A type of anti-reverse ribbon box

Abstract

This application relates to the technical field of thermal printing ribbon cartridges, specifically to an anti-reverse ribbon cartridge, comprising a main cartridge body, which is divided into upper and lower layers. The upper layer is a label cartridge, and the lower layer is a dyeing cartridge. The dyeing cartridge has a receiving cavity and a tape-carrying cavity that does not completely surround the receiving cavity. A tape-carrying notch and a tape-returning notch are provided on one side of the receiving cavity. A tape wheel assembly is provided inside the receiving cavity, and a tape that extends out of the receiving cavity through the tape-carrying notch and is wound around the outside of the receiving cavity is wound on the tape wheel assembly. A connecting port that runs vertically through the dyeing cartridge is provided on the side of the tape-carrying cavity away from the tape-carrying notch, and a label outlet is provided on the side of the tape-carrying cavity near the tape-carrying notch. The label cartridge contains a label wheel and a label tape wound on the label wheel. One end of the label tape extends into the tape-carrying cavity through the connecting port and extends out through the label outlet. A limiting component for preventing the label tape from reversing is provided inside the label outlet, which stably prevents the label tape from reversing.

Description

Technical Field

[0001] This application relates to the technical field of thermal printing ribbon cartridges, and in particular to an anti-reverse ribbon cartridge. Background Technology

[0002] The ribbon cartridge is a core consumable for thermal transfer printers. It transfers ink from the ribbon to the printing medium (such as paper, plastic, or textiles) through heating. Its structure includes a main cartridge, which is divided into upper and lower layers: an upper label cartridge and a lower dyeing cartridge. The dyeing cartridge contains a receiving cavity and a tape-carrying cavity that does not completely surround the receiving cavity. Two tape-carrying notches are located on one side of the receiving cavity. A ribbon roller assembly is installed inside the receiving cavity, and the ribbon extends through the notches from the receiving cavity and is wound around the outside of the receiving cavity. A vertically extending section is located on the side of the tape-carrying cavity away from the tape-carrying notches. The dyeing box has a connecting port, and the tape carrier cavity has a label outlet on the side near the tape carrier gap. Inside the label box are label wheels and label tape wound on the label wheels. One end of the label tape extends into the tape carrier cavity through the connecting port and extends out through the label outlet. The tape wheel assembly includes a take-up wheel and a tape wheel. The take-up wheel works with the tape wheel to support the tape and prevent it from slipping. The tape wheel is mainly responsible for this. The tape wheel has a torsion spring inside. When the tape wheel rotates, the torsion spring makes frictional contact with the inner wall of the tape wheel. At the same time, the torsion spring is compressed, generating a stable damping force, thereby preventing the tape from slipping.

[0003] However, existing ribbon cartridges present a technical problem: when using a ribbon cartridge for label printing, the label tape exhibits significant backlash when pushed (i.e., the label tape moves backward under the pushing force, and the friction of the backward-moving label tape causes the ribbon to rotate, resulting in the release of the spring in the ribbon wheel, causing the entire ribbon to rotate significantly, leading to misprinting of the pattern on the label tape). This reduces the accuracy of the label tape and affects the printing effect. To solve this problem, existing technologies have incorporated an arc-shaped protrusion located inside the label exit. This protrusion can hold the label tape extending from the label exit, increasing the tension of the label tape and reducing the significant backlash. However, due to its arc shape, its ability to prevent backlash is quite unstable. If the arc is not included, the label tape may be worn off by the protrusion when it passes over it. Therefore, this application proposes an anti-backlash ribbon cartridge. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide an anti-backflow tape cartridge for reliably preventing the label tape from backflowing.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: an anti-reverse ribbon cartridge, comprising a main cartridge body, the main cartridge body being divided into upper and lower layers, the upper layer being a label cartridge and the lower layer being a dyeing cartridge, the dyeing cartridge having an internal receiving cavity and a tape-carrying cavity that does not completely surround the receiving cavity, the receiving cavity having a tape-carrying notch and a tape-returning notch on one side, the receiving cavity having a tape wheel assembly inside the receiving cavity, the tape wheel assembly having a tape that extends out of the receiving cavity through the tape-carrying notch and is wound around the outside of the receiving cavity, the tape-carrying cavity having a connecting port that runs vertically through the dyeing cartridge on the side away from the tape-carrying notch, the tape-carrying cavity having a label outlet on the side near the tape-carrying notch, the label cartridge having a label wheel and a label tape wound on the label wheel inside, one end of the label tape extending into the tape-carrying cavity through the connecting port and extending out through the label outlet, the label outlet having a limiting component for preventing the label tape from retracting.

