High-precision flat die cutting machine

Abstract

The application relates to the technical field of die-cutting machines, in particular to a high-precision flat die-cutting machine, which comprises a base and a die-cutting hydraulic cylinder fixedly installed on the top of the base, a die-pressing plate is connected to the die-cuting hydraulic cylinder, a die-cutting plate is fixedly connected to the top of the base, a humidifying assembly and a light transmission detection module are fixedly installed on the top of the base, the light transmission detection module and the humidifying assembly are electrically connected to each other, the light transmission detection module and the humidifying assembly are arranged near the die-cutting plate, alcohol can be sprayed on paper according to the light transmission information of the paper after the paper is burst, and the spraying time and the spraying speed of the alcohol are automatically adjusted according to different light transmission information, so that good alcohol penetration effect is realized, the toughness of the paper is effectively improved, and the probability of paper bursting is reduced.

Description

Technical Field

[0001] This invention relates to the field of die-cutting machine technology, and more specifically to a high-precision flatbed die-cutting machine. Background Technology

[0002] The platen and cutting mechanism of a flatbed die-cutting machine are both flat. When the planes of the platen and the pressure plate are in a vertical position, it is a vertical flatbed die-cutting machine.

[0003] When die-cutting paper, the main process is to press out printing or cutting lines. During the die-cutting process, if the paper is too dry or the local pressure of the die-cutting is deviated, the paper will experience a bursting phenomenon, that is, the paper fibers near the die-cutting area break, forming a completely transparent area, resulting in the paper being unqualified. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-precision flatbed die-cutting machine, which can effectively solve the problem of easy bursting of lines when cutting paper in the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a high-precision flatbed die-cutting machine, including a base and a die-cutting hydraulic cylinder fixedly installed on the top of the base. A die-cutting plate is connected to the die-cutting hydraulic cylinder. A die-cutting plate is fixedly connected to the top of the base. A humidification component and a light transmission detection module are fixedly installed on the top of the base. The light transmission detection module and the humidification component are electrically connected to each other.

[0007] The humidification component includes a receiving box and an alcohol storage box embedded and fixedly installed in the base. The bottoms of the alcohol storage box and the receiving box are connected to each other through a through groove. An electric push rod is fixedly connected to the top inner wall of the receiving box. A piston plate is fixedly connected to the output end of the electric push rod. The piston plate is slidably installed in the receiving box and divides the receiving box into a negative pressure section and a liquid pressing section. A spray block and a paper suction block are fixedly connected to the top of the receiving box. The paper suction block and the top of the receiving box share a negative pressure transmission groove. A connecting square tube is installed through the top plate of the receiving box. A spray groove corresponding to the port of the connecting square tube is opened in the spray block. The connecting square tube is inserted through the piston plate and its bottom end extends to the bottom of the receiving box.

[0008] Furthermore, the spraying groove includes a first spraying groove, a second spraying groove, and a coating groove, with the coating groove located in the middle of the first and second spraying grooves. Both the first and second spraying grooves are inclined toward the die-cutting plate.

[0009] Furthermore, a mounting frame is fixedly installed on the outside of the paper suction block, and multiple ball bearings are fixedly installed on the bottom wall of the mounting frame corresponding to the position of the paper suction block.

[0010] Furthermore, a rotating shaft is horizontally rotatably connected inside the application tank, and connecting boxes are uniformly fixedly connected to the rotating shaft. An elastic bladder is fixedly installed inside the connecting box. The elastic bladder and the side wall of the connecting box are provided with a washing liquid hole. An outlet hole is provided at the end of the elastic bladder. A sponge strip is fixedly connected to the end of the elastic bladder. One side of the application tank is narrowed inward to squeeze the elastic bladder. A one-way valve is installed in both the washing liquid hole and the outlet hole.

