A paper spacing adjustment device for a flexographic printing press

Abstract

The application discloses a paper spacing adjusting device for a flexible printing machine, relates to the field of flexible printing machines, and comprises a printing machine conveying frame, a conveying belt is installed on the printing machine conveying frame, the surface of the conveying belt is uniformly covered with multiple groups of corrugated paperboards, a paper spacing adjusting mechanism is installed on the top of the printing machine conveying frame, a dust removal and dust collection integrated mechanism is installed on one side of the paper spacing adjusting mechanism, a positioning seat is arranged on the paper spacing adjusting mechanism, the positioning seat is fixedly connected through screwing on the side wall of the printing machine conveying frame, an installation table is fixedly arranged on the upper portion of the positioning seat, and an installation plate is installed on the top of the installation table. The paper spacing adjusting device for the flexible printing machine can conveniently adapt to the change of various corrugated paperboard specifications by adjusting the spacing of the corrugated paperboards, does not need to replace the conveying belt or carry out complicated equipment adjustment, and improves the compatibility of the printing machine to different corrugated paperboards; and the printing machine can be used for printing work of paper sheets with different sizes.

Description

Technical Field

[0001] The invention relates to the field of flexible printing presses, in particular to a paper spacing adjustment device used for a flexible printing press. Background Art

[0002] Flexographic printing presses use a flexible printing plate and transfer ink via an anilox roller. This is a type of relief printing process. During printing, the anilox roller evenly applies a certain thickness of ink layer to the image and text portion of the printing plate. Then, under the pressure of the impression roller, the ink layer of the image and text portion is transferred to the surface of the substrate, forming a clear image and text. During the printing process, the anilox roller and the printing plate surface of the flexographic printing press will be contaminated with a large amount of ink. The equipment is seriously contaminated and needs to be cleaned regularly. The current treatment method is generally to remove the anilox roller and the printing plate from the printing press and then remove the surface ink by rinsing with clean water. However, this cleaning efficiency is low and it consumes a large amount of clean water, which is not conducive to environmental protection and energy saving.

[0003] To address the above-mentioned issues, a search revealed a Chinese patent application with publication number CN219806575U, which discloses a flexible printing press with a self-cleaning function. The press comprises a base plate, upright frames symmetrically mounted on the upper end of the base plate, an anilox roller and a printing platform mounted between the upright frames, and an integrated pedestal disposed behind the anilox roller and the printing platform. The press is characterized in that the printing platform is disposed below the anilox roller, a vertical oil cylinder is mounted on the rear end of the upper end of the base plate, the integrated pedestal is mounted on the output shaft at the upper end of the vertical oil cylinder, a water collecting trough is disposed in the middle of the upper end of the base plate, and a water supply pipe is connected between the upper end of the base plate and the integrated pedestal.

[0004] Although the above-mentioned device can recycle the sprayed water flow through the interception of the cleaning water flow by the printing table and the water collection tank on the bottom plate, thereby increasing the reuse rate and improving the energy-saving performance of the equipment, in actual use, when the flexible printing machine prints on different papers, the paper spacing cannot be adjusted. When changing to different sizes of paper, it is necessary to stop the machine to adjust the conveyor belt or paper feeding parameters, which increases the order change time; it is not compatible with different sizes of paper for printing. Summary of the Invention

[0005] The object of the present invention is to provide a paper spacing adjustment device for a flexible printing press to solve the defects mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, a paper spacing adjustment device for a flexible printing press is provided, comprising a printing press conveyor frame, a conveyor belt is installed on the printing press conveyor frame, the surface of the conveyor belt is evenly covered with multiple groups of corrugated cardboards, a paper spacing adjustment mechanism is installed on the top of the printing press conveyor frame, a dust removal and suction integrated mechanism is installed on one side of the paper spacing adjustment mechanism, a positioning seat is provided on the paper spacing adjustment mechanism, the positioning seat is screwed and fixed on the side wall of the printing press conveyor frame, a mounting platform is fixedly provided on the upper part of the positioning seat, a mounting plate is installed on the top of the mounting platform, a drive plate is movably installed on the upper surface of the mounting plate, a servo electric cylinder is installed on the upper middle side of the drive plate, and the output shaft of the servo electric cylinder is fixedly connected to the drive plate.

