Cleaning device for pickup roller

Abstract

The utility model relates to a pickup roller cleaning device which comprises an adsorption belt arranged on the circumferential surface of a pickup roller; the unwinding device is arranged on the upstream of the moving direction of the adsorption belt and used for fixing the belt coil and rotationally releasing the adsorption belt; the winding device is arranged at the downstream of the moving direction of the adsorption belt and is used for winding the adsorption belt; the pressing and covering cleaning mechanism is arranged close to the circumferential surface of the pickup roller and used for pressing and covering the adsorption belt to the circumferential surface of the pickup roller and coating the surface of the adsorption belt with a cleaning solution; and the cleaning liquid bin is used for storing cleaning liquid, and the cleaning liquid bin is connected with the pressing mechanism so as to convey the cleaning liquid to the pressing and covering cleaning mechanism. According to the embodiment, paper lint and paper scraps on the surface of the pickup roller can be removed, the clean state of the surface of the pickup roller can be continuously kept, and therefore the digital printing quality is improved; and meanwhile, the service life of the pickup roller is prolonged, the overall maintenance cost of the printing machine is reduced, and the effects of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the field of paper production, in particular to a paper pickup wheel cleaning device. Background Art

[0002] The paper feeding method of the production-type single-sheet digital printing machine is the paper feeding drive via the pickup wheel.

[0003] In this process, due to the uneven quality of paper, over time, paper fibers and scraps will accumulate on the pickup roller, thus affecting the quality of digital printing. The service life of the pickup roller is also greatly affected. Frequent replacement of the pickup roller will increase production and maintenance costs. Utility Model Content

[0004] Based on this, it is necessary to provide a paper pickup wheel cleaning device to address at least some of the problems raised above.

[0005] A paper pickup wheel cleaning device, comprising:

[0006] The adsorption belt is arranged on the circumferential surface of the pickup wheel;

[0007] The unwinding device is arranged upstream of the moving direction of the adsorption belt, and is used to fix the belt roll and rotate to release the adsorption belt;

[0008] A winding device, disposed downstream of the adsorption belt in the moving direction, for winding up the adsorption belt;

[0009] A pressing and cleaning mechanism is arranged near the circumferential surface of the pickup wheel, and is used to press the adsorption belt onto the circumferential surface of the pickup wheel and apply a cleaning liquid to the surface of the adsorption belt;

[0010] The cleaning liquid tank is used to store the cleaning liquid, and the cleaning liquid tank is connected to the pressing mechanism to transport the cleaning liquid to the pressing cleaning mechanism.

[0011] In one embodiment, the pressing and cleaning mechanism is disposed on the upper surface of the adsorption belt.

[0012] In one of the embodiments, the cleaning liquid tank is disposed above the pressing and cleaning mechanism so as to be movable up and down, and is connected to the pressing and cleaning mechanism via a connecting conduit.

[0013] In one embodiment, the pressure-covering cleaning mechanism includes a pressure column, in which a chamber for temporarily storing cleaning liquid is provided, the chamber is respectively connected to the liquid outlet and liquid inlet on the surface of the pressure column, and the liquid inlet is connected to the cleaning liquid tank.

[0014] In one of the embodiments, the pressure column surface is further provided with an air inlet which is in communication with the chamber and is used for allowing air to enter and mix with the cleaning liquid in the chamber.

[0015] In one embodiment, the liquid inlet and the liquid outlet are respectively arranged at the upper and lower ends of the pressure column.

[0016] In one of the embodiments, the length direction of the pressure column is perpendicular to the moving direction of the adsorption belt, and the plurality of liquid outlet holes are distributed along the length direction of the pressure column.

[0017] In one embodiment, the liquid outlet holes are arranged in multiple rows, and the liquid outlet holes are spaced apart and distributed along the circumference of the pressure column, and every two adjacent rows of liquid outlet holes are staggered along the circumference of the pressure column.

[0018] In one embodiment, the adsorption belt is made of non-woven fabric or silica gel.

[0019] In one of the embodiments, the moving speed of the suction belt is lower than the linear speed of the circumferential surface of the pickup wheel.

