Paper feeding structure of printer

Abstract

The utility model provides a printer paper feeding structure, which relates to the technical field of printers, and comprises a first mounting rod assembly, the first mounting rod assembly is provided with a positioning mounting structure, and the positioning mounting structure comprises a moving sleeve, a mounting disc, an insertion sleeve, a pickup roller, a butt joint groove and a positioning insertion rod. The moving sleeve is slidably mounted on the outer side of one end of the first mounting rod assembly, the mounting disc is mounted at one end of the moving sleeve, the insertion sleeves are symmetrically mounted on one side of the mounting disc, the butt joint grooves are formed in the two sides of the pickup roller, the butt joint grooves are in friction insertion connection with the insertion sleeves, and the pickup roller is mounted on one side of the mounting disc through the butt joint grooves. A positioning insertion rod is installed in the butt joint groove and located in the insertion sleeve. According to the utility model, when the pickup roller needs to be detached and replaced, the movable sleeve only needs to be pulled towards the two ends from the outer side of the mounting rod body, so that the insertion sleeve is pulled out of the butt joint groove, and the positioning mounting structure can be separated from the pickup roller.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, specifically to a printer paper feeding structure. Background Technology

[0002] A printer mainly consists of a sending part, a receiving part, and a punching part. Types include laser printers, inkjet printers, and impact printers. It is mainly used to print computer-processed results onto relevant media. The printer is equipped with a paper feeding structure, which allows the paper to enter the printer.

[0003] Chinese Patent Publication No. CN215557469U discloses a printer paper feed roller with a cleaning function, including a housing. A paper tray is installed at the bottom of the housing. A first rotating shaft, a second rotating shaft, and a third rotating shaft are respectively installed on the left and right side walls of the housing. The first rotating shaft, the third rotating shaft, and the second rotating shaft are arranged from top to bottom. The third rotating shaft is located in front of the first rotating shaft and the second rotating shaft. A first gear and a second gear are respectively fitted on the outer surfaces of the left and right sides of the first rotating shaft and the second rotating shaft. The structure is simple and easy to understand. During the rotation of the paper feed roller, its outer surface contacts the cleaning brush, which removes dust and impurities from the surface of the paper feed roller. In addition, when the fan is working, it will cause airflow to flow into the rectangular frame. Therefore, under the action of airflow, the dust and impurities brushed off by the cleaning brush will enter the mounting frame through the dust inlet, and then enter the dust collection box through the rectangular frame. The dust collection box is snapped into the rear end of the rectangular frame for easy cleaning and collection.

[0004] The publicly disclosed patent documents show that the printer paper feed roller with cleaning function can remove dust and impurities from the outside of the paper feed roller by installing a cleaning brush and collect them uniformly by airflow, which is convenient for cleaning the paper feed roller. However, after long-term use, the surface friction of the paper feed roller will be insufficient, and the paper feed roller needs to be replaced. However, there is a lack of components that facilitate the disassembly and replacement of the paper feed roller, resulting in low paper feed roller replacement efficiency.

[0005] Therefore, a new paper feeding structure for printers is being developed to address the aforementioned issues. Utility Model Content

[0006] The purpose of this invention is to provide a paper feeding structure for a printer, in order to solve the technical problem mentioned in the background art that after long-term use, the surface friction of the paper feed rollers will be insufficient, requiring replacement of the paper feed rollers. However, there is a lack of components that facilitate the disassembly and replacement of the paper feed rollers, resulting in low replacement efficiency of the paper feed rollers.

[0007] The technical solution of this utility model is implemented as follows: A printer paper feeding structure includes a first mounting rod assembly, on which a positioning mounting structure is mounted. The positioning mounting structure includes a movable sleeve, a mounting plate, an insertion sleeve, a paper feed roller, a docking groove, and a positioning rod. The movable sleeve is slidably mounted on the outer side of one end of the first mounting rod assembly. A mounting plate is mounted on one end of the movable sleeve. Insertion sleeves are symmetrically mounted on one side of the mounting plate. The docking groove is formed on both sides of the paper feed roller, and the docking groove is frictionally inserted into the insertion sleeve. The paper feed roller is mounted on one side of the mounting plate through the docking groove. A positioning rod is installed inside the docking groove, and the positioning rod is located inside the insertion sleeve.

[0008] Preferably, the first mounting rod assembly includes a mounting rod body, a limiting slide groove, a mounting groove, and a connecting spring. The mounting rod body is located inside the movable sleeve. The outer side of the mounting rod body is symmetrically provided with limiting slide grooves. The inner wall of one side of the limiting slide groove is symmetrically provided with mounting grooves. The connecting spring is installed inside the mounting groove.

[0009] Preferably, the inner wall of the movable sleeve is symmetrically equipped with sliding limit blocks that fit into the limiting groove, and a connecting rod is symmetrically installed on one side of the sliding limit block. One end of the connecting rod is located inside the mounting groove and connected to the connecting spring.

