Test handler

Abstract

This utility model discloses a test sorting machine, relating to the field of chip testing technology. The test sorting machine includes a pushing mechanism, a pressure head assembly, and a connector. The pushing mechanism includes a drive box and a first drive source. The drive box is mounted on the first drive source, which drives the drive box to move along a first direction. The pressure head assembly includes a pressure head base plate and pressure heads. The pressure head base plate is mounted on the drive box and moves with the drive box. A plurality of pressure heads are disposed on the pressure head base plate. The connector is used to lock the drive box and the pressure head base plate. This test sorting machine allows for easy assembly and disassembly of the pressure head assembly by operating the connector. The assembly and disassembly structure is simple, facilitating disassembly and improving efficiency.

Description

Technical Field

[0001] This utility model relates to the field of chip testing technology, and in particular to a test sorting machine. Background Technology

[0002] Test sorters are used to test the performance of chips. During testing, the chips generate a lot of heat. The increased temperature can affect the test results and may damage the chips.

[0003] The test sorting machine includes a pressing mechanism and a pressing head assembly. The pressing head assembly includes a pressing head base plate and a pressing head. The pressing mechanism drives the pressing head to move along a first direction to achieve pressing head bonding test of the chip. The temperature control mechanism on one side of the pressing mechanism provides the pressing head with a suitable temperature for chip testing to avoid chip damage.

[0004] However, as chip sizes continue to shrink, in order to improve testing efficiency, the size of the pressure head of the test sorting machine has decreased and the number of pressure heads has increased. This has resulted in a complex connection structure between the existing pressing mechanism and the pressure head assembly, low efficiency in disassembly and maintenance, and inconvenience in use. Utility Model Content

[0005] The purpose of this utility model is to provide a test sorting machine that simplifies the disassembly and assembly structure of the pushing mechanism and the pressure head assembly, thereby improving disassembly and assembly efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Test sorting machine, including:

[0008] The pushing mechanism includes a drive box and a first drive source, wherein the drive box is mounted on the first drive source and the first drive source is used to drive the drive box to move along a first direction;

[0009] The pressure head assembly includes a pressure head base plate and a pressure head. The pressure head base plate is mounted on the drive box and moves with the drive box. A plurality of pressure heads are provided on the pressure head base plate.

[0010] A connector for locking the drive box and the pressure head base plate.

[0011] As an optional solution for the test sorting machine, the pressure head base plate is provided with an axially penetrating positioning hole, and the connecting piece forms an axial limiting fit with the positioning hole;

[0012] The connector includes a limiting head, a connecting post, and a connecting head that are coaxially connected. The outer diameters of the limiting head and the connecting head are both larger than the outer diameter of the connecting post. The drive box is provided with a connecting hole that is adapted to the connecting head.

[0013] When the limiting head abuts against the pressure head base plate, the connecting head connects to the connecting hole.

[0014] As an optional solution for the test sorting machine, the connecting piece forms an axial limiting fit with the positioning hole through a limiting component;

[0015] The limiting component includes a limiting plate and a limiting sleeve. The positioning hole is configured as a first stepped hole. The limiting sleeve is located in the large-diameter section of the first stepped hole. The limiting plate is fixed on opposite sides of the first stepped hole and cooperates with the first stepped surface of the first stepped hole to restrict the axial movement of the limiting sleeve. The connecting post passes through the limiting sleeve and the small-diameter section of the first stepped hole, and the connecting head can pass through the small-diameter section of the first stepped hole.

[0016] As an optional solution for the test sorting machine, a limiting plate is provided, and the middle of the limiting plate is provided with a relief hole to avoid the limiting head. The limiting plate presses the limiting sleeve against the large diameter section of the first stepped hole.

[0017] And / or, two limiting plates are provided, the two limiting plates are symmetrically arranged on both sides of the limiting sleeve in the circumferential direction, and respectively form limiting grooves with both sides of the first stepped surface, and the flanges extending radially on both sides of the limiting sleeve in the circumferential direction are embedded in the corresponding limiting grooves.

