Connector welding tool and using method thereof

Abstract

The invention discloses a connector welding tool and a using method thereof.The tool comprises a base, a cover plate and fixing assemblies, one side of the base is connected with the cover plate, the base is provided with a sliding groove A and a sliding groove B, and the fixing assemblies are arranged in the sliding groove A and the sliding groove B. According to the tool disclosed by the invention, the radio frequency SMP / SSMP connector is quickly and accurately positioned through the positioning pin and the positioning groove; an insulator lead is avoided through the hollow point hole A in the middle of the pressing nail, and the insulator is prevented from floating upwards after soldering tin is melted in the welding process. By using the tool provided by the invention, after the insulator and the radio frequency SMP / SSMP connector are welded, the assembly precision is superior to 0.05 mm, and the welding requirement is met.

Description

Technical Field

[0001] The invention belongs to the technical field of welding tooling, and in particular relates to a connector welding tooling and a use method thereof. Background Art

[0002] In millimeter wave components, a large number of glass insulators and RF SMP / SSMP connectors are used to achieve electrical interconnection of RF signals, intermediate frequency signals and power signals. For example, a certain millimeter wave component product uses 51 glass insulators, 4 RF SSMP connectors and 9 RF SMP connectors. To ensure reliable transmission of millimeter wave component signals, insulators and RF SMP / SSMP connectors need to be welded with high precision and high reliability. The assembly accuracy of insulators and RF SMP / SSMP connectors after welding should be better than 0.05mm.

[0003] Conventional welding process methods cannot achieve the same temperature gradient welding of a large number of glass insulators and RF SMP / SSMP connectors, and it is difficult to ensure welding accuracy and quality. When the welding accuracy does not meet the requirements, the insertion loss of the millimeter wave component will increase, affecting the product index requirements; too many welding temperature gradients will increase the difficulty of operation and increase production costs. In order to meet the above welding index requirements, special welding tools need to be made during the welding process.

[0004] The patent document with announcement number CN109926676A discloses a welding device and welding method for an SMP connector, wherein the plug is against the SMP connector, the spring is connected between the plug and the connector; the spring pin is fixedly connected to the block through the connector, and the block is fixedly connected to the bottom plate. The SMP connector can be fixed and positioned by elastic tooling, but the device lacks a quick positioning component, which requires increased installation time when a large number of connectors are set. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a connector welding tool and a use method thereof.

[0006] The present invention is achieved through the following technical solutions.

[0007] A connector welding tool provided by the present invention comprises a base, a cover plate, and a fixing assembly, wherein one side of the base is connected to the cover plate, a slide groove A and a slide groove B are arranged on the base, and the fixing assembly is arranged in the slide groove A and the slide groove B.

[0008] Preferably, a boss, a screw hole and a positioning pin are arranged on the base, the slide groove A and the slide groove B are arranged on the boss, and the screw hole and the positioning pin are arranged on the edge of the boss.

[0009] Preferably, a connecting piece is provided on the base, a socket is provided on the connecting piece, and a positioning groove is provided on the boss.

[0010] Preferably, the fixing assembly comprises an elastic member and a pressing pin, one end of the elastic member is connected to the bottom surface of the slide groove A or the slide groove B, and the other end of the elastic member is connected to the pressing pin.

[0011] Preferably, the press nail comprises a limiting member and a fixing member, and one end of the limiting member is connected to the fixing member.

[0012] Preferably, a hole A is provided at one end of the fixing member.

[0013] Preferably, screw holes B and through holes are provided on the cover plate.

[0014] A method for using a connector welding tool comprises the following steps:

[0015] S1: Prepare the connector by positioning the connector with the positioning pin and positioning groove, so that the tooling is connected to the connector.

[0016] S2: Fix the insulator surface of the connector by the pressure pins of the fixing assembly, place the lead wire of the insulator in the hole A of the pressure pin for avoidance, and complete the fixation of the tooling and the connector.

[0017] Preferably, the preparation step includes coating a solder resist film on a solder cup opening of the connector before the tooling is connected to the connector.

