IGBT module automatic production line jig and IGBT module automatic production line

Abstract

The utility model discloses an IGBT (Insulated Gate Bipolar Translator) module automatic production line jig, which is characterized by comprising a sub-jig, the two opposite sides of the upper surface of the sub-jig are provided with at least one pair of buckles. The buckle comprises a fixed block fixed on the upper surface of the sub-jig, the fixed block is provided with a slot penetrating through two opposite side surfaces of the fixed block, a product pressing block is detachably inserted into the slot, and the product pressing block is used for pressing the IGBT module; a plurality of turnover positioning holes used for being connected with a turnover mechanism of a machine table in an inserted mode are formed in the side face of the sub-jig. An operator installs the module when the buckle faces upwards, so that the module can be conveniently installed and fixed; when the bottom plate bears the sub-jig to move to the welding position, the sub-jig is turned over to enable the buckle to face downwards through the turnover mechanism, the IGBT module is fixed through the buckle so that the IGBT module can be prevented from falling off, and welding from bottom to top can be achieved at the moment.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor devices, and in particular to an automated production line fixture for IGBT modules and an automated production line for IGBT modules. Background Technology

[0002] IGBTs (Insulated Gate Bipolar Transistors) are widely used as power semiconductor devices in electric vehicles and new energy equipment. Selective wave soldering is now used to solder components from bottom to top. During soldering, excess solder balls fall with gravity, thus avoiding a large number of solder balls remaining on the module.

[0003] To achieve bottom-up welding, the IGBT module needs to be reliably fixed in an inverted state. Therefore, providing an automated IGBT module production line fixture and an automated IGBT module production line, so as to achieve reliable fixing and welding of the IGBT module even in an inverted state, is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide an automated production line fixture and an automated production line for IGBT modules to solve the above problems.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A fixture for an automated production line of IGBT modules, characterized in that,

[0007] The device includes a sub-fixture; the upper surface of the sub-fixture is provided with at least one pair of buckles, and a clamping gap is formed between the two buckles; each buckle includes a fixing block fixed to the upper surface of the sub-fixture, the fixing block having a slot penetrating two opposite sides of the fixing block, and limiting holes communicating with the slots being respectively provided on the other opposite sides of the fixing block; a limiting block is fixedly inserted into the limiting hole, and a limiting ball is provided at one end of the limiting block facing the slot;

[0008] A product pressing block is detachably inserted into the slot. The product pressing block includes a protrusion extending out of the slot for abutting and fixing the product and an embedded part accommodated in the slot. The side of the embedded part is provided with a plurality of pairs of limiting grooves for limiting the limiting balls.

[0009] The sub-fixture has multiple flip positioning holes for insertion into the flipping mechanism of the machine tool.

[0010] Preferably, the upper surface of the sub-fixture is further provided with a transition copper point plate, and the transition copper point plate is electrically connected to a transition cable and a transition PCB board in sequence;

[0011] The upper surface of the fixture is provided with multiple test positioning holes, and a test bushing is fitted inside the test positioning holes. The test bushing includes a first bushing body and a first fixing screw for fixing the first bushing body. The first bushing body includes a first bushing cylinder and a first bushing flange provided at one end of the first bushing cylinder. At least two first arc-shaped grooves are formed on the outer periphery of the first bushing flange. One end of the first fixing screw is provided with a first screw flange, and a portion of the first screw flange can extend into the first arc-shaped groove and abut against the first arc-shaped groove.

[0012] Preferably, it also includes a base plate, the base plate having a clearance hole, and a plurality of sub-jig support columns being arranged around the clearance hole;

[0013] The top of the sub-jig support column is formed with a support platform, and the support platform is provided with a positioning part; the upper surfaces of all the support platforms are on the same plane;

[0014] The sub-fixture has a positioning hole for passing through the positioning part at the position corresponding to the positioning part, and the sub-fixture abuts against the support platform;

[0015] Preferably, a support block is fixedly provided on the edge of the clearance hole corresponding to the position of the buckle, and a solder shield is connected between the two support blocks. The solder shield has multiple solder holes.

[0016] Preferably, a foolproof post is provided on one side of the upper surface of the base plate, and a limiting part is formed on the opposite side of the foolproof post of the sub-fixture. The height of the foolproof post is greater than the height of the bottom surface of the sub-fixture. If the sub-fixture is reversed, the foolproof post and the limiting part will abut against each other, making it impossible to install the sub-fixture.