[0011] Furthermore, an elastic box is installed through the side plate of the connecting square tube, a fixed magnetic frame is fixedly installed at the top end of the connecting square tube, a baffle is fixedly installed horizontally inside the connecting square tube, a movable magnetic frame is slidably installed inside the connecting square tube, the movable magnetic frame is used to block the baffle, and a spring is fixedly connected between the movable magnetic frame and the fixed magnetic frame.

[0012] Furthermore, two miniature push rods are embedded and fixedly installed in the spray block. The output ends of the two miniature push rods are rotatably connected to flow limiting plates. The two flow limiting plates are respectively rotatably installed on the side walls of the first spray slot and the second spray slot.

[0013] Furthermore, the light transmittance detection module includes a mounting base corresponding to each of the receiving boxes. Multiple light transmittance detection probes are fixedly connected to the top of the mounting base, and light transmittance detection receivers corresponding to each of the light transmittance detection probes are fixedly connected to the bottom of the top plate of the mounting base. The light transmittance detection probes in the same group are electrically connected to electric push rods and micro push rods corresponding to their positions. The light transmittance detection probes control the alcohol storage box and the micro push rods according to the light transmittance detection results and the control method.

[0014] Furthermore, the control method includes the following steps:

[0015] S1. Preset the transmittance qualification threshold, collect the transmittance information of the paper passing above the transmittance detection probe and determine whether the transmittance is qualified;

[0016] S2. Collect the time it takes for the non-compliant light transmittance information to pass above the same group of light transmittance detection probes to obtain the length of the non-compliant light transmittance area. Collect the time it takes for the non-compliant light transmittance information to pass above different groups of light transmittance detection probes to obtain the width of the non-compliant light transmittance area.

[0017] S3. Based on the light transmittance information, control the downward speed of the electric push rod, control the movement of the micro push rod, reduce the diameter of the first and second spray channels, and increase the spraying intensity.

[0018] S31. Based on the width of the opaque area, control the electric push rod at the corresponding position to press down, increasing the spray quantity;

[0019] S32. Control the downward pressing time of the electric push rod according to the length of the opaque area to increase the spraying length.

[0020] The technical solution provided by this invention has the following advantages compared with known public technologies:

[0021] This invention, by setting a light transmittance detection module and a humidification component near the die-cutting plate, can spray alcohol onto the paper based on the light transmittance information after the paper bursts. Furthermore, it automatically adjusts the time and speed of alcohol spraying according to different light transmittance information, achieving a good alcohol penetration effect, effectively improving the paper's toughness, and reducing the probability of paper bursting. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a partial cross-sectional view of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of the container and spray block of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle;

[0028] Figure 6 This is a schematic diagram of the structure at the rotating shaft of the present invention;

[0029] Figure 7 This is a schematic cross-sectional view of the container structure of the present invention;

[0030] Figure 8 For the present invention Figure 7 Enlarged view at point C;

[0031] Figure 9 This is a schematic diagram of the mounting base structure of the present invention;

[0032] Figure 10 This is a flowchart of the control method of the present invention.

[0033] The labels in the diagram represent: 1. Base; 2. Die-cutting hydraulic cylinder; 3. Die-cutting plate; 401. Receiving box; 402. Alcohol storage box; 403. Electric push rod; 404. Piston plate; 405. Connecting square tube; 406. Spray block; 407. Spray trough; 4071. First spray trough; 4072. Second spray trough; 4073. Coating trough; 408. Paper suction block; 409. Negative pressure transmission trough; 410. Rotating shaft; 411. 412. Connecting box; 413. Elastic bladder; 414. Washing fluid hole; 415. Discharge hole; 416. Sponge strip; 417. Elastic box; 418. Fixed magnetic frame; 419. Movable magnetic frame; 420. Baffle; 421. Spring; 422. Miniature push rod; 423. Flow limiting plate; 5. Light transmittance detection module; 501. Light transmittance detection probe; 502. Light transmittance detection receiver; 503. Mounting base; 6. Mounting bracket; 7. Ball bearing. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to embodiments.

