A protection mechanism for a die cutter

Abstract

The utility model provides a kind of protection mechanism of die-cutting machine cutter, including workbench, chute is opened in workbench, two sliding plates are symmetrically arranged on workbench in sliding, two spring grooves are symmetrically opened in workbench, two connecting grooves are opened in workbench, two connecting rods are slidably arranged in two connecting grooves respectively in workbench, two first limit blocks are slidably arranged in two spring grooves respectively in workbench, two second limit blocks are slidably arranged in workbench, first spring is arranged between two first limit blocks and two second limit blocks, two threaded holes are respectively opened in the left and right end surfaces of workbench, two lead screws are threadedly connected with two threaded holes in spring groove, two sliding holes are respectively arranged in the left and right ends of workbench, two sliding rods are slidably arranged in the left and right ends of workbench, and measuring mechanism is arranged in the side end of workbench and above each sliding rod.

Description

Technical Field

[0001] This utility model relates to the field of protective mechanism technology, specifically to a protective mechanism for a die-cutting machine cutter. Background Technology

[0002] In the production and processing of packaging boxes, die-cutting is required to obtain the desired box shape for subsequent packaging. A die-cutting machine is a type of machinery used in paper packaging and printing processes. It uses a template carved from steel knives or wires, and applies pressure through a printing plate to cut the printed material (or paper) into the required shape.

[0003] Chinese Patent No. CN202420398729.8 discloses a die-cutting device for packaging box production, comprising: a worktable; a bridge frame fixedly connected to the upper end of the worktable; a hydraulic cylinder provided at the upper end of the bridge frame; a lifting plate fixedly connected to the output end of the hydraulic cylinder; and a mounting plate fixedly connected to the bottom of the lifting plate, wherein two sets of mounting plates are provided, and a cutter is provided between the two sets of mounting plates. This utility model provides a die-cutting device for packaging box production. The hydraulic cylinder drives the lifting plate downwards, at which time the cutter moves downwards synchronously, die-cutting the packaging box. The elastic force of a first spring keeps the two sets of sliding plates tightly pressed together, thus holding the packaging box in place. During cutting, the cutter moves to the gap between the two sets of sliding plates, squeezing the two sets of sliding plates as it moves downwards. Throughout the die-cutting process, the cutter blade does not contact any object other than the packaging box, thereby reducing blade wear.

[0004] Although the aforementioned patent can improve the service life of the die-cutting machine's cutter by using two sliding plates to protect the cutter and adjust the squeezing force of the first spring on the first limiting block, the worktable has lead screws at both ends, with each lead screw positioned on the side of the second limiting block. When adjusting the second limiting block by rotating one lead screw, the number of rotations must be manually recorded, and each lead screw must rotate the same number of times. Otherwise, the second limiting block may tilt in the spring groove, resulting in uneven distribution of the pushing force of the first spring on the first limiting block, making operation inconvenient. Utility Model Content

[0005] The purpose of this utility model is to provide a protective mechanism for the cutting blade of a die-cutting machine, addressing the defects and shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a protective mechanism for a die-cutting machine cutter, comprising a worktable, a sliding groove on the worktable, two sliding plates symmetrically arranged within the sliding groove on the worktable, two spring grooves symmetrically arranged on the worktable, two connecting sliding grooves on the worktable, the two connecting sliding grooves respectively communicating with the two spring grooves, two connecting rods slidably arranged within the two connecting sliding grooves on the worktable, two first limiting blocks slidably arranged within the two spring grooves on the worktable, the two ends of the two connecting rods being fixedly connected to the first limiting blocks and the sliding plates respectively, and two second limiting blocks slidably arranged within the two spring grooves on the worktable, the two first limiting blocks and the connecting rods being fixedly connected to the first limiting blocks and the sliding plates respectively. A first spring is provided between the two second limiting blocks and in the two spring grooves respectively. The worktable also includes two threaded openings located on the left and right end faces of the worktable and communicating with the two spring grooves respectively. The two threaded openings are located in the middle of the spring grooves. Two lead screws are threaded to the left and right ends of the worktable, and the two lead screws are threaded to the two threaded openings respectively. Two sliding openings are provided at the left and right ends of the worktable, symmetrical to the front and rear sides of the threaded openings. Two sliding rods are slidably provided at the left and right ends of the worktable, and the sliding rods are slidably disposed in the sliding openings. One end of each sliding rod is fixedly connected to a second limiting block. A measuring mechanism is provided on the side end of the worktable above each sliding rod.

