CN209737412U

CN209737412U - Ultrasonic scanning clamp for IGBT module

Info

Publication number: CN209737412U
Application number: CN201920322770.6U
Authority: CN
Inventors: 郭新华; 傅金源; 金宇航; 黄珂
Original assignee: Zhejiang Xinfeng Technology Co Ltd
Current assignee: Zhejiang Xinfeng Technology Co Ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2019-12-06
Anticipated expiration: 2029-03-14

Abstract

The utility model provides an ultrasonic scanning anchor clamps for IGBT module belongs to anchor clamps technical field. It has solved the problem of current anchor clamps clamping inefficiency. This ultrasonic scanning anchor clamps for IGBT module, including the bottom plate, the upper surface of bottom plate from left to right the interval is provided with a plurality of IGBT standing groove, has all seted up the scanning hole on the bottom surface of every IGBT standing groove, and the side all has the briquetting of rotation connection on the bottom plate around the IGBT standing groove, and the briquetting can inwards rotate and compress tightly a tip of a plurality of IGBT simultaneously, the upper surface of bottom plate still is provided with the positioning mechanism that can fix a position the briquetting after the briquetting compresses tightly the IGBT. This anchor clamps structure is simpler, and IGBT's clamping is simple and convenient, quick, is showing the clamping efficiency that improves IGBT to IGBT location is stable, firm in the IGBT standing groove, and IGBT location is stable, not take place the drunkenness in the IGBT standing groove, improves ultrasonic scanning's imaging effect, guarantees can follow the clear cavity condition of observing the face of weld between IGBT's the copper-clad plate and the aluminium base board in the image.

Description

Ultrasonic scanning clamp for IGBT module

Technical Field

The utility model belongs to the technical field of anchor clamps, a ultrasonic scanning anchor clamps, especially an ultrasonic scanning anchor clamps for IGBT module are related to.

Background

The IGBT module includes aluminium base board, the copper-clad plate, chip and electronic components of setting on the copper-clad plate, weld through the solder between copper-clad plate and the aluminium base board, the work of IGBT module can produce the heat, the heat transmits to the aluminium base board through the copper-clad plate, the aluminium base board gives out the heat again, consequently, aluminium base board plays the effect of heat dissipation cooling to the IGBT module, when being filled by the solder is whole between the face of copper-clad plate and the face of aluminium base board, the area of contact of copper-clad plate and aluminium base board is the biggest this moment, the radiating effect is best, when there is the cavity between the face of copper-clad plate and the face of aluminium base board, when the solder is filled. Therefore, after the IGBT module is divided, the connecting surface between the copper-clad plate and the aluminum substrate needs to be scanned through ultrasonic waves and imaged in software, and whether a hollow hole exists in the welding surface between the copper-clad plate and the aluminum substrate can be obviously identified through the image in the software.

At present, the chinese patent network discloses an ultrasonic C scanning instrument clamp [ grant publication No.: CN205928352U, including aluminum section frame, pulling force runner, T type nut ring, nylon rope, T type nut ring is fixed in aluminum section frame's upper and lower frame, and the pulling force runner is fixed in aluminum section frame's frame, and the nylon rope passes T type nut ring and the end on upper and lower frame and winds on the pulling force runner, forms fixed frame, and fixed frame is in aluminum section frame's plane. During the work piece location, each two T type nut rings are a set of from top to bottom, and the nylon rope uses clockwise or anticlockwise to pass four T type nut rings in proper order, and at last with nylon rope end around being on a pulling force runner, the nylon rope has formed the regular fixed frame of shape, during the clamping part, the edge of part has regular breach, twines the nylon rope of fixed frame on a plurality of breachs of part, can be fixed with the spare part clamping.

