Printer ribbon cartridge accurate positioning and foolproof installation device

Abstract

This invention provides a foolproof device for accurate positioning and installation of printer ribbon cartridges, relating to the field of printer ribbon cartridge installation technology. The device includes a ribbon cartridge body with two first support plates fixedly connected inside. Each first support plate has a second slot, and a ribbon clip is located at the top of the first support plate. In this device, the ribbon extends along the slot, allowing it to slide along the bottom of a roller. Rotating the rotating shaft tightens the ribbon. This structure is advantageous because the ribbon clips on both sides of the ribbon are conveniently located, preventing the ribbon from being too long. Failure to quickly and accurately locate the ribbon ends would cause installation inconvenience. When positioning and installing the two ends of the ribbon, the first and second gears are simultaneously engaged, reducing installation difficulty.

Description

Technical Field

[0001] This invention relates to a foolproof device for installing printer ribbon cartridges, specifically a foolproof device for accurately positioning and installing printer ribbon cartridges, belonging to the technical field of printer ribbon cartridge installation. Background Technology

[0002] A ribbon cassette is a device specifically designed for dot matrix printers to hold ribbons. The ribbon cassette is the ribbon holder, and the ribbon is the ribbon cartridge. In other words, the ribbon is mounted on the ribbon cassette, and the ribbon cassette is fixed to the printer. To put it more simply: the ribbon is like the ink in an inkjet printer, and the ribbon cassette is like the ink cartridge.

[0003] The utility model according to patent number CN 218287215 U relates to a dot matrix printer ribbon cartridge, including a ribbon cartridge and a ribbon movably connected inside the cartridge. A cover extending into the ribbon is snapped onto the top of the cartridge. Fixing components for securing the cover are provided on both the left and right sides of the outer side of the cartridge. Four limiting components are provided on the inner top wall of the cover. Each fixing component includes a fixing post fixedly connected to the outer wall of the cartridge. A locking block extending into the cover is movably connected inside the fixing post. A movable block extending outside the fixing post is fixedly connected to the end of the locking block away from the cover. A pressure spring is fixedly connected outside the movable block and inside the fixing post. With this dot matrix printer ribbon cartridge, when the ribbon needs to be replaced, the cover can be removed simply by pulling the adjusting ring to disengage the locking block from the fixed cover, making ribbon replacement convenient for the user.

[0004] The above comparison documents show the following problems when installing printer ribbon cartridges:

[0005] 1. When installing the ribbon, because the ribbon is quite long, there is no positioning device to locate the two ends of the ribbon. Therefore, when installing the ends of the ribbon outwards, it is not possible to accurately locate the ends of the ribbon, which will cause inconvenience to the installation and increase the difficulty of installation. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to provide a foolproof device for accurately positioning and installing printer ribbon cartridges in order to solve the above-mentioned problems. This device addresses the issue that in the prior art, when installing ribbons, due to the relatively long length of the ribbon, there is no positioning device to locate the two ends of the ribbon. Therefore, when installing the ends of the ribbon outwards, it is impossible to accurately locate the ends of the ribbon, which causes inconvenience and increases the difficulty of installation.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a printer ribbon cartridge accurate positioning and installation error-proof device, comprising a ribbon cartridge body, wherein two first support plates are fixedly connected inside the ribbon cartridge body, a second slot is formed inside the first support plate, a ribbon clip is provided at the top of the first support plate, two vertical plates are fixedly connected at the bottom of the ribbon clip, a first spring is fixedly connected to one side of the vertical plate, the first spring is engaged with the first support plate through the second slot, a limit groove is slidably connected to one side of one of the ribbon clips, a first protrusion is fixedly connected to one side of the limit groove, and a second protrusion is provided on one side of the first protrusion. Both the first and second protrusions have an arc surface on one side. A second support plate is fixedly connected to one side of the second protrusion. A telescopic rod and a first spring are fixedly connected to one side of the second support plate. The first spring is located on the outside of the telescopic rod. A rotating rod is rotatably connected to the top of the second support plate. A first gear is fixedly connected to the outside of the rotating rod. A second gear is meshed with one side of the first gear. A rotating shaft is fixedly connected inside the second gear. The rotating shaft is rotatably connected to one side of the ribbon cartridge body. A release component is provided inside the ribbon buckle. A fixing component is provided on the top of the ribbon cartridge body. A limit component is provided inside the ribbon cartridge body.

