A shaping device for rectifier module bridge core assembly

Abstract

This utility model discloses a shaping device for rectifier module bridge core assembly in the field of rectifier module technology. The device includes a shaping base plate with a pressing portion for pressing down on a connecting piece. The pressing portion includes a fixed pressing block and an elastic pressing block. The fixed pressing block is located at one end of the shaping base plate, and the elastic pressing block is located at the other end. The pressing surfaces of the fixed pressing block and the elastic pressing block are parallel and opposite to each other. The connecting piece has a first contact end and a second contact end. The fixed pressing block is in pressure contact with the first contact end, and the elastic pressing block is in pressure contact with the second contact end. Under pressure, the first contact end presses against a first ceramic plate and presses it firmly against the base plate. Under pressure, the second contact end presses against the core and sequentially presses it against the electrode, the electrode against the second ceramic plate, and the second ceramic plate against the base plate. The advantage of this utility model is that it ensures that both ends of the connecting piece simultaneously and well contact the first ceramic plate and the core during assembly.

Description

Technical Field

[0001] This utility model relates to the field of rectifier module technology, and in particular to a shaping device for rectifier module bridge core assembly. Background Technology

[0002] The bridge core of the rectifier module is manufactured through molding and sintering. During molding, solder paste is applied or solder sheets are arranged between the components. After molding, sintering and soldering are performed to weld the components together. The positional relationship of some components during bridge core molding is as follows: a first ceramic plate and a second ceramic plate are placed on the base plate; an electrode is placed on the second ceramic plate; a die is placed on the electrode; and then a connecting piece is placed, with one end of the connecting piece placed on the first ceramic plate and the other end placed on the die. Simultaneously, solder paste is applied or solder sheets are arranged between the base plate and the first ceramic plate, between the base plate and the second ceramic plate, between the second ceramic plate and the electrode, between the electrode and the die, between the connecting piece and the first ceramic plate, and between the connecting piece and the die. This process is to improve... The welding effect between components during high-temperature sintering requires close contact between each component during molding. However, since the electrode sheets used for molding are freshly annealed, their resilience and springback can lead to poor adhesion between the connecting piece and the core, and between the connecting piece and the first ceramic plate. Therefore, the connecting piece needs to be pressed. Existing technology uses a flat-angle screwdriver for this purpose. The flat-angle screwdriver first presses one end of the connecting piece to make it fit tightly against the first ceramic plate, and then presses the other end of the connecting piece to make it fit against the core. However, it cannot be guaranteed that both ends of the connecting piece will fit against the first ceramic plate and the core simultaneously. When one end of the connecting piece is pressed, the other end will lift up. Therefore, the welding quality still cannot be guaranteed. Utility Model Content

[0003] The purpose of this invention is to provide a shaping device for rectifier module bridge core assembly, which ensures that both ends of the connecting piece are well bonded to the first ceramic plate and the core during assembly, thereby improving the sintering and welding quality in subsequent processes.

[0004] To achieve the above-mentioned objectives, the shaping device for rectifier module bridge core assembly of this utility model adopts the following technical solution:

[0005] A shaping device for rectifier module bridge core assembly includes a shaping base plate. The shaping base plate has a pressing part for pressing down a connecting piece. The pressing part includes a fixed pressing block and an elastic pressing block. The fixed pressing block is disposed at one end of the shaping base plate, and the elastic pressing block is disposed at the other end of the shaping base plate. The pressing surfaces of the fixed pressing block and the elastic pressing block are parallel and opposite to each other. The connecting piece has a first contact end and a second contact end. The fixed pressing block is in pressure contact with the first contact end, and the elastic pressing block is in pressure contact with the second contact end. Under pressure, the first contact end presses against a first ceramic plate and presses the first ceramic plate tightly against the base plate. Under pressure, the second contact end presses against the core and sequentially presses the core against the electrode, the electrode against the second ceramic plate, and the second ceramic plate against the base plate.

[0006] Preferably, the elastic pressure block includes a movable pressure column and a spring. The shaping base plate has a through hole for the movable pressure column to pass through. The upper end of the movable pressure column passes through the through hole and is provided with a limiting block. The limiting block contacts the top surface of the shaping base plate. The lower end of the movable pressure column is provided with a pressure plate that contacts the second contact end of the connecting piece. The pressure plate is circular, and the pressure surface of the pressure plate is flat. A spring is provided on the outer periphery of the movable pressure column between the pressure plate and the shaping base plate. When the elastic pressure block is pressed down, the pressure plate at the second contact end of the connecting piece is a circular platform, and stress concentration is avoided through surface-to-surface contact.