[0007] Furthermore, the paper spacing adjustment mechanism includes a correction platform, a connecting arm, an infrared transmitter, an infrared receiver, an adjustment hole, a stud, a positioning seat, a mounting platform, a transmission arm, a lower pressure seat, a silicone pad, a mounting plate, a guide column, a drive plate, a gantry and a servo electric cylinder. The servo electric cylinder is screwed and fixed to the middle of the gantry, and both sides of the bottom of the gantry are fixedly connected to the mounting plate.

[0008] Furthermore, guide holes are provided on both sides of the surface of the mounting plate, and transmission arms are inserted into the two groups of guide holes. The two groups of transmission arms are respectively fixedly connected to the two sides of the bottom of the driving plate. Guide columns are inserted on both sides of the surface of the driving plate, the top of the guide column is fixedly connected to the gantry, and the bottom of the guide column is fixedly connected to the mounting plate.

[0009] Furthermore, a lower pressure seat is installed at the bottom of both sets of transmission arms. The lower pressure seat is an arc-shaped structure made of plastic material. Silicone pads are bonded and fixed to the bottom of both sets of lower pressure seats. The two sets of lower pressure seats are respectively arranged on both sides of the surface of the corrugated cardboard; the two sets of lower pressure seats are driven to rise and fall synchronously by the servo electric cylinder and the drive plate.

[0010] Furthermore, the mounting platform is an "L"-shaped structure made of metal material. The mounting platform is fixedly installed on the printing press conveyor frame through a positioning seat. Two groups of adjustment holes are opened on the side wall of the mounting platform. Studs are inserted into the interior of the two groups of adjustment holes. The studs pass through the adjustment holes and are screwed and fixed with nuts.

[0011] Furthermore, the ends of the two groups of studs are fixedly installed with correction platforms, and two groups of correction platforms are respectively set on both sides of the corrugated cardboard. The cross-sections of the two groups of correction platforms are both "L"-shaped, and a correction space for the corrugated cardboard is formed between the two groups of correction platforms.

[0012] Furthermore, the ends of the two sets of correction platforms are fixedly connected to connecting arms, and the ends of the two sets of connecting arms are respectively installed with infrared transmitters and infrared receivers. A spacing detection space for the corrugated cardboard is formed between the infrared transmitters and the infrared receivers. The infrared transmitters and infrared receivers are respectively arranged on both sides of the corrugated cardboard.

[0013] Furthermore, the integrated dust removal and suction mechanism includes a dust removal plate, exhaust holes, an air inlet pipe, a connecting column, a connecting seat, a docking plate, a negative pressure plate, a negative pressure pipe and an exhaust pipe; the interior of the dust removal plate is hollow, and multiple groups of exhaust holes are evenly installed on the bottom of the dust removal plate, and the multiple groups of exhaust holes are linearly distributed.

[0014] Furthermore, the surface of the dust removal plate is covered with a negative pressure plate, the bottom area of ​​the negative pressure plate is larger than the bottom area of ​​the dust removal plate, the cross-section of the negative pressure plate is an isosceles trapezoid, and connecting columns are installed at both ends of the negative pressure plate and the dust removal plate. The end of the connecting column is fixedly installed with a connecting seat, and a docking plate is welded at the bottom of the connecting seat, and the docking plate is screwed and fixed to the inner wall of the printing press conveyor frame; the length of the dust removal plate is greater than the width of the corrugated cardboard.

[0015] Furthermore, negative pressure tubes are installed on both sides of the surface of the negative pressure plate, the tops of the two groups of negative pressure tubes are connected to the exhaust pipe, and the ends of the exhaust pipes are connected to the negative pressure fan.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention utilizes a paper spacing adjustment mechanism to adjust the spacing between corrugated cardboard sheets. An infrared transmitter and infrared receiver are positioned between the corrugated cardboard sheets on the conveyor belt. The infrared receiver is electrically connected to a servo electric cylinder via a controller. The servo electric cylinder drives the lower pressing seat and silicone pad downward, pressing against the surface of the corrugated cardboard sheets. The ideal spacing between the corrugated cardboard sheets is preset based on printing process requirements and the specifications of the corrugated cardboard sheets. By adjusting the spacing between the corrugated cardboard sheets, the printing press can easily adapt to changes in various corrugated cardboard specifications without having to replace the conveyor belt or perform complex equipment adjustments. This improves the compatibility of the printing press with different corrugated cardboard sheets and allows printing on paper of different sizes.

