A cutting machine with a fillet cutting function

Abstract

The utility model relates to paper processing equipment technical field especially relates to a paper cutting machine with round corner function, it includes frame, side frame, right angle board, rotating rod, first lifting frame, linkage assembly, second lifting frame, first guide rail, sixth guide rail, linear cutter and round corner cutter, first guide rail sets up on side frame, first lifting frame is connected with first guide rail sliding, rotating rod rotates and drives first lifting frame and moves along first guide rail, linear cutter sets up on first lifting frame, sixth guide rail sets up on side frame along vertical direction, second lifting frame is connected with sixth guide rail sliding, first lifting frame is transmission connection with second lifting frame through linkage assembly, round corner cutter sets up on second lifting frame. Through single rotating rod drive lifting frame, synchronous control linear cutter and round corner cutter complete cutting edge and cutting angle, do not need to carry out the switching of equipment or tool additionally.

Description

Technical Field

[0001] This utility model relates to the field of paper processing equipment technology, and in particular to a paper cutter with a rounded corner cutting function. Background Technology

[0002] Traditional paper cutters are mainly used for straight-line cutting of paper, but in some applications, it is necessary to round the edges of the paper to enhance aesthetics or prevent sharp corners from causing injury. In existing technologies, rounding usually requires the use of an additional rounding cutter or mold, and is done manually or with another piece of equipment, resulting in a complex operation process, low production efficiency, and increased equipment costs and floor space. Utility Model Content

[0003] The technical problem to be solved by this utility model is to solve at least one of the technical problems mentioned above.

[0004] The solution to the technical problem of this utility model is: a paper cutter with a rounded corner cutting function, comprising a frame, a side frame, a right-angle plate, a rotating rod, a first lifting frame, a linkage assembly, a second lifting frame, a first guide rail, a sixth guide rail, a straight cutter, and a rounded corner cutter. The frame is provided with an edge-cutting station and a corner-cutting station. The side frame is mounted on the frame and has an opening for paper to pass through, the opening communicating with the edge-cutting station. The first guide rail is mounted on the side frame, and the first lifting frame is slidably connected to the first guide rail. The middle part of the rotating rod is hinged to the side frame, one end of the rotating rod is hinged to the first lifting frame, and the other end of the rotating rod has a handle. The rotation of the rotating rod drives the first lifting frame to move along the first guide rail. The straight cutter is mounted on the first lifting frame and located at the edge cutting station. The sixth guide rail is mounted vertically on the side frame. The second lifting frame is slidably connected to the sixth guide rail. The linkage component is mounted on the first lifting frame. When the first lifting frame moves, the linkage component can drive the second lifting frame to move synchronously along the sixth guide rail. The right-angle plate is mounted on the frame and located at the corner cutting station. The right-angle plate is used for corner positioning of the paper. The rounded corner cutter is mounted on the second lifting frame, and its cutting edge trajectory is adapted to the inner edge contour of the right-angle plate.

[0005] As a further improvement to the above technical solution, the linkage component includes a roller and a seventh guide rail. The roller is disposed at one end of the first lifting frame and can rotate relative to the first lifting frame. The seventh guide rail is horizontally disposed on the second lifting frame, and the roller is rotatably connected to the seventh guide rail.

[0006] As a further improvement to the above technical solution, a paper pressing assembly is also included. The paper pressing assembly includes a first driving device, a connecting plate, a second guide rail, a third guide rail, a first limiting groove, a second limiting groove, a limiting part, and a first pressure plate. The second guide rail is horizontally disposed on the side frame, and the connecting plate is slidably connected to the second guide rail. The first driving device is disposed on the side frame and is used to drive the connecting plate to move along the second guide rail. The first limiting groove is horizontally disposed on the connecting plate, and the second limiting groove is vertically disposed on the first pressure plate. The limiting part is fixed on the side frame and passes through the first limiting groove and the second limiting groove to restrict the first pressure plate from moving in the vertical direction. The third guide rail is inclinedly disposed on the connecting plate, and the first pressure plate is slidably connected to the third guide rail. The bottom surface of the first pressure plate is used to press the upper surface of the paper passing through the opening.

