Printing roller and printing equipment

Abstract

The embodiments of the present application relate to the technical field of printing equipment, and in particular to a printing roller, which can be rotatably arranged on a first fixing member and a second fixing member along its circumferential direction, and has a first chamber and a second chamber that are independent of each other inside the roller; a first gas outlet mechanism has a first outer shell, a first partition and a second partition, the first outer shell is arranged on the first fixing member and is provided with a first opening connected to the interior thereof, the first partition is arranged on the hole wall of the first opening, the second partition is located inside the first outer shell, and divides the interior of the first outer shell into a first space and a second space; one end of the first pipe is connected to the first chamber, and the other end is connected to the first space; one end of the second pipe is connected to the first chamber, and the other end is connected to the second space. The embodiments of the present application also provide a printing device, including the above-mentioned printing roller. The printing roller and printing device provided in the embodiments of the present application can make the printing roller applicable to more scenarios.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of printing equipment, in particular to paper feeding technology in printing equipment, and more particularly to a printing roller and printing equipment. Background Art

[0002] Currently, most printing rollers are suction rollers such as the one described in Chinese patent application number “201420010763.X” or suction rollers such as the one described in Chinese patent application number “201420010764.4”.

[0003] In this printing cylinder, two chambers (i.e., the air suction chambers described in the above-mentioned Chinese patent application) are provided inside the cylinder, and the two chambers are independent of each other and are both connected to the outside of the cylinder through openings provided on the surface of the cylinder. However, since this printing cylinder has only one air outlet, the two chambers can only use this air outlet alternately when the cylinder rotates, resulting in the inability of the two chambers to absorb paper at the same time, and it is impossible to use only one of the two chambers, resulting in fewer applicable scenarios for this printing cylinder. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a printing roller and a printing device. When the roller in the printing roller has two chambers, the two chambers can be used at the same time, or only one of the two chambers can be used, so that the printing roller can be used in more scenarios.

[0005] In order to solve the above problems, the embodiment of the present application provides a printing roller, comprising: a first fixing member, a second fixing member, a roller, a first gas outlet mechanism, a first pipeline and a second pipeline; the first fixing member and the second fixing member are arranged on both sides of the roller relative to each other along the roller axis; the roller can be rotatably arranged on the first fixing member and the second fixing member along its circumferential direction, and the interior of the roller has a first chamber and a second chamber that are independent of each other, and the first chamber and the second chamber are both connected to the outside of the roller through an opening arranged on the surface of the roller; the first gas outlet mechanism has a first outer shell, a first partition and a second partition, the first outer shell is arranged on the first fixing member and has a The first opening is connected to the interior thereof, and the first partition can be rotatably arranged on the hole wall of the first opening along the circumferential direction of the drum. The second partition is located in the first outer shell and divides the interior of the first outer shell into a first space located between the first partition and the second partition and a second space located on the side of the second partition away from the first partition. The first outer shell is also provided with a first air intake port connected to the first space and a second air intake port connected to the second space; one end of the first pipe is connected to the first chamber, and the other end passes through the first partition and is connected to the first space; one end of the second pipe is connected to the second chamber, and the other end passes through the first partition and then passes through the second partition to be connected to the second space.

[0006] In addition, an embodiment of the present application also provides a printing device, including the above-mentioned printing roller.

[0007] A printing roller and a printing device provided in an embodiment of the present application, in which a first chamber is connected to a first space via a first pipe, so that a suction device can be connected to the first air inlet to extract the gas in the first space, the first pipe and the first chamber via the first air inlet connected to the first space. At this time, when there is paper on the outer surface of the roller at the opening connected to the first chamber, the paper covers the opening on the outer surface of the roller and connected to the first chamber, so that the first chamber forms a negative pressure under the action of the suction device, so that the paper is adsorbed on the outer surface of the roller at the opening connected to the first chamber; the second chamber is connected to the second space via a second pipe, so that the suction device can be connected to the second air inlet to extract the gas in the second space, the second pipe and the second chamber via the second air inlet connected to the second space. At this time, when there is paper on the outer surface of the roller at the opening connected to the second chamber, the paper covers the opening on the outer surface of the roller and connected to the second chamber, so that the second chamber forms a negative pressure under the action of the suction device, so that the paper is adsorbed on the outer surface of the roller at the opening connected to the second chamber.

