Needle card adjusting jig

Abstract

Embodiments of the present application disclose a needle card adjusting jig. The jig comprises a suction platform, a first sliding plate, a second sliding plate, a bottom plate and a lifting assembly. According to the embodiments of the present application, when the probe is replaced, the needle card is first fixed by suction, then the horizontal movement of the needle card can be realized by moving the first sliding plate and the second sliding plate, and the vertical movement of the needle card can be realized by retracting or extending the lifting bracket. Compared with the prior art, the present application realizes the multi-point and / or continuous vertical upward support of the bottom plate arranged along the first direction and the second direction by the plurality of lifting brackets arranged linearly along one of the first direction and the second direction and the support surface extending along the other of the first direction and the second direction for supporting the bottom plate, thereby ensuring that the center of gravity of the jig is always in the center position or a certain range of the center position of the support range of the lifting assembly to the bottom plate, and ensuring that the levelness of the needle card on the jig meets the requirements.

Description

Technical Field

[0001] This application relates to the field of probe replacement technology, and in particular to a needle clip adjustment fixture. Background Technology

[0002] 3D MEMS probe cards are probe structures manufactured based on micro-electro-mechanical systems (MEMS) technology. They achieve micron-level precision through semiconductor processes such as photolithography and etching, and are widely used in the field of semiconductor chip testing due to their high-precision structure.

[0003] In the field of semiconductor chip testing, due to varying testing requirements or damage to some probes, it is necessary to replace probes at specific locations. Because 3D MEMS probe cards feature high density, micro-pitch, and high-concurrency probe arrangement, probe replacement tools such as soldering irons are limited by the confined space. This not only makes precise positioning difficult but also poses a risk of damaging surrounding intact probes, resulting in low replacement efficiency and high repair costs. Some manufacturers use specific fixtures to adjust the spatial position of the probe cards to reduce the risk of collision. These fixtures typically include a lifting component for adjusting the height of the probe card and a leveling component for adjusting its horizontal position. However, in actual adjustment, it has been found that if the height of the probe card becomes too high after adjustment, the probe card's levelness can be poor, affecting the replacement of probes at certain locations on the probe card. Utility Model Content

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a needle clip adjustment fixture to solve the problem that the needle clip's levelness is poor after the existing fixture adjusts the needle clip's position.

[0005] This application provides a needle clip adjustment fixture, comprising an adsorption platform, a first sliding plate, a second sliding plate, a base plate, and a lifting assembly arranged sequentially in a vertically downward direction. The adsorption platform is mounted on the first sliding plate, the first sliding plate is slidably disposed on the second sliding plate along a first direction, and the second sliding plate is slidably disposed on the base plate along a second direction; wherein the first direction and the second direction are mutually perpendicular horizontal directions. The lifting assembly includes an adjustment structure and at least two sets of lifting brackets, all of which are linearly arranged along one of the first and second directions. Each lifting structure has a support surface for supporting the base plate, and the support surface extends along the other of the first and second directions. The adjustment structure includes a guide rod and at least two moving parts disposed on the guide rod. Each set of lifting brackets is connected to each moving part in a one-to-one correspondence. When a moving part is driven by an external force, the moving part moves along the guide rod to cause the lifting bracket connected to it to retract or expand, thereby causing the base plate to move in a vertical direction.

[0006] Based on the aforementioned fixture, when changing the probe on the needle holder, the needle holder is first placed on the adsorption platform and fixed in place. Then, the needle holder can be moved horizontally by moving the first and second sliding plates. Furthermore, the moving component can be driven to retract or expand the connected lifting bracket, thereby moving the base plate vertically, ultimately achieving vertical movement of the needle holder. Compared to existing technologies, this application utilizes multiple lifting brackets arranged linearly along one of the first and second directions, and a support surface extending along the other of the first and second directions to support the base plate. This provides multi-point and / or continuous vertical support to the base plate arranged along the first and second directions, ensuring that the fixture's center of gravity remains at the center of the support range provided by the lifting assembly or within a certain range of the center, ultimately ensuring that the needle holder on the fixture achieves the required levelness.

