Phase-adjustable constant-impedance radio frequency connector, assembling device and method

Abstract

The invention discloses a phase-adjustable constant-impedance radio frequency connector and an assembling device and method. According to the constant-impedance radio-frequency connector, assembling errors of the inner conductor and the outer conductor can be ignored, after assembling is completed, the adjusting screw rod is rotated to enable the inner guide rod body to move along the central axis, and the depth of the inner guide rod body inserted into the inner conductor groove in the fixed shell is finely adjusted; therefore, the phase adjustment after the radio frequency connector is assembled and the phase adjustment in the later installation and use process are realized. Meanwhile, by the adoption of the assembling device and the assembling method, through the processes of automatic feeding, assembling, detecting and the like, the manual operation time is shortened, the labor intensity is reduced, the production efficiency can be remarkably improved, meanwhile, dependence on manpower is reduced, and the labor cost is reduced; in addition, due to the improvement of the production efficiency and the guarantee of the product quality, the production cost is indirectly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency connectors, and in particular to a phase-adjustable constant impedance radio frequency connector, an assembling device and a method. Background Art

[0002] RF coaxial connectors are usually signal transmission components installed on cables or instruments, and are an indispensable key component of coaxial transmission systems. RF coaxial connectors are usually divided into threaded, bayonet, push-in, floating blind-plug and other types. With the rise of mobile Internet big data and the Internet of Things, the market demand for floating blind-plug RF coaxial connectors is increasing. The contacts in high- and low-frequency mixed rectangular connectors and circular connectors are required to have a certain radial and axial float to achieve the blind plug function.

[0003] According to the skin effect, RF energy is always transmitted on the surface between conductors. The characteristic impedance of the RF coaxial connector is determined by the ratio of the diameter of the outer conductor to the inner conductor and the dielectric constant of the insulating medium between the two conductors. When the characteristic impedance of the entire system is matched, its signal transmission efficiency is the highest.

[0004] In a normally designed RF coaxial connector, the dimensions of the two inner conductors that are connected are stable, and the phase of the connector is adjusted by connecting the two inner conductors. However, due to the existence of assembly errors, RF coaxial connectors assembled by traditional assembly methods often find it difficult to achieve precise phase requirements, and cannot be adjusted after assembly, so they can only be disassembled and adjusted continuously, resulting in a cumbersome production and debugging process for constant impedance RF connectors with high phase requirements, and a low yield rate. Summary of the invention

[0005] The object of the present invention is to provide a phase-adjustable constant impedance radio frequency connector, an assembly device and a method thereof, so as to solve the problems existing in the assembly of traditional radio frequency coaxial connectors.

[0006] In order to solve the above technical problems, the present invention provides a phase-adjustable constant impedance radio frequency connector, comprising a fixed housing, an adjustable inner conductor assembly and an adjusting screw; The adjusting inner conductor assembly is coaxially mounted inside the adjusting screw and is threadably connected to the inner thread of the adjusting screw; The adjusting screw is coaxially mounted inside the fixed housing and is threadedly connected to the external thread of the fixed housing; The pitch of the internal thread of the adjusting screw is greater than the pitch of the external thread, and is a differential thread; when the adjusting screw is rotated, the adjusting inner conductor assembly moves along the central axis, thereby adjusting the depth of the inner guide rod body of the adjusting inner conductor assembly inserted into the inner conductor slot in the fixed outer shell, so that the connection between the two inner conductors produces a phase change.

[0007] Preferably, the adjusting inner conductor assembly comprises an inner guide rod body, a threaded bushing, an elastic contact sleeve, an inner bushing and a welding sleeve; the inner guide rod body, the elastic contact sleeve, the inner bushing and the welding sleeve are connected in sequence and sleeved and installed in the threaded bushing; The external thread of the threaded bushing is threadably connected to the internal thread of the adjusting screw, and when the threaded bushing is rotated, the inner guide rod body moves along the central axis, thereby roughly adjusting the depth of the inner guide rod body inserted into the inner conductor slot in the fixed housing; When the adjusting screw is rotated, the inner guide rod body moves along the central axis, thereby finely adjusting the depth of the inner guide rod body inserted into the inner conductor slot in the fixed housing.

[0008] Preferably, a locking screw is provided at the tail of the welding sleeve, and the locking screw is inserted into the threaded bushing and is threadably connected with the internal thread of the threaded bushing. As the locking screw rotates, the positions of the inner guide rod body, the elastic contact sleeve, the inner bushing and the welding sleeve in the threaded bushing are locked; A first locking nut is installed on the external thread of the adjusting screw, and the position of the adjusting screw and the fixed housing is locked by the first locking nut; A second locking nut is installed on the external thread of the threaded bushing, and the position of the threaded bushing and the fixed housing is locked by the second locking nut.

[0009] Preferably, the first locking nut and the second locking nut are both anti-loosening nuts; a plurality of knife-shaped teeth are processed on the locking end surface of the nut, and the plurality of knife-shaped teeth are stacked around the central axis of the nut.

