Car scale block welding limiting tool capable of calibrating PIN direction

Abstract

The utility model discloses a car scale block welding limiting tool capable of calibrating the direction of a PIN needle, which relates to the technical field of car scale block welding, and comprises a welding limiting unit, a calibration assembly, a first fixing assembly arranged on one side of the calibration assembly, and a second fixing assembly arranged on one side of the first fixing assembly, the main body assembly is arranged between the first fixing assembly and the second fixing assembly; the calibration assembly comprises a calibration frame arranged on one side of the main body assembly, a first calibration block arranged on one side of the calibration frame, and a second calibration block arranged on one side of the first calibration block. The beneficial effects of the utility model are that through the cooperation of the calibration assembly and the two groups of fixing assemblies, the uniformity and the standard of the verticality, the accuracy of the position degree and the consistency of the thickness of a welding layer after each PIN is welded with the DBC board can be ensured, and the position of the DBC board can be effectively positioned, so that the production efficiency is improved. And the transmission of the IGBT module keeps certain stability.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle scale block welding, in particular to a vehicle scale block welding limiting tool capable of calibrating the direction of a PIN needle. Background Art

[0002] Insulated Gate Bipolar Transistor (IGBT) is the most advanced power semiconductor device among the third generation of power electronic devices. It has the advantages of high frequency, high voltage, and high current. It is a core device in the fields of flexible AC / DC transmission, new energy generation, and power quality management. It has been widely used in related industries.

[0003] For example, in IGBT module packaging, welding is usually used to fix the pins to the specified position to achieve electrical and signal transmission. However, for an automotive-grade IGBT module, the traditional welding method cannot ensure that the verticality of each pin and the direct bonded copper ceramic substrate (DBC) remain uniform, the position remains accurate, and the thickness of the solder layer remains consistent after welding. At the same time, since the position of the DBC board cannot be effectively positioned, the stability of the IGBT module transmission is affected.

[0004] Therefore, in order to solve the above problems, this solution proposes a vehicle scale block welding limit fixture that can calibrate the PIN needle direction. Summary of the invention

[0005] In view of the above-mentioned prior art problems, the present utility model is proposed.

[0006] The utility model aims to provide a vehicle scale block welding limit fixture which can calibrate the direction of the PIN needle, and aims to solve the problems of uneven verticality, inaccurate position, inconsistent weld layer thickness and invalid positioning of the DBC plate after welding of the PIN needle and the DBC plate caused by the traditional welding method.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a vehicle scale block welding limit fixture capable of calibrating the direction of a PIN needle, comprising a welding limit unit, including a calibration component, a first fixing component arranged on one side of the calibration component, a second fixing component arranged on one side of the first fixing component, and a main body component arranged between the first fixing component and the second fixing component;

[0008] The calibration component includes a calibration frame arranged on one side of the main component, a first calibration block arranged on one side of the calibration frame, and a second calibration block arranged on one side of the first calibration block.

[0009] As an optimal solution of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction of the utility model, the first fixing component includes an upper pressure plate, mounting columns distributed on one side of the upper pressure plate, and positioning pins symmetrically arranged on both sides of the upper pressure plate.

[0010] As an optimal solution of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction of the utility model, the second fixing component includes a welding support plate, fixing buckles symmetrically arranged on one side of the welding support plate, and Pinfin circular holes arranged on one side of the welding support plate.

[0011] As a preferred solution of the vehicle scale block welding limiting tooling capable of calibrating the PIN needle direction of the utility model, the calibration frame includes a positioning through hole group distributed thereon, and a first heat dissipation through hole hollowly arranged thereon.

[0012] As a preferred solution of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction of the utility model, wherein: the first calibration block includes a calibration through hole group distributed thereon, and a second heat dissipation through hole hollowly arranged thereon.

[0013] As an optimal solution of the vehicle scale block welding limit tooling that can calibrate the PIN needle direction of the utility model, the second calibration block includes an area block covering one side of the calibration through hole, a calibration groove group opened on one side of the area block, and a connecting handle fixedly connected to one side of the area block.

[0014] As an optimal solution of the vehicle scale block welding limit tooling that can calibrate the direction of the PIN needle of the utility model, the main component includes a Pinfin base plate, a DBC plate arranged on one side of the Pinfin base plate, and a PIN needle arranged on one side of the calibration component; a group of DBC plates corresponds to a group of calibration components.

