Flat cable automatic back-off structure of printer

Abstract

The invention belongs to the technical field of printers, and particularly relates to a flat cable automatic back-off structure of a printer, which comprises a fixed plate, a through groove is formed in the fixed plate, a roller is arranged on the back of the fixed plate and above the through groove, limiting grooves are formed in two sides of the roller, limiting discs are rotatably mounted in the limiting grooves, and a rotating column is fixedly mounted on one side of each limiting disc. One end of the rotating column penetrates through the limiting groove and is provided with a baffle disc and a baffle column; the two limiting rings are symmetrically arranged on the rolling wheel, a plurality of storage grooves are formed in the circumferential wall of the rolling wheel and located between the two limiting rings, and rubber strips are fixedly installed in the storage grooves; according to the flexible flat cable retracting device, the flexible flat cable retracts more smoothly by adopting the scheme of a compression spring and a roller, the flexible flat cable is recovered by adopting elastic force, damage to the flexible flat cable is reduced, automatic retraction of the flexible flat cable is realized, and the phenomena that the flexible flat cable is broken and a motion structure is blocked due to the fact that the flexible flat cable cannot move along with a lifting structure are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of printers, and particularly relates to an automatic retraction structure for the flexible cable of a printer. Background Art

[0002] The flexible cable of a printer generally refers to a flexible cable used to connect various components inside the printer (such as print heads, sensors, control boards, etc.). The flexible cable mainly plays the role of transmitting electrical signals or power, and is a key component for the normal operation of the printer; Signal transmission: The flexible cable transmits signals from the printer main board (control board) to other components (such as stepper motors, sensors, heating elements, etc.), ensuring that various operations of the printer can be executed normally; Power supply: It supplies power to each electronic component of the printer to ensure that each part can work properly.

[0003] Currently, the lifting and sliding structure of the printer has no automatic retraction structure for the flexible cable, and the flexible cable can only be pulled out by the lifting structure, but the flexible cable cannot be retracted in time; There is no automatic retraction structure for the flexible cable in the printer. The flexible cable cannot move with the lifting structure, and the flexible cable is prone to breakage, resulting in batch functional problems of the product, thus generating customer complaints and bringing negative impacts to the company. When the user uses it, they need to slide the lens up and down to take pictures and print. During the sliding process, if the flexible cable is not retracted in time, it is easy to cause the phenomenon of jamming the lifting structure, resulting in abnormal use and bringing a bad user experience to the user. In view of this, we propose an automatic retraction structure for the flexible cable of the printer. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic retraction structure for the flexible cable of a printer to solve the problems raised in the above background art.

[0005] In view of this, the present invention provides an automatic retraction structure for the flexible cable of a printer, including: A fixed plate, a through groove is opened on the fixed plate, a roller is provided on the back of the fixed plate and above the through groove, limiting grooves are opened on both sides of the roller, a limiting disk is rotatably installed in the limiting groove, a rotating column is fixedly installed on one side of the limiting disk, and one end of the rotating column penetrates through the limiting groove and is provided with a blocking disk and a blocking post; Two limiting rings, the two limiting rings are symmetrically arranged on the roller, a plurality of storage grooves are opened on the circumferential wall of the roller and between the two limiting rings, and a rubber strip is fixedly installed in the storage groove; An elastic component, the elastic component is located on the fixed plate and is used to control the two rotating columns to return to their original positions; A flexible cable, the flexible cable is arranged on the back of the fixed plate, and one end of the flexible cable passes through the top side of the roller and extends downward into the through groove.

[0006] In this technical solution, when the lifting structure in the printer drives one end of the flexible cable to move, one end of the flexible cable will extend and then retract along with the movement. The compression spring is squeezed and stretched downward when the flexible cable extends. When the flexible cable needs to retract, the compression spring will contract and pull the roller to drive the flexible cable to perform the retraction action, enabling the flexible cable to extend and retract smoothly, avoiding the problem of the flexible cable breaking, solving the problem that there is no automatic retraction structure for the flexible cable in the printer, the flexible cable cannot move along with the lifting structure, the flexible cable is easily broken, resulting in batch functional problems of the product, thus generating customer complaints and bringing negative impacts to the company. When the user uses it, they need to slide the lens up and down to take pictures and print. During the sliding process, if the flexible cable does not retract in time, it is easy to cause the phenomenon of jamming the lifting structure, resulting in abnormal use and bringing a bad user experience.

