A transformer tin dipping jig and a tin dipping method

Abstract

The application discloses a transformer tin immersion jig and a tin immersion method. The transformer comprises a main body and an L-shaped first pin connected with each other. The jig comprises a positioning seat, a pressing block assembly and a stop block assembly. The positioning seat is provided with a positioning area for placing the main body. The pressing block assembly comprises a pressing plate and a pressing structure connected with each other. The pressing plate is connected with the upper end of the positioning seat through the pressing structure and is used for pressing the main body in the positioning area. The stop block assembly comprises a stop plate and a locking structure connected with each other. The stop plate is connected with the side end of the positioning seat through the locking structure. A plurality of first insertion holes are defined between the stop plate and the positioning seat. The first insertion holes allow the single first pin to pass through. The locking structure switches the stop plate between a locked state and an unlocked state. In the locked state, the stop plate is close to the positioning area and can abut against the transformer in the positioning area. In the unlocked state, the stop plate is away from the positioning area. The application can effectively prevent the penetration of tin material and flux into the transformer, and improve the tin immersion yield of the transformer.

Description

Technical Field

[0001] This invention relates to the field of transformer tinning technology, and particularly to a transformer tinning fixture and tinning method. Background Technology

[0002] In transformer manufacturing, lead tinning is a critical process affecting product quality. The purpose of lead tinning is to achieve a reliable electrical connection between the enameled wire and the lead, providing a clean contact surface for subsequent soldering. Currently, the industry mainly uses traditional methods such as manual operation and general-purpose tray fixtures for processing transformer leads. These methods have significant shortcomings in terms of efficiency and accuracy. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the first aspect of the present invention provides a transformer tinning fixture that can improve the yield of transformer tinning.

[0004] A second aspect of the present invention also provides a method for tinning a transformer.

[0005] According to a first aspect of the present invention, a transformer tin-dipping fixture includes a transformer comprising a connected body and an L-shaped first pin. The fixture includes a positioning seat, a pressure block assembly, and a stop block assembly. The positioning seat has a positioning area for placing the body. The pressure block assembly includes a connected pressure plate and a clamping structure. The pressure plate is connected to the upper end of the positioning seat via the clamping structure and is used to press the body into the positioning area. The stop block assembly includes a connected baffle and a locking structure. The baffle is connected to the side end of the positioning seat via the locking structure. A plurality of first through holes are defined between the baffle and the positioning seat. The first through holes allow a single first pin to pass through. The locking structure is used to switch the baffle between a locked state and an unlocked state. When the baffle is in the locked state, the baffle is close to the positioning area and can abut against the transformer in the positioning area. When the baffle is in the unlocked state, the baffle is away from the positioning area.

[0006] A transformer tin-dipping fixture according to an embodiment of the present invention has at least the following technical effects:

[0007] In the transformer tinning fixture of this application, the transformer is first placed on the positioning area of ​​the positioning seat, and then the pressure plate of the pressure block assembly is placed on the upper end of the positioning seat. The pressure plate is then pressed onto the positioning seat by the pressing structure of the pressure block assembly, so that the pressure plate presses and fixes the transformer in the positioning area onto the positioning seat. Then, the baffle is switched from the unlocked state to the locked state by the locking structure, so that the baffle is close to the positioning area and close to the side of the transformer in the positioning area. At this time, each of the first pins of the transformer passes through the multiple first through holes defined between the baffle and the positioning seat and extends out of the transformer tinning fixture. Then, the tinning fixture is placed in the tinning machine. After the tinning of the transformer pins is completed, the pressure plate is removed from the positioning seat, and the baffle is switched from the locked state to the unlocked state by the locking structure, so that the baffle is away from the positioning area. At this time, the transformer can be smoothly removed from the positioning seat. As can be seen from the above, the transformer tinning fixture of this application, through the positioning seat and baffle, closely fits the surrounding structure of the transformer pins, which can effectively shield the internal coil of the transformer, thereby effectively preventing the penetration of solder and flux, thus improving the tinning yield of the transformer. Furthermore, by inserting a single pin through a single first through hole, the pins can be precisely isolated, while the gap between two adjacent first pins can be reduced, thereby reducing the probability of solder splashing into the transformer body through the gap between two adjacent first pins during the tinning process.

