Flat-bed creasing and cutting machine

Abstract

The present application discloses a flat pressing indentation cutting line machine, relates to the paperboard processing technical field, including the machine body, still includes: the limiting component, it sets up in the machine body top, including the abutment and the clamping block, for the bottom and the side of paperboard are limited;Adjusting assembly, it is arranged in the machine body inside, for adjusting the position of paperboard, make paperboard press cut when accurate positioning;Exhaust component, it is arranged in the machine body inside, including cylinder and piston, for extrusion discharge and suction gas, make gas clean and dehumidification adjusting assembly;Compensation component, it is arranged in the machine body inside, including support column and movable plug, through the conveying device promotes paperboard and clamping block close contact, to ensure that paperboard is accurately positioned before pressing cut, the air jet of air jet is clean residual paper scraps and dehumidification dry on paperboard surface, and suction promotes paperboard and die cutting assembly separation, gas carries out distance compensation simultaneously, eliminate the wear and tear influence of conveying device, promote paperboard better and press cut.

Description

Technical Field

[0001] This invention relates to the field of cardboard processing technology, and in particular to a flatbed creasing and cutting machine. Background Technology

[0002] A flatbed creasing and ribbing machine, commonly known as a die-cutting machine, is a machine that uses vertical pressure to creasing, cutting, and embossing materials such as cardboard, paperboard, and corrugated cardboard. Its core working principle is "flat-on-flat," which means that a flat pressure plate and another flat pressure plate equipped with a mold press against each other in a vertical direction, pressing fold lines into the paperboard or cardboard so that subsequent folding can be precise and neat. It also cuts the material completely according to the preset shape. The creasing and cutting are combined, and the cutting of a paper blank and the creasing of all fold lines are completed in one press. It is used to produce various paper product packaging.

[0003] Chinese Patent No. CN114506117B discloses a flatbed creasing and cutting machine. The machine body is provided with a fixed pressure plate and a movable pressure plate. The machine body is provided with a rotating mechanism for driving the movable pressure plate to rotate towards or away from the fixed pressure plate. The fixed pressure plate is provided with a cutting die and also includes a feeding mechanism.

[0004] Chinese Patent Publication No. CN112720691B discloses a flatbed creasing and slitting machine, which includes a frame and a slitting machine body mounted on the frame. An automatic feeding device is provided on the frame. The automatic feeding device includes a rotating frame for conveying paperboard into the slitting machine body, a conveying component for conveying paperboard onto the rotating frame, and an adsorption component for adsorbing and clamping the paperboard.

[0005] The above technical solution has some problems in use. For example, when the operator places the cardboard on the pressure plate, the cardboard is not placed in the right position when it is placed continuously and quickly, or the cardboard rebounds partially under its own elasticity, resulting in the side of the cardboard not contacting the limiting structure for positioning, which in turn leads to low subsequent cutting accuracy and poor cutting effect.

[0006] In addition, during the positioning and adjustment process, the cardboard often bends as it moves. The bent cardboard affects the subsequent die-cutting process, and the moving conveyor device is prone to wear and tear due to prolonged friction with the cardboard. This results in insufficient die-cutting depth and affects the die-cutting quality of the cardboard, which is detrimental to subsequent processing.

[0007] Furthermore, the die-cutting process is often carried out in the factory. Paperboard is prone to sticking with paper dust and small debris during production, storage and transfer. The factory environment is also prone to moisture absorption and dampness of paperboard, which can easily cause tearing and rough edges during the die-cutting process.

[0008] Furthermore, when the die-cutting is completed and the parts are separated, the cardboard often sticks to the die-cutting components and is lifted up due to vacuum adsorption, static electricity, or the hooking of cardboard fibers, which causes misalignment and poor die-cutting results.

[0009] Therefore, it is necessary to invent a flat-pressure indentation and tangling machine to solve the above problems. Summary of the Invention

[0010] The purpose of this invention is to provide a flat-press creasing and tangling machine to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a flatbed creasing and cutting machine, comprising a machine body and a cardboard placed inside, and further comprising: The limiting component, which is located inside the machine body on one side, includes a stop block and a locking block, and is used to limit the bottom and sides of the cardboard; An adjustment component, located inside the machine body, is used to adjust the position of the cardboard; The exhaust assembly, located on one side of the adjustment assembly, includes a cylinder and a piston, used to expel and draw in gas, and the cylinder exhausts gas after the cardboard is pressed and fixed, thus flattening the cardboard. A compensation component, located below the adjustment component, includes a support column and a movable plug, used to support the adjustment component and compensate for wear of the adjustment component; The die-cutting assembly is fixedly connected to the other side inside the machine body. It is used to cut the cardboard, and after the cutting is completed, the cylinder extracts air to demold the cardboard from the die-cutting assembly.