[0018] As an optional solution for the test sorting machine, the pressure head base plate is provided with a ventilation groove facing the pressure head, the drive box is provided with an air cavity for containing temperature fluid, and the drive box is provided with a ventilation hole connecting the air cavity and the ventilation groove. Temperature fluid is supplied to the pressure head through the ventilation hole and the ventilation groove to control the pressure head temperature.

[0019] As an optional solution for the test sorting machine, a support structure is provided on the back side of the pressure head base plate, and the support structure abuts against the drive box to form a buffer air chamber between the pressure head base plate and the drive box;

[0020] And / or, the pressure head includes heat dissipation fins disposed circumferentially thereon, and the ventilation slots are disposed corresponding to the heat dissipation fins.

[0021] As an optional solution for the test sorting machine, the support structure includes a support frame, support ribs, and support protrusions. The support frame surrounds the base plate of the pressure head, and the support ribs are arranged in an array within the support frame. The support protrusions are distributed on the support ribs and / or between the support ribs.

[0022] As an optional solution for the test sorting machine, the drive box includes a first plate and a second plate that are parallel to each other. The first plate is connected to the bottom plate of the pressure head, and an air cavity is formed between the first plate and the second plate. The first plate is provided with ventilation holes that communicate with the air cavity.

[0023] As an optional solution for the test sorting machine, a second drive source is installed on the second plate, and a first through hole and a second through hole are coaxially provided on the first plate and the pressure head base plate. The second drive source is connected to a linkage rod, and the other end of the linkage rod passes through the first through hole and the second through hole in sequence and is connected to the pressure head.

[0024] As an optional configuration for the test sorting machine, the ratio of the number of second drive sources N to the number of pressure heads M is a positive integer.

[0025] The beneficial effects of this utility model are:

[0026] The testing and sorting machine provided by this utility model includes a pressing mechanism, a pressing head assembly, and a connector. The pressing head base plate and the drive box are connected by the connector, so that the first drive source drives the drive box to move in a first direction, which in turn drives the pressing head base plate to move, causing the pressing head on the pressing head base plate to move closer to the chip. This testing and sorting machine allows for easy assembly and disassembly of the pressing head assembly by operating the connector. The assembly and disassembly structure is simple, convenient, and improves the efficiency of assembly and disassembly. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the test sorting machine provided in this embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the push mechanism with the support plate hidden on one side provided in this embodiment of the utility model;

[0029] Figure 3 This is a top view of the pressure head assembly provided in this embodiment of the utility model;

[0030] Figure 4 yes Figure 3 Sectional view along line AA;

[0031] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0032] Figure 6 yes Figure 4 A magnified view of a section at point C;

[0033] Figure 7 This is a schematic diagram of the pressure head assembly provided in an embodiment of the present invention;

[0034] Figure 8This is a front structural diagram of the pressure head base plate provided in this embodiment of the utility model;

[0035] Figure 9 This is a schematic diagram of the back structure of the pressure head base plate provided in this embodiment of the utility model.

[0036] In the picture:

[0037] 1. Drive box; 11. First plate; 111. Connecting hole; 112. First through hole; 12. Second plate; 13. Support plate;

[0038] 2. Pressure head assembly; 21. Pressure head base plate; 211. Positioning hole; 212. Ventilation slot; 213. Support frame strip; 214. Support rib; 215. Support protrusion; 216. Second through hole; 217. Groove; 22. Pressure head; 221. Heat dissipation fins;

[0039] 3. Connector; 31. Limiting head; 32. Connecting post; 33. Connecting head;

[0040] 4. Limiting assembly; 41a. First limiting plate; 42a. First limiting sleeve; 42a.1. Second stepped hole; 43a. First fastening screw; 41b. Second limiting plate; 42b. Second limiting sleeve; 42b.1. Flange; 43b. Second fastening screw; 44b. Limiting groove;

[0041] 5. Buffer air chamber;

[0042] 6. Air cavity;

[0043] 7. Second driving source;

