Wrapping method and system for manufacturing radio frequency coaxial cable

Abstract

The invention relates to the technical field of radio frequency coaxial cable manufacturing, in particular to a wrapping method and system for manufacturing a radio frequency coaxial cable, and the method comprises the steps: controlling a take-up frame to pull a to-be-wrapped body made of an inner conductor and an insulating layer to an initial wrapping position at a constant speed; starting wrapping equipment to be matched with the take-up frame to wind a metal belt in the wrapping equipment onto the to-be-wrapped body according to a preset wrapping angle from the initial wrapping position so as to carry out wrapping test on the to-be-wrapped body; collecting the diameter of the to-be-wrapped body wound with the metal belt in the wrapping test; determining the surface wrapping state of the to-be-wrapped body according to the diameter; and determining a wrapping processing mode based on the surface wrapping state, and performing actual wrapping on the to-be-wrapped body according to the wrapping processing mode to form an outer conductor layer. According to the invention, signals are prevented from leaking between the metal tape and the to-be-lapped body, and the signal transmission efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency coaxial cable manufacturing, and in particular to a wrapping method and system for manufacturing radio frequency coaxial cables. Background Art

[0002] RF coaxial cable is a cable specially used to transmit high-frequency electrical signals (RF signals) and is widely used in communications, radio and television, radar, wireless equipment and other fields.

[0003] Chinese Patent Publication No.: CN117476290B discloses a manufacturing method of a radio frequency coaxial cable, a radio frequency coaxial cable and a manufacturing device, comprising: twisting a plurality of first conductive wires to form an inner conductor; forming an inner skin layer outside the inner conductor; injecting a first gas and a second gas into a molten polyethylene material to form a molten mixture, and then extruding the molten mixture on the periphery of the inner skin layer to form a foamed insulating layer, wherein the dielectric constant of the first gas is smaller than the dielectric constant of the second gas, and the injection amount of the first gas is greater than the injection amount of the second gas; forming an outer skin layer outside the foamed insulating layer; and forming an outer conductor outside the outer skin layer.

[0004] It can be seen that the manufacturing method, RF coaxial cable and manufacturing device of the RF coaxial cable have the problem that during the wrapping process of the body to be wrapped and the metal belt, static electricity adsorbs dust or pollutant particles in the environment due to mutual friction, resulting in an uneven surface of the body to be wrapped, a gap between the metal belt and the body to be wrapped, and signal leakage from the gap, resulting in signal attenuation and thus affecting the signal transmission efficiency. Summary of the invention

[0005] To this end, the present invention provides a wrapping method and system for manufacturing radio frequency coaxial cables, which are used to overcome the problem in the prior art that during the wrapping process of the body to be wrapped and the metal tape, dust or pollutant particles in the environment are adsorbed electrostatically due to mutual friction, resulting in an uneven surface of the body to be wrapped, a gap between the metal tape and the body to be wrapped, and signal leakage from the gap, resulting in signal attenuation and thus affecting signal transmission efficiency.

[0006] To achieve the above object, on the one hand, the present invention provides a wrapping method for manufacturing a radio frequency coaxial cable, comprising: Control the take-up frame to uniformly pull the to-be-wound body made of the inner conductor and the insulating layer to the initial winding position; Start the wrapping device to cooperate with the take-up frame to wrap the metal strip in the wrapping device onto the body to be wrapped at a predetermined wrapping angle from the initial wrapping position to perform a wrapping test on the body to be wrapped; Collecting the diameter of the body to be wrapped with the metal tape in the wrapping test; Determining the surface wrapping state of the body to be wrapped according to the diameter; Determine the wrapping processing method based on the surface wrapping state, including adjusting the moving speed of the body to be wrapped, or determining the shaft wear treatment method according to the temperature of the rotating shaft of the wrapping device and the diameter change amount of the adjacent area of the current wrapping area, including adjusting the vertical height of the rotating shaft / adjusting the area of the overlapping area, Or determine the wrapping angle according to the radius difference amount of the metal band wound on the rotating shaft; Perform actual wrapping on the body to be wrapped according to the wrapping processing method to form an outer conductor layer; Wrap the strip on the outside of the outer conductor layer to form a protective layer, and output the finished radio frequency coaxial cable; Wherein, the radius difference amount of the metal band on the rotating shaft is the difference between the maximum distance from the outermost side surface of the metal band wound on the rotating shaft to the rotating shaft and the minimum distance from the outermost side surface of the metal band wound on the rotating shaft to the rotating shaft.

[0007] Further, the determining the surface wrapping state of the body to be wrapped according to the diameter includes: Compare the diameter with a preset first diameter; Determine that the body to be wrapped is in an abnormal wrapping state according to the diameter being greater than the preset first diameter; Determine that the wrapped body is in a normal wrapping state according to the diameter being less than or equal to the preset first diameter.

[0008] Further, the adjusting the moving speed of the body to be wrapped includes: Compare the diameter with the preset first diameter and the preset second diameter respectively; Reduce the moving speed of the body to be wrapped according to the diameter being greater than the preset first diameter and less than or equal to the preset second diameter; Wherein, the preset first diameter is less than the preset second diameter.

[0009] Further, the moving speed of the body to be wrapped has a negative correlation with the diameter.

