Welding tool for solenoid valve terminal

Abstract

This utility model discloses a welding fixture for solenoid valve terminals, belonging to the field of solenoid valve terminal welding technology. It includes: a first positioning fixture, a wire clamping module, a second positioning fixture, at least one position fine-tuning module, and at least one soldering iron. The first positioning fixture has several first positioning slots and several positioning posts. A first positioning component is disposed within each of the first positioning slots, and a second positioning slot and a pair of third positioning slots are disposed on each first positioning component. The wire clamping module is arranged adjacent to the first positioning slots and is used to clamp the connecting wire. The second positioning fixture has a first guide rod and a first slide rail. The position fine-tuning module is connected to the second positioning fixture and its position on the second positioning fixture is adjustable. The soldering iron is connected to the position fine-tuning module, which is used to adjust the position of the soldering iron. The soldering iron is equipped with a solder feeding mechanism. This utility model can adapt to various types of valve seats and connecting wires, greatly improving welding efficiency and welding quality.

Description

Technical Field

[0001] This utility model relates to the field of welding technology for solenoid valve terminals, and in particular to a welding fixture for solenoid valve terminals. Background Technology

[0002] A solenoid valve is a device that controls fluid media by controlling electromagnetic force. Solenoid valves are widely used in various fields, such as industrial automation control systems, hydraulic systems, air conditioning and refrigeration equipment, medical equipment, and automobiles. Based on different working principles and structural forms, solenoid valves can be divided into several types, including direct-acting, guided, diaphragm, and cartridge types. A solenoid valve seat has a pair of terminals that need to be soldered to a pair of connecting wires. Since there are many different models of solenoid valves and different types of connecting wires, equipping each solenoid valve with a dedicated soldering device would be extremely expensive. Given the low profit margin of solenoid valves, the terminals are mostly soldered manually to reduce production costs. Furthermore, existing three-coordinate drive devices may introduce deviations when using soldering irons due to valve seat size issues and positioning fixture problems, which can also increase the defect rate. Summary of the Invention

[0003] According to an embodiment of the present invention, a welding fixture for the wiring terminals of a solenoid valve is provided, comprising:

[0004] The first positioning fixture is provided with a plurality of first positioning slots and a plurality of positioning posts. The positioning posts are detachably mounted on the first positioning fixture and correspond one-to-one with the plurality of first positioning slots.

[0005] A first positioning component is provided in the first positioning groove, and a second positioning groove and a pair of third positioning grooves are provided on the first positioning component. The first positioning component is detachably installed in the first positioning groove.

[0006] The positioning pin is used to position the valve seat of the solenoid valve;

[0007] The second and third positioning slots are used to place the connecting wires of the solenoid valve.

[0008] A wire pressing module is arranged adjacent to the first positioning groove and is used to press the connecting wire.

[0009] The second positioning fixture is provided with a first guide rod and a first slide rail, and the second positioning fixture is connected to an external driving device.

[0010] At least one position fine-tuning module is connected to a second positioning fixture, and its position on the second positioning fixture is adjustable.

[0011] At least one soldering iron is provided, and the soldering iron is connected to a position fine-tuning module, which is used to adjust the position of the soldering iron; the soldering iron is provided with a solder feeding mechanism, which is used to automatically feed solder to the soldering iron.

[0012] Furthermore, the first positioning component is provided with a first slide groove and a second slide groove that are perpendicular to each other; the first positioning fixture is provided with a third slide groove that corresponds to the first slide groove, and the third slide groove is located below the first slide groove and is connected to the first slide groove.

[0013] The wire pressing module includes a wire pressing plate, a first snap-fit ​​component, a second snap-fit ​​component, a first limiting component, a second limiting component, a limiting washer, a first fixing screw, a first spring, and a second spring;

[0014] The wire clamp is located at the upper end of the first connector;

[0015] The first card receiver is set in the first slide groove, and a first limiting step is provided in the middle of the first card receiver;

[0016] The limiting washer is located at the lower end of the first snap-fit ​​component and is fixed by the first fixing screw;

[0017] The first spring is disposed in the third slide groove and connected to the first fixing screw for resetting the first snap-fit ​​component;

[0018] The second card connector is movably disposed within the second slide groove. The second card connector has a U-shaped groove at one end near the first card connector, and the other end protrudes from the second slide groove; the first card connector is located within the first U-shaped groove.

