Die-cutting machine capable of automatically adjusting cutting size

Abstract

The utility model discloses a die-cutting machine capable of automatically adjusting the cutting size, which relates to the technical field of die-cutting machines and comprises a workbench, a fixing frame is arranged on one side of the workbench, an adjusting mechanism is arranged on one side of the fixing frame, a limiting groove is formed in the top end of the fixing frame, and moving rods matched with the adjusting mechanism are arranged at the two ends in the limiting groove. A fixing mechanism is inserted into the top end of the moving rod, and a cutting mechanism is arranged at the bottom end of the moving rod. According to the automatic cutting device, the fixing frame, the adjusting mechanism, the limiting groove, the moving rod, the fixing mechanism and the cutting mechanism are arranged in a matched mode, the cutting position can be automatically adjusted according to the positions of products so as to meet the cutting requirements of different sizes, meanwhile, waste materials can be prevented from being adhered in the cutting process, the cutting effect is guaranteed, and the cutting efficiency of the products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-cutting machines, in particular to a die-cutting machine capable of automatically adjusting cutting size. Background Art

[0002] A die-cutting machine is a key piece of equipment in the post-processing of printed materials, specifically designed to cut printed paper or other materials according to preset contours. This equipment is widely used in the packaging field, such as making various types of boxes, bottle labels, book covers, etc. It not only achieves fine edge cutting to ensure the dimensional consistency and aesthetic appearance of the finished product, but also significantly reduces the need for manual intervention through automated operation, thereby reducing production costs and reducing waste generation. In order to further adapt to the diverse product specifications, die-cutting machines are often designed with the function of automatically adjusting the cutting size. It can quickly change the die-cutting parameters, making it more flexible and changeable to meet the processing requirements of different sizes. However, the die-cutting machines with automatic adjustment of the cutting size in the existing technology have a weak product fixing function, which makes the cut products prone to skew cutting, thereby reducing the quality of the finished label.

[0003] To address the above-mentioned problem, Chinese patent CN218557174U discloses a die-cutting machine for label production that can be adjusted to cut according to label size, including a feed plate, a hydraulic cylinder, a mounting plate, a cross-cutting knife, a longitudinal cutting knife, and a drive mechanism; the clamping mechanism is provided to effectively clamp and fix the material, thereby ensuring accurate and stable cutting when the device is cut. However, during the die-cutting process, the above-mentioned die-cutting machine uses a bidirectional screw to adjust the position of the cutting knife, which requires the label to be cut to be placed in the center of the cutting in advance, increasing the requirements for the label placement position, which may slow down the efficiency of the label placement operation, thereby reducing the cutting efficiency. At the same time, the inaccurate placement operation will affect the cutting accuracy.

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

[0005] In view of the problems in the related art, the present invention proposes a die-cutting machine that automatically adjusts the cutting size to overcome the above technical problems existing in the existing related art.

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

[0007] A die-cutting machine with automatic adjustment of cutting size includes a workbench, a fixed frame is provided on one side of the workbench, an adjustment mechanism is provided on one side of the fixed frame, a limiting groove is provided on the top of the fixed frame, and moving rods that cooperate with the adjustment mechanism are provided at both ends of the limiting groove. The fixing mechanism is inserted into the top of the moving rod, and the cutting mechanism is provided at the bottom of the moving rod.