[0007] In one or more embodiments of the above-described fixture, the lifting assembly further includes a base;

[0008] Each set of lifting brackets includes two connecting shafts, each extending along the length of the lifting bracket and arranged linearly in the vertical direction. The two connecting shafts are fixedly connected to the base and the bottom plate, respectively. The supporting surface is located on the surface connected to the bottom plate. Each connecting shaft has a connecting rod rotatably connected to both ends. The two connecting rods at the same end in each set of lifting brackets are rotatably connected by an intermediate shaft. All intermediate shafts in each set of lifting brackets are connected to the same moving component. The intermediate shafts in each set of lifting brackets are connected to their respective moving components. When the guide rod rotates under external force, the corresponding moving component is driven by the guide rod to move along the axial direction of the guide rod, thereby causing the rotatably connected connecting rods to rotate relative to each other. This causes the lifting bracket connected to the moving component to contract or expand, thereby causing the bottom plate to move in the vertical direction.

[0009] Furthermore, based on the aforementioned lifting component design, the overall structure of the fixture is simple, and the fixture can be precisely adjusted in the height direction by manual adjustment.

[0010] In one or more embodiments of the above-described fixture, the guide rod includes a bidirectional lead screw and a knob mounted on the end of the bidirectional lead screw, and the two moving parts are respectively mounted on the left-hand threaded portion and the right-hand threaded portion of the bidirectional lead screw.

[0011] In one or more embodiments of the above-described fixture, the lifting assembly further includes a deformable intermediate structure disposed on one side of the lifting bracket along a third direction. One end of the intermediate structure along the vertical direction is fixed to the bearing surface on which the pin adjustment fixture is placed, and the other end is connected to the base plate. When the base plate moves along the vertical direction, the intermediate structure deforms accordingly. In the horizontal plane, the third direction is perpendicular to the arrangement direction of the lifting bracket.

[0012] Furthermore, based on the aforementioned intermediate structure, the support surface for the base plate can be expanded, the lifting speed can be slowed down, and the accuracy of adjusting the height of the base plate can be improved.

[0013] In one or more embodiments of the above-described fixture, the intermediate structure includes at least two mounting shafts. Two adjacent mounting shafts along the deformation path of the intermediate structure are connected by at least one intermediate rod. Each intermediate rod is rotatably connected to the mounting shaft connected to it. The mounting shaft located at the bottom in the height direction of the fixture is fixedly connected to the bearing surface on which the pin adjustment fixture is placed, and the mounting shaft at the top is fixedly connected to the base plate. The axial direction of the mounting shaft is the same as that of the first direction or the second direction.

[0014] In one or more embodiments of the above-described fixture, the lower surfaces of the first sliding plate and the second sliding plate are provided with sliders, and the upper surfaces of the second sliding plate and the base plate are provided with slides, each slide containing an elastic element connected to the slider.

[0015] In one or more embodiments of the fixture described above, each of the slides is provided with an elastic element symmetrically arranged about the slider.

[0016] In one or more embodiments of the above-described fixture, mounting seats are installed on the sides of the second sliding plate and the base plate, and each mounting seat is threaded with a threaded rod, which extends inward along the corresponding slide rail and abuts against the slider in the slide rail.

[0017] In one or more embodiments of the above-described fixture, each of the slides is provided with a guide seat, and the threaded rod is threadedly connected to the guide seat.

[0018] In one or more embodiments of the above-described fixture, the adsorption platform includes an adsorption disk and a rotating assembly disposed below the adsorption disk. The rotating assembly is mounted on the first sliding plate and is used to drive the adsorption disk to rotate around a vertical axis.