[0010] Preferably, the release component includes a square groove, which is formed on one side of the ribbon clip. The ribbon clip and the limiting groove are slidably connected through the square groove. A third spring is fixedly connected to the top of the limiting groove and is disposed inside the square groove. The third spring is fixedly connected to the inner wall of the ribbon clip. A third protrusion is fixedly connected to the bottom of the limiting groove. A first slot is formed on one side of the limiting groove, and a third support plate is disposed inside the first slot. The limiting groove and the third support plate are engaged through the first slot. One side of the third protrusion and the third support plate are both set as arc surfaces. The third support plate is slidably connected inside the ribbon clip. By setting the third spring, the rebound force of the third spring can drive the limiting groove to move upward. The upward movement of the limiting groove drives the first protrusion to move upward. The upward movement of the first protrusion can release the limiting of the second protrusion, so that the second support plate is subjected to the elastic force of the first spring and moves towards the direction of the second gear. Finally, it drives the first gear to move closer to the direction of the second gear, thereby tightening the ribbon.

[0011] Preferably, the release assembly further includes a fifth support plate, which is fixedly connected to one side of the third support plate. A second spring is fixedly connected to the other side of the fifth support plate, and the second spring is fixedly connected to one side of the ribbon clip. A fourth support plate is fixedly connected to the top of the third support plate. By setting the second spring, the elastic force of the second spring can be used to fix the limiting groove. After the limiting groove is fixed, the position of the first protrusion can be positioned, so as to make it easier to leave a gap between the first gear and the second gear, which is convenient for removing or installing the ribbon.

[0012] Preferably, the fixing component includes a cover plate disposed on the top of the ribbon cartridge body. The top of the cover plate has four arc-shaped grooves, and a retaining plate is disposed inside the arc-shaped grooves. The cover plate and the retaining plate are slidably connected through the arc-shaped grooves. A sixth support plate is fixedly connected to the top of the retaining plate. Four limiting plates are fixedly connected to the inner wall of the ribbon cartridge body. The retaining plate is disposed at the bottom of the limiting plates. By setting the retaining plate, the cover plate can be fixed.

[0013] Preferably, the limiting component includes a seventh support plate, which is fixedly connected to the bottom of the inside of the ribbon box body. A second spring is provided on one side of the seventh support plate, and a protective plate is fixedly connected to the bottom of the inside of the ribbon box body. The second spring is disposed between the ribbon box body and the protective plate, and another first support plate is disposed between the protective plate and the second spring. By providing the second spring, the ribbon can be adhered.

[0014] Preferably, the ribbon clip has a groove inside, the ribbon is placed inside the groove, the groove is inclined, and the cross-sectional shape of the groove is rectangular. By setting the groove, the ribbon can pass through the groove to install both ends of the ribbon.

[0015] Preferably, an eighth support plate is fixedly connected to the bottom of the inside of the ribbon box body. The eighth support plate is fixedly connected to one end of the telescopic rod and the first spring. By setting the eighth support plate, the telescopic rod and the first spring can be supported, making the operation of the telescopic rod and the first spring more stable.

[0016] Preferably, grooves are provided on both sides of the ribbon box body, and a support frame is fixedly connected to the bottom of the ribbon box body. A roller is fixedly connected to the bottom of the support frame. By setting the roller, the ribbon can slide along the edge of the roller.

[0017] Preferably, two circular holes are provided on the other side of the ribbon cartridge body. The two circular holes are symmetrically arranged. By providing the circular holes, it is convenient to install the ribbon cartridge body and to prevent incorrect installation of the ribbon cartridge body.

[0018] Preferably, the ribbon buckle has a sliding groove inside, the third support plate is disposed inside the sliding groove, and the ribbon buckle and the third support plate are slidably connected through the sliding groove. By providing the sliding groove, the third support plate can slide along the inside of the ribbon buckle.