[0012] Preferably, the body comprises: The machine body has a plate platform fixedly connected to its side; The pressure plate is movably connected to the machine body through a transmission system, and the cardboard is placed on the pressure plate to drive the pressure plate to move and cooperate with the plate table for pressing and cutting. An angle sensor is fixedly installed at the output end of the transmission system.

[0013] Preferably, the limiting component further includes: The limiting block, which is fixedly installed inside the cardboard block by an elastic element, is used to press and limit the cardboard. The abutment block is fixed to the bottom surface of the pressure plate, and the locking block is fixed to the bottom side of the pressure plate. The abutment block limits the bottom of the cardboard, and the locking block limits the side of the cardboard.

[0014] Preferably, the limiting component further includes: The inclined plate has its top slidably connected to the inner top of the card block, one end of its inclined surface slidably engages with the top inclined surface of the limiting block, and the other end is fixedly connected to a scraper, which is used to clean the inner top of the card block in conjunction with the movement of the limiting block. The air jet, located on the inner top of the card block, is used to push the limiting block to press the cardboard with gas ejected from the air jet.

[0015] Preferably, the adjustment component includes: The conveying device is slidably connected to the inside of the pressure plate on its side, and a pressure sensor is fixedly installed inside it to convey and position the cardboard placed on the surface of the pressure plate. The drive mechanism is fixedly installed on the side of the conveyor, and its output end is connected to the drive end of the conveyor to drive the operation of the conveyor.

[0016] Preferably, the exhaust assembly further includes: The air duct has its inlet end connected to the outlet end of the cylinder and its outlet end connected to the inlet end of the air jet. The cylinder is fixedly installed on the side of the conveying device. The outer surface of the piston is slidably connected to the inside of the cylinder. The piston input end is rotatably connected to the drive mechanism and is used to transmit the gas generated inside the cylinder through the air pipe.

[0017] Preferably, the compensation component further includes: The vent valve has its input end connected to a branch of the vent pipe output end via a three-way valve; The bottom of the support column is fixedly connected to the inside of the pressure plate, the side of the support column is connected to the output end of the vent valve, the side of the movable plug is slidably connected to the inside of the support column, and the top of the movable plug is fixedly installed to the bottom of the conveying device for pushing the conveying device upward to compensate for wear.

[0018] Preferably, the compensation component further includes: A connecting frame, one end of which is fixedly connected to the movable end of the vent valve, and the other end of which is fixedly connected to a locking block. The side of the locking block is slidably connected to the side wall of the support column, and one end of the locking block is tightly fitted to the side of the movable plug. This is used to move the movable end of the vent valve to open and drive the connecting frame and the locking block to move, so as to release the locking block from locking the movable plug. The push rod is fixedly installed on the side of the support column, and its telescopic end is fixedly installed on the side of the connecting frame.

[0019] Preferably, the die-cutting assembly includes: A substrate is fixedly mounted on the side of the printing plate. A die-cutting blade and a spring pad are fixedly mounted on the side of the substrate for pressing and cutting the cardboard. Ventilation holes are located inside the spring pad, and sliding fasteners and pins are slidably connected inside to separate the cardboard from the spring pad after pressing and cutting.

[0020] The technical effects and advantages of this invention are as follows: 1. This invention promotes close contact between the cardboard and the card block through a conveying device, thereby ensuring accurate positioning of the cardboard before pressing and cutting. It avoids the cardboard from partially rebounding under its own elasticity during placement, which would ultimately result in the side of the cardboard not contacting the card block and thus lead to poor subsequent pressing and cutting results. This process effectively improves the quality of the pressed and cut cardboard, resulting in better subsequent pressing and cutting results, and the operation of placing the cardboard is smoother and more accurate.

[0021] 2. This invention uses gas ejected from the jet nozzle to push the limiting block to press and fix the edge of the cardboard. The compressed gas cleans the residual paper scraps on the surface of the cardboard, dehumidifies and dries it, ensuring the subsequent pressing and cutting effect of the cardboard. The airflow can flatten the cardboard and eliminate the influence of the conveying device on the cardboard during transmission.

