A radio frequency connector joint assembly tool

Abstract

The application discloses a radio frequency connector joint assembling tool, which comprises a rack composed of a base, a stand and a cantilever, a cylinder vertically arranged on the cantilever with a piston downward, a die holder device connected with the piston, the die holder device being provided with a pressing head capable of descending with the piston, a workpiece positioning seat arranged on the base of the rack and corresponding to the pressing head of the die holder device and used for placing workpieces needing to be assembled, and an electric control box used for automatically controlling the assembling process. The die holder device further comprises a pressing head initial height adjusting mechanism used for adjusting the pressing depth of two workpiece assemblies and meeting design requirements, a pressing head guiding mechanism used for restricting the downward movement track of the pressing head and keeping the pressing head in a vertical state at all times, and a pressing head downward limiting mechanism used for limiting the lowest height of the downward movement of the pressing head and avoiding damage to the workpieces. The tool greatly improves the assembling efficiency and stability.

Description

Technical Field

[0001] This invention relates to radio frequency connectors, and more particularly to assembly fixtures for such radio frequency connectors. Background Technology

[0002] RF connectors mainly consist of an outer conductor, an insulator, an inner conductor, and a contact head, such as... Figure 1 As shown, the above components need to be assembled together during the production process. The pressing force during assembly varies from tens of N to thousands of N depending on the product. If we use a regular manual press for assembly, on the one hand, the labor intensity of manual operation is high, and on the other hand, manual operation cannot guarantee the stability of the pressing dimensions. Therefore, it is necessary to design a semi-automatic pneumatic assembly fixture to meet the above requirements. Summary of the Invention

[0003] This invention addresses the problems encountered when assembling RF connectors using conventional manual presses by designing an RF connector assembly fixture. This fixture significantly improves assembly efficiency and stability.

[0004] The technical solution of this invention is: A radio frequency connector assembly fixture, characterized in that the fixture comprises: - The frame consists of a base, columns, and cantilever; - A cylinder, vertically arranged on a cantilever, with its piston pointing downwards; - A mold frame assembly connected to a piston, the mold frame assembly having a pressure head that moves downward with the piston; - The workpiece positioning seat is arranged on the machine frame base and corresponds to the pressure head of the mold frame device. It is used to place the workpiece to be assembled. - The electrical control box is used to automatically control the assembly process.

[0005] The mold frame device has an upper mold plate, a lower mold plate, and a base plate, and the mold frame device further includes: - The initial height adjustment mechanism for the pressure head is used to adjust the pressing depth of the two workpieces to meet the design requirements; - The pressure head guide mechanism is used to constrain the downward movement trajectory of the pressure head, ensuring that it remains vertical at all times; - The pressure head downward limit mechanism is used to limit the minimum height of the pressure head downward to prevent damage to the workpiece.

[0006] The initial height adjustment mechanism for the pressure head includes an adjustment block with a stepped thickness, which is arranged between the upper template and the pressure head of the mold frame device. By selecting adjustment block steps of different thicknesses to place between the upper template and the pressure head, the initial height of the pressure head can be changed. Each step of the adjustment block is provided with a positioning hole, and the upper template is provided with a positioning pin. When the adjustment block step is selected, the positioning pin is inserted into the positioning hole of that step to position the adjustment block.

[0007] The pressure head guiding mechanism includes a pair of guide columns, which are vertically arranged on the lower template. The guide columns are equipped with guide sleeves, which are fixedly connected to the upper template of the mold frame device.

[0008] The pressure head downward limiting mechanism is a column with a certain height, arranged on the lower template. When the pad of the mold frame device is placed on the top surface of the column, the minimum height of the pressure head is limited.

[0009] The tooling is also equipped with a safety protection device, which further includes: - The guardrail is located on the base of the frame and has three guardrails on the left, right and rear sides; - The safety light curtain, in conjunction with the aforementioned guardrail, serves as the front panel of the guardrail. When a worker's hand operates inside the guardrail, the detection signal of the safety light curtain acts as a cut-off signal for the cylinder control circuit, preventing the cylinder from starting. - The cylinder control circuit has two start buttons, set according to "AND" logic. The two buttons are far apart, and it is impossible for an operator to press both buttons at the same time with one hand. Both buttons must be pressed to start the cylinder.

[0010] The control circuit of the electrical control box adopts a PLC control circuit.

[0011] The beneficial effects of this invention are as follows: The tooling uses a cylinder as its power source and is designed as a mold frame. Through time relays and PLC control, it achieves semi-automatic operation, making assembly more stable. The adjustment block is designed with multiple steps, allowing for precise fine-tuning of assembly dimensions by moving left and right; each step differs by 0.02mm. It employs a quick-change upper mold pressure head and workpiece positioning seat (i.e., product fixing seat), meaning that different workpieces (i.e., products) only require changing the positioning seat and pressure head, ensuring strong compatibility. The use of two-hand operation and program control combined with safety light curtain protection enhances operational safety. This significantly improves assembly efficiency and stability.

