A digital printing apparatus with paper drying

Abstract

The utility model is suitable for paper drying device technical field provides a kind of digital printing equipment with paper drying, including a set of mechanical linkage mechanism.The mechanism is through the first local gear and second local gear fixed on the hole sleeve of drying conveying mechanism, when the hole sleeve rotates, alternately engages with a double face rack, converts the rotary motion of conveying paper into the up-down reciprocating motion of rack.Rack drives the reciprocating motion of piston in thermostatic water tank system through push-pull rod, to pump the hot liquid (hot water or hot oil) in thermostatic water tank into the air loop of drying conveying mechanism.This design ingeniously uses the mechanical energy of paper conveying process itself as power source, drives hot liquid circulation system.No need to configure independent motor or pump for drying function, greatly simplifies structure, significantly reduces the overall energy consumption of equipment, realizes green, energy-saving operation mode.

Description

Technical Field

[0001] This utility model belongs to the technical field of paper drying devices, and particularly relates to a digital printing device with paper drying function. Background Technology

[0002] The loading and unloading mechanisms of a digital printing press, especially the unwinding (loading) and rewinding (unloading) components, are crucial for ensuring continuous and stable production and print quality. A typical system includes an unwinding roller (for holding the unprinted roll of material), a rewinding roller (for taking up the printed material), and a series of guide rollers, tension control mechanisms, and drive units. The workflow is generally as follows: material is drawn from the unwinding roller, passes through the printing unit, and is then wound up by the rewinding roller.

[0003] In the field of digital printing, to ensure print quality, especially to prevent smudging or blurring caused by undried ink, paper typically needs to be dried before entering the printing press or after printing. Current technologies often employ independent electric heating rollers or hot air devices for paper preheating or drying. These devices usually require separate power and heating systems, leading to increased energy consumption and complex structures. Furthermore, electric heating methods are prone to uneven heating or inaccurate temperature control, resulting in localized overheating and deformation of the paper or poor preheating, affecting subsequent printing quality. Particularly for paper requiring a smooth and uniform entry into the printing press, how to achieve efficient and uniform preheating while simplifying equipment structure and reducing energy consumption has become a pressing problem in this field. Utility Model Content

[0004] This invention provides a digital printing device with paper drying function, which aims to solve the problem that current digital printing devices cannot achieve efficient and uniform preheating.

[0005] This invention is implemented as follows: a digital printing device with paper drying function, comprising:

[0006] Digital printing press;

[0007] The drying conveyor mechanism located on one side of the digital printing press is used to assist in feeding the paper to be processed into the digital printing press and to preheat and dry the paper to be processed.

[0008] A bracket installed on one side of the digital printing press to support the drying conveying mechanism;

[0009] A constant temperature water tank is installed on one side of the drying and conveying mechanism for conveying hot liquid to the drying and conveying mechanism.

[0010] The linkage mechanism connecting the drying conveying mechanism and the constant temperature water tank can drive the constant temperature water tank during the process of the drying conveying mechanism conveying the paper to be processed.

[0011] Preferably, the drying conveying mechanism includes:

[0012] Two rows of idler frames, one row of idler frames consists of two long hollow frames that are fixedly connected to each other, and the other row of idler frames consists of one long hollow frame and two short hollow frames, with the two short hollow frames fixedly connected to both ends of the long hollow frame respectively;

[0013] Several outer cylinders connected between two rows of idler rollers are rotated to constrain and guide the paper to be processed.

[0014] Preferably, an inner rod is provided on the inner side of the outer cylinder, and a cavity is formed between the inner rod and the outer cylinder. The inner rod and the outer cylinder are fixedly connected by a connecting block.

[0015] Preferably, the short and long hollow frames are rotatably perforated by a perforated sleeve, the inner rod extends to the inside of the perforated sleeve and is fixedly connected to one end of the perforated sleeve, and a cavity is formed between the perforated sleeve and the inner rod.

[0016] Preferably, a chain drive assembly is connected between two adjacent perforated sleeves, and a motor for driving the chain drive assembly is fixedly installed on the outside of the long hollow frame.

[0017] Preferably, a temporary storage cylinder is provided on one side of the constant temperature water tank, a piston is slidably sleeved inside the temporary storage cylinder, a second one-way valve pipe is fixedly connected to the outer wall of the temporary storage cylinder, the top end of the second one-way valve pipe is fixedly connected to the bottom of one of the short empty frames, a first one-way valve pipe is fixedly connected to the outer wall of the temporary storage cylinder and connected to the inner cavity of the constant temperature water tank, a drain pipe is fixedly connected to the top of the constant temperature water tank, and the upper end of the drain pipe is fixedly connected to the top of another short empty frame.

