Single printing medium vertical conveying device and high-speed printer

Abstract

The utility model relates to the technical field of printers, and particularly discloses a single printing medium vertical conveying device and a high-speed printer. The vertical conveying device comprises a vertical conveying mechanism and a wind power mechanism; the vertical conveying mechanism is arranged at the downstream position of the conveying direction of the upstream flat conveying mechanism connected with the vertical conveying mechanism and used for vertically conveying the conveyed printing media upwards / downwards, the vertical conveying mechanism is provided with a conveying belt which is in circulating transmission in the set conveying direction, and the conveying belt is provided with a conveying working face in the circulating transmission process; the wind power mechanism can generate adsorption force on the conveying working face of the conveying belt in the conveying stroke, and the acting area of the adsorption force is within the height range of the vertical conveying mechanism. According to the utility model, while the printing medium is reliably and vertically conveyed, the compact design structure of the applied printer is facilitated, the risk that the printing medium is blocked in the vertical conveying process can be greatly reduced, and the conveying efficiency of the printing medium is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, specifically a vertical conveying device for single-sheet printing media, and a high-speed printer including the vertical conveying device. Background Technology

[0002] The printer design structure includes a feeding mechanism (paper feeding mechanism) for providing printing media and a receiving mechanism (paper receiving mechanism) for collecting printing media. The feeding mechanism and the receiving mechanism form a sequential conveying path for a single sheet of printing media from supply to collection. Printing mechanisms are arranged along the sequential conveying path to print the corresponding graphic information of the currently conveyed printing media.

[0003] To achieve a compact design and reduce the footprint of printers, the sequential transport path typically utilizes space efficiently along the printer's height. This is particularly evident in large commercial or industrial high-speed printers (i.e., sheet-fed inkjet printers). The sequential transport path is usually a looping structure along the height, causing the printing media to travel in a loop from bottom to top or top to bottom (bottom-up looping is most common). Therefore, the sequential transport path involves the height-shifting transport (or climbing transport) of individual sheets of printing media during the looping transport in the height direction.

[0004] In the publicly available prior art, the height conversion and conveying of a single sheet of printing media is mainly achieved by multiple sets of paper feed rollers spaced apart along the conveying path (e.g., the technology disclosed in Chinese patent document entitled "A Double-Sided Inkjet Printing Device," publication number CN 109968830 A, publication date July 5, 2019), or by a conveying channel set along the conveying path combined with multiple sets of paper feed rollers spaced apart (e.g., the technology disclosed in Chinese patent document entitled "A Double-Sided Printer," publication number CN119689814 A, publication date March 25, 2025). However, when using paper feed rollers to convey a single sheet of printing media for height conversion, it is difficult to create a sharp vertical conveying change at the downstream end of the horizontal conveying mechanism. The sharper the change, the easier it is to cause conveying blockage and interruption of the printing media. A gentler turning conveying is required. Therefore, a common structural form is to arrange multiple sets of paper feed drive rollers in the height direction with an arc-shaped trajectory spacing of approximately C-shape. That is, the printed media being transported is transported in the height direction with a C-shaped trajectory for height conversion, such as the technologies disclosed in CN 109968830 A and CN 119689814 A.

[0005] It is obvious that the above-mentioned sequential conveying path, which uses a C-shaped trajectory for height conversion in the vertical direction, requires a large layout space, which is not conducive to the compact structure of the printer. Moreover, since the paper feed rollers convey the incoming printing media through a squeezing method of rotating friction between the rollers, the printing media is easily deformed during rotational friction. This increases the risk of conveying jams, especially during high-speed conveying. In particular, already printed, thin paper with high ink coverage is prone to jamming, making it unsuitable for high-speed conveying (high-speed conveying usually refers to 60 sheets / minute or more). Secondly, it affects the flatness of the conveyed printing media, which is not conducive to improving the printer's printing quality.

[0006] In summary, to make the printer more compact, improve the efficiency of printing media delivery and print quality, it is necessary to optimize the height conversion delivery structure for conveying single sheets of printing media in the vertical direction. This optimization is even more necessary for commercial or industrial high-speed printers (sheet-fed inkjet printers). Utility Model Content

[0007] The technical objective of this utility model is to address the unique characteristic of the sequential transport path of the aforementioned printer being formed by a loop structure in the vertical direction, as well as the shortcomings of the existing technology, by providing a single-sheet vertical transport device for printing media that is conducive to both printer structure compactness and improved printing media transport efficiency, while reducing the risk of transport jamming, and a high-speed printer including the vertical transport device.

[0008] The technical objective of this utility model is achieved through the following technical solution: a vertical conveying device for single-sheet printing media, including a vertical conveying mechanism;

[0009] The vertical conveying mechanism is arranged downstream of the upstream horizontal conveying mechanism in the conveying direction, and is used to vertically convey the printing medium from the upstream horizontal conveying mechanism upwards / downwards.

[0010] The vertical conveying mechanism has a conveyor belt that circulates along a set conveying direction. During the circulating transmission, the conveyor belt is close to the flat surface of the connected upstream horizontal conveying mechanism, forming a conveying working surface for the printing medium.

[0011] The vertical conveying device also includes a wind-powered mechanism, which can generate an adsorption force on the conveying working surface of the conveyor belt during the conveying stroke. The area of ​​action of the adsorption force generated by the wind-powered mechanism on the conveying working surface of the conveyor belt is within the height range of the vertical conveying mechanism.

[0012] The aforementioned technical measures address the unique characteristic of the printer's sequential transport path, which is formed by a looping structure in the vertical direction. Based on a vertical transport mechanism driven by a conveyor belt, a pneumatic mechanism generates an adsorption force on the transport working surface of the vertical transport mechanism, thus forming a vertical transport device connected downstream of the upstream horizontal transport mechanism and arranged relatively vertically. When the printing media from the upstream horizontal transport mechanism is guided into the vertical transport mechanism, it is adsorbed by the adsorption force generated by the pneumatic mechanism on the transport working surface. As the conveyor belt of the vertical transport mechanism circulates, the printing media is vertically transported downstream, achieving height-change transport of the printing media within the sequential transport path.

[0013] The height conversion conveying path constructed using the aforementioned technical measures is a straight structure, eliminating the need for a gentle C-shaped loop. This allows for vertical, obtuse-angle, or even acute-angle assembly relationships with the upstream horizontal conveying mechanism, depending on the arrangement of other structural components (of course, the included angle should not be too small, typically above 70°), offering high assembly flexibility. In layouts without specific requirements, a vertical assembly relationship can usually be formed with the upstream horizontal conveying mechanism, ensuring reliable vertical transport of the printing media while facilitating a more compact printer design.

[0014] The vertical conveying device described above uses the suction force generated by the wind mechanism at the conveying working surface to temporarily adsorb and fix the incoming printing media. The vertical conveying mechanism with a conveyor belt drive structure transports the attached and fixed printing media. During the process, the printing media is not subjected to compression and extrusion due to friction between rollers, thus greatly maintaining the structural prototype of the transported printing media and virtually eliminating the possibility of deformation due to compression. This significantly reduces the risk of the printing media getting stuck during vertical transport and greatly improves the transport efficiency of the printing media, effectively meeting the technical requirements of high-speed printers for high-efficiency transport and high-quality printing of printing media.

[0015] Furthermore, the vertical conveying device uses the side of the input printing medium opposite to the side that has just finished printing as the contact conveying surface. During the vertical conveying process, there is virtually no friction on the surface that has just finished printing, which helps to ensure the integrity and clarity of the printed marks. At the same time, during the vertical conveying process, the air force mechanism's air adsorption effect on the printing medium helps to accelerate the drying of the printed marks on the printing medium, which in turn helps to ensure the integrity and clarity of the printed marks when the printing medium is rubbed downstream.

[0016] As one of the preferred technical solutions, the vertical conveying mechanism has an upper shaft arranged on the upper side of the frame, a lower shaft arranged on the lower side, and a conveyor belt that is fitted between the upper shaft and the lower shaft and can be circulated.

[0017] The upper shaft and the lower shaft are connected to the drive assembly and rotate under the drive of the drive assembly, thereby driving the conveyor belt to circulate.

[0018] The conveyor belt has several wind-driven adsorption holes that extend through the thickness direction.

[0019] The wind power mechanism at least arranges the air inlets within the circulating transmission space of the conveyor belt.

[0020] The above technical measures effectively combine the vertical conveying mechanism of the conveyor belt drive with the wind power mechanism. The wind power mechanism generates an adsorption force on the conveying working surface of the conveyor belt that can adsorb the printing medium, ensuring that the vertical conveying mechanism of the conveyor belt drive can reliably convey the incoming printing medium vertically.

[0021] As one preferred technical solution, the vertical conveyor mechanism comprises multiple independent conveyor belts, which are arranged side-by-side between the upper and lower shafts along their axial direction. This technique, while meeting the requirements for belt conveying of the printing media, uses multiple narrow-width conveyor belts, effectively reducing the purchase cost of the conveyor belts and thus lowering manufacturing costs compared to a large-width integral conveyor belt.

[0022] Furthermore, the multiple conveyor belts of the vertical conveying mechanism are arranged side by side at intervals along the axial direction of the upper shaft one / lower shaft one;

[0023] The vertical conveying mechanism also has a support plate mounted on the frame and passing through the conveyor belt circulation transmission space. One side surface of the support plate is arranged close to the conveying working surface of the conveyor belt, and cooperates with the conveying working surface of the conveyor belt to flatten and support the printing medium being conveyed.

[0024] Furthermore, the bearing plate has an air duct running through the thickness direction in the area corresponding to each conveyor belt, and the air duct on the bearing plate is blocked by the corresponding conveyor belt.

[0025] The air inlets of the wind power mechanism are multiple sets corresponding to each conveyor belt. Each set of air inlets is arranged in the air duct of the bearing plate and is located on the side of the bearing plate opposite to the conveying working surface.

[0026] The vertical conveying mechanism of the above-mentioned technical measures, on the one hand, reduces the number of small-width conveyor belts to lower manufacturing costs while meeting the belt conveying function of the printing media; on the other hand, it fills the gaps caused by the spacing of the conveyor belts with a bearing plate, so that the conveying working surface of the conveyor belt forms a bearing surface that is conducive to the flat conveying of the printing media, avoiding the deformation of the printing media due to the adsorption force of the wind mechanism under the condition of the spacing of the conveyor belts, and greatly reducing the conveying resistance; on the other hand, the adsorption force of the wind mechanism acting on the conveyor belt is relatively concentrated along the conveying direction to ensure that the adsorbed printing media is stably attached to the conveyor belt.

[0027] Furthermore, on the upper shaft of the vertical conveying mechanism, multiple sets of upper pulleys are arranged along the axial spacing;

[0028] And / or, on the lower shaft of the vertical conveying mechanism, multiple sets of lower pulleys are arranged along the axial spacing, and each lower pulley on the lower shaft corresponds to each upper pulley on the upper shaft.

[0029] Each conveyor belt is fitted between the upper shaft and the lower shaft via a corresponding pulley;

[0030] The pulley is a shuttle-shaped variable diameter structure with a central diameter that is larger than the diameters at both ends. The conveyor belt fitted on the pulley forms a surface contact transmission relationship with the pulley through the inner ring wall.

[0031] The above-mentioned technical measures are based on the spacing arrangement structure of the narrow-width conveyor belt. The narrow-width conveyor belt is spread out and assembled by pulleys with a similar shuttle-shaped variable diameter structure on the corresponding shaft. The pulleys position the conveyor belt in the axial direction of the corresponding shaft to prevent axial displacement. This technical effect is even better with the coordinated cooperation of the upper and lower pulleys, which can effectively improve the stability of the vertical conveying mechanism.

[0032] Furthermore, the wind power mechanism has multiple small fans, which are divided into multiple groups corresponding to the air ducts on the support plate, with each group consisting of multiple fans.

