A screen plate cleaning device for a printing machine

Abstract

This utility model discloses a screen cleaning device for printing presses, including a cleaning tank, a middle frame fixed in the middle of the inner side of the cleaning tank, a positioning groove opened at the bottom of the inner side of the middle frame, the bottom end of the positioning groove communicating with the middle of the drain hole, the drain hole being opened at the bottom of the middle frame, and a stabilizing hole opened at the top of the middle frame; a threaded rod is installed through the stabilizing hole, a locking nut is installed on the threaded rod, the bottom end of the threaded rod is connected and fixed to the top surface of the extrusion plate, and an anti-slip pad is installed on the bottom surface of the extrusion plate; a side frame is fixed at the end of the cleaning tank, and a servo motor is fixed at the top of the side frame. This screen cleaning device for printing presses adopts a novel structural design, which can not only quickly position screens of different sizes, but also allows the cleaning mechanism to clean the screens simultaneously from both sides, greatly improving cleaning efficiency. At the same time, through a vertical drive mechanism, the cleaning mechanism can move vertically to thoroughly clean the screens.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically to a screen cleaning device for printing presses. Background Technology

[0002] The function of a screen printing press is to allow ink to pass selectively through during the printing process, thereby forming the desired pattern on the substrate. It thoroughly, efficiently, and safely removes residual ink, photosensitive emulsion, and other contaminants from the screen's perforations, restoring them to their original flow for the next printing.

[0003] Currently, manual cleaning of printing press stencils is inefficient and cannot thoroughly clean them. While some automated cleaning equipment offers fast cleaning speeds and good results, its complex structure and high production and maintenance costs make it unsuitable. Therefore, a stencil cleaning device for printing presses needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a screen cleaning device for printing presses to solve at least one of the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a screen cleaning device for a printing press, comprising a cleaning tank, a middle frame fixed in the middle of the inner side of the cleaning tank, a positioning groove provided at the bottom of the inner side of the middle frame, the bottom end of the positioning groove communicating with the middle of the drain hole, the drain hole being opened at the bottom of the middle frame, and a stabilizing hole being opened at the top of the middle frame. A threaded rod is installed through the stabilizing hole, a locking nut is installed on the threaded rod, the bottom end of the threaded rod is connected and fixed to the top surface of the extrusion plate, and an anti-slip pad is installed on the bottom surface of the extrusion plate. A side frame is fixed at the end of the cleaning tank, a servo motor is fixed at the top of the side frame, a side threaded rod is installed at the bottom output end of the servo motor, the bottom end of the side threaded rod is rotatably connected to the bottom surface of the inner side of the cleaning tank, a movable plate is installed at the top of the side threaded rod, a liquid supply pipe is fixed near the middle frame end of the movable plate, and a high-pressure nozzle is installed obliquely on the liquid supply pipe.

[0006] Preferably, the front view cross-sectional shape of the positioning groove is an isosceles trapezoid, and the side slope of the positioning groove is set as a frosted surface.

[0007] Preferably, the drainage holes are evenly spaced and are horizontally opened through the bottom of the middle frame.

[0008] Preferably, the threaded rod and the stabilizing hole are slidably connected, and locking nuts are symmetrically installed on the threaded rods on the upper and lower sides of the stabilizing hole. The threaded rods are symmetrically distributed about the center of the extrusion plate.

[0009] Preferably, the side frames are symmetrically distributed about the center of the middle frame, and the side view shape of the side frames is an inverted "U" shape.

[0010] Preferably, the side threaded rods are threadedly connected to the movable plate, and the side threaded rods are symmetrically distributed about the center of the movable plate.

