A needle bender device for a probe card

Abstract

The utility model discloses a kind of bending needle machine equipment for probe card bending needle, including support plate, the top of the support plate is fixedly connected with workbench by support, the front side and the back side of the workbench top are all opened with through opening. The utility model adopts servo motor to drive positive and negative tooth screw rod rotation, can drive slider in sliding rail to move along through opening front and back, and further adjust the position of limiting plate on workbench, without manually repeatedly aligning the needle body of probe card, the reference position required by bending needle can be quickly determined, effectively avoid the tediousness of manual adjustment when placing needle body each time. At the same time, first electric telescopic rod can drive fixed frame and pressing wheel to move down stably, the rotation design of pressing wheel can reduce the friction damage to needle body in bending needle process, both ensure the stability and precision of bending needle operation, and improve overall processing efficiency, make bending needle operation more convenient and reliable, the device has the advantages of good positioning effect and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of probe card technology, specifically a needle bending machine for bending probe card needles. Background Technology

[0002] As a core component in the semiconductor testing field, the bending accuracy of the probes directly affects the stability and accuracy of the detection signals. In the probe card manufacturing process, precise bending of the probes at specific locations is required according to testing needs; therefore, the needle bending machine is a critical processing device.

[0003] The processing flow of existing needle bending machines is usually as follows: place the needle body of the probe card on the workbench surface, manually calibrate the bending reference position of the needle body, and then activate the pressing structure to apply pressure to the target position of the needle body to complete the bending.

[0004] However, this type of equipment has significant technical limitations: First, the needle length, bending angle and bending point of different models of probe cards are different. Existing equipment lacks an adaptable automatic positioning mechanism. Before each processing, the operator needs to manually measure and align the bending baseline of the needle body with tools such as rulers and calipers. This not only takes up a lot of calibration time, but is also prone to deviation of the reference position due to human visual error and hand shaking. Secondly, the needle body needs to be kept in the middle of the worktable or in the preset constraint area to ensure that the pressure roller applies force evenly. However, the existing equipment relies on manual straightening of the needle body. During the processing, the needle body is easily deflected by the force of the pressure roller, which can lead to problems such as bending position deviation, needle body deformation or even breakage. Especially in batch processing scenarios, the consistency of manual positioning is poor, resulting in large fluctuations in the qualified rate of probe card products. In summary, existing equipment for bending probe cards lacks "automatic positioning and rapid adaptation" limiting and processing auxiliary structures, making it difficult to meet the high-precision and high-efficiency bending requirements of probe cards. There is an urgent need to optimize and improve the positioning and processing mechanisms of the equipment. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a needle bending machine for probe card bending, which has the advantages of good positioning effect and ease of use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a needle bending machine for probe card bending, comprising a support plate, a worktable fixedly connected to the top of the support plate via a bracket, openings on the front and rear sides of the top of the worktable, a slide rail fixedly connected to the top of the support plate, sliders slidably connected to the front and rear sides of the slide rail, a threaded rod rotatably connected inside the slide rail, the threaded rod being threadedly connected to the slider, a servo motor fixedly connected to the front of the slide rail, the output end of the servo motor being fixedly connected to the threaded rod, a limiting plate fixedly connected to the top of the slider extending through the opening to the top of the worktable, the limiting plate fitting against the worktable, a support frame fixedly connected to the back of the top of the worktable, a first electric telescopic rod fixedly connected to the top of the support frame, a fixed frame fixedly connected to the output end of the first electric telescopic rod, and a pressing wheel rotatably connected inside the fixed frame.

[0007] As a preferred embodiment of this utility model, a limiting rod is fixedly connected to both the front and rear sides of the top of the fixing frame, the top of the limiting rod extends to the top of the support frame, and the limiting rod is slidably connected to the support frame.