[0020] The above-mentioned paper pickup wheel cleaning device has at least the following beneficial technical effects:

[0021] This embodiment can remove paper fibers and paper scraps on the surface of the pickup roller, and can continuously keep the surface of the pickup roller clean, thereby improving the quality of digital printing; at the same time, it also extends the service life of the pickup roller, reduces the overall maintenance cost of the printing press, and achieves the effect of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a paper pickup roller cleaning device provided in one embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of a paper pickup roller cleaning device provided in one embodiment of the utility model;

[0024] Figure 3 for Figure 2 The structural diagram of the pressure column in ;

[0025] Figure 4 An internal structural diagram of a pressure column provided by another embodiment of the utility model;

[0026] In the figure,

[0027] 100, pickup wheel;

[0028] 10. Adsorption belt;

[0029] 20. Unwinding device;

[0030] 30. Winding device;

[0031] 40, pressing and cleaning mechanism; 41, pressing column; 41a, liquid outlet; 41b, liquid inlet; 41c, air inlet; 41d, chamber; 41e, liquid channel; 41f, gas channel; 41g, guide blade;

[0032] 50. Cleaning liquid tank; 51. Connecting pipe; 52. Water pump. DETAILED DESCRIPTION

[0033] The utility model will be further described below in conjunction with the accompanying drawings.

[0034] In order to facilitate the understanding of the utility model, the various embodiments defined by the claims of the utility model will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the utility model are given in the drawings, which contain various specific details to help the understanding, but these details should be regarded as exemplary only. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Accordingly, those of ordinary skill in the art will recognize that changes and improvements can be made to the various embodiments described herein without departing from the scope of the utility model defined by the attached claims. In addition, for the sake of clarity and brevity, the description of well-known functions and structures may be omitted.

[0035] It will be apparent to those skilled in the art that the following description of various embodiments of the present invention is provided for illustrative purposes only and not for limiting the present invention as defined by the appended claims.

[0036] Throughout the specification and claims of this application document, the words "include" and "comprise" and variations of the words, such as "include" and "include" mean "including but not limited to", and are not intended to (and will not) exclude other components, wholes or steps. Features, wholes or characteristics described in conjunction with a specific aspect, embodiment or example of the utility model will be understood to be applicable to any other aspect, embodiment or example described herein, unless incompatible therewith.

[0037] It should be understood that the singular forms "a", "an", and "the" include plural references unless the context clearly dictates otherwise. The expressions "including" and / or "may include" used in the present invention are intended to indicate the presence of corresponding functions, operations, or elements, and are not intended to limit the presence of one or more functions, operations, and / or elements. In addition, in the present invention, the terms "including" and / or "having" are intended to indicate the presence of characteristics, quantities, operations, elements, and components, or combinations thereof, disclosed in the application documents. Therefore, the terms "including" and / or "having" should be understood as additional possibilities for the presence of one or more other characteristics, quantities, operations, elements, and components, or combinations thereof.

[0038] In the present invention, the expression "or" includes any or all combinations of the words listed together. For example, "A or B" may include A or B, or may include both A and B.

[0039] It should be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intervening element; when an element is considered to be "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or there can also be an intervening element.

[0040] The terms “upper”, “lower”, “left”, “right”, etc. mentioned in the text are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field to which the present invention belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with the context of the relevant field and this specification, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in this document. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0042] like Figure 1-Figure 3 As shown, in one embodiment of the utility model, a pickup roller cleaning device is provided, comprising:

[0043] The suction belt 10 is arranged on the circumferential surface of the pickup wheel 100;

[0044] The unwinding device 20 is arranged upstream of the moving direction of the adsorption belt 10, and is used to fix the belt roll and rotate to release the adsorption belt 10;

[0045] A winding device 30, disposed downstream of the moving direction of the adsorption belt 10, for winding up the adsorption belt 10;

[0046] The pressing and cleaning mechanism 40 is arranged close to the circumferential surface of the pickup wheel 100 and is used to press the adsorption belt 10 onto the circumferential surface of the pickup wheel 100 and apply a cleaning liquid to the surface of the adsorption belt 10;

[0047] The cleaning liquid tank 50 is used to store the cleaning liquid. The cleaning liquid tank 50 is connected to the pressing mechanism to transport the cleaning liquid to the pressing cleaning mechanism 40 .

