Supporting adsorption platform of push-pull force machine

Abstract

The utility model relates to the technical field of semiconductor packaging testing, in particular to a supporting adsorption platform of a push-pull force machine, which comprises a main supporting plate, auxiliary supporting plates for further supporting a lead frame are fixedly mounted on two sides of the main supporting plate, and a fixing adsorption mechanism for fixing the lead frame is arranged in an inner cavity of the main supporting plate. The fixed adsorption mechanism comprises a plurality of vacuum suction nozzles slidably connected to an inner cavity of the main supporting plate, through holes matched with the vacuum suction nozzles are formed in the top face of the main supporting plate in a penetrating mode, and pressing plates in one-to-one correspondence with the vacuum suction nozzles are connected to the upper portions of the vacuum suction nozzles in a floating mode. According to the utility model, through the relative movement of the sliding plate and the pressing plate, the vacuum suction nozzle on the sliding plate can better adsorb and fix the bottom surface of the lead frame, and meanwhile, the pressing plate can be better attached to the top surface of the lead frame, so that the lead frame can be more firmly fixed, and the production efficiency is improved. Therefore, equipment can stably fix the lead frame conveniently, and the accuracy of follow-up detection of the equipment can be guaranteed conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor packaging testing, in particular to a support adsorption platform of a push-pull testing machine. Background Art

[0002] In the semiconductor packaging process, wire bonding refers to welding the two ends of the wire to the chip pad and the lead frame or PCB board respectively under a certain temperature and ultrasonic pressure to achieve the connection between the internal circuit of the chip and the external circuit. The quality of gold wire bonding will directly affect the life of semiconductor products, so it is necessary to test the tension of the gold wire arc and the thrust of the gold ball.

[0003] The existing push-pull force detection device is to place the bonded semiconductor device steadily on the fixing seat, and then press and fix the semiconductor device with a pressing plate, and then test the wire arc pull force and gold ball push force. During the test, the firmness of the pressure at the tested position will directly affect the accuracy of the test results.

[0004] Normally, a push-pull force machine is required to detect the push-pull force of the bonding wire on a single frame for a bonded semiconductor lead frame. Since the platform of the existing push-pull force equipment is short, it can only support a part of the lead frame. The unsupported part of the lead frame will bend and fall, which is easy to cause it to deform. At the same time, the pressure plate above the lead frame can only press the upper and lower edges of the lead frame, and the center point of the lead frame is easy to warp, which leads to unstable push-pull force of the equipment, easily affecting the accuracy of subsequent detection of the equipment, and is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a support adsorption platform for a push-pull machine.

[0006] The technical problem solved by the utility model is that the supporting platform of the existing push-pull testing machine is short in length, so that the lead frame cannot be fully supported, which easily causes the lead frame to warp.

[0007] The utility model can be realized by the following technical scheme: the support adsorption platform of the push-pull testing machine includes a main support plate, auxiliary support plates for further supporting the lead frame are fixedly installed on both sides of the main support plate, the inner cavity of the main support plate is provided with a fixed adsorption mechanism for fixing the lead frame, the fixed adsorption mechanism includes a plurality of vacuum suction nozzles slidably connected to the inner cavity of the main support plate, the top surface of the main support plate is penetrated with through holes cooperating with the vacuum suction nozzles, and a pressure plate corresponding to the vacuum suction nozzles is floatingly connected above the vacuum suction nozzles;

[0008] The inner cavity of the support plate is provided with a driving assembly for making the vacuum suction nozzle and the pressing plate move relative to each other.

[0009] A further technical improvement of the utility model is that the driving assembly includes a gear rotatably connected to the inner cavity of the main support plate, the gear is located below the vacuum nozzle, the bottom end of one side of the inner wall of the main support plate is slidably connected to a first rack fixedly connected to the vacuum nozzle, and the top end of the other side of the inner wall of the main support plate is slidably connected to a second rack fixedly connected to the pressure plate, and the rotating gear causes the first rack and the second rack to move relative to each other.

[0010] A further technical improvement of the utility model is that the inner cavity of the auxiliary support plate is provided with an extension mechanism for extending the length of the auxiliary support plate, and the extension mechanism includes an extension plate slidably connected to the inner cavity of the auxiliary support plate. The sliding extension plate enables the overall length of the auxiliary support plate to be adaptively adjusted according to the length of the lead frame.

[0011] A further technical improvement of the utility model is that the extension plate and the auxiliary support plate are fixed by positioning pins, and a plurality of through holes matching the positioning pins are formed through the outer wall of the auxiliary support plate. The plurality of through holes are evenly distributed on the outer wall of the auxiliary support plate. The arrangement of the plurality of through holes facilitates the change of the position of the extension plate in the inner cavity of the auxiliary support plate, thereby facilitating meeting the user's usage requirements.

