A cable coating apparatus

Abstract

The application relates to a cable film coating device, and belongs to the technical field of cable processing. The device comprises a multilayer base frame formed by a plurality of cross beams. Wire core pay-off devices and film unwinding devices are arranged on the cross beams at the bottom of the base frame. Protective wire winding devices and cable winding devices are arranged above the cross beams at the top of the base frame. Film breakage detection devices are further arranged on the cross beams at the top of the base frame and located downstream of the film unwinding devices, and are used for detecting the breakage state of the film in real time. A plurality of protective wire pay-off units are arranged at intervals on the side away from the base frame, and a collection unit is arranged above the base frame. The collection unit comprises a guide cylinder. The application realizes full-process online monitoring by real-time detection of film breakage and accurate measurement of production length, effectively prevents defective products, and provides data support for quality tracing.

Description

Technical Field

[0001] This application relates to the technical field of cable processing, and in particular to a cable coating equipment. Background Technology

[0002] During the production process, cables are generally coated with a protective film on the outside of the cable core to improve their mechanical strength, corrosion resistance, temperature resistance, interference resistance, and weather resistance.

[0003] In related technologies, the detection of whether the cable coating is intact mainly relies on regular inspections by operators or manual checks after the production line is shut down. These methods use visual inspection or simple tools to determine whether there are any abnormalities such as breaks or missing parts of the protective film.

[0004] Regarding the aforementioned technologies, the inventors believe they have the following drawbacks: First, manual inspections are time-sensitive, making continuous, uninterrupted monitoring impossible and exhibiting significant lag, making it difficult to detect protective film breakage instantly. Second, because the protective film may continue to move or retract with the cable after breakage, it is not easily detected by the naked eye, leading to a high rate of missed detections. This results in a large number of defective cables with incomplete or uncoated films flowing into subsequent processes and even leaving the factory, not only wasting raw materials but also potentially causing serious quality incidents and customer complaints. Furthermore, frequent downtime for inspections severely impacts production efficiency and increases production costs.

[0005] Therefore, existing manual testing methods are unreliable and lack real-time performance, failing to meet the demands of modern cable production for high efficiency, automation, and high quality. Summary of the Invention

[0006] In order to improve the problems of delayed detection of protective film breakage, reliance on manual labor, low efficiency and poor reliability in the existing cable coating production process, this application provides a cable coating equipment.

[0007] The cable coating equipment provided in this application adopts the following technical solution: A cable coating equipment includes a multi-layer base frame composed of several crossbeams. A wire core feeding device and a coating unwinding device are provided on the crossbeams at the bottom of the base frame. A protective wire winding device and a cable winding device are provided above the crossbeams at the top of the base frame. A coating breakage detection device is also provided on the crossbeams at the top of the base frame, located downstream of the coating unwinding device, for online detection of the breakage state of the coating. The protective wire winding device includes several protective wire feeding units located above the top crossbeam of the base frame, and a drive assembly that drives the several protective wire feeding units to rotate. A collection unit is provided at intervals on the side of the protective wire laying unit away from the base frame, and the collection unit includes a guide tube located above the base frame; The film breakage detection device includes a tension sensor and a rotatably mounted detection roller. The detection roller is used to contact the surface of the traveling film-coated cable. The tension sensor is used to sense the force applied to the detection roller and to determine whether the film is broken based on the change in the force.

[0008] By adopting the above technical solution, the coating breakage detection device is installed on the production line after coating unwinding and before protective wire winding. Its detection roller directly contacts the surface of the coated cable. When the coating is normal, the surface tension of the cable is stable, and the force acting on the detection roller is also relatively stable. Once the coating breaks, the surface structure or tension of the cable will change abruptly, causing a significant change in the force acting on the detection roller. The tension detection sensor can immediately capture this signal and issue an alarm, thereby realizing online, real-time, and automatic monitoring of the coating integrity, greatly improving the timeliness and reliability of detection, and preventing defective products from flowing into subsequent processes.

[0009] Preferably, the film unwinding device includes a first connecting frame fixedly connected to the bottom crossbeam, a first rotating roller fixedly connected to the first connecting frame, and a protective film winding cylinder rotatably connected to the middle of the outer wall of the first rotating roller.

[0010] By adopting the above technical solution, the structure is simple and reliable, and the protective film winding drum can be flexibly rotated to release the protective film.