[0010] An assembly device for a phase-adjustable constant impedance radio frequency connector comprises a rotating workbench; a plurality of positioning fixtures are arranged on the rotating workbench to place components of the radio frequency connector; The circumference of the rotating table is sequentially provided with: A fixed shell picking mechanism is used to place the pre-assembled fixed shell assembly into the positioning tool; An adjusting screw assembly mechanism is used to screw and install the adjusting screw inside the fixed housing; The adjusting inner conductor assembly picking mechanism is used to place the pre-assembled adjusting inner conductor assembly on the adjusting screw; The adjusting inner conductor assembly assembly mechanism is used to screw and install the adjusting inner conductor assembly inside the adjusting screw; The locking screw assembly mechanism is used to screw the locking screw into the inner conductor adjustment assembly; A testing mechanism, which is used to test the quality of the assembled constant impedance RF connector; The fixed shell picking mechanism is equipped with a first feeding device to continuously convey the fixed shell so that the fixed shell picking mechanism can pick up the pre-assembled fixed shell assembly and place it in the positioning tooling; The adjusting inner conductor component picking mechanism is equipped with a second feeding device to continuously feed the adjusting inner conductor component so that the adjusting inner conductor component picking mechanism can pick up the pre-assembled adjusting inner conductor component and place it above the adjusting screw; The second feeding device is also provided with a preforming device on one side, which can pre-assemble the inner guide rod body, the threaded bushing, the elastic contact sleeve, the inner bushing and the welding sleeve to form an adjustable inner conductor assembly.

[0011] Preferably, seven sets of positioning tools are evenly arranged on the rotating workbench, and the rotating workbench drives the seven sets of positioning tools to cyclically operate under the action of the rotating motor. In the assembly order, the seven sets of positioning tools are the fixed shell picking station, the adjusting screw assembly station, the adjusting inner conductor assembly picking station, the adjusting inner conductor assembly station, the locking screw assembly station, the detection station, and the discharging station; A plurality of groups of unpowered supporting wheels are provided below the rotating worktable to support the rotating worktable so that it can rotate smoothly around the central axis; A locking cylinder is also provided under the rotary workbench, and the piston rod of the locking cylinder is inserted into the locking hole of the rotary workbench from bottom to top, thereby locking the rotation of the rotary workbench for maintenance after assembly errors or positioning, installation or replacement of positioning tooling on the rotary workbench.

[0012] Preferably, the fixed shell picking mechanism comprises an elastic clamp and a material pressing cylinder, and the material pressing cylinder moves the fixed shell clamped by the elastic clamp downward into the positioning tooling; The elastic clamping claws are mainly composed of a plurality of movable rubber claws and a preload spring. Under the action of the preload spring, the plurality of rubber claws are stretched outwards to clamp and fix the housing. The fixed shell picking mechanism also includes a positioning plate and a positioning plate adjusting cylinder. Under the action of the positioning plate adjusting cylinder, the positioning plate is driven to move horizontally so that it is connected with the feeding channel of the first feeding device; and the positioning plate is provided with a contoured hole of the fixed shell to position the fixed shells transferred from the feeding channel one by one.

[0013] Preferably, the adjusting screw assembly mechanism comprises a screw clamp, a screw screwing motor, and a screw lifting cylinder. The screw clamp clamps the adjusting screw and screws the adjusting screw into the fixed housing under the rotation of the screw screwing motor; and at the same time, the adjusting screw rotates and moves downward under the drive of the screw lifting cylinder. The adjusting screw assembly mechanism also includes a claw and a claw cylinder, wherein the claw is inserted into a slot on one side of the positioning tool under the action of the claw cylinder to fix the fixed housing in the positioning tool; The adjusting inner conductor component picking mechanism comprises an adjusting inner conductor component picking clamp and an adjusting inner conductor component flipping cylinder, an adjusting inner conductor component picking lifting cylinder, a first transverse cylinder and a second transverse cylinder which are sequentially connected to the clamp; under the action of the adjusting inner conductor component picking lifting cylinder, the first transverse cylinder and the second transverse cylinder, the adjusting inner conductor component picking clamp is driven to move, so as to pick up the adjusting inner conductor component in the feeding channel of the second feeding device; and the adjusting inner conductor component flipping cylinder can flip 180 degrees, so that the adjusting inner conductor component is placed in the correct position above the adjusting screw; The assembly mechanism for adjusting the inner conductor assembly comprises an adjusting inner conductor assembly screwing jaw, an adjusting inner conductor assembly screwing motor and an adjusting inner conductor assembly screwing lifting cylinder; under the action of the adjusting inner conductor assembly screwing motor, the adjusting inner conductor assembly screwing jaw is driven to screw the adjusting inner conductor assembly into the adjusting screw rod, and the adjusting inner conductor assembly is driven to rotate and move downward at the same time. The detection mechanism includes a detection head and a detection cylinder, and the detection head is inserted into the assembled constant impedance radio frequency connector through the detection cylinder for detection.

[0014] Preferably, the preforming device includes a pressing head, which is connected to the preforming cylinder through a pressing rod; the inner guide rod body, threaded bushing, elastic contact sleeve, inner bushing and welding sleeve are placed on the preforming tooling, and the adjusted inner conductor assembly is preassembled and formed under the action of the pressing head.