[0019] The above-described one or more embodiments of this application have at least one or more of the following beneficial effects:

[0020] When changing the probe on the needle holder, the needle holder is first placed on the adsorption platform and fixed in place. Then, the needle holder can be moved horizontally by moving the first and second sliding plates. Furthermore, the moving component can be driven to retract or expand the connected lifting bracket, thereby moving the base plate vertically, ultimately achieving vertical movement of the needle holder. Compared to existing technologies, this application uses multiple lifting brackets arranged linearly along one of the first and second directions, and a support surface extending along the other of the first and second directions to support the base plate. This provides multi-point and / or continuous vertical support to the base plate arranged along the first and second directions, ensuring that the center of gravity of the fixture is always at the center of the support range of the lifting assembly on the base plate or within a certain range of the center, ultimately ensuring that the levelness of the needle holder on the fixture meets the requirements.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0023] Figure 1 This is a schematic diagram of a needle adjustment fixture provided in an embodiment of this application;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of a structure for demonstrating a lifting assembly, provided in an embodiment of this application;

[0026] Figure 4 This is a side view of a needle adjustment fixture provided in an embodiment of this application;

[0027] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Adsorption platform; 11. Adsorption plate; 12. Rotating assembly; 121. Rotating rod; 122. Seat; 123. Base; 124. Rotating column; 125. Passive part; 2. First sliding plate; 21. Slider; 22. Elastic element; 3. Second sliding plate; 31. Slide rail; 32. Mounting seat; 33. Threaded rod; 34. Guide seat; 4. Base plate; 5. Lifting assembly; 51. Adjusting structure; 511. Guide rod; 5111. Two-way lead screw; 5112. Knob; 512. Moving part; 52. Lifting bracket; 521. Support surface; 522. Connecting shaft; 523. Connecting rod; 524. Intermediate shaft; 53. Intermediate structure; 531. Mounting shaft; 532. Intermediate rod; 54. Base; 6. Vacuum seat. Detailed Implementation

[0030] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0031] As described in the background art, when using existing fixtures to adjust the spatial position of the needle card, after adjusting the needle card in the horizontal direction, the position of the needle card changes relative to the initial position of the fixture, and the horizontal component of the fixture also moves relative to the lifting component, causing the center of gravity of the fixture to change. If the height of the needle card is then adjusted, the needle card is prone to tilting, resulting in poor levelness of the needle card, which affects the replacement of probes at certain positions by the needle changing tool.

[0032] Therefore, this application creatively proposes a needle clip adjustment fixture, which includes an adsorption platform, a first sliding plate, a second sliding plate, a base plate, and a lifting assembly. When changing the probe on the needle clip, the needle clip is first placed on the adsorption platform and fixed in place. Then, the needle clip can be moved horizontally by moving the first and second sliding plates. Furthermore, the moving component can be driven to retract or expand the lifting bracket connected to it, thereby moving the base plate vertically, ultimately achieving vertical movement of the needle clip. Compared to the prior art, this application achieves multi-point and / or continuous vertical upward support for the base plate by using multiple lifting brackets linearly arranged along one of the first and second directions, and a support surface extending along the other of the first and second directions to support the base plate. This ensures that the center of gravity of the fixture is always at the center of the support range of the lifting assembly on the base plate or within a certain range of the center, ultimately ensuring that the levelness of the needle clip on the fixture meets the requirements.

[0033] The present application will be specifically described below through specific embodiments.

[0034] Reference Figures 1 to 5 As shown, this application embodiment provides a needle card adjustment fixture, which includes an adsorption platform 1, a first sliding plate 2, a second sliding plate 3, a base plate 4, and a lifting assembly 5 arranged sequentially from top to bottom in a vertical direction. The adsorption platform 1 is mounted on the first sliding plate 2, the first sliding plate 2 is slidably disposed on the second sliding plate 3 along a first direction, and the second sliding plate 3 is slidably disposed on the base plate 4 along a second direction; wherein, the first direction and the second direction are perpendicular to each other in the horizontal plane.

[0035] The lifting assembly 5 includes an adjustment structure 51 and at least two sets of lifting brackets 52. The multiple sets of lifting brackets 52 are arranged linearly along one of the first and second directions. Each set of lifting brackets 52 has a support surface 521 for supporting the base plate 4. The length direction of the support surface 521 extends along the other of the first and second directions.