[0044] 8. Linkage rod. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of the 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.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0047] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0050] like Figure 1 As shown, the test sorting machine provided in this embodiment includes a pressing mechanism, a pressing head assembly 2, and a connecting member 3. The pressing mechanism includes a drive box 1 and a first drive source (not shown in the figure). The drive box 1 is mounted on the first drive source, which drives the drive box 1 to move along a first direction. The pressing head assembly 2 includes a pressing head base plate 21 and pressing heads 22. The pressing head base plate 21 is mounted on the drive box 1 and moves with the drive box 1. A plurality of pressing heads 22 are provided on the pressing head base plate 21. The connecting member 3 is used to lock the drive box 1 and the pressing head base plate 21.

[0051] like Figure 2As shown, in one embodiment, the drive housing 1 includes a first plate 11 and a second plate 12 spaced parallel to each other. The first plate 11 is connected to the pressure head base plate 21, and a wind cavity 6 is formed between the first plate 11 and the second plate 12. The first plate 11 is provided with ventilation holes connecting to the wind cavity 6. The wind cavity 6 is connected to an external air duct via a fan to introduce warm fluid from the external air duct into the wind cavity 6. The cold air in the wind cavity 6 passes through the ventilation holes, allowing the warm fluid to contact and exchange heat with the pressure head base plate 21, thereby dissipating heat for the pressure head 22. In this embodiment, the warm fluid is cold air.

[0052] In this embodiment, a support plate 13 is provided around the first plate 11 and the second plate 12 to form a sealed air cavity 6 between the first plate 11 and the second plate 12. The first driving source is a linear motor, which is located below the second plate 12 and connected to the second plate 12. It is used to drive the drive box 1 to move the pressure head base plate 21, so that the pressure head assembly 2 moves along a first direction, which is the direction of approaching or moving away from the chip.

[0053] The first drive source is located below the second plate 12 and is used to drive the entire drive box 1 to move the pressure head assembly 2. The pressure head 22 is floatingly connected to the pressure head base plate 21, meaning that the pressure head 22 can not only move with the pressure head base plate 21, but also move relative to the pressure head base plate 21. The floating connection method of the pressure head 22 on the pressure head base plate 21 can refer to the existing technology design, which is not the focus of improvement in this embodiment, and will not be described in detail here.

[0054] By setting the connector 3 to lock the drive box 1 and the pressure head base plate 21, the pressing mechanism is connected to the pressure head assembly 2. Under the drive of the first drive source, the pressure head base plate 21 moves together with the drive box 1 in the first direction, so that the pressure head 22 on the pressure head base plate 21 moves closer to the chip. When disassembling and assembling the pressure head assembly 2, the entire pressure head assembly 2 can be disassembled and assembled by operating the connector 3. The structure is simple, easy to disassemble and assemble, and improves the efficiency of disassembly and assembly.

[0055] like Figures 2-6 As shown, in one embodiment, the pressure head base plate 21 is provided with an axially penetrating positioning hole 211, and the connector 3 forms an axial limiting fit with the positioning hole 211. The connector 3 includes a limiting head 31, a connecting post 32, and a connecting head 33 coaxially connected. The outer diameters of the limiting head 31 and the connecting head 33 are both larger than the outer diameter of the connecting post 32. The drive box 1 is provided with a connecting hole 111 adapted to the connecting head 33. When the limiting head 31 abuts against the pressure head base plate 21, the connecting head 33 connects with the connecting hole 111. With this configuration, disassembly can be performed simply by disconnecting the connecting head 33 from the connecting hole 111; the disassembly and assembly operation is simpler, further improving the disassembly and assembly efficiency of the pressure head assembly 2.

[0056] In this embodiment, the connecting hole 111 is a threaded hole, and the connector 33 is provided with external threads, which are screwed into the threaded hole. In other embodiments, the connector 33 and the connecting hole 111 can also be plugged into each other.

