A paper roll placement mechanism and a printer

Abstract

The utility model relates to the field of printer provides a paper roll placing mechanism and printer, paper roll placing mechanism includes first support and second support, is provided with first adjusting portion on first support, and first adjusting portion is provided with first fixed part, second support is provided with first assembly part, and second support is provided with second adjusting portion, and second adjusting portion is provided with second fixed part. Through the position between two supports, the telescopic length of adjusting portion is adapted to the paper roll of different diameters, simultaneously, still can pass through the design of two different specifications of convex in first fixed part, adapts the paper roll of different width, to realize the flexible compatibility to multiple specifications paper roll. Realized through one paper roll placing mechanism adapts the purpose of multiple specifications paper roll, greatly simplified the complexity of printer structure, reduced the production cost, improved the user's operation convenience simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of printers, specifically to a paper roll placement mechanism and a printer. Background Technology

[0002] The printer's feed section is a device used to drag paper from the paper tray into the printer's interior, print it onto the paper in a prescribed format, and print the computer-processed results onto the relevant media.

[0003] In the process of developing this utility model, the inventors discovered the following problems in the existing technology: Some traditional printers can only print on a single type of paper. Printers that can use multiple paper sizes require multiple paper trays, resulting in a larger printer size. The increased number of paper trays also increases operational complexity, easily leading to problems such as incorrect paper placement or difficulty finding the correct paper tray. Therefore, there is an urgent need for a paper roll placement mechanism that can flexibly adapt to different paper roll sizes to solve the problems of poor paper roll adaptability, complex structure, and inconvenient operation in existing printers. Utility Model Content

[0004] The purpose of this invention is to provide a paper roll placement mechanism and a printer, aiming to improve the problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a paper roll placement mechanism, comprising: A first support, having a first adjusting part that is axially adjustable, and a first fixing part on which one end of the paper roll is placed; and The second support has a first assembly part that is installed with a distance adjustable from the first support, a second adjustment part that is axially telescopically adjustable, and a second fixing part that is used to place the other end of the paper roll.

[0006] As a preferred structure of this utility model, it further includes a fixing seat for mounting the first bracket and the second bracket, and the fixing seat is provided with a locking part that cooperates with the adjusting part to adjust the distance.

[0007] As a preferred structure of this utility model, the locking part is a plurality of spaced first through holes, and the first assembly part is used to cooperate with the first through holes and lock the second bracket to the fixed seat with bolts or pins. Alternatively, the locking part may be a slide rail, and the first assembly part may be a cylinder, a hydraulic cylinder, or a linear motor.

[0008] As a preferred structure of this utility model, the first bracket is provided with a second assembly part that cooperates with the locking part to adjust the installation position. The second assembly part is a bolt and nut structure or a pin structure that cooperates with the first through hole for locking. Alternatively, the second assembly part may be a cylinder, a hydraulic cylinder, or a linear motor.

[0009] As a preferred structure of this utility model, the first bracket is provided with a plurality of third fixing parts spaced apart along the axial direction, one end of the first adjusting part is provided with a first locking member fixedly installed with the third fixing part, and the other end of the first adjusting part is provided with a first elastic member between it and the first bracket.

[0010] As a preferred structure of this utility model, the second bracket is provided with a plurality of fourth fixing parts spaced apart along the axial direction, and one end of the second adjusting part is provided with a second locking member that is fixedly installed with the fourth fixing parts.

[0011] As a preferred structure of this utility model, a second elastic element is provided between the other end of the second adjustment part and the second bracket.

[0012] As a preferred structure of this utility model, the first fixing part is detachably mounted on the first bracket, and a first protrusion for cooperating with the paper roll is provided on one side of the first fixing part, and a second protrusion for cooperating with the paper roll is provided on the opposite side of the first protrusion. The outline size of the first protrusion is larger than the outline size of the second protrusion.

[0013] As a preferred structure of this utility model, the second fixing part is a second through hole, or the second fixing part is configured with the same structure as the first fixing part.

[0014] This utility model also includes a printer, comprising the paper roll placement mechanism as described above.