[0015] The present invention also provides a method for using an assembly device of a phase-adjustable constant impedance radio frequency connector, comprising the following steps: Step A: Pre-assembly preparation: Under the action of the press-fitting head, the inner guide rod body, the threaded bushing, the elastic contact sleeve, the inner bushing and the welding sleeve in the pre-formed tooling are pre-assembled to form an adjustable inner conductor assembly; Step B: Material preparation: Place the fixed housing assembly preassembled in the previous process into the vibration plate of the first feeding device for standby use; at the same time, place the preassembled adjustable inner conductor components one by one into the vibration plate of the second feeding device for standby use; Step C: Continuous assembly: First, start the rotary motor to drive the rotary table to rotate intermittently according to the assembly work beat; Step C1: At the fixed shell picking station, a fixed shell is positioned in the positioning plate along the feeding channel, and at the same time, the elastic clamping claw of the fixed shell picking mechanism clamps the fixed shell, and under the action of the pressing cylinder, it is moved downward to the positioning tooling of the station; Step C2: At the adjusting screw assembly station, the screw clamping claw clamps the adjusting screw, and under the action of the screw screwing motor and the screw lifting cylinder, the adjusting screw is screwed into the fixed housing; Step C3: At the adjusting inner conductor component picking station, the adjusting inner conductor component picking claws clamp the adjusting inner conductor component on the feeding channel of the second feeding device, and move it to the top of the adjusting screw under the action of the adjusting inner conductor component picking lifting cylinder, the first transverse cylinder and the second transverse cylinder; at the same time, the front and back of the adjusting screw are identified by the camera, and the adjusting inner conductor component is placed in the adjusting screw after adjusting the direction by the turning cylinder; Step C4: at the adjusting inner conductor assembly assembly station, the adjusting inner conductor assembly screwing claw clamps the adjusting inner conductor assembly, and under the action of the adjusting inner conductor assembly screwing motor and the adjusting inner conductor assembly screwing lifting cylinder, screws the adjusting inner conductor assembly into the adjusting screw; Step C5: At the locking screw assembly station, the clamping claws clamp the locking screw, and under the action of the screwing motor and the cylinder, screw the locking screw into the adjusting inner conductor assembly; Step C6: At the inspection station, the inspection head is inserted into the assembled constant impedance RF connector for inspection under the action of the inspection cylinder; Step C7: At the unloading station, the constant impedance RF connector that has been tested is unloaded from here; Step D: The seven sets of positioning tools on the rotating workbench correspond to the seven workstations in step C, and the seven sets of positioning tools are cyclically operated in the seven workstations in sequence to achieve continuous assembly of constant impedance RF connectors.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The constant impedance RF connector of the present invention can ignore the assembly error of the inner and outer conductors. After the assembly is completed, the adjusting screw is rotated to move the inner guide rod body along the central axis, and the depth of the inner guide rod body inserted into the inner conductor slot in the fixed housing is finely adjusted, thereby realizing the phase adjustment of the RF connector after assembly and the phase adjustment during the later installation and use process; 2. The constant impedance RF connector of the present invention can achieve precise phase adjustment. Specifically, the inner and outer threads of the adjusting screw are differential threads, for example, the inner and outer pitch ratio is 1:2, the outer thread of the adjusting screw rotates one circle around the inner thread of the fixed housing, and the adjusting inner conductor assembly rotates half a circle around the inner thread of the adjusting screw, thereby achieving precise fine-tuning of the adjusting inner conductor assembly; 3. The assembly device and assembly method of the present invention can reduce the time and labor intensity of manual operation through automatic feeding, assembly and testing processes, which can significantly improve production efficiency, reduce dependence on manual labor, and reduce labor costs; at the same time, due to the improvement of production efficiency and the guarantee of product quality, the production cost is also indirectly reduced. And because the RF connector of the present invention can achieve later fine-tuning, it can ignore the assembly errors of the internal and external conductors, thereby realizing automated mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall cross-sectional view of the phase-adjustable constant impedance radio frequency connector provided by the present invention; Figure 2 It is a structural schematic diagram of the locking nut provided by the present invention; Figure 3 It is a structural schematic diagram of the first viewing angle of an assembly device of a phase-adjustable constant impedance radio frequency connector provided by the present invention; Figure 4 It is a structural schematic diagram of the second viewing angle of the assembly device of the phase-adjustable constant impedance radio frequency connector provided by the present invention; Figure 5 It is a top view of an assembly device of a phase-adjustable constant impedance radio frequency connector provided by the present invention; Figure 6 It is a front structural schematic diagram of the rotary worktable provided by the present invention; Figure 7 It is a schematic diagram of the back structure of the rotary worktable provided by the present invention; Figure 8 It is a structural schematic diagram of the fixed shell picking mechanism provided by the present invention; Fig. 9 It is a structural schematic diagram of the adjusting screw assembly mechanism provided by the present invention; Fig.10 It is a structural schematic diagram of the picking mechanism for adjusting the inner conductor assembly provided by the present invention; Fig.11 It is a structural schematic diagram of the assembly mechanism for adjusting the inner conductor assembly provided by the present invention; Fig.12 It is a structural schematic diagram of the detection mechanism provided by the present invention; Fig.13 It is a structural schematic diagram of the preforming device provided by the present invention.

[0018] In the figure: 1, fixed housing; 101, inner conductor slot; 3, inner guide rod body; 4, threaded bushing; 5, elastic contact sleeve; 6, inner bushing; 7, welding sleeve; 8, locking screw; 9, first locking nut; 10, adjusting screw; 11, second locking nut; 100, adjusting inner conductor assembly; 200, knife-shaped tooth piece; 12. Rotating worktable; 121. Positioning tooling; 13. Fixed shell picking mechanism; 131. Elastic clamping claw; 132. Material pressing cylinder; 133. Positioning plate; 134. Positioning plate adjusting cylinder; 14. Adjusting screw assembly mechanism; 141. Screw clamping claw; 142. Screw twisting motor; 143. Screw lifting cylinder; 144. Clamping claw; 145. Clamping claw cylinder; 15. Adjust the inner conductor assembly picking mechanism; 151. Adjust the inner conductor assembly picking claw; 152. Adjust the inner conductor assembly turning cylinder; 153. Adjust the inner conductor assembly picking lifting cylinder; 154. First lateral movement cylinder; 155. Second lateral movement cylinder; 16. Adjust the inner conductor assembly assembly mechanism; 161. Adjust the inner conductor assembly to screw the clamping claw; 162. Adjust the inner conductor assembly to screw the motor; 163. Adjust the inner conductor assembly to screw the lifting cylinder; 17. Locking screw assembly mechanism; 18. Detection mechanism; 181. Detection head; 182. Detection cylinder; 19. The first feeding device; 20. Second feeding device; 21. Preforming device; 211. Pressing head; 212. Pressing rod; 213. Preforming cylinder; 214. Preforming tooling. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] In addition, the features, operations, and characteristics described in the specification can be combined in any appropriate manner to form various embodiments. Similarly, the steps or actions described in the method can also be adjusted in order in a manner that can be easily seen by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for the purpose of describing a certain embodiment, and are not necessarily such sequences, unless otherwise stated that a certain sequence must be followed.