[0011] The screen plate cleaning device for a printing machine of the present utility model has the following beneficial effects: Adopting a new structural design, it can not only quickly position screen plates of different sizes, but also the cleaning mechanism can synchronously clean the screen plate from both sides, greatly improving the cleaning efficiency. At the same time, through the vertical driving mechanism, the cleaning mechanism can move vertically to comprehensively clean the screen plate; 1. By sliding the middle threaded rod vertically along the stable hole, the working height of the pressing plate is adjusted. The pressing plate moves downward to press the screen plate against the inner wall of the positioning groove, and the upper and lower surfaces of the top of the middle frame are pressed by the symmetrically distributed locking nuts to lock the middle frame, the pressing plate and the screen plate, facilitating high-pressure flushing with cleaning liquid; 2. By driving the side threaded rod to rotate by the servo motor, the movable plate is driven to move vertically with the liquid supply pipe and the high-pressure nozzle by using the threaded connection relationship, and the high-speed flowing cleaning liquid is used to efficiently clean the pollutants such as residual ink and photosensitive glue on the screen plate, improving the cleaning efficiency and cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a front view structural schematic diagram of the present utility model; Figure 2 It is a front view sectional structural schematic diagram of the present utility model; Figure 3 It is a side view sectional structural schematic diagram of the middle frame of the present utility model; Figure 4 It is a side view structural schematic diagram of the side frame, the movable plate and the liquid supply pipe of the present utility model.

[0014]

SYMBOLS OF MAIN COMPONENTS

[0015] The screen cleaning device for printing presses of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0019] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0020] Please see Figure 1-4, the present utility model provides a technical solution: a screen cleaning device for a printing machine, including a cleaning pool 1, a middle frame 2, a positioning groove 3, a drain hole 4, a stabilizing hole 5, a middle threaded rod 6, a locking nut 7, a pressing plate 8, an anti-slip pad 9, a side frame 10, a servo motor 11, a side threaded rod 12, a movable plate 13, a liquid supply pipe 14 and a high-pressure nozzle 15. In the middle of the inner side of the cleaning pool 1, a middle frame 2 is fixedly installed. At the bottom of the inner side of the middle frame 2, a positioning groove 3 is provided. The bottom end of the positioning groove 3 is connected to the middle part of the drain hole 4. The drain hole 4 is provided at the bottom of the middle frame 2. At the top of the middle frame 2, a stabilizing hole 5 is provided; The middle threaded rod 6 is installed through the stabilizing hole 5. A locking nut 7 is installed on the middle threaded rod 6. The bottom end of the middle threaded rod 6 is fixedly connected to the top surface of the pressing plate 8. An anti-slip pad 9 is installed on the bottom surface of the pressing plate 8; At the end of the cleaning pool 1, a side frame 10 is fixedly installed. At the top of the side frame 10, a servo motor 11 is fixedly installed. The bottom output end of the servo motor 11 is provided with a side threaded rod 12. The bottom end of the side threaded rod 12 is rotationally connected to the inner bottom surface of the cleaning pool 1. At the top of the side threaded rod 12, a movable plate 13 is installed. At the end of the movable plate 13 close to the middle frame 2, a liquid supply pipe 14 is fixedly installed. On the liquid supply pipe 14, a high-pressure nozzle 15 is installed obliquely.

[0021] In this example, the front view cross-section shape of the positioning groove 3 is an isosceles trapezoid. The side inclined surface of the positioning groove 3 is set as a matte surface. The above structural design enables the bottom of the screen with different widths to be stably fitted with the side inclined surface of the positioning groove 3, facilitating the installation and positioning of the screen.

[0022] In this example, the drain holes 4 are equally spaced. The drain holes 4 are horizontally penetrated and provided at the bottom of the middle frame 2. The above structural design can timely discharge the cleaning liquid, ink, photosensitive glue and other pollutants flushed into the positioning groove 3.

[0023] In this example, the middle threaded rod 6 is slidably connected to the stabilizing hole 5. Locking nuts 7 are symmetrically installed on the middle threaded rod 6 on the upper and lower sides of the stabilizing hole 5. The middle threaded rods 6 are symmetrically distributed with respect to the center of the pressing plate 8. The above structural design enables the middle threaded rod 6 to carry the pressing plate 8 and slide vertically along the stabilizing hole 5, conveniently adjusting the working height of the pressing plate 8, and pressing the top of the middle frame 2 through the symmetrically distributed locking nuts 7 to quickly fix the position of the middle threaded rod 6.

[0024] In this example, the side frames 10 are symmetrically distributed with respect to the center of the middle frame 2. The side view shape of the side frame 10 is an inverted "U" shape. The above structural design can stably install the servo motor 11 and the side threaded rod 12, providing a stable installation basis for the cleaning mechanism.

