Double-diameter impression cylinder double-sided printing machine

Abstract

The invention discloses a double-diameter impression cylinder double-sided press, which belongs to the technical field of printing and comprises a first double-diameter impression assembly. The discharging end of the first double-diameter impressing assembly is connected with a turn-over assembly used for turning over. A second double-diameter impressing assembly used for ground printing of the printed matter is arranged at the discharging end of the turn-over assembly; the end of the first double-diameter impressing assembly, the end of the second double-diameter impressing assembly and the end of the turn-over assembly are provided with position detection assemblies used for detecting the tooth meshing position. The position detection assemblies are fixedly connected with the rack. The position detection assembly is electrically connected with a control system. According to the double-diameter impressing device, double-face printing of printed matter is achieved, compared with an existing mode that a second double-diameter impressing assembly is arranged below a first double-diameter impressing assembly for double-face printing, pigment adding is more convenient, and the overall device is low in height; whether the engaged teeth deviate inwards or outwards or not can be conveniently and accurately detected, the phenomenon that the tooth engagement pressure is too large or too small is avoided, and actual use is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the printing technical field, specifically relates to a double-diameter impression cylinder double-sided printing machine. BACKGROUND

[0002] In order to ensure the quality of double-sided printing, the double-sided printing equipment is designed.

[0003] For example, a single sheet double-sided inkjet printer in Chinese patent CN221541019U includes a machine shell, a paper feeding device mounted on the machine shell, a paper feeding device, an inkjet device, and a paper collecting device. The paper feeding device includes a support wall plate, a front surface inkjet cylinder, a first paper conveying cylinder, a second paper conveying cylinder, and a back surface inkjet cylinder. The front surface inkjet cylinder and the back surface inkjet cylinder use a three-diameter cylinder or a four-diameter cylinder. The first paper conveying cylinder and the second paper conveying cylinder use a single-diameter cylinder or a double-diameter cylinder. While ensuring high-speed paper transmission, the device installation space is effectively compressed, and the device volume is reduced. The three-diameter cylinder or the four-diameter cylinder is used as the front surface inkjet cylinder and the back surface inkjet cylinder, and is matched with an ink drying device. After the paper is wrapped around the cylinder surface, the flatness is good, and the ink drying device can dry the ink on the paper in time. Therefore, the inkjet quality is good, and the device is suitable for widespread application.

[0004] The above structure performs bottom surface printing immediately after top surface printing, and the printing efficiency is indeed improved. The overall structure layout is higher, and the bottom surface printing pigment is located at the lower end of the machine shell, which is more troublesome for pigment addition and cleaning. In addition, the bite position is not detected, which may cause excessive or insufficient pressure.

[0005] Therefore, the present application designs a double-diameter impression cylinder double-sided printing machine. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the present application provides a double-diameter impression cylinder double-sided printing machine.

[0007] To achieve the above-mentioned purposes, the present application is realized by the following technical solutions:

[0008] A double-diameter impression cylinder double-sided printing machine, comprising a first double-diameter impression assembly;

[0009] The discharge end of the first double-diameter impression assembly for top surface printing of printed matter is connected with a turning assembly for turning;

[0010] The discharge end of the turning assembly is provided with a second double-diameter impression assembly for ground surface printing of printed matter;

[0011] The first double-diameter impression assembly, the second double-diameter impression assembly, and the turning assembly are provided with a position detection assembly for bite position detection, and the position detection assembly is fixedly connected with the rack.

[0012] The position detection assembly is electrically connected with the control system.

[0013] Further, the first double-diameter impression assembly comprises a first plate cylinder, a first rubber cylinder and a first impression cylinder, the first plate cylinder, the first rubber cylinder and the first impression cylinder are rotationally connected with the rack, the first plate cylinder is located below the pigment supply structure, the first plate cylinder, the first rubber cylinder and the first impression cylinder are arranged from top to bottom, the first rubber cylinder is rotationally connected with the first plate cylinder and the first impression cylinder respectively, and the diameter of the first impression cylinder is twice the diameter of the first rubber cylinder.