[0010] Further, the adjusting the vertical height of the rotating shaft includes: Compare the diameter with the preset second diameter; According to the diameter being greater than the preset second diameter, preliminarily determine that the influence degree of the metal band heating on the softening of the insulating layer does not meet the requirements, and obtain the temperature of the rotating shaft and the diameter change amount of the adjacent area of the current wrapping area; Compare the temperature of the rotating shaft and the diameter change amount with a preset first temperature value, a preset second temperature value and a preset diameter change amount respectively; According to the fact that the temperature of the rotating shaft is greater than the preset first temperature value and less than or equal to the preset second temperature value, and the diameter change is less than or equal to the preset diameter change, it is further determined that the degree of softening of the insulating layer caused by the heating of the metal strip does not meet the requirements, and the vertical height of the rotating shaft is adjusted in the same direction according to the direction of the metal strip's tendency to come off the rotating shaft; Wherein, the preset first temperature value is lower than the preset second temperature value.

[0011] Further, adjusting the area of ​​the overlapping region includes: According to the temperature of the rotating shaft being greater than the preset second temperature value and less than or equal to the preset third temperature value, and the diameter change being greater than the preset diameter change, reducing the area of ​​the overlapping region; Wherein, the preset second temperature value is lower than the preset third temperature value.

[0012] Furthermore, the area of ​​the overlapping region is negatively correlated with the diameter change.

[0013] Further, determining the wrapping angle according to the radius difference of the metal strip wound on the rotating shaft includes: comparing the temperature of the rotating shaft with a preset third temperature value; If the temperature of the rotating shaft is greater than the preset third temperature value, and the diameter change is less than or equal to the preset diameter change, it is preliminarily determined that the degree of eccentric wear and heating of the metal belt does not meet the requirements, and the radius difference of the metal belt on the rotating shaft is obtained; Comparing the radius difference with a preset radius difference; If the radius difference is greater than the preset radius difference, it is further determined that the degree of eccentric wear and heating of the metal belt does not meet the requirements, and the wrapping angle is reduced.

[0014] Furthermore, the wrapping angle is negatively correlated with the radius difference.

[0015] On the other hand, the present invention also provides a wrapping system for manufacturing a radio frequency coaxial cable, comprising: The wrapping device is used for actually wrapping the body to be wrapped to form an outer conductor layer, comprising a rotating shaft with a metal belt wound around it, a vertical moving component connected to the rotating shaft for adjusting the vertical height of the rotating shaft, and a horizontal moving component connected to the vertical moving component for adjusting the horizontal distance between the vertical moving component and the body to be wrapped; A wire take-up frame, which is arranged at the output end of the wrapping device and is used to change the vertical wrapping position of the package to be wrapped, and includes a wire take-up roller arranged above the rotating shaft and used to adjust the moving speed of the package to be wrapped; a detection unit connected to the wrapping device, for detecting the diameter of the to-be-wrap body wrapped with the metal strip, the diameter of an area adjacent to the current wrapping area, the radius of the metal strip wound on the rotating shaft, and the temperature of the rotating shaft; A control unit is respectively connected to the wrapping device, the take-up frame and the detection unit, and is used to determine the surface wrapping state of the body to be wrapped according to the diameter of the body to be wrapped with the metal strip, and determine the wrapping processing method based on the surface wrapping state, including adjusting the moving speed of the body to be wrapped, or, according to the temperature of the rotating shaft of the wrapping device and the diameter change of the adjacent area of ​​the current wrapping area, determine the shaft wear processing method, including adjusting the vertical height of the rotating shaft / adjusting the area of ​​the overlapping area, or, according to the radius difference of the metal strip wound on the rotating shaft, determine the wrapping angle.

[0016] Compared with the prior art, the beneficial effect of the present invention lies in that, by adjusting the moving speed of the body to be wound, the relative friction speed between the body to be wound and the metal belt is reduced, the number of frictions per unit time between the body to be wound and the metal belt is reduced, the rate of electron transfer is reduced, and the amount of static electricity generated due to mutual friction between the body to be wound and the metal belt during the winding process is reduced, resulting in reduced adsorption of dust or pollutant particles in the environment. The problem that static electricity adsorbs dust or pollutant particles in the environment due to mutual friction during the winding process of the body to be wound and the metal belt is solved, resulting in an uneven surface of the body to be wound, a gap between the metal belt and the body to be wound, and signal leakage from the gap, resulting in signal attenuation and thus affecting the signal transmission efficiency, is avoided. Signal leakage from between the metal belt and the body to be wound is improved.

[0017] Furthermore, the vertical height of the rotating shaft is adjusted in the same direction according to the direction in which the metal belt is inclined to come off the rotating shaft, thereby solving the problem that the edge burrs of the metal belt that has partially come off the rotating shaft rub against the rotating shaft, causing the temperature of the metal belt to rise. Since the metal belt has a relatively strong thermal conductivity, when the metal belt is wrapped around the body to be wrapped, the metal belt transfers heat to the insulating layer of the body to be wrapped. The material of the insulating layer softens and collapses due to the heat, resulting in a gap between the insulating layer and the metal belt, causing the signal to leak from between the metal belt and the insulating layer, causing signal attenuation and thus affecting the signal transmission efficiency. The signal leakage from between the metal belt and the insulating layer is avoided, thereby improving the signal transmission efficiency.