[0015] By adopting the above technical solution, this utility model has the following advantages compared with the prior art: 1. This utility model effectively solves the problems of structural complexity and operational inconvenience caused by traditional printers that can only accommodate single-size paper rolls or require multiple paper feed trays. For example, the position between the two supports and the extension length of the adjusting part can be adjusted to accommodate paper rolls of different diameters; at the same time, by designing two different sizes of protrusions in the first fixing part, it can accommodate paper rolls of different widths, thereby achieving flexible compatibility with multiple paper roll sizes. It achieves the goal of accommodating multiple paper roll sizes through a single paper roll placement mechanism, greatly simplifying the complexity of the printer structure, reducing production costs, and improving user convenience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the paper roll placement mechanism described in this utility model; Figure 2 This is an exploded view of the paper roll placement mechanism described in this utility model; Figure 3 This is a cross-sectional view of the second fixing part of the paper roll placement mechanism of this utility model, which has a through hole design. Figure 4 This is a cross-sectional view of the second fixing part of the paper roll placement mechanism described in this utility model, which has the same structural scheme as the first fixing part; Figure 5 This is a schematic diagram of the structure of the first fixing part of the paper roll placement mechanism of this utility model; Figure 6 This is a schematic diagram of the first support of the paper roll placement mechanism of the present invention in one embodiment; Figure 7 This is a schematic diagram of the first support of the paper roll placement mechanism described in this utility model in another embodiment; Figure 8 This is a schematic diagram of the printer described in this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Printer; 10. First bracket; 11. First adjustment part; 12. Second assembly part; 13. Third fixing part; 14. Third through hole; 111. First fixing part; 112. First locking member; 113. First elastic member; 1111, First protrusion; 1112, Second protrusion; 20. Second bracket; 21. Second adjustment part; 22. First assembly part; 23. Fourth fixing part; 211. Second fixing part; 212. Second locking member; 213. Second elastic member; 2111, Second through hole; 221. Bolts; 30. Fixing base; 31. Locking part; 311. First through hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0021] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Example 1 Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a paper roll placement mechanism, including a first support 10 and a second support 20. The first support 10 is provided with a first adjustment part 11 that is adjustable along the axial direction, and the first adjustment part 11 is provided with a first fixing part 111 for placing one end of the paper roll. The second support 20 is provided with a first assembly part 22 that is installed with an adjustable distance from the first support 10, and the second support 20 is provided with a second adjustment part 21 that is adjustable along the axial direction, and the second adjustment part 21 is provided with a second fixing part 211 for placing the other end of the paper roll.

[0023] The first support 10 and the second support 20 of this disclosure can be two symmetrical or side-by-side support structures, or support arms on both sides of the paper feed table, forming a stable structure that can support or install both ends of the paper roll, thereby achieving stable support and quick clamping of the paper roll. Through the axial extension and retraction function of the first adjustment part 11 and the second adjustment part 21, the installation requirements of paper rolls of different widths can be adapted, improving the versatility of the equipment. Specifically, the support can be a cylindrical or polygonal column structure, with a groove on one side of the support having two or one end that is open for conduction, the groove for placing the adjustment part. The adjustment part can also be a cylindrical or polygonal column structure. For example, the first adjustment part 11 and the second adjustment part 21 can be axially extended and retracted using a threaded rod adjustment mechanism, a linear motor extension and retraction structure, or a pneumatic-hydraulic drive mechanism to complete the extension and retraction adjustment of the adjustment part; or, the position of the adjustment part can be fixed by locking with bolts, nuts, or pins at different axial positions of the support, achieving the purpose of adjustment.

[0024] Furthermore, the first adjustment unit 11 and the second adjustment unit 21 can be coordinated for adjustment, that is, to stretch or shrink along the axial direction of the support, thereby enabling quick adaptation and installation of paper rolls of different diameters; at the same time, it ensures that the paper roll remains axially aligned after installation, avoiding rotational imbalance or running vibration caused by eccentricity, and effectively improving the stability of equipment operation and the continuity of paper feeding.

