Welding tool for wiring terminal of electromagnetic valve

Abstract

The invention discloses a welding tool for a wiring terminal of an electromagnetic valve, which belongs to the technical field of welding of the wiring terminal of the electromagnetic valve and comprises a first positioning jig, a wire pressing module, a second positioning jig, at least one position fine adjustment module and at least one electric soldering iron, wherein the first positioning jig is provided with a plurality of first positioning grooves and a plurality of positioning columns, first positioning assemblies are arranged in the first positioning grooves, and each first positioning assembly is provided with a second positioning groove and a pair of third positioning grooves; the wire pressing module is adjacent to the first positioning groove and is used for pressing the connecting wire; a first guide rod and a first sliding rail are arranged on the second positioning jig; the position fine adjustment module is connected with the second positioning jig, and the position of the position fine adjustment module on the second positioning jig is adjustable; the electric soldering iron is connected with the position fine adjustment module which is used for adjusting the position of the electric soldering iron. And a tin feeding mechanism is arranged on the electric soldering iron. The device can adapt to valve seats and connecting wires of various models; and the welding efficiency and the welding quality are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding of electromagnetic valve connecting terminals, in particular to a welding tool for electromagnetic valve connecting terminals. Background Art

[0002] A solenoid valve is a device that controls the fluid medium 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. According to different working principles and structural forms, solenoid valves can be divided into direct-acting, guided, diaphragm, plug-in and other types. A pair of terminals are provided on the valve seat of the solenoid valve, and a pair of terminals need to be welded to a pair of connecting wires respectively. Since there are many types of solenoid valves and different types of connecting wires, it will be very expensive if each solenoid valve is equipped with a dedicated welding device, and the solenoid valve itself has a low profit. Therefore, the wiring terminals of the solenoid valve are mostly manually welded to reduce production costs. In addition, when the existing three-coordinate drive device drives the electric soldering iron to weld, there may be certain deviations due to the size of the valve seat and the positioning fixture, which will also lead to an increase in the defective rate. Summary of the invention

[0003] According to an embodiment of the present invention, a welding tool for a solenoid valve terminal is provided, comprising: A first positioning jig is provided with a plurality of first positioning grooves and a plurality of positioning posts, and the positioning posts are detachably provided on the first positioning jig and correspond one-to-one with the plurality of first positioning grooves; A first positioning assembly is arranged in the first positioning groove, a second positioning groove and a pair of third positioning grooves are arranged on the first positioning assembly, and the first positioning assembly is detachably arranged in the first positioning groove; The positioning column is used to position 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, which is arranged adjacent to the first positioning groove and is used for pressing the connecting wire; A second positioning fixture, on which a first guide rod and a first slide rail are disposed, and the second positioning fixture is connected to an external driving device; At least one position fine-tuning module, the position fine-tuning module is connected to the second positioning fixture, and the position of the position fine-tuning module on the second positioning fixture is adjustable; At least one electric soldering iron is connected to a position fine-tuning module, and the position fine-tuning module is used to adjust the position of the electric soldering iron; the electric soldering iron is provided with a tin feeding mechanism, and the tin feeding mechanism is used to automatically feed tin to the electric soldering iron.

[0004] Furthermore, a first slide groove and a second slide groove perpendicular to each other are arranged in the first positioning assembly; a third slide groove corresponding to the first slide groove is arranged on the first positioning fixture, and the third slide groove is arranged below the first slide groove and communicated with the first slide groove; The wire pressing module comprises a wire pressing plate, a first clamping member, a second clamping member, a first limiting member, a second limiting member, a limiting gasket, a first fixing screw, a first spring and a second spring; The wire pressing plate is arranged at the upper end of the first clamping member; The first clamping member is movably arranged in the first sliding groove, and a first limiting step is arranged in the middle of the first clamping member; The limiting gasket is arranged at the lower end of the first clamping member and is fixed by a first fixing screw; The first spring is arranged in the third sliding groove and connected to the first fixing screw, and is used for resetting the first clamping member; The second clamping member is movably arranged in the second slide groove, one end of the second clamping member close to the first clamping member is provided with a U-shaped groove, and the other end protrudes from the second slide groove; the first clamping member is in the first U-shaped groove; The first limiting member is arranged in the U-shaped groove, and both ends are detachably connected to the second clamping member, and can be clamped with the first limiting step to limit the position of the first clamping member; The second limiting member is detachably disposed at one end of the second sliding slot close to the first limiting member; The second spring is arranged in the second sliding groove, one end of which is connected to the first limiting member, and the other end of which is connected to the second limiting member, and is used for resetting the second clamping member.

