A wrapping method and system for manufacturing radio frequency coaxial cable

Abstract

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, comprising: controlling a take-up frame to uniformly pull a body to be wrapped, made of an inner conductor and an insulating layer, to an initial wrapping position; starting a wrapping device in cooperation with the take-up frame to wrap a 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 strip during the wrapping test; determining the surface wrapping state of the body to be wrapped based on the diameter; determining a wrapping treatment method based on the surface wrapping state, and actually wrapping the body to be wrapped according to the wrapping treatment method to form an outer conductor layer. The present invention prevents signal leakage between the metal strip and the body to be wrapped, thereby improving signal transmission efficiency.

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, 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 onto the periphery of the inner skin layer to form a foamed insulation 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 insulation layer; and forming an outer conductor outside the outer skin layer.

[0004] It can be seen from this 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 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 is used to overcome the problem in the prior art that during the wrapping process of the body to be wrapped and the metal tape, electrostatic adsorption of dust or pollutant particles in the environment is generated 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 objectives, the present invention provides, in one aspect, a wrapping method for manufacturing a radio frequency coaxial cable, comprising:

[0007] Control the take-up frame to uniformly pull the body to be wound, which is made of the inner conductor and the insulation layer, to the initial winding position;

[0008] Starting the wrapping device to cooperate with the take-up frame to wrap the metal strip in the wrapping device onto the object to be wrapped at a predetermined wrapping angle starting from the initial wrapping position to perform a wrapping test on the object to be wrapped;

[0009] collecting the diameter of the body to be wrapped with the metal strip in the wrapping test;

[0010] determining the surface wrapping state of the body to be wrapped according to the diameter;

[0011] Determining a wrapping treatment method based on the surface wrapping state, including adjusting the moving speed of the object to be wrapped, or determining a shaft wear treatment method based on 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,

[0012] Alternatively, the wrapping angle is determined according to a difference in radius of the metal strip wound around the rotating shaft;

[0013] Performing actual wrapping on the body to be wrapped according to the wrapping processing method to form an outer conductor layer;

[0014] 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;

[0015] 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.

[0016] Furthermore, the determining of the surface wrapping state of the body to be wrapped according to the diameter includes:

[0017] comparing the diameter with a predetermined first diameter;

[0018] Determining that the object to be wrapped is in an abnormal wrapping state based on a diameter being greater than the preset first diameter;

[0019] 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.

[0020] Furthermore, the adjusting the moving speed of the body to be wound includes:

[0021] Comparing the diameter with the preset first diameter and the preset second diameter respectively;

[0022] 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 body to be wound;

[0023] Wherein, the preset first diameter is smaller than the preset second diameter.

[0024] Furthermore, the moving speed of the body to be wound is negatively correlated with the diameter.

[0025] Furthermore, the adjusting the vertical height of the rotating shaft includes:

[0026] comparing the diameter with the predetermined second diameter;

[0027] Based on the diameter being greater than the preset second diameter, it is preliminarily determined that the degree of softening of the insulation 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;

[0028] 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;

[0029] Based on 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;

[0030] Wherein, the preset first temperature value is lower than the preset second temperature value.

[0031] Furthermore, adjusting the area of ​​the overlapping region includes:

[0032] 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;

[0033] Wherein, the preset second temperature value is lower than the preset third temperature value.

[0034] Furthermore, the area of ​​the overlapping region is negatively correlated with the diameter change.

[0035] Furthermore, determining the wrapping angle according to the radius difference of the metal strip wound on the rotating shaft includes:

[0036] comparing the temperature of the rotating shaft with a preset third temperature value;

[0037] 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;

[0038] comparing the radius difference with a preset radius difference;

[0039] 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 strip does not meet the requirements, and the wrapping angle is reduced.

[0040] Furthermore, the wrapping angle is negatively correlated with the radius difference.