[0007] As a further improvement to the above technical solution, the first driving device includes a first knob, a driving screw and a screw nut. The driving screw is horizontally arranged on the side frame and can rotate relative to the side frame. The first knob is arranged at one end of the driving screw and is coaxially rotatable with the driving screw. The screw nut is threadedly connected to the driving screw and is fixedly connected to the connecting plate.

[0008] As a further improvement to the above technical solution, an alignment component is also included. The alignment component includes a fourth guide rail, a second knob, a gear, a rack, and a positioning ruler. The fourth guide rail is disposed on the frame, and its extension direction is perpendicular to the length direction of the side frame. The positioning ruler is slidably connected to the fourth guide rail. The rack is disposed on the frame and is parallel to the fourth guide rail. The second knob is disposed at one end of the positioning ruler and is rotatable relative to the positioning ruler. The gear is disposed on the second knob and is coaxially rotatable with the second knob. The gear meshes with the rack.

[0009] As a further improvement to the above technical solution, the first lifting frame and the straight cutter are detachably connected by screws, and the second lifting frame and the rounded corner cutter are detachably connected by screws.

[0010] As a further improvement to the above technical solution, an elastic pressure plate assembly is also included. The elastic pressure plate assembly includes a bracket, an elastic element, and a second pressure plate. The bracket is disposed on the side of the second lifting frame near the right-angle plate. One end of the elastic element is connected to the bracket, and the other end of the elastic element is connected to the second pressure plate. The elastic element has a tendency to push the second pressure plate toward the frame. The second pressure plate is used to elastically press the corner of the paper onto the frame during rounded corner cutting.

[0011] As a further improvement to the above technical solution, an anti-fall component is also included. The anti-fall component includes a torsion spring and an abutment member. The abutment member is hinged to the side frame and has an abutment end for abutting against the lower surface of the first lifting frame. The torsion spring is connected to the abutment member, and the other end of the torsion spring is connected to the frame. The torsion spring has a tendency to turn the abutment end towards the first lifting frame.

[0012] As a further improvement to the above technical solution, a collection device is also included. The collection device includes a collection box and a fifth guide rail. The fifth guide rail is disposed on the frame, and the collection box is slidably connected to the fifth guide rail. The collection box is located below the chamfering station.

[0013] As a further improvement to the above technical solution, the bottom of the frame is provided with an anti-slip part.

[0014] The beneficial effects of this utility model are as follows: the frame provides a basic support structure; the opening on the side frame connects to the cutting station, guiding the paper into the cutting station; the right-angle plate positions the corners of the paper, ensuring accurate paper positioning during rounded corner cutting; rotating the handle drives the rotating rod to rotate, thereby driving the lifting frame to rise and fall along the first guide rail, thus controlling the lifting and lowering actions of the straight cutter and the rounded corner cutter; the cutting edge of the straight cutter can complete a straight cut on the paper passing through the opening; the cutting edge of the rounded corner cutter, in contact with the edge of the right-angle plate, completes the cutting of the paper corners, realizing the rounded corner processing function. Straight cutting and rounded corner cutting functions are integrated on the same machine, eliminating the need for additional equipment or tool switching, thus improving production efficiency; no additional specialized rounded corner cutting equipment is required, saving space and reducing equipment costs; the lifting frame is driven by a single rotating rod, enabling simultaneous control of the actions of the straight cutter and the rounded corner cutter, reducing operational complexity; the right-angle plate is used for paper corner positioning, and the rounded corner cutter is in contact with the edge of the right-angle plate, ensuring consistent rounded corner cutting. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of one embodiment of this utility model; Figure 2 This is a second structural schematic diagram of one embodiment of this utility model; Figure 3 This is an exploded view of one embodiment of this utility model.