[0019] The first limiting member is set in the U-shaped groove, and its two ends are detachably connected to the second snap-fit ​​member, and can be snapped with the first limiting step to limit the position of the first snap-fit ​​member;

[0020] The second limiting member is detachably disposed at one end of the second slide groove near the first limiting member;

[0021] The second spring is disposed in the second slide groove, with one end connected to the first limiting member and the other end connected to the second limiting member, and is used for the reset of the second snap-fit ​​member.

[0022] Furthermore, the wire pressing module also includes: a button, which is threadedly connected to the upper end of the first snap-fit ​​component, and a wire pressing plate is located below the button.

[0023] Furthermore, the first positioning component includes: a first positioning block and a second positioning block; the first positioning block and the second positioning block are detachably disposed within the first positioning groove;

[0024] The wire clamping module includes several rotary clamping cylinders. The output end of each rotary clamping cylinder is equipped with a clamping arm, which can drive the clamping arm to clamp the connecting wire.

[0025] Furthermore, the position fine-tuning module includes: a first positioning seat, a longitudinal fine-tuning mechanism, a lateral fine-tuning mechanism, and an angle fine-tuning mechanism;

[0026] The first positioning seat is slidably connected to the first guide rod and the first slide rail respectively, and can be locked to the first guide rod or the first slide rail by a locking block;

[0027] The angle fine-tuning mechanism is connected to the soldering iron and can adjust the angle of the soldering iron in two directions;

[0028] The horizontal fine-tuning mechanism is connected to the angle fine-tuning mechanism and the vertical fine-tuning mechanism respectively, and is used to adjust the horizontal position of the soldering iron.

[0029] The longitudinal fine-tuning mechanism is connected to the first positioning seat and is used to adjust the longitudinal position of the soldering iron.

[0030] Furthermore, the longitudinal fine-tuning mechanism includes: a first micrometer, a second positioning seat, a second slide rail, and at least one third spring;

[0031] The second slide rail is mounted on the first positioning seat;

[0032] The second positioning seat is slidably connected to the first positioning seat via the second slide rail. A second limiting step is provided at each of the upper and lower ends of the first positioning seat to limit the travel of the second positioning seat.

[0033] One end of the third spring is connected to the second positioning seat, and the other end is connected to the lower end of the first positioning seat;

[0034] The first micrometer is set on top of the second positioning base, and the micrometer screw of the first micrometer can contact the top of the first positioning base;

[0035] The third spring keeps the micrometer screw of the first micrometer pressed tightly against the first positioning seat. Rotating the first micrometer can drive the second positioning seat to slide on the second slide rail.

[0036] Furthermore, the lateral fine-tuning mechanism includes: a third positioning seat, a pair of second guide rods, a fourth positioning seat, a second micrometer, and at least one fourth spring;

[0037] One end of a pair of second guide rods is fixedly connected to a second positioning seat, and the other end is fixedly connected to a fourth positioning seat;

[0038] The third positioning seat is slidably mounted on a pair of second guide rods and can slide along the second guide rods;

[0039] One end of the fourth spring is connected to the third positioning seat, and the other end is connected to the second positioning seat;

[0040] The second micrometer is connected to the fourth positioning base, and the micrometer screw of the second micrometer can contact one side of the third positioning base;

[0041] The fourth spring keeps the micrometer screw of the second micrometer pressed tightly against the third positioning seat. Rotating the second micrometer drives the third positioning seat to slide on the second guide rod.

[0042] Furthermore, the fourth spring is sleeved on the second guide rod, located between the third positioning seat and the second positioning seat.

[0043] Furthermore, the angle fine-tuning mechanism includes: a first adjusting plate and a second adjusting plate;

[0044] The first adjusting plate and the second adjusting plate are vertically connected; the first adjusting plate is detachably connected to the third positioning seat, and the second adjusting plate is detachably connected to the soldering iron.