[0018] Preferably, the linkage mechanism includes a first partial gear and a second partial gear, which are respectively fixedly sleeved on the outer walls of two adjacent perforated sleeves.

[0019] Preferably, a double-sided rack is provided between the first partial gear and the second partial gear, a T-shaped slide rod is fixedly connected to the side wall of the long hollow frame, the double-sided rack is slidably connected to the T-shaped slide rod, a push-pull rod is fixedly connected to the bottom end of the double-sided rack, and the push-pull rod slides through the top of the temporary storage cylinder and is fixedly connected to the piston.

[0020] Compared with related technologies, the digital printing equipment with paper drying function provided by this utility model has the following advantages:

[0021] 1. Achieves energy recycling and zero-additional-energy-consumption-driven drying: This utility model innovatively incorporates a mechanical linkage mechanism. This mechanism, through a first and second partial gear fixed to a perforated sleeve of the drying conveyor, alternately meshes with a double-sided rack as the perforated sleeve rotates, converting the rotational motion of the paper conveying process into the reciprocating motion of the rack. The rack drives the piston within the constant-temperature water tank system via a push-pull rod, thereby pumping the hot liquid (hot water or hot oil) from the constant-temperature water tank into the cavity circuit of the drying conveyor mechanism. This design cleverly utilizes the mechanical energy of the paper conveying process itself as a power source to drive the hot liquid circulation system. It eliminates the need for a separate motor or pump for the drying function, greatly simplifying the structure, significantly reducing the overall energy consumption of the equipment, and achieving a green and energy-saving operation mode.

[0022] 2. Provides uniform, stable, and controllable contact preheating, improving printing quality: This invention constructs a closed-loop hot liquid circulation system. After being pumped from the constant-temperature water tank, the hot liquid flows sequentially through the short hollow frame, the cavity formed by the perforated sleeve and the inner rod, the cavity between the inner rod and the outer cylinder, the long hollow frame, and finally returns to the constant-temperature water tank through the drain pipe. During this process, heat is conducted to the paper in contact with it through the metal cylinder wall. The hot liquid circulates in an S-shaped path within the closed loop, ensuring that heat is evenly transferred to the entire surface of the outer cylinder. Compared to point-source electric heating, this planar heat conduction method provides extremely uniform and gentle contact preheating for the paper, effectively avoiding localized overheating and deformation, ensuring that the paper enters the printing press with optimal flatness and temperature, fundamentally improving the quality of the printed matter. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the assembly structure of the linkage mechanism of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the drying and conveying mechanism of this utility model;

[0026] Figure 4 This is a schematic diagram of the constant temperature water tank structure of this utility model.

[0027] In the picture:

[0028] 1. Digital printing press;

[0029] 2. Constant temperature water tank; 201. First one-way valve pipe; 202. Temporary storage cylinder; 203. Piston; 204. Second one-way valve pipe; 205. Drain pipe;

[0030] 3. Drying conveyor mechanism; 301. Long hollow frame; 302. Short hollow frame; 303. Outer cylinder; 304. Inner rod; 305. Connecting block; 306. Perforated sleeve; 307. Clamping cavity; 308. Motor; 309. Chain drive assembly;

[0031] 4. Paper to be processed;

[0032] 5. Linkage mechanism; 501. Double-sided rack; 502. T-shaped slide bar; 503. First partial gear; 504. Second partial gear; 505. Push-pull rod;

[0033] 6. Bracket. Detailed Implementation

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] Example 1

[0037] A preferred embodiment of the digital printing equipment with paper drying provided by this utility model is, for example... Figures 1 to 4 As shown: A digital printing device with paper drying includes a digital printing machine 1; a drying conveying mechanism 3 disposed on one side of the digital printing machine 1 for assisting the paper to be processed 4 to be fed into the digital printing machine 1 and for preheating and drying the paper to be processed 4; and a bracket 6 disposed on one side of the digital printing machine 1 for supporting the drying conveying mechanism 3.

[0038] Specifically, the drying conveying mechanism 3 includes two rows of idler frames. One row of idler frames consists of two long hollow frames 301 fixedly connected to each other, and the other row of idler frames consists of one long hollow frame 301 and two short hollow frames 302. The two short hollow frames 302 are fixedly connected to both ends of the long hollow frame 301. Several outer cylinders 303 are rotatably connected between the two rows of idler frames, and the paper 4 to be processed is constrained and guided by the several outer cylinders 303. An inner rod 304 is provided inside the outer cylinder 303, and a cavity is formed between the inner rod 304 and the outer cylinder 303. The inner rod 304 and the outer cylinder 303 are fixedly connected by a connecting block 305. A perforated sleeve 306 rotatably passes through the inner sides of the short hollow frames 302 and the long hollow frames 301. The inner rod 304 extends to the inner side of the perforated sleeve 306 and is fixedly connected to one end of the perforated sleeve 306. A clamping cavity 307 is formed between the perforated sleeve 306 and the inner rod 304. A chain drive assembly 309 is connected between two adjacent perforated sleeves 306, and a motor 308 that drives the chain drive assembly 309 is fixedly installed on the outside of the long hollow frame 301.