[0007] In the above technical solution, further, the width of the flexible cable is less than the length of the storage groove, and the flexible cable is located between the two limiting rings, and the length of the through groove is greater than the width of the flexible cable.

[0008] In this technical solution, when the lifting mechanism in the printer drives one end of the flexible cable to move, the flexible cable will not swing greatly on the roller and is also limited by the two limiting rings, improving the stability of the flexible cable during movement.

[0009] In the above technical solution, further, the elastic component includes: Two ring ones, the two ring ones are respectively sleeved on the two rotating columns. The ring one is located between the retaining disc and the retaining column. The ring one is connected to a ring two through a compression spring, and a ring three is sleeved on the ring two; Two ring fours, the two ring fours are respectively fixedly installed on the two ring threes. A ring groove is opened in the inner wall of the ring four, and a ring five is rotatably installed in the ring groove. A fixed cylinder connected to the fixed plate is sleeved in the ring five.

[0010] In this technical solution, the flexible cable passes through the roller, and the compression spring pulls the roller to realize the automatic retraction of the flexible cable. When the user uses the printer, they need to move the lifting mechanism for use. When the lifting mechanism moves, it needs to drive the flexible cable to move, so that the flexible cable needs to extend or retract. For example Figure 1 Adopting the roller method to drive the flexible cable to move reduces the damage to the flexible cable. One end of the compression spring is fixed to the fixed plate through the cooperation of the ring two, ring three, ring four and the cylinder, and the other end is connected to the rotating column through the ring one, and the rotating column is connected to the roller, and the flexible cable passes through the roller. When the lifting mechanism in the printer moves, it drives one end of the flexible cable to extend and then retract along with the movement. The compression spring is squeezed and stretched downward when the flexible cable extends. When the flexible cable needs to retract, the compression spring will contract and pull the roller to drive the flexible cable to perform the retraction action, enabling the flexible cable to extend and retract smoothly, avoiding the problem of the flexible cable breaking.

[0011] In the above technical solution, further, the first ring, the compression spring and the second ring are of an integrally formed structure, and the fourth ring and the third ring are of an integrally formed structure.

[0012] In this technical solution, the structures of the first ring, the compression spring and the second ring are ensured to be stable, and the structures of the fourth ring and the third ring are guaranteed to be stable.

[0013] In the above technical solution, further, the size of the ring groove is equal to that of the fifth ring, and the fifth ring and the cylinder are of an integrally formed structure.

[0014] In this technical solution, when the whole device is running, with the cooperation of the ring groove and the fifth ring, the fourth ring can rotate slightly on the cylinder, avoiding serious wear and improving the service life of the whole device.

[0015] In the above technical solution, further, the limiting disc, the rotating column, the retaining disc and the retaining post are of an integrally formed structure, and the roller and the limiting ring are of an integrally formed structure.

[0016] In this technical solution, the structures of the limiting disc, the rotating column, the retaining disc and the retaining post are ensured to be stable, and the structures of the roller and the limiting ring are guaranteed to be stable.

[0017] In the above technical solution, further, the cross-section of the limiting groove is of a T-shaped structure, and the rotating column is rotatably connected to the limiting groove.

[0018] In this technical solution, with the cooperation of the limiting groove, the rotating column and the limiting disc, the roller can rotate between the two rotating columns, avoiding damage to the cable by the roller, and the rubber strip has a certain elasticity, which can further reduce the damage to the cable and prevent the cable from breaking.

[0019] In the above technical solution, further, several of the storage grooves are arranged in an annular and equally spaced manner.

[0020] In this technical solution, it is ensured that the rubber strips in several storage grooves can all abut against the cable, reducing the damage to the cable.

[0021] In the above technical solution, further, it further includes: Two through holes, and the two through holes are respectively opened on the two retaining posts; Two L-shaped rods, the two L-shaped rods are symmetrically fixedly installed on the back of the fixed plate, and the tops of the two L-shaped rods respectively penetrate through the two through holes and are both fixedly installed with retaining pieces.

