High-precision positioning antenna communication device and preparation method of positioning antenna

Abstract

The present disclosure provides a high-precision positioning antenna communication device and a preparation method of the positioning antenna, comprising a gantry mechanism, a lifting mechanism, a welding mechanism and a mounting jig. The lifting mechanism is slidingly arranged on the gantry mechanism. The welding mechanism is connected to the lifting mechanism. The welding mechanism is arranged above the mounting jig. The lifting mechanism is used to control the welding mechanism to perform high-frequency micro-amplitude jitter. The mounting jig is provided with a mounting groove and a negative pressure channel. A negative pressure groove is formed between the bottoms of the mounting groove. The negative pressure channel is communicated with the negative pressure groove and connected with an external negative pressure source. The negative pressure groove is used to apply a negative pressure attraction force during welding. The lifting mechanism drives the welding mechanism to perform high-frequency micro-amplitude jitter, so that the molten solder can fully fill the through hole. The negative pressure groove provides a negative pressure attraction force in the direction of the through hole, which increases the filling speed of the molten solder in the through hole, and realizes high-precision and high-reliability welding effect of the positioning antenna.

Description

Technical Field

[0001] This disclosure relates to the technical field of antenna fabrication, and in particular to a high-precision positioning antenna communication device and a method for preparing a positioning antenna. Background Technology

[0002] With the rapid development of wireless communication technology, the demand for high-frequency, highly integrated antennas has surged, posing a severe challenge to the design and manufacturing process of multilayer positioning antenna boards. To meet the requirements of signal integrity, miniaturization, and lightweighting, the multilayer positioning antenna board uses miniature vias filled with solder to achieve interlayer circuit connectivity.

[0003] However, the structure of the micro-via places extremely high demands on the welding process. Due to the thickness of the multilayer board of the positioning antenna, when the diameter of the via is small, the depth-to-diameter ratio of the via is large. During welding, it is difficult for the solder to fully fill the via, which can easily form voids or bubbles, making welding more difficult and prone to causing poor soldering of the via.

[0004] For example, the prior art document CN202111240304.1 discloses a soldering device for the connector wire ends of an SMA antenna connector. This solution involves straightening the solder wire after it is pulled out, and then melting it by heating. The molten solder adheres accurately to the joint between the pin and the inner wire. However, this solution cannot solve the problem of insufficient solder filling of the vias in the multilayer board of the positioning antenna when the depth-to-diameter ratio is large, making soldering more difficult and prone to causing cold solder joints in the vias. Summary of the Invention

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and to provide a high-precision positioning antenna connection device and a method for preparing the positioning antenna that fully fills the through-hole and achieves reliable electrical connection through the through-hole.

[0006] The purpose of this disclosure is achieved through the following technical solution:

[0007] A high-precision positioning antenna connection device includes a gantry mechanism, a lifting mechanism, a welding mechanism, and an installation fixture. The lifting mechanism is slidably disposed on the gantry mechanism, the welding mechanism is connected to the lifting mechanism, and the welding mechanism is disposed above the installation fixture. The heating end of the welding mechanism is used to heat and melt solder. The solder mechanism has an installation through hole for installing a solder delivery pipe. The lifting mechanism is used to control the welding mechanism to perform high-frequency micro-amplitude vibration to accelerate the wetting of the through hole of the positioning antenna by the molten solder.

[0008] The mounting fixture has a mounting groove and a negative pressure channel. The mounting groove is used to mount the positioning antenna. A negative pressure groove is formed between the bottoms of the mounting groove. The negative pressure channel is connected to the negative pressure groove and is connected to an external negative pressure source. The negative pressure groove is used to apply negative pressure attraction during the welding process to guide the molten solder through the through hole of the positioning antenna.

[0009] In one embodiment, the welding mechanism includes a welding column, a connecting frame assembly, and a multi-directional solder rack assembly. The connecting frame assembly is fixed to the lifting end of the lifting mechanism, the welding column is fixed to the connecting frame assembly, and the multi-directional solder rack assembly is fixed to the connecting frame assembly. The multi-directional solder rack assembly is disposed on one side of the welding column and is used to install a solder delivery pipe.

[0010] In one embodiment, the connecting frame assembly includes a connecting plate, an elastic element, and a movable plate. The connecting plate is mounted on the lifting mechanism, the movable plate is slidably disposed on the connecting plate, the two ends of the elastic element elastically abut against the movable plate and the connecting plate respectively, and the welding column is fixed to the movable plate.