[0041] In another aspect, the present invention further provides a wrapping system for manufacturing a radio frequency coaxial cable, comprising:

[0042] A wrapping device for actually wrapping the body to be wrapped to form an outer conductor layer, comprising a rotating shaft with a metal belt wound circumferentially, a vertical moving assembly connected to the rotating shaft for adjusting the vertical height of the rotating shaft, and a horizontal moving assembly connected to the vertical moving assembly for adjusting the horizontal distance between the vertical moving assembly and the body to be wrapped;

[0043] 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 body to be wrapped, and includes a wire take-up roller arranged above the rotating shaft and used to adjust the moving speed of the body to be wrapped;

[0044] a detection unit connected to the wrapping device, configured to detect the diameter of the body to be 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;

[0045] a control unit connected to the wrapping device, the take-up frame and the detection unit, respectively, for determining 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 determining a wrapping treatment method based on the surface wrapping state, including adjusting the moving speed of the body to be wrapped, or determining a 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 determining the wrapping angle according to the radius difference of the metal strip wound on the shaft.

[0046] Compared with the prior art, the beneficial effect of the present invention is 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 by 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. It solves 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, resulting in an uneven surface of the body to be wound, a gap between the metal belt and the body to be wound, and leakage of signals from the gap, resulting in signal attenuation and thus affecting signal transmission efficiency. It avoids signal leakage between the metal belt and the body to be wound, and improves signal transmission efficiency.

[0047] Furthermore, the vertical height of the rotating shaft is adjusted in the same direction according to the direction in which the metal strip tends to come off the rotating shaft, thereby solving the problem that the edge burrs of the metal strip that has partially come off the rotating shaft rub against the rotating shaft, causing the temperature of the metal strip to rise. 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 transfers heat to the insulating layer of the body to be wrapped. The material of the insulating layer softens and collapses due to heat, resulting in a gap between the insulating layer and the metal strip, causing the signal to leak from between the metal strip and the insulating layer, resulting in signal attenuation and thus affecting the signal transmission efficiency. The signal leakage from between the metal strip and the insulating layer is avoided, thereby improving the signal transmission efficiency.

[0048] 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 partially detached metal strip on 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 already wrapped area in the body to be wrapped, causing the metal strip to transfer heat to the metal strip of the adjacent already wrapped area, and the metal strip of the already wrapped area transfers heat to the insulating layer of the corresponding already wrapped area. The insulating layer of the already wrapped area expands due to the heat, thereby causing the metal strip of the already wrapped area to be stretched, which manifests as the already 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, resulting in 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 gradually dissipates before being transferred to the insulating layer of the corresponding wrapped area, thereby avoiding the thermal expansion of the insulating layer in the wrapped area, avoiding the signal leakage from the metal tape in the wrapped area and the insulating layer, and improving the signal transmission efficiency.

[0049] Furthermore, by comparing the temperature of the rotating shaft with a preset third temperature and the diameter change with a preset diameter change, it is preliminarily determined whether the degree of eccentric wear and heating of the metal belt meets the requirements. If it does not meet the requirements, the radius difference of the metal belt on the rotating shaft is obtained. According to the fact that the radius difference is greater than the preset radius difference, the wrapping angle is reduced, the contact area between the metal belt in the wrapped area and the corresponding insulating layer is reduced, and the friction between the metal belt and the insulating layer is reduced, which solves the problem that the contact area between the metal belt in the wrapped area and the corresponding insulating layer is too large due to the excessive wrapping angle, resulting in a large friction between the metal belt and the insulating layer, that is, the metal belt wound on the rotating shaft is subjected to a large resistance, resulting in the metal belt wound on the rotating shaft being The belt is forced to tighten due to the resistance, which causes the metal belt wrapped on the rotating shaft to be pressed on the side away from the body to be wrapped, and loosens on the side close to the body to be wrapped, resulting in an increase in pressure between the rotating shaft and the metal belt on the side away from the body to be wrapped, resulting in an increase in friction between the two. Therefore, the rotating shaft and the metal belt generate heat due to friction, and the temperatures of both increase. Since the metal belt has a strong thermal conductivity, when the metal belt is wrapped around the body to be wrapped, the metal belt transfers heat to the insulation layer of the body to be wrapped. The material of the insulation layer softens and collapses due to heat, resulting in a gap between the insulation layer and the metal belt, causing signals to leak from between the metal belt and the insulation layer, resulting in signal attenuation and thus affecting the signal transmission efficiency, thereby improving the signal transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is an overall flow chart of a wrapping method for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention;

