CN118190622A - Test device - Google Patents

Abstract

The invention discloses a testing device which is used for testing the strength of chips and comprises a pressing head assembly and a supporting assembly, wherein the pressing head assembly and the supporting assembly are stacked, the pressing head assembly is used for applying pressure to the chips, and the supporting assembly is used for supporting the chips. The pressure head assembly comprises a first pressure head used for crimping a chip and a first adjusting device connected with the first pressure head; the two first pressure heads are arranged at intervals, and the first adjusting device is used for adjusting the relative distance between the two first pressure heads. Two adjustable distance's first pressure heads can adapt to multiple chip, need not frequent first pressure head of changing, practices thrift the cost, improves measuring accuracy.

Description

Test device

Technical Field

The invention relates to the field of chip packaging structures, in particular to a testing device.

Background

The chip package grinding process can be used for testing the breaking strength of the chip, and the upper pressure head for testing continuously applies force downwards to press the chip until the chip breaks, so that the pressure which the chip can bear is obtained. In the related art, the same upper pressure head may not be suitable for different chip sizes, and the pressure head needs to be replaced frequently corresponding to different test chips.

Disclosure of Invention

One of the objectives of the present invention is to provide a testing device, so as to solve the technical problem that the testing pressure head needs to be replaced frequently in the prior art.

In order to achieve one of the above objects, an embodiment of the present invention provides a testing apparatus, including: the pressure head assembly is used for applying pressure to the chip, and the support assembly is used for supporting the chip; the pressure head assembly comprises a first pressure head used for crimping a chip and a first adjusting device connected with the first pressure head; the two first pressure heads are arranged at intervals, and the first adjusting device is used for adjusting the relative distance between the two first pressure heads.

As a further improvement of an embodiment of the present invention, the first ram includes a first horizontal wall connected to the first adjusting means, a first vertical wall provided from a side surface of the first horizontal wall near the chip, and an end of the first vertical wall away from the first horizontal wall has an arc-shaped pressing face for pressing the chip.

As a further improvement of an embodiment of the present invention, a direction in which the two first vertical walls are arranged at intervals is a first direction, each of the first vertical walls extends in a second direction, the first direction and the second direction are horizontal directions, and the second direction is perpendicular to the first direction; the two first vertical walls are parallel to each other.

As a further improvement of an embodiment of the present invention, the first adjusting device drives the two first pressure heads to move in opposite directions or move in opposite directions along the first direction, and the direction in which the two first pressure heads are arranged at intervals is the first direction.

As a further improvement of an embodiment of the present invention, the first adjusting device includes a first mounting plate, the first mounting plate has a first sliding groove extending along a first direction, and the first adjusting device includes two first sliding blocks symmetrically disposed in the first sliding groove, and the two first sliding blocks are respectively and fixedly connected with the two first pressure heads.

As a further improvement of an embodiment of the present invention, the first adjusting device includes a screw rod disposed along a second direction, a driving block sleeved on the screw rod and in threaded engagement with the screw rod, and two connecting rods disposed on two sides of the driving block along the first direction, where each connecting rod is movably connected to the driving block and the first sliding block; the first direction and the second direction are horizontal directions, and the first direction is perpendicular to the second direction.

As a further improvement of one embodiment of the present invention, the screw rod is disposed at a middle position of the first mounting plate along the first direction, and the first adjusting device is disposed symmetrically with respect to a central axis of the screw rod.

As a further development of an embodiment of the invention, the first mounting plate has a reference surface extending in a first direction, the reference surface being provided with scale markings.

As a further improvement of an embodiment of the present invention, the screw rod has an operating end disposed in cooperation with the reference surface, and the first adjusting device includes an adjusting knob disposed at the operating end.

As a further improvement of an embodiment of the present invention, the first adjusting device includes a second mounting plate fixedly connected to the first mounting plate, and the screw rod, the driving block, and the connecting rod are installed between the first mounting plate and the second mounting plate.

