Die cutting equipment for plant fiber tableware and meal boxes and using method of die cutting equipment

Abstract

The invention provides die cutting equipment for plant fiber tableware and meal boxes and a using method of the die cutting equipment, and belongs to the technical field of environment-friendly tableware machining equipment.The die cutting equipment for the plant fiber tableware and meal boxes comprises a bottom plate; the connecting plate is connected to the upper end of the bottom plate; the connecting frame is fixedly connected to the upper end of the connecting plate; the die cutting mechanism comprises a fixing plate, a lower rod, an upper rod, a round rod, an eccentric wheel and a die cutting assembly, transverse adjustment is conducted through a telescopic rod at the side end of a mounting plate, and guide positioning of the die cutting position can be achieved through cooperation between a limiting groove formed in a bottom plate and a limiting block fixed to the lower end of a connecting plate; the design not only improves the adaptability of the equipment to meal boxes with different sizes and specifications, but also can improve the production efficiency to a certain extent, and meets diversified product requirements.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmental protection tableware processing equipment, and particularly relates to a die-cutting device for plant fiber tableware lunch boxes and its use method. Background Art

[0002] With the promotion of the green manufacturing and sustainable development strategies, plant fiber tableware lunch boxes have been gradually widely used in the catering, takeaway and other industries due to their excellent characteristics such as being renewable and biodegradable. Die-cutting, as a key process link in the production of such products, is crucial for the forming quality and cutting accuracy of the products.

[0003] Some die-cutting devices for plant fiber products on the existing market usually have basic cutting mechanisms and drive systems, which can meet the processing requirements of products within a certain range. These devices are often equipped with limit adjustment devices or guiding structures, which help to improve the stability and repeated positioning accuracy during die-cutting operations, thus ensuring the consistency of product quality.

[0004] However, when dealing with diverse product specifications and complex shape requirements, the existing die-cutting devices may face some challenges. For example, some devices may have fewer options for height adjustment, which may limit their adaptability to lunch boxes of different thicknesses. In addition, in order to cope with lunch boxes of various sizes and specifications, it may be beneficial to flexibly adjust the position of the cutting device, but not all existing devices have this function. In terms of tool replacement, simplifying the operation process to reduce downtime is also a potential improvement direction to improve production efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a die-cutting device for plant fiber tableware lunch boxes and its use method, aiming to solve the problems in the existing technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A die-cutting device for plant fiber tableware lunch boxes, comprising: A bottom plate; A connecting plate, which is connected to the upper end of the bottom plate; A connecting frame, which is fixedly connected to the upper end of the connecting plate; At least one set of die-cutting mechanisms, each die-cutting mechanism comprising a fixing plate, a lower rod, an upper rod, a round rod, an eccentric wheel and a die-cutting assembly. The fixing plate is fixedly connected to the side end of the connecting frame. The lower rod is threadedly connected to the lower end of the fixing plate through a nut, and the lower end of the lower rod is connected to the connecting plate. The upper rod is threadedly connected to the upper end of the fixing plate through a nut. The round rod is rotatably connected to the side end of the upper rod. The eccentric wheel is connected to the circumferential surface of the round rod. The die-cutting assembly is arranged at the side end of the fixing plate to realize the cutting of tableware lunch boxes As a preferred embodiment of the present invention, the die-cutting assembly includes a bayonet, a first limiting disc, a die-cutting base and a cutting blade. The bayonet is slidably sleeved and connected to the fixed plate. The first limiting disc is fixedly connected to the upper end of the bayonet. The first limiting disc is matched with the eccentric wheel. The die-cutting base is fixedly connected to the lower end of the bayonet. The cutting blade is threadedly connected to the side end of the die-cutting base through a bolt.

[0007] As a preferred embodiment of the present invention, a positioning pin is fixedly connected to the circumferential surface of the round rod, and a positioning groove is fixedly connected to the side end of the eccentric wheel. The positioning groove is matched with the positioning pin.

[0008] As a preferred embodiment of the present invention, a second limiting disc is fixedly connected to the lower end of the first limiting disc, a first limiting disc is fixedly connected to the upper end of the die-cutting base, and a tension spring is sleeved and connected to the circumferential surface of the bayonet. The upper end of the tension spring is connected to the second limiting disc, and the lower end of the tension spring is connected to the first limiting disc.

