CN112164906A - Low-loss low-standing-wave radio frequency cable assembly - Google Patents
Low-loss low-standing-wave radio frequency cable assembly Download PDFInfo
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- CN112164906A CN112164906A CN202011062052.3A CN202011062052A CN112164906A CN 112164906 A CN112164906 A CN 112164906A CN 202011062052 A CN202011062052 A CN 202011062052A CN 112164906 A CN112164906 A CN 112164906A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/11—End pieces for multiconductor cables supported by the cable and for facilitating connections to other conductive members, e.g. for liquid cooled welding cables
Abstract
The invention discloses a low-loss low-standing wave radio frequency cable assembly, which comprises an inner conductor, wherein an insulating medium layer is arranged outside the inner conductor, an outer conductor shielding layer is arranged outside the insulating medium layer, an insulating protective layer is arranged outside the outer conductor shielding layer, a first chamfer is arranged at the end head of the inner conductor, a second chamfer is arranged at the end head of the insulating protective layer, a connector tail pipe is arranged on one side of a connector, a second welding cavity is arranged inside the connector tail pipe, a guide table is arranged at the head of the connector tail pipe, a guide cavity is arranged inside the guide table and communicated with the second welding cavity, a guide step is arranged at the joint of the guide cavity and the second welding cavity, a first welding cavity is arranged inside the tail end of a connector pin, and a welding observation hole is arranged at the bottom end of the first welding cavity; by adopting the structure, the radio frequency cable assembly meets the requirements of low insertion loss, low standing wave and equal phase.
Description
Technical Field
The invention relates to the technical field of cable assemblies, in particular to a low-loss low-standing-wave radio-frequency cable assembly.
Background
The fabrication of rf coaxial cable assemblies has evolved with the development, production, and manufacturing of microwave communication systems. The short-distance transmission of microwave signals among different components and modules in the system is realized. The requirements of signals with different frequencies and different application environments on transmission cables are different, and the technical indexes of the transmission cable include: insertion loss, standing waves, phase fluctuations, etc.
With the continuous increase of microwave communication frequency, the requirements on coaxial cable assemblies are higher and higher, the insertion loss is related to cables, the manufacturing influence of cable joints is larger, and particularly when the application frequency is higher, port standing waves of the cables are also the difficulty for manufacturing the cable assemblies. When the cable assembly is used for multi-channel signal transmission, phase consistency among different cable assemblies becomes a new difficulty.
At present, the manufacture of coaxial cable components for general purposes is more, and the manufacture of cable components with high index requirements such as low insertion loss, low standing wave, equal phase and the like is difficult.
Disclosure of Invention
In order to overcome the above technical problems, an object of the present invention is to provide a low-loss low-standing-wave rf cable assembly, which can meet the requirements of signal transmission in a microwave communication system for insertion loss, standing wave, and phase of the rf cable assembly.
The purpose of the invention can be realized by the following technical scheme:
a low-loss low-standing wave radio frequency cable assembly comprises an inner conductor, an insulating medium layer, an outer conductor shielding layer, an insulating protective layer, a first chamfer, a connector pin, a welding observation hole, a first welding cavity, a connector tail pipe, a second chamfer, a guide table, a guide step, a second welding cavity, a guide cavity, a coaxial cable and a connector, wherein the coaxial cable comprises the inner conductor, the insulating medium layer is arranged outside the inner conductor, the outer conductor shielding layer is arranged outside the insulating medium layer, the insulating protective layer is arranged outside the outer conductor shielding layer, the end head of the inner conductor is provided with the first chamfer, and the end head of the insulating protective layer is provided with the second chamfer;
a connector tail pipe is arranged on one side of the connector, a second welding cavity is formed in the connector tail pipe, a guide table is arranged at the head of the connector tail pipe, a guide cavity is formed in the guide table and communicated with the second welding cavity, and a guide step is arranged at the joint of the guide cavity and the second welding cavity;
a first welding cavity is formed in the tail end of the connector pin, and a welding observation hole is formed in the bottom end of the first welding cavity.
As a further scheme of the invention: the first chamfer and the second chamfer are both 45 degrees.
As a further scheme of the invention: the manufacturing method of the low-loss low-standing wave radio frequency cable assembly comprises the following steps:
firstly, cutting a coaxial cable by using cutting equipment, penetrating one end of the coaxial cable into an installation hole, pulling an adjusting bolt, fixing the coaxial cable by using a pressing plate, starting a servo motor to drive a lead screw to rotate, driving a movable base and a fixed block to transversely move by the lead screw, moving to the front end of a first shearing mechanism, stopping the servo motor, starting a first oil cylinder to drive a first movable table and a first fixed table to move forwards, and starting a first air cylinder to cut the front end of the coaxial cable fixed by the pressing plate to be flat;
pulling an adjusting bolt, moving the cut and flattened coaxial cable forward for a preset distance, fixing the coaxial cable through a pressing plate again, starting a servo motor again, driving a moving base and a fixing block to move to the front end of a second cutting mark mechanism, stopping the servo motor again, starting a second oil cylinder, driving a second moving table and a second fixing table to move forward, starting a second air cylinder, and cutting an insulating protective layer, an outer conductor shielding layer and an insulating medium layer of the coaxial cable extending out of the fixing block;
thirdly, starting the servo motor again, driving the movable base and the fixed block to move to the front end of the third skin clamping mechanism, stopping the servo motor, starting the fourth cylinder, driving the third movable table and the third fixed table to move forwards, starting the third cylinder, clamping the cut insulating protective layer, the outer conductor shielding layer and the insulating medium layer in the coaxial cable, adjusting the motion direction of the fourth cylinder, and removing the cut insulating protective layer, the cut outer conductor shielding layer and the cut insulating medium layer from the coaxial cable to expose the inner conductor;
trimming the cuts of the insulating medium layer, the outer conductor shielding layer and the insulating protection layer of the coaxial cable orderly, and forming a second chamfer on the end face of the insulating protection layer;
cutting the exposed inner conductor, and forming a first chamfer on the end face of the inner conductor;
sixthly, carrying out tin coating treatment on the inner conductor provided with the first chamfer;
seventhly, inserting the inner conductor of the coaxial cable into the first welding cavity of the connector pin for welding;
step eight, inserting the outer conductor shielding layer into a second welding cavity of the joint tail pipe, and inserting the insulating protection layer provided with a second chamfer into the guide cavity, so that the second chamfer surface is abutted against the guide step;
welding the outer conductor shielding layer in the second welding cavity to obtain the low-loss low-standing-wave radio frequency cable assembly;
and step ten, testing the performance of the welded low-loss low-standing wave radio frequency cable assembly.
