Disassembling tool for dial assembly

Abstract

The utility model provides a dismounting tool for a dial assembly, and relates to the technical field of wafer testing. The disassembling tool comprises a base assembly and a plurality of ejector block assemblies, the base assembly is located on the side, away from the PCB, of the dial assembly, the base assembly comprises a bottom support used for supporting the dial assembly, the bottom support is provided with a plurality of matching parts, and each matching part is connected with one connecting part. The plurality of top block assemblies are respectively mounted on the peripheral side of the base assembly, each top block assembly comprises a top block arranged along the axial direction of the bottom support, and the top of the top block is higher than the top of the bottom support, so that the top block abuts against the PCB when the bottom support is connected with the needle disc assembly, and the needle disc assembly is separated from the PCB after the needle disc assembly and the PCB are detached. According to the technical scheme, the dismounting tool is arranged to dismount the dial assembly, a clamp does not need to be manually moved up and down, and replacement of the dial assembly can be easily completed.

Description

Technical Field

[0001] This utility model relates to the field of wafer testing technology, and in particular to a disassembly fixture for a pin tray assembly. Background Technology

[0002] Normally, when changing the test probes used to test the wafer, you need to first loosen the fastening screws of the fixture, then remove the fixture from the test equipment, then disassemble the fixture body, then replace the probe plate or test probe, then reassemble the complete fixture and put it back into the test equipment, and finally level and fix the fixture.

[0003] The current clamp is relatively large and heavy, weighing between 20kg and 30kg, and its center of gravity is biased towards the front. It cannot be disassembled by a single person. When moving it up or down, the clamp is prone to collisions due to the forward center of gravity. The needle plate is made of ceramic, which is at risk of cracking during collisions, and the probes will also be damaged. Utility Model Content

[0004] One objective of this invention is to provide a disassembly fixture for a needle plate assembly, thereby solving the technical problem that the process of replacing probes in the prior art is cumbersome and easily damages the probes.

[0005] A further objective of this invention is to avoid damaging the PCB board connected to the probe.

[0006] Specifically, this utility model provides a disassembly fixture for a needle plate assembly, the needle plate assembly being connected to one side of a PCB board and having multiple connecting parts. The disassembly fixture includes:

[0007] A base assembly is located on the side of the needle plate assembly opposite to the PCB board. The base assembly includes a base support for supporting the needle plate assembly. The base support has multiple mating parts, each of which is connected to a connecting part.

[0008] Multiple top block assemblies are respectively installed on the periphery of the base assembly. Each top block assembly includes a top block arranged along the axial direction of the base support. The top of the top block is higher than the top of the base support so as to abut against the PCB board when the base support is connected to the pin plate assembly, and to separate the pin plate assembly from the PCB board after the pin plate assembly is disassembled from the PCB board.

[0009] Optionally, the base is circular, and the plurality of mating parts are evenly arranged along the sides of the base.

[0010] Optionally, the probe plate assembly includes a probe plate and an annular probe plate fastener, the probe plate fastener being mounted on the outer periphery of the probe plate;

[0011] The top of the base is grooved and has a raised annular abutment portion, which abuts against the pin plate fastener and is provided with the mating portion.

[0012] Optionally, the pin plate fastener is provided with mounting holes for connection with the PCB board, so as to connect with the PCB board by passing a pin through the mounting holes;

[0013] The base is also provided with a plurality of removal holes, each of which corresponds to one of the mounting holes, so that the removal tool can remove the pin from the mounting hole of the pin plate fastener through the removal hole.

[0014] Optionally, each of the top block components further includes:

[0015] A connector extends radially along the base, the connector being connected to the outer peripheral wall of the base and to the corresponding top block.

[0016] Optionally, a plurality of the top block assemblies are evenly arranged along the periphery of the base.

[0017] Optionally, the top block is made of Teflon material.

[0018] Optionally, the base assembly further includes:

[0019] Multiple support columns are arranged vertically below the base and connected to the base to support the base.

[0020] Optionally, the base assembly further includes:

[0021] A handle is located below the base and is connected to the base.

[0022] Optionally, the handle is located at the center of the base, and a plurality of the support columns are evenly arranged around the handle.

