Paper feeding system and printer

Abstract

The utility model discloses a paper feeding system and a printer, and belongs to the technical field of printing equipment, the paper feeding system comprises an upper compression roller, a lower compression roller, an adsorption platform and an adsorption fan, and the upper compression roller and the lower compression roller are matched to clamp a printing medium from the vertical direction and drive the printing medium to move; and the adsorption fan is mounted on the adsorption platform and is used for enabling the printing medium to be in contact with the surface of the adsorption platform through air draft and generating friction. The paper feeding system can determine the sliding error and control the sliding error to be constant, thereby being beneficial to controlling the paper feeding error and achieving the effect of improving the printing quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing equipment, and particularly relates to a paper feeding system and a printer. Background Art

[0002] There is a printer that is equipped with an upper pressure roller and a lower pressure roller. The upper pressure roller and the lower pressure roller cooperate to clamp the printing medium and drive the printing medium to move. However, under this driving mode, there is always an inevitable sliding error between the printing medium and the upper pressure roller, and between the printing medium and the lower pressure roller. This sliding error is related to the movement resistance of the printing medium. In actual application, the movement resistance of the printing medium is often affected by various factors and fluctuates (for example, the movement resistance is affected by the roll diameter of the roll material), so that the sliding error cannot be determined. The uncertain sliding error leads to the uncontrollable paper feeding accuracy of the printing medium, which ultimately affects the printing quality.

[0003] Therefore, the existing technology needs to be improved and developed. Utility Model Content

[0004] The utility model aims to provide a paper feeding system and a printer, which can determine a sliding error and control the sliding error to be constant, thereby facilitating the control of the paper feeding error and achieving the effect of improving the printing quality.

[0005] In the first aspect, the utility model provides a paper feeding system, including an upper pressure roller and a lower pressure roller, wherein the upper pressure roller and the lower pressure roller cooperate to clamp the printing medium from the upper and lower directions and drive the printing medium to move, and the paper feeding system also includes an adsorption platform and an adsorption fan, wherein the adsorption fan is installed on the adsorption platform and is used to exhaust air to make the printing medium contact with the surface of the adsorption platform and generate friction.

[0006] The paper feeding system provided by the utility model controls the negative pressure to make the moving resistance of the printing medium constant, thereby making the sliding error a certain value, making the paper feeding error controllable, and further facilitating improving the printing quality.

[0007] Furthermore, a plurality of adsorption holes are provided on one side of the adsorption platform close to the printing medium, and all the adsorption holes are connected to the adsorption fan; the adsorption fan adsorbs the printing medium on the adsorption platform by exhausting air.

[0008] It is beneficial to improve the control accuracy of suction, to accurately control paper feeding errors, and to further improve printing quality.

[0009] Furthermore, the adsorption platform includes a base and a mounting plate, the mounting plate is mounted on the base, the mounting plate is provided with a mounting groove, and the adsorption fan is detachably mounted in the mounting groove.

[0010] It is convenient for users to repair or replace the adsorption fan, which is beneficial to reduce maintenance costs and improve maintenance efficiency.

[0011] Furthermore, the mounting plate is provided with a plurality of the mounting grooves, the plurality of the mounting grooves are arranged in a straight line along the left-right direction, and each of the mounting grooves can be equipped with one of the adsorption fans.

[0012] Targetedly control implementation costs while improving applicability.

[0013] Furthermore, the adsorption platform also includes a grid plate, which is mounted on the base and located on one side of the air inlet of the adsorption fan; the adsorption fan adsorbs the printing medium on the grid plate by exhausting air.

[0014] Furthermore, the adsorption platform also includes a baffle, which is slidably disposed on the base and is located between the adsorption fan and the grille plate. The baffle can reciprocate in the left-right direction to shield the grille plate.

[0015] Furthermore, the adsorption platform includes two baffles, which are arranged opposite to each other and can move closer to or farther from each other in the left-right direction;

[0016] The baffle plate is provided with a stopper protruding upward, and the two stoppers of the two baffle plates are arranged opposite to each other along the left-right direction and are respectively located at the left and right sides of the base.

[0017] Furthermore, the mounting plate is detachably connected to the base.

[0018] Furthermore, the base is provided with a slot extending in the left-right direction, and the mounting plate is inserted into the slot.

[0019] In a second aspect, the utility model provides a printer, comprising the above-mentioned paper feeding system.

[0020] From the above, it can be seen that the paper feeding system of the utility model uses negative pressure adsorption to control the contact between the printing medium and the adsorption platform and generate friction resistance. The friction resistance acts as the movement resistance of the printing medium and affects the movement of the printing medium. However, because the friction resistance is generated by negative pressure, the user can control the adsorption fan to generate a constant negative pressure to keep the friction force unchanged, thereby making the sliding error a certain value, achieving the effect of controllable paper feeding error, which is beneficial to improving printing quality.

[0021] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the embodiments of the utility model. The purpose and other advantages of the utility model can be achieved and obtained by the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the first paper feeding system provided in an embodiment of the utility model.

[0023] Figure 2 This is a schematic structural diagram of a second paper feeding system provided in an embodiment of the utility model.