[0019] This invention provides a foolproof device for accurately positioning and installing printer ribbon cartridges, which has the following beneficial effects:

[0020] 1. This printer's ribbon cartridge features a precise positioning and foolproof installation device. The upward movement of the limiting groove causes the first protrusion to move upward. After the first protrusion moves upward, the second protrusion loses its limiting position. At this point, the second support plate is subjected to the elastic force of the first spring, which in turn drives the second support plate towards the second gear. The movement of the second support plate drives the rotating rod, which in turn drives the first gear towards the second gear, thus securing the ribbon. The portion of the ribbon extending from the groove slides along the bottom of the roller. The rotating shaft can then be rotated to tighten the ribbon. This structure is beneficial for setting ribbon clips on both sides of the ribbon. By fixing the ribbon clips, it is easy to quickly find the ends of the ribbon, preventing the ribbon from being too long. If the ribbon ends cannot be found quickly and accurately, it will cause installation inconvenience. Furthermore, when positioning and installing the two ends of the ribbon, the first and second gears are simultaneously engaged, reducing installation difficulty.

[0021] 2. The printer's ribbon cartridge is equipped with a foolproof positioning device. The fifth support plate, driven by the rebound force of the second spring, moves the third support plate towards the limiting groove, causing the third support plate to engage with the first slot. This ensures that the first gear and the second gear maintain a distance, facilitating the removal of the old ribbon from between the first and second gears. After removing one side of the ribbon, pressing the second spring allows the removal of the other side of the ribbon from the groove. Once both sides of the ribbon are removed, pressing the first spring causes it to pop out quickly from the second slot, allowing the ribbon clip to be removed quickly. This enables the entire ribbon to be replaced rapidly.

[0022] 3. The printer's ribbon cartridge is accurately positioned and installed with a foolproof device. The rotation of the sixth support plate drives the card plate to rotate, allowing the card plate to slide along the inside of the eighth support plate at the top of the cover until it slides out from the bottom of the limiting plate. At this point, the cover plate can be quickly released from its fixation and limiting position. The structure is simple and easy to disassemble the cover plate. Compared with the original ribbon cartridge body, it avoids the need to use more force to pry open the cover plate from left to right, which is more laborious and can easily cause the cover plate to break if not operated properly, reducing the service life of the ribbon cartridge body. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the seventh support plate of the present invention;

[0025] Figure 3 For the present invention Figure 1 Enlarged view of the A-section structure;

[0026] Figure 4 For the present invention Figure 2 Enlarged view of the structure of section B;

[0027] Figure 5 For the present invention Figure 2 Enlarged view of the C-section structure;

[0028] Figure 6 This is a schematic diagram of the structure of the sixth support plate of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the rotating shaft of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the ribbon clip of the present invention;

[0031] Figure 9 For the present invention Figure 8 Enlarged view of the structure of part D;

[0032] Figure 10 This is a schematic diagram of the structure of the first protrusion of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure of the third spring of the present invention;

[0034] Figure 12 This is a schematic diagram of the structure of the roller of the present invention;

[0035] Figure 13 This is a schematic diagram of the structure of the rotating shaft of the present invention;

[0036] Figure 14 This is a schematic diagram of the structure of the second gear of the present invention.

[0037] In the diagram: 1. Ribbon box body; 2. Ribbon buckle; 3. Vertical plate; 4. First spring; 5. First support plate; 6. First protrusion; 7. Second protrusion; 8. Second support plate; 9. Rotating rod; 10. First gear; 11. Second gear; 12. Rotating shaft; 13. Telescopic rod; 14. First spring; 15. Third protrusion; 16. First slot; 17. Third support plate; 18. Second spring; 19. Fourth support plate; 20. Fifth support plate; 21. Square groove; 22. Strip groove; 23. Limiting groove; 24. Arc groove; 25. Sixth support plate; 26. Locking plate; 27. Limiting plate; 28. Seventh support plate; 29. ​​Second spring; 30. Cover plate; 31. Groove; 32. Roller; 33. Second slot; 34. Eighth support plate; 35. Round hole; 36. Protective plate; 37. Third spring. Detailed Implementation

[0038] This invention provides a foolproof device for accurately positioning and installing printer ribbon cartridges.

