CN117538161B - IGBT module bonding wire tensile test tool - Google Patents
IGBT module bonding wire tensile test tool Download PDFInfo
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- CN117538161B CN117538161B CN202410033214.2A CN202410033214A CN117538161B CN 117538161 B CN117538161 B CN 117538161B CN 202410033214 A CN202410033214 A CN 202410033214A CN 117538161 B CN117538161 B CN 117538161B
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- 238000009864 tensile test Methods 0.000 title claims description 11
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 230000008093 supporting effect Effects 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000012423 maintenance Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005493 welding type Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of IGBT module bonding wire testing tools, and particularly relates to an IGBT module bonding wire tensile force testing tool which comprises a tool base, an installation base and a tensile force meter, wherein the installation base is fixed at the bottom of the tool base, a testing port is formed in the top of the tool base, an operating mechanism is arranged on the tool base and comprises connecting sleeves, cams, clamping teeth, U-shaped frames and handles, two groups of connecting sleeves are arranged on two sides of the outer wall of the tool base, the front end of a central shaft of one connecting sleeve is fixed with a cam, a plurality of clamping teeth are arranged at the edge of a concave surface of the cam at equal intervals, the middle reserved holes of the two groups of connecting sleeves are penetrated and spliced with longitudinal support arms of the U-shaped frames, and the handles are welded on horizontal support arms of the U-shaped frames. The invention can rapidly take out the module body for completing the tensile force test, and the handle, the supporting plate, the transverse clamping seat and the longitudinal clamping seat can rapidly carry out elastic clamping on the module body when being matched with each other, and can clamp IGBT modules with different sizes and specifications.
Description
Technical Field
The invention belongs to the technical field of IGBT module bonding wire testing tools, and particularly relates to an IGBT module bonding wire tensile testing tool.
Background
The electrode terminals of the IGBT chip and the diode chip are electrically connected through a wire bonding technology. Wire bonding is one of the main ways to realize electrical interconnection inside an IGBT power module, and its principle is to form interconnection between chips by bonding wires to form a loop. With the rapid development of manufacturing processes, many metal bonding wires are widely used in IGBT power module interconnection technology. In practical application, bonding efficiency can be improved through screening and quality control of bonding wires, and quality of packaged products can be improved. After welding of bonding wires is completed, the IGBT power module generally needs to be sampled for tensile strength test, so that the welding quality of the bonding wires is ensured.
Through searching, the patent with the publication number of CN116429573B discloses a welding type IGBT module bonding wire tensile force testing device and a welding type IGBT module bonding wire tensile force testing method, and the welding type IGBT module bonding wire tensile force testing device can realize transverse and longitudinal movement on a micro-stretcher and is pre-tightened by nuts so as to have a positioning function; the metal stay wire hook can be detached and replaced at any time in a threaded connection mode, and can be used for measuring the lead wire tensile loads with different diameters, and the micro-tensile load sensor can output a load-displacement change curve of the load-displacement change curve along with the rising of the metal stay wire hook in the test process, so that the purpose of measuring the bonding strength of the bonding wire after power circulation is realized;
in the above patent, the clamping mode of the module substrate adopts the cooperation of the fixed clamp and the movable clamp, the transmission device is required to be manually operated to open the dovetail groove clamp during operation, the module substrate is required to be repeatedly manually clamped or taken out during clamping or taking out, and after the tensile test of the bonding wire is completed, the module substrate cannot be quickly taken out to perform the subsequent test work of the IGBT module bonding wire;
the clamping of the dovetail groove clamp is realized through the threaded fit of the nut and the bolt between the fixed clamp and the movable clamp, meanwhile, the transmission device is locked through the pre-tightening nut, the clamping of the module substrate is completed through the operation, the clamping elasticity is lacking in the clamping operation process, the clamping of the module substrate is excessive due to the fact that the fixed clamp and the movable clamp are too tight, and the module substrate is easy to damage.