[0014] Further, the turning-over assembly comprises a first transmission cylinder, a second transmission cylinder and a third transmission cylinder, the first transmission cylinder, the second transmission cylinder and the third transmission cylinder are rotationally connected with the rack, the first transmission cylinder and the third transmission cylinder are located on both sides of the second transmission cylinder, the first transmission cylinder is located at the discharging end of the first impression cylinder, the rotation directions of the first transmission cylinder and the third transmission cylinder are the same, the rotation direction of the first transmission cylinder is opposite to that of the first impression cylinder, the rotation direction of the first transmission cylinder is opposite to that of the second transmission cylinder, and the diameter of the second transmission cylinder is twice the diameter of the first transmission cylinder.

[0015] Further, the second double-diameter impression assembly comprises a second plate cylinder, a second rubber cylinder and a second impression cylinder, the second plate cylinder, the second rubber cylinder and the second impression cylinder are rotationally connected with the rack, the second plate cylinder is located below the pigment supply structure, the second plate cylinder, the second rubber cylinder and the second impression cylinder are arranged from top to bottom, the second rubber cylinder is rotationally connected with the second plate cylinder and the second impression cylinder respectively, and the diameter of the second impression cylinder is twice the diameter of the second rubber cylinder.

[0016] Further, the position detection assembly comprises an inner deviation detection assembly and an outer deviation detection assembly, the inner deviation detection assembly and the outer deviation detection assembly are fixedly connected with the rack, the nip of the first impression cylinder, the first transmission cylinder, the second transmission cylinder, the third transmission cylinder and the second impression cylinder is in an open state, when the first impression cylinder, the first transmission cylinder, the second transmission cylinder, the third transmission cylinder and the second impression cylinder rotate to the inner deviation detection assembly, the detection end of the inner deviation detection assembly is close to the end of the cylinder body of the first impression cylinder, the first transmission cylinder, the second transmission cylinder, the third transmission cylinder and the second impression cylinder, when the first impression cylinder, the first transmission cylinder, the second transmission cylinder, the third transmission cylinder and the second impression cylinder rotate to the outer deviation detection assembly, the detection end of the outer deviation detection assembly is away from the end of the cylinder body of the first impression cylinder, the first transmission cylinder, the second transmission cylinder, the third transmission cylinder and the second impression cylinder, and the inner deviation detection assembly and the outer deviation detection assembly are electrically connected with the control system.

[0017] Further, the inner deviation detection assembly comprises a first ultrasonic transceiver, the first ultrasonic transceiver is fixedly connected with the rack, the first ultrasonic transceiver is electrically connected with the control system, the emitting end of the first ultrasonic transceiver is arranged in parallel with the rotating axis of the first impression cylinder, the first transfer cylinder, the second transfer cylinder, the third transfer cylinder or the second impression cylinder, and when the nip of the first impression cylinder, the first transfer cylinder, the second transfer cylinder, the third transfer cylinder and the second impression cylinder is in an open state and rotates to the first ultrasonic transceiver, the detection end of the first ultrasonic transceiver is close to the end of the cylinder body of the first impression cylinder, the first transfer cylinder, the second transfer cylinder, the third transfer cylinder and the second impression cylinder.

[0018] Further, the outer deviation detection assembly comprises a second ultrasonic transceiver, the second ultrasonic transceiver is fixedly connected with the rack, the second ultrasonic transceiver is electrically connected with the control system, the emitting end of the second ultrasonic transceiver is arranged in parallel with the rotating axis of the first impression cylinder, the first transfer cylinder, the second transfer cylinder, the third transfer cylinder or the second impression cylinder, and when the nip of the first impression cylinder, the first transfer cylinder, the second transfer cylinder, the third transfer cylinder and the second impression cylinder is in an open state and rotates to the second ultrasonic transceiver, the detection end of the second ultrasonic transceiver is away from the end of the cylinder body of the first impression cylinder, the first transfer cylinder, the second transfer cylinder, the third transfer cylinder and the second impression cylinder.

