A switching power supply transformer and a wire clamping device, and its usage method

Abstract

A switching power supply transformer, a wire pressing device, and its usage method are disclosed, belonging to the field of transformer technology. This invention addresses problems in existing transformers such as the inability of the protective casing to secure the lead ends, insufficient heat dissipation, easy failure of the wire pressing spring, and easy breakage during winding. In the switching power supply transformer section, a positioning structure is set in the base. During protective casing installation, a pin-driven trapezoidal push block pushes a moving clamping block to engage with a fixed clamping block to hold the lead ends, ensuring welding stability. The wire pressing device uses a gravity-driven lever mechanism with a load-bearing box, causing the wire pressing wheel and rotating wheel to press the wire through a limiting annular groove. The clamping force is adjusted by adding or removing counterweights to prevent spring failure. During winding, a hydraulic system links a rubber rotating roller and a rectangular cylinder, automatically lifting the wire as the coil expands outward, maintaining horizontal tension. A reciprocating screw drives a moving seat to achieve uniform winding. This significantly improves transformer assembly efficiency and operational reliability, and is suitable for electronic equipment and industrial control fields.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a switching power supply transformer, a wire clamping device, and a method of using the same. Background Technology

[0002] Switching power supply transformers are core components of switching power supply systems, providing voltage transformation, energy transfer, and electrical isolation. Their design must balance efficiency, size, cost, and reliability. Due to their advantages such as small size, high efficiency, and low cost, switching power supply transformers are widely used in electronic equipment, communication and network equipment, and industrial control and automation.

[0003] In the existing technology, the following defects still exist in the production and assembly process of transformers:

[0004] 1. To ensure safe use, a protective shell is usually installed on the outer wall of the transformer and fixed to the base or circuit board. However, the protective shell is only installed by bolts or adhesive, which cannot fix the lead end, resulting in the need for additional positioning during subsequent soldering.

[0005] 2. Although the protective casing can protect the transformer, the internal heat cannot be effectively dissipated during operation, resulting in temperature rise that affects stability and lifespan;

[0006] 3. When winding, the coil needs to be pressed tightly. In the traditional combination of spring and arc-shaped pressure plate, the spring is prone to failure due to the fatigue characteristics of metal. After long-term use, it is easy for the wire to jump or deviate, which affects the performance.

[0007] 4. During the winding process, as the number of coil turns increases, an angle is formed between the conductor and the transformer frame, which may cause the conductor to become taut or even break.

[0008] To address the aforementioned issues, this invention proposes a switching power supply transformer and a wire clamping device, as well as a method for using them. Summary of the Invention

[0009] The purpose of this invention is to solve the shortcomings of existing protective shells, such as the inability to fix the transformer lead ends during installation, the inability to effectively dissipate heat from the transformer container, the inability of the spring force to maintain the wire pressing effect for a long time, and the presence of an angle between the wire to be wound and the transformer container. The invention proposes a switching power supply transformer, a wire pressing device, and a method for using the same.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A switching power supply transformer, used for positioning its lead ends during transformer protection, comprising:

[0012] Mounting plate and base fixed to the top of mounting plate, the base having a protective shell on top;

[0013] The positioning structure includes a rectangular groove, a fixed clamping block, a movable clamping block, and a sliding rod disposed in the base. The fixed clamping block is fixed to one side of the rectangular groove. The movable clamping block is horizontally movable in the rectangular groove via the sliding rod. A tension spring is sleeved on the sliding rod, and the two ends of the tension spring are respectively connected to the movable clamping block and the inner wall of the rectangular groove.

[0014] A pin block is fixed at the bottom of the protective shell, and a push block is fixed on one side of the pin block. When the protective shell is installed on the base, the push block abuts against the end of the sliding rod and drives the moving clamp block to move towards the fixed clamp block, so that the two cooperate to clamp the transformer lead end.

[0015] In one possible design, the base has multiple slots at the top, the pin is slidably inserted into the slots, and the sliding rod passes horizontally through the sidewall of the slot and communicates with the rectangular groove.

[0016] In one possible design, multiple bolts are also included, which are threaded to the sidewall of the slot. The pin block has a trapezoidal groove that mates with the bolt. When the bolt is screwed in, its end engages with the inclined surface of the trapezoidal groove to drive the protective shell downward.