[0022] 3. This invention transmits gas to the support column through a vent valve, which pushes the movable plug in the support column to move the conveying device upward, thereby compensating for distance and eliminating the wear and tear caused by the long-term conveying of the cardboard by the conveying device. This ensures the cutting depth during the cutting process and further promotes better cutting of the cardboard.

[0023] 4. This invention uses air intake through the jet port during piston return stroke. The gas promotes the separation of the cardboard and the spring pad. The gas passing through the ventilation hole pushes the moving buckle to move and causes the ejector pin to extend outward, which further separates the cardboard and the spring pad, prevents the spring pad from jamming, and achieves continuous high-speed production, thereby achieving the best quality under standard processing conditions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the body structure of the present invention; Figure 3 This is a top-sectional view of the structure of the present invention; Figure 4 This is a schematic diagram of the adjustment component structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the compensation component structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the support column of the present invention; Figure 8 This is a schematic diagram of the card block structure of the present invention; Figure 9 This is a schematic diagram of the elastic pad structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point B.

[0025] In the diagram: 1. Machine body; 101. Machine frame; 102. Printing table; 103. Pressure plate; 104. Transmission system; 105. Angle sensor; 2. Cardboard; 3. Limiting assembly; 301. Stop block; 302. Locking block; 303. Elastic element; 304. Limiting block; 305. Inclined plate; 306. Scraper; 307. Air nozzle; 4. Adjusting assembly; 401. Conveying device; 402. Pressure sensor; 403. 5. Drive mechanism; 6. Exhaust assembly; 7. Cylinder; 8. Piston; 9. Ventilation pipe; 10. Compensation assembly; 11. Support column; 12. Movable plug; 13. Ventilation valve; 14. Connecting frame; 15. Push rod; 16. Locking block; 17. Die-cutting assembly; 18. Base plate; 19. Die-cutting blade; 10. Spring pad; 11. Ventilation hole; 12. Movable buckle; 13. Ejector pin. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention provides, for example Figures 1 to 10 The flatbed creasing and cutting machine shown includes: a machine body 1 and a cardboard 2 placed inside. The machine body 1 includes a body 101, which is fixed next to the operating table, and a platen 102 is fixedly connected to its side; a pressure plate 103, which is movably connected to the machine body 101 through a transmission system 104, and the cardboard 2 is placed on the pressure plate 103 to drive the pressure plate 103 to move and cooperate with the platen 102 for creasing and cutting. The transmission system 104 installed on the machine body 101 drives the pressure plate 103 to move so that the pressure plate 103 is close to the platen 102 installed on the side of the machine body 101 for creasing and cutting. An angle sensor 105 is fixedly installed at the output end of the transmission system 104, and the angle sensor 105 senses the angle of rotation of the pressure plate 103 driven by the transmission system 104.

[0028] The limiting component 3, located inside one side of the machine body 1, includes a stop block 301 and a locking block 302, used to limit the bottom and sides of the cardboard 2; the limiting block 304, fixedly installed inside the locking block 302 via an elastic element 303, is used to press and limit the cardboard 2; the stop block 301 is fixed to the bottom surface of the pressure plate 103, and the locking block 302 is fixed to the bottom side of the pressure plate 103, used to limit the bottom of the cardboard 2 by the stop block, and the locking block 302 limits the sides of the cardboard 2. Gas impact causes the limiting block 304 to move downward and press against the edge of the cardboard 2 located inside the locking block 302, preventing pressure. The cutting process of cardboard 2 is active, further ensuring the quality of the cut cardboard 2. The inclined plate 305 is slidably connected to the inner top of the clamping block 302 at its top, and one end of its inclined surface is slidably engaged with the top inclined surface of the limiting block 304. The other end of its inclined plate is fixedly connected to a scraper 306, which is used to clean the inner top of the clamping block 302 in conjunction with the movement of the limiting block 304. The air nozzle 307 is opened in the inner top of the clamping block 302. The gas ejected from the air nozzle 307 pushes the limiting block 304 to press the cardboard 2. The scraper 306 cleans the air nozzle 307 to prevent the air nozzle 307 from being blocked during the suction process, further ensuring the ventilation effect.