[0018] 2. The present invention sprays gas from the atomizing nozzle at the bottom of the dust removal disk, which can generate a strong impact force, effectively impacting the surface of the corrugated cardboard, causing the dust originally attached to the cardboard to float quickly, facilitating subsequent dust collection operations. Compared with simple dust collection methods, it can remove dust more thoroughly and improve the dust removal effect; the atomizing nozzle can evenly spray gas on the surface of the corrugated cardboard, covering the entire area to be printed, eliminating dust removal blind spots, ensuring that all parts of the corrugated cardboard can be effectively cleaned, and providing good surface conditions for subsequent printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a rear view of the structure of the present invention;

[0021] Figure 3A top view of the structure of the present invention;

[0022] Figure 4 A side view of the structure of the present invention;

[0023] Figure 5 is a cross-sectional view of the structure of the present invention;

[0024] Figure 6 The structure of the present invention Figure 5 Side view of;

[0025] Figure 7 The structure of the present invention Figure 5 Rear view;

[0026] Figure 8 This is a schematic diagram of the lower pressure seat and its connection structure of the present invention;

[0027] Figure 9 The structure of the present invention Figure 8 Top view of .

[0028] Reference numerals

[0029] 1. Printing press conveyor frame; 2. Conveyor belt; 3. Corrugated cardboard; 4. Paper spacing adjustment mechanism; 40. Correction platform; 41. Connecting arm; 42. Infrared transmitter; 421. Infrared receiver; 43. Adjustment hole; 44. Stud; 45. Positioning seat; 46. Mounting platform; 47. Transmission arm; 471. Lower pressure seat; 472. Silicone pad; 48. Mounting plate; 49. Guide column; 491. Drive plate; 492. Gantry; 493. Servo electric cylinder; 5. Dust removal and suction mechanism; 50. Dust removal disc; 500. Exhaust hole; 51. Inlet pipe; 52. Connecting column; 53. Connecting seat; 54. Docking plate; 55. Negative pressure disc; 56. Negative pressure pipe; 57. Exhaust pipe. DETAILED DESCRIPTION

[0030] Specific implementation method 1: Please refer to Figure 1-9 The present invention provides a technical solution: a paper spacing adjustment device for a flexible printing press, comprising a printing press conveyor frame 1, a conveyor belt 2 is installed on the printing press conveyor frame 1, the surface of the conveyor belt 2 is evenly covered with multiple groups of corrugated cardboards 3, a paper spacing adjustment mechanism 4 is installed on the top of the printing press conveyor frame 1, a dust removal and suction integrated mechanism 5 is installed on one side of the paper spacing adjustment mechanism 4, a positioning seat 45 is provided on the paper spacing adjustment mechanism 4, the positioning seat 45 is screwed and fixed on the side wall of the printing press conveyor frame 1, a mounting platform 46 is fixedly provided on the upper part of the positioning seat 45, a mounting plate 48 is installed on the top of the mounting plate 46, a driving plate 491 is movably installed on the upper surface of the mounting plate 48, a servo electric cylinder 493 is installed on the upper side of the middle part of the driving plate 491, and the output shaft of the servo electric cylinder 493 is fixedly connected to the driving plate 491.