[0007] Preferably, the fixing block includes multiple pressure strips vertically arranged at the bottom of the shaping base plate. The multiple pressure strips improve the clamping effect and ensure good adhesion between the first contact end of the connecting piece and the first ceramic piece.

[0008] Preferably, the top of the shaping base plate is provided with a threaded hole, and a drive screw is threadedly installed in the threaded hole. The drive screw is threadedly installed between itself and the shaping base plate, which facilitates the disassembly of the drive screw.

[0009] Preferably, the drive screw is vertically mounted on the shaping base plate, with the lower end of the drive screw connected to the shaping base plate and the upper end of the drive screw equipped with a drive handle.

[0010] Preferably, the first and second mating ends of the connecting piece are configured with an arched structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model uses a fixed pressure block to press the first contact end of the connecting piece, ensuring good contact between the first contact end and the first ceramic sheet, and pressing the first ceramic sheet firmly against the base plate, so that the first contact end of the connecting piece, the first ceramic sheet, and the base plate are tightly fitted together. At the same time, since the pressing surfaces of the fixed pressure block and the elastic pressure block are parallel and opposite, while the fixed pressure block is pressing down, the elastic pressure block presses the second contact end, ensuring good contact between the second contact end and the core, and pressing the core firmly against the electrode, the electrode firmly against the second ceramic sheet, and the second ceramic sheet firmly against the base plate. Through the transmission of force, the second contact end of the connecting piece, the core, the electrode, the second ceramic sheet, and the base plate are tightly fitted together, thereby avoiding the problem of poor fit caused by the toughness and rebound of the electrode. Through this structure, this utility model ensures that both ends of the connecting piece are well fitted with the first ceramic sheet and the core at the same time during molding, overcomes the toughness and rebound of the electrode, and improves the sintering and welding quality in subsequent processes.

[0013] 2. Since the die is the core component of the rectifier module and its material is relatively fragile, an elastic pressure block is used to press it down, providing adaptive pressure to ensure a tight fit without damaging the die.

[0014] 3. This utility model has a simple overall structure, reasonable design, convenient pressing operation, and is practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure during bridge core assembly.

[0016] Figure 2 This is a schematic diagram of the connecting piece.

[0017] Figure 3 This is a schematic diagram of the electrode structure;

[0018] Figure 4 This is a schematic diagram of the shaping state of this utility model;

[0019] Figure 5 This is a cross-sectional view of the shaping device of this utility model;

[0020] Figure 6 for Figure 5 Enlarged view of part A.

[0021] The components include: 1. base plate; 2. first ceramic plate; 3. connecting plate; 301. first bonding end; 302. second bonding end; 303. arched structure; 4. second ceramic plate; 5. pole piece; 6. tube core; 7. pressure strip; 8. shaping seat plate; 9. drive screw; 10. limit block; 11. movable pressure column; 12. spring; 13. pressure plate; 14. threaded hole; 15. through hole; and 16. drive handle. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and not for limiting the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0023] like Figure 1-6 As shown, a shaping device for mounting a rectifier module bridge core includes a shaping base plate 8. The top of the shaping base plate 8 is provided with a threaded hole 14, and a drive screw 9 is installed in the threaded hole 14. The drive screw 9 is vertically mounted on the shaping base plate 8, and the lower end of the drive screw 9 is connected to the shaping base plate 8. A drive handle 16 is provided at the upper end of the drive screw 9. The shaping base plate 8 is provided with a pressing part for pressing down the connecting piece 3. The pressing part includes a fixed pressing block and an elastic pressing block. The fixed pressing block is located at one end of the shaping base plate 8, and the elastic pressing block is located at the other end of the shaping base plate 8. The pressing surfaces of the fixed pressing block and the elastic pressing block are parallel and opposite to each other. The connecting piece 3 has a first contact end 301 and a second contact end 302. An arched structure 303 is provided between the first contact end 301 and the second contact end 302 of the connecting piece 3. The fixed pressing block is in pressure contact with the first contact end 301, and the elastic pressing block is in pressure contact with the second contact end 302. The first fitting end 301 presses against the first ceramic piece under pressure and presses the first ceramic piece 2 against the base plate 1. The second fitting end 302 presses against the tube core under pressure and sequentially presses the tube core 6 against the electrode 5, the electrode 5 against the second ceramic piece 4, and the second ceramic piece 4 against the base plate 1. The fixed pressure block includes multiple pressure strips 7 arranged vertically at the bottom of the shaping base plate 8. The elastic pressure block includes a movable pressure column 11 and a spring 12. The shaping base plate 8 is provided with a through hole 15 to facilitate the passage of the movable pressure column 11. The upper end of the movable pressure column 11 passes through the through hole 15 and is provided with a limiting block 10. The limiting block 10 contacts the top surface of the shaping base plate 8. The lower end of the movable pressure column 11 is provided with a pressure plate 13 that contacts the second fitting end 302 of the connecting piece 3. The pressure plate 13 is circular and the pressure surface of the pressure plate 13 is flat. The outer periphery of the movable pressure column 11 is provided with a spring 12 between the pressure plate 13 and the shaping base plate 8.

