Telescopic movable circular cutting die

Abstract

The utility model provides a telescopic movable type circular cutting die. The telescopic movable type circular cutting die comprises two symmetrically-arranged installation frames and a hollow cutter roller arranged between the two installation frames, a connecting mechanism is arranged between the cutter roller and the installation frames, a plurality of sets of protection grooves are formed in the surface of the cutter roller, and die cutting ring cutters are arranged in the protection grooves. Through the arrangement of a movable rod and a convex ring, when the knife roll drives the die-cutting ring knife to rotate to be close to the cutting position, the die-cutting ring knife can extend out of the protection groove for die cutting, and when the knife roll is away from the cutting position, the die-cutting ring knife can extend into the protection groove for protection, and therefore the effect that the non-cutting die-cutting knife is shrunk and protected is achieved; the risk that an operator accidentally touches the cutter head is reduced, the service life of the die-cutting cutter is effectively prolonged, and the effect and safety of the die-cutting cutter are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of die-cutting circular knives, in particular to a retractable movable circular knife die. Background Art

[0002] A die is a mold for punching products: when printing a box, it is a flat piece of paper. After printing is completed, to make a box, a flat mold identical to the box is required for stamping and forming. This mold is the printing die, and it is usually also simply referred to as a die or a punching die.

[0003] The known authorized patent with the application number: CN202322006767.2 discloses a thimble waste discharging circular knife. Its background art mentions the problems that "during the cutting process, ordinary spring knives can no longer meet the requirements. As the product gap becomes smaller and the graphics become more irregular, ordinary spring thimbles will cause smaller cutting waste to easily get stuck in the knife cavity. The pressure generated by using foam is insufficient, and waste discharging is not thorough, resulting in product defects, etc. At the same time, it indirectly affects the service life of the knife roller and reduces work efficiency". For this reason, the technical solution to solve this problem in this scheme is "including a knife roller, which has a cavity with a hollow structure inside. A plurality of through holes are arranged in a circle on the outer side wall of the knife roller. A cutting edge is arranged at the edge of the through hole, and a material pushing component is arranged on the through hole, and the material pushing component is arranged opposite to the cutting edge" and so on.

[0004] However, in the implementation of the related technology, it is found that the above technical solution has the following problems: although it achieves the effect of quickly discharging waste and preventing waste from jamming the knife through the provided technical solution, when in use, it is not convenient to perform telescopic protection on the die-cutting tool head at the non-die-cutting position. It discharges the die-cutting waste through the telescopic movement of the waste discharging thimble, while the die-cutting knife always protrudes from the surface of the knife roller, which easily accelerates the wear of the tool head or damages the raw material, thereby reducing the service life of the die-cutting knife and the die-cutting effect. Summary of the Utility Model

[0005] To solve the above problems, the utility model proposes a retractable movable circular knife die to solve the problem that it is not convenient to perform telescopic protection on the die-cutting tool head at the non-die-cutting position in the above-mentioned prior art.

[0006] To achieve the above object, a retractable and movable circular knife die provided by the utility model comprises: two symmetrically arranged mounting frames, a knife roller which is arranged between the two mounting frames and has a hollow interior, a connecting mechanism arranged between the knife roller and the mounting frames, a plurality of groups of protective grooves formed on the surface of the knife roller, a die-cutting ring knife arranged in the protective grooves, a fixing rod arranged in the knife roller, a plurality of groups of elastic telescopic members fixedly mounted on the surface of the fixing rod, a U-shaped rod fixedly connected to the end of the elastic telescopic member and slidably penetrating through the protective groove, the U-shaped rod being connected to the die-cutting ring knife, a movable rod fixedly mounted on the plurality of groups of elastic telescopic members and extending out of the end of the knife roller, and a convex ring fixedly mounted on the opposite surfaces of the two mounting frames, the movable rod being in contact with the outer surface of the convex ring and driving the die-cutting ring knife to perform a telescopic movement in the protective groove during the rotation of the knife roller.