[0031] Working principle: During actual use, a conveyor belt 2 is movably installed on the conveyor frame 1 of the printing press, and multiple groups of corrugated cardboards 3 are arranged on the conveyor belt 2. During the process of conveying the corrugated cardboards 3, printing can be performed by the flexible printing press. A paper spacing adjustment mechanism 4 is provided on the conveyor frame 1 of the printing press. The setting of the paper spacing adjustment mechanism 4 can adjust the spacing between the corrugated cardboards 3 and the corrugated cardboards 3. The specific adjustment method is: when the flexible printing press is printing on the corrugated cardboards 3, an infrared transmitter 42 and an infrared receiver 421 are provided between the corrugated cardboards 3 and the corrugated cardboards 3 on the conveyor belt 2. The spacing between the corrugated cardboards 3 and the infrared transmitter 42 and the infrared receiver 421 are adjusted. When the infrared transmitter 42 and the infrared receiver 421 are in relative positions, the light emitted by the infrared transmitter 42 can be contacted by the infrared receiver 421, and the infrared receiver 421 is electrically connected to the servo electric cylinder 493 through the controller. The servo electric cylinder 493 can drive the lower pressing seat 471 and the silicone pad 472 to move downward and press on the surface of the corrugated cardboard 3; specifically, the infrared transmitter 42 and the infrared receiver 421 are respectively installed on both sides of the conveyor belt 2 to ensure that they are at the same horizontal height and relative to each other, so as to accurately emit and receive infrared light; at the same time, the servo electric cylinder 493, the lower pressing seat 471 and the silicone pad 472 are installed in appropriate positions so that the lower pressing seat 471 and the silicone pad 472 can be pressed by the servo electric cylinder 4 93, it moves vertically downward and presses on the surface of the corrugated cardboard 3; according to the printing process requirements and the specifications of the corrugated cardboard 3, the ideal spacing value between the corrugated cardboards 3 is preset; this value will serve as the basis for subsequent adjustments; when the conveyor belt 2 starts to convey the corrugated cardboard 3, the infrared transmitter 42 continuously emits infrared light; when the corrugated cardboard 3 passes between the infrared transmitter 42 and the infrared receiver 421, the light is blocked, so that the infrared receiver 421 cannot receive the signal; when the spacing between the corrugated cardboards 3 and the relative position between the infrared transmitter 42 and the infrared receiver 421 are reached, the infrared light can be received by the infrared receiver 421, and at this time the infrared receiver 421 sends a signal to the controller; the controller receives the infrared receiver After receiving the signal from the receiver 421, it will compare it with the preset spacing value of the corrugated cardboard 3; if the actual spacing is inconsistent with the preset spacing, the controller will calculate the distance and direction that needs to be adjusted based on the deviation value; the controller sends an instruction to the servo electric cylinder 493 based on the calculation result, and the servo electric cylinder 493 drives the lower pressing seat 471 and the silicone pad 472 to move downward a certain distance according to the instruction, and press on the surface of the corrugated cardboard 3; by pressing down the corrugated cardboard 3, the spacing between the corrugated cardboards 3 can be changed while the conveyor belt 2 continues to run; if the actual spacing is greater than the preset spacing, the pressing time of the lower pressing seat 471 and the silicone pad 472 can be appropriately extended, so that the corrugated cardboard 3 is pushed backward on the conveyor belt 2, thereby reducing the spacing;On the contrary, if the actual spacing is smaller than the preset spacing, the pressing time can be shortened, or the pressing base 471 and the silicone pad 472 can be slightly lifted to allow the corrugated cardboard 3 to move forward on the conveyor belt 2 to increase the spacing. During the printing process, the infrared transmitter 42 and the infrared receiver 421 will continuously detect the spacing between the corrugated cardboards 3 and feed back the information to the controller. The controller will continuously adjust the action of the servo electric cylinder 493 based on this real-time feedback information to ensure that the spacing between the corrugated cardboards 3 is always maintained within the preset range, thereby achieving the adjustment of the spacing between the corrugated cardboards 3.

[0032] When the printing press needs to increase the printing speed, the spacing between the corrugated cardboards 3 can be appropriately increased so that the corrugated cardboards 3 have more time to be transferred and positioned during the conveying process, avoiding collision or paper jam of the corrugated cardboards 3 due to excessive speed, thereby ensuring the smoothness of the printing process and improving the overall printing efficiency; on the contrary, when printing at a low speed, reducing the spacing between the corrugated cardboards 3 can make full use of the working time of the printing press and increase the number of prints per unit time; by adjusting the spacing between the corrugated cardboards 3, the conveying rhythm of the corrugated cardboards 3 can be accurately arranged according to the length of the printing pattern and the working cycle of the printing press, so that the printing press can print as many corrugated cardboards 3 as possible in one working cycle, reducing the idle time of the equipment and improving the utilization rate of the equipment; different printing patterns may require different positioning accuracy of the corrugated cardboards 3; the adjustable spacing between the corrugated cardboards 3 can It enables the operator to precisely control the position of the corrugated cardboard 3 on the conveyor belt according to specific printing requirements, ensuring that the printed pattern is accurately overprinted on the corrugated cardboard 3 and avoiding quality problems such as pattern deviation or overlap. Different printing tasks may involve corrugated cardboards 3 of various specifications, such as different lengths, widths and thicknesses. By adjusting the spacing between the corrugated cardboards 3, it is possible to easily adapt to changes in the specifications of various corrugated cardboards 3 without having to replace the conveyor belt or perform complex equipment adjustments, thereby improving the compatibility of the printing press with different corrugated cardboards 3. For some special printing tasks, such as the need to print multiple different patterns on the corrugated cardboard 3 or perform regional printing, the adjustable spacing between the corrugated cardboards 3 can flexibly adjust the conveying position and spacing of the corrugated cardboards 3 according to specific printing layout requirements to meet diverse printing needs.