[0012] A further technical improvement of the utility model is that a pull ring is fixedly installed on one side of the extension plate away from the inner cavity of the auxiliary support plate, and the outer wall of the pull ring is provided with anti-slip patterns for users to hold conveniently. The setting of the pull ring facilitates the user to slide the extension plate.

[0013] A further technical improvement of the utility model is that a vacuum pump is fixedly installed on the outer wall of the main support plate, the vacuum pump is connected to the vacuum suction nozzle, and the vacuum pump is used to provide power for the multiple vacuum suction nozzles.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model places the lead frame on the main support plate and the auxiliary support plate, and then rotates the rotating rod to drive the gear to rotate synchronously, and the rotation of the gear drives the first rack and the second rack to move relative to each other, and the relative movement of the first rack and the second rack makes the sliding plate and the pressing plate move synchronously, so that it is convenient to adjust the distance between the sliding plate and the pressing plate according to the actual thickness of the lead frame. By adjusting the distance between the two, it is not only convenient for the vacuum suction nozzle on the sliding plate to better adsorb and fix the bottom surface of the lead frame, but also convenient for the pressing plate to better fit the top surface of the lead frame, so that it is convenient for the equipment to stably fix the lead frame, and then it is convenient to ensure the accuracy of subsequent detection of the equipment, and it is convenient to meet the user's usage needs.

[0016] 2. The utility model can adjust the overall length of the device according to the actual length of the lead frame. When adjusting, the positioning pin used to fix the extension plate is taken out to release the limit of the extension plate. After the limit is released, the extension plate is slid through the pull ring on the extension plate. After the extension plate is slid to the working position, the extension plate is fixed again by the positioning pin. By adjusting it, the device can better fix the lead frame, thereby meeting the user's usage needs and facilitating subsequent use by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the main support plate of the utility model;

[0020] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the top view of the auxiliary support plate of the utility model;

[0023] Figure 6 For this utility model Figure 5 A partial enlarged view of point B in the middle.

[0024] In the figure:

[0025] 1. Main support plate; 11. Rotating rod; 12. Gear; 13. First rack; 14. Second rack; 15. Sliding plate; 16. Vacuum nozzle; 17. Through hole; 18. Pressing plate; 19. Protective pad; 110. Rotating handle; 111. Vacuum pump;

[0026] 2. Auxiliary support plate; 21. Extension plate; 22. Pull ring; 23. Slider; 24. Slide groove; 25. Positioning pin; 26. Through hole;

[0027] 3. Support board. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0029] See also Figure 1-6 As shown, this embodiment provides a technical solution, a support and adsorption platform of a push-pull testing machine, including a main support plate 1, a rotating rod 11 is rotatably connected between the two inner side walls of the main support plate 1 through a bearing, a gear 12 is fixedly sleeved in the middle of the outer wall of the rotating rod 11, a first rack 13 meshing with the gear 12 is slidably connected to the bottom end of one side of the inner wall of the main support plate 1, a sliding plate 15 fixedly connected to the first rack 13 is slidably connected to the inner cavity of the main support plate 1 and located above the gear 12, a plurality of evenly distributed vacuum suction nozzles 16 are fixedly installed on the sliding plate 15, a through hole 17 cooperating with the vacuum suction nozzle 16 is penetrated through the top surface of the main support plate 1, and a vacuum pump 111 connected to the vacuum suction nozzle 16 is fixedly installed on the outer wall of the main support plate 1.

[0030] The top end of the other side of the inner wall of the main support plate 1 is slidably connected to a second rack 14 meshing with the gear 12, the top end of the second rack 14 penetrates the main support plate 1 and extends to the top of the main support plate 1, and the second rack 14 extends to one end of the top of the main support plate 1 and is fixedly installed with a pressure plate 18, and the bottom end of the pressure plate 18 is fixedly installed with a protective pad 19, which is preferably a rubber pad. The provision of the protective pad 19 prevents the surface of the lead frame from being damaged when the equipment is fixing it.

[0031] Two auxiliary support plates 2 are symmetrically fixedly installed on both sides of the outer wall of the main support plate 1. One end of the rotating rod 11 passes through the main support plate 1 and the auxiliary support plate 2 in sequence and extends to the inner cavity of the auxiliary support plate 2. A rotating handle 110 is fixedly installed on one end of the rotating rod 11 extending to the inner cavity of the auxiliary support plate 2, and anti-slip grooves are engraved on the outer wall of the rotating handle 110.