[0015] As a preferred solution of the vehicle scale block welding limiting tooling capable of calibrating the direction of the PIN needle of the utility model, the PIN needle is simultaneously arranged to penetrate the calibration through hole and the positioning through hole.

[0016] As a preferred solution of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction of the utility model, the fixing buckle comprises a barbed hook-shaped block and an auxiliary fixing block hinged to the block.

[0017] The beneficial effects of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction of the utility model are: through the cooperation of the calibration component and the two groups of fixing components, it can ensure that the verticality of each PIN needle and the DBC board after welding remains uniform, the position remains accurate, and the thickness of the welding layer remains consistent, and at the same time, the position of the DBC board can be effectively positioned to ensure that the IGBT module transmission maintains a certain stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is an overall three-dimensional diagram of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction in the utility model.

[0020] Figure 2 It is a schematic diagram of the specific structure of the calibration component of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction in the utility model.

[0021] Figure 3 It is a schematic diagram of the specific structure of the main body component of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction in the utility model.

[0022] Figure 4 It is a schematic diagram of the specific structure of the first fixing component of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction in the utility model.

[0023] Figure 5 It is a schematic diagram of the specific structure of the second fixing component of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction in the utility model.

[0024] Figure 6 This is a schematic diagram of the specific structure from another angle of the calibration component of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction in the utility model.

[0025] Figure 7 This is a schematic diagram of the specific structure of the first calibration block of the vehicle scale block welding limit tooling capable of calibrating the PIN needle direction in the utility model.

[0026] Figure 8 This is a schematic diagram of the specific structure of the second calibration block of the vehicle scale block welding limit tooling that can calibrate the PIN needle direction in the utility model.

[0027] Fig. 9 This is an enlarged view of the local structure of the vehicle scale block welding limit tool A that can calibrate the PIN needle direction in the utility model. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1~Figure 3 , which is the first embodiment of the utility model, and provides a vehicle scale block welding limit fixture capable of calibrating the direction of a PIN needle, comprising a welding limit unit 100, comprising a calibration component 101, a first fixing component 102 disposed on one side of the calibration component 101, a second fixing component 103 disposed on one side of the first fixing component 102, and a main body component 104 disposed between the first fixing component 102 and the second fixing component 103;

[0033] The calibration assembly 101 includes a calibration frame 101a arranged at one side of the main assembly 104, a first calibration block 101b arranged at one side of the calibration frame 101a, and a second calibration block 101c arranged at one side of the first calibration block 101b.

[0034] Furthermore, the main component 104 includes a Pinfin base plate 104a, a DBC plate 104b arranged on one side of the Pinfin base plate 104a, and a PIN pin 104c arranged on one side of the calibration component 101; a group of DBC plates 104b corresponds to a group of calibration components 101.

[0035] It should be noted that welding pieces are respectively provided on the DBC board 104b.

[0036] Preferably, the calibration frame 101a is used to calibrate, adjust and fix the working position of the welding piece and the DBC board 104b, and the calibration frame 101a allows the PIN needle 104c to pass through it to correspond to the position of the welding piece; the first calibration block 101b follows the calibration frame 101a and is sleeved on the outside of the local area section of the PIN needle 104c, and the second calibration block 101c follows the first calibration block 101b and is sleeved on the outside of the top area section of the PIN needle 104c and the top of the PIN needle 104c is abutted against the second calibration block 101c. The first calibration block 101b and the second calibration block 101c act on the required number of PIN needles 104c in the utility model at the same time, which can not only prevent the PIN needle 104c from being deflected during the welding process, but also ensure the verticality of the PIN needle 104c extending from the top, and further ensure that each PIN needle 104c will not be randomly offset during the welding process and deformed after welding.