[0048] Specifically, the unwinding device 20 and the rewinding device 30 can adopt an unwinding roller or a rewinding roller driven by a motor, and the surface of the unwinding roller or the rewinding roller can be wound with the adsorption belt 10 to form a belt roll. When cleaning the pickup roller 100, it is first necessary to ensure that there is cleaning liquid in the cleaning liquid tank 50, and the pickup roller 100 to be cleaned needs to keep rotating. The unwinding roller and the rewinding roller are started and drive the adsorption belt 10 to move, and the pressing cleaning mechanism 40 presses the adsorption belt 10 to the circumferential surface of the pickup roller 100 and applies the cleaning liquid to the surface of the adsorption belt 10, so that the cleaning liquid is evenly distributed on the surface of the adsorption belt 10; as the unwinding roller and the rewinding roller slowly drive the adsorption belt 10 to move, the paper hair, paper scraps and other dirt on the circumferential surface of the pickup roller 100 can be transferred to the surface of the adsorption belt 10 through rolling contact embossing, thereby achieving the purpose of cleaning.

[0049] This embodiment can remove paper fibers and paper scraps on the surface of the pickup roller 100, and can continuously keep the surface of the pickup roller 100 clean, thereby improving the quality of digital printing; at the same time, it also extends the service life of the pickup roller 100, reduces the overall maintenance cost of the printing press, and achieves the effect of reducing costs and increasing efficiency.

[0050] refer to Figure 2 In some embodiments, the pressing and cleaning mechanism 40 is disposed on the upper surface of the adsorption belt 10 .

[0051] Specifically, the pressing and cleaning mechanism 40 is arranged on the upper surface of the adsorption belt 10. The adsorption belt 10 can be easily pressed to the circumferential surface of the paper pickup roller 100 by the gravity of the pressing and cleaning mechanism 40 itself. At the same time, the cleaning liquid in the pressing and cleaning mechanism 40 can directly flow to the surface of the adsorption belt 10 by gravity, and there is no need to set up other driving mechanisms to drive the pressing and cleaning mechanism 40 to press the adsorption belt 10 or transport the cleaning liquid.

[0052] In some embodiments, the cleaning liquid tank 50 is disposed above the pressing cleaning mechanism 40 so as to be movable up and down, and is connected to the pressing cleaning mechanism 40 via a connecting conduit 51 .

[0053] Specifically, the cleaning liquid tank 50 can be slidably arranged on the guide rail extending up and down through the pulley, and the internal driving mechanism can drive the pulley to slide up and down along the guide rail. When working, the cleaning liquid tank 50 moves downward, and the pressing cleaning mechanism 40 can be pressed down through the connecting conduit 51 until it contacts the adsorption belt 10 and the adsorption belt 10 applies a suitable pressure to the pickup roller 100.

[0054] In this embodiment, the cleaning liquid tank 50 is linked with the pressing cleaning mechanism 40, and the pressing cleaning mechanism 40 can be driven to press down and press the adsorption belt 10 to the circumferential surface of the pickup roller 100 by the up and down movement of the cleaning liquid tank 50, so that the internal connection of the entire device is simple and compact, and no additional driving mechanism is required to drive the pressing cleaning mechanism 40 to press the adsorption belt 10. The cleaning liquid in the cleaning liquid tank 50 can be pumped to the connecting conduit 51 by the water pump 52 at the bottom of the cleaning liquid tank 50, and conveniently transported to the pressing cleaning mechanism 40.

[0055] refer to Figure 2 and Figure 3 In some embodiments, the pressing cleaning mechanism 40 includes a pressing column 41, and a chamber 41d for temporarily storing cleaning liquid is provided in the pressing column 41. The chamber 41d is respectively connected to the liquid outlet 41a and the liquid inlet 41b on the surface of the pressing column 41, and the liquid inlet 41b is connected to the cleaning liquid tank 50.

[0056] Specifically, the cleaning liquid in the cleaning liquid tank 50 can be transported to the pressure column 41 through the liquid inlet 41b. When the circumferential surface of the pressure column 41 contacts the adsorption belt 10 and presses the adsorption belt 10 to the circumferential surface of the paper pickup wheel 100, the cleaning liquid in the chamber 41d directly flows out from the liquid outlet 41a to the surface of the adsorption belt 10.

[0057] refer to Figure 4 In some embodiments, the pressure column 41 is further provided with an air inlet 41c on its surface, which is connected to the chamber 41d, and is used to allow air to enter and mix with the cleaning liquid in the chamber 41d. When rapid liquid discharge is required, the air inlet 41c is opened, and air enters the gas channel 41f connected to the air inlet 41c, and the cleaning liquid enters the liquid channel 41e in the chamber 41d through the liquid inlet 41b. The air and the cleaning liquid are mixed in the chamber 41d and discharged from the liquid outlet 41a, which can avoid the formation of a negative pressure state inside the chamber 41d and promote the rapid discharge of the cleaning liquid from the liquid outlet 41a.