[0045] The first adjusting plate is provided with a first positioning hole and a first arc hole. It is detachably connected to the third positioning seat by two screws passing through the first positioning hole and the first arc hole respectively. The first arc hole can adjust the angle of the first adjusting plate.

[0046] The second adjustment plate is provided with a second positioning hole and a second arc hole. It is detachably connected to the soldering iron by two screws passing through the second positioning hole and the second arc hole respectively. The second arc hole can adjust the angle of the soldering iron.

[0047] The welding fixture for the solenoid valve terminals according to the present invention can be adapted to various types of valve seats and connecting wires, greatly improving welding efficiency and welding quality.

[0048] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0050] Figure 2 for Figure 1 Enlarged view of point A;

[0051] Figure 3 This is a schematic diagram of the structure of the first positioning fixture, the first positioning component, and the wire pressing module according to an embodiment of the present utility model;

[0052] Figure 4 for Figure 3 Enlarged view of point B;

[0053] Figure 5 This is a schematic diagram of the structure of the first positioning fixture, the first positioning component, and the pressure module according to another embodiment of the present invention;

[0054] Figure 6 for Figure 5 Top view;

[0055] Figure 7 for Figure 6 Sectional view along axis AA;

[0056] Figure 8 This is a schematic diagram of the structure of the first positioning component and the pressure wire module according to an embodiment of the present utility model;

[0057] Figure 9 for Figure 8 The front view;

[0058] Figure 10 for Figure 9 BB-direction sectional view;

[0059] Figure 11 This is a partial structural schematic diagram of the pressing module according to an embodiment of the present utility model;

[0060] Figure 12 This is a structural schematic diagram of the position fine-tuning module according to an embodiment of the present invention;

[0061] Figure 13 for Figure 12 Top view;

[0062] Figure 14 for Figure 12 The right view;

[0063] Figure 15 This is a structural schematic diagram of the angle fine-tuning mechanism according to an embodiment of the present utility model. Detailed Implementation

[0064] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0065] First, combine Figures 1-15 The present invention describes a welding fixture for the wiring terminals of a solenoid valve according to an embodiment of the present invention, which is used in the production of solenoid valves and has a wide range of applications.

[0066] like Figures 1-15 As shown, the welding fixture for the solenoid valve terminals in this embodiment of the present invention includes:

[0067] The first positioning fixture 1 is provided with a plurality of first positioning grooves 11 and a plurality of positioning posts 12. The positioning posts 12 are detachably mounted on the first positioning fixture 1 and correspond one-to-one with the plurality of first positioning grooves 11.

[0068] A first positioning component 2 is provided in the first positioning groove 11. The first positioning component 2 is provided with a second positioning groove 21 and a pair of third positioning grooves 22. The first positioning component 2 is detachably provided in the first positioning groove 11.

[0069] The positioning pin 12 is used to position the valve seat 7 of the solenoid valve. The top of the positioning pin 12 is chamfered to facilitate the insertion of the valve seat 7. The positioning pin 12 of the corresponding size can be installed on the first positioning fixture 1 as required.

[0070] The second positioning groove 21 and the third positioning groove 22 are used to place the connecting wire 8 of the solenoid valve. When the connecting wire 8 is pre-tied together, the second positioning groove 21 is selected; when the connecting wire 8 is separated, the third positioning groove 22 is selected.

[0071] The wire pressing module 3 is arranged adjacent to the first positioning groove 11 and is used to press the connecting wire 8 to prevent the connecting wire 8 from moving during welding.

[0072] The second positioning fixture 4 is provided with a first guide rod 41 and a first slide rail 42, and the second positioning fixture 4 is connected to an external driving device.

[0073] At least one position fine-tuning module 5 is connected to the second positioning fixture 4, and its position on the second positioning fixture 4 is adjustable.

[0074] At least one soldering iron 6 (prior art) is connected to a position fine-tuning module 5, which is used to adjust the position of the soldering iron 6; the soldering iron 6 is provided with a solder feeding mechanism 61 (prior art), which is used to automatically feed solder to the soldering iron 6.