As a further scheme of the invention: the cutting equipment comprises a first operating platform, wherein a fixing mechanism is arranged on one side of the top of the first operating platform, a fixing frame is arranged on the other side of the top of the first operating platform, and a first shearing mechanism, a second shear mark mechanism and a third skin clamping mechanism are sequentially arranged in the fixing frame;
the fixing mechanism comprises a second operating platform, one side of the second operating platform is provided with a supporting platform, the top of the supporting platform is fixedly provided with a servo motor, the top of the second operating platform is provided with a sliding groove, a screw rod and two guide rods I are arranged in the sliding groove, the screw rod is positioned between the two guide rods I, one end of the screw rod close to the support platform is fixedly connected to an output shaft of the servo motor, one side of the screw rod close to the supporting platform is in threaded connection with a movable base, the top of the movable base is provided with a fixed block, the fixing block is internally provided with a mounting hole, one side of the fixing block is provided with two supporting blocks which are symmetrically distributed at the upper end and the lower end of the fixing block, an adjusting bolt penetrates through the supporting blocks and is connected with a pressing plate, the supporting shoe inboard has seted up the standing groove, is provided with first spring in the standing groove, first spring cup joints on adjusting bolt.
As a further scheme of the invention: the first shearing mechanism comprises a first mounting table, the first mounting table is fixedly mounted inside a fixing frame, a first chute is formed inside the first mounting table, a first sliding table is slidably mounted in the first chute, a first balance rod is arranged on one side of the first mounting table, one side of the first sliding table is slidably connected with the first balance rod, a first fixing table is arranged on the top of the other side of the first sliding table, two first guide rods are arranged on one side of the top of the first fixing table, a first base plate is fixedly connected to the tops of the two first guide rods, a first air cylinder is fixedly mounted on the first base plate, a first moving table is clamped on the first guide rods, a piston rod of the first air cylinder penetrates through the first base plate and is connected to the top of the first moving table, a first upper fixing plate and a first blade are mounted on one side of the first moving table, and the first blade is located on the first upper inner side, first stationary blade is installed to first fixed station one side, first stationary blade and first last stationary blade lie in same one side, first mount table bottom is connected with first connecting platform, first connecting platform opposite side is provided with first gag lever post, first connecting platform opposite side bottom is provided with connecting block one, is connected with first hydro-cylinder on the connecting block one, the piston rod of first hydro-cylinder is connected on the connecting block two that first slip table bottom set up.
As a further scheme of the invention: the second shear mark mechanism comprises a second mounting table, the second mounting table is fixedly mounted inside the fixing frame, a second sliding groove is formed in the second mounting table, a second sliding table is mounted in the second sliding groove in a sliding mode, a second balance rod is arranged on one side of the second mounting table, one side of the second sliding table is slidably connected with the second balance rod, a second fixing table is arranged on the top of the other side of the second sliding table, two second guide rods are arranged on one side of the top of the second fixing table, a second guide rod top is fixedly connected with a second base plate, a second air cylinder is fixedly mounted on the second base plate, a second moving table is connected to the upper portion of the second moving table in a clamping mode, a piston rod of the second air cylinder penetrates through the second base plate and is connected to the top of the second moving table, a second upper blade, a third upper blade and a fourth upper blade are sequentially mounted on one side of the second moving table from outside to inside, and a second lower blade is sequentially mounted on one side of the, The third bottom knife blade and the fourth bottom knife blade are arranged on the bottom of the second mounting platform, a second connecting platform is connected to the bottom of the second mounting platform, a second limiting rod is arranged on the other side of the second connecting platform, a third connecting block is arranged at the bottom of the other side of the second connecting platform, a second oil cylinder is connected to the third connecting block, and a piston rod of the second oil cylinder is connected to the fourth connecting block arranged at the bottom of the second sliding platform.
The third leather clamping mechanism comprises a third mounting table, the third mounting table is fixedly mounted inside the fixing frame, a third sliding groove is formed inside the third mounting table, a third sliding table is slidably mounted in the third sliding groove, the bottom of one side of the third sliding table is provided with a first connecting block and a first fixing plate, a fourth air cylinder is fixedly mounted on the first fixing plate, a piston rod of the fourth air cylinder penetrates through the first fixing plate and is connected to the fifth connecting block, the top of the other side of the third sliding table is provided with a third fixing table, the top of one side of the third fixing table is provided with two third guide rods, the top of the two third guide rods is fixedly connected with a third backing plate, the third backing plate is fixedly mounted with a third air cylinder, a third moving table is clamped on the third guide rods, the piston rod of the third air cylinder penetrates through the third backing plate and is connected to the top of the third moving table, one side of, install the third installation piece in the mounting groove two, third installation piece bottom outside-in has set gradually on first clamp platform, the second on clamp platform, the third installation piece top is connected with the second spring, the second spring other end passes through first installation screw and installs on the third mobile station, third fixed station one side outside-in has set gradually under first clamp platform, the second clamp platform, the third clamp platform under the third.