[0057] The drive box 1 is secured by the connector 3 fixed to the base plate 21 of the pressure head. When disassembling the pressure head assembly 2, it is not necessary to disassemble the connector 3. Simply turn the limiting head 31 by hand to unscrew the connector 3 from the connecting hole 111 and move it axially along the positioning hole 211 to release the connection between the pressure head assembly 2 and the drive box 1, thus removing the pressure head assembly 2 from the drive box 1. When installing the pressure head assembly 2, simply align the connector 33 with the connecting hole 111 and screw the limiting head 31 to screw the connector 33 into the connecting hole 111, thus completing the locking of the pressure head assembly 2 to the drive box 1.

[0058] Alternatively, to facilitate the docking of the pressure head base plate 21 and the first plate 11, the connector 33 can be retracted into the positioning hole 211. In this case, the connector 33 will not interfere with the relative movement of the pressure head base plate 21 and the first plate 11 in the radial direction of the connector 33.

[0059] In one embodiment, the connector 3 forms an axial limiting fit with the positioning hole 211 through the limiting component 4. The limiting component 4 includes a limiting plate and a limiting sleeve. The positioning hole 211 is configured as a first stepped hole, and the limiting sleeve is located in the large-diameter section of the first stepped hole. The limiting plate is fixed on opposite sides of the first stepped hole and engages with the first stepped surface of the first stepped hole to restrict the axial movement of the limiting sleeve. The connecting post 32 passes through the limiting sleeve and the small-diameter section of the first stepped hole, and the connecting head 33 can pass through the small-diameter section of the first stepped hole to achieve insertion and locking with the connecting hole 111. The design of the limiting component 4 forms a bidirectional constraint on the limiting sleeve through the limiting plate and the first stepped surface, reducing the axial displacement tolerance of the limiting sleeve, thereby improving the fitting accuracy of the connecting head 33 and the connecting hole 111, and increasing the load-bearing capacity of the connector 3.

[0060] In this embodiment, multiple connectors 3 and limiting components 4 are provided one-to-one, respectively arranged on the two opposite peripheries and the middle area of ​​the pressure head base plate 21, to ensure the stability of the connection between the pressure head assembly 2 and the drive box 1. It should be noted that the connectors 3 and limiting components 4 located in the middle area are arranged to avoid the pressure head 22, so as to reduce the interference of the pressure head 22 on the disassembly and assembly operations when disassembling and assembling the pressure head assembly 2.

[0061] In one embodiment, a single limiting plate is provided, with a clearance hole in the middle of the limiting plate to avoid the limiting head 31. The limiting plate presses the limiting sleeve against the large-diameter section of the first stepped hole. Or, two limiting plates are provided, symmetrically arranged on both sides of the limiting sleeve in the circumferential direction, and respectively forming limiting grooves 44b with both sides of the first stepped surface. The flanges 42b.1 extending radially on both sides of the limiting sleeve in the circumferential direction are embedded in the corresponding limiting grooves 44b.

[0062] like Figure 5 and Figure 8 As shown, specifically, the limiting assembly 4 includes a limiting plate that cooperates with a limiting sleeve to limit the setting of the limiting plate of the connecting member 3. It is suitable for being set on the opposite two peripheries of the pressure head base plate 21. Since the pressure head 22 is not set on the opposite two peripheries of the pressure head base plate 21, the limiting plate and the limiting head 31 can protrude from the upper surface of the pressure head base plate 21 without affecting the installation of the pressure head 22. For ease of description, the limiting plate set on the opposite two peripheries of the pressure head base plate 21 is referred to as the first limiting plate 41a, and the limiting sleeve is referred to as the second limiting sleeve 42b. The limiting head 31 of the connecting member 3 connected to the first limiting plate 41a and the first limiting sleeve 42b is referred to as the first limiting head, the connecting post 32 is referred to as the first connecting post, and the connecting head 33 is referred to as the first connecting head.