[0075] Furthermore, such as Figures 5-11 As shown, in this embodiment, the first positioning component 2 is provided with a first sliding groove 23 and a second sliding groove 24 that are perpendicular to each other; the first positioning fixture 1 is provided with a third sliding groove 13 corresponding to the first sliding groove 23, and the third sliding groove 13 is located below the first sliding groove 23 and is connected to the first sliding groove 23.

[0076] The wire pressing module 3 includes a wire pressing plate 30, a first snap-fit ​​component 31, a second snap-fit ​​component 32, a first limiting component 33, a second limiting component 34, a limiting washer 35, a first fixing screw 36, a first spring 37, and a second spring 38.

[0077] The wire clamp 30 is located on the upper end of the first snap-fit ​​component 31;

[0078] The first card connector 31 is movably disposed within the first slide groove 23, and a first limiting step 311 is provided in the middle of the first card connector 31;

[0079] The limiting washer 35 is disposed at the lower end of the first snap-fit ​​member 31 and is fixed by the first fixing screw 36;

[0080] The first spring 37 is disposed in the third slide groove 13 and connected to the first fixing screw 36 for resetting the first snap-fit ​​31;

[0081] The second card connector 32 is movably disposed in the second slide groove 24. The end of the second card connector 32 near the first card connector 31 is provided with a U-shaped groove 321, and the first card connector 31 is located in the first U-shaped groove 321.

[0082] The first limiting member 33 is disposed in the U-shaped groove 321, and its two ends are detachably connected to the second snap-fit ​​member 32, and can be snapped with the first limiting step 311 to limit the position of the first snap-fit ​​member 31;

[0083] The second limiting member 34 is detachably disposed at one end of the second slide groove 24 near the first limiting member 33;

[0084] The second spring 38 is disposed in the second slide groove 24, with one end connected to the first limiting member 33 and the other end connected to the second limiting member 34, for resetting the second snap-fit ​​member 32.

[0085] Furthermore, such as Figures 7-9 As shown, in this embodiment, the wire pressing module 3 further includes: a button 39, which is threadedly connected to the upper end of the first snap-fit ​​member 31, and the wire pressing plate 30 is disposed below the button 39.

[0086] In its initial state, the second spring 38 is compressed. When button 39 is pressed, the first latching member 31 descends, the first spring 37 is compressed, and the wire clamping plate 30 presses down on the connecting wire 8. At the same time, the second latching member 32 moves to the right, and the first limiting member 33 moves above the first limiting step 311, locking the first latching member 31. When it is necessary to release the connecting wire 8, pressing one end of the second latching member 32 protruding from the second slide groove 24 causes the first limiting member 33 to disengage from the first limiting step 311. Under the compression force of the first spring 37, the first latching member 31 returns to its original position, and the wire clamping plate 30 disengages from the connecting wire 8.

[0087] Furthermore, such as Figures 1-4 As shown, in this embodiment, the first positioning component 2 includes: a first positioning block 25 and a second positioning block 26; the first positioning block 25 and the second positioning block 26 are detachably disposed in the first positioning groove 11; the second positioning block 26 of different lengths can be selected according to the length of the connecting line 8; the first positioning block 25 and the second positioning block 26 are respectively provided with corresponding second positioning grooves 21 and third positioning grooves 22.

[0088] The wire clamping module 3 includes several rotary clamping cylinders 310. The output end of the rotary clamping cylinder 310 is provided with a clamping arm 3101. The rotary clamping cylinder 310 can drive the clamping arm 3101 to clamp the connecting wire 8.

[0089] Furthermore, such as Figures 1-2As shown in Figures 12-15, in this embodiment, the position fine-tuning module 5 includes: a first positioning seat 51, a longitudinal fine-tuning mechanism 52, a lateral fine-tuning mechanism 53, and an angle fine-tuning mechanism 54;

[0090] The first positioning seat 51 is slidably connected to the first guide rod 41 and the first slide rail 42 respectively, and can be locked between the first guide rod 41 or the first slide rail 42 by a locking block;

[0091] The angle fine-tuning mechanism 54 is connected to the soldering iron 6 and can adjust the angle of the soldering iron 6 in two directions;

[0092] The horizontal fine-tuning mechanism 53 is connected to the angle fine-tuning mechanism 54 and the vertical fine-tuning mechanism 52 respectively, and is used to adjust the horizontal position of the soldering iron 6.