[0032] The inner cavity of the auxiliary support plate 2 is slidably connected to an extension plate 21, and a pull ring 22 is fixedly installed on one side of the extension plate 21 away from the inner cavity of the auxiliary support plate 2. Two sliders 23 are symmetrically fixedly connected to the two sides of the outer wall of the extension plate 21. The inner wall of the auxiliary support plate 2 is provided with a slide groove 24 for the slider 23 to slide. The slider 23 and the auxiliary support plate 2 are fixed by a positioning pin 25. The outer wall of the auxiliary support plate 2 is penetrated by a plurality of through holes 26 connected with the slide groove 24, and the through holes 26 match the positioning pins 25.

[0033] A support plate 3 for stably supporting the auxiliary support plate 2 is fixedly installed in the middle of the inner cavity of the auxiliary support plate 2 .

[0034] When the utility model is in use, the overall length of the device is first adjusted according to the actual length of the lead frame. During the adjustment, the positioning pin 25 used to fix the extension plate 21 is taken out to release the limit of the extension plate 21. After the limit is released, the extension plate 21 is slid through the pull ring 22 on the extension plate 21. After the extension plate 21 slides to the working position, the extension plate 21 is fixed again by the positioning pin 25.

[0035] After the extension plate 21 is fixed, the lead frame is placed on the main support plate 1 and the auxiliary support plate 2, and then the handle 110 is turned to rotate the rotating rod 11. The rotation of the rotating rod 11 drives the gear 12 to rotate synchronously, and the rotation of the gear 12 drives the first rack 13 and the second rack 14 to move relative to each other. The relative movement of the first rack 13 and the second rack 14 makes the sliding plate 15 and the pressing plate 18 move synchronously, so that it is convenient to adjust the distance between the sliding plate 15 and the pressing plate 18 according to the actual thickness of the lead frame. By adjusting the distance between the two, it is not only convenient for the vacuum suction nozzle 16 on the sliding plate 15 to better adsorb and fix the bottom surface of the lead frame, but also convenient for the pressing plate 18 to better fit the top surface of the lead frame, thereby facilitating the equipment to stably fix the lead frame and ensuring the accuracy of subsequent detection of the equipment.

[0036] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A support adsorption platform of a push-pull machine, comprising a main support plate (1), characterized in that: Auxiliary support plates (2) for further supporting the lead frame are fixedly installed on both sides of the main support plate (1); the inner cavity of the main support plate (1) is provided with a fixed adsorption mechanism for fixing the lead frame; the fixed adsorption mechanism includes a plurality of vacuum suction nozzles (16) slidably connected to the inner cavity of the main support plate (1); a through hole (17) cooperating with the vacuum suction nozzle (16) is formed through the top surface of the main support plate (1); and a pressing plate (18) corresponding to the vacuum suction nozzle (16) is floatingly connected above the vacuum suction nozzle (16); The inner cavity of the support plate (1) is provided with a driving component for enabling the vacuum suction nozzle (16) and the pressing plate (18) to move relative to each other.

2. The support adsorption platform of the push-pull machine according to claim 1, characterized in that: The driving assembly comprises a gear (12) rotatably connected to the inner cavity of the main support plate (1), the gear (12) being located below the vacuum nozzle (16), the bottom end of one side of the inner wall of the main support plate (1) being slidably connected to a first rack (13) fixedly connected to the vacuum nozzle (16), and the top end of the other side of the inner wall of the main support plate (1) being slidably connected to a second rack (14) fixedly connected to a pressure plate (18).

3. The support adsorption platform of the push-pull machine according to claim 1, characterized in that: The inner cavity of the auxiliary support plate (2) is provided with an extension mechanism for extending the length of the auxiliary support plate (2), and the extension mechanism comprises an extension plate (21) slidably connected to the inner cavity of the auxiliary support plate (2).

4. The support adsorption platform of the push-pull machine according to claim 3, characterized in that: The extension plate (21) and the auxiliary support plate (2) are fixed by means of positioning pins (25), and a plurality of through holes (26) matching the positioning pins (25) are formed through the outer wall of the auxiliary support plate (2).

5. The support adsorption platform of the push-pull machine according to claim 3, characterized in that: A pull ring (22) is fixedly mounted on a side of the extension plate (21) away from the inner cavity of the auxiliary support plate (2).

6. The support adsorption platform of the push-pull machine according to claim 1, characterized in that: A vacuum pump (111) is fixedly mounted on the outer wall of the main support plate (1), and the vacuum pump (111) is connected to the vacuum suction nozzle (16).

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