Pin tinning device of switching power supply transformer
By using the correction slots and grooves in the clamping plate and fixing plate to correct the pins of the switching power supply transformer, the problem of uneven tin plating caused by tilted pins is solved, and the uniformity and reliability of pin tin plating are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-24
AI Technical Summary
In the prior art, when tinning a switching power supply transformer, the tilted pins cause uneven tinning, which affects the tinning effect.
A pin tinning device for a switching power supply transformer is used. By using a clamping plate and a fixing plate together, the tilted pins are clamped and corrected using a correction slot and groove to ensure that the pins are tinned vertically.
It effectively improves the uniformity of pin tinning, avoids uneven tinning caused by tilted pins, and improves the reliability and production efficiency of tinning.
Smart Images
Figure CN224031070U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of tinning needle foot, especially to a tinning device for the needle foot of switching power transformer. BACKGROUND
[0002] The switching power transformer is the core component of the switching power supply, and is used for high-frequency electric energy conversion and electrical isolation. It converts direct current into high-frequency alternating current (tens of kHz to MHz) through MOSFET and other devices, and outputs stable direct current after voltage regulation and rectification through the transformer. It has the characteristics of small size, high efficiency, multiple winding and multiple voltage output, and is widely used in electronic equipment, communication and industrial fields. Tinning the needle foot of the switching power transformer has the following benefits: improved weldability, corrosion resistance and durability, adaptation to automated production, electrical conductivity guarantee and environmental protection. The un-tinned pin needs additional processing, increasing the cost and complexity. The tinning process is a key step to ensure the reliability and production efficiency of the switching power supply.
[0003] The tinning device for the needle foot of the switching power transformer usually consists of a base, a moving tinning mechanism, a tinning treatment mechanism and a air drying mechanism. During use, the switching power transformer is clamped and moved by the moving tinning mechanism, then the needle foot is cleaned by immersing it in a water tank, the residual water on the needle foot is blown dry by the air drying mechanism, and finally the needle foot is immersed in a washing tank by the moving tinning mechanism to form uniform tinning. After tinning is completed, the moving tinning mechanism is moved again to immerse the needle foot in a sewage tank for rapid cooling to avoid deformation or oxidation caused by high temperature.
[0004] In the use of the existing tinning device for the needle foot, the switching power transformer is usually placed on the clamping plate in the moving tinning mechanism. However, due to the possibility of needle foot inclination or bending during storage or operation of the switching power transformer, the clamping plate cannot correct the needle foot. At this time, tinning is directly performed on the needle foot. After the inclined needle foot contacts the tin liquid level, the inclined needle foot cannot be uniformly tinned like the perpendicular needle foot in the tin liquid level, resulting in uneven tinning of the inclined needle foot and affecting the tinning effect of the needle foot. Utility model content
[0005] The utility model aims at solving the problem of uneven tinning effect caused by needle foot inclination during tinning of the switching power transformer in the prior art, and proposes a tinning device for the needle foot of the switching power transformer.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0007] The utility model provides a kind of pin tinning device of switching power supply transformer, including fixedly installed on tinning device's mounting post, the moving plate is slidably installed on the mounting post, and mounting slot and positioning slot are opened in moving plate, and mounting slot and positioning slot are communicated, wherein, fixed plate is symmetrically installed in positioning slot, clamping plate is slidably installed between two fixed plates, and at least three correction slots are opened in fixed plate and fixed plate, when pin is inserted between clamping plate and fixed plate, correction slot and recess are matched extrusion and correct pin, clamping piece is arranged in mounting slot, when switching power supply transformer is placed in mounting slot, clamping piece exerts the downward pressure perpendicular to the plane of switching power supply transformer.
[0008] In order to guide the movement of the pin, preferably, an auxiliary rod is slidably connected between every two correction slots, the auxiliary rod is fixedly installed between the fixed plates, and the clamping plate is slidably connected to the auxiliary rod.
[0009] In order to facilitate the pin to enter the correction slot, further, a "V"-shaped protrusion is provided on the auxiliary rod, the tip of the protrusion faces upward, and is used to assist the positioning of the pin.
[0010] In order to clamp the switching power supply transformer, preferably, the clamping piece includes a pressing plate slidably installed in the mounting slot, wherein a spring is fixedly installed on the pressing plate, and the two ends of the spring are respectively abutted against the pressing plate and the inner wall of the mounting slot.
[0011] In order to protect the switching power supply transformer, further, a protective pad is attached to the lower surface of the pressing plate and the inner wall of the mounting slot, and the deformation amount of the protective pad is 75%.