[0029] Adjustment component 4, located inside the machine body 1, is used to adjust the position of cardboard 2, ensuring precise positioning during cardboard 2 pressing and cutting. Conveying device 401, slidably connected to the inside of pressure plate 103 on its side, has a pressure sensor 402 fixedly installed inside, used to convey and position cardboard 2 placed on the surface of pressure plate 103. Pressure sensor 402 senses whether cardboard 2 is under pressure and determines whether the die-cutting blade 702 and spring pad 703 are in contact with cardboard 2. Driving mechanism 403, fixedly installed on the side of conveying device 401, with its output end connected to the driving end of conveying device 401, is used to drive the operation of conveying device 401, ensuring that the side of cardboard 2 is in close contact with the inside of the clamping block 302, guaranteeing precise positioning of cardboard 2, resulting in better subsequent pressing and cutting effects, and further ensuring the precision of cardboard 2 pressing and cutting.

[0030] The exhaust assembly 5, located on one side of the adjusting assembly 4, includes a cylinder 501 and a piston 502, used for expelling and drawing in gas. After the cardboard 2 is pressed and fixed, the cylinder 501 exhausts gas and flattens the cardboard 2. The ventilation pipe 503 has its inlet end connected to the outlet end of the cylinder 501 and its outlet end connected to the inlet end of the air jet 307. The cylinder 501 is fixedly installed on the side of the conveying device 401, the outer surface of the piston 502 is slidably connected to the inside of the cylinder 501, and the inlet end of the piston 502 is rotatably connected to the drive mechanism 403. The output end of cylinder 501 is connected to the input end of ventilation pipe 503. It is used to transmit the gas generated inside cylinder 501 through ventilation pipe 503. Gas is sprayed before pressing to clean and dehumidify cardboard 2 and conveying device 401, remove debris mixed on the surface of cardboard 2, solve the problem of poor pressing quality caused by excessive humidity of cardboard 2, and also flatten cardboard 2 to eliminate air cushion effect. After pressing, air is sucked in to prevent cardboard 2 from sticking to spring pad 703 and being carried up, causing cardboard 2 to be misaligned, thereby affecting the pressing quality and processing efficiency of cardboard 2.

[0031] Compensation component 6, located below adjustment component 4, includes a support column 601 and a movable plug 602, used to support adjustment component 4 and compensate for wear. A vent valve 603 has its input end connected to a branch of the vent pipe 503 via a three-way valve. The bottom of the support column 601 is fixedly connected to the interior of the pressure plate 103, the side of the support column 601 is connected to the output end of the vent valve 603, the side of the movable plug 602 is slidably connected to the interior of the support column 601, and the top of the movable plug 602 is fixedly installed to the bottom of the conveying device 401, used to push the conveying device 401 upwards for wear compensation. Compressed gas entering the support column 601 pushes the movable plug 602 upwards, causing the movable plug 602 to drive the conveying device 401 upwards. The movement allows for distance compensation. A connecting frame 604 has one end fixedly connected to the movable end of the vent valve 603, and the other end fixedly connected to a locking block 606. The side of the locking block 606 is slidably connected to the side wall of the support column 601, and one end of the locking block 606 is tightly engaged with the side of the movable plug 602. This allows the movable end of the vent valve 603 to move, opening and driving the connecting frame 604 and the locking block 606 to move, thus releasing the locking block 606 from locking the movable plug 602. A push rod 605 is fixedly installed on the side of the support column 601, and its telescopic end is fixedly installed on the side of the connecting frame 604. The push rod 605 drives the vent valve 603 to open and the locking block 606 and connecting frame 604 to move rapidly. The compensation distance is adjusted by controlling the opening duration of the vent valve 603.

[0032] The die-cutting assembly 7 is fixedly connected to the other side of the machine body 1. It is used to cut the cardboard 2. After cutting, the cylinder 501 draws air to demold the cardboard 2 from the die-cutting assembly 7. The die-cutting assembly 7 is fixedly connected to the side of the plate table 102. The die-cutting assembly 7 includes a base plate 701, which is fixedly installed on the side of the plate table 102. The end of the base plate 701 away from the inclined plate 305 has an air vent. The air vent has a filter plate inside to facilitate the flow of gas between the die-cutting blade 702 and the spring pad 703. The die-cutting blade 702 and the spring pad 703 are fixedly installed on the side of the base plate 701 for cutting the cardboard 2. The ventilation hole 704 is opened inside the spring pad 703. The movable buckle 705 and the ejector pin 706 are slidably connected inside the ventilation hole 704. After cutting, the cardboard 2 is separated from the spring pad 703. The ejector pin 706 extends outward to push the cardboard 2 and the spring pad 703 to separate better, preventing the spring pad 703 from adhering to the cardboard 2, thereby avoiding machine downtime for adjustment.