[0033] Multiple small fans in each group are arranged vertically side by side along the corresponding air duct of the support plate and are mounted on the support plate. They are located in the circulation transmission space of the conveyor belt, and the air inlet of each small fan faces the conveyor belt at the corresponding air duct.

[0034] The wind power mechanism of the above-mentioned technical measures consists of multiple small fans, which are assembled on the bearing plate corresponding to each conveyor belt of the vertical conveying mechanism. While ensuring the reliable generation of adsorption force, it can make the molding structure of the entire vertical conveying device more compact and can also effectively reduce the noise of the wind power mechanism during operation.

[0035] As one of the preferred technical solutions, corresponding to the sequential conveying path of the printing medium, at the upstream end of the conveying working surface of the vertical conveying mechanism, a first guide plate is arranged to connect with the upstream horizontal conveying mechanism and to convert the conveying direction of the printing medium traveling head output by the upstream horizontal conveying mechanism. The conveying path length of the first guide plate is less than the length of the conveyed printing medium in the conveying direction.

[0036] At the downstream end of the conveying working surface of the vertical conveying mechanism, a second guide plate is arranged to connect with the downstream horizontal conveying mechanism and to change the conveying direction of the printing medium head output by the vertical conveying mechanism. The conveying path length of the second guide plate is less than the length of the conveyed printing medium in the conveying direction.

[0037] The aforementioned technical measures connect the vertical conveying mechanism to the upstream horizontal conveying mechanism via a first guide plate. This first guide plate smoothly guides the printing media feed head (i.e., the paper head) output from the upstream horizontal conveying mechanism, ensuring that the printing media feed head smoothly enters the vertical conveying mechanism and thus avoiding jamming or deformation at the turning point. With the first guide plate transitioning through these technical measures, regardless of whether the vertical conveying mechanism and the upstream horizontal conveying mechanism are assembled in a perpendicular, obtuse, or acute angle relationship, the printing media output from the upstream horizontal conveying mechanism can reliably enter the vertical conveying mechanism to achieve vertical transmission (of course, the included angle of the acute angle should not be too small). This also improves the flexibility of the assembly angle between the vertical conveying mechanism and the upstream horizontal conveying mechanism.

[0038] The above-mentioned technical measures connect the vertical conveying mechanism with the downstream horizontal conveying mechanism through the second guide plate, so that the second guide plate smoothly turns and guides the printing medium traveling head output from the vertical conveying mechanism, thereby ensuring that the printing medium traveling head smoothly enters the downstream horizontal conveying mechanism.

[0039] Furthermore, the sequential conveying path of the printing medium at the vertical conveying mechanism is from bottom to top;

[0040] Correspondingly, the upstream end of the conveying working surface of the first guide plate is connected to the tail end of the conveying working surface of the upstream horizontal conveying mechanism and is lower than the conveying working surface of the upstream horizontal conveying mechanism; the downstream end of the conveying working surface of the first guide plate is connected to the area of ​​the adsorption force generated by the conveying working surface of the vertical conveying mechanism.

[0041] The upstream end of the conveying working surface of the second guide plate is connected to the downstream end of the conveying working surface of the vertical conveying mechanism at a position structure that is behind the conveying working surface of the conveyor belt; the downstream end of the conveying working surface of the second guide plate is connected to the inlet of the downstream horizontal conveying mechanism.

[0042] The cooperation between the first guide plate and the upstream horizontal conveying mechanism in the aforementioned technical measures, for a bottom-up sequential conveying path of the printing media, ensures that the printing media travel head output by the upstream horizontal conveying mechanism reliably enters the first guide plate, avoiding conveying obstruction during entry. The cooperation between the first guide plate and the vertical conveying mechanism in the aforementioned technical measures, for a bottom-up sequential conveying path of the printing media, ensures that the printing media travel head output from the first guide plate is attracted and positioned at the vertical conveying mechanism. This attraction and positioning is strengthened with continuous conveying, ensuring the smooth transition of the printing media between the upstream horizontal conveying mechanism and the vertical conveying mechanism.

[0043] The aforementioned technical measures, specifically the coordination between the second guide plate and the vertical conveying mechanism, ensure reliable turning guidance of the printing media's travel head for an upward sequential conveying path. This also effectively prevents the printing media's travel head from jamming at the second guide plate when exiting the vertical conveying mechanism. A key feature is the structure where the second guide plate is fixed to the support plate of the vertical conveying mechanism, with its upstream end flush with the support plate's conveying working surface. Specifically, the second guide plate is fixed using the support plate as a reference, ensuring its upstream end smoothly connects to the conveying working surface of the conveyor belt. This reliably ensures the second guide plate's turning guidance of the printing media's travel head and reliably prevents jamming at the second guide plate when exiting the vertical conveying mechanism.

[0044] Furthermore, the vertical conveying device also has a guide transmission mechanism arranged on the conveying working surface of the vertical conveying mechanism and along the height direction of the vertical conveying mechanism;

[0045] The guide transmission mechanism has a lower shaft two that first engages with the printing medium being transported, an upper shaft two that then engages with the printing medium being transported, and a medium guide belt that is fitted between the lower shaft two and the upper shaft two and circulates through the transmission.

[0046] During the cyclic transmission process, the media guide belt and / or the lower shaft II, together with the first guide plate, form a channel that allows the currently conveyed printing media to be input.

[0047] During the cyclic transmission process, the media guide belt and / or the upper shaft, together with the vertical conveying mechanism and / or the second guide plate, form a channel that allows the currently conveyed printing media to be output.

[0048] The aforementioned technical measures address the unique top-down sequential transport path of the printing media. Through the cooperation of a guiding transmission mechanism, a vertical conveying mechanism, and corresponding guide plates, the printing media entering the vertically upward transport is guided and aligned. This prevents the printing media from turning around or detaching from the vertical conveying mechanism's suction force during the upward transport process, improving the reliability of the vertical upward transport. This is particularly effective when the printing media is damp or has high-coverage printing marks, as the rigidity of the printing media decreases and its flexibility increases. Compared to vertical conveying devices without a guiding transmission mechanism, this method can prevent the printing media from falling, turning around, or detaching from suction force during vertical upward transport with relatively low wind speed. This effectively reduces the noise of the wind-powered mechanism and saves energy.

[0049] Furthermore, the conveying path cross-section of the first guide plate has a smooth arc-shaped structure;

[0050] Furthermore, the arc-shaped structure of the first guide plate matches the arc-shaped profile of the lower shaft of the guide transmission mechanism.

[0051] The above-mentioned technical measures enable the first guide plate upstream of the vertical conveying mechanism to cooperate with the lower shaft of the guide transmission mechanism to form an arc-shaped guide channel. Under the condition that the lower shaft and the first guide plate do not produce frictional contact, the incoming printing medium is reliably guided and conveyed. While satisfying the guidance and conveying, the friction and pressure of the lower shaft on the incoming printing medium and the printed surface are reduced, so as to ensure the integrity and clarity of the printed mark.

[0052] Furthermore, the upper shaft of the guide transmission mechanism, during the cyclic transmission process, cooperates with the conveyor belt of the vertical conveying mechanism to perform frictional conveying of the conveyed printing medium;

[0053] The friction conveying area of ​​the upper shaft two is the area where the adsorption force generated by the conveying working surface of the vertical conveying mechanism is connected at the top side.

[0054] The aforementioned technical measures address the unique characteristic of printing media bending and detaching from the suction of the pneumatic mechanism after being guided by the second guide plate when output from the vertical conveyor mechanism. This is particularly relevant when the upper shaft of the vertical conveyor mechanism is slightly lower than the downstream horizontal conveyor mechanism due to interference from its arrangement, limiting the effective area of ​​the pneumatic mechanism on the conveyor belt's working surface. Therefore, the upper shaft of the guide transmission mechanism forms a friction-fitting guide roller at the downstream end of the vertical conveyor mechanism. This guide roller, in conjunction with the conveyor belt, performs frictional conveying, effectively connecting with the suction conveying of the conveyor belt. This ensures that the printing media, during its output from the vertical conveyor mechanism, is reliably conveyed by friction and continues forward smoothly into the downstream horizontal conveyor mechanism. Of course, to prevent the media guide belt fitted on the upper shaft from causing frictional compression of the conveyed printing media when the upper shaft contacts the friction-fitting vertical conveyor mechanism, the media guide belt should form a guide groove at the upper shaft to fit snugly. The media guide belt fitted into place at the upper shaft essentially keeps the wall surface of the upper shaft flat axially.

[0055] Alternatively, as an alternative to the guide transmission mechanism structure, corresponding to the first guide plate, a fourth guide plate is arranged at intervals on one side of the conveying working surface of the first guide plate, and the fourth guide plate and the first guide plate form a guide channel for the printing medium to enter from the upstream horizontal conveying mechanism.

[0056] Corresponding to the second guide plate, a third guide plate is arranged at intervals on one side of the conveying working surface of the second guide plate. The third guide plate and the second guide plate form a guide channel for the printing medium to enter from the vertical conveying mechanism.

[0057] The aforementioned technical measures address the unique top-down sequential transport path of the printing media. The fourth guide plate, in conjunction with the first guide plate, guides and straightens the printing media entering the vertically upward transport path. This prevents the printing media from turning around or escaping the suction force of the vertical transport mechanism during the upward transport process, improving the reliability of the vertical upward transport of the printing media. This is particularly effective when the printing media is damp or has high-coverage printing marks, as the rigidity of the printing media decreases and its flexibility increases. Ideally, the downstream end of the fourth guide plate should be higher than the downstream end of the first guide plate vertically, ensuring that the guided printing media head is reliably attracted by the suction force of the vertical transport mechanism within the guide channel and then exits the guide channel.

[0058] The above-mentioned technical measures address the risk of the printing medium bending and detaching from the suction of the wind mechanism when it is output from the vertical conveying mechanism, which may cause it to fall and turn around. Therefore, a third guide plate is used to straighten and guide it in its direction of travel, so as to ensure that the printing medium smoothly enters the downstream horizontal conveying mechanism when it is output from the vertical conveying mechanism.

[0059] Furthermore, at the feed inlet of the guide channel between the second guide plate and the third guide plate, guide rollers are arranged that rotate along the set conveying direction and cooperate with the conveyor belt to rub and convey the printing medium that is being conveyed.

[0060] The friction conveying area of ​​the guide roller is the area where the adsorption force generated by the conveying working surface of the vertical conveying mechanism is connected at the top side.

[0061] The above technical measures are based on the cooperative structure of the second guide plate and the third guide plate. They address the unique characteristic of the printing medium being bent and detached from the suction of the wind mechanism when it is output from bottom to top in the vertical conveying mechanism. In particular, under the working condition that the upper shaft of the vertical conveying mechanism is slightly lower than the downstream horizontal conveying mechanism due to the interference of the arrangement position, the effective area of ​​the wind mechanism on the conveying working surface of the conveyor belt is limited. Therefore, the guide roller cooperates with the conveyor belt to carry out frictional conveying, so as to effectively connect the suction conveying of the conveyor belt and ensure that the printing medium is reliably carried forward by friction during the output of the vertical conveying mechanism, so as to smoothly enter the downstream horizontal conveying mechanism.

[0062] A high-speed printer has a frame and a feeding mechanism and a receiving mechanism arranged on the frame;

[0063] On the frame between the feeding mechanism and the receiving mechanism, a sequential conveying path for a single sheet of printing media is formed from supply to receipt;

[0064] The sequential conveying path is equipped with printing mechanisms that print corresponding graphic and text information on the currently conveyed printing medium.

[0065] The sequential conveying path has at least a first horizontal conveying section, a first vertical conveying section and a second horizontal conveying section connected in sequence in the height direction of the frame, with the second horizontal conveying section arranged above the first horizontal conveying section.

[0066] Each conveying section is equipped with at least one conveying mechanism for conveying a single sheet of printing media in a set direction, and the conveying mechanism on the first vertical conveying section is the structure of the aforementioned vertical conveying device.

