CN219401200U

CN219401200U - Jig for chip test

Info

Publication number: CN219401200U
Application number: CN202320867837.0U
Authority: CN
Inventors: 郭艳飞; 李金钵; 孟庆伟
Original assignee: Boxin Semiconductor Technology Tianjin Co ltd
Current assignee: Boxin Semiconductor Technology Tianjin Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-25
Anticipated expiration: 2033-04-18

Abstract

The utility model provides a chip testing jig which comprises a disc-shaped substrate, wherein a plurality of clamping structures are arranged at intervals on the outer edge of the substrate, and a rotating seat is arranged in the middle of the substrate; the clamping structure is U-shaped and comprises a cantilever, two chucks and clamping mechanisms, wherein one side of the center of the substrate extends outwards, and the two chucks are arranged on the outer sides of the cantilever; an accommodating groove is formed between the two chucks, an anti-falling base plate is arranged at the outer end of the cantilever corresponding to the accommodating groove, and a leveling mechanism is detachably arranged on the base plate. The fixture provided by the utility model can be used for clamping a plurality of chips at one time, can continuously supply the chips to be detected when being applied to a detection platform, is particularly suitable for an automatic production line, and can obviously improve the detection operation efficiency. During the use, through fixture and backing plate on the dress card structure, the chip that waits to detect is fixed to dress card that can be stable to when utilizing the manipulator to take away the chip, fixture can not prevent the chip to shift out from the holding tank.

Description

Jig for chip test

Technical Field

The utility model belongs to the technical field of chip production detection equipment, and particularly relates to a jig for chip test.

Background

The chip is a product integrated with a large number of microelectronic components on a substrate, the integration level is higher and higher, the product is developed towards miniaturization, and in order to realize that the production quality of the chip product meets the use requirement, the chip is usually required to be detected. Such as chip qualification tests, chip burn-in tests, chip performance reliability and stability tests, and the like. In the prior art, most of jigs matched with equipment for chip testing can only be used for installing one chip product, only one chip can be tested each time, after the current chip test is finished, the next chip is required to be installed, then the jigs reenter a test station and then test, the detection efficiency is affected, the operation is also relatively complex, and the automatic production requirement cannot be well met, so that improvement is necessary.

Disclosure of Invention

Therefore, the utility model aims to overcome the defects in the prior art and provides a jig for chip test.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a chip testing jig comprises a disc-shaped substrate, wherein a plurality of clamping structures are arranged at intervals on the outer edge of the substrate, and a rotating seat is arranged in the middle of the substrate;

the clamping structure is U-shaped and comprises a cantilever, two chucks and clamping mechanisms, wherein one side of the center of the substrate extends outwards, and the two chucks are arranged on the outer sides of the cantilever;

an accommodating groove is formed between the two chucks, an anti-falling base plate is arranged at the outer end of the cantilever corresponding to the accommodating groove, and a leveling mechanism is detachably arranged on the base plate.

Further, each clamping structure is uniformly distributed on the outer circumference of the base body by taking the center of the base body as the center.

Further, the base body and each clamping structure are integrally formed.

Further, 4-12 clamping structures are uniformly distributed on the outer side of the outer circumference of the matrix.

Further, the leveling mechanism comprises at least two adjusting screws which are screwed on the anti-falling base plate, the screw rods of the adjusting screws upwards penetrate through the anti-falling base plate, and the tail ends of the screw rods are provided with ball heads to prevent chips from being scratched and damaged.

Further, the inner side of the tail end of the chuck is provided with an installation groove, the clamping mechanism comprises a spring clamping piece arranged in the installation groove, and the spring clamping piece is provided with a clamping part which extends outwards from the installation groove in a normal state.

Further, the clamping part of the spring clamping piece is provided with an inclined clamping working surface, so that a clamping gap formed between the two spring clamping pieces of the clamping mechanism is narrowed from the bottom of the accommodating groove to the outer side of the accommodating groove.

Further, the width of the anti-falling backing plate is smaller than 1/4 of the depth of the accommodating groove.

Further, the inner sides of the two chucks are provided with inclined inner surfaces, so that the width of the accommodating groove from the bottom to the opening side is gradually increased.