Disclosure of Invention
The invention aims to provide an IGBT module bonding wire tensile test tool for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: an IGBT module bonding wire tensile force testing tool comprises a tool base, an installation base and a tensile force meter,
the tool comprises a tool base, wherein a mounting base is fixed at the bottom of the tool base, a test port is formed in the top of the tool base, an operating mechanism is arranged on the tool base and comprises a connecting sleeve, a cam, clamping teeth, a U-shaped frame and a handle, two groups of connecting sleeves are arranged on two sides of the outer wall of the tool base, one of the two groups of connecting sleeves is fixed at the front end of a central shaft of the connecting sleeve, a plurality of clamping teeth are arranged on the concave surface edge of the cam at equal intervals, two groups of clamping teeth penetrate through and are inserted into a reserved middle hole of the connecting sleeve and a longitudinal support arm of the U-shaped frame, a handle is welded on a horizontal support arm of the U-shaped frame, an overhaul port is reserved on the adjacent side, close to the connecting sleeve, of the tool base, and a maintenance cover is connected in the overhaul port in a sliding mode;
the upper side of frock base is provided with the tensiometer, be provided with horizontal holder respectively in the test port of frock base upper edge.
Preferably, a fluted disc is arranged on the upper side of the cam, arc-shaped butt joint blocks are fixed on two sides of the top of the fluted disc, the upper side of each arc-shaped butt joint block is in sliding connection with a sliding rail, and the top of each sliding rail is welded with the lower edge of a test port of the tool base;
the surface of fluted disc has seted up the regulation mouth, the outer wall both sides swivelling joint of frock base has the dog, fixedly connected with spring No. one between dog and the U-shaped frame.
Preferably, a cross rod is welded on the inner wall surface of the testing port of the tool base in parallel, a longitudinal clamping seat is sleeved on the outer side of the cross rod, and the longitudinal clamping seat slides with the cross rod through a rectangular groove on the surface;
a sliding sleeve is fixed on one side of the longitudinal clamping seat, an inserting rod penetrates through the middle of the sliding sleeve, the top of the inserting rod is fixed with the lower edge of the transverse clamping seat, a second spring sleeved with the inserting rod is abutted to the upper side of the sliding sleeve, and the inserting rod is inserted into an adjusting opening on the surface of the fluted disc.
Preferably, a right-angle clamping opening is formed in one side, close to each other, of each of the two groups of the transverse clamping seats, a guide strip connected with a dovetail groove at the upper edge of the tool base is fixed on the surface of each of the transverse clamping seats, and a third spring is connected between each of the transverse clamping seats and the tool base.
Preferably, the maintenance cover comprises barb board and the arc of downside of upside, the barb board of maintenance cover is installed metal inductive switch with the adjacent side middle part embedding of arc.
Preferably, an abutting block is fixed on one side, far away from the right-angle clamping opening, of the transverse clamping seat, a magnet sheet is fixed on two longitudinal support arms of the U-shaped frame, and a pushing block is fixed at the end parts of the two longitudinal support arms of the U-shaped frame.
Preferably, the inner chamber wall downside of frock base is fixed with the connecting seat, driving motor is installed to one side of connecting seat, the middle part of connecting seat is provided with the rotation wheel fixed with driving motor output shaft, the surface mounting that the frock base is close to the connecting seat has the anti-deflection rail, the inside sliding connection of anti-deflection rail has the stand, the top of stand is fixed with the layer board.
Preferably, the inclined hole has been seted up to the periphery side surface of rotor, and the interference grafting has the cover of accomodating in the inclined hole, the inside of accomodating the cover is provided with No. four springs, no. four spring's one end and T shape pole butt, no. four spring's one end is kept away from to T shape pole is fixed with spacing post, the stand is close to the surface of spacing post and has seted up the sawtooth arch.
Preferably, the outside of pulling force meter is provided with the arm, the bottom of pulling force meter is fixed with tension sensor, tension sensor's downside is fixed with positive and negative rotation motor, positive and negative rotation motor's downside welding has the installing support.
Preferably, the output end of the forward and reverse rotation motor is fixed with a tooth column, one side of the tooth column is connected with a tooth column II in a meshed mode, the upper sides of the tooth column I and the tooth column II are rotatably connected with a mounting bracket through bearings, and traction hooks are welded at the bottoms of the tooth column I and the tooth column II.