[0039] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 12 The fixing components include a cover plate 30, which is disposed on the top of the ribbon cartridge body 1. The top of the cover plate 30 has four arc-shaped grooves 24, and a retaining plate 26 is disposed inside the arc-shaped grooves 24. The cover plate 30 and the retaining plate 26 are slidably connected through the arc-shaped grooves 24. A sixth support plate 25 is fixedly connected to the top of the retaining plate 26. Four limiting plates 27 are fixedly connected to the inner wall of the ribbon cartridge body 1. The retaining plate 26 is disposed at the bottom of the limiting plate 27. By setting the retaining plate 26, the cover plate 30 can be fixed. Grooves 31 are provided on both sides of the ribbon cartridge body 1. A support frame is fixedly connected to the bottom of the ribbon cartridge body 1. A roller 32 is fixedly connected to the bottom of the support frame. By setting the roller 32, the ribbon can slide along the edge of the roller 32. Two round holes 35 are provided on the other side of the ribbon cartridge body 1. The two round holes 35 are symmetrically arranged. By setting the round holes 35, the ribbon cartridge body 1 can be easily installed and the incorrect installation of the ribbon cartridge body 1 can be prevented.

[0040] Specifically, first, align the two round holes 35 on one side of the ribbon cartridge body 1 with the shaft on the printer. This allows the ribbon cartridge body 1 to be accurately inserted into the printer. This simple and straightforward installation method facilitates the quick installation of the ribbon cartridge body 1. When it is necessary to replace the ribbon inside the ribbon cartridge body 1, the sixth support plate 25 can be rotated. The rotation of the sixth support plate 25 drives the locking plate 26 to rotate, allowing the locking plate 26 to slide along the inside of the eighth support plate 34 at the top of the cover plate 30 until the locking plate 26 slides out from the bottom of the limiting plate 27. At this point, the cover plate 30 can be quickly released from its fixation and limiting position. The structure is simple and easy to disassemble. Compared with the original ribbon cartridge body 1, it avoids the need to use more force to pry open the cover plate 30 from left to right, which is more laborious and can easily cause the cover plate 30 to break if not operated properly, reducing the service life of the ribbon cartridge body 1.

[0041] Please refer to it again. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14The system includes a ribbon cartridge body 1. Two first support plates 5 are fixedly connected inside the ribbon cartridge body 1. A second slot 33 is formed inside the first support plate 5. A ribbon clip 2 is located at the top of the first support plate 5. Two vertical plates 3 are fixedly connected to the bottom of the ribbon clip 2. A first spring 4 is fixedly connected to one side of each vertical plate 3. The first spring 4 and the first support plate 5 are engaged through the second slot 33. A limiting groove 23 is slidably connected to one side of one of the ribbon clips 2. A first protrusion 6 is fixedly connected to one side of the limiting groove 23. A second protrusion 7 is located on one side of the first protrusion 6. Both the first protrusion 6 and the second protrusion 7 have curved surfaces on one side. A second support plate 8 is fixedly connected. A telescopic rod 13 and a first spring 14 are fixedly connected to one side of the second support plate 8. The first spring 14 is located outside the telescopic rod 13. A rotating rod 9 is rotatably connected to the top of the second support plate 8. A first gear 10 is fixedly connected to the outside of the rotating rod 9. A second gear 11 is meshed with one side of the first gear 10. A rotating shaft 12 is fixedly connected inside the second gear 11. The rotating shaft 12 is rotatably connected to one side of the inside of the ribbon cartridge body 1. A release component is provided inside the ribbon buckle 2. A fixing component is provided at the top of the ribbon cartridge body 1. A limit component is provided inside the ribbon cartridge body 1. The release component also includes a fifth support plate. The fifth support plate 20 is fixedly connected to one side of the third support plate 17. A second spring 18 is fixedly connected to the other side of the fifth support plate 20 and is fixedly connected to one side of the ribbon clip 2. A fourth support plate 19 is fixedly connected to the top of the third support plate 17. By setting the second spring 18, the elastic force of the second spring 18 can be used to fix the limiting groove 23. After the limiting groove 23 is fixed, the position of the first protrusion 6 can be positioned, thus facilitating the creation of a gap between the first gear 10 and the second gear 11 for easy removal or installation of the ribbon. The limiting assembly includes a seventh support plate 28. A second spring plate 29 is provided on one side of the seventh support plate 28, which is fixedly connected to the bottom of the ribbon cartridge body 1. A protective plate 36 is fixedly connected to the bottom of the ribbon cartridge body 1. The second spring plate 29 is located between the ribbon cartridge body 1 and the protective plate 36. Another first support plate 5 is located between the protective plate 36 and the second spring plate 29. By setting the second spring plate 29, the ribbon can be attached. A sliding groove is opened inside the ribbon buckle 2. A third support plate 17 is located inside the sliding groove. The ribbon buckle 2 and the third support plate 17 are slidably connected through the sliding groove. By setting the sliding groove, the third support plate 17 can slide along the inside of the ribbon buckle 2.