[0067] The high-speed printer with the above-mentioned technical measures has a sequential transport path that loops around in the vertical direction. This inevitably involves the height conversion transport of the printing media. The height conversion transport adopts the above-mentioned vertical transport device, thus having the technical advantages of the above-mentioned vertical transport device, including being conducive to the overall compact structure, improving the printing media transport efficiency, and reducing the risk of printing media transport jamming.

[0068] As one of the preferred technical solutions, the sequential conveying path further includes a second vertical conveying section that is sequentially connected to the second horizontal conveying section, and a third horizontal conveying section that is sequentially connected to the second vertical conveying section, wherein the third horizontal conveying section is arranged above the second horizontal conveying section.

[0069] The second vertical conveying section and the third horizontal conveying section are each equipped with a conveying mechanism for conveying a single sheet of printing media in a set direction, and the conveying mechanism on the second vertical conveying section is the structure of the aforementioned vertical conveying device.

[0070] The high-speed printer employing the aforementioned technical measures utilizes a vertical conveying device to form an S-shaped sequential conveying path that loops around in the vertical direction. While possessing the advantages of the aforementioned vertical conveying device, the feeding and receiving mechanisms along the S-shaped sequential conveying path are located at both ends of the frame's length. This effectively reduces spatial interference between the feeding and receiving mechanisms, facilitating the supply and collection of printing media to larger stacks and thus reducing the frequency of manual intervention. Furthermore, it expands the manual operating space for manual feeding / unloading operations. The S-shaped sequential conveying path reduces structural space requirements in the vertical direction of the frame, decreasing the length requirements of the frame structure and thus reducing the overall length and footprint of the printer. The smaller floor area reduces the technical requirements for transportation and installation space, such as facilitating elevator transport. The S-shaped, sequential conveying path allows the printed media to naturally flip over in sequence from supply to receipt, creating favorable conditions for double-sided printing without the need for a flipping mechanism. In other words, without the intervention of a flipping mechanism, the S-shaped, sequential conveying path, combined with two sets of printing mechanisms arranged vertically, can achieve double-sided printing of the conveyed media according to the set printing task. This eliminates the need for a high-frequency flipping mechanism and avoids the need for a large conveying distance between the sequentially conveyed printed media, thus improving the printer's efficiency and further reducing the risk of jamming of the conveyed printed media.

[0071] Furthermore, the high-speed printer has two sets of printing mechanisms arranged on a sequential conveying path;

[0072] The first printing mechanism is arranged on the first flat conveying section of the sequential conveying path;

[0073] The second printing mechanism is arranged on the second flat conveying section of the sequential conveying path;

[0074] The first printing mechanism and / or the second printing mechanism on the sequential conveying path print graphic information on the corresponding side of the current single printing medium being conveyed.

[0075] The above-mentioned technical measures are designed for the special characteristics of commercial or industrial high-speed printers (sheet-fed inkjet printers). Two sets of printing mechanisms are arranged vertically on the S-shaped sequential transport path. This allows for double-sided printing of the printing media according to the set printing task during the S-shaped transport of the printing media, eliminating the need to add a paper flipping mechanism to the sequential transport path. While satisfying the double-sided printing function, the sequential transport path structure is simple and the transport path is clear, which can effectively improve the printer's working efficiency and effectively reduce the risk of jamming of the transported printing media.

[0076] Furthermore, corresponding to the set conveying direction of the printing medium on the sequential conveying path, a first correction mechanism is provided upstream of the first printing mechanism, arranged on the first flat conveying section, for correcting the deviation of the conveyed single printing medium.

[0077] And / or, upstream of the second printing mechanism, a second correction mechanism is provided, arranged on the second flat conveying section, for correcting the deviation of the conveyed single printing medium.

[0078] The above technical measures are designed for the special characteristics of high-speed printers that feed paper in a paper stacking manner. In order to ensure the printing accuracy of the sequentially fed printing media, a correction mechanism is set up upstream of the corresponding printing mechanism. The correction mechanism uses the positioning reference of the corresponding printing mechanism as a reference to correct the feeding position of the printing media, so as to ensure that the sequentially fed printing media entering the corresponding printing mechanism are kept at the same positioning reference, thereby improving the printing quality.

[0079] Furthermore, the feeding mechanism of the high-speed printer is connected to the upstream end of the first flat conveying section, forming a bottom-up sequential conveying path for the printing medium within the high-speed printer. This technical measure, based on the aforementioned S-shaped loop structure and sequential conveying path, effectively expands the manual operation space during feeding / receiving, facilitating manual feeding / unloading operations.

[0080] The beneficial technical effects of this utility model are as follows: The above-mentioned technical measures address the unique characteristic of the sequential transport path of printers, especially commercial or industrial high-speed printers (sheet-fed inkjet printers), which is formed by a loop structure in the vertical direction. Based on a vertical transport mechanism driven by a conveyor belt, a pneumatic mechanism generates adsorption force on the transport working surface of the vertical transport mechanism, thus forming a vertical transport device connected downstream of the upstream horizontal transport mechanism and arranged relatively vertically. The height conversion transport path formed by the above-mentioned technical measures is a straight structure, which reliably achieves vertical transport of the printing media while facilitating a more compact design structure for the applied printer. Simultaneously, the vertical transport mechanism of the above-mentioned technical measures ensures that the transported printing media largely maintains its structural prototype, virtually eliminating the possibility of deformation due to compression during transport. This significantly reduces the risk of the printing media being blocked during vertical transport and greatly improves the transport efficiency of the printing media. It effectively meets the technical requirements of high-speed printers for high-efficiency transport and high-quality printing of the printing media, and also helps ensure the integrity and clarity of the printed marks.

[0081] This high-speed printer, based on its vertical conveying device, features a sequential conveying path that loops around the vertical direction, particularly an S-shaped sequential conveying path. This not only provides the technical advantages of the vertical conveying device but also, because the feeding and receiving mechanisms are located at opposite ends of the frame's length, effectively reducing spatial interference and expanding the manual operation space, the S-shaped sequential conveying path reduces structural space requirements in the frame's height direction, thus minimizing overall length and footprint. Furthermore, the S-shaped sequential conveying path allows the printed media to naturally flip during the supply-to-receive process, improving printer efficiency and reducing the risk of jamming. Attached Figure Description

[0082] Figure 1 This is a schematic diagram of the vertical conveying device of this utility model.

[0083] Figure 2 for Figure 1 A magnified view of a specific area (i.e., the area where the second guide plate is located).

[0084] Figure 3 for Figure 1 Enlarged view of two specific areas (i.e., the area where the first guide plate is located).

[0085] Figure 4 for Figure 1 The diagram shows the three-dimensional relationship between the vertical conveying mechanism and the lower horizontal conveying mechanism.

[0086] Figure 5 for Figure 1 The diagram shows a perspective view of the structure from the back side of the vertical conveying mechanism (opposite to the conveying working surface) (with the guide transmission mechanism removed).

[0087] Figure 6 for Figure 1 The diagram shows a partial planar structure of the vertical conveying mechanism at the conveying working surface.

[0088] Figure 7 This is a schematic diagram of the structure of a high-speed printer according to the present invention.

[0089] Figure 8 for Figure 7 A three-dimensional image.

[0090] Figure 9 This is another structural schematic diagram of the vertical conveying device of this utility model (another structural schematic diagram of a partial plane of the vertical conveying mechanism at the conveying working surface).

[0091] Figure 10 This is a schematic diagram of the third structure of the vertical conveying device of this utility model.

[0092] Figure 11 This is a schematic diagram of the fourth structure of the vertical conveying device of this utility model.

[0093] The symbols in the diagram mean: 1—Vertical conveying mechanism; 11—Bearing plate; 12—Upper shaft one; 13—Upper pulley; 14—Lower shaft one; 15—Lower pulley; 16—Conveyor belt; 17—Conveying working surface; 18—First guide plate; 19—Second guide plate; 110—Third guide plate; 111—Guide channel; 112—Wind-driven adsorption hole;

[0094] 2—Wind power mechanism;

[0095] 3—Upper side horizontal conveying mechanism;

[0096] 4—Lower side horizontal conveying mechanism;

[0097] 5—Rack;

[0098] 6—Material supply mechanism;

[0099] 7—Receiving mechanism;

[0100] 8—Guide transmission mechanism; 81—Upper shaft two; 82—Lower shaft two; 83—Medium guide belt;

[0101] 9—Guide roller;

[0102] A—First horizontal conveying section; A1—First correction mechanism; A2—First printing mechanism;

[0103] B—First vertical transmission section;

[0104] C—Second horizontal conveying section; C1—Second correction mechanism; C2—Second printing mechanism;

[0105] D—Second vertical transmission section;

[0106] E—Third horizontal transmission section;

[0107] F—Material feeding and conveying section. Detailed Implementation

[0108] This utility model relates to the field of printer technology, specifically a vertical conveying device for single-sheet printing media, and a high-speed printer including the vertical conveying device. The main technical solution of this utility model will be described in detail below with reference to several embodiments. Embodiment 1 is illustrated in conjunction with the accompanying drawings—that is… Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The technical solution of this utility model is clearly and thoroughly explained. Example 2 is illustrated in conjunction with the accompanying drawings. Figure 9 The technical solution of this utility model is clearly and thoroughly explained. Example 3 is illustrated in conjunction with the accompanying drawings. Figure 10 The technical solution of this utility model is clearly and thoroughly explained. Example 4 is illustrated in conjunction with the accompanying drawings. Figure 11 The technical solution of this utility model is clearly and thoroughly explained. Although other embodiments are not shown in separate drawings, their main structures can still be referred to the drawings of Embodiment 1, Embodiment 2, Embodiment 3 or Embodiment 4.

[0109] It is important to note that:

[0110] 1. The accompanying drawings of this utility model are schematic, and unnecessary details have been simplified in order to clarify the technical purpose of this utility model, so as to avoid obscuring the technical solution contributed by this utility model to the prior art.

[0111] 2. The printing media applicable to the high-speed printer of this utility model are usually single flat sheets of paper, but do not exclude single flat sheets of film and other printable media, that is, any single flat printable media is applicable; as for folded paper, thick plate media, etc., they are not applicable to the high-speed printer of this utility model, that is, the printing media of the high-speed printer of this utility model do not include these.

[0112] 3. The terms "approximately" and "basically" used in the following text regarding quantity or fit relationships mean that reasonable assembly and processing errors are allowed within the industry, and do not literally describe absolute quantities or fit relationships.

[0113] Example 1

[0114] See Figure 7 and Figure 8 As shown, the high-speed printer of this invention is a commercial or industrial high-speed continuous printer (i.e., a sheet-fed inkjet printer, only for stacked printing media, not roll-fed printing media). It includes a frame 5 and a feeding mechanism 6 (paper feeding mechanism) and a receiving mechanism 7 (paper receiving mechanism) arranged on the frame 5. Taking the length direction of the frame 5 as a reference, the feeding mechanism 6 and the receiving mechanism 7 are arranged at the left and right ends of the frame 5, respectively. Between the feeding mechanism 6 and the receiving mechanism 7, a sequential conveying path for single sheets of printing media in stacked printing media is formed on the frame 5 from supply to collection.

[0115] The feeding mechanism 6 is used to place and separate stacked printing media (e.g., stacked paper) and transport them sheet by sheet. In this embodiment, to achieve continuous delivery of a large amount of printing media and reduce interruptions and downtime due to lack of printing media during printing, the feeding mechanism 6 is configured in two redundant sets. These two sets of feeding mechanisms share the same feeding bracket and are arranged in a high-low layer on the common feeding bracket.

[0116] Specifically, the feeding mechanism is located below the feeding mechanism 2 and is used to sequentially connect with the upstream end of the sequential conveying path - namely, the upstream end of the first flat conveying section A described below.