[0019] Advantages

[0020] The paper feeding structure feeds the printed matter into the first double-diameter impression assembly, the first double-diameter impression assembly prints the top surface of the printed matter, then the turnover assembly turns over the bottom surface of the printed matter printed by the first double-diameter impression assembly to the second double-diameter impression assembly, and then the second double-diameter impression assembly prints the bottom surface of the printed matter, realizing double-sided printing of the printed matter. Compared with the prior art, the second double-diameter impression assembly is arranged below the first double-diameter impression assembly for double-sided printing, which is more convenient for adding pigment, and the overall equipment height is low. The position detection assembly and the control system cooperate to detect whether the nip of the first double-diameter impression assembly, the second double-diameter impression assembly and the turnover assembly deviates inward or outward, and if the nip deviates inward or outward, it needs to be adjusted, otherwise it does not need to be processed, which is convenient for accurately detecting whether the nip deviates inward or outward, avoids the phenomenon that the nip pressure is too large or too small, and is beneficial to actual use. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0022] Fig. 1 is a front view of the main structure of the present application;

[0023] Fig. 2 is a top view of the first ultrasonic transceiver and its connecting structure of the present application.

[0024] The numbers in the drawings represent respectively:

[0025] 1. First plate cylinder 2. First blanket cylinder 3. First impression cylinder 4. First transfer cylinder 5. Second transfer cylinder 6. Third transfer cylinder 7. Second plate cylinder 8. Second blanket cylinder 9. Second impression cylinder 10. Control system 11. First ultrasonic transceiver 12. Second ultrasonic transceiver. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present application.

[0027] The present application will be further described below in conjunction with the embodiments.

[0028] In some embodiments: please refer to the drawings attached Figs. 1-2 in the description, a double-diameter impression cylinder double-sided printing machine, comprising a first double-diameter impression assembly;

[0029] The discharge end of the first double-diameter impression assembly for top printing of printed matter is connected with a turning assembly for turning;

[0030] The discharge end of the turning assembly is provided with a second double-diameter impression assembly for ground printing of printed matter;

[0031] The first double-diameter impression assembly, the second double-diameter impression assembly and the turning assembly are provided at the end with a position detection assembly for bite position detection, and the position detection assembly is fixedly connected with the rack;

[0032] The position detection assembly is electrically connected with the control system 10;

[0033] The first double-diameter impression assembly, the second double-diameter impression assembly and the turnover assembly are connected with the rack;

[0034] The rack is provided with a pigment supply structure located directly above the first double-diameter impression assembly and the second double-diameter impression assembly;

[0035] The paper feeding structure delivers the printed matter to the first double-diameter impression assembly, and the first double-diameter impression assembly prints the top surface of the printed matter, and then the turnover assembly turns over the bottom surface of the printed matter printed by the first double-diameter impression assembly to the second double-diameter impression assembly, and then the second double-diameter impression assembly prints the bottom surface of the printed matter, realizing double-sided printing of the printed matter. Compared with the prior art, the second double-diameter impression assembly is arranged below the first double-diameter impression assembly for double-sided printing, which is more convenient for adding pigment, and the overall equipment height is low. The position detection assembly and the control system 10 cooperate to detect whether the bite of the first double-diameter impression assembly, the second double-diameter impression assembly and the turnover assembly is inwardly or outwardly deviated. If the inward or outward deviation is detected, it indicates that adjustment is needed, otherwise no treatment is needed. This facilitates accurate detection of whether the bite is inwardly or outwardly deviated, avoids the phenomenon of excessive or insufficient bite pressure, and is beneficial to actual use.

[0036] The first double-diameter impression assembly comprises a first plate cylinder 1, a first rubber cylinder 2 and a first impression cylinder 3. The first plate cylinder 1, the first rubber cylinder 2 and the first impression cylinder 3 are rotationally connected with the rack. The first plate cylinder 1 is located below the pigment supply structure. The first plate cylinder 1, the first rubber cylinder 2 and the first impression cylinder 3 are arranged from top to bottom. The first rubber cylinder 2 is rotationally connected with the first plate cylinder 1 and the first impression cylinder 3 respectively. The diameter of the first impression cylinder 3 is twice the diameter of the first rubber cylinder 2.