[0011] Preferably, the wire core unloading device includes a pair of second connecting frames, a second rotating roller rotatably connected between the pair of second connecting frames, a wire core winding drum fixedly connected to the outer wall of the second rotating roller, a second drive source spaced apart on one side of the second rotating roller, a second drive gear fixedly connected to the output shaft of the second drive source, a driven gear fixedly connected to the outer wall of the second rotating roller, the second drive gear and the driven gear meshing, and one of the second connecting frames fixedly connected to the bottom crossbeam.

[0012] By adopting the above technical solution, the second drive source drives the second rotating roller through gear transmission, thereby enabling the active and controllable release of the wire core and providing a certain reverse tension, making the wire core unwinding process smoother and easier to synchronize with the coating process.

[0013] Preferably, the film breakage detection device further includes a connecting frame fixedly connected to the top crossbeam, a fixed seat fixedly connected to the connecting frame on the side away from the top crossbeam, a guide roller rotatably connected to the side of the fixed seat, and the tension detection sensor fixedly connected to the side of the fixed seat near the guide roller.

[0014] By employing the above technical solution, the guide roller guides the traveling direction of the coated cable, ensuring good contact with the detection roller and guaranteeing the stability of the detection signal. The mounting bracket and fixing seat provide a stable installation foundation for the entire detection unit.

[0015] Preferably, a processing table is fixedly connected to the side of the top crossbeam near the cable winding device, the cable winding device is connected to the side of the processing table away from the base frame, the protective wire winding device further includes a rotating cylinder rotatably connected to the processing table, a rotating box fixedly connected to the outer wall of the rotating cylinder, a plurality of protective wire unwinding units are arranged inside the rotating box, and the driving assembly includes an external gear fixedly connected to the rotating box, a first driving gear meshing with the external gear, and a first driving source fixedly connected to the first driving gear.

[0016] By adopting the above technical solution, the processing table provides an integrated installation platform for the upper device. The drive source drives the gear pair, which in turn rotates the rotating box and all its internal protective wire feeding units, achieving synchronous and efficient spiral winding of multiple protective wires. The structure is compact and the transmission is smooth.

[0017] Preferably, the collection unit further includes a third connecting frame spaced apart on one side of the rotating box, a connecting shaft fixedly connected to the third connecting frame, a connecting seat fixedly connected to the other end of the connecting shaft, and the guide cylinder fixedly connected to the connecting seat.

[0018] By adopting the above technical solution, the third connecting frame, connecting shaft and connecting seat will stably suspend the guide cylinder in the correct position, ensuring that its through hole is aligned with the winding center axis, so that the cable can pass through smoothly and accurately merge with the rotating protective line.

[0019] Preferably, the bottom surface of the processing table is connected to a guiding device. The guiding device includes a fourth connecting frame fixedly connected to the processing table, a guide seat fixedly connected to the other end of the fourth connecting frame, multiple sets of first limiting rollers connected to the guide seat, and a processing assembly connected to the guide seat. The processing assembly includes a support seat connected to the side of the guide seat near the first limiting rollers, and a plurality of second limiting rollers rotatably connected to the support seat. The first limiting rollers and the second limiting rollers are arranged vertically between each other.

[0020] By adopting the above technical solution, the guiding device is located after the film is formed. Its interior consists of a multi-directional straightening channel formed by the first and second limiting rollers arranged vertically and crosswise. This can effectively straighten, center and shape the cable after the initial film coating, eliminate twisting or bending, and ensure that the cable enters the subsequent inspection and winding process with a regular circular cross section, thereby improving the quality of the final product and the uniformity of winding.

[0021] Preferably, the cable winding device includes a fifth connecting frame fixedly connected to the processing table, a rotating shaft rotatably connected to the fifth connecting frame, a third drive source fixedly connected to one end of the rotating shaft, and a cable winding drum fixedly connected to the outer wall of the rotating shaft.

[0022] By adopting the above technical solution, the third drive source serves as the main traction power, driving the cable winding drum to rotate and providing continuous traction for the entire production line. The structure is simple and the drive is direct.

[0023] Preferably, the film breakage detection device further includes an auxiliary positioning component, which includes a first positioning part connected to the first connecting frame and a second positioning part connected to the fifth connecting frame; The first positioning part includes a limiting seat and a positioning frame fixedly connected to a first connecting frame. The limiting seat has a limiting groove on the side away from the first connecting frame. The positioning frame has a sliding hole. A fixed shaft is slidably connected in the sliding hole. A pressure wheel and a first encoder are fixedly connected to the end of the fixed shaft near the limiting seat and the end away from the limiting seat, respectively. A fixed plate is fixedly connected to the side of the positioning frame away from the limiting seat. A guide shaft is inserted into the fixed plate. A support plate and a limiting block are fixedly connected to both ends of the guide shaft, respectively. An elastic element is sleeved on the outer wall of the guide shaft. The two ends of the elastic element are fixedly connected to the fixed plate and the limiting block, respectively.