[0036] Example:

[0037] A high-precision flatbed die-cutting machine includes a base 1 and a die-cutting hydraulic cylinder 2 fixedly installed on the top of the base 1. A die-cutting plate is connected to the die-cutting hydraulic cylinder 2. A die-cutting plate 3 is fixedly connected to the top of the base 1. A humidification component and a light transmission detection module 5 are fixedly installed on the top of the base 1. The light transmission detection module 5 and the humidification component are electrically connected to each other.

[0038] The humidification component includes a receiving box 401 and an alcohol storage box 402 embedded and fixedly installed in the base 1. The bottoms of the alcohol storage box 402 and the receiving box 401 are connected to each other through a through groove. An electric push rod 403 is fixedly connected to the inner top wall of the receiving box 401. A piston plate 404 is fixedly connected to the output end of the electric push rod 403. The piston plate 404 is slidably installed in the receiving box 401, and the piston plate 404 divides the receiving box 401 into negative pressure zones. The container 401 is divided into a liquid-pressing section and a liquid-pressing section. A spray block 406 and a paper-absorbing block 408 are fixedly connected to the top of the container 401. The paper-absorbing block 408 and the top of the container 401 are provided with a negative pressure transmission groove 409. A connecting square tube 405 is installed through the top plate of the container 401. A spray groove 407 corresponding to the port of the connecting square tube 405 is opened in the spray block 406. The connecting square tube 405 is inserted through the piston plate 404 and its bottom end extends to the bottom of the container 401.

[0039] The paper is fed by a paper feeding assembly using existing technology, which has a high degree of automation and is a mature existing technology (not shown in the figure). The arrow in base 1 indicates the paper feeding direction. The paper passing through the die-cutting plate 3 is subjected to light transmittance detection by the light transmittance detection module 5. When the paper shows a cracking phenomenon, the light transmittance detected by the light transmittance detection module 5 will increase significantly. At this time, the alcohol storage box 402 at the detected light transmittance failure position can be controlled to move, driving the piston plate 404 to move downward, squeezing the alcohol in the pressure part of the container 401 through the connecting square tube 405 into the spraying groove 407. The alcohol is sprayed onto the paper through the spraying groove 407, which wets the corresponding part of the paper, increases the toughness of the corresponding part of the paper, and helps to prevent the paper from cracking during die-cutting, thus reducing the occurrence of paper cracking.

[0040] Paper is primarily composed of plant fibers and auxiliary materials. The former is mainly cellulose, which, upon further analysis of its microscopic composition, is a large polysaccharide composed of glucose molecules. Based on the basic functional groups of glucose, this macromolecular structure is filled with numerous hydrogen bonds, ensuring that the macromolecules are tightly entangled together, thus forming the paper we see on a macroscopic scale. When absorbing water, water molecules insert themselves into these molecules, replacing some of the hydrogen bonds, essentially acting as a lubricant or bulking agent within the macromolecular structure. The cellulose macromolecules untangle and slide. When the water is removed again, for example, by evaporation, the slid cellulose macromolecules reform hydrogen bonds, but this time in new positions, thus appearing as wrinkles on a macroscopic scale. Alcohol, unlike water, is generally neutral and cannot replace existing hydrogen bonds. Therefore, when absorbing alcohol, most of the original hydrogen bonds are preserved, and the paper will basically return to its original state after the alcohol is removed. From the perspective of surface tension, the surface tension of ethanol is 72 mN / m, while that of water is 21.5 mN / m. The deformation of paper after encountering alcohol under the surface tension of alcohol is negligible. Therefore, spraying alcohol is used instead of water here.

[0041] Specifically, refer to Figures 1 to 9 The spraying groove 407 includes a first spraying groove 4071, a second spraying groove 4072 and a coating groove 4073. The coating groove 4073 is located in the middle of the first spraying groove 4071 and the second spraying groove 4072. The first spraying groove 4071 and the second spraying groove 4072 are both inclined towards the die-cutting plate 3.