[0117] The feeding mechanism 1 includes a feeding bracket and a feeding platform 1 arranged on the feeding bracket for placing stacked printing media. The height of the feeding platform 1 on the feeding bracket is adjustable via a linear sliding structure that allows it to rise and fall. Specifically, the feeding platform 1 of the feeding mechanism 1 is mounted in the lower middle region of the feeding bracket via a vertical linear sliding structure. The feeding platform 1 is connected to a feeding screw drive pair 1 that controls the linear sliding action. This feeding screw drive pair 1 mainly consists of a drive screw 1 and a nut 1. This feeding screw drive pair 1 has an automatic feeding control system 1, which includes a feeding detection sensor 1, a feeding motor 1, and a controller 1. The drive screw 1 is rotatably mounted in the lower middle region of the feeding bracket, and the nut 1 is fixedly connected to the feeding platform 1 and threadedly connected to the corresponding drive screw 1. The feeding detection sensors of the automatic feeding control system are arranged at the feeding port of the feeding mechanism to dynamically detect the height position of the stacked printing media on the feeding platform and feed the detected information of the current height position of the stacked printing media back to the controller. The feeding motor of the automatic feeding control system is connected to the transmission screw of the feeding screw drive pair. Under the control command of the controller, the feeding motor drives the transmission screw of the feeding screw drive pair to convert the rotational motion into linear motion of the feeding platform on the feeding support, so as to control the feeding platform to rise / fall in the lower middle area of ​​the feeding support. Specifically:

[0118] When the controller of the automatic feeding control system receives the instruction to place the stacked printing media, it controls the feeding platform to descend to the initial position on the feeding support by the corresponding rotation output of the feeding motor and the linear motion of the feeding screw drive pair.

[0119] When the controller of the automatic feeding control system receives a start command, it controls the feeding platform to rise on the feeding support by rotating through the corresponding rotation output of the feeding motor and then through the rotational motion of the feeding screw drive pair until the feeding detection sensor detects the highest position signal of the current stacked printing media.

[0120] During the continuous feeding process of the printing operation, the feeding detection sensor continuously detects the highest position signal of the current stacked printing media. Based on this signal, the controller of the automatic feeding control system controls the feeding platform to gradually rise on the feeding frame until it rises to the set final position. Then, automatically or according to the manual setting command, the feeding platform is controlled to descend on the feeding support to the initial position.

[0121] The second feeding mechanism has a feeding bracket and a feeding platform arranged on the feeding bracket for placing stacked printing media. The height of the feeding platform on the feeding bracket is adjustable via a linear sliding structure that can be raised / lowered. Specifically, the feeding platform of the second feeding mechanism is mounted in the upper middle area of ​​the feeding bracket via a vertical linear sliding structure (it should not interfere with the spatial position of the first feeding mechanism and is located above the feeding port of the first feeding mechanism). The feeding platform is connected to a feeding screw drive pair two that controls the linear sliding action. This feeding screw drive pair two mainly consists of a drive screw two and a nut two. This feeding screw drive pair two has an automatic feeding control system two, which includes a feeding detection sensor two, a feeding motor two, and a controller two. The drive screw two of the feeding screw drive pair two is rotatably mounted in the upper middle area of ​​the feeding bracket, and the nut two of the feeding screw drive pair two is fixedly connected to the feeding platform two and threadedly connected to the corresponding drive screw two. The second feeding detection sensor of the automatic feeding control system is arranged at the feeding port of the feeding mechanism. It is used to dynamically detect the height position of the stacked printing media on the feeding platform and to feed back the detected information of the current height position of the stacked printing media to the controller of the automatic feeding control system. The second feeding motor of the automatic feeding control system is connected to the transmission screw of the feeding screw drive pair. Under the control command of the controller, the second feeding motor drives the transmission screw of the feeding screw drive pair to move, thereby converting the rotational motion into linear motion of the feeding platform on the feeding support, so as to control the feeding platform to rise / fall in the upper middle area of ​​the feeding support. Specifically:

[0122] When the controller of the automatic feeding control system receives the instruction to place the stacked printing media, it controls the feeding platform to descend to the initial position on the feeding support by the corresponding rotation output of the feeding motor, which in turn controls the linear motion of the feeding screw drive pair.

[0123] When the controller of the automatic feeding control system receives a start command, it controls the feeding platform to rise on the feeding support by rotating through the corresponding rotation output of the feeding motor and through the rotational motion of the feeding screw drive pair to linear motion until the feeding detection sensor detects the highest position signal of the current stacked printing media.

[0124] During the continuous feeding process of the printing operation, the feeding detection sensor 2 continuously detects the highest position signal of the current stacked printing media. Based on this signal, the controller 2 controls the feeding platform 2 to gradually rise on the feeding frame until it rises to the set final position. Then, the controller automatically or according to the manual setting command controls the feeding platform 2 to descend on the feeding support to the initial position.

[0125] The receiving mechanism 7 is used to collect the printing media sheet by sheet and stack them according to the set requirements, and is used to connect sequentially with the downstream end of the sequential conveying path - that is, the downstream end of the third flat conveying section E described below.

[0126] The receiving mechanism 7 has a receiving bracket and a receiving platform arranged on the receiving bracket for collecting and storing stacked printing media. Specifically, the height of the receiving platform on the receiving bracket is adjustable via a linear sliding structure that can be raised / lowered. The adjustment structure is as follows: the receiving platform of the receiving mechanism is mounted on the receiving bracket with a vertical linear sliding structure. The receiving platform is connected to a receiving screw drive pair three that controls the linear sliding action. This receiving screw drive pair three mainly consists of a transmission screw three and a nut three. This receiving screw drive pair three has an automatic receiving control system three, which includes a receiving detection sensor three, a receiving motor three, and a controller three. The transmission screw three is rotatably mounted on the receiving bracket, and the nut three is fixedly connected to the receiving platform and threadedly connected to the corresponding transmission screw three. The three receiving detection sensors of the automatic receiving control system are arranged at the receiving port of the receiving mechanism. They are used to dynamically detect the height position of the printing media stack on the receiving platform and feed back the detected information of the current height position of the printing media stack to the controller. The receiving motor of the automatic receiving control system is connected to the transmission screw of the receiving lead screw pair. Under the control command of the controller, the receiving motor drives the transmission screw of the receiving lead screw pair to convert the rotational motion into linear motion of the receiving platform on the receiving support, so as to control the receiving platform to rise / fall on the receiving support. Specifically:

[0127] When the controller receives an instruction to collect the printed media, it controls the receiving platform to rise to the initial position on the receiving bracket.

[0128] As the printed media are stacked on the receiving platform, the receiving detection sensor three continuously detects the highest position signal of the current printing media stack. Based on this signal, the controller three controls the receiving platform to gradually descend on the receiving frame until it descends to the set final position. The controller then automatically or according to manually set instructions controls the receiving platform to rise back to the initial position on the receiving support.

[0129] The feeding mechanism 6 and the receiving mechanism 7 form a sequential conveying path on the frame 5 for single sheets of printing media from supply to collection. In the height direction of the frame 5, there are a first horizontal conveying section A, a first vertical conveying section B, a second horizontal conveying section C, a second vertical conveying section D, and a third horizontal conveying section E connected in sequence.

[0130] The third horizontal conveying section E is positioned above the second horizontal conveying section C. As a transitional conveying section between the sequential conveying path and the receiving mechanism 7, the third horizontal conveying section E does not require strict horizontal alignment; basic horizontal (lateral) conveying is sufficient. The tail end of the third horizontal conveying section E connects sequentially with the receiving mechanism 7.

[0131] The second horizontal conveyor section C is positioned above the first horizontal conveyor section A. As described below, the second horizontal conveyor section C requires the arrangement of the printing mechanism and the correction mechanism; therefore, the second horizontal conveyor section C is basically arranged horizontally on the frame 5.

[0132] The first end of the first horizontal conveyor section A is sequentially connected to the feeding mechanism 6. As described below, the first horizontal conveyor section A needs to accommodate the printing mechanism and the correction mechanism, so the first horizontal conveyor section A is basically arranged horizontally on the frame 5.

[0133] Thus, between the feeding mechanism 6 and the receiving mechanism 7 on the frame 5, a sequential conveying path with an S-shaped loop structure from bottom to top is formed. This not only meets the technical requirements for setting up a sequential conveying path for double-sided printing, but also effectively reduces the length of the frame 5 and the floor space occupied.

[0134] Based on the structural characteristics of the aforementioned feeding mechanism 6 and the sequential conveying path characteristics of the upward S-shaped loop structure on the frame 5, to facilitate the arrangement of the feeding mechanism 1 on the frame 5 and its smooth connection with the first end of the first horizontal conveying section A, a feeding conveying section F is arranged at the feeding port of the feeding mechanism 1 to sequentially connect the feeding port of the feeding mechanism 1 to the first end of the first horizontal conveying section A. A conveying mechanism for conveying the printing medium according to a set direction is arranged on the feeding conveying section F, so that the printing medium conveyed by the feeding mechanism 1 enters the first horizontal conveying section A via the feeding conveying section F. The feeding conveying section F is arranged on the feeding support with an inclined structure.

[0135] Due to the arrangement of the feeding mechanism one on the frame 5 and its sequential connection with the first horizontal conveying section A of the sequential conveying path of the S-shaped loop structure, a feeding bypass conveying mechanism is arranged at the feeding port of the feeding mechanism two to sequentially connect the feeding port of the feeding mechanism two with the beginning of the feeding conveying section F. That is, the feeding port of the feeding mechanism two is connected to the connection between the feeding port of the feeding mechanism one and the feeding conveying section F through the feeding bypass conveying mechanism, so that the printing medium conveyed by the feeding mechanism two enters the first horizontal conveying section A via the feeding bypass conveying mechanism and the feeding conveying section F. The feeding bypass conveying mechanism is basically arranged vertically on the feeding support.

[0136] Based on the aforementioned redundant configuration of feeding mechanisms one and two, simultaneous feeding is not possible during printing; each mechanism can only feed material individually. Therefore, the feed rollers at the feed inlets of feeding mechanisms one and two only rotate during the current feeding period; otherwise, they remain stationary. Their rotation is controlled by the printer's control system, which uses pre-set commands to switch feeding between feeding mechanisms one and two. Thus, assuming feeding mechanism one feeds first and feeding mechanism two as a backup, when the stacked printing media on feeding mechanism one is depleted, the control system switches to feeding mechanism two to continue feeding. This allows the operator to freely place stacked printing media on feeding mechanism one without interfering with the printer's continuous operation, enabling feeding mechanism one to function as a backup. The same applies when feeding mechanism two is depleted.

[0137] Because the high-speed printer of this invention is relatively large compared to a general office printer, in order to facilitate the transportation of the entire machine and reduce the high requirements for transportation space, the feeding bracket of the feeding mechanism 6 is assembled in a detachable combination structure at the corresponding end of the frame 5. Similarly, the receiving bracket of the receiving mechanism 7 is assembled in a detachable combination structure at the corresponding end of the frame 5.

[0138] To accommodate double-sided printing of the supplied printing media, a first printing mechanism A2 is arranged on the first flat conveyor section A, and a second printing mechanism C2 is arranged on the second flat conveyor section C; both the first printing mechanism A2 and the second printing mechanism C2 employ inkjet printing structures. The printing operation process is as follows, executed according to the printing task settings within the control system:

[0139] When only one side of the current printing medium needs to be printed, the printing medium conveyed by the feeding mechanism 6 will be transported along an S-shaped path along the first horizontal conveying section A, the first vertical conveying section B, the second horizontal conveying section C, the second vertical conveying section D, and the third horizontal conveying section E. During the conveying process, according to the set instructions, the corresponding printing mechanism on the first horizontal conveying section A / the second horizontal conveying section C will print graphic information on the upper surface of the printing medium that has been conveyed there. The other printing mechanism will not work, and its conveying section will only be used for conveying the current printing medium.