[0010] Preferably, a paper-feeding surface is installed on the outer side of the paper-feeding roller.

[0011] Preferably, a mounting shaft is mounted on the other end of the mounting rod body, and a gear is mounted on one end of the mounting shaft.

[0012] Preferably, a second mounting rod assembly is installed at the other end of the paper feed roller. The second mounting rod assembly is the same as the first mounting rod assembly, and a positioning mounting structure is also installed on the outer side of the second mounting rod assembly.

[0013] The present invention has the following advantages due to the adoption of the above technical solution:

[0014] 1. In this utility model, when the paper feed roller is installed, the connecting spring provides a clamping force to the movable sleeve, causing the movable sleeve to drive the mounting plate to clamp both ends of the paper feed roller. The insertion sleeve installed on the mounting plate is inserted into the docking groove by the operator, thereby installing and using the paper feed roller. When the paper feed roller needs to be disassembled and replaced, the operator only needs to pull the movable sleeve on the outside of the mounting rod body towards both ends, so that the insertion sleeve is pulled out from the docking groove, thereby separating the positioning and mounting structure from the paper feed roller, making it easy to disassemble and replace the paper feed roller.

[0015] 2. In order to ensure the stability of the paper feed roller installation in this utility model, when the insertion sleeve is aligned and inserted into the docking groove by the operator, the positioning rod in the docking groove is inserted into the inside of the insertion sleeve, thereby playing a bidirectional insertion connection role, making the insertion sleeve in the docking groove have greater friction and making the connection more stable.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a schematic diagram of the movable sleeve structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connecting spring structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the paper feed roller structure of this utility model.

[0022] Reference numerals in the attached drawings: 1. First mounting rod assembly; 2. Second mounting rod assembly; 3. Mounting rod body; 4. Mounting shaft; 5. Gear; 6. Moving sleeve; 7. Sliding limit block; 8. Connecting rod; 9. Mounting disc; 10. Insertion sleeve; 11. Limiting slide groove; 12. Mounting groove; 13. Connecting spring; 14. Paper feed roller; 15. Paper feed surface; 16. Docking groove; 17. Positioning insert rod. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1-4The present invention provides a paper feeding structure for a printer.

[0026] The assembly includes a first mounting rod assembly 1 and a positioning mounting structure. The positioning mounting structure is mounted on the first mounting rod assembly 1. The positioning mounting structure includes a movable sleeve 6, a mounting plate 9, an insertion sleeve 10, a paper feed roller 14, a docking groove 16, and a positioning insert 17. The movable sleeve 6 is slidably mounted on the outer side of one end of the first mounting rod assembly 1. The mounting plate 9 is mounted on one end of the movable sleeve 6. The insertion sleeve 10 is symmetrically mounted on one side of the mounting plate 9. The docking groove 16 is formed on both sides of the paper feed roller 14, and the docking groove 16 is frictionally inserted into the insertion sleeve 10 for paper feed roller insertion. Paper roller 14 is installed on one side of mounting plate 9 through docking groove 16. Positioning rod 17 is installed inside docking groove 16 and is located inside insertion sleeve 10. First mounting rod assembly 1 includes mounting rod body 3, limiting slide groove 11, mounting groove 12 and connecting spring 13. Mounting rod body 3 is located inside movable sleeve 6. Limiting slide groove 11 is symmetrically opened on the outer side of mounting rod body 3. Mounting groove 12 is symmetrically opened on one inner wall of limiting slide groove 11. Connecting spring 13 is installed inside mounting groove 12.

[0027] The paper feed roller 14 is fixed between its two ends by a positioning and mounting structure on the first mounting rod assembly 1 and the second mounting rod assembly 2. The movable sleeve 6 in the positioning and mounting structure can slide on the outside of the mounting rod body 3. To ensure that the mounting rod body 3 does not rotate, a sliding limit block 7 is connected to the limit groove 11, so that the movable sleeve 6 can only slide and cannot rotate. At the same time, the sliding limit block 7 is inserted into the mounting groove 12 through the connecting rod 8 and connected to the connecting spring 13, so that the movable sleeve 6 is limited by the connecting spring 13. When the paper feed roller 14 is installed, the connecting spring 13 provides a clamping force for the movable sleeve 6 to hold the paper feed roller 14. The force causes the movable sleeve 6 to drive the mounting plate 9 to clamp both ends of the paper feed roller 14. The insertion sleeve 10 installed on the mounting plate 9 is inserted into the docking groove 16 by the operator, and the positioning rod 17 in the docking groove 16 is inserted into the inside of the insertion sleeve 10, thereby playing a bidirectional insertion connection role. This makes the friction of the insertion sleeve 10 in the docking groove 16 greater, making the connection more stable. When it is necessary to disassemble and replace the paper feed roller 14, the operator only needs to pull the movable sleeve 6 to both ends on the outside of the mounting rod body 3, so that the insertion sleeve 10 is pulled out from the docking groove 16, thereby separating the positioning mounting structure from the paper feed roller 14, making the paper feed roller 14 easy to disassemble and replace.