[0037] The paper feeding structure delivers the printed matter to the first impression cylinder 3 of the first double-diameter impression assembly. The first impression cylinder 3 drives the printed matter to rotate below the first rubber cylinder 2. At the same time, the rotating first plate cylinder 1 transfers the pigment in the pigment supply structure to the first rubber cylinder 2. The first rubber cylinder 2 and the first impression cylinder 3 cooperate to transfer the pigment to the top surface of the printed matter.

[0038] The turnover assembly comprises a first transmission cylinder 4, a second transmission cylinder 5 and a third transmission cylinder 6. The first transmission cylinder 4, the second transmission cylinder 5 and the third transmission cylinder 6 are rotationally connected with the rack. The first transmission cylinder 4 and the third transmission cylinder 6 are located on both sides of the second transmission cylinder 5. The first transmission cylinder 4 is located at the discharge end of the first impression cylinder 3. The first transmission cylinder 4 and the third transmission cylinder 6 have the same rotation direction. The rotation direction of the first transmission cylinder 4 and the first impression cylinder 3 is opposite. The rotation direction of the first transmission cylinder 4 and the second transmission cylinder 5 is opposite. The diameter of the second transmission cylinder 5 is twice the diameter of the first transmission cylinder 4.

[0039] The first transfer cylinder 4 of the turning-over assembly clamps the end of the printed matter after the first impression cylinder 3 prints, and then rotates to the second transfer cylinder 5, which clamps the end of the printed matter. The second transfer cylinder 5 rotates to the third transfer cylinder 6, which clamps the end of the printed matter away from the second transfer cylinder 5. The third transfer cylinder 6 rotates to deliver the printed matter to the second double-diameter impression assembly. The second transfer cylinder 5 continues to rotate the end of the printed matter. When the second transfer cylinder 5 rotates to the lowermost end, the second transfer cylinder 5 releases the printed matter. The third transfer cylinder 6 continues to rotate to deliver the printed matter to the second double-diameter impression assembly, which realizes the ground-to-top turning-over of the printed matter and delivers it to the second double-diameter impression assembly.

[0040] The second double-diameter impression assembly includes a second plate cylinder 7, a second rubber cylinder 8, and a second impression cylinder 9. The second plate cylinder 7, the second rubber cylinder 8, and the second impression cylinder 9 are rotationally connected to the frame. The second plate cylinder 7 is located below the pigment supply structure. The second plate cylinder 7, the second rubber cylinder 8, and the second impression cylinder 9 are arranged from top to bottom. The second rubber cylinder 8 is rotationally connected to the second plate cylinder 7 and the second impression cylinder 9. The diameter of the second impression cylinder 9 is twice that of the second rubber cylinder 8.

[0041] The third transfer cylinder 6 delivers the turned-over printed matter to the second impression cylinder 9 of the second double-diameter impression assembly. The second impression cylinder 9 rotates the printed matter to below the second rubber cylinder 8. At the same time, the rotating second plate cylinder 7 transfers the pigment in the pigment supply structure to the second rubber cylinder 8. The second rubber cylinder 8 and the second impression cylinder 9 cooperate to transfer the pigment to the bottom surface of the printed matter, realizing double-sided printing.

[0042] The position detection assembly comprises an inner deviation detection assembly and an outer deviation detection assembly, the inner deviation detection assembly and the outer deviation detection assembly are fixedly connected with the rack, the nip of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 is in an open state, and when the nip is rotated to the inner deviation detection assembly, the detection end of the inner deviation detection assembly is close to the end of the cylinder body of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9, and when the nip of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 is in an open state and is rotated to the outer deviation detection assembly, the detection end of the outer deviation detection assembly is away from the end of the cylinder body of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9, and the inner deviation detection assembly and the outer deviation detection assembly are electrically connected with the control system 10;

[0043] When the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 are rotated to the inner deviation detection assembly, the inner deviation detection assembly detects whether the clamping end of the nip of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 is closer to the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 than the set position;

[0044] When the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 are rotated to the outer deviation detection assembly, the outer deviation detection assembly detects whether the clamping end of the nip of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 is farther away from the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 than the set position.