[0017] In one possible design, the protective shell is provided with multiple ventilation holes, the bottom of which forms an outwardly inclined water guiding surface. The ventilation holes are provided with a metal mesh and multiple V-shaped plates, the openings of which face away from the transformer body, and a tapered groove with a gradually decreasing cross-sectional area is formed between adjacent V-shaped plates.

[0018] The wire clamping device, including the aforementioned switching power supply transformer, further includes:

[0019] A base plate and a movable seat slidably connected to the base plate, a rectangular tube is provided above the movable seat, and a rotating wheel and a pressing wheel are provided inside the rectangular tube;

[0020] The pressing structure includes a first lifting rod, a lever, and a second lifting rod. The top of the second lifting rod is provided with a load-bearing box, and its side wall is slidably engaged with the strip groove of the lever through a pin. The lever abuts against the bottom of the U-shaped seat at the top of the first lifting rod through a guide wheel, and the pressing wheel is rotatably disposed in the U-shaped seat.

[0021] In one possible design, it also includes two vertical plates and a rubber rotating roller rotatably connected between the two vertical plates. The vertical plates are provided with rectangular lifting grooves and lifting seats that can be raised and lowered. The rubber rotating roller is pivotally connected to the lifting seats. The movable seat is provided with a connecting pipe that connects the first hydraulic cylinder and the second hydraulic cylinder. When the lifting seat moves down, the second hydraulic piston rod drives hydraulic oil to enter the first hydraulic cylinder through the connecting pipe and pushes the rectangular cylinder up.

[0022] In one possible design, a reciprocating lead screw is rotatably provided on the top of the base plate, the movable seat engages with the helical groove of the reciprocating lead screw via a slider, and a limiting arc plate is fixedly provided on the inner wall of the top of the rectangular cylinder.

[0023] In one possible design, the surfaces of the pressure wheel and the rotating wheel are provided with coaxially corresponding limiting annular grooves.

[0024] The method of using the wire crimping device in this application includes the following steps:

[0025] S1. Insert the wire into the rectangular tube and initially limit it through the limiting arc plate. The weight of the load-bearing box drives the lever, which in turn causes the pressure wheel and the rotating wheel to press the wire under the action of the annular groove. The counterweights in the load-bearing box can be added or removed to adjust the clamping force and suppress wire skipping or deviation.

[0026] S2. The screw drives the rectangular cylinder to reciprocate to achieve uniform winding. The outer expansion coil pushes the lifting seat to press down the second hydraulic piston rod. Hydraulic oil is injected into the first hydraulic cylinder through the connecting pipe to lift the support rod, so that the rectangular cylinder moves up synchronously to maintain the horizontal tension of the wire and prevent wire breakage.

[0027] S3. The transformer after the line is placed on the base, and the lead end passes through the mounting plate and the rectangular groove. When the protective shell is closed, the pin block is inserted into the slot. Tighten the bolt so that its inclined surface abuts against the trapezoidal groove to drive the protective shell to press down and seal. At the same time, the push block pushes the moving clamp block and the fixed clamp block to hold the lead end.

[0028] S4. During operation, hot airflow is accelerated and discharged through the conical groove between the V-shaped plates. The conical groove has a tapered cross-section to enhance the airflow rate. The metal mesh and V-shaped plates form a multi-level water barrier. The sloping structure at the bottom of the ventilation hole realizes the diversion and seepage prevention of condensate.

[0029] Beneficial effects: In this invention, a sliding rod slides through one side of the inner wall of the slot, one end of the sliding rod is fixedly connected to a movable clamping block, and the fixed clamping block is fixed on the side of the rectangular slot away from the sliding rod. A push block that cooperates with the sliding rod is fixed on one side of the pin block. When the pin block is inserted into the slot, the pushing force of the push block on the sliding rod can drive the movable clamping block to move inward. The movable clamping block and the fixed clamping block can clamp and fix the lead end, ensuring the stability of the lead end. This not only facilitates subsequent soldering with the pin, but also protects the lead end and prevents it from breaking.

[0030] In this invention, the outer wall of the protective shell is provided with multiple ventilation holes, a metal mesh is fixed inside each ventilation hole, and multiple V-shaped plates are fixed inside each ventilation hole. A conical groove is formed on the side of two adjacent V-shaped plates away from the metal mesh. Hot air is discharged through the conical groove between two adjacent V-shaped plates. Since the area of ​​the end face of the conical groove away from the transformer body is smaller than the area of ​​the other side, the hot air passing through the conical groove can flow to the outside more quickly. In addition, the metal mesh can initially block moisture when it seeps in, and the cooperation of multiple V-shaped plates can further block moisture. The inclined surface at the bottom of the ventilation hole can prevent moisture from seeping into the base.