[0008] Furthermore, in order to be able to adjust the cutting position of the cutting mechanism according to the position of the product, the movable rod can be moved along the path of the sliding groove under the action of pressing a group of pressing rods and under the cooperative compression of the spring. When the pressing rod is released, the movable rod is stuck into one end of the sliding groove, and the blocking block moves into the blocking groove. Then the motor is started, and the bevel gear one is driven by the rotation of the motor output shaft, so that the bevel gear two meshing with it rotates, driving the pressing rod and the threaded rod one to rotate together, and then driving a group of moving rods to move to the cutting position corresponding to the product. There is no need to place the product in a specific position in advance, which reduces the placement requirements of the product, improves the cutting efficiency of the product, and ensures the cutting accuracy. The adjustment mechanism includes a motor arranged on one side of the fixed frame, and a bevel gear is arranged on the top of the motor. Wheel one, bevel gear two are meshed on both sides of the top of bevel gear one, and a block is provided inside the end of bevel gear two away from the bevel gear one, and a threaded rod one is provided at one end of bevel gear two, and the threaded rod one is a hollow structure, and a pressing rod is provided inside the threaded rod one that cooperates with the block, and two groups of grooves are symmetrically provided on the outer side of the circumference of the pressing rod, and a protrusion that cooperates with the groove is provided on the inner wall of the threaded rod one; a groove that cooperates with the block is provided at one end of the pressing rod close to the bevel gear one, and two groups of pressing grooves are symmetrically provided on the outer side of the middle circumference of the pressing rod, and a sliding groove is provided on the inner wall of the pressing groove, and a pressing plate is provided at one end of the sliding groove, and a movable plate connected to the threaded rod one is provided on one side of the pressing plate and located inside the pressing groove, and the movable plate and the pressing plate are connected by a spring, and a movable rod connected to the movable plate is provided inside the sliding groove.

[0009] Furthermore, in order to ensure stability during cutting, the threaded rod 2 can be rotated under the rotation of the rotating handle, driving the fixed plate to move downward along the path of the limit column, so that the two ends of the product located above the workbench can be fixed to ensure the stability of the cutting process. The fixing mechanism includes a threaded rod 2 inserted into the top of the moving rod, a rotating handle is provided at the top of the threaded rod 2, a fixed plate is provided at the bottom end of the threaded rod 2, and a limit column connected to the moving rod is symmetrically inserted at the top of the fixed plate.

[0010] Furthermore, in order to prevent the cut waste from sticking to the cutting knife and affecting the next cutting effect, the cut waste can be separated by a number of isolation blocks, so that it is difficult for the cut waste to adhere to the cutting knife, thereby ensuring the cutting effect of the cutting knife. At the same time, under the action of a number of heat dissipation holes, the heat dissipation effect of the cutting knife can be increased, so that the service life of the cutting knife is extended. The cutting mechanism includes an electric telescopic rod arranged at the bottom end of the moving rod, and the bottom end of the electric telescopic rod is provided with a cutting knife. A number of isolation blocks are provided on the side of the cutting knife close to the fixing mechanism, and a number of heat dissipation holes are opened at one end of the cutting knife; the cross-section of the isolation block is a semicircular structure, and the number of isolation blocks are evenly arranged and linearly distributed on one side of the cutting knife; the plane where the two groups of grooves are located is parallel to the plane where the pressing groove is located.

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

[0012] 1. The utility model can automatically adjust the cutting position according to the position of the product to meet the cutting requirements of different sizes through the coordinated arrangement of the fixing frame, the adjusting mechanism, the limiting groove, the moving rod, the fixing mechanism and the cutting mechanism, and can also avoid the sticking of waste materials during the cutting process, thereby ensuring the cutting effect and improving the cutting efficiency of the product.

[0013] 2. Through the adjustment mechanism, the movable rod can be moved along the path of the sliding groove under the action of pressing a group of pressing rods and under the cooperative compression of the spring. When the pressing rod is released, the movable rod is stuck into one end of the sliding groove, and the card block moves into the card slot. Then the motor is started, and the bevel gear one can be driven by the rotation of the motor output shaft, so that the bevel gear two meshing with it rotates, driving the pressing rod and the threaded rod one to rotate together, and then driving a group of movable rods to move to the cutting position corresponding to the product. There is no need to place the product in a specific position in advance, which reduces the placement requirements of the product, improves the cutting efficiency of the product, and ensures the cutting accuracy.