[0006] Furthermore, the limiting component includes a mounting block installed on the inner wall of the label outlet and a plurality of inclined top blocks fixedly mounted on the mounting block and inclined outward from the label outlet, wherein the end of the inclined top block away from the mounting block abuts against the label tape.

[0007] By adopting the above technical solution, under normal conditions, the label tape moves outward from the label outlet along the tilt direction of the inclined block, contacts the color ribbon on the outside of the receiving cavity, and is printed. When the label tape is pushed and hit, it is subjected to a backward force and is about to move backward. The direction of its action forms a reverse angle with the tilt direction of the inclined block. At this time, the inclined block holds the label tape through mechanical limiting action and uses the reverse force to form a jamming effect, effectively preventing the label tape from displacing in the direction of the label outlet, thereby stably preventing the label tape from moving backward.

[0008] Furthermore, the conveyor belt cavity is equipped with an anti-reverse roller assembly.

[0009] Furthermore, the anti-reverse roller assembly includes two vertical fixed shafts fixedly installed in the conveyor belt cavity and a rolling shaft rotatably sleeved on the fixed shafts. The label tape in the conveyor belt cavity extends around the two rolling shafts in the direction of the label outlet.

[0010] By adopting the above technical solution, when the label tape moves normally towards the label outlet, the rolling shaft rotates freely clockwise (or counterclockwise), forming rolling friction with the label tape surface, significantly reducing movement resistance and ensuring smooth label tape transmission. At this time, the rotation direction of the rolling shaft is consistent with the label tape's travel direction, and no additional resistance is generated. However, because the label tape travels around the rolling shaft, when the label tape retracts, the vertical rolling shaft restricts the label tape from retracting in its original direction, blocking the label tape and further preventing the label tape from retracting.

[0011] Furthermore, the ribbon wheel assembly includes a recovery wheel and a ribbon wheel, the bottom surface of the dyeing box has an opening, the opening exposes the receiving cavity and the conveyor cavity, the bottom surface of the dyeing box is provided with a sealing cover to block the opening, and the inner side of the sealing cover and the bottom surface of the ribbon wheel are provided with a damping component to apply damping to the ribbon.

[0012] Furthermore, the damping assembly includes a guide hole on the bottom surface of the ribbon wheel, an annular spring sheet installed at the bottom end of the ribbon wheel, a guide post fixedly mounted on the sealing cover and corresponding to the guide hole, and a compression ring fixedly mounted around the guide post and used to compress the annular spring sheet. The annular spring sheet is compressed by the compression ring to compress the ribbon.

[0013] While the aforementioned technical solution effectively prevents label tape retraction by using the limiting component and anti-reverse roller assembly, the label tape, restricted by these components, may slightly bend under the back thrust. This bending can still transmit a small amount of thrust to the ribbon, potentially causing slight retraction. This could lead to the ribbon pulley releasing its elasticity, resulting in significant retraction and misprints. The damping component solves this problem by using a ring-shaped spring instead of a torsion spring. The compression ring presses against the ring-shaped spring, causing the compression ring to squeeze... The annular spring presses against the ribbon, creating damping and preventing slippage. This damping is bidirectional; whether the ribbon is moving forward or backward, the damping remains constant. When a curved label tape transfers a small force to the ribbon, the damping from the annular spring prevents this force from affecting the ribbon and causing it to retract. This effectively prevents significant ribbon retraction, avoids misprints, and improves printing accuracy.