[0017] At least one of the fixing blocks on one side of the sub-fixture is provided with a foolproof block facing the inside of the sub-fixture; the center of the upper surface of the sub-fixture is a product installation area, and multiple product positioning pins are provided at intervals around the product installation area.

[0018] Preferably, a base plate nameplate is provided on the upper surface edge of the base plate, and a base plate IC card is provided on the base plate at the position corresponding to the base plate nameplate; a sub-fixture nameplate is provided on the upper surface edge of the sub-fixture, and a sub-fixture IC card is provided on the sub-fixture at the position corresponding to the sub-fixture nameplate.

[0019] Preferably, the bottom surface of the base plate is provided with wear-resistant strips.

[0020] Preferably, a buffer block is provided on at least one side of the base plate.

[0021] Preferably, a base plate positioning block is provided on the lower surface of the base plate, and a lifting positioning hole is provided on the base plate. When the base plate moves to the processing position, the lifting positioning hole is inserted into the lifting positioning mechanism of the machine tool.

[0022] A base plate bushing is fitted inside the lifting positioning hole; the base plate bushing includes a second bushing body and a second fixing screw for fixing the second bushing body. The second bushing body includes a second bushing cylinder and a second bushing flange at one end of the second bushing cylinder. At least two second arc-shaped grooves are formed on the outer periphery of the second bushing flange. A second screw flange is provided at one end of the second fixing screw, and a portion of the second screw flange can extend into the second arc-shaped groove and abut against the second arc-shaped groove.

[0023] An automated production line for IGBT modules, characterized in that it includes the IGBT module automated production line fixture described above.

[0024] Compared with the prior art, the present invention has the following advantages: by flipping the sub-girder with the buckle facing down through the flipping mechanism, the IGBT module is fixed by the buckle to prevent the IGBT module from falling off, and welding from bottom to top can be achieved at this time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0027] Figure 1 A schematic diagram of the overall structure of an automated production line fixture for IGBT modules provided in this embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the base plate structure of an automated production line fixture for IGBT modules provided for an embodiment of this utility model;

[0029] Figure 3An exploded view of the buckle of a fixture for an automated production line of IGBT modules provided in this embodiment of the present invention;

[0030] Figure 4 An exploded top view of the buckle of a fixture for an automated production line of IGBT modules provided in this embodiment of the present invention;

[0031] Figure 5 A bottom view of the base plate of an automated production line fixture for IGBT modules provided in this embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the structure of the first bushing body and the first bushing screw of an automated production line fixture for IGBT modules provided in this embodiment of the present invention;

[0033] Figure 7 A schematic diagram of the structure of the second bushing body and the second bushing screw of an automated production line fixture for IGBT modules provided in this embodiment of the present invention;

[0034] Figure 8 A schematic diagram of the overall structure of an automated production line fixture for IGBT modules provided in this embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of IGBT module installation in an automated production line fixture for IGBT modules, provided as an embodiment of the present invention.

[0036] Illustrations: 1. Base plate; 11. Clearance hole; 12. Sub-jig support column; 121. Support platform; 122. Positioning part; 13. Solder shield; 131. Support block; 132. Solder hole; 14. Anti-fooling column; 15. Base plate nameplate; 16. Wear-resistant strip; 17. Buffer block; 18. Base plate positioning block; 19. Lifting positioning hole; 191. First bushing body; 192. First fixing screw; 193. First bushing cylinder; 194. First bushing flange; 195. First arc groove; 196. First screw flange 2. Sub-fixture; 2a. Buckle; 2b. Adapter copper point plate; 2b1. Adapter cable; 2b2. Adapter PCB board; 21. Fixing block; 22. Product pressing block; 23. Limiting block; 24. Flip positioning hole; 25. Sub-fixture positioning hole; 26. Test positioning hole; 261. Second bushing body; 262. Second fixing screw; 263. Second bushing cylinder; 264. Second bushing flange; 265. Second arc groove; 266. Second screw flange; 27. Anti-fooling block; 28. Product positioning pin; 29. ​​Sub-fixture nameplate. Detailed Implementation

[0037] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0038] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0039] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] This utility model embodiment provides a fixture for an automated production line of IGBT modules, characterized in that...