[0140] When double-sided printing is required on the current printing medium, the printing medium conveyed by the feeding mechanism 6 is printed on the upward-facing surface by the first printing mechanism A2 on the first horizontal conveying section A. After being conveyed by the first vertical conveying section B, the printing medium with the first side printed is formed on the second horizontal conveying section C with the second side facing up and the first side facing down. After the second side is printed by the second printing mechanism C2, double-sided printing is completed. Then, it is conveyed to the receiving mechanism 7 by the second vertical conveying section D and the third horizontal conveying section E.

[0141] To ensure high-quality printing by ensuring consistent positioning of sequentially transported printing media by the first printing mechanism A2 and the second printing mechanism C2, a first correction mechanism A1 is provided upstream of the first printing mechanism A2 to correct the deviation of the transported single printing media. That is, the first correction mechanism A1 and the first printing mechanism A2 are located on the first flat conveying section A. A second correction mechanism C1 is provided upstream of the second printing mechanism C2 to correct the deviation of the transported single printing media. That is, the second correction mechanism C1 and the second printing mechanism C2 are located on the second flat conveying section C.

[0142] The first and second correction mechanisms A1 and C1 described above have the same structure. In this embodiment, the correction mechanism includes a cooperating inclined conveying mechanism and a wind-powered mechanism. Specifically, the inclined conveying mechanism is an inclined roller drive structure with multiple rotatable drive rollers sequentially mounted on the frame 5 along the printing media conveying direction. These drive rollers are rotatably mounted on the same plane on the frame 5, and adjacent drive rollers maintain essentially the same fit clearance and tilt angle. The inclined conveying mechanism also has a guide side that protrudes on one side of the inclined conveying mechanism along the printing media conveying direction. This guide side is fixedly connected to the frame 5 and is stationary relative to the drive rollers. The guide side aligns with the positioning reference of the downstream printing mechanism that it cooperates with. Each drive roller engages with the guide side at an acute angle in the printing media conveying direction. The wind-powered mechanism has a fan bracket and multiple sets of electric fans arranged on the fan bracket. The fan bracket is supported and fixed on the frame 5 and is located above the inclined conveying mechanism. Each set of electric fans is arranged on the fan bracket along the direction of the printing media transport, and the arrangement of these electric fans basically corresponds to the longitudinal length of the transmission and transport area of ​​the inclined conveyor mechanism. The air outlet of the fan mechanism faces the transmission and transport area of ​​the inclined conveyor mechanism, and the direct transport path of the air force blown by the fan mechanism, with the guide side as the reference, is perpendicular to the plane of action of the inclined conveyor mechanism. That is to say, the direct transport path of the air force blown by the fan mechanism is basically parallel to the guide surface of the guide side. In the cooperation between the fan mechanism and the inclined conveyor mechanism, the air force blown by the fan mechanism cannot cover the lateral width of the currently transported printing media in the transverse direction (with the printing media transport direction as the longitudinal direction). It can only have an effect on the area of ​​the currently transported printing media close to the guide side. That is, the direct area of ​​action of the air force blown by the fan mechanism in the transmission and transport area of ​​the inclined conveyor mechanism should be close to the guide side. Only in this way can it cooperate with the inclined conveyor mechanism to dynamically turn and correct the printing media during transport. Typically, the air pressure exerted by each electric fan of the wind power mechanism on the printed medium being transported should be controlled within the range of 2 to 50 Pa, preferably within the range of 5 to 10 Pa.

[0143] As described above, a sequential conveying path is formed on the frame 1 between the feeding mechanism 6 and the receiving mechanism 7, consisting of the feeding conveying section F, the first horizontal conveying section A, the first vertical conveying section B, the second horizontal conveying section C, the second vertical conveying section D, and the third horizontal conveying section E, arranged from bottom to top, to convey the printing media output by the feeding mechanism 6. Therefore, each conveying section must be equipped with a conveying mechanism for conveying the printing media in a set direction. The conveying mechanisms at the feeding conveying section F and each horizontal conveying section (including the first horizontal conveying section A, the second horizontal conveying section C, and the third horizontal conveying section E) do not have specific structural requirements and can use common paper conveying mechanisms, as long as they meet the requirement of horizontal conveying of the printing media (such as paper). Of course, the conveying at the correction mechanism is based on the aforementioned inclined roller conveying mechanism. As for the conveying mechanisms at the first vertical conveying section B and the second vertical conveying section D, the vertical conveying device of this utility model described below is required.

[0144] In other words, this utility model, based on the aforementioned high-speed printer, forms the following... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The vertical conveying device shown is used in a sequential conveying path suitable for an S-shaped loop structure, in which the printing medium is conveyed by height conversion from the first horizontal conveying section A through the first vertical conveying section B to the second horizontal conveying section C, and from the second horizontal conveying section C through the second vertical conveying section D to the third horizontal conveying section E.

[0145] The conveying mechanisms at the first vertical conveying section B and the second vertical conveying section D adopt the same vertical conveying device structure as follows.

[0146] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the vertical conveying device of this utility model includes a vertical conveying mechanism 1, a wind power mechanism 2 (this wind power mechanism is not the same structure as the wind power mechanism at the above-mentioned correction mechanism, and the two exist independently of each other), a guide transmission mechanism 8, and necessary guide structures.

[0147] Specifically, the vertical conveying mechanism 1 is vertically arranged above the upstream horizontal conveying mechanism it connects to (i.e., the horizontal conveying mechanism at the first printer A2 on the first horizontal conveying section A / the horizontal conveying mechanism at the second printer C2 on the second horizontal conveying section C, in comparison). Figure 1The arrangement shown is referred to as "lower horizontal conveyor mechanism 4") and its connected downstream horizontal conveyor mechanism (i.e., the horizontal conveyor mechanism at the second correction mechanism C1 on the second horizontal conveyor section C / the horizontal conveyor mechanism at the third horizontal conveyor belt E, for comparison). Figure 1 The arrangement shown is referred to as "upper flat conveying mechanism 3" and is located downstream of the conveying direction of the lower flat conveying mechanism 4 and upstream of the conveying direction of the upper flat conveying mechanism 3. It forms an approximately horizontal U-shaped conveying path relationship with the lower flat conveying mechanism 4 and the upper flat conveying mechanism 3, and is used to vertically convey the printing medium conveyed by the connected lower flat conveying mechanism 4 upward.

[0148] The vertical conveying mechanism 1 has an upper shaft 12 arranged on the upper side and a lower shaft 14 arranged on the lower side on the frame 5 of the printer, multiple conveyor belts 16 that are circulated and driven between the upper shaft 12 and the lower shaft 14, and a support plate 11 located between the upper shaft 12 and the lower shaft 14 and within the circulated transmission space of the conveyor belts.

[0149] More specifically, to ensure the vertical conveying mechanism 2 is aligned with the upper horizontal conveying mechanism 3, avoids interference between the two, and ensures smooth rotation of the printing media, the upper shaft 12 of the vertical conveying mechanism 2 is positioned at the inlet of the upper horizontal conveying mechanism 3, slightly lower than the upper horizontal conveying mechanism 3. To ensure the vertical conveying mechanism 2 is aligned with the lower horizontal conveying mechanism 4, avoids interference between the two, and ensures smooth rotation of the printing media, the lower shaft 14 of the vertical conveying mechanism 2 is positioned at the outlet of the lower horizontal conveying mechanism 4, slightly lower than the outlet of the lower horizontal conveying mechanism 4, and its distance from the tail end of the lower horizontal conveying mechanism 4 is matched.

[0150] To ensure stable assembly of each conveyor belt 16 and prevent misalignment during cyclic transmission, multiple sets of upper pulleys 13 are arranged along the axial spacing on the upper shaft 12. Each set of upper pulleys 13 has an approximately shuttle-shaped variable diameter structure with a central diameter slightly larger than the diameters at both ends. Similarly, multiple sets of lower pulleys 15 are arranged along the axial spacing on the lower shaft 14. Each set of lower pulleys 15 has an approximately shuttle-shaped variable diameter structure with a central diameter slightly larger than the diameters at both ends. The outlines of each set of lower pulleys 15 and each set of upper pulleys 13 are basically the same, and it is required that each lower pulley 15 on the lower shaft 14 and each upper pulley 13 on the upper shaft 12 have a one-to-one corresponding fit.

[0151] Thus, each conveyor belt 16 is fitted between the upper shaft 12 and the lower shaft 14 via corresponding pulleys in a one-to-one matching relationship. The conveyor belt 16 fitted onto the pulleys should form a surface contact transmission engagement with the corresponding pulley's circumferential contact surface. This requires the conveyor belt 16 to have slight elastic deformation properties, adapting to the changing diameter profile of the pulleys under the support of the upper and lower pulleys to form a surface contact transmission engagement. The conveyor belts 16 fitted between the upper shaft 12 and the lower shaft 14 are arranged side-by-side with spacing along the axial direction of the upper shaft 12 / lower shaft 14. The spacing is preferably equal, and at least two conveyor belts 16 are within the transverse width range of the direction of travel of the currently conveyed printing medium.

[0152] The vertical transmission of the above structure involves connecting a drive assembly—such as a synchronous transmission structure or a motor—to one end of the upper shaft 12 / lower shaft 14. Under the drive of the drive assembly, the upper shaft 12 / lower shaft 14, as the main input, rotates, driving each conveyor belt 16 in a cyclic transmission. During this process, the lower shaft 14 / upper shaft 12, as the driven shaft, rotates. Thus, when the conveyor belt 16 circulates between the upper shaft 12 and the lower shaft 14, its outer ring wall is always vertically adjacent to the lower horizontal conveying mechanism 4, which is the upstream conveying mechanism, and the upper horizontal conveying mechanism 4, which is the downstream conveying mechanism. This vertical outer ring wall needs to undertake the task of conveying the printing media during the conveying process. That is, during the cyclic transmission, the conveyor belt 16 is adjacent to the flat surfaces of the connected upstream and downstream horizontal conveying mechanisms, serving as the conveying working surface 17 for conveying the printing media.

[0153] As can be seen from the above, the conveying working surface 17 of the conveyor belt 16 is not a fixed area, but rather it is dynamically formed on the flat surface adjacent to the connected upstream and downstream flat conveying mechanisms when it is circulated between the upper shaft 12 and the lower shaft 14.

[0154] Between two adjacent conveyor belts 16 arranged at the aforementioned spacing, there is a clearance. This clearance affects the flatness of the conveying working surface 17, and consequently, the flatness of the printing media conveying process. Therefore, a support plate 11 is installed within the circulating transmission space of each conveyor belt 16, connecting its two sides in the horizontal direction to the frame 5. Furthermore, the arrangement of the support plate 11 within the circulating transmission space of the conveyor belts 16 should ensure that one flat surface is adjacent to the conveying working surface 17 of the conveyor belt 16, filling the clearance between adjacent conveyor belts 16 to create a relatively large, flat conveying working surface in the vertical direction. The flatness of this larger conveying working surface is negligible due to the material thickness of the conveyor belts 16. In other words, during the circulating transmission process, the conveyor belts 16 essentially move along the conveying working surface of the support plate 11.

[0155] The vertical conveying mechanism 1, as described above, needs to work in conjunction with the air-powered mechanism 2 to generate negative pressure adsorption force on the printing medium entering the vertical conveying path, thus adhering and fixing it to prevent it from falling off. Therefore, the following air duct structure also needs to be formed:

[0156] Firstly, the area of ​​the support plate 11 corresponding to each conveyor belt 16 has an air duct that runs along the cyclic transmission direction of the conveyor belt 16 and through the thickness direction of the support plate 11. The structure is usually formed by opening windows or screen holes, with windows that can form a large ventilation area being the best. Each air duct on the support plate 11 is blocked by the corresponding conveyor belt 16 during the cyclic transmission process.

