Bill turnover mechanism and printing equipment

Abstract

The utility model discloses a bill turnover mechanism and printing equipment, and relates to the technical field of bill printing, the bill turnover mechanism comprises a support used for overall equipment assembly, the front end and the rear end of the end portion of the support are connected with turnover assemblies in a fastening mode through bolts, and the turnover assemblies are used for carrying out turnover adjustment on bills; meanwhile, the center of the end of the support is fixedly connected with a base table through a bolt, and the left end and the right end of the bottom of the base table are provided with an air supply roller body and a conveying guide roller respectively. According to the scheme, efficient turnover of bills is achieved, and smooth double-face printing is guaranteed; and meanwhile, stains on the conveying rollers are regularly removed, and the conveyed bills are blow-dried, so that pollution caused by the fact that ink is not dried is avoided, and the overall printing efficiency and quality are improved.

Description

Technical Field

[0001] This utility model belongs to the field of bill printing technology, and in particular relates to a bill flipping mechanism and printing equipment. Background Technology

[0002] In modern society, receipts serve as crucial carriers of commercial transactions, financial records, legal documents, and information transmission, finding widespread application in finance, taxation, transportation, healthcare, and many other fields. For continuous, long, strip-shaped receipts (such as receipt tapes and invoice rolls), efficient printing is essential to ensure the integrity and accuracy of information while improving work efficiency and reducing human error. Double-sided printing can fully utilize paper space, increase information density, and reduce costs; however, achieving double-sided printing of continuous, long, strip-shaped receipts presents numerous challenges.

[0003] Existing ticket printing equipment typically only handles single-sided printing or requires complex mechanical operations to flip the tickets for double-sided printing. For continuous long strips of tickets, this traditional flipping method not only increases operational complexity and time costs, but also leads to ink and dust accumulation on the conveyor rollers during ticket transport. If not cleaned promptly, this can result in stains on subsequent printed materials, affecting printing quality. Particularly concerning are tickets that have just completed single-sided printing, as the ink is not yet fully dry. Directly transferring them to the next process can easily cause ink stains to spread inside the equipment or to other unprinted areas, impacting print quality and equipment maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a ticket flipping mechanism and printing equipment to solve the technical problems of low efficiency in double-sided ticket printing and easy contamination of ink before it dries, as mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: a ticket flipping mechanism includes a bracket for overall equipment assembly, and both the front and rear ends of the bracket are fastened with flipping components by bolts. The flipping components are used to flip and adjust the tickets.

[0006] Meanwhile, a base is fastened to the center of the end of the support by bolts, and air supply rollers and conveying guide rollers are respectively provided at the left and right ends of the bottom of the base.

[0007] Preferably, the bottom of the bracket is connected to a base via a connecting plate, wherein the surface of the bracket is symmetrically provided with linear sliding grooves along the axis;

[0008] The surface of the base is provided with a mounting cavity and a second mounting groove. The mounting cavity is used in conjunction with the conveying guide roller, while the second mounting groove is used in conjunction with the air supply roller.

[0009] Preferably, the flipping assembly includes two staggered inclined guide rollers, one and two, which are arranged in an "X" shape, with the second inclined guide roller located on one side of the first inclined guide roller.

[0010] Preferably, the inclined guide roller 1 is provided with support plates on both the front and rear sides, and the bottom of the support plate is fastened to the end of the bracket by bolts. The shaft ends of the inclined guide roller 1 and the side guide roller are movably mounted to the surface of the two support plates by bearings.

[0011] Preferably, a side guide roller is provided on one side of the surface of the support plate;

[0012] Meanwhile, upper guide rollers are movably mounted on the opposite ends of the two support plates via bearings, while rear guide rollers are provided on the right side of the support plates.

[0013] Preferably, a push plate is fitted on the surface of both the front and rear shafts of the conveying guide roller, and a push groove is formed on the surface of the push plate.

[0014] The front and rear shafts of the air supply roller are both fitted with push plates two, and the surface of the push plates two is provided with push grooves two. The grooves of push grooves two and push grooves one have the same specifications and are arranged in opposite directions.

[0015] Preferably, the shaft ends of the conveying guide roller and the air supply roller are respectively provided with a drive motor one and a drive motor two, wherein the output end of the drive motor one is connected to the shaft end of the conveying guide roller for driving the conveying guide roller, and the output end of the drive motor two is connected to the shaft end of the air supply roller for driving the air supply roller.

[0016] Preferably, a cleaning component is provided at the bottom of the conveying guide roller, and the bottom of the cleaning component is supported by a mounting platform, wherein a water pump is fastened to the end of the mounting platform by bolts.