[0033] Before printing on the surface of the corrugated cardboard 3, the dust removal and dust suction integrated mechanism 5 can be used to remove dust from the surface of the corrugated cardboard 3. The specific method is: gas is ejected from the atomizing nozzle at the bottom of the dust removal disk 50, which can generate a strong impact force, effectively impacting the surface of the corrugated cardboard 3, so that the dust originally attached to the cardboard quickly floats up, which is convenient for subsequent dust suction operations. Compared with the simple dust suction method, it can remove dust more thoroughly and improve the dust removal effect; the atomizing nozzle can spray gas evenly on the surface of the corrugated cardboard 3, covering the entire area to be printed, without dust removal dead corners, ensuring that all parts of the corrugated cardboard 3 can be effectively cleaned, providing good surface conditions for subsequent printing; different from some dust removal methods such as mechanical brushing, this gas impact method does not directly contact the surface of the corrugated cardboard 3, thereby avoiding scratches on the cardboard surface that may be caused by mechanical friction, and protecting the corrugated cardboard 3. The integrity and surface quality are beneficial to improving the appearance of printed products; thorough dust removal can effectively prevent dust from mixing into ink or adhering to the printing plate during the printing process, avoiding printing defects caused by dust particles, such as ink spots, missing prints, etc., helping to ensure the clarity and color uniformity of printing and improve printing quality; the negative pressure plate 55 promptly sucks the floating dust, collects the dust, and prevents it from spreading to the surrounding environment, reducing dust pollution in the workshop, improving the working environment, and being beneficial to the health of the operators, while also meeting environmental protection requirements; the collected dust can be centrally processed to avoid pollution to the environment caused by random discarding of dust; the entire dust removal process is automatically completed by gas ejection and negative pressure dust suction. The operator only needs to start the equipment without complicated operations and adjustments, which reduces the difficulty and workload of manual operation and improves work efficiency.

[0034] Specific embodiment 2: This embodiment is a further limitation of specific embodiment 1. The paper spacing adjustment mechanism 4 includes a correction platform 40, a connecting arm 41, an infrared transmitter 42, an infrared receiver 421, an adjustment hole 43, a stud 44, a positioning seat 45, a mounting platform 46, a transmission arm 47, a lower pressure seat 471, a silicone pad 472, a mounting plate 48, a guide column 49, a drive plate 491, a gantry 492 and a servo electric cylinder 493. The servo electric cylinder 493 is screwed and fixed to the middle part of the gantry 492, and both sides of the bottom of the gantry 492 are fixedly connected to the mounting plate 48.

[0035] Specific embodiment three: This embodiment is a further limitation of specific embodiment two. Guide holes are opened on both sides of the surface of the mounting plate 48, and transmission arms 47 are inserted into the two groups of guide holes. The two groups of transmission arms 47 are respectively fixedly connected to the two sides of the bottom of the driving plate 491. Guide columns 49 are inserted on both sides of the surface of the driving plate 491. The top of the guide column 49 is fixedly connected to the gantry 492, and the bottom of the guide column 49 is fixedly connected to the mounting plate 48.

[0036] Specific embodiment four: This embodiment is a further limitation of specific embodiment three. A lower pressure seat 471 is installed at the bottom of the two sets of transmission arms 47. The lower pressure seat 471 is an arc-shaped structure made of plastic material. The bottom of the two sets of lower pressure seats 471 are bonded and fixed with silicone pads 472. The two sets of lower pressure seats 471 are respectively arranged on both sides of the surface of the corrugated cardboard 3; the two sets of lower pressure seats 471 are driven to rise and fall synchronously through the servo electric cylinder 493 and the drive plate 491.