[0018] Furthermore, by reducing the area of ​​the overlapping region based on the fact that the temperature of the rotating shaft is greater than the preset second temperature value and less than or equal to the preset third temperature value, and the diameter change is greater than the preset diameter change, the problem of the temperature of the metal strip rising due to the friction between the edge burrs of the metal strip that has partially escaped from the rotating shaft and the rotating shaft is solved. Since the metal strip has a relatively strong thermal conductivity, when the metal strip is wrapped around the body to be wrapped, the metal strip partially overlaps with the metal strip of the wrapped area in the body to be wrapped, causing the metal strip to transfer heat to the metal strip of the adjacent wrapped area, and the metal strip of the wrapped area transfers heat to the insulating layer of the corresponding wrapped area. The insulating layer of the wrapped area expands due to the heat, which causes the metal strip of the wrapped area to be stretched, which is manifested as the wrapped area The diameter increases, and the heat of the insulating layer that has been expanded by heat gradually dissipates, causing the insulating layer to begin to recover to its size before expansion, thereby causing a gap between the insulating layer that has recovered to its size before expansion and the metal tape in the wrapped area, causing the signal to leak from between the metal tape and the insulating layer, causing signal attenuation and thus affecting the signal transmission efficiency. By reducing the area of ​​the overlapping area between the metal tape and the metal tape in the wrapped area of ​​the body to be wrapped, the heat transfer speed between the metal tape and the metal tape in the wrapped area is reduced, so that the heat of the metal tape in the wrapped area is gradually dissipated before being transferred to the corresponding insulating layer in the wrapped area, thereby avoiding the thermal expansion of the insulating layer in the wrapped area, avoiding the signal leakage from between the metal tape and the insulating layer in the wrapped area, and improving the signal transmission efficiency.

[0019] Further, by comparing the temperature of the rotating shaft with a preset third temperature and comparing the diameter change amount with a preset diameter change amount, the degree of eccentric wear and heat generation of the metal strip is preliminarily determined to see if it meets the requirements. For those that do not meet the requirements, the radius difference amount of the metal strip on the rotating shaft is obtained. If the radius difference amount is greater than the preset radius difference amount, the wrapping angle is reduced, which reduces the contact area between the metal strip in the already wrapped area and the corresponding insulating layer, and reduces the friction between the metal strip and the insulating layer, solving the problem that due to too large a wrapping angle, the contact area between the metal strip in the already wrapped area and the corresponding insulating layer is too large, resulting in a large friction between the metal strip and the insulating layer, that is, the resistance on the metal strip wound around the rotating shaft is large, causing the metal strip wound around the rotating shaft to be forced to be tightened due to the resistance, and further causing the side of the metal strip wound around the rotating shaft away from the object to be wrapped to be pressed tightly and the side close to the object to be wrapped to be loose, resulting in an increase in the pressure between the rotating shaft and the metal strip on the side away from the object to be wrapped, resulting in an increase in the friction between the two. Therefore, due to frictional heat generation between the rotating shaft and the metal strip, the temperatures of both increase. Since the heat conduction ability of the metal strip is relatively strong, when the metal strip is wrapped around the object to be wrapped, the metal strip transfers the heat to the insulating layer of the object to be wrapped, and the material of the insulating layer is heated and softened and collapses, resulting in a gap between the insulating layer and the metal strip, causing signals to leak between the metal strip and the insulating layer, resulting in signal attenuation and thus affecting the signal transmission efficiency, and improving the signal transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is the overall flowchart of the wrapping method for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention; Figure 2 FIG. is the flowchart of determining the wrapping angle according to the radius difference amount of the metal strip wound around the rotating shaft in the wrapping method for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention; Figure 3 FIG. is the structural schematic diagram of the wrapping system for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention; Figure 4 FIG. is the structural schematic diagram of the radio frequency coaxial cable manufactured by the wrapping system for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention; DESCRIPTION OF THE REFERENCE NUMERALS: 1 - object to be wrapped, 2 - metal strip, 3 - rotating shaft, 4 - vertical moving assembly, 5 - horizontal moving assembly, 6 - rotating table, 7 - take-up roller, 8 - inner conductor, 9 - insulating layer, 10 - outer conductor layer, 11 - protective layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives and advantages of the present invention more clearly understood, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0023] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Please refer to Figure 1 、 Figure 2 as shown, which are respectively the overall flow chart of the winding method for manufacturing a radio frequency coaxial cable in an embodiment of the present invention and the flow chart for determining the winding angle according to the radius difference of the metal tape wound on the rotating shaft. The winding method for manufacturing a radio frequency coaxial cable in an embodiment of the present invention includes: Step S1, controlling the take-up reel to uniformly traction the to-be-wound body 1 made of the inner conductor 8 and the insulating layer 9 to the initial winding position. Optionally, when the winding equipment is under the conditions of a temperature of 20°C to 40°C, a winding angle of 30° to 45°, and a tension of the metal tape 2 of 20 N to 50 N, the optional range of the speed for the take-up reel to uniformly traction the to-be-wound body 1 is [120 m / min, 200 m / min].

[0026] Preferably, in this embodiment, when the winding equipment is under the conditions of a temperature of 20°C to 40°C, a winding angle of 30° to 45°, and a tension of the metal tape 2 of 20 N to 50 N, the preferred embodiment of the speed for the take-up reel to uniformly traction the to-be-wound body 1 is 150 m / min.

[0027] Those skilled in the art can understand that [120m / min, 200m / min] and 150m / min are several alternative embodiments and preferred embodiments in this implementation when the wrapping device is under the conditions of a temperature of 20°C to 40°C, a wrapping angle of 30° to 45°, and a tension of 20N to 50N for the metal strip 2. In actual application or implementation, those skilled in the art can adaptively adjust the speed of the take-up reel for uniformly pulling the object to be wrapped 1 according to the actual application environment and application scenario.