[0031] In this invention, pins are fixed to the sides of the two second lifting rods that are close to each other, and guide wheels are rotatably connected to the top sides of the two levers. Each lever has a slotted groove, and the pins slide in cooperation with the slots. When the second lifting rod moves downward, the levers rotate through the cooperation of the pins and slots, pushing the pressure wheel upward. The pressure wheel then cooperates with the rotating wheel to press the wire. During the pressing process, the limiting annular groove in the rotating wheel and the pressure wheel further limits the wire, preventing wire skipping and deviation. Additionally, different weights of load-bearing blocks can be placed inside the load-bearing box to increase the weight of the load-bearing box and the second lifting rod, controlling the pressing force of the pressure wheel on the wire. This allows for long-term wire pressing operations without the need for springs.

[0032] In this invention, lifting seats are slidably connected within both rectangular lifting slots. The top ends of the two second hydraulic piston rods are fixedly connected to the bottoms of the two lifting seats, respectively. The first hydraulic cylinder is fixed to the bottom inner wall of the sliding slot, and the top end of the hydraulic piston rod is fixedly connected to the bottom of the support rod. The first hydraulic cylinder is connected to the second hydraulic cylinder through a connecting pipe. During the winding process, the number of turns gradually increases, and the outermost coil pushes the rubber rotating roller and the lifting seat downwards. The lifting seat pushes the second hydraulic piston rod downwards, and the hydraulic oil in the second hydraulic cylinder is injected into the first hydraulic cylinder through the connecting pipe, thereby pushing the support rod and the rectangular cylinder upwards. This ensures that the wire remains horizontal when winding through the rectangular cylinder, thus preventing the wire from breaking.

[0033] In this invention, the lead ends can be positioned during the protection of the transformer body to facilitate subsequent soldering with the pins, and the protective shell can also dissipate heat and provide waterproofing. In addition, during the winding process, the weight of the load-bearing box and the second lifting rod enables the pressure wheel and the rotating wheel to perform the pressure operation stably for a long time. Furthermore, during the winding process, the wire passing through the rectangular tube can be wound on the magnetic core of the capacitor at a horizontal angle, avoiding the wire from breaking due to excessive deviation angle. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural schematic diagram of a switching power supply transformer provided in Embodiment 1 of the present invention;

[0035] Figure 2 This is a three-dimensional exploded view of a switching power supply transformer provided in Embodiment 1 of the present invention;

[0036] Figure 3 This is a three-dimensional cross-sectional view of the base of a switching power supply transformer provided in Embodiment 1 of the present invention.

[0037] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0038] Figure 5 This is a cross-sectional view of the protective shell and metal mesh of a switching power supply transformer provided in Embodiment 2 of the present invention.

[0039] Figure 6 This is a three-dimensional structural schematic diagram of the wire pressing device provided in Embodiment 1 of the present invention;

[0040] Figure 7 This is a three-dimensional exploded structural diagram of the first hydraulic cylinder, the connecting pipe, and the second hydraulic cylinder of the wire pressing device provided in Embodiment 1 of the present invention;

[0041] Figure 8 This is a three-dimensional cross-sectional view of the movable seat and support rod of the pressure device provided in Embodiment 1 of the present invention.

[0042] Figure 9 This is a three-dimensional cross-sectional view of the rectangular cylinder of the pressure device provided in Embodiment 1 of the present invention;

[0043] Figure 10 This is a three-dimensional exploded view of the U-shaped base, the load-bearing box, and the first lifting rod of the wire pressing device provided in Embodiment 1 of the present invention.

[0044] Figure 11 This is a three-dimensional exploded view of the lever, second lifting rod, and guide wheel of the pressing device provided in Embodiment 1 of the present invention.