Compared with the prior art, the invention has the beneficial effects that:
1. when the tension testing device is used, the handle and the U-shaped frame are turned over, so that the cam drives the latch to be meshed with the tooth surface at the bottom of the fluted disc for transmission, the two groups of transverse clamping seats are mutually far away, the module body is conveniently separated from the transverse clamping opening, the longitudinal clamping seats are reset upwards to push the module body to extend out of the transverse clamping opening of the transverse clamping seat, after the handle drives the U-shaped frame to turn over by 90 degrees, the U-shaped frame and the metal induction switch are close to induction, at the moment, the driving motor drives the limit column to be meshed with the sawtooth bulges at the side surface of the upright column, and the module body supported on the supporting plate is led out in an auxiliary manner, so that the module body for completing the tension testing can be taken out rapidly;
2. according to the invention, when the handle is pushed upwards, two groups of transverse clamping seats can be separated from each other, then the module body is placed in the supporting plate, the supporting plate is pressed downwards, the sawtooth protrusions on the side wall of the upright post are driven to extrude the limit posts on the outer wall of the rotating wheel, so that the limit posts of the cylindrical structure are separated from the clamping connection with the sawtooth protrusions on the side surface of the upright post, the upright post slides downwards along the anti-deviation rail and stops at a proper height, the upper side surfaces of the two groups of longitudinal clamping seats can be used for buffering and supporting the module body through the extrusion and supporting of the second spring, and when the handle is released, the two groups of transverse clamping seats can be driven to be close, so that the handle, the supporting plate, the transverse clamping seats and the longitudinal clamping seats can be used for elastically clamping the module body when being matched with each other, and IGBT modules with different sizes can be clamped;
3. according to the invention, the forward and reverse rotation motor at the bottom of the tension sensor is started to forward rotate, the first tooth column and the second tooth column are driven to forward engage and rotate by 90 degrees, so that the two groups of traction hooks are driven to horizontally spread, when the traction hooks of the tension meter are inserted into gaps of a plurality of bonding wires of the IGBT module for tensile strength test, the horizontally spread traction hooks can adapt to the gaps of different bonding wires, and the traction hooks can conveniently convert flat unobstructed insertion or direct insertion according to the gap sizes of the bonding wires, so that the tension meter does not need to frequently replace traction hook components.
Drawings
FIG. 1 is a schematic view of a first perspective view of the present invention;
FIG. 2 is a schematic view of a second perspective view of the present invention;
FIG. 3 is a schematic perspective view showing an opened state of a maintenance cover according to the present invention;
FIG. 4 is a schematic elevational view of the present invention;
FIG. 5 is a schematic perspective exploded view of the operating mechanism of the present invention;
FIG. 6 is a schematic perspective view of an operating mechanism according to the present invention;
FIG. 7 is a schematic perspective view of the longitudinal and transverse holders of the present invention in a coordinated fashion;
FIG. 8 is a schematic perspective view of a tooling base according to the present invention;
FIG. 9 is a schematic right-hand view of the cam of the present invention;
FIG. 10 is a schematic view of a right side cross-sectional structure of a rotary wheel according to the present invention;
FIG. 11 is a schematic perspective view of a tension meter according to the present invention;
FIG. 12 is a schematic perspective view of a tension meter in the unfolded state of the towing hook of the present invention;
fig. 13 is an enlarged schematic view of the structure of fig. 12 a according to the present invention.
