Equipment for detecting strength of gold bonding wire
By designing a motor-driven winding mechanism and a hydraulic-driven detection frame, combined with a synchronously rotating drive wheel, the problems of low detection efficiency and inaccurate results of bonded wires in the prior art are solved, and efficient and accurate detection of gold wire strength is achieved.
Patent Information
- Application Number
- CN202420824436.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-19
AI Technical Summary
In the prior art, the detection efficiency of bonded wires is low and the detection results are inaccurate, mainly because the clamping method of welding joints affects efficiency and accuracy, and manual winding can easily lead to deviation of the tensile direction.
A bonded wire strength detection device is designed, and the gold wire is uniformly wound and fixed by a motor-driven winding mechanism. Combined with a hydraulically driven detection frame and a synchronously rotating drive wheel, it ensures the accuracy of the position of both ends of the gold wire when stretching.
It improves the efficiency and accuracy of bonded wire detection, avoids position deviation at both ends when gold wire is stretched, reduces detection cost, and improves detection convenience.
Smart Images
Figure CN222761961U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gold bonding wire detection, in particular to a gold bonding wire strength detection device. Background Art
[0002] As the main connecting material between chips and external circuits, gold bonding wire has good corrosion resistance, good conductivity, and can achieve extremely high bonding speed. It is widely used in semiconductor and microelectronics industries. As an important raw material, gold bonding wire must have several important characteristics, good mechanical properties and electrical conductivity, appropriate destructive force, correct size, clean surface without pollution and damage. Therefore, it is extremely important to detect whether the strength of the gold bonding wire meets the requirements.
[0003] When testing the bonded gold wire, usually the two ends of the gold wire are fixed and then stretched. However, in the prior art, before stretching the gold wire, joints are mainly welded at both ends of the gold wire and then clamped and fixed. This method not only affects the detection efficiency of the gold wire, but also increases the cost of gold wire detection. In addition, there are certain requirements for the length of the gold wire to be detected; or the two ends of the gold wire are manually wound, which easily causes the stretching direction of the gold wire to shift, affects the result of the gold wire strength detection, and reduces the convenience of gold wire detection. Utility Model Content
[0004] The utility model aims to solve the problems of low detection efficiency and inaccurate detection results in the prior art, and proposes a bonding gold wire strength detection device.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A bonding gold wire strength detection device comprises a mounting seat, and also comprises: a winding mechanism fixedly connected to the mounting seat, the winding mechanism is used to fix and wind the bonding gold wire, the mounting seat is fixedly connected to a motor, the output end of the motor is connected to the winding mechanism, the mounting seat is fixedly connected to two groups of hydraulic rods, the two groups of hydraulic rods are slidably connected to a detection frame, and the side of the detection frame close to the mounting seat is also fixedly connected to the winding mechanism; a driving wheel rotatably connected to the side wall of the winding mechanism, the mounting seat is fixedly connected to two groups of positioning frames, the positioning frame is rotatably connected to a tensioning mechanism, the tensioning mechanism is at least partially sleeved with the two groups of driving wheels, and the tensioning mechanism is used to drive the two groups of driving wheels to rotate synchronously.
[0007] In order to facilitate more uniform winding of the bonding gold wire, preferably, the winding mechanism includes a fixed plate fixedly connected to the mounting seat, a connecting shaft is rotatably connected to the inner wall of the fixed plate, one of the connecting shafts passes through the fixed plate and is connected to the output end of the motor, one end of the connecting shafts close to each other is fixedly connected to a winding frame, and the side of the winding frame close to each other is fixedly connected to a first winding roller.
[0008] In order to facilitate the fixation of the end of the bonding gold wire, preferably, a groove is opened on the side where the winding frame is close to each other, a slider is slidably connected inside the groove, an adjusting rod is fixedly connected to the outer wall of the slider, a return spring is fixedly connected between the inner wall of the groove and the slider, the return spring is sleeved on the outside of the adjusting rod, and a second winding roller is fixedly connected between the two groups of sliders.
[0009] In order to facilitate the synchronous rotation of the two driving wheels, preferably, the tensioning mechanism includes a receiving rod rotatably connected to the positioning frame, the end of the receiving rod is rotatably connected to a guide wheel, a tensioning spring is fixedly connected between the receiving rod and the mounting seat, and a belt is sleeved on the outside of the guide wheel and the driving wheel.
[0010] In order to facilitate more stable fixation of the end of the bonding gold wire, further, one end of the groove is close to the first winding roller, and the adjustment rod is located at the end of the slider away from the first winding roller.
[0011] In order to facilitate the staff to place the end of the bonding gold wire, further, the end of the adjustment rod away from the slider at least partially extends to the outside of the winding frame, and the adjustment rod is slidably connected to the winding frame.