[0036] The adjustment structure 51 includes a guide rod 511 and at least two moving parts 512 disposed on the guide rod 511. Each set of lifting brackets 52 is connected to each moving part 512 in a one-to-one correspondence. After the moving part 512 is driven by an external force, the moving part 512 moves along the guide rod 511 to drive the lifting bracket 52 connected to it to retract or expand, thereby driving the base plate 4 to move in the vertical direction.

[0037] It is understandable that the various parts of the fixture are set in the vertical direction in order to ensure that the parts are parallel. Under normal circumstances, the support surface 521 set on the fixture is generally a horizontal plane. In this embodiment, the fixture is generally placed on a test bench or other test device. The surface of the test bench is horizontal so that the fixture can be placed stably. Therefore, the vertical direction in this embodiment is the same as the vertical direction.

[0038] In some examples, the first sliding plate 2, the second sliding plate 3, and the base plate 4 can be any regular shape such as a rectangular plate, a prismatic plate, or a disk, or any other irregular shape, as long as the horizontality of the pin clip is guaranteed when it moves horizontally. In this embodiment, the first sliding plate 2, the second sliding plate 3, and the base plate 4 are all rectangular plates in shape.

[0039] It should be noted that the adjusting structure 51 can be a component capable of linearly moving the movable part 512 along the guide rod 511. For example, a guide rail slider assembly, where the guide rod 511 acts as a guide rail and the movable part 512 acts as a slider 21, allows for the opposite or reverse movement of different movable parts 512. Generally, for ease of operation, the guide rail slider assembly can use an electrically driven guide rail slider to drive one or more movable parts 512. Alternatively, a separate push rod can be used to push or pull the slider 21. For example, a suction cup can be provided at the end of the push rod, or a threaded hole can be provided on the slider 21, allowing the push rod to be threadedly connected to the slider 21, and then the slider 21 can be pushed or pulled using the push rod. It can also be a lead screw assembly, where the guide rod 511 acts as a lead screw and the movable part 512 acts as a nut, also enabling the opposite or reverse movement of different movable parts 512.

[0040] Furthermore, while the base plate 4 is designed to be as level as possible, it may tilt slightly due to limitations in the manufacturing and installation precision of the fixture. Therefore, the tilt angle of the base plate 4 can be precisely adjusted using the adjustment structure 51. Specifically, the adjustment structure 51 is used to individually control different moving parts 512. For example, the guide rods 511 can be set as branch rods with at least the same number as the moving parts 512, and the moving parts 512 on each branch rod can be driven individually. If the branch rods are set with a high-precision threaded structure, a set of lifting brackets 52 can be precisely adjusted, thereby correcting the tilt of the base plate 4.

[0041] Reference Figure 1As shown, in this embodiment, the X-axis is the first direction, the Y-axis is the second direction, and the Z-axis is the vertical direction.

[0042] Specifically, when changing the probe on the needle holder, the needle holder is first placed on the adsorption platform 1 and fixed in place. Then, the needle holder can be moved horizontally by moving the first sliding plate 2 and the second sliding plate 3. Furthermore, the moving component 512 can be moved to retract or expand the connecting lifting bracket 52, thereby moving the base plate 4 vertically, ultimately achieving vertical movement of the needle holder. Compared to existing technologies, this application uses multiple sets of lifting brackets 52 arranged linearly along one of the first and second directions, and a support surface 521 extending along the other of the first and second directions to support the base plate 4. This provides multi-point or continuous vertical support for the base plate 4 arranged along the first and second directions, ensuring that the center of gravity of the fixture is always at the center of the support range of the lifting component 5 on the base plate 4 or within a certain radius of the center, ultimately ensuring that the levelness of the needle holder on the fixture meets the requirements.

[0043] It should be noted that the number of lifting brackets 52 can be flexibly adjusted according to the size of the pin clip (corresponding to the size of the base plate 4) and the actual process requirements. If three or more sets of lifting brackets 52 are arranged along the first direction, the number of moving parts 512 on the guide rod 511 will also increase to three or more sets. In the actual adjustment process, in order to facilitate the adjustment of the movement of one or more moving parts 512, an electric drive method is generally used to drive the movement of the moving parts 512. For example, an electrically driven guide rail slider module is selected as the combination structure of the guide rod 511 and the moving parts 512.