[0093] The longitudinal fine-tuning mechanism 52 is connected to the first positioning seat 51 and is used to adjust the longitudinal position of the soldering iron 6.

[0094] Furthermore, such as Figure 1 , 12 As shown in ~15, in this embodiment, the longitudinal fine-tuning mechanism 52 includes: a first micrometer 521, a second positioning seat 522, a second slide rail 523, and at least one third spring 524;

[0095] The second slide rail 523 is mounted on the first positioning seat 51;

[0096] The second positioning seat 522 is slidably connected to the first positioning seat 51 via the second slide rail 523. The first positioning seat 51 is provided with a second limiting step 511 at each of its upper and lower ends. The second limiting step 511 is used to limit the travel of the second positioning seat 522.

[0097] One end of the third spring 524 is connected to the second positioning seat 522, and the other end is connected to the lower end of the first positioning seat 51.

[0098] The first micrometer 521 is located on top of the second positioning seat 522, and the micrometer screw of the first micrometer 521 can contact the top of the first positioning seat 51.

[0099] The third spring 524 keeps the micrometer screw of the first micrometer 521 in close contact with the first positioning seat 51. Rotating the first micrometer 521 can drive the second positioning seat 522 to slide on the second slide rail 523. When the micrometer screw of the first micrometer 521 extends, the second positioning seat 522 moves upward and the third spring 524 extends. When the micrometer screw of the first micrometer 521 shortens, the second positioning seat 522 moves downward under the tension of the third spring 524.

[0100] Furthermore, such as Figure 2 , 12As shown in ~15, in this embodiment, the lateral fine-tuning mechanism 53 includes: a third positioning seat 531, a pair of second guide rods 532, a fourth positioning seat 533, a second micrometer 534, and at least one fourth spring 535;

[0101] One end of a pair of second guide rods 532 is fixedly connected to a second positioning seat 522, and the other end is fixedly connected to a fourth positioning seat 533, with a certain distance between the two second guide rods 532;

[0102] The third positioning seat 531 is slidably mounted on a pair of second guide rods 532 and can slide along the second guide rods 532;

[0103] One end of the fourth spring 535 is connected to the third positioning seat 531, and the other end is connected to the second positioning seat 522;

[0104] The second micrometer 534 is connected to the fourth positioning seat 533, and the micrometer screw of the second micrometer 534 can contact one side of the third positioning seat 531.

[0105] The fourth spring 535 keeps the micrometer screw of the second micrometer 534 in close contact with the third positioning seat 531. Rotating the second micrometer 534 can drive the third positioning seat 531 to slide on the second guide rod 532.

[0106] Furthermore, such as Figure 14 As shown, in this embodiment, the fourth spring 535 is sleeved on the second guide rod 532 and located between the third positioning seat 531 and the second positioning seat 522; when the micrometer screw of the second micrometer 534 extends, the third positioning seat 531 moves to the right and the fourth spring 535 is compressed; when the micrometer screw of the second micrometer 534 shortens, the third positioning seat 531 moves to the left under the force of the fourth spring 535.

[0107] Furthermore, such as Figures 12-15 As shown, in this embodiment, the angle fine-tuning mechanism 54 includes: a first adjusting plate 541 and a second adjusting plate 542;

[0108] The first adjusting plate 541 and the second adjusting plate 542 are vertically connected; the first adjusting plate 541 is detachably connected to the third positioning seat 531, and the second adjusting plate 542 is detachably connected to the soldering iron 6.

[0109] The first adjusting plate 541 is provided with a first positioning hole 5411 and a first arc hole 5412. It is detachably connected to the third positioning seat 531 by two screws passing through the first positioning hole 5411 and the first arc hole 5412 respectively. The first arc hole 5412 can adjust the angle of the first adjusting plate 541.