[0008] As a preferred embodiment of this utility model, both sides of the top of the workbench are provided with sliding grooves, and movable blocks are slidably connected to the inside of the sliding grooves. Clamping blocks are fixedly connected to the adjacent side of the two movable blocks. A screw is threadedly connected to the inside of the movable block. The bottom of the screw fits against the top of the workbench, and a rotating handle is fixedly connected to the top of the screw.

[0009] As a preferred embodiment of this utility model, a pointer is fixedly connected to the front of the movable block, and a scale line is sprayed on the top of the worktable, which is used in conjunction with the pointer.

[0010] In a preferred embodiment of this utility model, a fixing plate is fixedly connected inside the slide rail, a second electric telescopic rod is fixedly connected to the top of the fixing plate, a lifting plate is fixedly connected to the top of the second electric telescopic rod, and an opening is provided at the center of the top of the workbench, which is used in conjunction with the lifting plate.

[0011] In a preferred embodiment of this utility model, movable columns are fixedly connected to all four sides of the bottom of the support plate, and support columns are slidably connected to the surfaces of the movable columns. A connecting frame is fixedly connected to the surface of the support columns, and a third electric telescopic rod is fixedly connected to the top of the connecting frame. The output end of the third electric telescopic rod is fixedly connected to the bottom of the support plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a servo motor to drive the positive and negative threaded rod to rotate, which can drive the slider in the slide rail to move back and forth along the through-hole, thereby adjusting the position of the limiting plate on the worktable. It eliminates the need for manual and repeated alignment of the probe card's needle body, quickly determining the required reference position for bending the needle and effectively avoiding the tedious manual adjustment each time the needle body is placed. Simultaneously, the first electric telescopic rod can drive the fixing frame and pressing wheel to move stably downwards. The rotation design of the pressing wheel reduces frictional damage to the needle body during bending, ensuring both the stability and accuracy of the bending operation and improving overall processing efficiency, making bending needle operations more convenient and reliable. This device has the advantages of good positioning effect and ease of use.

[0013] 2. This utility model utilizes a limiting rod on the fixed frame that slidably connects to the support frame. This precise guidance of the fixed frame's movement trajectory, achieved when the first electric telescopic rod moves the fixed frame up and down, effectively prevents the fixed frame from shifting or wobbling due to uneven force. This ensures that the pressing wheel is always accurately aligned with the bent needle part of the needle body, avoiding misalignment and reducing defective products. Simultaneously, the supporting function of the limiting rod enhances the stability of the fixed frame during movement, reduces the stress on the first electric telescopic rod, extends the service life of related components, and makes the bent needle operation more reliable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the slide rail and slider structure of this utility model; Figure 3 This is a schematic diagram of the movable block and clamping block structure of this utility model; Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Support plate; 2. Workbench; 3. Slide rail; 4. Slider; 5. Through port; 6. Servo motor; 7. Limit plate; 8. Support frame; 9. First electric telescopic rod; 10. Fixed frame; 11. Pressing wheel; 12. Limit rod; 13. Fixed plate; 14. Second electric telescopic rod; 15. Lifting plate; 16. Movable block; 17. Clamping block; 18. Screw; 19. Rotary handle; 20. Pointer; 21. Movable column; 22. Support column; 23. Connecting frame; 24. Third electric telescopic rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 4 As shown, a needle bending machine for probe card bending includes a support plate 1. A worktable 2 is fixedly connected to the top of the support plate 1 via a bracket. Openings 5 ​​are provided on the front and rear sides of the top of the worktable 2. A slide rail 3 is fixedly connected to the top of the support plate 1. Slider 4 is slidably connected to the front and rear sides of the slide rail 3. A threaded rod with positive and negative threads is rotatably connected inside the slide rail 3, and the threaded rod is threadedly connected to the slider 4. A servo motor 6 is fixedly connected to the front of the slide rail 3, and the output end of the servo motor 6 is fixedly connected to the threaded rod. A limiting plate 7 is fixedly connected to the top of the slider 4 through the opening 5 and extending above the worktable 2. The limiting plate 7 fits against the worktable 2. A support frame 8 is fixedly connected to the back of the top of the worktable 2. A first electric telescopic rod 9 is fixedly connected to the top of the support frame 8. The output end of 9 is fixedly connected to a fixing frame 10. A pressing wheel 11 is rotatably connected inside the fixing frame 10. In actual use, a retractable protective sleeve is fitted on the surface of the positive and negative thread rod to prevent debris or impurities from adhering to the surface of the positive and negative thread rod. The retractable protective sleeve is not shown. All standard parts used in this utility model can be purchased from the market. Special-shaped parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification are prior art known to those skilled in the art, and this application will not describe them in detail.