[0008] According to a first aspect of the present invention, a transformer tin-dipping fixture has a locking structure comprising a first latching member and a second latching member. The first latching member is connected to a baffle and is slidably disposed on a positioning seat. The second latching member is slidably disposed on the positioning seat. The first latching member has a first latching groove. When the baffle is in a locked state, the second latching member passes through the first latching groove. When the baffle is in an unlocked state, the second latching member disengages from the first latching groove.

[0009] According to a first aspect embodiment of the present invention, a transformer tin-dipping fixture includes a locking structure further comprising a first elastic connector, which is connected to a baffle and a positioning seat respectively, and is used to provide an elastic force to the baffle away from the positioning seat.

[0010] According to a first aspect of the present invention, a transformer tin-dipping fixture includes a locking structure further comprising a second elastic connector, the second elastic connector being connected to a second snap-fit ​​member and a positioning seat respectively, and being used to provide an elastic force for holding the second snap-fit ​​member snapped into the first snap-fit ​​groove.

[0011] According to a first aspect of the present invention, a transformer tin-immersion fixture includes a clamping structure comprising a clamping block and a third elastic connector. The clamping block includes a horizontally distributed hinge portion and a clamping portion. A vertically extending rotating shaft is provided on a positioning seat. The hinge portion is rotatably sleeved on the rotating shaft and is slidably disposed in the vertical direction. Under the action of an external force, the hinge portion can rotate so that the clamping portion is located directly above the pressure plate or on a horizontal side. The third elastic connector is connected to the clamping block and the positioning seat respectively, and is used to provide pressure for the clamping block to press down on the pressure plate.

[0012] According to a first aspect of the present invention, a transformer tin-dipping fixture is provided, wherein the transformer further includes a plurality of second pins, and the lower end of the positioning base is provided with a plurality of second through holes communicating with the positioning area, the second through holes allowing the second pins to pass through.

[0013] According to a first aspect of the present invention, a transformer tin-dipping fixture is provided at the lower end of the positioning seat, and a second insertion hole is provided at the bottom of the insertion groove.

[0014] According to a first aspect of the present invention, a transformer tin-dipping fixture is provided, wherein the transformer further includes a flying wire connected to the main body, a positioning seat is provided with a positioning groove communicating with a positioning area, the positioning groove allows the flying wire to pass through, and a pressure plate is provided with an abutment protrusion, the abutment protrusion being able to cooperate with the positioning groove to press the flying wire.

[0015] According to a first aspect of the present invention, a transformer tin-dipping fixture has a sloping wall in the positioning groove, and a guide slope adapted to the positioning groove wall is provided on the abutment protrusion. The guide slope is used to guide the abutment protrusion to abut the flying wire in the positioning groove.

[0016] A transformer tinning method according to a second aspect of the present invention is implemented using a transformer tinning fixture as described in the first aspect of the present invention. The transformer tinning method includes the following steps:

[0017] Place the main body of the transformer in the positioning area of ​​the positioning seat, and let the transformer's flying wire pass through the positioning slot of the positioning seat.

[0018] The transformer body is fixed in the positioning area by the pressure plate of the pressure block assembly, and the transformer's flying wire is fixed in the positioning groove.