[0044] Reference is provided as an example, not a limitation. Figure 3 As shown, the lifting assembly 5 also includes a base 54; the base 54 ensures the stability of the lifting assembly 5 in both static and dynamic states.

[0045] Each set of lifting brackets 52 includes two connecting shafts 522. Each connecting shaft 522 extends along the extension direction of the lifting bracket 52, and the two connecting shafts 522 are arranged linearly in the vertical direction. The two connecting shafts 522 are fixedly connected to the base 54 and the base plate 4 respectively.

[0046] The support surface 521 is located on the surface of the connecting shaft 522 connected to the base plate 4. During the actual assembly of the fixture, welding or other methods can be used to connect the base plate 4 with the corresponding connecting shaft 522, as well as the base 54 with the corresponding connecting shaft 522, thereby ensuring the structural strength between the retractable part and the fixed part of the lifting assembly 5.

[0047] Each connecting shaft 522 has a connecting rod 523 rotatably connected to both ends. In each group of lifting brackets 52, the two connecting rods 523 at the same end are rotatably connected through an intermediate shaft 524. All intermediate shafts 524 in each group of lifting brackets 52 are connected to the same moving part 512. The intermediate shafts 524 in different groups of lifting brackets 52 are connected to different moving parts 512.

[0048] After the guide rod 511 rotates under external force, the corresponding moving part 512 is driven by the guide rod 511 to move along the axial direction of the guide rod 511, so as to drive the connecting rods 523 to rotate relative to each other, so that the lifting bracket 52 connected to the moving part 512 that causes the movement retracts or expands, thereby driving the base plate 4 to move in the vertical direction.

[0049] It should be noted that, in this embodiment, reference is made to... Figure 3 As shown, in order to reduce the volume of the lifting assembly 5, the two rotatably connected links 523 are V-shaped in the initial state, and the V-shaped ends of the two rotatably connected links 523 in adjacent groups are arranged opposite each other.

[0050] In addition, when there are three or more sets of lifting brackets 52, the V-shaped ends of the two connecting rods 523 of the adjacent sets can be arranged opposite each other or opposite each other.

[0051] Specifically, when adjusting the height of the pin clip, first rotate the guide rod 511, then move the two movable parts 512 mounted on the guide rod 511 away from each other, thereby moving the intermediate shaft 524 connected to the movable parts 512. The two connecting rods 523 rotatably connected to the intermediate shaft 524 are restricted and can only rotate relative to the intermediate shaft 524, making the included angle between the two rotatably connected connecting rods 523 larger and larger. At the same time, the connecting shaft 522 will also rise, thereby driving the movable parts 512 and the guide rod 511 to rise, ultimately raising the base plate 4. Similarly, if the height of the base plate 4 needs to be lowered, simply rotate the guide rod 511 in the opposite direction to move the two movable parts 512 closer to each other.

[0052] Furthermore, in some examples, refer to Figure 3 As shown, the guide rod 511 includes a bidirectional lead screw 5111 and a knob mounted on the end of the bidirectional lead screw 5111. Two moving parts 512 are respectively mounted on the left-hand threaded part and the right-hand threaded part of the bidirectional lead screw 5111.

[0053] By rotating the knob 5112, the bidirectional lead screw 5111 can be driven to rotate, thereby causing the two moving parts 512 to move closer or further apart.

[0054] In some examples, refer to Figure 3As shown, the lifting assembly 5 also includes a deformable intermediate structure 53. The intermediate structure 53 is disposed on one side of the lifting bracket 52 along the third direction. One end of the intermediate structure 53 along the vertical direction is fixed to the bearing surface on which the pin clamp adjustment fixture is placed, and the other end is connected to the base plate 4.

[0055] As the base plate 4 moves vertically, the intermediate structure 53 deforms accordingly.

[0056] Among them, the third direction is perpendicular to the arrangement direction of the lifting bracket 52.

