A printing roller

Abstract

The present invention discloses a printing roller, comprising a roller body, a printing plate capable of absorbing ink is fixedly arranged on the outer peripheral surface of the roller body, an ink storage structure is arranged on the roller body, the ink storage structure supplies ink to the printing plate through ink outlet holes arranged on the outer peripheral surface of the roller body, and the ink outlet holes are covered by the printing plate. The printing roller of the present invention has a relatively simple structure, low cost, small space occupation, can reduce the adverse effects of ink volatilization on the production environment, and is easy to maintain.

Description

Technical Field

[0001] The invention relates to the field of printing, in particular to a printing roller. Background Art

[0002] The printing mechanism of an existing printing press generally includes an ink transfer roller, a plate roller and a transfer roller. The ink transfer roller transfers the ink from the ink tank to the plate roller, and the plate roller then transfers the characters to the transfer roller, which is finally printed on the object to be printed. In the prior art, the ink tank is generally arranged separately outside. During the process of the ink transfer roller transferring the ink from the ink tank to the plate roller, part of the ink will volatilize, causing environmental pollution; furthermore, the ink transfer roller and the ink tank occupy a large space, resulting in a large size of the printing mechanism and a complex structure, which is not conducive to the maintenance and management of the equipment.

[0003] In the patent application document with application number CN201710721035.8 and titled "A Gravure Printing Machine", a printing roller with an ink storage chamber inside is disclosed. A booster device is also provided inside the printing roller. An ink supply channel is provided inside the rotating shaft of the printing roller. The ink storage chamber is connected to the printing groove and the ink supply channel respectively. An ink supply hole is provided in the printing groove, which is connected to the ink storage chamber, and a one-way valve is provided in the ink supply hole. The booster device is provided with a booster pump, which is connected to the ink supply hole through a pipeline. The ink supply hole is provided at the front end of the printing groove along the movement direction of the printing groove. The rotating shaft is provided with an ink supply hole, which is connected to the ink storage chamber and the ink supply channel, and a one-way valve is provided in the ink supply hole. In this patent application document, the ink tank is integrated in the printing roller, and the ink in the ink tank can be directly transported to the printing groove, which reduces the space occupied by the equipment and is easy to manage and maintain the equipment. However, the printing roller of the patent application document is also provided with a boosting device and an ink supply channel. The boosting device is provided with a boosting pump, which is connected to the ink supply hole through a pipeline. The internal structure of the printing roller is relatively complex and inconvenient to assemble. Although the space occupied by the equipment is reduced, the overall cost of the printing roller is very high. Once the boosting device and the ink supply channel have problems, it is inconvenient to maintain and the maintenance cost is high. Summary of the invention

[0004] The object of the present invention is to provide a printing roller which can reduce the adverse effects of ink volatilization on the production environment, occupies a small space, has a relatively simple structure, is low in cost and is easy to maintain.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A printing roller comprises a roller body, wherein an ink-absorbing printing plate is fixedly arranged on the outer peripheral surface of the roller body, an ink storage structure is arranged in the roller body, and the ink storage structure supplies ink to the printing plate through ink outlet holes arranged on the outer peripheral surface of the roller body, and the ink outlet holes are covered by the printing plate.

[0007] In order to more stably fix the printing plate on the outer peripheral surface of the roller body, the printing plate is pressed tightly against the outer peripheral surface of the roller body by a pressing structure; in order to prevent the pressing structure from affecting the printing of the printing plate, a printing plate hole adapted to the shape of the printing plate is opened on the pressing structure, and the printing plate body extends outward from the printing plate hole. Such a pressing structure can reduce the impact on the printing of the printing plate.

[0008] In order to facilitate fixing the printing plate through the pressing structure, a convex edge is provided on the inner periphery of the printing plate. The convex edge is located on the inner side of the pressing structure and is pressed tightly against the outer peripheral surface of the roller body by the pressing structure. The outer side surface of the printing plate is located on the outer side of the pressing structure.

[0009] The roller body comprises a coaxial roller, a roller core and a roller shaft, wherein the roller core is located inside the roller and drives the roller to rotate, and the roller shaft runs through the roller core and drives the roller core to rotate. The roller core can improve the strength of the roller body.

[0010] In order to ensure the stability of transmission between the roller and the roller core, the roller and the roller core are connected by a linkage mechanism, and the linkage mechanism includes a front linkage member and a rear linkage member, the front linkage member includes a front fixing block and a front fixing ear, and the front fixing block and the front fixing ear are detachably connected, and the rear linkage member includes a rear fixing block and a rear fixing ear, and the rear fixing block and the rear fixing ear are detachably connected.