[0024] By adopting the above technical solution, the first positioning part uses the pressure provided by the elastic element to press the clamping roller to press the wire core or film at the exit of the limiting groove. The linear motion of the wire core / film is converted into the rotation of the clamping roller and recorded by the first encoder, thereby accurately measuring the length and speed of the wire core unwinding, providing key data for production control and synchronization. When the film breaks, the elastic force pushes the clamping roller down, which can also press down the broken film head.

[0025] Preferably, the second positioning part includes a rotating wheel fixedly connected to the outer wall of the rotating shaft, a driven wheel abutting on the rotating wheel, a second encoder fixedly connected to the driven wheel, and the second encoder fixedly connected to the fifth connecting frame.

[0026] By adopting the above technical solution, the second positioning unit transmits the rotational motion of the rotating shaft to the second encoder through friction transmission. By measuring the number of revolutions of the rotating wheel, the actual length of the wound cable can be calculated with extremely high accuracy, realizing online automatic measurement of production length without manual measurement, which is accurate and efficient.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a film breakage detection device that includes a tension detection sensor and a detection roller, and placing it downstream of the film unwinding, the tension change on the surface of the film-coated cable can be sensed in real time. This allows for immediate detection and alarm at the moment the film breaks, achieving online, automatic, and real-time breakage detection. This greatly improves the timeliness and reliability of detection and effectively reduces the generation of defective products.

[0028] 2. By setting up an auxiliary positioning component including a first positioning part and a second positioning part, the first encoder can accurately measure the unwinding length and speed of the wire core, and the second encoder can accurately measure the winding length of the cable, realizing real-time monitoring and measurement of key lengths in the production process, and providing accurate data support for production management, quality traceability and process control. Attached Figure Description

[0029] Figure 1 This is a perspective view of the cable coating equipment in Embodiment 1 of this application.

[0030] Figure 2 This is a perspective view of the wire core feeding device in Embodiment 1 of this application.

[0031] Figure 3 This is a perspective view of the film breakage detection device in Embodiment 1 of this application.

[0032] Figure 4 This is a perspective view illustrating the guiding device in Embodiment 1 of this application.

[0033] Figure 5 This is a perspective view of the collection unit in Embodiment 1 of this application.

[0034] Figure 6 This is a perspective view illustrating the protective wire winding device in Embodiment 1 of this application.

[0035] Figure 7 This is a perspective view illustrating the cable winding device in Embodiment 1 of this application.

[0036] Figure 8 This is a perspective view of Embodiment 2 of this application, illustrating the cable coating equipment with the addition of auxiliary positioning components.

[0037] Figure 9 This application is about Figure 8 A magnified view at point A.

[0038] Figure 10 This is a perspective view illustrating the second positioning part in Embodiment 2 of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Base frame; 2. Core wire unwinding device; 3. Film coating unwinding device; 4. Protective wire winding device; 5. Cable winding device; 6. Film coating breakage detection device; 7. Gathering unit; 8. Processing table; 9. Guiding device; 10. Auxiliary positioning assembly; 11. First positioning part; 12. Second positioning part; 21. Second connecting frame; 22. Second rotating roller; 23. Core wire winding drum; 24. Second drive source; 25. Second drive gear; 26. Driven gear; 31. First connecting frame; 32. First rotating roller; 33. Protective film winding drum; 41. Protective wire unwinding unit; 411. Rotating frame; 412. Connecting drum; 42. Drive assembly; 43. Rotating drum; 431. Through hole; 44. Rotating box; 51. Fifth connecting frame; 52. Rotating shaft; 53. Third drive source; 54. Cable winding drum; 61. Tension detection sensor; 62. Detection sensor. 621. Measuring roller; 622. Contact shaft part; 623. Rewinding shaft; 64. Connecting frame; 65. Fixed seat; 66. Guide roller; 71. Guide cylinder; 711. Through hole; 72. Third connecting frame; 73. Connecting shaft; 74. Connecting seat; 91. Fourth connecting frame; 92. Guide seat; 93. First limiting roller; 94. Processing assembly; 101. Crossbeam; 111. Limiting seat; 112. Positioning frame; 113. Fixed shaft; 114. Pressure roller; 115. First encoder; 116. Fixing plate; 117. Guide shaft; 118. Support plate; 119. Limiting block; 120. Elastic element; 121. Rotating wheel; 122. Driven wheel; 123. Second encoder; 421. External gear; 422. First drive gear; 423. First drive source; 941. Support base; 942. Second limiting roller; 1111. Limiting groove; 1121. Sliding hole. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail. Example

[0041] This application discloses a cable coating device, referring to... Figure 1 It includes a multi-layered base frame 1, a wire core unwinding device 2, a film unwinding device 3, a protective wire winding device 4, a cable winding device 5, a film breakage detection device 6, a collection unit 7, a processing table 8, and a guiding device 9.