As a further improvement of an embodiment of the present invention, the device comprises a second adjusting device connected to the first adjusting device, wherein the second adjusting device is used for driving the first adjusting device to move, so as to simultaneously drive the two first pressure heads to move in the same direction relative to the chip.

As a further improvement of an embodiment of the present invention, the second adjusting device includes a rectangular frame fixedly connected to the first adjusting device, and a first adjusting member cooperating with the rectangular frame to drive the rectangular frame to move along a first direction, where a direction in which the two first pressing heads are arranged at intervals is the first direction.

As a further improvement of an embodiment of the present invention, the rectangular frame body is made of flexible material, and the rectangular frame body includes deformation grooves disposed at four diagonal positions.

As a further improvement of an embodiment of the present invention, the extending direction of each deformation groove is a diagonal direction of the rectangular frame at the corresponding place.

Compared with the prior art, the invention provides the testing device for the chip strength, the pressure head assembly comprises the two first pressure heads which are arranged at intervals, and the first adjusting device can adjust the distance between the two pressure heads, so that the testing device can adapt to various chips, the first pressure heads do not need to be replaced frequently, the cost is saved, and the measuring accuracy is improved.

Drawings

FIG. 1 is a perspective view of a testing device in accordance with one embodiment of the present invention.

FIG. 2 is a front view of a testing device in an embodiment of the invention.

Fig. 3 is a perspective view of a press head assembly according to an embodiment of the present invention.

Fig. 4 is a perspective view of another angle of the press head assembly according to an embodiment of the present invention.

FIG. 5 is a schematic illustration of the ram assembly with the first ram removed in accordance with one embodiment of the present invention.

FIG. 6 is a schematic illustration of the ram assembly with the first ram and the first mounting plate removed in accordance with one embodiment of the invention.

Fig. 7 is a top view of a first adjustment device in an embodiment of the invention.

Fig. 8 is a top view of a second adjustment device in an embodiment of the invention.

Fig. 9 is a cross-sectional view of a second adjustment device in an embodiment of the invention.

Fig. 10 is a perspective view of a support assembly in an embodiment of the invention.

Fig. 11 is a top view of a support assembly according to an embodiment of the invention.

Fig. 12 is a cross-sectional view of a support assembly in an embodiment of the invention.

Fig. 13 is an exploded view of a portion of the structure of a support assembly in accordance with one embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.

It should be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The terms "connected," "connected to," or any other variation thereof, are intended to cover a variety of relative positions in a connected relationship, such that a direct connection or an indirect connection is included. The direct connection may be formed by constructing a gas path pipeline, and the indirect connection may be formed by constructing a connection relationship by using devices such as a valve body and a sensor, constructing a connection relationship by using gas path components such as a brake control unit, or constructing a connection relationship by using any other medium such as air.

Referring to fig. 1, a schematic structural diagram of a testing apparatus 1000 according to an embodiment of the invention is provided for testing the strength of a chip, and includes a pressing head assembly 100 and a supporting assembly 300 stacked along a height direction, wherein the pressing head assembly 100 is used for applying pressure to the chip, and the supporting assembly 300 is used for supporting the chip. In a specific application, the chip is placed on the support assembly 300, and the pressure head assembly 100 continuously pushes and applies force to the chip until the chip breaks, so as to obtain a pressure value during breaking.

In connection with the simulation test shown in fig. 2, the corresponding calibration block 200 is placed on the support assembly 300, and after the positions of the support assembly 300 and the pressure head assembly 200 are adjusted, the calibration block 200 is removed, and the chip is placed.

The ram assembly 100 includes a first ram 10 for crimping a chip, a first adjustment device 20 coupled to the first ram 10; the two first rams 10 are spaced apart, and the first adjusting device 20 is configured to adjust the relative distance between the two first rams 10. In this way, the two first pressure heads 10 can adapt to chips with different sizes, and the first cutter head 10 does not need to be replaced frequently. The arrangement direction of the two first pressing heads 10 is a first direction, each first pressing head 10 extends along a second direction as a whole, the first direction and the second direction are horizontal directions, and the first direction is perpendicular to the second direction.

