CN115290940A - 4.5" Probe Card Swivel Fixture - Google Patents

Abstract

The invention discloses a 4.5-inch probe card rubbing fixture, which includes a first base and an adjustment mechanism. The upper sides of the first base and the adjustment mechanism are both provided with a clamp base, and one side of the clamp base is provided with a sliding groove The inner side of the sliding groove is slidably connected with a clamping bar through a lifting mechanism, and the lifting mechanism includes a lifting screw installed in the fixture base through a bearing rotation, a lifting nut fixed on one side of the clamping strip, and a lower end of the lifting screw. The lifting nut is sleeved on the lifting screw, and the upper side of the clamp base is provided with a stop plate; the size of the probe card fixed and clamped according to the client probe station of the present invention is 4.5 inches wide Universal interface, the probe card clamping tool of the present invention can clamp the probe card made of 4.5-inch wide PCB, and only need to use the rolling wheel to realize the lifting and lowering of the pressure bar so as to clamp the probe card. The clamping and loosening of the PCB eliminates the need to screw the screwdriver and replace the screws regularly.

Description

4.5" Probe Card Rubbing Fixture

technical field

The invention belongs to the technical field of probe card production, and in particular relates to a 4.5-inch probe card rubbing fixture.

Background technique

The probe card fixture is a necessary tool for clamping the probe card during the production process and maintenance process of the probe card. Its main functions are: to clamp the probe card. After assembly, the probe card has protrusions on the upper and lower surfaces of the PCB. Out of the object (there are test head components on the lower surface of the PCB, signal connectors, electronic components, etc. on the upper surface of the PCB), when performing follow-up work on the probe card, a clamping tool is required, which will be clamped from the edge of the PCB, Let the protruding objects on the upper and lower surfaces be in a suspended state, so that the follow-up work will not be bumped or touched; correct the warpage of the PCB, and force the warped PCB to reduce the warpage value through the clamping force, and improve the probe card. The overall flatness improves the contact performance of the probe card.

The prior art has the following disadvantages:

1) In the probe card industry, the method of screwing is used to tighten or loosen the pressure strip to clamp and loosen the PCB of the probe card. In the process, a screwdriver must be used to tighten or loosen. The moving part is easy to wear, and the screws need to be replaced from time to time;

2), PCB is made of multi-layer FR4 (glass fiber epoxy resin) or polymid (polyamide), there will be different degrees of warpage, the quality of each PCB is different, and the overall warpage and flatness will be relatively large. There is a big difference. The fixture is used to clamp PCBs of various material numbers frequently. The conventional fixture is to tighten the screws to make the pressure generated by the bead. The pressure is mainly distributed around the screw in a dot shape, and the PCB is flattened to correct the warpage. has a small effect;

3) The clamping direction of the fixture used in the production of the probe card is that the needle tip is facing upward, the bead is in contact with the lower surface of the PCB, the lower surface of the PCB is under pressure, and the upper surface of the PCB is the resting surface. When the client uses the probe card, the needle tip is facing down, and the fastening bar is in contact with the upper surface of the PCB. The pressed surface is the upper surface of the PCB, and the static surface is the lower surface of the PCB. The suppression of warping is not the same as the actual use surface, and the effect is very different.

For this purpose, we propose a 4.5-inch probe card rubbing fixture.

Contents of the invention

The purpose of the present invention is to provide a 4.5-inch probe card rubbing jig to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a 4.5-inch probe card rubbing fixture, including a first base and an adjustment mechanism, the upper side of the first base and the adjustment mechanism are provided with a clamp base, the clamp One side of the base is provided with a sliding groove, and the inner side of the sliding groove is slidably connected with a clamping bar through a lifting mechanism. The lifting nut and the rotary wheel fixed on the lower end of the lifting screw, the lifting nut is sleeved on the lifting screw, the upper side of the clamp base is provided with a stop plate, and the position of one side of the stop plate is the same as the position of the clamping bar Correspondingly, a bead block is provided on the upper end of the clamping bar.

Preferably, the lower end of the clamp base is provided with a rotation groove corresponding to the position of the rotary wheel, and the outer side of the rotary wheel is located outside the clamp base.

Preferably, the cross-sectional shape of the clamping bar is L-shaped, the lifting nut is located at the lower end side of the clamping bar, and the bead block is located at the upper end surface of the clamping bar.

Preferably, the upper surface of the beading block matches the shape of both ends of the probe card, the lower side of the beading block is provided with a connecting board, and the upper side of the clamping bar is provided with a connecting slot, so Insert the connecting board into the connecting slot.

Preferably, the cross-sectional shape of the connecting plate is T-shaped, and the two ends of the connecting plate are rotatably connected to the limit turning blocks through the damping shaft, and the limit turning blocks are attached to the two ends of the clamping bar.