[0042] The base frame 1 is composed of several crossbeams 101 fixedly connected. In this embodiment, the base frame 1 has a two-layer structure, with its bottom used to install the wire core unwinding device 2 and the film-coating unwinding device 3. In this embodiment, the wire core unwinding device 2 and the film-coating unwinding device 3 are arranged at 90°. The processing table 8 is fixedly connected to the top surface of the top crossbeam 101. The processing table 8 is used to install the film-coating unwinding device 3, the protective wire winding device 4, the cable winding device 5, the gathering unit 7, and the guiding device 9. The film breakage detection device 6 is placed on the bottom surface of the top crossbeam 101 and is located on the side close to the film-coating unwinding device 3.

[0043] Specifically, the film unwinding device 3 is used to release the strip-shaped protective film. The film unwinding device 3 includes a first connecting frame 31, a first rotating roller 32, and a protective film take-up cylinder 33. The first connecting frame 31 is fixedly connected to the outer side of the bottom crossbeam 101 of the base frame 1. The first rotating roller 32 is fixedly connected to the first connecting frame 31, and the protective film take-up cylinder 33 is rotatably connected to the middle of the outer wall of the first rotating roller 32 through a bearing, so that the protective film take-up cylinder 33 can rotate freely around the first rotating roller 32 to release the protective film.

[0044] Reference Figure 2 The wire core unloading device 2 is used to continuously unload the wire cores to be coated. The wire core unloading device 2 includes a pair of second connecting frames 21, a second rotating roller 22, a wire core winding drum 23, a second drive source 24, a second drive gear 25, and a driven gear 26. One of the second connecting frames 21 is fixedly connected to the top surface of the crossbeam 101 at the bottom of the base frame 1. The second rotating roller 22 is rotatably connected between the pair of second connecting frames 21 via bearings. The wire core winding drum 23 is fixedly connected to the outer wall of the second rotating roller 22 for winding the wire core material. The driven gear 26 is fixedly connected to the outer wall of the second rotating roller 22. The second drive source 24 (preferably a servo motor) is spaced apart on one side of the second rotating roller 22 and fixedly connected to the bottom crossbeam 101. The second drive gear 25 is fixedly connected to the output shaft of the second drive source 24 and meshes with the driven gear 26. Driven by the second drive source 24, the release speed and tension of the wire core can be controlled.

[0045] Reference Figure 3The film breakage detection device 6 is used to detect whether the protective film has broken during the film wrapping process. It is installed on the crossbeam 101 at the top of the base frame 1, downstream of the film unwinding device 3 and upstream of the protective wire winding device 4. The film breakage detection device 6 includes a tension detection sensor 61, a detection roller 62, a take-up shaft 63, a connecting frame 64, a fixed seat 65, and a guide roller 66. The connecting frame 64 is fixedly connected to the bottom surface of the crossbeam 101 at the top of the base frame 1. The fixed seat 65 is fixedly connected to the side of the connecting frame 64 away from the crossbeam 101. The guide roller 66 is rotatably connected to one side of the fixed seat 65 via bearings and is located at the lower part of the fixed seat 65, used to guide and protect the direction of travel after film wrapping. Tension sensor 61 (preferably a pressure sensor in this embodiment) is fixedly connected to the upper part of the fixed base 65 near the guide roller 66, and is used to sense the force exerted by the film-coated cable on the detection roller 62. The detection roller 62 further includes a contact shaft portion 621 and a connecting portion 622, wherein the connecting portion 622 is fixedly connected to the output portion of the tension sensor 61, and the contact shaft portion 621 is fixedly connected to the end of the connecting portion 622 away from the tension sensor 61, for direct contact with the protective film.