[0042] Specifically, when the ribbon inside the ribbon cartridge body 1 needs to be replaced, pressing the first protrusion 6 downwards causes the limiting groove 23 to move downwards along the square groove 21. This causes the third spring 37 to extend. Since both the first protrusion 6 and the second protrusion 7 have curved surfaces on one side, the downward movement of the first protrusion 6 compresses the second protrusion 7 to one side. The movement of the second protrusion 7 to one side causes the second support plate 8 to move to one side. The movement of the second support plate 8 to one side compresses the telescopic rod 13 and the first spring 14 to retract. The movement of the second support plate 8 to one side causes the rotating rod 9 to move to one side. The movement of the rotating rod 9 to one side causes the first gear 10 to move to one side, causing the first gear 10 and the second gear 11 to move away from each other. At the same time as the limiting groove 23 moves downwards, it also causes the third protrusion 15 to move downwards. Since both the third protrusion 15 and the third support plate 17 have curved surfaces on one side... Then, the third protrusion 15 moves downward and presses the third support plate 17 to move to one side. The movement of the third support plate 17 to one side causes the second spring 18 to extend until the third support plate 17 is aligned with the first slot 16. At this time, the fifth support plate 20 is driven by the rebound force of the second spring 18 to move the third support plate 17 toward the limiting groove 23, so that the third support plate 17 is inserted into the first slot 16. This keeps the distance between the first gear 10 and the second gear 11. At this time, it is convenient to remove the old ribbon on one side from between the first gear 10 and the second gear 11. After the ribbon on one side is removed, the second spring 29 is pressed to remove the ribbon on the other side from inside the groove 31. After the ribbons on both sides are removed, the first spring 4 can be pressed. The first spring 4 can be quickly ejected from inside the second slot 33, so that the ribbon buckle 2 can be quickly removed upward. This allows the entire ribbon to be replaced quickly.

[0043] Please refer to it again. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14The release component includes a square groove 21, which is located on one side of the ribbon clip 2. The ribbon clip 2 and the limiting groove 23 are slidably connected through the square groove 21. A third spring 37 is fixedly connected to the top of the limiting groove 23 and is located inside the square groove 21. The third spring 37 is fixedly connected to the inner wall of the ribbon clip 2. A third protrusion 15 is fixedly connected to the bottom of the limiting groove 23. A first slot 16 is provided on one side of the limiting groove 23. A third support plate 17 is provided inside the first slot 16. The limiting groove 23 and the third support plate 17 are engaged through the first slot 16. One side of the third protrusion 15 and the third support plate 17 are both curved. The third support plate 17 is slidably connected inside the ribbon clip 2. By setting the third spring 37, the rebound force of the third spring 37 can drive the limiting groove 23 to move upward. The upward movement of the limiting groove 23 drives the first protrusion 6 to move upward. The upward movement of the first protrusion 6 can release the limiting position on the second protrusion 7, thereby causing the second support plate 8 to move towards the second gear 11 under the elastic force of the first spring 14. This ultimately drives the first gear 10 to move closer to the second gear 11, thereby securing the ribbon. The ribbon buckle 2 has a strip groove 22 inside, and the ribbon is placed inside the strip groove 22. The strip groove 22 is inclined and has a rectangular cross-sectional shape. By setting the strip groove 22, the ribbon can pass through the inside of the strip groove 22, thereby installing the two ends of the ribbon. The bottom of the ribbon box body 1 is fixedly connected to the eighth support plate 34. The eighth support plate 34 is fixedly connected to one end of the telescopic rod 13 and the first spring 14. By setting the eighth support plate 34, the telescopic rod 13 and the first spring 14 can be supported, making the operation of the telescopic rod 13 and the first spring 14 more stable.