[0007] A further improvement is that the measuring mechanism includes a fixed base fixedly disposed on the side end of the worktable and located above the sliding rod, a placement opening opened on the lower end face of the fixed base, an abutment block that can be raised and lowered and disposed on the fixed base and located in the placement opening, and a plurality of abutment grooves opened on the upper end face of the sliding rod and equidistantly arranged, wherein the lower end face of the abutment block is an arc surface, and each of the abutment grooves is an arc groove.

[0008] Further effects: When the screw is turned in the forward direction, the second limiting block moves closer to the first limiting block. At this time, the first spring is gradually compressed, generating elastic potential energy, which increases the driving force of the first spring on the first limiting block and increases the moving resistance between the two sliding plates. When the screw is turned in the reverse direction, the first spring gradually releases elastic potential energy, gradually pushing the second limiting block away from the first limiting block. When the second limiting block moves closer to or away from the first limiting block, it will cause the sliding rod to extend into or out of the side end face of the worktable.

[0009] Further effects: Since the positions of the fixed seat and the abutment block remain unchanged, as the sliding rod moves with the second limit block, the lower end face of the abutment block remains in contact with the upper end face of the sliding rod. When the position of the placement opening corresponds to the position of one of the abutment grooves, the abutment block descends in the placement opening under its own weight and engages in the abutment groove. The operator can control the rotation of the two lead screws by observing the engagement of the abutment block and the corresponding abutment groove, so that each abutment block is engaged in the corresponding abutment groove.

[0010] A further improvement is that the abutment block is a counterweight block with weight.

[0011] A further improvement is that a second spring is provided between the abutment block and the fixing seat, and the second spring is located inside the placement opening.

[0012] A further improvement is that the other end of the lead screw is equipped with a rotating disc that is easy to drive by hand.

[0013] Further benefits: When it is necessary to control the lead screw to rotate in the forward or reverse direction, simply hold the rotating disc with your hand and turn it in the forward or reverse direction to drive the lead screw to rotate in the forward or reverse direction, without the need for tools, which can improve the convenience of controlling the lead screw.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When it is necessary to adjust the movement of the second limiting block in the spring groove, the screw is turned to rotate and push the middle position of the second limiting block to move in the spring groove. During the movement of the second limiting block, the sliding rods on the front and rear sides will slide in the sliding opening. The extension length of the sliding rod on the side of the worktable can be measured by the measuring mechanism. The operator only needs to know the movement position of the second limiting block through the measuring mechanism. By controlling the screws on the left and right sides, the sliding rods on the left and right sides can be extended to the same position. There is no need for the operator to remember the number of rotations of the screw. During the movement of the second limiting block, since there are sliding rods at both the front and rear, the movement of the second limiting block can be guided by the cooperation of the sliding rods and the sliding opening, preventing the second limiting block from tilting during movement. This makes the pushing force of the first spring on the first limiting block evenly distributed, and the operation is more convenient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of the present invention; Figure 2 This is a top sectional view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a side sectional view of the sliding rod and the fixed seat in this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Slide groove; 3. Sliding plate; 4. Spring groove; 5. Connecting slide groove; 6. Connecting rod; 7. First limiting block; 8. Second limiting block; 9. First spring; 10. Threaded opening; 11. Lead screw; 12. Sliding opening; 13. Fixed seat; 14. Placement opening; 15. Abutment block; 16. Abutment groove; 17. Second spring; 18. Rotating disk; 19. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] See Figures 1 to 4 As shown, the technical solution adopted in this specific embodiment is: a protective mechanism for a die-cutting machine cutter, including a worktable 1, a sliding groove 2 on the worktable 1, two sliding plates 3 symmetrically arranged within the sliding groove on the worktable 1, two spring grooves 4 symmetrically arranged on the worktable 1, two connecting sliding grooves 52 on the worktable 1, the two connecting sliding grooves 52 respectively communicating with the two spring grooves 4, two connecting rods 6 slidably arranged within the two connecting sliding grooves 52 on the worktable 1, two first limiting blocks 7 slidably arranged within the two spring grooves 4 on the worktable 1, the two ends of the two connecting rods 6 being fixedly connected to the first limiting blocks 7 and the sliding plates 3 respectively, and two second limiting blocks 8 slidably arranged within the two spring grooves 4 on the worktable 1, the two first limiting blocks 7 and the two second limiting blocks 8 being connected to each other. The worktable 1 includes two springs 9 located in the two spring grooves 4, and two threaded holes 10 located on the left and right ends of the worktable 1 and connected to the two spring grooves 4. The two threaded holes 10 are located in the middle of the spring grooves 4. Two lead screws 11 are threaded to the left and right ends of the worktable 1, and the two lead screws 11 are threaded to the two threaded holes 10. Two sliding holes 12 are provided on the left and right ends of the worktable 1, and the two sliding holes 12 are symmetrical to the front and rear sides of the threaded holes 10. Two sliding rods 13 are slidably provided on the left and right ends of the worktable 1, and the sliding rods 13 are slidably provided in the sliding holes 12. One end of each sliding rod 13 is fixedly connected to the second limiting block 8. A measuring mechanism is provided on the side of the worktable 1 and above each sliding rod 13.