[0046] Reference Figure 4 The guiding device 9 is used to initially guide, integrate, and straighten the wire cores and coatings drawn from the wire core unwinding device 2 and the coating unwinding device 3, ensuring that they are flat and aligned before entering the next process. The guiding device 9 is located after the coating breakage detection device 6 and before the gathering unit 7 and the protective wire winding device 4, and is connected to the top crossbeam 101 of the base frame 1. The guiding device 9 includes a fourth connecting frame 91, a guide seat 92, multiple sets of first limiting rollers 93, and a processing assembly 94. One end of the fourth connecting frame 91 is fixedly connected to the bottom surface of the top crossbeam 101 of the base frame 1. The guide seat 92 is fixedly connected to the other end of the fourth connecting frame 91. Multiple sets of first limiting rollers 93 are rotatably connected to the side of the guide seat 92 near the wire core winding drum 23. In this embodiment, the first limiting rollers 93 are set in two sets, with two first limiting rollers 93 in each set, for a total of four, arranged diagonally. The processing component 94 is disposed on the side of the guide seat 92 near the first limiting roller 93 and located between the four first limiting rollers 93, including a support seat 941 and a plurality of second limiting rollers 942. The support seat 941 is fixedly connected to the guide seat 92. The plurality of second limiting rollers 942 (usually arranged horizontally, and in this embodiment there are two) are rotatably connected to the support seat 941 by bearings, and the arrangement direction of the second limiting rollers 942 is perpendicular to the arrangement direction of the first limiting rollers 93, thereby forming a multi-directional limiting and straightening channel to shape and guide the cable that has been initially covered with a protective film, so that it can smoothly enter the subsequent processing station.

[0047] Reference Figure 5 and Figure 6 The protective wire winding device 4 is used to synchronously and spirally wind multiple protective wires around the outer circumference of the wire core (i.e., the coated cable) already covered with protective film. The protective wire winding device 4 is located above the top beam 101 of the base frame 1 and includes several protective wire feeding units 41, a drive assembly 42, a rotating cylinder 43, and a rotating box 44. The rotating cylinder 43 is rotatably connected to the processing table 8 via bearings. The rotating cylinder 43 has an open end and a closed end, with the open end facing downwards and the closed end facing upwards. A through hole 431 is provided at the center of the top of the rotating cylinder 43. The rotating box 44 is an annular cylinder, fixedly connected to the outer wall of the rotating cylinder 43, and can rotate with the rotating cylinder 43. Several protective wire feeding units 41 (four in this embodiment) are evenly arranged in a circular array on the bottom wall of the rotating box 44, each protective wire feeding unit 41 holding one roll of protective wire. The drive assembly 42 drives the entire rotating box 44 to rotate.

[0048] Specifically, each protective wire feeding unit 41 includes a pair of rotating frames 411 and a connecting cylinder 412 rotatably connected between the pair of rotating frames 411. The protective wire is wound around the outer wall of the connecting cylinder 412, and the rotating frames 411 are fixedly connected to the bottom wall of the rotating box 44. The drive assembly 42 includes an external gear 421, a first drive gear 422, and a first drive source 423. The external gear 421 is fixedly connected to the bottom surface of the rotating box 44. The first drive source 423 (preferably a servo motor) is fixedly connected to the top surface of the processing table 8, and its output shaft is vertically upward. The first drive gear 422 is fixedly connected to the output shaft of the first drive source 423 and meshes with the external gear 421. Driven by the first drive source 423, the rotating box 44 and all the protective wire feeding units 41 inside can be driven to revolve around the cable being processed, thereby realizing the spiral winding of the protective wire.

[0049] The gathering unit 7 is used to spatially converge the wire core, protective film, and multiple protective wires onto the same axis, preparing for subsequent spiral winding. The gathering unit 7 is spaced apart on one side of the protective wire winding device 4 and connected to the top surface of the processing table 8. It includes a guide cylinder 71, a third connecting frame 72, a connecting shaft 73, and a connecting seat 74. The third connecting frame 72 is spaced apart on one side of the rotating box 44 and fixedly connected to the top surface of the processing table 8. One end of the connecting shaft 73 is fixedly connected to the third connecting frame 72. The connecting seat 74 is fixedly connected to the other end of the connecting shaft 73. The guide cylinder 71 is fixedly connected to the connecting seat 74, and its center has a through hole 711 for the converged cables to pass through. It should be noted that the through hole 711 and the through hole 431 are coaxially aligned.

[0050] Reference Figure 7The cable winding device 5 is used to wind up the final formed cable product. The cable winding device 5 is mounted on a processing table 8 above the top beam 101 of the base frame 1, and includes a fifth connecting frame 51, a rotating shaft 52, a third drive source 53, and a cable winding drum 54. The fifth connecting frame 51 is fixedly connected to the side of the processing table 8 away from the base frame 1, and is spaced apart on the side of the rotating box 44 away from the third connecting frame 72. The rotating shaft 52 is rotatably connected to the upper part of the fifth connecting frame 51 via bearings. The third drive source 53 (preferably a geared motor) is fixedly connected to one end of the rotating shaft 52 via a coupling, and is also fixedly connected to the fifth connecting frame 51. The cable winding drum 54 is fixedly connected to the outer wall of the rotating shaft 52 via a key connection for winding the finished cable.