[0022] In this technical solution, when the entire roller moves up and down, it will also drive the limit disc, the rotating column, the retaining disc and the retaining column to move up and down together. The retaining column moves up and down on the L-shaped rod, which can ensure the structural stability of the retaining column, and thus will not cause the roller to shake back and forth or left and right, ensuring the normal operation of the overall device.

[0023] In the above technical solution, further, the L-shaped rod is slidably connected to the through hole, and the diameter of the retaining piece is larger than the diameter of the through hole.

[0024] In this technical solution, it is ensured that the retaining column can slide up and down normally on the L-shaped rod, and the retaining column is prevented from falling off the top end of the L-shaped rod.

[0025] The beneficial effects of the present invention are: 1. For the automatic rewinding structure of the cable of this printer, the cable passes through the roller, and the compression spring pulls the roller to realize the automatic rewinding of the cable. When the user uses the printer, the lifting mechanism needs to be moved for use. When the lifting mechanism moves, it needs to drive the cable to move, so that the cable needs to be extended or rewound. For example, Figure 1 Adopting the roller method to drive the cable movement reduces the damage to the cable. One end of the compression spring is fixed to the fixed plate through the cooperation of ring two, ring three, ring four and the cylinder, and the other end is connected to the rotating column through ring one, and the rotating column is connected to the connecting roller, and the cable passes through the roller. When the lifting mechanism in the printer moves, one end of the cable will extend and then retract along with the movement. When the cable extends, the compression spring is squeezed and stretched downward. When the cable needs to be rewound, the compression spring will contract and pull the roller to drive the cable to perform the rewinding action, enabling the cable to extend and retract smoothly and avoiding the problem of cable breakage.

[0026] 2. For the automatic rewinding structure of the cable of this printer, adopting the scheme of the compression spring and the roller makes the cable rewinding smoother, and the elastic force is used to recover the cable to reduce the damage to the cable.

[0027] 3. For the automatic rewinding structure of the cable of this printer, it realizes the automatic rewinding of the cable, and solves the problems of cable breakage and jamming of the moving structure caused by the cable being unable to move with the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the regional structural schematic diagram of the roller in the present invention; Figure 3 is the partial exploded structural schematic diagram of the present invention; Figure 4 is the sectional structural schematic diagram of the retaining column in the present invention.

[0029] The marks in the figure are shown as: 1. Fixed plate; 11. Through groove; 12. L-shaped rod; 13. Flap; 2. Roller; 21. Limit ring; 22. Storage groove; 23. Limit groove; 3. Rubber strip; 4. Limit disk; 41. Rotating column; 42. Stop disk; 43. Stop post; 44. Through hole; 5. Ring one; 51. Compression spring; 52. Ring two; 6. Ring three; 7. Ring four; 71. Ring groove; 8. Cylinder; 82. Ring five; 9. Cable. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that the terms used here are only for describing specific implementation modes, rather than intending to limit the exemplary implementation modes according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means that the associated objects before and after are in an "or" relationship.

[0033] It should be noted that in the description of this application, the orientation or positional relationships indicated by the orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description. Without contrary explanations, these orientation terms do not indicate or imply that the devices or components referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the protection scope of this application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0034] It should be noted that in this application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitations, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0035] Embodiment 1: Please refer to Figures 1-4 as shown in the figure. This embodiment provides an automatic retraction structure for the cable of a printer, including: A fixing plate 1, on which a through groove 11 is provided. Above the through groove 11 on the back of the fixing plate 1, there is a roller 2. Limiting grooves 23 are provided on both sides of the roller 2. A limiting disk 4 is rotatably installed in the limiting groove 23. A rotating column 41 is fixedly installed on one side of the limiting disk 4, and one end of the rotating column 41 passes through the limiting groove 23 and is provided with a blocking disk 42 and a blocking column 43; Two limiting rings 21, which are symmetrically arranged on the roller 2. A number of storage grooves 22 are provided on the circumferential wall of the roller 2 and between the two limiting rings 21. Rubber strips 3 are fixedly installed in the storage grooves 22; An elastic component, which is located on the fixing plate 1 and is used to control the two rotating columns 41 to return to their original positions; A cable 9, which is arranged on the back of the fixing plate 1, and one end of the cable 9 passes through the top side of the roller 2 and extends downward into the through groove 11.