The first ram 10 includes a first horizontal wall 11 connected to a first adjusting means 20, a first vertical wall 12 provided from the first horizontal wall 11 near a side surface of the chip, the first horizontal wall 11 and the first vertical wall 12 being perpendicular to each other. The end of the first vertical wall 12, which is far away from the first horizontal wall 11, is provided with an arc-shaped pressing surface 120 for pressing the chip, and the arc-shaped pressing surface is more concentrated in force application relative to the plane pressing.

Referring to fig. 2-3, two first horizontal walls 11 are arranged at intervals and are attached to a first mounting plate 21 connected with a first adjusting device 20, two first vertical walls 12 are arranged at intervals, each first vertical wall extends along a second direction, and the two first vertical walls 12 are parallel to each other, so that the chips are favorably pressed symmetrically and stably, and more accurate pressure values during fracture are obtained.

The first adjusting device 20 drives the two first rams 10 to move in opposite directions or back to back in the first direction at the same time, in other words, the two first rams 10 are close to each other or far away from each other in the first direction so as to adjust the distance therebetween. The first adjusting device 20 drives the first pressing head 10 to move oppositely or back by driving the two first horizontal walls 11 to move oppositely or back.

Referring to fig. 4-7, the first adjusting device 20 includes a first mounting plate 21 disposed horizontally, the first mounting plate 21 has a first sliding groove 210 extending along a first direction, the first adjusting device 20 includes two first sliding blocks 22 symmetrically disposed in the first sliding groove 210, and the two first sliding blocks 22 are fixedly connected to the two first pressure heads 10 respectively.

In one embodiment, the surface of the first horizontal wall 11 near the first mounting plate 21 is provided with a mounting groove 111, the mounting groove 111 is located in the middle of the first horizontal wall 11 along the second direction, and each first sliding block 22 is fixed to the mounting groove 111 by a fastener, or the first sliding block 22 is fixedly connected to the first horizontal wall 11 by other fastening structures, such as a dovetail structure. In this way, the two first sliding blocks 22 stably drive the two first pressing heads 10 to move in opposite directions or move in opposite directions in the first sliding groove 210.

The first mounting plate 21 has auxiliary sliding grooves 211 extending along the first direction, the auxiliary sliding grooves 211 are symmetrically disposed on two sides of the first sliding groove 210 along the second direction, the ram assembly 100 is provided with a sliding column 112 at a position of the first horizontal wall 11 corresponding to the auxiliary sliding grooves 211, and the sliding column 112 is fixed on two ends of the first horizontal wall 11 along the second direction and slidably connected in the auxiliary sliding grooves 211. In this way, the middle position of the first pressure head 10 is slidable through the first sliding block 22, and the two ends of the first pressure head 10 can also slide along the auxiliary sliding grooves 211 respectively, which is beneficial to the uniform and stable sliding of the whole first pressure head 10.

The first adjusting device 20 comprises a screw rod 23 arranged along the second direction, a driving block 24 sleeved on the screw rod 23 and in threaded fit with the screw rod 23, and two connecting rods 25 arranged on two sides of the driving block 24 along the first direction, wherein each connecting rod 25 is movably connected with the driving block 24 and the first sliding block 22. Thus, the two first sliding blocks 22 are respectively driven to move so as to drive the first ram 10 to move.