[0037] When in use, first, the first fixed component 102 is inverted on the assembly table, and the second calibration block 101c and the first calibration block 101b are respectively superimposed and fixedly connected with the three sets of fixedly connected calibration frames 101a in sequence, and the entire calibration component 101 is placed on the first fixed component 102 and the two are tightly connected, and the PIN needle 104c is inserted into the second calibration block 101c after passing through the calibration frame 101a and the first calibration block 101b in sequence, so that a plurality of PIN needles 104c are assembled on the calibration component 101, and then the calibration frame 101a and the first calibration block 101b are removed. On one side of 101a, the DBC board 104b and the welding piece are placed into the calibration component 101 in sequence, and finally the second fixing component 103 is aligned with the Pinfin base plate 104a on one side of the DBC board 104b and then fixed together. Positioning and assembly are performed through the first fixing component 102 to complete the overall assembly of the welding limiting unit 100. The welding piece, DBC board and PIN needle 104c can be calibrated and limited at the same time, ensuring that the verticality of each PIN needle 104c and the DBC board before and after welding is uniformly maintained without deviation, and the relative position is also uniformly maintained with absolute accuracy.

[0038] In summary, the utility model can ensure that the verticality of each PIN pin and the DBC board after welding remains uniform and standard, the position remains accurate, and the thickness of the solder layer remains consistent through the cooperation of the calibration component and the two sets of fixing components. At the same time, the position of the DBC board can be effectively positioned, so that the transmission of the IGBT module maintains a certain stability.

[0039] Example 2

[0040] Reference Figure 1 to Figure 8, which is the second embodiment of the utility model, comprises a welding limiting unit 100, comprising a calibration component 101, a first fixing component 102 arranged at one side of the calibration component 101, a second fixing component 103 arranged at one side of the first fixing component 102, and a main body component 104 arranged between the first fixing component 102 and the second fixing component 103;

[0041] The calibration assembly 101 includes a calibration frame 101a arranged at one side of the main assembly 104, a first calibration block 101b arranged at one side of the calibration frame 101a, and a second calibration block 101c arranged at one side of the first calibration block 101b.

[0042] Furthermore, the first fixing assembly 102 includes an upper pressing plate 102a, mounting columns 102b distributed on one side of the upper pressing plate 102a, and positioning pins 102c symmetrically arranged on both sides of the upper pressing plate 102a.

[0043] Furthermore, the second fixing assembly 103 includes a welding support plate 103a, fixing buckles 103b symmetrically arranged on one side of the welding support plate 103a, and Pinfin circular holes 103c arranged in an array on one side of the welding support plate 103a.

[0044] Furthermore, the calibration frame 101a includes a group of positioning through holes 101a-1 distributed thereon, and a first heat dissipation through hole 101a-2 hollowly arranged thereon.

[0045] Furthermore, the first calibration block 101b includes a group of calibration through holes 101b-1 distributed thereon, and a second heat dissipation through hole 101b-2 hollowly arranged thereon.

[0046] Furthermore, the second calibration block 101c includes a region block 101c-1 covering one side of the calibration through hole 101b-1, a calibration groove 101c-2 group opened on one side of the region block 101c-1, and a connecting handle 101c-3 fixedly connected to one side of the region block 101c-1.

[0047] Furthermore, the main component 104 includes a Pinfin base plate 104a, a DBC plate 104b arranged on one side of the Pinfin base plate 104a, and a PIN pin 104c arranged on one side of the calibration component 101; a group of DBC plates 104b corresponds to a group of calibration components 101.

[0048] Furthermore, the PIN needle 104c is simultaneously disposed through the calibration through hole 101b-1 and the positioning through hole 101a-1.

[0049] It should be noted that nine groups of mounting posts 102b are provided in this embodiment. The mounting posts 102b are penetrated by M2 screws and are fastened to the calibration assembly 101. The calibration frame 101a is provided with threaded holes adapted to the M2 screws. One end of the positioning pin 102c is fastened to the upper pressure plate 102 by an M5 hexagon socket screw. The positioning pin 102c successively passes through the positioning holes at the corresponding positions of the Pinfin bottom plate 104a and the welding support plate 103a to achieve unified limiting. The upper pressure plate 102a, Pinfin bottom plate 104a and the welding support plate 103a are fastened to the upper pressure plate 102a, Pinfin bottom plate 104a and the welding support plate 103a. The plate 104a and the welding support plate 103a are connected as a whole; three groups of regional blocks 101c-1 are arranged, which are integrally formed with the connecting handle 101c-3. The connecting handle 101c-3 is not only convenient for taking the second calibration block 101c during disassembly and assembly, but also prevents the DBC board 104b from deviating from the calibration component 101 directly through the first heat dissipation through hole 101a-2 and the second heat dissipation through hole 101b-2; one side of the calibration groove 101c-2 is not penetrated, so that the PIN needle 104c just abuts against one side of the calibration groove 101c-2 when installed.