Preferably, the first base and the second base are connected to each other through an adjustment mechanism, the two ends of the first base and the second base are provided with connection seats, and the two ends of the adjustment mechanism are installed on the connection seats.

Preferably, the adjustment mechanism includes an adjustment screw sleeve, an adjustment screw rod and a fixed rod, one end of the adjustment screw sleeve is rotatably mounted on the connecting seat at one end of the first base through a bearing, and one end of the fixed rod is fixed on the second base On the connecting seat at one end, the adjusting screw is integrally formed on the other end of the fixed rod, and the adjusting screw is screwed into the inside of the adjusting screw sleeve.

Preferably, one side of the first base and the second base is provided with a guide column and a guide groove, and the first base and the second base are slidably connected through the guide column and the guide groove.

Preferably, a limiting chute is provided on one side of the guide column, and a limiting slider is provided at the other end of the guiding column, and the limiting slider is slidably installed in the limiting chute.

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

Compared with prior art, the beneficial effect of the present invention is:

1. According to the present invention, the size of the fixed clamping probe card of the client probe station is a universal interface with a width of 4.5 inches. Clamping, and when in use, only need to use the rubbing wheel to realize the lifting and lowering of the bead block to clamp and loosen the probe card PCB, eliminating the need to twist the screwdriver and replace the screws regularly.

2. The clamping force generated by the rising of the rubbing bead block in the present invention is strip-shaped, and the bead block is wide, and the surface area it touches has a distribution of clamping force, which can better correct the warpage of the PCB.

3. The pressure action surface of the clamp bead block of the present invention is consistent with the action surface on the PCB surface when the client uses the probe card, which is more suitable for actual use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the lifting and clamping structure of the present invention;

Fig. 3 is a schematic diagram of the connection structure of bead blocks of the present invention;

Fig. 4 is the schematic diagram of enlarged structure at A place in Fig. 1 of the present invention;

Fig. 5 is a schematic diagram of the base adjustment guide structure of the present invention;

In the figure: 1, the first base; 2, the adjustment mechanism; 3, the second base; 4, the fixture base; Lifting mechanism; 10, rotary wheel; 11, lifting screw; 12, lifting nut; 13, limit turn block; 14, connecting slot; 15, connecting plate; 16, adjusting screw sleeve; 17, adjusting screw; 18, Fixed rod; 19, guide column; 20, guide groove; 21, limit chute; 22, limit slider.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one:

Please refer to Fig. 1 to Fig. 5, the present invention provides a kind of technical scheme: 4.5 inches probe card rubbing jig, comprise first base 1 and adjustment mechanism 2, the upper side of first base 1 and adjustment mechanism 2 are all provided with Clamp base 4, one side of the clamp base 4 is provided with a slide groove 5, the inner side of the slide groove 5 is slidably connected with a clamping bar 6 through a lifting mechanism 9, and the lifting mechanism 9 includes a lifting screw 11 installed in the clamp base 4 through bearing rotation , the lifting nut 12 fixed on one side of the clamping bar 6 and the rotary wheel 10 fixed on the lower end of the lifting screw rod 11, the lifting nut 12 is sleeved on the lifting screw rod 11, the upper side of the clamp base 4 is provided with a stop plate 8, and The position of one side of the stop plate 8 corresponds to the position of the clamping bar 6, and the rotating wheel 10 is rotated by hand, thereby driving the lifting screw 11 to rotate, and the lifting screw 11 drives the lifting nut 12 and the clamping bar 6 to rise, so that the clamping The bar 6 drives the bead block 7 and the 4.5-inch probe card to press up on the stop plate 8, and the upper end of the clamping bar 6 is provided with a bead block 7, and the probe card PCB is conveniently clamped by the bead block 7. Hold, the lower end of the clamp base 4 is provided with a rotating groove corresponding to the position of the rotary wheel 10, and the outer side of the rotary wheel 10 is located at the outside of the clamp base 4, which is convenient for manually rubbing the rotary wheel 10; the cross-sectional shape of the clamping bar 6 is set to L shape , the lifting nut 12 is located at the lower end side of the clamping bar 6, and the clamping block 7 is located at the upper surface of the clamping bar 6, which facilitates the lifting and sliding of the clamping bar 6 to clamp the probe card PCB during use.

As can be seen from the above description, the present invention has the following beneficial effects: use the rubbing wheel 10 to rotate, thereby driving the lifting screw 11 to rotate, and the lifting screw 11 drives the lifting nut 12 and the clamping bar 6 to rise, so that the clamping bar 6 drives the bead block The 7-inch and 4.5-inch probe cards can be lifted up and down, so as to clamp and release the probe card PCB, eliminating the need to twist the screwdriver and replace the screws regularly.