The clamp is complex in structure and complex in assembly, when a plurality of parts are clamped, notches need to be formed in the parts, the nylon ropes are wound on the notches of the parts, each tension runner is adjusted to enable the parts to be firmly fixed, each part needs the clamping step, and the clamping of the parts takes a long time, so that the clamping efficiency of the parts is low; secondly, the IGBT module is not provided with a gap for winding a nylon rope, the IGBT module cannot be clamped and positioned by the clamping mode, and the clamp is not suitable for clamping the IGBT module; in addition, spare part is fixed a position through the fixed frame that the nylon rope formed, and the nylon rope has certain ductility, receives the machine vibration when the anchor clamps are placed on the base of ultrasonic scanning equipment after and influence for spare part can have the possibility of controlling the drunkenness, in case the work piece takes place to remove in the ultrasonic scanning process and must lead to the formation of image distortion.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided an ultrasonic scanning anchor clamps for IGBT module, the utility model aims to solve the technical problem that: how to improve the clamping efficiency of the workpiece.

The purpose of the utility model can be realized by the following technical proposal:

The utility model provides an ultrasonic scanning anchor clamps for IGBT module, includes the bottom plate, its characterized in that, the upper surface of bottom plate from left to right the interval is provided with a plurality of IGBT standing groove, has all seted up the scanning hole on the bottom surface of every IGBT standing groove, the side all has the briquetting of rotation connection on the bottom plate around the IGBT standing groove, the briquetting can inwards rotate and compress tightly a tip of a plurality of IGBT simultaneously, the upper surface of bottom plate still is provided with and can compresses tightly the positioning mechanism of briquetting location behind the IGBT when the briquetting.

During the use, place a plurality of IGBT in a plurality of IGBT standing groove in proper order, the IGBT standing groove is around realizing the IGBT, control the location, then manual all inwards rotate two briquetting, the briquetting of front side compresses tightly at the preceding tip of a plurality of IGBT, the briquetting of rear side compresses tightly the rear end at a plurality of IGBT, two briquetting compress tightly the front and back end of IGBT respectively, fix a position about going on the IGBT, positioning mechanism fixes a position the briquetting after that, accomplish the clamping of IGBT on anchor clamps, this clamping mode fixes a position all IGBT through two briquetting, the simple more of anchor clamps structure, the clamping of IGBT is simple and convenient, it is quick, show the clamping efficiency that improves the IGBT, and the IGBT is fixed stably, firm in the IGBT standing groove. After the clamping is accomplished, place anchor clamps on ultrasonic scanning equipment, the ultrasonic wave that ultrasonic scanning equipment takes place scans the IGBT through the scanning hole, at ultrasonic scanning's in-process, positioning mechanism makes the briquetting can't rotate after fixing a position the briquetting, guarantees that the briquetting compresses tightly the IGBT all the time, make the IGBT fix a position stably in the IGBT standing groove, do not take place the drunkenness, improve ultrasonic scanning's imaging, guarantee to follow the clear cavity condition of observing the face of weld between the copper-clad plate of IGBT and the aluminium base board in the image.

In foretell ultrasonic scanning anchor clamps for IGBT module, the briquetting is rectangular form, the lower surface of briquetting has a plurality of and compresses tightly the convex part, and a plurality of compresses tightly convex part and a plurality of IGBT standing groove one-to-one, and every compresses tightly the convex part homoenergetic and extends in the one end of corresponding IGBT standing groove. In this structure, simple structure, small in size of briquetting when the briquetting is rectangular form and makes the briquetting can compress tightly all IGBT, and the briquetting inwards rotates the back, compresses tightly the convex part and extends in corresponding IGBT standing groove to compressing tightly in the one end of IGBT, and every IGBT all compresses tightly the convex part through one and compresses tightly for the IGBT is fixed a position stably in the IGBT standing groove.

In the ultrasonic scanning clamp for the IGBT module, a plurality of hinges are arranged on the outer side surface of the pressing block at intervals along the length direction of the pressing block, one leaf of each hinge is fixedly connected with the pressing block, and the other leaf of each hinge is fixedly connected with the upper surface of the bottom plate. In this structure, the briquetting is connected with the bottom plate through a plurality of hinge, and a plurality of hinge guarantees that the briquetting is stable in rotation, and then guarantees to compress tightly the convex part and can compress tightly on IGBT.