[0005] Furthermore, the wire pressing module also includes: a button, which is threadedly connected to the upper end of the first clamping member, and a wire pressing plate is arranged below the button.

[0006] Further, the first positioning assembly comprises: a first positioning block and a second positioning block; the first positioning block and the second positioning block are detachably arranged in the first positioning groove; The wire crimping module comprises a plurality of rotary clamping cylinders, the output ends of which are provided with clamping arms, and the rotary clamping cylinders can drive the clamping arms to clamp the connecting wires.

[0007] Furthermore, the position fine-tuning module comprises: a first positioning seat, a longitudinal fine-tuning mechanism, a transverse 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 with the first guide rod or the first slide rail through a locking block; The angle fine-adjusting mechanism is connected to the electric soldering iron and can adjust the angle of the electric soldering iron in two directions; The lateral fine-tuning mechanism is respectively connected with the angle fine-tuning mechanism and the longitudinal fine-tuning mechanism, and is used to adjust the lateral position of the electric soldering iron; The longitudinal fine-adjustment mechanism is connected to the first positioning seat and is used for adjusting the longitudinal position of the electric soldering iron.

[0008] Further, the longitudinal fine-tuning mechanism comprises: a first micrometer, a second positioning seat, a second slide rail and at least one third spring; The second slide rail is arranged on the first positioning seat; The second positioning seat is slidably connected to the first positioning seat through a second slide rail, and a second limiting step is respectively provided at 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 arranged on the top of the second positioning seat, and the micrometer screw of the first micrometer can contact with the top of the first positioning seat; The third spring makes the micrometer screw of the first micrometer close to the first positioning seat, and rotating the first micrometer can drive the second positioning seat to slide on the second slide rail.

[0009] Further, the lateral fine-tuning mechanism comprises: 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 arranged on a 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 seat, and the micrometer screw of the second micrometer can contact one side of the third positioning seat; The fourth spring makes the micrometer screw of the second micrometer close to the third positioning seat, and the third positioning seat can be driven to slide on the second guide rod by rotating the second micrometer.

[0010] Furthermore, the fourth spring is sleeved on the second guide rod and is located between the third positioning seat and the second positioning seat.

[0011] Further, the angle fine-tuning mechanism comprises: a first adjustment plate and a second adjustment plate; The first adjustment plate and the second adjustment plate are vertically connected; the first adjustment plate is detachably connected to the third positioning seat, and the second adjustment plate is detachably connected to the electric soldering iron; The first adjustment plate is provided with a first positioning hole and a first arc hole, and is detachably connected to the third positioning seat by two screws passing through the first positioning hole and the first arc hole respectively, and 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, and is detachably connected to the electric 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 electric soldering iron.