In the present invention, the clamping force produced by the rising of the rubbing bead block is strip-shaped, and the bead block is wide, and the surface area it touches has a distribution of clamping force, which can better correct the warping of the PCB.

The pressure acting surface of the clamp bead block of the present invention is consistent with the acting surface on the PCB surface when the client uses the probe card, which is more suitable for actual use.

Embodiment two:

Please refer to Figures 1 to 5, on the basis of Embodiment 1, the present invention provides a technical solution: the upper surface of the bead block 7 matches the shape of both ends of the probe card, and the lower side of the bead block 7 A connection board 15 is provided, and the upper side of the clamping bar 6 is provided with a connection slot 14, and the connection board 15 is inserted into the connection slot 14. The ends are connected to the limit turning block 13 through the rotation of the damping shaft, and the limit turning block 13 is attached to the two ends of the clamping bar 6. , install the beading block 7 matching the corresponding shape on the clamping bar 6, only need to insert the connecting plate 15 into the connecting slot 14 during installation, and then unscrew the limit turn block 13 to fit on the clamping bar 6 Fixed at both ends.

With the above technical solution, insert the connecting board 15 into the connecting slot 14, and then unscrew the limit turning block 13 to attach to both ends of the clamping bar 6 for installation, so that the probe card can be installed according to the shape of both ends of the probe card PCB.

The first base 1 and the second base 3 are connected to each other through the adjustment mechanism 2, the two ends of the first base 1 and the second base 3 are provided with connection seats, the two ends of the adjustment mechanism 2 are installed on the connection seats, and the adjustment mechanism 2 Including adjusting screw sleeve 16, adjusting screw rod 17 and fixed rod 18, one end of adjusting screw sleeve 16 is installed on the connecting seat at one end of the first base 1 through bearing rotation, and one end of fixing rod 18 is fixed on the connecting seat at one end of the second base 3 On the other end of the fixed rod 18, the adjusting screw 17 is integrally formed, and the adjusting screw 17 is screwed into the inside of the adjusting screw sleeve 16, and the adjusting screw sleeve 16 is rotated so that the adjusting screw 17 at one end of the fixing rod 18 is inside the adjusting screw sleeve 16. Move, so that the adjusting screw sleeve 16 and the fixed rod 18 drive the first base 1 and the second base 3 to move the adjustment distance.

Using the above technical scheme, by rotating the adjusting screw sleeve 16 and cooperating with the adjusting screw rod 17 to adjust the distance between the adjusting screw sleeve 16 and the fixed rod 18, thereby driving the clamp base 4 of the first base 1 and the second base 3 to move and adjust the distance, which is convenient Clamping processing of probe card PCBs of different sizes.

Further, referring to FIG. 1 and FIG. 4 , one side of the first base 1 and the second base 3 is provided with a guide column 19 and a guide groove 20 , and the first base 1 and the second base 3 pass through the guide column 19 Slidingly connected with the guide groove 20, the first base 1 and the second base 3 can move stably through the guidance of the guide column 19 and the guide groove 20; The limit slider 22 is arranged at the top, and the limit slider 22 is slidably installed in the limit chute 21, and slides through the limit slider 22 and the limit chute 21, so that the sliding between the guide column 19 and the guide groove 20 is stable. , and limit the position; guide posts 19 and 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 the width of the guide grooves 20. When in use, the guide posts 19 and the guide The sliding between the grooves 20 is convenient and stable.

With the rapid development of the domestic integrated circuit industry, the entire chip industry will operate rapidly, and the probe card as an interface component between the chip and the testing machine is a must-have in the chip testing link; The production efficiency of pin cards is also to improve the operation efficiency of the chip industry. Improving efficiency at the company level and reducing production time and production costs is one of the company's energy efficiency improvements.

In the actual production process, there are about 300 probe cards per month using the 4.5-inch probe card rubbing fixture. In the production process (fixing, inspection, grinding, adjustment, QC, maintenance) of each probe card ), the average total use of the fixture is more than 30 times, each loading and unloading can save more than 1 minute of working time, which is equivalent to using the fixture of this invention for each probe card, which can save more than 0.5 hours of production time.