[0014] 3. Through the cutting mechanism, the separation effect of several isolation blocks can make it difficult for the cut waste to adhere to the cutting knife, thereby ensuring the cutting effect of the cutting knife. At the same time, under the effect of several heat dissipation holes, the heat dissipation effect of the cutting knife can be increased, thereby extending the service life of the cutting knife. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1This is one of the structural schematic diagrams of a die-cutting machine that automatically adjusts the cutting size according to an embodiment of the present utility model;

[0017] Figure 2 This is a second structural diagram of a die-cutting machine that automatically adjusts cutting size according to an embodiment of the present utility model;

[0018] Figure 3 This is a partial structural diagram of a die-cutting machine that automatically adjusts cutting size according to an embodiment of the present utility model;

[0019] Figure 4 This is one of the partial cross-sectional views of an adjustment mechanism in a die-cutting machine for automatically adjusting cutting size according to an embodiment of the present utility model;

[0020] Figure 5 This is a second partial cross-sectional view of an adjustment mechanism in a die-cutting machine for automatically adjusting cutting size according to an embodiment of the present utility model;

[0021] Figure 6 This is a third partial cross-sectional view of an adjustment mechanism in a die-cutting machine for automatically adjusting cutting size according to an embodiment of the present utility model;

[0022] Figure 7 This is a fourth partial cross-sectional view of an adjustment mechanism in a die-cutting machine for automatically adjusting cutting size according to an embodiment of the present utility model;

[0023] Figure 8 It is a structural schematic diagram of a pressing rod in a die-cutting machine that automatically adjusts the cutting size according to an embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Workbench; 2. Fixed frame; 3. Adjusting mechanism; 301. Motor; 302. Bevel gear 1; 303. Bevel gear 2; 304. Clamping block; 305. Threaded rod 1; 306. Pressing rod; 307. Groove; 308. Bump; 309. Clamping slot; 310. Pressing slot; 311. Sliding slot; 312. Pressing plate; 313. Movable plate; 314. Spring; 315. Movable rod; 316. Limiting plate; 4. Limiting slot; 5. Moving rod; 6. Fixing mechanism; 601. Threaded rod 2; 602. Turning handle; 603. Fixing plate; 604. Limiting column; 7. Cutting mechanism; 701. Electric telescopic rod; 702. Cutting knife; 703. Isolation block; 704. Heat dissipation hole. DETAILED DESCRIPTION

[0026] 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. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the 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.

[0027] According to an embodiment of the present utility model, a die-cutting machine capable of automatically adjusting cutting size is provided.

[0028] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-8 As shown, the die-cutting machine with automatic adjustment of cutting size according to the embodiment of the utility model includes a workbench 1, a fixed frame 2 is provided on one side of the workbench 1, an adjustment mechanism 3 is provided on one side of the fixed frame 2, a limiting groove 4 is provided at the top of the fixed frame 2, and moving rods 5 that cooperate with the adjustment mechanism 3 are provided at both ends of the inner part of the limiting groove 4, a fixing mechanism 6 is inserted at the top of the moving rod 5, and a cutting mechanism 7 is provided at the bottom end of the moving rod 5.

[0029] With the help of the above-mentioned technical solution of the utility model, the utility model can not only automatically adjust the cutting position according to the position of the product to meet the cutting requirements of different sizes through the coordinated arrangement of the fixed frame 2, the adjustment mechanism 3, the limit groove 4, the movable rod 5, the fixing mechanism 6 and the cutting mechanism 7, but also avoid the sticking of waste materials during the cutting process, ensure the cutting effect, and improve the cutting efficiency of the product.