[0016] Reference numerals in the attached drawings: 100-frame, 110-side frame, 111-opening, 120-right-angle plate, 130-edge cutting station, 140-corner cutting station, 200-rotating rod, 201-handle, 210-first lifting frame, 220-linkage assembly, 221-roller, 222-seventh guide rail, 230-second lifting frame, 240-first guide rail, 250-sixth guide rail, 260-straight cutter, 270-rounded corner cutter, 300-first drive device, 301- First knob, 302-Drive screw, 303-Screw nut, 310-Connecting plate, 320-Second guide rail, 330-Third guide rail, 340-First limiting groove, 350-Second limiting groove, 360-Limiting part, 370-First pressure plate, 400-Fourth guide rail, 410-Second knob, 420-Positioning ruler, 500-Bracket, 510-Elastic element, 520-Second pressure plate, 600-Torsion spring, 610-Abutting element, 611-Abutting end, 700-Collection box. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of this utility model, not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0019] Traditional paper cutters are mainly used for straight-line cutting of paper, but in some applications, it is necessary to round the edges of the paper to enhance aesthetics or prevent sharp corners from causing injury. In existing technologies, rounding usually requires the use of an additional rounding cutter or mold, and is done manually or with another piece of equipment, resulting in a complex operation process, low production efficiency, and increased equipment costs and floor space.

[0020] Therefore, this utility model proposes a paper cutter with a rounded corner cutting function, referring to... Figures 1-3The system includes a frame 100, a side frame 110, a right-angle plate 120, a rotating rod 200, a first lifting frame 210, a linkage assembly 220, a second lifting frame 230, a first guide rail 240, a sixth guide rail 250, a straight cutter 260, and a rounded corner cutter 270. The frame 100 has a trimming station 130 and a corner trimming station 140. The side frame 110 is mounted on the frame 100 and has an opening 111 for paper to pass through, which communicates with the trimming station 130. The first guide rail 240 is mounted on the side frame 110, and the first lifting frame 210 is slidably connected to the first guide rail 240. The middle part of the rotating rod 200 is hinged to the side frame 110, one end of the rotating rod 200 is hinged to the first lifting frame 210, and the other end of the rotating rod 200 has a handle 201. The rotation of 200 drives the first lifting frame 210 to move along the first guide rail 240. The straight cutter 260 is mounted on the first lifting frame 210 and located at the edge cutting station 130. The sixth guide rail 250 is mounted vertically on the side frame 110. The second lifting frame 230 is slidably connected to the sixth guide rail 250. The linkage component 220 is mounted on the first lifting frame 210. When the first lifting frame 210 moves, the linkage component 220 can drive the second lifting frame 230 to move synchronously along the sixth guide rail 250. The right-angle plate 120 is mounted on the frame 100 and located at the corner cutting station 140. The right-angle plate 120 is used for corner positioning of paper. The rounded corner cutter 270 is mounted on the second lifting frame 230, and its cutting edge trajectory is adapted to the inner edge contour of the right-angle plate 120.

[0021] The frame 100 provides the basic support structure; the opening 111 on the side frame 110 connects to the cutting station 130, guiding the paper into the cutting station 130; the right-angle plate 120 positions the corners of the paper, ensuring accurate paper positioning during rounded corner cutting; rotating the handle 201 drives the rotating rod 200 to rotate, thereby driving the first lifting frame 210 to rise and fall along the first guide rail 240, thus controlling the rising and falling motion of the linear cutter 260; the cutting edge of the linear cutter 260 can complete the cutting of paper passing through the opening 111. The paper is cut in a straight line; the first lifting frame 210 is connected to the second lifting frame 230 through the linkage component 220. When the first lifting frame 210 moves down, it pushes the second lifting frame 230 to move down synchronously along the sixth guide rail 250, so as to realize the linkage with the action of the first lifting frame 210, and drive the rounded corner cutter 270 to perform rounded corner cutting operation on the positioned corner of the paper; the cutting edge trajectory of the rounded corner cutter 270 is adapted to the inner edge contour of the right angle plate 120, which can ensure the accuracy of rounded corner cutting and improve the processing quality. The machine integrates straight-line cutting and rounded corner cutting functions on the same device, eliminating the need for additional equipment or tool switching and improving production efficiency. It also eliminates the need for separate rounded corner cutting equipment, saving space and reducing equipment costs. The lifting frame is driven by a single rotating rod 200, which can simultaneously control the movements of the straight-line cutter 260 and the rounded corner cutter 270, reducing the complexity of operation. A right-angle plate 120 is provided for positioning the corners of the paper, and the rounded corner cutter 270 fits against the edge of the right-angle plate 120 to ensure the consistency of rounded corner cutting.