Compared with the prior art, the utility model has the following advantages:

the fixture provided by the utility model can be used for clamping a plurality of chips at one time, can continuously supply the chips to be detected when being applied to a detection platform, is particularly suitable for an automatic production line, and can obviously improve the detection operation efficiency. During the use, through fixture and backing plate on the dress card structure, the chip that waits to detect is fixed to dress card that can be stable to when utilizing the manipulator to take away the chip, fixture can not prevent the chip to shift out from the holding tank.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute an undue limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of the structural portion of the inventive mounting card;

FIG. 3 is a top view of the portion of the inventive mounting card structure;

FIG. 4 is a schematic view of FIG. 2 with the leveling mechanism removed;

FIG. 5 is a schematic diagram of a portion of the inventive mounting structure for mounting a chip to be tested;

FIG. 6 is a schematic view of a collet portion of the present utility model;

FIG. 7 is a schematic view of a clamping mechanism employing a spring clip according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a clamping mechanism employing clamping blocks in accordance with an embodiment of the present utility model;

fig. 9 is a schematic diagram of the present utility model in an application state.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 9, the jig for chip test comprises a disc-shaped substrate 1, a plurality of card loading structures 2 are arranged at intervals on the outer edge of the substrate, and a rotating seat 3 is arranged in the middle of the substrate. It should be noted that the rotating seat may be a member mounted on the rotating seat, or may be a structure directly formed on the base body, so long as it is convenient to connect with the rotation driving member, so as to achieve the rotation driven by the rotation driving member. Generally, each clamping structure is uniformly distributed on the outer circumference of the base body by taking the center of the base body as the center, and the base body and each clamping structure are integrated into a whole. For example, 4-12 clamping structures are uniformly distributed on the outer side of the outer circumference of the matrix.

In general, the jig provided by the utility model can be arranged on the turntable, the jig is driven to rotate by the turntable, the chip on one card mounting structure is aligned to the detection station every time and can be detected, the detection operation is coherent, and the efficiency is high. As another example of application, the jig provided by the utility model can be installed on a rotary workbench 4 through a rotating seat, specifically, the jig loaded with the chip product to be detected is driven to rotate through the rotary workbench, after a card loading structure on a substrate is aligned with a detection station of the detection device, the rotary workbench stops acting, at the moment, the chip product on the card loading structure is taken down by a manipulator and placed at the detection station for detection, (if the chip product is qualified, the chip product is conveyed to a qualified product area by a conveying device on the detection device, and the unqualified product is removed by an unqualified product removing device on the detection device), after detection is completed, the substrate rotates, so that the chip to be detected is aligned with the detection station by the next card loading structure, and the chip to be detected can be supplied to the detection device by using the jig for facilitating automatic operation.

The clamping structure is U-shaped integrally and comprises a cantilever 5 extending outwards from one side of the center of the base body and two chucks 6 at the outer sides of the cantilever, wherein the inner sides of the two chucks are respectively provided with a clamping mechanism 7. The clamping mechanism can retract into the mounting groove of the clamping head after being stressed, so that the chip can be conveniently clamped in from the outer side of the containing groove, and the chip is generally lighter in weight, and can be fixed by the smaller clamping force of the clamping mechanism. An accommodating groove 8 is formed between the two chucks, an anti-falling base plate 9 is arranged at the outer end of the cantilever corresponding to the accommodating groove, and a leveling mechanism is detachably arranged on the base plate. Typically, the width of the anti-drop pad is less than 1/4 of the depth of the accommodating groove.

When the chip 18 to be detected is placed in the accommodating groove, the clamping mechanisms on the clamping heads at two sides clamp the chip, one side of the chip, which is far away from the clamping mechanisms, is supported by the base plate to prevent the chip from tilting (falling off), the clamping mechanisms and the base plate on the clamping structures effectively ensure the stability of the chip, and the clamping mechanisms can not prevent the chip from moving when the chip is taken away (pulled out outwards) by the mechanical arm, namely, the designed clamping mechanisms can keep the chip stable and can not prevent the chip from taking and placing.

In order to ensure that the chip is in a horizontal state in a clamping and fixing state to the greatest extent, in an alternative embodiment, the leveling mechanism comprises at least two adjusting screws 10 which are screwed and installed on the anti-falling base plate, the screw rods of the adjusting screws upwards penetrate through the anti-falling base plate, the ball head parts are arranged at the tail ends of the screw rods, the clamping mechanism and the anti-falling base plate can be ensured to keep the chip in an approximately horizontal state only by properly adjusting the heights of the adjusting screws, the chip clamping state is more stable, the position error is smaller when the chip is taken, meanwhile, the design of the ball head parts at the tail ends of the screw rods is smooth, the edge of the chip is smooth in practice under normal conditions, the friction force between the ball head parts of the adjusting screws is very small, and the chip can be prevented from being scratched and damaged. Of course, under the working condition that the leveling mechanism is not needed, the adjusting screw can be detached, the operation is very convenient, the flexibility is high, and the universality is good.

