A three-color water-based printing press

Abstract

This utility model relates to the field of printing press technology, specifically a three-color water-based printing press, including a limiting rail, a cleaning mechanism, and a printing unit body. Multiple sets of mounting holes are evenly distributed on the limiting rail. The cleaning mechanism is located at one end of the limiting rail. Three printing unit bodies are provided, each with a moving wheel at its bottom, which is rotatably connected to the limiting rail. A limiting mechanism is provided on each printing unit body, and the three printing unit bodies are sequentially limited on the limiting rail by their respective limiting mechanisms. This utility model, through the cleaning mechanism, facilitates the removal of fibers and dust adhering to the surface of the substrate before conveying it into the printing unit body, improving the cleanliness of the substrate surface and preventing contamination of the printing unit body, while also improving printing quality. The limiting mechanism and limiting rail facilitate the assembly, disassembly, and repair of the printing unit bodies, providing convenience for use.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically a three-color water-based printing press. Background Technology

[0002] Water-based printing presses are a type of letterpress printing press. Their principle is to first transfer the image onto a printing plate, and then from the plate to the paper. Based on the number of colors printed in a single pass, they can be categorized as single-color, two-color, three-color, and multi-color printing presses. Commonly used multi-color printing presses typically combine multiple single-color water-based printing presses as independent printing units to form a multi-color printing production line, with each unit connected by a conveyor mechanism.

[0003] Chinese Patent CN213733972U discloses a three-color water-based printing press, which includes a frame and printing units mounted on top of the frame. The conveying device includes a conveyor belt and a drive assembly for driving the belt to rotate. The drive assembly includes a drive motor mounted on the frame and a transmission roller fixed to the output shaft of the drive motor. Correcting plates are symmetrically arranged along the feeding direction of the conveyor belt. A guide plate is fixed to one end of the correcting plate near the feed end of the conveyor belt, and the angle between the guide plate and the horizontal direction gradually decreases along the direction away from the correcting plate. This application has the effect of maintaining the relative printing positions of the substrate during transmission between the printing units of each color, avoiding printing misalignment, and improving printing quality.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: if the substrate surface is contaminated with fibers or dust and is directly sent into the three-color water-based printing press for printing, it will not only cause pollution to the three-color water-based printing press but also interfere with the printing quality. Furthermore, the three printing units are not easy to separate, which brings inconvenience to the staff for inspection and cleaning. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a three-color water-based printing press.

[0006] The technical solution of this utility model is as follows: A three-color water-based printing machine includes a limiting rail with multiple sets of mounting holes evenly distributed on it; a cleaning mechanism disposed at one end of the limiting rail, the cleaning mechanism including a mounting frame mounted on the front end of the limiting rail via a lifting component; a U-shaped frame connected to the top of the mounting frame via a lifting component; two sets of cleaning rollers, each set of cleaning rollers being rotatably connected to one end of the mounting frame and the U-shaped frame respectively via a motor drive, the other end of the cleaning rollers being rotatably connected to a connecting pipe, the connecting pipe being mounted on the other end of the mounting frame or the U-shaped frame, and the connecting pipe being connected to an external dust collection component; multiple sets of dust collection ports disposed on the cleaning rollers and communicating with the inner cavity of the cleaning rollers; and three printing unit bodies, each set having a moving wheel at its bottom, the moving wheel being rotatably connected to the limiting rail, and a limiting mechanism disposed on the printing unit body, the three sets of printing unit bodies being sequentially limited on the limiting rail by corresponding limiting mechanisms.

[0007] Preferably, the limiting rail includes a base plate and guide seats, which are provided in two sets. The two sets of guide seats are symmetrically installed on the base plate. The side wall of the guide seat has three sets of insertion holes, which correspond to the limiting mechanism. The movable wheel at the bottom of the printing unit body is connected to the inner cavity of the guide seat.

[0008] Preferably, the guide seat has an inclined portion at the end away from the cleaning mechanism.

[0009] Preferably, the limiting mechanism includes a mounting plate mounted on the side wall of the printing unit body, a slider slidably connected to the mounting plate, the slider being L-shaped; a limiting rod slidably inserted into the mounting plate, an abutting plate mounted on the limiting rod, the abutting plate abutting against the mounting plate, the insertion end of the limiting rod being inserted into a hole on the guide seat; and a spring sleeved on the limiting rod, the spring connecting the end of the limiting rod and the abutting plate.

[0010] Preferably, multiple sets of slots are evenly distributed on the outer circumferential surface of the cleaning roller, and soft brushes are detachably installed in the slots.