[0023] Embodiment 1 The present invention provides a phase-adjustable constant impedance radio frequency connector, see Figure 1 , including a fixed shell 1, an adjusting inner conductor component 100 and an adjusting screw 10; the adjusting inner conductor component 100 is coaxially installed inside the adjusting screw 10 and is threadedly connected with the internal thread of the adjusting screw 10; the adjusting screw 10 is coaxially installed inside the fixed shell 1 and is threadedly connected with the external thread of the fixed shell 1; the internal thread pitch of the adjusting screw 10 is greater than the external thread pitch, and it is a differential thread; when the adjusting screw 10 is rotated, the adjusting inner conductor component 100 moves along the central axis, thereby adjusting the depth of the inner guide rod body 3 of the adjusting inner conductor component 100 inserted into the inner conductor slot 101 in the fixed shell 1, so that the connection of the two inner conductors produces a phase change.

[0024] Specifically, the inner and outer threads of the adjusting screw are differential threads. For example, the inner and outer pitch ratio is 1:2. The outer thread of the adjusting screw rotates one circle around the inner thread of the fixed housing, and the adjusting inner conductor assembly rotates half a circle around the inner thread of the adjusting screw, thereby achieving precise fine-tuning of the adjusting inner conductor assembly.

[0025] Specifically, the adjusting inner conductor assembly 100 comprises an inner guide rod body 3, a threaded bushing 4, an elastic contact sleeve 5, an inner bushing 6 and a welding sleeve 7; the inner guide rod body 3, the elastic contact sleeve 5, the inner bushing 6 and the welding sleeve 7 are connected in sequence and sleeved and installed in the threaded bushing 4; The external thread of the threaded bushing 4 is threadably connected to the internal thread of the adjusting screw 10. When the threaded bushing 4 is rotated, the inner guide rod body 3 moves along the central axis, thereby coarsely adjusting the depth of the inner guide rod body 3 inserted into the inner conductor slot 101 in the fixed outer shell 1; when the adjusting screw 10 is rotated, the inner guide rod body 3 moves along the central axis, thereby finely adjusting the depth of the inner guide rod body 3 inserted into the inner conductor slot 101 in the fixed outer shell 1.

[0026] Specifically, a locking screw 8 is provided at the tail of the welding sleeve 7, and the locking screw 8 is inserted into the interior of the threaded bushing 4 and is threadedly connected to the internal thread of the threaded bushing 4. As the locking screw 8 rotates, the positions of the inner guide rod body 3, the elastic contact sleeve 5, the inner bushing 6 and the welding sleeve 7 in the threaded bushing 4 are locked; a first locking nut 9 is installed on the external thread of the adjusting screw 10, and the position of the adjusting screw 10 and the fixed shell 1 is locked by the first locking nut 9; a second locking nut 11 is installed on the external thread of the threaded bushing 4, and the position of the threaded bushing 4 and the fixed shell 1 is locked by the second locking nut 11.

[0027] For further information, see Figure 2 The first locking nut 9 and the second locking nut 11 are both nuts for preventing loosening and retreating; a plurality of knife-shaped teeth 200 are processed on the locking end surface of the nut, and the plurality of knife-shaped teeth 200 are stacked around the central axis of the nut. When the locking end surface of the nut is locked, the knife-shaped teeth 200 bite the locking end surface on the other side, so that the nut can achieve the function of preventing loosening and retreating.

[0028] Embodiment 2 The present invention also provides an assembly device for a phase-adjustable constant impedance radio frequency connector, see Figure 3-5 , including a rotating workbench 12; a plurality of positioning fixtures 121 are provided on the rotating workbench 12 for placing components of the RF connector.

[0029] The following are arranged in sequence on the circumference of the rotating table 12: The fixed shell picking mechanism 13 places the pre-assembled fixed shell 1 assembly into the positioning tool 121; The adjusting screw assembly mechanism 14 is used to screw and install the adjusting screw 10 inside the fixed housing 1; The adjusting inner conductor assembly picking mechanism 15 is used to place the pre-assembled adjusting inner conductor assembly 100 on the adjusting screw 10; The inner conductor assembly assembly mechanism 16 is adjusted to screw the inner conductor assembly 100 into the adjusting screw 10; The locking screw assembly mechanism 17 is used to screw the locking screw 8 into the inner part of the adjusting inner conductor assembly 100; A detection mechanism 18 is used to detect the quality of the assembled constant impedance RF connector; The fixed shell picking mechanism 13 is equipped with a first feeding device 19 to continuously convey the fixed shell 1 so that the fixed shell picking mechanism 13 can pick up the pre-assembled fixed shell 1 assembly and place it in the positioning tool 121; The adjusting inner conductor component picking mechanism 15 is equipped with a second feeding device 20 to continuously feed the adjusting inner conductor component 100 so that the adjusting inner conductor component picking mechanism 15 can pick up the pre-assembled adjusting inner conductor component 100 and place it on the adjusting screw 10; The second feeding device 20 is also provided with a preforming device 21 on one side, which can pre-assemble the inner guide rod body 3 , the threaded bushing 4 , the elastic contact sleeve 5 , the inner bushing 6 and the welding sleeve 7 into an adjustable inner conductor assembly 100 .

