CN115290940A

CN115290940A - Twisting clamp for 4.5 inch probe card

Info

Publication number: CN115290940A
Application number: CN202210874571.2A
Authority: CN
Inventors: 邹磊
Original assignee: Suzhou Silicon Test System Co ltd
Current assignee: Suzhou Silicon Test System Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-04

Abstract

The invention discloses a twisting clamp for a 4.5 inch probe card, which comprises a first base and an adjusting mechanism, wherein the upper sides of the first base and the adjusting mechanism are both provided with a clamp base, one side of the clamp base is provided with a sliding groove, the inner side of the sliding groove is connected with a clamping strip in a sliding manner through a lifting mechanism, the lifting mechanism comprises a lifting screw rod, a lifting nut and a rotary wheel, the lifting screw rod is rotatably arranged in the clamp base through a bearing, the lifting nut is fixed on one side of the clamping strip, the rotary wheel is fixed at the lower end of the lifting screw rod, the lifting nut is sleeved on the lifting screw rod, and the upper side of the clamp base is provided with a stop plate; according to the universal interface with the size of 4.5 inches wide for fixedly clamping the probe card by the client probe station, the probe card clamping tool can clamp the probe card made of a PCB with the width of 4.5 inches, and only the twisting rotary wheel is needed to realize the lifting of the bar pressing block so as to clamp and release the PCB of the probe card when in use, so that the action of screwing a screwdriver and the operation of regularly replacing screws are avoided.

Description

Twisting clamp for 4.5 inch probe card

Technical Field

The invention belongs to the technical field of probe card production, and particularly relates to a twisting clamp of a 4.5 inch probe card.

Background

The probe card clamp is a necessary tool for clamping the probe card in the production process and the maintenance process of the probe card and facilitating operation, and mainly has the following functions: the probe card is clamped, the assembled probe card is provided with protruding objects on the upper and lower surfaces of the PCB (a test head part is arranged on the lower surface of the PCB, a signal connector, an electronic component and the like are arranged on the upper surface of the PCB), when the probe card is subjected to subsequent work, a clamping tool is required to clamp the edge of the PCB, and the protruding objects on the upper and lower surfaces of the PCB are in a suspended state, so that the subsequent work can be conveniently carried out without colliding or contacting; the warping degree of the PCB is corrected, the warping value of the warped PCB is reduced by clamping force, the integral flatness of the probe card is improved, and the contact performance of the probe card is improved.

The prior art has the following disadvantages:

1) In the probe card industry, a screw screwing mode is adopted for screwing or unscrewing so that the pressing strip generates pressure to clamp and loosen the PCB of the probe card, a screwdriver is required to be used for screwing or unscrewing in the process, the screwing position of the screwdriver is easy to wear, and the screw needs to be replaced irregularly;

2) The PCB is formed by pressing multiple layers of FR4 (glass fiber epoxy resin) or polymid (polyamide), the PCB can be warped in different degrees, the PCB has different qualities, the warping degree and the flatness of the whole PCB can be greatly different, the clamp clamps the PCBs with different material numbers frequently, the conventional clamp clamps clamp the screws tightly, so that the pressure generated by the pressing strips is mainly distributed in a point shape around the screws, and the effect of flattening and correcting the warping of the PCB is small;

3) The probe card is manufactured by using a clamp in the clamping direction that the needle point faces upwards, the pressing strip is contacted with the lower surface of the PCB, the pressed surface is the lower surface of the PCB, and the static surface is the upper surface of the PCB. When the probe card is used at a client side, the needle point faces downwards, the fastening pressing strip is in contact with the upper surface of the PCB, the pressing is the upper surface of the PCB, the static surface is the lower surface of the PCB, when the warping amplitude of the PCB is large, the acting surface of the conventional clamp for pressing the warping of the PCB is different from that of the conventional clamp in actual use, and the effect difference is large.

To this end, we propose a 4.5 inch probe card twist clamp.