[0042] Specifically, refer to Figures 1 to 9 The paper suction block 408 is fixedly mounted on the outside of a mounting frame 6, and a plurality of ball bearings 7 are fixedly mounted on the bottom wall of the mounting frame 6 corresponding to the position of the paper suction block 408.

[0043] As the paper passes over the suction block 408, the downward movement of the piston plate 404 causes a negative pressure to be generated in the negative pressure section of the receiving box 401. The paper passing over the surface of the suction block 408 covers the negative pressure transmission groove 409, and the negative pressure pulls the paper down to the top of the suction block 408, reducing the movement of the paper and helping the sprayed alcohol to penetrate the paper well, thus improving the alcohol penetration effect.

[0044] Specifically, refer to Figures 1 to 9A rotating shaft 410 is horizontally rotatably connected inside the application groove 4073. A connecting box 411 is uniformly fixedly connected to the rotating shaft 410. An elastic bladder 412 is fixedly installed inside the connecting box 411. The elastic bladder 412 and the side wall of the connecting box 411 are provided with a washing liquid hole 413. An outlet hole 414 is provided at the end of the elastic bladder 412. A sponge strip 415 is fixedly connected to the end of the elastic bladder 412. One side of the application groove 4073 is narrowed inward to squeeze the elastic bladder 412. A one-way valve is installed in both the washing liquid hole 413 and the outlet hole 414.

[0045] When alcohol flows in the spray tank 407, it is sprayed outward along the first spray tank 4071 and the second spray tank 4072, and also enters the coating tank 4073. This generates a driving force on the connecting box 411 and the elastic bladder 412 in the coating tank 4073, driving the rotating shaft 410 to rotate within the coating tank 4073. During the rotation, the sponge strip 415 absorbs the alcohol in the coating tank 4073 and applies this portion of the alcohol to the bottom of the paper. The moving paper also generates tangential friction on the sponge strip 415, driving the elastic bladder 412 to rotate. In this way, the alcohol spraying process on the paper is divided into direct spraying and coating, allowing the alcohol to penetrate the paper well and ensuring that the alcohol effectively improves the paper's toughness.

[0046] When the sponge strip 415 comes into contact with the paper, the paper is held in place by the negative pressure transmission groove 409 and pressed down by the ball bearing 7. The paper exerts a certain downward pressure on the elastic bladder 412, causing the alcohol in the elastic bladder 412 to be squeezed through the liquid outlet 414 onto the sponge strip 415. This fills the sponge strip 415 with alcohol and allows it to be well applied to the paper, helping the alcohol to penetrate the paper better.

[0047] Specifically, refer to Figures 1 to 9 An elastic box 416 is installed through the side plate of the connecting square tube 405. A fixed magnetic frame 417 is fixedly installed at the top end of the connecting square tube 405. A baffle 419 is fixedly installed horizontally inside the connecting square tube 405. A movable magnetic frame 418 is slidably installed inside the connecting square tube 405. The movable magnetic frame 418 is used to block the baffle 419. A spring 420 is fixedly connected between the movable magnetic frame 418 and the fixed magnetic frame 417.

[0048] When alcohol passes through the connecting square tube 405, it first enters the elastic box 416, causing the elastic box 416 to deform. Because the movable magnetic frame 418 and the baffle 419 block the opening of the connecting square tube 405, the elastic box 416 will continue to deform. When the deformation of the elastic box 416 reaches a certain extent, the spring 420 will be opened, and a magnetic attraction will be generated between the movable magnetic frame 418 and the fixed magnetic frame 417. After the opening of the connecting square tube 405 is opened, the alcohol will be continuously sprayed into the spraying groove 407 under the pressure of the elastic box 416 and the pressure transmission of the piston plate 404. This will cause the alcohol spraying and the generation of the suction force of the negative pressure transmission groove 409 to be staggered in time, ensuring that the paper is attracted by the negative pressure in the negative pressure transmission groove 409 before the alcohol is sprayed, preventing the paper from being lifted and moved due to the spraying before the negative pressure has attracted the paper.