As a further scheme of the invention: the inner conductor, the insulating medium layer and the outer conductor shielding layer are not extruded, after the insulating medium layer and the outer conductor shielding layer are trimmed, the insulating medium layer is cut tidily, the surface of the insulating medium layer is free of metal chips and other pollution, and the outer conductor shielding layer is cut tidily, free of burrs and free of rolling.
As a further scheme of the invention: the inner conductor and the first welding cavity are welded firmly and reliably.
As a further scheme of the invention: the outer conductor shielding layer and the joint tail pipe are filled with welding solder, and no cavity exceeding 1/4 is formed by X-ray inspection.
The invention has the beneficial effects that:
1. set up first chamfer to the inner conductor, the burr of inner conductor end is clear away on the one hand, does benefit to the assembly, and on the other hand has eliminated the inner conductor and has warp the influence to the electrical property, avoids appearing the impedance abrupt change point, has reduced voltage standing wave ratio, has also reduced simultaneously and has been directed against the insertion loss.
2. The welding condition is observed through the welding observation hole, so that the welding reliability is ensured, no welding tin remains are generated, and meanwhile, the X-ray inspection is used, so that excessive cavities are avoided, and the low insertion loss is ensured; meanwhile, the length and the welding position of the coaxial cable can be adjusted in time to meet the requirement of equal phase; meanwhile, a second chamfer is arranged at the end of the insulating protective layer, so that the butt joint of the coaxial cable and the connector is facilitated, and the influence of the butt joint position deviation on the electrical property is avoided.
3. The first spring has elasticity, so that the coaxial cable can be prevented from being crushed, and the pressing plate is arc-shaped, so that the coaxial cable is prevented from being pressed and deformed; through setting up first stationary blade and first stationary blade down with coaxial cable fixed at the shearing in-process, better avoid the offset.
4. Through the cooperation of the second upper blade, the third upper blade, the fourth upper blade, the second lower blade, the third lower blade and the fourth lower blade, the insulating protective layer, the outer conductor shielding layer and the insulating medium layer of the coaxial cable can be cut together, the repeated work is avoided, and the work efficiency is improved.
5. Set up first last clamp stand, the clamp stand on the second, the clamp stand and first clamp stand on the third, the clamp stand under the second, the cooperation work of clamp stand under the third, can make open insulating protective layer, outer conductor shielding layer, insulating medium layer is cliied simultaneously, drive the third slip table through the fourth cylinder and move backward, can get rid of open insulating protective layer fast, outer conductor shielding layer, insulating medium layer, the second spring that sets up simultaneously, make coaxial cable can not too tightly by the clamping through elasticity, damage coaxial cable.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of an assembly structure of the RF cable assembly of the present invention;
FIG. 2 is a schematic view of the internal structure of the coaxial cable of the present invention;
FIG. 3 is a schematic view of the overall construction of the cutting apparatus of the present invention;
FIG. 4 is a schematic view of the overall construction of a first cutting mechanism in the cutting apparatus of the present invention;
FIG. 5 is a schematic view of the overall structure of a second notching mechanism in the cutting apparatus of the present invention;
FIG. 6 is a schematic view of the overall structure of a third skin-clamping mechanism in the cutting apparatus of the present invention;
FIG. 7 is a schematic cross-sectional view of a portion of a fixing mechanism in the cutting apparatus of the present invention;
FIG. 8 is a schematic view showing a third mounting block attaching structure in the cutting apparatus of the present invention.
In the figure: 1. an inner conductor; 2. an insulating dielectric layer; 3. an outer conductor shield layer; 4. an insulating protective layer; 5. a first chamfer; 6. a joint pin; 7. welding an observation hole; 8. a first weld cavity; 9. a joint tail pipe; 10. a second chamfer; 11. a guide table; 12. a guide step; 13. a second weld cavity; 14. a guide cavity; 20. a coaxial cable; 30. a connector; 100. a first operation table; 101. a fixed mount; 200. a fixing mechanism; 201. a support table; 202. a servo motor; 203. a second operation table; 204. a screw rod; 205. moving the base; 206. a fixed block; 207. mounting holes; 208. a support block; 209. pressing a plate; 210. a first spring; 211. adjusting the bolt; 300. a first shearing mechanism; 301. a first cylinder; 302. a first mobile station; 303. a first fixed table; 304. a first upper fixing sheet; 306. a first blade; 307. a first lower fixing sheet; 308. a first guide bar; 309. a first cylinder; 310. a first sliding table; 311. a first mounting table; 312. a first balance bar; 313. a first limit rod; 314. a first connection station; 400. a second notching mechanism; 401. a second cylinder; 402. a second mobile station; 403. a second stationary stage; 404. a second guide bar; 405. a second mounting table; 406. a second balance bar; 407. a second sliding table; 408. a second cylinder; 409. a second connecting station; 410. a second limiting rod; 411. a second upper blade; 412. a third upper blade; 413. a fourth upper blade; 414. a second lower blade; 415. a third lower blade; 416. a fourth lower blade; 500. a third skin clamping mechanism; 501. a third cylinder; 502. a third mobile station; 503. a third stationary stage; 504. a third guide bar; 505. a fourth cylinder; 506. a third mounting table; 507. a third sliding table; 508. a third mounting block; 509. a second spring; 510. a first lower clamping table; 511. a second lower clamping table; 512. a third lower clamping table; 513. a first mounting screw; 514. a first upper clamping table; 515. a second upper clamping table; 516. and a third upper clamping table.