During actual adjustment, the screw rod 23 rotates to drive the driving block 24 to do linear motion along the second direction, and the connecting rods 25 at two sides of the driving block 24 start to move. The first end 251 of the link 25 is rotatably coupled to the driving block 24 and moves in the second direction, and the second end 252 of the link 25 is rotatably coupled to the first slider 22 and moves in the first direction under the restriction of the first slider groove 210. The driving block 24 can drive the two connecting rods 25 to synchronously move, so that the second ends 252 of the two connecting rods simultaneously move close to the screw rod 23 or simultaneously move away from the screw rod 23, and the two first sliding blocks 22 synchronously move towards each other or move away from each other, in other words, the two first sliding blocks 22 can symmetrically move.

Further, the screw 23 is disposed at a middle position of the first mounting plate 21 along the first direction, and the first adjusting device 20 is symmetrically disposed with respect to a central axis of the screw 23. The first ram 10 needs to move along a first direction, and the first adjusting device 20 is symmetrically arranged along the first direction, so that the first ram 10 moves symmetrically along the first direction, and after the adjustment, the first ram 10 can also keep symmetrically pressing the chip. The screw 23 is further located at the middle position of the first mounting plate 21, and it is known that the driving block 24, the connecting rod 25, and the first sliding block 22 are also located at two symmetrical sides of the first mounting plate 21.

The first mounting plate 21 has a reference surface 212 extending in a first direction, the reference surface 212 being provided with scale markings. Thus, the device can be used for reference when the operator adjusts.

The screw 23 has an operating end that cooperates with the reference surface 212, and the first adjusting device 20 includes an adjusting knob 26 disposed at the operating end. The adjusting knob 26 is manually turned to drive the screw rod 23 to rotate, so that the adjusting function of the first adjusting device 20 is realized, and meanwhile, the adjustment can be directly performed by referring to the scale marks.

Specifically, the adjusting knob 26 is arranged at the middle position of the first mounting plate 21 along the first direction, the scale value of the scale mark is gradually increased along the two sides of the first direction at the position of zero scale which just corresponds to the scale mark, when the distance between the two first pressure heads 10 needs to be adjusted to be 2 cm, the adjusting knob 26 is rotated, the two first pressure heads 10 respectively move to the scale position corresponding to 1 cm, the precision can be guaranteed at the ends of the two first pressure heads 10, and the distance precision of adjustment between the two first pressure heads 10 is higher.

The first adjusting device 20 comprises a second mounting plate 27 fixedly connected with the first mounting plate, and the screw rod 23, the driving block 24 and the connecting rod 25 are arranged between the first mounting plate 21 and the second mounting plate 27.

Specifically, as shown in connection with fig. 6-7, a positioning structure is provided between the first mounting plate 21 and the second mounting plate 27, and the positioning structure includes a first positioning groove/first positioning post 213 provided on the first mounting plate 21, and a second positioning post/second positioning groove 271 provided on the second mounting plate 27 and cooperating with the first positioning groove/first positioning post 213. The locating formations are located at corresponding corners of the first mounting plate 21 and the second mounting plate 27.

The first mounting plate 21 is near the upper surface of the second mounting plate 27 to form a first accommodating groove 214 in a recessed manner to mount the screw rod 23, the driving block 24 and the connecting rod 25, the first accommodating groove 214 is communicated with the first sliding groove 210, it can be understood that the first sliding groove 210 penetrates the first mounting plate 21 up and down so that the first sliding block 22 can extend downwards and be connected with the first pressure head 10, and the first accommodating groove 214 does not need to penetrate downwards, only needs to provide an accommodating space.

Correspondingly, the second mounting plate 27 is recessed near the lower surface of the first mounting plate 21 to form a second receiving groove 272, and receives the screw rod 23, the driving block 24, and the link 25. It can be appreciated that the second receiving groove 272 does not need to extend upwardly.

Thus, the first mounting plate 21 and the second mounting plate 27 can be fixed in a pasting manner, and the screw rod 23, the driving block 24 and the connecting rod 25 can be accommodated between the first mounting plate 21 and the second mounting plate, so that the shielding effect is achieved, the structure is reasonably utilized, and the space occupation is reduced.