[0030] In some embodiments, the first feeding device 19 and the second feeding device 20 both include a vibration plate and a feeding channel extending outward from the vibration plate, and the components of the RF connector are arranged in sequence by the vibration plate and then transported forward through the feeding channel.

[0031] The first feeding device 19 and the second feeding device 20 are also equipped with a feeding hopper, through which the components of the RF connector are intermittently added to the vibration plate.

[0032] Furthermore, the preforming device 21 is arranged beside the second feeding device 20 , and the preassembled and formed adjusting inner conductor components 100 are first collected in the feeding hopper and then fed into the vibration plate.

[0033] For details, please refer to Figure 6 and Figure 7 Seven groups of positioning tools 121 are evenly arranged on the rotating workbench 12. The rotating workbench 12 drives the seven groups of positioning tools 121 to operate cyclically under the action of the rotating motor 122. In the assembly order, the seven groups of positioning tools 121 are respectively a fixed shell picking station, an adjusting screw assembly station, an adjusting inner conductor assembly picking station, an adjusting inner conductor assembly station, a locking screw assembly station, a detection station and a discharging station.

[0034] Furthermore, a plurality of groups of non-powered support wheels 123 are provided under the rotating worktable 12 for supporting the rotating worktable 12 so that it can rotate smoothly around the central axis. A locking cylinder 124 is also provided under the rotating worktable 12, and the piston rod of the locking cylinder 124 is inserted from bottom to top into the locking hole of the rotating worktable 12, thereby locking the rotation of the rotating worktable 12 for maintenance after an assembly error or for positioning, installing or replacing the positioning tooling 121 on the rotating worktable 12.

[0035] For details, please refer to Figure 8 The fixed shell picking mechanism 13 includes an elastic clamp 131 and a pressing cylinder 132 . The pressing cylinder 132 moves the fixed shell 1 clamped by the elastic clamp 131 downward to the positioning tool 121 .

[0036] The elastic clamping claw 131 is mainly composed of a plurality of movable rubber claws and a pre-tightening spring. Under the action of the pre-tightening spring, the plurality of rubber claws are stretched outward to clamp the fixed housing 1. Specifically, when clamping, the plurality of rubber claws extend into the inner hole at the tail of the fixed housing 1, and the outward supporting force provided by the pre-tightening spring clamps the fixed housing 1. The pressing cylinder 132 drives the elastic clamping claw 131 to transfer the clamped fixed housing 1 to the positioning fixture 121 until the fixed housing 1 is fastened and plugged with the positioning fixture 121; the pressing cylinder 132 drives the elastic clamping claw 131 upward to wait for the next fixed housing 1 to be clamped.

[0037] The fixed shell picking mechanism 13 also includes a positioning plate 133 and a positioning plate adjusting cylinder 134. The positioning plate adjusting cylinder 134 drives the positioning plate 133 to move horizontally so that it is connected with the feeding channel of the first feeding device 19; and the positioning plate 133 is provided with a contoured hole of the fixed shell to position the fixed shell 1 transferred from the feeding channel one by one.

[0038] For details, please refer to Fig. 9 The adjusting screw assembly mechanism 14 includes a screw clamp 141, a screw rotating motor 142, and a screw lifting cylinder 143. The screw clamp 141 clamps the adjusting screw 10 and screws the adjusting screw 10 into the fixed housing 1 under the rotation of the screw rotating motor 142; at the same time, the adjusting screw 10 rotates and moves downward under the drive of the screw lifting cylinder 143.

[0039] Furthermore, the adjusting screw assembly mechanism 14 also includes a claw 144 and a claw cylinder 145. The claw 144 is inserted into the slot on one side of the positioning tool 121 under the action of the claw cylinder 145 to fix the fixed shell 1 in the positioning tool 121; when the adjusting screw 10 is screwed into the fixed shell 1, the fixed shell 1 needs to be locked by the claw 144 so that the two can be threadedly connected.

[0040] For details, please refer to Fig.10The adjusting inner conductor component picking mechanism 15 includes an adjusting inner conductor component picking clamp 151 and an adjusting inner conductor component flipping cylinder 152, an adjusting inner conductor component picking lifting cylinder 153, a first transverse movement cylinder 154 and a second transverse movement cylinder 155 which are connected to the clamp in sequence; under the action of the adjusting inner conductor component picking lifting cylinder 153, the first transverse movement cylinder 154 and the second transverse movement cylinder 155, the adjusting inner conductor component picking clamp 151 is driven to move, so as to pick up the adjusting inner conductor component 100 in the feeding channel of the second feeding device 20; and the adjusting inner conductor component flipping cylinder 152 can be flipped 180 degrees, so that the adjusting inner conductor component 100 is placed upright above the adjusting screw 10.

[0041] For details, please refer to Fig.11 The adjusting inner conductor component assembly mechanism 16 includes an adjusting inner conductor component screwing jaw 161, an adjusting inner conductor component screwing motor 162 and an adjusting inner conductor component screwing lifting cylinder 163; under the action of the adjusting inner conductor component screwing motor 162, the adjusting inner conductor component screwing jaw 161 is driven to screw the adjusting inner conductor component 100 into the adjusting screw 10, and at the same time, the adjusting inner conductor component is driven to rotate and descend at the same time.

[0042] In this embodiment, the structure of the locking screw assembly mechanism 17 is similar to that of the adjusting screw assembly mechanism 14 . Similarly, under the joint action of the lifting cylinder and the screwing motor, the locking screw 8 is screwed and installed inside the adjusting inner conductor assembly 100 .