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, a low-loss low-standing wave radio frequency cable assembly includes an inner conductor 1, an insulating medium layer 2, an outer conductor shielding layer 3, an insulating protection layer 4, a first chamfer 5, a connector pin 6, a welding observation hole 7, a first welding cavity 8, a connector tail tube 9, a second chamfer 10, a guide table 11, a guide step 12, a second welding cavity 13, a guide cavity 14, a coaxial cable 20, and a connector 30, where the coaxial cable 20 includes the inner conductor 1, the insulating medium layer 2 is disposed outside the inner conductor 1, the outer conductor shielding layer 3 is disposed outside the insulating medium layer 2, the insulating protection layer 4 is disposed outside the outer conductor shielding layer 3, the first chamfer 5 is disposed at an end of the inner conductor 1, and the second chamfer 10 is disposed at an end of the insulating protection layer 4;
a connector tail pipe 9 is arranged on one side of the connector 30, a second welding cavity 13 is formed in the connector tail pipe 9, a guide table 11 is arranged at the head of the connector tail pipe 9, a guide cavity 14 is formed in the guide table 11, the guide cavity 14 is communicated with the second welding cavity 13, and a guide step 12 is arranged at the joint of the guide cavity 14 and the second welding cavity 13;
a first welding cavity 8 is formed in the tail end of the joint pin 6, and a welding observation hole 7 is formed in the bottom end of the first welding cavity 8; the first chamfer 5 and the second chamfer 10 are both 45 degrees.
The manufacturing method of the low-loss low-standing wave radio frequency cable assembly comprises the following steps:
step one, cutting the coaxial cable 20 by using a cutting device, inserting one end of the coaxial cable 20 into the mounting hole 207, pulling the adjusting bolt 211, fixing the coaxial cable 20 by using the pressing plate 209, starting the servo motor 202 to drive the screw rod 204 to rotate, driving the moving base 205 and the fixing block 206 to transversely move by the screw rod 204, moving to the front end of the first shearing mechanism 300, stopping the servo motor 202, starting the first oil cylinder 309 to drive the first moving platform 302 and the first fixing platform 303 to move forwards, and starting the first air cylinder 301 to cut the front end of the coaxial cable 20 fixed by the pressing plate 209 flat;
step two, pulling the adjusting bolt 211, moving the cut and flattened coaxial cable 20 forward by a preset distance, fixing the coaxial cable 20 through the pressing plate 209 again, starting the servo motor 202 again, driving the moving base 205 and the fixed block 206 to move to the front end of the second incision mechanism 400, stopping the servo motor 202 again, starting the second oil cylinder 408, driving the second moving table 402 and the second fixed table 403 to move forward, starting the second air cylinder 401, and cutting the insulating protection layer 4, the outer conductor shielding layer 3 and the insulating medium layer 2 of the coaxial cable 20 extending out of the fixed block 206;
step three, starting the servo motor 202 again, driving the moving base 205 and the fixed block 206 to move to the front end of the third skin clamping mechanism 500, stopping the servo motor 202, starting the fourth cylinder 505, driving the third moving platform 502 and the third fixed platform 503 to move forward, starting the third cylinder 501, clamping the insulation protective layer 4, the outer conductor shielding layer 3 and the insulation medium layer 2 cut in the coaxial cable 20, adjusting the moving direction of the fourth cylinder 505, removing the cut insulation protective layer 4, the cut outer conductor shielding layer 3 and the cut insulation medium layer 2 from the coaxial cable 20, and exposing the inner conductor 1;
trimming the cuts of the insulating medium layer 2, the outer conductor shielding layer 3 and the insulating protection layer 4 of the coaxial cable 20 orderly, and forming a second chamfer 10 on the end face of the insulating protection layer 4;
step five, cutting the exposed inner conductor 1, and forming a first chamfer 5 on the end face of the inner conductor 1;
sixthly, carrying out tin coating treatment on the inner conductor 1 provided with the first chamfer 5;
seventhly, inserting the inner conductor 1 of the coaxial cable 20 into the first welding cavity 8 of the joint pin 6 for welding;
step eight, inserting the outer conductor shielding layer 3 into a second welding cavity 13 of the joint tail pipe 9, and inserting the insulating protection layer 4 provided with a second chamfer 10 into a guide cavity 14, so that the surface of the second chamfer 10 is abutted against the guide step 12;
step nine, welding the outer conductor shielding layer 3 in the second welding cavity 13 to obtain a low-loss low-standing-wave radio frequency cable assembly;
and step ten, testing the performance of the welded low-loss low-standing wave radio frequency cable assembly.
