Side paper limiting mechanism of thermal transfer printer

Abstract

The utility model discloses a kind of side paper limiting mechanisms of heat transfer printer, belong to filtration technical field;Including printer body, the inside of printer body is provided with placement shaft, the end of placement shaft is inserted with rotating shaft, the outer wall of both ends of rotating shaft is provided with external thread, the both ends of rotating shaft are all sleeved with thread sleeve, the outer wall of one group of thread sleeve is provided with connecting rod, the inside of placement shaft is extended to outside by connecting rod, while the side of this connecting rod is provided with limit disc, and the outside of another group of thread sleeve is provided with mounting seat, the outside of mounting seat is sleeved with connecting ring.The utility model can dismantle one group of limit disc, then install back this group of limit disc after placing paper, make two groups of limit disc synchronous movement by rotating rotating shaft, complete to the both sides of paper limit, so that the effect of printing is better.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and in particular to a side paper limiting mechanism for a thermal transfer printer. Background Technology

[0002] A thermal transfer printer is a printing device that uses heat and pressure to transfer ink from a ribbon medium to a printing medium such as paper or film. Similar to the working principle of a fax machine printhead, it uses a special ribbon to transfer the toner coating on the ribbon to paper or other types of materials by heating.

[0003] During use, printing is usually done by rolling paper, which is typically directly attached to the printer's rotating rollers. The paper is then fixed in place by means of threaded blocks.

[0004] However, printers use paper rolls of varying widths, while the rollers are typically of the same length. Existing printers' side limiting mechanisms usually only restrict one side of the paper roll, resulting in the paper roll not being centered on the roller after being limited, thus affecting printing accuracy. To address this issue, we propose a side paper limiting mechanism for a thermal transfer printer. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies mentioned in the background section by proposing a side paper limiting mechanism for a thermal transfer printer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A side paper limiting mechanism for a thermal transfer printer includes a printer body. A placement shaft is disposed inside the printer body, and a rotating shaft is inserted into the end of the placement shaft. External threads are provided on the outer walls of both ends of the rotating shaft, and threaded sleeves are fitted onto both ends of the rotating shaft. A connecting rod is provided on the outer wall of one set of threaded sleeves, extending through the interior of the placement shaft to the outside. A limiting disc is provided on the side of the connecting rod. A mounting base is provided on the outside of the other set of threaded sleeves, and a connecting ring is fitted onto the outside of the mounting base. A support rod is provided on the outer wall of the connecting ring, and a limiting disc is also provided on the side of the support rod. One set of limiting discs can be disassembled, then the roll of paper can be fitted onto the outside of the placement shaft, and then the disassembled limiting discs can be installed. By rotating the rotating shaft, the two sets of limiting discs can be moved synchronously to limit the roll of paper, so that the roll of paper is located in the middle position of the placement shaft.

[0007] Preferably, the two sets of limiting discs are located at the left and right ends of the placement shaft, and the limiting discs are sleeved on the outside of the placement shaft; This can improve the stability of the movement of the limiting disc, thereby improving the limiting effect of the limiting disc on the paper.

[0008] Preferably, the ends of the connecting rod and the support rod are provided with rotation limiting blocks, the side wall of the limiting plate is provided with a rotation limiting groove, and the rotation limiting block extends into the interior of the rotation limiting groove; This allows the limit plate to rotate without affecting the rotation of the paper roll.

[0009] Preferably, the cross-section of the rotation limiting block is T-shaped, and a ball bearing is placed at the end of the rotation limiting block; This makes the rotation of the limit plate smoother and prevents the limit plate from separating from the connecting rod and support rod.

[0010] Preferably, a rotating block is provided at the end of the placement shaft, and a limiting rod is provided at the end of the rotating shaft, the limiting rod being inserted inside the rotating block; Personnel can rotate the rotating block to drive the rotating shaft, making the rotation of the rotating shaft more convenient.

[0011] Preferably, the limiting rod is a hexagon with a T-shaped cross-section, and a support spring is provided at one end of the limiting rod, with the other end of the support spring fixedly connected to the inner wall of the rotating block; It can pull the rotating block away from the end of the placement shaft, and at the same time, the rotating block can drive the rotating shaft to rotate during the rotation process.