[0012] In order to drive the movement of the clamping plate, preferably, a servo motor is fixedly installed on the side surface of the moving plate, a bidirectional screw rod is fixedly connected to the output end of the servo motor, the distal end of the bidirectional screw rod extends to the outside of the clamping plate and is rotatably connected to the fixed plate, and the clamping plate is slidably connected to the bidirectional screw rod, so that the two clamping plates move closer to or away from each other when the bidirectional screw rod rotates.
[0013] Compared with the prior art, the pin tinning device of switching power supply transformer has the following advantages:
[0014] The pin tinning device of switching power supply transformer uses the clamping plate in cooperation with the fixed plate, when the clamping plate slides close to the fixed plate, the correction slots provided on the clamping plate cooperate with the recesses to clamp and correct the inclined pin, which avoids the problem of uneven tinning of the pin caused by the inclination of the pin, and effectively improves the uniformity of pin tinning.
[0015] The parts not involved in the device are the same as or can be realized by the prior art, and the utility model uses the fixed plate and the clamping plate in cooperation, and realizes the correction of the inclined pin by clamping and extruding the pin. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 A shaft structure schematic view of a pin tinning device for a switching power supply transformer is provided in the present application;
[0017] Figure 2 A partial structure schematic view of the pin tinning device for the switching power supply transformer is provided in the present application;
[0018] Figure 3 A partial structure schematic view of the pin tinning device for the switching power supply transformer is provided in the present application; Figure 2 An enlarged structure schematic view of the middle A of the pin tinning device for the switching power supply transformer is provided in the present application;
[0019] Figure 4 An enlarged structure schematic view of the middle B of the pin tinning device for the switching power supply transformer is provided in the present application. Figure 2 An enlarged structure schematic view of the middle B of the pin tinning device for the switching power supply transformer is provided in the present application.
[0020] In the figure: 1, moving plate; 2, installation groove; 3, fixed plate; 4, clamping plate; 5, bidirectional screw rod; 6, auxiliary rod; 7, correction groove; 8, pressing plate; 9, spring; 10, installation column; 11, servo motor. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.
[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0023] Embodiment:
[0024] Reference Figures 1-4The utility model provides a kind of pin tinning device of switching power supply transformer, including fixedly installed on tinning device's mounting post 10, slidingly installed with moving plate 1 on mounting post 10, moving plate 1 is respectively provided with installation slot 2 and positioning slot, and installation slot 2 and positioning slot are communicated, and symmetrically installed with fixed plate 3 in positioning slot, two clamping plates 4 are slidingly installed in positioning slot, clamping plate 4 is installed between two fixed plates 3, adjacent fixed plate 3 and clamping plate 4 are used in cooperation, at least three correction slots 7 are provided in clamping plate 4 and fixed plate 3, and correction slot 7 is semicircular, when pin is inserted between clamping plate 4 and fixed plate 3, correction slot 7 is extruded and corrects pin after clamping plate 4 moves, and clamping piece is arranged in installation slot 2, when switching power supply transformer is placed in installation slot 2, clamping piece exerts the downward pressure perpendicular to the plane of switching power supply transformer.
[0025] Specifically, by clamping plate 4 cooperating with fixed plate 3, when clamping plate 4 slides close to fixed plate 3, two correction slots 7 cooperate to clamp and correct the inclined pin, avoiding the problem of uneven tinning of the pin caused by pin inclination, effectively improving the uniformity of pin tinning.
[0026] The clamping piece includes a pressure plate 8 slidingly installed in the installation slot 2, the lower surface of the pressure plate 8 is provided with an inclined surface, the inclination angle of the inclined surface ranges from 30° to 45°, and the preferred angle range is 45°. When installing the switching power supply transformer, the 45° inclined surface can facilitate installation and protect the switching power supply transformer. The lower surface of the pressure plate 8 and the inner wall of the installation slot 2 are both pasted with protective pads, and the deformation amount of the protective pads is 75%. When the switching power supply transformer is placed in the installation slot 2, the pressure plate 8 is extruded due to the deformation force of the spring 9, avoiding damage to the switching power supply transformer caused by extrusion. The spring 9 is fixedly installed on the pressure plate 8, and the two ends of the spring 9 abut against the pressure plate 8 and the inner wall of the installation slot 2, respectively. When the switching power supply transformer is placed in the installation slot 2, the spring 9 above the pressure plate 8 is extruded and deformed, applying a spring force to the pressure plate 8 to extrude the switching power supply transformer, thereby fixing the switching power supply transformer.