The working principle and application process of the present invention: according to the shape of both ends of the 4.5-inch probe card, install the corresponding bead block 7 on the clamping bar 6 during use, and only need to insert the connecting board 15 into the connecting plug when installing. In the slot 14, unscrew the limit turn block 13 and stick it on the two ends of the clamping bar 6 to install the beading block 7 on the upper end of the clamping bar 6, and then place the 4.5-inch probe card on the beading block 7 Up, rub the rotary wheel 10 by hand to rotate, thereby driving the lifting screw 11 to rotate, and the lifting screw 11 drives the lifting nut 12 and the clamping bar 6 to rise, so that the clamping bar 6 drives the bead block 7 and the 4.5-inch probe card The booster is fixed on the stopper plate 8, which is more convenient when clamping and installing, so as to facilitate the processing of 4.5-inch probe cards, and when clamping probe cards of other sizes, only need to turn the adjusting screw Set 16, make the adjustment screw 17 at one end of the fixed rod 18 move in the adjustment screw sleeve 16, so that the adjustment screw sleeve 16 and the fixed rod 18 drive the first base 1 and the second base 3 to move the adjustment distance, and cooperate with the limit chute 21 and the guide sliding of the limit slider 22, and cooperate with the guide column 19 and the guide groove 20 to make the sliding between the first base 1 and the second base 3 more stable.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. any such actual relationship or order exists between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above is only used to illustrate the technical solution of the present invention and not to limit it. Other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be considered as long as they do not depart from the spirit and scope of the technical solution of the present invention. fall within the scope of the claims of the present invention.

Claims (10)

1.4.5-inch probe card rubbing fixture is characterized in that: it includes a first base (1) and an adjustment mechanism (2), and the upper side of the first base (1) and the adjustment mechanism (2) are all provided with A clamp base (4), one side of the clamp base (4) is provided with a sliding groove (5), and the inner side of the sliding groove (5) is slidably connected with a clamping bar (6) through a lifting mechanism (9). The elevating mechanism (9) includes an elevating screw (11) installed in the fixture base (4) through bearing rotation, an elevating nut (12) fixed on one side of the clamping bar (6) and an elevating screw (11) fixed on the lower end of the elevating screw (11). The rotary wheel (10), the lifting nut (12) is sleeved on the lifting screw rod (11), the upper side of the clamp base (4) is provided with a stop plate (8), and the stop plate (8) The position of one side corresponds to the position of the clamping bar (6), and the upper end of the clamping bar (6) is provided with a bead block (7). 2. The 4.5-inch probe card rubbing fixture according to claim 1, characterized in that: the position of the lower end of the clamp base (4) corresponding to the rotary wheel (10) is provided with a rotating groove, and the rotary wheel (10) ) on the outside of the clamp base (4). 3. The 4.5-inch probe card rubbing fixture according to claim 1, characterized in that: the cross-sectional shape of the clamping bar (6) is set to an L shape, and the lifting nut (12) is located on the clamping bar On the side of the lower end of (6), the said bead block (7) is located on the upper surface of the clamping bar (6). 4. 4.5 inch probe card rubbing clamps according to claim 1, is characterized in that: the upper surface of described bead block (7) matches with probe card two ends shape, and described bead block ( The lower side of 7) is provided with a connection board (15), and the upper side of the clamping bar (6) is provided with a connection slot (14), and the connection board (15) is inserted into the connection slot (14) . 5. The 4.5-inch probe card rubbing fixture according to claim 4, characterized in that: the cross-sectional shape of the connecting board (15) is set to a T shape, and the two ends of the connecting board (15) The limit turning block (13) is connected with the rotation of the damping rotating shaft, and the limit turning block (13) is attached to the two ends of the clamping bar (6). 6. The 4.5-inch probe card rubbing fixture according to claim 1, characterized in that: the first base (1) and the second base (3) are connected to each other through an adjustment mechanism (2), so Both ends of the first base (1) and the second base (3) are provided with connection seats, and the two ends of the adjustment mechanism (2) are installed on the connection seats. 7. The 4.5-inch probe card rubbing fixture according to claim 6, characterized in that: the adjustment mechanism (2) comprises an adjustment screw sleeve (16), an adjustment screw rod (17) and a fixed rod (18), One end of the adjusting screw sleeve (16) is mounted on the connecting seat at one end of the first base (1) through bearing rotation, and one end of the fixed rod (18) is fixed on the connecting seat at one end of the second base (3), The adjusting screw (17) is integrally formed on the other end of the fixed rod (18), and the adjusting screw (17) is screwed into the inside of the adjusting screw sleeve (16). 8. The 4.5-inch probe card rubbing fixture according to claim 1, characterized in that: one side of the first base (1) and the second base (3) is provided with a guide column (19) and The guide groove (20), and the first base (1) and the second base (3) are slidably connected through the guide column (19) and the guide groove (20). 9. The 4.5-inch probe card rubbing fixture according to claim 8, characterized in that: one side of the guide column (19) is provided with a limit chute (21), and the guide column (19) A limit slide block (22) is arranged at the other end, and the limit slide block (22) is slidably installed in the limit slide groove (21). 10. The 4.5-inch probe card rubbing fixture according to claim 9, characterized in that: said guide columns (19) and guide grooves (20) are alternately arranged on the first base (1) and the second base ( 3), and the width of the guide column (19) is the same as the width of the guide groove (20).

Images