[0008] In this way, when the first chamber and the second chamber need to be used at the same time, the exhaust device can be connected to both the first air inlet and the second air inlet, so that the gas in the first space, the first pipeline and the first chamber can be extracted through the first air inlet connected to the first space, and the gas in the second space, the second pipeline and the second chamber can be extracted through the second air inlet connected to the second space; and when only the first chamber needs to be used, the gas in the first space, the first pipeline and the first chamber can be extracted through the exhaust device only through the first air inlet connected to the first space. At this time, the exhaust device can be connected only to the first air inlet. Of course, the exhaust device The device can also be connected to both the first air inlet and the second air inlet, but the exhaust device does not extract the gas in the second space, the second pipe and the second chamber through the second air inlet connected to the second space; and when only the second chamber needs to be used, the exhaust device can only extract the gas in the second space, the second pipe and the second chamber through the second air inlet connected to the second space. At this time, the exhaust device can be connected only to the second air inlet. Of course, the exhaust device can also be connected to both the first air inlet and the second air inlet, but the exhaust device does not extract the gas in the first space, the first pipe and the first chamber through the first air inlet connected to the first space. Thus, the two chambers (i.e., the first chamber and the second chamber) can be used at the same time, and only one of the two chambers (i.e., the first chamber or the second chamber) can be used, so that this type of printing roller is applicable to more scenarios.

[0009] In addition, the first partition can be rotatably arranged on the hole wall of the first opening along the circumference of the drum, so that when the drum rotates, the first pipe and even the first partition can be driven to rotate along the circumference of the drum, thereby avoiding interference between the first pipe and other components when the drum rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A cross-sectional view of a printing cylinder provided in some embodiments of the present application cut along its axial direction;

[0011] Figure 2 For along Figure 1 Sectional view taken along the E-E direction.

[0012] In the accompanying drawings, the reference numerals are as follows:

[0013] A first fixing member 110;

[0014] A second fixing member 120;

[0015] Drum 130, first chamber 131, second chamber 132, opening 133;

[0016] A first gas outlet mechanism 140, a first outer shell 141, a first partition 142, a second partition 143, a first opening 144, a first space 145, a second space 146, a first air intake port 147, and a second air intake port 148;

[0017] A first pipeline 150;

[0018] The second pipe 160 . DETAILED DESCRIPTION

[0019] As can be seen from the background technology, in the printing roller of the related art, two chambers are provided inside the roller (i.e., the air suction cavity described in the above-mentioned Chinese patent application), and the two chambers are independent of each other and are both connected to the outside of the roller through an opening provided on the surface of the roller. However, since this printing roller has only one air outlet, the two chambers can only use this air outlet alternately when the roller rotates, resulting in the two chambers being unable to absorb paper at the same time, and it is impossible to use only one of the two chambers, resulting in fewer applicable scenarios for this printing roller.

[0020] In this regard, the inventor of the present application has designed a printing roller, comprising: a first fixing member, a second fixing member, a roller, a first gas outlet mechanism, a first pipe and a second pipe; the first fixing member and the second fixing member are arranged on both sides of the roller relative to each other along the roller axis; the roller can be rotatably arranged on the first fixing member and the second fixing member along its circumferential direction, and the interior of the roller has a first chamber and a second chamber that are independent of each other, and the first chamber and the second chamber are both connected to the outside of the roller through an opening arranged on the surface of the roller; the first gas outlet mechanism has a first outer shell, a first partition and a second partition, and the first outer shell is arranged on the first fixing member and is provided with ... The first opening is internally connected, and the first partition can be rotatably arranged on the hole wall of the first opening along the circumference of the drum. The second partition is located in the first outer shell and divides the interior of the first outer shell into a first space located between the first partition and the second partition and a second space located on the side of the second partition away from the first partition. The first outer shell is also provided with a first air intake port connected to the first space and a second air intake port connected to the second space; one end of the first pipe is connected to the first chamber, and the other end passes through the first partition and is connected to the first space; one end of the second pipe is connected to the second chamber, and the other end passes through the first partition and then passes through the second partition to be connected to the second space.