[0011] The front fixing block is arranged on the front side of the roller core and arranged radially along the roller core, and the front fixing ear is arranged at the front end of the pressing plate structure and located at the front side of the roller core; the rear fixing block is arranged on the rear side of the roller core and arranged radially along the roller core, and the rear fixing ear is arranged at the rear end of the pressing plate structure and located at the rear side of the roller core, and the front fixing ear and the rear fixing ear are both arranged radially along the roller.

[0012] The front fixing ear is provided with a first open groove adapted to the front fixing block, and the rear fixing ear is provided with a second open groove adapted to the rear fixing block; the front fixing ear is fixed by a front fastening assembly, and the rear fixing ear is fixed by the rear fastening assembly; the front fastening assembly comprises a front support platform, a top screw and a front buckle, and the front buckle is L-shaped, comprises a transverse portion and a vertical portion, and the front buckles are used in pairs and arranged oppositely, the front support platform is fixed to the inner end of the front fixing ear and is arranged between the two front buckles used in pairs along the axial direction of the roller body, the vertical portion of the front buckle is fixed to the front end surface of the roller core by a screw along the axial direction of the roller body, and the transverse portion of the front buckle is pressed tightly on the front side surface of the front fixing ear; the top screw of the front fastening assembly vertically passes through the transverse portion of the front buckle The rear end of the front support platform is provided with a third open groove adapted to match the front fixing block; the rear fastening assembly comprises a rear support platform, a top screw and a rear buckle, the rear buckle is L-shaped, comprises a horizontal portion and a vertical portion, the rear buckles are used in pairs and arranged oppositely, the rear support platform is fixed to the inner end of the rear fixing ear and is arranged axially between the two rear buckles used in pairs along the roller body, the vertical portion of the rear buckle is fixed to the rear end surface of the roller core by a screw along the axial direction of the roller body, and the horizontal portion of the rear buckle is pressed tightly against the rear side surface of the rear fixing ear; the top screw of the rear fastening assembly vertically passes through the horizontal portion of the rear buckle and the inner end of the top screw presses against the rear support platform; the front end of the rear support platform is provided with a fourth open groove adapted to match the rear fixing block.

[0013] A circumferential groove is provided on the outer circumference of the roller core, and the front and rear ends of the roller core are sealed and connected to the inner cavity of the roller, and the circumferential groove and the corresponding part of the inner cavity of the roller together constitute the ink storage structure. The ink storage structure is relatively isolated from the outside, and the ink is inside the roller body, which is not easy to volatilize, thereby reducing pollution to the environment.

[0014] The printing plate is a photosensitive printing plate, which is a high-density sponge. The photosensitive printing plate of the present invention is used in conjunction with photosensitive ink, and the ink on the printed product dries quickly.

[0015] In order to facilitate the addition of ink to the ink storage structure, an ink adding hole connected to the ink storage structure is provided on the roller body, and the ink adding hole is sealed by a plugging wire.

[0016] The present invention is provided with an ink-absorbing printing plate on the outer peripheral surface of the roller body, and an ink storage structure is provided inside the roller body, thereby eliminating the ink tank separately provided on the outside in the prior art. The ink is inside the roller body and is not easy to volatilize, thereby reducing pollution to the environment. The ink of the present invention is supplied from the inside of the printing plate, and the printing plate can absorb ink, so the outside of the printing plate of the present invention does not need to be cleaned. Compared with conventional relief printing, the photosensitive printing plate of the present invention is a high-density sponge, which is not easy to be blocked and is easy to maintain. The photosensitive printing plate of the present invention is used in combination with photosensitive ink, and the ink on the printed matter dries quickly. The ink in the present invention flows out from the ink outlet hole by gravity, and is used in combination with the ink-absorbing printing plate, so the structure is relatively simple, avoiding the booster device and ink conveying device in the prior art, so the printing roller of the present invention occupies a small space and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a stereogram of the present invention;

[0018] Figure 2 is an exploded view of the present invention;

[0019] Figure 3 It is a front view of the printing roller in the present invention;

[0020] Figure 4 yes Figure 3 Sectional view along AA direction. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect that the present invention can produce and the purpose that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the present invention without substantial change of the technical content.

[0022] like Figures 1 to 4 As shown, a printing roller comprises a roller body, an ink-absorbing printing plate 1 is fixedly arranged on the outer peripheral surface of the roller body, an ink storage structure is arranged in the roller body, and the ink storage structure supplies ink to the printing plate 1 through ink outlet holes 18 arranged on the outer peripheral surface of the roller body, and the ink outlet holes 18 are covered by the printing plate 1.