[0025] In this disclosure, when installing the first bracket 10 and the second bracket 20, the first bracket 10 can be fixedly installed, such as by adhesive bonding, welding, locking, or snap-fit, forming a stable installation structure. The second bracket 20 can be installed with adjustable spacing between itself and the first bracket 10 via the first assembly part 22, facilitating adaptation to paper rolls of different widths. For example, a slide rail structure can be designed so that the second bracket 20 can move and adjust along the slide rail, and after adjustment, it can be locked with bolts and nuts to ensure the stability of the second bracket 20 during use. Alternatively, multiple holes can be designed, and the spacing between the first bracket 10 and the second bracket 20 can be adjusted through the hole positions, using bolts, nuts, or pins for fixation, achieving quick positioning and locking.

[0026] Furthermore, the first bracket 10 can also be installed in an adjustable manner, similar to the second bracket 20, allowing for spacing adjustments between both brackets 10 and 20 to achieve flexible adaptation. This increases the compatibility with paper rolls and meets the needs for rapid replacement and precise installation of various paper roll specifications.

[0027] like Figure 1 and Figure 2As shown, this disclosure also includes a fixing base 30 for mounting the first bracket 10 and the second bracket 20. The fixing base 30 is provided with a locking part 31 that cooperates with the adjusting part to adjust the distance. The fixing base 30 can be a plate-shaped or frame-shaped structure, or the frame structure of the printer 1, for the purpose of mounting the first bracket 10 and the second bracket 20, and providing sufficient structural strength to support the weight of the paper roll and the dynamic load during operation.

[0028] Specifically, the locking part 31 of this disclosure is a plurality of spaced first through holes 311, and the first assembly part 22 is used to cooperate with the first through holes 311 and lock the second bracket 20 to the fixed base 30 with bolts 221 or pins. The bolts 221 are bolts and nuts, and the pins are pins and anti-loosening plugs; or, the locking part 31 is a slide rail, and the first assembly part 22 is a cylinder, hydraulic cylinder or linear motor.

[0029] Thus, the second bracket 20 can be locked in place on the fixed base 30 through the cooperation of holes and pins, or through the use of holes and bolts and nuts, achieving multi-position adjustment and stable fixation, meeting the needs for rapid adaptation of paper rolls of different widths. Alternatively, automatic adjustment can be achieved by using a slide rail in conjunction with a cylinder, hydraulic cylinder, or linear motor, enabling automatic sliding and precise positioning of the second bracket 20 on the fixed base 30, improving adjustment efficiency and ease of operation, and adapting to various paper roll specifications.

[0030] Similarly, such as Figure 1 and Figure 2 As shown, the first bracket 10 of this disclosure is provided with a second assembly part 12 that cooperates with the locking part 31 to adjust the installation position. The second assembly part 12 is a bolt and nut structure or a pin structure that cooperates with the first through hole 311 for locking; or, the second assembly part 12 is a cylinder, a hydraulic cylinder, or a linear motor. Therefore, bidirectional adjustment of the distance between the first bracket 10 and the second bracket 20 is realized, so as to increase the upper or lower limit of adjustment for paper rolls of different specifications, thereby expanding the width range of adaptable paper rolls and improving the versatility and flexibility of the equipment.

[0031] The first bracket 10 of this disclosure is provided with a plurality of third fixing parts 13 spaced apart along the axial direction. One end of the first adjusting part 11 is provided with a first locking member 112 fixedly installed with the third fixing part 13. The other end of the first adjusting part 11 is provided with a first elastic member 113 between it and the first bracket 10. The first elastic member 113 can be a cylindrical spring or a spring sheet, etc.