[0063] like Figures 6-8 As shown, the middle area of ​​the pressure head base plate 21 is equipped with a pressure head 22. To avoid affecting the installation of the pressure head 22, grooves 217 communicating with the first stepped hole are provided on both sides of the first stepped hole. The limiting plate is placed in the groove 217, and the limiting head 31 is completely placed in the large diameter section of the first stepped hole. The limiting head 31 is lower than or flush with the upper surface of the pressure head base plate 21. For ease of description, the limiting plate in the middle area of ​​the pressure head base plate 21 is referred to as the second limiting plate 41b, and the limiting sleeve is referred to as the second limiting sleeve 42b. The limiting head 31 of the connector 3 connected to the second limiting sleeve 42b is referred to as the second limiting head, the connecting post 32 is referred to as the second connecting post, and the connecting head 33 is referred to as the second connecting head.

[0064] Specifically, the two ends of the clearance hole of the first limiting plate 41a are respectively screwed and fixed to the first threaded hole on the pressure head base plate 21 by the first fastening screw 43a. The outer diameter of the first limiting sleeve 42a is larger than the diameter of the clearance hole. A second stepped hole 42a.1 is provided inside the first limiting sleeve 42a.1. The small diameter section of the second stepped hole 42a.1 is located close to the first limiting head, and the end face of the first limiting head abuts against the small diameter section. The large diameter section of the second stepped hole 42a.1 is located close to the first connecting head, and the first connecting post passes through the second stepped hole 42a.1. When disassembling the pressure head assembly 2, by holding the first limiting head, the first connecting head can be pulled into the large diameter section of the second stepped hole 42a.1 to completely disengage from the connecting hole 111, thereby disassembling the pressure head assembly 2 from the drive box 1.

[0065] Two second limiting plates 41b are respectively placed in two grooves 217. The bottom surface of the groove 217 closest to the first stepped surface is the first bottom surface, and the bottom surface of the groove 217 furthest from the first stepped surface is the second bottom surface. The first bottom surface and the first stepped surface are on the same plane, and the second bottom surface is higher than the first bottom surface. A second threaded hole is provided on the second bottom surface. The second limiting plate 41b is placed on the second bottom surface, and a limiting groove 44b is formed between the second limiting plate 41b and the first bottom surface. The second fastening screw 43b passes through the second limiting plate 41b and is screwed into the second threaded hole for fixation. The height of the second limiting sleeve 42b is less than the height of the first limiting sleeve 42a, and a through hole is provided in the second limiting sleeve 42b to fit with the second connecting column with clearance, so that the second limiting head is located in the large diameter section of the first stepped hole.

[0066] Continue to refer to Figure 2 and Figure 8 Since the pressure head 22 is floatingly mounted on the pressure head base plate 21, it can move away from the pressure head base plate 21. A second drive source 7 is mounted on the second plate 12. A first through hole 112 and a second through hole 216 are coaxially arranged on the first plate 11 and the pressure head base plate 21. The second drive source 7 is connected to a linkage rod 8, and the other end of the linkage rod 8 passes through the first through hole 112 and the second through hole 216 in sequence and connects to the pressure head 22. The second drive source 7, connected to the linkage rod 8, drives the pressure head 22 to move, thereby increasing the contact force between the pressure head 22 and the chip, and thus ensuring the validity of the test.

[0067] Because different power chips generate different amounts of heat during testing, the heat dissipation structure of the pressure head assembly 2 is designed to meet the heat dissipation requirements of different power chips. Therefore, different heat dissipation structures for the pressure head assembly 2 are required when testing chips of different power, increasing chip testing costs.

[0068] The test sorting machine provided in this embodiment locks the pressure head base plate 21 and the drive box 1 through the connector 3. When testing chips with different power, the pressure head assembly 2 can be disassembled and replaced with a pressure head assembly 2 that meets the heat dissipation requirements of the tested chip simply by operating the connector 3, without having to replace the pushing mechanism. This improves versatility and reduces testing costs.