[0022] During straight-line cutting, the paper is fed into the cutting station 130 through the opening 111 on the side frame 110. The rotation of the rotating rod 200 drives the first lifting frame 210, which is hinged to it, to rise and fall along the first guide rail 240 on the side frame 110. As the first lifting frame 210 descends, the straight-line cutter 260 mounted on it reaches the appropriate cutting position, at which point the cutting edge of the straight-line cutter 260 makes a straight cut on the paper. After cutting, the rotating rod 200 is rotated in the opposite direction to raise the first lifting frame 210, and the cut paper can then be removed for the next round of operation. During rounded-corner cutting, the paper passes through... The right-angle plate 120 is aligned and placed at the corner cutting station 140. When the rotating rod 200 rotates, it drives the first lifting frame 210, which is hinged to it, to descend along the first guide rail 240. The first lifting frame 210 is connected to the second lifting frame 230 through the linkage component 220. At the same time, it pushes the second lifting frame 230 to move down synchronously along the sixth guide rail 250. The rounded corner cutter 270 installed on the second lifting frame 230 also descends accordingly. When it descends to the appropriate position, the cutting edge of the rounded corner cutter 270 cuts the corner of the paper to complete the rounded corner treatment. Then, the rotating rod 200 is rotated in the opposite direction to make the second lifting frame 230 rise and return to its original position, ready for subsequent operations. By using the rotation of the rotating rod 200, the first lifting frame 210, which is hinged to it, is driven to move up and down along the first guide rail 240. The linkage component 220 pushes the second lifting frame 230 to move along the sixth guide rail 250, combining the two actions of edge cutting and rounded corner cutting in an orderly manner, and completing the two cutting operations sequentially at different stations of the same machine.

[0023] In one embodiment, the linkage component 220 includes a roller 221 and a seventh guide rail 222. The roller 221 is disposed at one end of the first lifting frame 210 and is rotatable relative to the first lifting frame 210. The seventh guide rail 222 is horizontally disposed on the second lifting frame 230, and the roller 221 is rotatably connected to the seventh guide rail 222. By utilizing the cooperation of the roller 221 and the seventh guide rail 222, the first lifting frame 210, when moving, can push the second lifting frame 230 to move synchronously along the sixth guide rail 250, ensuring the synchronicity of the actions of the straight cutter 260 and the rounded corner cutter 270, thereby allowing the straight cutting and rounded corner cutting of paper to be carried out simultaneously. The compact structural design does not occupy too much space in the paper cutter, making the overall layout of the paper cutter more reasonable. More practical functions are integrated within a limited space, avoiding the problem of excessive equipment size and floor space caused by complex linkage devices.

[0024] During cutting, paper is prone to displacement and shaking due to the force of the cutter, its own weight, or slight external disturbances, which may result in uneven cut edges in straight cuts. Therefore, in one embodiment, a paper pressing assembly is also included. The paper pressing assembly includes a first driving device 300, a connecting plate 310, a second guide rail 320, a third guide rail 330, a first limiting groove 340, a second limiting groove 350, a limiting part 360, and a first pressing plate 370. The second guide rail 320 is horizontally disposed on the side frame 110, and the connecting plate 310 is slidably connected to the second guide rail 320. The first driving device 300 is disposed on the side frame 110 and is used to drive the connecting plate 310 to move along the second guide rail 320. A limiting groove 340 is horizontally disposed on the connecting plate 310, and a second limiting groove 350 is vertically disposed on the first pressure plate 370. A limiting part 360 is fixed on the side frame 110 and passes through the first limiting groove 340 and the second limiting groove 350 to restrict the first pressure plate 370 from moving in the vertical direction. A third guide rail 330 is inclinedly disposed on the connecting plate 310. The first pressure plate 370 is slidably connected to the third guide rail 330. The bottom surface of the first pressure plate 370 is used to press the upper surface of the paper passing through the opening 111. The paper pressing assembly can firmly press the upper surface of the paper through the opening 111, keeping it stable during the cutting process, preventing paper displacement and shaking, ensuring accurate cutting position, and improving the neatness of the cut edges. Since the paper is stably fixed, the number of times it needs to be readjusted due to changes in paper position is reduced, improving production efficiency. The first driving device 300 drives the connecting plate 310 to move horizontally along the second guide rail 320, and then the sliding cooperation between the third guide rail 330 and the first pressing plate 370 drives the first pressing plate 370 to move vertically, realizing the pressing and releasing action of the paper. The paper pressing state can be flexibly adjusted according to the paper placement and cutting requirements.

