Chip screening device

Abstract

The chip screening device comprises a shell, a driving assembly and a screening assembly, the driving assembly is installed outside the shell, the screening assembly is installed inside the shell, and the driving assembly is in transmission connection with the screening assembly; a discharging box and a liquid storage box are arranged in the shell, and cleaning liquid is contained in the liquid storage box. The screening assembly comprises a screening barrel, screening holes are evenly distributed in the outer circumferential face of the screening barrel, the driving assembly is used for driving the screening barrel to enter the cleaning liquid and drive the screening barrel to rotate, and the screening barrel can be used for being filled with chips to be screened. When the chip screening device is used for screening chips, the chips can be conveniently screened, and meanwhile, collision among the chips can be effectively relieved in the screening process, so that the production quality of the chips is improved, and the chip screening device has high practicability.

Description

Technical Field

[0001] The invention relates to the technical field of chip screening, and in particular to a chip screening device. Background Art

[0002] When processing chips, circuit lithography is often performed on the wafer. After completion, the wafer needs to be cut into several small pieces, which are common chips. Generally, when the chip cutting is completed, the chips are disconnected by squeezing and crushing. Then the operator peels off the chip stuck on the blue film by hand rubbing, and then screens the chip to screen out the debris mixed in the chip, and then removes the incomplete chip through oscillating feeding.

[0003] Among them, when the screening device currently used is screening, the chips are prone to collision and damage to the chips, or the friction between the screening device and the chips will also damage the chips, which will have a certain impact on the chip yield and reduce the quality of the chips. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a chip screening device which can facilitate the screening of chips and effectively reduce the collision between chips during the screening process, thereby improving the production quality of the chips and having strong practicality.

[0005] The present invention provides a technical solution to solve the above problems: a chip screening device, comprising a housing, a driving assembly and a screening assembly, wherein the driving assembly is installed outside the housing, the screening assembly is installed inside the housing, and the driving assembly is connected to the screening assembly by transmission; a material discharge box and a liquid storage tank are arranged inside the housing, and a cleaning liquid is contained in the liquid storage tank;

[0006] The screening assembly comprises a screening cylinder, and screening holes are evenly distributed on the outer circumferential surface of the screening cylinder. The driving assembly is used to drive the screening cylinder into the cleaning liquid and drive the screening cylinder to rotate. The screening cylinder can be used to fill the chips to be screened.

[0007] Preferably, the driving assembly includes a mobile platform and a motor 1, wherein the motor 1 is mounted on the mobile platform, the motor 1 is connected to the screening drum via a connecting shaft, and the mobile platform is used to drive the motor 1 to achieve horizontal and vertical movements.

[0008] Preferably, the mobile platform includes a second motor, a guide rail, a lead screw, a movable block, and a lifting frame. The second motor is installed on the housing. The lead screw is connected to the output end of the second motor. The movable block is movably installed on the guide rail. A threaded hole matching the lead screw is provided on the movable block. The lifting frame is installed at the upper end of the movable block. The first motor is installed on the lifting frame.

[0009] Preferably, an L-shaped groove for the connection shaft to cooperate with is provided on the housing.

[0010] Preferably, a feeding and discharging port is provided on the screening cylinder. An installation track is provided at the feeding and discharging port. An arc-shaped switch plate is provided on the installation track.

[0011] Preferably, a magnet capable of attracting the arc-shaped switch plate is provided at the bottom end of the installation track.

[0012] Preferably, a locking assembly for locking the arc-shaped switch plate is further provided on the screening cylinder.

[0013] Preferably, the locking assembly includes a rotating cylinder, a connecting sleeve, and several connecting rods. The connecting sleeve is sleeved on a section of the connecting shaft located inside the screening cylinder. Several of the connecting rods are symmetrically installed on the outer circumferential surfaces at both ends of the connecting sleeve. The end of the connecting rod away from the connecting sleeve is connected to the rotating cylinder. A limiting rod is provided on the rotating cylinder. A first limiting edge for engaging with the limiting rod is provided on the arc-shaped switch plate.

[0014] Preferably, the rotating cylinder includes two collar rings and several protruding edges. The several protruding edges are used to connect the two collar rings. The connecting rod is connected to the inner ring of the collar ring.

[0015] Preferably, a second limiting edge is provided on a section of the connecting shaft that cooperates with the connecting sleeve. A limiting groove for cooperating with the second limiting edge is provided on the inner ring of the connecting sleeve.

[0016] Compared with the prior art, the advantages of the present invention are as follows: When screening chips, the present invention can facilitate the screening of chips. At the same time, during the screening process, it can effectively reduce the collision between chips, thereby improving the production quality of chips and having strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a left view of the present invention;

[0020] Figure 3 is a cross-sectional view of the present invention;

[0021] Figure 4 is a cross-sectional view of the screening cylinder of the present invention;

[0022] Figure 5 is a cross-sectional view after the arc-shaped switch plate of the present invention is opened;

[0023] Figure 6 is Figure 4 an enlarged schematic view of part A in

[0024] Figure 7 is Figure 4 an enlarged schematic view of part B in

[0025] Figure 8 is a top cross-sectional view of the screening cylinder of the present invention.

