A semiconductor multi-purpose air shower screening device
By introducing anhydrous ethanol spray and vacuum dust extraction pipe into the semiconductor sieving device, combined with a vibrating screen design, the problem of poor dust removal effect was solved, achieving more thorough dust and debris removal, and improving test yield and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CHIPPACKING TECH CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-06-02
AI Technical Summary
Existing semiconductor screening devices have poor dust removal performance, resulting in dust and debris adhering to the products, affecting test yield and increasing the difficulty of testing, as well as increasing the risk of belt bursting.
The system combines an automatic anhydrous ethanol spraying device with a vacuum dust extraction pipe. It eliminates static electricity and removes dust by spraying anhydrous ethanol. The design incorporates an inclined screen and a vibration mechanism to enhance the removal of dust and debris. The vacuum dust extraction pipe draws the dust into the mixing cylinder.
It effectively reduces dust and debris, minimizes dust generation, improves test yield, reduces the risk of belt bursts, and enhances product quality stability.
Smart Images
Figure CN224308922U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibrating screen technology, and more specifically, to a semiconductor multi-purpose air shower screening device. Background Technology
[0002] In the packaging and testing manufacturing industry, a large amount of dust and debris is generated during the lead cutting process. During the next testing process, this dust and debris may adhere to the product's leads, causing poor contact and low test yields when the product contacts the gold fingers. Dust and debris also increase the difficulty of inspecting printed markings / leads, leading to visual software failures and exceeding marking / lead limits. Furthermore, a large amount of dust and debris can cause poor tape sealing and even tape bursts. To effectively reduce dust and debris adhering to the product surface and minimize dust generation during sieving, products after the lead cutting process need to be sieved to remove the dust and debris.
[0003] Existing semiconductor sieving devices have poor dust removal performance. Utility Model Content
[0004] The present invention provides a multi-purpose air shower sieving device for semiconductors, which aims to solve the problem that existing semiconductor sieving devices have poor dust removal performance.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a semiconductor multi-purpose air shower sieving device, including a support frame, a vibrating positioning frame movably mounted on the support frame, a screen fixedly mounted inside the positioning frame, a separation cylinder integrally formed at the bottom of the positioning frame, the separation cylinder having a funnel-shaped structure, the upper opening of the separation cylinder corresponding to the bottom of the screen, the support frame, the positioning frame and the screen all having a segmented structure, and the screen being arranged at an inclination, a feed tray installed at the input end of the screen, and a discharge frame installed at the output end of the screen;
[0006] Positioning plates are installed on both inner sides of the positioning frame. An automatic anhydrous ethanol spraying device is fixedly installed on the positioning plate. The input end of the automatic anhydrous ethanol spraying device is connected to an external anhydrous ethanol source. The automatic anhydrous ethanol spraying device sprays anhydrous ethanol onto the product on the screen surface. A vacuum dust extraction pipe is installed inside the mixing cylinder. The vacuum dust extraction pipe is used to suck the dust on the screen surface into the mixing cylinder.
[0007] In a preferred embodiment, a first frame and a second frame are respectively installed on the same side of the support frame. A self-rotating roller is rotatably installed on the first frame. The roller is located at the bottom of the screen. A cam is fixedly fitted in the middle of the roller. The cam is in movable contact with the bottom of the screen. When the roller rotates, the cam rotates and drives the screen to vibrate in the up and down direction.
[0008] In a preferred embodiment, a motor is arranged on the second frame, and a motor base is installed at the bottom of the motor. One side of the motor base is hinged to the second frame. A strip-shaped hole is opened on the side of the motor base away from the hinge side. A positioning rod is movably disposed in the strip-shaped hole. A ball head is installed at the top of the positioning rod. The diameter of the ball head is larger than the diameter of the strip-shaped hole. The positioning rod is movably disposed through the second frame. A second spring is fitted on the outside of the rod wall of the positioning rod. The two ends of the second spring are respectively connected to the motor base and the second frame.
[0009] In a preferred embodiment, pulleys are installed at the ends of both the motor's output shaft and the roller's shaft, and the two pulleys are driven by a belt.
[0010] In a preferred embodiment, multiple ear blocks are installed on both sides of the positioning frame, and a first spring is installed at the bottom of the ear blocks. The end of the first spring away from the ear blocks is fixedly connected to the support frame.