[0028] Step S2, start the wrapping device and cooperate with the take-up reel to wind the metal strip 2 in the wrapping device around the object to be wrapped 1 at a predetermined wrapping angle from the initial wrapping position for wrapping test of the object to be wrapped 1; Step S3, collect the diameter of the object to be wrapped 1 with the metal strip 2 wound thereon during the wrapping test; Step S4, determine the surface wrapping state of the object to be wrapped 1 according to the diameter; Step S5, determine the wrapping treatment method based on the surface wrapping state, including adjusting the moving speed of the object to be wrapped 1, or determining the wear treatment method of the rotating shaft 3 according to the temperature of the rotating shaft 3 of the wrapping device and the diameter change amount of the adjacent area of the current wrapping area, including adjusting the vertical height of the rotating shaft 3 / adjusting the area of the overlapping area, or determining the wrapping angle according to the radius difference amount of the metal strip 2 wound on the rotating shaft 3. When the metal strip 2 is wound around the object to be wrapped 1, there will be an overlapping area between the metal strips 2; Specifically, the diameter change amount of the adjacent area of the current wrapping area is the difference between the diameter of the adjacent area of the current wrapping area at the start time of a single detection cycle of the wrapping test and the diameter at the end time of the single detection cycle.

[0029] A single area is: the overlapping area with the object to be wrapped 1 that the metal strip 2 passes through after one circle of wrapping from the sampling straight line and intersects with the sampling straight line again. The sampling straight line is the intersecting straight line between the metal strip 2 wound on the surface of the object to be wrapped 1 and the axial section of the object to be wrapped 1.

[0030] Optionally, when the wrapping device is under the external environmental conditions of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, the optional range of the cycle length of the detection cycle is [10s, 30s].

[0031] Preferably, in this embodiment, when the wrapping device is under the external environmental conditions of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, the preferred embodiment of the cycle length of the detection cycle is 25s.

[0032] Those skilled in the art can understand that [10s, 30s] and 25s are respectively several alternative embodiments and preferred embodiments when the winding device is in an external environment with a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH. In actual application or implementation, those skilled in the art can adaptively adjust the cycle length of the detection cycle according to the actual application environment and application scenario.

[0033] Step S6, actually wind the body to be wound 1 according to the winding processing method to form an outer conductor layer 10; Step S7, wind the strip on the outside of the outer conductor layer 10 to form a protective layer 11, and output the finished radio frequency coaxial cable; Wherein, the radius difference of the metal strip 2 on the rotating shaft 3 is the difference between the maximum distance from the outermost side surface of the metal strip 2 wound on the rotating shaft 3 to the rotating shaft 3 and the minimum distance from the outermost side surface of the metal strip 2 wound on the rotating shaft 3 to the rotating shaft 3.

[0034] Specifically, the body to be wound 1 includes an inner conductor 8 and an insulating layer 9.

[0035] The inner conductor 8 is made of copper or copper alloy material with high conductivity, and is made into a wire with the required diameter through a wire drawing process. The optional types of materials for the insulating layer 9 are polyethylene (PE), polytetrafluoroethylene (PTFE), and foamed polyethylene.

[0036] The manufacturing process of the body to be wound 1 includes: Heat the solid polymer material to a molten state through an extruder, and under the pressure of the screw, continuously extrude the molten polymer material to wrap on the surface of the inner conductor 8 to form an integrated insulating layer 9; After cooling and shaping to 50°C to 60°C, the body to be wound 1 is finally formed.

[0037] Specifically, the optional types of materials for the strip are aluminum-plastic composite tape, polyvinyl chloride (PVC), or polyurethane.

[0038] Specifically, the determining the surface winding state of the body to be wound 1 according to the diameter includes: Compare the diameter with a preset first diameter; Determine that the body to be wound 1 is in an abnormal winding state according to the diameter being greater than the preset first diameter; Determine that the wound body is in a normal winding state according to the diameter being less than or equal to the preset first diameter.

[0039] Specifically, the adjusting the moving speed of the body to be wound 1 includes: Compare the diameter with the preset first diameter and the preset second diameter respectively; According to the diameter being greater than the preset first diameter and less than or equal to the preset second diameter, reduce the moving speed of the object to be wrapped 1; Wherein, the preset first diameter is less than the preset second diameter.

[0040] Specifically, the moving speed of the object to be wrapped 1 is negatively correlated with the diameter.

[0041] In implementation, when the wrapping device is in an external environmental condition of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, when the value by which the diameter is greater than the preset first diameter is within 0.1 mm, adjust the moving speed of the object to be wrapped 1 to 0.9 times the current moving speed of the object to be wrapped 1; when the value by which the diameter is greater than the preset first diameter exceeds 0.1 mm, for every 0.1 mm exceeded, adjust the moving speed of the object to be wrapped 1 to 0.9 times the current moving speed of the object to be wrapped 1; for example, in a possible embodiment, the value by which the diameter is greater than the preset first diameter is 0.2 mm, and at this time the moving speed of the object to be wrapped 1 is reduced to 0.9×0.9 = 0.81 times the original speed.

[0042] Specifically, adjusting the vertical height of the rotating shaft 3 includes: Compare the diameter with the preset second diameter; Based on the diameter being greater than the preset second diameter, preliminarily determine that the influence degree of the heating of the metal strip 2 on the softening of the insulating layer 9 does not meet the requirements, and obtain the temperature of the rotating shaft 3 and the diameter change amount of the adjacent area of the current wrapping area; Compare the temperature of the rotating shaft 3 and the diameter change amount with a preset first temperature value, a preset second temperature value, and a preset diameter change amount respectively; Based on the temperature of the rotating shaft 3 being greater than the preset first temperature value and less than or equal to the preset second temperature value, and the diameter change amount being less than or equal to the preset diameter change amount, further determine that the influence degree of the heating of the metal strip 2 on the softening of the insulating layer 9 does not meet the requirements, and adjust the vertical height of the rotating shaft 3 in the same direction as the slipping tendency direction of the metal strip 2 on the rotating shaft 3; Wherein, the preset first temperature value is less than the preset second temperature value.