[0014] Furthermore, the label outlet is provided with an installation structure for installing the limiting component.

[0015] Furthermore, the mounting structure includes a snap-fit ​​groove on the bottom surface of the label outlet side and a snap-fit ​​block fixedly mounted on the side of the mounting block opposite to the inclined top block and adapted to the snap-fit ​​groove.

[0016] By adopting the above technical solution, when installing the limiting component, the staff only needs to pick up the installation block, align the snap-fit ​​block with the snap-fit ​​slot, and then push the installation block into the label outlet. At the same time, the snap-fit ​​block extends into the snap-fit ​​slot, thus completing the installation of the limiting component. When the staff needs to disassemble the limiting component, they only need to pull out the installation block, making it more convenient for the staff to install and remove the limiting component.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting the limiting component, when the label tape is pushed and hit, the label tape is subjected to a backward force and is about to move backward. The direction of its action forms a reverse angle with the tilting direction of the inclined block. At this time, the inclined block holds the label tape through mechanical limiting action and uses the reverse force to form a jamming effect, effectively preventing the label tape from displacing in the direction of the label exit, thereby stably preventing the label tape from moving backward.

[0018] 2. By setting up the anti-backflow roller assembly, when the label tape retracts, the vertical roller will restrict the label tape from retracting in the original direction, blocking the label tape and thus further preventing the label tape from retracting.

[0019] 3. By setting up the damping component, the annular spring presses against the ribbon, thereby damping the ribbon and preventing it from slipping. The damping generated by the annular spring is bidirectional; whether the ribbon is moving forward or backward, the damping is always present. Thus, even when a curved label tape transmits a small pushing force to the ribbon, the damping from the annular spring prevents this small force from affecting the ribbon and causing it to retract. This effectively prevents the ribbon from retracting significantly, thus avoiding misprints and improving the accuracy of ribbon printing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the embodiment; Figure 2 This is a bottom view of the overall structure of the embodiment with the sealing cap hidden; Figure 3 This is a schematic diagram of the internal structure of the label box; Figure 4 yes Figure 2 Enlarged view of section A in the middle; Figure 5 This is a schematic diagram of the specific structure of the sealing cap.

[0021] Reference numerals: 1. Label box; 10. Label wheel; 11. Label tape; 12. Observation port; 13. Anti-slip protrusion; 2. Dye box; 20. Receiving cavity; 21. Tape transport cavity; 22. Tape transport notch; 23. Connecting port; 24. Label outlet; 25. Sealing cap; 26. Tape return notch; 3. Tape pulley assembly; 30. Tape; 31. Recycle wheel; 32. Tape pulley; 4. Limiting assembly; 40. Mounting block; 41. Angled top block; 5. Anti-reverse roller assembly; 50. Fixed shaft; 51. Rolling shaft; 6. Damping assembly; 60. Guide hole; 61. Annular spring; 62. Guide post; 63. Extrusion ring; 7. Mounting structure; 70. Snap-fit ​​groove; 71. Snap-fit ​​block. Detailed Implementation

[0022] The present application will be further described in detail below with reference to the accompanying drawings.