[0023] The disassembly fixture of this invention includes a base assembly and multiple top block assemblies. The base assembly is located on the side of the needle plate assembly facing away from the PCB board. The base assembly includes a base support for supporting the needle plate assembly, and the base support has multiple mating parts, each of which is connected to a connecting part. Multiple top block assemblies are respectively installed on the periphery of the base assembly. Each top block assembly includes a top block arranged axially along the base support, with the top of the top block higher than the top of the base support, so as to abut against the PCB board when the base support is connected to the needle plate assembly, and to separate the needle plate assembly from the PCB board after disassembly. This technical solution, by setting up a disassembly fixture, disassembles the needle plate assembly without requiring manual lifting and lowering of the clamps, allowing for easy replacement of the needle plate assembly.

[0024] Furthermore, the top block in this invention is made of Teflon material, and the top block is in soft contact with the PCB board, which can ensure the stability of the connection between the disassembly tooling and the pin plate assembly, and also ensure that the PCB board is free from scratches and cosmetic damage.

[0025] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0026] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 This is a schematic structural diagram of a disassembly fixture for a needle plate assembly according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic exploded view of a PCB board, a pin tray assembly, and a disassembly fixture according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic structural diagram of a PCB board, pin tray assembly, and disassembly fixture from one angle according to an embodiment of the present invention.

[0030] Figure 4 This is a schematic structural diagram of a PCB board, pin tray assembly, and disassembly fixture from another angle according to one embodiment of the present invention;

[0031] Figure 5 This is a schematic structural diagram of the bottom of the disassembly tool according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic structural diagram of a PCB board and pin tray assembly according to an embodiment of the present invention.

[0033] Figure label:

[0034] 100-Disassembly fixture, 200-Pin disc assembly, 210-Probe disc, 220-Pin disc fastener, 221-Mounting hole, 222-Connector, 300-PCB board, 10-Base assembly, 20-Top block assembly, 11-Base support, 12-Support column, 13-Handle, 111-Annular abutment, 112-Positioning column, 113-Matching part, 114-Removal hole, 21-Top block, 22-Connector, 23-Fixing block. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0038] Unless otherwise expressly specified and limited, the terms "connection," "installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Unless otherwise specified, all terms (including technical and scientific terms) used in the description of this embodiment have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0040] Figure 1 This is a schematic structural diagram of a disassembly fixture 100 for a needle plate assembly 200 according to an embodiment of the present invention. Figure 2 This is a schematic exploded view of a PCB board 300, a pin tray assembly 200, and a disassembly fixture 100 according to an embodiment of the present invention. Figure 3 This is a schematic structural diagram of the PCB board 300, pin tray assembly 200, and disassembly fixture 100 from one angle according to an embodiment of the present invention. Figure 4 This is a schematic structural diagram of the PCB board 300, pin tray assembly 200, and disassembly fixture 100 from another angle according to one embodiment of the present invention. Figure 5 This is a schematic structural diagram of the bottom of the disassembly fixture 100 according to an embodiment of the present invention. Figure 6 This is a schematic structural diagram of a PCB board 300 and a pin tray assembly 200 according to an embodiment of the present invention. Figures 1 to 6 As shown, in a preferred embodiment, the needle plate assembly 200 is connected to one side of the PCB board 300 and has multiple connecting portions 222. The disassembly fixture 100 for the needle plate assembly 200 includes a base assembly 10 and multiple top block assemblies 20. The base assembly 10 is located on the side of the needle plate assembly 200 opposite to the PCB board 300. The base assembly 10 includes a base support 11 for supporting the needle plate assembly 200. The base support 11 has multiple mating portions 113, each of which is connected to a connecting portion 222. The multiple top block assemblies 20 are respectively installed on the periphery of the base assembly 10. Each top block assembly 20 includes a top block 21 arranged axially along the base support 11. The top of the top block 21 is higher than the top of the base support 11 so as to abut against the PCB board 300 when the base support 11 is connected to the needle plate assembly 200, and to separate the needle plate assembly 200 from the PCB board 300 after disassembly.

[0041] When disassembling the needle plate assembly 200, first abut the base 11 of the disassembly fixture 100 against the needle plate assembly 200, then connect the base 11 to the needle plate assembly 200, and then loosen the pin connecting the needle plate assembly 200 to the PCB board 300. The pin and the PCB are slightly tight. Since the top block 21 is higher than the top of the base 11, when tightening the base 11 and the needle plate assembly 200, the top block 21 will act like a set screw, thereby separating the needle plate assembly 200 from the PCB board 300 and completing the disassembly of the needle plate assembly 200.