[0009] As a preferred embodiment of the present invention, first gears are respectively fixedly connected to the left and right ends of the round rod, and a chain is meshed and rotatably connected to the circumferential surfaces of one set of the first gears and the first gears of another die-cutting mechanism.

[0010] As a preferred embodiment of the present invention, a telescopic rod is fixedly connected to the side end of the connecting frame, a convex block is fixedly connected to the output end of the telescopic rod, and a chain is sleeved and connected to the circumferential surfaces of one set of the first gears and the convex block.

[0011] As a preferred embodiment of the present invention, a limiting groove is opened at the upper end of the bottom plate, a limiting block is fixedly connected to the lower end of the connecting plate, and the limiting block is matched with the limiting groove.

[0012] As a preferred embodiment of the present invention, a mounting plate is fixedly connected to the side end of the connecting plate, a telescopic rod is fixedly connected to the side end of the mounting plate, a convex block is fixedly connected to the output end of the telescopic rod, and a notch is opened at the upper end of the bottom plate. The convex block is clamped with the notch.

[0013] As a preferred embodiment of the present invention, a return spring is sleeved and connected to the circumferential surface of the telescopic rod.

[0014] A method for using a die-cutting device for a plant fiber tableware lunch box includes the following steps: S1: Equipment preparation and positioning adjustment: First, place the plant fiber tableware lunch box to be die-cut on the working platform above the connecting plate, and ensure that the cutting area of the lunch box is directly below the cutting blade. Subsequently, perform horizontal adjustment through the telescopic rod at the side end of the mounting plate, so that the bump at the output end slides along the notch opened on the bottom plate, realizing precise positioning of the die-cutting position. At the same time, the return spring is sleeved outside the telescopic rod to maintain the structural stability and assist in subsequent return. S2: Drive the die-cutting mechanism to operate: Start the telescopic rod. The bump fixedly connected to its output end drives the chain to move. The chain surrounds the surface of one set of first gears. This first gear is fixedly connected to one end of the round rod. As the chain drives, it drives the other set of first gears and the round rod to rotate synchronously, thereby controlling the eccentric wheel to perform periodic eccentric rotation according to the set trajectory. S3: Execute the die-cutting action: The eccentric end of the eccentric wheel is provided with a positioning groove, which cooperates with the positioning pin fixed on the circumferential surface of the round rod to form a stable linkage structure. When the eccentric wheel rotates, its eccentric part pushes the bayonet. The bayonet is fixedly connected to the upper end of the sleeve rod, and the sleeve rod is slidably sleeved on the fixed plate, and the lower end is connected to the die-cutting seat. Under the action of the eccentric force, the sleeve rod slides up and down along the fixed plate, compresses the tension spring, and maintains the movement stability through the second limit disk and the first limit disk, and finally drives the cutting blade to move downward to complete the cutting action. S4: Reset and cyclic operation: After completing one die-cutting, cut off the power input of the telescopic rod. The telescopic rod returns to its initial position under the action of the return spring. At the same time, the tension spring pushes the die-cutting assembly to reset upward, so that the cutting blade disengages from the surface of the lunch box and returns to the starting height. Subsequently, take out the die-cut plant fiber tableware lunch box and repeat the above steps to continue the die-cutting process of the next product.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this solution: Through the horizontal adjustment of the telescopic rod at the side end of the mounting plate, and the cooperation between the limit groove opened on the bottom plate and the limit block fixed at the lower end of the connecting plate, the guiding and positioning of the die-cutting position can be realized. This design not only improves the adaptability of the equipment to lunch boxes of different sizes and specifications, but also can improve the production efficiency to a certain extent and meet the diverse product requirements.

[0016] 2. In this solution: The cutting blade is connected to the side end of the die-cutting seat by bolts in a threaded manner, making the replacement of the tool more simple and fast. Such a design reduces the downtime, improves the overall operation efficiency of the production line, simplifies the maintenance process, and reduces the operation difficulty and cost.