[0037] Specific embodiment five: This embodiment is a further limitation of specific embodiment two. The mounting platform 46 is an "L"-shaped structure made of metal material. The mounting platform 46 is fixedly mounted on the printing press conveyor frame 1 through a positioning seat 45. Two groups of adjustment holes 43 are opened on the side wall of the mounting platform 46. Studs 44 are inserted into the interior of the two groups of adjustment holes 43. The studs 44 pass through the adjustment holes 43 and are screwed and fixed with nuts.

[0038] Specific embodiment six: This embodiment is a further limitation of specific embodiment five. The ends of the two groups of studs 44 are fixedly installed with correction platforms 40. Two groups of correction platforms 40 are respectively provided on both sides of the corrugated cardboard 3. The cross-sections of the two groups of correction platforms 40 are both "L"-shaped. A correction space for the corrugated cardboard 3 is formed between the two groups of correction platforms 40.

[0039] Specific embodiment seven: This embodiment is a further limitation of specific embodiment six. The ends of the two groups of correction platforms 40 are fixedly connected to the connecting arms 41, and the ends of the two groups of connecting arms 41 are respectively installed with infrared transmitters 42 and infrared receivers 421. A spacing detection space for the corrugated cardboard 3 is formed between the infrared transmitters 42 and the infrared receivers 421. The infrared transmitters 42 and the infrared receivers 421 are respectively arranged on both sides of the corrugated cardboard 3.

[0040] Specific embodiment eight: This embodiment is a further limitation of specific embodiment one. The integrated dust removal and suction mechanism 5 includes a dust removal disc 50, exhaust holes 500, an air inlet pipe 51, a connecting column 52, a connecting seat 53, a docking plate 54, a negative pressure disc 55, a negative pressure pipe 56 and an exhaust pipe 57; the interior of the dust removal disc 50 is hollow, and multiple groups of exhaust holes 500 are evenly installed on the bottom of the dust removal disc 50, and the multiple groups of exhaust holes 500 are linearly distributed.

[0041] Specific embodiment nine: This embodiment is a further limitation of specific embodiment eight. The surface of the dust removal disc 50 is covered with a negative pressure disc 55. The bottom area of ​​the negative pressure disc 55 is larger than the bottom area of ​​the dust removal disc 50. The cross-section of the negative pressure disc 55 is an isosceles trapezoidal setting. Connecting columns 52 are installed at both ends of the negative pressure disc 55 and the dust removal disc 50. A connecting seat 53 is fixedly installed at the end of the connecting column 52. A docking plate 54 is welded to the bottom of the connecting seat 53. The docking plate 54 is screwed and fixed to the inner wall of the printing press conveyor frame 1; the length of the dust removal disc 50 is greater than the width of the corrugated cardboard 3.

[0042] Specific embodiment ten: This embodiment is a further limitation of specific embodiment nine. Negative pressure tubes 56 are installed on both sides of the surface of the negative pressure plate 55. The tops of the two groups of negative pressure tubes 56 are connected to the exhaust pipe 57, and the ends of the exhaust pipe 57 are connected to the negative pressure fan.