In the above ultrasonic scanning jig for the IGBT module, a rubber pad is fixed to the inner bottom surface of the IGBT placing groove, a through hole corresponding to the scanning hole is formed in the rubber pad, and the shape of the through hole is the same as that of the scanning hole. Ultrasonic scanning is gone on in aqueous, can splash when ultrasonic transducer high-speed round trip movement, if not set up the rubber pad when, the unable complete laminating of interior bottom surface of IGBT and IGBT standing groove, must have the space between the interior bottom surface of IGBT and IGBT standing groove, splash can splash the upper surface of IGBT through this clearance, lead to the IGBT to damage, after setting up the rubber pad through the interior bottom surface at the IGBT standing groove, the upper surface at the rubber pad is placed to the IGBT, and under the effect is compressed tightly at the briquetting at the IGBT, the lower surface of rubber pad closely laminates with the interior bottom surface of IGBT standing groove, the upper surface of rubber pad closely laminates with the IGBT, make between the lower surface of rubber pad and the interior bottom surface of IGBT standing groove, no clearance basically between the upper surface of rubber pad and the IGBT, make splash can's the upper surface of IGBT, the protection IGBT does not receive the damage.

In the ultrasonic scanning clamp for the IGBT module, the inner side surface of the left end and the inner side surface of the right end of each pressing block are respectively provided with a positioning convex part, and after the pressing blocks tightly press the IGBT, the two positioning convex parts of the two pressing blocks at the same end are stacked; the upper surface of the left end and the right end of the bottom plate is provided with the positioning mechanism, the positioning mechanism comprises a pressing rod and a cylinder which can drive the pressing rod to enable the lower end of the pressing rod to be pressed on the upper surface of the uppermost positioning convex part, and the cylinder is fixed on the upper surface of the bottom plate. In this structure, cylinder drive depression bar makes the lower extreme of depression bar compress tightly the upper surface at the location convex part of the top, because two location convex parts are piled up, after the location convex part of top is positioned, the location convex part of below is positioned equally, and the location convex part makes the briquetting can't rotate after being positioned, through a depression bar while to the tip location of two briquettings, and two positioning mechanism realize the location to the left and right ends of two briquettings respectively, improve the location effect to the briquetting.

In the above ultrasonic scanning clamp for the IGBT module, the cylinder is a rotary cylinder, a connecting block is fixed at the outer end of a piston rod of the cylinder, and the upper end of the pressing rod is fixedly connected with the connecting block. When the pressing block presses the IGBT, the piston rod of the rotary cylinder moves downwards while rotating, the pressing rod is driven to rotate to the position above the positioning convex part, and then the pressing rod is driven to move downwards so that the lower end surface of the pressing rod is pressed on the upper surface of the positioning convex part; after the ultrasonic scanning is completed, the pressing block needs to rotate outwards to loosen the IGBT, the rotary cylinder drives the pressing rod to move upwards firstly and then drives the pressing rod to rotate, so that the pressing rod is not located above the positioning convex part any more, and the pressing block is prevented from rotating outwards to generate interference.

In foretell ultrasonic scanning anchor clamps for IGBT module, the bottom plate includes plate body and upper plate body down, the middle part of plate body upper surface is seted up flutedly down, from left to right the interval be provided with a plurality of on the interior bottom surface of recess the scanning hole, it inlays to establish and fixes in the recess to go up the plate body, go up the plate body and from left to right seted up a plurality of locating hole, a plurality of locating hole and a plurality of scanning hole one-to-one, just the locating hole is greater than the scanning hole. After the upper plate body is embedded in the groove, the positioning hole and the inner bottom surface of the groove are combined to form the IGBT placing groove, the scanning hole is additionally formed in the lower plate body, the structure facilitates the processing and manufacturing of the IGBT placing groove, and the manufacturing difficulty of the IGBT placing groove is reduced.

Compared with the prior art, the utility model discloses an ultrasonic scanning anchor clamps for IGBT module has following advantage: after the IGBT is placed in the IGBT placing groove, all the IGBTs are positioned through the two pressing blocks, then the pressing blocks are positioned through the positioning mechanism, the clamp structure is simpler, the IGBT is simple, convenient and quick to clamp, the clamping efficiency of the IGBT is obviously improved, and the IGBT is stably and firmly positioned in the IGBT placing groove; at ultrasonic scanning's in-process, positioning mechanism makes the briquetting can't rotate after fixing a position the briquetting, guarantees that the briquetting compresses tightly the IGBT all the time for the IGBT is fixed a position stably, does not take place the drunkenness in the IGBT standing groove, improves ultrasonic scanning's imaging effect, guarantees can follow the clear cavity condition of observing the face of weld between IGBT's the copper-clad plate and the aluminium base board in the image.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional structure of the present invention.