[0023] The printing plate 1 is pressed tightly against the outer peripheral surface of the roller body by a pressing plate structure 2 . A printing plate hole 3 adapted to the shape of the printing plate 1 is opened on the pressing plate structure 2 . The main body of the printing plate 1 extends outward from the printing plate hole 3 .

[0024] The inner periphery of the printing plate 1 is provided with a convex edge 4 , which is located on the inner side of the pressing structure 2 and is pressed tightly against the outer peripheral surface of the roller body by the pressing structure 2 , and the outer side surface of the printing plate 1 is located on the outer side of the pressing structure 2 .

[0025] The roller body includes a coaxial roller 5, a roller core 6 and a roller shaft 7. The roller core 6 is located in the roller 5 and drives the roller 5 to rotate. The roller shaft 7 runs through the roller core 6 and drives the roller core 6 to rotate.

[0026] The roller 5 is connected to the roller core 6 via a linkage mechanism, which includes a front linkage member and a rear linkage member, wherein the front linkage member includes a front fixing block 8 and a front fixing ear 9, and the front fixing block 8 and the front fixing ear 9 are detachably connected, and the rear linkage member includes a rear fixing block and a rear fixing ear, and the rear fixing block and the rear fixing ear are detachably connected.

[0027] The front fixing block 8 is arranged on the front side of the roller core 6 and arranged radially along the roller core 6, and the front fixing ear 9 is arranged at the front end of the pressing structure and located on the front side of the roller core 6; the rear fixing block is arranged on the rear side of the roller core 6 and arranged radially along the roller core 6, and the rear fixing ear is arranged at the rear end of the pressing structure and located on the rear side of the roller core 6, and the front fixing ear 9 and the rear fixing ear are both arranged radially along the roller 5.

[0028] The front fixing ear 9 is provided with a first open groove 10 adapted to the front fixing block 8, and the rear fixing ear is provided with a second open groove adapted to the rear fixing block. The front fixing ear 9 is fixed by a front fastening assembly, and the rear fixing ear is fixed by a rear fastening assembly. The front fastening assembly includes a front support platform 11, a top screw 12 and a front buckle 13. The front buckle 13 is L-shaped, including a transverse portion and a vertical portion. The front buckles 13 are used in pairs and arranged oppositely. The front support platform 11 is fixed to the inner end of the front fixing ear 9 and is arranged between the two front buckles 13 used in pairs along the axial direction of the roller body. The vertical portion of the front buckle 13 is fixed to the front end surface of the roller core 6 by a screw along the axial direction of the roller body. The transverse portion of the front buckle 13 is pressed against the front side surface of the front fixing ear 9; the top screw 12 of the front fastening assembly passes through the transverse portion of the front buckle 13 vertically and the inner end of the top screw 12 presses against the front support platform 11. The rear end of the front support platform 11 is provided with a third opening slot adapted to the front fixing block 8, the third opening slot is connected to the first opening slot 10, and the third opening slot and the first opening slot 10 together form an L-shaped hole adapted to the front fixing block 8. Figure 2 It can be seen from the figure. The rear fastening assembly includes a rear support platform, a top screw 12 and a rear buckle. The rear buckle is L-shaped, including a transverse portion and a vertical portion. The rear buckles are used in pairs and arranged oppositely. The rear support platform is fixed to the inner end of the rear fixing ear and is arranged between the two rear buckles used in pairs along the axial direction of the roller body. The vertical portion of the rear buckle is fixed to the rear end face of the roller core 6 by a screw along the axial direction of the roller body, and the transverse portion of the rear buckle is pressed tightly against the rear side face of the rear fixing ear; the top screw 12 of the rear fastening assembly passes vertically through the transverse portion of the rear buckle and the inner end of the top screw 12 presses against the rear support platform; the front end of the rear support platform is provided with a fourth opening groove adapted to the rear fixing block, the fourth opening groove is connected to the second opening groove, and the fourth opening groove and the second opening groove together form an L-shaped hole adapted to the rear fixing block. Figure 1 It can be seen above.

[0029] A circumferential groove 14 is provided on the outer circumferential surface of the roller core 6, and the front and rear ends of the roller core 6 are sealed and connected to the inner cavity of the roller 5. The front and rear ends of the roller core 6 are both sleeved with sealing rings 16. The circumferential groove 14 and the corresponding part of the inner cavity of the roller 5 together constitute the ink storage structure.

[0030] The printing plate 1 is a photosensitive printing plate, which is a high-density sponge. The photosensitive printing plate of the present invention is used in conjunction with photosensitive ink, and the ink on the printed product dries quickly.

[0031] The roller body is provided with an ink adding hole 15 which is in communication with the ink storage structure. The ink adding hole 15 is sealed by a plugging wire 17 or by a rubber plug.