[0041] The fixture includes a sub-fixture 2; the upper surface of the sub-fixture 2 is provided with at least one pair of snap fasteners 2a, and a clamping gap is formed between the two snap fasteners 2a; the snap fasteners 2a include a fixing block 21 fixed to the upper surface of the sub-fixture 2, the fixing block 21 is provided with a slot 211 that passes through the two opposite sides of the fixing block 21, and the other two opposite sides of the fixing block 21 are respectively provided with limiting holes 212 that communicate with the slots 211; a limiting block 23 is fixedly inserted into the limiting hole, and a limiting ball 231 is provided at one end of the limiting block 23 facing the slot 211;

[0042] A product pressing block 22 is detachably inserted into the slot 211. The product pressing block 22 includes a protrusion extending out of the slot for abutting and fixing the product and an embedded part accommodated in the slot. The side of the embedded part is provided with a plurality of limiting grooves 221 for limiting the limiting balls 231.

[0043] The fixture 2 has multiple flip positioning holes 24 for connecting with the flipping mechanism of the machine tool.

[0044] Preferably, the upper surface of the sub-fixture 2 is further provided with a transition copper point plate 2b, and the transition copper point plate 2b is electrically connected to the transition wire 2b1 and the transition PCB board 2b2 in sequence.

[0045] The upper surface of the fixture 2 is provided with a plurality of test positioning holes 26. A test bushing is fitted inside the test positioning holes. The test bushing includes a first bushing body 261 and a first fixing screw 262 for fixing the first bushing body 261. The first bushing body 261 includes a first bushing cylinder 263 and a first bushing flange 264 provided at one end of the first bushing cylinder 263. At least two first arc-shaped grooves 265 are provided on the outer periphery of the first bushing flange 264. A first screw flange 266 is provided at one end of the first fixing screw 262. A part of the first screw flange 266 can extend into the first arc-shaped groove 265 and abut against the first arc-shaped groove.

[0046] Preferably, it also includes a base plate 1, the base plate 1 having a clearance hole 11, and a plurality of sub-jig support columns 12 arranged around the clearance hole 11;

[0047] The top of the jig support column 12 is formed with a support platform 121, and the support platform is provided with a positioning part 122; the upper surfaces of all support platforms 121 are on the same plane.

[0048] The sub-fixture 2 has a sub-fixture positioning hole 25 for passing through the positioning part 122 at the position corresponding to the positioning part 122, and the sub-fixture 2 abuts against the support platform 121;

[0049] Preferably, support blocks 131 are fixedly provided at the edges of the clearance holes 11 corresponding to the positions of the buckles 2a, and a solder shielding plate 13 is connected between the two support blocks 131. The solder shielding plate 13 has multiple solder holes 132.

[0050] Preferably, a foolproof post 14 is provided on one side of the upper surface of the base plate 1, and a limiting part is formed on the opposite side of the foolproof post 14 in the sub-fixture 2. The height of the foolproof post 14 is greater than the height of the bottom surface of the sub-fixture 2; for example Figure 1 As shown, the left side of the sub-fixture 2 extends to the left from the sub-fixture positioning hole 25, and the distance of the extension is greater than the distance from the right sub-fixture positioning hole 25 to the anti-fool post 14. If the sub-fixture 2 is reversed, the anti-fool post 14 will abut against the limiting part, preventing the sub-fixture 2 from being installed. In a preferred embodiment of this application, the sub-fixture support post 12 and the corresponding sub-fixture positioning hole 25 are arranged in a rectangle. The effect is that if the sub-fixture 2 rotates 90° in its plane, it cannot be installed normally, thus achieving the anti-fool effect.

[0051] At least one fixing block 21 on one side of the sub-fixture 2 is provided with a foolproof block 27 facing the inside of the sub-fixture 2; the center of the upper surface of the sub-fixture 2 is the product installation area, and multiple product positioning pins 28 are provided at intervals around the product installation area. The foolproof block 27 is provided on one side of the sub-fixture 2, and a clearance groove is opened at the corresponding position of the IGBT module to prevent the IGBT module from being installed in the wrong direction when it is mounted on the sub-fixture 2.

[0052] Preferably, a base plate nameplate 15 is provided on the upper surface edge of the base plate 1, and a base plate IC card is provided on the base plate 1 at the position corresponding to the base plate nameplate 15; a sub-fixture nameplate 28 is provided on the upper surface edge of the sub-fixture 2, and a sub-fixture IC card is provided on the sub-fixture 2 at the position corresponding to the sub-fixture nameplate 29.

