Pneumatic cleaning device for printing roller

Abstract

The utility model provides a pneumatic cleaning device for a printing roller, which belongs to the technical field of printing equipment, and aims to solve the problems that a brush is easy to age, needs to be replaced regularly and is inconvenient to maintain when the brush is used for cleaning the printing roller in the prior art, the pneumatic cleaning device comprises a housing, the lower part of the housing is open, an air inlet is formed in one side of the housing, and an air outlet is formed in the other side of the housing. An ink inlet is formed in one side of the housing, an ink outlet is formed in the other side of the housing, an attaching rubber ring is arranged on the edge of an opening of the housing, the bottom of the attaching rubber ring is attached to the printing roller, and the front side of the attaching rubber ring is in clearance fit with the printing roller; the air injection mechanism injects air into the housing, and air flow is blown from one side of the air inlet to one side of the ink outlet; and the collecting box is communicated with the ink outlet through an ink outlet pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing equipment, and more specifically, particularly relates to a pneumatic cleaning device for a printing roller. Background Art

[0002] Printing rollers play a vital role in printing technology. They are mainly used to transfer ink or other printing media to substrates, such as paper, plastic film, metal foil, etc., to achieve the reproduction of text, patterns or images. Since the ink needs to be printed on the substrate, in order to ensure the long-term high-efficiency printing of high-quality products by the printing roller, the ink on it needs to be cleaned regularly. The cleaning method in the existing technology is mostly a mechanical brushing method, which cleans the surface of the printing roller by brushing bristles.

[0003] For example, a printing device with an automatic cleaning device, which is disclosed as CN219883526U, belongs to the technical field of printing devices, and includes a machine body and a printing roller rotatably connected to the machine body. A cleaning mechanism for cleaning the printing roller is provided on the machine body, and the cleaning mechanism includes a liquid storage tank, a liquid spray box, and a brush plate. The liquid storage tank is fixed to one side of the machine body, and a liquid guide tube connected to the liquid storage tank is provided on the liquid spray box. The brush plate is provided at the bottom of the liquid spray box. A switching mechanism for switching the liquid spray box to spray liquid is provided between the liquid spray box and the machine body. The liquid storage tank and the liquid spray box can be used to spray the printing roller with cleaning liquid or water for removing ink when the printing roller rotates, and then the printing roller is brushed with the brush plate, thereby achieving the effect of automatic cleaning. Such a structure involves the aging problem of the brush, so the brush needs to be replaced regularly, which is inconvenient for maintenance.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a pneumatic cleaning device for a printing roller is provided, in order to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a pneumatic cleaning device for a printing roller, so as to solve the problem that the prior art uses a brush to clean the printing roller, but the brush is easy to age, needs to be replaced regularly, and is inconvenient to repair and maintain.

[0006] The purpose and effect of the pneumatic cleaning device for printing rollers of the utility model are achieved by the following specific technical means:

[0007] A printing roller pneumatic cleaning device, comprising:

[0008] A cover shell, wherein the lower part of the cover shell is open, an air inlet is arranged on one side of the cover shell, an ink outlet is arranged on the other side of the cover shell, an attached rubber ring is arranged on the open edge of the cover shell, the bottom of the attached rubber ring is attached to the printing roller, and the front side of the attached rubber ring is in gap fit with the printing roller;

[0009] An air jet mechanism, wherein the air jet mechanism jets air into the housing, and the air flow blows from one side of the air inlet to one side of the ink outlet;

[0010] The collecting box is connected with the ink outlet through the ink outlet tube.

[0011] Furthermore, the jet mechanism comprises a nozzle fixedly connected to the air inlet and an air pump connected to the nozzle, and the angle between the axis of the nozzle and the rotation direction of the outer peripheral surface of the printing roller is an obtuse angle.

[0012] Furthermore, the collecting box is provided with an exhaust port, and a partition is provided inside the collecting box, a gap is formed between the partition and the collecting box, the position of the gap is far away from the exhaust port, and the lower end of the ink outlet tube extends to a position at the bottom of the collecting box far away from the gap.

[0013] Furthermore, bristles are fixedly connected inside the cover shell, and the bristles are in contact with the outer wall of the printing roller.

[0014] Furthermore, the gap distance between the front side of the attached rubber ring and the printing roller is D, 0<Dmin≤2mm.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model covers the outer wall area of ​​the printing roller that needs to be flushed with ink by arranging a cover shell, and then jets the outer wall of the printing roller through an air jet mechanism, and the air flow is tilted and sprayed westward toward the surface of the printing roller and flows to the ink outlet. The ink flushed down by the air flow flows from the ink outlet to the collection box, thereby realizing pneumatic flushing of the surface of the printing roller. Since the complex mechanical brushing structure is removed, the failure rate is low, the service life is longer, and the replacement frequency is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a cross-sectional structural schematic diagram of a printing roller pneumatic cleaning device.

[0018] Figure 2 The utility model is a partial cross-sectional structural schematic diagram of a printing roller pneumatic cleaning device installed on a printing roller.

[0019] Figure 3 The utility model is a cross-sectional structural schematic diagram of a cover shell, an attached rubber ring and a brush assembly of a printing roller pneumatic cleaning device.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] The cover 11 , the air inlet 111 , the ink outlet 112 , the attached rubber ring 12 , the nozzle 13 , the air pump 14 , the ink outlet tube 15 , the printing roller 16 , the collecting box 17 , the exhaust port 171 , the partition 172 , the notch 173 , and the bristles 18 . DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To Attachment Figure 3 As shown:

[0027] The utility model provides a printing roller pneumatic cleaning device, comprising:

[0028] A cover shell 11, wherein the lower part of the cover shell 11 is open, an air inlet 111 is provided on one side of the cover shell 11, an ink outlet 112 is provided on the other side of the cover shell 11, an attached rubber ring 12 is provided on the open edge of the cover shell 11, the bottom of the attached rubber ring 12 is attached to the printing roller 16, and the front side of the attached rubber ring 12 is gap-matched with the printing roller 16;

[0029] An air jet mechanism, wherein the air jet mechanism jets air into the housing 11, and the air flow blows from the air inlet 111 to the ink outlet 112;

[0030] The collecting box 17 is connected to the ink outlet 112 through the ink outlet tube 15 .