[0044] Specifically, after quickly removing the old ribbon, following the same working principle as above, press the ribbon clip 2 downwards on the top of the first support plate 5. Make the same arrow markings at the corners of the ribbon clip 2 and the first support plate 5 to prevent mistaken insertion. When the ribbon clip 2 moves downwards, the first spring 4 engages with the second slot 33, quickly securing both sides of the ribbon. Simultaneously, the downward movement of the ribbon clip 2 causes the first protrusion 6 to move downwards, which in turn presses the second protrusion 7 to one side. The second protrusion 7 moves to one side, increasing the distance between the first gear 10 and the second gear 11. This facilitates the securing of the ribbon inside the strip groove 22 between the first gear 10 and the second gear 11. The ribbon on the other side is secured between the second spring 29 and the protective plate 36 in the same manner as described above. After the ribbons on both sides are installed, the fourth support plate 19 can be pulled to one side. The movement of the fourth support plate 19 to one side causes the third support plate 17 to move to one side. At this point, the third support plate 17 is removed from the first slot 16, and the limit is reached. When groove 23 loses the restraint of the third support plate 17, the restraining groove 23 is subjected to the rebound force of the third spring 37, which in turn drives the restraining groove 23 to move upward along the inside of the square groove 21. The upward movement of the restraining groove 23 drives the first protrusion 6 to move upward. After the first protrusion 6 moves upward, the second protrusion 7 loses the restraint of the first protrusion 6. At this time, the second support plate 8 is subjected to the elastic force of the first spring 14, which in turn drives the second support plate 8 to move towards the second gear 11. The movement of the second support plate 8 drives the rotating rod 9 to move, and the movement of the rotating rod 9 drives the first gear 10 to move towards the direction of the second gear 11. The ribbon can be tightened by moving the ribbon along the groove 31. The ribbon extends along the bottom of the roller 32. At this time, the rotating shaft 12 can be rotated to tighten the ribbon. This structure is beneficial because ribbon clips 2 are set on both sides of the ribbon. By fixing the ribbon clips 2, it is easy to quickly find the ends of the ribbon and avoid the ribbon being too long. If the ends of the ribbon cannot be found quickly and accurately, it will cause inconvenience in installation. At the same time, when positioning and installing the two ends of the ribbon, the first gear 10 and the second gear 11 are opened simultaneously, which reduces the difficulty of installation.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A printer ribbon cartridge accurate positioning and installation error prevention device, including a ribbon cartridge body (1), characterized in that: The ribbon cartridge body (1) is internally fixedly connected to two first support plates (5). The first support plate (5) has a second slot (33) inside. The top of the first support plate (5) is provided with a ribbon buckle (2). The bottom of the ribbon buckle (2) is fixedly connected to two vertical plates (3). The vertical plate (3) is fixedly connected to one side with a first spring piece (4). The first spring piece (4) and the first support plate (5) are engaged by the second slot (33). One of the ribbon buckles (2) on the first support plate (5) is slidably connected to a limiting groove (23). The limiting groove (23) is fixedly connected to one side with a first protrusion (6). The first protrusion (6) is provided to one side with a second protrusion (7). The first protrusion (6) and the second protrusion (7) are fixedly connected to each other. 7) One side is set as an arc surface. The second support plate (8) is fixedly connected to one side of the second protrusion (7). The telescopic rod (13) and the first spring (14) are fixedly connected to one side of the second support plate (8). The first spring (14) is set outside the telescopic rod (13). The top of the second support plate (8) is rotatably connected to a rotating rod (9). The outside of the rotating rod (9) is fixedly connected to a first gear (10). The first gear (10) is meshed with a second gear (11) on one side. The rotating shaft (12) is fixedly connected inside the second gear (11). The rotating shaft (12) is rotatably connected to one side of the inside of the ribbon box body (1). The ribbon buckle (2) is provided with a release component inside. The top of the ribbon box body (1) is provided with The ribbon cartridge body (1) is equipped with a fixing component and a limiting component inside. The releasing component includes a square groove (21), which is opened on one side of the ribbon buckle (2). The ribbon buckle (2) and the limiting groove (23) are slidably connected through the square groove (21). A third spring (37) is fixedly connected to the top of the limiting groove (23). The third spring (37) is located inside the square groove (21) and is fixedly connected to the inner wall of the ribbon buckle (2). A third protrusion (15) is fixedly connected to the bottom of the limiting groove (23). A first slot (16) is opened on one side of the limiting groove (23). A third support plate (17) is provided inside the first slot (16). (23) is engaged with the third support plate (17) through the first slot (16). The third protrusion (15) and one side of the third support plate (17) are both set as arc surfaces. The third support plate (17) is slidably connected to the inside of the ribbon buckle (2). The release component also includes a fifth support plate (20). The fifth support plate (20) is fixedly connected to one side of the third support plate (17). The other side of the fifth support plate (20) is fixedly connected to a second spring (18). The second spring (18) is fixedly connected to one side of the ribbon buckle (2). The top of the third support plate (17) is fixedly connected to a fourth support plate (19). The limiting component includes a seventh support plate (28). The seventh support plate (28) is fixedly connected to the bottom inside of the ribbon box body (1).A second spring (29) is provided on one side of the seventh support plate (28). A protective plate (36) is fixedly connected to the bottom of the inside of the ribbon cartridge body (1). The second spring (29) is located between the ribbon cartridge body (1) and the protective plate (36). Another first support plate (5) is located between the protective plate (36) and the second spring (29).