[0011] In one embodiment, the connecting frame assembly further includes an arc-shaped adjusting member with an arc-shaped groove. One end of the lifting mechanism is slidably disposed within the arc-shaped groove, and the other end of the connecting plate is slidably disposed within the arc-shaped groove.

[0012] In one embodiment, the mounting fixture includes a fixture body and a fixture cover plate. The mounting groove and the negative pressure channel are formed in the fixture body. The fixture cover plate covers the fixture body and is hinged to the fixture body. The fixture cover plate has a welding through hole.

[0013] In one embodiment, the fixture body is provided with a wire block, and the fixture body is also provided with an embedding groove. The wire block is detachably installed in the embedding groove, and the wire block is provided with a wire groove.

[0014] In one embodiment, the lifting mechanism includes a lifting component and a driving component. The lifting component includes a sliding base, a lifting guide rail, and a lifting column. The sliding base is slidably disposed on the gantry mechanism. The lifting guide rail is disposed vertically on the sliding base. The lifting column is slidably disposed on the lifting guide rail. The driving component is fixed to the gantry mechanism and is used to drive the lifting column to perform reciprocating motion.

[0015] In one embodiment, the drive assembly includes a drive roller, a driven roller, a conveyor belt, and a drive motor. The drive roller and the driven roller are respectively disposed on both sides of the lifting guide rail. The conveyor belt is sleeved on the drive roller and the driven roller. The lifting column is connected to the conveyor belt. The drive motor is used to drive the conveyor belt to perform reciprocating motion.

[0016] In one embodiment, the high-precision positioning antenna connection device further includes a fixture guide rail mechanism, which includes a guide rail assembly and a fixture base. The mounting fixture is fixed to the fixture base, and the guide rail assembly is used to control the reciprocating motion of the fixture base.

[0017] A method for fabricating a positioning antenna, using the high-precision positioning antenna communication device described in any of the above embodiments, the method comprising the following steps:

[0018] Obtain the positioning antenna for the through hole to be connected;

[0019] The positioning antenna is installed in the mounting slot. An external negative pressure source is activated, and the negative pressure generated by the negative pressure slot is used to move the positioning antenna to the bottom of the welding mechanism through the mounting fixture.

[0020] The lifting mechanism controls the welding mechanism to descend, the heating end of the welding mechanism is close to the positioning antenna, and the solder delivery pipe sends solder to the heating end of the welding mechanism for heat melting.

[0021] During the hot melting process, the lifting mechanism shakes the welding mechanism to accelerate the wetting of the through hole by the hot melted solder. The negative pressure groove of the mounting fixture maintains the negative pressure attraction, and the negative pressure groove attraction guides the hot melted solder to fill the through hole.

[0022] The lifting mechanism controls the welding mechanism to move away from the positioning antenna, thereby obtaining a positioning antenna that connects to the through hole.

[0023] Compared with the prior art, this disclosure has at least the following advantages:

[0024] The aforementioned high-precision positioning antenna connection device uses a lifting mechanism to drive the welding mechanism to perform high-frequency micro-amplitude vibration, which intensifies the movement of molten solder molecules and enhances their fluidity. This allows the molten solder to quickly and thoroughly wet the via, ensuring that the via is fully filled and preventing issues such as air bubbles or incomplete soldering. The negative pressure groove provides a directional negative pressure attraction to the via, ensuring the molten solder fills the entire via in a directional manner, effectively eliminating gas and accelerating the filling process. The combined vibration and negative pressure welding accelerates the filling speed of the molten solder within the via, solving the problem of filling vias with large diameters and ensuring reliable electrical connection of the wiring on both sides of the positioning antenna through the via. This achieves a high-precision and high-reliability welding effect for the positioning antenna. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a high-precision positioning antenna connection device according to an embodiment;

[0027] Figure 2 for Figure 1 The diagram shows the structure of the mounting fixture.

[0028] Figure 3 for Figure 2 A cross-sectional view of the mounting fixture;

[0029] Figure 4 for Figure 1 The diagram shows the structure of the welding mechanism.

[0030] Figure 5 for Figure 1 A partial structural schematic diagram of the high-precision positioning antenna connection device is shown.