[0045] In the diagram: 1. Mounting plate; 2. Base; 3. Protective shell; 4. Transformer body; 5. Slot; 6. Pin block; 7. Trapezoidal groove; 8. Bolt; 9. Rectangular groove; 10. Fixed clamping block; 11. Moving clamping block; 12. Sliding rod; 13. Tension spring; 14. Push block; 15. Ventilation hole; 16. Metal mesh; 17. V-shaped plate; 18. Conical groove; 19. First hydraulic cylinder; 20. Hydraulic piston rod; 21. Vertical plate; 22. Rectangular lifting groove; 23. Lifting seat; 24. Rotating shaft; 25. Rubber... 26. Glue rotating roller; 27. Second hydraulic cylinder; 28. Second hydraulic piston rod; 29. ​​Connecting pipe; 30. Relief groove; 31. Reciprocating screw; 32. Rectangular cylinder; 33. Rotating wheel; 34. First lifting rod; 35. U-shaped seat; 36. Pressure roller; 37. Limiting arc plate; 38. Second lifting rod; 39. Load-bearing box; 40. Lever; 41. Guide wheel; 42. Strip groove; 43. Pin rod; 44. Base plate; 45. Moving seat; 46. Sliding groove; 47. Support rod; 48. Limiting annular groove. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Example 1: Reference Figures 1-4 The transformer relates to the field of transformer technology and is used to position the lead ends of a transformer during protection. It includes a mounting plate 1 and a base 2 fixed on the top of the mounting plate 1. The transformer body 4 is placed on top of the base 2, and a protective shell 3 for protecting the transformer body 4 is provided on the top of the base 2. In order to position the lead ends of the transformer body 4 when the protective shell 3 is installed with the base 2, a positioning structure is provided between the base 2 and the protective shell 3. The positioning structure includes a rectangular groove 9 provided in the base 2 and a fixed clamping block 10 and a movable clamping block 11 provided in the rectangular groove 9.

[0048] refer to Figures 2-4The positioning structure also includes multiple slots 5 set on the top of the base 2, multiple pins 6 fixed to the bottom of the protective shell 3, and the pins 6 slidingly extending into the slots 5. A sliding rod 12 extending into the adjacent rectangular groove 9 slides through the inner wall of one side of one of the slots 5. One end of the sliding rod 12 is fixedly connected to the movable clamping block 11. The fixed clamping block 10 is fixed on the side of the rectangular groove 9 away from the sliding rod 12. The movable clamping block 11 and the sliding rod 12 cooperate to clamp and fix the lead end of the transformer body 4. The outer wall of the sliding rod 12 is sleeved with A tension spring 13 is fixedly connected to the movable clamping block 11 (the parameters of the tension spring 13 are preferably: wire diameter 0.5-2mm, outer diameter 5-15mm, free length 20-100mm, elastic coefficient 5-20N / mm, the specific values ​​are selected according to the lead wire end size and clamping force requirements). One end of the tension spring 13 is fixedly connected to the inner wall of one side of the rectangular groove 9, which is used to release the clamping block 11 from the lead wire end in the natural state. A push block 14 that cooperates with the sliding rod 12 is fixed on one side of the pin block 6 (the push block 14 can be provided with...). The sliding rod is designed with various cross-sectional shapes to adapt to different installation spaces and thrust requirements, including but not limited to: triangular push blocks, whose single-sloped structure enables rapid linear displacement and is suitable for high-frequency insertion and extraction conditions; wedge-shaped push blocks, employing double asymmetrical slopes, allowing for graded adjustment of clamping force and adapting to multiple lead wire specifications; arc-shaped push blocks, which reduce sliding friction through curved surface contact and extend the service life of the sliding rod 12; trapezoidal push blocks, which enable lead wire positioning; and polygonal push blocks, whose angular structure enhances the meshing stability with the sliding rod 12, used to hold the sliding rod... 12. Push towards the center; place the transformer body 4 on the base 2, with its lead end passing through the rectangular slot 9. When the protective shell 3 covers the outside of the transformer and is placed on the top of the base 2, the pin 6 is inserted into the slot 5. When the pin 6 moves down, the pushing force of the push block 14 on the sliding rod 12 can drive the moving clamp 11 to move inward. The moving clamp 11 and the fixed clamp 10 can clamp and fix the lead end, ensuring the stability of the lead end. This not only facilitates the later soldering with the pin, but also protects the lead end and prevents it from breaking.