[0051] Figure 2 This is a flow chart of determining a wrapping angle according to a radius difference of a metal tape wrapped around a rotating shaft in a wrapping method for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention;

[0052] Figure 3 Schematic diagram of the structure of a wrapping system for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention;

[0053] Figure 4 A schematic structural diagram of a radio frequency coaxial cable manufactured by a wrapping system for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention;

[0054] Description of reference numerals:

[0055] 1-body to be wound, 2-metal belt, 3-rotating shaft, 4-vertical moving component, 5-horizontal moving component, 6-rotating table, 7-take-up roller, 8-inner conductor, 9-insulating layer, 10-outer conductor layer, 11-protective layer. DETAILED DESCRIPTION

[0056] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0058] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the 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. Therefore, it cannot be understood as a limitation on the present invention.

[0059] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0060] See also Figure 1 、 Figure 2 As shown, they are respectively an overall flow chart of a wrapping method for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention, and a flow chart of determining a wrapping angle according to a radius difference of a metal strip wound on the rotating shaft;

[0061] The wrapping method for manufacturing a radio frequency coaxial cable according to an embodiment of the present invention includes:

[0062] Step S1, controlling the take-up frame to uniformly pull the to-be-wound body 1 made of the inner conductor 8 and the insulating layer 9 to an initial winding position;

[0063] Optionally, when the wrapping equipment is at a temperature of 20°C to 40°C, a wrapping angle of 30° to 45°, and a tension of the metal strip 2 of 20N to 50N, the optional range of the speed at which the take-up frame uniformly pulls the body 1 to be wrapped is [120m / min, 200m / min].

[0064] Preferably, in this embodiment, when the wrapping equipment is at a temperature of 20°C to 40°C, the wrapping angle is 30° to 45°, and the tension of the metal strip 2 is 20N to 50N, the preferred embodiment of the speed at which the take-up frame uniformly pulls the body 1 to be wrapped is 150m / min.

[0065] It can be understood by those skilled in the art that [120m / min, 200m / min] and 150m / min are several optional embodiments and preferred embodiments in this embodiment when the wrapping equipment is at a temperature of 20℃~40℃, the wrapping angle is 30°~45°, and the tension of the metal strip 2 is 20N~50N. In actual application or implementation, those skilled in the art can adaptively adjust the speed of the take-up frame uniformly pulling the body 1 to be wrapped according to the actual application environment and application scenario.

[0066] Step S2, starting the wrapping device to cooperate with the take-up frame to wrap the metal strip 2 in the wrapping device onto the to-be-wrapped body 1 at a predetermined wrapping angle starting from the initial wrapping position to perform a wrapping test on the to-be-wrapped body 1;

[0067] Step S3, collecting the diameter of the body 1 to be wrapped with the metal strip 2 in the wrapping test;

[0068] Step S4, determining the surface wrapping state of the body to be wrapped 1 according to the diameter;

[0069] Step S5: determining a wrapping treatment method based on the surface wrapping state, including adjusting the moving speed of the body 1 to be wrapped, or determining a wear treatment method for the shaft 3 according to the temperature of the shaft 3 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 3 / adjusting the area of ​​the overlapping area, or determining a wrapping angle according to the radius difference of the metal strip 2 wound on the shaft 3, wherein when the metal strip 2 is wrapped around the body 1 to be wrapped, there will be overlapping areas between the metal strips 2;

[0070] Specifically, the diameter change 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.