[0050] In this embodiment, the second calibration block 101c, the first calibration block 101b and the calibration frame 101a are respectively provided in three groups, and the three groups of calibration frames 101a are fixedly connected as a whole, which is convenient for directly placing and limiting the overall position of the first calibration block 101b and the second calibration block 101c.

[0051] When in use, firstly, the first fixing assembly 102 is inverted on the assembly table, with the mounting column 102b and the positioning pin 102c facing upwards and not in contact with the assembly table, and the second calibration block 101c and the first calibration block 101b are respectively superimposed and fixedly connected with the three groups of fixedly connected calibration frames 101a in sequence, and the entire calibration assembly 101 is placed between the upper pressing plate 102a and the positioning pin 102c, and then the threaded holes on one side of the first calibration block 101b are aligned with each group of mounting columns 102b and fastened by M2 screws;

[0052] Secondly, the PIN pin 104c is sequentially passed through the positioning through hole 101a-1 of the calibration frame 101a and the calibration through hole 101b-1 of the first calibration block 101b, and then inserted into the calibration groove 101c-2 of the second calibration block 101c, so that a plurality of PIN pins 104c are assembled on the calibration assembly 101;

[0053] Then, the DBC board 104b and the welding piece are sequentially placed into the calibration assembly 101 from one side of the calibration frame 101a, and finally, the Pinfin circular hole 103c on the welding support plate 103a is aligned with the Pinfin bottom plate 104a on one side of the DBC board 104b and then plugged and fixed;

[0054] At the same time, the positioning pin 102c successively penetrates the positioning holes at the corresponding positions of the Pinfin bottom plate 104a and the welding support plate 103a for positioning and assembly, thereby completing the overall assembly of the welding limiting unit 100.

[0055] In summary, the utility model can calibrate and limit the PIN needle 104c and the welding piece and the DBC board at the same time through the positioning through hole 101a-1, the calibration through hole 101b-1 and the calibration groove 101c-2, thereby ensuring that the verticality of each PIN needle 104c and the DBC board before and after welding is uniformly maintained without deviation, and the relative position is also uniformly maintained with absolute accuracy.

[0056] Example 3

[0057] Reference Figure 1 , Figure 4 , Figure 5 and Fig. 9 , which is the third embodiment of the utility model, comprises a welding limiting unit 100, comprising a calibration component 101, a first fixing component 102 disposed on one side of the calibration component 101, a second fixing component 103 disposed on one side of the first fixing component 102, and a main body component 104 disposed between the first fixing component 102 and the second fixing component 103;

[0058] The calibration assembly 101 includes a calibration frame 101a arranged at one side of the main assembly 104, a first calibration block 101b arranged at one side of the calibration frame 101a, and a second calibration block 101c arranged at one side of the first calibration block 101b.

[0059] Furthermore, the first fixing assembly 102 includes an upper pressing plate 102a, mounting columns 102b distributed on one side of the upper pressing plate 102a, and positioning pins 102c symmetrically arranged on both sides of the upper pressing plate 102a.

[0060] Furthermore, the second fixing assembly 103 includes a welding support plate 103a, fixing buckles 103b symmetrically arranged on one side of the welding support plate 103a, and Pinfin circular holes 103c arranged in an array on one side of the welding support plate 103a.

[0061] Furthermore, the fixing buckle 103b includes a hook-shaped clamping block 103b-1 and an auxiliary fixing block 103b-2 hinged to the clamping block 103b-1.

[0062] It should be noted that the auxiliary fixing blocks 103b-2 are symmetrically arranged on one side of the welding support plate 103a, and the bottom of the auxiliary fixing blocks 103b-2 and the top of the welding support plate 103a are fixedly connected. Each group of auxiliary fixing blocks 103b-2 is hinged to a group of clamping blocks 103b-1 through a hinge shaft, and a group of torsion springs are sleeved on the outside of the hinge shaft, and the clamping blocks 103b-1 are sleeved on the outside of the torsion springs.

[0063] Preferably, the hook-shaped block 103b-1 can be moved back and forth through the elastic reset of the torsion spring. When the first fixing component 102, the calibration component 101 and the main body component 104 are connected to the welding support plate 103a as a whole, the hook portion of the block 103b-1 can clamp the top of the upper pressure plate 102a. With the help of the elastic force of the torsion spring, the upper pressure plate 102a is clamped, which also facilitates the successful removal of the first fixing component 102, the calibration component 101 and the main body component 104 from the second fixing component 103.