[0049] refer to Figure 3 and Figure 4The positioning structure also includes multiple bolts 8, one end of which is threaded into the slot 5. Multiple pins 6 are provided with trapezoidal grooves 7 on the side near the bolts 8, and one end of the bolts 8 extends into the trapezoidal grooves 7 and engages with the inclined surface of the trapezoidal grooves 7. This is used to make the protective shell 3 fit tightly against the base 2 during the tightening of the bolts 8. When the protective shell 3 covers the outside of the transformer and is placed on the top of the base 2, the pins 6 are inserted into the slot 5. Then the bolts 8 are tightened and one end of the bolts 8 is pushed into the trapezoidal grooves 7. The engagement of one end of the bolts 8 with the inclined surface at the bottom of the trapezoidal grooves 7 can drive the protective shell 3 to move down, thereby making the base 2 fit tightly against the protective shell 3 to ensure fixation. When the pins 6 move down, the pushing force of the push block 14 on the sliding rod 12 can drive the moving clamp 11 to move inward to clamp and fix the lead end.

[0050] Reference Figure 6 and Figure 9 The wire pressing device relates to the field of transformer technology, including the aforementioned transformer, and also includes a base plate 43. A movable seat 44 is slidably connected to the top of the base plate 43. A rectangular tube 31 is provided above the movable seat 44. A rotating wheel 32 and a wire pressing wheel 35 are provided inside the rectangular tube 31. The two cooperate to limit and press the wire to be wound. In order to enable the wire pressing wheel 35 to move upward and cooperate with the rotating wheel 32 to perform the wire pressing operation, a wire pressing structure is provided inside the rectangular tube 31. The wire pressing structure includes a first lifting rod 33 that slides through the inner wall of the bottom of the rectangular tube 31 and two levers 39 that rotate inside the rectangular tube 31.

[0051] Reference Figure 6 and Figure 7 The system includes two vertical plates 21 fixed to the top of the base plate 43. The variable container core to be wound is wound between the two vertical plates 21. The two vertical plates 21 are rotatably connected to the same rotating shaft 24. A rubber rotating roller 25 is fixedly sleeved on the outer wall of the rotating shaft 24. The rubber rotating roller 25 cooperates with the outermost coil of the variable container core to be wound. In order to ensure that the wire passing through the rectangular cylinder 31 can be arranged horizontally with the outermost coil of the variable container core during the winding process, an automatic adjustment structure is provided on the movable seat 44 and the base plate 43. The automatic adjustment structure includes two second hydraulic cylinders 26 fixed to the top of the base plate 43 and a first hydraulic cylinder 19 fixed inside the movable seat 44. A second hydraulic piston rod 27 and a hydraulic piston rod 20 are respectively sealed and slidably connected inside the second hydraulic cylinders 26 and the first hydraulic cylinder 19, and the second hydraulic piston rod 27 and the hydraulic piston rod 20 extend above the second hydraulic cylinders 26 and the first hydraulic cylinder 19, respectively.

[0052] Reference Figures 9-11The pressing structure also includes two second lifting rods 37 that slide through the bottom inner wall of the rectangular tube 31. Each of the two second lifting rods 37 has a load-bearing box 38 fixed to its top. A load-bearing block is placed inside the load-bearing box 38 to increase the weight of the second lifting rod 37. Pins 42 are fixed to the sides of the two second lifting rods 37 that are close to each other via a base. A U-shaped seat 34 is fixed to the top of the first lifting rod 33. The pressing wheel 35 rotates inside the U-shaped seat 34. Guide wheels 40 are rotatably connected to the top sides of the two levers 39 via a base. The guide wheels 40 engage with the bottom of the U-shaped seat 34. Each of the two levers 39 has a slot 41. The pin 42 slides into the slot 41. The second lifting rod 37 is connected to the slot 41 via the pin 42. The lever 39 is driven to rotate, which in turn drives the U-shaped seat 34 to move upward. The rotating wheel 32 rotates inside the rectangular tube 31, and the rectangular tube 31 is located above the pressing wheel 35. The load-bearing box 38 and the second lifting rod 37 move downward under their own weight, and push the pressing wheel 35 upward through the lever 39. Thus, the pressing wheel 35 can cooperate with the rotating wheel 32 to press the wire. During the pressing process, the limiting annular groove 47 in the rotating wheel 32 and the pressing wheel 35 can further limit the wire, preventing the wire from jumping or deviating. In addition, load-bearing blocks of different weights can be placed in the load-bearing box 38 to increase the weight of the load-bearing box 38 and the second lifting rod 37, which can control the pressing force of the pressing wheel 35 on the wire.