[0051] The implementation principle of this first embodiment is as follows: First, the coiled wire core is installed on the wire core winding drum 23, the coiled protective film is installed on the protective film winding drum 33, and the coiled protective wire is installed on the protective wire unwinding unit 41. After the equipment is started, the third drive source 53 of the cable winding device 5 starts working as an active traction power source, driving the rotating shaft 52 and the cable winding drum 54 to rotate, generating a continuous winding traction force.

[0052] Under the traction of the third drive source 53, the entire production line begins to operate. The traction force first acts on the finished cable and is then transmitted backward. At the same time, the first drive source 423 of the protective wire winding device 4 operates, driving the rotating box 44 to rotate through the first drive gear 422 and the external gear 421, which in turn drives all the protective wire feeding units 41 inside to rotate synchronously.

[0053] Subsequently, the traction force continues to be transmitted backward, acting on the cable. The wire core is pulled out from the wire core take-up spool 23, and at the same time, the protective film is pulled out from the protective film take-up spool 33, wrapping around the surface of the wire core under the traction, forming a preliminary coated cable.

[0054] Next, the pre-coated cable enters the guide device 9 upwards. The cable passes through a vertical cross channel composed of multiple sets of first limiting rollers 93 and several second limiting rollers 942, and is further straightened, aligned and shaped to form a well-shaped coated cable.

[0055] Afterwards, the shaped coated cable passes through the coating breakage detection device 6. The detection roller 62 contacts the cable surface, and the tension detection sensor 61 senses the pressure signal in real time. Once an abnormal pressure is detected (such as a sudden drop), it is determined that the protective film is broken, and the system alarms.

[0056] Then, the tested coated cable passes through the through hole 431 of the rotating cylinder 43 of the protective wire winding device 4 and enters the guide cylinder 71 of the collection unit 7. The protective wire released from the rotating protective wire release unit 41 spirally winds around the outer circumference of the coated cable at the entrance of the guide cylinder 71 to form the final composite cable.

[0057] Finally, the composite cable with protective wire wrapped around it is wound onto the cable winding drum 54 under continuous traction, completing the entire processing and winding process. Example

[0058] Reference Figure 8 This second embodiment expands the functionality of the film breakage detection device 6 based on all the structures of the first embodiment by integrating an auxiliary positioning component 10. The auxiliary positioning component 10 includes a first positioning part 11 connected to the first connecting frame 31 and a second positioning part 12 connected to the fifth connecting frame 51. The first positioning part 11 is used to accurately position and measure the speed of the wire core conveying before film winding; the second positioning part 12 is used to simultaneously measure the winding length during cable winding.

[0059] Reference Figure 9The first positioning part 11 includes a limiting seat 111, a positioning frame 112, a fixed shaft 113, a pressure wheel 114, a first encoder 115, a fixed plate 116, a guide shaft 117, a support plate 118, a limiting block 119, and an elastic element 120. The limiting seat 111 and the positioning frame 112 are both fixedly connected to the top surface of the first connecting frame 31. An arc-shaped limiting groove 1111 is formed on the top surface of the limiting seat 111 near the positioning frame 112, and the inner wall shape of the limiting groove 1111 matches the shape of the pressure wheel 114. A vertical sliding hole 1121 is formed on the positioning frame 112. The fixed shaft 113 is slidably connected within this sliding hole 1121 and can slide up and down along the sliding hole 1121. The pressure wheel 114 is rotatably connected to the end of the fixed shaft 113 near the limiting seat 111 via a bearing. A first encoder 115 (preferably an incremental rotary encoder) is fixedly connected to the end of the fixed shaft 113 away from the limiting seat 111, and its input shaft is coaxially arranged with the axle of the pressure wheel 114. A fixed plate 116 is fixedly connected to the side of the positioning frame 112 away from the limiting seat 111. A guide shaft 117 is inserted into the middle of the fixed plate 116. A support plate 118 is fixedly connected to the top end of the guide shaft 117, and the first encoder 115 is fixedly connected to the top surface of the support plate 118. A limiting block 119 is fixedly connected to the bottom end of the guide shaft 117. An elastic element 120 (preferably a compression spring) is sleeved on the outer wall of the guide shaft 117, and its two ends are fixedly connected to the bottom surface of the fixed plate 116 and the top surface of the limiting block 119, respectively. In its natural state, the elastic force of the elastic element 120 pushes the fixed shaft 113 downward through the limiting block 119, the guide shaft 117 and the support plate 118, thereby causing the pressure wheel 114 to have a tendency to press towards the limiting groove 1111.