2. The printer ribbon cartridge accurate positioning and installation error-proof device according to claim 1, characterized in that: The fixing component includes a cover plate (30), which is disposed on the top of the ribbon box body (1). The top of the cover plate (30) has four arc-shaped grooves (24), and a retaining plate (26) is disposed inside the arc-shaped grooves (24). The cover plate (30) and the retaining plate (26) are slidably connected through the arc-shaped grooves (24). A sixth support plate (25) is fixedly connected to the top of the retaining plate (26). Four limiting plates (27) are fixedly connected to the inner wall of the ribbon box body (1), and the retaining plate (26) is disposed at the bottom of the limiting plate (27).

3. The printer ribbon cartridge accurate positioning and installation error-proof device according to claim 1, characterized in that: The ribbon buckle (2) has a strip groove (22) inside, and a ribbon is provided inside the strip groove (22). The strip groove (22) is inclined and the cross-sectional shape of the strip groove (22) is rectangular.

4. The printer ribbon cartridge accurate positioning and installation error-proof device according to claim 1, characterized in that: The bottom of the ribbon box body (1) is fixedly connected to an eighth support plate (34), which is fixedly connected to one end of the telescopic rod (13) and the first spring (14).

5. The printer ribbon cartridge accurate positioning and installation error-proof device according to claim 1, characterized in that: The ribbon box body (1) has grooves (31) on both sides, and a support frame is fixedly connected to the bottom of the ribbon box body (1), and a roller (32) is fixedly connected to the bottom of the support frame.

6. The printer ribbon cartridge accurate positioning and installation error-proof device according to claim 1, characterized in that: Two circular holes (35) are opened on the other side of the ribbon box body (1), and the two circular holes (35) are symmetrically arranged.

7. The printer ribbon cartridge accurate positioning and installation error-proof device according to claim 1, characterized in that: The ribbon buckle (2) has a sliding groove inside, and the third support plate (17) is disposed inside the sliding groove. The ribbon buckle (2) and the third support plate (17) are slidably connected through the sliding groove.

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