The inside of the chuck end is provided with a mounting groove 11. In an alternative embodiment, as shown in fig. 7, the clamping mechanism comprises a spring clip 12 mounted in the mounting groove, and the spring clip is normally designed with a clamping portion extending outwards from the mounting groove. In a further improved scheme, the clamping part of the spring clamping piece is provided with an inclined clamping working surface 13, so that a clamping gap formed between the two spring clamping pieces of the clamping mechanism is narrowed from the bottom of the accommodating groove to the outer side of the accommodating groove. In addition, an inclined or arc-shaped guiding surface 19 can be arranged at one end of the clamping part facing the outer side of the accommodating groove, so that the chip can be conveniently clamped.

In yet another alternative embodiment, as shown in fig. 8, the clamping mechanism includes a clamping block 14, one end of the clamping block is hinged to the side wall of the mounting groove, the other end of the clamping block is elastically supported by an elastic member 15, an inclined clamping working surface 20 and a guiding working surface 21 are provided on the surface of the outer side wall of the clamping block, and the clamping working surface applies a clamping force to the chip, as in the scheme principle of the spring clamping piece, and the guiding working surface is very convenient for clamping the chip. In a further preferred embodiment, the clamping groove 16 can be machined in the clamping block, and limiting of the chip in the vertical direction can be achieved. It should be noted that, even in the scheme of adopting the spring clamping piece, the structure which is the same as the clamping groove can be processed (such as punched) on the side wall of the spring clamping piece, so that the chip is limited, and the stability of the chip during clamping and fixing is improved to the greatest extent.

The inner sides of the two chucks are provided with inclined inner surfaces 17, so that the width of the accommodating groove from the bottom to the opening side is gradually increased, and the accommodating groove has larger movable space in the process of loading or unloading chips, and interference or collision is avoided.

The utility model has reasonable structural design, can continuously supply the chips to be detected when being applied to the detection platform when a plurality of chips are clamped on the jig at one time, is particularly suitable for an automatic production line, and can obviously improve the detection operation efficiency. During the use, through fixture and backing plate on the dress card structure, the chip that waits to detect is fixed to dress card that can be stable to when utilizing the manipulator to take away the chip, fixture can not prevent the chip to shift out from the holding tank.

The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A tool for chip test, its characterized in that: comprises a disc-shaped basal body, a plurality of clamping structures are arranged at intervals on the outer edge of the basal body, and a rotating seat is arranged in the middle of the basal body;

2. The fixture for chip testing according to claim 1, wherein: each clamping structure is uniformly distributed on the outer circumference of the base body by taking the center of the base body as the center.

3. The fixture for chip testing according to claim 2, wherein: the matrix and each clamping structure are integrated into one piece.

4. The fixture for chip testing according to claim 2, wherein: 4-12 clamping structures are uniformly distributed on the outer side of the outer circumference of the matrix.

5. The fixture for chip testing according to claim 1, wherein: the leveling mechanism comprises at least two adjusting screws which are screwed on the anti-falling base plate, the screw rods of the adjusting screws upwards penetrate through the anti-falling base plate, and the tail ends of the screw rods are provided with ball heads.

6. The fixture for chip testing according to claim 1, wherein: the inner side of the tail end of the chuck is provided with an installation groove, the clamping mechanism comprises a spring clamping piece arranged in the installation groove, and the spring clamping piece is provided with a clamping part which extends outwards from the installation groove in a normal state.

7. The fixture for chip testing as defined in claim 6, wherein: the clamping part of the spring clamping piece is provided with an inclined clamping working surface, so that a clamping gap formed between the two spring clamping pieces of the clamping mechanism is narrowed from the bottom of the accommodating groove to the outer side of the accommodating groove.

8. The fixture for chip testing according to claim 1, wherein: the width of the anti-falling backing plate is smaller than 1/4 of the depth of the accommodating groove.

9. The fixture for chip testing according to claim 1, wherein: the inner sides of the two chucks are provided with inclined inner surfaces, so that the width of the accommodating groove from the bottom to the opening side is gradually increased.