[0043] In implementation, when the wrapping device is under the external environmental conditions of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, when the temperature of the rotating shaft 3 is greater than the preset first temperature value by within 1°C, if the tendency direction of the metal strip 2 to come off the rotating shaft 3 is vertically upward, the vertical height of the rotating shaft 3 is adjusted to 1.1 times the current vertical height of the rotating shaft 3; if the tendency direction of the metal strip 2 to come off the rotating shaft 3 is vertically downward, the vertical height of the rotating shaft 3 is adjusted to 0.9 times the current vertical height of the rotating shaft 3. When the temperature of the rotating shaft 3 is greater than the preset first temperature value by more than 1°C, if the tendency direction of the metal strip 2 to come off the rotating shaft 3 is vertically upward, for every 1°C exceeded, the vertical height of the rotating shaft 3 is adjusted to 1.1 times the current vertical height of the rotating shaft 3; if the tendency direction of the metal strip 2 to come off the rotating shaft 3 is vertically downward, for every 1°C exceeded, the vertical height of the rotating shaft 3 is adjusted to 0.9 times the current vertical height of the rotating shaft 3. For example, in a possible embodiment, the temperature of the rotating shaft 3 is greater than the preset first temperature value by 2°C and the tendency direction of the metal strip 2 to come off the rotating shaft 3 is vertically downward. At this time, the vertical height of the rotating shaft 3 is reduced to 0.9×0.9 = 0.81 times the original height.

[0044] Specifically, adjusting the area of the overlapping region includes: According to the temperature of the rotating shaft 3 being greater than the preset second temperature value and less than or equal to the preset third temperature value, and the diameter change amount being greater than the preset diameter change amount, the area of the overlapping region is reduced; Wherein, the preset second temperature value is less than the preset third temperature value.

[0045] Specifically, the area of the overlapping region has a negative correlation with the diameter change amount.

[0046] Optionally, when the wrapping device is under the external environmental conditions of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, the optional range of the preset first temperature value is [60°C, 80°C], the optional range of the preset second temperature value is [81°C, 100°C], the optional range of the preset third temperature value is [101°C, 120°C], and the optional range of the preset diameter change amount is [0.25mm, 0.30mm].

[0047] Preferably, in this embodiment, when the wrapping device is under the external environmental conditions of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, the preferred embodiment of the preset first temperature value is 70°C, the preferred embodiment of the preset second temperature value is 90°C, the preferred embodiment of the preset third temperature value is 110°C, and the preferred embodiment of the preset diameter change amount is 0.28mm.

[0048] Those skilled in the art can understand that [60°C, 80°C], [81°C, 100°C], [101°C, 120°C], [0.25 mm, 0.30 mm], 70°C, 90°C, 110°C, and 0.28 mm are several alternative embodiments and preferred embodiments when the wrapping device is under the external environmental conditions of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH. In actual application or implementation, those skilled in the art can adaptively adjust the preset first temperature value, the preset second temperature value, the preset third temperature value, and the preset diameter change amount according to the actual application environment and application scenario.

[0049] In implementation, when the wrapping device is under the external environmental conditions of a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, when the value by which the diameter change amount is greater than the preset diameter change amount is within 0.1 mm, adjust the area of the overlapping region to 0.8 times the current area of the overlapping region; when the value by which the diameter change amount is greater than the preset diameter change amount exceeds 0.1 mm, for every 0.1 mm exceeded, adjust the area of the overlapping region to 0.8 times the current area of the overlapping region; for example, in a possible embodiment, the value by which the diameter change amount is greater than the preset diameter change amount is 0.2 mm, and at this time the area of the overlapping region is reduced to 0.8×0.8 = 0.64 times the original.

[0050] Specifically, determining the wrapping angle according to the radius difference amount of the metal strip 2 wound around the rotating shaft 3 includes: Comparing the temperature of the rotating shaft 3 with the preset third temperature value; If the temperature of the rotating shaft 3 is greater than the preset third temperature value, and the diameter change amount is less than or equal to the preset diameter change amount, preliminarily determine that the eccentric wear and heat generation degree of the metal strip 2 does not meet the requirements, and obtain the radius difference amount of the metal strip 2 on the rotating shaft 3; Comparing the radius difference amount with the preset radius difference amount; If the radius difference amount is greater than the preset radius difference amount, further determine that the eccentric wear and heat generation degree of the metal strip 2 does not meet the requirements, and reduce the wrapping angle.

[0051] Specifically, the wrapping angle has a negative correlation with the radius difference amount.

[0052] Optionally, when the wrapping device is in an external environmental condition of temperature 20°C to 40°C and humidity 40%RH to 60%RH, the optional range of the preset first diameter is [0.1 mm, 0.3 mm], the optional range of the preset second diameter is [0.4 mm, 0.5 mm], and the optional range of the preset radius difference is [0.4 mm, 0.6 mm].

[0053] Preferably, in this embodiment, when the wrapping device is in an external environmental condition of temperature 20°C to 40°C and humidity 40%RH to 60%RH, the preferred embodiment of the preset first diameter is 0.2 mm, the preferred embodiment of the preset second diameter is 0.4 mm, and the preferred embodiment of the preset radius difference is 0.5 mm.

