame 210, the second fixing structure is a positioning post 410 protruding from the surface of the knob head 400 facing the support frame 210, the positioning post 410 is movably inserted into the positioning hole 213, and the number of at least one of the positioning hole 213 and the positioning post 410 is equal to the number of blades 320, and the distribution angle of at least one of the positioning hole 213 and the positioning post 410 in a direction parallel to the radial direction of the circular rotating portion 330 is equal to the distribution angle of the blade 320 in a direction parallel to the radial direction of the circular rotating portion 330.

[0044] In this embodiment, when the knob head 400 rotates to a position where the corresponding blade 320 protrudes outside the rotating groove 211, under the elastic force of the elastic member, the positioning post 410 is inserted into the positioning hole 213. By inserting the mutually aligned positioning posts 410 into the positioning holes 213, the support frame 210 is used to fix the angle of the knob head 400 and restrict the rotation of the knob head 400. In this way, the rotation of the fixing frame 310 can be restricted. It is worth mentioning that the number of positioning holes 213 is equal to the number of blades 320, or the number of positioning posts 410 is equal to the number of blades 320, or the number of both positioning holes 213 and positioning posts 410 is equal to the number of blades 320.

[0045] In this way, the number of fixable angles of the knob head 400 corresponds to the number of blades 320. For example, for three blades 320, three angles can be fixed. In this way, when any blade 320 is rotated to protrude outside the rotation groove 211, the position of the blade 320 can be fixed by inserting the corresponding positioning post 410 into the positioning hole 213. In addition, it should be understood that when the number of positioning holes 213 is equal to the number of blades 320, such as three, the number of positioning posts 410 can be only one. For example, when the positioning post 410 is rotated to align with one positioning hole 213 and inserted into the positioning hole 213, the angle of the knob head 400 can be fixed. When the positioning post 410 is rotated to align with another positioning hole 213 and inserted into this positioning hole 213, the angle of the knob head 400 can be fixed. Conversely, when the number of positioning posts 410 is equal to the number of blades 320, such as three, the number of positioning holes 213 can be only one. In this way, when one of the positioning posts 410 is inserted into the positioning hole 213, the angle of the knob head 400 can be fixed. In this case, in order to prevent the other two positioning posts 410 from abutting against the surface of the support frame 210 and causing one of the positioning posts 410 to be unable to be inserted into the positioning hole 213, an avoidance groove can be provided on the support frame 210 along the rotation trajectory of the positioning post 410.

[0046] In order to enable the positioning post 410 and the positioning hole 213 to better fix the angle of the knob head 400, in one embodiment, the number of the positioning posts 410 and the positioning holes 213 are both equal to the number of the blades 320, and the distribution angles of the positioning posts 410 and the positioning holes 213 are equal to the distribution angle of the blades 320. In this way, through the cooperation of multiple positioning posts 410 and multiple positioning holes 213, the knob head 400 can be better fixed, and further the blade 320 can be better fixed.

[0047] In addition, the angle at which the positioning holes 213 are distributed with the center of the circular rotating part 330 as the center in the direction parallel to the radial direction of the circular rotating part 330 is equal to the angle at which the blades 320 are distributed in the direction parallel to the radial direction of the circular rotating part 330; the angle at which the positioning posts 410 are distributed with the center of the circular rotating part 330 as the center in the direction parallel to the radial direction of the circular rotating part 330 is equal to the angle at which the blades 320 are distributed in the direction parallel to the radial direction of the circular rotating part 330. In this way, when the knob head 400 rotates from one positioning post 410 aligning with one positioning hole 213 to another positioning post 410 aligning with another positioning hole 213, the rotation angle is the same as the angle at which the fixing frame 310 rotates to switch between two blades 320.

[0048] In some other embodiments, the number of blades 320 is two, and correspondingly, the number of positioning holes 213 and / or positioning posts 410 is two. In some other embodiments, the number of blades 320 is four, and correspondingly, the number of positioning holes 213 and / or positioning posts 410 is four.