[0007] Further, the elastic telescopic member comprises a plurality of groups of sleeves fixedly mounted on the surface of the fixing rod, a spring connected to the inner bottom wall of the sleeve, a telescopic rod connected to the top end of the spring, and a cylinder cover threadedly connected to the end of the sleeve and slidably connected to the telescopic rod, the U-shaped rod being fixedly connected to the end of the telescopic rod, the movable rod being fixedly connected to the surface of each telescopic rod along the length direction of the fixing rod, and the movable rod being in contact with and abutted against the outer surface of the convex ring by the elastic force of the spring.

[0008] Further, the connecting mechanism comprises a rotating shaft rotatably penetrating through the two mounting frames and a flange seat fixedly connected to the opposite ends of the two rotating shafts, the flange seat being connected to the knife roller by bolts, the fixing rod being fixedly mounted on one end face of a flange seat, and a through groove for the movable rod to penetrate through being formed through the end face of the flange seat.

[0009] Further, a cleaning roller is rotatably connected between the opposite surfaces of the two mounting frames, the cleaning roller is located above the knife roller, and both ends of the cleaning roller movably penetrate through the mounting frames, a first gear is fixedly connected to one end of the cleaning roller, and a second gear meshing with the first gear is fixedly connected to one end of a rotating shaft.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] First, the utility model has a long service life. Through the arrangement of the movable rod and the convex ring, when the knife roller drives the die-cutting ring knife to rotate and approach the cutting position, the telescopic rod can be driven to move and stretch the spring by the movable rod, so that the telescopic rod drives the die-cutting ring knife to extend out of the protective groove for die-cutting, and when it is far from the cutting position, the die-cutting ring knife extends into the protective groove for protection. Therefore, by using the reciprocating telescopic movement of the die-cutting ring knife, the effect of shrinking and protecting the non-cutting die-cutting knife is realized, the situation of accelerating the wear or damage of the tool head or damaging the raw material is avoided, and at the same time, the risk of accidental contact between the operator and the tool head is reduced, effectively improving the service life, effect and safety of the die-cutting knife.

[0012] Second, the utility model is flexible in use. Through the arrangement of the first gear and the second gear, the cleaning roller can be driven to rotate in the reverse direction while the cutter roller rotates, and the surface of the cutter roller can be cleaned by the cleaning roller to prevent raw material residues from affecting the die-cutting effect, which is beneficial to improving the die-cutting accuracy and quality.

[0013] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the cross-sectional structural schematic diagram of the cutter roller of the present utility model;

[0016] Figure 3 is the cross-sectional structural schematic diagram of the sleeve of the present utility model;

[0017] Figure 4 is the partial structural schematic diagram of the mounting bracket of the present utility model.

[0018] In the figure: 1, mounting bracket; 2, cutter roller; 3, die-cutting circular knife; 4, fixed rod; 5, U-shaped rod; 6, movable rod; 7, convex ring; 8, sleeve; 9, spring; 10, telescopic rod; 11, cylinder cover; 12, rotating shaft; 13, flange seat; 14, through groove; 15, cleaning roller; 16, first gear; 17, second gear. Specific Embodiments

[0019] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific embodiments of the present utility model will now be described with reference to the accompanying drawings. However, the protection scope of the present utility model is not limited to the following description.

[0020] Embodiment 1

[0021] Refer to Figures 1-4As shown in the figure, a retractable movable circular knife die includes: two symmetrically arranged mounting brackets 1, a knife roller 2 with a hollow interior disposed between the two mounting brackets 1, a connecting mechanism provided between the knife roller 2 and the mounting brackets 1, a plurality of groups of protective grooves formed on the surface of the knife roller 2, a die-cutting circular knife 3 disposed in the protective grooves, a fixing rod 4 disposed inside the knife roller 2, a plurality of groups of elastic telescopic members fixedly installed on the surface of the fixing rod 4, a U-shaped rod 5 fixedly connected to the end of the elastic telescopic member and slidably penetrating through the protective groove, the U-shaped rod 5 being connected to the die-cutting circular knife 3, a movable rod 6 fixedly installed on the plurality of groups of elastic telescopic members and extending out of the end of the knife roller 2, and a convex ring 7 fixedly installed on the opposite surfaces of the two mounting brackets 1. Among them, the bottom of the convex ring 7 has an arc-shaped convex portion, the movable rod 6 is in contact with the outer surface of the convex ring 7, and drives the die-cutting circular knife 3 to perform a telescopic movement in the protective groove during the rotation of the knife roller 2. Among them, when the knife roller 2 drives the movable rod 6 to contact the convex portion of the convex ring 7, the elastic telescopic member can be stretched, so that the die-cutting circular knife 3 extends out of the protective groove and contacts and cooperates with the external counter-roller to complete die-cutting. On the contrary, the die-cutting circular knife 3 is driven by the elastic telescopic member to extend into the protective groove for protection.