[0071] A single area is: the overlapping area where the metal strip 2 passes through the sampling straight line after one circle of wrapping and intersects with the sampling straight line again, and the sampling straight line is the intersection line of the metal strip 2 wrapped on the surface of the body 1 to be wrapped and the axial section of the body 1 to be wrapped.

[0072] Optionally, when the wrapping device is in an external environment with a temperature of 20° C. to 40° C. and a humidity of 40% RH to 60% RH, the optional range of the detection cycle length is [10s, 30s].

[0073] Preferably, in this embodiment, when the wrapping device is in an external environment with a temperature of 20° C. to 40° C. and a humidity of 40% RH to 60% RH, the preferred embodiment of the length of the detection cycle is 25 seconds.

[0074] It can be understood by those skilled in the art that [10s, 30s] and 25s are several optional embodiments and preferred embodiments respectively when the wrapping equipment is in the external environment conditions of temperature 20℃~40℃ and humidity 40%RH~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.

[0075] Step S6, actually wrapping the body to be wrapped 1 according to the wrapping processing method to form an outer conductor layer 10;

[0076] Step S7, wrapping the tape around the outer side of the outer conductor layer 10 to form a protective layer 11, and outputting a finished RF coaxial cable;

[0077] Among them, the radius difference of the metal belt 2 on the rotating shaft 3 is the difference between the maximum distance between the outermost side surface of the metal belt 2 wound on the rotating shaft 3 and the rotating shaft 3 and the minimum distance between the outermost side surface of the metal belt 2 wound on the rotating shaft 3 and the rotating shaft 3.

[0078] Specifically, the body 1 to be wound includes an inner conductor 8 and an insulating layer 9 .

[0079] The inner conductor 8 is made of high-conductivity copper or copper alloy, and is formed into a wire of the desired diameter through a wire drawing process. The insulating layer 9 can be made of polyethylene (PE), polytetrafluoroethylene (PTFE), or expanded polyethylene.

[0080] The manufacturing process of the body to be wound 1 includes:

[0081] The solid polymer material is heated to a molten state by an extruder, and the molten polymer material is continuously extruded and wrapped around the surface of the inner conductor 8 under the pressure of the screw to form an integrated insulating layer 9;

[0082] After cooling and shaping to 50°C to 60°C, the body 1 to be wrapped is finally formed.

[0083] Specifically, the optional types of materials for the strip are aluminum-plastic composite strip, polyvinyl chloride (PVC) or polyurethane.

[0084] Specifically, determining the surface wrapping state of the body to be wrapped 1 according to the diameter includes:

[0085] comparing the diameter with a predetermined first diameter;

[0086] According to the diameter being greater than the preset first diameter, it is determined that the body to be wound 1 is in an abnormal winding state;

[0087] 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.

[0088] Specifically, the adjusting the moving speed of the body to be wound 1 includes:

[0089] Comparing the diameter with the preset first diameter and the preset second diameter respectively;

[0090] 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 body to be wound 1;

[0091] Wherein, the preset first diameter is smaller than the preset second diameter.

[0092] Specifically, the moving speed of the body 1 to be wound is negatively correlated with the diameter.

[0093] During implementation, when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~60%RH, when the diameter is greater than the preset first diameter by less than 0.1mm, the moving speed of the body 1 to be wrapped is adjusted to 0.9 times the current moving speed of the body 1 to be wrapped; when the diameter is greater than the preset first diameter by more than 0.1mm, the moving speed of the body 1 to be wrapped is adjusted to 0.9 times the current moving speed of the body 1 to be wrapped for every 0.1mm increase; for example, in a possible embodiment, the diameter is greater than the preset first diameter by 0.2mm, and at this time, the moving speed of the body 1 to be wrapped is reduced to 0.9×0.9=0.81 times the original.

