CN117589674B - Clamp for chip test - Google Patents

Abstract

The invention relates to the technical field of clamps for chip testing, and particularly discloses a clamp for chip testing, which comprises a supporting rod, a first arc ring rotationally connected with the supporting rod, a second arc ring rotationally connected with the first arc ring, a groove formed at the end part of the first arc ring, and a lug which is arranged at the end part of the second arc ring, can penetrate through the groove and can be fixed with the groove, wherein the front side and the back side of the first arc ring and the front side and the back side of the second arc ring are detachably connected with lenses for amplifying objects, and a plurality of test holes are formed in the lenses; the first arc ring is provided with a first connecting rod coaxially connected with the supporting rod, the second arc ring is fixedly connected with a second connecting rod, and opposite ends of the first connecting rod and the second connecting rod are respectively fixedly connected with a clamping piece for clamping the edge end face of the chip in a rotating manner; the device solves the problems that the traditional chip clamping size is less and the clamping position is not damaged to the chip.

Description

A chip testing fixture

Technical Field

The present application relates to the technical field of chip testing fixtures, and specifically discloses a chip testing fixture.

Background Art

When producing chips, in order to achieve efficient chip production, the chips need to be fixed in a fixture for testing;

At present, most improvements to these fixtures are that one chip fixture can only adapt to one type of chip. When the manufacturer has multiple chips to produce, multiple sets of fixtures are needed to improve the scope of application of the fixture.

There is nothing wrong with this improvement in essence, but it has not been put into practice. With the iteration of technology, chips not only need front-side testing, but also back-side testing, because many chips have items that need to be tested on both sides.

Since both the front and back sides of the chip need to be tested, the traditional resizable fixture is no longer applicable. Due to its own fixture defects, the traditional resizable fixture can only test a single side. In addition, the current resizable fixtures can either change the size or test multiple sides, which are not compatible. In addition, the current resizable fixtures have technical deficiencies in clamping the chip:

Nowadays, the clamp generally clamps the edge of the chip to fix the chip. This mode was feasible in the past, but now it cannot be realized in some cases. Today's chips not only pursue high computing power, but also small manufacturing, so it is necessary to set up the most reasonable circuit diagram in an extremely limited area. Therefore, the edge of the chip clamped by the clamp in the past can easily damage the circuit design of the chip, thereby causing damage to the chip. Therefore, based on the above defects, the inventor proposes a chip testing fixture.

Summary of the invention

The purpose of the present invention is to solve the problem that the conventional chip clamping size is small and the clamping position is incorrect, resulting in chip damage.

In order to achieve the above object, the present invention provides the following basic scheme:

A chip testing fixture comprises a support rod, a first arc ring rotatably connected to the support rod, a second arc ring rotatably connected to the first arc ring, a groove opened at the end of the first arc ring, and a protrusion arranged at the end of the second arc ring and capable of passing through the groove and being fixed to the groove, wherein the first arc ring and the second arc ring are detachably connected to the front and back surfaces thereof with lenses for magnifying an object, and the lenses are provided with a plurality of test holes;

The first arc ring is provided with a first connecting rod coaxially connected to the support rod, the second arc ring is fixedly connected to a second connecting rod, and the first connecting rod and the second connecting rod are respectively fixedly connected and rotatably connected to a clamping member for clamping the edge end surface of the chip at one end facing each other;

The clamping member includes a fixing block, a fixing groove opened on the fixing block, an extrusion component arranged at the bottom of the fixing groove, a sponge arranged on two inner side walls of the fixing groove, and a protruding component connected to the extrusion component, wherein the protruding component passes through two sides of the fixing block and contacts the edge of the chip.

The principles and effects of this basic solution are:

1. Compared with the prior art, the device has a simple structure and an ingenious design. The device has significant advantages in appearance testing. The front and back sides of the first arc ring and the second arc ring are detachably connected with lenses for magnifying objects, which can directly magnify the chip, facilitate better and easier observation of the appearance of the chip, and quickly discover defects in the appearance.

2. Compared with the prior art, the device can realize both size change and testing of both sides, realizing an organic combination of size change and testing of both sides. The two functions of size change and testing of both sides do not interfere with each other.

