Electric resistance welding device with efficient heat conduction function

Abstract

The invention discloses an efficient heat conduction electric resistance welding device, and relates to the technical field of welding processing of an inner conductor and a cable of a radio frequency coaxial connector, the electric resistance welding device mainly comprises an electrode, a conductive block, a positioning block and the like; in the welding device, equipment is manually started, a worker only needs to slide a left positioning block and a right positioning block towards the two sides and then place an inner conductor or a cable into a placing plate, under the action of springs on the two sides, the left positioning block and the right positioning block are reset, the inner conductor or the cable is tightly attached to an electrode, and one-time electric resistance welding machining is completed; the welding quality and consistency requirements are ensured, the production efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of radio frequency coaxial connector welding equipment and can be used in a device for processing the core wire welding joints of radio frequency coaxial connector components. Background Technology

[0002] As electronic equipment in aerospace systems continues to develop towards standardization and modularization, coaxial connectors used in communications, millimeter-wave radar, vehicle-mounted high-speed coaxial cable bundles, satellite communications, and precision testing instruments are showing a trend towards higher frequency, smaller size, higher density, higher consistency, and higher reliability. Coaxial connectors, as a core and critical component for radio frequency (RF) signal transmission, are widely used in key fields such as communications, automotive electronics, aerospace, medical equipment, and precision testing instruments. The soldering quality of their inner conductors, outer conductors, and cables directly affects the product's impedance matching, insertion loss, signal transmission bandwidth, VSWR, and lifespan. Traditional manual soldering of RF coaxial connectors suffers from problems such as low coaxial positioning accuracy, difficulty in precisely controlling heat input, easy damage to the insulating medium, poor solder joint consistency, and weak versatility for replacement, failing to meet the demands of large-scale production of high-frequency, miniaturized, and high-reliability coaxial connectors.

[0003] Based on the above actual needs, we have independently developed a high-efficiency heat conduction resistance welding device. It is a dedicated welding device with precise coaxial positioning, closed-loop temperature control, rapid changeover and strong adaptability, so as to improve the stability of welding quality and production efficiency. Summary of the Invention

[0004] This invention provides a high-efficiency heat conduction resistance welding device to solve problems such as eccentricity, offset, uneven weld points, low pass rate of high-frequency products, and overheating instability during the welding process; and manual welding relies on skill and cannot guarantee coaxiality, thus failing to meet the needs of large-scale production of high-frequency, miniaturized, and high-reliability coaxial connectors.

[0005] To address the aforementioned problems, the present invention provides a high-efficiency heat conduction resistance welding device, employing a high-efficiency heat conduction resistance welding device technical solution.

[0006] The welding device includes a base plate 1, foot 2, stop block 3, left positioning block 4, left conductive block 5, electrode 6, placement plate 7, column 8, right positioning block 9, right conductive block 10, spring 11, guide shaft 12, guide rail slider 13, etc.

[0007] Preferably, the guide rail slider 13 is mounted on the slot and connected to the base plate 1 by screws.

[0008] Preferably, the number of guide rail sliders 13 is 2;

[0009] Preferably, the slot of the stop block 3 is mounted on the base plate 1 and connected to it by screws.

[0010] Preferably, there are two stop blocks 3, which are symmetrically installed on both sides of the base plate 1;

[0011] Preferably, the column 8 is installed in the hole of the base plate 1 and connected to it by bottom screws.

[0012] Preferably, the guide shaft 12 is fixed to the left positioning block 4 and the right positioning block 9 respectively, and the other end is fixed to the stop block 3, with the spring 11 passing through the guide shaft 12.

[0013] Preferably, the slot of the left positioning block 4 is installed on the slider, and the left conductive block 5 is installed inside the left positioning block 4 by screws.

[0014] Preferably, the right positioning block 9 is installed in the slot of the slider, and the right conductive block 10 is installed inside the right positioning block 9 by screws.

[0015] Preferably, the electrode is installed in the 4th hole of the left positioning block and connected to it by a set screw;

[0016] Preferably, the electrode is installed in the hole 9 of the right positioning block and connected to it by a set screw;

[0017] The beneficial effects of this invention are as follows: Compared with the prior art, this invention provides a resistance welding device with high-efficiency heat conduction, which has the following advantages:

[0018] In this invention, a liftable placement plate is installed on the column. The welding position at different heights can be adjusted by the slots and screws on the placement plate, so that it can be quickly clamped when changing shapes.

[0019] In this invention, the front ends of the left and right guide blocks have protruding structures, which can quickly open and close the clamping position when clamping the product. After clamping is completed, the spring drives the guide rail slider to reset, ensuring the stability of the product contact after clamping.

[0020] In this invention, the left limiting block and the right limiting block are respectively fixed to the sliders on both sides of the guide rail, thereby reducing the electrode eccentricity error during the sliding process; By adopting a non-metallic insulating design for the left and right guide blocks, physical isolation between the conductor and heat dissipation and the operator is achieved, overcoming problems such as easy burns during traditional manual welding and enhancing safety during use.

[0021] The left and right conductive blocks of this invention use conductive materials as the base material and adopt a fin design, while adding a U-shaped groove air duct to solve the heat dissipation of the module.