[0049] In another embodiment, the first fixing structure is a positioning post protruding from the surface of the support frame facing the knob head, and the second fixing structure is a positioning hole provided on the knob head. The positioning post is movably inserted into the positioning hole, and the number of at least one of the positioning hole and the positioning post is equal to the number of blades. The distribution angle of at least one of the positioning hole and the positioning post in the direction parallel to the radial direction of the circular rotating part is equal to the distribution angle of the blades in the direction parallel to the radial direction of the circular rotating part. In this embodiment, the angle fixation of the knob head can be achieved, and the principle is the same as that of the previous embodiment, so no redundant description is given in this embodiment.

[0050] In some other embodiments, the first fixing structure is a clamping block protruding from the surface of the support frame facing the knob head, and the second fixing structure is a notch groove provided on the outer circumference of the knob head. When the notch groove is aligned with the clamping block, the knob head approaches the support frame under the elastic force of the elastic member, so that the notch groove is sleeved on the clamping block.

[0051] To facilitate the sliding of the cutting tool 100 on the cutting table 600 of the cutting machine 10, in one embodiment, as Figure 4 and Figure 5 shown, sliding portions 220 are respectively protruded from the end portions of each support frame 210 to the outer sides on both sides.

[0052] In this embodiment, by providing the sliding portions 220, the contact area with the cutting table 600 can be increased, so that the cutting tool 100 slides more smoothly on the cutting table 600. In addition, the sliding portions 220 can also cooperate with the guide rails on the cutting table 600. For example, the sliding portions 220 are embedded in the chute of the guide rail to slide, thereby effectively preventing the cutting tool 100 from falling off the cutting table 600.

[0053] To achieve cutting with different effects, in one embodiment, the number of blades 320 is three, and the three blades 320 are arranged around the circular rotating part 330 at equal angles with the center of the circular rotating part 330 as the center. The three blades 320 include a straight-edge blade, a curved-edge blade, and a virtual-edge blade.

[0054] In one embodiment, as Figures 3 to 5As shown, an indication mark 450 is provided on the knob head 400. Each indication mark 450 corresponds to one of the blades 320. The indication mark 450 includes a straight-edge blade mark, a curved-edge blade mark, and a virtual-edge blade mark. In this way, the indication marks for the straight-edge blade, the curved-edge blade, and the virtual-edge blade are respectively set on the knob head 400, and the user can conveniently and intuitively rotate the straight-edge blade, the curved-edge blade, and the virtual-edge blade to the required positions according to needs. As Figure 7A shown, the straight-edge blade is circular, and its edge is a cutting edge with a straight shape, as Figure 7B shown, the curved-edge blade is circular, and the shape of the cutting edge at its edge is wavy, as Figure 7C shown, the virtual-edge blade is circular, and the shape of the cutting edge at its edge is discontinuously disconnected. In this way, by rotating the fixing frame 310, the switching of the blade 320 can be realized, and thus different cutting effects can be achieved.

[0055] In order to realize the synchronous rotation of the knob head 400 and the fixing frame 310, in one embodiment, as Figure 2 shown, a spline groove 401 is provided on the surface of the knob head 400 facing the fixing frame 310, as Figure 3 and Figure 4 shown, a spline portion 340 is convexly provided on one surface of the fixing frame 310. The spline portion 340 is movably inserted into the spline groove 401, and the central axis of the spline portion 340 coincides with the central axis of the circular rotating portion 330.

[0056] In this embodiment, the cooperation of the spline groove 401 and the spline portion 340 fixes the knob head 400 and the fixing frame 310 to each other in the rotation direction of the circular rotating portion 330 to realize the synchronous rotation of the knob head 400 and the fixing frame 310. In addition, the cooperation of the spline groove 401 and the spline portion 340 can also fix the knob head 400 relative to the fixing frame 310 in the direction parallel to the axial direction of the circular rotating portion 330, that is, the spline portion 340 is inserted and pulled out along the depth direction of the spline groove 401. In this way, the knob head 400 can be close to or far from the support frame 210, and after being far from the support frame 210, the fixing frame 310 can still be driven to rotate through the cooperation of the spline groove 401 and the spline portion 340.