[0024] Figure 3 This is an assembly diagram of the first adsorption platform and adsorption fan in the embodiment of the utility model.

[0025] Figure 4 It is an assembly diagram of the second adsorption platform and adsorption fan in the embodiment of the utility model.

[0026] Figure 5 It is an exploded view of the second adsorption platform and adsorption fan in the embodiment of the utility model.

[0027] Figure 6 for Figure 5 Schematic diagram of the local structure marked with a.

[0028] Figure 7 It is a side view of the second adsorption platform and the adsorption fan after the baffle is removed in the embodiment of the utility model.

[0029] Description of labels:

[0030] 100, upper pressure roller; 200, lower pressure roller; 300, printing medium; 400, adsorption platform; 410, adsorption hole; 420, base; 421, slot; 430, mounting plate; 431, mounting groove; 440, grille plate; 450, baffle; 451, block; 500, adsorption fan. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0036] It should be noted that the “up and down direction” and “left and right direction” mentioned below are based on the attached Figure 1 and attached Figure 2 The arrows are for reference. The “left-right direction” is the width direction of the printing medium 300 , and the length direction of the printing medium 300 is the paper feeding direction.

[0037] Reference Figure 1 and attached Figure 2 The utility model provides a paper feeding system, including an upper pressure roller 100 and a lower pressure roller 200, the upper pressure roller 100 and the lower pressure roller 200 cooperate to clamp the printing medium 300 from the upper and lower directions and drive the printing medium 300 to move, the paper feeding system also includes an adsorption platform 400 and an adsorption fan 500, the adsorption fan 500 is installed on the adsorption platform 400 and is used to exhaust air to make the printing medium 300 contact with the surface of the adsorption platform 400 and generate friction.

[0038] In this embodiment, the adsorption fan 500 draws air so that the adsorption platform 400 generates suction on the printing medium 300, so that the printing medium 300 contacts the adsorption platform 400 and generates friction resistance. Since the structural dimensions of the adsorption platform 400 are fixed, the contact area of ​​the adsorption platform 400 and the printing medium 300 is fixed, so the friction resistance is mainly affected by the suction generated by the adsorption platform 400. Therefore, the user can control the adsorption fan 500 to make the adsorption platform 400 generate a constant negative pressure, thereby ensuring that the friction resistance remains unchanged and realizing the conversion of the sliding error into a fixed value. In actual application, after the user determines the sliding error, the sliding error can be compensated so that the printing medium 300 is accurately moved to the specified position, thereby achieving the effect of eliminating paper feeding errors, which is beneficial to improving printing quality.

[0039] In certain embodiments, referring to Figure 1 and attached Figure 3A plurality of adsorption holes 410 are provided on one side of the adsorption platform 400 close to the printing medium 300 , and all the adsorption holes 410 are connected to the adsorption fan 500 ; the adsorption fan 500 adsorbs the printing medium 300 on the adsorption platform 400 by exhausting air.

[0040] In this embodiment, the plurality of adsorption holes 410 are evenly distributed on the adsorption platform 400 so that each position of the printing medium 300 can be subjected to uniform suction, thereby facilitating improved control accuracy of the suction force, facilitating accurate control of paper feeding errors, and further improving printing quality.

[0041] In certain embodiments, referring to Figure 2 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 7 The adsorption platform 400 includes a base 420 and a mounting plate 430. The mounting plate 430 is mounted on the base 420. The mounting plate 430 is provided with a mounting groove 431. The adsorption fan 500 is detachably mounted in the mounting groove 431. The detachable installation of the adsorption fan 500 is convenient for users to repair or replace the adsorption fan 500, which is beneficial to reducing maintenance costs and improving maintenance efficiency.

[0042] In certain embodiments, referring to Figure 5 The mounting plate 430 is provided with a plurality of mounting slots 431, and the plurality of mounting slots 431 are arranged in a straight line along the left-right direction. Each mounting slot 431 can be equipped with an adsorption fan 500. The user can determine the number of adsorption fans 500 to be installed according to the width size of the printing medium 300, thereby improving the applicability while controlling the implementation cost in a targeted manner.

[0043] In certain embodiments, referring to Figure 2 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 7 The adsorption platform 400 further includes a grille plate 440 , which is mounted on the base 420 and located on one side of the air inlet of the adsorption fan 500 ; the adsorption fan 500 adsorbs the printing medium 300 on the grille plate 440 by exhausting air.

[0044] In this embodiment, due to structural limitations, the adsorption fan 500 is generally unable to generate uniform suction. Therefore, in this embodiment, a grid plate 440 is provided to disperse and guide the airflow, so that the suction force acts evenly on the printing medium 300, ensuring that each position in the width direction of the printing medium 300 is uniformly stressed, which is beneficial to accurately control the paper feeding error.

[0045] In certain embodiments, referring to Figure 2 , Attachment Figure 4 and attached Figure 5The adsorption platform 400 further includes a baffle 450 , which is slidably disposed on the base 420 and located between the adsorption fan 500 and the grille plate 440 . The baffle 450 can reciprocate in the left-right direction to shield the grille plate 440 .