[0024] The specific working process and principle of this utility model are as follows: During mold assembly, a first ceramic plate 2 and a second ceramic plate 4 are placed on the base plate 1, an electrode plate 5 is placed on the second ceramic plate 4, and a core 6 is placed on the electrode plate 5. Then, a connecting piece 3 is placed, with one end of the connecting piece 3 placed on the first ceramic plate 2 and the other end placed on the core 6. At the same time, solder paste is applied or solder sheets are arranged between the base plate 1 and the first ceramic plate 2, between the base plate 1 and the second ceramic plate 4, between the second ceramic plate 4 and the electrode plate 5, between the electrode plate 5 and the core 6, between the connecting piece 3 and the first ceramic plate 2, and between the connecting piece 3 and the core 6. Then, the drive screw 9 is threadedly connected to the shaping base plate 8. By gripping the drive handle 16 and placing it on the connecting piece 3, the fixed pressure block contacts the first ceramic plate 2, and the elastic pressure block contacts the core 6. Then, by gripping the drive handle 16 and pressing, the fixed pressure block presses the connecting piece. The first fitting end 301 of the connecting piece 3 ensures good adhesion between the first fitting end 301 and the first ceramic piece 2, and presses the first ceramic piece 2 firmly against the base plate 1, so that the first fitting end 301 of the connecting piece 3, the first ceramic piece 2, and the base plate 1 are tightly fitted together. At the same time, since the pressing surfaces of the fixed pressure block and the elastic pressure block are parallel and opposite, while the fixed pressure block is pressing down, the elastic pressure block presses the second fitting end 302, ensuring good adhesion between the second fitting end 302 and the core 6, and presses the core 6 firmly against the electrode 5, the electrode 5 firmly against the second ceramic piece 4, and the second ceramic piece 4 firmly against the base plate 1. Through the transmission of force, the second fitting end 302 of the connecting piece 3, the core 6, the electrode 5, the second ceramic piece 4, and the base plate 1 are tightly fitted together, thereby completing the shaping during the molding process. Finally, after molding other components, the bridge core is sintered and welded together.

[0025] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A shaping device for mounting a rectifier module bridge core, characterized in that: The device includes a shaping base plate, which has a pressing part for pressing a connecting piece. The pressing part includes a fixed pressing block and an elastic pressing block. The fixed pressing block is located at one end of the shaping base plate, and the elastic pressing block is located at the other end of the shaping base plate. The pressing surfaces of the fixed pressing block and the elastic pressing block are parallel and opposite to each other. The connecting piece has a first contact end and a second contact end. The fixed pressing block is in pressure contact with the first contact end, and the elastic pressing block is in pressure contact with the second contact end. The first bonding end presses against the first ceramic sheet under pressure and presses the first ceramic sheet tightly against the base plate. The second bonding end presses against the core under pressure and sequentially presses the core against the electrode, the electrode against the second ceramic sheet, and the second ceramic sheet against the base plate.

2. The rectifier module bridge core mounting jig according to claim 1, characterized by: The elastic pressure block includes a movable pressure column and a spring. The shaping base plate has a through hole for the movable pressure column to pass through. The upper end of the movable pressure column passes through the through hole and is provided with a limiting block. The limiting block contacts the top surface of the shaping base plate. The lower end of the movable pressure column is provided with a pressure plate that contacts the second fitting end of the connecting piece. The pressure plate is circular and the pressing surface of the pressure plate is flat. A spring is provided on the outer periphery of the movable pressure column between the pressure plate and the shaping base plate.

3. The shaping device for rectifier module bridge core assembly according to claim 1, characterized in that: The fixing block includes multiple pressure strips arranged vertically at the bottom of the shaping base plate.

4. The shaping device for rectifier module bridge core assembly according to claim 1, characterized in that: The top of the shaping base plate is provided with a threaded hole, and a drive screw is installed in the threaded hole.

5. The shaping device for rectifier module bridge core assembly according to claim 4, characterized in that: The drive screw is vertically mounted on the shaping base plate, with its lower end connected to the shaping base plate and its upper end equipped with a drive handle.

6. The shaping device for rectifier module bridge core assembly according to claim 1, characterized in that: The first and second fitting ends of the connecting piece are configured with an arched structure.

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