[0022] The elastic telescopic member includes a plurality of groups of sleeves 8 fixedly installed on the surface of the fixing rod 4, a spring 9 connected in the sleeve 8, a telescopic rod 10 connected to the top of the spring 9, and a cylinder cover 11 threadedly connected to the end of the sleeve 8 and slidably connected to the telescopic rod 10. The U-shaped rod 5 is fixedly connected to the end of the telescopic rod 10. The movable rod 6 is fixedly connected to the surface of each telescopic rod 10 along the length direction of the fixing rod 4. The movable rod 6 is in contact with and abuts against the outer surface of the convex ring 7 by the elastic force of the spring 9. Among them, the spring 9 and the sleeve 8 and the telescopic rod 10 respectively adopt a detachable connection method, such as bonding, end matching nut connection, etc., to achieve the detachable effect. It is convenient for later replacement, and this is not the only limitation here.

[0023] A technical solution provided by this embodiment, when in use, the cutter roller 2 is installed on the mounting frame 1 through a connecting mechanism, and the cutter roller 2 is driven to rotate by an external driving device. At the same time, the movable rod 6 is driven by the cutter roller 2 to rotate along the outer surface of the convex ring 7. When the cutter roller 2 drives the die-cutting ring cutter 3 to rotate and approach the external counter-cutting roller, at this time, the corresponding movable rod 6 contacts the arc-shaped convex part of the convex ring 7, and the movable rod 6 is driven to move downward by the guiding of the convex part, so that the movable rod 6 drives the telescopic rod 10 to move and stretch the spring 9. Thus, the die-cutting ring cutter 3 is driven by the telescopic rod 10 in cooperation with the U-shaped rod 5 to extend out of the protective groove and contact with the counter-cutting roller for die-cutting. When the movable rod 6 rotates away from the convex part of the convex ring 7, the telescopic rod 10 is driven by the spring 9 to reset and contract, so that the die-cutting ring cutter 3 extends into the protective groove for protection, and the outer wall of the cutter roller 2 can eject the cut waste for waste discharge. Therefore, as the cutter roller 2 rotates, the die-cutting ring cutter 3 makes a reciprocating telescopic motion, thereby realizing the effect of telescopic protection for the die-cutting knife at the non-cutting position, avoiding the situation that the cutter head protruding from the cutter roller 2 is easy to friction with the external structure and accelerate wear or damage the raw material, reducing the unnecessary contact and wear between the cutter head and the raw material, facilitating the protection of the raw material from damage, and the die-cutting ring cutter 3 only extends out at a specific cutting position, ensuring the accuracy of cutting, being able to reduce the risk of accidental touching of the cutter head by the operator, and effectively improving the service life, use effect and safety of the die-cutting knife.

[0024] Preferably: The connecting mechanism includes a rotating shaft 12 that is rotatably connected through the two mounting frames 1 and a flange seat 13 fixedly connected to the opposite ends of the two rotating shafts 12. The flange seat 13 is connected to the cutter roller 2 through bolts. The fixed rod 4 is fixedly installed on one end face of a flange seat 13, and a through groove 14 for the movable rod 6 to pass through is formed through the end face of the flange seat 13.

[0025] Specifically, by setting the flange seat 13, it is convenient to disassemble and install the cutter roller 2 and facilitate the maintenance of the cutter roller 2. When the die-cutting ring cutter 3 expands and contracts, the movable rod 6 can move in the through groove 14 to limit its position.