[0110] The second adjusting plate 542 is provided with a second positioning hole 5421 and a second arc hole 5422. It is detachably connected to the soldering iron 6 by two screws passing through the second positioning hole 5421 and the second arc hole 5422 respectively. The second arc hole 5422 can adjust the angle of the soldering iron 6.

[0111] Working principle: In use, first, the valve seat 7 is placed on the positioning post 12, and then the corresponding connecting wire 8 is placed into the second positioning groove 21 or the third positioning groove 22. The wire clamping module 3 clamps the connecting wire 8. Then, the position of the soldering iron 6 is adjusted by the position fine-tuning module 5, and then the external drive device drives the soldering iron 6 to gradually approach and contact the point where the connecting wire 8 contacts the valve seat 7 terminal to begin trial soldering. After one soldering is completed, the worker checks its soldering quality. If it is not qualified, the position of the soldering iron 6 is adjusted again by the position fine-tuning module 5 until the trial soldering quality is qualified, and then batch soldering begins. After soldering is completed, the soldering iron 6 is retracted, the wire clamping module 3 is reset, the valve seat 7 and the connecting wire 8 are removed, and the next batch of soldering continues.

[0112] Above, refer to Figures 1-15 The present invention describes a welding fixture for the solenoid valve terminal block according to an embodiment of the present invention, which can be adapted to various types of valve seats 7 and connecting wires 8; thus greatly improving welding efficiency and welding quality.

[0113] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0114] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A welding fixture for solenoid valve terminals, characterized in that, Include: A first positioning fixture is provided with a plurality of first positioning slots and a plurality of positioning posts. The positioning posts are detachably mounted on the first positioning fixture and correspond one-to-one with the plurality of first positioning slots. A first positioning component is provided in the first positioning groove, and a second positioning groove and a pair of third positioning grooves are provided on the first positioning component. The first positioning component is detachably disposed in the first positioning groove. The positioning pin is used for positioning the valve seat of the solenoid valve; The second positioning groove and the third positioning groove are used to place the connecting wire of the solenoid valve; A wire pressing module is arranged adjacent to the first positioning groove and is used to press the connecting wire. The second positioning fixture is provided with a first guide rod and a first slide rail, and the second positioning fixture is connected to an external driving device. At least one position fine-tuning module is connected to the second positioning fixture, and its position on the second positioning fixture is adjustable; At least one soldering iron is provided, and the soldering iron is connected to the position fine-tuning module, which is used to adjust the position of the soldering iron; the soldering iron is provided with a solder feeding mechanism, which is used to automatically feed solder to the soldering iron.

2. The welding fixture for the solenoid valve terminals as described in claim 1, characterized in that, The first positioning component is provided with a first slide groove and a second slide groove that are perpendicular to each other; the first positioning fixture is provided with a third slide groove that corresponds to the first slide groove, and the third slide groove is located below the first slide groove and is connected to the first slide groove. The wire pressing module includes a wire pressing plate, a first snap-fit ​​component, a second snap-fit ​​component, a first limiting component, a second limiting component, a limiting washer, a first fixing screw, a first spring, and a second spring; The pressure plate is disposed on the upper end of the first snap-fit ​​component; The first card connector is movably disposed in the first slide groove, and a first limiting step is provided in the middle of the first card connector; The limiting gasket is disposed at the lower end of the first snap-fit ​​component and is fixed by the first fixing screw; The first spring is disposed in the third slide groove and connected to the first fixing screw for resetting the first snap-fit ​​component; The second snap-fit ​​component is movably disposed within the second slide groove. A U-shaped groove is provided at one end of the second snap-fit ​​component near the first snap-fit ​​component, and the first snap-fit ​​component is located within the first U-shaped groove. The first limiting member is disposed in the U-shaped groove, and its two ends are detachably connected to the second snap-fit ​​member, and can be snapped with the first limiting step to limit the position of the first snap-fit ​​member; The second limiting member is detachably disposed at one end of the second slide groove near the first limiting member; The second spring is disposed in the second groove, with one end connected to the first limiting member and the other end connected to the second limiting member, for resetting the second snap-fit ​​member.