[0026] Reference numerals in the drawings: 1. Outer shell, 2. L-shaped groove, 3. First motor, 4. Lifting frame, 5. Guide rail, 6. Movable block, 7. Lead screw, 8. Second motor, 9. Liquid storage tank, 10. Screening cylinder, 11. Collar, 12. Convex ridge, 13. Connecting rod, 14. Arc-shaped switch plate, 15. Installation track, 16. Feeding and discharging port, 17. Connecting shaft, 18. Connecting sleeve, 19. Limiting groove, 20. Second limiting ridge, 21. First limiting ridge, 22. Limiting rod, 23. Screening hole, 24. Feeding box, 35. Baffle. Detailed implementation manners

[0027] The following will, in conjunction with the drawings and embodiments, elaborate in detail on the implementation manners of the present invention, so as to fully understand how the present invention uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0028] In the description of the present invention, it should be noted that for orientation terms, if there are terms such as "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationships shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0029] In addition, terms such as "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise specifically defined.

[0030] In the present invention, unless otherwise clearly specified and defined, terms such as "assembled", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may also be a mechanical connection; it may be directly connected or connected through an intermediate medium, and it may be internally connected and communicated between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0032] It should also be understood that the terms used in the description of the embodiments of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0033] Specific embodiments of the present invention are shown in the accompanying drawings. A chip screening device includes a housing 1, a driving assembly, and a screening assembly. The driving assembly is installed outside the housing 1, and the screening assembly is installed inside the housing 1. The driving assembly is in transmission connection with the screening assembly. A blanking box 24 and a liquid storage tank 9 are provided inside the housing 1, and a cleaning liquid is contained in the liquid storage tank 9.

[0034] The screening assembly includes a screening cylinder 10. Screening holes 23 are evenly distributed on the outer circumferential surface of the screening cylinder 10. The driving assembly is used to drive the screening cylinder 10 into the cleaning liquid and drive the screening cylinder 10 to rotate. The screening cylinder 10 can be used to fill the chips to be screened.

[0035] In the above solution, by setting a liquid storage tank filled with cleaning liquid and a rotatable screening cylinder, when screening the chips, the rotation of the screening cylinder drives the chips inside the screening cylinder to move, so as to throw out the impurities inside the screening cylinder from the screening holes, which facilitates the screening of the chips. At the same time, during the screening process, the cleaning liquid can effectively reduce the collision between the chips, thereby improving the production quality of the chips, and has strong practicability.

[0036] In this embodiment, the driving assembly includes a moving platform and a first motor 3. The first motor 3 is installed on the moving platform. The first motor 3 is connected to the screening cylinder 10 through a connecting shaft 17. The moving platform is used to drive the first motor 3 to achieve horizontal and vertical movements. Further, the moving platform includes a second motor 8, a guide rail 5, a lead screw 7, a movable block 6 and a lifting frame 4. The second motor 8 is installed on the housing 1. The lead screw 7 is connected to the output end of the second motor 8. The movable block 6 is movably installed on the guide rail 5. A threaded hole matching the lead screw 7 is provided on the movable block 6. The lifting frame 4 is installed at the upper end of the movable block 6. The first motor 3 is installed on the lifting frame 4. In this embodiment, in order to realize the movement of the connecting shaft, an L-shaped groove 2 for the cooperation of the connecting shaft 17 is provided on the housing 1.

[0037] In the above solution, a feeding groove is provided on one side of the housing. The chips to be screened are put into the screening cylinder from the feeding groove. Then, the second motor is started. The rotation of the second motor drives the movable block to move to the specified position to the right. Then, the lifting platform is controlled to descend so that the lower half of the screening cylinder enters the cleaning liquid.

[0038] As another embodiment of the present invention, a feeding and discharging port 16 is provided on the screening cylinder 10. An installation track 15 is provided at the feeding and discharging port 16. An arc-shaped switch plate 14 is provided on the installation track 15. Further, in order to limit the arc-shaped switch plate after installation, a magnet capable of attracting the arc-shaped switch plate 14 is provided at the bottom end of the installation track 15. When the arc-shaped switch plate is pushed to the bottom of the installation guide rail, the arc-shaped switch plate is attracted by the magnet, thereby positioning the arc-shaped switch plate.

[0039] Among them, in order to improve the stability of the arc-shaped switch board during rotation, a locking component for locking the arc-shaped switch board 14 is further provided on the screening cylinder 10. Further, the locking component includes a rotating cylinder, a connecting sleeve 18 and a plurality of connecting rods 13. The connecting sleeve 18 is sleeved on a section of the connecting shaft 17 located inside the screening cylinder 10. A plurality of the connecting rods 13 are symmetrically installed on the outer circumferential surfaces at both ends of the connecting sleeve 18. One end of the connecting rod 13 far from the connecting sleeve 18 is connected to the rotating cylinder. A limiting rod 22 is provided on the rotating cylinder, and a first limiting edge 21 engaged with the limiting rod 22 is provided on the arc-shaped switch board 14. Even further, the rotating cylinder includes two collar rings 11 and a plurality of protruding edges 12. The plurality of protruding edges 12 are used to connect the two collar rings 11, and the connecting rod 13 is connected to the inner ring of the collar ring 11.