[0039] In this embodiment, during the process of guiding the paper 4 to be processed into the digital printing machine 1 through the drying conveying mechanism 3, the motor 308 is started. The motor 308 drives the chain drive assembly 309 through its output shaft. It should be noted that the chain drive assembly 309 consists of two sprockets and a chain connecting the two sprockets. The sprockets are fixedly connected to the perforated sleeves 306. The sprocket on the chain drive assembly 309 located in the middle position is coaxially connected to the other sprockets. When the motor 308 drives the chain drive assembly 309, multiple perforated sleeves 306 rotate synchronously in the long empty frame 301 or the short empty frame 302. The perforated sleeves 306 drive the inner rod 304 to rotate. The inner rod 304 drives the outer cylinder 303 to rotate through the connecting block 305, which assists in guiding and conveying the paper 4 to be processed.

[0040] Example 2

[0041] Based on Embodiment 1, a preferred embodiment of the digital printing apparatus with paper drying provided by this utility model is, for example... Figures 1 to 4 As shown: a constant temperature water tank 2 is set on one side of the drying conveying mechanism 3 for conveying hot liquid to the drying conveying mechanism 3; a linkage mechanism 5 is connected between the drying conveying mechanism 3 and the constant temperature water tank 2, which can drive the constant temperature water tank 2 during the process of the drying conveying mechanism 3 conveying the paper to be processed 4.

[0042] Specifically, a temporary storage cylinder 202 is provided on one side of the constant temperature water tank 2. A piston 203 is slidably sleeved inside the temporary storage cylinder 202. A second one-way valve pipe 204 is fixedly connected to the outer wall of the temporary storage cylinder 202. The top end of the second one-way valve pipe 204 is fixedly connected to the bottom of one of the short empty frames 302. A first one-way valve pipe 201, which is connected to the inner cavity of the constant temperature water tank 2, is fixedly connected to the outer wall of the temporary storage cylinder 202. A drain pipe 205 is fixedly connected to the top end of the constant temperature water tank 2. The upper end of the drain pipe 205 is fixedly connected to the top end of another short empty frame 302.

[0043] Specifically, the linkage mechanism 5 includes a first partial gear 503 and a second partial gear 504, which are respectively fixedly sleeved on the outer walls of two adjacent perforated sleeves 306. A double-sided rack 501 is provided between the first partial gear 503 and the second partial gear 504. A T-shaped slide rod 502 is fixedly connected to the side wall of the long hollow frame 301. The double-sided rack 501 is slidably connected to the T-shaped slide rod 502. A push-pull rod 505 is fixedly connected to the bottom end of the double-sided rack 501. The push-pull rod 505 slides through the top of the temporary storage cylinder 202 and is fixedly connected to the piston 203.

[0044] In this embodiment, during the rotation of the perforated sleeve 306, the first partial gear 503 and the second partial gear 504 can be driven to rotate synchronously. During the rotation of the first partial gear 503 and the second partial gear 504, they can alternately mesh with the double-sided rack 501, enabling the double-sided rack 501 to move up and down reciprocally. The double-sided rack 501 slides the piston 203 up and down inside the temporary storage cylinder 202 via the push-pull rod 505. When the piston 203 moves upward, the first one-way valve tube 201... When the piston 203 moves down, the one-way valve on the first one-way valve pipe 201 is closed, and the one-way valve at the connection between the second one-way valve pipe 204 and the temporary storage cylinder 202 is closed, allowing the hot water or hot oil inside the constant temperature water tank 2 to enter the interior of the temporary storage cylinder 202 through the first one-way valve pipe 201. When the piston 203 moves down, the one-way valve on the first one-way valve pipe 201 is closed, and the one-way valve at the connection between the second one-way valve pipe 204 and the temporary storage cylinder 202 is opened. The piston 203 then transports the hot oil or hot water temporarily stored inside the temporary storage cylinder 202 to the short empty frame 302 through the second one-way valve pipe 204.