[0012] Preferably, the end of the placement shaft is provided with a fixing hole, and the side wall of the rotating block is provided with a locking rod that is compatible with the fixing hole; The rotating block can be pulled to disengage the insert rod from the fixed recess, at which point the rotating block can rotate. Conversely, releasing the rotating block allows the insert rod to be inserted into the fixed recess, thus limiting the rotation shaft and fixing the limiting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model allows for the disassembly of a set of limiting discs, followed by the placement of the roll of paper and reassembly of the set of limiting discs. By rotating the rotating shaft, the two sets of limiting discs move synchronously, thereby limiting the two sides of the roll of paper and positioning it in the middle of the placement shaft, resulting in better printing quality.

[0014] 2. By pulling the rotating block, the insert rod can be disengaged from the fixed insert hole. At this time, the rotating block can rotate to adjust the position of the limiting plate. Then, by releasing the rotating block, the insert rod can be inserted into the fixed insert hole for limiting, thereby limiting and fixing the limiting plate, thus making the limiting plate better limiting the two sides of the paper roll. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a side paper limiting mechanism for a thermal transfer printer proposed in this utility model. Figure 2 for Figure 1 A schematic diagram showing the placement of the shaft in the center; Figure 3 for Figure 2 A frontal cross-sectional view; Figure 4 for Figure 3 A schematic diagram of the cracked structure of one of the limiting plates; Figure 5 for Figure 2 A cross-sectional structural diagram of the rotating block at the end of the shaft placed in the middle.

[0016] In the diagram: 1. Printer body; 2. Placement shaft; 3. Rotating shaft; 4. Threaded sleeve; 5. Connecting rod; 6. Limiting plate; 7. Mounting base; 8. Connecting ring; 9. Support rod; 10. Rotation limiting block; 11. Rotation limiting groove; 12. Rotating block; 13. Limiting rod; 14. Support spring; 15. Fixing hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1-5The illustrated side paper limiting mechanism of a thermal transfer printer includes a paper placement shaft 2 located inside the paper roll compartment of the printer body 1. The paper roll is fitted onto the outside of the placement shaft 2. Cavities are formed on both sides of the placement shaft 2. A rotating shaft 3 is inserted into the end of the placement shaft 2, passing through the two sets of cavities inside the placement shaft 2. The outer surface of the rotating shaft 3 within the two sets of cavities has two sets of opposite external threads. A threaded sleeve 4 is fitted onto the surface of the external threads of the rotating shaft 3. A connecting rod 5 is fixedly installed on the outer wall of the threaded sleeve 4 closest to the inside of the printer body 1, extending through the inside of the placement shaft 2 to the outside. A mounting base 7 is fixedly installed on the outside of the threaded sleeve 4 closest to the outside, with its end penetrating the paper roll. The placement shaft 2 extends to the outside, and the end of the mounting base 7 protrudes slightly from the outer surface of the placement shaft 2. A connecting ring 8 is then sleeved on the outside of the placement shaft 2. The connecting ring 8 and the outer wall of the mounting base 7 are provided with mating threads. At the same time, a support rod 9 is fixedly installed on the outer wall of the connecting ring 8. The side walls of both the connecting rod 5 and the support rod 9 are provided with limiting discs 6. The rotation limiting groove 11 is sleeved on the outside of the placement shaft 2. The side wall of the limiting disc 6 is provided with a rotation limiting groove 11. The side walls of both the connecting rod 5 and the support rod 9 are fixedly installed with rotation limiting blocks 10, so that the end of the rotation limiting block 10 extends into the interior of the rotation limiting groove 11. At the same time, the end of the rotation limiting block 10 is provided with a ball, so that the limiting disc 6 can rotate smoothly on the outer walls of the connecting rod 5 and the support rod 9.

[0019] For a detailed description of the rotating block 12 in this embodiment, please refer to [link / reference]. Figure 5 A rotating block 12 is provided at the end of the placement shaft 2, and a limiting rod 13 is fixedly installed at the end of the rotating shaft 3. The end of the rotating block 12 has a slot that matches the limiting rod 13. The limiting rod 13 is a hexagonal structure with a T-shaped cross-section. A support spring 14 is fixedly installed at the end of the limiting rod 13, and the other end of the support spring 14 is fixedly connected to the end of the slot inside the rotating block 12. At the same time, multiple sets of insert rods are fixedly installed in a ring on the side of the rotating block 12 near the end of the placement shaft 2, and multiple sets of fixing holes 15 that match the insert rods are opened at the end of the placement shaft 2, which can complete the rotation positioning of the rotating block 12.