[0053] Reference Figures 6-8The automatic adjustment structure also includes two rectangular lifting slots 22, which are respectively set in the corresponding vertical plates 21. Lifting seats 23 are slidably connected to each of the two rectangular lifting slots 22. The two ends of the rotating shaft 24 rotatably pass through the two lifting seats 23. The top ends of the two second hydraulic piston rods 27 are fixedly connected to the bottom of the two lifting seats 23, respectively, for driving the second hydraulic piston rods 27 to rise and fall. The top of the movable seat 44 is provided with a sliding groove 45, in which a support rod 46 is slidably connected. The top end of the support rod 46 is fixedly connected to the bottom of the rectangular cylinder 31, for driving the rectangular cylinder 31 to rise and fall. The first hydraulic cylinder 19 is fixed to the bottom inner wall of the sliding groove 45, and the top end of the hydraulic piston rod 20 is fixedly connected to the top inner wall of the support rod 46. The first hydraulic cylinder 19 is used to drive the support rod 46 to rise and fall. Both sides of the first hydraulic cylinder 19 are fixed with connecting pipes 28. The two connecting pipes 28 are respectively fixedly connected to the corresponding second hydraulic cylinder 26. Both sides of the movable seat 44 are provided with clearance grooves 29 connected to the sliding groove 45. The clearance grooves 29 are used to make way for the connecting pipes 28. During the winding process, the number of turns gradually increases, and the outermost coil pushes the rubber rotating roller 25 and the lifting seat 23 to move down. The lifting seat 23 pushes the second hydraulic piston rod 27 down. The hydraulic oil in the second hydraulic cylinder 26 is injected into the first hydraulic cylinder 19 through the connecting pipes 28, thereby pushing the support rod 46 and the rectangular cylinder 31 to move up. This ensures that the wire is always placed horizontally when it passes through the rectangular cylinder 31 for winding, thereby avoiding the phenomenon of wire breakage.

[0054] Reference Figure 6 , Figure 7 and Figure 9 The top of the base plate 43 is rotatably connected to a reciprocating lead screw 30 via a base. One end of the reciprocating lead screw 30 passes through a movable seat 44. The movable seat 44 slides with the spiral groove on the outer wall of the reciprocating lead screw 30 via a slider, which drives the movable seat 44 to move back and forth, so that the wire is evenly wound on the magnetic core of the transformer. Two limiting arc plates 36 are fixed on the top inner wall of the rectangular cylinder 31. The two limiting arc plates 36 are located on both sides of the rotating wheel 32, which are used to initially limit the wire.

[0055] Reference Figure 10 Both the pressing wheel 35 and the rotating wheel 32 have a limiting annular groove 47 on their outer walls. The pressing wheel 35 and the rotating wheel 32 can limit and press the wire through the limiting annular groove 47.

[0056] Example 2: Reference Figure 5Improvements based on Embodiment 1: The outer wall of the protective shell 3 is provided with multiple ventilation holes 15. The bottom of each ventilation hole 15 is provided with an outwardly inclined surface to guide moisture to the outside. A metal mesh 16 is fixed inside the ventilation hole 15, and the metal mesh 16 is located away from the transformer body 4. The metal mesh 16 forms electromagnetic shielding to protect the transformer body 4 inside the protective shell 3. Multiple V-shaped plates 17 are fixed inside the ventilation hole 15, and the openings of the V-shaped plates 17 face outward to block moisture from seeping into the protective shell 3. A conical groove is formed on the side of two adjacent V-shaped plates 17 away from the metal mesh 16. 18 is used to reduce the cross-sectional area and increase the speed of hot air discharge when hot air is discharged. When the transformer body 4 is running, the temperature inside the protective shell 3 rises, and hot air is discharged through the conical groove 18 between two adjacent V-shaped plates 17. Since the area of ​​the end face of the conical groove 18 away from the transformer body 4 is smaller than the area of ​​the other side, the hot air passing through the conical groove 18 can be accelerated to flow to the outside. In addition, the metal mesh 16 can initially block moisture when moisture seeps in, and the cooperation of multiple V-shaped plates 17 can further block moisture. The inclined surface at the bottom of the ventilation hole 15 can prevent moisture from seeping into the base 2.