Disclosure of Invention

The invention aims to provide a twisting clamp for a 4.5 inch probe card, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: 4.5 cun probe card rubs with hands anchor clamps, including first base and adjustment mechanism, first base and adjustment mechanism's upside all is provided with the anchor clamps base, the sliding tray has been seted up to one side of anchor clamps base, there is the centre gripping strip inboard through elevating system sliding connection, elevating system includes to rotate the lifting screw who installs in the anchor clamps base through the bearing, fixes the lifting nut in centre gripping strip one side and fixes the gyro wheel at the lifting screw lower extreme, the lifting nut cover is established on the lifting screw, the upside of anchor clamps base is provided with the locking plate, and one side position of locking plate corresponds with the position of centre gripping strip, the upper end of centre gripping strip is provided with the layering piece.

Preferably, a rotary groove is formed in the position, corresponding to the rotary wheel, of the lower end of the clamp base, and the outer side of the rotary wheel is located on the outer side of the clamp base.

Preferably, the cross-sectional shape of the clamping strip is set to be L-shaped, the lifting nut is located on one side of the lower end of the clamping strip, and the pressing strip block is located on the surface of the upper end of the clamping strip.

Preferably, the upper surface of the pressing strip block is matched with the shapes of the two ends of the probe card, a connecting inserting plate is arranged on the lower side of the pressing strip block, a connecting inserting groove is formed in the upper side of the clamping strip, and the connecting inserting plate is inserted into the connecting inserting groove.

Preferably, the cross-sectional shape of connecting the picture peg sets up to the T shape, the both ends of connecting the picture peg are rotated through the damping pivot and are connected with spacing commentaries on classics piece, spacing commentaries on classics piece laminating is at the both ends of centre gripping strip.

Preferably, the first base and the second base are connected with each other through an adjusting mechanism, connecting seats are arranged at two ends of the first base and the second base, and two ends of the adjusting mechanism are arranged on the connecting seats.

Preferably, the adjusting mechanism comprises an adjusting threaded sleeve, an adjusting screw rod and a fixing rod, one end of the adjusting threaded sleeve is rotatably installed on the connecting seat at one end of the first base through a bearing, one end of the fixing rod is fixed on the connecting seat at one end of the second base, the adjusting screw rod is integrally formed at the other end of the fixing rod, and the adjusting screw rod is screwed inside the adjusting threaded sleeve.

Preferably, one side of first base and second base all is provided with guide post and guide way, and passes through guide post and guide way sliding connection between first base and the second base.

Preferably, a limiting sliding groove is formed in one side of the guide post, a limiting sliding block is arranged at the end portion of the other side of the guide post, and the limiting sliding block is slidably mounted in the limiting sliding groove.

Preferably, the guide posts and the guide grooves are alternately arranged between the first base and the second base, and the width of the guide posts is the same as that of the guide grooves.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the universal interface with the size of 4.5 inches wide for fixedly clamping the probe card by the client probe station, the probe card clamping tool can clamp the probe card made of a PCB with the size of 4.5 inches wide, and only the twisting rotary wheel is needed to realize the lifting of the strip pressing block so as to clamp and loosen the PCB of the probe card when in use, so that the action of screwing a screwdriver and the operation of periodically replacing screws are avoided.

2. The clamping force generated by the rising of the rubbing pressing strip block is strip-shaped, the width of the pressing strip block is large, the contact surface area of the pressing strip block is distributed with the clamping force, and the twisting of the PCB is better corrected.

3. The pressure action surface of the clamp pressing bar block is consistent with the action surface on the PCB surface when the probe card is used by a client, so that the clamp is more suitable for practical use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a lifting clamp structure according to the present invention;