[0023] Reference Figure 1 , Figure 2 as well as Figure 3 A type of anti-return ribbon cartridge includes a main body divided into upper and lower layers. The upper layer is a label box 1, and the lower layer is a dyeing box 2. The dyeing box 2 has a receiving cavity 20 and a tape-carrying cavity 21 that does not completely surround the receiving cavity 20. A tape-carrying notch 22 and a tape-returning notch 26 are provided on one side of the receiving cavity 20. A ribbon pulley set 3 is arranged inside the receiving cavity 20. A ribbon 3 that extends out of the receiving cavity 20 through the tape-carrying notch 22 and is wound around the outside of the receiving cavity 20 is wound on the ribbon pulley set 3. 0. A connecting port 23, which runs vertically through the dyeing box 2, is provided on the side of the conveyor cavity 21 away from the conveyor notch 22. A label outlet 24 is provided on the side of the conveyor cavity 21 near the conveyor notch 22. The label box 1 contains a label wheel 10 and a label strip 11 wound on the label wheel 10. One end of the label strip 11 extends into the conveyor cavity 21 through the connecting port 23 and extends out through the label outlet 24. A limiting component 4 for preventing the label strip 11 from retracting is provided in the label outlet 24. (Refer to...) Figure 4 The limiting component 4 includes a mounting block 40 installed on the inner wall of the label outlet 24 and a plurality of inclined top blocks 41 fixedly mounted on the mounting block 40 and inclined outward from the label outlet 24. The end of the inclined top block 41 away from the mounting block 40 abuts against the label tape 11. The ribbon wheel set 3 includes a recycling wheel 31 and a ribbon wheel 32.

[0024] The mounting block 40 and the inclined top block 41 are integrally formed. The outer top surface of the label box 1 is provided with an observation port 12 for easy observation of the remaining amount of label tape 11 by the staff. The label box 1 is provided with anti-slip protrusions 13 on both sides of the outside to facilitate the staff to pick up the entire main box. The tape 30 travels as follows: the tape 30 is wound on the tape 30 wheel, one end of the tape 30 extends out of the receiving cavity 20 through the tape travel notch 22 and continues to extend along the outer wall of the receiving cavity 20, and then extends into the receiving cavity 20 through the tape return notch 26, and then is wound on the return wheel 31.

[0025] Under normal conditions, the label tape 11 moves out of the label outlet 24 along the tilt direction of the inclined push block 41 and contacts the color tape 30 on the outside of the receiving cavity 20 for printing. When the label tape 11 is pushed and bumped, the label tape 11 is subjected to a retraction force and is about to retract. When it is about to retract, the direction of its action forms a reverse angle with the tilt direction of the inclined push block 41. At this time, the inclined push block 41 holds the label tape 11 through mechanical limiting action and uses the reverse force to form a jamming effect, effectively preventing the label tape 11 from displacing in the direction of the label outlet 24, thereby stably preventing the label tape 11 from retracting.

[0026] In this embodiment, the conveyor cavity 21 is provided with an anti-backward roller assembly 5. The anti-backward roller assembly 5 includes two vertical fixed shafts 50 fixedly installed in the conveyor cavity 21 and a rolling shaft 51 rotatably sleeved on the fixed shafts 50. The label tape 11 in the conveyor cavity 21 extends around the two rolling shafts 51 toward the label outlet 24.

[0027] By configuring the anti-reverse roller assembly 5, when the label tape 11 moves normally towards the label outlet 24, the roller shaft 51 rotates freely clockwise (or counterclockwise), forming rolling friction with the surface of the label tape 11, significantly reducing movement resistance and ensuring smooth transmission of the label tape 11. At this time, the rotation direction of the roller shaft 51 is consistent with the travel direction of the label tape 11, and no additional resistance is generated. However, because the label tape 11 travels around the roller shaft 51, when the label tape 11 retracts, the vertical roller shaft 51 restricts the label tape 11 from retracting in its original direction, blocking the label tape 11, thereby further preventing the label tape 11 from retracting.

[0028] In other embodiments, there can be two or more fixed shafts 50 and rolling shafts 51, which can also prevent the label tape 11 from retracting. However, compared to the two fixed shafts 50 and rolling shafts 51 in this embodiment, setting more than two fixed shafts 50 and rolling shafts 51 will make it more troublesome for workers to install the label tape 11. However, more than two fixed shafts 50 and rolling shafts 51 will make the retraction path of the label tape 11 more complicated. Compared to two fixed shafts 50 and rolling shafts 51, the effect of preventing retraction is better. However, with the setting of the limiting component 4, setting too many fixed shafts 50 and rolling shafts 51 will make the retraction path of the label tape 11 more complicated and redundant. Therefore, it is better to use two fixed shafts 50 and rolling shafts 51.