[0018] refer to Figure 1 Limiting rods 12 are fixedly connected to the front and rear sides of the top of the fixed frame 10. The top of the limiting rods 12 extends above the support frame 8, and the limiting rods 12 are slidably connected to the support frame 8.

[0019] As a technical optimization of this utility model, the limiting rod 12 on the fixed frame 10 is slidably connected to the support frame 8. This allows for precise guidance of the fixed frame 10's movement trajectory when the first electric telescopic rod 9 moves the fixed frame 10 up and down, effectively preventing the fixed frame 10 from shifting or shaking due to uneven force. This ensures that the pressing wheel 11 is always accurately aligned with the bent needle part of the needle body, avoiding deviation in the bent needle position and reducing defective products. Simultaneously, the supporting function of the limiting rod 12 enhances the stability of the fixed frame 10 during movement, reduces the stress on the first electric telescopic rod 9, extends the service life of related components, and makes the bent needle operation more reliable.

[0020] refer to Figure 4 Both sides of the top of the workbench 2 are provided with sliding grooves, and movable blocks 16 are slidably connected to the inside of the sliding grooves. Clamping blocks 17 are fixedly connected to the adjacent side of the two movable blocks 16. Screws 18 are threadedly connected to the inside of the movable blocks 16. The bottom of the screws 18 fits against the top of the workbench 2, and a rotating handle 19 is fixedly connected to the top of the screws 18.

[0021] As a technical optimization of this utility model, the movable block 16 within the slide groove of the worktable 2 can move left and right, easily adapting to probe cards of different sizes without the need to change special fixtures, significantly improving the equipment's adaptability to probe cards of different specifications. The clamping block 17 firmly fixes the probe card, preventing displacement during the bending process and ensuring the accuracy of the bending position. The entire clamping operation requires no complex tools, and the steps are simple and easy to understand. Even less experienced operators can quickly master it, effectively saving adjustment time when changing workpieces and improving processing efficiency. When the movable block 16 moves to the preset position, the operator rotates the screw 18, making the bottom of the screw 18 fit tightly against the top of the worktable 2.

[0022] refer to Figure 4 The front of the movable block 16 is fixedly connected to the pointer 20, and the top of the worktable 2 is sprayed with scale lines, which are used in conjunction with the pointer 20.

[0023] As a technical optimization of this utility model, the pointer 20 on the movable block 16, in conjunction with the scale lines on the worktable 2, can intuitively display the specific position of the clamping block 17. Operators can accurately control the movement distance of the clamping block 17 without relying on subjective judgment or additional measuring tools when adjusting it. This ensures consistent clamping positions each time when batch processing probe cards of the same specifications, thereby guaranteeing uniform pin positions for all probe cards and significantly improving product consistency and accuracy. Simultaneously, the clear scale lines and pointer 20 facilitate operators in recording and adjusting processing parameters, providing convenience for subsequent process optimization and reducing processing errors caused by positional deviations.

[0024] refer to Figure 2 The slide rail 3 is internally fixedly connected to a fixed plate 13. The top of the fixed plate 13 is fixedly connected to a second electric telescopic rod 14. The top of the second electric telescopic rod 14 is fixedly connected to a lifting plate 15. An opening is provided at the center of the top of the workbench 2, and the opening is used in conjunction with the lifting plate 15.