[0017] 3. In this solution: By adopting the design of matching an eccentric wheel with a positioning pin on a round rod, the stability and accuracy of the die-cutting assembly during movement are ensured. Meanwhile, the setting of the tension spring helps to maintain the smoothness of the sleeve rod during up-and-down sliding, further ensuring the consistency and accuracy of the cutting action, thereby improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings: Figure 1 is the first perspective three-dimensional view of the present invention; Figure 2 is the second perspective three-dimensional view of the present invention; Figure 3 is the exploded view of the present invention; Figure 4 is of the present invention Figure 3 the exploded view at the bottom plate; Figure 5 is of the present invention Figure 3 the exploded view at the fixed plate; Figure 6 is of the present invention Figure 5 the exploded view at the fixed plate; Figure 7 is of the present invention Figure 6 the enlarged view at the die-cutting seat of the present invention; Figure 8 is of the present invention Figure 3 the enlarged view at the telescopic rod of the present invention.

[0019] In the figures: 1. bottom plate; 2. connecting plate; 3. connecting frame; 4. fixed plate; 401. lower rod; 402. upper rod; 403. round rod; 404. first gear; 405. eccentric wheel; 406. positioning groove; 407. positioning pin; 408. sleeve rod; 409. first limiting disc; 410. second limiting disc; 411. tension spring; 412. bayonet; 413. die-cutting seat; 414. cutting blade; 415. chain; 5. limiting groove; 501. limiting block; 6. mounting plate; 601. telescopic rod; 602. convex block; 603. return spring; 604. notch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1 Please refer to Figures 1-8 , the present invention provides the following technical solutions: A die-cutting device for a plant fiber tableware lunch box, comprising: A bottom plate 1; A connecting plate 2, and the connecting plate 2 is connected to the upper end of the bottom plate 1; A connecting frame 3, and the connecting frame 3 is fixedly connected to the upper end of the connecting plate 2; At least one set of die-cutting mechanisms, and each die-cutting mechanism includes a fixing plate 4, a lower rod 401, an upper rod 402, a round rod 403, an eccentric wheel 405 and a die-cutting assembly. The fixing plate 4 is fixedly connected to the side end of the connecting frame 3. The lower rod 401 is threadedly connected to the lower end of the fixing plate 4 through a nut, and the lower end of the lower rod 401 is connected to the connecting plate 2. The upper rod 402 is threadedly connected to the upper end of the fixing plate 4 through a nut. The round rod 403 is rotatably connected to the side end of the upper rod 402. The eccentric wheel 405 is connected to the circumferential surface of the round rod 403. The die-cutting assembly is arranged at the side end of the fixing plate 4 to cut the tableware lunch box.

[0024] In a specific embodiment of the present invention, when an operator places the plant fiber tableware lunch box to be die-cut in the working area above the connecting plate 2 and ensures that the cutting part of the lunch box is aligned with the cutting blade 414 in the die-cutting assembly; in this way, it provides a basic positioning guarantee for subsequent accurate cutting.

[0025] When the lower rod 401 is fixedly connected to the lower end of the fixed plate 4 through nut threads and its lower end is connected to the connecting plate 2, and at the same time the upper rod 402 is also fixedly connected to the upper end of the fixed plate 4 through nut threads; in this way, the stable installation of the overall structure of the die-cutting mechanism is realized, which is convenient for height adjustment according to actual needs.

[0026] When the round rod 403 is rotatably connected to the side end of the upper rod 402, an eccentric wheel 405 is arranged on its circumferential surface, and the eccentric wheel 405 cooperates with the die-cutting assembly in motion; in this way, the up-and-down reciprocating motion of the cutting blade 414 can be realized, thereby completing the cutting action on the lunch box.

[0027] When the die-cutting assembly includes a sleeve rod 408, a bayonet 412, a die-cutting seat 413 and a cutting blade 414, where the sleeve rod 408 is slidably sleeved on the fixed plate 4, its upper end is connected to the bayonet 412, the lower end is connected to the die-cutting seat 413, and the cutting blade 414 is fixed to the side end of the die-cutting seat 413 by bolts; in this way, when the eccentric wheel 405 rotates with the round rod 403 and pushes the bayonet 412 to move, the die-cutting seat 413 is driven to move downward, so that the cutting blade 414 completes the cutting action on the plant fiber tableware lunch box.

[0028] When a telescopic rod 7 is further provided at the side end of the connecting frame 3, its output end is connected to a convex block 701 and is drivingly connected to the round rod 403 through a chain 702 to drive the round rod 403 to rotate; in this way, the power input and linkage control of the die-cutting action are realized, and the coordination and stability of the equipment operation are improved.