Fig. 3 is the utility model discloses a section structure schematic diagram of placing IGBT in the IGBT standing groove.

Fig. 4 is a schematic perspective view of the press block of the present invention.

Fig. 5 is an exploded view of the bottom plate of the present invention.

In the figure, 1, a bottom plate; 1a, placing an IGBT groove; 1b, scanning the hole; 11. a lower plate body; 11a, a groove; 12. an upper plate body; 12a, positioning holes; 2. briquetting; 21. a compression boss; 22. a positioning projection; 3. a positioning mechanism; 31. a pressure lever; 32. a cylinder; 33. connecting blocks; 4. a hinge; 5. a rubber pad; 51. a through hole; 6. an IGBT; 61. an aluminum substrate; 62. and (3) copper clad laminate.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the ultrasonic scanning pneumatic tool clamp for the IGBT module comprises a bottom plate 1, wherein a plurality of IGBT placing grooves 1a are formed in the upper surface of the bottom plate 1 at intervals from left to right, scanning holes 1b are formed in the bottom surface of each IGBT placing groove 1a, pressing blocks 2 rotatably connected to the bottom plate 1 are arranged on the front side and the rear side of each IGBT placing groove 1a, and a positioning mechanism 3 capable of positioning the pressing blocks 2 is further arranged on the upper surface of the bottom plate 1. When the ultrasonic scanning device is used, the plurality of IGBTs 6 are sequentially placed in the plurality of IGBT placing grooves 1a, the shape of the aluminum substrate 61 is basically consistent with that of the IGBT placing grooves 1a, the aluminum substrate 61 is positioned in the IGBT placing grooves 1a, the projection of the copper-clad plate 62 is basically overlapped with that of the scanning hole 1b, and ultrasonic waves conveniently penetrate through the scanning hole 1b to carry out ultrasonic scanning on a welding surface between the copper-clad plate 62 and the aluminum substrate 61; then, manually, two pressing blocks 2 are rotated inwards, the pressing block 2 on the front side is pressed on the front end portion of a plurality of aluminum substrates 61, the pressing block 2 on the rear side is pressed on the rear end portion of the plurality of aluminum substrates 61, the two pressing blocks 2 respectively press the front end and the rear end of the aluminum substrates 61, the IGBT6 is positioned, then the pressing block 2 is positioned by a positioning mechanism 3, clamping of the IGBT6 on a clamp is completed, all the IGBTs 6 are positioned by the two pressing blocks 2 in the clamping mode, the clamp structure is simpler, clamping of the IGBT6 is simple, convenient and quick, clamping efficiency of the IGBT6 is obviously improved, and the IGBT6 is stably and firmly positioned in the IGBT placing groove 1 a. After the clamping is accomplished, place anchor clamps on ultrasonic scanning equipment, the ultrasonic wave that ultrasonic scanning equipment takes place scans the face of weld between copper-clad plate 62 and the aluminium base board 61 through scanning hole 1b, at ultrasonic scanning's in-process, make briquetting 2 unable rotation after positioning mechanism 3 fixes a position briquetting 2, guarantee briquetting 2 and compress tightly IGBT6 all the time, make IGBT6 fix a position stably in IGBT standing groove 1a, do not take place the drunkenness, improve ultrasonic scanning's imaging effect, guarantee can follow the clear cavity condition of observing the face of weld between copper-clad plate 62 and the aluminium base board 61 in the image.

further, as shown in fig. 4, the pressing block 2 is in a long strip shape, the lower surface of the pressing block 2 is provided with a plurality of pressing convex portions 21, the plurality of pressing convex portions 21 are in one-to-one correspondence with the plurality of IGBT placing grooves 1a, each pressing convex portion 21 can extend into one end of the corresponding IGBT placing groove 1a, and each pressing convex portion 21 is pressed on the upper surface of the corresponding aluminum substrate 61, so that the IGBT6 is stably positioned in the IGBT placing grooves 1 a.