In the figure: 1. a tool base; 2. a mounting base; 3. an operating mechanism; 31. connecting sleeves; 32. a cam; 321. latch teeth; 33. a U-shaped frame; 331. a magnet piece; 332. a pushing block; 34. a handle; 35. fluted disc; 36. arc butt joint blocks; 37. a slide rail; 38. an adjustment port; 39. a stop block; 310. a first spring; 4. a cross bar; 5. a longitudinal clamping seat; 51. a sliding sleeve; 52. a rod; 53. a second spring; 6. a transverse clamping seat; 61. a right angle clamping opening; 62. a guide bar; 63. a third spring; 64. an abutment block; 7. a tension meter; 71. a mechanical arm; 72. a tension sensor; 73. a forward and reverse rotation motor; 74. a mounting bracket; 75. a first tooth column; 76. a second tooth column; 77. a traction hook; 8. a connecting seat; 81. a drive motor; 82. a rotating wheel; 821. a storage sleeve; 822. a spring IV; 823. a T-bar; 824. a limit column; 83. a column; 84. a supporting plate; 85. an anti-deviation rail; 9. a maintenance cover; 91. a metal inductive switch; 10. a module body.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution: the IGBT module bonding wire tensile force testing tool comprises a tool base 1, a mounting base 2 and a tensile force meter 7, wherein the mounting base 2 is fixed at the bottom of the tool base 1, a testing port is formed in the top of the tool base 1 and used for limiting and clamping a module body 10, an operating mechanism 3 used for loosening and clamping the module body 10 is arranged on the tool base 1, the operating mechanism 3 comprises connecting sleeves 31, cams 32, latches 321, a U-shaped frame 33 and a handle 34, two groups of connecting sleeves 31 are arranged on two sides of the outer wall of the tool base 1, the front end of a central shaft of one connecting sleeve 31 is fixedly provided with the cams 32, a plurality of latches 321 are arranged at the concave surface edge of the cams 32 at equal intervals, the inside of middle reserved holes of the two groups of connecting sleeves 31 are in penetrating and splicing with longitudinal supporting arms of the U-shaped frame 33, the central shafts of the two groups of connecting sleeves 31 are connected with the side walls of the tool base 1 in a penetrating manner, handles 34 are welded on the horizontal support arms of the U-shaped frames 33, the U-shaped frames 33 and the handles 34 are made of stainless steel materials, an access hole is reserved on the adjacent side of the tool base 1, which is close to the connecting sleeves 31, and a maintenance cover 9 is connected in a sliding manner, the maintenance cover 9 consists of a barb plate on the upper side and an arc plate on the lower side, a metal induction switch 91 is embedded in the middle of the adjacent side of the barb plate and the arc plate of the maintenance cover 9, and the matched screws on the two sides of the maintenance cover 9 are taken out and the maintenance cover 9 is slid, so that the barb plate on the upper side of the maintenance cover 9 is separated from the access hole on one side of the tool base 1, and components inside the tool base 1 are convenient to maintain; the upper side of the tool base 1 is provided with a tension meter 7 for testing the tensile strength of the bonding wire, and a test port at the upper edge of the tool base 1 is respectively provided with a vertical clamping seat 5 for vertical abutting and a horizontal clamping seat 6 for horizontal abutting;
referring to fig. 3-7, a fluted disc 35 is arranged on the upper side of the cam 32, arc-shaped butt-joint blocks 36 are fixed on two sides of the top of the fluted disc 35, the upper side of each arc-shaped butt-joint block 36 is in sliding connection with a sliding rail 37, and the top of each sliding rail 37 is welded with the lower edge of a test port of the tool base 1;
the surface of the fluted disc 35 is provided with an adjusting port 38, the adjusting port 38 is in a strip shape, two groups of adjusting ports 38 are arranged on the surface of the fluted disc 35, the distances from the two ports of the adjusting port 38 to the circle center of the fluted disc 35 are different, the distances from the two ports of the adjusting port 38 to the circle center of the fluted disc 35 are set to be a near circle center end and a far circle center end, two sides of the outer wall of the tooling base 1 are rotationally connected with a stop block 39, a first spring 310 is fixedly connected between the stop block 39 and the U-shaped frame 33, and the U-shaped frame 33 and the tooling base 1 form an elastic rotating structure through the connecting sleeve 31 and the first spring 310;
the inner wall surface of the testing port of the tool base 1 is welded with a cross rod 4 in parallel, the outer side of the cross rod 4 is sleeved with a longitudinal clamping seat 5, and the longitudinal clamping seat 5 slides with the cross rod 4 through a rectangular groove on the surface; a sliding sleeve 51 is fixed on one side of the longitudinal clamping seat 5, a plug rod 52 is inserted in the middle of the sliding sleeve 51 in a penetrating mode, the top of the plug rod 52 is fixed with the lower edge of the transverse clamping seat 6, a second spring 53 sleeved with the plug rod 52 is abutted to the upper side of the sliding sleeve 51, and the plug rod 52 is inserted in the adjusting opening 38 on the surface of the fluted disc 35.
