Paper pressing guide mechanism and printing equipment comprising same

Abstract

The utility model discloses a paper pressing guide mechanism and printing equipment comprising the same. The paper pressing guide mechanism comprises a rotating pressing piece and a cam shaft. The first end of the rotating pressing piece of the paper pressing guide mechanism is provided with the rotating friction part, the rotating friction part is provided with the lubricating groove, and the solid lubricating grease is arranged in the lubricating groove; when the cam shaft rotates every time, the cam convex part of the cam shaft is pressed in the lubricating groove of the rotating friction part, the solid lubricating grease in the lubricating groove is used for lubricating the cam convex part, and lubricating contact between the rotating pressing piece and the cam shaft can be kept for a long time; abnormal noise caused by friction due to abrasion between the rotating pressing piece and the cam shaft or difficulty in pressing the side, deviating from the cam shaft, of the rotating pressing piece and the feeding roller due to serious abrasion are avoided, and the function of the paper pressing guide mechanism can be kept for a long time.

Description

Technical Field

[0001] This application relates to the field of printing technology, specifically to a paper pressing and guiding mechanism and a printing device including the same. Background Technology

[0002] With the development of printing technology, there are more and more types of printers. With the widespread use of printers, it has been found that many printer malfunctions involve abnormal noise caused by friction between the rotating pressure plate and camshaft in the paper pressure guide mechanism during rotation. The main reason for this is that the rotating pressure plate and camshaft of the paper pressure guide mechanism wears down during long-term use. Even if the rotating pressure plate and camshaft do not produce abnormal noise, severe wear can cause the side of the rotating pressure plate away from the camshaft to be difficult to press tightly against the feed roller. Therefore, how to avoid wear between the rotating pressure plate and camshaft during long-term use has become an urgent technical problem to be solved. Utility Model Content

[0003] This application provides a paper pressing guide mechanism, which can solve the technical problem that in current printers, during long-term use, wear between the rotating pressure plate and the camshaft in the paper pressing guide mechanism causes friction and abnormal noise, or severe wear makes it difficult for the rotating pressure plate to press tightly against the feed roller on the side away from the camshaft.

[0004] This application provides a paper pressing and guiding mechanism, which includes a rotating pressing plate and a cam shaft. The rotating pressing plate has a rotating shaft in the middle and a rotating friction part at the first end. The rotating friction part has a lubrication groove, and the lubrication groove contains solid lubricant. The cam shaft has a cam convex part and a cam back side. Each time the cam shaft rotates, the cam convex part presses against the lubrication groove of the rotating friction part, and the solid lubricant in the lubrication groove lubricates the cam convex part.

[0005] Furthermore, the extending direction of the lubrication groove is perpendicular to the extending direction of the rotating shaft.

[0006] Furthermore, the cross-section of the lubrication groove is rectangular or elliptical.

[0007] Furthermore, the second end of the rotating pressure plate is provided with at least one damping wheel, and the surface of the damping wheel is provided with an anti-slip structure.

[0008] Furthermore, the paper pressing guide mechanism also includes a feeding roller, which is correspondingly arranged with the damping roller; when the cam protrusion presses against the lubrication groove of the rotating friction part, the feeding roller and the damping roller are pressed together; when the back of the cam corresponds to the rotating friction part, a feeding gap is formed between the feeding roller and the damping roller.

[0009] Furthermore, the second end of the rotating pressure plate is provided with two damping rollers, which are arranged in a straight line, and the extending direction of the damping rollers is parallel to the extending direction of the rotating shaft.

[0010] Furthermore, the paper pressing guide mechanism also includes a rotating support base, on both sides of the upper surface of the rotating support base, and the two ends of the rotating shaft are rotatably disposed in the rotating rings.

[0011] Furthermore, when the cam protrusion presses against the lubrication groove of the rotating friction part, the angle between the plane of the rotating support and the plane of the rotating pressure plate is less than or equal to 30°.

[0012] Furthermore, the extending direction of the rotating friction part is perpendicular to the plane where the rotating pressure plate is located, and the end of the rotating friction part is provided with the lubrication groove, the depth direction of the lubrication groove being parallel to the extending direction of the rotating friction part.

[0013] This application also provides a printing apparatus that includes the paper pressing and guiding mechanism described in any of the preceding claims.

[0014] The paper pressing and guiding mechanism and the printing device including it provided in this application embodiment are configured such that the first end of the rotating pressure plate of the paper pressing and guiding mechanism is provided with a rotating friction part, the rotating friction part is provided with a lubrication groove, and the lubrication groove is provided with solid lubricant; each time the camshaft rotates, the cam cam of the camshaft presses against the lubrication groove of the rotating friction part, and the solid lubricant in the lubrication groove lubricates the cam cam, which can maintain lubricated contact between the rotating pressure plate and the camshaft for a long time, avoid friction caused by wear between the rotating pressure plate and the camshaft, avoid abnormal noise caused by friction, or severe wear that makes it difficult for the rotating pressure plate to press against the feed roller on the side away from the camshaft, and maintain the function of the paper pressing and guiding mechanism for a long time. Attached Figure Description

[0015] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the lower surface structure of the paper pressing and guiding mechanism provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the structure of the paper pressing guide mechanism provided in this application when the cam protrusion is pressed into the lubrication groove of the rotating friction part.