As shown in fig. 1, a plurality of hinges 4 are arranged on the outer side surface of the pressing block 2 at intervals along the length direction of the pressing block 2, one leaf of each hinge 4 is fixedly connected with the pressing block 2, and the other leaf is fixedly connected with the upper surface of the bottom plate 1. Briquetting 2 is connected with bottom plate 1 through a plurality of hinge 4, and a plurality of hinge 4 guarantees briquetting 2 and rotates stably, and then guarantees to compress tightly convex part 21 and can compress tightly on aluminium base board 61.

As shown in fig. 2 and 3, a rubber pad 5 is fixed to the inner bottom surface of the IGBT mounting groove 1a, a through hole 51 corresponding to the scanning hole 1b is opened in the rubber pad 5, and the shape of the through hole 51 is the same as that of the scanning hole 1 b. Ultrasonic scanning is carried out in water, splash can be splashed when an ultrasonic probe moves back and forth at high speed, if no rubber gasket 5 is arranged, the aluminum substrate 61 cannot be completely attached to the inner bottom surface of the IGBT placing groove 1a, a gap is inevitably formed between the aluminum substrate 61 and the inner bottom surface of the IGBT placing groove 1a, splash can be splashed to the upper surface of the copper-clad plate 62 through the gap, so that the IGBT6 is damaged, after the rubber gasket 5 is arranged on the inner bottom surface of the IGBT placing groove 1a, the aluminum substrate 61 is placed on the upper surface of the rubber gasket 5, under the pressing action of the aluminum substrate 61 on the pressing block 2, the lower surface of the rubber gasket 5 is tightly attached to the inner bottom surface of the IGBT placing groove 1a, the upper surface of the rubber gasket 5 is tightly attached to the lower surface of the aluminum substrate 61, so that no gap exists between the lower surface of the rubber gasket 5 and the inner bottom surface of the IGBT, so that water splash can not splash to the upper surface of the copper-clad plate 62, and the IGBT is protected from being damaged.

As shown in fig. 1, the inner side surfaces of the left and right ends of each pressing block 2 are provided with positioning convex portions 22, and after the pressing blocks 2 press the IGBT, the two positioning convex portions 22 of the two pressing blocks 2 at the same end are stacked; the upper surface of the left end and the right end of the bottom plate 1 are provided with positioning mechanisms 3, each positioning mechanism 3 comprises a pressing rod 31 and a cylinder 32 which can drive the pressing rod 31 to enable the lower end of the pressing rod 31 to press the upper surface of the uppermost positioning convex part 22, the cylinders 32 are fixed on the upper surface of the bottom plate 1, the cylinders 32 are rotary cylinders, the outer ends of piston rods of the cylinders 32 are fixed with connecting blocks 33, and the upper ends of the pressing rods 31 are fixedly connected with the connecting blocks 33. When the pressing block 2 presses the IGBT6, the piston rod of the rotary cylinder moves downward while rotating, the pressing rod 31 is driven to rotate to the position above the positioning convex part 22, and then the pressing rod 31 is driven to move downward to press the lower end surface of the pressing rod 31 against the upper surface of the positioning convex part 22, because the two positioning convex parts 22 are stacked, after the positioning convex part 22 above is positioned, the positioning convex part 22 below is also positioned, the pressing block 2 cannot rotate after the positioning convex part 22 is positioned, the end parts of the two pressing blocks 2 are positioned simultaneously by one pressing rod 31, and the two positioning mechanisms 3 respectively position the left end and the right end of the two pressing blocks 2, so that the positioning effect on the pressing block 2 is improved; after the ultrasonic scanning is completed, the pressing block 2 needs to rotate outwards to loosen the IGBT6, the rotary cylinder drives the pressing rod 31 to move upwards firstly, and then drives the pressing rod 31 to rotate, so that the pressing rod 31 is not located above the positioning convex part 22 any more, and the pressing block 2 is prevented from rotating outwards to generate interference.