[0025] As a technical optimization of this utility model, the second electric telescopic rod 14 in the slide rail 3 can drive the lifting plate 15 to move up and down along the opening of the worktable 2. After the probe card is processed, the lifting plate 15 can lift the probe card from the worktable 2, so as to avoid the probe card being difficult to remove because it is tightly attached to the worktable 2 after processing, and effectively reduce the damage to the probe card when manually picking it up and putting it down.

[0026] refer to Figure 1 Movable columns 21 are fixedly connected to the bottom of the support plate 1 around its four sides. Support columns 22 are slidably connected to the surface of the movable columns 21. Connecting frames 23 are fixedly connected to the surface of the support columns 22. A third electric telescopic rod 24 is fixedly connected to the top of the connecting frames 23. The output end of the third electric telescopic rod 24 is fixedly connected to the bottom of the support plate 1.

[0027] As a technical optimization of this utility model, the movable column 21 at the bottom of the support plate 1 can slide up and down within the support column 22. The extension and retraction of the third electric telescopic rod 24 can adjust the height of the support plate 1 and the entire workbench 2, allowing for flexible adaptation to the operator's height or the height of surrounding equipment. This enables the operator to perform needle bending operations in a more comfortable posture, reducing fatigue from prolonged operation. The connecting frame 23, by connecting to the support column 22, enhances the stability of the support structure and prevents the equipment from shaking during height adjustment. This height adjustment function eliminates the need for manual padding or disassembly of parts, making operation convenient, significantly expanding the equipment's application scenarios, and improving overall operational comfort and flexibility.

[0028] The working principle and usage process of this utility model: When using it, before starting the equipment, you need to check the connection status of each component to ensure that the support plate 1, workbench 2, support frame 8 and other structures are not loose, that there are no foreign objects inside the slide rail 3 that obstruct the movement of the slider 4, and that the pressing wheel 11 rotates flexibly and is not damaged.