[0045] In this embodiment, reference Figure 3Hot oil or hot water, delivered to the inside of the short hollow frame 302 via the second one-way valve pipe 204, enters the inner cavity of the short hollow frame 302 through the hole in the perforated sleeve 306, and then enters the cavity formed between the inner rod 304 and the outer cylinder 303 through the clamping cavity 307. The hot oil or hot water flows into the long hollow frame 301 through the cavity between the inner rod 304 and the outer cylinder 303. In this way, the hot oil or hot water circulates in an S-shaped loop in the closed loop formed by the short hollow frame 302, the cavity between the outer cylinder 303 and the inner rod 304, and the long hollow frame 301. The constant temperature liquid heated by the liquid makes contact with the paper and conducts heat, so that the outer cylinder 303 can guide and preheat the paper 4 to be processed. Finally, it flows back to the constant temperature water tank 2 through the drain pipe 205 on another short hollow frame 302 for heating and constant temperature.

[0046] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0047] It should be understood that the disclosed apparatus can be implemented in other ways, as illustrated in the embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A digital printing apparatus with paper drying function, characterized in that, include: Digital printing press (1); The drying conveying mechanism (3) located on one side of the digital printing machine (1) is used to assist the paper to be processed (4) in feeding into the digital printing machine (1) and to preheat and dry the paper to be processed (4); A bracket (6) is provided on one side of the digital printing press (1) to support the drying conveying mechanism (3); A constant temperature water tank (2) is set on one side of the drying and conveying mechanism (3) for conveying hot liquid to the drying and conveying mechanism (3); The linkage mechanism (5) connected between the drying conveying mechanism (3) and the constant temperature water tank (2) can drive the constant temperature water tank (2) during the process of the drying conveying mechanism (3) conveying the paper to be processed (4).

2. The digital printing equipment with paper drying as described in claim 1, characterized in that, The drying conveying mechanism (3) includes: Two rows of idler frames, one row of idler frames consists of two long empty frames (301) fixedly connected to each other, and the other row of idler frames consists of one long empty frame (301) and two short empty frames (302), with the two short empty frames (302) fixedly connected to both ends of the long empty frame (301); A number of outer cylinders (303) connected between two rows of roller frames are rotated to constrain and guide the paper (4) to be processed.

3. A digital printing apparatus with paper drying as described in claim 2, characterized in that, An inner rod (304) is provided on the inner side of the outer cylinder (303), and a cavity is formed between the inner rod (304) and the outer cylinder (303). The inner rod (304) and the outer cylinder (303) are fixedly connected by a connecting block (305).

4. A digital printing apparatus with paper drying as described in claim 3, characterized in that, The short hollow frame (302) and the long hollow frame (301) are rotatably penetrated by a perforated sleeve (306), and the inner rod (304) extends to the inside of the perforated sleeve (306) and is fixedly connected to one end of the perforated sleeve (306). A cavity (307) is formed between the perforated sleeve (306) and the inner rod (304).

5. A digital printing apparatus with paper drying as described in claim 4, characterized in that, A chain drive assembly (309) is connected between two adjacent perforated sleeves (306), and a motor (308) for driving the chain drive assembly (309) is fixedly installed on the outside of the long hollow frame (301).

6. A digital printing apparatus with paper drying as described in claim 5, characterized in that, A temporary storage cylinder (202) is provided on one side of the constant temperature water tank (2). A piston (203) is slidably sleeved on the inner side of the temporary storage cylinder (202). A second one-way valve pipe (204) is fixedly connected to the outer wall of the temporary storage cylinder (202). The top end of the second one-way valve pipe (204) is fixedly connected to the bottom of one of the short empty frames (302). A first one-way valve pipe (201) connected to the inner cavity of the constant temperature water tank (2) is fixedly connected to the top end of the constant temperature water tank (2). A drain pipe (205) is fixedly connected to the top end of the constant temperature water tank (2). The upper end of the drain pipe (205) is fixedly connected to the top end of another short empty frame (302).

7. A digital printing apparatus with paper drying as described in claim 6, characterized in that, The linkage mechanism (5) includes a first local gear (503) and a second local gear (504), which are respectively fixedly sleeved on the outer walls of two adjacent perforated sleeves (306).

8. A digital printing apparatus with paper drying as described in claim 7, characterized in that, A double-sided rack (501) is provided between the first partial gear (503) and the second partial gear (504). A T-shaped slide rod (502) is fixedly connected to the side wall of the long hollow frame (301). The double-sided rack (501) is slidably connected to the T-shaped slide rod (502). A push-pull rod (505) is fixedly connected to the bottom end of the double-sided rack (501). The push-pull rod (505) slides through the top of the temporary storage cylinder (202) and is fixedly connected to the piston (203).

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