[0029] Although the limiting component 4 and the anti-backward roller group 5 can effectively prevent the label tape 11 from backing up, the label tape 11, which is restricted by the limiting component 4 and the anti-backward roller group 5, may bend slightly after being subjected to the backward force. The bent label tape 11 will still transmit a small pushing force to the ribbon 30, which may cause the ribbon 30 to back up slightly, causing the ribbon wheel 32 to release its elasticity, which may cause the ribbon 30 to back up significantly, resulting in misprints. In order to solve this technical problem, this embodiment has an opening on the bottom surface of the dyeing box 2, which exposes the receiving cavity 20 and the conveyor cavity 21. A sealing cover 25 is provided on the bottom surface of the dyeing box 2 to block the opening, and a damping component 6 for applying damping to the ribbon 30 is provided on the inner side of the sealing cover 25 and the bottom surface of the ribbon wheel 32. Figure 2 and Figure 5The damping assembly 6 includes a guide hole 60 on the bottom surface of the ribbon wheel 32, an annular spring 61 installed at the bottom end of the ribbon wheel 32, a guide post 62 fixedly installed on the sealing cover 25 and corresponding to the guide hole 60, and a compression ring 63 fixedly installed around the guide post 62 and used to compress the annular spring 61. The annular spring 61 is compressed by the compression ring 63 and then compresses the ribbon 30.

[0030] By replacing the torsion spring with an annular spring 61, the compression ring 63 presses against the annular spring 61, causing the annular spring 61 to press against the ribbon 30. This damping of the ribbon 30 prevents it from slipping. The damping generated by the annular spring 61 is bidirectional; regardless of whether the ribbon 30 is moving forward or backward, the damping is always present. Thus, even when a curved label tape transmits a small pushing force to the ribbon 30, the damping from the annular spring 61 prevents this small force from affecting the ribbon 30 and causing it to retract. This effectively prevents the ribbon 30 from retracting significantly, thus avoiding misprints and improving printing accuracy.

[0031] In this embodiment, the label outlet 24 is provided with a mounting structure 7 for installing the limiting component 4, as shown in the figure. Figure 4 The installation structure 7 includes a snap-fit ​​groove 70 on the bottom surface of the label outlet 24 and a snap-fit ​​block 71 fixedly disposed on the side of the installation block 40 away from the inclined top block 41 and adapted to the snap-fit ​​groove 70, wherein the snap-fit ​​block 71 is integrally formed with the installation block 40.

[0032] When installing the limiting component 4, the staff only needs to pick up the mounting block 40, align the snap-fit ​​block 71 with the snap-fit ​​groove 70, and then push the mounting block 40 into the label outlet 24. At the same time, the snap-fit ​​block 71 extends into the snap-fit ​​groove 70, thus completing the installation of the limiting component 4. When the staff needs to disassemble the limiting component 4, they only need to pull out the mounting block 40, making it more convenient for the staff to install and disassemble the limiting component 4.

[0033] In other embodiments, the limiting component 4 can be installed in a detachable manner using adhesive or magnetic attraction. This also facilitates the installation and removal of the limiting component 4. Moreover, compared to the installation structure 7 in this embodiment, adhesive or magnetic attraction does not require slotting, making installation simpler. On the other hand, since the limiting component 4 needs to withstand the retraction force of the label tape 11, adhesive or magnetic attraction may easily detach after repeated stress. However, by using the snap-fit ​​groove 70 in conjunction with the snap-fit ​​block 71, the limiting component 4 can remain firmly installed in the label outlet 24 even after being subjected to retraction force, and the service life of the installation structure 7 is longer than that of adhesive or magnetic attraction. In practical applications, a specific structure of the limiting component 4 can be flexibly selected according to needs.

[0034] Specific implementation process: When laying out the route of the label tape 11, first pull the label tape 11 through the connecting port 23 into the tape carrier cavity 21, then continue to pull the label tape 11 so that the label tape 11 continues to move around the two rolling shafts 51, and then pull the label tape 11 through the limiting component 4 to extend out of the label outlet 24.