In other embodiments, the first receiving groove 214 may be provided to fully receive the screw 23, the driving block 24, and the connecting rod 25, but the first mounting plate 21 needs to be relatively thick to provide a deeper first receiving groove 214. In further embodiments, the second receiving groove 272 may be provided to fully receive the screw 23, the driving block 24, and the link 25, but the second mounting plate 27 may require a relatively thicker thickness to provide a deeper second receiving groove 272.

The indenter assembly 100 further comprises a second adjusting device 30 connected to the first adjusting device 20, wherein the second adjusting device 30 is configured to drive the first adjusting device 20 to move, so as to drive the two first indenters 10 to move in the same direction relative to the chip.

Referring to fig. 8-9, the second adjusting device 30 includes a rectangular frame 31 fixedly connected to the first adjusting device 20, and a first adjusting member 32 cooperating with the rectangular frame 31 to drive the rectangular frame 31 to move in a first direction.

The first adjusting device 20 includes a connection block 273, the connection block 273 is fixedly connected with the rectangular frame 31, and the threaded portion of the first adjusting member 32 passes through the connection block 273 in the first direction and is connected to the rectangular frame 31.

Specifically, the upper surface of the second mounting plate 27 is provided with a connection block 273, the connection block 273 and the second mounting plate 27 are integrally formed, or the connection block 273 may be fixedly connected by a fastener or a fastening structure. Each connection block 273 extends in the second direction, and two connection blocks 273 are located on both sides of the second mounting plate 27 in the first direction, respectively.

The rectangular frame 31 is located between the two connection blocks 273, and the rectangular frame 31 includes a first side 311, a second side 312, a third side 313, and a fourth side 314 connected in sequence. The first side 311 and the third side 313 are disposed opposite to each other in a first direction, and the second side 312 and the fourth side 314 are disposed opposite to each other in a second direction.

The rectangular frame 310 is fixedly connected with the connecting block 273 near the first edge 311 and the third edge 313 of the connecting block 273, so that the rectangular frame 310 can drive the connecting block 273 to move, thereby driving the second mounting plate 27 to move and driving the first adjusting device 20 to move, and realizing the function of fine-adjusting the first pressure head 10.

Unlike the first adjustment device 20, the second adjustment device 30 integrally moves the first adjustment device 20, thereby integrally moving the first ram 10, in other words, the first ram 10 moves in the same direction when the second adjustment device 30 is active, i.e., simultaneously moves to the left in the first direction or simultaneously moves to the right in the first direction, to adjust the horizontal centering alignment of the first ram 10 with respect to the chip.

The first adjusting member 32 passes through the connection block 273 in the first direction and is connected to the rectangular frame 31, more specifically, the first adjusting member 32 is an adjusting screw, a threaded portion of the first adjusting member 32 is engaged with the rectangular frame 31, and when the first adjusting member 32 rotates, it can be converted into a linear motion of the rectangular frame 31 in the first direction, so that a linear motion of the connection block 273 in the first direction is realized.

Specifically, the two first connection blocks 273 are provided with the first regulating members 32, respectively, in other words, the first side 311 and the third side 313 of the rectangular frame body 31 are provided with the first regulating members 32 so as to be adjustable both leftward and rightward in the first direction. Each connecting block 273 is provided with two first adjusting members 32, and the first adjusting members 32 are symmetrically arranged along the first direction and the second direction.

The rectangular frame 31 is made of a flexible material, and the rectangular frame 31 includes deformation grooves 310 provided at four diagonal corners, so that the rectangular frame 31 can be elastically deformed. Specifically, when the first adjusting member 32 corresponding to the first edge 311 is adjusted, the first adjusting member 32 is screwed to drive the first edge 311 to move toward the third edge 313. The first edge 311 can elastically deform toward the third edge 313, and then drives the rectangular frame 31 to move rightwards integrally, which is beneficial to prolonging the service life of the rectangular frame 31.