As shown in fig. 5, the bottom plate 1 includes a lower plate body 11 and an upper plate body 12, a groove 11a is provided in the middle of the upper surface of the lower plate body 11, a plurality of scanning holes 1b are provided on the inner bottom surface of the groove 11a at intervals from left to right, the upper plate body 12 is embedded in the groove 11a and fixed, a plurality of positioning holes 12a are provided on the upper plate body 12 from left to right, the plurality of positioning holes 12a are in one-to-one correspondence with the plurality of scanning holes 1b, and the positioning holes 12a are larger than the scanning holes 1 b. After the upper board body 12 is embedded in the groove 11a, the positioning hole 12a and the inner bottom surface of the groove 11a are combined to form the IGBT placing groove 1a, and the scanning hole 1b is additionally formed in the lower board body 11.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an ultrasonic scanning anchor clamps for IGBT module, includes bottom plate (1), its characterized in that, the upper surface of bottom plate (1) from left to right is provided with a plurality of IGBT standing groove (1a) at the interval, has all seted up scanning hole (1b) on the bottom surface of every IGBT standing groove (1a), the side all has briquetting (2) of rotation connection on bottom plate (1) around IGBT standing groove (1a), briquetting (2) can inwards rotate and compress tightly a plurality of IGBT's a tip simultaneously, the upper surface of bottom plate (1) still is provided with can be with positioning mechanism (3) of briquetting (2) location after briquetting (2) compress tightly the IGBT.

2. The ultrasonic scanning jig for the IGBT module according to claim 1, wherein the pressing block (2) is in an elongated shape, the lower surface of the pressing block (2) is provided with a plurality of pressing convex portions (21), the plurality of pressing convex portions (21) correspond to the plurality of IGBT placing grooves (1a) one by one, and each pressing convex portion (21) can extend into one end of the corresponding IGBT placing groove (1 a).

3. The ultrasonic scanning clamp for the IGBT module as recited in claim 2, wherein a plurality of hinges (4) are arranged on the outer side surface of the pressing block (2) at intervals along the length direction of the pressing block (2), one leaf of each hinge (4) is fixedly connected with the pressing block (2), and the other leaf is fixedly connected with the upper surface of the bottom plate (1).

4. The ultrasonic scanning jig for the IGBT module according to claim 1, wherein a rubber pad (5) is fixed on the inner bottom surface of the IGBT placement groove (1a), a through hole (51) corresponding to the scanning hole (1b) is formed in the rubber pad (5), and the shape of the through hole (51) is the same as that of the scanning hole (1 b).

5. The ultrasonic scanning jig for the IGBT module according to any one of claims 1 to 4, characterized in that the inner side surfaces of the left and right ends of each pressing block (2) are provided with positioning protrusions (22), and after the pressing blocks (2) press the IGBT, the two positioning protrusions (22) of the two pressing blocks (2) at the same end are stacked; the upper surface of bottom plate (1) left and right ends all is provided with positioning mechanism (3), positioning mechanism (3) include depression bar (31) and can drive depression bar (31) make the lower extreme of depression bar (31) press cylinder (32) at the upper surface of the location convex part (22) of the top, cylinder (32) are fixed at the upper surface of bottom plate (1).

6. The ultrasonic scanning clamp for the IGBT module as recited in claim 5, wherein the air cylinder (32) is a rotary air cylinder, a connecting block (33) is fixed at the outer end of the piston rod of the air cylinder (32), and the upper end of the pressure rod (31) is fixedly connected with the connecting block (33).

7. The ultrasonic scanning jig for the IGBT module according to any one of claims 1 to 4, wherein the bottom plate (1) comprises a lower plate body (11) and an upper plate body (12), a groove (11a) is formed in the middle of the upper surface of the lower plate body (11), a plurality of scanning holes (1b) are formed in the inner bottom surface of the groove (11a) at intervals from left to right, the upper plate body (12) is embedded in the groove (11a) and fixed, a plurality of positioning holes (12a) are formed in the upper plate body (12) from left to right, the plurality of positioning holes (12a) correspond to the plurality of scanning holes (1b) one by one, and the positioning holes (12a) are larger than the scanning holes (1 b).