The cutting equipment comprises a first operating platform 100, wherein a fixing mechanism 200 is arranged on one side of the top of the first operating platform 100, a fixing frame 101 is arranged on the other side of the top of the first operating platform 100, and a first cutting mechanism 300, a second cutting mechanism 400 and a third leather clamping mechanism 500 are sequentially arranged in the fixing frame 101;
the fixing mechanism 200 comprises a second operating platform 203, a supporting platform 201 is arranged on one side of the second operating platform 203, a servo motor 202 is fixedly installed on the top of the supporting platform 201, a sliding groove is formed in the top of the second operating platform 203, a screw rod 204 and two guide rods I are arranged in the sliding groove, the screw rod 204 is located between the two guide rods I, one end, close to the supporting platform 201, of the screw rod 204 is fixedly connected to an output shaft of the servo motor 202, a moving base 205 is in threaded connection with one side, close to the supporting platform 201, of the screw rod 204, a fixing block 206 is arranged on the top of the moving base 205, an installation hole 207 is formed in the fixing block 206, two supporting blocks 208 are arranged on one side of the fixing block 206, the two supporting blocks 208 are symmetrically distributed at the upper end and the lower end of the fixing block 206, the placing groove is internally provided with a first spring 210, the first spring 210 is sleeved on the adjusting bolt 211, the joint of the front end and the rear end of the mounting hole 207 is a conical transition area, and the conical transition area plays a role in guiding in the insertion process of the coaxial cable 20.
The first shearing mechanism 300 comprises a first mounting table 311, the first mounting table 311 is fixedly mounted inside a fixing frame 101, a first sliding groove is formed inside the first mounting table 311, a first sliding table 310 is slidably mounted in the first sliding groove, a first balance rod 312 is arranged on one side of the first mounting table 311, one side of the first sliding table 310 is slidably connected with the first balance rod 312, the first sliding table 310 is more stable in the movement process through the first balance rod 312, unidirectional stress is avoided, a first fixing table 303 is arranged on the top of the other side of the first sliding table 310, two first guide rods 308 are arranged on one side of the top of the first fixing table 303, a first base plate fixedly connected to the top of the first guide rods 308 is fixedly mounted with a first air cylinder 301, a first moving table 302 is clamped on the first guide rods 308, a piston rod of the first air cylinder 301 penetrates through the base plate and is connected to the top of the first moving table 302, a first upper fixing plate 304 and a first blade 306 are installed at one side of the first moving stage 302, the first blade 306 is positioned inside the first upper fixing piece 304, the first lower fixing piece 307 is installed at one side of the first fixing stage 303, the first lower fixing piece 307 and the first upper fixing piece 304 are located on the same side, the first upper fixing piece 304 and the first lower fixing piece 307 are provided with a first round hole in a matching way, the aperture of the first round hole is equal to the outer diameter of the coaxial cable 20, a first connecting table 314 is connected to the bottom of the first mounting table 311, a first limit rod 313 is arranged on the other side of the first connecting table 314, the first sliding table 310 is limited by the first limiting rod 313, so that the first oil cylinder 309 is prevented from being damaged by excessive movement, the first connecting block is arranged at the bottom of the other side of the first connecting platform 314, the first oil cylinder 309 is connected to the first connecting block, and a piston rod of the first oil cylinder 309 is connected to a second connecting block arranged at the bottom of the first sliding table 310.
The second notching mechanism 400 comprises a second mounting table 405, the second mounting table 405 is fixedly mounted inside the fixing frame 101, a second sliding groove is formed inside the second mounting table 405, a second sliding table 407 is slidably mounted in the second sliding groove, a second balance rod 406 is arranged on one side of the second mounting table 405, one side of the second sliding table 407 is slidably connected with the second balance rod 406, the second sliding table 407 is more stable in the motion process through the second balance rod 406, unidirectional stress is avoided, a second fixing table 403 is arranged on the top of the other side of the second sliding table 407, two second guide rods 404 are arranged on one side of the top of the second fixing table 403, a second cushion plate II is fixedly connected to the top of the second guide rods 404, a second air cylinder 401 is fixedly mounted on the second cushion plate II, a second moving table 402 is clamped on the second guide rods 404, a piston rod of the second air cylinder 401 penetrates through the second cushion plate and is connected to the top of the second moving table 402, a second upper blade 411, a third upper blade 412 and a fourth upper blade 413 are sequentially installed on one side of the second moving platform 402 from outside to inside, a second lower blade 414, a third lower blade 415 and a fourth lower blade 416 are sequentially installed on one side of the second fixing platform 403 from outside to inside, a second round hole second is formed at the position of the second upper blade 411 and the position of the second lower blade 414 in a matched manner, the diameter of the second round hole is equal to the outer diameter of the outer conductor shielding layer 3, a third round hole is formed at the position of the third upper blade 412 and the position of the third lower blade 415, the diameter of the third round hole is equal to the outer diameter of the insulating medium layer 2, a fourth round hole fourth is formed at the position of the fourth upper blade 413 and the position of the fourth lower blade 416 in a matched manner, the diameter of the fourth round hole is equal to the outer diameter of the inner conductor 1, a second connecting platform 409 is connected to the bottom of the second mounting platform 405, a second limiting rod 410 is arranged, a second oil cylinder 408 is connected to the third connecting block, and a piston rod of the second oil cylinder 408 is connected to a fourth connecting block arranged at the bottom of the second sliding table 407.