In specific implementation, the handle 34 and the U-shaped frame 33 are turned around the central shafts of the two groups of connecting sleeves 31, so that one connecting sleeve 31 drives the cam 32 to turn 90 degrees, at the moment, the cam 32 drives the latch 321 to be in meshed transmission with the tooth surface at the bottom of the fluted disc 35, when the U-shaped frame 33 turns 90 degrees towards the maintenance cover 9, the fluted disc 35 drives the two groups of inserting rods 52 to move towards the far center end of the adjusting port 38 due to rotation, at the moment, the two groups of transverse clamping seats 6 can be mutually far away, and after 90 degrees of turning of the handle 34 and the U-shaped frame 33 are completed, the transverse clamping seats 6 can be quickly opened, so that the module body 10 can be conveniently and quickly released from being fastened with the right-angle clamping port 61;
when the top of the module body 10 is not limited by obstruction, the return of the second spring 53 shortens, so that the second spring 53 pulls the sliding sleeve 51 to move upwards along the inserted link 52 and drives the longitudinal clamping seat 5 to push the module body 10 upwards to extend out of the right-angle clamping opening 61 of the transverse clamping seat 6;
after the handle 34 drives the U-shaped frame 33 to turn over 90 degrees, the horizontal support arm of the U-shaped frame 33 can be close to the metal induction switch 91 on the surface of the maintenance cover 9 for induction, at the moment, the PLC controller on the test operation table controls the driving motor 81 to rotate positively, and the driving motor 81 drives the limiting column 824 to be meshed with the sawtooth protrusions on the side face of the upright post 83 when rotating, so that the upright post 83 and the supporting plate 84 are gradually lifted upwards, the module body 10 supported on the supporting plate 84 is conveniently led out in an auxiliary manner, and the module body 10 for completing a tension test can be quickly taken out.
Referring to fig. 1-4, 7 and 8, a right angle clamping opening 61 is formed on one side of two groups of transverse clamping seats 6 close to each other, a guide bar 62 connected with a dovetail groove at the upper edge of the tool base 1 is fixed on the surface of the transverse clamping seat 6, a third spring 63 is connected between the transverse clamping seat 6 and the tool base 1, the cross section size of the dovetail groove is matched with the cross section size of the guide bar 62, the transverse clamping seat 6 forms a horizontal elastic telescopic structure with the tool base 1 through the third spring 63, the sliding of the guide bar 62 and the dovetail groove can ensure that the transverse clamping seat 6 cannot shake when moving horizontally, and in addition, when in tension test, the module body 10 is propped against the right angle clamping opening 61 of the transverse clamping seat 6, the transverse clamping seat 6 can be ensured not to loosen upwards.
Referring to fig. 1-6, an abutment block 64 is fixed on a side of the transverse clamping seat 6 away from the right angle clamping opening 61, a magnet piece 331 is fixed on two longitudinal support arms of the U-shaped frame 33, the connecting sleeve 31 is made of iron material, the connecting sleeve 31 is magnetically attracted and abutted to the magnet piece 331, a push block 332 is fixed at end portions of the two longitudinal support arms of the U-shaped frame 33, the push block 332 is in a right trapezoid structure, the abutment block 64 is in a right triangle structure, and an inclined side surface of the push block 332 is attached to an inclined side surface of the abutment block 64.
In specific implementation, when the IGBT module needs to be tested, by pushing the handle 34 upward, the handle 34 drives the two longitudinal arms of the U-shaped frame 33 to move upward along the connecting sleeve 31, so that the two longitudinal arms of the U-shaped frame 33 are pushed against the inclined side surfaces of the abutment block 64 by the push block 332 at the top, so that the two groups of transverse holders 6 on the outer wall of the tool base 1 are separated from each other, and the right-angle holder 61 is opened, thereby facilitating the placement of the module body 10 in the test port at the top of the tool base 1;
and when two sets of horizontal holders 6 keep away from each other for the inserted link 52 of horizontal holder 6 bottom drives vertical holder 5 sideslip through sliding sleeve 51, and when two sets of inserted link 52 kept away from each other, inserted link 52 can produce extrusion thrust along the regulation mouth 38 on fluted disc 35 surface, makes inserted link 52 to the far circle center end of regulation mouth 38 remove, therefore fluted disc 35 can carry out the slip direction along annular slide rail 37 through the arc butt joint piece 36 in top both sides, simultaneously, the tooth face of fluted disc 35 bottom edge and the upper side wall of cam 32 are mutual contactless.
Referring to fig. 3, 4 and 8, a connecting seat 8 is fixed at the lower side of the inner cavity wall of the tool base 1, a driving motor 81 is installed at one side of the connecting seat 8, a rotating wheel 82 fixed with an output shaft of the driving motor 81 is arranged in the middle of the connecting seat 8, an anti-deflection rail 85 is fixed on the surface of the tool base 1 close to the connecting seat 8, an upright 83 is connected inside the anti-deflection rail 85 in a sliding manner, a supporting plate 84 is fixed at the top of the upright 83, a circular through hole for the upright 83 to penetrate is formed in the middle of a fluted disc 35, and arc-shaped anti-deflection flanges are arranged on the upper surfaces of two ends of the supporting plate 84;
referring to fig. 10, an inclined hole is formed in the outer peripheral side surface of the rotating wheel 82, a receiving sleeve 821 is inserted in the inclined hole in an interference manner, a number four spring 822 is arranged in the receiving sleeve 821, one end of the number four spring 822 is abutted to a T-shaped rod 823, a limit post 824 is fixed at one end of the T-shaped rod 823, which is far away from the number four spring 822, a sawtooth protrusion is formed on the surface of the upright post 83, which is close to the limit post 824, and the sawtooth protrusion on the surface of the limit post 824 is in meshed connection with the limit post 824 on the outer peripheral side of the rotating wheel 82, and the limit post 824 and the T-shaped rod 823 form an elastic telescopic structure through the assistance of the number four spring 822 and the receiving sleeve 821.