[0060] Reference Figure 10 The second positioning part 12 includes a rotating wheel 121, a driven wheel 122, and a second encoder 123. The rotating wheel 121 (preferably a rubber friction wheel) is fixedly connected to the outer wall of the rotating shaft 52 of the cable winding device 5 and rotates synchronously with the rotating shaft 52. The driven wheel 122 (preferably a rubber friction wheel) abuts against the circumferential surface of the rotating wheel 121 and is driven to rotate by friction. The second encoder 123 (preferably an incremental rotary encoder) is fixedly connected to the fifth connecting frame 51 and located near the rotating wheel 121; its input shaft is coaxially and fixedly connected to the axle of the driven wheel 122.

[0061] The implementation principle of this second embodiment is as follows: Before the coating and winding begins, the coating film, after being drawn out from the core unwinding device 2, first passes through the limiting groove 1111 of the first positioning part 11. Subsequently, during the initial threading, the operator can pull the support plate 118 upward, causing the guide shaft 117 and the limiting block 119 to move upward, compressing the elastic element 120, thereby releasing the downward pressure on the fixed shaft 113. At this time, the coating film can be placed between the pressure roller 114 and the limiting groove 1111, and then the support plate 118 can be released. Under the restoring force of the elastic element 120, the pressure roller 114 stably presses the coating film at the exit position of the limiting groove 1111, but not within the limiting groove 1111. When the coating film is pulled forward, it will drive the pressure roller 114 to rotate, and the rotation of the pressure roller 114 is recorded in real time by the first encoder 115. By recording the number of pulses by the first encoder 115, the control system can accurately calculate the actual delivery length and instantaneous speed of the wire core, providing a precise speed feedback signal for subsequent synchronous control of the coating, and ensuring that the pitch of the coating winding is uniform.

[0062] During cable winding, the rotating shaft 52 drives the cable winding drum 54 and the rotating wheel 121 to rotate together. The rotating wheel 121 drives the driven wheel 122 to rotate synchronously through friction. The rotation of the driven wheel 122 is recorded in real time by the second encoder 123. Since the circumference of the rotating wheel 121 is known, by recording the number of pulses of the second encoder 123, the control system can accurately calculate the number of revolutions of the rotating shaft 52, thereby calculating the length of the wound cable and realizing online measurement of the winding length.

[0063] When the protective film breaks, the torque of the third drive source 53 cannot be transmitted to the protective film on the protective film winding drum 33. As a result, the elastic force of the elastic element 120 moves the first encoder 115 and the pressure wheel 114 toward the side closer to the limiting groove 1111. Then the pressure wheel 114 will press the broken protective film into the limiting groove 1111.

[0064] Using the above method, this device can calculate the location of the fracture using existing sensor data without detecting the fracture, without the need for additional hardware, thus achieving rapid location and traceability of production faults.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable coating device, comprising a multi-layer base frame (1) arranged by a plurality of crossbeams (101), characterized in that: A wire core unwinding device (2) and a film unwinding device (3) are provided on the crossbeam (101) at the bottom of the base frame (1). A protective wire winding device (4) and a cable winding device (5) are provided above the crossbeam (101) at the top of the base frame (1). A film breakage detection device (6) is also provided on the crossbeam (101) at the top of the base frame (1), located downstream of the film unwinding device (3), for online detection of the film breakage state. The protective wire winding device (4) includes several protective wire feeding units (41) located above the top crossbeam (101) of the base frame (1), and a driving component (42) that drives the several protective wire feeding units (41) to rotate. A collection unit (7) is provided at intervals on the side of the protective wire laying unit (41) away from the base frame (1), and the collection unit (7) includes a guide cylinder (71) located above the base frame (1). The film breakage detection device (6) includes a tension detection sensor (61) and a rotatably disposed detection roller (62). The detection roller (62) is used to contact the surface of the traveling film-coated cable. The tension detection sensor (61) is used to sense the force on the detection roller (62) and determine whether the film is broken based on the change of the force.

2. The cable coating equipment according to claim 1, characterized in that: The film unwinding device (3) includes a first connecting frame (31) fixedly connected to the bottom crossbeam (101), a first rotating roller (32) fixedly connected to the first connecting frame (31), and a protective film winding cylinder (33) rotatably connected to the middle of the outer wall of the first rotating roller (32).