[0057] It is understandable that one end of the intermediate structure 53 in the vertical direction is generally fixed to the bearing surface on which the fixture is placed, such as the horizontal surface of the test bench, in order to ensure the stability of the movement of the intermediate structure 53.

[0058] In this embodiment, to facilitate the transfer of the fixture, one end of the intermediate structure 53 is not fixed to the test platform, but rather one end of the intermediate structure 53 is connected to the base 54, and the other end is connected to the base plate 4. When the base plate 4 rises or falls, the force exerted by the intermediate structure 53 on the base plate 4 is balanced by the force exerted by the lifting bracket 52 on the base plate 4.

[0059] By setting the intermediate structure 53, which can also support part of the base plate 4, and cooperating with the support surface 521, the support area of ​​the base plate 4 is further increased, thereby improving the levelness of the base plate 4 in a static or moving state, and further ensuring the levelness of the needle card fixture; it can also slow down the lifting speed of the base plate 4 by the force required for its own deformation, ensuring the smooth operation of the base plate 4.

[0060] Furthermore, in some examples, the intermediate structure 53 includes at least two mounting shafts 531. Two adjacent mounting shafts 531 along the deformation path of the intermediate structure 53 are connected by at least one intermediate rod 532. Each intermediate rod 532 is rotatably connected to its connected mounting shaft 531. The mounting shaft 531 at the bottom in the height direction of the fixture is fixedly connected to the bearing surface on which the fixture is placed, and the mounting shaft 531 at the top is fixedly connected to the base plate 4.

[0061] The axial direction of the mounting shaft 531 is the same as that of the first direction or the second direction.

[0062] It is understood that multiple intermediate rods 532 can be rotatably connected to a single mounting shaft 531, and these intermediate rods 532 can be distributed along the circumference of the mounting shaft 531. In this embodiment, to balance the weight distribution of the intermediate structure 53 and thus ensure its stability during deformation, each mounting shaft 531 is rotatably connected to one intermediate rod 532 at each end of its axial direction. Furthermore, it should be noted that the intermediate rods 532 on adjacent mounting shafts 531 are generally the same.

[0063] Reference is provided as an example, not a limitation. Figure 3 As shown, the intermediate structure 53 includes three mounting shafts 531, two of which are arranged linearly in the vertical direction, and each mounting shaft 531 has a middle rod 532 rotatably connected to both ends. The two middle rods 532 at the same end are rotatably connected through the remaining mounting shaft 531.

[0064] One of the two mounting shafts 531 arranged linearly in the vertical direction is fixed, and the other is fixedly connected to the base plate 4.

[0065] In this embodiment, one of the two mounting shafts 531 arranged linearly in the vertical direction is fixedly connected to the base 54, and the other is fixedly connected to the base plate 4.

[0066] By setting a rod-like structure similar to the lifting structure, the movement process of the intermediate structure 53 can be similar to that of the upgrading structure, so that the lifting speed of each part of the base plate 4 is the same and remains stable.

[0067] In some examples, refer to Figure 1 , Figure 2 and Figure 5 As shown, the lower surfaces of the first sliding plate 2 and the second sliding plate 3 are both provided with sliders 21, and the upper surfaces of the second sliding plate 3 and the base plate 4 are both provided with slides 31. Each slide 31 is provided with an elastic element 22 connected to the slider 21.

[0068] The elastic element 22 can be various springs and elastic columns, etc. In this embodiment, the spring is a columnar spring.

[0069] Understandably, the slider 21 can be moved manually or electrically.

[0070] Specifically, the elastic element 22 can be pre-tightened, and then the slider 21 can be pushed to move, thereby causing the structure connected to the slider 21 (specifically the first sliding plate 2 or the second sliding plate 3) to move smoothly and without gaps, thus achieving precise positioning of the needle in the horizontal direction.