[0018] Figure 3 This is a schematic diagram of the structure of the paper pressing guide mechanism provided in the embodiments of this application when a feeding gap is formed between the feeding roller and the damping roller.

[0019] The markings in the diagram are as follows:

[0020] Rotate the pressure plate 1, the rotating shaft 2, the rotating friction part 3, the lubrication groove 4, the damping wheel 5, the rotating support seat 6, and the rotating hole ring 7. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] For details, please refer to Figure 1 , Figure 2 , Figure 3This application provides a paper pressing and guiding mechanism, which includes a rotating pressing plate 1 and a cam shaft. The rotating pressing plate 1 has a rotating shaft 2 in the middle and a rotating friction part 3 at the first end of the rotating pressing plate 1. The rotating friction part 3 has a lubrication groove 4 and a solid lubricant in the lubrication groove 4. The cam shaft has a cam convex part and a cam back side. Each time the cam shaft rotates, the cam convex part presses against the lubrication groove 4 of the rotating friction part 3, and the solid lubricant in the lubrication groove 4 lubricates the cam convex part.

[0026] In this embodiment, the solid lubricant in the lubrication groove 4 is used to lubricate the cam protrusion, which can maintain lubrication contact between the rotating pressure plate 1 and the cam shaft for a long time. This avoids friction caused by wear between the rotating pressure plate 1 and the cam shaft, which can cause abnormal noise or severe wear that makes it difficult for the rotating pressure plate 1 to press against the feed roller on the side away from the cam shaft. This can maintain the function of the paper pressing guide mechanism for a long time.

[0027] The solid lubricant may include solid grease, which is a lubricant composed of grease and ultra-high molecular weight polyethylene.

[0028] In addition, the solid lubricant may include materials such as graphite, molybdenum disulfide, and polytetrafluoroethylene. These solid lubricants have excellent lubrication properties and can effectively reduce friction and wear of the shaft 2 during operation, thereby reducing abnormal noise.

[0029] Graphite is a natural mineral with inherent lubricating properties and is widely used in various lubricants. It possesses excellent self-lubricating, anti-wear, and anti-oxidation properties, making it suitable for high-temperature, high-pressure, and high-speed frictional environments. Therefore, it is often used as a component of shaft lubricating greases.

[0030] Molybdenum disulfide is also a commonly used solid lubricant. It has a low coefficient of friction and high load-bearing capacity, and can maintain stable lubrication performance under extreme conditions. Adding molybdenum disulfide to the shaft 2 lubricant can significantly improve the lubrication effect and reduce abnormal noise.

[0031] In addition, polytetrafluoroethylene (PTFE) is also a common solid lubricant. It has an extremely low coefficient of friction and good chemical stability, maintaining excellent lubrication performance over a wide temperature range. PTFE lubricating paste is commonly used in applications requiring high lubricity and low friction, such as the lubrication of shafts in precision instruments and office equipment.

[0032] Furthermore, the extending direction of the lubrication groove 4 is perpendicular to the extending direction of the rotating shaft 2. This arrangement ensures that the solid lubricant in the lubrication groove 4 contacts and lubricates the cam protrusion.

[0033] Furthermore, the cross-section of the lubrication groove 4 is rectangular or elliptical. It is understood that the cross-sectional shape of the lubrication groove 4 is designed to retain solid lubricant and ensure that the solid lubricant within the lubrication groove 4 provides contact lubrication to the cam protrusion.

[0034] Please see Figure 1 , Figure 2 , Figure 3 The second end of the rotating pressure plate 1 is provided with at least one damping roller 5, and the surface of the damping roller 5 is provided with an anti-slip structure. The anti-slip structure can provide frictional resistance to press the printing paper, keep the printing paper stably pressed when not printing, and prevent the printing paper from misaligning.

[0035] Furthermore, the paper-pressing guide mechanism also includes a feeding roller, which is correspondingly arranged with the damping roller 5. When the cam protrusion presses against the lubrication groove 4 of the rotating friction part 3, the feeding roller and the damping roller 5 are pressed together. When the back of the cam corresponds to the rotating friction part 3, a feeding gap is formed between the feeding roller and the damping roller 5. When the feeding roller and the damping roller 5 are pressed together, the printing paper is stably pressed between them. When the feeding gap is formed, the printing paper enters the printing device through the feeding gap for printing.

[0036] Please see Figure 1 , Figure 2 , Figure 3 The second end of the rotating pressure plate 1 is provided with two damping rollers 5, which are arranged in a straight line and extend in a direction parallel to the extension direction of the rotating shaft 2. By providing two damping rollers 5 on each rotating pressure plate 1, the printing paper can be pressed firmly by one damping roller 5 on each side of each rotating pressure plate 1, preventing the printing paper from shifting or misaligning.