[0033] The movable buckle 705 consists of three parts: a middle sliding plate and two side sliding plates on both sides. The middle sliding plate is fixedly connected to the ejector pin 706. The middle sliding plate and the two side sliding plates are wedge-shaped. The flowing gas pushes the side sliding plates to move left and right, which in turn pushes the middle sliding plate to move up and down. Under the left and right limit of the ejector pin 706, the middle sliding plate realizes the up and down movement of the ejector pin 706, so that the ejector pin 706 extends outward to push the cardboard 2 and the spring pad 703 to better separate, preventing the spring pad 703 from jamming. This enables continuous high-speed production, reduces downtime for adjustments, reduces physical pulling on the spring pad 703, extends its service life, and ensures better cutting effect.

[0034] In use, the operator places the cardboard 2 onto the surface of the pressure plate 103. Under its own weight, the cardboard 2 contacts the abutment 301 at the bottom of the pressure plate 103, thus limiting the bottom edge of the cardboard 2. Simultaneously, the motor in the drive mechanism 403 drives the grooved wheel device fixed at its output end to rotate. The grooved wheel device includes an intermittent motion mechanism consisting of an active dial with a cylindrical pin, the grooved wheel, and a frame. The motor drives the active dial to rotate one revolution, and the cylindrical pin on the active dial pushes the grooved wheel to partially rotate on the frame, thereby causing the grooved wheel to output power. This power is transmitted through the drive mechanism 403. The pulley assembly drives the conveyor 401 to run. The transmission belt in the conveyor 401 runs on the top of the mounting frame. The surface of the conveyor 401, which is flush with the surface of the pressure plate 103, conveys the cardboard 2 under the action of friction, so that the side of the cardboard 2 is in close contact with the inside of the clamping block 302. This allows the clamping block 302 to limit the side of the cardboard 2, thereby ensuring the accurate positioning of the cardboard 2. This prevents the cardboard 2 from partially rebounding under its own elasticity during placement, which would cause the side of the cardboard 2 to not contact the clamping block 302, resulting in poor subsequent cutting effect and improving the cutting accuracy of the cardboard 2.

[0035] When the Geneva wheel device fixed at the output end of the motor drive in the drive mechanism 403 rotates, the piston 502 fixed at the output end of the motor drives the piston to move. Since one end of the piston 502 is an eccentric wheel set, the eccentric wheel set is driven to rotate by the motor, so that the piston 502 reciprocates. When the other end of the piston 502 makes a reciprocating stroke in the cylinder 501, the Geneva wheel device drives the transmission device 401 to move partially. The piston 502 moves and compresses in the cylinder 501, so that the gas inside the cylinder 501 is transported through the ventilation pipe 503 to the jet port 307 on the top of the block 302 and compressed gas is ejected.

[0036] Gas impacts the limiting block 304 downwards inside the clamping block 302, causing the limiting block 304 to extend the elastic element 303. The limiting block 304 moves downwards and presses against the edge of the cardboard 2 inside the clamping block 302, thus stabilizing and fixing the cardboard 2 and preventing it from moving during the cutting process, which would result in poor quality of the cut cardboard 2. Since one end of the inclined plate 305 slides and engages with the top inclined plate of the limiting block 304, when the limiting block 304 moves downwards, the inclined plate 305, which is slidably connected to the inner top of the clamping block 302, moves under the action of the internal elastic structure, maintaining the engagement between the inclined plate 305 and the inclined plate 304. This allows the inclined plate 305 to drive the scraper 306 to scrape and clean the air jet 307 on the top of the clamping block 302.

[0037] The gas ejected downwards from the jet nozzle 307 inside the clamping block 302 is discharged to the side of the clamping block 302 after pushing the limiting block 304 to move. The compressed gas discharged from the side of the clamping block 302 can blow away paper dust and fine debris that adhere to the surface of the cardboard 2 during production, storage and transfer, preventing them from remaining on the surface of the cardboard 2 and affecting the subsequent die-cutting effect. It also prevents them from accumulating around the die-cutting blade 702 or on the spring pad 703 during the cutting process, thereby keeping the cardboard 2 clean, stabilizing the die-cutting quality, and extending the service life of the die-cutting blade 702 and the spring pad 703. Moreover, due to the material of the cardboard 2 itself, it is easy to absorb moisture and become damp. Wet cardboard 2 is more likely to stick to the die-cutting blade 702 and the spring pad 703, causing pulling and burrs. When the compressed gas passes through the surface of the cardboard 2, it performs a slight drying of the surface, removing excess moisture, thereby gently and instantly dehumidifying and drying the surface of the cardboard 2, promoting the subsequent die-cutting effect of the cardboard 2 to achieve the best quality under standard production conditions.