[0071] Among them, "no gap" means that the minimum unit distance that the slider can move meets the adjustment requirements. For example, the slider can move within 0-10cm, and the minimum distance required for a single movement is 0.1mm. That is, the setting of the elastic element 22 can ensure that the slider 21 will not jump when moving under the same adjustment requirements, such as the situation where the slider moves 0.5cm once and then suddenly moves 2cm the second time.

[0072] Furthermore, in some examples, each slide 31 has an elastic element 22 symmetrically arranged about the slider 21.

[0073] By using elastic elements 22 symmetrically arranged about the slider 21, the preload force on the slider 21 is relatively uniform, thereby further improving the movement accuracy of the slider 21.

[0074] In some examples, mounting bases 32 are installed on the sides of the second sliding plate 3 and the base plate 4. Each mounting base 32 is threaded with a threaded rod 33, which extends inward along the corresponding slide rail 31 and abuts against the slider 21 inside the slide rail 31.

[0075] The threaded connection between the threaded rod 33 and the mounting base 32 can further improve the movement accuracy of the slider 21. At the same time, the manual adjustment method can reduce the complexity of the fixture, simplify the operation, and ensure the operation accuracy.

[0076] Furthermore, in some examples, refer to Figure 2 and Figure 5 As shown, each slide rail 31 is equipped with a guide seat 34, and the threaded rod 33 is threadedly connected to the guide seat 34. By adding the guide seat 34, the constraint on the threaded rod 33 is increased, thereby improving the transmission accuracy of the threaded rod 33 along the linear direction.

[0077] In some examples, refer to Figure 4 As shown, the adsorption platform 1 includes an adsorption disk 11 and a rotating assembly 12 located below the adsorption disk 11. The rotating assembly 12 is mounted on the first sliding plate 2 and is used to drive the adsorption disk 11 to rotate around the vertical axis.

[0078] The needle holder is attracted by the suction plate 11, and the rotating component 12 can rotate the suction plate 11, thereby driving the needle holder to rotate, so as to facilitate the operation of the probe by the needle changing tool.

[0079] The rotating component 12 can be driven by a motor or manually. In this embodiment, it is driven manually to simplify operation and fixture structure.

[0080] Reference Figure 4 As shown, the rotating assembly 12 generally includes a rotating rod 121, a seat 122, a base 123, and a rotating column 124 rotatably connected to the base 123. The adsorption disk 11 is mounted on the rotating seat, the seat 122 is mounted on the base 123, the rotating rod 121 is threadedly connected to the seat 122, and a passive part 125 is connected to the side of the rotating column 124. One end of the rotating rod 121 abuts against the passive part 125. By rotating the rotating rod 121, the passive part 125 is pushed to move, while the base 123 remains stationary, thereby driving the rotating column 124 to rotate, which in turn drives the adsorption disk 11 to rotate.

[0081] In some examples, refer to Figure 1As shown, a vacuum seat 6 is provided at the bottom of the base 54, and a cylinder is installed on the vacuum seat 6. A related pneumatic component is provided between the cylinder and the adsorption plate 11. The specific configuration is existing technology and will not be described in detail here.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A needle card adjustment jig, characterized by, The fixture includes an adsorption platform (1), a first sliding plate (2), a second sliding plate (3), a base plate (4), and a lifting assembly (5) arranged vertically from top to bottom. The adsorption platform (1) is mounted on the first sliding plate (2). The first sliding plate (2) is slidably disposed on the second sliding plate (3) along a first direction. The second sliding plate (3) is slidably disposed on the base plate (4) along a second direction. The first direction and the second direction are perpendicular to each other in the horizontal plane. The lifting assembly (5) includes an adjustment structure (51) and at least two sets of lifting brackets (52). The multiple sets of lifting brackets (52) are arranged linearly along one of the first direction and the second direction. Each set of lifting brackets (52) has a support surface (521) for supporting the base plate (4). The length direction of the support surface (521) extends along the other of the first direction and the second direction. The adjustment structure (51) includes a guide rod (511) and at least two moving parts (512) disposed on the guide rod (511). Each set of lifting brackets (52) is connected to each moving part (512) in a one-to-one correspondence. After the moving part (512) is driven by an external force, the moving part (512) moves along the guide rod (511) to drive the lifting bracket (52) connected to it to retract or expand, thereby driving the base plate (4) to move in the vertical direction.