[0042] In this embodiment, a disassembly fixture 100 is set up to disassemble the needle plate assembly 200. The needle plate assembly 200 can be easily replaced without the need for manual lifting and lowering of the fixture.

[0043] In some embodiments, both the connecting portion 222 and the mating portion 113 are in the form of holes, namely mounting holes 221. In other embodiments, the connecting portion 222 and the mating portion 113 may also adopt other structures, such as a hook and a buckle connection method.

[0044] In some embodiments, the base 11 is circular, and a plurality of mating parts 113 are evenly arranged along the sides of the base 11. Here, since the needle plate assembly 200 is circular, this embodiment also sets the base 11 to be circular, so that it can be better adapted to the needle plate assembly 200. In a preferred embodiment, the size of the base 11 is the same as the size of the needle plate assembly 200. In other embodiments, the size relationship between the base 11 and the needle plate assembly 200 can also be designed according to specific design requirements. In addition, the shape of the base 11 can also be determined according to specific design requirements.

[0045] In some embodiments, the probe tray assembly 200 includes a probe tray 210 and an annular probe tray fastener 220, which is mounted on the outer periphery of the probe tray 210. The top of the base 11 is recessed and has a raised annular abutment portion 111, which abuts against the probe tray fastener 220 and has a mating portion 113 thereon. It can be understood that in this embodiment, the base 11 does not contact the probe tray 210, but only the probe tray fastener 220. When the annular abutment portion 111 abuts against the probe tray fastener 220, the probe tray 210 is located within the recess of the base 11, which can prevent damage to the probe.

[0046] See Figure 1 In some embodiments, the annular abutment portion 111 is further provided with at least one positioning post 112, which cooperates with the positioning hole on the pin plate fastener 220 to position the base support 11. In this embodiment, there are two positioning posts 112. In other embodiments, the number of positioning posts 112 can be determined according to specific design requirements.

[0047] In some embodiments, the pin plate fastener 220 is provided with mounting holes 221 for connection with the PCB board 300, so that a pin can pass through the mounting holes 221 to connect with the PCB board 300. The base 11 is also provided with a plurality of removal holes 114, each removal hole 114 corresponding to a mounting hole 221, so that a removal tool can remove the pin from the mounting hole 221 of the pin plate fastener 220 through the removal hole 114. The pin passes through the mounting holes 221 on the PCB board 300 and the pin plate fastener 220, thereby connecting the PCB board 300 and the pin plate fastener 220. When it is necessary to disassemble the pin plate fastener 220 and the PCB board 300, the pin is loosened and removed from the removal hole 114 of the base 11, thereby completing the disassembly of the pin plate assembly 200 from the PCB board 300.

[0048] In some embodiments, each top block assembly 20 further includes a connector 22 extending radially along the base 11, the connector 22 being connected to the outer peripheral wall of the base 11 and to the corresponding top block 21. Here, the connector 22 is connected to the base 11 by bolts. In some embodiments, each top block assembly 20 further includes a fixing block 23 mounted on the connector 22, and the top block 21 is mounted on the fixing block 23.

[0049] In some embodiments, a plurality of top block assemblies 20 are evenly arranged along the periphery of the base 11. In this embodiment, the number of top block assemblies 20 is four. In other embodiments, the number of top block assemblies 20 may be six, seven, or eight, depending on the design requirements. For example, the larger the size of the base 11, the more top block assemblies 20 there are; the smaller the size of the base 11, the fewer top block assemblies 20 there are.

[0050] In some embodiments, the top block 21 is made of Teflon material. The top block 21 and the PCB board 300 are in soft contact, which ensures the stability of the connection between the disassembly fixture 100 and the pin tray assembly 200, while also preventing scratches and cosmetic damage to the PCB board 300. In other embodiments, the top block 21 can be made of other materials, as long as soft contact is achieved between the top block 21 and the PCB board 300.

