Adjusting structure of paper winding wheel disc of error printer

Abstract

The utility model discloses an adjusting structure of a paper winding wheel disc of an error printer. The adjusting structure comprises a shell; the paper winding wheel disc is detachably connected to the shell; the paper winding wheel disc comprises a first baffle, a base and a shaft rod fixedly connected to the base, a plurality of limiting bosses are arranged on the shaft rod, a limiting groove is formed between every two adjacent limiting bosses, the limiting grooves are arranged at intervals, the first baffle is detachably connected to the shaft rod in a left-right sliding mode, and the second baffle is detachably connected to the shaft rod in a left-right sliding mode. The clamping distance between the first baffle and the base can be adjusted by pushing the first baffle leftwards or rightwards, and when the first baffle is clamped into any limiting groove, the first baffle is in a locked state. By means of the adjustable first baffle and the adjustable second baffle, accurate locking is achieved through the limiting groove and the elastic arm, and it is ensured that the paper winding wheel disc can adapt to paper of different sizes or types. And meanwhile, the modular structure is beneficial to disassembly and maintenance, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of error correction printer technology, and more specifically, to an adjustment structure for the paper roll disc of an error correction printer. Background Technology

[0002] A mistake printer is a learning aid used in the education field. It scans, identifies, and prints out questions students answered incorrectly, helping them to review and reinforce key knowledge points in a targeted manner. The core function of this type of device is to efficiently process and output incorrect answers; therefore, it requires a high degree of accuracy and stability in its internal structure.

[0003] In error correction printers, the paper roll is a crucial component responsible for carrying and transporting the printing paper. Since different users may use different sizes or types of paper (such as error correction paper, exercise book paper, etc.), the paper roll needs to be adjustable to accommodate different paper widths and thicknesses. Furthermore, during the printing process, the stability of the paper roll directly affects print quality and the reliability of the equipment. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide an adjustment structure for the roll paper wheel of a mistake printer, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: including:

[0006] case;

[0007] A paper roll reel, which is detachably connected to the housing;

[0008] The paper roll reel includes a first baffle, a base, and a shaft fixedly connected to the base. The shaft is provided with a plurality of limiting protrusions, and a limiting groove is formed between every two adjacent limiting protrusions. The limiting grooves are spaced apart by a certain distance. The first baffle is detachable and can be slidably connected to the shaft. Pushing the first baffle to the left or right can adjust the clamping distance between the first baffle and the base. When the first baffle is engaged in any limiting groove, it is in the locked state.

[0009] In a preferred embodiment, the housing has an installation cavity of a certain depth, and the paper roll reel is detachably disposed within the installation cavity.

[0010] In a preferred embodiment, positioning grooves are vertically provided on both opposite side walls of the mounting cavity, and the positioning grooves are rectangular grooves.

[0011] In a preferred embodiment, the paper roll reel further includes a second baffle, which is detachably and slidably connected to the shaft through the shaft.

[0012] In a preferred embodiment, the base is provided with a storage groove, the upper and lower ends of which vertically penetrate the base.

[0013] In a preferred embodiment, the second baffle is adapted to the storage slot, and the storage slot extends from opposite ends of the second baffle in an arc shape. When the second baffle is located in the storage slot, it is the initial storage state of the second baffle.

[0014] In a preferred embodiment, the first baffle has a shaft hole at its center, and the inner wall of the shaft hole has a positioning opening.

[0015] In a preferred embodiment, the first baffle is provided with an elastic arm that extends into the shaft hole. When the first baffle is in a locked state, the front end of the elastic arm is engaged in the limiting groove to form a limiting lock on the first baffle.

[0016] In a preferred embodiment, the shaft is provided with a positioning slide, and the positioning slide is provided in a one-to-one correspondence with the positioning opening.

[0017] In a preferred embodiment, the first baffle and the second baffle have the same structure.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] This invention utilizes adjustable first and second baffles, along with limiting grooves and elastic arms, to achieve precise locking, ensuring that the paper roll can adapt to different sizes or types of paper. Simultaneously, the modular structure facilitates disassembly and maintenance, enhancing the user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the separated state of the paper roll reel and the housing in this utility model.

[0021] Figure 2 This is a schematic diagram of the base structure in this utility model.

[0022] Figure 3 This is a schematic diagram of the combined structure of the paper roll reel and the housing in this utility model.

[0023] Figure 4 This is a schematic diagram of the paper winding reel in this utility model.