[0021] In the printing roller designed by the inventor of the present application, the first chamber is connected to the first space via the first pipe, so that the first suction port can be connected to the first space through the exhaust device, so as to extract the gas in the first space, the first pipe and the first chamber through the first suction port connected to the first space. At this time, when there is paper on the outer surface of the roller at the opening connected to the first chamber, the paper covers the opening on the outer surface of the roller and connected to the first chamber, so that the first chamber forms a negative pressure under the action of the exhaust device, so that the paper is adsorbed on the outer surface of the roller at the opening connected to the first chamber; the second chamber is connected to the second space via the second pipe, so that the second chamber can be connected to the second suction port through the exhaust device, so as to extract the gas in the second space, the second pipe and the second chamber through the second suction port connected to the second space. At this time, when there is paper on the outer surface of the roller at the opening connected to the second chamber, the paper covers the opening on the outer surface of the roller and connected to the second chamber, so that the second chamber forms a negative pressure under the action of the exhaust device, so that the paper is adsorbed on the outer surface of the roller at the opening connected to the second chamber.

[0022] In this way, when the first chamber and the second chamber need to be used at the same time, the exhaust device can be connected to both the first air inlet and the second air inlet, so that the gas in the first space, the first pipeline and the first chamber can be extracted through the first air inlet connected to the first space, and the gas in the second space, the second pipeline and the second chamber can be extracted through the second air inlet connected to the second space; and when only the first chamber needs to be used, the gas in the first space, the first pipeline and the first chamber can be extracted through the exhaust device only through the first air inlet connected to the first space. At this time, the exhaust device can be connected only to the first air inlet. Of course, the exhaust device The device can also be connected to both the first air inlet and the second air inlet, but the exhaust device does not extract the gas in the second space, the second pipe and the second chamber through the second air inlet connected to the second space; and when only the second chamber needs to be used, the exhaust device can only extract the gas in the second space, the second pipe and the second chamber through the second air inlet connected to the second space. At this time, the exhaust device can be connected only to the second air inlet. Of course, the exhaust device can also be connected to both the first air inlet and the second air inlet, but the exhaust device does not extract the gas in the first space, the first pipe and the first chamber through the first air inlet connected to the first space. Thus, the two chambers (i.e., the first chamber and the second chamber) can be used at the same time, and only one of the two chambers (i.e., the first chamber or the second chamber) can be used, so that this type of printing roller is applicable to more scenarios.

[0023] In addition, the first partition can be rotatably arranged on the hole wall of the first opening along the circumference of the drum, so that when the drum rotates, the first pipe and even the first partition can be driven to rotate along the circumference of the drum, thereby avoiding interference between the first pipe and other components when the drum rotates.

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, the technical scheme claimed in the present application can also be realized by various changes and modifications based on the following embodiments.

[0025] See also Figure 1 and Figure 2The printing roller provided in some embodiments of the present application includes: a first fixing member 110, a second fixing member 120, a roller 130, a first gas outlet mechanism 140, a first pipe 150 and a second pipe 160; the first fixing member 110 and the second fixing member 120 are arranged on both sides of the roller 130 along the axis of the roller 130; the roller 130 can be rotatably arranged on the first fixing member 110 and the second fixing member 120 along its circumferential direction, and the roller 130 has a first chamber 131 and a second chamber 132 that are independent of each other, and the first chamber 131 and the second chamber 132 are both connected to the outside of the roller 130 through an opening 133 arranged on the surface of the roller 130; the first gas outlet mechanism 140 has a first outer shell 141, a first partition 142 and a second partition 143, and the first outer shell 141 is arranged on the first fixing member 110 and is provided with a gas outlet 143 and a gas outlet 143; ... The first opening 144 is connected internally, and the first partition 142 can be arranged on the hole wall of the first opening 144 rotatably along the circumference of the drum 130. The second partition 143 is located in the first outer shell 141, and divides the interior of the first outer shell 141 into a first space 145 located between the first partition 142 and the second partition 143 and a second space 146 located on the side of the second partition 143 away from the first partition 142. The first outer shell 141 is also provided with a first air intake port 147 connected to the first space 145, and a second air intake port 148 connected to the second space 146; one end of the first pipe 150 is connected to the first chamber 131, and the other end passes through the first partition 142 and is connected to the first space 145; one end of the second pipe 160 is connected to the second chamber 132, and the other end passes through the first partition 142 and then passes through the second partition 143 to be connected to the second space 146.