[0057] The method of using the wire crimping device includes the following steps:

[0058] S1. When winding the transformer, the wire to be wound is passed through the rectangular tube 31. The two limiting arc plates 36 initially limit the wire. The load-bearing box 38 and the second lifting rod 37 move down under their own weight and push the pressure wheel 35 up through the lever 39. Then the pressure wheel 35 can cooperate with the rotating wheel 32 to press the wire. During the pressing process, the rotating wheel 32 and the limiting annular groove 47 in the pressure wheel 35 can further limit the wire to avoid the wire from jumping or deviating. In addition, load-bearing blocks of different weights can be placed in the load-bearing box 38 to increase the weight of the load-bearing box 38 and the second lifting rod 37, which can control the pressing force of the pressure wheel 35 on the wire.

[0059] S2. During winding, the motor drives the reciprocating screw 30 to rotate. The reciprocating screw 30 drives the moving seat 44 and the rectangular cylinder 31 to move back and forth in a straight line to ensure that the wire is wound evenly. During the winding process, the number of turns gradually increases, and the outermost coil pushes the rubber rotating roller 25 and the lifting seat 23 to move down. The lifting seat 23 pushes the second hydraulic piston rod 27 down. The hydraulic oil in the second hydraulic cylinder 26 is injected into the first hydraulic cylinder 19 through the connecting pipe 28, which in turn pushes the support rod 46 and the rectangular cylinder 31 to move up. This ensures that the wire is always placed horizontally when it passes through the rectangular cylinder 31 for winding, thereby avoiding the phenomenon of wire breakage.

[0060] S3. After the transformer winding is completed, it is placed on the base 2. Its lead end passes through the rectangular slot 9 and the mounting plate 1 in sequence. When the protective shell 3 covers the outside of the transformer and is placed on the top of the base 2, the pin 6 is inserted into the slot 5. Then the bolt 8 is tightened and one end of the bolt 8 is pushed to extend into the trapezoidal slot 7. The one end of the bolt 8 cooperates with the inclined surface at the bottom of the trapezoidal slot 7 to drive the protective shell 3 to move down, so that the base 2 and the protective shell 3 are tightly attached to each other to ensure fixation. When the pin 6 moves down, the pushing force of the push block 14 on the sliding rod 12 can drive the moving clamp 11 to move inward. The moving clamp 11 and the fixed clamp 10 can clamp and fix the lead end to ensure the stability of the lead end. This not only facilitates the subsequent soldering with the pin, but also protects the lead end to prevent it from breaking.

[0061] S4. When the transformer body 4 is running, the temperature inside the protective shell 3 rises, and the hot air is discharged through the conical groove 18 between two adjacent V-shaped plates 17. Since the area of ​​the end face of the conical groove 18 away from the transformer body 4 is smaller than the area of ​​the other side, the hot air passing through the conical groove 18 can be accelerated to flow to the outside. In addition, the metal mesh 16 can initially block the water when it seeps in, and the cooperation of multiple V-shaped plates 17 can further block the water. The water guide surface set at the bottom of the ventilation hole 15 can prevent water from seeping into the base 2.

[0062] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A switching power supply transformer for positioning its lead ends during transformer protection, comprising a mounting plate (1) and a base (2) fixed to the top of the mounting plate (1), wherein a protective shell (3) is provided on the top of the base (2), characterized in that, Also includes: The positioning structure includes a rectangular groove (9) in the base (2), a fixed clamping block (10), a movable clamping block (11) and a sliding rod (12). The fixed clamping block (10) is fixed to one side of the rectangular groove (9). The movable clamping block (11) is horizontally movable in the rectangular groove (9) through the sliding rod (12). A tension spring (13) is sleeved on the sliding rod (12). The two ends of the tension spring (13) are respectively connected to the movable clamping block (11) and the inner wall of the rectangular groove (9). The protective shell (3) has a pin block (6) fixed at the bottom, and a push block (14) is fixed on one side of the pin block (6). When the protective shell (3) is installed on the base (2), the push block (14) abuts against the end of the sliding rod (12) and drives the moving clamp (11) to move towards the fixed clamp (10), so that the two cooperate to clamp the transformer lead end. The base (2) has multiple slots (5) on the top. The pin block (6) is slidably inserted into the slot (5). The sliding rod (12) passes horizontally through the side wall of the slot (5) and communicates with the rectangular groove (9). It also includes multiple bolts (8). The bolts (8) are threaded to the side wall of the slot (5). The pin block (6) has a trapezoidal groove (7) that cooperates with the bolt (8). When the bolt (8) is screwed in, its end cooperates with the inclined surface of the trapezoidal groove (7) to drive the protective shell (3) to press down. The shape of the push block (14) is selected from the following: triangular push block; wedge push block; arc push block; polygonal push block.