[0064] When in use, the first fixing assembly 102, the calibration assembly 101 and the main assembly 104 are directly placed on the welding support plate 103a as a whole, and positioned by the positioning pin 102c. The two groups of clamping blocks 103b-1 are squeezed by the torsion spring and forced to move away from each other until the first fixing assembly 102, the calibration assembly 101 and the main assembly 104 are completely placed on the welding support plate 103a. After that, the torsion spring drives the clamping block 103b-1 to automatically reset, and the barb part of the clamping block 103b-1 just clamps the top of the upper pressing plate 102a.

[0065] When welding is completed, if the entire device needs to be disassembled, it can be achieved by simply rotating the two groups of blocks 103b-1 around the hinge axis and moving away from each other.

[0066] In summary, the present invention can achieve the fastening and locking of the welding limiting unit 100 after assembly through the fixing buckle 103b, and also facilitates unlocking and disassembling thereof.

[0067] It is important to note that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A vehicle scale block welding limit fixture capable of calibrating the direction of a PIN needle, characterized in that: include, A welding limiting unit (100), comprising a calibration component (101), a first fixing component (102) arranged on one side of the calibration component (101), a second fixing component (103) arranged on one side of the first fixing component (102), and a main body component (104) arranged between the first fixing component (102) and the second fixing component (103); The calibration component (101) comprises a calibration frame (101a) arranged on one side of the main component (104), a first calibration block (101b) arranged on one side of the calibration frame (101a), and a second calibration block (101c) arranged on one side of the first calibration block (101b).

2. The vehicle scale block welding limit fixture capable of calibrating the PIN needle direction as claimed in claim 1, characterized in that: The first fixing assembly (102) comprises an upper pressing plate (102a), mounting columns (102b) distributed on one side of the upper pressing plate (102a), and positioning pins (102c) symmetrically arranged on both sides of the upper pressing plate (102a).

3. The vehicle scale block welding limit fixture capable of calibrating the PIN needle direction as claimed in claim 1 or 2, characterized in that: The second fixing assembly (103) comprises a welding support plate (103a), fixing buckles (103b) symmetrically arranged on one side of the welding support plate (103a), and Pinfin circular holes (103c) arranged in an array on one side of the welding support plate (103a).

4. The vehicle scale block welding limit fixture capable of calibrating the PIN needle direction as claimed in claim 1, characterized in that: The calibration frame (101a) comprises a group of positioning through holes (101a-1) distributed thereon, and a first heat dissipation through hole (101a-2) hollowly arranged thereon.

5. The vehicle scale block welding limit fixture capable of calibrating the PIN needle direction as claimed in claim 4, characterized in that: The first calibration block (101b) comprises a group of calibration through holes (101b-1) distributed thereon, and a second heat dissipation through hole (101b-2) hollowly arranged thereon.

6. The vehicle scale block welding limit fixture capable of calibrating the PIN needle direction as claimed in claim 5, characterized in that: The second calibration block (101c) comprises a region block (101c-1) covering one side of the calibration through hole (101b-1), a calibration groove (101c-2) group opened on one side of the region block (101c-1), and a connection handle (101c-3) having one side fixedly connected to one side of the region block (101c-1).

7. The vehicle scale block welding limiter capable of calibrating the PIN needle direction as claimed in claim 1, characterized in that: The main body component (104) comprises a Pinfin base plate (104a), a DBC plate (104b) arranged on one side of the Pinfin base plate (104a), and a PIN pin (104c) arranged on one side of the calibration component (101); a group of the DBC plates (104b) corresponds to a group of the calibration components (101).

8. The vehicle scale block welding limit fixture capable of calibrating the PIN needle direction as claimed in claim 5 or 6, characterized in that: The PIN needle (104c) is simultaneously arranged to penetrate the calibration through hole (101b-1) and the positioning through hole (101a-1).

9. The vehicle scale block welding limiter capable of calibrating the PIN needle direction as claimed in claim 3, characterized in that: The fixing buckle (103b) comprises a barbed hook-shaped clamping block (103b-1) and an auxiliary fixing block (103b-2) hinged to the clamping block (103b-1).

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