[0027] An auxiliary rod 6 is slidingly connected between every two correction slots 7, the auxiliary rod 6 is fixedly installed between the fixed plates 3, and the clamping plate 4 is slidingly connected to the auxiliary rod 6. The auxiliary rod 6 is provided with a "V"-shaped protrusion, and the tip of the protrusion points upward, which is used for assisting the positioning of the pin. When the bottom end of the pin contacts the V-shaped top surface of the auxiliary rod 6, the pin then slides to the side surface of the auxiliary rod 6, and then enters the groove to wait for the subsequent extrusion and correction of the pin by the clamping plate 4.
[0028] The side of the moving plate 1 is fixedly provided with a servo motor 11, the output end of the servo motor 11 is connected with a bidirectional screw rod 5 through a shaft coupling, the bidirectional screw rod 5 extends to outside the clamping plate 4 and is rotationally connected with the fixed plate 3 away from the servo motor 11, the clamping plate 4 is slidably connected on the bidirectional screw rod 5, when the bidirectional screw rod 5 rotates clockwise, the two clamping plates 4 approach each other and press the pin, and vice versa.
[0029] In the utility model, first, the switching power supply transformer is placed in the installation groove 2, the switching power supply transformer is pushed to move the pressing plate 8 upwards, then the spring 9 is contracted and deformed and exerts the elastic force on the pressing plate 8, then the pressing plate 8 is pressed to extrude the switching power supply transformer, and the fixing is completed.
[0030] When the switching power supply transformer is installed into the installation groove 2, the pin is inserted between the clamping plate 4 and the fixed plate 3, then the auxiliary rod 6 is pressed to extrude the inclined pin, then the pin slides into the groove, further, the servo motor 11 is started, the servo motor 11 drives the bidirectional screw rod 5 to rotate clockwise, so that the two clamping plates 4 approach the corresponding fixed plate 3 respectively, then the pin is positioned through the correction groove 7 and the groove, the pressure is applied through the movement of the clamping plate 4, finally, the pin is placed in the groove and the correction groove 7 and is extruded and corrected, so that the pin is perpendicular to downward, the inclination is avoided, then the cylinder on the device is started, the moving plate 1 is moved downward through the cylinder to make the pin contact with the tin liquid, and the tinning operation is completed.
[0031] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.
Claims
1. A tinning device for the pins of a switching power transformer, comprising a mounting post (10) fixedly mounted on the tinning device, characterized in that The moving plate (1) is slidably installed on the mounting column (10), and mounting slots (2) and positioning slots are respectively formed in the moving plate (1), and the mounting slots (2) and the positioning slots are communicated, The fixing plates (3) are symmetrically installed in the positioning slots, the clamping plates (4) are slidably installed between the two fixing plates (3), at least three correction slots (7) are formed in the clamping plates (4) and the fixing plates (3), The clamping pieces are arranged in the mounting slots (2), when the switching power supply transformer is placed in the mounting slots (2), the clamping pieces apply a downward pressure perpendicular to the plane of the switching power supply transformer.
2. The apparatus according to claim 1, wherein The auxiliary rods (6) are slidably connected between every two correction slots (7), the auxiliary rods (6) are fixedly installed between the fixing plates (3), and the clamping plates (4) are slidably connected on the auxiliary rods (6).
3. The apparatus according to claim 2, wherein the apparatus is characterized by: The auxiliary rods (6) are provided with V-shaped protrusions, the tips of the protrusions are upward, and the V-shaped protrusions are used for assisting in positioning the pins.
4. The apparatus according to claim 1, wherein The clamping pieces include the pressing plates (8) which are slidably installed in the mounting slots (2), The spring (9) is fixedly installed on the pressing plate (8), and the two ends of the spring (9) are respectively abutted against the pressing plate (8) and the inner wall of the mounting slot (2).
5. The apparatus of claim 4, wherein the apparatus further comprises a tinning device for tinning the pins of the switching power transformer. The lower surface of the pressing plate (8) and the inner wall of the mounting slot (2) are pasted with protective pads, and the deformation amount of the protective pads is 75%.
6. The apparatus of claim 1, wherein the apparatus further comprises a tinning device for tinning the pins of the switching power transformer. The servo motor (11) is fixedly installed on the side surface of the moving plate (1), the output end of the servo motor (11) is fixedly connected with the bidirectional screw rod (5), the tail end of the bidirectional screw rod (5) extends to the outside of the clamping plate (4) and is rotatably connected with the fixing plate (3), the clamping plate (4) is slidably connected on the bidirectional screw rod (5), when the bidirectional screw rod (5) rotates, the two clamping plates (4) are close to or away from each other.