FIG. 3 is a schematic view of a connecting structure of the pressing bar blocks of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is a schematic view of a base adjustment guide structure of the present invention;

in the figure: 1. a first base; 2. an adjustment mechanism; 3. a second base; 4. a clamp base; 5. a sliding groove; 6. a clamping bar; 7. pressing a bar block; 8. a stopper plate; 9. a lifting mechanism; 10. rotating the wheel; 11. a lifting screw; 12. a lifting nut; 13. a limiting rotating block; 14. connecting the slots; 15. connecting the plugboards; 16. adjusting a threaded sleeve; 17. adjusting the screw rod; 18. fixing the rod; 19. a guide post; 20. a guide groove; 21. a limiting chute; 22. and a limiting sliding block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1 to 5, the present invention provides a technical solution: a 4.5 inch probe card twisting clamp comprises a first base 1 and an adjusting mechanism 2, wherein the upper sides of the first base 1 and the adjusting mechanism 2 are both provided with a clamp base 4, one side of the clamp base 4 is provided with a sliding groove 5, the inner side of the sliding groove 5 is connected with a clamping strip 6 in a sliding manner through a lifting mechanism 9, the lifting mechanism 9 comprises a lifting screw 11 which is rotatably arranged in the clamp base 4 through a bearing, a lifting nut 12 which is fixed on one side of the clamping strip 6 and a rotary wheel 10 which is fixed at the lower end of the lifting screw 11, the lifting nut 12 is sleeved on the lifting screw 11, the upper side of the clamp base 4 is provided with a stop plate 8, one side of the stop plate 8 corresponds to the position of the clamping strip 6, the rotary wheel 10 is rotated by hand to drive the lifting screw 11 to rotate, the lifting nut 12 and the clamping strip 6 are driven by the lifting screw 11 to ascend, so that the clamping strip 6 drives the clamping strip 7 and the 4.5 inch probe card to ascend and press on the stop plate 8, the upper end of the clamping strip 6 is provided with a strip pressing block 7, the rotary wheel 7 is convenient for clamping a PCB by the rotary wheel 10, and the rotary wheel 10 is arranged on the outer side of the clamp base 4; the cross-sectional shape of clamping strip 6 sets up to L shape, and lifting nut 12 is located clamping strip 6's lower extreme one side, and layering piece 7 is located clamping strip 6's upper end surface, and convenient clamping strip 6 goes up and down to slide when using and carries out the centre gripping to probe card PCB.

As apparent from the above description, the present invention has the following advantageous effects: the twisting rotary wheel 10 is adopted to rotate, so that the lifting screw 11 is driven to rotate, the lifting screw 11 drives the lifting nut 12 and the clamping strip 6 to ascend, the clamping strip 6 drives the clamping strip block 7 and the 4.5 inch probe card to ascend and descend, the PCB of the probe card is clamped and loosened, and the actions of screwing a screwdriver and the operation of replacing the screw regularly are avoided.

The clamping force generated by the rising of the rubbing pressing strip block is strip-shaped, the width of the pressing strip block is large, the contact surface area of the pressing strip block is distributed with the clamping force, and the twisting of the PCB is well corrected.

The pressure acting surface of the clamp bar pressing block is consistent with the acting surface on the PCB surface when the probe card is used by a client, so that the clamp is more suitable for practical use.

Example two:

referring to fig. 1 to 5, on the basis of the first embodiment, the present invention provides a technical solution: the upper surface of the pressing strip block 7 is matched with the shapes of two ends of a probe card, a connecting inserting plate 15 is arranged on the lower side of the pressing strip block 7, a connecting inserting groove 14 is formed in the upper side of the clamping strip 6, the connecting inserting plate 15 is inserted into the connecting inserting groove 14, the cross section of the connecting inserting plate 15 is T-shaped, two ends of the connecting inserting plate 15 are rotatably connected with limiting rotating blocks 13 through damping rotating shafts, the limiting rotating blocks 13 are attached to two ends of the clamping strip 6, before the clamping strip is used, the pressing strip block 7 corresponding to the shape matching is installed on the clamping strip 6 according to a circular or square 4.5 inch probe card or other probe cards, the connecting inserting plate 15 is inserted into the connecting inserting groove 14, and the limiting rotating blocks 13 are screwed down and attached to two ends of the clamping strip 6 to be fixed.

By adopting the technical scheme, the connecting inserting plate 15 is inserted into the connecting slot 14, and then the limiting rotating blocks 13 are screwed down to be attached to the two ends of the clamping strip 6 for installation, so that the installation can be carried out according to the shapes of the two ends of the probe card PCB.