The extending direction of each deformation groove 310 is the diagonal direction of the rectangular frame 31 at the corresponding location, in other words, the connecting lines of the four deformation grooves 310 are exactly two diagonal lines intersecting the rectangular frame 31, which is beneficial to the elastic deformation of the first edge 311 and the third edge 313.

The pressure head assembly 100 comprises a pressure block 60 arranged in the rectangular frame 31, wherein two sides of the pressure block 60 along the first direction are arranged at intervals with a first edge 311 and a third edge 313, and two ends of the pressure block 40 along the second direction are fixedly connected with a second edge 312 and a fourth edge 314. As such, the first side 311 and the third side 313 have deformation trim spaces in the first direction.

In actual use, when the first adjusting member 32 at the position corresponding to the first edge 311 or the third edge 313 is adjusted as required, the first adjusting member 32 is rotated, and the head of the first adjusting member 32 abuts against the connecting block 273 and cannot move towards the rectangular frame 31, so that the movement of the first edge 311 of the rectangular frame 31 away from the first adjusting member 32 is converted into the movement of the first edge 311 towards the third edge 313, the force of the first edge 311 moving towards the third edge 313 drives the rectangular frame 31 to integrally move to the right and drives the connecting block 273 to move to the right, thereby driving the two first pressure heads 10 to simultaneously perform fine adjustment to the right.

In this way, the ram assembly 100 can adjust the relative distance between the two first rams 10 through the first adjusting device 20 to adapt to different chips or different application scenarios; the second adjusting device 30 can also be used for adjusting the two first pressure heads to be simultaneously and finely adjusted to the right or the left so as to realize the horizontal centering alignment relative to the chip to be measured and improve the accuracy of measurement.

As shown in connection with fig. 10-13, the test apparatus 1000 further includes a support assembly 300 for positioning the chip. The support assembly 300 includes a support block 40 and a third adjusting device 50 for adjusting the position of the support block 40. In the embodiment, the structure of the supporting block 40 is substantially identical to that of the first ram 10, and will not be described herein, except that the first horizontal wall of the supporting block 40 is larger than the first ram 10. In other embodiments, it may be provided to be entirely uniform.

The supporting block 40 is disposed opposite to the first pressing head 10 to clamp the chip therebetween for force measurement. The two support blocks 40 are spaced apart along the first direction, and the third adjusting device 50 is used for adjusting the position of each support block 40. The chip is in two-point contact with the supporting block 40, and the chip is also in two-point contact with the first pressing head 10, so that the chip is broken when being subjected to a certain critical pressure value, and the pressure value at the time of breaking is tested.

The third adjusting device 50 includes a fixed plate 51, a second adjusting member 52 disposed on the fixed plate 51, and a sliding plate 53 disposed in cooperation with the second adjusting member 52. The two sliding plates 53 are respectively connected to the two supporting blocks 40 to move the two supporting blocks 40.

The third adjusting means 50 includes slide bars 54 disposed at intervals in the second direction, each slide bar 54 extending in the first direction, both ends of each slide bar 54 in the first direction being fixed to the fixed plate 51 such that the slide bars 54 provide a stable sliding track. Both ends of each sliding plate 53 in the second direction pass through two sliding rods 54, respectively, to move along the sliding rods 54 in the first direction, facilitating uniform sliding.

Specifically, the fixing plate 51 includes a base plate 511 and two vertical plates 512 located at two sides of the base plate 511 along the first direction, the base plate 511 is a horizontal plate, and the vertical plates 512 are perpendicular to the base plate 511. The base plate 511 and the vertical plate 512 may be integrally formed, or may be fixedly connected by a fastener or a snap structure. The substrate 511 and the vertical plate 512 enclose a receiving space 510. The slide rod 54 and the slide plate 53 are positioned in the accommodating space 510.