[0057] It is worth mentioning that the cross-sectional shape of the spline groove 401 is quadrilateral, and the cross-sectional shape of the spline portion 340 is quadrilateral. In some embodiments, the cross-sectional shape of the spline groove 401 can be triangular, pentagonal, hexagonal, or wedge-shaped, and the cross-sectional shape of the spline portion 340 can be triangular, pentagonal, hexagonal, or wedge-shaped that matches the cross-sectional shape of the spline groove 401. In addition, the cross-sectional shapes of the spline groove 401 and the spline portion 340 can also be other shapes, which will not be listed one by one here.

[0058] In another embodiment, a spline portion is provided on the knob head near a protrusion facing the fixing frame, the fixing frame is provided with a spline groove, and the spline portion is movably inserted in the spline groove. In some other embodiments, the spline portion can be replaced by saw teeth, gears, protrusions provided on the shaft, etc., and the spline groove makes the same cooperation with the spline portion, which are not listed one by one.

[0059] In order to provide elastic force for the knob head 400, in one embodiment, the elastic member is a spring (not shown). In this embodiment, the spring is sleeved on the spline portion. One end of the spring is connected to the support frame 210, and the other end is connected to the knob head 400, thereby providing elastic force for the knob head 400.

[0060] In order to make the fixing frame 310 rotate more flexibly, in one embodiment, the cross-section of the fixing frame 310 is circular, so that the weight distribution of the fixing frame 310 can be more even, and the fixing frame 310 can rotate more flexibly.

[0061] In one embodiment, Figure 6 As shown, the fixed frame 310 includes a first clamping frame 311 and a second clamping frame 312, one end of each rotating shaft 350 is connected to the first clamping frame 311, and the other end of each rotating shaft 350 is connected to the second clamping frame 312, the first clamping frame 311 and the second clamping frame 312 are connected by screws, and a gap is formed between the first clamping frame 311 and the second clamping frame 312, each of the blades 320 is arranged on the rotating shaft 350 and is located in the gap between the first clamping frame 311 and the second clamping frame 312, and each of the blades 320 at least partially protrudes to the outside of the gap between the first clamping frame 311 and the second clamping frame 312.

[0062] In this embodiment, the first clamping frame 311 and the second clamping frame 312 are circular in shape. When installing, the blade 320 is sleeved on the rotating shaft 350, and then the rotating shaft 350 is placed between the first clamping frame 311 and the second clamping frame 312. The first clamping frame 311 and the second clamping frame 312 are fixed by screwing screws into the screw holes of the first clamping frame 311 and the second clamping frame 312, so that the blade 320 is installed between the first clamping frame 311 and the second clamping frame 312. Through the above structure, the blade 320 and the fixing frame 310 are more convenient to install and disassemble.

[0063] In order to allow the blade 320 to protrude to the outside of the first clamping frame 311 and the second clamping frame 312, in one embodiment, as shown in FIG. Figure 6As shown in the figure, on the edge of the side of the second clamping frame 312 facing the first clamping frame 311, a plurality of second isolation parts 312a are protrudingly arranged. The second isolation parts 312a are spaced from each other, and a second accommodation groove 312b is formed between adjacent second isolation parts 312a. When the first clamping frame 311 and the second clamping frame 312 are connected to each other, the first clamping frame 311 abuts against the second isolation parts 312a, and a gap is formed between the first clamping frame 311 and the second accommodation groove 312b. The number of the gaps is equal to the number of the blades 320, and each blade 320 protrudes at least partially to the outside of a gap. In this way, the blades 320 can be isolated from each other by the plurality of second isolation parts, and the blades 320 can be accommodated in the second accommodation groove, and the blades 320 can protrude to the outside of the first clamping frame 311 and the second clamping frame 312.