[0054] Those skilled in the art can understand that [0.1 mm, 0.3 mm], [0.4 mm, 0.5 mm], [0.4 mm, 0.6 mm], 0.2 mm, 0.4 mm, and 0.5 mm are several optional and preferred embodiments of the wrapping device in an external environmental condition of temperature 20°C to 40°C and humidity 40%RH to 60%RH. In actual application or implementation, those skilled in the art can adaptively adjust the preset first diameter, the preset second diameter, and the preset radius difference according to the actual application environment and application scenario.

[0055] In implementation, when the wrapping device is in an external environmental condition of temperature 20°C to 40°C and humidity 40%RH to 60%RH, when the value of the radius difference greater than the preset radius difference is within 0.1 mm, the current wrapping angle is reduced by 1°; when the value of the radius difference greater than the preset radius difference exceeds 0.1 mm, the current wrapping angle is reduced by 1° for every 0.1 mm exceeded; for example, in a possible embodiment, the value of the radius difference greater than the preset radius difference is 0.3 mm, and at this time the wrapping angle is reduced by 3°.

[0056] In implementation, by adjusting the moving speed of the object 1 to be wrapped, the relative friction speed between the object 1 to be wrapped and the metal strip 2 is reduced, the number of frictions per unit time between the object 1 to be wrapped and the metal strip 2 is decreased, the rate of electron transfer is lowered, the amount of static electricity generated due to mutual friction during the wrapping process of the object 1 to be wrapped and the metal strip 2 is reduced, resulting in a decrease in the adsorption of dust or pollutant particles in the environment, solving the problem that during the wrapping process of the object 1 to be wrapped and the metal strip 2, static electricity is generated due to mutual friction, adsorbing dust or pollutant particles in the environment, resulting in an uneven surface of the object 1 to be wrapped, resulting in a gap between the metal strip 2 and the object 1 to be wrapped, resulting in signal leakage from the gap, resulting in signal attenuation and thus affecting the signal transmission efficiency, avoiding signal leakage between the metal strip 2 and the object 1 to be wrapped, and improving the signal transmission efficiency.

[0057] In implementation, the vertical height of the rotating shaft 3 is adjusted in the same direction as the direction of the tendency of the metal strip 2 to come off the rotating shaft 3, solving the problem that the edge burrs of the partially detached metal strip 2 on the rotating shaft 3 rub against the rotating shaft 3, resulting in an increase in the temperature of the metal strip 2. Since the heat conduction ability of the metal strip 2 is relatively strong, when the metal strip 2 is wrapped around the object 1 to be wrapped, the metal strip 2 transfers heat to the insulating layer 9 of the object 1 to be wrapped, and the material of the insulating layer 9 becomes soft and collapses due to heat, resulting in a gap between the insulating layer 9 and the metal strip 2, resulting in signal leakage between the metal strip 2 and the insulating layer 9, resulting in signal attenuation and thus affecting the signal transmission efficiency, avoiding signal leakage between the metal strip 2 and the insulating layer 9, and improving the signal transmission efficiency.

[0058] In implementation, by reducing the area of ​​the overlapping region based on the fact that the temperature of the rotating shaft 3 is greater than the preset second temperature value and less than or equal to the preset third temperature value, and the diameter change is greater than the preset diameter change, the problem of the temperature of the metal strip 2 rising due to the friction between the edge burrs of the metal strip 2 that has partially escaped from the rotating shaft 3 and the rotating shaft 3 is solved. Since the metal strip 2 has a relatively strong thermal conductivity, when the metal strip 2 is wrapped around the body 1 to be wrapped, the metal strip 2 partially overlaps with the metal strip 2 in the wrapped area of ​​the body 1 to be wrapped, causing the metal strip 2 to transfer heat to the metal strip 2 in the adjacent wrapped area, and the metal strip 2 in the wrapped area transfers heat to the insulating layer 9 of the corresponding wrapped area. The insulating layer 9 in the wrapped area expands due to the heat, which causes the metal strip 2 in the wrapped area to be stretched, which is manifested as the wrapped area The diameter of the insulating layer 9 increases, and the heat of the insulating layer 9 that has been expanded by the heat gradually dissipates, causing the insulating layer 9 to begin to recover to its size before expansion, thereby causing a gap between the insulating layer 9 that has recovered to its size before expansion and the metal tape 2 in the wrapped area, causing the signal to leak from between the metal tape 2 and the insulating layer 9, resulting in signal attenuation and thus affecting the signal transmission efficiency. By reducing the area of ​​the overlapping area between the metal tape 2 and the metal tape 2 in the wrapped area of ​​the body 1 to be wrapped, the heat transfer speed between the metal tape 2 and the metal tape 2 in the wrapped area is reduced, so that the heat of the metal tape 2 in the wrapped area is gradually dissipated before being transferred to the insulating layer 9 in the corresponding wrapped area, thereby avoiding the insulating layer 9 in the wrapped area from expanding by heat, avoiding the signal from leaking from between the metal tape 2 in the wrapped area and the insulating layer 9, and improving the signal transmission efficiency.