[0028] like Figure 1 , Figure 2 and Figure 4 The present invention provides a paper feeding structure for a printer.

[0029] The system includes a gear 5 and a second mounting rod assembly 2. A sliding limit block 7, which engages with a limit groove 11, is symmetrically mounted on the inner wall of the movable sleeve 6. A connecting rod 8 is symmetrically mounted on one side of the sliding limit block 7. One end of the connecting rod 8 is located inside the mounting groove 12 and connected to a connecting spring 13. A paper feeding surface 15 is mounted on the outer side of the paper feeding roller 14. An mounting shaft 4 is mounted on the other end of the mounting rod body 3. A gear 5 is mounted on one end of the mounting shaft 4. The second mounting rod assembly 2 is mounted on the other end of the paper feeding roller 14. The second mounting rod assembly 2 is the same as the first mounting rod assembly 1, and a positioning mounting structure is also mounted on the outer side of the second mounting rod assembly 2.

[0030] The movable sleeve 6 is connected to the limiting groove 11 via the sliding limit block 7. When the mounting rod body 3 rotates, the movable sleeve 6 will also rotate, causing the paper feeding wheel 14 at one end to rotate. The paper feeding is performed through the paper feeding surface 15 on the outer side of the paper feeding wheel 14. The mounting shaft 4 is used to install the second mounting rod assembly 2 and the first mounting rod assembly 1. The gear 5 is used to control the rotation of the paper feeding structure. The limiting part of the electromagnetic clutch is inserted into the teeth of the gear 5, preventing the gear 5 from rotating, thereby stopping the paper feeding structure and completing the paper feeding action.

[0031] When this utility model is in operation: First, the paper feeding structure is installed in the printer. When feeding paper, the paper feeding structure drives the mounting rod body 3 to rotate through the drive mechanism, thereby causing the paper feed roller 14 to rotate and convey the paper. If the paper feed roller 14 needs to be replaced, the operator pulls the movable sleeve 6, which is elastically slidably installed on the outside of the second mounting rod assembly 2 and the first mounting rod assembly 1, to both ends, thereby separating it from the paper feed roller 14 and removing the paper feed roller 14 from the paper feeding structure.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A paper feeding structure for a printer, characterized in that: The first mounting rod assembly (1) is equipped with a positioning mounting structure, which includes a movable sleeve (6), a mounting plate (9), an insertion sleeve (10), a paper feed roller (14), a docking groove (16), and a positioning rod (17). The movable sleeve (6) is slidably mounted on the outer side of one end of the first mounting rod assembly (1). The mounting plate (9) is mounted on one end of the movable sleeve (6). The insertion sleeve (10) is symmetrically mounted on one side of the mounting plate (9). The docking groove (16) is opened on both sides of the paper feed roller (14), and the docking groove (16) is frictionally inserted into the insertion sleeve (10). The paper feed roller (14) is mounted on one side of the mounting plate (9) through the docking groove (16). The positioning rod (17) is installed inside the docking groove (16), and the positioning rod (17) is located inside the insertion sleeve (10).

2. The printer paper feeding structure according to claim 1, characterized in that: The first mounting rod assembly (1) includes a mounting rod body (3), a limiting slide groove (11), a mounting groove (12), and a connecting spring (13). The mounting rod body (3) is located inside the movable sleeve (6). A limiting slide groove (11) is symmetrically opened on the outer side of the mounting rod body (3). A mounting groove (12) is symmetrically opened on one side inner wall of the limiting slide groove (11). A connecting spring (13) is installed inside the mounting groove (12).

3. The printer paper feeding structure according to claim 2, characterized in that: The inner wall of the movable sleeve (6) is symmetrically equipped with sliding limit blocks (7) that fit into the limit groove (11). A connecting rod (8) is symmetrically installed on one side of the sliding limit block (7). One end of the connecting rod (8) is located inside the mounting groove (12) and connected to the connecting spring (13).

4. The printer paper feeding structure according to claim 1, characterized in that: The paper feed roller (14) has a paper feed surface (15) installed on its outer side.

5. The printer paper feeding structure according to claim 2, characterized in that: The other end of the mounting rod body (3) is fitted with a mounting shaft (4), and a gear (5) is fitted with one end of the mounting shaft (4).

6. The printer paper feeding structure according to claim 1, characterized in that: The other end of the paper feed roller (14) is equipped with a second mounting rod assembly (2), which is the same as the first mounting rod assembly (1), and a positioning mounting structure is also installed on the outside of the second mounting rod assembly (2).

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