[0053] Preferably, the bottom surface of the base plate 1 is provided with wear-resistant strips 16. Preferably, the wear-resistant strips 16 are provided at the part of the base plate that contacts the machine tool, thereby obtaining better wear resistance and extending service life.

[0054] Preferably, a buffer block 17 is provided on at least one side of the base plate 1. Preferably, the buffer block 17 is located in front of or behind the base plate in the forward direction, forming a buffer when the two base plates 1 collide with each other, thus preventing damage to the fixture.

[0055] Preferably, a base plate positioning block 18 is provided on the lower surface of the base plate 1, and a lifting positioning hole 19 is provided on the base plate. A sensor is provided in the base plate positioning block 18. The machine tool obtains a signal that the base plate 1 has moved to the processing position through the sensor. Then the lifting positioning mechanism of the machine tool is raised and inserted into the lifting positioning hole 19 to fix the base plate 1.

[0056] A base plate bushing is fitted inside the lifting positioning hole; the base plate bushing includes a second bushing body 191 and a second fixing screw 192 for fixing the second bushing body 191. The second bushing body 191 includes a second bushing cylinder 193 and a second bushing flange 194 provided at one end of the second bushing cylinder 193. At least two second arc-shaped grooves are provided on the outer periphery of the second bushing flange 194. A second screw flange 196 is provided at one end of the second fixing screw 192. A part of the second screw flange 196 can extend into the second arc-shaped groove 195 and abut against the second arc-shaped groove 195.

[0057] In use, the sub-fixture 2 is initially positioned with the latch facing upwards. The operator places the IGBT module to be processed between the two fixing blocks 21, inserts the product pressure block 22 into the slot, and pushes it forward until the protrusion is inserted into the opening slot on the side of the IGBT module and abuts against it. At this time, the positioning ball of the limiting block 23 is engaged in the limiting groove, restricting the movement of the product pressure block 22 and thus preventing the IGBT module from falling off after flipping. Subsequently, the base plate 1 carries the sub-fixture 2 to the welding station of the machine. The machine's flipping mechanism inserts into the flipping positioning hole 24 of the sub-fixture 2, lifting and flipping the sub-fixture 2 and the IGBT module together. At this time, the IGBT module is placed downwards, allowing welding to be performed from bottom to top.

[0058] When soldering is performed using a tin spraying method, solder balls are prone to sticking to components around the solder joints, which can lead to damage to components and solder bridging. By using a high-temperature resistant synthetic stone to make a solder shield, solder holes are only opened at the corresponding solder joints. When tin spraying, solder balls that fall outside the solder joints are blocked by the solder shield, thus protecting the components and preventing solder bridging.

[0059] During testing, the test copper point board is electrically connected to the IGBT module via adapter cable 2b1 and adapter PCB 2b2. The testing equipment is equipped with a guide shaft and probes. During testing, the guide shaft of the testing equipment cooperates with the test bushing for positioning, and the probes of the testing equipment sequentially contact different copper points on the copper point board for testing. After the test is completed, the testing equipment automatically disconnects the connection between the adapter PCB 2b2 and the IGBT module. The testing equipment is positioned through test positioning holes and directly tests the soldered IGBT module on the sub-fixture via the adapter copper point board, adapter cable, and PCB board, without having to remove the IGBT module from the fixture.

[0060] Another embodiment of this application provides an automated production line for IGBT modules, characterized in that it includes the aforementioned automated production line fixture for IGBT modules.

[0061] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An IGBT module automatic production line jig, characterized in that, It comprises a sub-jig (2); the upper surface of the sub-jig (2) is provided with at least one pair of buckles (2a), and a clamping gap is formed between the two buckles (2a); the buckle (2a) comprises a fixed block (21) fixed on the upper surface of the sub-jig (2), the fixed block (21) is provided with a slot (211) penetrating through the opposite sides of the fixed block (21), and the opposite two sides of the fixed block (21) are respectively provided with a limiting hole (212) communicated with the slot (211); a limiting block (23) is fixedly inserted in the limiting hole, and one end of the limiting block (23) facing the slot (211) is provided with a limiting ball (231); The slot (211) is detachably connected with a product pressing block (22), the product pressing block (22) comprises a protruding part for abutting and fixing a product and an embedded part accommodated in the slot, and a plurality of limiting grooves (221) for limiting the limiting ball (231) are arranged on the side surface of the embedded part at intervals; A plurality of turnover positioning holes (24) for connecting with the turnover mechanism of the machine are arranged on the sub-jig (2).