[0019] The baffle and positioning seat of the stop block assembly together define a plurality of first through holes, and each first pin of the transformer passes through a first through hole;

[0020] The flying wires on the transformer tin-dipping fixture are stripped using a laser stripping machine;

[0021] The flying wires and first pins on the transformer tinning fixture are tinned using a tinning machine.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure of a transformer tin-dipping fixture according to one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram showing the positional structure of the positioning seat, pressure block assembly, and stop block;

[0026] Figure 3 for Figure 1 A schematic diagram of the exploded structure of the transformer tin-dipping fixture;

[0027] Figure 4 for Figure 2 A schematic diagram of the connection structure between the positioning seat and the stop assembly;

[0028] Figure 5 for Figure 2 A schematic diagram of the connection structure between the positioning seat and the pressure block assembly;

[0029] Figure 6 for Figure 1 A schematic diagram of the transformer tin-dipping fixture from another perspective;

[0030] Figure 7 This is a flowchart of a transformer tinning method according to one embodiment of the present invention.

[0031] Figure label:

[0032] Transformer 100, main body 110, first pin 120, second pin 130, flying wire 140;

[0033] Positioning seat 200, positioning area 200a, second through hole 200b, drainage groove 200c, positioning groove 200d, rotating shaft 210;

[0034] The components include: a pressure block assembly 300, a pressure plate 310, an abutment protrusion 311, a guide slope 311a, a pressing structure 320, a pressing block 321, a hinge part 321a, a pressing part 321b, and a third elastic connector 322.

[0035] The block assembly 400, the baffle 410, the first through hole 410a, the locking structure 420, the first snap-fit ​​member 421, the first snap-fit ​​groove 421a, the second snap-fit ​​member 422, the first elastic connector 423, and the second elastic connector 424. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, front, back, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0038] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0039] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0040] The following is for reference. Figures 1 to 6 A transformer tin-dipping fixture according to a first aspect of the present invention will be described in detail.

[0041] refer to Figure 1 and Figure 2According to a first aspect of the present invention, a transformer tin-dipping fixture includes a transformer 100 comprising a connected body 110 and an L-shaped first pin 120. The fixture includes a positioning seat 200, a pressing block assembly 300, and a stop block assembly 400. The positioning seat 200 has a positioning area 200a for placing the body 110. The pressing block assembly 300 includes a connected pressing plate 310 and a pressing structure 320. The pressing plate 310 is connected to the upper end of the positioning seat 200 through the pressing structure 320, and the pressing plate 310 is used to press the body 110 into the positioning area 200a. The stop block assembly 400 includes a connected stop plate 400. 10 and locking structure 420, baffle 410 is connected to the side end of positioning seat 200 through locking structure 420, a plurality of first through holes 410a are defined between baffle 410 and positioning seat 200, the first through holes 410a allow a single first pin 120 to pass through, locking structure 420 is used to switch baffle 410 between locked state and unlocked state, wherein, when baffle 410 is in locked state, baffle 410 is close to positioning area 200a and can abut against transformer 100 in positioning area 200a, and when baffle 410 is in unlocked state, baffle 410 is away from positioning area 200a.

[0042] In the transformer tin-dipping fixture of this application, the transformer 100 is first placed on the positioning area 200a of the positioning seat 200. Then, the pressure plate 310 of the pressure block assembly 300 is placed on the upper end of the positioning seat 200. The pressure plate 310 is then pressed onto the positioning seat 200 by the pressing structure 320 of the pressure block assembly 300, so that the pressure plate 310 presses and fixes the transformer 100 in the positioning area 200a onto the positioning seat 200. Then, the locking structure 420 switches the baffle 410 from the unlocked state to the locked state, so that the baffle 410 approaches the positioning area 200a and is tightly attached to the positioning area 200a. On the side of the transformer 100 inside a, each of the first pins 120 of the transformer 100 passes through a plurality of first insertion holes 410a defined between the baffle 410 and the positioning seat 200 and extends out of the transformer tin-dipping fixture. Then the tin-dipping fixture is placed in the tin-dipping machine. After the pins of the transformer 100 are tin-dipped, the pressure plate 310 is removed from the positioning seat 200, and the baffle 410 is switched from the locked state to the unlocked state by the locking structure 420, so that the baffle 410 is away from the positioning area 200a. At this time, the transformer 100 can be smoothly removed from the positioning seat 200. As can be seen from the above, the transformer tinning fixture of this application, through the positioning seat 200 and the baffle 410, closely fits the surrounding structure of the transformer 100 pins, which can effectively shield the internal coil of the transformer 100, thereby effectively preventing the penetration of solder and flux, thus improving the tinning yield of the transformer 100. Furthermore, by inserting a single pin through a single first through hole 410a, the pins can be precisely isolated, while the gap between two adjacent first pins 120 can be reduced, thereby reducing the probability that solder will splash into the transformer 100 body 110 through the gap between two adjacent first pins 120 during the tinning process.