[0026] Specifically, the present application does not limit the shapes of the first fixing member 110 and the second fixing member 120. The first fixing member 110 and the second fixing member 120 may be plate-shaped objects, plate-like objects, block-shaped objects, etc. In one example, the first fixing member 110 and the second fixing member 120 are both plate-shaped objects or plate-like objects. In this case, the plate surface of the first fixing member 110 may be parallel to the plate surface of the second fixing member 120. In addition, the plate surface of the first fixing member 110 and the plate surface of the second fixing member 120 may also be perpendicular to the axis of the drum 130. When the first fixing member 110 and the second fixing member 120 are both plate-shaped objects, the first fixing member 110 and the second fixing member 120 may be metal plates made of metal with high hardness, such as iron plates. When the first fixing member 110 and the second fixing member 120 are plate-like objects, the first fixing member 110 and the second fixing member 120 may be walls. Furthermore, the positions of the first fixing member 110 and the second fixing member 120 are fixed, so that the stability of the printing roller during operation can be improved.

[0027] The present application does not limit the specific implementation of the roller 130 being rotatably arranged on the first fixing member 110 and the second fixing member 120 along the circumferential direction thereof. In one example, one end of the roller 130 is rotatably arranged on the first fixing member 110 via a bearing, and the other end of the roller 130 is rotatably arranged on the second fixing member 120 via a bearing. It should be noted that the present application does not limit the specific implementation of the "rotation" involved below, and the desired rotation effect can also be achieved through a bearing.

[0028] The first chamber 131 and the second chamber 132 are independent of each other, which means that there is no communication relationship between the first chamber 131 and the second chamber 132. The first chamber 131 and the second chamber 132 are both connected to the outside of the drum 130 through the opening 133 provided on the surface of the drum 130, which means that the first chamber 131 is connected to the outside of the drum 130 through a part of the openings 133 provided on the surface of the drum 130, and the second chamber 132 is connected to the outside of the drum 130 through another part of the openings 133 provided on the surface of the drum 130; specifically, there are multiple openings 133, and the multiple openings 133 include first-type openings and second-type openings. The first chamber 131 is connected to the outside of the drum 130 through the first-type openings provided on the surface of the drum 130, and the second chamber 132 is connected to the outside of the drum 130 through the second-type openings provided on the surface of the drum 130. At this time, the paper is adsorbed on the outer surface of the drum 130 at the opening 133 connected to the first chamber 131, that is, the paper is adsorbed on the outer surface of the drum 130 at the first type of opening; the paper is adsorbed on the outer surface of the drum 130 at the opening 133 connected to the second chamber 132, that is, the paper is adsorbed on the outer surface of the drum 130 at the second type of opening.

[0029] In some embodiments, the first chamber 131 and the second chamber 132 are sequentially arranged along the axis of the drum 130. At this time, the "opening 133 connected to the first chamber 131" and the "opening 133 connected to the second chamber 132" are also sequentially arranged along the axis of the drum 130. Further, in combination with the content of the aforementioned embodiment, the first type of opening and the second type of opening are sequentially arranged along the axis of the drum 130. In this way, when the first chamber 131 and the second chamber 132 are used to absorb two different papers at the same time, the two different papers are arranged on the surface of the drum 130 in a sequential manner along the axis of the drum 130.

[0030] Alternative, such as Figure 1 and Figure 2As shown, the first chamber 131 and the second chamber 132 are sequentially arranged along the circumference of the drum 130. At this time, the "opening 133 communicating with the first chamber 131" and the "opening 133 communicating with the second chamber 132" are also sequentially arranged along the circumference of the drum 130. Further, combined with the content of the above-mentioned embodiment, the first type of opening and the second type of opening are sequentially arranged along the circumference of the drum 130. In this way, when the first chamber 131 and the second chamber 132 are used to absorb two different sheets of paper at the same time, the two different sheets of paper are arranged on the surface of the drum 130 in a sequential manner along the circumference of the drum 130.

[0031] The present application does not limit the specific position of the first gas outlet mechanism 140 on the first fixing member 110. In some embodiments, such as Figure 1 The first gas outlet mechanism 140 and the roller 130 are arranged on opposite sides of the first fixing member 110, so that the air extraction device is conveniently connected to the first air inlet 147 and the second air inlet 148. Alternatively, the first gas outlet mechanism 140 and the roller 130 can also be arranged on the same side of the first fixing member 110. In this case, part of the first gas outlet mechanism 140 can be placed inside the roller 130 to reduce the space required for the printing roller.