The third leather clamping mechanism 500 comprises a third mounting table 506, the third mounting table 506 is fixedly mounted inside the fixing frame 101, a third sliding groove is formed inside the third mounting table 506, a third sliding table 507 is slidably mounted in the third sliding groove, a first connecting block and a first fixing plate are arranged at the bottom of one side of the third sliding table 507, the fourth air cylinder 505 is fixedly mounted on the first fixing plate, a piston rod of the fourth air cylinder 505 penetrates through the first fixing plate and is connected to the fifth connecting block, a third fixing table 503 is arranged at the top of the other side of the third sliding table 507, two third guide rods 504 are arranged at the top of one side of the third fixing table 503, a third cushion plate is fixedly connected to the top of the third guide rods 504, a third air cylinder 501 is fixedly mounted on the third cushion plate, a third moving table 502 is clamped on the third guide rod 504, and a piston rod of the third air cylinder 501 penetrates through the third cushion plate and is connected to the top, a second mounting groove is formed in one side of the third mobile station 502, a third mounting block 508 is mounted in the second mounting groove, a first upper clamping table 514, a second upper clamping table 515 and a third upper clamping table 516 are sequentially arranged at the bottom of the third mounting block 508 from outside to inside, a second spring 509 is connected to the top of the third mounting block 508, the other end of the second spring 509 is mounted on the third mobile station 502 through a first mounting screw 513, and a first lower clamping table 510, a second lower clamping table 511 and a third lower clamping table 512 are sequentially arranged on one side of the third fixed station 503 from outside to inside; the first upper clamping table 514 is matched with the first lower clamping table 510 to form a fifth circular hole, the second upper clamping table 515 is matched with the second lower clamping table 511 to form a sixth circular hole, the third upper clamping table 516 is matched with the third lower clamping table 512 to form a seventh circular hole, the diameters of the fifth circular hole, the sixth circular hole and the seventh circular hole are equal, and the inner wall of each hole is provided with anti-skidding lines.
The working principle of the invention is as follows:
one end of a coaxial cable 20 is inserted into the mounting hole 207, an adjusting bolt 211 is pulled, the pressing plate 209 is enabled to fix the coaxial cable 20 through the elastic force of a first spring 210, the servo motor 202 is started to drive the screw rod 204 to rotate, the screw rod 204 rotates to drive the movable base 205 and the fixed block 206 to move transversely and move to the front end of the first shearing mechanism 300, the servo motor 202 is stopped corresponding to the circle center position of the first round hole, the first oil cylinder 309 is started to drive the first movable platform 302 and the first fixed platform 303 to move forwards, when the outer side surface of the first lower fixed plate 307 moves to abut against the supporting block 208, the first air cylinder 301 is started to push the first movable platform 302 to move downwards, and the front end of the coaxial cable 20 fixed by the pressing plate 209 is cut flat through the first blade 306; the first spring 210 has elasticity, so that the coaxial cable 20 can be prevented from being crushed, and the pressing plate 209 is arranged in an arc shape, so that the coaxial cable 20 is prevented from being pressed and deformed; the coaxial cable 20 is fixed during the cutting process by the first upper fixing piece 304 and the first lower fixing piece 307, and the position deviation is better avoided.
After the front end of the coaxial cable 20 is cut flat, the adjusting bolt 211 is pulled to move the cut flat coaxial cable 20 forward by a preset distance, which is manually operated according to actual conditions, the coaxial cable 20 is fixed by the pressing plate 209 again, the servo motor 202 is started again to drive the moving base 205 and the fixing block 206 to move to the front end of the second mark cutting mechanism 400, the servo motor 202 is stopped again corresponding to the position of the center of the second circle of the circular hole, the second oil cylinder 408 is started to drive the second moving platform 402 and the second fixing platform 403 to move forward, when the outer side surface of the second lower blade 414 is abutted against the supporting block 208, the second air cylinder 401 is started to drive the second moving platform 402 to move downward, and the insulating protective layer 4, the fourth upper blade 413, the second lower blade 414, the third lower blade 415 and the fourth lower blade 416 of the coaxial cable 20 with a preset length extending from the fixing block 206 are matched to work, The outer conductor shielding layer 3 and the insulating medium layer 2 are cut open together; through the arrangement of the second upper blade 411, the third upper blade 412, the fourth upper blade 413, the second lower blade 414, the third lower blade 415, and the fourth lower blade 416, the insulating protective layer 4, the outer conductor shielding layer 3, and the insulating medium layer 2 of the coaxial cable 20 can be cut together, so that the repeated work is avoided, and the working efficiency is improved.
Starting the servo motor 202 again, driving the moving base 205 and the fixed block 206 to move to the front end of the third skin clamping mechanism 500, corresponding to the position of the center of the five circular holes, stopping the servo motor 202, starting the fourth cylinder 505, driving the third moving platform 502 and the third fixed platform 503 to move forward, when moving to the front side of the third fixed platform 503 to abut against the supporting block 208, starting the third cylinder 501, pushing the third moving platform 502 to move downward, clamping the cut insulating protection layer 4, the cut outer conductor shielding layer 3 and the cut insulating medium layer 2 in the coaxial cable 20, adjusting the moving direction of the fourth cylinder 505, removing the cut insulating protection layer 4, the cut outer conductor shielding layer 3 and the cut insulating medium layer 2 from the coaxial cable 20, and exposing the inner conductor 1; set up first last clamp platform 514, the second is gone up and is pressed from both sides platform 515, the third is gone up and is pressed from both sides platform 516 and first clamp platform 510 down, the second is pressed from both sides platform 511, the cooperation of third lower clamp platform 512 work, can make the insulating protective layer 4 that cuts, outer conductor shielding layer 3, insulating medium layer 2 is cliied simultaneously, drive third slip table 507 rethread through fourth cylinder 505, can get rid of the insulating protective layer 4 that cuts fast, outer conductor shielding layer 3, insulating medium layer 2, the second spring 509 that sets up simultaneously, make coaxial cable 20 can not be too tight by the clamping through elasticity, damage coaxial cable 20.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (7)
1. A low-loss low-standing-wave radio frequency cable assembly comprises an inner conductor (1), an insulating medium layer (2), an outer conductor shielding layer (3), an insulating protective layer (4), a first chamfer (5), a joint pin (6), a welding observation hole (7), a first welding cavity (8), a joint tail pipe (9), a second chamfer (10), a guide table (11), a guide step (12), a second welding cavity (13), a guide cavity (14), a coaxial cable (20) and a connector (30), and is characterized in that the coaxial cable (20) comprises the inner conductor (1), the insulating medium layer (2) is arranged outside the inner conductor (1), the outer conductor shielding layer (3) is arranged outside the insulating medium layer (2), the insulating protective layer (4) is arranged outside the outer conductor shielding layer (3), the end of the inner conductor (1) is provided with the first chamfer (5), a second chamfer (10) is arranged at the end of the insulating protection layer (4);
a joint tail pipe (9) is arranged on one side of the connector (30), a second welding cavity (13) is formed in the joint tail pipe (9), a guide table (11) is arranged at the head of the joint tail pipe (9), a guide cavity (14) is formed in the guide table (11), the guide cavity (14) is communicated with the second welding cavity (13), and a guide step (12) is arranged at the joint of the guide cavity (14) and the second welding cavity (13);
connect contact pin (6) tail end inside and seted up first welding chamber (8), welding observation hole (7) have been seted up to first welding chamber (8) bottom.