[0036] As can be seen from this embodiment, when one end of the flexible cable 9 is driven by the lifting structure in the printer, one end of the flexible cable 9 will extend and then retract as it moves. When the flexible cable 9 extends, the compression spring 51 is squeezed and stretched downward. When the flexible cable 9 needs to retract, the compression spring 51 will contract and pull the roller 2 to drive the flexible cable 9 to retract, enabling the flexible cable 9 to stretch and contract smoothly, avoiding the problem of breakage of the flexible cable 9. This solves the problem that there is no automatic retraction structure for the flexible cable 9 in the printer, the flexible cable 9 cannot move with the lifting structure, the flexible cable 9 is prone to breakage, resulting in batch functional problems of the product, and thus generating customer complaints, which brings a negative impact to the company. When the user uses the printer, they need to slide the lens up and down to take pictures and print. During the sliding process, if the flexible cable 9 does not retract in time, it is easy to cause the phenomenon of jamming the lifting structure, resulting in abnormal use and bringing a bad user experience.

[0037] Embodiment 2: This embodiment provides an automatic retraction structure for the flexible cable of the printer. In addition to including the technical solutions of the above embodiment, it also has the following technical features: the width of the flexible cable 9 is less than the length of the storage groove 22, and the flexible cable 9 is located between two limiting rings 21, and the length of the through groove 11 is greater than the width of the flexible cable 9.

[0038] As can be seen from this embodiment, when the lifting structure in the printer drives one end of the flexible cable 9 to move, the flexible cable 9 will not swing significantly on the roller 2 and is also limited by the two limiting rings 21, improving the stability of the flexible cable 9 during movement.

[0039] Embodiment 3: This embodiment provides an automatic retraction structure for the flexible cable of the printer. In addition to including the technical solutions of the above embodiment, it also has the following technical features: the elastic component includes: Two rings 5, the two rings 5 are respectively sleeved on two rotating columns 41, the ring 5 is located between the baffle plate 42 and the baffle post 43, the ring 5 is connected with a ring 52 through a compression spring 51, and a ring 6 is sleeved on the ring 52; Two rings 7, the two rings 7 are respectively fixedly installed on the two rings 6, a ring groove 71 is opened in the inner wall of the ring 7, a ring 82 is rotatably installed in the ring groove 71, and a cylinder 8 fixed to the fixed plate 1 is sleeved in the ring 82.

[0040] As can be seen from this embodiment, the flexible cable 9 passes through the roller 2, and the compression spring 51 pulls the roller 2 to realize the automatic retraction of the flexible cable 9. When the user uses the printer, they need to move the lifting mechanism for use. When the lifting mechanism moves, it needs to drive the flexible cable 9 to move, so that the flexible cable 9 needs to extend or retract. For example Figure 1The roller 2 is used to drive the movement of the wire harness 9, reducing the damage to the wire harness 9. One end of the compression spring 51 is fixed to the fixed plate 1 through the cooperation of the ring two 52, the ring three 6, the ring four 7 and the cylinder 8, and the other end is connected to the rotating column 41 through the ring one 5. The rotating column 41 is connected to the connecting roller 2, and the wire harness 9 passes through the roller 2. When the lifting mechanism in the printer moves, one end of the wire harness 9 will extend and then retract as it moves. When the wire harness 9 extends, the compression spring 51 is squeezed and stretched downward. When the wire harness 9 needs to retract, the compression spring 51 will contract and pull the roller 2 to drive the wire harness 9 to perform a retraction action, enabling the wire harness 9 to extend and retract smoothly and avoiding the problem of breakage of the wire harness 9.

[0041] Embodiment 4: This embodiment provides an automatic retraction structure for the wire harness of a printer. In addition to including the technical solutions of the above embodiments, it also has the following technical features: The ring one 5, the compression spring 51 and the ring two 52 are of an integrally formed structure, and the ring four 7 and the ring three 6 are of an integrally formed structure.

[0042] It can be seen from this embodiment that the structure of the ring one 5, the compression spring 51 and the ring two 52 is ensured to be stable, and the structure of the ring four 7 and the ring three 6 is guaranteed to be stable.