[0064] In another embodiment, on the edge of the side of the first clamping frame facing the second clamping frame, a plurality of first isolation parts are protrudingly arranged. The first isolation parts are spaced from each other, and a first accommodation groove is formed between adjacent first isolation parts. On the edge of the side of the second clamping frame facing the first clamping frame, a plurality of second isolation parts are protrudingly arranged. The second isolation parts are spaced from each other, and a second accommodation groove is formed between adjacent second isolation parts. When the first clamping frame and the second clamping frame are connected to each other, the first isolation parts and the second isolation parts abut against each other, and the first accommodation groove and the second accommodation groove are combined to form a gap. The number of the gaps is equal to the number of the blades, and each blade protrudes at least partially to the outside of a gap. In this way, the blades can be isolated from each other by the plurality of first isolation parts and the second isolation parts, and the blades can be accommodated in the first accommodation groove and the second accommodation groove, and the blades can protrude to the outside of the first clamping frame and the second clamping frame.

[0065] In one embodiment, as Figure 4 shown, an accommodation cavity 201 is formed inside the support base 200. Two support frames 210 are arranged inside the accommodation cavity 201 and are connected to the side wall of the accommodation cavity 201. The knob head 400 is arranged inside the accommodation cavity 201. The support base 200 is provided with a movable hole 202. One end of the knob head 400 away from the support frame 210 passes through the movable hole 202 and is at least partially arranged outside the accommodation cavity 201, and the width of one end of the knob head 400 close to the support frame 210 is greater than the width of the movable hole 202.

[0066] In this embodiment, the support base 200 is provided as a cylinder with a hollow interior. An accommodation cavity 201 is formed inside the support base 200, enabling the support frame 210, the fixed frame 310, and the knob head 400 to be installed within the accommodation cavity 201. Since the width of the end of the knob head 400 near the support frame 210 is greater than the width of the movable hole 202, the knob head 400 can be prevented from passing through the movable hole 202 and detaching, restricting the travel of the knob head 400 and also preventing the knob head 400 from falling off the fixed frame 310 and the spline groove from falling off the spline portion.

[0067] In one embodiment, as Figure 3 and Figure 4 shown, a stop portion 440 is provided to protrude outward at the end of the knob head 400 near the support frame 210. The diameter of the stop portion 440 is greater than the width of the movable hole 202, and the stop portion 440 is movably abutted against the side wall of the accommodation cavity 201 at the position outside the movable hole 202. In this way, by providing the stop portion 440, the knob head 400 can be effectively stopped to prevent it from falling off.

[0068] To facilitate the installation of the knob head 400 and the fixed frame 310 within the support base 200, in one embodiment, as Figures 2 to 5 shown, the support base 200 includes a first support sub-base 230 and a second support sub-base 240. The first support sub-base 230 is provided with a first sub-groove 202a, and the second support sub-base 240 is provided with a second sub-groove 202b. The end face of one end of the first support sub-base 230 abuts against the end face of one end of the second support sub-base 240. The first sub-groove 202a and the second sub-groove 202b are combined to form the movable hole 202, and the first support sub-base 230 and the second support sub-base 240 are connected by screws.

[0069] In this embodiment, the support base 200 is divided into two parts, namely the first support sub-base 230 and the second support sub-base 240. During installation, the knob head 400 can be first installed within the first support sub-base 230 and the second support sub-base 240, and then the first support sub-base 230 and the second support sub-base 240 are combined. The first sub-groove and the second sub-groove are sleeved outside the knob head 400 to form the movable hole 202. Subsequently, screws are screwed into the screw holes of the first support sub-base 230 and the second support sub-base 240 to fix the first support sub-base 230 and the second support sub-base 240. In this way, the installation of the knob head 400 is more convenient and the disassembly is also more convenient. Through the above structure, the installation of the knob head 400 can be made more convenient and it is beneficial to reduce production costs.