[0012] In order to prevent the bonding gold wire from being separated during winding, preferably, the sizes of the first winding roller and the second winding roller match, and the surfaces of the first winding roller and the second winding roller are concave-convex.
[0013] In order to stretch the bonding gold wire, preferably, a hydraulic driving device is provided inside the detection frame, and the hydraulic driving device is used to drive the detection frame to move on the hydraulic rod.
[0014] In order to accurately record the strength data of the bonding gold wire during testing, further, it also includes a testing box fixedly connected to the testing frame, and the testing box includes a sensor, a testing device and a connecting piece.
[0015] In order to ensure the stable rotation of the two driving wheels, further, the tensioning spring is always in a tensioned state, the end of the receiving rod close to the guide wheel is hollow, and the belt passes through the hollow part of the receiving rod.
[0016] Compared with the prior art, the utility model provides a bonding wire strength detection device, which has the following beneficial effects:
[0017] 1. The bonding gold wire strength detection device can evenly wind the bonding gold wire by driving the winding frame, the first winding roller and the second winding roller to rotate through a motor, so as to achieve the effect of fixing the end of the bonding gold wire. In addition, the winding frame can also prevent the bonding gold wire from deviating.
[0018] 2. The bonding wire strength detection device can adjust the distance between the first winding roller and the second winding roller by pulling the adjustment rod, so as to facilitate the placement of the end of the bonding wire. Then, under the action of the reset spring, the first winding roller and the second winding roller can be brought close to each other, thereby fixing the end of the bonding wire, thereby improving the convenience of bonding wire detection.
[0019] 3. The bonding gold wire strength testing equipment can make the two sets of winding mechanisms rotate synchronously through the driving wheel and the tensioning mechanism, thereby avoiding the position deviation of the two ends of the bonding gold wire during stretching, thereby ensuring the accuracy of the bonding gold wire testing results.
[0020] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can overcome the problems of low efficiency of bonding wire detection, poor accuracy of detection results, and low detection convenience. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the structure of a bonding wire strength detection device proposed by the utility model Figure 1 ;
[0022] Figure 2 This is a schematic diagram of the structure of a bonding wire strength detection device proposed by the utility model Figure 2 .
[0023] Figure 3 This is a schematic diagram of part of the structure of a bonding wire strength detection device proposed by the utility model Figure 1 .
[0024] Figure 4 This is a schematic diagram of part of the structure of a bonding wire strength detection device proposed by the utility model Figure 2 .
[0025] Figure 5 The utility model discloses a structural schematic diagram of a winding frame in a bonding gold wire strength detection device.
[0026] In the figure: 1. mounting base; 2. fixing plate; 3. motor; 4. connecting shaft; 5. winding frame; 6. first winding roller; 7. groove; 8. slider; 9. adjusting rod; 10. reset spring; 11. second winding roller; 12. hydraulic rod; 13. detection frame; 14. detection box; 15. positioning frame; 16. receiving rod; 17. guide wheel; 18. tensioning spring; 19. driving wheel; 20. belt. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0029] Example:
[0030] Reference Figure 1-5 A bonding gold wire strength detection device comprises a mounting base 1, and also comprises: a winding mechanism fixedly connected to the mounting base 1, the winding mechanism is used to fix and wind the bonding gold wire, a motor 3 is fixedly connected to the mounting base 1, and the output end of the motor 3 is connected to the winding mechanism, two groups of hydraulic rods 12 are fixedly connected to the mounting base 1, and a detection frame 13 is slidably connected to the two groups of hydraulic rods 12. When the bonding gold wire is detected, the detection frame 13 will move upward along the hydraulic rods 12, thereby stretching the bonding gold wire, and the winding mechanism is also fixedly connected to the side of the detection frame 13 close to the mounting base 1; a driving wheel 19 rotatably connected to the side wall of the winding mechanism, two groups of positioning frames 15 are fixedly connected to the mounting base 1, and a tensioning mechanism is rotatably connected to the positioning frame 15, and the tensioning mechanism is at least partially sleeved with the two groups of driving wheels 19, and the tensioning mechanism is used to drive the two groups of driving wheels 19 to rotate synchronously.
[0031] Reference Figure 1 and Figure 4The winding mechanism includes a fixed plate 2 fixedly connected to the mounting base 1, and a connecting shaft 4 is rotatably connected to the inner wall of the fixed plate 2, one of the connecting shafts 4 passes through the fixed plate 2 and is connected to the output end of the motor 3, and a winding frame 5 is fixedly connected to one end of the connecting shaft 4 close to each other, and a first winding roller 6 is fixedly connected to the side of the winding frame 5 close to each other. The specific structure of the motor 3 can refer to the technical scheme in the prior art, and technicians in this field can know it, which will not be repeated here. The winding frame 5 and the first winding roller 6 are driven to rotate by the motor 3, so as to realize the winding of the bonding gold wire.