[0032] In some embodiments, when the first partition 142 is rotatably disposed on the hole wall of the first opening 144 along the circumferential direction of the drum 130, the edge of the first partition 142 is sealed and connected to the hole wall of the first opening 144, so that gas leakage between the edge of the first partition 142 and the hole wall of the first opening 144 can be avoided. Preferably, the first partition 142 is a circular partition, the first opening 144 is a circular hole that matches the size of the first partition 142, and the first partition 142 is coaxially disposed with the drum 130, so that the drum 130 can drive the first pipe 150 and the first partition 142 to rotate along the circumferential direction of the drum 130 when rotating, so as to avoid interference between the first pipe 150 and other components when the drum 130 rotates.

[0033] Preferably, the first baffle 142 and the second baffle 143 are sequentially arranged along the axis of the drum 130, and the axis of the portion of the first pipe 150 located at the first baffle 142 is parallel to the axis of the drum 130. In this way, it is further convenient to drive the first pipe 150 and the first baffle 142 to rotate along the circumferential direction of the drum 130 when the drum 130 rotates.

[0034] When the second partition plate 143 divides the interior of the first outer shell 141 into a first space 145 and a second space 146 , the first space 145 and the second space 146 are independent of each other and are not connected.

[0035] In one example, when the air extraction device is connected to both the first air inlet 147 and the second air inlet 148, the number of the air extraction devices may be two, and the two air extraction devices are respectively connected to the first air inlet 147 and the second air inlet 148. In another example, when the air extraction device is connected to both the first air inlet 147 and the second air inlet 148, the number of the air extraction device may also be one, and one air extraction device is simultaneously connected to the first air inlet 147 and the second air inlet 148. In this case, a valve disposed at the first air inlet 147 and a valve disposed at the second air inlet 148 may also be included. In this case, when the first air inlet 147 is not needed, it can be achieved by closing the valve at the first air inlet 147; and when the second air inlet 148 is not needed, it can be achieved by closing the valve at the second air inlet 148.

[0036] In some embodiments, the portion of the second pipe 160 located at the first partition 142 and the second partition 143 is coaxially arranged with the drum 130, and the portion of the second pipe 160 located at the second partition 143 can be rotatably arranged on the second partition 143 along the circumferential direction of the drum 130. In this way, when the drum 130 rotates, the second pipe 160 can rotate together with the drum 130, so that the portion of the second pipe 160 located at the second partition 143 and the second partition 143 rotate relative to each other, so as to avoid interference between the second pipe 160 and the second partition 143.

[0037] Alternatively, the second baffle 143 may be disposed in the first outer shell 141 so as to rotate along the circumference of the drum 130. In this way, when the drum 130 rotates, the drum 130 may drive the second pipe 160 and the second baffle 143 to rotate along the circumference of the drum 130. Preferably, the second baffle 143 is a circular baffle, and the second baffle 143 is coaxially disposed with the drum 130, so that the drum 130 may drive the second pipe 160 and the second baffle 143 to rotate along the circumference of the drum 130 when rotating, so as to avoid interference between the second pipe 160 and other components when the drum 130 rotates.

[0038] It should be noted that, in some embodiments, in order to improve the connectivity between the first pipe 150 and the first chamber 131, the first chamber 131 may also be connected to the portion between the two ends of the first pipe 150. Similarly, in order to improve the connectivity between the second pipe 160 and the second chamber 132, the second chamber 132 may also be connected to the portion between the two ends of the second pipe 160.

[0039] In some embodiments, the first pipe 150 is a linear pipe. In this case, the axis of any part of the first pipe 150 can be parallel to the drum 130.

[0040] The second pipeline 160 can also be a linear pipeline. At this time, the axis of any part of the second pipeline 160 can be parallel to or overlap with the roller 130 as required.