[0012] The welding tool for the solenoid valve terminal according to the embodiment of the present invention can adapt to various types of valve seats and connecting wires, thereby greatly improving the welding efficiency and welding quality.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a structure according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified image of point A; Figure 3 It is a structural schematic diagram of a first positioning fixture, a first positioning assembly and a wire pressing module according to an embodiment of the present invention; Figure 4 for Figure 3 The enlarged view of point B; Figure 5 It is a structural schematic diagram of a first positioning fixture, a first positioning assembly and a wire pressing module according to another embodiment of the present invention; Figure 6 for Figure 5 A top view of Figure 7 for Figure 6 AA section view; Figure 8 is a schematic structural diagram of a first positioning assembly and a wire pressing module according to an embodiment of the present invention; Fig. 9 for Figure 8 A front view of Fig.10 for Fig. 9 BB section view; Fig.11 is a partial structural schematic diagram of a pressing module according to an embodiment of the present invention; Fig.12 is a structural schematic diagram of a position fine-tuning module according to an embodiment of the present invention; Fig.13 for Fig.12 A top view of Fig.14 for Fig.12 Right view of; Fig.15 Schematic diagram of the structure of the angle fine-tuning mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0016] First, combine Figures 1 to 15 A welding tool for a solenoid valve terminal according to an embodiment of the present invention is described, which is used in the production of solenoid valves and has a wide range of application scenarios.

[0017] like Figures 1 to 15 As shown, the welding tool for the solenoid valve terminal of the embodiment of the present invention comprises: A first positioning fixture 1, on which a plurality of first positioning grooves 11 and a plurality of positioning posts 12 are disposed, and the positioning posts 12 are detachably disposed on the first positioning fixture 1 and correspond one-to-one with the plurality of first positioning grooves 11; A first positioning component 2 is disposed in the first positioning groove 11, a second positioning groove 21 and a pair of third positioning grooves 22 are disposed on the first positioning component 2, and the first positioning component 2 is detachably disposed in the first positioning groove 11; The positioning column 12 is used to position the valve seat 7 of the solenoid valve. The top of the positioning column 12 is provided with a chamfer to facilitate the insertion of the valve seat 7. The positioning column 12 of the corresponding size can be installed on the first positioning fixture 1 according to the requirements; 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 wires 8 are bound together in advance, the second positioning groove 21 is selected; when the connecting wires 8 are separated, the third positioning groove 22 is selected; A wire pressing module 3, which 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; A second positioning fixture 4, on which a first guide rod 41 and a first slide rail 42 are provided, and the second positioning fixture 4 is connected to an external driving device; At least one position fine-tuning module 5, the position fine-tuning module 5 is connected to the second positioning fixture 4, and the position of the position fine-tuning module 5 on the second positioning fixture 4 is adjustable; At least one electric soldering iron 6 (existing technology), the electric soldering iron 6 is connected to a position fine-tuning module 5, and the position fine-tuning module 5 is used to adjust the position of the electric soldering iron 6; the electric soldering iron 6 is provided with a tin feeding mechanism 61 (existing technology), and the tin feeding mechanism 61 is used to automatically feed tin to the electric soldering iron 6.

[0018] Further, if Figures 5 to 11 As shown, in this embodiment, a first slide groove 23 and a second slide groove 24 perpendicular to each other are provided in the first positioning assembly 2; a third slide groove 13 corresponding to the first slide groove 23 is provided on the first positioning fixture 1, and the third slide groove 13 is provided below the first slide groove 23 and communicates with the first slide groove 23; The wire pressing module 3 comprises a wire pressing plate 30, a first clamping member 31, a second clamping member 32, a first limiting member 33, a second limiting member 34, a limiting gasket 35, a first fixing screw 36, a first spring 37 and a second spring 38; The wire pressing plate 30 is arranged on the upper end of the first clamping member 31; The first clamping member 31 is movably disposed in the first sliding groove 23, and a first limiting step 311 is disposed in the middle of the first clamping member 31; The limiting gasket 35 is arranged at the lower end of the first clamping member 31 and is fixed by a first fixing screw 36; The first spring 37 is disposed in the third sliding groove 13 and connected to the first fixing screw 36, and is used for resetting the first clamping member 31; The second clamping member 32 is movably disposed in the second slide groove 24 , and a U-shaped groove 321 is disposed at one end of the second clamping member 32 close to the first clamping member 31 , and the first clamping member 31 is in the first U-shaped groove 321 ; The first position-limiting member 33 is disposed in the U-shaped groove 321 , and both ends are detachably connected to the second clamping member 32 , and can be clamped with the first position-limiting step 311 to limit the position of the first clamping member 31 ; The second limiting member 34 is detachably disposed at one end of the second sliding slot 24 close to the first limiting member 33; The second spring 38 is disposed in the second sliding groove 24 , one end of which is connected to the first limiting member 33 , and the other end of which is connected to the second limiting member 34 , and is used for resetting the second clamping member 32 .