Through 2 interconnect of adjustment mechanism between first base 1 and the second base 3, the both ends of first base 1 and second base 3 are provided with the connecting seat, install on the connecting seat at adjustment mechanism 2's both ends, adjustment mechanism 2 is including adjusting swivel nut 16, adjusting screw 17 and dead lever 18, the one end of adjusting swivel nut 16 is passed through the bearing and is rotated and install on the connecting seat of first base 1 one end, the one end of dead lever 18 is fixed on the connecting seat of second base 3 one end, adjusting screw 17 integrated into one piece is at the other end of dead lever 18, and adjusting screw 17 closes the inside of adjusting swivel nut 16 soon, rotate and adjust swivel nut 16, make adjusting screw 17 of dead lever 18 one end remove in adjusting swivel nut 16, thereby make and adjust swivel nut 16 and dead lever 18 drive first base 1 and second base 3 and move the regulation distance.

By adopting the technical scheme, the adjusting screw sleeve 16 is rotated, and the adjusting screw rod 17 is matched to adjust the adjusting distance between the adjusting screw sleeve 16 and the fixing rod 18, so that the clamp base 4 of the first base 1 and the second base 3 is driven to move for adjusting the distance, and the probe cards PCBs with different sizes can be clamped and processed conveniently.

Further, referring to fig. 1 and 4, one side of each of the first base 1 and the second base 3 is provided with a guide post 19 and a guide groove 20, the first base 1 and the second base 3 are slidably connected through the guide post 19 and the guide groove 20, and the first base 1 and the second base 3 are stably moved by being guided through the guide post 19 and the guide groove 20; a limiting sliding groove 21 is formed in one side of the guide post 19, a limiting sliding block 22 is arranged at the end portion of the other side of the guide post 19, the limiting sliding block 22 is slidably mounted in the limiting sliding groove 21, and the guide post 19 and the guide groove 20 slide stably and are limited by the limiting sliding block 22 and the limiting sliding groove 21; the guide posts 19 and the guide grooves 20 are alternately arranged between the first base 1 and the second base 3, and the width of the guide posts 19 is the same as that of the guide grooves 20, so that the guide posts 19 and the guide grooves 20 can slide conveniently and stably in use.

With the rapid development of the domestic integrated circuit industry, the whole chip industry can rapidly operate, and the probe card used as an interface part between a chip and a tester is a necessary article in the chip testing link; in macroscopical terms, the production efficiency of the probe card is improved, and the operation efficiency of the chip industry is also improved. The efficiency is improved on the company level, the production time and the production cost are reduced, and the method is one of the improvement of the energy efficiency of the company.

In the actual production process, the probe card of the twisting clamp of the 4.5 inch probe card has about 300 pieces/month, and in the production process (fixing, checking, grinding, adjusting, QC and maintaining) of each probe card, the clamp is generally used for loading and unloading for more than 30 times on average, the working time of more than 1 minute can be saved for each loading and unloading, which is equivalent to the manufacturing time of more than 0.5 hour for each probe card.

The working principle and the using process of the invention are as follows: when the clamping device is used, the corresponding pressing bar block 7 is installed on the clamping bar 6 according to the shapes of two ends of a 4.5 inch probe card, when the clamping device is installed, the connecting inserting plate 15 is only needed to be inserted into the connecting inserting groove 14, then the limiting rotating block 13 is screwed down to be attached to two ends of the clamping bar 6, the pressing bar block 7 can be installed at the upper end of the clamping bar 6, then the 4.5 inch probe card is placed on the pressing bar block 7, the rotating wheel 10 is rubbed with a hand to rotate, so that the lifting screw rod 11 is driven to rotate, the lifting screw rod 11 drives the lifting nut 12 and the clamping bar 6 to ascend, so that the clamping bar 6 drives the pressing bar block 7 and the 4.5 inch probe card to ascend and press on the stop plate 8 to be fixed, the clamping and installation are more convenient, so that the 4.5 inch probe card can be processed conveniently, when the probe cards with other sizes are clamped, only the adjusting screw sleeve 16 needs to rotate, so that the adjusting screw rod 17 at one end of the fixing rod 18 moves in the adjusting screw sleeve 16 and the fixing rod 18 drives the first base 1 and the second base 3 to move for adjusting distance, and the limiting sliding block 21 is matched with the second base 3 and the guiding groove 20 to be more stably matched with the guiding groove 20.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are 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. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