[0029] When a limiting groove 5 is opened on the bottom plate 1 and a limiting block 501 matching it is provided at the bottom of the connecting plate 2 for restricting the lateral movement of the connecting plate 2; in this way, the overall stability of the equipment is further improved.

[0030] Specifically, please refer to Figures 1-8 , the die-cutting assembly includes a bayonet 408, a first limiting disc 412, a die-cutting seat 413 and a cutting blade 414. The bayonet 408 is slidably sleeved and connected to the fixed plate 4. The first limiting disc 412 is fixedly connected to the upper end of the bayonet 408. The first limiting disc 412 is matched with the eccentric wheel 405. The die-cutting seat 413 is fixedly connected to the lower end of the bayonet 408. The cutting blade 414 is connected to the side end of the die-cutting seat 413 through bolt threads.

[0031] In this embodiment: when the bayonet 408 is slidably sleeved and connected to the fixed plate 4; in this way, the bayonet 408 can slide up and down under the guidance of the fixed plate 4, ensuring the linearity and stability of the die-cutting action.

[0032] When the first limiting plate 412 is fixedly connected to the upper end of the bayonet 408 and the first limiting plate 412 matches the eccentric wheel 405, during the rotation of the eccentric wheel 405, through its periodic contact and pushing action, it can drive the bayonet 408 and the components below it to achieve precise up and down movement, thereby controlling the cutting blade 414 to cut the plant fiber tableware lunch box.

[0033] When the die-cutting seat 413 is fixedly connected to the lower end of the bayonet 408, and the cutting blade 414 is threadedly connected to the side end of the die-cutting seat 413 by bolts; in this way, the cutting blade 414 can move synchronously with the up and down movement of the bayonet 408, thereby completing the precise cutting of the lunch box material placed in the working area below.

[0034] When the device is running, the round rod 403 is driven to rotate, causing the eccentric wheel 405 to make eccentric motion around the axis of the round rod 403; in this way, the edge of the eccentric wheel 405 will periodically push the first limiting plate 412, causing the bayonet 408, the die-cutting seat 413 and the cutting blade 414 to move downward as a whole, exerting pressure on the lunch box material and cutting it.

[0035] When the cutting action is completed, since the eccentric wheel 405 continues to rotate away from the contact position with the first limit plate 412, under the action of the tensioning spring 411, the bayonet 408 together with the die-cutting seat 413 and the cutting blade 414 return to the initial position; in this way, preparations are made for the next cutting, while ensuring the continuity and efficiency of the entire die-cutting process.

[0036] For details, please refer to Figures 1-8 A positioning pin 407 is fixedly connected to the circumferential surface of the round rod 403 , and a positioning groove 406 is fixedly connected to the side end of the eccentric wheel 405 , and the positioning groove 406 matches the positioning pin 407 .

[0037] In this embodiment: For details, please refer to Figures 1-8 The lower end of the first limiting plate 412 is fixedly connected to the second limiting plate 410, the upper end of the die-cutting seat 413 is fixedly connected to the first limiting plate 409, the circumferential surface of the bayonet 408 is sleeved with a tensioning spring 411, the upper end of the tensioning spring 411 is connected to the second limiting plate 410, and the lower end of the tensioning spring 411 is connected to the first limiting plate 409.

[0038] In this embodiment: when the circumferential surface of the round rod 403 is fixedly connected with a positioning pin 407, and the side end of the eccentric wheel 405 is provided with a positioning groove 406 matching it; in this way, the eccentric wheel 405 can be stably linked with the positioning pin 407 through the positioning groove 406, ensuring that the eccentric wheel 405 will not slide or misalign relative to each other during rotation.

[0039] When the round rod 403 rotates with the driving device; in this way, the positioning pin 407 rotates synchronously therewith, and drives the whole eccentric wheel 405 to rotate synchronously around the axis of the round rod 403, thus ensuring the regularity and consistency of the eccentric motion.

[0040] When the eccentric part of the eccentric wheel 405 contacts and applies a thrust to the bayonet 412 in the die-cutting assembly during rotation; in this way, due to the limiting effect of the cooperation between the positioning pin 407 and the positioning groove 406, the power transmission of the eccentric wheel 405 is more accurate, avoiding cutting errors caused by slipping or deviation.