[0019] Further, if Figures 7-9 As shown, in this embodiment, the wire pressing module 3 further includes: a button 39 , the button 39 is threadedly connected to the upper end of the first clamping member 31 , and the wire pressing plate 30 is arranged below the button 39 .

[0020] The second spring 38 is in a compressed state in the initial state. When the button 39 is pressed, the first clamping member 31 descends, the first spring 37 is compressed, and the wire pressing plate 30 presses the connecting wire 8. At the same time, the second clamping member 32 moves to the right, and the first limiting member 33 moves to the top of the first limiting step 311 to clamp the first clamping member 31. When the connecting wire 8 needs to be released, the second clamping member 32 is pressed to protrude from one end of the second slide slot 24, so that the first limiting member 33 is disengaged from the first limiting step 311. Under the compression force of the first spring 37, the first clamping member 31 is reset, and the wire pressing plate 30 is disengaged from the connecting wire 8.

[0021] Further, if Figures 1 to 4 As shown, in this embodiment, the first positioning assembly 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 arranged 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; The wire crimping module 3 includes a plurality of rotating clamping cylinders 310 . A clamping arm 3101 is disposed at the output end of the rotating clamping cylinder 310 . The rotating clamping cylinder 310 can drive the clamping arm 3101 to crimp the connecting wire 8 .

[0022] Further, if Figure 1~2 , 12 to 15, in this embodiment, the position fine-tuning module 5 comprises: a first positioning seat 51, a longitudinal fine-tuning mechanism 52, a transverse fine-tuning mechanism 53 and an angle fine-tuning mechanism 54; 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 with the first guide rod 41 or the first slide rail 42 through a locking block; The angle fine-adjusting mechanism 54 is connected to the electric soldering iron 6 and can adjust the angle of the electric soldering iron 6 in two directions; The lateral fine-tuning mechanism 53 is respectively connected to the angle fine-tuning mechanism 54 and the longitudinal fine-tuning mechanism 52, and is used to adjust the lateral position of the electric soldering iron 6; The longitudinal fine-adjustment mechanism 52 is connected to the first positioning seat 51 and is used to adjust the longitudinal position of the electric soldering iron 6 .

[0023] Further, if Figure 1 , 12 As shown in Figure 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; The second slide rail 523 is disposed on the first positioning seat 51; The second positioning seat 522 is slidably connected to the first positioning seat 51 through the second slide rail 523. The first positioning seat 51 is provided with a second limiting step 511 at both ends. The second limiting step 511 is used to limit the travel of the second positioning seat 522. 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; The first micrometer 521 is disposed on the 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; The third spring 524 makes the micrometer screw of the first micrometer 521 close to the first positioning seat 51, and 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 is extended, the second positioning seat 522 moves upward and the third spring 524 is extended; when the micrometer screw of the first micrometer 521 is shortened, the second positioning seat 522 moves downward under the pulling force of the third spring 524.

[0024] Further, if Figure 2 , 12As shown in Figure 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; One end of a pair of second guide rods 532 is fixedly connected to the second positioning seat 522, and the other end is fixedly connected to the fourth positioning seat 533, and there is a certain distance between the two second guide rods 532; The third positioning seat 531 is slidably disposed on a pair of second guide rods 532 and can slide along the second guide rods 532; 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; 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; The fourth spring 535 enables the micrometer screw of the second micrometer 534 to be in close contact with the third positioning seat 531 , and the third positioning seat 531 can be driven to slide on the second guide rod 532 by rotating the second micrometer 534 .