[0032] Specifically, such as Figure 6 and Figure 7As shown, the third fixing part 13 can be a hole structure for locking with the adjusting part by bolts and nuts, or for installation by a shaft or pin. Specifically, the first bracket 10 has a groove for installing the first adjusting part 11, with holes penetrating the groove. Multiple holes are spaced axially on the first bracket 10, and the adjusting part 11 is installed in the holes by a stepped shaft (i.e., a shaft with a stepped end that can engage with the groove of the bracket). Then, the end of the first adjusting part 11 is locked onto the stepped shaft, thus fixing one end of the first adjusting part 11 to the first bracket 10. That is, the first locking member 112 and the third fixing part 13 can be locked with bolts. For example, the first adjusting part 11 has a third through hole so that the first adjusting part 11 can be locked to the first locking member 112 by screws or bolts. Alternatively, a third through hole can be provided on the first bracket 10 so that the first adjusting part 11 can be locked to the first locking member 112 by screws or bolts, while maintaining the flatness of the inner surface of the first adjusting part 11.

[0033] At the other end of the first adjusting part 11, a first elastic member 113 is installed, thus creating an elastic adjustment space between the first adjusting part 11 and the first support 10. Specifically, the first adjusting part 11 has a spring-loaded end that can be moved towards the first support 10 by applying external force. This facilitates the installation of the paper roll on the first fixing part 111 and the second fixing part 211, and the elastic force presses the end of the paper roll firmly, ensuring a stable installation. Once the paper roll is in place, the preload of the elastic member automatically compensates for any deviation or loosening of the paper roll during use, improving operational stability and positioning accuracy.

[0034] The second bracket 20 of this disclosure is provided with a plurality of fourth fixing parts 23 spaced apart along the axial direction, and one end of the second adjusting part 21 is provided with a second locking member 212 fixedly installed with the fourth fixing parts 23.

[0035] Similarly, the design of the fourth fixing part 23 and the second locking member 212 is the same as the design of the third fixing part 13 and the first locking member 112 described above. The structure and adjustment principle are the same. You can refer to the above description of the cooperation and adjustment of the third fixing part 13 and the first locking member 112. It will not be repeated here.

[0036] like Figure 4 As shown, a second elastic element 213 is provided between the other end of the second adjusting part 21 and the second support 20. The second elastic element 213 can be a cylindrical spring or a spring sheet, etc. The design of the second elastic element 213 creates an elastic adjustment space between the other end of the second adjusting part 21 and the second support 20, allowing the second adjusting part 21 to move towards the second support 20 when subjected to external force, thereby providing clearance for the installation of the paper roll. After installation, the elastic restoring force is used to press the end of the paper roll tightly to ensure stable positioning.

[0037] like Figure 5 As shown, the first fixing part 111 of this disclosure is detachably disposed on the first bracket 10. One side of the first fixing part 111 is provided with a first protrusion 1111 for cooperating with the paper roll, and the first fixing part 111 is provided with a second protrusion 1112 for cooperating with the paper roll on the opposite side of the first protrusion 1111. The outline size of the first protrusion 1111 is larger than the outline size of the second protrusion 1112.

[0038] Specifically, the first fixing part 111 can be a disc-shaped mounting block. The first protrusion 1111 and the second protrusion 1112 are on opposite sides of the disc-shaped mounting block and can be two protruding cylindrical structures. Since the inner diameter of a conventional paper roll is circular, if it is other shapes, it is only necessary to adapt the shape of the first protrusion 1111 and the second protrusion 1112 to match the shape of the inner diameter of the paper roll to ensure that the first protrusion 1111 and the second protrusion 1112 can be accurately embedded into both ends of the core of the paper roll to achieve coaxial positioning.

[0039] The first fixing part 111 is detachably installed on the first bracket 10, for example, by bolts, screws, clips or quick-release pins, which facilitates quick replacement of the appropriate protrusion size according to the paper roll specifications and improves the versatility of the mechanism.

[0040] The second fixing part 211 of this disclosure is a second through hole 2111 (e.g. Figure 3 (as shown), or, the second fixing part 211 is provided with the same structure as the first fixing part 111 (as shown). Figure 4 (As shown). The second fixing part 211 can be designed with a through hole for one end of the paper roll to be inserted and positioned. The other end of the paper roll is inserted through the protrusion of the first fixing part 111, thereby achieving quick positioning and clamping of both ends of the paper roll. The inner wall of the through hole structure can be provided with a wear-resistant layer or a ball bearing structure to reduce the frictional resistance when the end of the paper roll roll rolls, improve the smoothness of operation, and reduce wear.