[0011] Preferably, the mounting frame is adjustablely provided with a guide plate, which is inclinedly positioned between the cleaning roller and a set of printing unit bodies at the output end of the cleaning mechanism. One end of the guide plate is rotatably connected to one end of the mounting frame via a rotating shaft, and the other end of the guide plate is equipped with a rotating rod that passes through and rotatably connects to the mounting frame.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This utility model uses a cleaning mechanism to facilitate the removal of fibers and dust adhering to the surface of the substrate before conveying it to the printing unit body, thereby improving the cleanliness of the substrate surface, avoiding contamination of the printing unit body, and improving printing quality; the setting of the limiting mechanism and limiting rail facilitates the splicing, assembly or disassembly of the printing unit body, making it convenient for inspection and cleaning of the printing unit body and providing convenience for use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the limiting rail structure of this utility model;

[0015] Figure 3 This is a schematic diagram of part A of the present invention;

[0016] Figure 4 This is a schematic diagram of the cleaning roller structure of this utility model;

[0017] Figure 5 This is a side view of the connection method of the two sets of cleaning rollers of this utility model.

[0018] Reference numerals: 1. Base plate; 101. Reinforcing rib; 102. Guide seat; 103. Insertion hole; 2. Printing unit body; 3. Mounting plate; 301. Slider; 302. Limiting rod; 303. Abutment plate; 304. Spring; 4. Mounting bracket; 401. U-shaped bracket; 5. Cleaning roller; 501. Dust suction port; 502. Soft brush; 503. Connecting pipe; 6. Guide plate; 601. Rotating rod. Detailed Implementation

[0019] Example 1

[0020] like Figure 1 , Figure 4 and Figure 5 As shown, the present invention proposes a three-color water-based printing machine, including a limiting rail, a cleaning mechanism, and a printing unit body 2; multiple sets of mounting holes are evenly opened on the limiting rail; the cleaning mechanism is set at one end of the limiting rail; the printing unit body 2 is provided with three sets, and the bottom of the printing unit body 2 is provided with a moving wheel, which is rotatably connected to the limiting rail; the printing unit body 2 is provided with a limiting mechanism, and the three sets of printing unit bodies 2 are respectively limited on the limiting rail by the corresponding limiting mechanism.

[0021] The cleaning mechanism includes a mounting frame 4, a U-shaped frame 401, a cleaning roller 5, and a suction port 501. The mounting frame 4 is installed at the front end of the limit rail via a lifting component. The U-shaped frame 401 is connected to the top of the mounting frame 4 via a lifting component, which is a hydraulic rod. There are two sets of cleaning rollers 5. Both sets of cleaning rollers 5 are driven by a motor and rotatably connected to one end of the mounting frame 4 and the U-shaped frame 401, respectively. The other end of the cleaning roller 5 is rotatably connected to a connecting pipe 503. The connecting pipe 503 is installed at the other end of the mounting frame 4 or the U-shaped frame 401 and is connected to an external suction assembly. There are multiple sets of suction ports 501 that communicate with the inner cavity of the cleaning roller 5. The multiple sets of suction ports 501 are evenly distributed on the cleaning roller 5.

[0022] In this embodiment, three sets of printing unit bodies 2 are sequentially installed on the limiting rail by a limiting mechanism. The lifting mechanism is activated to adjust the height of the mounting frame 4, ensuring that the height of the lower cleaning roller 5 matches that of the printing unit body 2. Simultaneously, the lifting mechanism drives the U-shaped frame 401 to adjust the height of the corresponding cleaning roller 5, ensuring the spacing between the two sets of cleaning rollers 5 adapts to the thickness of the substrate. Rotating the rotating rod 601 causes the guide plate 6 to rotate at a suitable angle, allowing it to support the lower cleaning roller 5 and the printing unit body 2, facilitating the guidance of the cleaned substrate into the printing unit body 2. An external dust collection component is connected to two sets of connecting pipes 503 via a flexible hose. The motor is activated to drive the cleaning roller 5 to rotate. The two sets of cleaning rollers 5 rotate in opposite directions. The two sets of cleaning rollers 5 not only clean the surface of the substrate but also... The substrate is conveyed into the printing unit 2 to improve its cleanliness, enhance printing quality, and reduce contamination of the printing unit 2. Simultaneously, an external dust collection component absorbs fibers and dust from the substrate surface through multiple suction ports 501, connecting pipes 503, and hoses. Impurities accumulate in the dust collection component, which consists of a dust collection box, an air pump installed at the output end of the dust collection box, and a filter screen installed inside the dust collection box. The hose is connected to the input end of the dust collection box. When the two sets of cleaning rollers 5 rotate, the multiple sets of soft brushes 502 can scrape up fibers that are difficult to adhere to on the substrate surface, making them easier for the soft brushes 502 to absorb. When a certain amount of impurities adhere to the soft brushes 502, in order to avoid secondary contamination of the substrate and interference with printing quality, the soft brushes 502 can be slid out along the slot for cleaning and replacement.

[0023] Example 2

[0024] like Figures 1 to 3As shown, the present invention proposes a three-color water-based printing machine. Compared with Embodiment 1, the limiting rail includes a base plate 1 and a guide seat 102. The base plate 1 is fixedly connected to the mounting point by bolts. The base plate 1 is provided with multiple sets of reinforcing ribs 101 to improve the overall strength of the base plate 1 and reduce its own weight, making it easy to install. Two sets of guide seats 102 are provided, and the two sets of guide seats 102 are symmetrically installed on the base plate 1. Three sets of insertion holes 103 are opened on the side wall of the guide seat 102. The insertion holes 103 correspond to the limiting mechanism. The moving wheel at the bottom of the printing unit body 2 is connected to the inner cavity of the guide seat 102.