[0020] The upper end of the workbench 1 is also equipped with a bridge, hydraulic cylinder, lifting plate, mounting plate, cutter, and other mechanisms to form the structure of the die-cutting device. This specific structure is fully disclosed in patent number CN202420398729.8. This application further improves the disclosed adjustment and protection structure to facilitate the adjustment of the die-cutting device. There are two threaded openings 10 and two lead screws 11, both located at the middle of the spring groove 4 on the workbench 1. One end of the lead screw 11 abuts against the second limiting block 8. There are four sliding openings 12, with every two sliding openings 12 located on the left and right end faces of the workbench 1. The number of sliding rods 13 corresponds to the number of sliding openings 12. A measuring mechanism is provided above each sliding rod 13. The first spring 9 is equidistantly positioned between the first limiting block 7 and the second limiting block 8. One end of the first spring 9 is fixed to the first limiting block 7, and the other end is abutted against the second limiting block 8 to ensure no displacement occurs during compression. The worktable 1 is manufactured in two separate parts. The worktable 1, sliding plate, spring groove 4, connecting groove 52, and sliding opening 12 are all integrally formed with the worktable 1. During assembly, the sliding plate 3, connecting rod, first limiting block 7, second limiting block 8, first spring 9, and sliding rod 13 are installed on one half of the worktable 1, and then the other half is spliced ​​onto the first half. The joint between the two halves is welded, or the two halves of the worktable 1 are connected and fixed with bolts and nuts to ensure structural rigidity and sealing. The threaded opening 10 is machined on the left and right end faces of the worktable 1 by a CNC drilling and milling machine after assembly. The hole diameter matches the outer diameter of the lead screw 11. As the cutter moves downwards, it presses against the two sets of sliding plates 3. Throughout the die-cutting process, the cutter's blade does not come into contact with any object other than the packaging box, thus reducing blade wear and extending the cutter's lifespan, providing protection for the cutter. The sliding opening 12 and the sliding rod 13 are square holes and square rods.

[0021] The measuring mechanism includes a fixed base 14 fixedly mounted on the side of the worktable 1 and located above the sliding rod 13; a placement opening 15 on the lower end face of the fixed base 14; an abutment block 16 vertically mounted on the fixed base 14 and located within the placement opening 15; and several abutment grooves 17 equidistantly arranged on the upper end face of the sliding rod 13. The lower end face of the abutment block 16 is an arc surface, and each abutment groove 17 is an arc groove. The arc surface and the arc groove engage with each other. The abutment grooves 17 are formed along the length of the sliding rod 13. The number of fixed bases 14 corresponds to the number of sliding rods 13, and each fixed base 14 is located above each sliding rod 13. The number of abutment blocks 16 corresponds to the number of fixed bases 14.

[0022] The abutment block 16 is a counterweight with weight. The weight of the counterweight is between 50g and 1000g, and its specific weight is selected according to the spring force of the first spring 9. As long as the first spring 9 can move the second limit block 8 without being affected by the friction force of the abutment block 16 pressing on the sliding rod 13 when it is in elastic potential energy, it is sufficient.

[0023] A second spring 18 is provided between the abutment block 16 and the fixed base 14, and the second spring 18 is located inside the placement opening 15. The upper and lower ends of the second spring 18 abut against the upper end of the abutment block 16 and the lower end of the fixed base 14, respectively. When the second spring 18 is provided, the abutment block 16 can be selected not as a counterweight, and the abutment block 16 is driven only by the second spring 18. The spring force of the second spring 18 is still less than the pushing force of the first spring 9 on the second limiting block 8.

[0024] The other end of the lead screw 11 is provided with a rotating disk 19 for easy hand operation.