In specific implementation, when the IGBT module needs to be placed in the test port on the top of the tooling base 1, the module body 10 needs to be placed in the supporting plate 84, and the supporting plate 84 is pressed down by the arc-shaped anti-deflection flange of the supporting plate 84 to perform anti-deflection limitation, so that the upright post 83 at the bottom of the supporting plate 84 extrudes the limit post 824 of the outer wall of the rotating wheel 82 through the sawtooth protrusion of the side wall, the downward-moving sawtooth protrusion can extrude the fourth spring 822 into the accommodating sleeve 821 from the T-shaped rod 823 at one end of the limit post 824, so that the limit post 824 of the cylindrical structure can be separated from the clamping connection with the sawtooth protrusion at the side surface of the upright post 83, and the upright post 83 slides down along the anti-deflection rail 85, and when the supporting plate 84 stops at a proper height, the supporting plate 84 can not move upward when the module body 10 is supported due to the clamping connection between the limit post 824 and the sawtooth protrusion at the side surface of the upright post 83;
and when the first spring 310 pulls the U-shaped frame 33 to rotate in a vertical state, the push block 332 moves downwards and releases the extrusion of the abutting block 64 by the assistance of the magnetic attraction and attraction between the magnet piece 331 and the connecting sleeve 31, and at the moment, the third spring 63 is convenient to push the transverse clamping seat 6 to drive the right-angle clamping port 61 on one side to clamp and limit the module body 10 supported on the supporting plate 84.
Referring to fig. 1, 3 and 11-13, a mechanical arm 71 is arranged on the outer side of the tension meter 7, a tension sensor 72 is fixed on the bottom of the tension meter 7, a forward and reverse rotation motor 73 is fixed on the lower side of the tension sensor 72, and a mounting bracket 74 is welded on the lower side of the forward and reverse rotation motor 73;
the output of positive and negative rotation motor 73 is fixed with tooth post 75, and the one side meshing of tooth post 75 is connected with tooth post 76 No. two, and tooth post 75 and the upside of tooth post 76 all pass through bearing and installing support 74 swivelling joint, and the bottom of tooth post 75 and tooth post 76 all welds and draws hook 77 No. two, and two sets of draw hooks 77 are perpendicular distribution with tooth post 75 and tooth post 76 respectively, and the tensiometer 7 adopts digital display tensiometer.
In specific implementation, when the module body 10 is limited and clamped at the position of a test port at the top of the tool base 1, the mechanical arm 71 is started to drive the tension meter 7 to move, and when the tension meter is horizontally adjusted, the forward and reverse rotation motor 73 at the bottom of the tension sensor 72 is started to perform forward operation, the forward and reverse rotation motor 73 drives the first tooth column 75 and the second tooth column 76 to be meshed and rotated by 90 degrees in the forward and reverse rotation direction, so that the first tooth column 75 and the second tooth column 76 are mutually separated to finish horizontal unfolding and are in a linear flat arranging state, at the moment, the arranging angle of the two groups of traction hooks 77 can be changed, and when the traction hooks 77 using the tension meter 7 are inserted into gaps of a plurality of bonding wires of the IGBT module to perform tensile strength test, the horizontally unfolded traction hooks 77 can adapt to the gaps of different bonding wires, and the traction hooks 77 can conveniently convert flat unobstructed insertion or direct insertion according to the gap sizes of the bonding wires;
when the bonding wires of the IGBT module are tested, the forward and reverse rotation motor 73 at the bottom of the tension sensor 72 is started to reversely rotate, the first tooth column 75 and the second tooth column 76 are driven to reversely engage and rotate by 90 degrees, so that the two groups of traction hooks 77 at the bottoms of the first tooth column 75 and the second tooth column 76 are switched from a horizontal unfolding state to a close combined state, at the moment, after the two groups of traction hooks 77 finish rotation in the gap between the two adjacent bonding wires, the two groups of traction hooks 77 can be butted on the lower side surfaces of the bonding wires, the mechanical arm 71 is started to drive the tension meter 7 to rise, the tension sensor 72 at the bottom of the tension meter 7 senses the traction hooks 77 to pull the bonding wires until the tension force is stretched, and the tension value is displayed through a display of the tension meter 7.