The twisting clamp of the 1.4.5 inch probe card is characterized in that: including first base (1) and adjustment mechanism (2), the upside of first base (1) and adjustment mechanism (2) all is provided with anchor clamps base (4), sliding tray (5) have been seted up to one side of anchor clamps base (4), there is centre gripping strip (6) inboard through elevating system (9) sliding connection of sliding tray (5), elevating system (9) include through bearing rotation install in anchor clamps base (4) lifting screw (11), fix lifting nut (12) in centre gripping strip (6) one side and fix at the gyro wheel (10) of lifting screw (11) lower extreme, lifting nut (12) cover is established on lifting screw (11), the upside of anchor clamps base (4) is provided with check plate (8), and the one side position of check plate (8) corresponds with the position of centre gripping strip (6), the upper end of centre gripping strip (6) is provided with presses strip piece (7).
2. The twisting clamp for a 4.5 inch probe card according to claim 1, wherein: the lower end of the clamp base (4) is provided with a rotating groove corresponding to the position of the rotating wheel (10), and the outer side of the rotating wheel (10) is positioned on the outer side of the clamp base (4).
3. The twisting clamp for a 4.5 inch probe card according to claim 1, wherein: the cross-sectional shape of centre gripping strip (6) sets up to L shape, lifting nut (12) are located the lower extreme one side of centre gripping strip (6), layering piece (7) are located the upper end surface of centre gripping strip (6).
4. The twisting clamp for a 4.5 inch probe card according to claim 1, wherein: the upper surface and the probe card both ends shape phase-match of layering piece (7), the downside of layering piece (7) is provided with connection picture peg (15), connecting slot (14) have been seted up to the upside of centre gripping strip (6), connecting slot (15) insert in connecting slot (14).
5. The twisting clamp for a 4.5 inch probe card according to claim 4, wherein: the cross-sectional shape of connection picture peg (15) sets up to the T shape, the both ends of connection picture peg (15) are rotated through the damping pivot and are connected with spacing commentaries on classics piece (13), spacing commentaries on classics piece (13) laminating is at the both ends of centre gripping strip (6).
6. The twisting clamp for a 4.5 inch probe card according to claim 1, wherein: the first base (1) and the second base (3) are connected with each other through an adjusting mechanism (2), connecting seats are arranged at two ends of the first base (1) and the second base (3), and two ends of the adjusting mechanism (2) are arranged on the connecting seats.
7. The twisting clamp for a 4.5 inch probe card according to claim 6, wherein: adjustment mechanism (2) are including adjusting swivel nut (16), adjusting screw (17) and dead lever (18), the one end of adjusting swivel nut (16) is passed through the bearing and is rotated and install on the connecting seat of first base (1) one end, the one end of dead lever (18) is fixed on the connecting seat of second base (3) one end, adjusting screw (17) integrated into one piece is at the other end of dead lever (18), and adjusting screw (17) close soon in the inside of adjusting swivel nut (16).
8. The twisting fixture of a 4.5 inch probe card according to claim 1, wherein: one side of first base (1) and second base (3) all is provided with guide post (19) and guide way (20), and passes through guide post (19) and guide way (20) sliding connection between first base (1) and second base (3).
9. The twisting clamp for a 4.5 inch probe card according to claim 8, wherein: spacing spout (21) have been seted up to one side of guide post (19), the opposite side tip of guide post (19) is provided with spacing slider (22), spacing slider (22) slidable mounting is in spacing spout (21).
10. The twisting clamp for a 4.5 inch probe card according to claim 9, wherein: the guide posts (19) and the guide grooves (20) are alternately arranged between the first base (1) and the second base (3), and the width of the guide posts (19) is the same as that of the guide grooves (20).