2. The IGBT module automatic production line jig according to claim 1, wherein The upper surface of the sub-jig (2) is further provided with a copper dot adapter board (2b), and the copper dot adapter board (2b) is sequentially connected with an adapter wire (2b1) and an adapter PCB (2b2); The upper surface of the sub-jig (2) is provided with a plurality of test positioning holes (26), a test bushing is sleeved in the test positioning hole, the test bushing comprises a first bushing body (261) and a first fixing screw (262) for fixing the first bushing body (261), the first bushing body (261) comprises a first bushing cylinder (263) and a first bushing flange (264) arranged at one end of the first bushing cylinder (263), and at least two first arc grooves (265) are arranged on the outer periphery of the first bushing flange (264); one end of the first fixing screw (262) is provided with a first screw flange (266), and a part of the first screw flange (266) can extend into the first arc groove (265) and abut against the first arc groove.

3. The IGBT module automatic production line fixture of claim 1, wherein, It further comprises a bottom plate (1), the bottom plate (1) is provided with an avoiding hole (11), and a plurality of sub-jig supporting columns (12) are arranged around the avoiding hole (11); The top end of the sub-jig supporting column (12) forms a supporting platform (121), and the supporting platform is provided with a positioning part (122); the upper surfaces of all the supporting platforms (121) are on the same plane; The sub-jig (2) is provided with a sub-jig positioning hole (25) for penetrating the positioning part (122) at the position corresponding to the positioning part (122), and the sub-jig (2) abuts against the supporting platform (121).

4. The IGBT module automatic production line jig according to claim 3, characterized in that, The edges of the avoiding hole (11) correspond to the positions of the buckles (2a) and are respectively fixedly provided with support blocks (131), and a solder shielding plate (13) is connected between the two support blocks (131), and the solder shielding plate (13) is provided with a plurality of solder holes (132).

5. The IGBT module automatic production line jig of claim 3, wherein, A foolproof column (14) is arranged on one side of the upper surface of the bottom plate (1), and a limiting portion is formed on the opposite side of the foolproof column (14) of the sub-gripper (2), and the height of the foolproof column (14) is greater than the height of the bottom surface of the sub-gripper (2). At least one of the fixing blocks (21) on one side of the sub-gripper (2) is provided with a foolproof block (27) towards the inner side of the sub-gripper (2); the upper surface of the sub-gripper (2) is a product mounting area in the center, and a plurality of product positioning pins (28) are arranged at intervals around the product mounting area.

6. The IGBT module automatic production line fixture of claim 3, wherein, A bottom plate nameplate (15) is arranged on the edge of the upper surface of the bottom plate (1), and a bottom plate IC card is arranged on the bottom plate (1) corresponding to the position of the bottom plate nameplate (15); a sub-gripper nameplate (29) is arranged on the edge of the upper surface of the sub-gripper (2), and a sub-gripper IC card is arranged on the sub-gripper (2) corresponding to the position of the sub-gripper nameplate (29).

7. The IGBT module automatic production line fixture of claim 3, wherein, The bottom surface of the bottom plate (1) is provided with a wear-resistant strip (16).

8. The IGBT module automatic production line fixture of claim 3, wherein, At least one side of the bottom plate (1) is provided with a buffer block (17).

9. The IGBT module automatic production line fixture of claim 3, wherein, The bottom plate (1) is provided with a bottom plate positioning block (18) on the lower surface, and the bottom plate is provided with a jacking positioning hole (19), when the bottom plate moves to the processing position, the jacking positioning hole is inserted with the jacking positioning mechanism of the machine tool; The jacking positioning hole is sleeved with a bottom plate bushing; the bottom plate bushing comprises a second bushing body (191) and a second fixing screw (192) for fixing the second bushing body (191), the second bushing body (191) comprises a second bushing sleeve (193) and a second bushing flange (194) arranged at one end of the second bushing sleeve (193), and at least two second arc-shaped grooves are arranged on the outer periphery of the second bushing flange (194); one end of the second fixing screw (192) is provided with a second screw flange (196), and a part of the second screw flange (196) can extend into the second arc-shaped groove (195) and abut with the second arc-shaped groove.

10. An IGBT module automatic production line, characterized by, The IGBT module automatic production line jig comprises the IGBT module automatic production line jig.

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