[0157] As for the area of ​​the bearing plate 11 between adjacent conveyor belts 16, no structural requirements are required, as long as it meets the requirements for conveying flatness.

[0158] Secondly, on each conveyor belt 16, without affecting its structural strength, there are several wind-driven adsorption holes 112 that run through the thickness direction (such as...). Figure 6 As shown, to ensure the flatness of the conveyor belt 16 forming the conveying working surface 17, the diameter of these wind-driven adsorption holes 112 should not be too large, usually between 2 and 5 mm is optimal.

[0159] The wind power mechanism 2 has multiple small fans, which are divided into multiple groups corresponding to the air ducts on the support plate 11 of the vertical conveying mechanism 1, with multiple fans in each group. The multiple small fans in each group are arranged vertically side by side on the support plate 11 along the corresponding air ducts, and are located in the circulation transmission space of the conveyor belt 16. The arrangement of each small fan on the support plate 11 is opposite to the conveying working surface, and the air inlet of each small fan faces the conveyor belt 16 at the corresponding air duct.

[0160] The small fans constituting wind mechanism 2 have basically the same power and operate in a similar manner. If differentiation is desired, the grouping and activation can be determined by the width of the printing media being transported. For example, if A4-sized printing media can only cover three conveyor belts during transport, then the small fans corresponding to those three conveyor belts should be activated, and the others should be stopped. If the current type of printing media being transported is A3-sized, which can cover five conveyor belts during transport, then the small fans corresponding to those five conveyor belts should be activated.

[0161] Thus, the air inlet of the wind mechanism 2 is arranged within the circulating transmission space of the conveyor belt 16. The wind mechanism 2 operates with negative pressure adsorption, generating negative pressure adsorption force on the conveying working surface 17 of the conveyor belt 16. This causes the printing medium on the conveying working surface 17 of the vertical conveying mechanism 1 to be adsorbed and fixed by the negative pressure, allowing the conveyor belt 16 to continue its transmission and preventing it from falling off. Furthermore, this adsorption airflow also dries the inkjet print (i.e., the printed content) on the printing medium during the conveying process, helping to ensure the integrity and clarity of the printed print.

[0162] Based on the above-mentioned cooperation between the wind power mechanism 2 and the vertical conveying mechanism 1, the adsorption force generated by the wind power mechanism 2 is within the conveying stroke of the conveying working surface 17 of the vertical conveying mechanism 1, and therefore must be within the height range of the vertical conveying mechanism 1. More specifically, it is located on the conveying working surface 17 between the upper shaft 12 and the lower shaft 14.

[0163] As described above, the conveying working surface, composed of multiple conveyor belts 16 arranged at intervals and combined with the support plate 11, uses the support plate 11 as the base and the conveyor belts 16 as the transmission structure, ensuring that the incoming printing media can be conveyed flatly. Compared to using a wide conveyor belt that can cover the support plate, multiple narrow-width conveyor belts can achieve the same function, effectively reducing costs. Moreover, the conveying structure formed by multiple conveyor belts 16 and the support plate 11 allows for the centralized arrangement of the wind power mechanism 2, enabling the adsorption of the printing media with lower operating power, avoiding the high power requirements of wide-width adsorption.

[0164] The vertical conveying mechanism 1, as described above, is vertically connected to the tail end of the lower horizontal conveying mechanism 4, which is upstream. The printing media output horizontally from the lower horizontal conveying mechanism 4 directly enters the vertical conveyor, posing a significant risk of jamming. Therefore, corresponding to the sequential conveying path of the printing media, a first guide plate 18 with a smooth arc-shaped cross-section is connected at the upstream end of the conveying working surface of the vertical conveying mechanism 1.

[0165] The upstream end of the first guide plate 18 is sequentially connected to the tail end of the conveying working surface of the lower flat conveying mechanism 4, and is slightly lower than the conveying working surface of the lower flat conveying mechanism 4, so that the printing media travel head output by the lower flat conveying mechanism 4 can smoothly enter the first guide plate 18. Of course, since the first guide plate 18 is a fixed structural component and the lower flat conveying mechanism 4 is a moving structural component, the two cannot be directly fixedly connected and need to maintain a fitting gap. Therefore, the first guide plate 18 is fixed to the frame 5 by a bracket on the side opposite to the conveying working surface.

[0166] The downstream end of the first guide plate 18 is sequentially connected to the upstream end of the conveying working surface of the vertical conveying mechanism 1. Since the first guide plate 18 is a fixed structural component and the conveyor belt 16 of the vertical conveying mechanism 1 is a moving structural component, the two cannot be directly fixedly connected and need to maintain a fitting gap. Therefore, the downstream end of the first guide plate 18 is arranged with a slight gap in a nested fit at the upstream end of the conveying working surface of the vertical conveying mechanism 1. Moreover, the downstream end of the first guide plate 18 should be within the area of ​​action of the adsorption force generated by the conveying working surface of the vertical conveying mechanism 1.

[0167] Furthermore, the function of the first guide plate 18 is to guide and steer the printing medium during its transport; it does not have a transmission function itself and cannot apply a conveying force to the printed medium. Therefore, the length of the transport path of the first guide plate 18 should be less than the length of the printed medium in the transport direction. In this way, when the head of the current printed medium passes the first guide plate 18 and enters the vertical transport mechanism 1, the tail of the current printed medium is still on the lower horizontal transport mechanism 4. As transport continues, the medium sequentially exits the lower horizontal transport mechanism 4 and completely passes the first guide plate 18, ensuring the reliability of the connection between the vertical transport mechanism 1 and the lower horizontal transport mechanism 4.

[0168] Based on the existence of the first guide plate 18, the vertical conveying mechanism 1 and the lower horizontal conveying mechanism 4 can form a vertical connection relationship that cannot be achieved in the height direction of the existing paper feeding roller conveying, as well as an acute angle connection relationship (of course, the angle cannot be too small, such as above 70°, etc.), making the arrangement of the vertical conveying mechanism 1 and the lower horizontal conveying mechanism 4 within the printer frame 5 more flexible.

[0169] The vertical conveying mechanism 1, as described above, is vertically connected to the beginning of the upper horizontal conveying mechanism 3, which is downstream. The printing media vertically output by the vertical conveying mechanism 1 directly enters the horizontal conveying of the upper horizontal conveying mechanism 3, which poses a significant risk of jamming. Therefore, corresponding to the sequential conveying path of the printing media, a second guide plate 19 is arranged at the top of the vertical conveying mechanism 1, located downstream of the conveying working surface. The conveying path cross-section of this second guide plate 19 has a smooth arc-shaped structure.

[0170] The upstream end of the second guide plate 19 needs to be sequentially connected to the downstream end of the conveying working surface of the vertical conveying mechanism 1. Specifically, the second guide plate 19 is fixed on the bearing plate 11 of the vertical conveying mechanism 1, with the top of the bearing plate 11 as the carrier. The upstream end of the conveying working surface of the second guide plate 19 is basically flush with the conveying working surface of the bearing plate 11. Thus, the upstream end of the conveying working surface of the second guide plate 19 is adjacent to and slightly behind the conveying working surface 17 formed by the conveyor belt 16 of the vertical conveying mechanism 1. The printing medium output from the conveying working surface 17 of the conveyor belt 16 is naturally guided smoothly through the conveying working surface of the second guide plate 19.

[0171] The downstream end of the second guide plate 19 is sequentially connected to the upstream end of the conveying working surface of the upper flat conveying mechanism 3, which is downstream of the guide plate 19. Specifically, the downstream end of the second guide plate 19 corresponds to the inlet of the upper flat conveying mechanism 3, and the guide trajectory is slightly higher than the inlet. Since the second guide plate 19 is a fixed structural component and the upper flat conveying mechanism 3 is a moving structural component, the two cannot be directly fixedly connected and need to maintain a fitting clearance.

[0172] Furthermore, the function of the second guide plate 19 is to guide and steer the printing medium during its transport. It does not have a transmission and transport function itself and cannot apply a transport force to the printed medium as it is being transported. Therefore, the transport path length of the second guide plate 19 should be less than the length of the printed medium in the transport direction. In this way, when the head of the current printed medium passes the second guide plate 19 and enters the upper horizontal transport mechanism 3, the tail of the current printed medium is still on the vertical transport mechanism 1. As transport continues, the medium will sequentially exit the vertical transport mechanism 1 and completely pass the second guide plate 19, thus ensuring the reliability of the connection between the vertical transport mechanism 1 and the upper horizontal transport mechanism 3.

[0173] Based on the arrangement of multiple conveyor belts 16 on the vertical conveying mechanism 1, the second guide plate 19 consists of multiple pieces, each distributed between two adjacent conveyor belts 16.

[0174] As can be seen from the cooperation relationship between the vertical conveying mechanism 1 and the upper horizontal conveying mechanism 3, the vertical conveying mechanism 1 needs to lift the printing medium upwards and bend due to the guidance of the second guide plate 19. Furthermore, since the printing medium has already lost its suction force upon entering the second guide plate 19, there is a possibility that the printing medium's travel head may fall downwards and turn around. Therefore, corresponding to the second guide plate 19, third guide plates 110 are spaced apart on one side of the conveying working surface of the second guide plate 19. The third guide plate 110 and the second guide plate 19 form a channel for the printing medium to enter and exit; that is, the third guide plate 110 and the second guide plate 19 form a guide channel 111 for conveying the printing medium downstream to the upper horizontal conveying mechanism 3. Of course, since the third guide plate 110 is a fixed structural component, its upstream and downstream ends need to maintain a slight clearance fit with the corresponding vertical conveying mechanism 1 and upper horizontal conveying mechanism 3, and it is fixed to the frame 5 by a bracket on the back side of the conveying working surface.

[0175] The vertical conveying device composed of the vertical conveying mechanism 1, the first guide plate 18, the second guide plate 19, and the third guide plate 110 is fully capable of conveying from bottom to top for the structural rigidity of commonly used printing media and for general inkjet printing (excluding basic high-coverage printing such as pictures and photos). However, for printing high-coverage pictures and photos, the inkjet printing marks will significantly affect the structural rigidity of the printing media, making its structural rigidity significantly reduced and its flexibility significantly increased. In this case, during the process of entering the vertical conveying mechanism 1 through the first guide plate 18, it is easy to encounter difficulties in upward guidance and the phenomenon of turning around, which is more obvious under high-speed conveying. Based on this, the guide transmission mechanism 8 is arranged at the conveying working surface of the vertical conveying mechanism 1 and along the height direction of the vertical conveying mechanism 1.

[0176] More specifically, the guide transmission mechanism 8 has a lower shaft 82 that first engages with the currently conveyed printing medium, and an upper shaft 81 that subsequently engages with the currently conveyed printing medium. Multiple media guide belts 83, fitted between the lower shaft 82 and the upper shaft 81, circulate and are driven by the same axial spacing between the upper shaft 81 and the lower shaft 82. The guide transmission mechanism 8 operates by connecting a drive assembly—such as a synchronous transmission structure or a motor—to one end of the upper shaft 81 / lower shaft 82. Driven by this drive assembly, the upper shaft 81 / lower shaft 82, as the main input, rotates, driving the media guide belts 83 in a circulatory manner, which in turn drives the lower shaft 82 / upper shaft 81, as the driven components, to rotate. To ensure synchronization with the vertical conveying mechanism 1, it is best that both use the same drive assembly.

[0177] The transmission guide mechanism 8 of the above structure has a lower shaft 82 arranged with a clearance fit on one side of the conveying working surface of the first guide plate 18. The arc shape of the lower shaft 82 basically matches the arc shape of the conveying working surface of the first guide plate 18. The upper shaft 81 is arranged with a contact friction fit at the downstream end of the vertical conveying mechanism 1, slightly lower than the upper shaft 12 and slightly higher than the bearing plate 11, and is located at the inlet of the guide channel 111 between the second guide plate 19 and the third guide plate 110. In this way, the friction conveying area of ​​the upper shaft 81 is connected to the area of ​​the adsorption force generated by the conveying working surface of the vertical conveying mechanism 1 at the top side.