[0045] The inner deviation detection assembly comprises a first ultrasonic transceiver 11 fixedly connected with the rack, electrically connected with the control system 10, and having a transmission end parallel to the rotation axis of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 or the second impression cylinder 9; when the nip of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 is in an open state and rotates to the first ultrasonic transceiver 11, the detection end of the first ultrasonic transceiver 11 is close to the end of the cylinder body of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9;

[0046] The nip of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 is driven to be open, and then rotates to the first ultrasonic transceiver 11; the first ultrasonic transceiver 11 emits ultrasonic waves, receives the ultrasonic waves again, and the control system 10 calculates the time from the emission of the ultrasonic waves to the reception of the ultrasonic waves, and then calculates the detection distance through the speed of the ultrasonic waves; when the detection distance is twice the distance from the detection end of the first ultrasonic transceiver 11 to the part of the rack directly opposite, it indicates that the nip is not deviated inward; when the detection distance is less than twice the distance from the detection end of the first ultrasonic transceiver 11 to the part of the rack directly opposite, it indicates that the nip is deviated inward; and the actual distance is obtained by dividing the detection distance by two, which indicates that the nip at the actual distance is deviated inward, so that the nip deviated inward can be accurately found, and the phenomenon of excessive nip pressure can be avoided;

[0047] The outer deviation detection assembly comprises a second ultrasonic transceiver 12 fixedly connected with the rack, electrically connected with the control system 10, and having a transmission end parallel to the rotation axis of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 or the second impression cylinder 9; when the nip of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9 is in an open state and rotates to the second ultrasonic transceiver 12, the detection end of the second ultrasonic transceiver 12 is away from the end of the cylinder body of the first impression cylinder 3, the first transfer cylinder 4, the second transfer cylinder 5, the third transfer cylinder 6 and the second impression cylinder 9;

[0048] The first impression cylinder 3, the first transmission cylinder 4, the second transmission cylinder 5, the third transmission cylinder 6 and the second impression cylinder 9 are driven to open the bite, and then rotate to the second ultrasonic transceiver 12, the second ultrasonic transceiver 12 emits ultrasonic waves, the second ultrasonic transceiver 12 receives the ultrasonic waves again, the control system 10 calculates the time from the second ultrasonic transceiver 12 emitting ultrasonic waves to receiving ultrasonic waves, and then calculates the detection distance through the speed of ultrasonic waves. When the detection distance is twice the distance from the detection end of the second ultrasonic transceiver 12 to the part of the frame directly opposite, it indicates that the bite is not outwardly deviated. When the detection distance is less than twice the distance from the detection end of the second ultrasonic transceiver 12 to the part of the frame directly opposite, it indicates that there is a bite outwardly deviated. The actual distance is obtained by dividing the detection distance by two, indicating that the bite at the actual distance is outwardly deviated, and the outwardly deviated bite is accurately found, avoiding the phenomenon of small bite pressure.

[0049] It is convenient to accurately detect whether the bite is inwardly or outwardly deviated, avoid the phenomenon of excessive or small bite pressure, and facilitate actual use.

[0050] The above examples are only used to illustrate the technical solutions of the present application, but not limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, without departing from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A double-diameter impression cylinder double-sided printing press, comprising a first double-diameter impression assembly, characterized in that ； The discharge end of the first double-diameter stamping assembly for printing the top surface of the printed product is connected to a turning assembly for turning the printed product over; The discharge end of the flip assembly is provided with a second double-diameter stamping assembly for ground printing of printed matter; Position detection components for detecting the position of the teeth are provided at the ends of the first double-diameter stamping component, the second double-diameter stamping component and the flipping component, and the position detection components are fixedly connected to the frame; The position detection component is electrically connected to a control system (10).