[0043] For details, please refer to Fig.12 The detection mechanism 18 includes a detection head 181 and a detection cylinder 182. The detection head 181 is inserted into the assembled constant impedance RF connector through the detection cylinder 182 for detection.

[0044] In one embodiment, the detection head 181 may be an electrical signal connector, which is inserted into the constant impedance RF connector to detect the performance of the constant impedance RF connector.

[0045] For details, please refer to Fig.13 The preforming device 21 includes a pressing head 211, which is connected to a preforming cylinder 213 through a pressing rod 212; the inner guide rod body 3, the threaded bushing 4, the elastic contact sleeve 5, the inner bushing 6 and the welding sleeve 7 are placed on the preforming tooling 214, and the inner conductor assembly 100 is preassembled and formed under the action of the pressing head 211.

[0046] Embodiment 3 The present invention also provides a method for using a phase-adjustable constant impedance RF connector assembly device, see Figure 1-13 , including the following steps: Step A: pre-assembly preparation: under the action of the press-fitting head 211, the inner guide rod body 3, the threaded bushing 4, the elastic contact sleeve 5, the inner bushing 6 and the welding sleeve 7 in the pre-forming tool 214 are pre-assembled to form the adjustable inner conductor assembly 100; Step B: Material preparation: Place the fixed housing 1 assembly preassembled in the previous process into the vibration plate of the first feeding device 19 for standby use; at the same time, place the preassembled adjustable inner conductor components 100 one by one into the vibration plate of the second feeding device 20 for standby use; Step C: Continuous assembly: First, start the rotary motor 122 to drive the rotary table 12 to rotate intermittently according to the assembly work rhythm; Step C1: At the fixed shell picking station, a fixed shell 1 is positioned in the positioning plate 133 along the feeding channel, and at the same time, the elastic clamping claw 131 of the fixed shell picking mechanism 13 clamps the fixed shell 1 and moves downward to the positioning tool 121 of the station under the action of the pressing cylinder 132; Step C2: At the adjusting screw assembly station, the screw clamp 141 clamps the adjusting screw 10, and under the action of the screw screwing motor 142 and the screw lifting cylinder 143, the adjusting screw 10 is screwed into the fixed housing 1; Step C3: At the adjusting inner conductor component picking station, the adjusting inner conductor component picking clamp 151 clamps the adjusting inner conductor component 100 on the feeding channel of the second feeding device 20, and moves it to the top of the adjusting screw 10 under the action of the adjusting inner conductor component picking lifting cylinder 153, the first transverse cylinder 154 and the second transverse cylinder 155; at the same time, the front and back of the adjusting screw 10 are identified by the camera, and the adjusting inner conductor component is placed in the adjusting screw 10 after adjusting the direction by the adjusting inner conductor component flipping cylinder 152; Step C4: At the adjusting inner conductor assembly assembly station, the adjusting inner conductor assembly screwing jaw 161 clamps the adjusting inner conductor assembly 100, and under the action of the adjusting inner conductor assembly screwing motor 162 and the adjusting inner conductor assembly screwing lifting cylinder 163, the adjusting inner conductor assembly 100 is screwed and installed inside the adjusting screw 10; Step C5: At the locking screw assembly station, the clamping claws clamp the locking screw 8, and under the action of the screwing motor and the cylinder, screw the locking screw 8 to be installed inside the adjusting inner conductor assembly 100; Step C6: At the inspection station, the inspection head 181 extends into the assembled constant impedance RF connector for inspection under the action of the inspection cylinder 182; Step C7: At the unloading station, the constant impedance RF connector that has been tested is unloaded from here; Step D: The seven sets of positioning tools 121 on the rotating workbench 12 correspond to the seven workstations in step C, and the seven sets of positioning tools 121 circulate in the seven workstations in sequence to achieve continuous assembly of constant impedance RF connectors.

[0047] The assembly device and assembly method of the present invention can reduce the time and labor intensity of manual operation through automatic feeding, assembly and testing processes, significantly improve production efficiency, reduce dependence on manual labor, and reduce labor costs; at the same time, due to the improvement of production efficiency and the guarantee of product quality, the production cost is also indirectly reduced. And because the RF connector of the present invention can achieve later fine-tuning, it can ignore the assembly errors of the internal and external conductors, thereby realizing automated mass production.

[0048] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A phase-adjustable constant impedance radio frequency connector, characterized in that: It comprises a fixed housing (1), an adjusting inner conductor component (100) and an adjusting screw (10); The adjusting inner conductor assembly (100) is coaxially mounted inside the adjusting screw (10) and is threadably connected to the internal thread of the adjusting screw (10); The adjusting screw (10) is coaxially mounted inside the fixed housing (1) and is threadably connected to the external thread of the fixed housing (1); The pitch of the internal thread of the adjusting screw (10) is greater than the pitch of the external thread, and is a differential thread; when the adjusting screw (10) is rotated, the adjusting inner conductor assembly (100) moves along the central axis, thereby adjusting the depth of the inner guide rod body (3) of the adjusting inner conductor assembly (100) inserted into the inner conductor slot (101) in the fixed housing (1), so that the connection of the two inner conductors produces a phase change.

2. A phase-adjustable constant impedance radio frequency connector as claimed in claim 1, characterized in that: The adjustable inner conductor assembly (100) comprises an inner guide rod body (3), a threaded bushing (4), an elastic contact sleeve (5), an inner bushing (6) and a welding sleeve (7); the inner guide rod body (3), the elastic contact sleeve (5), the inner bushing (6) and the welding sleeve (7) are connected in sequence and sleeved and installed in the threaded bushing (4); The external thread of the threaded bushing (4) is threadably connected to the internal thread of the adjusting screw (10); when the threaded bushing (4) is rotated, the inner guide rod body (3) moves along the central axis, thereby roughly adjusting the depth of the inner guide rod body (3) inserted into the inner conductor slot (101) in the fixed housing (1); When the adjusting screw (10) is rotated, the inner guide rod body (3) moves along the central axis, thereby finely adjusting the depth of the inner guide rod body (3) inserted into the inner conductor slot (101) in the fixed housing (1).