[0030] In one embodiment, for the above-mentioned adjustment mechanism 3, the adjustment mechanism 3 includes a motor 301 arranged on one side of the fixing frame 2, a bevel gear 1 302 is provided at the top of the motor 301, and bevel gear 2 303 is meshed with each other on both sides of the top of the bevel gear 1 302, a clamping block 304 is provided inside the end of the bevel gear 2 303 away from the bevel gear 1 302, and a threaded rod 1 305 is provided at one end of the bevel gear 2 303, the threaded rod 1 305 is a hollow structure, and a pressing rod 306 that cooperates with the clamping block 304 is provided inside the threaded rod 1 305, and the pressing rod 306 Two groups of grooves 307 are symmetrically opened on the outer side of the circumference of the screw rod 305, and a protrusion 308 is provided on the inner wall of the threaded rod 305 to match the groove 307; a groove 309 is opened on the end of the pressing rod 306 close to the bevel gear 302 to match the block 304, and two groups of pressing grooves 310 are symmetrically opened on the outer side of the middle circumference of the pressing rod 306, and a sliding groove 311 is opened on the inner wall of the pressing groove 310. A pressing plate 312 is provided at one end of the sliding groove 311, and a movable plate connected to the threaded rod 305 is provided on one side of the pressing plate 312 and located inside the pressing groove 310 313, the movable plate 313 and the pressing plate 312 are connected by a spring 314, and a movable rod 315 connected to the movable plate 313 is provided inside the sliding groove 311; a plurality of blocks 304 are evenly arranged and distributed in a circle inside one end of the bevel gear 2 303; a threaded hole is provided at the bottom of the movable rod 5 to match the threaded rod 1 305; under the action of pressing a group of pressing rods 306 and under the combined compression of the spring 314, the movable rod 315 can move along the path of the sliding groove 311, and when the pressing rod 306 is released, The movable rod 315 is stuck into one end of the sliding groove 311, and the block 304 moves into the slot 309. Then the motor 301 is started. Under the rotation of the output shaft of the motor 301, the bevel gear 1 302 is driven, so that the bevel gear 2 303 engaged with it rotates, driving the pressing rod 306 and the threaded rod 1 305 to rotate together, and then driving a group of movable rods 5 to move to the cutting position corresponding to the product. There is no need to place the product in a specific position in advance, which reduces the placement requirements of the product, improves the cutting efficiency of the product, and ensures the cutting accuracy.

[0031] In addition, it should be noted that the above-mentioned fixed frame 2 and bevel gear 2 303 and the fixed frame 2 and the two ends of the threaded rod 1 305 are connected by a limit plate 316, and the two sets of limit plates 316 located on the outside of the threaded rod 1 305 are provided with two sets of baffles to limit the movable rod 5, wherein the limit plates 316 and the bevel gear 2 303 or the threaded rod 1 305 are connected by bearings. This is the existing technology and will not be elaborated on here.

[0032] In addition, it should be noted that in order to enable the movable rod 315 to move along the path of the sliding slot 311 , the movable rod 315 is made of elastic material.

[0033] In addition, it should be noted that the above-mentioned adjustment mechanism 3 is generated by 3D printing technology.

[0034] The working principle of the adjustment mechanism 3 is as follows: when the printed product to be cut is placed on the workbench 1, by pressing a group of pressing rods 306, under the movement of a group of pressing rods 306 and the compression of the spring 314, the movable rod 315 can move along the path of the sliding groove 311. When the pressing rod 306 is released, the movable rod 315 moves to the inside of one end of the sliding groove 311 and is stuck in the sliding groove 311. At the same time, the blocking block 304 moves into the blocking groove 309. Then the motor 301 is started. Under the rotation of the output shaft of the motor 301, the bevel gear 1 302 is driven, so that the bevel gear 2 303 meshing with it rotates, driving the pressing rod 306 and the threaded rod 1 305 to rotate together, and then driving a group of moving rods 5 to move to the cutting position corresponding to one end of the product, and the motor is stopped. The machine 301 is pressed, and the pressing rod 306 is pressed again, so that under the compression action of the spring 314, the movable rod 315 continues to move along the path of the sliding groove 311. When the pressing rod 306 is released, the movable rod 315 moves to the inside of the other end of the sliding groove 311 under the elastic recovery action of the spring 314, so that the block 304 is no longer located in the slot 309. Then, by pressing another set of pressing rods 306, the same operation is performed to move the other set of movable rods 5 to the cutting position corresponding to the other end of the product. The motor 301 is stopped, and another set of pressing rods 306 is pressed, so that the other set of bevel gears 2 303, pressing rod 306 and threaded rod 1 305 are no longer rotated together, thereby reducing the placement requirements of the product, improving the cutting efficiency of the product, and ensuring the cutting accuracy.