[0011] In a preferred embodiment, a material-gathering plate is mounted on the surface of the screen. The material-gathering plate is arranged in a figure-eight structure, and the opening of the material-gathering plate gradually decreases along the conveying direction of the product on the screen.
[0012] In a preferred embodiment, a material distribution plate is rotatably mounted on the screen. The material distribution plate has a cross-shaped structure, and a servo motor is mounted at the end of the rotating shaft of the material distribution plate. The servo motor is installed inside the mixing cylinder.
[0013] The technical effects and advantages of this utility model are as follows: By using this design after the rebar cutting process, the dust phenomenon can be reduced, the static electricity elimination effect can be increased, and the ability to adsorb dust and debris can be improved, so as to reduce the powder and dust debris of products with multiple packaging forms. Effectively reducing the dust and debris of the product can reduce the workload of the testing process, improve the product testing yield, and at the same time reduce the risk of belt bursting, reduce product loss, and reduce the probability of quality abnormalities. Attached Figure Description
[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a top view of the overall structure of this utility model.
[0016] Figure 3 This is a front view schematic diagram of the overall structure of this utility model.
[0017] Figure 4 This utility model Figure 3 An enlarged schematic diagram of the structure at point A in the middle.
[0018] The attached figures are labeled as follows: 1. Support frame; 11. First frame; 12. Second frame; 2. Positioning frame; 21. Feed tray; 22. Discharge frame; 23. Ear block; 24. First spring; 25. Mixture separator; 3. Screen; 31. Gathering plate; 32. Distributing plate; 4. Positioning plate; 5. Anhydrous ethanol automatic spraying device; 6. Motor; 61. Motor base; 62. Positioning rod; 63. Second spring; 7. Rotating roller. Detailed Implementation
[0019] 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.
[0020] Example
[0021] Refer to the instruction manual appendix Figures 1-4 A semiconductor multi-purpose air shower screening device includes a support frame 1, a vibrating positioning frame 2 movably mounted on the support frame 1, a screen 3 fixedly mounted inside the positioning frame 2, a separation cylinder 25 integrally formed at the bottom of the positioning frame 2, the separation cylinder 25 having a funnel-shaped structure, the upper opening of the separation cylinder 25 corresponding to the bottom of the screen 3, the support frame 1, the positioning frame 2 and the screen 3 all having a segmented structure, and the screen 3 being arranged at an inclination, a feed tray 21 installed at the input end of the screen 3, and a discharge frame 22 installed at the output end of the screen 3;
[0022] Positioning plates 4 are installed on both inner sides of the positioning frame 2. An anhydrous ethanol automatic spraying device 5 is fixedly installed on the positioning plate 4. The input end of the anhydrous ethanol automatic spraying device 5 is connected to an external anhydrous ethanol source. The anhydrous ethanol automatic spraying device 5 sprays anhydrous ethanol onto the product on the surface of the screen 3. A vacuum dust extraction pipe is installed inside the mixing cylinder 25. The vacuum dust extraction pipe is used to suck the dust on the surface of the screen 3 into the mixing cylinder 25.
[0023] It should be noted that in this embodiment, the number of support frames 1 is set to three sets. The heights of the three sets of support frames 1 are different, but they are compatible with each other. The positioning frame 2 is installed in conjunction with the support frame 1. In specific implementation scenarios, there are two ways to connect the screen 3 and the positioning frame 2. One way is that the screen 3 and the positioning frame 2 are connected as one piece, and the positioning frame 2 and the support frame 1 are connected movably. The vibration motor is installed on the support frame 1. The vibration motor drives the positioning frame 2 and the screen 3 to vibrate together to separate dust and debris from the product surface. The other way is that the screen 3 and the positioning frame 2 are connected movably, and the positioning frame 2 and the support frame 1 are connected as one piece. In this connection method, the inner side of the positioning frame 2 is equipped with a movable groove. The screen 3 is set in the movable groove, and the output end of the vibration motor is connected to the screen 3. The vibration motor drives the screen 3 to vibrate to clean the dust and debris from the product surface.
[0024] The anhydrous ethanol spray device 5 includes a U-shaped nozzle, a connecting pipe, and a water pump. The U-shaped nozzle is installed on the positioning frame 2. Multiple nozzles are installed at the output end of the U-shaped nozzle. A connecting pipe is installed at the input end of the U-shaped nozzle. The other end of the connecting pipe is connected to the output end of the water pump. The input end of the water pump is connected to an external anhydrous ethanol source. The external anhydrous ethanol source can be an external container holding anhydrous ethanol.