[0038] Meanwhile, during the process of conveying the cardboard 2 to make it contact the cardboard block 302 for positioning, the conveying device 401 may cause the cardboard 2 to bend when it moves. The bent cardboard 2 will affect the subsequent pressing and cutting process. At this time, the gas flowing through the surface of the cardboard 2 is opposite to the direction of movement of the cardboard 2 driven by the conveying device 401, and the end of the cardboard 2 is pressed and fixed by the bottom of the inclined plate 305. Therefore, the flowing gas generates a certain pressure on the top of the cardboard 2, so that the cardboard 2 returns to flatness and further promotes the subsequent pressing and cutting of the cardboard 2.

[0039] The conveying device 401 conveys the cardboard 2 under friction. After long-term use, the surface of the conveying device 401 will be worn. Since the cardboard 2 itself is relatively thin, the wear of the conveying device 401 will result in insufficient cutting depth during the cutting process. The transmission system 104 installed on the machine body 101 drives the pressure plate 103 to move so that the pressure plate 103 is close to the plate table 102 installed on the side of the machine body 101. This allows the die-cutting blade 702 and the spring pad 703 to contact and cut the cardboard 2 on the surface of the pressure plate 103. The angle sensor 105 senses the rotation angle of the pressure plate 103 driven by the transmission system 104. At the same time, the pressure sensor 402 senses whether the cardboard 2 is under pressure, that is, whether the die-cutting blade 702 and the spring pad 703 are in contact with the cardboard 2.

[0040] When the angle sensor 105 senses that the transmission system 104 drives the pressure plate 103 to rotate to a certain angle, under normal circumstances, the die-cutting blade 702 and the spring pad 703 are in contact with the cardboard 2. If the pressure sensor 402 senses that the pressure from the cardboard 2 has not reached the preset pressure value, it indicates that the conveying device 401 is worn, causing the cutting blade and the spring pad 703 to not be in contact with the cardboard 2. The push rod 605 drives the telescopic end to move the connecting frame 604 quickly, causing the connecting frame 604 to move the movable end of the air valve 603, thereby opening the air valve 603 so that the gas in the air pipe 503 can enter the support column 601 through its output end branch and the air valve 603. At the same time, the connecting frame 604 drives the locking block 606 to move outward in the side wall of the support column 601, thereby releasing the restriction of the locking block 606 on the movable plug 602. The compressed gas entering the support column 601 pushes the movable plug 602 upward, so that the movable plug 602 drives the conveying device 401 to move upward and perform distance compensation.

[0041] When the pressure sensor 402 senses that the pressure value from the cardboard 2 has reached the preset pressure value, the push rod 605 drives the telescopic end to quickly retract the connecting frame 604, causing the connecting frame 604 to retract the movable end of the air valve 603, thereby closing the air valve 603 and blocking gas from entering the support column 601. At the same time, the connecting frame 604 drives the locking block 606 to move and relock the movable plug 602, stopping the movable plug 602 and the conveying device 401 from moving. The movable plug 602 and the support column 601 support and fix the conveying device 401, thereby compensating for the distance difference caused by the wear of the conveying device 401, ensuring the cutting depth during the cutting process, and making the cutting effect of the cardboard 2 better.

[0042] The airflow actively discharged from the jet nozzle 307 can disperse and expel the air trapped between the die-cutting component 7 and the cardboard 2 in advance to prevent the formation of a high-pressure air cushion. The trapped air in a local area will act like a small air cushion, thereby offsetting part of the die-cutting pressure and causing incomplete die-cutting, burrs, or unclear indentations in that area. The air flow ensures that the pressure can be applied to the entire cardboard 2 instantaneously and evenly, avoiding incomplete die-cutting or unclear indentations caused by local air cushions. The pressure plate 103 is driven by the transmission system 104 to continuously approach the plate table 102 for continuous cutting. The rubber pads 703 on both sides of the die-cutting blade 702 are continuously compressed, causing the die-cutting blade 702 to continuously penetrate into the cardboard 2 for cutting. In high-speed continuous operation, the frequent friction between the die-cutting blade 702 and the cardboard 2 will generate heat. Continuous blowing, especially room temperature air, can play a certain cooling role and help stabilize the performance of the die-cutting blade 702 and the cardboard 2.