[0024] Figure 5 This is an exploded view of the paper roll reel structure in this utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the first baffle in this utility model.

[0026] Figure 7 This is a schematic diagram of the structure of the second baffle in this utility model. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] As attached Figure 1 - Appendix Figure 7 The paper roll roller of a test paper printer shown includes: a housing 1; a paper roll roller 2, which is detachably connected to the housing 1 and is used to install test paper rolls; the paper roll roller 2 includes a first baffle 21, a base 22, and a shaft 23 fixedly connected to the base 22. The shaft 23 is provided with a plurality of limiting bosses 231, which are non-closed annular structures or multi-segment non-closed annular structures. A limiting groove 232 is formed between every two adjacent limiting bosses 231, and each limiting groove 232 is spaced apart. The first baffle 21 is detachably and can slide left and right on the shaft 23. Pushing the first baffle 21 to the left or right can adjust the clamping distance between the first baffle 21 and the base 22. When the first baffle 21 is engaged in any limiting groove 232, the first baffle 21 is in a locked state.

[0029] Thus, if the spacing between each limiting groove 232 is set to 0.5CM, pushing the first baffle 21 to the left or right will cause the first baffle 21 to engage with the adjacent limiting groove 232, thereby increasing or decreasing the clamping distance between the first baffle 21 and the base 22 by 0.5CM. If the spacing between each limiting groove 232 is set to 1CM, then the clamping distance between the first baffle 21 and the base 22 will increase or decrease by 1CM, and so on. The spacing between each limiting groove 232 can be set to the same distance and / or different distances. Through the setting of the limiting groove 232, the clamping distance can be easily and precisely adjusted, and it can be reliably locked in any position.

[0030] In some embodiments, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 4As shown, the housing 1 has an installation cavity 11 of a certain depth. The paper roll 2 is detachably installed in the installation cavity 11. Positioning grooves 12 are vertically provided on the opposite side walls of the installation cavity 11. The positioning grooves 12 are rectangular grooves. There are two positioning grooves 12. The left and right ends of the shaft 23 extend horizontally to form limiting platforms 20. The limiting platforms 20 are rectangular structures. The limiting platforms 20 and the positioning grooves 12 are arranged one-to-one and are compatible with each other. The installation cavity 11 and the positioning grooves 12 on the housing 1 provide a precise positioning reference for the installation of the paper roll 2, ensuring its stable position in the housing 1.

[0031] In some embodiments, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 4 As shown, the paper roll reel 2 also includes a second baffle 24. The second baffle 24 is detachably and slidably connected to the shaft 23 through the shaft 23. A storage groove 221 is provided on the base 22. The upper and lower ends of the storage groove 221 vertically penetrate the base 22. The second baffle 24 is adapted to the storage groove 221. The opposite ends of the second baffle 24 extend out of the storage groove 221 and are arc-shaped to facilitate the left and right movement of the second baffle 24. When the second baffle 24 is located in the storage groove 221, it is in its initial storage state. A limiting boss 231 is provided on the shaft 23 near one end of the storage groove 221. When the elastic arm 212 on the second baffle 24 passes through the limiting boss 231, the second baffle 24 is locked in place by the cooperation of the elastic arm 212 and the limiting boss 231. A shaft hole 210 is provided at the center of the first baffle 21, and a fixed... The first baffle 21 has two elastic arms 212, which are arranged opposite each other and extend into the shaft hole 210. When the first baffle 21 is locked, the front end of the elastic arm 212 is engaged in the limiting groove 232, thus limiting and locking the first baffle 21. The shaft 23 has a positioning slide 233, which is arranged one-to-one with the positioning opening 211. The first baffle 21 and the second baffle 24 have the same structure. In this embodiment, there are two sets of positioning openings 211 and positioning slides 233, which are arranged correspondingly. The positioning openings 211 are located at the upper and lower ends opposite each other on the inner wall of the shaft hole 210. The positioning slides 233 extend from the left end to the right end of the shaft 23 to prevent the first baffle 21 and the second baffle 24 from shaking or rotating when sliding left and right.