[0025] The vacuum dust extraction pipe includes an air suction nozzle and a vacuum pump. The vacuum pump is fixedly installed inside the dust collection cylinder 25. The input end of the vacuum pump is connected to the air suction nozzle, and the suction end of the air suction nozzle is directly below the screen 3. When the vacuum pump is started, the vacuum pump generates suction, which sucks the dust on the surface of the screen 3 into the dust collection cylinder 25, and finally discharges it from the bottom opening of the dust collection cylinder 25.
[0026] It should be further explained that the device of this utility model replaces the static ion fan of the original sieving device with an anhydrous ethanol spray device 5, which can reduce dust and improve the static elimination effect of the device; two dust extraction pipes are added to the bottom of the original sieving device (that is, a vacuum dust extraction pipe is installed inside the mixing cylinder 25) to increase the strength of dust and debris removal, so that the dust and debris of the product are removed more thoroughly.
[0027] In an embodiment of this utility model, the specific implementation scenario is as follows: the worker pours the product into the feeding tray 21. With gravity, the product gradually slides onto the screen 3 in the positioning frame 2. As the motor 6 drives the screen 3 to vibrate, the product on the screen 3 is continuously subjected to vibration, causing the dust and debris on the product surface to detach from the product surface. By turning on the anhydrous ethanol automatic spraying device 5, the anhydrous ethanol is pumped into the spray pipe and finally sprayed onto the product on the screen 3. The sprayed anhydrous ethanol can reduce dust and improve the static electricity removal effect of the device. Then, the vacuum dust extraction pipe in the separation cylinder 25 works, causing the product on the surface of the screen 3 to be subjected to downward suction, thereby sucking the dust and debris on the surface of the screen 3 into the separation cylinder 25, making the dust and debris of the product more thoroughly removed.
[0028] On the same side of the support frame 1, a first frame 11 and a second frame 12 are respectively installed. A self-rotating roller 7 is rotatably installed on the first frame 11. The roller 7 is located at the bottom of the screen 3. A cam is fixedly fitted in the middle of the roller 7. The cam is in movable contact with the bottom of the screen 3. When the roller 7 rotates, the cam rotates and drives the screen 3 to vibrate in the up and down direction.
[0029] It should be noted that the screen 3 is driven to vibrate by the rotation of the cam, thereby conveying the product from top to top and removing dust and debris from the product surface through vibration.
[0030] A motor 6 is arranged on the second frame 12. A motor base 61 is installed at the bottom of the motor 6. One side of the motor base 61 is hinged to the second frame 12. A strip-shaped hole is opened on the side of the motor base 61 away from the hinge side. A positioning rod 62 is movably installed in the strip-shaped hole. A ball head is installed at the top of the positioning rod 62. The diameter of the ball head is larger than the diameter of the strip-shaped hole. The positioning rod 62 is movably installed through the second frame 12. A second spring 63 is fitted on the outside of the rod wall of the positioning rod 62. The two ends of the second spring 63 are connected to the motor base 61 and the second frame 12 respectively.
[0031] It should be noted that by setting the strip hole, positioning rod 62, second spring 63 and hinged motor base 61, the energy generated by the vibration of the device during the operation of the motor 6 is absorbed, thus avoiding interference.
[0032] Both the output shaft of motor 6 and the shaft end of roller 7 are equipped with pulleys, and the two pulleys are driven by a belt.
[0033] Multiple ear blocks 23 are installed on both sides of the positioning frame 2. A first spring 24 is installed at the bottom of the ear block 23. The end of the first spring 24 away from the ear block 23 is fixedly connected to the support frame 1.
[0034] The surface of the screen 3 is equipped with a material gathering plate 31, which is arranged in a figure-eight structure. The opening of the material gathering plate 31 gradually decreases along the conveying direction of the product on the screen 3.
[0035] It should be noted that the material gathering plate 31 facilitates the gathering of products towards the center of the screen 3. Due to the position of the separation cylinder 25, the suction force of the screen 3 located in the center is the strongest.
[0036] A material distribution plate 32 is also rotatably mounted on the screen 3. The material distribution plate 32 has a cross-shaped structure. A servo motor is installed at the end of the rotating shaft of the material distribution plate 32. The servo motor is installed inside the mixing cylinder 25.