[0041] In some embodiments, the printing roller further includes: a third pipe (not shown in the figure); the roller 130 also has a third chamber (not shown in the figure) that is independent of the first chamber 131 and the second chamber 132, and the third chamber is connected to the outside of the roller 130 through an opening 133 arranged on the surface of the roller 130; the first gas outlet mechanism 140 also has a third partition (not shown in the figure), the first partition 142, the third partition and the second partition 143 are arranged in sequence along the axis of the roller 130, the third partition is located in the first outer shell 141, and the first space 145 is divided into a space between the third partition and the first partition 142. The third space and the fourth space located between the third partition plate and the second partition plate 143, the first outer shell 141 is also provided with a third air intake port (not shown in the figure) connected to the fourth space, and the second air intake port 148 is connected to the third space; the other end of the first pipe 150 is connected to the third space; the other end of the second pipe 160 passes through the first partition plate 142 and the third partition plate and then passes through the second partition plate 143 to be connected to the second space; one end of the third pipe is connected to the third chamber, and the other end passes through the first partition plate 142 and the third partition plate to be connected to the fourth space, and the third partition can be rotatably arranged in the first outer shell 141 along the circumference of the drum 130.

[0042] In this way, when the roller 130 in the printing roller has three chambers (i.e., the first chamber 131, the second chamber 132, and the third chamber), the three chambers can be used simultaneously, or only two or even any one of the three chambers can be used, so that the printing roller can be applied to more scenarios. At the same time, since the third partition can be rotatably arranged in the first outer shell 141 along the circumference of the roller 130, when the roller 130 rotates, the third pipe and the third partition can be driven to rotate along the circumference of the roller 130 to avoid interference between the third pipe and other components.

[0043] It should be noted that, at this time, other pipes, chambers corresponding to the pipes, and partitions arranged in the first outer shell 141 for separating spaces may also be provided, which will not be described in detail here.

[0044] In some embodiments, the printing roller also includes: a fourth pipe (not shown in the figure), and a second gas outlet mechanism (not shown in the figure); the interior of the roller 130 also has a fourth chamber (not shown in the figure) independent of the first chamber 131 and the second chamber 132, and the fourth chamber is connected to the outside of the roller 130 through an opening 133 arranged on the surface of the roller 130; the second gas outlet mechanism has a second outer shell (not shown in the figure), the second outer shell is arranged on the second fixing member 120 and is provided with a second opening (not shown in the figure) connected to the interior thereof and a fourth air intake port (not shown in the figure); one end of the fourth pipe is connected to the fourth chamber, and the other end is connected to the interior of the second outer shell via the second opening.

[0045] In this way, when the roller 130 in the printing roller has three chambers (i.e., the first chamber 131, the second chamber 132 and the fourth chamber), the three chambers can be used at the same time, or only any two or even any one of the three chambers can be used, thereby making this type of printing roller applicable to more scenarios.

[0046] It should be noted that this embodiment can also be combined with the third chamber and other structures involved in the above embodiment, so that the roller 130 in the printing roller has more chambers, further making this type of printing roller applicable to more scenarios.

[0047] In some embodiments, the second gas outlet mechanism further comprises a fourth baffle (not shown in the figure), which is a circular baffle and is coaxially arranged with the roller 130. The fourth baffle can be rotatably arranged on the hole wall of the second opening along its circumferential direction; the other end of the fourth pipe passes through the fourth baffle and is connected to the interior of the second outer shell. In this way, when the roller 130 rotates, the fourth pipe and the fourth baffle can also be driven to rotate together to avoid interference between the fourth pipe and other components.

[0048] Alternatively, the portion of the fourth pipe located at the second opening is coaxially arranged with the roller 130, and the portion of the fourth pipe located at the second opening can be rotatably arranged on the hole wall of the second opening along the circumferential direction of the roller 130. In this way, when the roller 130 rotates, the fourth pipe can also be driven to rotate at the second opening to avoid interference between the fourth pipe and other components.

[0049] It should be noted that, in this embodiment, a fifth pipe may also be provided. In this case, “the specific cooperation mode between the fourth pipe and the fifth pipe and the drum 130 and the second fixing member 120” may refer to the “specific cooperation mode between the first pipe 150 and the second pipe 160 and the drum 130 and the first fixing member 110”, which will not be repeated here.

[0050] In some embodiments, the present application further provides a printing device, including the printing roller in the above embodiment. Since the printing device provided by the present application includes the printing roller in the above embodiment, the printing device provided by the present application also has the same beneficial effects as the printing roller in the above embodiment, which will not be described in detail here.

[0051] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present application. Any person skilled in the art can make their own changes and modifications without departing from the spirit and scope of the present application, so the scope of protection of the present application shall be based on the scope defined in the claims.