[0025] Furthermore, the guide seat 102 is provided with an inclined part at the end away from the cleaning mechanism, which facilitates the entry and exit of the moving wheels and saves more physical effort.

[0026] Furthermore, the limiting mechanism includes a mounting plate 3, a limiting rod 302, and a spring 304. The mounting plate 3 is mounted on the side wall of the printing unit body 2. A slider 301 is slidably connected to the mounting plate 3. The slider 301 is L-shaped. A T-shaped slider is provided at the sliding end of the mounting plate 3. A groove is provided on the mounting plate 3. The T-shaped slider is slidably connected to the groove. The limiting rod 302 is slidably inserted into the mounting plate 3. An abutment plate 303 is mounted on the limiting rod 302. The abutment plate 303 is L-shaped and abuts against the mounting plate 3. The insertion end of the limiting rod 302 is inserted into the insertion hole 103 on the guide seat 102. The spring 304 is sleeved on the limiting rod 302 and connects the end of the limiting rod 302 and the abutment plate 303.

[0027] In this embodiment, when the three sets of printing unit bodies 2 need to be inspected and cleaned, the abutment plate 303 is slid away from the mounting plate 3, so that the spring 304 is compressed. At this time, the insertion end of the limiting rod 302 is away from the insertion hole 103 on the guide seat 102. Then the slider 301 is slid down along the mounting plate 3 until the slider 301 abuts against the abutment plate 303. At this time, the printing unit body 2 is no longer limited by the guide seat 102. The printing unit body 2 can be moved out of the two sets of guide seats 102 by the moving wheel, so that the three sets of printing unit bodies 2 can be separated, making it convenient to inspect and clean them.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A three-color water-based printing press, characterized in that, include The limiting rail has multiple sets of mounting holes evenly spaced on it; The cleaning mechanism, which is located at one end of the limit rail, includes... Mounting bracket (4) is installed at the front end of the limit rail via a lifting component; The U-shaped frame (401) is connected to the top of the mounting frame (4) via a lifting component; The cleaning roller (5) is provided in two sets. Both sets of cleaning rollers (5) are rotatably connected to one end of the mounting frame (4) and the U-shaped frame (401) respectively by motor drive. The other end of the cleaning roller (5) is rotatably connected to the connecting pipe (503). The connecting pipe (503) is installed at the other end of the mounting frame (4) or the U-shaped frame (401). The connecting pipe (503) is connected to the external dust collection component. And a suction port (501), which is provided in multiple sets and communicates with the inner cavity of the cleaning roller (5), and the multiple suction ports (501) are evenly distributed on the cleaning roller (5); And the printing unit body (2) is provided in three sets. The bottom of the printing unit body (2) is provided with a moving wheel, which is connected to the limiting rail in a rolling manner. The printing unit body (2) is provided with a limiting mechanism. The three sets of printing unit bodies (2) are respectively limited on the limiting rail by the corresponding limiting mechanism.

2. A three-color water-based printing press according to claim 1, characterized in that, The limiting rail includes a base plate (1); And guide seats (102), which are provided in two sets. The two sets of guide seats (102) are symmetrically installed on the base plate (1). Three sets of insertion holes (103) are opened on the side wall of the guide seat (102). The insertion holes (103) correspond to the limiting mechanism. The moving wheel at the bottom of the printing unit body (2) is connected to the inner cavity of the guide seat (102).

3. A three-color water-based printing press according to claim 2, characterized in that, An inclined section is provided on the guide seat (102) at the end away from the cleaning mechanism.

4. A three-color water-based printing press according to claim 2, characterized in that, Limiting mechanisms include Mounting plate (3) is mounted on the side wall of printing unit body (2). A slider (301) is slidably connected to the mounting plate (3). The slider (301) is L-shaped. The limiting rod (302) is slidably inserted into the mounting plate (3). An abutment plate (303) is installed on the limiting rod (302). The abutment plate (303) abuts against the mounting plate (3). The insertion end of the limiting rod (302) is inserted into the insertion hole (103) on the guide seat (102). And a spring (304) which is sleeved on the limiting rod (302) and the spring (304) connects the end of the limiting rod (302) and the abutment plate (303).

5. A three-color water-based printing press according to claim 1, characterized in that, Multiple sets of slots are evenly opened on the outer circumferential surface of the cleaning roller (5), and soft brushes (502) can be detachably installed in the slots.

6. A three-color water-based printing press according to claim 1, characterized in that, The mounting frame (4) is adjustablely provided with a guide plate (6). The guide plate (6) is inclined between the cleaning roller (5) and a set of printing unit bodies (2) at the output end of the cleaning mechanism. One end of the guide plate (6) is rotatably connected to one end of the mounting frame (4) through a rotating shaft. The other end of the guide plate (6) is equipped with a rotating rod (601). The rotating rod (601) passes through and is rotatably connected to the mounting frame (4).

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