3. Compared with the prior art, the present device solves the problem of the smaller size of the traditional chip clamping. The first arc circle is provided with a first connecting rod coaxially connected to the support rod, and the second arc circle is fixedly connected to the second connecting rod. The first connecting rod and the second connecting rod are respectively fixedly connected and rotatably connected at the opposite ends thereof with clamping members for clamping the edge end faces of the chip. The distance between the two clamping members is changed by moving the first arc circle and the second arc circle toward each other, and the clamping of chips of various sizes is achieved by changing the distance between the two clamping members.

4. Compared with the prior art, the present device solves the problem of chip damage caused by incorrect clamping position. The clamping member includes a fixed block, a fixed groove opened on the fixed block, an extrusion assembly arranged at the bottom of the fixed groove, a sponge arranged on the two inner walls of the fixed groove, and a protruding assembly connected to the extrusion assembly. The protruding assembly passes through both sides of the fixed block and contacts with the edge of the chip. The gravity of the chip itself is used to start the protruding assembly, and then the protruding assembly is used to wrap the edge of the chip and contact the edge of the chip without directly contacting the front and back sides of the chip. Since two clamping members are provided, the two clamping members cooperate with each other to achieve the contact of the protruding assembly with the edge of the chip, thereby solving the problem of chip damage caused by incorrect clamping position.

Furthermore, a threaded screw is provided at the connection between the groove and the protrusion.

Furthermore, a rotating bearing is provided at the connection between the support rod and the first arc circle, an extension portion is provided at the upper end of the support rod, the extension portion passes through the first arc circle and is coaxially connected to the first connecting rod, and one end of the support rod away from the first connecting rod is fixedly connected to a support seat, the free end of the support seat is fixedly connected to a rubber pad and the size of the support seat is larger than that of the support rod.

Furthermore, a rotating shaft is provided at one end of the first arc circle away from the groove, and the rotating shaft includes a fixed end and a rotating end, the first arc circle is installed on the fixed end, and the second arc circle is installed on the rotating end, and the maximum outward rotation angle of the second arc circle is when the first arc circle and the second arc circle are kept flush.

Furthermore, magnet sheets are fixedly connected to the front and back end surfaces of the first arc loop and the second arc loop, and the lens is magnetically connected to the magnet sheet, and the lens is a magnifying glass.

Furthermore, the extrusion assembly has a cavity opened inside the fixed block, a plurality of springs and a plurality of extrusion blocks installed in the cavity, and one end of the spring passes through the fixed block and the extrusion block.

Furthermore, the extending component includes an elastic airbag arranged inside the cavity and a protective column connected to the elastic airbag. Through holes are opened on both sides of the fixing groove, and the protective column can pass through the through holes vertically. The elastic airbag is fixedly connected to the other end of the spring, and the protective column can protect the edge surface of the chip.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

FIG1 shows a schematic structural diagram of a chip testing fixture proposed in an embodiment of the present application;

FIG2 is a top view flowchart of a fixing block in a chip testing fixture proposed in an embodiment of the present application;

FIG3 shows a schematic diagram of the installation of an elastic airbag in a chip testing fixture according to an embodiment of the present application.

DETAILED DESCRIPTION

In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

The figure marks in the drawings of the specification include: support rod 1, first connecting rod 2, support rod 3, first lens 4, second lens 5, test hole 6, second connecting rod 7, first clamping member 8, second clamping member 9, rotating block 10, protrusion 11, groove 12, first arc circle 13, second arc circle 14, rotating shaft 15, fixing groove 16, extrusion block 17, protective column 18, spring 19, elastic airbag 20.

The embodiments are shown in Figures 1, 2 and 3:

A chip testing fixture comprises a support rod 1, a first arc ring 13 rotatably connected to the support rod 1, a second arc ring 14 rotatably connected to the first arc ring 13, a groove 12 opened at the end of the first arc ring 13, and a protrusion 11 arranged at the end of the second arc ring 14 and capable of passing through the groove 12 and being fixed to the groove 12, and lenses for magnifying objects are detachably connected to the front and back surfaces of the first arc ring 13 and the second arc ring 14, and a plurality of test holes 6 are opened on the lenses;

Specific:

As shown in Figure 1, a rotating shaft 15 is provided at the connection between the support rod 1 and the first arc circle 13, and an extension portion is provided at the upper end of the support rod 1. The extension portion passes through the first arc circle 13 and is coaxially connected to the first connecting rod 2. The end of the support rod 1 away from the first connecting rod 2 is fixedly connected to a support seat, and the free end of the support seat is fixedly connected to a rubber pad and the size of the support seat is larger than that of the support rod 1.