[0041] When the equipment runs for a long time or is affected by external vibration; in this way, the tight fit between the positioning pin 407 and the positioning groove 406 can still maintain the connection stability between the round rod 403 and the eccentric wheel 405, preventing the loosening of components and causing a decrease in die-cutting accuracy.

[0042] In summary, after the above structure is assembled, through the cooperation of the positioning pin 407 and the positioning groove 406, a stable, synchronous and accurate transmission connection between the round rod 403 and the eccentric wheel 405 is achieved; in this way, during the whole die-cutting process, the equipment runs more smoothly, the cutting action is more consistent, effectively improving the quality and efficiency of die-cutting and forming of plant fiber tableware lunch boxes.

[0043] Specifically, please refer to Figures 1-8 , the left and right ends of the round rod 403 are respectively fixedly connected with a first gear 404, and a chain 415 is meshed and rotationally connected to the circumferential surfaces of one set of the first gears 404 and the first gears 404 of the other die-cutting mechanism.

[0044] In this embodiment: when the left and right ends of the round rod 403 are respectively fixedly connected with the first gears 404, and one set of the first gears 404 is rotationally connected with the first gears 404 in the other die-cutting mechanism through the chain 415; in this way, the two die-cutting mechanisms can be synchronously linked through the chain 415, ensuring that the die-cutting actions on both sides are coordinated.

[0045] When the driving device drives the round rod 403 of one set of die-cutting mechanisms to rotate; in this way, the first gear 404 on this side rotates accordingly, and drives the first gear 404 on the other side to rotate synchronously through the chain 415, and then the round rods 403 on both sides rotate simultaneously, ensuring the synchronism of the eccentric wheel 405 driving the die-cutting assembly to work.

[0046] When the chain 415 meshes and transmits power on the surface of the first gear 404; in this way, the power can be effectively transmitted and the transmission error can be reduced, avoiding the influence of gear misalignment or slipping on the die-cutting accuracy, especially suitable for the equipment structure with multiple working positions or multiple sets of die-cutting assemblies working simultaneously.

[0047] When there is uneven load or starting impact during the operation of the device; in this way, the meshing structure between the chain 415 and the first gear 404 can still maintain stable transmission, and has a certain buffering and anti-overload capacity, thereby improving the reliability and service life of the device operation.

[0048] Specifically, please refer to Figures 1-8 One side of the connecting frame 3 is fixedly connected with a telescopic rod 7, and the output end of the telescopic rod 7 is fixedly connected with a convex block 701. A chain 702 is sleeved on the circumferential surface of one set of the first gears 404 and the convex block 701.

[0049] In this embodiment: when one side of the connecting frame 3 is fixedly connected with a telescopic rod 7 and the output end of the telescopic rod 7 is provided with a convex block 701; in this way, by controlling the telescopic movement of the telescopic rod 7, the convex block 701 can be driven to perform a linear reciprocating motion, providing a power input basis for subsequent transmission.

[0050] When one set of the first gears 404 and the circumferential surface of the convex block 701 are sleeved and connected by a chain 702; in this way, the telescopic rod 7 drives the convex block 701 to rotate, and then drives the first gear 404 to rotate through the chain 702, thereby transmitting the power to the round rod 403 to realize the power input of the die-cutting mechanism.

[0051] When the telescopic rod 7 starts and drives the chain 702 to transmit; in this way, it can stably drive the first gear 404 to rotate, and drive the first gear 404 on the other side to rotate synchronously through the chain 415, ensuring that the two sides of the die-cutting components complete the cutting action in a coordinated manner.

[0052] When the device needs to adjust the die-cutting frequency or pause operation; in this way, by controlling the telescopic speed or stop action of the telescopic rod 7, the rotation speed of the first gear 404 can be flexibly adjusted or the transmission can be stopped, improving the controllability and adaptability of the device operation.

[0053] Specifically, please refer to Figures 1-8 A limiting groove 5 is opened at the upper end of the bottom plate 1, and a limiting block 501 is fixedly connected to the lower end of the connecting plate 2. The limiting block 501 is matched with the limiting groove 5.