[0025] Excessive paper compression can damage the paper, while insufficient compression can cause the paper to shift during cutting, affecting the cutting quality. Therefore, in one embodiment, the first driving device 300 includes a first knob 301, a driving screw 302, and a screw nut 303. The driving screw 302 is horizontally mounted on the side frame 110 and can rotate relative to the side frame 110. The first knob 301 is located at one end of the driving screw 302 and is coaxially rotatable with the driving screw 302. The screw nut 303 is threadedly connected to the driving screw 302 and is fixedly connected to the connecting plate 310. Rotating the first knob 301 drives the lead screw 302 to rotate, which in turn converts the rotation of the lead screw into linear motion of the lead screw nut 303. The knob can be rotated according to the actual thickness and material of the paper to control the slight displacement of the connecting plate 310, thereby adjusting the pressure of the first pressure plate 370 on the paper in the paper pressing assembly. This ensures that the paper is stably fixed during cutting and improves the cutting quality. The first driving device 300, consisting of the knob, the lead screw 302, and the lead screw nut 303, has a relatively simple structure, low component cost, and is easy to maintain. This reduces the overall cost of the equipment and subsequent maintenance costs, improving cost-effectiveness while meeting functional requirements.

[0026] Aligning paper by visual inspection or simple marking is difficult to guarantee the accuracy of paper placement, resulting in paper cut to sizes that do not meet requirements. Therefore, in one embodiment, an alignment component is also included. The alignment component includes a fourth guide rail 400, a second knob 410, a gear, a rack, and a positioning ruler 420. The fourth guide rail 400 is mounted on the frame 100, and its extension direction is perpendicular to the length direction of the side frame 110. The positioning ruler 420 is slidably connected to the fourth guide rail 400. The rack is mounted on the frame 100 and is parallel to the fourth guide rail 400. The second knob 410 is located at one end of the positioning ruler 420 and can rotate relative to the positioning ruler 420. The second knob 410 is coaxially rotatable with the gear, and the gear meshes with the rack. By rotating the second knob 410, the positioning ruler 420 is driven to move along the fourth guide rail 400 through the meshing transmission of gears and racks, thereby providing an accurate alignment reference for the paper and ensuring that the paper is placed accurately in the cutting station. It can quickly and accurately position and align the paper, reducing the time spent on repeated manual adjustments to the paper position and improving production efficiency. It also helps to ensure that each cut sheet of paper meets relatively consistent standards in terms of size and shape, thereby improving the overall product qualification rate.

[0027] When faced with cutting tasks involving different paper materials and thicknesses, using blades with the same blade thickness may result in poor cutting quality. Therefore, in one embodiment, the first lifting frame 210 and the straight cutter 260 are detachably connected by screws, and the second lifting frame 230 and the rounded cutter 270 are detachably connected by screws. This detachable connection allows for the removal of the original blades and the installation of suitable blades, improving the paper cutter's adaptability to different cutting needs, broadening its application range, and better meeting the needs of various production scenarios. Furthermore, when the straight cutter 260 and the rounded cutter 270 experience wear, dulling, or damage after long-term use, the blades can be easily and quickly replaced, reducing production downtime caused by blade issues.

[0028] During the cutting process, the corners of the paper may shift due to the force of the rounded corner cutter 270, resulting in irregular shapes and inaccurate dimensions, affecting product quality and aesthetics. Therefore, in one embodiment, an elastic pressure plate assembly is also included. The elastic pressure plate assembly includes a bracket 500, an elastic element 510, and a second pressure plate 520. The bracket 500 is disposed on the side of the second lifting frame 230 near the right-angle plate 120. One end of the elastic element 510 is connected to the bracket 500, and the other end of the elastic element 510 is connected to the second pressure plate 520. The elastic element 510 has a tendency to push the second pressure plate 520 towards the frame 100. The second pressure plate 520 is used to elastically press the corners of the paper onto the frame 100 during rounded corner cutting. The elastic element 510 provides suitable elastic force, allowing the second pressure plate 520 to elastically press the paper corner onto the frame 100 during rounded corner cutting. This adapts to differences in paper thickness and texture, ensuring the paper corner is firmly fixed during cutting and effectively preventing displacement or wobbling due to the cutting force, thereby improving the accuracy of rounded corner cutting. The elastic pressure plate assembly applies pressure based on the elastic deformation of the elastic element 510, avoiding excessive rigid compression of the paper corner and preventing paper damage due to excessive pressure. This ensures cutting quality while reducing paper waste. Specifically, the elastic element 510 is a spring.