[0025] Further, if Fig.14 As shown, in this embodiment, the fourth spring 535 is sleeved on the second guide rod 532 and is located between the third positioning seat 531 and the second positioning seat 522; when the micrometer screw of the second micrometer 534 is extended, 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 is shortened, the third positioning seat 531 moves to the left under the action of the fourth spring 535.

[0026] Further, if Figures 12 to 15 As shown, in this embodiment, the angle fine-tuning mechanism 54 includes: a first adjustment plate 541 and a second adjustment plate 542; The first adjustment plate 541 and the second adjustment plate 542 are vertically connected; the first adjustment plate 541 is detachably connected to the third positioning seat 531, and the second adjustment plate 542 is detachably connected to the electric soldering iron 6; The first adjustment plate 541 is provided with a first positioning hole 5411 and a first arc hole 5412, and 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, and the first arc hole 5412 can adjust the angle of the first adjustment plate 541; The second adjustment plate 542 is provided with a second positioning hole 5421 and a second arc hole 5422 , and is detachably connected to the electric 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 electric soldering iron 6 .

[0027] Working principle: When in use, first put the valve seat 7 on the positioning column 12, then put the corresponding connecting wire 8 into the second positioning groove 21 or the third positioning groove 22, and the wire pressing module 3 presses the connecting wire 8; then, adjust the posture of the electric soldering iron 6 through the position fine-tuning module 5, and then the external drive device drives the electric soldering iron 6 to gradually approach and contact the place where the connecting wire 8 and the valve seat 7 terminal contact to start trial welding; after one welding is completed, the worker checks the welding quality, and if it is unqualified, continue to adjust the posture of the electric soldering iron 6 through the position fine-tuning module 5 until the trial welding quality is qualified, and then start batch welding. After the welding is completed, the electric soldering iron 6 is withdrawn, the wire pressing module 3 is reset, the valve seat 7 and the connecting wire 8 are removed, and the next batch of welding is continued.

[0028] Above, refer to Figures 1 to 15 The welding tooling of the solenoid valve terminal according to the embodiment of the present invention is described, which can adapt to various types of valve seats 7 and connecting wires 8, and greatly improves the welding efficiency and welding quality.

[0029] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A welding tool for a solenoid valve terminal, characterized in that: Include: A first positioning jig, wherein the first positioning jig is provided with a plurality of first positioning grooves and a plurality of positioning columns, wherein the positioning columns are detachably provided on the first positioning jig and correspond one-to-one with the plurality of first positioning grooves; A first positioning component is arranged in the first positioning groove, a second positioning groove and a pair of third positioning grooves are arranged on the first positioning component, and the first positioning component is detachably arranged in the first positioning groove; The positioning column 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, which is arranged adjacent to the first positioning groove and is used for pressing the connecting wire; A second positioning fixture, wherein 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, the position fine-tuning module is connected to the second positioning fixture, and the position of the module on the second positioning fixture is adjustable; At least one electric soldering iron, the electric soldering iron is connected to the position fine-tuning module, the position fine-tuning module is used to adjust the position of the electric soldering iron; the electric soldering iron is provided with a tin feeding mechanism, the tin feeding mechanism is used to automatically feed tin to the electric soldering iron.