[0037] It should be noted that in the embodiments of this utility model, there are two driving methods for the material separating plate 32. One method uses a servo motor to drive the material separating plate 32 to rotate, thereby separating the products on the screen 3 and avoiding the products from being squeezed together in the same area and causing damage. The other method does not use a servo motor, but instead uses the product 3 to move on the screen 3 to push the material separating plate 32 to rotate, thereby achieving the function of product separation.
[0038] In this invention, the use of anhydrous ethanol automatic spray enhances the effect of eliminating static electricity, suppresses dust generation during the sieving process, and maintains air cleanliness; the vacuum dust extraction tube improves the dust removal capability: reducing dust and debris adhering to product pins, improving the reliability of test contact, reducing false judgments, and increasing test yield; reducing fine dust adhering to the product surface makes it easier for test vision software to detect the product's printing and pins.
[0039] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A semiconductor multi-purpose air shower screening device, comprising a support frame (1), characterized in that: A vibrating positioning frame (2) is movably installed on the support frame (1). A screen (3) is fixedly installed inside the positioning frame (2). A separation cylinder (25) is integrally formed at the bottom of the positioning frame (2). The separation cylinder (25) has a funnel-shaped structure. The upper opening of the separation cylinder (25) corresponds to the bottom of the screen (3). The support frame (1), positioning frame (2) and screen (3) are all segmented structures. The screen (3) is arranged at an inclination. A feed tray (21) is installed at the input end of the screen (3). A discharge frame (22) is installed at the output end of the screen (3). Positioning plates (4) are installed on both inner sides of the positioning frame (2). An anhydrous ethanol automatic spraying device (5) is fixedly installed on the positioning plate (4). The input end of the anhydrous ethanol automatic spraying device (5) is connected to an external anhydrous ethanol source. The anhydrous ethanol automatic spraying device (5) sprays anhydrous ethanol onto the product on the surface of the screen (3). A vacuum dust extraction pipe is installed inside the mixing cylinder (25). The vacuum dust extraction pipe is used to suck the dust on the surface of the screen (3) into the mixing cylinder (25).
2. The semiconductor multi-purpose air shower sieving device according to claim 1, characterized in that: The support frame (1) is equipped with a first frame (11) and a second frame (12) on the same side. A self-rotating roller (7) is rotatably mounted on the first frame (11). The roller (7) is located at the bottom of the screen (3). A cam is fixedly fitted in the middle of the roller (7). The cam is in active contact with the bottom of the screen (3). When the roller (7) rotates, the cam rotates and drives the screen (3) to vibrate in the up and down direction.
3. The semiconductor multi-purpose air shower screening device according to claim 2, characterized in that: A motor (6) is arranged on the second frame (12). A motor base (61) is installed at the bottom of the motor (6). One side of the motor base (61) is hinged to the second frame (12). A strip hole is opened on the side of the motor base (61) away from the hinge side. A positioning rod (62) is movably disposed in the strip hole. A ball head is installed at the top of the positioning rod (62). The diameter of the ball head is larger than the diameter of the strip hole. The positioning rod (62) is movably disposed through the second frame (12). A second spring (63) is fitted on the outside of the rod wall of the positioning rod (62). The two ends of the second spring (63) are respectively connected to the motor base (61) and the second frame (12).
4. The semiconductor multi-purpose air shower screening device according to claim 3, characterized in that: Both the output shaft of the motor (6) and the shaft end of the roller (7) are equipped with pulleys, and the two pulleys are driven by a belt.
5. The semiconductor multi-purpose air shower screening device according to claim 4, characterized in that: Multiple ear blocks (23) are installed on both sides of the positioning frame (2). A first spring (24) is installed at the bottom of the ear block (23). The end of the first spring (24) away from the ear block (23) is fixedly connected to the support frame (1).
6. The semiconductor multi-purpose air shower sieving device according to claim 5, characterized in that: The surface of the screen (3) is equipped with a material gathering plate (31), which is arranged in a figure-eight structure. The opening of the material gathering plate (31) gradually decreases along the conveying direction of the product on the screen (3).
7. A semiconductor multi-purpose air shower sieving device according to claim 6, characterized in that: A material distribution plate (32) is also rotatably mounted on the screen (3). The material distribution plate (32) has a cross-shaped structure. A servo motor is installed at the end of the rotating shaft of the material distribution plate (32). The servo motor is installed inside the mixing cylinder (25).