3. The cable coating equipment according to claim 1, characterized in that: The wire core feeding device (2) includes a pair of second connecting frames (21), a second rotating roller (22) rotatably connected between the pair of second connecting frames (21), a wire core winding drum (23) fixedly connected to the outer wall of the second rotating roller (22), a second drive source (24) spaced apart on one side of the second rotating roller (22), a second drive gear (25) fixedly connected to the output shaft of the second drive source (24), and a driven gear (26) fixedly connected to the outer wall of the second rotating roller (22). The second drive gear (25) and the driven gear (26) mesh, and one of the second connecting frames (21) is fixedly connected to the crossbeam (101) at the bottom.

4. The cable coating equipment according to claim 1, characterized in that: The film breakage detection device (6) further includes a connecting frame (64) fixedly connected to the top crossbeam (101), a fixed seat (65) fixedly connected to the side of the connecting frame (64) away from the top crossbeam (101), a guide roller (66) rotatably connected to the side of the fixed seat (65), and the tension detection sensor (61) fixedly connected to the side of the fixed seat (65) near the guide roller (66).

5. The cable coating equipment according to claim 2, characterized in that: The top beam (101) is fixedly connected to a processing table (8) on the side near the cable winding device (5). The cable winding device (5) is connected to the side of the processing table (8) away from the base frame (1). The protective wire winding device (4) also includes a rotating cylinder (43) rotatably connected to the processing table (8) and a rotating box (44) fixedly connected to the outer wall of the rotating cylinder (43). Several protective wire unloading units (41) are all arranged inside the rotating box (44). The drive assembly (42) includes an external gear (421) fixedly connected to the rotating box (44), a first drive gear (422) meshing with the external gear (421), and a first drive source (423) fixedly connected to the first drive gear (422).

6. The cable coating equipment according to claim 5, characterized in that: The collection unit (7) also includes a third connecting frame (72) spaced apart on one side of the rotating box (44), a connecting shaft (73) fixedly connected to the third connecting frame (72), a connecting seat (74) fixedly connected to the other end of the connecting shaft (73), and the guide cylinder (71) fixedly connected to the connecting seat (74).

7. The cable coating equipment according to claim 5, characterized in that: The bottom surface of the processing table (8) is connected to a guide device (9). The guide device (9) includes a fourth connecting frame (91) fixedly connected to the processing table (8), a guide seat (92) fixedly connected to the other end of the fourth connecting frame (91), multiple sets of first limiting rollers (93) connected to the guide seat (92), and a processing assembly (94) connected to the guide seat (92). The processing assembly (94) includes a support seat (941) connected to the side of the guide seat (92) near the first limiting roller (93), and a plurality of second limiting rollers (942) rotatably connected to the support seat (941). The first limiting rollers (93) and the second limiting rollers (942) are arranged vertically between each other.

8. A cable coating equipment according to claim 5, characterized in that: The cable winding device (5) includes a fifth connecting frame (51) fixedly connected to the processing table (8), a rotating shaft (52) rotatably connected to the fifth connecting frame (51), a third drive source (53) fixedly connected to one end of the rotating shaft (52), and a cable winding drum (54) fixedly connected to the outer wall of the rotating shaft (52).

9. A cable coating equipment according to claim 8, characterized in that: The film breakage detection device (6) further includes an auxiliary positioning component (10), which includes a first positioning part (11) connected to the first connecting frame (31) and a second positioning part (12) connected to the fifth connecting frame (51). The first positioning part (11) includes a limiting seat (111) and a positioning frame (112) fixedly connected to the first connecting frame (31). The limiting seat (111) has a limiting groove (1111) on the side away from the first connecting frame (31). The positioning frame (112) has a sliding hole (1121). A fixed shaft (113) is slidably connected in the sliding hole (1121). The fixed shaft (113) is fixedly connected to a clamping device at one end near the limiting seat (111) and the other end away from the limiting seat (111). The wheel (114) and the first encoder (115) are fixedly connected to the side of the positioning frame (112) away from the limiting seat (111), and a guide shaft (117) is inserted into the fixed plate (116). A support plate (118) and a limiting block (119) are fixedly connected to both ends of the guide shaft (117). An elastic element (120) is sleeved on the outer wall of the guide shaft (117), and both ends of the elastic element (120) are fixedly connected to the fixed plate (116) and the limiting block (119).

10. A cable coating device according to claim 9, characterized in that: The second positioning part (12) includes a rotating wheel (121) fixedly connected to the outer wall of the rotating shaft (52), a driven wheel (122) abutting on the rotating wheel (121), a second encoder (123) fixedly connected to the driven wheel (122), and the second encoder (123) fixedly connected to the fifth connecting frame (51).

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