[0054] In this embodiment: when a limiting groove 5 is opened at the upper end of the bottom plate 1 and a limiting block 501 that matches it is fixedly connected to the lower end of the connecting plate 2; in this way, the limiting block 501 can be embedded in the limiting groove 5 to realize the lateral positioning of the connecting plate 2 and prevent it from shifting or shaking during the die-cutting process.

[0055] When the device is affected by vibration or external force during operation; in this way, the matching structure between the limiting block 501 and the limiting groove 5 can effectively limit the lateral movement of the connecting plate 2, thereby improving the stability of the overall structure and the die-cutting accuracy.

[0056] When it is necessary to install or disassemble and maintain the connecting plate 2; in this way, by sliding the limit block 501 into or out of the limit groove 5, rapid assembly and separation can be achieved, facilitating the debugging, cleaning or component replacement of the equipment.

[0057] When the die-cutting equipment works continuously for a long time; in this way, the tight fit between the limit groove 5 and the limit block 501 can still maintain the stable position of the connecting plate 2, avoiding structural loosening caused by thermal deformation or fatigue, thereby ensuring the consistency of the die-cutting quality.

[0058] Specifically, please refer to Figures 1-8 , the side end of the connecting plate 2 is fixedly connected with a mounting plate 6, the side end of the mounting plate 6 is fixedly connected with a telescopic rod 601, the output end of the telescopic rod 601 is fixedly connected with a convex block 602, and a notch 604 is opened at the upper end of the bottom plate 1, and the convex block 602 is engaged with the notch 604.

[0059] In this embodiment: when the side end of the connecting plate 2 is fixedly connected with a mounting plate 6, and the mounting plate 6 is further fixedly connected with a telescopic rod 601, and a convex block 602 is provided at the output end of the telescopic rod 601; in this way, the telescopic movement of the telescopic rod 601 can drive the convex block 602 to move back and forth, providing an auxiliary positioning and clamping function for the die-cutting equipment.

[0060] When a notch 604 matching the convex block 602 is opened at the upper end of the bottom plate 1; in this way, the convex block 602 can be inserted into the notch 604 under the drive of the telescopic rod 601, realizing further locking of the positions of the mounting plate 6 and the connecting plate 2, and enhancing the stability of the overall structure during the die-cutting process.

[0061] Before the equipment starts to run, when the operator starts the telescopic rod 601 and makes the convex block 602 at its output end move inward and engage with the notch 604; in this way, it can effectively prevent the connecting plate from shifting due to vibration or uneven force during the die-cutting process, ensuring that the die-cutting assembly is always in the set working position.

[0062] When it is necessary to adjust the die-cutting position or replace the die; in this way, only need to control the telescopic rod 601 to make the convex block 602 withdraw from the notch 604, and the limit state can be quickly released, facilitating the repositioning or disassembly and maintenance of the connecting plate 2 and the die-cutting assembly.

[0063] Specifically, please refer to Figures 1-8 , a return spring 603 is sleeved and connected on the circumferential surface of the telescopic rod 601.

[0064] In this embodiment: when a return spring 603 is sleeved and connected on the circumferential surface of the telescopic rod 601; in this way, one end of the return spring 603 is fixed on the mounting plate 6, and the other end is connected to the convex block 602 or a specific limit structure of the telescopic rod 601, providing a return force for the telescopic rod 601.

[0065] When the device is in operation, the telescopic rod 601 is driven to extend outward, driving the protrusion 602 to disengage from the notch 604 on the bottom plate 1; thus, the reset spring 603 is compressed to store elastic potential energy, preparing for subsequent automatic reset.

[0066] When the die-cutting operation is completed or the equipment needs to be adjusted, it is only necessary to cut off the power input of the telescopic rod 601, and the return spring 603 can rely on the elastic potential energy stored previously to push the telescopic rod 601 and the protrusion 602 at its output end to automatically return to the initial position, thereby quickly releasing the locking state and improving operating efficiency.

[0067] When the equipment is frequently started and stopped or runs continuously, the reset spring 603 can not only assist the telescopic rod 601 in completing the automatic reset of the reciprocating motion, but also play a role in buffering and shock absorption, reducing mechanical shock and extending the service life of components.