The second adjusting member 52 is an adjusting screw, and the threaded portion of the second adjusting member 52 passes through the vertical plate 512 and enters the accommodating space 510, and the end of the second adjusting member 52 abuts against the sliding plate 53 to push the sliding plate 53 to move. Each adjusting member 52 is located at an intermediate position between the two sliding rods 54, and the two second adjusting members 52 are respectively disposed at two sides of the fixed plate 51 along the first direction.

An elastic member 55 is provided between the two slide plates 53 to provide a restoring force of the slide plates 53. Specifically, the elastic member 55 is sleeved at a middle position of the sliding rod 54 along the first direction, and two sides of the elastic member 55 respectively abut against the two sliding plates 53. In other words, the slide rod 54 passes through the slide plate 53, and both sides of the first direction of the slide plate 53 are provided with the elastic member 55 and the second regulating member 52, respectively, to achieve the leftward or rightward movement in the first direction.

Thus, when the second adjusting member 52 on the right side is adjusted, the second adjusting member 52 pushes the sliding plate 53 to the left, the sliding plate 53 slides along the sliding rod 54 to the left, the supporting block 40 on the right side is driven to move to the left, the supporting block 40 on the right side pushes the elastic member 55, and the elastic member 55 is compressed to the right; it will be appreciated that although the elastic member 55 is compressed rightward, since the other end abuts the left slide plate 53 and the left slide plate 53 abuts the left second adjusting member 52, the left slide plate 53 is not interlocked, in other words, the left slide plate 53 is not affected when the right slide plate 53 is adjusted.

When the second adjusting member 52 moves rightward, it cannot push the sliding plate 53, but the elastic member 55 is compressed to restore its original shape, so as to push the sliding plate 53 rightward, and provide a force for moving the sliding plate 53 rightward. It will be appreciated that the movement of the second adjusting member 52 to the right, the release of the elastic force of the elastic member 55 pushes the slide plate 53 to the right, and does not affect the slide plate 53 on the left and the second adjusting member 52 on the left.

It will be appreciated that the second adjustment member 52 on the left is exactly the same adjustment principle as the right, but in the opposite direction. When the second adjusting piece 52 on the left side and the slide plate 53 on the left side are adjusted, the second adjusting piece 52 on the right side and the slide plate 53 on the right side are not affected either.

Therefore, the third adjusting device 50 is symmetrically arranged, and can be used for adjusting both sides at the same time, but is not used for symmetrical adjustment. There is no particular linkage between the two second adjustment members 52 and the two slide plates 53. The third adjusting device 50 is used for adjusting the positions of the two supporting blocks 40 separately to adjust the relative distance between the two supporting blocks 40 according to different chips, and can also perform motion adjustment of the two supporting blocks 40 along the same direction for horizontal centering alignment with the chips.

In practical use, the testing device 1000 of the present application selects a proper calibration block 200 according to a chip, places the calibration block 200 on the support assembly 300, and the upper surface of the calibration block 200 is correspondingly provided with two first grooves for referencing and adjusting the position of the first indenter 10, and the lower surface of the calibration block 200 is correspondingly provided with two second grooves for referencing and adjusting the position of the support block 40, when the two first indenters 10 are aligned with the first grooves, and the two support blocks 40 are aligned with the second grooves, it is explained that the support assembly 200 and the indenter assembly 100 are adjusted to be located at a proper measurement position.

In the specific adjustment, the third adjusting device 50 is first adjusted, and the two second adjusting members 52 are respectively operated to adjust the distance between the two supporting blocks 40 to a predetermined width; then the first adjusting device 20 is adjusted, the scale mark is referenced, and the adjusting knob 26 is operated; finally, a fine adjustment of the second adjusting device 40 can also be performed to adjust the horizontal centering of the two first rams 10.