[0018] The beneficial effects of the present invention are:

[0019] The tooling of the present invention can quickly and accurately position the RF SMP / SSMP connector through the positioning pin and the positioning groove; the insulator lead is avoided through the leakage point hole A in the middle of the pressure nail to prevent the insulator from floating up after the solder melts during the welding process. Using the tooling of the present invention, the assembly accuracy of the insulator and the RF SMP / SSMP connector after welding is better than 0.05mm, meeting the welding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the nail pressing part of the present invention;

[0023] Figure 4 It is a structural schematic diagram of one side of the base of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the press nail of the present invention;

[0025] In the figure: 1-base, 11-slide groove A, 12-slide groove B, 13-boss, 14-screw hole, 15-positioning pin, 16-connecting piece, 17-positioning groove, 2-cover plate, 21-screw hole B, 22-through hole, 3-fixing component, 4-elastic piece, 5-pressing nail, 51-limiting piece, 52-fixing piece, 53-hole A. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0027] Example:

[0028] like Figures 1 to 5 As shown, a connector welding tool comprises a base 1, a cover plate 2, and a fixing component 3. One side of the base 1 is connected to the cover plate 2. The base 1 can be cylindrical. The base 1 is provided with a slide groove A11 and a slide groove B12. The number of slide grooves A11 and B12 can be prepared in multiple numbers, which is convenient for setting multiple fixing components 3. The fixing components 3 are arranged in the slide grooves A11 and B12. The diameter of the slide groove A11 is smaller than the diameter of the slide groove B12. The larger diameter of the slide groove B12 can be used. This connector welding tool is suitable for high-precision and high-reliability welding of a large number of insulators of millimeter wave components and radio frequency SMP / SSMP connectors.

[0029] The base 1 is provided with a boss 13, a screw hole 14 and a positioning pin 15, the slide groove A11 and the slide groove B12 are provided at the boss 13, and the screw hole 14 and the positioning pin 15 are provided at the edge of the boss 13. The boss 13 is circular in shape and protrudes from one side of the base 1, and is used to adapt to the connection with the connector.

[0030] The base 1 is provided with a connector 16 , on which a socket is provided. The shape and number of sockets of the connector 16 correspond to the RF SMP / SSMP connector model. The connector 16 can be connected to a connector pin structure that does not need to be fixed. A positioning groove 17 is provided on the boss 13 .

[0031] The fixing assembly 3 includes an elastic member 4 and a pressing pin 5. One end of the elastic member 4 is connected to the bottom surface of the slide groove A11 or the slide groove B12, and the other end of the elastic member 4 is connected to the pressing pin 5. The pressing pin 5 is placed in the slide groove A11 or the slide groove B12 for sliding connection.

[0032] The pressing nail 5 includes a limiting member 51 and a fixing member 52. One end of the limiting member 51 is connected to the fixing member 52. The diameter of the elastic member 4 is smaller than that of the limiting member 51 to prevent the pressing nail 5 from penetrating the elastic member 4. The fixing member 52 is used to fix the surface of the connector insulator.

[0033] A hole A53 is disposed at one end of the fixing member 52 away from the limiting member 51 .

[0034] The cover plate 2 is provided with screw holes B21 and through holes 22. The base 1 and the cover plate 2 can be fastened together by using bolts of different specifications to penetrate the screw holes B21 and through holes 22 of the cover plate 2 and then connect with the screw holes 14. The chute A11 and the chute B12 can be set as through holes for easy processing, and then one end of the chute A11 and the chute B12 is closed by the cover plate 2.

[0035] A method for using a connector welding tool comprises the following steps:

[0036] S1: Prepare the connector by positioning the connector with the positioning pin 15 and the positioning groove 17 so that the tooling is connected to the connector.

[0037] S2: Fix the insulator surface of the connector by the pressing pin 5 of the fixing assembly 3, place the lead wire of the insulator in the hole A53 of the pressing pin 5 for avoidance, and complete the fixation of the tooling and the connector.

[0038] The preparation step includes applying a circle of solder resist film on the connector solder cup before the tooling is connected to the connector. The RF SMP / SSMP connector is a gold-plated device. During the soldering process, the solder can easily flow into the connector through the gold-plated layer. Applying a circle of solder resist film on the connector solder cup can prevent the solder from flowing into the solder cup.

[0039] In order to ensure the welding accuracy of the insulator and the RF SMP / SSMP connector after welding and realize the integrated welding of the insulator and the RF SMP / SSMP connector, the pressing pin 5 and the base 1 are designed as one body. During the welding process, the pressing pin 5 fixes the surface of the insulator, and the insulator lead is avoided through the leakage point hole A53 in the middle of the pressing pin 5 to prevent the insulator from floating up after the solder melts during the welding process. The tolerance of the pressing pin 5 is guaranteed to be ±0.02mm, so as to achieve an assembly accuracy of the insulator after welding that is better than ±0.05mm.