[0049] Specifically, refer to Figures 1 to 9 The spray block 406 has two miniature push rods 421 embedded and fixedly installed inside. The output ends of the two miniature push rods 421 are rotatably connected to flow limiting plates 422. The two flow limiting plates 422 are respectively rotatably installed on the side walls of the first spray groove 4071 and the second spray groove 4072.

[0050] Specifically, refer to Figures 1 to 9 The light transmittance detection module 5 includes a mounting base 503 corresponding to the receiving box 401. A plurality of light transmittance detection probes 501 are fixedly connected to the top of the mounting base 503. A light transmittance detection receiver 502 corresponding to the light transmittance detection probe 501 is fixedly connected to the bottom of the top plate of the mounting base 503. The light transmittance detection probes 501 in the same group are electrically connected to the electric push rod 403 and the miniature push rod 421 corresponding to their positions. The light transmittance detection probes 501 control the alcohol storage box 402 and the miniature push rod 421 according to the light transmittance detection results and the control method.

[0051] By detecting the light transmittance, the speed and duration of the descent of the electric push rod 403 are controlled, thereby controlling the speed and duration of alcohol spraying. The spraying time allows control over the area to be sprayed. The speed of alcohol spraying is based on the light transmittance, i.e., the degree of paper tearing. The deeper the tearing, the stronger the light transmittance, and the faster the alcohol should be sprayed to achieve better penetration and more effectively improve the paper's toughness. When it is necessary to control the alcohol spraying speed, the micro push rod 421 will also move, pushing the flow limiting plate 422 to rotate, thereby reducing the diameter of the first spray groove 4071 and the second spray groove 4072 and increasing the alcohol spraying speed.

[0052] Specifically, refer to Figure 10 The control method includes the following steps:

[0053] S1. Preset the transmittance qualification threshold, collect the transmittance information of the paper above the transmittance detection probe 501 and determine whether the transmittance is qualified.

[0054] S2. Collect the time it takes for the unqualified light transmittance information to pass above the same group of light transmittance detection probes 501 to obtain the length of the unqualified light transmittance area. Collect the time it takes for the unqualified light transmittance information to pass above the light transmittance detection probes 501 of different groups to obtain the width of the unqualified light transmittance area.

[0055] S3. Based on the light transmittance information, control the downward speed of the electric push rod 403, control the action of the micro push rod 421, reduce the diameter of the first spray channel 4071 and the second spray channel 4072, and increase the spraying intensity.

[0056] S31. Based on the width of the opaque area, control the electric push rod 403 at the corresponding position to press down, increasing the spray quantity;