[0070] In one embodiment, as Figure 4 and Figure 5As shown, a first sub-cavity is provided inside the first support sub-seat 230, and a second sub-cavity is provided inside the second support sub-seat 240. Two spaced and parallel first sub-frames 210a are provided inside the first sub-cavity. Each first sub-frame 210a is provided with a first semi-rotating hole. Two spaced and parallel second sub-frames 210b are provided inside the second sub-cavity. Each second sub-frame 210b is provided with a second semi-rotating hole. When the end face of one end of the first support sub-seat 230 abuts against the end face of one end of the second support sub-seat 240, the two first sub-frames 210a and the two second sub-frames 210b abut against each other one by one. The first sub-frame 210a and the second sub-frame 210b are connected to form the support frame 210, and each first semi-rotating hole and a second semi-rotating hole are combined to form the rotating hole 212.

[0071] In this embodiment, the first sub-frame 210a and the second sub-frame 210b are connected to form the support frame 210. In this way, during installation, the circular rotating part 330 can be first placed between the first semi-rotating hole and the second semi-rotating hole. Subsequently, the first sub-frame 210a and the second sub-frame 210b are combined so that the first semi-rotating hole and the second semi-rotating hole are combined, and the circular rotating part 330 is located in the rotating hole 212. Subsequently, screws are screwed into the screw holes of the first support sub-seat 230 and the second support sub-seat 240 to fix the first support sub-seat 230 and the second support sub-seat 240. The first sub-frame 210a and the second sub-frame 210b are firmly abutted, thereby stably restricting the circular rotating part 330 in the rotating hole 212, so that the fixing frame 310 can rotate smoothly in the rotating groove 211. Through the above structure, the installation of the fixing frame 310 can be made more convenient, and it is beneficial to reduce production costs.

[0072] In one embodiment, as Figure 1 shown, a cutting machine 10 is provided, including the cutting tool 100 described in any of the above embodiments.

[0073] In this embodiment, the cutting machine 10 includes a cutting tool 100 and a cutting table 600. The cutting tool 100 is slidably arranged on the cutting table 600. The cutting table 600 is provided with a tool groove, and the blade 320 of the cutting tool 100 is arranged in the tool groove.

[0074] In the cutting tool 100 of this embodiment, by setting the knob head 400 to be movable in a direction parallel to the axial direction of the circular rotating part 330, the knob head 400 can be pulled out so that the second fixing structure is separated from the first fixing structure, enabling the angles of the blade 320 and the fixing bracket 310 to be adjustable. Subsequently, due to the elastic force of the elastic member, the second fixing structure approaches the first fixing structure, and the second fixing structure and the first fixing structure cooperate to fix the rotation angle of the knob head 400, thereby fixing the position of the blade 320 and realizing the switching of the blade 320. Compared with the traditional snap structure, the above structure is simple and has a lower installation difficulty, which is beneficial to reducing production costs.

[0075] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0076] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A cutting tool, characterized in that: include: Support seat, blade assembly, knob head, elastic part; The support seat is provided with two support frames spaced apart and arranged in parallel, a rotation groove is formed between the two support frames, a rotation hole is opened on the side wall of at least one side of the rotation groove, and a first fixing structure is provided on the support frame; The blade assembly comprises a fixed frame and at least two blades, each of the blades is rotatably arranged on the fixed frame via a rotating shaft, the blades have different shapes, the fixed frame is provided with a circular rotating portion protruding in a direction parallel to the axial direction of the rotating shaft, the circular rotating portion is rotatably arranged in the rotating hole, the fixed frame is rotatably arranged in the rotating groove, the blades are arranged around the circular rotating portion with the center of the circular rotating portion as the center of the circle, and each of the blades at least partially protrudes to the outside of the rotating groove when the fixed frame rotates to a preset angle; The knob head is arranged on the outside of the rotating groove, the knob head and the circular rotating part of the fixing frame are coaxially arranged, and the knob head and the fixing frame rotate synchronously, the knob head is movably connected to the fixing frame in the axial direction parallel to the circular rotating part, one end of the elastic member is connected to the support seat, and the other end of the elastic member is connected to the knob head, the knob head is provided with a second fixing structure, the second fixing structure of the knob head cooperates with the first fixing structure under the elastic force of the elastic member to fix the angle of the fixing frame in the rotating groove, and the number of the first fixing structures and at least one of the second fixing structures is equal to the number of the blades.