[0035] In one embodiment, for the above-mentioned fixing mechanism 6, the fixing mechanism 6 includes a threaded rod 2 601 inserted into the top of the moving rod 5, a rotating handle 602 is provided at the top of the threaded rod 2 601, a fixing plate 603 is provided at the bottom end of the threaded rod 2 601, and a limiting column 604 connected to the moving rod 5 is symmetrically inserted at the top of the fixing plate 603; under the rotation action of the rotating handle 602, the threaded rod 2 601 can be rotated, driving the fixing plate 603 to move downward along the path of the limiting column 604, so that the two ends of the product located above the workbench 1 can be fixed to ensure the stability of the cutting process.

[0036] In addition, it should be noted that the second threaded rod 601 and the fixed plate 603 are connected via a bearing. This is a prior art and will not be elaborated on here.

[0037] The working principle of the fixing mechanism 6: by rotating the handle 602, the threaded rod 2 601 rotates, driving the fixing plate 603 to move downward along the path of the limiting column 604, thereby fixing the two ends of the product located above the workbench 1 to ensure the stability of the cutting process.

[0038] In one embodiment, for the above-mentioned cutting mechanism 7, the cutting mechanism 7 includes an electric telescopic rod 701 arranged at the bottom end of the moving rod 5, and a cutting knife 702 is arranged at the bottom end of the electric telescopic rod 701. A plurality of isolation blocks 703 are provided on the side of the cutting knife 702 close to the fixing mechanism 6, and a plurality of heat dissipation holes 704 are opened at one end of the cutting knife 702; the cross-section of the isolation block 703 is a semicircular structure, and the plurality of isolation blocks 703 are evenly arranged and linearly distributed on one side of the cutting knife 702; the plane where the two groups of grooves 307 are located is parallel to the plane where the pressing groove 310 is located; under the separating action of the plurality of isolation blocks 703, the cut waste is difficult to adhere to the cutting knife 702, thereby ensuring the cutting effect of the cutting knife 702, and at the same time, under the action of the plurality of heat dissipation holes 704, the heat dissipation effect of the cutting knife 702 can be increased, thereby extending the service life of the cutting knife 702.

[0039] The working principle of the cutting mechanism 7 is as follows: by activating the electric telescopic rod 701, the electric telescopic rod 701 extends, causing the cutting knife 702 to cut the printed product. At the same time, the isolation blocks 703 separate the cut waste, making it difficult for the cut waste to adhere to the cutting knife 702, thereby ensuring the cutting effect of the cutting knife 702. At the same time, the heat dissipation holes 704 increase the heat dissipation effect of the cutting knife 702, thereby extending the service life of the cutting knife 702.

[0040] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0041] In actual application, the operator places the printed product to be cut neatly on the workbench 1, and then starts the adjustment mechanism 3 to move the two sets of moving rods 5 along the path of the limit slot 4, so that the cutting mechanism 7 moves to the corresponding cutting position of the printed product, and then fixes the two ends of the printed product by rotating the fixing mechanism 6, and finally cuts the printed product by the cutting mechanism 7.

[0042] In summary, with the aid of the above technical solution of the present invention, through the coordinated arrangement of the fixing frame 2, the adjusting mechanism 3, the limiting groove 4, the moving rod 5, the fixing mechanism 6 and the cutting mechanism 7, not only can the cutting position be automatically adjusted according to the position of the product to meet the cutting requirements of different sizes, but also the sticking of waste materials during the cutting process can be avoided, the cutting effect is ensured, and the cutting efficiency of the product is improved; through the adjusting mechanism 3, under the action of pressing a group of pressing rods 306 and under the coordinated compression action of the spring 314, the movable rod 315 can be moved along the path of the sliding groove 311. When the pressing rod 306 is released, the movable rod 315 is stuck in one end of the sliding groove 311, and the block 304 moves into the card slot 309, and then the motor is started. 301, can drive bevel gear 1 302 under the rotation action of the output shaft of motor 301, so that bevel gear 2 303 engaged with it rotates, drives the pressing rod 306 and threaded rod 1 305 to rotate together, and then drives a group of moving rods 5 to move to the cutting position corresponding to the product, without having to place the product in a specific position in advance, reduces the placement requirements of the product, improves the cutting efficiency of the product, and ensures the cutting accuracy; through the cutting mechanism 7, it can make it difficult for the cut waste to adhere to the cutting knife 702 under the separation effect of several isolation blocks 703, thereby ensuring the cutting effect of the cutting knife 702, and at the same time, under the action of several heat dissipation holes 704, the heat dissipation effect of the cutting knife 702 can be increased, so that the service life of the cutting knife 702 is extended.