In summary, the mounting base 2 is placed on a designated test console, and the mounting holes on the side surface of the mounting base 2 are penetrated by using the fasteners, so that the device is firmly assembled at the designated position, the module body 10 is placed in the test port on the top of the tool base 1, the upper side surfaces of the two groups of longitudinal clamping seats 5 support and tightly support the two sides of the module body 10 upwards, the two groups of transverse clamping seats 6 are mutually close to the side edges of the module body 10 to clamp, the mechanical arm 71 drives the tension meter 7 to rise, the tension sensor 72 at the bottom of the tension meter 7 senses the force of pulling the bonding wire until the bonding wire is stretched, and the display of the tension meter 7 displays the tensile force value, so that the tensile strength of the IGBT module bonding wire is tested. The mechanical arm 71 drives the tension meter 7 to move in the direction of the prior art, and reference may be made to chinese patent publication No. CN101149331 a: the tensile testing device and the tensile testing method thereof, which are not described in detail in the present specification, belong to the prior art known to those skilled in the art.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (6)
1. IGBT module bonding line tensile test frock, including frock base (1), installation base (2) and tensiometer (7), its characterized in that:
the tool comprises a tool base (1), wherein a mounting base (2) is fixed at the bottom of the tool base (1), a test port is formed in the top of the tool base (1), an operating mechanism (3) is arranged on the tool base (1), the operating mechanism (3) comprises a connecting sleeve (31), a cam (32), clamping teeth (321), a U-shaped frame (33) and a handle (34), two groups of connecting sleeves (31) are arranged on two sides of the outer wall of the tool base (1), one of the connecting sleeves (31) is fixed at the front end of a central shaft, a plurality of clamping teeth (321) are arranged at the front end of the central shaft of one connecting sleeve (31) at equal intervals on the concave surface edge of the cam (32), longitudinal support arms of the U-shaped frame (33) penetrate and are inserted in the middle reserved holes of the two groups of the connecting sleeves (31), a handle (34) is welded on a horizontal support arm of the U-shaped frame (33), and the tool base (1) is close to the adjacent side of the connecting sleeve (31) and is reserved with a maintenance port, and a maintenance cover (9) is connected in a sliding mode;
a tension meter (7) is arranged on the upper side of the tool base (1), and a transverse clamping seat (6) is respectively arranged in a test port at the upper edge of the tool base (1); a fluted disc (35) is arranged on the upper side of the cam (32), arc-shaped butt joint blocks (36) are fixed on two sides of the top of the fluted disc (35), the upper side of each arc-shaped butt joint block (36) is in sliding connection with a sliding rail (37), and the top of each sliding rail (37) is welded with the lower edge of a test port of the tool base (1);
an adjusting port (38) is formed in the surface of the fluted disc (35), two sides of the outer wall of the tool base (1) are rotatably connected with a stop block (39), and a first spring (310) is fixedly connected between the stop block (39) and the U-shaped frame (33);
the inner wall surface of the testing port of the tool base (1) is welded with a cross rod (4) in parallel, a longitudinal clamping seat (5) is sleeved on the outer side of the cross rod (4), and the longitudinal clamping seat (5) slides with the cross rod (4) through a rectangular groove on the surface;
a sliding sleeve (51) is fixed on one side of the longitudinal clamping seat (5), an inserting rod (52) is inserted in the middle of the sliding sleeve (51) in a penetrating manner, the top of the inserting rod (52) is fixed with the lower edge of the transverse clamping seat (6), a second spring (53) sleeved with the inserting rod (52) is abutted to the upper side of the sliding sleeve (51), and the inserting rod (52) is inserted in an adjusting port (38) on the surface of the fluted disc (35);
a right-angle clamping opening (61) is formed in one side, close to each other, of each of the two groups of transverse clamping seats (6), a guide strip (62) connected with a dovetail groove at the upper edge of the tool base (1) is fixed on the surface of each transverse clamping seat (6), and a third spring (63) is connected between each transverse clamping seat (6) and the tool base (1);
one side of the transverse clamping seat (6) far away from the right-angle clamping opening (61) is fixedly provided with an abutting block (64), two longitudinal support arms of the U-shaped frame (33) are fixedly provided with magnet sheets (331), and the end parts of the two longitudinal support arms of the U-shaped frame (33) are fixedly provided with push blocks (332).