[0040] When the screening cylinder rotates, there is a risk that the arc-shaped switch board will open. In the above solution, when the screening cylinder rotates clockwise, the protruding edges in the locking component are rotated counterclockwise by the reaction force of the cleaning liquid until the limiting rod on the rotating cylinder contacts the first limiting edge on the arc-shaped switch board, thereby locking the arc-shaped switch board and preventing the arc-shaped switch board from opening during rotation and affecting the normal progress of the screening work. Among them, on the one hand, the protruding edges in the locking component can stir the cleaning liquid in the screening cylinder when the screening cylinder rotates, improving the cleaning effect of the cleaning liquid on the chips. On the other hand, the arc-shaped switch board is locked by using the reaction force received by the protruding edges. When the screening work is over, the force received by the protruding edges disappears, and the limit of the locking component is eliminated, and the arc-shaped switch board can be opened. The chips in the screening cylinder fall into the blanking box from the feeding and discharging port, and the arc-shaped switch board is convenient to open.

[0041] Among them, in order to limit the relative rotation of the connecting pipe sleeve and the connecting shaft, a second limiting edge 20 is provided on a section of the connecting shaft 17 that cooperates with the connecting sleeve 18, and a limiting groove 19 that cooperates with the second limiting edge 20 is provided on the inner ring of the connecting sleeve 18.

[0042] Among them, it should be noted that in order to recover the cleaning liquid thrown out during the rotation of the screening cylinder, a baffle is provided on the upper part of the liquid storage tank.

[0043] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to change. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A chip screening device, comprising a housing (1), a drive assembly and a screening assembly, wherein the drive assembly is mounted outside the housing (1), the screening assembly is mounted inside the housing (1), and the drive assembly is in transmission connection with the screening assembly; characterized in that: A material discharge box (24) and a liquid storage box (9) are arranged inside the housing (1), and the liquid storage box (9) is filled with cleaning liquid; The screening component comprises a screening cylinder (10), the outer circumferential surface of the screening cylinder (10) being evenly distributed with screening holes (23), the driving component being used to drive the screening cylinder (10) into the cleaning liquid and to drive the screening cylinder (10) to rotate, and the screening cylinder (10) can be used to fill the chips to be screened.

2. A chip screening device according to claim 1, characterized in that: The driving assembly comprises a mobile platform and a motor (3), wherein the motor (3) is mounted on the mobile platform, the motor (3) is connected to the screening drum (10) via a connecting shaft (17), and the mobile platform is used to drive the motor (3) to achieve horizontal and vertical movement.

3. A chip screening device according to claim 2, characterized in that: The mobile platform comprises a second motor (8), a guide rail (5), a screw rod (7), a movable block (6) and a lifting frame (4); the second motor (8) is mounted on a housing (1); the screw rod (7) is connected to an output end of the second motor (8); the movable block (6) can be movably mounted on the guide rail (5); a threaded hole matching the screw rod (7) is provided on the movable block (6); the lifting frame (4) is mounted on the upper end of the movable block (6); and the first motor (3) is mounted on the lifting frame (4).

4. A chip screening device according to claim 3, characterized in that: The housing (1) is provided with an L-shaped groove (2) for the connecting shaft (17) to cooperate with.

5. A chip screening device according to claim 1, characterized in that: The screening cylinder (10) is provided with an inlet and outlet port (16), a mounting track (15) is provided at the inlet and outlet port (16), and an arc-shaped switch plate (14) is provided on the mounting track (15).

6. A chip screening device according to claim 5, characterized in that: The bottom end of the installation track (15) is provided with a magnetic block which can be attracted to the arc-shaped switch plate (14).

7. A chip screening device according to claim 6, characterized in that: The screening cylinder (10) is also provided with a locking assembly for locking the arc-shaped switch plate (14).

8. A chip screening device according to claim 7, characterized in that: The locking assembly comprises a rotating cylinder, a connecting sleeve (18) and a plurality of connecting rods (13); the connecting sleeve (18) is sleeved on a section of the connecting shaft (17) located inside the screening cylinder (10); the plurality of connecting rods (13) are symmetrically mounted on the outer circumferential surfaces of both ends of the connecting sleeve (18); one end of the connecting rod (13) away from the connecting sleeve (18) is connected to the rotating cylinder; a limiting rod (22) is arranged on the rotating cylinder; and a limiting edge (21) engaged with the limiting rod (22) is arranged on the arc switch plate (14).

9. A chip screening device according to claim 8, characterized in that: The rotating cylinder comprises two sleeve rings (11) and a plurality of protruding edges (12), wherein the plurality of protruding edges (12) are used to connect the two sleeve rings (11), and the connecting rod (13) is connected to the inner ring of the sleeve ring (11).

10. A chip screening device according to claim 9, characterized in that: A second limiting edge (20) is provided on a section of the connecting shaft (17) that matches the connecting sleeve (18), and a limiting groove (19) that matches the second limiting edge (20) is provided on the inner ring of the connecting sleeve (18).

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