[0031] In this embodiment, a cover shell 11 is provided to cover the outer wall area of ​​the printing roller 16 that needs to be flushed with ink, and then the outer wall of the printing roller 16 is jetted through a jet mechanism. The airflow is tilted and sprayed westward toward the surface of the printing roller 16 and flows to the ink outlet 112. The ink flushed down by the airflow flows from the ink outlet 112 to the collection box 17, thereby realizing pneumatic flushing of the surface of the printing roller 16. Since the complex mechanical brushing structure is removed, the failure rate is low, the service life is longer, and the replacement frequency is reduced.

[0032] The jet mechanism comprises a nozzle 13 fixedly connected to the air inlet 111 and an air pump 14 connected to the nozzle 13 . The included angle between the axis of the nozzle 13 and the rotation direction of the outer peripheral surface of the printing roller 16 is an obtuse angle.

[0033] The nozzle 13 of the jet mechanism is inclined to jet toward the outer peripheral surface of the printing roller 16, and the ink on the outer peripheral surface of the printing roller 16 is flushed by the high-pressure airflow. In specific implementation, a plurality of nozzles 13 are arranged along the axial direction of the printing roller 16.

[0034] The collecting box 17 is provided with an exhaust port 171, and a partition 172 is provided inside the collecting box 17, a notch 173 is formed between the partition and the collecting box 17, the notch 173 is located away from the exhaust port 171, and the lower end of the ink outlet tube 15 extends to a position at the bottom of the collecting box 17 away from the notch 173. In specific implementation, the inner diameter cross-sectional area of ​​the ink outlet tube 15 should be more than 3 times the sum of the cross-sectional areas of the air outlets of the plurality of nozzles 13, so as to ensure smooth flow from the ink outlet tube 15.

[0035] The setting of the exhaust port 171 can ensure that the airflow can be ejected smoothly, and the setting of the partition 172 can reduce the airflow velocity, and the ink settles at the bottom of the collection box 17, while the excess gas flows out from the gap 173.

[0036] Brush bristles 18 are fixedly connected inside the cover shell 11 , and the brush bristles 18 are in contact with the outer wall of the printing roller 16 .

[0037] The bristles 18 are mainly provided to buffer the airflow, so that the air flows to the bristles 18 and slows down, thereby facilitating the collection of ink.

[0038] The gap distance between the front side of the attached rubber ring 12 and the printing roller 16 is D, 0<D≤2mm. The set gap can ensure that the printing roller 16 does not contact the side of the attached rubber ring 12 at the bottom of the cover 11, avoiding the ink being scraped off through the side of the attached rubber ring 12 and making it inconvenient to collect the ink.

[0039] The specific usage and function of this embodiment are as follows:

[0040] When the utility model is used, Figure 2 As shown, the printing roller 16 rotates counterclockwise, and the ink on the printing roller 16 passes through the front side and the rear side of the attached rubber ring 12 in sequence. During this process, the air pump 14 is started, and the nozzle 13 sprays air to the periphery of the printing roller 16 to wash away the ink. The air flow passes through the bristles 18 for buffering, and then the air flow carries the ink from the ink outlet tube 15 into the collection box 17. The ink is retained in the collection box 17, and the gas flows through the notch 173 and the exhaust port 171 in sequence. The pneumatic flushing process of the ink is completed.

[0041] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A pneumatic cleaning device for a printing roller, characterized in that: include: A cover shell (11), wherein the lower part of the cover shell (11) is open, an air inlet (111) is arranged on one side of the cover shell (11), an ink outlet (112) is arranged on the other side of the cover shell (11), an attached rubber ring (12) is arranged on the open edge of the cover shell (11), the bottom of the attached rubber ring (12) is attached to the printing roller (16), and the front side of the attached rubber ring (12) is gap-matched with the printing roller (16); An air jet mechanism, wherein the air jet mechanism jets air into the housing (11), and the air flow blows from one side of the air inlet (111) to one side of the ink outlet (112); A collecting box (17), wherein the collecting box (17) is connected to the ink outlet (112) through the ink outlet tube (15).

2. A printing roller pneumatic cleaning device as claimed in claim 1, characterized in that: The jet mechanism comprises a nozzle (13) fixedly connected to an air inlet (111) and an air pump (14) connected to the nozzle (13); the included angle between the axis of the nozzle (13) and the rotation direction of the outer peripheral surface of the printing roller (16) is an obtuse angle.

3. A printing roller pneumatic cleaning device as claimed in claim 1, characterized in that: The collecting box (17) is provided with an exhaust port (171), and a partition (172) is provided inside the collecting box (17), a notch (173) is formed between the partition and the collecting box (17), the notch (173) is located away from the exhaust port (171), and the lower end of the ink outlet tube (15) extends to a position at the bottom of the collecting box (17) away from the notch (173).

4. A printing roller pneumatic cleaning device as claimed in any one of claims 1 to 3, characterized in that: Brush bristles (18) are fixedly connected inside the cover shell (11), and the brush bristles (18) are in contact with the outer wall of the printing roller (16).

5. A printing roller pneumatic cleaning device as claimed in claim 1, characterized in that: The gap distance between the front side of the attached rubber ring (12) and the printing roller (16) is D, 0<Dmin≤2mm.

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