Printer paper roll automatic limiting device
By designing an automatic adjustment limiting device, the problem of poor versatility of existing printer limiting parts is solved, automatic installation and rapid replacement of paper rolls of different specifications is realized, operation process is simplified, and the adaptability and convenience of the printer are improved. .
Patent Information
- Application Number
- CN202421028649.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The limit parts of existing printers are poor in versatility and cannot automatically adapt to paper roll installation of different specifications, resulting in troublesome replacement operations and a large number of customized parts, affecting the rapid replacement and storage of paper rolls.
An automatic limiting device for printer paper rolls including a base, a pitch adjustment mechanism and a roller is designed. Through the combination of pitch adjustment rack, pitch adjustment gear, tension spring and limit plate, it can automatically adjust and fix paper rolls of different specifications. simplifies the installation process.
It automatically adapts to the installation of paper rolls of different specifications, and is simple and fast in operation, reducing the need to replace accessories, and improving the adaptability and convenience of the printer.
Smart Images
Figure CN222271642U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printing equipment, in particular to an automatic limiting device for a paper roll of a printer. Background Art
[0002] Thermal printers have become one of the indispensable tools and equipment in the daily work of many companies and individuals, and paper rolls are necessary consumables to ensure the normal operation of thermal printers. Paper rolls are usually fixed inside the printer and need to be limited to a specific position to prevent the paper from deviating during printing, thereby ensuring print quality.
[0003] In the prior art, many printers can choose to install a variety of paper rolls of different specifications to meet people's personalized needs for printing width, but this type of printer usually uses limiters to fix the paper rolls, and the versatility of these limiters is poor, that is, after a set of limiters are installed, it can only be used to fix a certain specification of paper rolls (paper rolls of different specifications have different widths). When it is necessary to use paper rolls of other specifications for printing, it is necessary to remove the current limiters and then install other limiters; the replacement operation is more troublesome, which is not conducive to the rapid replacement of paper rolls, and the more paper roll specifications the printer needs to adapt to, the more limiters need to be customized. It is troublesome to find more limiters, and they are easy to lose if they are not stored properly. In view of this, the present application aims to provide a new limiter device for installing printer paper rolls, which can automatically adapt to the installation of paper rolls of different specifications. Utility Model Content
[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a printer paper roll automatic limiting device, which can automatically adapt to the installation of paper rolls of different specifications and is easy to install and use.
[0005] The technical scheme of the utility model is: an automatic paper roll limiting device for a printer, comprising a base, a containing cavity is arranged on the base, and the containing cavity is used to place the paper roll; a distance adjustment mechanism is arranged on the base, and the distance adjustment mechanism comprises a distance adjustment rack, a distance adjustment gear, a tension spring and a limit plate, and there are two distance adjustment racks, and the two distance adjustment racks are meshed with the same distance adjustment gear so that the two distance adjustment racks can only move at the same time and in opposite directions; a limit plate is installed on each distance adjustment rack, and the limit plate is located in the containing cavity, and one end of the limit plate passes through the side wall of the containing cavity and is fixedly connected with the distance adjustment rack, and the tension spring is connected with the distance adjustment rack, and the tension spring is used to make the distance adjustment racks move toward each other, thereby driving the limit plates to approach each other.
[0006] Furthermore, the plane of the limiting plate remains perpendicular to the movement direction of the pitch adjusting rack.
[0007] Furthermore, a distance adjusting handle is provided on the distance adjusting rack, and the distance adjusting handle is controlled to adjust the position of the distance adjusting rack. Part of the distance adjusting handle is exposed from the upper surface of the base, so as to facilitate user operation.
[0008] Furthermore, the pitch-adjusting handle, the pitch-adjusting rack, and the pitch-adjusting gear are all arranged on the front side wall of the base, and the movement direction of the pitch-adjusting rack remains parallel to the front side wall, that is, parallel to the length direction of the accommodating cavity.