[0025] In this example, the side threaded rod 12 is threadedly connected to the movable plate 13. The side threaded rod 12 is symmetrically distributed about the center of the movable plate 13. The above structural design enables the side threaded rod 12 to stably drive the movable plate 13 to move vertically when rotating, thereby driving the liquid supply pipe 14 and the high-pressure nozzle 15 to move vertically for efficient cleaning.

[0026] Working principle: When in use, the mesh plate to be cleaned is vertically inserted into the positioning groove 3. The bottom two sides of the mesh plate are tightly fitted with the inner walls of the positioning groove 3. The symmetrically distributed locking nuts 7 are rotated away from the top and bottom surfaces of the middle frame 2. The threaded rod 6 is pushed down. The threaded rod 6, along with the extrusion plate 8 and the anti-slip pad 9, slides vertically down along the stabilizing hole 5 until the extrusion plate 8 and the anti-slip pad 9 stably extrude and fix the top of the mesh plate. The symmetrically distributed locking nuts 7 are rotated to press and fix the top and bottom surfaces of the middle frame 2. Then, the cleaning fluid supply device connected to the liquid supply pipe 14 is activated. The cleaning fluid is sprayed at high speed by the high-pressure nozzle 15 onto the surface of the screen plate fixed inside the middle frame 2, washing away the residual ink, photosensitive adhesive and other contaminants on the screen plate. Then, the servo motors 11 symmetrically installed on the side frames 10 on both sides are controlled to drive the connected side threaded rods 12 to rotate synchronously. The side threaded rods 12 drive the movable plate 13 to move vertically with the liquid supply pipe 14 and the high-pressure nozzle 15 through the threaded connection. The high-speed cleaning fluid sprayed by the high-pressure nozzle 15 thoroughly cleans the screen plate.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A screen cleaning device for a printing press, characterized in that, Including: A cleaning pool (1), a middle frame (2) is fixedly installed in the middle of the inner side of the cleaning pool (1), a positioning groove (3) is opened at the bottom of the inner side of the middle frame (2), the bottom end of the positioning groove (3) is communicated with the middle part of the liquid discharge hole (4), the liquid discharge hole (4) is opened at the bottom of the middle frame (2), and a stable hole (5) is opened at the top end of the middle frame (2); A middle threaded rod (6) is installed through the stable hole (5), a locking nut (7) is installed on the middle threaded rod (6), the bottom end of the middle threaded rod (6) is fixedly connected to the top surface of the extrusion plate (8), and an anti-slip pad (9) is installed on the bottom surface of the extrusion plate (8); A side frame (10) is fixedly installed at the end of the cleaning pool (1), a servo motor (11) is fixedly installed at the top end of the side frame (10), a side threaded rod (12) is installed at the output end of the bottom of the servo motor (11), the bottom end of the side threaded rod (12) is rotatably connected to the inner bottom surface of the cleaning pool (1), a movable plate (13) is installed at the top of the side threaded rod (12), a liquid supply pipe (14) is fixedly installed at the end of the movable plate (13) close to the middle frame (2), and a high-pressure spray head (15) is installed obliquely on the liquid supply pipe (14).

2. The screen cleaning device for a printing press according to claim 1, characterized in that: The front view cross-section shape of the positioning groove (3) is an isosceles trapezoid, and the side inclined surface of the positioning groove (3) is set as a matte surface.

3. The screen cleaning device for a printing press according to claim 1, characterized in that: The liquid discharge holes (4) are distributed at equal intervals, and the liquid discharge holes (4) are horizontally penetrated and opened at the bottom of the middle frame (2).

4. The screen cleaning device for a printing press according to claim 1, characterized in that: The middle threaded rod (6) is slidably connected to the stable hole (5), locking nuts (7) are symmetrically installed on the middle threaded rods (6) on the upper and lower sides of the stable hole (5), and the middle threaded rods (6) are symmetrically distributed about the center of the extrusion plate (8).

5. The screen cleaning device for a printing press according to claim 1, characterized in that: The side frames (10) are symmetrically distributed about the center of the middle frame (2), and the side view shape of the side frames (10) is an inverted "U" shape.

6. The screen cleaning device for a printing press according to claim 1, characterized in that: The side threaded rod (12) is threadedly connected to the movable plate (13), and the side threaded rods (12) are symmetrically distributed about the center of the movable plate (13).

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