[0012] The following is a detailed explanation with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the parts and assembly structure of an RF connector.

[0014] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 3 This is a schematic diagram of the frame structure of the present invention.

[0016] Figure 4 This is a schematic diagram of the safety protection device of the present invention.

[0017] Figure 5 This is a schematic diagram of the structure of the mold frame device of the present invention.

[0018] Figure 6 This is a schematic diagram of the adjustment block of the present invention.

[0019] Figure 7-1 yes Figure 5 A schematic diagram of its cross-section.

[0020] Figure 7-2 yes Figure 5 A schematic diagram of its longitudinal section.

[0021] The symbols in the diagram have the following meanings: 1—Frame; 2—Safety protection device; 3—Mold frame device; 101—Frame base; 102—Column; 103—Cantilever; 104—Cylinder; 105—Electrical control box; 106—Counter; 107—Time relay; 108—Delay switch; 109—Power switch; 201—Guardrail; 202—Safety light curtain; 203—Button box; 204—Start button; 301—Lower template; 302—Limit post; 303—Guide post; 304—Guide sleeve; 305—Adjusting block pad; 306—Adjusting block; 307—Upper template; 308—Connector fixing block; 309—Cylinder connector; 310—Positioning pin; 311—Top block; 312—Tightening screw; 313—Pad; 314—Pressure head; 315—Workpiece positioning seat. Detailed Implementation

[0022] As one embodiment of the present invention, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 7-1 , Figure 7-2 As shown.

[0023] This RF connector assembly fixture (see...) Figure 2 The system includes a frame 1, a safety protection device 2, and a mold frame device 3. The frame 1 (see...) Figure 3The assembly includes a frame base 101, a column 102, and a cantilever 103. The frame 1 has a cylinder 104 and an electrical control box 105. The electrical control box 105 externally houses a counter 106, a time relay 107, a delay switch 108, and a power switch 109. The column 102 is fixed to the frame base 101 and connected to the cantilever 103. The cylinder 104 is fixed to the cantilever 103, providing the necessary pressing force for assembly. The electrical control box 105 internally houses PLC and other control components, primarily controlling the tooling's starting pressure, pressure holding delay, and safety light curtain protection to prevent personnel injury. The counter 106 is used for production quantity statistics. The time relay 107 is used to design a pressure holding delay after the cylinder 104 presses down to ensure more stable assembly dimensions. The delay switch 108 can switch the pressure holding delay according to different workpiece assembly needs. The power switch 109 is the main power switch for the tooling. The safety protection device 2 (see...) Figure 4 The fixture includes a guardrail 201, a safety light curtain 202, a button box 203, and a start button 204. The guardrail 201 protects the area around the mold frame to prevent other personnel from reaching in and causing injury during operation. The safety light curtain 202 protects the operator; when the operator picks up or places a workpiece, the safety light curtain 202 senses the signal and sends it to the PLC, preventing the cylinder 104 from operating and thus preventing injury to the operator. Two start buttons 204 are installed on the button box 203, requiring the operator to use both hands to start the fixture, making operation safer. The mold frame device 3 (see...) Figure 5 and Figure 7-1 , Figure 7-2 The assembly includes a lower template 301, a limiting post 302, a guide post 303, a guide sleeve 304, an adjusting block pad 305, an adjusting block 306, an upper template 307, a connector fixing block 308, a cylinder connector 309, a positioning pin 310, a top block 311, a tightening screw 312, and a pad 313. The lower template 301 and the upper template 307 are connected by the guide post 303 and the guide sleeve 304 and can slide up and down. The limiting post 302 is fixed on the lower template 301 to limit the downward stroke to control the assembly dimensions. The adjusting block pad 305 supports the adjusting block 306. The adjusting block 306 is designed with multiple steps, each step differing by 0.02mm, and each step is designed with a positioning hole for quick positioning. It can move left and right to achieve precise fine-tuning of the assembly dimensions (see [reference]). Figure 6The cylinder connector 309 is fixed to the piston rod of the cylinder 104 via the connector fixing block 308. The positioning pin 310 is used for quick adjustment of the position of the adjusting block 306. The tightening screw 312 and the top block 311 are fitted together and fixed on the pad 313 to tighten and fix the workpiece pressure head 314. The pad 313 is fixed on the upper template 307 and contacts the limiting post 302 to limit the stroke, and also to fix the workpiece pressure head 314. The workpiece positioning seat 315 is fixed on the lower template 301. Different workpiece pressure heads 314 and workpiece positioning seats 315 are designed for different workpieces, achieving flexible production and strong versatility.