2. The IGBT module bonding wire tensile testing tool according to claim 1, wherein: the maintenance cover (9) consists of a barb plate at the upper side and an arc plate at the lower side, and a metal induction switch (91) is embedded and installed in the middle of the adjacent sides of the barb plate and the arc plate of the maintenance cover (9).
3. The IGBT module bonding wire tensile testing tool according to claim 1, wherein: the tool comprises a tool base (1), wherein a connecting seat (8) is fixed on the lower side of the inner cavity wall of the tool base (1), a driving motor (81) is installed on one side of the connecting seat (8), a rotating wheel (82) fixed with an output shaft of the driving motor (81) is arranged in the middle of the connecting seat (8), an anti-deflection rail (85) is fixed on the surface of the tool base (1) close to the connecting seat (8), an upright column (83) is connected to the inner side of the anti-deflection rail (85) in a sliding mode, and a supporting plate (84) is fixed on the top of the upright column (83).
4. The IGBT module bonding wire tension test tool according to claim 3, wherein: inclined holes are formed in the outer peripheral side surface of the rotating wheel (82), a containing sleeve (821) is inserted in the inclined holes in an interference mode, a fourth spring (822) is arranged in the containing sleeve (821), one end of the fourth spring (822) is abutted to a T-shaped rod (823), a limiting column (824) is fixed to one end, far away from the fourth spring (822), of the T-shaped rod (823), and sawtooth protrusions are formed in the surface, close to the limiting column (824), of the upright column (83).
5. The IGBT module bonding wire tensile testing tool according to claim 1, wherein: the outside of tensiometer (7) is provided with arm (71), the bottom of tensiometer (7) is fixed with tension sensor (72), the downside of tension sensor (72) is fixed with positive and negative rotation motor (73), the downside welding of positive and negative rotation motor (73) has installing support (74).
6. The IGBT module bonding wire tension test tool of claim 5, wherein: the output end of the forward and reverse rotation motor (73) is fixedly provided with a tooth column (75), one side of the tooth column (75) is connected with a tooth column (76) in a meshed mode, the upper sides of the tooth column (75) and the tooth column (76) are rotatably connected with a mounting bracket (74) through bearings, and traction hooks (77) are welded at the bottoms of the tooth column (75) and the tooth column (76).
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| CN202410033214.2A CN117538161B (en) | 2024-01-10 | 2024-01-10 | IGBT module bonding wire tensile test tool |
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| CN117538161B true CN117538161B (en) | 2024-03-19 |
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| CN116429573A (en) * | 2023-04-17 | 2023-07-14 | 北京工业大学 | Welding type IGBT module bonding wire tensile testing device and method |
| CN116660020A (en) * | 2023-07-31 | 2023-08-29 | 烟台一诺电子材料有限公司 | Bonding wire quality detection device |
| CN117347170A (en) * | 2023-10-24 | 2024-01-05 | 四川立泰电子有限公司 | Device and method for detecting reliability of bonding wire |
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| CN107907414A (en) * | 2017-11-23 | 2018-04-13 | 江阴苏阳电子股份有限公司 | A kind of radian rupture strength test method |
| CN111896862A (en) * | 2020-08-04 | 2020-11-06 | 广东金田半导体科技有限公司 | Device for improving reliability of semiconductor package |
| DE102021105335A1 (en) * | 2021-03-05 | 2022-09-08 | F&S Bondtec Semiconductor GmbH | Method and arrangement for determining the quality of a wire bond connection |
| CN115407170A (en) * | 2022-11-03 | 2022-11-29 | 烟台台芯电子科技有限公司 | Insulation test tool for IGBT module |
| CN116429573A (en) * | 2023-04-17 | 2023-07-14 | 北京工业大学 | Welding type IGBT module bonding wire tensile testing device and method |
| CN116660020A (en) * | 2023-07-31 | 2023-08-29 | 烟台一诺电子材料有限公司 | Bonding wire quality detection device |
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