[0041] Alternatively, the same structure as the first fixing part 111 can be designed, and the end of the paper roll can be inserted through the protrusion to achieve a symmetrical positioning method at both ends, thereby further improving the clamping stability and coaxiality accuracy.

[0042] Example 2 like Figure 8As shown, this embodiment provides a printer including a paper roll placement mechanism as described in Embodiment 1. This allows for the installation and use of various paper roll models. Furthermore, by adjusting the position of the mounting bracket and the adjustment frame, it can accommodate paper rolls of different widths, meeting the clamping requirements of different paper roll specifications and improving the versatility and flexibility of the mechanism. This enhances the printer's adaptability and operational efficiency, offering significant advantages, especially in office scenarios where frequent switching between multiple paper sizes is common.

[0043] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A paper roll placement mechanism, characterized in that, include: A first support (10) is provided with a first adjustment part (11) that can be adjusted axially, and a first fixing part (111) is provided on the first adjustment part (11) where one end of the paper roll is placed; and The second support (20) is provided with a first assembly part (22) that is installed with a spacing adjustment between it and the first support (10). The second support (20) is provided with a second adjustment part (21) that is axially telescopically adjustable. The second adjustment part (21) is provided with a second fixing part (211) for placing the other end of the paper roll.

2. The paper roll placement mechanism according to claim 1, characterized in that, It also includes a fixing seat (30) for mounting the first bracket (10) and the second bracket (20), and the fixing seat (30) is provided with a locking part (31) that cooperates with the adjusting part to adjust the distance.

3. The paper roll placement mechanism according to claim 2, characterized in that, The locking part (31) is a plurality of spaced first through holes (311), and the first assembly part (22) is a bolt (221) or pin that cooperates with the first through holes (311) and locks the second bracket (20) to the fixed base (30). Alternatively, the locking part (31) may be a slide rail, and the first assembly part (22) may be a cylinder, a hydraulic cylinder, or a linear motor.

4. The paper roll placement mechanism according to claim 3, characterized in that, The first bracket (10) is provided with a second assembly part (12) that cooperates with the locking part (31) to adjust the installation position. The second assembly part (12) is a bolt and nut structure or a pin structure that cooperates with the first through hole (311) for locking. Alternatively, the second assembly part (12) may be a cylinder, a hydraulic cylinder, or a linear motor.

5. The paper roll placement mechanism according to claim 1, characterized in that, The first bracket (10) is provided with a plurality of third fixing parts (13) spaced apart along the axial direction. One end of the first adjusting part (11) is provided with a first locking member (112) fixedly installed with the third fixing part (13). The other end of the first adjusting part (11) is provided with a first elastic member (113) between it and the first bracket (10).

6. The paper roll placement mechanism according to claim 1, characterized in that, The second bracket (20) is provided with a plurality of fourth fixing parts (23) spaced apart along the axial direction, and one end of the second adjusting part (21) is provided with a second locking member (212) fixedly installed with the fourth fixing parts (23).

7. The paper roll placement mechanism according to claim 6, characterized in that, A second elastic element (213) is provided between the other end of the second adjustment part (21) and the second bracket (20).

8. The paper roll placement mechanism according to claim 1, characterized in that, The first fixing part (111) is detachably disposed on the first bracket (10). A first protrusion (1111) for cooperating with the paper roll is provided on one side of the first fixing part (111), and a second protrusion (1112) for cooperating with the paper roll is provided on the opposite side of the first protrusion (1111). The outline size of the first protrusion (1111) is larger than the outline size of the second protrusion (1112).

9. The paper roll placement mechanism according to claim 1 or 8, characterized in that, The second fixing part (211) is a second through hole (2111), or the second fixing part (211) is configured with the same structure as the first fixing part (111).

10. A printer, characterized in that, Includes a paper roll placement mechanism as described in any one of claims 1 to 9.

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