[0024] The operation process of this invention is as follows: Loosen the tightening screw 312 and the top block 311, install the workpiece pressure head 314 corresponding to the workpiece onto the pad 313, tighten the tightening screw 312, so that the inclined surface at the front end of the top block 311 cooperates with the inclined surface of the workpiece pressure head 314 to generate an upward force, thereby making the workpiece pressure head 314 press against the adjusting block 306. Fix the workpiece positioning seat 315 corresponding to the workpiece onto the lower template 301, turn on the power switch 109, and set the time relay delay pressure holding time according to the assembly needs of different workpieces. After the above is completed, production assembly can be carried out. Place the workpiece on the workpiece positioning seat 315 and press the start button 204 with both hands. The cylinder 104 moves to move the upper template 307 down to press the workpiece in. When the pressure holding time is up, the cylinder 104 automatically resets to complete the assembly. The operator takes out the workpiece for the next assembly.

[0025] The adjustment process for adjusting block 306 is as follows: When the assembly dimensions do not meet the workpiece requirements due to factors such as incoming material dimensions or insulator expansion and rebound, fine adjustments are required. The adjustment method is to first loosen the tightening screw 312, then pull the locating pin 310 upwards. Moving adjusting block 306 to the left reduces the assembly pressing depth by 0.02mm for each position. Moving adjusting block 306 to the right increases the assembly pressing depth by 0.02mm for each position. After adjusting to the correct position, insert the locating pin 310 into the locating hole of adjusting block 306, and finally tighten the tightening screw 312.

[0026] The above embodiments are for illustrative purposes only and do not limit the invention. It is not difficult to see from the principle and structure of the invention that this tooling is mainly used for workpiece pressing assembly. Different press heads and workpiece positioning seats can be designed according to different workpiece sizes and assembly requirements. Multiple parts can also be assembled at the same time.

Claims

1. A radio frequency connector assembly fixture, characterized in that, The assembly fixture is used to assemble the outer conductor, insulator, inner conductor, and contact of the RF connector into a single unit. The assembly fixture includes: - The frame consists of a base, columns, and cantilever; - A cylinder, vertically arranged on the cantilever, with the piston of the cylinder facing downwards; - Electrical control box, used for automatic control of the assembly process; - The mold frame assembly includes a lower mold plate, guide pillars, an upper mold plate, a backing plate, adjusting blocks, positioning pins, and limiting pillars; wherein: --The workpiece positioning seat corresponding to the workpiece is fixed on the lower template and corresponds to the workpiece pressure head, and is used to place the workpiece to be assembled; --Guide columns are vertically arranged on the lower template. The guide columns are equipped with guide sleeves, which are fixedly connected to the upper template. The upper template is connected to the cylinder piston rod through a cylinder connector and can move downwards towards the lower template with the piston of the cylinder, so that the lower template and the upper template can slide up and down through the connection of the guide columns and guide sleeves. --The pad is fixed on the upper template and is used to fix the workpiece pressure head. The pad is fixed with a tightening screw and a top block for tightening the workpiece pressure head. The workpiece pressure head corresponding to the workpiece is installed on the pad and the tightening screw is locked. The inclined surface at the front end of the top block cooperates with the inclined surface of the workpiece pressure head to generate an upward force, thereby making the workpiece pressure head and the adjusting block tighten together. --The adjusting block is arranged between the upper template and the workpiece pressure head. The thickness of the adjusting block varies in steps. By moving the position of the adjusting block left and right between the upper template and the workpiece pressure head, the thickness of the adjusting block at the workpiece pressure head changes. The initial height of the workpiece pressure head can be changed by precisely adjusting the assembly dimensions. Each step of the adjusting block is provided with a positioning hole for quick positioning. --The positioning pin is used to quickly adjust the position of the adjustment block. The positioning pin is set on the upper template. When the adjustment block step is selected, the positioning pin is inserted into the positioning hole of the step to position the adjustment block. --The limiting post has a defined height and is arranged on the lower template. When the pad fixed on the upper template is placed on the top surface of the limiting post, the minimum height of the workpiece pressure head is limited. The limiting post is used to limit the minimum height of the workpiece pressure head downward and limit the downward stroke to control the assembly size and avoid damaging the workpiece. The mold frame device can adjust the pressing depth of the workpiece assembly for the RF connector connector during the pressing and assembly process to meet design requirements.

2. The RF connector assembly fixture as described in claim 1, characterized in that, The tooling is also equipped with a safety protection device, which further includes: - The guardrail is located on the base of the frame and has three guardrails on the left, right and rear sides; - The safety light curtain, in conjunction with the aforementioned guardrail, serves as the front panel of the guardrail. When a worker's hand operates inside the guardrail, the detection signal of the safety light curtain acts as a cut-off signal for the cylinder control circuit, preventing the cylinder from starting. - The cylinder control circuit has two start buttons, set according to "AND" logic. The two buttons are far apart, and it is impossible for an operator to press both buttons at the same time with one hand. Both buttons must be pressed to start the cylinder.

3. The RF connector assembly fixture as described in claim 1, characterized in that, The control circuit of the electrical control box adopts a PLC control circuit.

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