3. The welding fixture for the solenoid valve terminals as described in claim 2, characterized in that, The wire pressing module further includes: a button, which is threadedly connected to the upper end of the first snap-fit ​​component, and the wire pressing plate is disposed below the button.

4. The welding fixture for the solenoid valve terminals as described in claim 1, characterized in that, The first positioning component includes: a first positioning block and a second positioning block; the first positioning block and the second positioning block are detachably disposed within the first positioning groove; The wire clamping module includes several rotary clamping cylinders, and the output end of each rotary clamping cylinder is provided with a clamping arm. The rotary clamping cylinder can drive the clamping arm to clamp the connecting wire.

5. The welding fixture for the solenoid valve terminals as described in claim 1, characterized in that, The position fine-tuning module includes: a first positioning seat, a longitudinal fine-tuning mechanism, a lateral fine-tuning mechanism, and an angle fine-tuning mechanism; The first positioning seat is slidably connected to the first guide rod and the first slide rail respectively, and can be locked to the first guide rod or the first slide rail by a locking block; The angle fine-tuning mechanism is connected to the soldering iron and can adjust the angle of the soldering iron in two directions; The lateral fine-tuning mechanism is connected to the angle fine-tuning mechanism and the longitudinal fine-tuning mechanism respectively, and is used to adjust the lateral position of the soldering iron; The longitudinal fine-tuning mechanism is connected to the first positioning seat and is used to adjust the longitudinal position of the soldering iron.

6. The welding fixture for the solenoid valve terminals as described in claim 5, characterized in that, The longitudinal fine-tuning mechanism includes: a first micrometer, a second positioning seat, a second slide rail, and at least one third spring; The second slide rail is mounted on the first positioning seat; The second positioning seat is slidably connected to the first positioning seat via the second slide rail. A second limiting step is provided at each of the upper and lower ends of the first positioning seat to limit the travel of the second positioning seat. One end of the third spring is connected to the second positioning seat, and the other end is connected to the lower end of the first positioning seat; The first micrometer is disposed on the top of the second positioning base, and the micrometer screw of the first micrometer can contact the top of the first positioning base; The third spring keeps the micrometer screw of the first micrometer pressed tightly against the first positioning seat, and rotating the first micrometer can drive the second positioning seat to slide on the second slide rail.

7. The welding fixture for the solenoid valve terminals as described in claim 6, characterized in that, The lateral fine-tuning mechanism includes: a third positioning seat, a pair of second guide rods, a fourth positioning seat, a second micrometer, and at least one fourth spring; One end of a pair of second guide rods is fixedly connected to the second positioning seat, and the other end is fixedly connected to the fourth positioning seat; The third positioning seat is slidably disposed on the pair of second guide rods and can slide along the second guide rods; One end of the fourth spring is connected to the third positioning seat, and the other end is connected to the second positioning seat; The second micrometer is connected to the fourth positioning base, and the micrometer screw of the second micrometer can contact one side of the third positioning base; The fourth spring causes the micrometer screw of the second micrometer to be in close contact with the third positioning seat. Rotating the second micrometer can drive the third positioning seat to slide on the second guide rod.

8. The welding fixture for the solenoid valve terminals as described in claim 7, characterized in that, The fourth spring is sleeved on the second guide rod and is located between the third positioning seat and the second positioning seat.

9. The welding fixture for the solenoid valve terminals as described in claim 7, characterized in that, The angle fine-tuning mechanism includes: a first adjustment plate and a second adjustment plate; The first adjusting plate and the second adjusting plate are vertically connected; the first adjusting plate is detachably connected to the third positioning seat, and the second adjusting plate is detachably connected to the soldering iron. The first adjustment plate is provided with a first positioning hole and a first arc hole. It is detachably connected to the third positioning seat by two screws passing through the first positioning hole and the first arc hole respectively. The first arc hole can adjust the angle of the first adjustment plate. The second adjustment plate is provided with a second positioning hole and a second arc hole. It is detachably connected to the soldering iron by two screws passing through the second positioning hole and the second arc hole respectively. The second arc hole can adjust the angle of the soldering iron.

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