[0068] The working principle and use process of the present invention are as follows: first, place the plant fiber tableware lunch box to be die-cut on the working platform above the connecting plate 2, and ensure that the cutting area of the lunch box is directly under the cutting blade 414; then, the telescopic rod 601 at the side end of the mounting plate 6 is adjusted laterally so that the protrusion 602 at its output end slides along the notch 604 provided on the bottom plate 1, so as to achieve accurate positioning of the die-cutting position; at the same time, the reset spring 603 is sleeved on the outer side of the telescopic rod 601 to maintain the stability of the structure and assist in subsequent return; start the telescopic rod 7, and the protrusion 701 fixedly connected at its output end drives the chain 702 to move, and the chain 702 surrounds the surface of one group of first gears 404, and the first gear 404 is fixedly connected to one end of the round rod 403. As the chain 702 is driven, the other group of first gears 404 and the round rod 403 are driven to rotate synchronously, thereby controlling the eccentric wheel 405 to perform periodic eccentric rotation according to the set trajectory; the eccentric end of the eccentric wheel 405 is provided with a positioning The groove 406 cooperates with the positioning pin 407 fixed on the circumferential surface of the round rod 403 to form a stable linkage structure; when the eccentric wheel 405 rotates, its eccentric part pushes the bayonet 412, and the bayonet 412 is fixedly connected to the upper end of the sleeve rod 408, and the sleeve rod 408 is slidably sleeved on the fixed plate 4, and the lower end is connected to the die-cutting seat 413; under the action of the eccentric force, the sleeve rod 408 slides up and down along the fixed plate 4, compresses the tensioning spring 411, and maintains the movement stability through the second limit plate 410 and the first limit plate 409, and finally drives the cutting blade 414 to move downward to complete the cutting action; after completing one die-cutting, cut off the power input of the telescopic rod 7, and the telescopic rod 601 returns to the initial position under the action of the reset spring 603, and at the same time, the tensioning spring 411 pushes the die-cutting assembly to reset upward, so that the cutting blade 414 is separated from the surface of the lunch box and returns to the starting height; then take out the plant fiber tableware lunch box that has been cut, and repeat the above steps to continue the die-cutting process of the next product.

[0069] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A die-cutting device for a plant fiber tableware lunch box, characterized in that, Comprising: Bottom plate (1); Connecting plate (2), which is connected to the upper end of the bottom plate (1); Connecting frame (3), which is fixedly connected to the upper end of the connecting plate (2); At least one set of die-cutting mechanism, the die-cutting mechanism includes a fixed plate (4), a lower rod (401), an upper rod (402), a round rod (403), an eccentric wheel (405) and a die-cutting assembly. The fixed plate (4) is fixedly connected to the side end of the connecting frame (3). The lower rod (401) is threadedly connected to the lower end of the fixed plate (4) through a nut. The lower end of the lower rod (401) is connected to the connecting plate (2). The upper rod (402) is threadedly connected to the upper end of the fixed plate (4) through a nut. The round rod (403) is rotatably connected to the side end of the upper rod (402). The eccentric wheel (405) is connected to the circumferential surface of the round rod (403). The die-cutting assembly is arranged at the side end of the fixed plate (4) to realize the cutting of tableware lunch boxes.

2. The die-cutting device for a plant fiber tableware lunch box according to claim 1, characterized in that: The die-cutting assembly includes a bayonet (408), a first limiting disc (412), a die-cutting seat (413) and a cutting blade (414). The bayonet (408) is slidably sleeved and connected to the fixed plate (4). The first limiting disc (412) is fixedly connected to the upper end of the bayonet (408). The first limiting disc (412) is matched with the eccentric wheel (405). The die-cutting seat (413) is fixedly connected to the lower end of the bayonet (408). The cutting blade (414) is threadedly connected to the side end of the die-cutting seat (413) through a bolt.

3. The die-cutting device for a plant fiber tableware lunch box according to claim 2, characterized in that: A positioning pin (407) is fixedly connected to the circumferential surface of the round rod (403). A positioning groove (406) is fixedly connected to the side end of the eccentric wheel (405). The positioning groove (406) is matched with the positioning pin (407).