[0020] Working principle: When using this device, rotate the support rod 9, which will cause the connecting ring 8 to rotate, thereby disengaging the connecting ring 8 from the outside of the mounting base 7. Then the limiting plate 6 can be removed, leaving the end of the placement shaft 2 in an open state. Then the roll of paper can be placed outside the placement shaft 2, and then the connecting ring 8 can be returned to the outside of the mounting base 7. The installation of the limiting plate 6 is completed by rotating the threaded connection.

[0021] Then, the rotating block 12 can be pulled, causing the rotating block 12 to drive the insert rod to disengage from the fixed insert hole 15. At this time, the rotating block 12 can be rotated, and the rotating block 12 drives the rotating shaft 3 to rotate through the limiting rod 13, thereby causing the rotating shaft 3 to synchronously drive the two sets of threaded sleeves 4 to move in opposite directions. One set of threaded sleeves 4 drives the connecting rod 5 and the limiting plate 6 to move, while the other set of threaded sleeves 4 drives the support rod 9 and the limiting plate 6 to move through the mounting base 7 and the connecting ring 8, so that the two sets of limiting plates 6 limit the two sides of the paper roll. At the same time, the paper roll can drive the limiting plate 6 to rotate along with it during the rotation, so that the rotation of the paper roll is not affected. Then, the rotating block 12 is released, so that the insert rod on the rotating block 12 is embedded into the fixed insert hole 15 for positioning.

[0022] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0023] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A side paper limiting mechanism for a thermal transfer printer, comprising a printer body (1), characterized in that, The printer body (1) is provided with a placement shaft (2) inside. A rotating shaft (3) is inserted into the end of the placement shaft (2). Both ends of the rotating shaft (3) are provided with external threads. Both ends of the rotating shaft (3) are fitted with threaded sleeves (4). One set of threaded sleeves (4) is provided with a connecting rod (5) on its outer wall. The connecting rod (5) extends through the interior of the placement shaft (2) to the outside. At the same time, a limiting plate (6) is provided on the side of the connecting rod (5). The other set of threaded sleeves (4) is provided with a mounting base (7). A connecting ring (8) is fitted on the outside of the mounting base (7). A support rod (9) is provided on the outer wall of the connecting ring (8). A limiting plate (6) is also provided on the side of the support rod (9).

2. The side paper limiting mechanism of a thermal transfer printer according to claim 1, characterized in that, The two sets of limiting discs (6) are located at the left and right ends of the placement shaft (2), and the limiting discs (6) are sleeved on the outside of the placement shaft (2).

3. The side paper limiting mechanism of a thermal transfer printer according to claim 2, characterized in that, The ends of the connecting rod (5) and the support rod (9) are provided with rotation limiting blocks (10), and the side wall of the limiting plate (6) is provided with a rotation limiting groove (11), and the rotation limiting block (10) extends into the interior of the rotation limiting groove (11).

4. The side paper limiting mechanism of a thermal transfer printer according to claim 3, characterized in that, The cross-section of the rotation limiting block (10) is T-shaped, and a ball bearing is placed at the end of the rotation limiting block (10).

5. The side paper limiting mechanism of a thermal transfer printer according to claim 1, characterized in that, The end of the placement shaft (2) is provided with a rotating block (12), and the end of the rotating shaft (3) is provided with a limiting rod (13), which is inserted inside the rotating block (12).

6. The side paper limiting mechanism of a thermal transfer printer according to claim 5, characterized in that, The limiting rod (13) is a hexagon with a T-shaped cross-section, and a support spring (14) is provided at the end of the limiting rod (13). The other end of the support spring (14) is fixedly connected to the inner wall of the rotating block (12).

7. The side paper limiting mechanism of a thermal transfer printer according to claim 6, characterized in that, The end of the placement shaft (2) is provided with a fixing hole (15), and the side wall of the rotating block (12) is provided with a rod that is compatible with the fixing hole (15).

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