[0094] Specifically, adjusting the vertical height of the rotating shaft 3 includes:

[0095] comparing the diameter with the predetermined second diameter;

[0096] Based on the diameter being greater than the preset second diameter, it is preliminarily determined that the degree of softening of the insulating layer 9 by the heating of the metal strip 2 does not meet the requirements, and the temperature of the rotating shaft 3 and the diameter change of the adjacent area of ​​the current wrapping area are obtained;

[0097] Comparing the temperature of the rotating shaft 3 and the diameter change with a preset first temperature value, a preset second temperature value, and a preset diameter change, respectively;

[0098] According to the fact that the temperature of the rotating shaft 3 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 9 caused by the heating of the metal strip 2 does not meet the requirements, and the vertical height of the rotating shaft 3 is adjusted in the same direction according to the tendency of the metal strip 2 to come off the rotating shaft 3;

[0099] Wherein, the preset first temperature value is lower than the preset second temperature value.

[0100] In implementation, when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~60%RH, when the temperature of the rotating shaft 3 is greater than the value of the preset first temperature value within 1℃, if the metal strip 2 on the rotating shaft 3 has a tendency to escape vertically upward, the vertical height of the rotating shaft 3 is adjusted to 1.1 times the vertical height of the current rotating shaft 3; if the metal strip 2 on the rotating shaft 3 has a tendency to escape vertically downward, the vertical height of the rotating shaft 3 is adjusted to 0.9 times the vertical height of the current rotating shaft 3; when the temperature of the rotating shaft 3 is greater than the value of the preset first temperature value by more than 1℃, if the metal strip 2 on the rotating shaft 3 has a tendency to escape vertically downward, the vertical height of the rotating shaft 3 is adjusted to 0.9 times the vertical height of the current rotating shaft 3. The direction is vertically upward, and the vertical height of the rotating shaft 3 is adjusted to 1.1 times the current vertical height of the rotating shaft 3 for every 1°C increase. If the direction in which the metal belt 2 tends to escape on 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 for every 1°C increase. For example, in a possible embodiment, the temperature of the rotating shaft 3 is 2°C greater than the preset first temperature value and the direction in which the metal belt 2 tends to escape on 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 value.

[0101] Specifically, adjusting the area of ​​the overlapping region includes:

[0102] 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 being greater than the preset diameter change, reducing the area of ​​the overlapping region;

[0103] Wherein, the preset second temperature value is lower than the preset third temperature value.

[0104] Specifically, the area of ​​the overlapping region is negatively correlated with the diameter change.

[0105] Optionally, when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~60%RH, the optional range of the preset first temperature value is [60℃, 80℃], the optional range of the preset second temperature value is [81℃, 100℃], the optional range of the preset third temperature value is [101℃, 120℃], and the optional range of the preset diameter change is [0.25mm, 0.30mm].

[0106] Preferably, in this embodiment, when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~60%RH, the preferred embodiment of the preset first temperature value is 70℃, the preferred embodiment of the preset second temperature value is 90℃, the preferred embodiment of the preset third temperature value is 110℃, and the preferred embodiment of the preset diameter change is 0.28mm.

[0107] Those skilled in the art can understand that [60℃, 80℃], [81℃, 100℃], [101℃, 120℃], [0.25mm, 0.30mm], 70℃, 90℃, 110℃ and 0.28mm are several optional embodiments and preferred embodiments when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~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 according to the actual application environment and application scenario.

[0108] In implementation, when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~60%RH, when the diameter change is greater than the preset diameter change by less than 0.1mm, the area of ​​the overlapping area is adjusted to 0.8 times the area of ​​the current overlapping area; when the diameter change is greater than the preset diameter change by more than 0.1mm, the area of ​​the overlapping area is adjusted to 0.8 times the area of ​​the current overlapping area for every 0.1mm of excess; for example, in a possible embodiment, the diameter change is greater than the preset diameter change by 0.2mm, and at this time the area of ​​the overlapping area is reduced to 0.8×0.8=0.64 times the original.