[0059] In implementation, by comparing the temperature of the rotating shaft 3 with a preset third temperature and comparing the diameter change amount with a preset diameter change amount, the degree of eccentric wear and heat generation of the metal strip 2 is preliminarily determined to see if it meets the requirements. For those that do not meet the requirements, the radius difference amount of the metal strip 2 on the rotating shaft 3 is obtained. If the radius difference amount is greater than the preset radius difference amount, the winding angle is reduced, which reduces the contact area between the metal strip 2 in the already wound area and the corresponding insulating layer 9, and reduces the friction force between the metal strip 2 and the insulating layer 9, solving the problem that due to too large a winding angle, the contact area between the metal strip 2 in the already wound area and the corresponding insulating layer 9 is too large, resulting in a large friction force between the metal strip 2 and the insulating layer 9, that is, the resistance on the metal strip 2 wound around the rotating shaft 3 is large, causing the metal strip 2 wound around the rotating shaft 3 to be forced to be tightened due to the resistance, and further causing the side of the metal strip 2 wound around the rotating shaft 3 away from the object to be wound 1 to be pressed tightly and the side close to the object to be wound 1 to be loose, resulting in an increase in the pressure between the rotating shaft 3 and the metal strip 2 on the side away from the object to be wound 1, resulting in an increase in the friction force between the two. Therefore, heat is generated due to friction between the rotating shaft 3 and the metal strip 2, and the temperatures of both increase. Since the heat conduction ability of the metal strip 2 is relatively strong, when the metal strip 2 is wound around the object to be wound 1, the metal strip 2 transfers heat to the insulating layer 9 of the object to be wound 1, and the material of the insulating layer 9 is heated and softened and collapses, resulting in a gap between the insulating layer 9 and the metal strip 2, causing signals to leak from between the metal strip 2 and the insulating layer 9, resulting in signal attenuation and thus affecting the signal transmission efficiency. The signal transmission efficiency is improved.

[0060] Please refer to Figure 3 、 Figure 4 as shown, which are respectively the structural schematic diagram of the winding system for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention and the structural schematic diagram of the manufactured radio frequency coaxial cable; The winding system for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention includes: A winding device for actually winding an object to be wound 1 to form an outer conductor layer 10, including a rotating shaft 3 circumferentially wound with a metal strip 2, a vertical moving component 4 connected to the rotating shaft 3 for adjusting the vertical height of the rotating shaft 3, and a horizontal moving component 5 connected to the vertical moving component 4 for adjusting the horizontal distance between the vertical moving component 4 and the object to be wound 1; In implementation, the vertical moving component 4 can be an electric telescopic rod. The principle of the electric telescopic rod adjusting the vertical movement of the rotating shaft 3 is that the expansion and contraction of the electric telescopic rod drives the rotating shaft 3 to move along the vertical direction. The horizontal moving component 5 can be a belt conveyor. The principle of the belt conveyor adjusting the horizontal movement of the vertical moving component 4 is that the driving roller in the belt conveyor rotates to drive the horizontally arranged belt to move horizontally, thereby driving the vertical moving component 4 connected to the belt to move along the horizontal direction.

[0061] Specifically, by horizontally moving the component 5 away from the object 1 to be wrapped, the horizontal distance between the vertical moving component 4 and the object 1 to be wrapped is increased, thereby reducing the wrapping angle.

[0062] In implementation, the wrapping device further includes a rotating table 6, which is connected to the horizontal moving component 5 for rotating the horizontal moving component 5 around the object 1 to be wrapped; A take-up reel, which is arranged at the output end of the wrapping device for changing the vertical wrapping position of the object 1 to be wrapped, including a take-up roller 7 arranged above the rotating shaft 3 for adjusting the moving speed of the object 1 to be wrapped; Specifically, by reducing the rotation speed of the take-up roller 7, the moving speed of the object 1 to be wrapped is reduced, and by increasing the rotation speed of the take-up roller 7, the area of the overlapping region is reduced.

[0063] A detection unit, which is connected to the wrapping device for detecting the diameter of the object 1 to be wrapped with the metal strip 2 wound thereon, the diameter of the adjacent region of the current wrapping region, the radius of the metal strip 2 wound on the rotating shaft 3, and the temperature of the rotating shaft 3, including: A first distance measuring sensor, which is arranged above the object wrapping position for detecting the diameters of the metal strip 2 and the object 1 to be wrapped; A second distance measuring sensor, which is arranged above the object wrapping position for detecting the diameter of the adjacent region of the current wrapping region; A third distance measuring sensor, which is arranged above the rotating shaft 3 for detecting the radius of the metal strip 2 wound on the rotating shaft 3; A temperature sensor, which is arranged above the rotating shaft 3 for detecting the temperature of the rotating shaft 3; A control unit, which is respectively connected to the wrapping device, the take-up reel, and the detection unit for determining the surface wrapping state of the object 1 to be wrapped with the metal strip 2 wound thereon, determining the wrapping processing method based on the surface wrapping state, including adjusting the moving speed of the object 1 to be wrapped, or determining the wear processing method of the rotating shaft 3 according to the temperature of the rotating shaft 3 of the wrapping device and the change amount of the diameter of the adjacent region of the current wrapping region, including adjusting the vertical height of the rotating shaft 3 / adjusting the area of the overlapping region, or determining the wrapping angle according to the radius difference amount of the metal strip 2 wound on the rotating shaft 3.