[0022] The left conductive block of the present invention has an external thread design at the front end and a positioning slot at the rear end. An external cable is connected to the external thread at the front end, and the electrode is installed in the hole at the rear end and connected by a set screw.

[0023] The right conductive block of the present invention has an external thread design at the rear end and a positioning slot hole at the front end. An external cable is connected to the external thread at the rear end, and the electrode is installed in the front end hole and connected by a set screw.

[0024] The device of this invention has a simple structure, is easy to operate, and is applicable to inner conductors and cables of different diameters and types. It has strong versatility and adaptability, and can meet diverse welding needs. Attached Figure Description

[0025] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. In the drawings, embodiments of the invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein: Figure 1 This is a schematic diagram of the overall structure of a high-efficiency heat conduction resistance welding device according to the present invention; Figure 2 This is a schematic front view of a high-efficiency heat conduction resistance welding device according to the present invention. Figure 3 This is a top view schematic diagram of a high-efficiency heat conduction resistance welding device according to the present invention. Figure 4 for Figure 1 A half-section diagram of the overall structure. Explanation of reference numerals in the attached figures: 1. Base plate; 2. Foot; 3. Stop block; 4. Left positioning block; 5. Left conductive block; 6. Electrode; 7. Placement plate; 8. Column; 9. Right positioning block; 10. Right conductive block; 11. Spring; 12. Guide shaft; 13. Guide rail slider. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1 to 4As shown, the present invention provides a high-efficiency heat conduction resistance welding device, comprising a base plate 1, foot 2, stop block 3, left positioning block 4, left conductive block 5, electrode 6, placement plate 7, column 8, right positioning block 9, right conductive block 10, spring 11, guide shaft 12, and guide rail slider 13. The guide rail slider 13 is mounted on the base plate 1 and symmetrically distributed on both sides. The other end of the base plate 1 is connected to the stop block 3, and the stop block 3 is fixed to the other end of the base plate 1. The stop block 3 is symmetrically distributed on the base plate 1. The column 8 is installed in the positioning slot of the base plate 1 and connected to it by screws. The other end of the column 8 is connected to the placement plate 7. The rear part of the placement plate 7 is mounted on the column 8 through the inner hole of the slot, and the placement plate 7 is fixed to the column 8 by screws.

[0028] The left positioning block 4 is installed on the guide rail slider 13 through a slot. The lower end of the left positioning block 4 is designed with a guide hole. A guide shaft 12 is installed in the guide hole of the left positioning block 4. One end of the guide shaft 12 is fixed in the guide hole of the left positioning block 4, and the other end passes through the inner hole of the stop block 3 and passes through the spring 11. The upper end of the left positioning block 4 is designed with a slot. The left conductive block 5 is fixed in the slot with a screw. The electrode 6 passes through the hole of the left conductive block 5. The upper right end of the left positioning block 4 has a protruding part to physically isolate the conductor from the heat source. The lower front end of the left positioning block 4 has a protrusion to facilitate easy sliding.

[0029] The right positioning block 9 is installed on the guide rail slider 13 through a slot. The lower end of the right positioning block 9 is designed with a guide hole, and a guide shaft 12 is installed in the guide hole of the right positioning block 9. One end of the guide shaft 12 is fixed in the guide hole of the right positioning block 9, and the other end passes through the inner hole of the stop block 3 and passes through the spring 11. The upper end of the right positioning block 9 is designed with a slot, and the right conductive block 10 is fixed in the slot with screws. The electrode 6 passes through the hole of the right conductive block 10. The upper right end of the right positioning block 9 has a protruding part to physically isolate the conductor from the heat source. The lower front end of the right positioning block 9 has a protrusion so that the electrode can slide under the drive of the guide rail.

[0030] Furthermore, the left and right conductive blocks are made of conductive material and employ a fin structure;

[0031] Furthermore, the left conductive block, the right conductive block, the left positioning block, and the right positioning block are assembled structures with internal air ducts to provide both heat dissipation and protection.

[0032] Furthermore, the left and right positioning blocks are made of non-metallic materials;

[0033] Furthermore, the mechanism has a mirror-like structure on the left and right sides, which can be adjusted according to the different diameters of the inner conductor and cable;

[0034] Furthermore, springs are installed on the left and right positioning blocks of the mechanism, and the action of the springs ensures good contact between the electrode and the product during the welding process;

[0035] Furthermore, the guide rail slider is installed in the positioning groove to ensure the consistency of electrode coaxiality after assembly;

[0036] Furthermore, the mechanism placement plate is mounted on the column and can be freely adjusted according to the welding height of the inner conductor and cable.