[0043] After the die-cutting blade 702 penetrates the cardboard 2 to a certain depth, the transmission system 104 drives the pressure plate 103 away from the plate table 102. Due to the vacuum adsorption effect, that is, the local vacuum formed between the die-cutting component 7 and the cardboard 2, static electricity, or the hooking of the cardboard 2 fibers, the cardboard 2 often sticks to the spring pad 703 and is lifted up. The function of the spring pad 703 is to use its elasticity to push the cardboard 2 away from the die-cutting blade 702 during separation, preventing the cardboard 2 from getting stuck on the die-cutting blade 702. However, the spring pad 703 itself also has a certain adsorption with the cardboard 2. At a specific angle, the airflow in the gap between the die-cutting component 7 and the cardboard 2 can break the vacuum state, form an air cushion layer, and push the cardboard 2 back to the bottom plate below.

[0044] As the die-cutting blade 702 and the cardboard 2 gradually approach each other for cutting, the piston 502 sprays air into the cylinder 501. As the die-cutting blade 702 and the cardboard 2 gradually separate, the piston 502 performs a return stroke in the cylinder 501, causing external gas to be drawn back through the air vent 307 and the ventilation pipe 503. The external gas also passes through the ventilation hole 704 in the spring pad 703. The height of the ventilation hole 704 is greater than the height of the moving buckle 705 to facilitate gas flow and cool the die-cutting blade 702. The drawn-back gas pushes the side slide plate towards the inclined plate 305, which in turn pushes the middle slide plate downward. The moving buckle 705 moves downward under the left and right limit of the ejector pin 706, causing the ejector pin 706 to extend outward and push the cardboard 2 to separate better from the spring pad 703. This prevents the spring pad 703 from adhering to the cardboard 2 and causing paper jams, thereby achieving continuous high-speed production, reducing downtime for adjustments, reducing physical pulling on the spring pad 703, extending its service life, and ensuring better cutting results.

[0045] During the second blowing process, the gas can pass through the ventilation hole 704. The gas pushes the moving buckle 705 to move, causing the ejector pin 706 to return upward. At the same time as the pressure plate 103 changes direction and returns, the blowing is controlled to change to exhaust. The change in airflow can prevent the debris cut by continuous blowing from accumulating near the spring pad 703, which would block the through hole of the spring pad 703 and affect subsequent performance. At the same time, the ejector pin 706 retracts into the ventilation hole 704 to prevent the spring pad 703 from causing obstruction when it is elastically squeezed with the cardboard 2. Since the suction process can easily block the filter screen at the air jet 307, the scraper 306 cleans the air jet 307 to further ensure the ventilation effect.