[0043] Embodiment 5: This embodiment provides an automatic retraction structure for the wire harness of a printer. In addition to including the technical solutions of the above embodiments, it also has the following technical features: The sizes of the ring groove 71 and the ring five 82 are equal, and the ring five 82 and the cylinder 8 are of an integrally formed structure.

[0044] It can be seen from this embodiment that when the whole device is running, with the cooperation of the ring groove 71 and the ring five 82, the ring four 7 can rotate slightly on the cylinder 8, avoiding serious wear and improving the service life of the whole device.

[0045] Embodiment 6: This embodiment provides an automatic retraction structure for the wire harness of a printer. In addition to including the technical solutions of the above embodiments, it also has the following technical features: The limit disk 4, the rotating column 41, the stop disk 42 and the stop post 43 are of an integrally formed structure, and the roller 2 and the limit ring 21 are of an integrally formed structure.

[0046] It can be seen from this embodiment that the structure of the limit disk 4, the rotating column 41, the stop disk 42 and the stop post 43 is ensured to be stable, and the structure of the roller 2 and the limit ring 21 is guaranteed to be stable.

[0047] Embodiment 7: This embodiment provides an automatic retraction structure for the wire harness of a printer. In addition to including the technical solutions of the above embodiments, it also has the following technical features: The cross-section of the limit groove 23 is of a T-shaped structure, and the rotating column 41 is rotatably connected to the limit groove 23.

[0048] It can be seen from this embodiment that, with the cooperation of the limiting groove 23, the rotating column 41 and the limiting disc 4, the roller 2 can rotate between the two rotating columns 41, avoiding damage to the flexible cable 9 by the roller 2. Moreover, the rubber strip 3 has a certain elasticity, which can further reduce the damage to the flexible cable 9 and prevent the flexible cable 9 from breaking.

[0049] Embodiment 8: This embodiment provides an automatic retracting structure for the flexible cable of a printer. In addition to including the technical solutions of the above embodiments, it also has the following technical features: a number of storage grooves 22 are arranged in an annular and equally spaced manner.

[0050] It can be seen from this embodiment that it is ensured that the rubber strips 3 in the number of storage grooves 22 can all abut against the flexible cable 9, reducing the damage to the flexible cable 9.

[0051] Embodiment 9: This embodiment provides an automatic retracting structure for the flexible cable of a printer. In addition to including the technical solutions of the above embodiments, it also has the following technical features: it further includes: Two through holes 44, which are respectively opened on two retaining posts 43; Two L-shaped rods 12, which are symmetrically and fixedly installed on the back surface of the fixing plate 1, and the tops of the two L-shaped rods 12 respectively penetrate through the two through holes 44 and are both fixedly installed with retaining pieces 13.

[0052] It can be seen from this embodiment that when the entire roller 2 moves up and down, it will also drive the limiting disc 4, the rotating column 41, the retaining disc 42 and the retaining post 43 to move up and down together. And the retaining post 43 moves up and down on the L-shaped rod 12, which can ensure the structural stability of the retaining post 43, and thus will not cause the roller 2 to shake back and forth or left and right, ensuring the normal operation of the overall device.

[0053] Embodiment 10: This embodiment provides an automatic retracting structure for the flexible cable of a printer. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the L-shaped rod 12 is slidably connected to the through hole 44, and the diameter of the retaining piece 13 is greater than the diameter of the through hole 44.

[0054] It can be seen from this embodiment that it is ensured that the retaining post 43 can slide up and down normally on the L-shaped rod 12, avoiding the retaining post 43 falling off from the top of the L-shaped rod 12.

[0055] Working principle: The flexible cable 9 passes through the roller 2, and the compression spring 51 pulls the roller 2 to realize the automatic retraction of the flexible cable 9. When the user uses the printer, the lifting mechanism needs to be moved for use. When the lifting mechanism moves, it needs to drive the flexible cable 9 to move, so that the flexible cable 9 needs to extend or retract, as Figure 1The roller 2 is adopted to drive the flexible cable 9 to move, reducing the damage to the flexible cable 9. One end of the compression spring 51 is fixed to the fixed plate 1 through the cooperation of the ring two 52, the ring three 6, the ring four 7 and the cylinder 8, and the other end is connected to the rotating column 41 through the ring one 5. The rotating column 41 is connected to the connecting roller 2, and the flexible cable 9 passes through the roller 2. When the lifting mechanism in the printer moves, one end of the flexible cable 9 will extend and then retract along with the movement. When the flexible cable 9 extends, the compression spring 51 is squeezed and stretched downward. When the flexible cable 9 needs to retract, the compression spring 51 will contract and pull the roller 2 to drive the flexible cable 9 to perform a retracting action, enabling the flexible cable 9 to extend and retract smoothly and avoiding the problem of breakage of the flexible cable 9.