[0031] Figure 6 This is a flowchart illustrating the steps of a method for fabricating a positioning antenna according to one embodiment. Detailed Implementation

[0032] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] This application provides a high-precision positioning antenna connection device, which includes a gantry mechanism, a lifting mechanism, a welding mechanism, and a mounting fixture. The lifting mechanism is slidably disposed on the gantry mechanism, and the welding mechanism is connected to the lifting mechanism and disposed above the mounting fixture. The heating end of the welding mechanism is used to heat molten solder. The solder mechanism has a mounting through hole for mounting a solder delivery pipe. The lifting mechanism is used to control the welding mechanism to perform high-frequency micro-amplitude vibration to accelerate the wetting of the molten solder into the through hole of the positioning antenna. The mounting fixture has a mounting groove and a negative pressure channel. The mounting groove is used to mount the positioning antenna, and a negative pressure groove is formed between the positioning antenna and the bottom of the mounting groove. The negative pressure channel is connected to the negative pressure groove and is connected to an external negative pressure source. The negative pressure groove is used to apply negative pressure attraction during the welding process to guide the molten solder through the through hole of the positioning antenna.

[0036] The aforementioned high-precision positioning antenna connection device uses a lifting mechanism to drive the welding mechanism to perform high-frequency micro-amplitude vibration, which intensifies the movement of molten solder molecules and enhances their fluidity. This allows the molten solder to quickly and thoroughly wet the via, ensuring that the via is fully filled and preventing issues such as air bubbles or incomplete soldering. During the welding process, the negative pressure groove provides a directional negative pressure attraction to the via, causing the molten solder to fill the entire via in a directional manner. This effectively removes gas from the via and accelerates the filling process. The combined vibration and negative pressure welding accelerates the filling speed of the molten solder in the via, solving the problem of filling vias with large diameters. This ensures reliable electrical connection of the wiring on both sides of the positioning antenna through the via, achieving a high-precision and high-reliability welding effect for the positioning antenna.

[0037] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0038] Please see Figures 1 to 4 As shown, this is a high-precision positioning antenna connection device 10 according to an embodiment of the present invention. The high-precision positioning antenna connection device 10 includes a gantry mechanism 100, a lifting mechanism 200, a welding mechanism 300, and a mounting fixture 400. The lifting mechanism 200 is slidably disposed on the gantry mechanism 100. The welding mechanism 300 is connected to the lifting mechanism 200 and is disposed above the mounting fixture 400. The heating end of the welding mechanism 300 is used to heat and melt solder. The solder mechanism 300 has a mounting through hole 301 for installing a solder delivery pipe. The lifting mechanism 200 is used to control the welding mechanism 300 to perform high-frequency micro-amplitude jitter to accelerate the wetting of the through hole 201 of the positioning antenna 20.

[0039] Furthermore, the mounting fixture 400 has a mounting groove 401 and a negative pressure channel 402. The mounting groove 401 is used to mount the positioning antenna 20. A negative pressure groove 403 is formed between the positioning antenna 20 and the bottom of the mounting groove 401. The negative pressure channel 402 is connected to the negative pressure groove 403 and is connected to an external negative pressure source. The negative pressure groove 403 is used to apply negative pressure attraction during the welding process to guide the molten solder through the through hole 201 of the positioning antenna 20.

[0040] In this embodiment, solder is transported through a solder delivery pipe, and the welding mechanism 300 heats the solder into molten solder. The lifting mechanism 200 drives the heating end of the welding mechanism 300 to perform high-frequency micro-amplitude vibration in the vertical direction. The positioning antenna 20 substrate to be welded is placed into the mounting groove 401 of the mounting fixture 400. The substrate through-hole 201 is precisely aligned with the negative pressure groove 403. The negative pressure groove 403 continuously adsorbs the molten solder, forming a directional flow path from the surface of the through-hole 201 to the bottom.

[0041] The aforementioned high-precision positioning antenna connection device 10 uses a lifting mechanism 200 to drive a welding mechanism 300 to perform high-frequency micro-amplitude vibration, which intensifies the movement of molten solder molecules and enhances their fluidity. This allows the molten solder to quickly and thoroughly wet the through-hole 201, ensuring that the through-hole 201 is fully filled and preventing air bubbles or incomplete soldering. During the welding process, the negative pressure attraction provided by the negative pressure groove 403 to the through-hole 201 causes the molten solder to fill the entire through-hole 201 in a directional manner, effectively removing gas from the through-hole 201 and accelerating the filling of the through-hole 201. Through the coordinated welding of vibration and negative pressure, the filling speed of the molten solder in the through-hole 201 is increased, solving the problem of solder filling in through-holes with large diameters. This ensures that the lines on both sides of the positioning antenna 20 are reliably electrically connected through the through-hole 201, thereby achieving a high-precision and high-reliability welding effect for the positioning antenna 20.