[0043] refer to Figures 2 to 4 In some embodiments of the present invention, the locking structure 420 includes a first latching member 421 and a second latching member 422. The first latching member 421 is connected to the baffle 410 and is slidably disposed on the positioning seat 200. The second latching member 422 is slidably disposed on the positioning seat 200. The first latching member 421 is provided with a first latching groove 421a. When the baffle 410 is in the locked state, the second latching member 422 passes through the first latching groove 421a. When the baffle 410 is in the unlocked state, the second latching member 422 disengages from the first latching groove 421a.

[0044] Understandably, the first latching member 421 is fixed to the back of the baffle 410 and can slide in the positioning seat 200. The second latching member 422 is slidably mounted on the positioning seat 200. When the baffle 410 is pushed to the locked state, it can drive the first latching member 421 to slide on the positioning seat 200 so that the second latching member 422 can pass through the first latching slot 421a on the first latching member 421. The baffle 410 can remain in the locked state. Therefore, during the tinning process, the baffle 410 can always be in close contact with the area around the pin of the transformer 100. By pushing the second latching member 422 to slide on the positioning seat 200 and disengage from the first latching slot 421a, the baffle 410 can be switched from the locked state to the unlocked state. At this time, the first latching member 421 can slide freely, and the baffle 410 can move away from the positioning seat 200.

[0045] like Figures 2 to 4 As shown, in some embodiments, the locking structure 420 further includes a first elastic connector 423, which connects the baffle 410 and the positioning seat 200 respectively, and provides an elastic force to the baffle 410 to move away from the positioning seat 200. It is understood that by providing the first elastic connector 423, the operator applies an external force to the baffle 410 to overcome the elastic force of the first elastic connector 423, thereby moving it closer to the positioning seat 200 to switch from the unlocked state to the locked state. When it is necessary to switch the baffle 410 from the locked state to the unlocked state, by pushing the second latching member 422 away from the first latching groove 421a, the baffle 410 moves away from the positioning seat 200 under the elastic force provided by the first elastic connector 423, thereby causing the first latching member 421 to slide away from the positioning seat 200. This prevents the second latching member 422 from entering the first latching groove 421a, thus allowing the baffle 410 to remain in the unlocked state for an extended period.

[0046] like Figures 2 to 4 As shown, in some embodiments, the locking structure 420 further includes a second elastic connector 424, which connects the second latching member 422 and the positioning seat 200 respectively, and provides an elastic force to keep the second latching member 422 engaged in the first latching groove 421a. It is understood that by providing the second elastic connector 424, when the operator pushes the baffle 410 to slide the first latching member 421 to the locking position, the elastic force of the second elastic connector 424 causes the second latching member 422 to automatically engage in the first latching groove 421a of the first latching member 421, thus allowing the baffle 410 to remain in a locked state for a long time. When it is necessary to switch the baffle 410 from the locked state to the unlocked state, an external force is applied to the second latching member 422 to overcome the elastic force of the second elastic connector 424, causing the second latching member 422 to disengage from the first latching groove 421a, greatly improving clamping efficiency.