[0046] In this embodiment, since the printing medium 300 has different width sizes, in actual application it is only necessary to control the suction force to act on various positions in the width direction of the printing medium 300. Therefore, the user can use the baffle 450 to block the adsorption fan 500 and then control the suction range of the grille plate 440, thereby being suitable for printing media 300 of various width sizes, thereby improving overall applicability.

[0047] In certain embodiments, referring to Figure 2 , Attachment Figure 4 and attached Figure 5 The adsorption platform 400 includes two baffles 450, which are disposed opposite to each other and can move closer to or farther from each other in the left-right direction;

[0048] The baffle plate 450 is provided with a stopper 451 protruding upward, and the two stoppers 451 of the two baffle plates 450 are arranged opposite to each other along the left-right direction and are respectively located on the left and right sides of the base 420 .

[0049] In actual application, the printing medium 300 generally passes through the adsorption platform 400 in the center, so two baffles 450 that can move in opposite directions are set to control the suction range to be in the center of the adsorption platform 400, thereby adapting to the moving position of the printing medium 300, which is beneficial to ensure that each position in the width direction of the printing medium 300 can be evenly affected by the suction.

[0050] Furthermore, the upwardly protruding block 451 can limit the left-right position of the printing medium 300, thereby preventing the printing medium 300 from accidentally escaping from the adsorption platform 400. At the same time, the user can use the block 451 as a force point to drag the baffle 450, thereby facilitating the user to control the position of the baffle 450.

[0051] In some embodiments, the mounting plate 430 and the base 420 are detachably connected, and the detachable connection is, for example, a snap connection, a screw connection, a key connection, a pin connection, a magnetic connection, etc., which greatly facilitates users to repair or replace the mounting plate 430 and the base 420.

[0052] In certain preferred embodiments, Figure 6 and attached Figure 7 The base 420 is provided with a slot 421 extending in the left-right direction, and the mounting plate 430 is plugged into the slot 421. The plug-in connection has high reliability and the user can install and remove the mounting plate 430 without the aid of tools, which is conducive to reducing the difficulty of installation and disassembly and improving the efficiency of installation and disassembly.

[0053] The utility model provides a printer, comprising the paper feeding system of the above embodiment.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A paper feeding system, comprising an upper pressing roller (100) and a lower pressing roller (200), wherein the upper pressing roller (100) and the lower pressing roller (200) cooperate to clamp a printing medium (300) from a top and bottom direction and drive the printing medium (300) to move, characterized in that: The paper feeding system further comprises an adsorption platform (400) and an adsorption fan (500), wherein the adsorption fan (500) is mounted on the adsorption platform (400) and is used to draw air so that the printing medium (300) contacts the surface of the adsorption platform (400) and generates friction.

2. The paper feeding system according to claim 1, characterized in that: A plurality of adsorption holes (410) are provided on one side of the adsorption platform (400) close to the printing medium (300), and all the adsorption holes (410) are connected to the adsorption fan (500); the adsorption fan (500) adsorbs the printing medium (300) on the adsorption platform (400) by exhausting air.

3. The paper feeding system according to claim 1, characterized in that: The adsorption platform (400) comprises a base (420) and a mounting plate (430), wherein the mounting plate (430) is mounted on the base (420), the mounting plate (430) is provided with a mounting groove (431), and the adsorption fan (500) is detachably mounted in the mounting groove (431).

4. The paper feeding system according to claim 3, characterized in that: The mounting plate (430) is provided with a plurality of mounting grooves (431), the plurality of mounting grooves (431) being arranged in a straight line along the left-right direction, and each mounting groove (431) is capable of mounting one adsorption fan (500).

5. The paper feeding system according to claim 4, characterized in that: The adsorption platform (400) further comprises a grille plate (440), wherein the grille plate (440) is mounted on the base (420) and is located on one side of the air inlet of the adsorption fan (500); the adsorption fan (500) adsorbs the printing medium (300) on the grille plate (440) by exhausting air.

6. The paper feeding system according to claim 5, characterized in that: The adsorption platform (400) further comprises a baffle (450), the baffle (450) being slidably disposed on the base (420) and being located between the adsorption fan (500) and the grille plate (440), the baffle (450) being capable of reciprocating in a left-right direction to shield the grille plate (440).

7. The paper feeding system according to claim 6, characterized in that: The adsorption platform (400) comprises two baffles (450), the two baffles (450) being arranged opposite to each other and being able to move closer to or farther from each other in a left-right direction; The baffle plate (450) is provided with a baffle block (451) protruding upwards, and the two baffle blocks (451) of the two baffle plates (450) are arranged opposite to each other in the left-right direction and are respectively located on the left and right sides of the base (420).

8. The paper feeding system according to claim 3, characterized in that: The mounting plate (430) is detachably connected to the base (420).

9. The paper feeding system according to claim 8, characterized in that: The base (420) is provided with a slot (421) extending in the left-right direction, and the mounting plate (430) is inserted into the slot (421).

10. A printer, characterized in that: Comprising a paper feeding system as described in any one of claims 1-9.

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