[0043] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like 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 present invention according to the specific circumstances.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A die-cutting machine with automatic adjustment of cutting size, comprising a workbench (1), characterized in that: A fixing frame (2) is provided on one side of the workbench (1), an adjusting mechanism (3) is provided on one side of the fixing frame (2), a limiting groove (4) is provided at the top end of the fixing frame (2), a moving rod (5) that cooperates with the adjusting mechanism (3) is provided at both ends of the inside of the limiting groove (4), a fixing mechanism (6) is inserted into the top end of the moving rod (5), and a cutting mechanism (7) is provided at the bottom end of the moving rod (5).

2. A die-cutting machine with automatic adjustment of cutting size according to claim 1, characterized in that: The adjusting mechanism (3) includes a motor (301) arranged on one side of the fixing frame (2), a bevel gear 1 (302) is provided at the top of the motor (301), bevel gear 2 (303) is meshed with each other on both sides of the top of the bevel gear 1 (302), a clamping block (304) is provided inside the end of the bevel gear 2 (303) away from the bevel gear 1 (302), a threaded rod 1 (305) is provided at one end of the bevel gear 2 (303), the threaded rod 1 (305) is a hollow structure, a pressing rod (306) is provided inside the threaded rod 1 (305) and is matched with the clamping block (304), two groups of grooves (307) are symmetrically provided on the outer side of the circumference of the pressing rod (306), and a protrusion (308) is provided on the inner wall of the threaded rod 1 (305) and is matched with the groove (307); The pressing rod (306) is provided with a slot (309) matching with the block (304) at one end thereof close to the bevel gear (302), and two groups of pressing slots (310) are symmetrically provided on the outer side of the middle circumference of the pressing rod (306), and a sliding slot (311) is provided on the inner wall of the pressing slot (310), and a pressing plate (312) is provided at one end of the sliding slot (311), and a movable plate (313) connected to the threaded rod (305) is provided on one side of the pressing plate (312) and located inside the pressing slot (310), and the movable plate (313) is connected to the pressing plate (312) by a spring (314), and a movable rod (315) connected to the movable plate (313) is provided inside the sliding slot (311).

3. The die-cutting machine with automatic adjustment of cutting size according to claim 1, characterized in that: The fixing mechanism (6) comprises a second threaded rod (601) inserted into the top end of the moving rod (5), a rotating handle (602) is provided at the top end of the second threaded rod (601), a fixing plate (603) is provided at the bottom end of the second threaded rod (601), and a limiting column (604) connected to the moving rod (5) is symmetrically inserted into the top end of the fixing plate (603).

4. The die-cutting machine with automatic adjustment of cutting size according to claim 1, characterized in that: The cutting mechanism (7) comprises an electric telescopic rod (701) arranged at the bottom end of the moving rod (5); a cutting knife (702) is arranged at the bottom end of the electric telescopic rod (701); a plurality of isolation blocks (703) are arranged on a side of the cutting knife (702) close to the fixing mechanism (6); and a plurality of heat dissipation holes (704) are opened at one end of the cutting knife (702).

5. The die-cutting machine with automatic adjustment of cutting size according to claim 2, characterized in that: The plurality of clamping blocks (304) are evenly arranged and circumferentially distributed inside one end of the second bevel gear (303).

6. The die-cutting machine with automatic adjustment of cutting size according to claim 2, characterized in that: The bottom of the movable rod (5) is provided with a threaded hole that matches the threaded rod 1 (305).

7. The die-cutting machine with automatic adjustment of cutting size according to claim 4, characterized in that: The cross section of the isolation block (703) is a semicircular structure, and a plurality of the isolation blocks (703) are evenly arranged and linearly distributed on one side of the cutting knife (702).

8. The die-cutting machine with automatic adjustment of cutting size according to claim 2, characterized in that: The plane where the two groups of grooves (307) are located is parallel to the plane where the pressing groove (310) is located.

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