[0047] refer to Figure 1 , Figure 3 and Figure 5 In some embodiments of the present invention, the pressing structure 320 includes a pressing block 321 and a third elastic connector 322. The pressing block 321 includes a horizontally distributed hinge portion 321a and a pressing portion 321b. The positioning seat 200 is provided with a vertically extending rotating shaft 210. The hinge portion 321a is rotatably sleeved on the rotating shaft 210 and is slidably disposed in the vertical direction. Under the action of external force, the hinge portion 321a can rotate so that the pressing portion 321b is located directly above or on the horizontal side of the pressure plate 310. The third elastic connector 322 is connected to the pressing block 321 and the positioning seat 200 respectively, and is used to provide pressure for the pressing block 321 to press down on the pressure plate 310.

[0048] Understandably, when the pressure plate 310 is placed on the positioning seat 200, the clamping block 321 is rotated around the pivot 210 so that the clamping part 321b of the clamping block 321 can rotate around the hinge part 321a to be directly above the pressure plate 310. After the external force applied to the clamping block 321 is removed, the clamping block 321 can automatically clamp the pressure plate 310 with the elastic force provided by the third elastic connector 322. When it is necessary to disassemble the pressure plate 310, the clamping block 321 is rotated around the pivot 210 so that the clamping part 321b of the clamping block 321 can rotate around the hinge part 321a to one side of the pressure plate 310, thereby providing sufficient space for disassembly of the pressure plate 310.

[0049] In some embodiments of the present invention, a positioning pin is provided on the positioning seat 200 and a positioning hole is provided on the pressure plate 310. The positioning pin passes through the positioning hole. Through the cooperation of the positioning pin and the positioning hole, the pressure plate 310 can be quickly and accurately assembled on the positioning seat 200.

[0050] refer to Figure 2 and Figure 6 In some embodiments of the present invention, the transformer 100 further includes a plurality of second pins 130, and the lower end of the positioning base 200 is provided with a plurality of second through holes 200b communicating with the positioning area 200a, the second through holes 200b allowing the second pins 130 to pass through. It is understood that by adding second through holes 200b communicating with the positioning area 200a at the lower end of the positioning base 200 to accommodate the second pins 130, the tinning of all pins of the transformer 100 can be completed in a single clamping operation, greatly improving the tinning efficiency.

[0051] like Figure 6As shown, in some embodiments, the lower end of the positioning base 200 is provided with a drainage groove 200c, and the second insertion hole 200b passes through the bottom of the drainage groove 200c. It can be understood that by machining the drainage groove 200c at the lower end of the positioning base 200, and by having the second insertion hole 200b penetrate the bottom of the drainage groove 200c, excess molten solder dripping during tinning is guided along the drainage groove 200c to a collection container, thereby reducing solder ball residue at the root of the pin and making the tinned surface of the pin smoother and more uniform.

[0052] refer to Figure 2 and Figure 3 In some embodiments of the present invention, the transformer 100 further includes a flying wire 140 connected to the main body 110. The positioning seat 200 is provided with a positioning groove 200d communicating with the positioning area 200a. The positioning groove 200d allows the flying wire 140 to pass through. The pressure plate 310 is provided with an abutment protrusion 311, which can cooperate with the positioning groove 200d to press the flying wire 140. It can be understood that when the transformer main body 110 is placed in the positioning area 200a of the positioning seat 200, the flying wire 140 is placed in the positioning groove 200d on the positioning seat 200. Then, the pressure plate 310 is placed on the upper end of the positioning seat 200. The abutment protrusion 311 of the pressure plate 310 cooperates with the positioning groove 200d to clamp and fix the flying wire 140 of the transformer 100, so as to facilitate the subsequent laser stripping and tinning of the flying wire 140.