A rotating shaft 15 is provided at the right end of the first arc circle 13 away from the groove 12. The rotating shaft 15 includes a fixed end and a rotating end. The first arc circle 13 is installed on the fixed end, and the second arc circle 14 is installed on the rotating end. The maximum outward rotation angle of the second arc circle 14 is when the first arc circle 13 and the second arc circle 14 are kept flush.

Regarding the lens: the front and back end faces of the first arc circle 13 and the second arc circle 14 are fixed with magnet sheets, and the lens is magnetically connected to the magnet sheet. The lens is a magnifying glass. Specifically: the lens installed on the first arc circle 13 is the first lens 4, and the lens installed on the second arc circle 14 is the second lens 5. As shown in Figure 1, a threaded screw is provided at the connection between the groove 12 and the protrusion 11.

The first arc ring 13 is provided with a first connecting rod 2 coaxially connected to the support rod 1, the second arc ring 14 is fixedly connected to a second connecting rod 7, and the first connecting rod 2 and the second connecting rod 7 facing each other are respectively fixedly connected and rotatably connected with a clamping member for clamping the edge end surface of the chip;

Specifically: the clamping member is divided into a first clamping member 8 and a second clamping member 9 according to the installation position. The first clamping member 8 is installed on the first arc circle 13, and the second clamping member 9 is installed on the second arc circle 14. Regarding the rotation between the second connecting rod 7 and the second clamping member 9: a rotating block 10 is provided between the second connecting rod 7 and the second clamping member 9, and the rotation of the second clamping member 9 relative to the second connecting rod 7 is realized by the rotating block 10.

The clamping member includes a fixing block, a fixing groove 16 opened on the fixing block, an extrusion component arranged at the bottom of the fixing groove 16, a sponge arranged on the two inner walls of the fixing groove 16, and a protruding component connected to the extrusion component, which passes through both sides of the fixing block and contacts the edge of the chip.

Specifically: the extrusion component is opened in the cavity inside the fixed block, and a plurality of springs 19 and a plurality of extrusion blocks 17 are installed in the cavity. The upper end of the spring 19 passes through the fixed block and the extrusion block 17. The extending component includes an elastic airbag 20 arranged in the cavity and a protective column 18 connected to the elastic airbag 20. Through holes are opened on both sides of the fixed groove 16, and the protective column 18 can pass vertically through the through holes. The elastic airbag 20 is fixedly connected to the lower end of the spring 19, and the protective column 18 can protect the edge surface of the chip.

Specific implementation process:

The first step is to rotate the second arc ring 14 so that the second arc ring 14 rotates rightward and keeps flush with the first arc ring 13 and then stops. At this time, the clamping piece on the first arc ring 13 is exposed, and the chip to be tested is taken out and vertically placed into the fixing groove 16. The two sides of the chip are in contact with the sponge, and the sponge is used to provide basic protection for the chip. Then, the bottom of the chip and the extrusion block 17 compress the spring 19. After the spring 19 is compressed, the elastic airbag 20 is compressed, and the gas enters the protection column 18. The protection column 18 vertically passes through the through hole to protect the edge surfaces of both ends of the chip;

Step 2: Use one hand to keep pressing the chip to keep the protective column 18 in place, and use the other hand to rotate the rotating shaft 15 so that the second arc 14 rotates to the left, and then the groove 12 begins to cooperate with the protrusion 11. At this time, the positions of the two clamps need to be observed;

The third step is to set the clamping member in the second arc circle 14 to be connected in rotation. Regardless of the size of the chip, the left end of the clamping member in the second arc circle 14 contacts the chip first, and then the left end of the clamping member in the second arc circle 14 stops. Since the clamping member in the second arc circle 14 is in a rotating state, when the force is continued, the left end of the clamping member in the second arc circle 14 moves upward and the right end moves downward, so that the clamping member in the second arc circle 14 is flush, and then the two clamping members are flush. At this time, the connecting screws can be used to fix the position of the groove 12 and the protrusion 11 at this time, so as to fix the position of the second arc circle 14 and the first arc circle 13;

In the fourth step, both clamping members will generate clamping force on the chip, and the clamping force enables the respective protection columns 18 to vertically pass through the through holes, thereby protecting the edge surface of the chip.