[0058] Furthermore, guide blades 41g are provided inside the chamber 41d for guiding the air flow and the cleaning liquid flow so as to allow the two to mix more smoothly.

[0059] refer to Figure 4In some embodiments, the liquid inlet 41b and the liquid outlet 41a are respectively arranged at the upper and lower ends of the pressure column 41. In the specific configuration, the liquid inlet 41b is located at the upper part of the pressure column 41 so as to be conveniently connected to the cleaning liquid tank 50 above; since the liquid outlet 41a is located at the lower part of the pressure column 41, when the surface of the pressure column 41 contacts the adsorption belt 10 below, the liquid outlet 41a directly adheres to the upper surface of the adsorption belt 10, and the cleaning liquid can flow directly onto the adsorption belt 10, thereby shortening the distance between the liquid outlet 41a and the adsorption belt 10, and improving the coating rate of the cleaning liquid on the surface of the adsorption belt 10; since the liquid outlet 41a directly adheres to the upper surface of the adsorption belt 10, as the adsorption belt 10 continues to move, the cleaning liquid is coated on the surface of the adsorption belt 10 more evenly.

[0060] refer to Figure 3 In some embodiments, there are multiple liquid outlet holes 41a distributed on the cylindrical surface of the pressure column 41. Multiple liquid outlet holes 41a discharge liquid from different parts at the same time, which can improve the speed of the cleaning liquid flowing to the surface of the adsorption belt 10 and the coating uniformity.

[0061] refer to Figure 2 In some embodiments, the length direction of the pressure column 41 is perpendicular to the moving direction of the adsorption belt 10 , and the plurality of liquid outlet holes 41 a are distributed along the length direction of the pressure column 41 .

[0062] Specifically, when the length direction of the pressure column 41 is perpendicular to the moving direction of the adsorption belt 10 and the pressure column 41 is pressed against the surface of the adsorption belt 10, a plurality of liquid outlets 41a are distributed along the width direction of the adsorption belt 10, and the cleaning liquid can flow to various parts of the adsorption belt 10 in the width direction, thereby improving the comprehensiveness of the cleaning liquid coating on the surface of the adsorption belt 10.

[0063] refer to Figure 3 In some embodiments, the liquid outlet holes 41a are arranged in multiple rows, and the liquid outlet holes 41a are arranged at intervals along the circumference of the pressure column 41, and every two adjacent rows of liquid outlet holes 41a are staggered along the circumference of the pressure column 41. Every two adjacent rows of liquid outlet holes 41a are staggered along the circumference of the pressure column 41, which can avoid the surface of the adsorption belt 10 between the two liquid outlet holes 41a in a single row from not being coated when only a single row of liquid outlet holes 41a is provided, thereby reducing the probability of coating leakage on the surface of the adsorption belt 10.

[0064] In some embodiments, the adsorption belt 10 is made of non-woven fabric or silica gel. Specifically, non-woven fabric or silica gel has a strong adsorption capacity for paper hair and paper scraps, and is suitable for the technical solution of the present application.

[0065] In some embodiments, the moving speed of the suction belt 10 is lower than the linear speed of the circumferential surface of the pickup wheel 100 .

[0066] Specifically, when the unwinding device 20 and the rewinding device 30 cooperate with the slow curtain to drive the adsorption belt 10 to move, since the design of the present embodiment makes the paper pickup wheel 100 have a faster circumferential surface linear speed than the adsorption belt 10, the circumferential surface of the paper pickup wheel 100 and the surface of the adsorption belt 10 are in relative sliding friction contact with a large speed difference, and the speed difference between the two is utilized to more quickly wipe the dirt such as paper fibers and paper scraps on the circumferential surface of the paper pickup wheel 100 to the surface of the adsorption belt 10.

[0067] Through the arrangement of this embodiment, dirt such as paper fibers and paper scraps can be wiped onto the surface of the adsorption belt 10 by "sliding friction". Compared with the rolling contact between the circumferential surface of the paper pickup wheel 100 and the adsorption belt 10, and the method of transferring the dirt to the surface of the adsorption belt 10 by imprinting, the cleaning speed of the paper pickup wheel 100 can be accelerated and the cleaning efficiency can be improved.