[0029] The lifting frame may experience impact and collision due to an unexpected rapid descent caused by external force, resulting in chipped or broken blades. Therefore, in one embodiment, an anti-fall assembly is also included. The anti-fall assembly includes a torsion spring 600 and an abutment member 610. The abutment member 610 is hinged to the side frame 110 and has an abutment end 611 for abutting against the lower surface of the first lifting frame 210. The torsion spring 600 is connected to the abutment member 610, and the other end of the torsion spring 600 is connected to the frame 100. The torsion spring 600 has a tendency to cause the abutment end 611 to turn towards the first lifting frame 210. The torsion spring 600 ensures that the contact end 611 of the contact member 610 always tends to turn towards the first lifting frame 210. When an abnormal situation occurs that causes the first lifting frame 210 to tend to fall, the contact member 610 can promptly abut against the first lifting frame 210 to prevent it from falling sharply and to prevent the parts from being damaged by strong impact or squeezing. This adds a layer of protection to the overall stable operation of the paper cutter, enabling the equipment to maintain a relatively safe and stable state when facing some emergencies, improving the equipment's reliable operation capability, and reducing production delays caused by equipment failure.

[0030] The scraps and waste generated during cutting may be scattered randomly around the paper cutter, on the floor, workbench, and other areas, leading to a cluttered work environment. Therefore, in one embodiment, a collection device is included. This device comprises a collection box 700 and a fifth guide rail. The fifth guide rail is mounted on the frame 100, and the collection box 700 is slidably connected to it, located below the corner-cutting station 140. The collection box 700, positioned below the corner-cutting station 140, catches the scraps and waste paper cut from the station, preventing them from scattering and keeping the work environment around the paper cutter clean and tidy, reducing clutter caused by waste accumulation. The waste collected in the collection box 700 can be centrally managed, facilitating subsequent recycling and environmental treatment as needed.

[0031] The paper cutter may shift during operation, affecting the quality and pass rate of the final paper product. Therefore, in one embodiment, the bottom of the frame 100 is provided with an anti-slip part. The anti-slip part increases the friction between the frame 100 and the placement surface, firmly fixing the paper cutter in its placement position during operation, preventing unnecessary displacement of the paper cutter, ensuring the accuracy of the paper cutting position, and helping to improve the cutting quality; it also avoids collision accidents that may be caused by accidental displacement of the paper cutter, ensuring the safety of operators and other surrounding equipment and items. Specifically, the anti-slip part is an anti-slip pad or a suction cup.

[0032] Preferably, the bottom surfaces of the first pressure plate 370 and the second pressure plate 520 are provided with anti-slip textures or anti-slip pads. The anti-slip textures or anti-slip pads increase the friction between the bottom surfaces of the first pressure plate 370 and the second pressure plate 520 and the paper surface, which can more firmly fix the paper when pressing it, effectively preventing the paper from sliding or shifting during the cutting process, ensuring that the paper remains stable at the cutting station, thereby improving cutting accuracy.

[0033] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A cutting machine having a function of cutting a rounded corner, characterized by comprising: The machine includes a frame, side frames, right-angle plates, a rotating rod, a first lifting frame, a linkage assembly, a second lifting frame, a first guide rail, a sixth guide rail, a straight cutter, and a rounded corner cutter. The frame has an edge-cutting station and a corner-cutting station. The side frames are mounted on the frame and have openings for paper to pass through, communicating with the edge-cutting station. The first guide rails are mounted on the side frames, and the first lifting frame is slidably connected to them. The middle of the rotating rod is hinged to the side frames, one end of the rotating rod is hinged to the first lifting frame, and the other end of the rotating rod has a handle. Rotation of the rotating rod drives the first lifting frame... The frame moves along the first guide rail, the straight cutter is mounted on the first lifting frame and located at the edge cutting station; the sixth guide rail is mounted vertically on the side frame, the second lifting frame is slidably connected to the sixth guide rail, the linkage component is mounted on the first lifting frame, and the linkage component can drive the second lifting frame to move synchronously along the sixth guide rail when the first lifting frame moves, the right-angle plate is mounted on the frame and located at the corner cutting station, the right-angle plate is used for corner positioning of paper, and the rounded corner cutter is mounted on the second lifting frame, the cutting edge trajectory of which is adapted to the inner edge contour of the right-angle plate.