[0042] like Figure 5 As shown, in one embodiment, the welding mechanism 300 includes a welding column 310, a connecting frame assembly 320, and a multi-directional solder rack assembly 330. The connecting frame assembly 320 is fixed to the lifting end of the lifting mechanism 200. The welding column 310 is fixed to the connecting frame assembly 320, and the multi-directional solder rack assembly 330 is fixed to the connecting frame assembly 320. The multi-directional solder rack assembly 330 is disposed on one side of the welding column 310 and is used to install the solder delivery pipe. In this embodiment, the welding column 310 controls the melting rate of the solder by heating the temperature, and the solder rack is used to adjust the direction of solder delivery. Through the integrated connection of the welding column 310, the solder rack, and the connecting frame, spatial synchronous control of delivery, heating, and vibration is achieved, improving the accuracy and efficiency of connecting and welding the through hole 201.

[0043] like Figure 4 and Figure 5As shown, in one embodiment, the connecting frame assembly 320 includes a connecting plate 321, an elastic element 322, and a movable plate 323. The connecting plate 321 is installed on the lifting mechanism 200, the movable plate 323 is slidably disposed on the connecting plate 321, the two ends of the elastic element 322 elastically abut against the movable plate 323 and the connecting plate 321 respectively, and the welding column 310 is fixed to the movable plate 323. In this embodiment, the connecting plate has a movable groove, and part of the movable plate 323 is movably disposed in the movable groove. The movable plate 323 and the connecting plate 321 are connected by an elastic element 322. The elastic element 322 allows the movable plate 323 to move slightly in the vertical direction, so that the welding column 310 installed on the movable plate 323 can have a certain self-adaptive ability when contacting the workpiece, ensuring the stability and uniformity of the contact. The compression of the elastic element 322 can compensate for the small error of the lifting mechanism 200, ensuring that the welding column 310 makes uniform contact with the workpiece surface, avoiding false welding or over-welding. The elastic buffer may reduce the impact of mechanical vibration on the welding quality. Especially under high-frequency micro-vibration, the elastic element 322 can absorb some vibration energy and maintain the stability of the welding process, thereby significantly improving the reliability and efficiency of micro-hole welding.

[0044] like Figure 4 As shown, in one embodiment, the connecting frame assembly 320 further includes an arc-shaped adjusting member 324, which has an arc-shaped groove 3201. One end of the lifting mechanism 200 is slidably disposed in the arc-shaped groove 3201, and the other end of the connecting plate 321 is slidably disposed in the arc-shaped groove 3201. In this embodiment, the arc-shaped groove 3201 of the arc adjustment component 324 allows the connecting end of the lifting mechanism 200 and the connecting plate 321 to slide along the arc path in the groove. By adjusting the angle of the arc adjustment component, the welding column 310 is made to coincide with the axis of the through hole 201, ensuring that the heating end of the welding component and the through hole 201 maintain a specific optimal contact angle, thereby ensuring that the molten solder flows accurately into the through hole 201, avoiding welding defects caused by angle deviation, and improving welding accuracy and reliability. When different models of positioning antenna 20 are replaced or fixtures 400 are installed, the height or plane angle of the positioning antenna 20 may have slight differences. The angle adjustment provided by the connecting frame assembly 320 improves the adaptability of the high-precision positioning antenna connecting device 10.

[0045] Furthermore, such as Figure 4As shown, in one embodiment, the multi-directional solder rack assembly 330 includes a solder connector 331, an extension rod 332, a first rotary adjustment member 333, a locking connector 334, and a second rotary adjustment member 335. The solder connector 331 is connected to the connecting plate 321. One end of the extension rod 332 is rotatably connected to the solder connector 331. The first rotary adjustment member 333 has a first connecting hole, and the other end of the extension rod 332 is locked to the first connecting hole. One end of the first rotary adjustment member 333 is rotatably connected to the locking connector 334. One end of the second rotary adjustment member 335 is rotatably connected to the locking connector 334. The second rotary adjustment member 335 has a solder mounting through hole 301 for mounting a solder delivery pipe. In this embodiment, the rotation of the extension rod 332 and the solder connector 331 provides the first rotational degree of freedom, which can be used to coarsely adjust the swing angle of the solder tube on the horizontal plane; the extension and locking of the extension rod 332 in the first connecting hole provides the first linear degree of freedom, which can be used to coarsely adjust the extension length of the solder tube; the rotation of the first rotation adjustment member 333 and the locking connector 334 provides the second rotational degree of freedom, which is used to adjust the tilt angle; the rotation of the second rotation adjustment member 335 and the locking connector 334 provides the third rotational degree of freedom, which is used to adjust the axial rotation of the solder tube itself; the insertion, removal and locking of the solder delivery tube in the solder mounting through hole 301 provides the second linear degree of freedom for fine adjustment of the height; with the adjustment capability of at least five degrees of freedom, the operator can accurately position the outlet end of the solder delivery tube to any expected position in three-dimensional space and align the welding point at the optimal angle.