[0035] When the label tape 11 moves normally toward the label outlet 24, the rolling shaft 51 rotates freely clockwise (or counterclockwise) and forms rolling friction with the surface of the label tape 11. Then, following the tilt direction of the inclined top block 41, it moves outward toward the label outlet 24 and contacts the color tape 30 on the outside of the receiving cavity 20 for printing.

[0036] When the label tape 11 is pushed and is about to retract, its direction of action forms a reverse angle with the tilting direction of the inclined block 41. At this time, the inclined block 41 holds the label tape 11 through mechanical limiting action. At the same time, the vertical rolling shaft 51 restricts the label tape 11 from retracting in the original direction and blocks the label tape 11. During this process, the annular spring 61, which is pressed by the compression ring 63, also continuously presses the ribbon 30 to prevent the small thrust transmitted by the bent label tape 11 from affecting the ribbon 30.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tape retraction prevention cartridge, comprising a main body, the main body being divided into upper and lower layers, the upper layer being a label cartridge and the lower layer being a dyeing cartridge, the dyeing cartridge having an internal receiving cavity and a tape-carrying cavity that does not completely surround the receiving cavity, the receiving cavity having a tape-carrying notch and a tape retraction notch on one side, a tape reel assembly being disposed inside the receiving cavity, a tape extending through the notch and wound around the outside of the receiving cavity being wound on the tape reel assembly, a connecting port penetrating the dyeing cartridge being disposed on the side of the tape-carrying cavity away from the tape-carrying notch, a label outlet being disposed on the side of the tape-carrying cavity near the tape-carrying notch, a label wheel and label tape wound on the label wheel being disposed inside the label box, one end of the label tape extending into the tape-carrying cavity through the connecting port and extending out through the label outlet, characterized in that... The label outlet is equipped with a limiting component to prevent the label tape from retracting.

2. The anti-reverse ribbon cartridge according to claim 1, characterized in that, The limiting component includes a mounting block installed on the inner wall of the label outlet and a plurality of inclined top blocks fixedly mounted on the mounting block and inclined outward from the label outlet, wherein the end of the inclined top block away from the mounting block abuts against the label tape.

3. The anti-reverse ribbon cartridge according to claim 2, characterized in that, The label outlet is equipped with a mounting structure for installing the limiting component.

4. The anti-reverse ribbon cartridge according to claim 3, characterized in that, The installation structure includes a snap-fit ​​groove on the bottom surface of the label outlet side and a snap-fit ​​block fixedly mounted on the side of the mounting block opposite to the inclined top block and adapted to the snap-fit ​​groove.

5. The anti-reverse ribbon cartridge according to claim 1, characterized in that, The conveyor belt cavity is equipped with an anti-reverse roller assembly.

6. The anti-reverse ribbon cartridge according to claim 5, characterized in that, The anti-backflow roller assembly includes two vertical fixed shafts fixedly installed in the conveyor belt cavity and a rolling shaft rotatably sleeved on the fixed shafts. The label tape in the conveyor belt cavity extends around the two rolling shafts in the direction of the label outlet.

7. The anti-reverse ribbon cartridge according to claim 1, characterized in that, The ribbon wheel assembly includes a recovery wheel and a ribbon wheel. The bottom surface of the dyeing box has an opening that exposes a receiving cavity and a conveyor cavity. The bottom surface of the dyeing box is provided with a sealing cover to block the opening. The inner side of the sealing cover and the bottom surface of the ribbon wheel are provided with a damping component to apply damping to the ribbon.

8. The anti-reverse ribbon cartridge according to claim 7, characterized in that, The damping assembly includes a guide hole on the bottom surface of the ribbon pulley, an annular spring sheet installed at the bottom end of the ribbon pulley, a guide post fixedly mounted on the sealing cover and corresponding to the guide hole, and a compression ring fixedly mounted around the guide post and used to compress the annular spring sheet, wherein the annular spring sheet presses the ribbon.

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