Printing device for flat optical cable

Abstract

The invention belongs to the technical field of cable printing, and particularly discloses a printing device for a flat optical cable, which comprises a rack body, and an optical cable conveying mechanism, an optical cable stabilizing mechanism and a printing mechanism which are mounted on the rack body, the optical cable conveying mechanism comprises at least two sets of conveying assemblies, the two sets of conveying assemblies work cooperatively to achieve conveying of the flat optical cable, and the optical cable stabilizing mechanism and the printing mechanism are located between the two sets of conveying assemblies; the optical cable stabilizing mechanism comprises a self-adaptive pressing groove and a supporting roller. The flat optical cable sequentially passes through the self-adaptive pressing groove and the supporting roller, and a printing segment is formed between the self-adaptive pressing groove and the supporting roller. The printing mechanism comprises a jet printing head and a fine adjustment assembly, the fine adjustment assembly is installed on the rack body, and the jet printing head is installed at the output end of the fine adjustment assembly and located over the printing section. Through the structural design, the stability and printing quality of the printing process of the flat optical cable are remarkably improved.

Description

Technical Field

[0001] This application belongs to the field of cable printing technology, and more specifically, relates to a printing device for flat optical cables. Background Technology

[0002] During the cable production process, it is necessary to print text online on the surface of the cable sheath simultaneously. Information such as model, specifications and standards are printed on the sheath through laser, inkjet or embossing processes to meet identification requirements.

[0003] The printing quality of cables is mainly affected by the stability of the cable during the printing process. Traditional cables are often transported using roller structures. Due to the large width-to-thickness ratio and low rigidity of flat cables, when transported using roller structures, they are prone to vertical jumping and lateral deviation during high-speed transport, resulting in blurred and misaligned printed characters and a decrease in the yield of finished products. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this application provides a printing device for flat optical cables, aiming to solve the problem that flat optical cables are prone to shaking during high-speed transmission, resulting in blurred or misaligned printed characters and affecting product quality.

[0005] This application provides a printing device for flat optical cables, specifically including a frame body and an optical cable conveying mechanism, an optical cable stabilizing mechanism, and a printing mechanism mounted on the frame body. The optical cable conveying mechanism includes at least two sets of conveying components, which work together to convey the flat optical cable. The optical cable stabilizing mechanism and the printing mechanism are located between the two sets of conveying components, forming a printing station. The optical cable stabilizing mechanism includes an adaptive clamping groove and a support roller, which are sequentially mounted on the frame body along the conveying direction of the flat optical cable. The flat optical cable passes through the adaptive clamping groove and the support roller sequentially, forming a printing field between the adaptive clamping groove and the support roller. The printing mechanism includes a printing head and a fine-tuning component, which is mounted on the frame body. The printing head is mounted at the output end of the fine-tuning component and located directly above the printing field.

[0006] Compared with the prior art, the printing device for flat optical cables in this application effectively suppresses the shaking of the flat optical cables during high-speed transport by setting an adaptive clamping groove and a support roller between two sets of conveying components to form a micro-tension buffer, providing a relatively stable printing field for the print head and ensuring clear characters without misalignment; at the same time, the fine-tuning component can realize online calibration of the print head, further improving the consistency of printing, and can achieve the beneficial effect of significantly improving the stability and printing quality of the printing process of flat optical cables.

[0007] As a further preferred embodiment, the adaptive clamping groove includes a groove body and a top cover. The groove body is fixedly connected to the frame body and has a groove on its upper surface for passing through a flat optical cable. The lower surface of the top cover is provided with a clamping strip for pressing the flat optical cable to the bottom of the groove.

[0008] As a further preferred embodiment, the lower surface of the upper cover is provided with a mounting groove for installing the clamping strip. The clamping strip is slidably connected to the mounting groove in a direction perpendicular to the lower surface of the upper cover. A plurality of springs are fixedly connected between the clamping strip and the inner wall of the mounting groove, and the axial direction of the springs is the same as the sliding direction of the clamping strip.

[0009] As a further preferred embodiment, the lower surface of the upper cover is fixedly connected with a plurality of positioning posts, and the upper surface of the groove is provided with a positioning groove that is adapted to be inserted into the positioning posts.

[0010] As a further preferred embodiment, the outer periphery of the support roller is provided with a limiting groove for embedding a flat optical cable.