[0046] It is understood that corresponding locking nuts are provided between the solder connector 331 and the extension rod 332, between the extension rod 332 and the first rotary adjustment member 333, between the first rotary adjustment member 333 and the locking connector 334, between the locking connector 334 and the second rotary adjustment member 335, and between the solder delivery pipe and the second rotary adjustment member 335. When each component is adjusted to the preset position, it is fixed and locked by the locking nuts to form a rigid structure, thereby eliminating the risk of position displacement caused by vibration during the welding process and ensuring the stability and reliability of production. The multi-directional solder rack assembly 330 ensures that the solder can be accurately and continuously delivered to the welding area, and works in conjunction with the heat source input of the welding column 310 to improve the precision of the welding guide hole 201.

[0047] Furthermore, such as Figure 4As shown, in one embodiment, the connecting plate 321 has a positioning through hole 3202, the welding column 310 passes through the positioning through hole 3202, and the connecting plate 321 has a plurality of spaced mounting connection holes 3203 along the circumference of the positioning through hole 3202. The solder connector 331 is correspondingly connected to one of the mounting connection holes 3203 to change the position of the solder connector 331. In this embodiment, the positioning via 3202 provides a precise positioning reference for the welding post 310. The welding post 310 first passes through the positioning via 3202, ensuring the perpendicularity of the welding post 310 to the connecting plate 321 and the alignment with the through hole 201 of the positioning antenna 20 below, thereby improving the accuracy of the welding position. Solder delivery requires a smooth path to ensure continuous and stable feeding. By fixing the solder connector 331 to the mounting connection holes 3203 at different circumferential positions, the relative circumferential position of the multi-directional solder rack assembly 330 with respect to the welding post 310 is adjusted, avoiding excessively curved or awkward paths in the solder delivery pipe. This guides the solder to the welding post 310 along a path with less resistance, thereby improving the reliability and consistency of the feeding.

[0048] like Figure 2 and Figure 3 As shown, in one embodiment, the mounting fixture 400 includes a fixture body 410 and a fixture cover plate 420. A mounting groove 401 is formed in the fixture body 410, and both the mounting groove 401 and the negative pressure channel 402 are formed in the fixture body 410. The fixture cover plate 420 covers the fixture body 410 and has a welding through hole 4201. In this embodiment, the positioning antenna 20 is fixedly mounted on the fixture body 410 via the fixture cover plate 420, allowing operators to easily flip the fixture cover plate 420 for quick placement and removal of the positioning antenna 20, thus improving production efficiency. The welding through hole 4201 exposes the welding position with the positioning antenna 20, enabling precise guidance of the welding mechanism 300. The fixture cover plate 420 protects the positioning antenna 20 and prevents flux splashing, avoiding damage to the positioning antenna 20 due to operational deviations.

[0049] Furthermore, in one embodiment, the inner wall of the negative pressure groove 403 is covered with a ceramic layer. In this embodiment, the ceramic layer is made of alumina and is applied to the surface of the negative pressure groove 403 by thermal spraying. The molten solder in the ceramic layer cannot adhere to the ceramic inner wall of the negative pressure groove 403, thus preventing the solder from sticking to the negative pressure groove 403, keeping the negative pressure groove 403 unobstructed, maintaining a stable negative pressure attraction, and preventing the solder from directly contacting the fixture body 410, thereby extending the service life of the fixture body 410.

[0050] Furthermore, the distance between the ceramic layer and the positioning antenna 20 is 0.5mm-2mm. In this embodiment, the distance between the ceramic layer and the positioning antenna 20 is the vertical gap between the ceramic layer on the upper surface of the negative pressure groove 403 and the lower surface of the positioning antenna 20 placed in the mounting groove 401, thus forming an extremely flat and sealed chamber. When the vertical gap is less than 0.5mm, the lower surface of the positioning antenna 20 is too close to the ceramic layer, and the solder is prone to clogging the negative pressure groove 403, resulting in negative pressure failure. When the vertical gap is greater than 2mm, the negative pressure attraction is dispersed, affecting the guiding effect of the solder, and the thickness of the solder at the outlet of the through hole 201 is relatively thick. When the vertical gap is 0.5mm-2mm, the flow of the negative pressure groove 403 is smooth, and the guiding effect of the negative pressure groove 403 on the molten solder of the through hole 201 is good, thus forming a solder joint with uniform and controllable thickness.