Claims

1. A printing cylinder, characterized in that: include: A first fixing member, a second fixing member, a roller, a first gas outlet mechanism, a first pipeline and a second pipeline; The first fixing member and the second fixing member are arranged opposite to each other on two sides of the drum along the axis of the drum; The drum is rotatably arranged on the first fixing member and the second fixing member along its circumferential direction, and the drum has a first chamber and a second chamber which are independent of each other, and the first chamber and the second chamber are both connected to the outside of the drum through an opening arranged on the surface of the drum; The first gas outlet mechanism comprises a first outer shell, a first partition and a second partition, the first outer shell is arranged on the first fixing member and is provided with a first opening connected with the interior thereof, the first partition is rotatably arranged on the hole wall of the first opening along the circumferential direction of the drum, the second partition is arranged inside the first outer shell and divides the interior of the first outer shell into a first space located between the first partition and the second partition and a second space located on a side of the second partition away from the first partition, the first outer shell is further provided with a first air intake port connected with the first space, and a second air intake port connected with the second space; One end of the first pipe is connected to the first chamber, and the other end passes through the first partition plate and is connected to the first space; One end of the second pipe is connected to the second chamber, and the other end passes through the first partition plate and then through the second partition plate to communicate with the second space; The first fixing member and the second fixing member are plate-shaped objects, plate-like objects or block-shaped objects; The first gas outlet mechanism is arranged on both sides of the first fixing member opposite to the roller; The first chamber and the second chamber are arranged in sequence along the axis or circumference of the drum.

2. The printing cylinder according to claim 1, characterized in that The portion of the second pipe located at the first partition and the second partition is coaxially arranged with the drum, and the portion of the second pipe located at the second partition can be rotatably arranged on the second partition along the circumferential direction of the drum.

3. The printing cylinder according to claim 1, characterized in that The second partition plate is rotatably disposed in the first outer shell along the circumferential direction of the drum.

4. The printing cylinder according to any one of claims 1 to 3, characterized in that: Also included: a third pipeline; The drum also has a third chamber inside which is independent of the first chamber and the second chamber, and the third chamber is connected to the outside of the drum through an opening arranged on the surface of the drum; The first gas outlet mechanism further comprises a third partition plate, wherein the first partition plate, the third partition plate and the second partition plate are sequentially arranged along the axis of the drum, the third partition plate is located in the first outer shell, and divides the first space into a third space located between the third partition plate and the first partition plate and a fourth space located between the third partition plate and the second partition plate, the first outer shell further comprises a third air intake port communicating with the fourth space, and the second air intake port is communicated with the third space; The other end of the first pipe is in communication with the third space; The other end of the second pipe passes through the first partition plate and the third partition plate and then penetrates the second partition plate to communicate with the second space; One end of the third pipe is communicated with the third chamber, and the other end passes through the first partition and the third partition to communicate with the fourth space. The third partition is rotatably disposed in the first outer shell along the circumferential direction of the drum.

5. The printing cylinder according to any one of claims 1 to 3, characterized in that: Also includes: a fourth pipeline, and a second gas outlet mechanism; The drum also has a fourth chamber inside which is independent of the first chamber and the second chamber, and the fourth chamber is connected to the outside of the drum through an opening arranged on the surface of the drum; The second gas outlet mechanism comprises a second outer shell, which is arranged on the second fixing member and is provided with a second opening and a fourth air inlet communicating with the interior thereof; One end of the fourth pipe is in communication with the fourth chamber, and the other end is in communication with the interior of the second outer shell via the second opening.

6. The printing cylinder according to claim 5, characterized in that The second gas outlet mechanism further comprises a fourth baffle, which is a circular baffle and is coaxially arranged with the roller, and the fourth baffle is rotatably arranged on the hole wall of the second opening along its circumferential direction; The other end of the fourth pipe passes through the fourth partition plate and communicates with the interior of the second outer shell.

7. The printing cylinder according to claim 5, characterized in that The portion of the fourth pipeline located at the second opening is coaxially arranged with the roller, and the portion of the fourth pipeline located at the second opening can be rotatably arranged on the hole wall of the second opening along the circumference of the roller.

8. A printing device, characterized in that: Comprising a printing roller as described in any one of claims 1 to 7.

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