2. A switching power supply transformer according to claim 1, characterized in that, The protective shell (3) is provided with multiple ventilation holes (15). The bottom of the ventilation holes (15) forms an outwardly inclined water guiding surface. The ventilation holes (15) are provided with a metal mesh (16) and multiple V-shaped plates (17). The openings of the V-shaped plates face away from the transformer body (4). A tapered groove (18) with a gradually decreasing cross-sectional area is formed between adjacent V-shaped plates (17).

3. A wire clamping device, comprising a switching power supply transformer as described in claim 2, characterized in that, Also includes: A base plate (43) and a movable seat (44) slidably connected to the base plate. A rectangular tube (31) is provided above the movable seat (44). A rotating wheel (32) and a pressing wheel (35) are provided inside the rectangular tube (31). The pressing structure includes a first lifting rod (33), a lever (39) and a second lifting rod (37). The top of the second lifting rod (37) is provided with a load-bearing box (38), and its side wall is slidably engaged with the strip groove (41) of the lever (39) through a pin (42). The lever (39) abuts against the bottom of the U-shaped seat (34) at the top of the first lifting rod (33) through a guide wheel (40). The pressing wheel (35) is rotatably disposed in the U-shaped seat (34).

4. The wire pressing device according to claim 3, characterized in that, It also includes two vertical plates (21) and a rubber rotating roller (25) rotatably connected between the two vertical plates (21). The vertical plates (21) are provided with a rectangular lifting groove (22) and a lifting seat (23) that can be raised and lowered. The rubber rotating roller (25) is pivotally connected to the lifting seat (23). The movable seat (44) is provided with a connecting pipe (28) connecting the first hydraulic cylinder (19) and the second hydraulic cylinder (26). When the lifting seat (23) moves down, the second hydraulic piston rod (27) drives the hydraulic oil to enter the first hydraulic cylinder (19) through the connecting pipe (28) and push the rectangular cylinder (31) up.

5. The wire pressing device according to claim 4, characterized in that, The bottom plate (43) is rotatably provided with a reciprocating screw (30) at the top, and the moving seat (44) is engaged with the spiral groove of the reciprocating screw (30) through a slider. The inner wall of the top of the rectangular tube (31) is fixedly provided with a limiting arc plate (36).

6. The wire pressing device according to claim 5, characterized in that, The surfaces of the pressing wheel (35) and the rotating wheel (32) are provided with coaxial corresponding limiting annular grooves (47).

7. A method of using the crimping device, applied to the crimping device of claim 6, characterized in that, Includes the following steps: S1. Insert the wire into the rectangular tube (31) and initially limit it through the limiting arc plate (36). The load-bearing box (38) drives the lever (39) by gravity, which in turn causes the pressure wheel (35) and the rotating wheel (32) to press the wire under the action of the annular groove (47). The counterweights in the load-bearing box (38) can be added or removed to adjust the pressing force and suppress wire skipping or deviation. S2. The multi-screw (30) drives the rectangular cylinder (31) to reciprocate to achieve uniform winding. The outer expansion coil pushes the lifting seat (23) to press down the second hydraulic piston rod (27). Hydraulic oil is injected into the first hydraulic cylinder (19) through the connecting pipe (28) to lift the support rod (46), so that the rectangular cylinder (31) moves up synchronously to maintain the horizontal tension of the conductor and prevent the wire from breaking. S3. The transformer after the line is placed on the base (2). The lead end passes through the mounting plate (1) and the rectangular groove (9). When the protective shell (3) is closed, the pin block (6) is inserted into the slot (5). Tighten the bolt (8) so that its inclined surface abuts against the trapezoidal groove (7) to drive the protective shell (3) to press down and seal. At the same time, push the moving clamp block (11) and the fixed clamp block (10) through the push block (14) to clamp the lead end. S4. During operation, the hot airflow is accelerated and discharged through the conical groove (18) between the V-shaped plates (17). The conical groove (18) has a tapered cross-section to enhance the airflow rate. The metal mesh (16) and the V-shaped plates (17) form a multi-level water barrier. The bottom slope of the ventilation hole (15) realizes the diversion and seepage prevention of condensate.

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