[0032] Reference Figure 4 and Figure 5 A groove 7 is provided on one side of the winding frame 5 where they are close to each other, and a slider 8 is slidably connected inside the groove 7. An adjusting rod 9 is fixedly connected to the outer wall of the slider 8, and a return spring 10 is fixedly connected between the inner wall of the groove 7 and the slider 8. The return spring 10 is sleeved on the outside of the adjusting rod 9, and a second winding roller 11 is fixedly connected between the two groups of sliders 8. When it is necessary to install the end of the bonding gold wire, the staff pulls the adjusting rod 9 outward. At this time, the distance between the second winding roller 11 and the first winding roller 6 increases, and then the staff can place the end of the bonding gold wire between the first winding roller 6 and the second winding roller 11, and then release the adjusting rod 9, and the slider 8 and the second winding roller 11 will move to the initial position under the action of the return spring 10, thereby fixing the bonding gold wire between the first winding roller 6 and the second winding roller 11.
[0033] Reference Figure 2 and Figure 3 The tensioning mechanism includes a receiving rod 16 rotatably connected to the positioning frame 15, and the end of the receiving rod 16 is rotatably connected to a guide wheel 17. A tensioning spring 18 is fixedly connected between the receiving rod 16 and the mounting seat 1, and a belt 20 is sleeved on the outside of the guide wheel 17 and the driving wheel 19. When the strength of the bonding gold wire is tested, the distance between the two sets of driving wheels 19 will change. If the distance between the two sets of driving wheels 19 increases, the two sets of receiving rods 16 will be driven to rotate relative to each other. If the distance between the two sets of driving wheels 19 decreases, the tensioning spring 18 will drive the two sets of receiving rods 16 to rotate towards each other, thereby ensuring that the belt 20 is always in close contact with the driving wheel 19 and the guide wheel 17, so that the two sets of driving wheels 19 can rotate synchronously.
[0034] Reference Figure 4 and Figure 5 One end of the groove 7 is close to the first winding roller 6, and the adjusting rod 9 is located at the end of the slider 8 away from the first winding roller 6, so as to facilitate the adjustment of the distance between the first winding roller 6 and the second winding roller 11.
[0035] Reference Figure 5The end of the adjusting rod 9 away from the slider 8 at least partially extends to the outside of the winding frame 5, and the adjusting rod 9 is slidably connected to the winding frame 5. When the staff places the bonding gold wire, they can adjust the length of the adjusting rod 9 to facilitate the placement of the bonding gold wire, which makes the operation simpler.
[0036] Reference Figure 4 and 5 The sizes of the first winding roller 6 and the second winding roller 11 match, and the surfaces of the first winding roller 6 and the second winding roller 11 are concave and convex, which can increase the friction between the bonding gold wire and the first winding roller 6 and the second winding roller 11, thereby improving the stability of the bonding gold wire during winding. It should be explained that the sizes of the first winding roller 6 and the second winding roller 11 only need to be slightly larger than the sizes of the bonding gold wire, which can further ensure the verticality of the bonding gold wire during detection.
[0037] Reference Figure 1 and Figure 2 A hydraulic driving device is provided inside the detection frame 13, and the hydraulic driving device is used to drive the detection frame 13 to move on the hydraulic rod 12. The specific structure of the hydraulic driving device can refer to the technical scheme in the prior art. Those skilled in the art can know it and will not be elaborated here. As long as the detection frame 13 can be moved on the hydraulic rod 12, it can also be achieved by using a cylinder or the like.
[0038] Reference Figure 1 and Figure 2 , and also includes a detection box 14 fixedly connected to the detection frame 13, the detection box 14 includes sensors, detection equipment and connecting parts. The specific equipment in the detection box 14 are all conventional means in the prior art, including stress analysis of the bonding wire when it is stretched, data transmission, data processing and connecting parts required for the connection between various components, which are not elaborated here. It needs to be explained that the sensor can be set on the first winding roller 6 and the second winding roller 11, and the force exerted on the bonding wire is recorded by recording the pressure received by the first winding roller 6 and the second winding roller 11 (that is, the difference between the force exerted on the bonding wire when it is just in a stretched state and the force exerted on the bonding wire when it is broken).
[0039] Reference Figure 3 The tensioning spring 18 is always in a tensioned state, the end of the receiving rod 16 close to the guide wheel 17 is hollow, and the belt 20 passes through the hollow part of the receiving rod 16. The tensioning state of the tensioning spring 18 can make the belt 20 always fit tightly with the guide wheel 17 and the driving wheel 19, thereby realizing the synchronous rotation of the two sets of driving wheels 19.