[0009] Furthermore, the pitch adjusting gear is rotatably mounted on the front side wall of the base. The installation position of the pitch adjusting gear determines the positioning center of the consumables, which needs to be determined according to the actual position of the print head of the printer. Generally, the pitch adjusting gear is arranged at a position corresponding to the center plane of the accommodating cavity.
[0010] Furthermore, the pitch adjustment mechanism also includes a pitch adjustment cover plate, which is used to cover parts such as the pitch adjustment rack and the pitch adjustment gear, and can limit the pitch adjustment handle and the pitch adjustment rack, and also has a protective and aesthetic function.
[0011] Furthermore, the bottom surface of the accommodating cavity is a curved surface.
[0012] Furthermore, a roller is provided at the bottom of the accommodating cavity. The roller includes a central axis and a roller, and there are at least two rollers. The roller is used to facilitate the sliding of the paper roll to reduce the resistance when the paper roll rolls.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the automatic position limit of the paper roll in the utility model can be applied to the position limit installation of paper rolls (consumables) of different specifications, and does not need to be realized by replacing related accessories, and the operation is fast and simple. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is an explosion diagram of Example 1 of the utility model;
[0015] Figure 2 It is a three-dimensional schematic diagram of embodiment 1 of the utility model;
[0016] Figure 3 This is a schematic diagram of the first embodiment of the utility model after omitting the base and the distance-adjusting cover plate;
[0017] In the figure: 1-base, 2-adjustable cover plate, 3-adjustable handle, 4-adjustable rack, 5-adjustable gear, 6-limiting plate, 7-tension spring, 8-roller. DETAILED DESCRIPTION
[0018] The present invention will be further described in detail below in conjunction with specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art. Unless otherwise defined, all technical terms and scientific terms used in this document have the same meanings as those generally understood by technicians in this technical field.
[0019] Example 1
[0020] like Figure 1 As shown, an automatic paper roll limiting device for a printer comprises a base 1, on which a containing cavity is provided, and the containing cavity is used to place a paper roll; a distance adjusting mechanism is provided on the base 1, and the distance adjusting mechanism comprises a distance adjusting rack 4, a distance adjusting gear 5, a tension spring 7 and a limit plate 6, and the distance adjusting rack 4 has two, and the two distance adjusting racks 4 are meshed with the same distance adjusting gear 5, so that the two distance adjusting racks 4 can only move at the same time, and the moving directions are opposite; a limit plate 6 is installed on each distance adjusting rack 4, and the limit plate 6 is located in the containing cavity, and one end of the limit plate 6 passes through the side wall of the containing cavity and is fixedly connected to the distance adjusting rack 4, and the tension spring 7 is connected to the distance adjusting rack 4, and the tension spring 7 is used to make the distance adjusting rack 4 move toward each other, thereby driving the limit plates 6 to approach each other.
[0021] In this embodiment, the plane of the limit plate 6 is kept perpendicular to the movement direction of the pitch adjusting rack 4; a pitch adjusting handle 3 is provided on the pitch adjusting rack 4, and the end of the pitch adjusting handle 3 is exposed from the upper surface of the base 1, so that the user can operate the end of the movable pitch adjusting handle 3 to adjust the position of the pitch adjusting rack 4.
[0022] In this embodiment, the pitch adjustment handle 3, the pitch adjustment rack 4, and the pitch adjustment gear 5 are all arranged on the front side wall of the base 1, and the pitch adjustment gear 5 corresponds to the center plane of the accommodating cavity. The movement direction of the pitch adjustment rack 4 is parallel to the front side wall, that is, parallel to the length direction of the accommodating cavity.
[0023] In this embodiment, the pitch adjustment mechanism also includes a pitch adjustment cover plate 2, which is used to cover parts such as the pitch adjustment rack 4 and the pitch adjustment gear 5. It can limit the pitch adjustment handle 3 and the pitch adjustment rack 4, and also has a protective and aesthetic effect.