[0053] like Figure 3 As shown, in some embodiments, the wall of the positioning groove 200d is inclined, and the abutment protrusion 311 is provided with a guide inclined surface 311a adapted to the wall of the positioning groove 200d. The guide inclined surface 311a is used to guide the abutment protrusion 311 to abut the flying wire 140 in the positioning groove 200d. It can be understood that by setting the wall of the positioning groove 200d as inclined and providing the guide inclined surface 311a on the abutment protrusion 311, when the pressure plate 310 is pressed down, the guide inclined surface 311a slides along the groove wall to automatically correct its position, thereby achieving precise pressing of the flying wire 140.

[0054] Specifically, the positioning groove 200d is a V-shaped groove. The V-shaped groove structure makes it easier to position the flying wire 140, and the abutment protrusion 311 is not easily eccentric when passing through the positioning groove 200d, thereby ensuring the clamping effect of the pressure plate 310 and the positioning seat 200 on the flying wire 140.

[0055] The following is for reference Figure 7 A method for tinning a transformer 100 according to a second aspect embodiment of the present invention will be described in detail.

[0056] refer to Figure 7According to a second aspect embodiment of the present invention, a method for tinning a transformer 100 is implemented using a transformer tinning fixture as described in the first aspect embodiment above. The method for tinning a transformer 100 includes the following steps:

[0057] Step S100: Place the main body 110 of the transformer 100 in the positioning area 200a of the positioning seat 200, and make the flying wire 140 of the transformer 100 pass through the positioning groove 200d of the positioning seat 200.

[0058] Step S200: The main body 110 of the transformer 100 is fixed in the positioning area 200a by the pressure plate 310 of the pressure block assembly 300, and the flying wire 140 of the transformer 100 is fixed in the positioning groove 200d.

[0059] Step S300: The baffle 410 of the stop assembly 400 and the positioning seat 200 together define a plurality of first through holes 410a, and each first pin 120 of the transformer 100 is passed through a first through hole 410a.

[0060] Step S400: Strip the wires 140 on the transformer tin-dipping fixture using a laser stripping machine;

[0061] Step S500: The flying wire 140 and the first pin 120 on the transformer tinning fixture are tinned using a tinning machine.

[0062] Understandably, the transformer 100 body 110 is placed within the positioning area 200a of the positioning seat 200, and the flying wire 140 is inserted into the positioning groove 200d. The contour of the positioning area 200a restricts the horizontal movement of the transformer 100 and ensures the initial alignment of the flying wire 140. Then, the pressure plate 310 is placed on the positioning seat 200. When the pressure plate 310 presses down, it clamps the flying wire 140 by engaging with the positioning groove 200d through the abutment protrusion 311. At the same time, the clamping structure 320 provides uniform downward pressure, preventing the transformer 100 from shifting during tinning and effectively preventing the pins from protruding due to the warping of parts of the transformer 100 structure. The possibility of inconsistent lengths is addressed; then, the baffle 410 is pushed to the locked state, allowing the first pin 120 to pass through the first insertion hole 410a. The inner side of the baffle 410 abuts against the side of the transformer 100, preventing molten solder from splashing and ensuring that all pins are immersed in solder to a consistent depth. The transformer soldering fixture is then placed in a laser stripping machine, which strips the flying wire 140 of the transformer 100. The fixture's fixing function ensures precise stripping, avoiding uneven stripping lengths or copper wire damage caused by traditional manual operation. The entire fixture is then placed in the soldering machine, enabling soldering of the flying wire 140 and the first pin 120. The soldering method of this application, by employing the soldering fixture of the first aspect embodiment, achieves laser stripping of the flying wire 140 of the transformer 100 and soldering of the flying wire 140 and the pin in a single clamping operation, thereby saving product handling time and greatly improving soldering efficiency.