[0026] Embodiment Two

[0027] Based on Embodiment One, in this embodiment: A cleaning roller 15 is rotatably connected between the opposite faces of the two mounting frames 1. The cleaning roller 15 is located above the cutter roller 2, and both ends of it pass through the mounting frame 1 movably. One end of the cleaning roller 15 is fixedly connected to a gear one 16, and one end of a rotating shaft 12 is fixedly connected to a gear two 17 that meshes with the gear one 16. Among them, the soft bristles on the cleaning roller 15 are in contact with the surface of the cutter roller 2.

[0028] In a technical solution provided by this embodiment, during cutting, an external driving device drives the rotation of the rotating shaft 12, causing the cutter roller 2 to rotate for cutting, and driving the second gear 17 to rotate. At the same time, the second gear 17 drives the first gear 16 meshing with it to rotate, so that the cleaning roller 15 and the cutter roller 2 rotate in opposite directions, and the soft bristles of the cleaning roller 15 can clean the surface of the cutter roller 2, preventing raw material residues from affecting the die-cutting effect, and being beneficial to improving the die-cutting accuracy and quality.

[0029] The above-disclosed are only the preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A retractable and movable circular knife die, characterized in that, Including: Two symmetrically arranged mounting brackets (1); A knife roller (2) disposed between the two mounting brackets (1) and hollow inside. A connecting mechanism is provided between the knife roller (2) and the mounting brackets (1), and multiple groups of protective grooves are formed on the surface of the knife roller (2); A die-cutting ring knife (3) disposed in the protective grooves; A fixing rod (4) disposed inside the knife roller (2); Multiple groups of elastic telescopic members fixedly installed on the surface of the fixing rod (4); A U-shaped rod (5) fixedly connected to the end of the elastic telescopic member and sliding through the protective groove. The U-shaped rod (5) is connected to the die-cutting ring knife (3); A movable rod (6) fixedly installed on multiple groups of elastic telescopic members and extending out of the end of the knife roller (2); And a convex ring (7) fixedly installed on the opposite surfaces of the two mounting brackets (1). The movable rod (6) contacts the outer surface of the convex ring (7) and drives the die-cutting ring knife (3) to perform a telescopic movement in the protective groove during the rotation of the knife roller (2).

2. The retractable movable round die according to claim 1, characterized in that: The elastic telescopic member includes multiple groups of sleeves (8) fixedly installed on the surface of the fixing rod (4), springs (9) connected to the inner bottom walls of the sleeves (8), telescopic rods (10) connected to the tops of the springs (9), and cylinder caps (11) threadedly connected to the ends of the sleeves (8) and slidably connected to the telescopic rods (10).

3. A retractable movable circular knife die according to claim 2, characterized in that: The U-shaped rod (5) is fixedly connected to the end of the telescopic rod (10). The movable rod (6) is fixedly connected to the surface of each telescopic rod (10) along the length direction of the fixing rod (4). The movable rod (6) contacts and abuts against the outer surface of the convex ring (7) through the elastic force of the spring (9).

4. A retractable movable circular knife die according to claim 1, characterized in that: The connecting mechanism includes a rotating shaft (12) rotatably connected through the two mounting brackets (1) and a flange seat (13) fixedly connected to the opposite ends of the two rotating shafts (12).

5. A retractable movable round knife die according to claim 4, characterized in that: The flange seat (13) is connected to the knife roller (2) by bolts. The fixing rod (4) is fixedly installed on one end face of a flange seat (13). A through groove (14) for the movable rod (6) to pass through is formed through the end face of the flange seat (13).

6. The retractable movable round die cutter according to claim 4, characterized in that: A cleaning roller (15) is rotatably connected between the opposite surfaces of the two mounting brackets (1). The cleaning roller (15) is located above the knife roller (2), and both ends thereof movably penetrate the mounting brackets (1).

7. A retractable and movable round knife die according to claim 6, characterized in that: A first gear (16) is fixedly connected to one end of the cleaning roller (15). A second gear (17) meshing with the first gear (16) is fixedly connected to one end of a rotating shaft (12).

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