[0040] The pressure pin 5 is made according to different specifications of RF SMP / SSMP connectors. During the welding process, the pressure pin 5 is inserted into the inside of the RF SMP / SSMP connector solder cup for fixing to prevent the connector from floating up after the solder melts during the welding process. The tolerance of the slide groove A11 and the slide groove B12 is guaranteed to be ±0.02mm. Each pressure pin 5 is connected to the elastic member 4. The elastic force of the elastic member 4 enables multiple pressure pins 5 to keep the connector fixed, thereby ensuring that the welding accuracy of the connector is better than ±0.05mm and the consistency is good, avoiding the situation where multiple welding temperature gradients are required during the welding process;

[0041] Since the RF SMP / SSMP connector and the base 1 are both circular, and there are a large number of insulators and connectors to be fixed, in order to facilitate the rapid clamping of the tooling, the two are positioned by the positioning pin 15 and the positioning groove 17. The tolerance of the positioning pin 15 and the positioning groove 17 is guaranteed to be ±0.02mm. The height of the positioning pin 15 can be greater than the height of the boss 13, so that there can be a certain gap after the tooling and the connector are connected, which can prevent the tooling from crushing the leads of the insulator and the connector. High-precision and high-reliability welding of a large number of insulators and RF SMP / SSMP connectors of millimeter wave components is achieved.

[0042] Frequency conversion module primary pass rate calculation table

[0043]

[0044]

[0045] The integrated channel component frequency conversion module is designed with insulator and connector fixing fixtures. After using this fixture, the one-time qualified rate of the product is increased from 40.9% to 99.7%. The insulators and connectors are protected with silicone rubber. After the frequency conversion module is welded, there is no excess solder on the bonding surface of the insulator and connector leads, which is clean and pollution-free. The coplanarity tester is used to test the assembly accuracy of the frequency conversion module after welding. The accuracy is better than 0.05mm. The test results are shown in the table below.

[0046] Coplanarity test table

[0047]

[0048]

[0049]

[0050] It can be seen from the above table that the assembly accuracy of the frequency conversion module after welding is good and all are qualified. The use of the tooling in this application can ensure the stability of product quality.

Claims

1. A connector welding tool, characterized in that: The invention comprises a base (1), a cover plate (2), and a fixing assembly (3); one side of the base (1) is connected to the cover plate (2); the base (1) is provided with a slide groove A (11) and a slide groove B (12); and the fixing assembly (3) is arranged in the slide groove A (11) and the slide groove B (12).

2. A connector welding tool as claimed in claim 1, characterized in that: The base (1) is provided with a boss (13), a screw hole (14) and a positioning pin (15); the slide groove A (11) and the slide groove B (12) are provided at the boss (13); and the screw hole (14) and the positioning pin (15) are provided at the edge of the boss (13).

3. A connector welding tool as claimed in claim 2, characterized in that: A connecting piece (16) is arranged on the base (1), a plug hole is arranged on the connecting piece (16), and a positioning groove (17) is arranged on the boss (13).

4. A connector welding tool as claimed in claim 1, characterized in that: The fixing assembly (3) comprises an elastic member (4) and a pressing pin (5); one end of the elastic member (4) is connected to the bottom surface of the slide groove A (11) or the slide groove B (12), and the other end of the elastic member (4) is connected to the pressing pin (5).

5. A connector welding tool as claimed in claim 4, characterized in that: The pressing nail (5) comprises a limiting member (51) and a fixing member (52), and one end of the limiting member (51) is connected to the fixing member (52).

6. A connector welding tool as claimed in claim 5, characterized in that: A hole A (53) is provided at one end of the fixing member (52).

7. A connector welding tool as claimed in claim 1, characterized in that: The cover plate (2) is provided with a screw hole B (21) and a through hole (22).

8. A method for using the connector welding tool as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Performing a preparation step for the connector, positioning the connector through the positioning pin (15) and the positioning groove (17), so that the tooling is connected to the connector; S2: The surface of the insulator of the connector is fixed by the pressing pin (5) of the fixing assembly (3), and the lead wire of the insulator is placed in the hole A (53) of the pressing pin (5) for avoidance, thereby completing the fixing of the tooling and the connector.

9. A method for using a connector welding tool point according to claim 8, characterized in that: The preparation step includes coating a solder resist film on the solder cup opening of the connector before the tooling is connected to the connector.

Images