[0109] Specifically, determining the wrapping angle according to the radius difference of the metal strip 2 wound on the rotating shaft 3 includes:

[0110] Comparing the temperature of the rotating shaft 3 with a preset third temperature value;

[0111] If the temperature of the rotating shaft 3 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 2 does not meet the requirements, and the radius difference of the metal belt 2 on the rotating shaft 3 is obtained;

[0112] comparing the radius difference with a preset radius difference;

[0113] 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 strip 2 does not meet the requirements, and the wrapping angle is reduced.

[0114] Specifically, the wrapping angle is negatively correlated with the radius difference.

[0115] Optionally, when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~60%RH, the optional range of the preset first diameter is [0.1mm, 0.3mm], the optional range of the preset second diameter is [0.4mm, 0.5mm], and the optional range of the preset radius difference is [0.4mm, 0.6mm].

[0116] Preferably, in this embodiment, when the wrapping equipment is in an external environment with a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, the preferred embodiment of the preset first diameter is 0.2mm, the preferred embodiment of the preset second diameter is 0.4mm, and the preferred embodiment of the preset radius difference is 0.5mm.

[0117] Those skilled in the art can understand that [0.1mm, 0.3mm], [0.4mm, 0.5mm], [0.4mm, 0.6mm], 0.2mm, 0.4mm and 0.5mm are several optional embodiments and preferred embodiments when the wrapping equipment is in an external environment with a temperature of 20℃~40℃ and a humidity of 40%RH~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.

[0118] In implementation, when the wrapping equipment is in an external environment with a temperature of 20°C to 40°C and a humidity of 40%RH to 60%RH, when the radius difference is greater than the preset radius difference by within 0.1mm, the current wrapping angle is reduced by 1°; when the radius difference is greater than the preset radius difference by more than 0.1mm, the current wrapping angle is reduced by 1° for every 0.1mm exceeding the preset radius difference; for example, in a possible embodiment, the radius difference is greater than the preset radius difference by 0.3mm, and at this time the wrapping angle is reduced by 3°.

[0119] During implementation, by adjusting the moving speed of the body to be wound 1, the relative friction speed between the body to be wound 1 and the metal belt 2 is reduced, the number of frictions per unit time between the body to be wound 1 and the metal belt 2 is reduced, the rate of electron transfer is reduced, and the amount of static electricity generated by mutual friction during the winding process of the body to be wound 1 and the metal belt 2 is reduced, resulting in reduced adsorption of dust or pollutant particles in the environment. This solves 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 1 and the metal belt 2, resulting in an uneven surface of the body to be wound 1, a gap between the metal belt 2 and the body to be wound 1, and leakage of signals from the gap, resulting in signal attenuation and thus affecting signal transmission efficiency. This avoids signal leakage from between the metal belt 2 and the body to be wound 1, and improves signal transmission efficiency.

[0120] During implementation, the vertical height of the rotating shaft 3 is adjusted in the same direction according to the direction of the metal belt 2's tendency to come off on the rotating shaft 3, thereby solving the problem that the edge burrs of the partially come off the rotating shaft 3 rub against the rotating shaft 3, causing the temperature of the metal belt 2 to rise. Since the metal belt 2 has a relatively strong thermal conductivity, when the metal belt 2 is wrapped around the body 1 to be wrapped, the metal belt 2 transfers heat to the insulating layer 9 of the body 1 to be wrapped. The material of the insulating layer 9 softens and collapses due to heat, resulting in a gap between the insulating layer 9 and the metal belt 2, causing the signal to leak from between the metal belt 2 and the insulating layer 9, resulting in signal attenuation and thus affecting the signal transmission efficiency. The signal leakage from between the metal belt 2 and the insulating layer 9 is avoided, thereby improving the signal transmission efficiency.

[0121] 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 partially detached metal strip 2 on 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 appears 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 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 gradually dissipates 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 due to 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.