[0017] Preferably, the surface of the air supply roller body is provided with air jet holes, and the shaft end of the air supply roller body is movably connected to an air duct through a sealed bearing;

[0018] A hydraulic rod is installed above the bracket, and the output end of the hydraulic rod is connected to a support slide.

[0019] On the other hand, this utility model also provides a printing device, including a ticket flipping mechanism and a printing press one. A printing press two is provided at the output end of the printing press one. The printing press one and the printing press two are used together to print tickets on both sides. At the same time, an auxiliary support slide is provided at the opposite end of the printing press one and the printing press two.

[0020] The present invention provides a ticket flipping mechanism and printing equipment with the following advantages:

[0021] This paper ticket flipping mechanism and printing equipment, after the front side of the ticket is printed on printing press one, the ticket is flipped by a flipping assembly supported by a bracket. Guided by inclined guide roller one, side guide roller, inclined guide roller two, upper guide roller, and rear guide roller, the ticket is smoothly flipped, ready to enter printing press two for back side printing. During this process, the conveyor guide roller and the air supply roller on the base move intermittently up and down; the former is responsible for conveying the ticket, and the latter dries the ink through air jets. Hydraulic rods drive push plates one and two, causing the conveyor guide roller and the air supply roller to move alternately up and down. When the conveyor guide roller moves downward, it enters the cleaning unit for cleaning, ensuring clean contact with the ticket, while the air supply roller rises to provide support, ensuring efficient and high-quality double-sided printing of the ticket. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0024] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0025] Figure 3 This is one of the schematic diagrams of the bill flipping mechanism of this utility model;

[0026] Figure 4 This is the second schematic diagram of the bill flipping mechanism of this utility model;

[0027] Figure 5 This is an exploded view of the support structure of this utility model;

[0028] Figure 6 This is a cross-sectional schematic diagram of the base structure of this utility model;

[0029] Figure 7 This is a three-dimensional exploded view of the structure of the base, conveying guide roller, and air delivery roller of this utility model;

[0030] Figure 8 This is an exploded view of the support and base structure of this utility model;

[0031] Figure 9 This is a schematic diagram of the base, conveying guide roller, air supply roller body, and hydraulic rod structure of this utility model.

[0032] Explanation of markings in the diagram: 100, Printing machine one; 110, Printing machine two; 120, Support; 121, Base; 122, Straight-moving slide; 130, Auxiliary support slide; 200, Base platform; 201, Mounting cavity; 202, Mounting slot two; 300, Support plate; 310, Inclined guide roller one; 320, Side guide roller; 330, Inclined guide roller two; 340, Upper guide roller; 350, Rear guide roller; 400, Conveyor guide roller; 410, Push plate one; 411, Push slide one; 420, Drive motor one; 430, Cleaning component; 431, Mounting platform; 440, Water pump; 500, Air supply roller body; 510, Push plate two; 511, Push slide two; 520, Drive motor two; 530, Air duct; 600, Hydraulic rod; 610, Support slide. Detailed Implementation

[0033] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0034] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0037] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0038] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a ticket flipping mechanism and printing equipment according to this utility model.

[0039] like Figures 1-9 As shown, the present invention provides a ticket flipping mechanism, including a bracket 120 for overall equipment assembly. The bracket 120 is installed on the opposite side of printing press 100 and printing press 210, that is, at the output end of printing press 100 and the output end of printing press 210. The bottom of the bracket 120 is connected to a base 121 through a connecting plate. The surface of the bracket 120 is symmetrically provided with linear sliding grooves 122 along the axis. There are multiple linear sliding grooves 122. In this design, two linear sliding grooves 122 are preferably provided.

[0040] Meanwhile, a base 200 is bolted to the center of the end of the bracket 120. The surface of the base 200 is provided with mounting groove 201 and mounting groove 202. Mounting groove 201 is used in conjunction with the conveying guide roller 400, while mounting groove 202 is used in conjunction with the air supply roller 500. The diameter of mounting groove 201 and mounting groove 202 is larger than the diameter of the conveying guide roller 400 and the air supply roller 500, respectively. The ends of the conveying guide roller 400 and the air supply roller 500 can extend to the upper end of the base 200. The moving air supply roller 500 and the conveying guide roller 400 can assist in the conveying of the documents, and the conveying guide roller 400 can assist in drying the printed documents.