[0064] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A wrapping method for manufacturing a radio frequency coaxial cable, characterized in that, include: Control the take-up frame to uniformly pull the to-be-wound body made of the inner conductor and the insulating layer to the initial winding position; Start the wrapping device to cooperate with the take-up frame to wrap the metal strip in the wrapping device onto the body to be wrapped at a predetermined wrapping angle from the initial wrapping position to perform a wrapping test on the body to be wrapped; Collecting the diameter of the body to be wrapped with the metal tape in the wrapping test; Determining the surface wrapping state of the body to be wrapped according to the diameter; Determine the wrapping treatment method based on the surface wrapping state, including adjusting the moving speed of the body to be wrapped, or determine the shaft wear treatment method according to the temperature of the shaft of the wrapping device and the diameter change of the adjacent area of ​​the current wrapping area, including adjusting the vertical height of the shaft / adjusting the area of ​​the overlapping area, Or, the wrapping angle is determined according to the radius difference of the metal strip wound around the rotating shaft; Performing actual wrapping on the body to be wrapped according to the wrapping processing method to form an outer conductor layer; Wrapping the tape around the outer side of the outer conductor layer to form a protective layer, and outputting a finished radio frequency coaxial cable; The radius difference of the metal belt on the rotating shaft is the difference between the maximum distance between the outermost side surface of the metal belt wound around the rotating shaft and the rotating shaft and the minimum distance between the outermost side surface of the metal belt wound around the rotating shaft and the rotating shaft.

2. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 1, characterized in that, The step of determining the surface wrapping state of the body to be wrapped according to the diameter includes: comparing the diameter with a predetermined first diameter; Determining that the body to be wrapped is in an abnormal wrapping state according to the diameter being greater than the preset first diameter; The wrapping body is determined to be in a normal wrapping state based on the diameter being less than or equal to the preset first diameter.

3. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 2, characterized in that, The step of adjusting the moving speed of the package to be wound comprises: Comparing the diameter with the preset first diameter and the preset second diameter respectively; According to the diameter being greater than the preset first diameter and less than or equal to the preset second diameter, reducing the moving speed of the package to be wound; Wherein, the preset first diameter is smaller than the preset second diameter.

4. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 3, wherein The moving speed of the body to be wound is negatively correlated with the diameter.

5. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 4, characterized in that, The adjusting the vertical height of the rotating shaft comprises: comparing the diameter with the predetermined second diameter; According to the diameter being greater than the preset second diameter, it is preliminarily determined that the degree of softening of the insulating layer caused by the heating of the metal strip does not meet the requirements, and the temperature of the rotating shaft and the diameter change of the adjacent area of ​​the current wrapping area are obtained; Comparing the temperature of the rotating shaft and the diameter change with a preset first temperature value, a preset second temperature value and a preset diameter change respectively; According to the fact that the temperature of the rotating shaft is greater than the preset first temperature value and less than or equal to the preset second temperature value, and the diameter change is less than or equal to the preset diameter change, it is further determined that the degree of softening of the insulating layer caused by the heating of the metal strip does not meet the requirements, and the vertical height of the rotating shaft is adjusted in the same direction according to the direction of the metal strip's tendency to come off the rotating shaft; Wherein, the preset first temperature value is lower than the preset second temperature value.

6. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 5, characterized in that, The adjusting the area of ​​the overlapping region comprises: When the temperature of the rotating shaft is greater than the preset second temperature value and less than or equal to the preset third temperature value, and the diameter change amount is greater than the preset diameter change amount, the area of the overlapping region is reduced; Wherein, the preset second temperature value is less than the preset third temperature value.

7. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 6, characterized in that, The area of the overlapping region is negatively correlated with the diameter change amount.

8. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 7, wherein Determining the winding angle according to the radius difference amount of the metal strip wound on the rotating shaft includes: Comparing the temperature of the rotating shaft with the preset third temperature value; If the temperature of the rotating shaft is greater than the preset third temperature value, and the diameter change amount is less than or equal to the preset diameter change amount, it is preliminarily determined that the degree of eccentric wear and heat generation of the metal strip does not meet the requirements, and the radius difference amount of the metal strip on the rotating shaft is obtained; Comparing the radius difference amount with the preset radius difference amount; If the radius difference amount is greater than the preset radius difference amount, it is determined that the degree of eccentric wear and heat generation of the metal strip does not meet the requirements, and the winding angle is reduced.

9. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 8, characterized in that, The winding angle is negatively correlated with the radius difference amount.

10. A wrapping system using the wrapping method for manufacturing a radio frequency coaxial cable according to any one of claims 1-9, characterized in that, Including: A winding device for actually winding a body to be wound to form an outer conductor layer, including a rotating shaft circumferentially wound with a metal strip, a vertical moving component connected to the rotating shaft for adjusting the vertical height of the rotating shaft, and a horizontal moving component connected to the vertical moving component for adjusting the horizontal distance between the vertical moving component and the body to be wound; A take-up reel, which is arranged at the output end of the winding device for changing the vertical winding position of the body to be wound, including a take-up roller arranged above the rotating shaft for adjusting the moving speed of the body to be wound; A detection unit, which is connected to the winding device for detecting the diameter of the body to be wound wound with a metal strip, the diameter of an adjacent region of the current winding region, the radius of the metal strip wound on the rotating shaft, and the temperature of the rotating shaft; A control unit, which is respectively connected to the winding device, the take-up reel and the detection unit for determining the surface winding state of the body to be wound according to the diameter of the body to be wound wound with a metal strip, and determining a winding treatment method based on the surface winding state, including adjusting the moving speed of the body to be wound, or determining a rotating shaft wear treatment method according to the temperature of the rotating shaft of the winding device and the diameter change amount of an adjacent region of the current winding region, including adjusting the vertical height of the rotating shaft / adjusting the area of the overlapping region, or determining the winding angle according to the radius difference amount of the metal strip wound on the rotating shaft.

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