[0011] As a further preferred embodiment, the printing device for flat optical cables further includes a negative pressure balancing mechanism, which is disposed on the frame body and located below the printing field.

[0012] As a further preferred embodiment, the negative pressure balancing mechanism includes a negative pressure box, a pressure sensor, and a negative pressure air source. The negative pressure box and the negative pressure air source are both fixedly installed on the frame body. The negative pressure box has a cavity inside and several openings communicating with the cavity at the top. The negative pressure air source communicates with the cavity, and the pressure sensor is fixedly installed on the top of the negative pressure box.

[0013] As a further preferred embodiment, the fine-tuning component includes a Y-axis fine-tuning component and a Z-axis fine-tuning component. The Y-axis fine-tuning component is mounted on the frame body, and the Z-axis fine-tuning component is mounted on the output end of the Y-axis fine-tuning component to achieve position adjustment in the Y-axis direction. The print head is fixedly mounted on the output end of the Z-axis fine-tuning component to achieve position adjustment in the Z-axis direction.

[0014] As a further preferred embodiment, the fine-tuning component also includes a camera and an image processing module mounted on the printhead, wherein the camera and the image processing module are electrically connected and face the nozzle of the printhead.

[0015] As a further preferred embodiment, a drying unit is provided at the groove inlet of the adaptive pressing groove, and a plasma treatment unit is provided at the groove outlet of the adaptive pressing groove.

[0016] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages: 1. In this application, between two sets of conveying components, an adaptive clamping groove applies constant and adaptively adjustable damping to the flat optical cable, instantly decelerating the flat optical cable and forming a taut and stable printing field. The support roller that follows supports the end of the flat optical cable with a limiting groove. At the same time, a negative pressure balancing mechanism provides uniform adsorption below the printing field. Together, the three form a micro-tension buffer, which reduces the lateral sway and longitudinal vibration of the flat optical cable during high-speed conveying, provides a stable printing field for the print head, and ensures clear characters without misalignment.

[0017] 2. In this application, the clamping strip can float up and down with the thickness of the flat optical cable under the action of the spring. The width design of the suction hole of the negative pressure box array and the limiting groove of the support roller are both reserved with reasonable gaps, which can firmly restrain the cable without causing excessive compression. At the same time, the fine adjustment component can compensate the position deviation of the print head online in real time under the feedback drive of the camera and image processing module, thereby improving the printing accuracy.

[0018] 3. Before the cable enters the adaptive compression groove, the drying unit first treats the surface of the flat optical cable to remove moisture, dust and release agent residue. After the cable is removed from the adaptive compression groove, the plasma treatment unit further treats the surface of the flat optical cable to enhance ink adhesion, making the imprint firm and the edges sharp, thus comprehensively improving the reliability of the marking. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the printing device for flat optical cables provided in the embodiments of this application; Figure 2 This is a schematic diagram of the overall structure of the tank provided in the embodiment of this application; Figure 3 This is a schematic diagram of the overall structure of the upper cover provided in an embodiment of this application; Figure 4 This is a schematic cross-sectional view of the adaptive clamping groove provided in an embodiment of this application; Figure 5 This is a schematic diagram of the overall structure of the printing mechanism provided in the embodiments of this application; Figure 6 This is a schematic diagram of the overall structure of the negative pressure balancing mechanism provided in the embodiments of this application.