2. The double-diameter impression cylinder double-sided printing press according to claim 1, characterized in that: The first double-diameter stamping assembly comprises a first plate cylinder (1), a first rubber cylinder (2) and a first stamping cylinder (3); the first plate cylinder (1), the first rubber cylinder (2) and the first stamping cylinder (3) are rotatably connected to a frame; the first plate cylinder (1) is located below a pigment supply structure; the first plate cylinder (1), the first rubber cylinder (2) and the first stamping cylinder (3) are arranged from top to bottom; the first rubber cylinder (2) is rotatably connected to the first plate cylinder (1) and the first stamping cylinder (3) respectively; and the diameter of the first stamping cylinder (3) is twice the diameter of the first rubber cylinder (2).

3. The double-diameter impression cylinder double-sided printing press according to claim 2, characterized in that: The turning assembly comprises a first transmission roller (4), a second transmission roller (5) and a third transmission roller (6); the first transmission roller (4), the second transmission roller (5) and the third transmission roller (6) are rotatably connected to the frame; the first transmission roller (4) and the third transmission roller (6) are located on both sides of the second transmission roller (5); and the first transmission roller (4) is located at the discharge end of the first impression roller (3); the first transmission roller (4) and the third transmission roller (6) have the same rotation direction; the first transmission roller (4) and the first impression roller (3) have opposite rotation directions; the first transmission roller (4) and the second transmission roller (5) have opposite rotation directions; and the diameter of the second transmission roller (5) is twice the diameter of the first transmission roller (4).

4. The double-diameter impression cylinder double-sided printing press according to claim 3, characterized in that: The second double-diameter stamping assembly comprises a second plate cylinder (7), a second rubber cylinder (8) and a second impression cylinder (9); the second plate cylinder (7), the second rubber cylinder (8) and the second impression cylinder (9) are rotatably connected to the frame; the second plate cylinder (7) is located below the pigment supply structure; the second plate cylinder (7), the second rubber cylinder (8) and the second impression cylinder (9) are arranged from top to bottom; the second rubber cylinder (8) is respectively rotatably connected to the second plate cylinder (7) and the second impression cylinder (9); the diameter of the second impression cylinder (9) is twice the diameter of the second rubber cylinder (8).

5. The double-diameter impression cylinder double-sided printing press according to claim 4, characterized in that: The position detection component comprises an inner deviation detection component and an outer deviation detection component, wherein the inner deviation detection component and the outer deviation detection component are fixedly connected to the frame, the teeth of the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9) are in an open state, and when the teeth are rotated to the inner deviation detection component, the detection end of the inner deviation detection component is aligned with the end of the cylinder body of the teeth close to the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9), and the teeth of the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9) are in an open state, and when the teeth are rotated to the outer deviation detection component, the detection end of the outer deviation detection component is aligned with the end of the cylinder body of the teeth away from the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9), and the inner deviation detection component and the outer deviation detection component are electrically connected to the control system (10).

6. The double-diameter impression cylinder double-sided printing press according to claim 4, characterized in that: The inner deviation detection component includes a first ultrasonic transceiver (11), the first ultrasonic transceiver (11) is fixedly connected to the frame, the first ultrasonic transceiver (11) is electrically connected to the control system (10), the transmitting end of the first ultrasonic transceiver (11) is arranged parallel to the rotation axis of the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) or the second impression roller (9), and the teeth of the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9) are in an open state and rotate to the first ultrasonic transceiver (11), the detection end of the first ultrasonic transceiver (11) is aligned with the teeth close to the end of the cylinder of the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9).

7. The double-diameter impression cylinder double-sided printing press according to claim 5, characterized in that: The outward deviation detection component includes a second ultrasonic transceiver (12), the second ultrasonic transceiver (12) is fixedly connected to the frame, the second ultrasonic transceiver (12) is electrically connected to the control system (10), the transmitting end of the second ultrasonic transceiver (12) is arranged parallel to the rotation axis of the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) or the second impression roller (9), and the teeth of the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9) are in an open state and rotate to the second ultrasonic transceiver (12), the detection end of the second ultrasonic transceiver (12) is aligned with the end of the cylinder body away from the first impression roller (3), the first transmission roller (4), the second transmission roller (5), the third transmission roller (6) and the second impression roller (9).

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