Printer anti-offset mechanism

Abstract

The utility model provides a printer anti-offset mechanism, which relates to the technical field of thermal transfer printing, and comprises a middle frame, one side surface of the middle frame is hinged with a flip cover, a first rack and a second rack are respectively arranged in the middle frame, one side surface of the first rack and one side surface of the second rack are connected with baffle plates through screws, and the baffle plates are connected with the flip cover through screws. A transmission gear is installed in the middle frame, and the side faces, close to each other, of the first rack and the second rack are engaged with the outer surface of the transmission gear. According to the anti-deviation mechanism of the printer, the shifting wheel body with the large diameter is arranged outside the middle frame, so that the operation mode better conforms to human engineering, operation is conducted on the side face of the printer, whether paper is stably placed and clamped in place or not can be more accurately confirmed through cooperation of hands and eyes, the user experience can be improved, the operation mode is simplified, and the operation efficiency is improved. The locking mechanism does not need manual operation, and locking of the shifting wheel body can be completed while the turning cover and the middle frame are closed.

Description

Technical Field

[0001] This utility model relates to a printer anti-offset mechanism, belonging to the field of thermal transfer printing technology. Background Technology

[0002] Current paper jamming structures on the market typically have one fixed side and the other movable side. Once the paper is in a designated position, it is secured by a mechanical mechanism. This mechanism usually involves a rotating lever that deforms the plastic material under pressure, causing it to clamp into a slot and remain in place. Some paper jamming structures on the market also have movable sides. After moving to a designated position, they are secured by a mechanical mechanism. This mechanism uses damping gears to achieve fixation using their inherent torque. A rotating lever then deforms the plastic material under pressure, clamping it into a slot and securing it in place. Rotating the lever further secures the paper within the groove. The single-sided fixed, one-sided movable design is gradually being phased out due to its drawback: increased paper width. The smaller the contact area between the printing consumable and the printing component, the greater the probability of printing problems due to uneven printing force. For designs with movable sides, using damping gears is more expensive, requires higher damping values, and has lower stability. Using a rotating paddle where the plastic deforms and locks into a limiting groove to a designated position, the lifespan is limited by the wear of the plastic, resulting in a shorter lifespan. Furthermore, during sliding, the paddle's sliding position is at its base, which is usually not directly accessible with a finger, causing the paddle to tilt and resulting in uneven sliding.

[0003] Existing patent CN214355003U discloses a paper guide synchronous sliding mechanism for a width-adjustable printer, including a frame and a paper support shaft. The frame has two parallel support plates. The paper support shaft is located inside the frame and rotatably connected to it. A lead screw parallel to the paper support shaft is also provided inside the frame, located at the front of the frame. A paper feed shaft parallel to the lead screw is located below it. A positive thread nut and a negative thread nut are respectively provided at both ends of the lead screw. A right guide plate and a left guide plate are symmetrically arranged inside the frame, located between the lead screw and the frame, and respectively connected to the negative thread nut and the positive thread nut. The fixed connection includes protruding plates on the right and left stop plates. The lead screw has a section of unthreaded knurled surface in the middle and two sets of external threads with different directions. A positive thread nut and a negative thread nut are respectively connected to one set of external threads. The positive and negative lead screws used in the above patent require mold processing and have very high precision requirements. If machining is used, the cost of the positive and negative lead screws will be very high. The above patent has high assembly requirements, requiring positioning with a fixture to achieve centering and limiting. In addition, the diameter of the actuating teeth in the above patent is small, making it more difficult to use. Therefore, we provide a printer anti-deviation mechanism to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a printer anti-offset mechanism, the specific technical solution of which is as follows:

[0005] A printer anti-offset mechanism includes a middle frame, a flip cover hinged to one side of the middle frame, a first rack and a second rack respectively disposed inside the middle frame, a baffle connected to one side of the first rack and one side of the second rack by screws, a transmission gear installed inside the middle frame, the sides of the first rack and the second rack close to each other meshing with the outer surface of the transmission gear, a toggle wheel body installed on the right side of the middle frame, and the teeth on the left side of the toggle wheel body meshing with the outer surface of the transmission gear.

[0006] Preferably, a rotary wheel fixing plate is connected to the left side of the middle frame by screws, and a silicone pad is fixedly installed on the left side of the rotary wheel fixing plate.

[0007] Preferably, the bottom surface of the middle frame is connected to a rack fixing plate by screws.

[0008] Preferably, the two baffles have the same shape and are symmetrical.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] This printer's anti-deviation mechanism features a large-diameter actuating wheel on the outside of the frame, making operation more ergonomic. Operating from the side of the machine, with hand-eye coordination, allows for more precise confirmation that the paper is securely clamped, improving the user experience. The teeth on the left side of the actuating wheel mesh with a transmission gear, and the outer surface of the transmission gear meshes with the outer surfaces of the first and second racks respectively. This allows users to easily adjust the positions of the first and second racks by moving the actuating wheel. A baffle is provided on the surface of the first rack and the upper surface of the second rack, so that the first rack and the second rack can smoothly drive the two baffles to adjust their positions when they move. This device can effectively improve stability and avoid the extremely poor operating experience of the baffles getting stuck or unable to slide during the sliding process. Compared with the comparison document, this device has greatly reduced the number of parts and simplified the assembly method. Moreover, this device realizes stepless adjustment and avoids the situation where the consumables are not properly restricted due to the limit. This device simplifies the operation method. The locking mechanism does not require manual operation. The main body of the dial wheel can be locked at the same time as the flip cover and the middle frame are closed. Attached Figure Description

[0011] Figure 1 This is a front view of the present invention;

[0012] Figure 2 This is a bottom view of the present invention;

[0013] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0014] Figure 4 This is a three-dimensional structural diagram of the main body of the actuating wheel in this utility model.