[0051] In some embodiments, the base assembly 10 further includes a plurality of support columns 12, which are vertically arranged below and connected to the base support 11 to support the base support 11. When installing or removing the fixture 100, the support columns 12 of the fixture 100 are placed inside the heat sink assembly, which supports the fixture 100. The heat sink assembly is mounted on the aging lifting mechanism. It should be noted that, normally, the heat sink assembly contains the wafer under test. The aging lifting mechanism lifts the heat sink assembly upwards to mold it with the PCB board 300, forming a sealed test chamber. The test probes of the probe assembly 200 are located inside the test chamber and contact the wafer under test, thereby performing performance testing on the wafer. When the probe assembly 200 needs to be removed, the aging lifting mechanism moves the heat sink assembly downwards. After removing the wafer under test, the support columns 12 of the fixture 100 are supported inside the heat sink assembly, and the probe assembly 200 is removed from the bottom of the PCB board 300.

[0052] In this embodiment, there are four support columns 12, which are evenly arranged below the base 11. In other embodiments, the number of support columns 12 can be set to six, seven, or eight, depending on the design requirements. For example, the larger the size of the base 11, the more support columns 12 there are; the smaller the size of the base 11, the fewer support columns 12 there are.

[0053] In some embodiments, the base assembly 10 further includes a handle 13, which is disposed below and connected to the base support 11. This embodiment facilitates the operation of the disassembly fixture 100 by providing the handle 13, making it easier to transport the disassembly fixture 100.

[0054] In some embodiments, the handle 13 is located at the center of the base 11, and a plurality of support posts 12 are evenly arranged around the handle 13. In other embodiments, the handle 13 may also be located at other positions on the base 11, depending on design requirements.

[0055] To address the cumbersome process of moving the fixture up and down during needle plate assembly 200 replacement, this embodiment introduces a novel disassembly fixture 100. This fixture eliminates the need for operators to move the fixture, reducing the number of operators from two to one. This significantly shortens the operation time for replacing the needle plate assembly 200 or test probes, thus improving the replacement efficiency. Furthermore, eliminating the need to move the fixture up and down also reduces the risk of the needle plate assembly 200 breaking during transport.

[0056] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A disassembly fixture for a needle plate assembly, characterized in that, The pin tray assembly is connected to one side of the PCB board and has multiple connecting parts. The disassembly fixture includes: A base assembly is located on the side of the needle plate assembly opposite to the PCB board. The base assembly includes a base support for supporting the needle plate assembly. The base support has multiple mating parts, each of which is connected to a connecting part. Multiple top block assemblies are respectively installed on the periphery of the base assembly. Each top block assembly includes a top block arranged along the axial direction of the base support. The top of the top block is higher than the top of the base support so as to abut against the PCB board when the base support is connected to the pin plate assembly, and to separate the pin plate assembly from the PCB board after the pin plate assembly is disassembled from the PCB board.

2. The disassembly fixture according to claim 1, characterized in that, The base is circular, and multiple mating parts are evenly arranged along the sides of the base.

3. The disassembly fixture according to claim 2, characterized in that, The needle plate assembly includes a probe plate and an annular needle plate fastener, which is installed on the outer periphery of the probe plate; The top of the base is grooved and has a raised annular abutment portion, which abuts against the pin plate fastener and is provided with the mating portion.

4. The disassembly fixture according to claim 3, characterized in that, The pin plate fastener is provided with mounting holes for connection with the PCB board, so that a pin can be passed through the mounting holes to connect with the PCB board; The base is also provided with a plurality of removal holes, each of which corresponds to one of the mounting holes, so that the removal tool can remove the pin from the mounting hole of the pin plate fastener through the removal hole.

5. The disassembly fixture according to any one of claims 1-4, characterized in that, Each of the top block components also includes: A connector extends radially along the base, the connector being connected to the outer peripheral wall of the base and to the corresponding top block.

6. The disassembly fixture according to any one of claims 1-4, characterized in that, Multiple top block assemblies are evenly arranged along the periphery of the base.

7. The disassembly fixture according to any one of claims 1-4, characterized in that, The top block is made of Teflon material.

8. The disassembly fixture according to any one of claims 1-4, characterized in that, The base assembly also includes: Multiple support columns are arranged vertically below the base and connected to the base to support the base.

9. The disassembly fixture according to claim 8, characterized in that, The base assembly also includes: A handle is located below the base and is connected to the base.

10. The disassembly fixture according to claim 9, characterized in that, The handle is located in the middle of the base, and multiple support columns are evenly arranged around the handle.

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