[0068] In some embodiments, a limit device such as a tape thickness detection sensor is provided on the unwinding device 20. Specifically, the tape thickness detection sensor is activated before the suction tape 10 on the unwinding device 20 is completely released, thereby reminding the operator to replace the new suction tape in time.

[0069] In the above description, although expressions such as "first" and "second" may be used to describe the various elements of the utility model, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of the corresponding elements. The above expressions are used to distinguish one component from another component.

[0070] The terms used in the specification of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. A singular expression includes a plural expression unless there is a significant difference in context or scheme between them.

[0071] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

[0072] Those skilled in the art will understand that the various technical features of the above-described embodiments may be omitted, added or combined in any manner accordingly. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, and the simple transformation methods that can be thought of by those skilled in the art and the solutions for making adaptive and functional structural transformations to the prior art should be considered to be within the scope of this specification.

[0073] The above-mentioned embodiments only express several implementation methods of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that although the utility model has been shown and described with reference to various embodiments, for ordinary technicians in the field, various deformations and improvements in several forms and details can be made without departing from the concept of the utility model, and without departing from the scope of the utility model defined by the attached claims, all of which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A paper pickup wheel cleaning device, characterized in that: include: An adsorption belt (10) is arranged on the circumferential surface of the paper pickup wheel (100); the adsorption belt (10) is made of non-woven fabric; An unwinding device (20) is arranged upstream of the moving direction of the adsorption belt (10) and is used to fix the belt roll and rotate to release the adsorption belt (10); A winding device (30) is arranged downstream of the adsorption belt (10) in the moving direction and is used to wind up the adsorption belt (10); A pressing and cleaning mechanism (40) is arranged close to the circumferential surface of the pickup wheel (100) and is used to press the adsorption belt (10) onto the circumferential surface of the pickup wheel (100) and apply a cleaning liquid to the surface of the adsorption belt (10); The cleaning liquid tank (50) is used to store cleaning liquid. The cleaning liquid tank (50) is connected to the pressing mechanism to transport the cleaning liquid to the pressing cleaning mechanism (40). A water pump (52) is provided at the lower part of the cleaning liquid tank (50). The water pump (52) is connected to the pressing cleaning mechanism (40) via a connecting conduit (51).

2. The pickup roller cleaning device according to claim 1, characterized in that: The pressing and cleaning mechanism (40) is arranged on the upper surface of the adsorption belt (10).

3. The pickup roller cleaning device according to claim 1, characterized in that: The cleaning liquid tank (50) is disposed above the pressing cleaning mechanism (40) in a manner that it can move up and down, and is connected to the pressing cleaning mechanism (40) via a connecting conduit (51).

4. The pickup roller cleaning device according to claim 1, characterized in that: The pressure-coating cleaning mechanism (40) comprises a pressure column (41), wherein a chamber (41d) for temporarily storing cleaning liquid is provided in the pressure column (41), wherein the chamber (41d) is respectively connected to a liquid outlet (41a) and a liquid inlet (41b) on the surface of the pressure column (41), and the liquid inlet (41b) is connected to the cleaning liquid tank (50).

5. The pickup roller cleaning device according to claim 4, characterized in that: The surface of the pressure column (41) is also provided with an air inlet (41c) which is in communication with the chamber (41d) and is used for allowing air to enter and mix with the cleaning liquid in the chamber (41d).

6. The pickup roller cleaning device according to claim 4, characterized in that: The liquid inlet (41b) and the liquid outlet (41a) are respectively arranged at the upper and lower ends of the pressure column (41).

7. The pickup roller cleaning device according to claim 4, characterized in that: The length direction of the pressure column (41) is perpendicular to the moving direction of the adsorption belt (10), and there are a plurality of liquid outlet holes (41a), which are distributed along the length direction of the pressure column (41).

8. The pickup roller cleaning device according to claim 4, characterized in that: The liquid outlet holes (41a) are arranged in multiple rows, and the liquid outlet holes (41a) are spaced and distributed along the circumference of the pressure column (41), and every two adjacent rows of liquid outlet holes (41a) are staggered along the circumference of the pressure column (41).

9. The pickup roller cleaning device according to claim 1, characterized in that: The moving speed of the adsorption belt (10) is less than the circumferential surface linear speed of the pickup wheel (100).

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