[0037] Please see Figure 1 , Figure 2 , Figure 3 The paper pressing and guiding mechanism also includes a rotating support base 6. Rotating hole rings 7 are provided on both sides of the upper surface of the rotating support base 6, and the two ends of the rotating shaft 2 are rotatably disposed within the rotating hole rings 7. The lower surface of the rotating support base 6 can be fixedly connected to the housing of the printing device. As the camshaft rotates, the rotating pressure plate 1 can be controlled to rotate up and down along the rotating shaft 2, which corresponds to the rotating support base 6.

[0038] Furthermore, when the cam protrusion presses against the lubrication groove 4 of the rotating friction part 3, the angle between the plane of the rotating support 6 and the plane of the rotating pressure plate 1 is less than or equal to 30°.

[0039] Furthermore, the extending direction of the rotating friction part 3 is perpendicular to the plane of the rotating pressure plate 1, and the end of the rotating friction part 3 is provided with the lubrication groove 4, the depth direction of the lubrication groove 4 being parallel to the extending direction of the rotating friction part 3. The rotating friction part 3 provides a structure with the lubrication groove 4 recessed, ensuring sufficient space within the lubrication groove 4 to store solid lubricant, thus maintaining sufficient solid lubricant for long-term lubrication of the cam protrusion and preventing wear between the rotating pressure plate 1 and the camshaft.

[0040] This application also provides a printing apparatus that includes the paper pressing and guiding mechanism described in any of the preceding claims.

[0041] The paper pressing guide mechanism and printing equipment including the present application embodiment are provided with a rotating friction part 3 at the first end of the rotating pressure plate 1 of the paper pressing guide mechanism. The rotating friction part 3 is provided with a lubrication groove 4, and the lubrication groove 4 is provided with solid lubricant. Each time the camshaft rotates, the cam cam of the camshaft presses against the lubrication groove 4 of the rotating friction part 3. The solid lubricant in the lubrication groove 4 lubricates the cam cam, which can maintain lubrication contact between the rotating pressure plate 1 and the camshaft for a long time. This avoids friction and abnormal noise caused by wear between the rotating pressure plate 1 and the camshaft, or severe wear that makes it difficult for the side of the rotating pressure plate 1 away from the camshaft to press tightly against the feed roller. This can maintain the function of the paper pressing guide mechanism for a long time.

[0042] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0043] The foregoing has provided a detailed description of a paper pressing and guiding mechanism and a printing device including the same, as provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A paper pressing and guiding mechanism, characterized in that, The paper pressing and guiding mechanism includes a rotating pressing plate and a cam shaft; the rotating pressing plate has a rotating shaft in the middle, and a rotating friction part at the first end of the rotating pressing plate. The rotating friction part has a lubrication groove, and a solid lubricant is placed in the lubrication groove; the cam shaft has a cam convex part and a cam back side. Each time the cam shaft rotates, the cam convex part presses against the lubrication groove of the rotating friction part, and the solid lubricant in the lubrication groove lubricates the cam convex part.

2. The paper pressing and guiding mechanism as described in claim 1, characterized in that, The extension direction of the lubrication groove is perpendicular to the extension direction of the rotating shaft.

3. The paper pressing and guiding mechanism as described in claim 1, characterized in that, The cross-section of the lubrication groove is rectangular or elliptical.

4. The paper pressing and guiding mechanism as described in claim 1, characterized in that, The second end of the rotating pressure plate is provided with at least one damping wheel, and the surface of the damping wheel is provided with an anti-slip structure.

5. The paper pressing and guiding mechanism as described in claim 4, characterized in that, The paper pressing guide mechanism also includes a feeding roller, which is correspondingly arranged with the damping roller; when the cam protrusion presses against the lubrication groove of the rotating friction part, the feeding roller and the damping roller are pressed together; when the back of the cam corresponds to the rotating friction part, a feeding gap is formed between the feeding roller and the damping roller.

6. The paper pressing and guiding mechanism as described in claim 4, characterized in that, The second end of the rotating pressure plate is provided with two damping rollers, which are arranged in a straight line, and the extending direction of the damping rollers is parallel to the extending direction of the rotating shaft.

7. The paper pressing and guiding mechanism as described in claim 1, characterized in that, The paper pressing and guiding mechanism also includes a rotating support base, on both sides of the upper surface of the rotating support base, and the two ends of the rotating shaft are rotatably disposed in the rotating rings.

8. The paper pressing and guiding mechanism as described in claim 7, characterized in that, When the cam protrusion presses against the lubrication groove of the rotating friction part, the angle between the plane of the rotating support and the plane of the rotating pressure plate is less than or equal to 30°.

9. The paper pressing and guiding mechanism as described in claim 1, characterized in that, The extension direction of the rotating friction part is perpendicular to the plane where the rotating pressure plate is located, and the end of the rotating friction part is provided with the lubrication groove, the depth direction of the lubrication groove is parallel to the extension direction of the rotating friction part.

10. A printing device, characterized in that, Includes the paper pressing and guiding mechanism as described in any one of claims 1 to 9.

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