[0041] Both ends of the bracket 120 are fastened with a flipping assembly by bolts. The flipping assembly is used to flip and adjust the ticket. The flipping assembly includes an inclined guide roller 1 310 and an inclined guide roller 2 330 arranged in an alternating manner. The inclined guide roller 1 310 and the inclined guide roller 2 330 are arranged in an "X" shape, with the inclined guide roller 2 330 located on one side of the inclined guide roller 1 310.

[0042] Support plates 300 are provided on both the front and rear sides of the inclined guide roller 310. The bottom of the support plate 300 is fastened to the end of the bracket 120 by bolts. The support plate 300 can assist in supporting the inclined guide roller 310, the side guide roller 320, the inclined guide roller 330 and the upper guide roller 340. The shaft ends of the inclined guide roller 310 and the side guide roller 320 are movably mounted to the surface of the two support plates 300 by bearings.

[0043] A side guide roller 320 is provided on one side of the surface of the support plate 300. The side guide roller 320 is movably connected to the adjacent support plate 300 through a support plate and a bearing. The support plate 300, the support plate and the bearing assist in supporting the side guide roller 320. The support plate is connected to the support plate 300, and the shaft end of the side guide roller 320 is fitted with a bearing. The side guide roller 320 is movably mounted on the support plate through the bearing. In this way, the side guide roller 320 is assembled as a whole.

[0044] Meanwhile, upper guide rollers 340 are movably mounted on the opposite ends of the two support plates 300 via bearings, and a rear guide roller 350 is provided on the right side of the support plate 300. The rear guide roller 350 is movably mounted to the end of the bracket 120, and the rear guide roller 350 adopts the same mounting method as the side guide roller 320.

[0045] As a further optimization of this solution, the shaft ends of the inclined guide roller 310, side guide roller 320, inclined guide roller 330, upper guide roller 340 and rear guide roller 350 can all be equipped with driving components, such as geared motors. Using the driving components, the inclined guide roller 310, side guide roller 320, inclined guide roller 330, upper guide roller 340 and rear guide roller 350 can be driven to rotate, which helps to drive the tickets output by the printing press 100 to be transported outward.

[0046] After printing one side of the ticket on the printing press 100, when the ticket is flipped over, the surface of the ticket comes into contact with the inclined guide roller 1 310, the side guide roller 320, the inclined guide roller 2 330, the upper guide roller 340 and the rear guide roller 350 in sequence. Under the combined action of the above components, the flipping work is completed.

[0047] Specifically, after one end of the ticket passes through the inclined guide roller 310, it is bent and guided on the surface of the inclined guide roller 310, and then guided by the side guide roller 320 to be fed onto the inclined guide roller 330. After being bent and guided again by the inclined guide roller 330, it is fed into the upper guide roller 340. After passing through the upper guide roller 340, it passes through the rear guide roller 350, completing a series of bends and smooth flips.

[0048] At the bottom of the base 200, air supply roller 500 and conveying guide roller 400 are respectively provided at the left and right ends. The conveying guide roller 400 and the air supply roller 500 move back and forth intermittently. The conveying guide roller 400 can assist in guiding and conveying the paper, while the air supply roller 500 can dry the printed paper and prevent ink stains from sticking to the air supply roller 500.

[0049] Push plates 410 are fitted on the surfaces of the front and rear shafts of the conveying guide roller 400. Push grooves 411 are formed on the surface of the push plates 410. The surface of the conveying guide roller 400 is slidably disposed in the inner cavity of the push grooves 411. The shaft end of the conveying guide roller 400 passes through the push grooves 411 and extends into the adjacent linear sliding grooves 122. The linear sliding grooves 122 are used to assist in limiting its movement. When the push plates 410 are pushed to move, the push plates 410 cause the conveying guide roller 400 to move up and down in a reciprocating motion under the combined action of the push grooves 411 and the linear sliding grooves 122.

[0050] Push plates 2 510 are fitted on the front and rear shaft surfaces of the air supply roller body 500. Push grooves 2 511 are opened on the surface of push plates 2 510. Push grooves 2 511 and push grooves 1 411 have the same cavity specifications and are arranged in opposite directions. The surface of the air supply roller body 500 is slidably disposed in the inner cavity of push grooves 2 511. The shaft end of the air supply roller body 500 passes through push grooves 2 511 and extends into the adjacent linear sliding groove 122. The linear sliding groove 122 is used to assist in limiting its movement. When the push plates 2 510 are pushed to move, the push plates 2 510 move the conveying guide roller 400 up and down in a reciprocating motion under the combined action of push grooves 2 511 and linear sliding groove 122.