The fifth step is to start the test, install the lens through the magnet sheet, and test the appearance of the chip through the magnification effect of the lens. At this time, the first arc ring 13 can also be rotated to achieve the exchange of the front and back sides of the chip, and then the front and back sides of the chip can be tested for appearance;

Step 6, as shown in FIG1 , a test hole 6 is installed on the lens. After the test tool is inserted through the lens and connected to the chip through the test hole 6, the function of the chip can be tested;

After the test is completed and everything is qualified, remove the connecting screws, open the first arc ring 13, and take out the chip.

The device solves the problem that the traditional chip clamping size is small and the clamping position is incorrect, resulting in chip damage.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims (3)

1. A chip testing fixture, characterized in that it comprises a support rod, a first arc ring rotatably connected to the support rod, a second arc ring rotatably connected to the first arc ring, a groove opened at the end of the first arc ring, and a protrusion arranged at the end of the second arc ring and passing through the groove and fixed to the groove, the first arc ring and the second arc ring are detachably connected to the front and back sides of the lens for magnifying the object, and the lens is provided with a plurality of test holes; The first arc ring is provided with a first connecting rod coaxially connected to the support rod, the second arc ring is fixedly connected to the second connecting rod, and the first connecting rod and the second connecting rod are respectively fixedly connected and rotatably connected to clamping members for clamping the edge end surface of the chip at the ends facing each other. The first arc ring and the second arc ring move toward each other to change the distance between the two clamping members, and the clamping of chips of various sizes is achieved by changing the distance between the two clamping members; The clamping member includes a fixing block, a fixing groove opened on the fixing block, a squeezing assembly arranged at the bottom of the fixing groove, a sponge arranged on two inner side walls of the fixing groove, and a protruding assembly connected to the squeezing assembly, wherein the protruding assembly passes through two sides of the fixing block and contacts the edge of the chip; The extrusion assembly comprises a cavity opened inside the fixed block, a plurality of springs and a plurality of extrusion blocks installed in the cavity, and one end of the spring passes through the fixed block and the extrusion block; The extension assembly includes an elastic airbag arranged inside the cavity and a protective column connected to the elastic airbag, through holes are opened on both sides of the fixing groove, the protective column vertically passes through the through holes, the elastic airbag is fixedly connected to the other end of the spring, and the protective column protects the edge surface of the chip; A rotating shaft is provided at one end of the first arc circle away from the groove, the rotating shaft includes a fixed end and a rotating end, the first arc circle is mounted on the fixed end, the second arc circle is mounted on the rotating end, and the maximum outward rotation angle of the second arc circle is when the first arc circle and the second arc circle are kept flush; The second arc circle is rotated to the right and kept flush with the first arc circle and then stopped. At this time, the clamping piece on the first arc circle is exposed. The chip to be tested is placed vertically into the fixing groove. The two sides of the chip are in contact with the sponge. Then the bottom of the chip and the extrusion block compress the spring. After the spring is compressed, the elastic airbag is compressed, and the gas enters the protective column. The protective column vertically passes through the through hole to protect the edge surfaces at both ends of the chip. Keep pressing the chip to hold the protective column in place, and at the same time rotate the shaft so that the second arc turns to the left, and the groove begins to engage with the bump; For the clamping member located in the second arc circle, it is set to a rotating connection. No matter the size of the chip, the left end of the clamping member in the second arc circle contacts the chip first, and then the left end of the clamping member in the second arc circle stops. Since the clamping member in the second arc circle is in a rotating state, when force continues to be applied, the left end of the clamping member in the second arc circle moves upward and the right end moves downward, so that the clamping member in the second arc circle is flush, and then the two clamping members are flush. At this time, the connecting screws can be used to fix the position of the groove and the protrusion at this time, so as to fix the position of the second arc circle with the first arc circle. 2. A chip testing fixture according to claim 1, characterized in that: a rotating bearing is provided at the connection between the support rod and the first arc ring, an extension portion is provided at the upper end of the support rod, the extension portion passes through the first arc ring and is coaxially connected to the first connecting rod, the end of the support rod away from the first connecting rod is fixedly connected to a support seat, the free end of the support seat is fixedly connected to a rubber pad and the size of the support seat is larger than the size of the support rod. 3. A chip testing fixture according to claim 1, characterized in that: the front and back end surfaces of the first arc loop and the second arc loop are fixedly connected with magnet sheets, the lens is magnetically connected to the magnet sheet, and the lens is a magnifying glass.