3. A phase-adjustable constant impedance radio frequency connector as claimed in claim 2, characterized in that: A locking screw (8) is provided at the tail of the welding sleeve (7), and the locking screw (8) is inserted into the interior of the threaded bushing (4) and is threadably connected to the internal thread of the threaded bushing (4). As the locking screw (8) rotates, the positions of the inner guide rod body (3), the elastic contact sleeve (5), the inner bushing (6) and the welding sleeve (7) in the threaded bushing (4) are locked; A first locking nut (9) is mounted on the external thread of the adjusting screw (10), and the position of the adjusting screw (10) and the fixed housing (1) is locked by the first locking nut (9); A second locking nut (11) is mounted on the external thread of the threaded bushing (4), and the position of the threaded bushing (4) and the fixed housing (1) is locked by the second locking nut (11).

4. A phase-adjustable constant impedance radio frequency connector as claimed in claim 3, characterized in that: The first locking nut (9) and the second locking nut (11) are both anti-loosening nuts; a plurality of knife-shaped tooth pieces (200) are processed on the locking end faces of the nuts, and the plurality of knife-shaped tooth pieces (200) are arranged in layers around the central axis of the nut.

5. An assembly device for a phase-adjustable constant impedance radio frequency connector according to any one of claims 1 to 4, characterized in that: It comprises a rotating workbench (12); a plurality of positioning fixtures (121) are provided on the rotating workbench (12) for placing components of a radio frequency connector; The circumference of the rotating worktable (12) is provided with: A fixed shell picking mechanism (13) is used to place the pre-assembled fixed shell (1) assembly into a positioning tool (121); An adjusting screw assembly mechanism (14) is used to screw the adjusting screw (10) into the interior of the fixed housing (1); An adjusting inner conductor assembly picking mechanism (15) is used to place the pre-assembled adjusting inner conductor assembly (100) above the adjusting screw rod (10); An adjusting inner conductor assembly mechanism (16) is used to screw the adjusting inner conductor assembly (100) into the interior of the adjusting screw rod (10); A locking screw assembly mechanism (17) is used to screw the locking screw (8) into the interior of the adjusting inner conductor assembly (100); A detection mechanism (18), which detects the quality of the assembled constant impedance radio frequency connector through the detection mechanism (18); The fixed shell picking mechanism (13) is provided with a first feeding device (19) for continuously conveying the fixed shell (1) so that the fixed shell picking mechanism (13) can pick up the pre-assembled fixed shell (1) assembly and place it in the positioning tool (121); The adjusting inner conductor component picking mechanism (15) is provided with a second feeding device (20) for continuously feeding the adjusting inner conductor component (100) so that the adjusting inner conductor component picking mechanism (15) can pick up the pre-assembled adjusting inner conductor component (100) and place it above the adjusting screw (10); A preforming device (21) is also provided on one side of the second feeding device (20), which is capable of pre-assembling the inner guide rod body (3), the threaded bushing (4), the elastic contact sleeve (5), the inner bushing (6) and the welding sleeve (7) to form an adjustable inner conductor assembly (100).

6. The assembly device of the phase-adjustable constant impedance radio frequency connector according to claim 5, characterized in that: Seven groups of positioning tools (121) are evenly arranged on the rotating worktable (12). The rotating worktable (12) drives the seven groups of positioning tools (121) to operate cyclically under the action of a rotating motor (122). In the assembly order, the seven groups of positioning tools (121) are, in sequence, a fixed shell picking station, an adjusting screw assembly station, an adjusting inner conductor assembly picking station, an adjusting inner conductor assembly station, a locking screw assembly station, a detection station, and a discharge station; A plurality of groups of unpowered support wheels (123) are provided below the rotating worktable (12) for supporting the rotating worktable (12) so that it rotates smoothly around a central axis; A locking cylinder (124) is also provided below the rotary table (12), and a piston rod of the locking cylinder (124) is inserted from bottom to top into a locking hole of the rotary table (12), thereby locking the rotation of the rotary table (12) for maintenance after an assembly error or for positioning, installing or replacing a positioning tool (121) on the rotary table (12).

7. The assembly device of the phase-adjustable constant impedance radio frequency connector according to claim 5, characterized in that: The fixed shell picking mechanism (13) comprises an elastic clamp (131) and a material pressing cylinder (132), wherein the material pressing cylinder (132) moves the fixed shell (1) clamped by the elastic clamp (131) downward into the positioning tool (121); The elastic clamping claw (131) is mainly composed of a plurality of movable rubber claws and a preload spring. Under the action of the preload spring, the plurality of rubber claws are stretched outwards to clamp and fix the housing (1). The fixed shell picking mechanism (13) further comprises a positioning plate (133) and a positioning plate adjusting cylinder (134), wherein the positioning plate adjusting cylinder (134) drives the positioning plate (133) to move horizontally so as to connect with the feeding channel of the first feeding device (19); and the positioning plate (133) is provided with a shaped hole of the fixed shell to position the fixed shells (1) transferred from the feeding channel one by one.