[0020] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Frame body; 2. Optical cable conveying mechanism; 21. First conveying component; 22. Second conveying component; 3. Optical cable stabilizing mechanism; 31. Adaptive clamping groove; 311. Groove body; 312. Top cover; 313. Groove; 314. Clamping strip; 315. Mounting groove; 316. Spring; 317. Positioning post; 318. Positioning groove; 32. Support roller; 33. Drying unit; 34. Plasma treatment unit; 4. Printing mechanism; 41. Printing head; 42. Fine-tuning component; 421. Y-axis fine-tuning component; 422. Z-axis fine-tuning component; 423. Camera; 424. Image processing module; 5. Negative pressure balancing mechanism; 51. Negative pressure box; 52. Pressure sensor; 53. Negative pressure air source; 6. Flat optical cable. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] Reference Figure 1 This application discloses a printing device for flat optical cables, comprising a frame body 1 and an optical cable conveying mechanism 2, an optical cable stabilizing mechanism 3, a printing mechanism 4, and a negative pressure balancing mechanism 5 mounted on the frame body 1. The frame body 1 is constructed of welded aluminum alloy profiles and is fixed to the ground with anchor bolts to ensure the stability of each mechanism during operation. The optical cable conveying mechanism 2 includes at least two sets of conveying components. The optical cable stabilizing mechanism 3 and the printing mechanism 4 are located between the two sets of conveying components, forming a printing station. The two sets of conveying components are arranged horizontally left and right, and are respectively a first conveying component 21 and a second conveying component 22 along the conveying direction of the flat optical cable 6. The first conveying component 21 and the second conveying component 22 work together to convey the flat optical cable 6. The frame body 1 is arranged sequentially along the conveying direction of the flat optical cable 6, with the center lines of the four components coinciding to form a straight printing channel.

[0023] Specifically, the first conveying assembly 21 and the second conveying assembly 22 have the same structure, both consisting of a servo motor, a driving wheel, a driven wheel, and an encoder. The servo motor, driving wheel, and driven wheel are all mounted on the frame body 1. The servo motor is directly connected to the driving wheel through a reducer, and the encoder is mounted on the shaft end of the driven wheel to provide real-time feedback on the actual displacement of the flat optical cable 6. The servo motors of the two conveying assemblies are driven by the same controller to achieve speed synchronization. The speed difference can be controlled within ±0.1% to prevent the flat optical cable 6 from being stretched or piled up between the two assemblies.

[0024] In this embodiment, the optical cable stabilization mechanism 3 is located between the first conveying component 21 and the second conveying component 22. It includes an adaptive pressing groove 31 and a support roller 32. The adaptive pressing groove 31 and the support roller 32 are sequentially installed on the frame body 1 along the conveying direction of the flat optical cable 6. The flat optical cable 6 passes through the adaptive pressing groove 31 and the support roller 32 in sequence and forms an printing field between the adaptive pressing groove 31 and the support roller 32. The adaptive pressing groove 31 generates damping, and the flat optical cable 6 passes through the adaptive pressing groove 31 to reduce the conveying speed of the printing field. The support roller 32 provides rigid support for the end of the printing field. The flat optical cable 6 first enters the adaptive pressing groove 31 and then passes through the support roller 32, forming a straight and stable printing field between the two, which facilitates subsequent printing and can effectively improve the printing quality.

[0025] Reference Figure 2-Figure 4 Specifically, the adaptive clamping groove 31 includes a groove body 311 and a top cover 312. The groove body 311 is fixedly connected to the frame body 1 and its upper surface has a groove 313 for the flat optical cable 6 to pass through. The groove body 311 is fixedly installed on the frame body 1 with bolts. Its top surface has a rectangular groove 313 along the cable direction. The width of the groove 313 is 0.15mm-0.2mm wider than the flat optical cable 6, and the depth is 2-3 times the thickness of the cable, so that the flat optical cable 6 can be completely located inside the groove 313.

[0026] Furthermore, a number of positioning posts 317 are fixedly connected to the lower surface of the upper cover 312, and a positioning groove 318 that is adapted to be inserted into the upper surface of the groove 311 is provided. The upper cover 312 and the groove 311 are openable and closable. Two positioning posts 317 are provided on each side of the lower surface of the upper cover 312, which are inserted into the corresponding positioning grooves 318 on the upper surface of the groove 311. The ends of the positioning posts 317 and the positioning grooves 318 are chamfered to facilitate quick opening and closing. The lower surface of the upper cover 312 is provided with a clamping strip 314 for pressing the flat optical cable 6 against the bottom of the groove 313. A mounting groove 315 is also provided for mounting the clamping strip 314. The clamping strip 314 is slidably connected to the mounting groove 315 in a direction perpendicular to the lower surface of the upper cover 312. Several springs 316 are fixedly connected between the clamping strip 314 and the inner wall of the mounting groove 315. The axial direction of the springs 316 is the same as the sliding direction of the clamping strip 314. The clamping strip 314 is made of polyoxymethylene or hard rubber, has a rectangular cross-section, and its length is equal to the length of the groove 313. The clamping strip 314 slides vertically via two guide pins. The clamping strip 314 is flush with the top wall of the mounting groove 315. Three to four compression springs 316 are evenly arranged in the groove. The springs 316 have a wire diameter of 0.5 mm and a free length of 10 mm. When compressed by 2 mm to 3 mm, they generate a constant pressure of 0.5 N to 1 N. The axis of the springs 316 coincides with the sliding direction, ensuring that the clamping force is always vertically downward and adaptively adjusted according to the thickness of the flat optical cable 6. The upper cover 312 is downward due to its own weight, which enables the clamping strip 314 to apply pressure to the flat optical cable 6. The inner wall of the groove 313 and the surface of the clamping strip 314 are coated with a protective coating to avoid damage to the surface of the flat optical cable 6. In another feasible embodiment, the upper cover 312 is connected to the groove 311 by multiple screws.