[0051] Thus, when the hydraulic rod 600 pushes the first push plate 410 and the second push plate 510, it can simultaneously drive the conveying guide roller 400 and the air supply roller 500 to move. Since the slots of the first push groove 411 and the second push groove 511 are set in opposite directions, the conveying guide roller 400 and the air supply roller 500 move up and down alternately. When the conveying guide roller 400 is pushed up, the air supply roller 500 is pushed down simultaneously. Similarly, when the hydraulic rod 600 is used to push the conveying guide roller 400 down in the opposite direction, the air supply roller 500 is pushed up simultaneously.

[0052] The conveyor roller 400 moves downward to enter the cleaning component 430 for cleaning, while the air supply roller 500 moves upward to assist in supporting the end of the document instead of the conveyor roller 400.

[0053] The shaft ends of the conveying guide roller 400 and the air supply roller body 500 are respectively equipped with a drive motor 420 and a drive motor 520. The output end of the drive motor 420 is connected to the shaft end of the conveying guide roller 400 and is used to drive the conveying guide roller 400. The output end of the drive motor 520 is connected to the shaft end of the air supply roller body 500 and is used to drive the air supply roller body 500.

[0054] As a further optimization of this solution, the surfaces of the conveying guide roller 400 and the air supply roller 500 are supported by connecting plates. The surface of the connecting plate and the end of the bracket 120 make sliding contact, thereby using the connecting plate to support the conveying guide roller 400 and the air supply roller 500.

[0055] A cleaning component 430 is provided at the bottom of the conveyor guide roller 400, and the bottom of the cleaning component 430 is supported by a mounting platform 431. The bottom of the mounting platform 431 is fastened to the surface of the base 121 by bolts. A water pump 440 is fastened to the end of the mounting platform 431 by bolts. The output end of the water pump 440 is connected to the inner surface of the cleaning component 430. Thus, the water pump 440 can inject water into the cleaning component 430 to clean the surface of the conveyor guide roller 400 that enters the cleaning component 430. The input end of the water pump 440 is connected to an external pure water source through a pipeline. The bottom of the cleaning component 430 is connected to a drain interface, which can be connected to a pipeline to discharge the water inside the cleaning component 430.

[0056] The cleaning component 430 is made of sponge material, which has water absorption properties and a soft surface. When the conveyor guide roller 400 is moved under force, it can enter the cleaning component 430 and wipe the surface of the conveyor guide roller 400 to clean the dirt on the conveyor guide roller 400.

[0057] Air jet holes are provided on the surface of the air supply roller body 500, and the shaft end of the air supply roller body 500 is movably connected to the air intake pipe 530 through the sealed bearing. The air intake pipe 530 is connected to the air outlet of an external fan, so that gas is sent into the air supply roller body 500 and the gas is ejected through the air jet holes on the air supply roller body 500 to assist in drying the ink on the surface of the ticket in the conveying state, so as to prevent the ink from adhering to the surface of the conveying guide roller 400 and the components in the flipping assembly.

[0058] A hydraulic rod 600 is installed above the bracket 120, and the output end of the hydraulic rod 600 is connected to a support slide 610. The bottom of the support slide 610 slides in contact with the end of the bracket 120, and the end of the support slide 610 is connected to the bottom of the first push plate 410 and the second push plate 510, respectively. Thus, when the output end of the hydraulic rod 600 moves, the first push plate 410 and the second push plate 510 can drive the conveying guide roller 400 and the air supply roller 500 to move linearly.

[0059] like Figures 1-2 As shown, the printing equipment of the present invention, a ticket flipping mechanism, includes a printing press 100 and a printing press 2 110 at the output end of the printing press 100. The printing press 100 and the printing press 2 110 are used together to print tickets on both sides. The printing press 100 is used to print the front side of the ticket. After printing, the flipping component feeds the printed ticket back into the printing press 2 110 for reverse printing. At the same time, an auxiliary support slide 130 is mounted at the opposite end of the printing press 100 and the printing press 2 110 to assist in the transport of the ticket. The auxiliary support slide 130 is mounted on a bracket 120.