[0122] In implementation, by comparing the temperature of the rotating shaft 3 with the preset third temperature, and comparing the diameter change with the preset diameter change, it is preliminarily determined whether the degree of eccentric wear and heating of the metal strip 2 meets the requirements. If it does not meet the requirements, the radius difference of the metal strip 2 on the rotating shaft 3 is obtained. According to the fact that the radius difference is greater than the preset radius difference, the wrapping angle is reduced, the contact area between the metal strip 2 in the wrapped area and the corresponding insulating layer 9 is reduced, and the friction between the metal strip 2 and the insulating layer 9 is reduced, which solves the problem that the contact area between the metal strip 2 in the wrapped area and the corresponding insulating layer 9 is too large due to the excessive wrapping angle, resulting in a large friction between the metal strip 2 and the insulating layer 9, that is, the metal strip 2 wound on the rotating shaft 3 is subject to large resistance, resulting in the metal strip 2 wrapped on the rotating shaft 3 being The metal belt 2 is forced to tighten due to the resistance, which causes the metal belt 2 wrapped on the rotating shaft 3 to be pressed on the side away from the body 1 to be wound, and loosened on the side close to the body 1 to be wound, resulting in an increase in pressure between the rotating shaft 3 and the metal belt 2 on the side away from the body 1 to be wound, resulting in an increase in friction between the two. Therefore, the rotating shaft 3 and the metal belt 2 generate heat due to friction, and the temperatures of both increase. Since the metal belt 2 has a relatively strong thermal conductivity, when the metal belt 2 is wrapped around the body 1 to be wound, the metal belt 2 transfers heat to the insulating layer 9 of the body 1 to be wound. The material of the insulating layer 9 softens and collapses due to heat, resulting in a gap between the insulating layer 9 and the metal belt 2, causing the signal to leak from between the metal belt 2 and the insulating layer 9, resulting in signal attenuation and thus affecting the signal transmission efficiency, thereby improving the signal transmission efficiency.

[0123] See also Figure 3 、 Figure 4 , which are respectively a structural schematic diagram of a wrapping system for manufacturing a radio frequency coaxial cable and a structural schematic diagram of the manufactured radio frequency coaxial cable according to an embodiment of the present invention;

[0124] The embodiment of the present invention is used to manufacture a wrapping system for a radio frequency coaxial cable, comprising:

[0125] A wrapping device for actually wrapping the body 1 to be wrapped to form the outer conductor layer 10, comprising a rotating shaft 3 with a metal belt 2 wound circumferentially, a vertical moving assembly 4 connected to the rotating shaft 3 for adjusting the vertical height of the rotating shaft 3, and a horizontal moving assembly 5 connected to the vertical moving assembly 4 for adjusting the horizontal distance between the vertical moving assembly 4 and the body 1 to be wrapped;

[0126] In practice, the vertical movement assembly 4 can be an electric telescopic rod. The principle of adjusting the vertical movement of the rotating shaft 3 by the extension and contraction of the electric telescopic rod drives the rotating shaft 3 to move in the vertical direction. The horizontal movement assembly 5 can be a belt conveyor. The principle of adjusting the horizontal movement of the vertical movement assembly 4 by the belt conveyor's drive roller rotating to drive the horizontally arranged belt to move horizontally, thereby driving the vertical movement assembly 4 connected to the belt to move in the horizontal direction.

[0127] Specifically, the horizontal distance between the vertical moving component 4 and the body to be wrapped 1 is increased by moving the horizontal moving component 5 in a direction away from the body to be wrapped 1, thereby reducing the wrapping angle.

[0128] In practice, the wrapping device further comprises a rotating platform 6 connected to the horizontal moving component 5 for rotating the horizontal moving component 5 around the body to be wrapped 1;

[0129] A 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 body 1 to be wrapped, and includes a take-up roller 7 arranged above the rotating shaft 3 and used to adjust the moving speed of the package body 1 to be wrapped;

[0130] Specifically, the moving speed of the package body 1 to be wound is reduced by reducing the rotation speed of the take-up roller 7, and the area of ​​the overlapping region is reduced by increasing the rotation speed of the take-up roller 7.