[0027] Furthermore, the support roller 32 is mounted on the frame body 1 via a seated bearing. A limiting groove for embedding the flat optical cable 6 is provided around the outer periphery of the support roller 32. The width of the limiting groove is 0.1 mm away from the width of the cable, and the groove depth is about twice the thickness of the cable, ensuring that the end of the printing field is stably supported so that the printing mechanism 4 can print on the printing field.

[0028] Reference Figure 1To improve the printing effect of the flat optical cable 6, in this embodiment, a drying unit 33 is fixedly installed at the inlet of the groove 313 of the adaptive clamping groove 31, and a plasma treatment unit 34 is fixedly installed at the outlet of the groove 313 of the adaptive clamping groove 31. Since the flat optical cable needs to pass through a water tank for cooling after being covered with a sheath, its surface needs to be kept dry before printing. The drying unit 33 is a U-shaped air knife, which is fixedly connected to the upper cover 312 with its opening facing the flat optical cable 6. The U-shaped air knife is connected to an external air source, so that the outlet air velocity of the U-shaped air knife is 60m / s-80m / s, which can remove free water vapor, release agent residue and particles from the flat optical cable 6 within 10ms. A 40μm sintered filter element is installed at the air inlet of the U-shaped air knife to prevent oil and water in the compressed air in the U-shaped air knife from secondary contaminating the cable surface. The plasma treatment unit 34 is a dielectric barrier discharge (DBD) plasma module, which is fixedly connected to the upper cover 312 with the plasma head facing the flat optical cable 6. This plasma module is a common module in the field and will not be described in detail here. The processing time of the flat optical cable 6 through the plasma treatment unit 34 is t=L / v, where L=25mm (effective discharge length) and v is the cable linear velocity. When v=120m / min, t≈12.5ms, which is sufficient to increase the surface energy of the cable from 32mN / m to ≥48mN / m. The surface energy of ordinary polyethylene (PE) plastic is 30mN / m-34mN / m, which is a low surface energy material, and ink is difficult to adhere. After plasma treatment, the surface energy of PE can be increased to more than 48mN / m, and the ink can spread and adhere better. Before entering the groove 313, the flat optical cable 6 passes through the drying unit 33 to remove surface moisture and loose contaminants. It then enters the pressing section of the adaptive pressing groove 31 and passes through the plasma treatment unit 34 within 10 ms. The surface is activated and polar groups are introduced, completing the deceleration, positioning, and printing process. Actual measurements show that at a linear speed of 120 m / min, the ink's 60° contact angle decreases from 42° to 12°, achieving ISO 2409 grade 0 adhesion, and the character edges are clear with no ink splatter. Therefore, in this application, the flat optical cable 6 can be designed to reduce the conveying speed of the printing field to a linear speed of 120 m / min after passing through the adaptive pressing groove 31.

[0029] Reference Figure 6In this embodiment, the negative pressure balancing mechanism 5 is installed on the frame body 1 and located below the printing field to actively suppress the printing field. The negative pressure balancing mechanism 5 includes a negative pressure box 51, a pressure sensor 52, and a negative pressure air source 53. Both the negative pressure box 51 and the negative pressure air source 53 are fixedly installed on the frame body 1. The negative pressure box 51 has a cavity inside, and the top of the negative pressure box 51 has several openings communicating with the cavity. The openings are arranged in an array along the conveying direction of the flat optical cable 6 to form an array of adsorption holes. The negative pressure air source 53 is connected to the cavity. The negative pressure air source 53 uses a miniature vacuum pump and is connected to the quick-connect connector on the side wall of the negative pressure box 51 through a silicone tube. The pressure sensor 52 is fixedly installed on the top of the negative pressure box 51. The pressure sensor 52 is attached to the top of the negative pressure box 51 and directly detects the negative pressure value between the suction hole area and the lower surface of the flat optical cable 6. Through closed-loop control, the negative pressure at the array suction hole is kept constant, thereby maintaining a uniform adsorption force on the flat optical cable 6. This further enables speed adjustment of the printing field and avoids deviation in the printing spacing caused by tension fluctuations in the printing field.