2. The welding tool for the solenoid valve terminal according to claim 1, characterized in that: The first positioning assembly is provided with a first slide groove and a second slide groove which are perpendicular to each other; the first positioning fixture is provided with a third slide groove which corresponds to the first slide groove, and the third slide groove is arranged below the first slide groove and is connected to the first slide groove; The wire pressing module comprises a wire pressing plate, a first clamping member, a second clamping member, a first limiter, a second limiter, a limiter gasket, a first fixing screw, a first spring and a second spring; The wire pressing plate is arranged at the upper end of the first clamping member; The first clamping member is movably disposed in the first sliding groove, and a first limiting step is disposed in the middle of the first clamping member; The limiting gasket is arranged at the lower end of the first clamping member and is fixed by a first fixing screw; The first spring is arranged in the third sliding groove and connected to the first fixing screw, and is used for resetting the first clamping member; The second clamping member is movably arranged in the second sliding groove, a U-shaped groove is arranged at one end of the second clamping member close to the first clamping member, and the first clamping member is in the first U-shaped groove; The first limiting member is disposed in the U-shaped groove, and both ends are detachably connected to the second clamping member, and can be clamped with the first limiting step to limit the position of the first clamping member; The second limiting member is detachably arranged at one end of the second sliding slot close to the first limiting member; The second spring is arranged in the second sliding groove, one end of which is connected to the first limiting member, and the other end of which is connected to the second limiting member, and is used for resetting the second clamping member.

3. The welding tool for the solenoid valve terminal according to claim 2, characterized in that: The wire pressing module further comprises: a button, the button is threadedly connected to the upper end of the first clamping member, and the wire pressing plate is arranged below the button.

4. The welding tool for the solenoid valve terminal according to claim 1, characterized in that: The first positioning assembly comprises: a first positioning block and a second positioning block; the first positioning block and the second positioning block are detachably disposed in the first positioning groove; The wire pressing module comprises a plurality of rotating clamping cylinders, and a clamping arm is arranged at the output end of the rotating clamping cylinder. The rotating clamping cylinder can drive the clamping arm to press the connecting wire.

5. The welding tool for the solenoid valve terminal according to claim 1, characterized in that: The position fine-tuning module comprises: a first positioning seat, a longitudinal fine-tuning mechanism, a transverse 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 with the first guide rod or the first slide rail through a locking block; The angle fine-adjusting mechanism is connected to the electric soldering iron and can adjust the angle of the electric soldering iron in two directions; The lateral fine-tuning mechanism is respectively connected to the angular fine-tuning mechanism and the longitudinal fine-tuning mechanism, and is used to adjust the lateral position of the electric soldering iron; The longitudinal fine-tuning mechanism is connected to the first positioning seat and is used to adjust the longitudinal position of the electric soldering iron.

6. The welding tool for the solenoid valve terminal according to claim 5, characterized in that: The longitudinal fine-tuning mechanism comprises: a first micrometer, a second positioning seat, a second slide rail and at least one third spring; The second slide rail is arranged on the first positioning seat; The second positioning seat is slidably connected to the first positioning seat via the second slide rail, and a second limiting step is respectively provided at the upper and lower ends of the first positioning seat for limiting 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 arranged on the top of the second positioning seat, and the micrometer screw of the first micrometer can contact with the top of the first positioning seat; The third spring enables the micrometer screw of the first micrometer to be closely attached to 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 tool for the solenoid valve terminal according to claim 6, characterized in that: The lateral fine-tuning mechanism comprises: 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 the 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 seat, and the micrometer screw of the second micrometer can contact one side of the third positioning seat; The fourth spring makes the micrometer screw of the second micrometer close to the third positioning seat, and rotating the second micrometer can drive the third positioning seat to slide on the second guide rod.

8. The welding tool for the solenoid valve terminal according to 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 tool for the solenoid valve terminal according to claim 7, characterized in that: The angle fine-tuning mechanism comprises: a first adjustment plate and a second adjustment plate; The first adjustment plate and the second adjustment plate are vertically connected; the first adjustment plate is detachably connected to the third positioning seat, and the second adjustment plate is detachably connected to the electric soldering iron; The first adjustment plate is provided with a first positioning hole and a first arc hole, and is detachably connected to the third positioning seat by two screws passing through the first positioning hole and the first arc hole respectively, and 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, and is detachably connected to the electric soldering iron by two screws passing through the second positioning hole and the second arc hole respectively, and the second arc hole can adjust the angle of the electric soldering iron.

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