[0057] S32. Based on the length of the opaque area, control the pressing time of the electric push rod 403 to increase the spraying length.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-precision flatbed die-cutting machine, comprising a base (1) and a die-cutting hydraulic cylinder (2) fixedly mounted on the top of the base (1), wherein a die-cutting plate is connected to the die-cutting hydraulic cylinder (2), and a die-cutting plate (3) is fixedly connected to the top of the base (1), characterized in that, The humidification component and the light transmission detection module (5) are fixedly installed on the top of the base (1), and the light transmission detection module (5) and the humidification component are electrically connected to each other. The humidification component includes a receiving box (401) and an alcohol storage box (402) embedded and fixedly installed in the base (1). The bottoms of the alcohol storage box (402) and the receiving box (401) are connected to each other through a through groove. An electric push rod (403) is fixedly connected to the inner wall of the top of the receiving box (401). A piston plate (404) is fixedly connected to the output end of the electric push rod (403). The piston plate (404) is slidably installed in the receiving box (401) and divides the receiving box (401) into a negative pressure section. The container (401) is fixedly connected to a spray block (406) and a paper suction block (408) at the top. The paper suction block (408) and the container (401) are provided with a negative pressure transmission groove (409) at the top. A connecting square tube (405) is installed through the top plate of the container (401). A spray groove (407) corresponding to the port of the connecting square tube (405) is opened in the spray block (406). The connecting square tube (405) is inserted through the piston plate (404) and its bottom end extends to the bottom of the container (401). The spraying tank (407) includes a first spraying tank (4071), a second spraying tank (4072), and a coating tank (4073). A rotating shaft (410) is horizontally rotatably connected inside the coating tank (4073). A connecting box (411) is uniformly fixedly connected to the rotating shaft (410). An elastic bladder (412) is fixedly installed inside the connecting box (411). The side wall of the elastic bladder (412) and the connecting box (411) are provided with a washing liquid hole (413). An outlet hole (414) is provided at the end of the elastic bladder (412). A sponge strip (415) is fixedly connected to the end of the elastic bladder (412). One side of the coating tank (4073) is narrowed inward to squeeze the elastic bladder (412). A one-way valve is installed in both the washing liquid hole (413) and the outlet hole (414). An elastic box (416) is installed through the side plate of the connecting square tube (405). A fixed magnetic frame (417) is fixedly installed at the top port of the connecting square tube (405). A baffle (419) is fixedly installed horizontally inside the connecting square tube (405). A movable magnetic frame (418) is slidably installed inside the connecting square tube (405). The movable magnetic frame (418) is used to block the baffle (419). A spring (420) is fixedly connected between the movable magnetic frame (418) and the fixed magnetic frame (417). The spray block (406) has two miniature push rods (421) embedded and fixedly installed. The output ends of the two miniature push rods (421) are rotatably connected to flow limiting plates (422). The two flow limiting plates (422) are respectively rotatably installed on the side walls of the first spray groove (4071) and the second spray groove (4072).

2. The high-precision flatbed die-cutting machine according to claim 1, characterized in that, The coating groove (4073) is located in the middle of the first spray groove (4071) and the second spray groove (4072), and both the first spray groove (4071) and the second spray groove (4072) are inclined toward the die-cutting plate (3).

3. The high-precision flatbed die-cutting machine according to claim 2, characterized in that, The paper suction block (408) is fixedly mounted with a mounting frame (6), and multiple ball bearings (7) are fixedly mounted on the bottom wall of the mounting frame (6) corresponding to the position of the paper suction block (408).

4. The high-precision flatbed die-cutting machine according to claim 3, characterized in that, The light transmittance detection module (5) includes a mounting base (503) corresponding to the receiving box (401). Multiple light transmittance detection probes (501) are fixedly connected to the top of the mounting base (503). Light transmittance detection receivers (502) corresponding to the light transmittance detection probes (501) are fixedly connected to the bottom of the top plate of the mounting base (503). The light transmittance detection probes (501) in the same group are electrically connected to the electric push rod (403) and the miniature push rod (421) corresponding to their positions. The light transmittance detection probes (501) control the alcohol storage box (402) and the miniature push rod (421) according to the light transmittance detection results and the control method.

5. The high-precision flatbed die-cutting machine according to claim 4, characterized in that, The control method includes the following steps: S1. Set the transmittance qualification threshold, collect the transmittance information of the paper passing through the transmittance detection probe (501) and determine whether the transmittance is qualified; S2. Collect the time it takes for the unqualified light transmittance information to pass above the same group of light transmittance detection probes (501) to obtain the length of the unqualified light transmittance area. Collect the time it takes for the unqualified light transmittance information to pass above different groups of light transmittance detection probes (501) to obtain the width of the unqualified light transmittance area. S3. Based on the light transmittance information, control the downward speed of the electric push rod (403), control the action of the micro push rod (421), reduce the diameter of the first spray groove (4071) and the second spray groove (4072), and increase the spraying intensity; S31. Based on the width of the opaque area, control the electric push rod (403) at the corresponding position to press down, increasing the spray quantity; S32. Based on the length of the opaque area, control the pressing time of the electric push rod (403) to increase the spraying length.

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