[0069] Currently, the commonly used pressure head assembly 2 is suitable for the heat dissipation requirements of low-power chips. To meet the heat dissipation requirements of high-power chips, the existing pressure head assembly 2 is improved. In this embodiment, the area of ​​the pressure head base plate 21 of the pressure head assembly 2 is the same as that of the existing pressure head base plate 21, so as to be compatible with the existing drive box 1. The number and structure of the pressure heads 22 are different. The pressure head assembly 2 in this embodiment has fewer pressure heads 22, and the ratio of the number of pressure heads 22 in the existing pressure head assembly 2 to the number of pressure heads 22 in the pressure head assembly 2 provided in this embodiment is a positive integer, so as to leave space around the pressure heads 22 for setting up heat dissipation structures.

[0070] Furthermore, the ratio of the number N of the second drive sources 7 to the number M of the pressure heads 22 is a positive integer. That is, the number of second drive sources 7 in the existing drive box 1 is the same as the number of existing pressure heads 22. In order to meet the driving needs of the pressure heads 22 in the pressure head assembly 2 with different numbers of pressure heads 22, the ratio of the number N of the second drive sources 7 to the number M of the pressure heads 22 is set to a positive integer so that each pressure head 22 can be driven individually when testing lower power chips and higher power chips. When testing higher power chips, some of the first through holes 112 on the first board 11 can be used as ventilation holes for connecting the ventilation cavity 6.

[0071] Furthermore, for the pressure head assembly 2 used for testing high-power chips, to improve heat dissipation efficiency, the pressure head 22 includes heat dissipation fins 221 arranged around its periphery. A ventilation slot 212 facing the pressure head 22 is provided on the pressure head base plate 21, corresponding to the heat dissipation fins 221. The drive housing 1 has a wind chamber 6 for containing temperature fluid. A portion of the first through-hole 112 on the first plate 11 of the drive housing 1 serves as a ventilation hole connecting the wind chamber 6 and the ventilation slot 212. Temperature fluid is supplied to the pressure head 22 through the ventilation hole and the ventilation slot 212 to control the temperature of the pressure head 22. To improve the heat dissipation efficiency of the pressure head 22, heat dissipation fins 221 are arranged around the pressure head 22. The temperature fluid in the wind chamber 6 flows out of the drive housing 1 through the ventilation hole and through the ventilation slot 212, passing through the pressure head base plate 21 and flowing to the heat dissipation fins 221 around the pressure head 22, thereby accelerating the heat dissipation efficiency of the pressure head 22.

[0072] In one embodiment, a support structure is provided on the back side of the pressure head base plate 21, and the support structure abuts against the drive box 1 to form a buffer air cavity 5 between the pressure head base plate 21 and the drive box 1. The provision of the support structure creates a gap space between the back side of the pressure head base plate 21 and the upper surface of the first plate 11 of the drive box 1, and this gap space forms the buffer air cavity 5. The airflow in the buffer air cavity 5 flows evenly to each ventilation slot 212. The warm fluid in the air cavity 6 first enters the buffer air cavity 5 through the ventilation holes, and then flows evenly from the buffer air cavity 5 to each ventilation slot 212. The warm fluid flowing out of the ventilation slot 212 blows onto the heat dissipation fins 221 corresponding to each of them.

[0073] like Figure 9 As shown, specifically, the support structure includes a support frame 213, support ribs 214, and support protrusions 215. The support frame 213 surrounds the pressure head base plate 21, and the support ribs 214 are arranged in an array within the support frame 213. The support protrusions 215 are distributed on and / or between the support ribs 214, and each support protrusion 215 has a positioning hole 211. The positioning holes 211 located on both sides of the pressure head base plate 21 are located on the support frame 213, and the support frame 213 abuts against the first plate 11. The positioning holes 211 located in the middle area of ​​the pressure head base plate 21 are located on the support protrusions 215, and the support protrusions 215 abut against the first plate 11, which not only forms the buffer air chamber 5, but also ensures the stability when the drive box 1 and the pressure head base plate 21 are locked together by the connector 3.

[0074] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A test handler characterized by, include: The pushing mechanism includes a drive box (1) and a first drive source, wherein the drive box (1) is mounted on the first drive source and the first drive source is used to drive the drive box (1) to move along a first direction; The pressure head assembly (2) includes a pressure head base plate (21) and a pressure head (22). The pressure head base plate (21) is installed on the drive box (1) and moves with the drive box (1). A plurality of pressure heads (22) are provided on the pressure head base plate (21). Connector (3) is used to lock the drive box (1) and the pressure head base plate (21).