[0131] A detection unit connected to the wrapping device is used to detect the diameter of the to-be-wrapped body 1 wrapped with the metal strip 2, the diameter of the adjacent area of ​​the current wrapping area, the radius of the metal strip 2 wound on the rotating shaft 3, and the temperature of the rotating shaft 3, including:

[0132] a first distance measuring sensor, which is arranged above the position to be wrapped, and is used to detect the diameters of the metal strip 2 and the body to be wrapped 1;

[0133] A second distance measuring sensor is provided above the position to be wrapped, and is used to detect the diameter of an area adjacent to the current wrapping area;

[0134] a third distance measuring sensor, which is arranged above the rotating shaft 3 and is used to detect the radius of the metal belt 2 wound around the rotating shaft 3;

[0135] a temperature sensor, disposed above the rotating shaft 3, for detecting the temperature of the rotating shaft 3;

[0136] A control unit is respectively connected to the wrapping device, the wire take-up frame and the detection unit, and is used to determine the surface wrapping state of the body to be wrapped 1 according to the diameter of the body to be wrapped 1 wrapped with the metal strip 2, and determine the wrapping processing method based on the surface wrapping state, including adjusting the moving speed of the body to be wrapped 1, or, according to the temperature of the rotating shaft 3 of the wrapping device and the diameter change of the adjacent area of ​​the current wrapping area, determining the wear processing method of the rotating shaft 3, 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 of the metal strip 2 wound on the rotating shaft 3.

[0137] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection 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 body to be wound, which is made of the inner conductor and the insulation layer, to the initial winding position; Starting the wrapping device to cooperate with the take-up frame to wrap the metal strip in the wrapping device onto the object to be wrapped at a predetermined wrapping angle starting from the initial wrapping position to perform a wrapping test on the object to be wrapped; collecting the diameter of the body to be wrapped with the metal strip in the wrapping test; determining the surface wrapping state of the body to be wrapped according to the diameter; Determining a wrapping treatment method based on the surface wrapping state, including determining a shaft wear treatment method based on a temperature of a shaft of the wrapping device and a diameter change of an area adjacent to a current wrapping area, including adjusting a vertical height of the shaft / adjusting an area of ​​an overlapping area; 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 strip on the rotating shaft is the difference between the maximum distance between the outermost side surface of the metal strip wound around the rotating shaft and the rotating shaft and the minimum distance between the outermost side surface of the metal strip wound around the rotating shaft and the rotating shaft; The adjusting the vertical height of the rotating shaft includes: comparing the diameter with a predetermined second diameter; Based on the diameter being greater than the preset second diameter, it is preliminarily determined that the degree of softening of the insulation 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; Based on 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; The 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.

2. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 1, characterized in that: The determining of 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 object to be wrapped is in an abnormal wrapping state based on a diameter being greater than the preset first diameter; The wrapping body is determined to be in a normal wrapping state based on a 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: 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 body 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, characterized in that: 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 area of ​​the overlapping region is negatively correlated with the diameter change.

6. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 5, characterized in that: 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 determined that the degree of eccentric wear and heating of the metal belt does not meet the requirements, and the wrapping angle is reduced.

7. The wrapping method for manufacturing a radio frequency coaxial cable according to claim 6, characterized in that: The wrapping angle is negatively correlated with the radius difference.

8. A wrapping system using the wrapping method for manufacturing a radio frequency coaxial cable according to any one of claims 1 to 7, characterized in that: include: A wrapping device for actually wrapping the body to be wrapped to form an outer conductor layer, comprising a rotating shaft with a metal belt wound circumferentially, a vertical moving assembly connected to the rotating shaft for adjusting the vertical height of the rotating shaft, and a horizontal moving assembly connected to the vertical moving assembly for adjusting the horizontal distance between the vertical moving assembly 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 body to be wrapped, and includes a wire take-up roller arranged above the rotating shaft and used to adjust the moving speed of the body to be wrapped; a detection unit connected to the wrapping device, configured to detect the diameter of the body to be 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, which is respectively connected to the wrapping device, the wire 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 treatment method based on the surface wrapping state, including determining 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.

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