The invention has the beneficial effects that: the ram assembly 100 includes a first adjusting device 20 for adjusting the relative distance between two first rams 10 to accommodate different chips, and setting the first rams 10 with different pitches corresponding to different chips, so that the first rams 10 do not need to be replaced frequently, thereby saving cost and improving measurement accuracy; the first adjusting device 20 is symmetrically adjusted, and an adjusting knob 26 is operated to drive the two first pressure heads 10 to move oppositely or back at the same time; the second adjusting device 30 drives the first adjusting device 20 to integrally move, so that the two first pressure heads are driven to move in the same direction, the two first pressure heads are adjusted to be aligned with the horizontal center of the chip, and the measuring accuracy is improved; the rectangular frame 31 is made of flexible materials, and four deformation grooves 310 are formed in the opposite corners, so that the service life of the second adjusting device 30 is prolonged.

Any technical solution provided in the foregoing may be referred to for corresponding formation, and will not be described herein.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims (14)

1. A test apparatus for testing the strength of a chip, comprising: the pressure head assembly is used for applying pressure to the chip, and the support assembly is used for supporting the chip; the pressure head assembly comprises a first pressure head used for crimping a chip and a first adjusting device connected with the first pressure head; the two first pressure heads are arranged at intervals, and the first adjusting device is used for adjusting the relative distance between the two first pressure heads.

2. The test device of claim 1, wherein the first ram comprises a first horizontal wall connected to the first adjustment device, a first vertical wall disposed from the first horizontal wall proximate a side surface of the chip, the first vertical wall having an arcuate crimping surface at an end thereof distal from the first horizontal wall for crimping the chip.

3. The test device of claim 2, wherein the direction in which the two first vertical walls are spaced apart is a first direction, each of the first vertical walls extending in a second direction, the first and second directions being horizontal directions, the second direction being perpendicular to the first direction; the two first vertical walls are parallel to each other.

4. The testing device of claim 1, wherein the first adjusting device drives the two first pressure heads to move in opposite directions or back to back in a first direction, and a direction in which the two first pressure heads are arranged at intervals is the first direction.

5. The testing device of claim 4, wherein the first adjusting device comprises a first mounting plate, the first mounting plate has a first sliding groove extending along a first direction, the first adjusting device comprises two first sliding blocks symmetrically arranged in the first sliding groove, and the two first sliding blocks are respectively and fixedly connected with two first pressure heads.

6. The testing device according to claim 5, wherein the first adjusting device comprises a screw rod arranged along the second direction, a driving block sleeved on the screw rod and in threaded fit with the screw rod, and two connecting rods arranged on two sides of the driving block along the first direction, wherein each connecting rod is movably connected with the driving block and the first sliding block; the first direction and the second direction are horizontal directions, and the first direction is perpendicular to the second direction.

7. The test device of claim 6, wherein the screw is disposed in a first direction at a middle position of the first mounting plate, and the first adjusting device is disposed symmetrically about a central axis of the screw.

8. The test device of claim 6, wherein the first mounting plate has a reference surface extending in a first direction, the reference surface being provided with scale markings.

9. The test device of claim 8, wherein the screw has an operating end disposed in cooperation with the reference surface, and the first adjustment means comprises an adjustment knob disposed at the operating end.

10. The test device of claim 6, wherein the first adjustment device comprises a second mounting plate fixedly connected to the first mounting plate, and the screw, the drive block, and the connecting rod are mounted between the first mounting plate and the second mounting plate.

11. The testing device of claim 1, comprising a second adjustment device coupled to the first adjustment device, the second adjustment device configured to move the first adjustment device to simultaneously move the two first indenters in a same direction relative to the die.

12. The test device of claim 11, wherein the second adjustment device comprises a rectangular frame fixedly connected to the first adjustment device, and a first adjustment member cooperating with the rectangular frame to drive the rectangular frame to move in a first direction, the direction in which the two first rams are spaced apart being the first direction.

13. The test device of claim 12, wherein the rectangular frame is a flexible material, the rectangular frame including deformation grooves disposed at four diagonal corners.

14. The test device of claim 13, wherein the extension direction of each deformation groove is a diagonal direction of the rectangular frame at the corresponding position.