2. The test handler of claim 1, wherein, The pressure head base plate (21) is provided with an axially penetrating positioning hole (211), and the connector (3) forms an axial limiting fit with the positioning hole (211); The connector (3) includes a limiting head (31), a connecting post (32) and a connecting head (33) connected coaxially. The outer diameters of the limiting head (31) and the connecting head (33) are both larger than the outer diameter of the connecting post (32). The drive box (1) is provided with a connecting hole (111) adapted to the connecting head (33). When the limiting head (31) abuts against the pressure head base plate (21), the connecting head (33) connects to the connecting hole (111).

3. The test sorting machine according to claim 2, characterized in that, The connector (3) forms an axial limiting fit with the positioning hole (211) through the limiting component (4); The limiting component (4) includes a limiting plate and a limiting sleeve. The positioning hole (211) is set as a first stepped hole. The limiting sleeve is located in the large diameter section of the first stepped hole. The limiting plate is fixed on the opposite sides of the first stepped hole and cooperates with the first stepped surface of the first stepped hole to restrict the axial movement of the limiting sleeve. The connecting column (32) passes through the limiting sleeve and the small diameter section of the first stepped hole. The connecting head (33) can pass through the small diameter section of the first stepped hole.

4. The test handler of claim 3, wherein, The limiting plate is provided in one part, and the middle part of the limiting plate is provided with a clearance hole to avoid the limiting head (31). The limiting plate presses the limiting sleeve against the large diameter section of the first stepped hole. And / or, two limiting plates are provided, and the two limiting plates are symmetrically arranged on both sides of the limiting sleeve in the circumferential direction, and respectively form limiting grooves (44b) with both sides of the first stepped surface. The flanges (42b.1) extending radially on both sides of the limiting sleeve in the circumferential direction are embedded in the corresponding limiting grooves (44b).

5. The test handler of any of claims 1-4, wherein, The pressure head base plate (21) is provided with a ventilation groove (212) facing the pressure head (22). The drive box (1) is provided with a wind chamber (6) for containing temperature fluid. The drive box (1) is provided with a ventilation hole connecting the wind chamber (6) and the ventilation groove (212). Temperature fluid is supplied to the pressure head (22) through the ventilation hole and the ventilation groove (212) to control the temperature of the pressure head (22).

6. The test handler of claim 5, wherein, A support structure is provided on the back side of the pressure head base plate (21), and the support structure abuts against the drive box (1) to form a buffer air chamber (5) between the pressure head base plate (21) and the drive box (1); And / or, the pressure head (22) includes heat dissipation fins (221) disposed thereon, and the ventilation slot (212) is disposed corresponding to the heat dissipation fins (221).

7. The test handler of claim 6, wherein, The support structure includes a support frame (213), support ribs (214), and support protrusions (215). The support frame (213) surrounds the pressure head base plate (21), and the support ribs (214) are arranged in an array within the support frame (213). The support protrusions (215) are distributed on the support ribs (214) and / or between the support ribs (214).

8. The test handler of any of claims 1-4, wherein, The drive box (1) includes a first plate (11) and a second plate (12) spaced in parallel. The first plate (11) is connected to the pressure head base plate (21). A wind cavity (6) is formed between the first plate (11) and the second plate (12). The first plate (11) is provided with ventilation holes that communicate with the wind cavity (6).

9. The test handler of claim 8, wherein, A second drive source (7) is installed on the second plate (12). A first through hole (112) and a second through hole (216) are coaxially provided on the first plate (11) and the pressure head base plate (21). The second drive source (7) is connected to a linkage rod (8). The other end of the linkage rod (8) passes through the first through hole (112) and the second through hole (216) in sequence and is connected to the pressure head (22).

10. The test handler of claim 9, wherein, The ratio of the number N of the second drive source (7) to the number M of the pressure head (22) is a positive integer.

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