[0040] In the utility model, when the strength of the bonded gold wire is tested, the staff pulls the adjusting rod 9 outward, at which time the second winding roller 11 will be away from the first winding roller 6, and then the bonded gold wire can be placed between the first winding roller 6 and the second winding roller 11, and the adjusting rod 9 is loosened, and the second winding roller 11 will be tightly fitted with the first winding roller 6 under the action of the reset spring 10, so as to fix the bonded gold wire, and then the motor 3 is driven to drive the first winding roller 6 and the second winding roller 11 to rotate, and the bonded gold wire is wound, thereby improving the convenience of the bonded gold wire detection; wherein, when the motor 3 rotates, under the action of the belt 20, the receiving rod 16, the tensioning spring 18 and the guide wheel 17, the two sets of driving wheels 19 will rotate synchronously, that is, the winding direction and position of the bonded gold wire are the same, so that the direction of the two ends of the bonded gold wire can be avoided from being offset during the detection, thereby ensuring the accuracy of the bonded gold wire strength detection result, and there is basically no requirement for the length of the bonded gold wire to be detected, and secondly, the change in the position of the detection frame 13 will not affect the synchronous rotation of the two driving wheels 19.
[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A bonding wire strength testing device, comprising a mounting seat (1), characterized in that: Also includes: A winding mechanism fixedly connected to the mounting seat (1), the winding mechanism being used to fix and wind the bonding gold wire, the mounting seat (1) being fixedly connected to a motor (3), the output end of the motor (3) being connected to the winding mechanism, the mounting seat (1) being fixedly connected to two groups of hydraulic rods (12), the two groups of hydraulic rods (12) being slidably connected to a detection frame (13), and the detection frame (13) being also fixedly connected to a winding mechanism on a side close to the mounting seat (1); A driving wheel (19) is rotatably connected to the side wall of the winding mechanism, two groups of positioning frames (15) are fixedly connected to the mounting seat (1), a tensioning mechanism is rotatably connected to the positioning frame (15), and the tensioning mechanism is at least partially sleeved with the two groups of driving wheels (19), and the tensioning mechanism is used to drive the two groups of driving wheels (19) to rotate synchronously.
2. A bonding wire strength detection device according to claim 1, characterized in that: The winding mechanism comprises a fixed plate (2) fixedly connected to the mounting seat (1); a connecting shaft (4) is rotatably connected to the inner wall of the fixed plate (2); one of the connecting shafts (4) passes through the fixed plate (2) and is connected to the output end of the motor (3); a winding frame (5) is fixedly connected to one end of the connecting shaft (4) close to each other; and a first winding roller (6) is fixedly connected to one side of the winding frame (5) close to each other.
3. A bonding wire strength detection device according to claim 2, characterized in that: A groove (7) is provided on one side of the winding frame (5) close to each other, a slider (8) is slidably connected inside the groove (7), an adjusting rod (9) is fixedly connected to the outer wall of the slider (8), a return spring (10) is fixedly connected between the inner wall of the groove (7) and the slider (8), the return spring (10) is sleeved on the outside of the adjusting rod (9), and a second winding roller (11) is fixedly connected between the two groups of sliders (8).
4. The bonding wire strength detection device according to claim 1, characterized in that: The tensioning mechanism comprises a receiving rod (16) rotatably connected to the positioning frame (15), the end of the receiving rod (16) is rotatably connected to a guide wheel (17), a tensioning spring (18) is fixedly connected between the receiving rod (16) and the mounting seat (1), and a belt (20) is sleeved on the outside of the guide wheel (17) and the driving wheel (19).
5. The bonding wire strength detection device according to claim 3, characterized in that: One end of the groove (7) is close to the first winding roller (6), and the adjustment rod (9) is located at the end of the slider (8) away from the first winding roller (6).
6. The bonding wire strength detection device according to claim 3, characterized in that: One end of the adjusting rod (9) away from the sliding block (8) at least partially extends to the outside of the winding frame (5), and the adjusting rod (9) is slidably connected to the winding frame (5).
7. The bonding wire strength detection device according to claim 3, characterized in that: The sizes of the first winding roller (6) and the second winding roller (11) match each other, and the surfaces of the first winding roller (6) and the second winding roller (11) are concave-convex.
8. The bonding wire strength testing device according to claim 1, characterized in that: A hydraulic drive device is arranged inside the detection frame (13), and the hydraulic drive device is used to drive the detection frame (13) to move on the hydraulic rod (12).
9. The bonding wire strength detection device according to claim 1, characterized in that: It also comprises a detection box (14) fixedly connected to the detection frame (13), wherein the detection box (14) comprises a sensor, a detection device and a connecting piece.
10. The bonding wire strength detection device according to claim 4, characterized in that: The tension spring (18) is always in a tensioned state, one end of the receiving rod (16) close to the guide wheel (17) is hollow, and the belt (20) passes through the hollow part of the receiving rod (16).