2. The cutting machine with the function of cutting the rounded corners according to claim 1, characterized in that, The linkage component includes a roller and a seventh guide rail. The roller is disposed at one end of the first lifting frame and can rotate relative to the first lifting frame. The seventh guide rail is horizontally disposed on the second lifting frame, and the roller is rotatably connected to the seventh guide rail.

3. The cutting machine with the function of cutting round corners according to claim 1, characterized in that, It also includes a paper pressing assembly, which includes a first driving device, a connecting plate, a second guide rail, a third guide rail, a first limiting groove, a second limiting groove, a limiting part, and a first pressure plate. The second guide rail is horizontally disposed on the side frame, and the connecting plate is slidably connected to the second guide rail. The first driving device is disposed on the side frame and is used to drive the connecting plate to move along the second guide rail. The first limiting groove is horizontally disposed on the connecting plate, and the second limiting groove is vertically disposed on the first pressure plate. The limiting part is fixed on the side frame and passes through the first limiting groove and the second limiting groove to restrict the first pressure plate from moving in the vertical direction. The third guide rail is inclinedly disposed on the connecting plate, and the first pressure plate is slidably connected to the third guide rail. The bottom surface of the first pressure plate is used to press the upper surface of the paper passing through the opening.

4. The cutting machine with the function of cutting round corners according to claim 3, characterized in that, The first driving device includes a first knob, a driving screw, and a screw nut. The driving screw is horizontally mounted on the side frame and can rotate relative to the side frame. The first knob is mounted on one end of the driving screw and is coaxially rotatable with the driving screw. The screw nut is threadedly connected to the driving screw and is fixedly connected to the connecting plate.

5. The cutting machine with the function of cutting round corners according to claim 1, characterized in that, It also includes an alignment component, which comprises a fourth guide rail, a second knob, a gear, a rack, and a positioning ruler. The fourth guide rail is mounted on the frame and its extension direction is perpendicular to the length direction of the side frame. The positioning ruler is slidably connected to the fourth guide rail. The rack is mounted on the frame and is parallel to the fourth guide rail. The second knob is mounted on one end of the positioning ruler and is rotatable relative to the positioning ruler. The gear is mounted on the second knob and is coaxially rotatable with the second knob. The gear meshes with the rack.

6. The cutting machine with the function of cutting round corners according to claim 1, characterized in that, The first lifting frame and the straight cutter are detachably connected by screws, and the second lifting frame and the rounded corner cutter are detachably connected by screws.

7. The cutting machine with the function of cutting round corners according to claim 1, characterized in that, It also includes an elastic pressure plate assembly, which includes a bracket, an elastic element, and a second pressure plate. The bracket is disposed on the side of the second lifting frame near the right-angle plate. One end of the elastic element is connected to the bracket, and the other end of the elastic element is connected to the second pressure plate. The elastic element has a tendency to push the second pressure plate toward the frame. The second pressure plate is used to elastically press the corner of the paper onto the frame during rounded corner cutting.

8. The cutting machine with the function of cutting the rounded corners according to claim 1, characterized in that, It also includes an anti-fall component, which includes a torsion spring and an abutment member. The abutment member is hinged to the side frame and has an abutment end for abutting against the lower surface of the first lifting frame. The torsion spring is connected to the abutment member, and the other end of the torsion spring is connected to the frame. The torsion spring has a tendency to turn the abutment end towards the first lifting frame.

9. A paper cutter with rounded corner cutting function according to claim 1, characterized in that, It also includes a collection device, which includes a collection box and a fifth guide rail. The fifth guide rail is mounted on the frame, and the collection box is slidably connected to the fifth guide rail. The collection box is located below the corner cutting station.

10. The cutting machine with the function of cutting the rounded corners according to claim 1, characterized in that, The bottom of the frame is equipped with anti-slip parts.

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