[0056] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. The automatic cable retraction structure of the printer is characterized by: include: A fixed plate (1), wherein a through slot (11) is provided on the fixed plate (1), a roller (2) is provided on the back side of the fixed plate (1) and above the through slot (11), limiting slots (23) are provided on both sides of the roller (2), a limiting plate (4) is rotatably mounted in the limiting slot (23), a rotating column (41) is fixedly mounted on one side of the limiting plate (4), and one end of the rotating column (41) passes through the limiting slot (23) and is provided with a stop plate (42) and a stop column (43); Two limiting rings (21), the two limiting rings (21) being symmetrically arranged on the roller (2), a plurality of storage grooves (22) being provided on the circumferential wall of the roller (2) and between the two limiting rings (21), and a rubber strip (3) being fixedly installed in the storage grooves (22); An elastic component, the elastic component being located on the fixed plate (1) and being used to control the two rotating columns (41) to return to their original positions; A cable (9) is arranged on the back of the fixed plate (1), and one end of the cable (9) passes through the top side of the roller (2) and extends downward into the through groove (11).

2. The automatic cable retraction structure of the printer according to claim 1, characterized in that: The width of the cable (9) is smaller than the length of the storage slot (22), the cable (9) is located between two limiting rings (21), and the length of the through slot (11) is greater than the width of the cable (9).

3. The automatic cable retraction structure of the printer according to claim 1, characterized in that: The elastic component comprises: Two rings (5), the two rings (5) are respectively sleeved on two rotating columns (41), the ring (5) is located between the baffle plate (42) and the baffle column (43), the ring (5) is connected to the ring (52) via a compression spring (51), and the ring (6) is sleeved on the ring (52); Two rings (7), the two rings (7) are fixedly mounted on the two rings (6) respectively, an annular groove (71) is provided in the inner wall of the ring (7), a ring (82) is rotatably mounted in the annular groove (71), and a cylinder (8) fixed to the fixed plate (1) is sleeved in the ring (82).

4. The automatic cable retraction structure of the printer according to claim 3, characterized in that: The ring one (5), the compression spring (51) and the ring two (52) are an integrally formed structure, and the ring four (7) and the ring three (6) are an integrally formed structure.

5. The automatic cable retraction structure of the printer according to claim 3, characterized in that: The ring groove (71) and the ring five (82) are of equal size, and the ring five (82) and the cylinder (8) are an integrally formed structure.

6. The automatic cable retraction structure of the printer according to claim 1, characterized in that: The limiting plate (4), the rotating column (41), the blocking plate (42) and the blocking column (43) are an integrally formed structure, and the roller (2) and the limiting ring (21) are an integrally formed structure.

7. The automatic cable retraction structure of a printer according to claim 1, characterized in that: The cross section of the limiting groove (23) is a T-shaped structure, and the rotating column (41) is rotatably connected to the limiting groove (23).

8. The automatic cable retraction structure of a printer according to claim 1, characterized in that: The plurality of storage slots (22) are arranged in a ring shape at equal intervals.

9. The automatic cable retraction structure of a printer according to claim 1, characterized in that: Also includes: Two through holes (44), the two through holes (44) being respectively formed on the two blocking pillars (43); Two L-shaped rods (12) are symmetrically fixedly mounted on the back of the fixing plate (1), and the top ends of the two L-shaped rods (12) respectively penetrate the two through holes (44) and are both fixedly mounted with blocking sheets (13).

10. The automatic cable retraction structure of a printer according to claim 1, characterized in that: The L-shaped rod (12) is slidably connected to the through hole (44), and the diameter of the blocking sheet (13) is greater than the diameter of the through hole (44).

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