[0178] As can be seen from the arrangement of the transmission guide mechanism 8, the media guide belt 83 and the lower shaft 82, in conjunction with the first guide plate 18, form a guide channel for the input of the currently conveyed printing media during the cyclic transmission process. The guide channel between the lower shaft 82 and the first guide plate 18 mainly guides and straightens the traveling head of the printing media to prevent it from turning around and detaching from the adsorption of the vertical conveying mechanism 1. Therefore, the lower shaft 82 does not need to squeeze or rub the printing media, which reduces the impact of scratching on the printed marks attached to the printing media.

[0179] As can be seen from the arrangement of the transmission guide mechanism 8, the media guide belt 83 and the upper shaft 81, in the process of cyclic transmission, cooperate with the vertical conveying mechanism 1 in a contact friction manner to form a channel for the output of the currently conveyed printing media. Because the printing media, when output from the vertical conveying mechanism 1, is bent and detached from the suction of the air mechanism 2 by the guidance of the second guide plate 19, and because the upper shaft 12 of the vertical conveying mechanism 1 is slightly lower than the upper horizontal conveying mechanism 3 due to interference in its arrangement position, the upper shaft 81 of the guide transmission mechanism 8 forms a frictional contact with the guide roller at the downstream part of the vertical conveying mechanism 1. The guide roller, in conjunction with the conveyor belt 16, performs frictional conveying, effectively connecting the suction conveying of the conveyor belt 16, ensuring that the printing media, during the process of being output from the vertical conveying mechanism 1, is reliably conveyed by friction and continues to move forward smoothly into the upper horizontal conveying mechanism 3. Of course, to avoid frictional compression of the printed media by the media guide belt 83 fitted on the upper shaft 81 when it contacts and rubs against the vertical conveyor mechanism 1, the media guide belt 83 should form a guide groove at the upper shaft 81 for fitting. The properly fitted media guide belt 83 at the upper shaft 81 essentially keeps the wall surface of the upper shaft 81 flat axially. It should be noted that the contact and friction between the upper shaft 81 and the vertical conveyor mechanism 1 during the cyclic transmission process should theoretically pose a risk of friction and scratching to the printed marks. However, due to the quick-drying nature of inkjet prints and the drying effect of airflow adsorption during transport by the vertical conveyor mechanism 1, the prints are sufficiently dried, and the contact friction of the upper shaft 81 will not cause significant scratching.

[0180] Example 2

[0181] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0182] like Figure 9 As shown, the conveyor belt 16 has a non-porous structure, and the wind-powered adsorption holes 112 are arranged on the support plate 11. However, the arrangement of the wind-powered adsorption holes 111 on the support plate 11 should be close to the two side edge areas of the conveyor belt 16 in the transverse width direction, so as to ensure that the adsorption force on the support plate 11 will not hinder the transmission and conveying of the printing medium by the conveyor belt 16. That is, under the condition of negative pressure adsorption on the conveyed printing medium, the printing medium is prevented from being adsorbed and fixed on the support plate 11 and the conveyor belt 16 cannot be transmitted.

[0183] Therefore, it can be seen that when the wind-powered adsorption holes are arranged in a reasonable position, this embodiment can achieve the technical purpose and effect. However, if the arrangement is unreasonable, the printing medium will be adsorbed and fixed on the carrier plate, and the conveyor belt will skew and pull the printing medium or run idle.

[0184] Example 3

[0185] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0186] like Figure 10 As shown, the upper shaft 81 of the guide transmission mechanism 8 and the conveyor belt 16 of the vertical conveying mechanism 1 are arranged at a distance, that is, the two do not form contact friction, but only form a straightening guide channel;

[0187] In order to adapt to the connection with the wind power mechanism 2 and lift and transport the printed media upward, a guide roller 9 is arranged above the upper shaft 81 of the guide transmission mechanism 8. This guide roller 9 contacts and rubs against the conveyor belt 16 of the vertical conveying mechanism 1 to rub and transport the printed media there. The guide roller 9 is located at the inlet of the guide channel 111 between the second guide plate 19 and the third guide plate 110.

[0188] In this embodiment, the guide transmission mechanism 8 only cooperates with the vertical conveying mechanism 1 to form a vertical conveying channel for the printing medium, and straightens and guides the conveyed printing medium to prevent it from falling off the vertical conveying mechanism 1. With the cooperation of the guide transmission mechanism 8, the conveyed printing medium is reliably attached to the vertical conveying mechanism 1 due to the influence of adsorption force. Since the upper shaft 81 of the guide transmission mechanism 8 does not need to form contact friction with the conveyor belt 16 of the vertical conveying mechanism 1, there is no phenomenon of friction and compression of the printing medium. Therefore, there are no special requirements for the cooperation relationship between the upper shaft 81 and the medium guide belt 83.

[0189] Example 4

[0190] The rest of the content of this embodiment is the same as that of embodiment 3, except that:

[0191] like Figure 11 As shown, 1. Remove the guide transmission mechanism 8;

[0192] 2. (Not shown in the figure) Corresponding to the first guide plate, a fourth guide plate is arranged at intervals on one side of the conveying working surface of the first guide plate. The fourth guide plate and the first guide plate form a guide channel for the printing medium to enter from the upstream horizontal conveying mechanism. It is required that the downstream end of the fourth guide plate should be higher than the downstream end of the first guide plate in the vertical direction and be within the range of the adsorption force of the vertical conveying mechanism, so that the guided printing medium travel head is reliably adsorbed by the adsorption force of the vertical conveying mechanism in the guide channel and then exits the guide channel.

[0193] 3. The conveying speed of the vertical conveying mechanism is greater than that of the upstream horizontal conveying mechanism. Of course, this technical feature can also be applied to Embodiment 1.

[0194] Since this embodiment eliminates the guide transmission mechanism, it should be noted that the resulting printer is not suitable for printing high-coverage documents, especially those using paper as the printing medium, documents with low material rigidity, and particularly those with high coverage on both sides. This would increase the risk of the printing medium falling during vertical upward transport. Alternatively, a higher-powered fan mechanism could be used to generate greater airflow to supplement the function and reduce the risk of the printing medium falling during vertical upward transport; however, this would also significantly increase noise. Therefore, the vertical transport device of this embodiment is suitable for manufacturing printers for text printing with a relatively limited printing area.

[0195] Example 5

[0196] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0197] 1. The feeding mechanism and receiving mechanism of the high-speed printer are swapped in the sequential conveying path, that is, the feeding mechanism is sequentially connected to the third horizontal conveying section, and the receiving mechanism is sequentially connected to the first horizontal conveying section, so that the feeding conveying section in Example 1 can be eliminated;

[0198] This creates a top-to-bottom S-shaped winding transport path for the printing media;

[0199] 2. Based on the structural changes of the high-speed printer mentioned in point 1, the upper horizontal conveying mechanism of the vertical conveying device is the upstream, and the lower horizontal conveying mechanism of the vertical conveying device is the downstream. Thus, during the conveying of the printing media, there is no lifting and conveying of the printing media by the vertical conveying device. Therefore, by connecting the first guide plate and the second guide structure to the upstream and downstream ends of the vertical conveying mechanism respectively, the third guide plate, guide transmission mechanism and other structures can be eliminated.

[0200] Of course, the arrangement of the first guide plate at the upstream end of the vertical conveying mechanism is such that the upstream end of the first guide plate should be slightly lower than the upstream horizontal conveying mechanism to receive and guide the printing medium, and the downstream end of the first guide plate overlaps with the conveying working surface of the vertical conveying mechanism to form a conveying channel between the two; the arrangement of the second guide plate at the downstream end of the vertical conveying mechanism is such that the upstream end of the second guide plate is slightly behind the conveying working surface of the vertical conveying mechanism to avoid forming a boss structure that obstructs the conveying in the direction of printing medium conveying, and the downstream end of the second guide plate overlaps with the conveying working surface of the downstream horizontal conveying mechanism to form a transition connection for conveying.

[0201] Example 6

[0202] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0203] The air inlet of the wind-powered mechanism extends into the conveyor belt circulation space of the vertical conveyor mechanism, generating negative pressure adsorption on the entire conveyor belt circulation space.

[0204] Therefore, the requirements are:

[0205] The bearing plate in the conveyor belt circulation transmission space should adopt a box-shaped structure, and the air inlet of the wind power mechanism should extend into the box-shaped structure to create conditions for negative pressure adsorption on the conveyor belt's conveying working surface.

[0206] The area of ​​the conveyor plate between adjacent conveyor belts is a closed, ductless structure, which prevents the printing media being conveyed from being absorbed by the conveyor plate.

[0207] This embodiment can achieve negative pressure adsorption with a small number of fans, but the fan noise will increase accordingly.

[0208] Example 7

[0209] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0210] The support plate adopts a box-shaped structure, and the wind power mechanism is arranged within the box-shaped space of the support plate.

[0211] Example 8

[0212] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0213] The wind power mechanism uses a single fan to form multiple sets of air inlets, with each set of air inlets corresponding to an air duct on the support plate and arranged on the support plate.

[0214] Example 9

[0215] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0216] 1. The vertical conveyor mechanism adopts a wide integral conveyor belt structure, that is, only one conveyor belt is installed on the upper shaft and the lower shaft.

[0217] 2. Remove the support plate inside the vertical conveyor mechanism;

[0218] 3. Block and seal the left and right sides of the conveyor belt circulation space, extend the air inlet of the wind power mechanism into the conveyor belt circulation space, or arrange the air inlet of the wind power mechanism outside the conveyor belt circulation space, on the side opposite to the conveyor working surface.

[0219] Based on this embodiment, the pulley structure on the upper shaft and the lower shaft can be removed, and the conveyor belt can be directly fitted onto the upper shaft and the lower shaft.

[0220] As an alternative, multiple conveyor belts can be arranged side by side along the axial direction on the upper shaft and the lower shaft, with virtually no gap between them.

[0221] Of course, the effect of this embodiment or related modifications is not as good as that of Embodiment 1.

[0222] Example 10

[0223] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0224] The upper shaft of the vertical conveyor is arranged to be basically aligned with or slightly higher than the upper horizontal conveyor, and the guide rollers are removed.

[0225] Example 11

[0226] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0227] The sequential transport path in a high-speed printer has a first horizontal transport section, a first vertical transport section, and a second horizontal transport section connected sequentially in the height direction of the frame. The second horizontal transport section is located above the first horizontal transport section. The feeding mechanism is sequentially connected to the first horizontal transport section, and the receiving mechanism is sequentially connected to the second horizontal transport section; or, the feeding mechanism is sequentially connected to the second horizontal transport section, and the receiving mechanism is sequentially connected to the first horizontal transport section. This makes the sequential transport path in the printer form a U-shaped loop structure, with the feeding mechanism and the receiving mechanism arranged at the same end of the frame.

[0228] Although this embodiment can achieve vertical conveying of printing media using the vertical conveying device of this utility model, it loses the corresponding function and effect of the sequential conveying path of the S-shaped loop structure.

[0229] Example 12

[0230] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0231] The correction mechanism is a roller clamping friction structure disclosed in the prior art.

[0232] Of course, the time required for the roller clamping and friction correction process of this correction mechanism will directly affect the transmission efficiency of the printing media.

[0233] Example 13

[0234] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0235] Remove the corrective action agency.

[0236] Of course, the correction function will also be eliminated.

[0237] Example 14

[0238] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0239] The corresponding supports of the feeding mechanism and the receiving mechanism are integrally formed with the main frame of the machine frame and cannot be disassembled.

[0240] Of course, the adjustable volume function of the structure will also be eliminated, which places higher technical requirements on the transportation space.