[0030] Reference Figure 1 and Figure 5 To achieve accurate printing on the flat optical cable 6, the printing mechanism 4 includes a print head 41 and a fine-tuning component 42. The fine-tuning component 42 is mounted on the frame body 1, and the print head 41 is mounted at the output end of the fine-tuning component 42 and located directly above the printing field, i.e., the printing mechanism 4 is located between the adaptive clamping groove 31 and the support roller 32. Specifically, the fine-tuning component 42 includes a Y-axis fine-tuning component 421 and a Z-axis fine-tuning component 422. With the conveying direction of the flat optical cable 6 as the X-axis direction, the Y-axis fine-tuning component 421 is mounted on the frame body 1, and the Z-axis fine-tuning component 422 is mounted at the output end of the Y-axis fine-tuning component 421 to achieve position adjustment in the Y-axis direction. The print head 41 is fixedly mounted at the output end of the Z-axis fine-tuning component 422 to achieve position adjustment in the Z-axis direction. Specifically, the Y-axis fine-tuning component 421 is a first precision slide, including an L-shaped bracket, a ball screw, an output slider, and a stepper motor. The L-shaped bracket is fixedly connected to the frame body 1, the ball screw is rotatably connected to the L-shaped bracket, the stepper motor is fixedly mounted on the L-shaped bracket, and the ball screw is coaxially fixedly connected to the output shaft of the stepper motor. The output slider is sleeved on the ball screw and threadedly connected to it. When the stepper motor is started, it drives the ball screw to rotate, causing the output slider to slide along the Y-axis. The Z-axis fine-tuning component 422 is a second precision slide, and its structure is the same as that of the first precision slide. It is side-mounted on the output slider of the first precision slide, and its movement direction is vertical. The print head 41 is fixedly mounted on the output slider of the second precision slide. The print head 41 is an industrial piezoelectric print head, which is locked onto the output slider of the second precision slide by screws, and its nozzle faces the printing field of the flat optical cable 6.

[0031] Furthermore, the fine-tuning component 42 also includes a camera 423 and an image processing module 424 mounted on the print head 41. The camera 423 and the image processing module 424 are electrically connected and face the nozzle of the print head 41, realizing real-time and accurate capture of the printing position of the flat optical cable 6. This not only improves the accuracy of printing but also reduces manual intervention and errors. The image processing module 424 performs preprocessing, feature extraction, edge recognition, and template matching on the image to obtain the deviation value of the current character or positioning mark relative to the set reference. The deviation value is converted into a pulse signal after algorithm calculation, which synchronously drives the stepper motors of the Y-axis fine-tuning component 421 and the Z-axis fine-tuning component 422 to complete position compensation within a millisecond cycle, realizing calibration while running.

[0032] When the printing device for flat optical cables used in this application is used, the flat optical cable 6 is fed in at a constant speed by two sets of synchronous conveying components. First, it passes through the drying unit 33 to blow away surface moisture and particles, and then enters the adaptive pressing groove 31. The pressing bar 314 adaptively presses the cable and generates damping under the action of the spring 316, so that the printing field speed is reduced and kept straight. Then, it passes through the plasma treatment unit 34 to increase the surface energy. The negative pressure balancing mechanism 5 applies a constant negative pressure to the printing field through the array suction holes to further suppress shaking. The limiting groove of the support roller 32 provides rigid support for the end of the printing field, forming a stable printing platform. The print head 41 is mounted on the fine adjustment component 42. The camera 423 captures the image in real time and controls the fine adjustment component 42 through the image processing module 424 to adjust the print head position to ensure that the characters are accurately, clearly and without misalignment printed on the surface of the flat optical cable 6.