2. The needle clip adjustment jig of claim 1, wherein The lifting assembly (5) also includes a base (54); Each set of lifting brackets (52) includes two connecting shafts (522), each connecting shaft (522) extends along the length direction of the lifting bracket (52), and the two connecting shafts (522) are arranged linearly in the vertical direction. The two connecting shafts (522) are fixedly connected to the base (54) and the base plate (4) respectively. The supporting surface (521) is provided on the surface of the connecting shaft (522) connected to the base plate (4); Each of the connecting shafts (522) is rotatably connected to both ends of a connecting rod (523). In each group of lifting brackets (52), the two connecting rods (523) at the same end are rotatably connected through an intermediate shaft (524). All the intermediate shafts (524) in each group of lifting brackets (52) are connected to the same moving part (512). The intermediate shafts (524) in each group of lifting brackets (52) are connected to their respective moving parts (512). After the guide rod (511) rotates under external force, the corresponding moving part (512) is driven by the guide rod (511) to move along the axial direction of the guide rod (511), so as to drive the connecting rod (523) to rotate relative to each other, so that the lifting bracket (52) connected to the moving part (512) that generates movement retracts or expands, thereby driving the base plate (4) to move in the vertical direction.

3. The needle clip adjustment jig of claim 2, wherein The guide rod (511) includes a bidirectional lead screw (5111) and a knob installed at the end of the bidirectional lead screw (5111). The two moving parts (512) are respectively installed on the left-hand threaded portion and the right-hand threaded portion of the bidirectional lead screw (5111).

4. The needle clip adjustment jig according to any one of claims 1 to 3, characterized by, The lifting assembly (5) also includes a deformable intermediate structure (53), which is disposed on one side of the lifting bracket (52) along the third direction. One end of the intermediate structure (53) along the vertical direction is fixed to the bearing surface on which the pin adjustment fixture is placed, and the other end is connected to the base plate (4). When the base plate (4) moves in the vertical direction, the intermediate structure (53) deforms accordingly. In the horizontal plane, the third direction is perpendicular to the arrangement direction of the lifting bracket (52).

5. The needle clip adjustment jig of claim 4, wherein, The intermediate structure includes at least two mounting shafts. Two adjacent mounting shafts along the deformation path of the intermediate structure are connected by at least one intermediate rod. Each intermediate rod is rotatably connected to the mounting shaft connected to it. The mounting shaft at the bottom of the fixture in the height direction is fixedly connected to the bearing surface on which the pin adjustment fixture is placed, and the mounting shaft at the top is fixedly connected to the base plate. Wherein, the axial direction of the mounting shaft is the same as that of the first direction or the second direction.

6. The needle clip adjustment jig of claim 1, wherein The lower surfaces of the first sliding plate (2) and the second sliding plate (3) are provided with sliders (21), and the upper surfaces of the second sliding plate (3) and the base plate (4) are provided with slides (31). Each slide (31) is provided with an elastic element (22) connected to the slider (21).

7. The needle clip adjustment jig of claim 6, wherein The elastic element (22) is symmetrically arranged about the slider (21) in each of the slides (31).

8. The needle clip adjustment jig of claim 6, wherein, The second sliding plate (3) and the bottom plate (4) are both equipped with mounting seats (32), and each mounting seat (32) is threaded with a threaded rod (33). The threaded rod (33) extends inward along the corresponding slide rail (31) and abuts against the slider (21) in the slide rail (31).

9. The needle clip adjustment jig of claim 8, wherein, Each of the slides (31) is provided with a guide seat (34), and the threaded rod (33) is threadedly connected to the guide seat (34).

10. The needle clip adjustment jig of claim 1, wherein, The adsorption platform (1) includes an adsorption disk (11) and a rotating component (12) located below the adsorption disk (11). The rotating component (12) is mounted on the first sliding plate (2) and is used to drive the adsorption disk (11) to rotate around a vertical axis.

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