[0241] Example 15

[0242] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0243] The feeding mechanism adopts a single structure, that is, the feeding mechanism 2 / feeding mechanism 1 is removed, and only feeding mechanism 1 / feeding mechanism 2 is retained.

[0244] The removal of the second feeding mechanism will inevitably involve the removal of the feeding bypass conveying mechanism.

[0245] Of course, the corresponding functions will also be eliminated.

[0246] Example 16

[0247] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0248] The feeding screw drive pair of the feeding mechanism can be replaced by a synchronous belt drive structure / tooth chain structure;

[0249] Similarly, the receiving screw drive pair of the receiving mechanism can be replaced by a synchronous belt drive structure / tooth chain structure.

[0250] While this embodiment achieves its technical objective, it slightly complicates the forming structure of the feeding / receiving mechanism.

[0251] The above embodiments are only used to illustrate the present invention and are not intended to limit it.

[0252] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications can still be made to the above embodiments, or equivalent substitutions can be made to some of the technical features, such as adopting an inclined plate structure for the guide plate; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the present invention.

Claims

1. A vertical conveying device for single-sheet printing media, comprising a vertical conveying mechanism (1); The vertical conveying mechanism (1) is arranged downstream of the conveying direction of the upstream horizontal conveying mechanism and is used to vertically convey the printing medium from the upstream horizontal conveying mechanism upward / downward. Its features are: The vertical conveying mechanism (1) has a conveyor belt (16) that circulates along a set conveying direction. During the circulating transmission, the conveyor belt (16) is close to the flat surface of the connected upstream horizontal conveying mechanism and forms a conveying working surface (17) for the printing medium. The vertical conveying device also includes a wind mechanism (2), which can generate an adsorption force on the conveying working surface (17) of the conveyor belt (16) during the conveying stroke. The area of ​​the adsorption force generated by the wind mechanism (2) on the conveying working surface (17) of the conveyor belt (16) is within the height range of the vertical conveying mechanism (1).

2. The vertical conveying device for single-sheet printing media according to claim 1, characterized in that: The vertical conveying mechanism (1) has an upper shaft (12) arranged on the upper side of the frame (5), a lower shaft (14) arranged on the lower side, and a conveyor belt (16) that is circulated and driven between the upper shaft (12) and the lower shaft (14). The upper shaft (12) and the lower shaft (14) are connected to the drive assembly and rotate under the drive of the drive assembly, thereby driving the conveyor belt (16) to circulate. The conveyor belt (16) is provided with a number of wind adsorption holes (112) that run through the thickness direction. The wind power mechanism (2) at least arranges the air inlets within the circulating transmission space of the conveyor belt (16).

3. The vertical conveying device for single-sheet printing media according to claim 1 or 2, characterized in that: The vertical conveying mechanism (1) has multiple independent conveyor belts (16) that are spaced apart along the axial direction of the upper shaft (12) / lower shaft (14). The vertical conveying mechanism (1) also has a support plate (11) mounted on the frame (5) and passing through the circulating transmission space of the conveyor belt (16). One side surface of the support plate (11) is arranged close to the conveying working surface (17) of the conveyor belt (16) and cooperates with the conveying working surface (17) of the conveyor belt (16) to flatten and support the conveyed printing medium. Furthermore, the bearing plate (11) has an air duct that runs through the thickness direction in the area corresponding to each conveyor belt (16), and the air duct on the bearing plate (11) is blocked by the corresponding conveyor belt (16); The air inlets of the wind power mechanism (2) are multiple sets corresponding to each conveyor belt (16). Each set of air inlets is arranged in the air duct of the bearing plate (11) and on the side of the bearing plate (11) opposite to the conveying working surface (17).

4. The vertical conveying device for single-sheet printing media according to claim 3, characterized in that: On the upper shaft (12) of the vertical conveying mechanism (1), multiple sets of upper pulleys (13) are arranged along the axial spacing. And / or, on the lower shaft (14) of the vertical conveying mechanism (1), multiple sets of lower pulleys (15) are arranged along the axial spacing, and each lower pulley (15) on the lower shaft (14) and each upper pulley (13) on the upper shaft (12) are in a one-to-one corresponding cooperation relationship. Each conveyor belt (16) is fitted between the upper shaft (12) and the lower shaft (14) via a corresponding pulley; The pulley is a shuttle-shaped variable diameter structure with a central diameter that is larger than the diameters at both ends. The conveyor belt (16) fitted on the pulley forms a surface contact transmission relationship with the pulley through its inner ring wall.

5. The vertical conveying device for single-sheet printing media according to claim 3, characterized in that: The wind power mechanism (2) has multiple small fans, which are divided into multiple groups corresponding to the air ducts on the support plate (11), with each group consisting of multiple fans; Multiple small fans in each group are arranged vertically side by side along the corresponding air duct of the support plate (11) and mounted on the support plate (11), located in the circulation transmission space of the conveyor belt (16), with the air inlet of each small fan facing the conveyor belt (16) at the corresponding air duct.

6. The vertical conveying device for single-sheet printing media according to claim 1, characterized in that: Corresponding to the sequential conveying path of the printing medium, at the upstream end of the conveying working surface of the vertical conveying mechanism (1), there is a first guide plate (18) that connects to the upstream horizontal conveying mechanism and converts the conveying direction of the printing medium traveling head output by the upstream horizontal conveying mechanism. The conveying path length of the first guide plate (18) is less than the length of the conveyed printing medium in the conveying direction. At the downstream end of the conveying working surface of the vertical conveying mechanism (1), a second guide plate (19) is arranged to connect with the downstream horizontal conveying mechanism and to convert the conveying direction of the printing medium traveling head output by the vertical conveying mechanism (1). The conveying path length of the second guide plate (19) is less than the length of the conveyed printing medium in the conveying direction.

7. The single-sheet printing media vertical conveying device according to claim 6, characterized in that: The sequential conveying path of the printing medium at the vertical conveying mechanism (1) is from bottom to top; Correspondingly, the upstream end of the conveying working surface of the first guide plate (18) is connected to the tail end of the conveying working surface of the upstream horizontal conveying mechanism and is lower than the conveying working surface of the upstream horizontal conveying mechanism; the downstream end of the conveying working surface of the first guide plate (18) is connected to the area of ​​the adsorption force generated by the conveying working surface (17) of the vertical conveying mechanism (1). The upstream end of the conveying working surface of the second guide plate (19) is connected to the downstream end of the conveying working surface of the vertical conveying mechanism (1) at a position structure that is behind the conveying working surface (17) of the conveyor belt (16); the downstream end of the conveying working surface of the second guide plate (19) is connected to the inlet of the downstream horizontal conveying mechanism.

8. The vertical conveying device for single-sheet printing media according to claim 7, characterized in that: The vertical conveying device also has a guide transmission mechanism (8) arranged on the conveying working surface of the vertical conveying mechanism (1) and arranged along the height direction of the vertical conveying mechanism (1); The guide transmission mechanism (8) has a lower shaft two (82) that first engages with the printing medium being transported, an upper shaft two (81) that then engages with the printing medium being transported, and a medium guide belt (83) that is fitted between the lower shaft two (82) and the upper shaft two (81) and circulates through the transmission. The media guide belt (83) and / or the lower shaft (82), in the process of cyclic transmission, cooperate with the first guide plate (18) to form a channel that allows the currently conveyed printing media to be input; The media guide belt (83) and / or the upper shaft (81), in the process of cyclic transmission, cooperate with the vertical conveying mechanism (1) and / or the second guide plate (19) to form a channel that allows the currently conveyed printing media to be output.

9. The vertical conveying device for single-sheet printing media according to claim 8, characterized in that: The conveying path cross-section of the first guide plate (18) has a smooth arc-shaped structure; Furthermore, the arc-shaped structure of the first guide plate (18) matches the arc-shaped profile of the lower shaft (82) of the guide transmission mechanism (8).

10. The vertical conveying device for single-sheet printing media according to claim 8, characterized in that: The upper shaft 2 (81) of the guide transmission mechanism (8) works in conjunction with the conveyor belt (16) of the vertical conveying mechanism (1) to perform frictional conveying of the printing medium during the cyclic transmission process; The friction conveying area of ​​the upper shaft (81) is the area of ​​adsorption force generated by the conveying working surface of the vertical conveying mechanism (1) connected to the top side.

11. The vertical conveying device for single-sheet printing media according to claim 7, characterized in that: Corresponding to the first guide plate (18), a fourth guide plate is arranged at intervals on one side of the conveying working surface of the first guide plate (18). The fourth guide plate and the first guide plate (18) form a guide channel for the printing medium to enter from the upstream flat conveying mechanism. Corresponding to the second guide plate (19), a third guide plate (110) is arranged at intervals on one side of the conveying working surface of the second guide plate (19). The third guide plate (110) and the second guide plate (19) form a guide channel (111) through which the printing medium is output from the vertical conveying mechanism (1) and enters.

12. The single-sheet printing media vertical conveying device according to claim 11, characterized in that: At the inlet of the guide channel (111) between the second guide plate (19) and the third guide plate (110), there are guide rollers that rotate along the set conveying direction and work with the conveyor belt (16) to rub and convey the printing medium that is conveyed. The friction conveying area of ​​the guide roller is the area of ​​adsorption force generated by the conveying working surface of the vertical conveying mechanism (1) connected to the top side.

13. A high-speed printer having a frame (5) and a feeding mechanism (6) and a receiving mechanism (7) arranged on the frame (5); On the frame (5) between the feeding mechanism (6) and the receiving mechanism (7), a sequential conveying path for a single printing medium is formed from supply to receipt; The sequential conveying path is equipped with printing mechanisms that print corresponding graphic and text information on the currently conveyed printing medium. Its features are: The sequential conveying path has at least a first horizontal conveying section (A), a first vertical conveying section (B), and a second horizontal conveying section (C) connected in sequence in the height direction of the frame (5), with the second horizontal conveying section (C) arranged above the first horizontal conveying section (A). Each conveying section is equipped with at least one conveying mechanism for conveying a single sheet of printing media in a set direction, and the conveying mechanism on the first vertical conveying section (B) is the vertical conveying device structure as described in any one of claims 1 to 12.

14. The high-speed printer according to claim 13, characterized in that: The sequential conveying path also includes a second vertical conveying section (D) sequentially connected to the second horizontal conveying section (C), and a third horizontal conveying section (E) sequentially connected to the second vertical conveying section (D), wherein the third horizontal conveying section (E) is arranged above the second horizontal conveying section (C). The second vertical conveying section (D) and the third horizontal conveying section (E) are each provided with at least one conveying mechanism for conveying a single sheet of printing media in a set direction, and the conveying mechanism on the second vertical conveying section (D) is the vertical conveying device structure as described in any one of claims 1 to 12.

15. The high-speed printer according to claim 13 or 14, characterized in that: The high-speed printer has two sets of printing mechanisms arranged on a sequential conveying path; The first printing mechanism (A2) is arranged on the first flat conveying section (A) of the sequential conveying path; The second printing mechanism (C2) is arranged on the second flat conveying section (C) of the sequential conveying path; The first printing mechanism (A2) and / or the second printing mechanism (C2) on the sequential conveying path print graphic information on the corresponding side of the current single printing medium being conveyed.

16. The high-speed printer according to claim 15, characterized in that: Corresponding to the set conveying direction of the printing medium on the sequential conveying path, a first correction mechanism (A1) is provided upstream of the first printing mechanism (A2), arranged on the first flat conveying section (A), for correcting the deviation of the conveyed single printing medium. And / or, upstream of the second printing mechanism (C2), there is a second correction mechanism (C1) arranged on the second flat conveying section (C) for correcting the deviation of the conveyed single printing medium.

17. The high-speed printer according to claim 16, characterized in that: The feeding mechanism (6) of the high-speed printer is connected to the upstream end of the first flat conveying section (A), and the printing medium is conveyed in a sequential conveying path from bottom to top within the high-speed printer.

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