2. A low loss low standing wave radio frequency cable assembly as claimed in claim 1, wherein the first chamfer (5) and the second chamfer (10) are both 45 degrees.
3. The low-loss low-standing wave radio frequency cable assembly as claimed in claim 1, wherein the method of making the low-loss low-standing wave radio frequency cable assembly comprises the steps of:
step one, cutting a coaxial cable (20) by using a cutting device, penetrating one end of the coaxial cable (20) into an installation hole (207), pulling an adjusting bolt (211), fixing the coaxial cable (20) by using a pressing plate (209), starting a servo motor (202), driving a screw rod (204) to rotate, driving a movable base (205) and a fixed block (206) to transversely move by the screw rod (204), moving to the front end of a first shearing mechanism (300), stopping the servo motor (202), starting a first oil cylinder (309), driving a first movable platform (302) and a first fixed platform (303) to move forwards, and starting a first air cylinder (301) to cut the front end of the coaxial cable (20) fixed by the pressing plate (209) flat;
pulling an adjusting bolt (211), moving the cut and flattened coaxial cable (20) forward for a preset distance, fixing the coaxial cable (20) through a pressing plate (209) again, starting a servo motor (202) again, driving a moving base (205) and a fixing block (206) to move to the front end of a second cut mark mechanism (400), stopping the servo motor (202) again, starting a second oil cylinder (408), driving a second moving table (402) and a second fixing table (403) to move forward, starting a second air cylinder (401), and cutting an insulating protection layer (4), an outer conductor shielding layer (3) and an insulating medium layer (2) of the coaxial cable (20) extending out of the fixing block (206);
thirdly, starting the servo motor (202) again, driving the movable base (205) and the fixed block (206) to move to the front end of the third skin clamping mechanism (500), stopping the servo motor (202), starting the fourth cylinder (505), driving the third movable platform (502) and the third fixed platform (503) to move forwards, starting the third cylinder (501), clamping the insulation protective layer (4), the outer conductor shielding layer (3) and the insulation medium layer (2) which are cut in the coaxial cable (20), adjusting the motion direction of the fourth cylinder (505), removing the cut insulation protective layer (4), the cut outer conductor shielding layer (3) and the cut insulation medium layer (2) from the coaxial cable (20), and exposing the inner conductor (1);
trimming cuts of the insulating medium layer (2), the outer conductor shielding layer (3) and the insulating protection layer (4) of the coaxial cable (20) in order, and forming a second chamfer (10) on the end face of the insulating protection layer (4);
step five, cutting the exposed inner conductor (1), and forming a first chamfer (5) on the end face of the inner conductor (1);
sixthly, carrying out tin coating treatment on the inner conductor (1) provided with the first chamfer (5);
seventhly, inserting the inner conductor (1) of the coaxial cable (20) into the first welding cavity (8) of the joint contact pin (6) for welding;
step eight, inserting the outer conductor shielding layer (3) into a second welding cavity (13) of the joint tail pipe (9), and inserting the insulating protection layer (4) provided with a second chamfer (10) into a guide cavity (14), so that the surface of the second chamfer (10) is abutted against a guide step (12);
welding the outer conductor shielding layer (3) in the second welding cavity (13) to obtain the low-loss low-standing-wave radio frequency cable assembly;
and step ten, testing the performance of the welded low-loss low-standing wave radio frequency cable assembly.
4. The low-loss low-standing-wave radio-frequency cable assembly as claimed in claim 3, wherein the cutting device comprises a first operating platform (100), a fixing mechanism (200) is arranged on one side of the top of the first operating platform (100), a fixing frame (101) is arranged on the other side of the top of the first operating platform (100), and a first shearing mechanism (300), a second cutting mechanism (400) and a third skin clamping mechanism (500) are sequentially arranged in the fixing frame (101);
the fixing mechanism (200) comprises a second operating platform (203), a supporting platform (201) is arranged on one side of the second operating platform (203), a servo motor (202) is fixedly installed on the top of the supporting platform (201), a sliding groove is formed in the top of the second operating platform (203), a screw rod (204) and two guide rods I are arranged in the sliding groove, the screw rod (204) is located between the two guide rods I, one end, close to the supporting platform (201), of the screw rod (204) is fixedly connected to an output shaft of the servo motor (202), a moving base (205) is in threaded connection with one side, close to the supporting platform (201), of the screw rod (204), a fixing block (206) is arranged on the top of the moving base (205), an installation hole (207) is formed in the fixing block (206), two supporting blocks (208) are arranged on one side of the fixing block (206), and the two supporting blocks (208) are symmetrically distributed at the, the adjusting bolt (211) penetrates through the supporting block (208) and is connected with the pressing plate (209), a placing groove is formed in the inner side of the supporting block (208), a first spring (210) is arranged in the placing groove, and the first spring (210) is sleeved on the adjusting bolt (211).