4. The die-cutting device for a plant fiber tableware lunch box according to claim 3, characterized in that: A second limiting disc (410) is fixedly connected to the lower end of the first limiting disc (412). A first limiting disc (409) is fixedly connected to the upper end of the die-cutting seat (413). A tension spring (411) is sleeved and connected to the circumferential surface of the bayonet (408). The upper end of the tension spring (411) is connected to the second limiting disc (410). The lower end of the tension spring (411) is connected to the first limiting disc (409).

5. The die-cutting device for a plant fiber tableware lunch box according to claim 4, characterized in that: First gears (404) are respectively fixedly connected to the left and right ends of the round rod (403). A chain (415) is meshed and rotatably connected to the circumferential surface of one set of the first gears (404) and the first gears (404) of another set of die-cutting mechanisms.

6. The die-cutting device for a plant fiber tableware lunch box according to claim 5, characterized in that: A telescopic rod (7) is fixedly connected to the side end of the connecting frame (3). A convex block (701) is fixedly connected to the output end of the telescopic rod (7). A chain (702) is sleeved and connected to the circumferential surface of one set of the first gears (404) and the convex block (701).

7. A die-cutting device for a plant fiber tableware lunch box according to claim 6, characterized in that: A limiting groove (5) is opened at the upper end of the bottom plate (1). A limiting block (501) is fixedly connected to the lower end of the connecting plate (2). The limiting block (501) is matched with the limiting groove (5).

8. The die-cutting device for a plant fiber tableware lunch box according to claim 7, characterized in that: A mounting plate (6) is fixedly connected to the side end of the connecting plate (2). An expansion rod (601) is fixedly connected to the side end of the mounting plate (6). A convex block (602) is fixedly connected to the output end of the expansion rod (601). A notch (604) is formed in the upper end of the bottom plate (1). The convex block (602) is clamped with the notch (604).

9. The die-cutting device for a plant fiber tableware lunch box according to claim 8, characterized in that: A return spring (603) is sleeved on the circumferential surface of the expansion rod (601).

10. A method of using a die-cutting device for a plant fiber tableware lunch box, which uses a die-cutting device for a plant fiber tableware lunch box according to any one of claims 1-9, characterized in that, It includes the following steps: S1: Equipment preparation and positioning adjustment: First, place the plant fiber tableware lunch box to be die-cut on the working platform above the connecting plate (2), and ensure that the cutting area of the lunch box is directly below the cutting blade (414). Subsequently, perform horizontal adjustment through the expansion rod (601) at the side end of the mounting plate (6), so that the convex block (602) at its output end slides along the notch (604) formed on the bottom plate (1) to achieve precise positioning of the die-cutting position. At the same time, the return spring (603) is sleeved outside the expansion rod (601) to maintain the structural stability and assist in subsequent return; S2: Drive the die-cutting mechanism to operate: Start the expansion rod (7). The convex block (701) fixedly connected to its output end drives the chain (702) to move. The chain (702) is wound around the surface of one group of first gears (404). The first gear (404) is fixedly connected to one end of the round rod (403). As the chain (702) drives, it drives the other group of first gears (404) and the round rod (403) to rotate synchronously, thereby controlling the eccentric wheel (405) to perform periodic eccentric rotation according to the set trajectory; S3: Execute the die-cutting action: A positioning groove (406) is provided at the eccentric end of the eccentric wheel (405), which cooperates with the positioning pin (407) fixed on the circumferential surface of the round rod (403) to form a stable linkage structure. When the eccentric wheel (405) rotates, its eccentric part pushes the bayonet (412). The bayonet (412) is fixedly connected to the upper end of the sleeve rod (408). The sleeve rod (408) is slidably sleeved on the fixed plate (4) and is connected to the die-cutting seat (413) at the lower end. Under the action of the eccentric force, the sleeve rod (408) slides up and down along the fixed plate (4), compresses the tension spring (411), and maintains the movement stability through the second limit disc (410) and the first limit disc (409). Finally, it drives the cutting blade (414) to move downward to complete the cutting action; S4: Reset and cyclic operation: After completing one die-cutting, cut off the power input of the expansion rod (7). The expansion rod (601) returns to its initial position under the action of the return spring (603). At the same time, the tension spring (411) pushes the die-cutting assembly to reset upward, so that the cutting blade (414) disengages from the surface of the lunch box and returns to the starting height. Subsequently, take out the die-cut plant fiber tableware lunch box and repeat the above steps to continue the die-cutting process of the next product.

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