[0032] The specific working principle is as follows:

[0033] After the printing roller is assembled, photosensitive ink is added to the ink storage structure through the ink adding hole 15. After the photosensitive ink is filled, the ink adding hole 15 is sealed by the plugging wire 17. When the ink outlet hole 18 rotates to the bottom of the roller body, the photosensitive ink passes through the ink outlet hole 18 under the action of gravity and is absorbed by the printing plate 1. When the photosensitive ink in the ink storage structure is used up, the photosensitive ink is added to the ink storage structure through the ink adding hole 15.

[0034] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A printing roller, comprising a roller body, characterized in that: A printing plate capable of absorbing ink is fixedly arranged on the outer peripheral surface of the roller body, an ink storage structure is arranged in the roller body, the ink storage structure supplies ink to the printing plate through ink outlet holes arranged on the outer peripheral surface of the roller body, and the ink outlet holes are covered by the printing plate; the printing plate is pressed tightly against the outer peripheral surface of the roller body by a pressing plate structure, the pressing plate structure is provided with a printing plate hole adapted to the shape of the printing plate, and the printing plate body protrudes outward from the printing plate hole; a convex edge is arranged on the inner periphery of the printing plate, the convex edge is located on the inner side of the pressing plate structure and is pressed tightly against the outer peripheral surface of the roller body by the pressing plate structure, and the outer side surface of the printing plate is located on the outer side of the pressing plate structure; the roller body comprises a coaxial roller, a roller core and a roller shaft, the roller core is located inside the roller and drives the roller shaft to rotate. The roller rotates, and the roller shaft penetrates the roller core and drives the roller core to rotate; the roller is connected to the roller core through a linkage mechanism, and the linkage mechanism includes a front linkage and a rear linkage, and the front linkage includes a front fixing block and a front fixing ear, and the front fixing block and the front fixing ear are detachably connected, and the rear linkage includes a rear fixing block and a rear fixing ear, and the rear fixing block and the rear fixing ear are detachably connected; the front fixing block is arranged on the front side of the roller core and is arranged radially along the roller core, and the front fixing ear is arranged at the front end of the pressing sheet structure and is located at the front side of the roller core; the rear fixing block is arranged on the rear side of the roller core and is arranged radially along the roller core, and the rear fixing ear is arranged at the rear end of the pressing sheet structure and is located at the On the rear side of the roller core, the front fixing ear and the rear fixing ear are both arranged along the radial direction of the roller; the front fixing ear is provided with a first open groove adapted to the front fixing block, and the rear fixing ear is provided with a second open groove adapted to the rear fixing block; the front fixing ear is fixed by a front fastening assembly, and the rear fixing ear is fixed by a rear fastening assembly; the front fastening assembly includes a front support platform, a top screw and a front buckle, the front buckle is L-shaped, including a transverse portion and a vertical portion, the front buckles are used in pairs and arranged oppositely, the front support platform is fixed to the inner end of the front fixing ear and is arranged between the two front buckles used in pairs along the axial direction of the roller body, and the vertical portion of the front buckle is fixed to the roller core by a screw along the axial direction of the roller body. The front end face of the front buckle, the transverse part of the front buckle is pressed tightly on the front side surface of the front fixing ear; the top screw of the front fastening assembly passes through the transverse part of the front buckle vertically and the inner end of the top screw is pressed against the front supporting platform; the rear end of the front supporting platform is provided with a third opening groove adapted to the front fixing block; the rear fastening assembly comprises a rear supporting platform, a top screw and a rear buckle, the rear buckle is L-shaped, comprises a transverse part and a vertical part, the rear buckles are used in pairs and arranged oppositely, the rear supporting platform is fixed to the inner end of the rear fixing ear and is arranged between the two rear buckles used in pairs along the axial direction of the roller body, the vertical part of the rear buckle is fixed to the rear end face of the roller core by a screw along the axial direction of the roller body, and the transverse part of the rear buckle is pressed tightly on the rear side surface of the rear fixing ear;The top screw of the rear fastening assembly passes through the rear buckle transverse part vertically and the inner end of the top screw presses against the rear support platform; the front end of the rear support platform is provided with a fourth opening groove adapted to the rear fixing block; the outer peripheral surface of the roller core is provided with a circumferential groove, the front and rear ends of the roller core are sealed and connected with the inner cavity of the roller, and the circumferential groove and the corresponding part of the inner cavity of the roller together constitute the ink storage structure. ; 2. The printing roller according to claim 1, characterized in that: The printing plate is a photosensitive printing plate.

3. The printing roller according to claim 1, characterized in that: The roller body is provided with an ink adding hole which is connected with the ink storage structure.

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