Claims

1. A paper spacing adjustment device for a flexible printing press, comprising a printing press conveyor frame (1), characterized in that: The printing press conveyor frame (1) is provided with a conveyor belt (2), the surface of the conveyor belt (2) is evenly covered with a plurality of groups of corrugated cardboards (3), a paper spacing adjustment mechanism (4) is provided on the top of the printing press conveyor frame (1), a dust removal and dust collection integrated mechanism (5) is provided on one side of the paper spacing adjustment mechanism (4), a positioning seat (45) is provided on the paper spacing adjustment mechanism (4), the positioning seat (45) is screwed and fixed on the side wall of the printing press conveyor frame (1), a mounting platform (46) is fixedly provided on the upper part of the positioning seat (45), a mounting plate (48) is installed on the top of the mounting platform (46), a driving plate (491) is movably installed on the upper surface of the mounting plate (48), a servo electric cylinder (493) is installed on the upper side of the middle part of the driving plate (491), and an output shaft of the servo electric cylinder (493) is fixedly connected to the driving plate (491); The paper spacing adjustment mechanism (4) includes a correction platform (40), a connecting arm (41), an infrared transmitter (42), an infrared receiver (421), an adjustment hole (43), a stud (44), a positioning seat (45), a mounting platform (46), a transmission arm (47), a lower pressure seat (471), a silicone pad (472), a mounting plate (48), a guide column (49), a drive plate (491), a gantry (492) and a servo electric cylinder (493). The servo electric cylinder (493) is screwed and fixed to the middle of the gantry (492). Both sides of the bottom of the gantry (492) are fixedly connected to the mounting plate (48). The mounting platform (46) is an "L"-shaped structure made of metal material. The mounting platform (46) is fixedly mounted on the printing press conveyor frame (1) through the positioning seat (45). Two groups of adjustment holes (43) are opened on the side wall of the mounting platform (46). ), the interiors of the two groups of adjustment holes (43) are both interspersed with studs (44), the studs (44) pass through the adjustment holes (43) and are screwed and fixed with nuts; the ends of the two groups of studs (44) are fixedly installed with correction platforms (40), two groups of correction platforms (40) are respectively provided on both sides of the corrugated cardboard (3), the cross-sections of the two groups of correction platforms (40) are both "L"-shaped, and a correction space for the corrugated cardboard (3) is formed between the two groups of correction platforms (40); the ends of the two groups of correction platforms (40) are both fixedly connected with connecting arms (41), the ends of the two groups of connecting arms (41) are respectively installed with infrared transmitters (42) and infrared receivers (421), and a spacing detection space for the corrugated cardboard (3) is formed between the infrared transmitters (42) and the infrared receivers (421), and the infrared transmitters (42) and the infrared receivers (421) are respectively provided on both sides of the corrugated cardboard (3); The dust collecting and dust collecting integrated mechanism (5) comprises a dust collecting plate (50), an exhaust hole (500), an air inlet pipe (51), a connecting column (52), a connecting seat (53), a docking plate (54), a negative pressure plate (55), a negative pressure pipe (56) and an exhaust pipe (57); the interior of the dust collecting plate (50) is hollow, and a plurality of exhaust holes (500) are evenly installed on the bottom of the dust collecting plate (50), and the plurality of exhaust holes (500) are linearly distributed; the surface of the dust collecting plate (50) is covered with a negative pressure plate (55), the bottom area of ​​the negative pressure plate (55) is larger than the bottom area of ​​the dust collecting plate (50), and the cross section of the negative pressure plate (55) is The negative pressure plate (55) and the dust removal plate (50) are arranged in an isosceles trapezoidal shape. Connecting columns (52) are installed at both ends of the negative pressure plate (55) and the dust removal plate (50). A connecting seat (53) is fixedly installed at the end of the connecting column (52). A docking plate (54) is welded to the bottom of the connecting seat (53). The docking plate (54) is screwed and fixed to the inner wall of the printing press conveyor frame (1). The length of the dust removal plate (50) is greater than the width of the corrugated cardboard (3). Negative pressure pipes (56) are installed on both sides of the surface of the negative pressure plate (55). The tops of the two sets of negative pressure pipes (56) are connected to the exhaust pipe (57), and the ends of the exhaust pipe (57) are connected to the negative pressure fan.

2. The paper spacing adjustment device for a flexible printing press according to claim 1, characterized in that: Guide holes are provided on both sides of the surface of the mounting plate (48), and transmission arms (47) are inserted into the two sets of guide holes. The two sets of transmission arms (47) are respectively fixedly connected to the two sides of the bottom of the driving plate (491). Guide columns (49) are inserted into both sides of the surface of the driving plate (491). The top of the guide column (49) is fixedly connected to the gantry (492), and the bottom of the guide column (49) is fixedly connected to the mounting plate (48).

3. The paper spacing adjustment device for a flexible printing press according to claim 2, characterized in that: A lower pressing seat (471) is installed at the bottom of the two sets of transmission arms (47), and the lower pressing seat (471) is an arc-shaped structure made of plastic material. The bottoms of the two sets of lower pressing seats (471) are bonded and fixed with silicone pads (472). The two sets of lower pressing seats (471) are respectively arranged on both sides of the surface of the corrugated cardboard (3); the two sets of lower pressing seats (471) are driven to rise and fall synchronously through the servo electric cylinder (493) and the driving plate (491).

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