[0024] In this embodiment, the bottom surface of the accommodating cavity is an arc surface, and a roller 8 is arranged on the bottom of the accommodating cavity, the roller 8 includes a central axis and a roller, and there are at least two rollers 8. The roller 8 is used to make the paper roll slide easily to reduce the resistance when the paper roll rolls.
[0025] The working process of this embodiment is as follows: when the automatic limit device is in the natural state, the two limit plates 6 and the distance adjustment handle 3 are in a retracted state close to each other. When the paper roll needs to be installed, any distance adjustment handle 3 can be pulled to both sides (the limit plate 6 can also be directly pulled). Under the action of the distance adjustment rack 4 and the distance adjustment gear 5, the two limit plates 6 will move to both sides synchronously. When the distance between the two limit plates 6 is sufficient to accommodate the paper roll, the paper roll is placed in the accommodating cavity and the distance adjustment handle 3 (or the limit plate 6) is released. At this time, under the elastic force of the tension spring 7, the two limit plates 6 will automatically shrink and fit together, thereby limiting the paper roll in the accommodating cavity.
[0026] The above are only some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have combinations and modifications of the aforementioned technical features. Without departing from the spirit and scope of the present invention, those skilled in the art may improve, modify, or replace the present invention with equivalents, or apply the structure or method of the present invention to other fields to achieve the same effect, which all fall within the scope of protection of the present invention.
Claims
1. An automatic paper roll limiting device for a printer, comprising a base, a receiving cavity is provided on the base, and the receiving cavity is used to place the paper roll; characterized in that: A distance adjusting mechanism is arranged on the base, and the distance adjusting mechanism comprises a distance adjusting rack, a distance adjusting gear, a tension spring and a limit plate. There are two distance adjusting racks, and the two distance adjusting racks are meshed with the same distance adjusting gear so that the two distance adjusting racks can only move at the same time and in opposite directions; a limit plate is installed on each distance adjusting rack, and the limit plate is located in the accommodating cavity, and one end of the limit plate passes through the side wall of the accommodating cavity and is fixedly connected to the distance adjusting rack, and the tension spring is connected to the distance adjusting rack, and the tension spring is used to make the distance adjusting racks move toward each other, thereby driving the limit plates to approach each other.
2. The automatic paper roll limiting device for a printer according to claim 1, characterized in that: The plane of the limit plate is kept perpendicular to the movement direction of the spacing rack.
3. The automatic paper roll limiting device for a printer according to claim 1, characterized in that: The pitch-adjusting rack is provided with a pitch-adjusting handle, and the position of the pitch-adjusting rack is adjusted by controlling the pitch-adjusting handle.
4. The automatic paper roll limiting device for a printer according to claim 3, characterized in that: The distance adjusting handle is exposed from the upper surface of the base.
5. The automatic paper roll limiting device for a printer according to claim 3, characterized in that: The pitch adjusting handle, the pitch adjusting rack and the pitch adjusting gear are all arranged on the front side wall of the base, and the movement direction of the pitch adjusting rack is kept parallel to the front side wall.
6. The automatic paper roll limiting device for a printer according to claim 5, characterized in that: The pitch-adjusting gear corresponds to the central plane of the accommodating cavity.
7. The automatic paper roll limiting device for a printer according to claim 1, characterized in that: The distance adjustment mechanism also includes a distance adjustment cover plate.
8. The automatic paper roll limiting device for a printer according to any one of claims 1 to 7, characterized in that: The bottom surface of the accommodating cavity is an arc surface, and rollers are arranged on the bottom surface.
9. The automatic paper roll limiting device for a printer according to claim 8, characterized in that: The supporting roller comprises a central shaft and a roller.
10. The automatic paper roll limiting device for a printer according to claim 8, characterized in that: There are at least two supporting rollers.