[0060] The working principle of a printing equipment with a ticket flipping mechanism: After the front side of the ticket is printed on the printing press 100, the ticket is sent out from the output end of the printing press 100 and enters the flipping assembly supported by the bracket 120 for flipping. The ticket first enters the path between the inclined guide roller 310 and the side guide roller 320. During this process, the surface of the ticket begins to bend and guide. Then the ticket is guided to the inclined guide roller 330. After another bending and guiding process, the ticket continues to move upward. With the assistance of the upper guide roller 340 and the rear guide roller 350, the ticket is finally flipped smoothly, with the reverse side facing up, ready to enter the printing press 110 for back-side printing. During this period, the conveying guide roller 400 and the air supply roller 500 on the base 200 can move up and down intermittently. The conveying guide roller 400 is responsible for conveying the ticket forward, while the air supply roller 500 blows air through the air jet holes on its surface to quickly dry the ink on the freshly printed ticket, preventing ink from contaminating other parts. When the hydraulic rod 600 pushes the support slide 610, the push plate 410 and the push plate 510 respectively drive the conveyor roller 400 and the air supply roller 500 to move up and down alternately. When the conveyor roller 400 moves downwards, it enters the cleaning unit 430, where water supplied by the water pump 440 cleans its surface, ensuring it is clean before each contact with the document. At this time, the air supply roller 500 rises to replace the conveyor roller 400 in providing support for the document. The entire process ensures efficient and stable double-sided printing of the document while maintaining good document quality.

[0061] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A ticket flipping mechanism, characterized in that: It includes a bracket (120) for overall equipment assembly, and both ends of the bracket (120) are fastened with a flipping assembly by bolts. The flipping assembly is used to flip and adjust the ticket. Meanwhile, a base (200) is fastened to the center of the end of the bracket (120) by bolts, and air supply roller (500) and conveying guide roller (400) are respectively provided at the left and right ends of the bottom of the base (200).

2. The ticket flipping mechanism according to claim 1, characterized in that: The bottom of the bracket (120) is connected to the base (121) by a connecting plate, wherein the surface of the bracket (120) is symmetrically provided with linear sliding grooves (122) along the axis; The surface of the base (200) is provided with an installation groove (201) and an installation groove (202). The installation groove (201) is used in conjunction with the conveying guide roller (400), while the installation groove (202) is used in conjunction with the air supply roller (500).

3. The ticket flipping mechanism according to claim 2, characterized in that: The flipping assembly includes two staggered inclined guide rollers, one (310) and two inclined guide rollers (330), which are arranged in an "X" shape, with the two inclined guide rollers (330) located on one side of the inclined guide rollers (310).

4. The ticket flipping mechanism according to claim 3, characterized in that: The inclined guide roller 1 (310) is provided with support plates (300) on both the front and rear sides. The bottom of the support plate (300) is fastened to the end of the bracket (120) by bolts. The shaft ends of the inclined guide roller 1 (310) and the side guide roller (320) are movably mounted to the surface of the two support plates (300) by bearings.

5. The ticket flipping mechanism according to claim 4, characterized in that: A side guide roller (320) is provided on one side of the surface of the support plate (300); Meanwhile, upper guide rollers (340) are movably mounted on the opposite ends of the two support plates (300) via bearings, while rear guide rollers (350) are provided on the right side of the support plates (300).

6. The ticket flipping mechanism according to claim 5, characterized in that: The front and rear shafts of the conveying guide roller (400) are both fitted with push plates (410), and the surface of the push plates (410) is provided with push grooves (411). The front and rear shaft surfaces of the air supply roller body (500) are both fitted with push plate two (510), and the surface of push plate two (510) is provided with push groove two (511). The groove specifications of push groove two (511) and push groove one (411) are the same and are arranged in opposite directions.

7. The ticket flipping mechanism according to claim 6, characterized in that: The shaft ends of the conveying guide roller (400) and the air supply roller (500) are respectively provided with a drive motor one (420) and a drive motor two (520). The output end of the drive motor one (420) is connected to the shaft end of the conveying guide roller (400) to drive the conveying guide roller (400), while the output end of the drive motor two (520) is connected to the shaft end of the air supply roller (500) to drive the air supply roller (500).

8. The ticket flipping mechanism according to claim 7, characterized in that: The bottom of the conveying guide roller (400) is provided with a cleaning component (430), and the bottom of the cleaning component (430) is supported by a mounting platform (431), wherein a water pump (440) is fastened to the end of the mounting platform (431) by bolts.

9. The bill flipping mechanism according to claim 8, characterized in that: The surface of the air supply roller (500) is provided with air jet holes, and the shaft end of the air supply roller (500) is movably connected to the air intake pipe (530) through a sealed bearing; Meanwhile, a hydraulic rod (600) is installed above the bracket (120), and the output end of the hydraulic rod (600) is connected to a support slide (610).

10. A printing apparatus comprising the document flipping mechanism according to any one of claims 1-9, characterized in that: It includes a printing press one (100), and a printing press two (110) is provided at the output end of the printing press one (100). The printing press one (100) and the printing press two (110) are used together to print tickets on both sides. At the same time, an auxiliary support slide (130) is provided at the opposite end of the printing press one (100) and the printing press two (110).

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