[0032] Working principle:

[0033] This utility model includes a housing 1 and a paper roll 2. The paper roll 2 includes a first baffle 21, a base 22, and a shaft 23 fixedly connected to the base 22. The shaft 23 has a certain width. The first baffle 21 is installed on the shaft 23 at one end of the base 22. When it is necessary to install the roll of paper for printing incorrect questions, the paper roll 2 can be held and pulled upwards until the paper roll 2 is disengaged from the mounting cavity 11 on the housing 1. After removing the paper roll 2, the user removes the first baffle 21 to the left or right, passes the roll of paper for printing incorrect questions through the shaft 23, and then aligns the shaft hole 210 on the first baffle 21 with the shaft 23, aligns the positioning groove 12 on the shaft hole 210 with the positioning slide 233, and pushes the first baffle. 21 is inserted into the limiting groove 232 at a suitable distance, thereby forming a clamping limit on the left and right sides of the error-printing roll paper installed on the roll paper wheel 2, so as to prevent the error-printing roll paper from shaking left and right when rotating, which would affect the printing effect. If the user needs to center the error-printing roll paper, the second baffle 24 can also be pushed and adjusted to be in the appropriate limiting groove 232. When the first baffle 21 and the second baffle 24 move left and right, due to the extension of the elastic arm 212 into the shaft hole 210 and the setting of the limiting boss 231, when the elastic arm 212 contacts the limiting boss 231, the elastic arm 212 bends and deforms to the left or right. When the elastic arm 212 is inserted into the limiting groove 232, the elastic arm 212 returns to its original position.

[0034] In summary, this invention achieves precise locking through adjustable first baffle 21 and second baffle 24, using limiting groove 232 and elastic arm 212, ensuring that the paper roll 2 can adapt to different sizes or types of paper. At the same time, the modular structure facilitates disassembly and maintenance, improving the user experience.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0037] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustment structure of a paper wheel of a mistake problem printer, characterized by, include: Housing (1); Paper roll wheel (2), the paper roll wheel (2) is detachably connected to the housing (1); the paper roll wheel (2) includes a first baffle (21), a base (22) and a shaft (23) fixedly connected to the base (22). The shaft (23) is provided with a plurality of limiting bosses (231), and a limiting groove (232) is formed between every two adjacent limiting bosses (231), and each limiting groove (232) is spaced apart by a set distance. The first baffle (21) is detachable and can slide left and right on the shaft (23). Pushing the first baffle (21) to the left or right can adjust the clamping distance between the first baffle (21) and the base (22). When the first baffle (21) is inserted into any limiting groove (232), it is in the locked state of the first baffle (21).

2. The adjusting structure of the paper wheel disc of the mistake question printer according to claim 1, characterized in that: The housing (1) has an installation cavity (11) of a certain depth, and the paper roll disc (2) is detachably installed in the installation cavity (11).

3. The adjusting structure of the paper wheel disc of the mistake question printer according to claim 2, characterized in that: The mounting cavity (11) has vertically arranged positioning grooves (12) on both opposite side walls, and the positioning grooves (12) are rectangular grooves.

4. The adjusting structure of the paper wheel disc of the mistake question printer according to claim 1, characterized in that: The paper roll reel (2) also includes a second baffle (24), which is detachably and slidably connected to the shaft (23) through the shaft (23).

5. The adjusting structure of the paper wheel disc of the mistake question printer according to claim 4, characterized in that: The base (22) is provided with a storage groove (221), and the upper and lower ends of the storage groove (221) penetrate the base (22) vertically.

6. The adjusting structure of the paper wheel disc of the mistake question printer according to claim 5, characterized in that: The second baffle (24) is adapted to the storage groove (221). The storage groove (221) extends from the opposite ends of the second baffle (24) and is arc-shaped. When the second baffle (24) is in the storage groove (221), it is the initial storage state of the second baffle (24).

7. The adjusting structure of the paper roller wheel disc of the mistake question printer according to claim 1, characterized in that: The first baffle (21) has a shaft hole (210) at its center, and a positioning opening (211) is provided on the inner wall of the shaft hole (210).

8. The adjusting structure of the paper wheel disc of the mistake question printer according to claim 7, characterized in that: The first baffle (21) is provided with an elastic arm (212), which extends into the shaft hole (210). When the first baffle (21) is in a locked state, the front end of the elastic arm (212) is inserted into the limiting groove (232) to form a limiting lock on the first baffle (21).

9. The adjusting structure of the paper wheel of the mistake-printing printer according to claim 8, characterized in that: The shaft (23) is provided with a positioning slide (233), and the positioning slide (233) is provided in a one-to-one correspondence with the positioning opening (211).

10. The adjusting structure of the paper wheel disc of the misprint printer according to any one of claims 1-9, characterized in that: The first baffle (21) and the second baffle (24) have the same structure.

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