[0063] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A transformer tin-dipping fixture, characterized in that, The transformer includes a connected body and an L-shaped first pin, and the fixture includes: A positioning seat, wherein the positioning seat is provided with a positioning area for placing the main body; A pressure block assembly, comprising a pressure plate and a clamping structure connected together, wherein the pressure plate is connected to the upper end of the positioning seat through the clamping structure, and the pressure plate is used to press the main body into the positioning area; A stop assembly includes a connected baffle and a locking structure. The baffle is connected to the side end of the positioning seat via the locking structure. A plurality of first through holes are defined between the baffle and the positioning seat, allowing a single first pin to pass through. The locking structure switches the baffle between a locked state and an unlocked state. When the baffle is in the locked state, it is close to the positioning area and can abut against the transformer within the positioning area. When the baffle is in the unlocked state, it is away from the positioning area. The locking structure includes a first snap-fit ​​member, a second snap-fit ​​member, a first elastic connector, and a second elastic connector. The first snap-fit ​​member is connected to the baffle and slidably disposed on the positioning seat. The second snap-fit ​​member is slidably disposed on the positioning seat. The first snap-fit ​​member is provided with a first snap-fit ​​groove. The first elastic connector is connected to the baffle and the positioning seat respectively and is used to provide an elastic force to the baffle away from the positioning seat. The second elastic connector is connected to the second snap-fit ​​member and the positioning seat respectively and is used to provide an elastic force to keep the second snap-fit ​​member snapped into the first snap-fit ​​groove. When the baffle is in the locked state, the second snap-fit ​​member passes through the first snap-fit ​​groove. When the baffle is in the unlocked state, the second snap-fit ​​member disengages from the first snap-fit ​​groove.

2. The transformer tin-dipping fixture according to claim 1, characterized in that, The clamping structure includes a clamping block and a third elastic connector. The clamping block includes a horizontally distributed hinge portion and a clamping portion. The positioning seat is provided with a vertically extending rotating shaft. The hinge portion is rotatably sleeved on the rotating shaft and is slidably disposed in the vertical direction. Under the action of external force, the hinge portion can rotate so that the clamping portion is located directly above the pressure plate or on a horizontal side. The third elastic connector is connected to the clamping block and the positioning seat respectively, and is used to provide pressure for the clamping block to press down on the pressure plate.

3. The transformer tin-dipping fixture according to claim 1, characterized in that, The transformer also includes a plurality of second pins, and the lower end of the positioning base is provided with a plurality of second through holes communicating with the positioning area, the second through holes allowing the second pins to pass through.

4. A transformer tin-dipping fixture according to claim 3, characterized in that, The lower end of the positioning seat is provided with a drainage groove, and the second insertion hole passes through the bottom of the drainage groove.

5. A transformer tin-dipping fixture according to claim 1, characterized in that, The transformer also includes a flying wire connected to the main body. The positioning seat is provided with a positioning groove that communicates with the positioning area. The positioning groove allows the flying wire to pass through. The pressure plate is provided with an abutment protrusion that can cooperate with the positioning groove to press the flying wire.

6. A transformer tin-dipping fixture according to claim 5, characterized in that, The wall of the positioning groove is inclined, and the abutting protrusion is provided with a guide inclined surface that adapts to the wall of the positioning groove. The guide inclined surface is used to guide the abutting protrusion to abut the flying wire in the positioning groove.

7. A method for tinning a transformer, characterized in that, The transformer tinning method is implemented using the transformer tinning fixture as described in claim 5 or 6, and includes the following steps: Place the main body of the transformer in the positioning area of ​​the positioning seat, and pass the transformer's flying wire through the positioning slot of the positioning seat. The transformer body is fixed in the positioning area by the pressure plate of the pressure block assembly, and the transformer's flying wire is fixed in the positioning groove. The baffle and the positioning seat of the block assembly together define a plurality of first through holes, and each of the first pins of the transformer passes through one of the first through holes; The flying wires on the transformer tin-dipping fixture are stripped using a laser stripping machine; The flying wire and the first pin on the transformer tinning fixture are tinned using a tinning machine.

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