[0015] Figure descriptions: 1. Baffle; 2. Flip cover; 3. Actuator wheel fixing plate; 4. Silicone pad; 5. Actuator wheel body; 6. First rack; 7. Transmission gear; 8. Rack fixing plate; 9. Second rack; 10. Middle frame. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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. 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.

[0018] Please see Figure 1-4 In this utility model, a printer anti-deviation mechanism includes a middle frame 10, a flip cover 2 hinged to one side of the middle frame 10, a first rack 6 and a second rack 9 respectively disposed inside the middle frame 10, and baffles 1 connected to one side of the first rack 6 and one side of the second rack 9 by screws, a transmission gear 7 installed inside the middle frame 10, the sides of the first rack 6 and the second rack 9 that are close to each other meshing with the outer surface of the transmission gear 7, a actuating wheel body 5 installed on the right side of the middle frame 10, the teeth on the left side of the actuating wheel body 5 meshing with the outer surface of the transmission gear 7, and the mechanism is achieved by hinged middle frame 10 to flip cover 2. Together, when the flip cover 2 is closed, the ribs on the inner wall of the flip cover 2 will press the actuation wheel fixing plate 3 inward and deform it, so that the left side of the silicone pad 4 can press the actuation wheel body 5 tightly. By meshing the teeth on the left side of the actuation wheel body 5 with the transmission gear 7, the user can drive the transmission gear 7 to rotate by turning the actuation wheel body 5. By meshing the outer surface of the transmission gear 7 with the outer surfaces of the first rack 6 and the second rack 9, the rotation of the transmission gear 7 can drive the first rack 6 and the second rack 9 to move synchronously, so that the position and spacing of the two baffles 1 can be easily adjusted.

[0019] The left side of the middle frame 10 is connected to the actuation wheel fixing plate 3 by screws. A silicone pad 4 is fixedly installed on the left side of the actuation wheel fixing plate 3. The silicone pad 4 has a large friction force and anti-slip characteristics. Therefore, when the ribs on the inner wall of the flip cover 2 squeeze the actuation wheel fixing plate 3 inward and deform it, the left side of the silicone pad 4 can make close contact with the right side of the actuation wheel body 5, thereby effectively limiting the actuation wheel body 5. After the actuation wheel body 5 is fixed, it can prevent the two baffles 1 from becoming loose during use, thereby effectively avoiding the printing offset caused by the loosening of the two baffles 1.

[0020] The bottom surface of the middle frame 10 is connected to the rack fixing plate 8 by screws. By using screws to connect the rack fixing plate 8 to the bottom surface of the middle frame 10, the rack fixing plate 8 can limit the first rack 6 and the second rack 9. The two baffles 1 have the same shape and are symmetrical. The two baffles 1 with the same shape and are symmetrical can adjust their positions according to the first rack 6 and the second rack 9 respectively, and the two baffles 1 can jointly limit the printing paper.

[0021] The working principle of this utility model is as follows:

[0022] In use, the operator first places the printing paper between the two baffles 1. Then, the operator moves the actuating wheel body 5 upwards. The actuating wheel body 5 cooperates with the transmission gear 7. The rotation of the actuating wheel body 5 drives the transmission gear 7 to rotate. The transmission gear 7 cooperates with the first rack 6 and the second rack 9. The rotation of the transmission gear 7 drives the first rack 6 and the second rack 9 to move in opposite directions at the same frequency. The movement of the first rack 6 and the second rack 9 can respectively drive the two baffles 1 to move in opposite directions. When the two baffles 1 clamp the printing paper together, the operator can close the flip cover 2. After the flip cover 2 is closed, the ribs on its inner wall can squeeze the actuating wheel fixing plate 3 to deform it inwards. The inward deformation of the actuating wheel fixing plate 3 can cause the silicone pad 4 to squeeze the actuating wheel body 5. After the actuating wheel body 5 is fixed, the transmission gear 7 is locked, thereby fixing the two baffles 1.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0025] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A printer anti-offset mechanism, comprising a middle frame (10), characterized in that: A flip cover (2) is hinged to one side of the middle frame (10). A first rack (6) and a second rack (9) are respectively provided inside the middle frame (10). A baffle (1) is connected to one side of the first rack (6) and one side of the second rack (9) by screws. A transmission gear (7) is installed inside the middle frame (10). The sides of the first rack (6) and the second rack (9) that are close to each other are engaged with the outer surface of the transmission gear (7). A turntable body (5) is installed on the right side of the middle frame (10). The teeth on the left side of the turntable body (5) are engaged with the outer surface of the transmission gear (7).

2. The printer anti-offset mechanism according to claim 1, characterized in that: The left side of the middle frame (10) is connected to a rotary wheel fixing plate (3) by screws, and a silicone pad (4) is fixedly installed on the left side of the rotary wheel fixing plate (3).

3. The printer anti-offset mechanism according to claim 1, characterized in that: The bottom surface of the middle frame (10) is connected to a rack fixing plate (8) by screws.

4. The printer anti-offset mechanism according to claim 1, characterized in that: The two baffles (1) have the same shape and are symmetrical.

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