[0051] like Figure 2 As shown, in one embodiment, the fixture body 410 is provided with a wire block 411, and the fixture body 410 also has an embedding groove 4101. The wire block 411 is detachably installed in the embedding groove 4101, and the wire block 411 has a wire groove 4102. In this embodiment, the positioning antenna 20 is externally connected to a connecting wire. The connecting wire is precisely positioned, fixed, and guided by the wire groove 4102 to prevent the connecting wire from moving or falling off, thus ensuring the stability and accuracy of the welding process. Different positioning antennas 20 use connecting wires of different diameters, numbers, or interfaces. By replacing the wire blocks 411 with different wire groove 4102 sizes and layouts, the fixture body 410 can be quickly adapted to various products, greatly improving the versatility of the fixture body 410.

[0052] like Figure 5As shown, in one embodiment, the lifting mechanism 200 includes a lifting component 210 and a driving component 220. The lifting component 210 includes a sliding base 211, a lifting guide rail 212, and a lifting column 213. The sliding base 211 is slidably disposed on the gantry mechanism 100. The lifting guide rail 212 is disposed vertically on the sliding base 211. The lifting column 213 is slidably disposed on the lifting guide rail 212. The driving component 220 is fixed to the gantry mechanism 100 and is used to drive the lifting column 213 to perform reciprocating motion. In this embodiment, the sliding base 211 moves on the gantry, positioning the welding mechanism 300 directly above the welding position of the target positioning antenna 20. The drive component 220 is activated, pushing the lifting column 213 downward along the lifting guide rail 212, so that the heating end of the welding column 310 connected to the lifting column 213 contacts the welding position of the positioning antenna 20. During the welding process, the drive component 220 controls the lifting column 213 and the welding column 310 to reciprocate with high frequency and small amplitude. The lifting guide rail 212 ensures the perpendicularity and torsional resistance of the movement direction, avoiding radial shaking during the welding process.

[0053] like Figure 5 As shown, in one embodiment, the drive assembly 220 includes a drive roller 221, a driven roller 222, a conveyor belt 223, and a drive motor 224. The drive roller 221 and the driven roller 222 are respectively disposed on both sides of the lifting guide rail 212. The conveyor belt 223 is sleeved on the drive roller 221 and the driven roller 222. The lifting column 213 is connected to the conveyor belt 223. The drive motor 224 is used to drive the conveyor belt 223 to perform reciprocating motion. In this embodiment, the drive assembly 220 converts rotational motion into linear motion through the conveyor belt 223. The transmission response of the conveyor belt 223 is direct and fast, thereby realizing short-stroke rapid reciprocating motion. By tensioning the conveyor belt 223 through the drive roller 221, the drive motor 224 controls the rotation to precisely convert the minute movement of the lifting column 213, thereby controlling the vibration amplitude of the welding column 310 to achieve high-frequency vibration welding of the through hole 201.

[0054] like Figure 1As shown, in one embodiment, the high-precision positioning antenna connecting device 10 further includes a fixture guide rail mechanism 500. The fixture guide rail mechanism 500 includes a guide rail assembly 510 and a fixture base 520. The mounting fixture 400 is fixed to the fixture base 520, and the guide rail assembly 510 is used to control the reciprocating motion of the fixture base 520. In this embodiment, the fixture base 520 is used to support the mounting fixture 400. Different mounting fixtures 400 can be installed and removed on the fixture base 520. The fixture base 520 is also provided with heat dissipation holes to accelerate the heat dissipation of the mounting fixture 400. The guide rail assembly 510 is provided with a high-precision linear guide rail and a drive system to provide precise guidance and power to the fixture base 520. By controlling the guide rail assembly 510, the fixture base 520 can be driven to perform precise reciprocating motion along the axial direction of the guide rail assembly 510, allowing the positioning antenna 20 to be installed and welded at different positions, thereby realizing assembly line production.

[0055] Furthermore, the high-precision positioning antenna connection device 10 also includes a cooling component and a mounting frame. The cooling component is mounted on the mounting frame, and its air outlet is positioned at the initial top position of the reciprocating motion of the heating end of the heating mechanism. In this embodiment, after the welding mechanism 300 is withdrawn, a small amount of molten solder may remain on its heating end. If the cooling is slow, it will drip due to gravity. The cooling component forms a directional cooling airflow, which rapidly cools the solder on the welding column 310, preventing solder dripping. The cooling component is fixed above the welding position, ensuring that the cooling process occurs when the welding mechanism 300 is completely withdrawn to its highest point and away from the welding position, thus avoiding interference from the cooling component to the welding process of the welding column 310.