[0029] Next, adjust the limiting plate 7 according to the required bent needle position of the probe card body, start the servo motor 6 on the front of the slide rail 3, the output end of the servo motor 6 drives the positive and negative threaded rod inside the slide rail 3 to rotate, the slider 4 connected to the positive and negative threaded rod slides along the slide rail 3, the front and rear sliders 4 move closer to each other, the top of the slider 4 passes through the through 5 of the worktable 2 and drives the limiting plate 7 to move synchronously, observe the position of the limiting plate 7 until it matches the reference position of the bent needle of the probe card body, and then limit the front and rear position of the probe card, and turn off the servo motor 6 to keep the limiting plate 7 fixed. Next, place the probe card between the two limiting plates 7 at the top of the workbench 2. Push the movable block 16 in the slide groove of the workbench 2. The movable block 16 drives the clamping block 17 to move closer to both sides of the probe card. During the process, observe the correspondence between the pointer 20 on the front of the movable block 16 and the scale line on the top of the workbench 2 to ensure that the spacing of the clamping block 17 is compatible with the size of the probe card. After the clamping block 17 is in contact with the probe card, rotate the handle 19 at the top of the movable block 16. The handle 19 drives the screw 18 to move downward until the bottom of the screw 18 is in close contact with the top of the workbench 2. The position of the movable block 16 is fixed by the compression of the screw 18, thereby making the clamping block 17 firmly fix the probe card and prevent the probe card from shifting in subsequent operations. Next, the needle bending operation is performed. The first electric telescopic rod 9 at the top of the support frame 8 is activated. The output end of the first electric telescopic rod 9 drives the fixed frame 10 downwards. The limiting rod 12 at the top of the fixed frame 10 slides along the inner wall of the support frame 8 to ensure the stability of the fixed frame 10's movement trajectory. The pressing wheel 11 inside the fixed frame 10 moves downwards with the fixed frame 10 until it contacts the part of the probe card needle body that needs bending. The first electric telescopic rod 9 is then controlled to push the pressing wheel 11. The pressing wheel 11 rotates under the pressure of the needle body and presses and bends the needle body until the needle body reaches the preset bending angle. Then, the pressing wheel 11 is adjusted to move upwards and reset. Finally, the second electric telescopic rod 14 at the top of the fixed plate 13 inside the slide rail 3 is activated. The output end of the second electric telescopic rod 14 drives the lifting plate 15 upwards. The lifting plate 15 passes through the opening in the center of the worktable 2 and lifts the completed probe card, allowing the operator to easily remove the probe card and complete a single needle bending operation. The above steps can be repeated to perform needle bending processing on the next probe card.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A needle bending machine for probe card bending, comprising a support plate (1), characterized in that: The top of the support plate (1) is fixedly connected to a workbench (2) via a bracket. The workbench (2) has openings (5) on both the front and rear sides of its top. A slide rail (3) is fixedly connected to the top of the support plate (1). Slider blocks (4) are slidably connected to the front and rear sides of the slide rail (3). A threaded rod with both positive and negative threads is rotatably connected inside the slide rail (3). The threaded rod is threaded to the slider (4). A servo motor (6) is fixedly connected to the front of the slide rail (3). The servo motor (6) outputs... The output end is fixedly connected to the positive and negative threaded rod. The top of the slider (4) passes through the through-hole (5) and extends to the top of the workbench (2) and is fixedly connected to the limiting plate (7). The limiting plate (7) is in contact with the workbench (2). The back of the top of the workbench (2) is fixedly connected to the support frame (8). The top of the support frame (8) is fixedly connected to the first electric telescopic rod (9). The output end of the first electric telescopic rod (9) is fixedly connected to the fixing frame (10). The inside of the fixing frame (10) is rotatably connected to the pressing wheel (11).

2. The bending machine for probe card bending needles according to claim 1, characterized in that: Limiting rods (12) are fixedly connected to the front and rear sides of the top of the fixed frame (10). The top of the limiting rods (12) extends above the support frame (8), and the limiting rods (12) are slidably connected to the support frame (8).

3. The bending machine for probe card bending needles according to claim 2, characterized in that: The top of the workbench (2) is provided with sliding grooves on both sides, and movable blocks (16) are slidably connected to the inside of the sliding grooves. Clamping blocks (17) are fixedly connected to the adjacent side of the two movable blocks (16). A screw (18) is threadedly connected to the inside of the movable block (16). The bottom of the screw (18) is in contact with the top of the workbench (2), and a rotating handle (19) is fixedly connected to the top of the screw (18).

4. The bending machine for probe card bending needles according to claim 3, characterized in that: The front of the movable block (16) is fixedly connected to a pointer (20), and the top of the workbench (2) is sprayed with scale lines, which are used in conjunction with the pointer (20).

5. The bending machine for probe card bending needles according to claim 4, characterized in that: The slide rail (3) is fixedly connected to a fixed plate (13), and a second electric telescopic rod (14) is fixedly connected to the top of the fixed plate (13). A lifting plate (15) is fixedly connected to the top of the second electric telescopic rod (14). An opening is provided at the center of the top of the workbench (2), and the opening is used in conjunction with the lifting plate (15).

6. The bending machine for probe card bending needles according to claim 5, characterized in that: Movable columns (21) are fixedly connected to the bottom of the support plate (1) around its perimeter. Support columns (22) are slidably connected to the surface of the movable columns (21). A connecting frame (23) is fixedly connected to the surface of the supporting columns (22). A third electric telescopic rod (24) is fixedly connected to the top of the connecting frame (23). The output end of the third electric telescopic rod (24) is fixedly connected to the bottom of the support plate (1).

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