[0037] The present invention provides a high-efficiency heat conduction resistance welding device comprising a base plate 1, a foot 2, a stop block 3, a left positioning block 4, a left conductive block 5, an electrode 6, a placement plate 7, a column 8, a right positioning block 9, a right conductive block 10, a spring 11, a guide shaft 12, and a guide rail slider 13. The working process of a high-efficiency heat conduction resistance welding device mainly consists of the following four steps: Step 1: Manually adjust the placement plate to the appropriate height according to the type of inner conductor and cable, and then check that the wiring and equipment on both sides are correct; Step 2: Manually press the power switch to start the equipment. Manually move the left and right positioning blocks to both sides, then place the cable on the placement plate. Under the action of the spring, the electrode retracts to the middle, and the electrode and cable are clamped together. Step 3: Manually place the solder wire on the cable welding area. The welding is complete when the solder wire contacts the inner conductor end face. Step 4: Manually remove the welded inner conductor and cable, check the welding quality, and then turn off the power switch. The welding is now complete in one operation.

[0038] The present invention features a simple and reasonable structural design with good practicality. For example, the designed electrode assembly controls the extension length of the electrode through an assembly mechanism between the electrode and the left conductive block; it is compatible with products of different diameters and widths, simple to operate, and convenient to use. For the assembly between the guide rail slider, the centering mechanism, and the placement plate assembly, positioning grooves and stop forms are used in multiple places to avoid problems such as electrode coaxiality deviation caused by electrode wobbling during clamping or welding, which could lead to weld point offset.

[0039] This invention can meet the welding requirements of different models and specifications. Springs are installed on both sides of the welding device, passing through guides to achieve an elastic buffer structure. This invention can also be adapted to different shielding layer structures (braided shielding, aluminum foil shielding) to avoid damage to the inner conductor and cable due to excessive clamping force. Furthermore, it significantly reduces debugging time during product changeovers for various connector models such as SMA, SSMA, and SMP, as well as semi-steel and semi-flexible cables, balancing the needs of both small-batch and large-scale mass production. This invention effectively meets the usage requirements.

Claims

1. A high-efficiency heat conduction resistance welding device, comprising a base plate (1), characterized in that, The base plate (1) has feet (2) at the bottom and threaded holes on the base plate (1). The feet (2) are connected to the base plate (1) by screws.

2. The high-efficiency heat conduction resistance welding device according to claim 1, characterized in that, The upper left side of the base plate (1) has a positioning groove; the guide rail slider (13) is connected to the base plate (1) with screws along the groove.

3. The high-efficiency heat conduction resistance welding device according to claim 1, characterized in that, The upper right side of the base plate (1) has a positioning groove; the guide rail slider (13) is connected to the base plate (1) with screws along the groove.

4. The high-efficiency heat conduction resistance welding device according to claim 1, characterized in that, A stop block (3) is installed on the left side of the base plate (1); the internal groove of the stop block (3) is connected to the left end face of the base plate (1); a stop block (3) is installed on the right side of the base plate (1); the internal groove of the stop block (3) is connected to the right end face of the base plate (1), and the stop blocks (3) are symmetrically distributed on the left and right sides of the base plate (1). The characteristic is that the number of the stop blocks (3) is 2.

5. The high-efficiency heat conduction resistance welding device according to claim 1, characterized in that, The base plate (1) has a positioning hole on the back, and a column (8) is installed thereon; the outer circle of the column (8) is positioned in the positioning hole of the base plate (1); the column (8) is fixed to the base plate (1) by screws.

6. The high-efficiency heat conduction resistance welding apparatus according to claim 1, characterized in that, The column (8) is positioned at the rear of the positioning hole and a column (8) is installed thereon; the outer circle of the column (8) is positioned in the positioning hole of the base plate (1); the column (8) is fixed to the base plate (1) by screws; a placement plate (7) is installed on the upper part of the column (8), the placement plate (7) is installed on the column (8) through the positioning hole, and a locking nut is provided at the rear end of the placement plate (7).

7. The high-efficiency heat conduction resistance welding device according to claim 3, characterized in that, A left positioning block (4) is installed on the upper part of the left guide rail slider (13); a guide hole is provided on the lower part of the left positioning block (4); the guide shaft (12) is installed in the positioning block, and the other end of the guide shaft (12) is fixed to the stop block (3) by a screw; the spring (11) passes through the outer circle of the guide shaft (12), and one end of the spring (11) stops at the left positioning block (4), and the other end stops at the stop block (3); the left conductive block (5) is installed on the inner hole of the left positioning block (4) and connected to it by a locking screw; the right end face of the left conductive block (5) has a positioning hole; the electrode (6) is fixed in the positioning hole of the left conductive block (5) by a screw; the left conductive block (5) adopts a fin structure design.

8. The high-efficiency heat conduction resistance welding device according to claim 3, characterized in that, The upper part of the right guide rail slider (13) is equipped with a right positioning block (9); the lower part of the right positioning block (9) is provided with a guide hole; the guide shaft (12) is installed in the positioning block, and the other end of the guide shaft (12) is fixed to the stop block (3) by a screw. The spring (11) passes through the outer circle of the guide shaft (12), and one end of the spring (11) stops at the right positioning block (9), and the other end stops at the stop block (3). The right conductive block (10) is installed on the inner hole of the right positioning block (9) and connected to it by a locking screw. The left end face of the right conductive block (10) has a positioning hole, and the electrode (6) is fixed in the positioning hole of the right conductive block (10) by a screw. The right conductive block (10) adopts a fin structure design.

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