[0056] like Figure 6 As shown, this application also provides a method for fabricating a positioning antenna, which is fabricated using the high-precision positioning antenna 20 communication device described in any of the above embodiments. The method for fabricating the positioning antenna includes the following steps:

[0057] S101 Obtain the positioning antenna of the through hole to be connected;

[0058] S103 The positioning antenna is installed in the mounting slot, the external negative pressure source is activated, and the positioning antenna is moved to the underside of the welding mechanism by the negative pressure attraction generated by the negative pressure slot through the mounting fixture;

[0059] The S105 lifting mechanism controls the welding mechanism to descend. The heating end of the welding mechanism is close to the positioning antenna. The solder delivery pipe sends solder to the heating end of the welding mechanism for hot melting to form molten solder.

[0060] S107 During the hot melting process, the lifting mechanism shakes the welding mechanism to accelerate the wetting of the through hole by the hot melted solder. The negative pressure groove of the mounting fixture maintains the negative pressure attraction, and the negative pressure groove attraction guides the hot melted solder to fill the through hole.

[0061] The lifting mechanism described in S109 controls the welding mechanism to move away from the positioning antenna, thereby obtaining a positioning antenna that connects to the through hole.

[0062] In the above-mentioned method for fabricating a positioning antenna, the welding mechanism, under the control of the lifting mechanism, can precisely control the filling of the through-hole with hot-melt solder at the heating end of the welding mechanism. The lifting mechanism drives the welding mechanism to vibrate, so that the molten solder quickly and fully fills the through-hole, reducing the generation of bubbles and incomplete soldering in the through-hole. The negative pressure groove continuously provides attractive force during the welding process, guiding the molten solder to fill the through-hole in a directional manner, accelerating the filling speed of the molten solder in the through-hole, ensuring the efficiency of solder filling the through-hole, and significantly enhancing the electrical connectivity and mechanical stability of the solder in the through-hole.

[0063] Furthermore, in one embodiment, during the hot-melt process, the lifting mechanism vibrates the welding mechanism to accelerate the wetting of the through-hole by the hot-melt solder, and the negative pressure groove of the mounting fixture maintains a negative pressure attraction, the negative pressure groove attraction guiding the hot-melt solder to fill the through-hole, including the following steps:

[0064] During the initial hot-melt stage of the welding mechanism, vibration is performed using a first preset vibration frequency;

[0065] After the welding mechanism is fully heated, it is vibrated at a second preset vibration frequency, which is greater than the first preset vibration frequency. The negative pressure groove of the mounting fixture maintains a negative pressure attraction, and the negative pressure groove attraction guides the hot melt solder to fill the through hole.

[0066] In this embodiment, the first preset dithering frequency is 1Hz to 10Hz, and the second preset dithering frequency is 1515Hz to 50Hz. Using a lower frequency dithering during the initial hot melting stage is beneficial for the smooth melting and spreading of the solder, avoiding splashing or positioning deviation caused by violent disturbance. Increasing the dithering frequency after complete melting can significantly enhance the fluidity of the molten solder, thoroughly expel gas from the hole, ensure that the via is densely filled without voids, greatly reduce porosity, and improve connection reliability. The staged frequency control effectively matches the rheological characteristics of the solder in different melting states, overcoming the problem of uneven filling or overheating accumulation that may be caused by a single frequency. It is particularly suitable for welding deep micro-vias and helps to reduce defects such as cold solder joints and solder spikes.

[0067] Compared with the prior art, this disclosure has at least the following advantages:

[0068] The aforementioned high-precision positioning antenna connection device 10 uses a lifting mechanism 200 to drive a welding mechanism 300 to perform high-frequency micro-amplitude vibration, which intensifies the movement of molten solder molecules and enhances their fluidity. This allows the molten solder to quickly and thoroughly wet the through-hole 201, ensuring that the through-hole 201 is fully filled and preventing air bubbles or incomplete soldering. During the welding process, the negative pressure attraction provided by the negative pressure groove 403 to the through-hole 201 causes the molten solder to fill the entire through-hole 201 in a directional manner, effectively removing gas from the through-hole 201 and accelerating the filling of the through-hole 201. Through the coordinated welding of vibration and negative pressure, the filling speed of the molten solder in the through-hole 201 is increased, solving the problem of solder filling in through-holes with large diameters. This ensures that the lines on both sides of the positioning antenna 20 are reliably electrically connected through the through-hole 201, thereby achieving a high-precision and high-reliability welding effect for the positioning antenna 20.