[0046] The transmission system 104 drives the pressure plate 103 to gradually separate from the plate table 102. The operator takes out the cut cardboard 2 and puts in a new cardboard 2. The machine body 1 repeats the above operation to ensure the efficiency of continuous cutting of the cardboard 2. At the same time, the impurities generated during the cutting of the cardboard 2 are filtered by the filter plate inside the air vent and finally recycled along the recycling bin below the plate table 102.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flatbed creasing and cutting machine, comprising a machine body and cardboard placed inside, the machine body comprising: The machine body has a printing plate fixedly connected to its side; a pressure plate is movably connected to the machine body via a transmission system, and the cardboard is placed above the pressure plate. The transmission system drives the pressure plate to move and cooperate with the printing plate for cutting. An angle sensor is fixedly installed at the output end of the transmission system. The machine body is characterized by further comprising: The limiting component, located inside the machine body on one side, includes a stop block and a locking block, used to limit the bottom and sides of the cardboard; the limiting block, which is fixedly installed inside the locking block by an elastic element, is used to press and limit the cardboard; the air jet is opened on the inner top of the locking block, and the gas ejected from the air jet is used to push the limiting block to press the cardboard. An adjustment component, located inside the machine body, is used to adjust the position of the cardboard. The adjustment component includes a conveying device, the side of which is slidably connected to the inside of the pressure plate, and a pressure sensor is fixedly installed inside the device for conveying and positioning the cardboard placed on the surface of the pressure plate. An exhaust assembly, located on one side of the adjustment assembly, includes a cylinder and a piston, used to expel and draw in gas, and the cylinder exhausts gas after the cardboard is pressed and fixed, making the cardboard flat; a ventilation pipe, the inlet of which is connected to the outlet of the cylinder, and the outlet of which is connected to the inlet of the air jet. A compensation component, located below the adjustment component, includes a support column and a movable plug, used to support the adjustment component and compensate for wear. A vent valve has its input end connected to a branch of the vent pipe output end via a three-way valve. The bottom of the support column is fixedly connected to the interior of the pressure plate, the side of the support column is connected to the output end of the vent valve, the side of the movable plug is slidably connected to the interior of the support column, and the top of the movable plug is fixedly installed to the bottom of the conveying device, used to push the conveying device upwards for wear compensation. A connecting frame has one end fixedly connected to the movable end of the vent valve, and the other end fixedly connected to a locking block. The side of the locking block is slidably connected to the side wall of the support column, and one end of the locking block is tightly fitted to the side of the movable plug. A push rod is fixedly installed on the side of the support column, and its telescopic end is fixedly installed on the side of the connecting frame. The push rod drives the telescopic end to move the connecting frame and the locking block, and moves the movable end of the vent valve to open, thereby releasing the locking block from locking the movable plug. The die-cutting assembly is fixedly connected to the other side inside the machine body. It is used to cut the cardboard, and after the cutting is completed, the cylinder extracts air to demold the cardboard from the die-cutting assembly. The gas inside the cylinder is transported through the ventilation pipe to the jet nozzle at the top of the card block and compressed gas is ejected. The gas impacts the limiting block downward inside the card block, causing the limiting block to extend the elastic element. The limiting block moves downward and presses the edge of the cardboard inside the card block. The gas ejected downward inside the card block pushes the limiting block to move and is discharged to the side of the card block. The compressed gas discharged from the side of the card block blows away paper dust and small debris that adhere to the surface of the cardboard during production, storage and transfer. The angle sensor detects that the transmission system drives the pressure plate to rotate to a certain angle. If the pressure sensor detects that the pressure from the cardboard has not reached the preset pressure value, it indicates that the conveying device is worn, causing the die-cutting component to not contact the cardboard. The push rod drives the telescopic end to move the connecting frame, which in turn moves the movable end of the vent valve. The vent valve opens, allowing the gas in the vent pipe to branch out through its output end and enter the support column through the vent valve. At the same time, the connecting frame drives the locking block to move outward in the side wall of the support column, releasing the locking block's restriction on the movable plug. The compressed gas entering the support column pushes the movable plug upward, causing the movable plug to move the conveying device upward and perform distance compensation.

2. The flatbed creasing and tangling machine according to claim 1, characterized in that, The abutment block is fixed to the bottom surface of the pressure plate, and the locking block is fixed to the bottom side of the pressure plate. The abutment block limits the bottom of the cardboard, and the locking block limits the side of the cardboard.

3. The flatbed creasing and tangling machine according to claim 2, characterized in that, The limiting component also includes: The inclined plate has its top slidably connected to the inner top of the card block, one end of its inclined surface slidably engages with the top inclined surface of the limiting block, and the other end is fixedly connected to a scraper, which is used to clean the inner top of the card block in conjunction with the movement of the limiting block.

4. The flatbed creasing and tangling machine according to claim 1, characterized in that, The adjustment component further includes a drive mechanism, which is fixedly installed on the side of the conveying device, and the output end of the drive mechanism is connected to the drive end of the conveying device for driving the operation of the conveying device.

5. The flatbed creasing and tangling machine according to claim 4, characterized in that, The cylinder is fixedly installed on the side of the conveying device. The outer surface of the piston is slidably connected to the inside of the cylinder. The input end of the piston is rotatably connected to the drive mechanism, and the gas generated inside the cylinder is transmitted through the air pipe.

6. The flatbed creasing and tangling machine according to claim 1, characterized in that, The die-cutting assembly includes: A substrate is fixedly mounted on the side of the printing plate. A die-cutting blade and a spring pad are fixedly mounted on the side of the substrate for pressing and cutting the cardboard. Ventilation holes are located inside the spring pad, and sliding fasteners and pins are slidably connected inside to separate the cardboard from the spring pad after pressing and cutting.

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