5. The low-loss low-standing-wave radio-frequency cable assembly according to claim 4, wherein the first shearing mechanism (300) comprises a first mounting table (311), the first mounting table (311) is fixedly mounted inside the fixing frame (101), a first sliding groove is formed inside the first mounting table (311), a first sliding table (310) is slidably mounted in the first sliding groove, a first balance bar (312) is arranged on one side of the first mounting table (311), one side of the first sliding table (310) is slidably connected with the first balance bar (312), a first fixing table (303) is arranged on the top of the other side of the first sliding table (310), two first guide bars (308) are arranged on one side of the top of the first fixing table (303), a first cushion plate is fixedly connected to the tops of the two first guide bars (308), and a first air cylinder (301) is fixedly mounted on the first cushion plate, a first moving table (302) is clamped on the first guide rod (308), a piston rod of the first air cylinder (301) penetrates through the base plate and is connected to the top of the first moving table (302), a first upper fixing plate (304) and a first blade (306) are arranged on one side of the first mobile station (302), the first blade (306) is positioned at the inner side of a first upper fixing plate (304), a first lower fixing plate (307) is arranged at one side of the first fixing platform (303), the first lower fixing plate (307) and the first upper fixing plate (304) are positioned on the same side, the bottom of the first mounting table (311) is connected with a first connecting table (314), the other side of the first connecting table (314) is provided with a first limiting rod (313), the bottom of the other side of the first connecting platform (314) is provided with a first connecting block, the first connecting block is connected with a first oil cylinder (309), and a piston rod of the first oil cylinder (309) is connected to a second connecting block arranged at the bottom of the first sliding table (310).
6. The low-loss low-standing-wave radio-frequency cable assembly according to claim 4, wherein the second notching mechanism (400) comprises a second mounting table (405), the second mounting table (405) is fixedly mounted inside the fixing frame (101), a second sliding chute is formed inside the second mounting table (405), a second sliding table (407) is slidably mounted in the second sliding chute, a second balance rod (406) is arranged on one side of the second mounting table (405), one side of the second sliding table (407) is slidably connected with the second balance rod (406), a second fixing table (403) is arranged on the top of the other side of the second sliding table (407), two second guide rods (404) are arranged on one side of the top of the second fixing table (403), a second backing plate is fixedly connected to the tops of the two second guide rods (404), and a second air cylinder (401) is fixedly mounted on the second backing plate, a second moving table (402) is clamped on the second guide rod (404), a piston rod of the second air cylinder (401) penetrates through the second base plate and is connected to the top of the second moving table (402), a second upper blade (411), a third upper blade (412) and a fourth upper blade (413) are sequentially arranged on one side of the second mobile station (402) from outside to inside, a second lower blade (414), a third lower blade (415) and a fourth lower blade (416) are sequentially arranged on one side of the second fixed station (403) from outside to inside, the bottom of the second mounting table (405) is connected with a second connecting table (409), the other side of the second connecting table (409) is provided with a second limiting rod (410), a third connecting block is arranged at the bottom of the other side of the second connecting platform (409), a second oil cylinder (408) is connected on the third connecting block, and a piston rod of the second oil cylinder (408) is connected to a fourth connecting block arranged at the bottom of the second sliding table (407).
7. The low-loss low-standing-wave radio-frequency cable assembly according to claim 4, wherein the third skin clamping mechanism (500) comprises a third mounting table (506), the third mounting table (506) is fixedly mounted inside the fixing frame (101), a third sliding groove is formed inside the third mounting table (506), a third sliding table (507) is slidably mounted in the third sliding groove, a first connecting block and a first fixing plate are arranged at the bottom of one side of the third sliding table (507), the fourth cylinder (505) is fixedly mounted on the first fixing plate, a piston rod of the fourth cylinder (505) penetrates through the first fixing plate and is connected to the fifth connecting block, a third fixing table (503) is arranged at the top of the other side of the third sliding table (507), two third guide rods (504) are arranged at the top of one side of the third fixing table (503), and a third cushion plate is fixedly connected to the tops of the two third guide rods (504), a third air cylinder (501) is fixedly arranged on the third base plate, a third mobile station (502) is clamped on the third guide rod (504), a piston rod of the third air cylinder (501) penetrates through the base plate III and is connected to the top of the third moving platform (502), one side of the third mobile station (502) is provided with a second mounting groove, a third mounting block (508) is arranged in the second mounting groove, the bottom of the third mounting block (508) is sequentially provided with a first upper clamping table (514), a second upper clamping table (515) and a third upper clamping table (516) from outside to inside, the top of the third mounting block (508) is connected with a second spring (509), the other end of the second spring (509) is mounted on a third mobile station (502) through a first mounting screw (513), and a first lower clamping table (510), a second lower clamping table (511) and a third lower clamping table (512) are sequentially arranged on one side of the third fixing table (503) from outside to inside.
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| CN202011062052.3A CN112164906B (en) | 2020-09-30 | 2020-09-30 | Low-loss low-standing wave radio frequency cable assembly and cutting equipment thereof |
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| CN202011062052.3A CN112164906B (en) | 2020-09-30 | 2020-09-30 | Low-loss low-standing wave radio frequency cable assembly and cutting equipment thereof |
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| CN112164906A true CN112164906A (en) | 2021-01-01 |
| CN112164906B CN112164906B (en) | 2021-10-08 |
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