8. The assembly device of the phase-adjustable constant impedance radio frequency connector according to claim 5, characterized in that: The adjusting screw assembly mechanism (14) comprises a screw clamp (141), a screw screwing motor (142), and a screw lifting cylinder (143); the screw clamp (141) clamps the adjusting screw (10) and screws the adjusting screw (10) into the fixed housing (1) under the rotation of the screw screwing motor (142); and at the same time, the screw moves downward while rotating under the drive of the screw lifting cylinder (143); The adjusting screw assembly mechanism (14) further comprises a clamping claw (144) and a clamping claw cylinder (145); the clamping claw (144) is inserted into a clamping groove on one side of the positioning tool (121) under the action of the clamping claw cylinder (145) to fix the fixed housing (1) in the positioning tool (121); The adjusting inner conductor component picking mechanism (15) comprises an adjusting inner conductor component picking clamp (151) and an adjusting inner conductor component flipping cylinder (152), an adjusting inner conductor component picking lifting cylinder (153), a first transverse cylinder (154) and a second transverse cylinder (155) which are sequentially connected to the clamp; under the action of the adjusting inner conductor component picking lifting cylinder (153), the first transverse cylinder (154) and the second transverse cylinder (155), the adjusting inner conductor component picking clamp (151) is driven to move, thereby picking up the adjusting inner conductor component (100) in the feeding channel of the second feeding device (20); and the adjusting inner conductor component flipping cylinder (152) can flip 180 degrees, so that the adjusting inner conductor component (100) is placed in the correct position above the adjusting screw (10); The adjustable inner conductor assembly assembly mechanism (16) comprises an adjustable inner conductor assembly screwing jaw (161), an adjustable inner conductor assembly screwing motor (162), and an adjustable inner conductor assembly screwing and lifting cylinder (163); under the action of the adjustable inner conductor assembly screwing motor (162), the adjustable inner conductor assembly screwing jaw (161) is driven to screw the adjustable inner conductor assembly (100) into the adjusting screw rod (10), and at the same time, the adjustable inner conductor assembly screwing and lifting cylinder (163) drives the adjustable inner conductor assembly to rotate and move downward; The detection mechanism (18) comprises a detection head (181) and a detection cylinder (182), and the detection head (181) is extended into the interior of the assembled constant impedance radio frequency connector through the detection cylinder (182) for detection.

9. The assembly device of the phase-adjustable constant impedance radio frequency connector according to claim 5, characterized in that: The preforming device (21) comprises a pressing head (211), wherein the pressing head (211) is connected to a preforming cylinder (213) via a pressing rod (212); an inner guide rod body (3), a threaded bushing (4), an elastic contact sleeve (5), an inner bushing (6) and a welding sleeve (7) are placed on a preforming tool (214), and the inner conductor assembly (100) is preassembled and formed under the action of the pressing head (211).

10. A method for using an assembly device for a phase-adjustable constant impedance radio frequency connector, characterized in that: The steps include: Step A: pre-assembly preparation: under the action of the pressing head (211), the inner guide rod body (3), the threaded bushing (4), the elastic contact sleeve (5), the inner bushing (6) and the welding sleeve (7) in the pre-forming tool (214) are pre-assembled to form an adjustable inner conductor assembly (100); Step B: material preparation: placing the fixed housing (1) assembly preassembled in the previous process into the vibration plate of the first feeding device (19) for standby use; at the same time, placing the preassembled adjustable inner conductor components (100) one by one into the vibration plate of the second feeding device (20) for standby use; Step C: Continuous assembly: First, the rotary motor (122) is started to drive the rotary table (12) to rotate intermittently according to the assembly work rhythm; Step C1: At the fixed shell picking station, a fixed shell (1) enters the positioning plate (133) along the feeding channel for positioning, and at the same time, the elastic clamping claw (131) of the fixed shell picking mechanism (13) clamps the fixed shell (1) and, under the action of the pressing cylinder (132), moves downward to the positioning tool (121) of the station; Step C2: At the adjusting screw assembly station, the screw clamp (141) clamps the adjusting screw (10), and under the action of the screw screwing motor (142) and the screw lifting cylinder (143), the adjusting screw (10) is screwed into the fixed housing (1); Step C3: At the adjusting inner conductor component picking station, the adjusting inner conductor component picking clamp (151) clamps the adjusting inner conductor component (100) on the feeding channel of the second feeding device (20), and moves it to the top of the adjusting screw (10) under the action of the adjusting inner conductor component picking lifting cylinder (153), the first transverse cylinder (154) and the second transverse cylinder (155); at the same time, the front and back of the adjusting screw (10) are identified by a camera, and the direction is adjusted by the adjusting inner conductor component flipping cylinder (152), and then placed in the adjusting screw (10); Step C4: at the adjusting inner conductor assembly assembly station, the adjusting inner conductor assembly screwing jaw (161) clamps the adjusting inner conductor assembly (100), and under the action of the adjusting inner conductor assembly screwing motor (162) and the adjusting inner conductor assembly screwing lifting cylinder (163), the adjusting inner conductor assembly (100) is screwed and installed inside the adjusting screw rod (10); Step C5: At the locking screw assembly station, the clamping claws clamp the locking screw (8), and under the action of the screwing motor and the cylinder, screw the locking screw (8) to be installed inside the adjusting inner conductor assembly (100); Step C6: At the inspection station, the inspection head (181) is inserted into the assembled constant impedance RF connector under the action of the inspection cylinder (182) to perform inspection; Step C7: At the unloading station, the constant impedance RF connector that has been tested is unloaded from here; Step D: The seven sets of positioning tools (121) on the rotating workbench (12) correspond to the seven workstations in step C, and the seven sets of positioning tools (121) are cyclically operated in the seven workstations in sequence to achieve continuous assembly of the constant impedance radio frequency connector.

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