[0069] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A high-precision positioning antenna connection device, comprising a gantry mechanism, a lifting mechanism, a welding mechanism, and a mounting fixture, wherein the lifting mechanism is slidably disposed on the gantry mechanism, the welding mechanism is connected to the lifting mechanism, and the welding mechanism is disposed above the mounting fixture, characterized in that, The heating end of the welding mechanism is used to heat the molten solder. The welding mechanism has an installation through hole for installing the solder delivery pipe. The lifting mechanism is used to control the welding mechanism to perform high-frequency micro-amplitude vibration to accelerate the wetting of the molten solder into the through hole of the positioning antenna. The welding mechanism includes a welding column, a connecting frame assembly, and a multi-directional solder rack assembly. The connecting frame assembly is fixed to the lifting end of the lifting mechanism. The welding column is fixed to the connecting frame assembly. The multi-directional solder rack assembly is fixed to the connecting frame assembly and is disposed on one side of the welding column. The multi-directional solder rack assembly is used to install the solder delivery pipe. The connecting frame assembly includes a connecting plate, an elastic element, and a movable plate. The connecting plate is installed on the lifting mechanism. The movable plate is slidably disposed on the connecting plate. The two ends of the elastic element elastically abut against the movable plate and the connecting plate, respectively. The welding column is fixed to the movable plate. The mounting fixture has a mounting groove and a negative pressure channel. The mounting groove is used to mount the positioning antenna. A negative pressure groove is formed between the bottoms of the mounting groove. The negative pressure channel is connected to the negative pressure groove and is connected to an external negative pressure source. The negative pressure groove is used to apply negative pressure attraction during the welding process to guide the molten solder through the through hole of the positioning antenna.

2. The high-precision positioning antenna communication device according to claim 1, characterized in that, The connecting frame assembly also includes an arc-shaped adjusting component, which has an arc-shaped groove. One end of the lifting mechanism is slidably disposed in the arc-shaped groove, and the other end of the connecting plate is slidably disposed in the arc-shaped groove.

3. The high-precision positioning antenna communication device according to claim 1, characterized in that, The mounting fixture includes a fixture body and a fixture cover plate. The mounting groove and the negative pressure channel are formed in the fixture body. The fixture cover plate covers the fixture body and is hinged to the fixture body. The fixture cover plate has welding through holes.

4. The high-precision positioning antenna connection device according to claim 3, characterized in that, The fixture body is provided with a wire block, and the fixture body is also provided with an embedding groove. The wire block can be detachably installed in the embedding groove, and the wire block is provided with a wire groove.

5. The high-precision positioning antenna communication device according to claim 1, characterized in that, The lifting mechanism includes a lifting component and a driving component. The lifting component includes a sliding base, a lifting guide rail, and a lifting column. The sliding base is slidably disposed on the gantry mechanism. The lifting guide rail is disposed vertically on the sliding base. The lifting column is slidably disposed on the lifting guide rail. The driving component is fixed to the gantry mechanism and is used to drive the lifting column to perform reciprocating motion.

6. The high-precision positioning antenna communication device according to claim 5, characterized in that, The drive assembly includes a drive roller, a driven roller, a conveyor belt, and a drive motor. The drive roller and the driven roller are respectively disposed on both sides of the lifting guide rail. The conveyor belt is sleeved on the drive roller and the driven roller. The lifting column is connected to the conveyor belt. The drive motor is used to drive the conveyor belt to perform reciprocating motion.

7. The high-precision positioning antenna communication device according to claim 1, characterized in that, The high-precision positioning antenna connection device also includes a fixture guide rail mechanism, which includes a guide rail assembly and a fixture base. The mounting fixture is fixed to the fixture base, and the guide rail assembly is used to control the reciprocating motion of the fixture base.

8. A method for manufacturing a positioning antenna, characterized in that, The high-precision positioning antenna is manufactured using any one of claims 1-7, and the method for manufacturing the positioning antenna includes the following steps: Obtain the positioning antenna for the through hole to be connected; The positioning antenna is installed in the mounting slot. An external negative pressure source is activated, and the negative pressure generated by the negative pressure slot is used to move the positioning antenna to the bottom of the welding mechanism through the mounting fixture. The lifting mechanism controls the welding mechanism to descend, the heating end of the welding mechanism is close to the positioning antenna, and the solder delivery pipe sends solder to the heating end of the welding mechanism for heat melting. During the hot melting process, the lifting mechanism shakes the welding mechanism to accelerate the wetting of the through hole by the hot melted solder. The negative pressure groove of the mounting fixture maintains the negative pressure attraction, and the negative pressure groove attraction guides the hot melted solder to fill the through hole. The lifting mechanism controls the welding mechanism to move away from the positioning antenna, thereby obtaining a positioning antenna that connects to the through hole.

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