[0025] The working principle of this utility model is as follows: When it is necessary to adjust the movement of the second limiting block 8 in the spring groove 4, the screw 11 is turned to rotate and push the middle position of the second limiting block 8 to move in the spring groove 4. During the movement of the second limiting block 8, the sliding rods 13 on the front and rear sides will slide in the sliding opening 12. The extension length of the sliding rods 13 on the side of the worktable 1 can be measured by the measuring mechanism. The operator only needs to know the movement position of the second limiting block 8 through the measuring mechanism. By controlling the screws 11 on the left and right sides, the sliding rods 13 on the left and right sides can be extended to the same position. There is no need for the operator to remember the number of rotations of the screw 11. During the movement of the second limiting block 8, since there are sliding rods 13 at both the front and rear, the movement of the second limiting block 8 can be guided by the cooperation of the sliding rods 13 and the sliding opening 12, preventing the second limiting block 8 from tilting during movement. This makes the pushing force of the first spring 9 on the first limiting block 7 evenly distributed, and the operation is more convenient. When the screw 11 is turned in the forward direction, the second limiting block 8 moves closer to the end of the first limiting block 7. At this time, the first spring 9 is gradually compressed to generate elastic potential energy, thereby increasing the driving force of the first spring 9 on the first limiting block 7 and increasing the moving resistance between the two sliding plates 3. When the screw 11 is turned in the reverse direction, the first spring 9 gradually releases elastic potential energy and gradually pushes the second limiting block 8 away from the end of the first limiting block 7. When the second limiting block 8 moves closer to or away from the end of the first limiting block 7, it will drive the sliding rod 13 to extend into or out of the side end face of the worktable 1. Since the positions of the fixed seat 14 and the abutment block 16 remain unchanged, as the sliding rod 13 moves with the second limit block 8, the lower end face of the abutment block 16 remains in contact with the upper end face of the sliding rod 13. When the position of the placement opening 15 corresponds to the position of one of the abutment grooves 17, the abutment block 16 descends in the placement opening 15 under its own weight and engages in the abutment groove 17. The operator can control the rotation of the two lead screws 11 by observing the engagement of the abutment block 16 and the corresponding abutment groove 17, so that each abutment block 16 is engaged in the corresponding abutment groove 17. When it is necessary to control the lead screw 11 to rotate in the forward or reverse direction, simply hold the rotating disk 19 with your hand and turn it in the forward or reverse direction to drive the lead screw 11 to rotate in the forward or reverse direction. No tools are needed, which can improve the convenience of controlling the lead screw 11.

[0026] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection and are already known technology. Any component on the market that can achieve the functions described above can be used as a protective mechanism for the die-cutting machine's cutting blade. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A protective mechanism for a die-cutting machine cutter, comprising a worktable, a sliding groove formed on the worktable, two sliding plates symmetrically arranged within the sliding groove on the worktable, two spring grooves symmetrically formed on the worktable, two connecting sliding grooves formed on the worktable, the two connecting sliding grooves respectively communicating with the two spring grooves, two connecting rods slidably arranged within the two connecting sliding grooves on the worktable, two first limiting blocks slidably arranged within the two spring grooves on the worktable, the two ends of the two connecting rods being fixedly connected to the first limiting blocks and the sliding plates respectively, two second limiting blocks slidably arranged within the two spring grooves on the worktable, and a first spring arranged between the two first limiting blocks and the two second limiting blocks, respectively, within the two spring grooves, characterized in that: It also includes two threaded openings respectively on the left and right end faces of the worktable and connected to two spring grooves respectively. The two threaded openings are located in the middle of the spring grooves. Two lead screws are threaded to the left and right ends of the worktable respectively. The two lead screws are threaded to the two threaded openings respectively. Two sliding openings are provided on the left and right ends of the worktable respectively. The two sliding openings are symmetrical to the front and rear sides of the threaded openings. Two sliding rods are slidably provided on the left and right ends of the worktable respectively. The sliding rods are slidably provided in the sliding openings. One end of each sliding rod is fixedly connected to the second limiting block. A measuring mechanism is provided on the side of the worktable and above each sliding rod.

2. The protective mechanism for the die-cutting machine cutter according to claim 1, characterized in that: The measuring mechanism includes a fixed base fixedly disposed on the side end of the workbench and located above the sliding rod, a placement opening opened on the lower end face of the fixed base, an abutment block that can be raised and lowered on the fixed base and located in the placement opening, and a plurality of abutment grooves opened on the upper end face of the sliding rod and equidistantly arranged, wherein the lower end face of the abutment block is an arc surface, and each of the abutment grooves is an arc groove.

3. The protective mechanism for the die-cutting machine cutter according to claim 2, characterized in that: The abutment block is a counterweight with weight.

4. The protective mechanism for the die-cutting machine cutter according to claim 2, characterized in that: A second spring is provided between the abutment block and the fixing seat, and the second spring is located inside the placement opening.

5. The protective mechanism for the die-cutting machine cutter according to claim 1, characterized in that: The other end of the lead screw is equipped with a rotating disk that is easy to drive by hand.

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