2. The cutting tool according to claim 1, characterized in that: The first fixing structure is a positioning hole arranged on the support frame, and the second fixing structure is a positioning column protruding from the side of the knob head facing the support frame, and the positioning column is movably inserted into the positioning hole. The number of at least one of the positioning holes and the positioning columns is equal to the number of blades, and the distribution angle of at least one of the positioning holes and the positioning columns in a direction parallel to the radial direction of the circular rotating part is equal to the distribution angle of the blades in a direction parallel to the radial direction of the circular rotating part.

3. The cutting tool according to claim 1, characterized in that: The end portions of each support frame are respectively protruded toward the outer sides on both sides to form a sliding portion.

4. The cutting tool according to claim 1, characterized in that: The number of the blades is three, and the three blades are arranged around the circular rotating part at equal angles with the center of the circular rotating part as the center of the circle. The three blades include a straight edge blade, a curved edge blade and a virtual edge blade.

5. The cutting tool according to claim 1, characterized in that: A spline groove is arranged on one side of the knob head facing the fixing frame, a spline portion is convexly arranged on one side of the fixing frame, the spline portion is movably inserted in the spline groove, and the central axis of the spline portion coincides with the central axis of the circular rotating portion.

6. The cutting tool according to claim 1, characterized in that: The fixed frame includes a first clamping frame and a second clamping frame, one end of each rotating shaft is connected to the first clamping frame, and the other end of each rotating shaft is connected to the second clamping frame, the first clamping frame and the second clamping frame are connected by screws, and a gap is formed between the first clamping frame and the second clamping frame, each of the blades is arranged on the rotating shaft and is located in the gap between the first clamping frame and the second clamping frame, and each of the blades at least partially protrudes to the outside of the gap between the first clamping frame and the second clamping frame.

7. The cutting tool according to any one of claims 1 to 6, characterized in that: A accommodating cavity is formed on the inner side of the support seat, the two support frames are arranged in the accommodating cavity and connected to the side walls of the accommodating cavity, the knob head is arranged in the accommodating cavity, the support seat is provided with a movable hole, the end of the knob head away from the support frame passes through the movable hole, and is at least partially arranged on the outside of the accommodating cavity, and the width of the knob head at one end close to the support frame is greater than the width of the movable hole.

8. The cutting tool according to claim 7, characterized in that: The support seat includes a first support sub-seated and a second support sub-seated, the first support sub-seated is provided with a first sub-groove, the second support sub-seated is provided with a second sub-groove, an end face of one end of the first support sub-seated is abutted against an end face of one end of the second support sub-seated, the first sub-groove and the second sub-groove are combined to form the movable hole, and the first support sub-seated is connected to the second support sub-seated by screws.

9. The cutting tool according to claim 8, characterized in that: A first sub-cavity is provided on the inner side of the first supporting sub-base, and a second sub-cavity is provided on the inner side of the second supporting sub-base. Two first sub-frames are provided in parallel and at intervals in the first sub-cavity, and each of the first sub-frames is provided with a first rotating half-hole. Two second sub-frames are provided in parallel and at intervals in the second sub-cavity, and each of the second sub-frames is provided with a second rotating half-hole. When the end face of one end of the first supporting sub-base abuts the end face of one end of the second supporting sub-base, the two first sub-frames and the two second sub-frames abut one-to-one, the first sub-frame and the second sub-frame are connected to form the supporting frame, and each of the first rotating half-hole and one of the second rotating half-holes are combined to form the rotating hole.

10. A cutting machine, characterized in that: The invention comprises the cutting tool as described in any one of claims 1 to 9.

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