[0033] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0034] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A printing device for flat optical cables, characterized in that, It includes a rack body (1) and an optical cable delivery mechanism (2), an optical cable stabilization mechanism (3) and a printing mechanism (4) installed on the rack body (1); The optical cable conveying mechanism (2) includes at least two sets of conveying components. The two sets of conveying components work together to convey the flat optical cable (6). The optical cable stabilizing mechanism (3) and the printing mechanism (4) are located between the two sets of conveying components and together form the printing station. The optical cable stabilization mechanism (3) includes an adaptive clamping groove (31) and a support roller (32). The adaptive clamping groove (31) and the support roller (32) are sequentially installed on the frame body (1) along the conveying direction of the flat optical cable (6). The flat optical cable (6) passes through the adaptive clamping groove (31) and the support roller (32) in sequence and forms an imprint field between the adaptive clamping groove (31) and the support roller (32). The printing mechanism (4) includes a print head (41) and a fine-tuning component (42). The fine-tuning component (42) is mounted on the frame body (1), and the print head (41) is mounted on the output end of the fine-tuning component (42) and located directly above the printing field.

2. The printing device for flat optical cables as described in claim 1, characterized in that, The adaptive clamping groove (31) includes a groove body (311) and a top cover (312). The groove body (311) is fixedly connected to the frame body (1) and its upper surface is provided with a groove (313) for the flat optical cable (6) to pass through. The lower surface of the top cover (312) is provided with a clamping strip (314) for pressing the flat optical cable (6) to the bottom of the groove (313).

3. A printing device for flat optical cables as described in claim 2, characterized in that, The lower surface of the upper cover (312) is provided with a mounting groove (315) for mounting the clamping strip (314). The clamping strip (314) is slidably connected in the mounting groove (315) in a direction perpendicular to the lower surface of the upper cover (312). A plurality of springs (316) are fixedly connected between the clamping strip (314) and the inner wall of the mounting groove (315). The axial direction of the springs (316) is the same as the sliding direction of the clamping strip (314).

4. A printing device for flat optical cables as described in claim 2, characterized in that, The lower surface of the upper cover (312) is fixedly connected with a plurality of positioning posts (317), and the upper surface of the groove (311) is provided with positioning grooves (318) that are adapted to be inserted into the positioning posts (317).

5. A printing device for flat optical cables as described in claim 1, characterized in that, The outer periphery of the support roller (32) is provided with a limiting groove for embedding a flat optical cable (6).

6. A printing device for flat optical cables as described in claim 1, characterized in that, The printing device for flat optical cables also includes a negative pressure balancing mechanism (5), which is disposed on the frame body (1) and located below the printing field.

7. A printing device for flat optical cables as described in claim 6, characterized in that, The negative pressure balancing mechanism (5) includes a negative pressure box (51), a pressure sensor (52), and a negative pressure air source (53). The negative pressure box (51) and the negative pressure air source (53) are both fixedly installed on the frame body (1). The negative pressure box (51) has a cavity inside and several openings communicating with the cavity at the top. The negative pressure air source (53) communicates with the cavity. The pressure sensor (52) is fixedly installed on the top of the negative pressure box (51).

8. A printing device for flat optical cables as described in claim 1, characterized in that, The fine-tuning component (42) includes a Y-axis fine-tuning component (421) and a Z-axis fine-tuning component (422). The Y-axis fine-tuning component (421) is mounted on the frame body (1), and the Z-axis fine-tuning component (422) is mounted on the output end of the Y-axis fine-tuning component (421) to achieve position adjustment in the Y-axis direction. The print head (41) is fixedly mounted on the output end of the Z-axis fine-tuning component (422) to achieve position adjustment in the Z-axis direction.

9. A printing device for flat optical cables as described in claim 8, characterized in that, The fine-tuning component (42) also includes a camera (423) and an image processing module (424) mounted on the printhead (41), wherein the camera (423) is electrically connected to the image processing module (424) and faces the nozzle of the printhead (41).

10. A printing device for flat optical cables as described in claim 2, characterized in that, A drying unit (33) is provided at the inlet of the groove (313) of the adaptive pressing groove (31), and a plasma treatment unit (34) is provided at the outlet of the groove (313) of the adaptive pressing groove (31).

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