Plane vibrating screen mechanism of arraying machine

Abstract

The utility model provides a plane vibrating screen mechanism of an arraying machine, which comprises a transverse sliding mechanism, a longitudinal sliding mechanism and a vibrating screen driving mechanism, the transverse sliding mechanism is mounted on a mounting platform, the longitudinal sliding mechanism is mounted on the transverse sliding mechanism, and a mounting seat is mounted on the longitudinal sliding mechanism; the plane vibration sieve mechanism and the swing mechanism are arranged to control overturning and posture adjustment of wafers in all directions in the plane, an up-down vibration mode in the prior art is avoided, the swing mechanism is matched to move scattered crystal piles in the arraying disc to achieve full-disc arraying, and the device has the advantages of being high in hole entering rate, high in arraying efficiency and the like.

Description

Technical Field

[0001] This utility model relates to the field of discrete device packaging, and in particular to a planar vibrating screen mechanism for an aligner. Background Technology

[0002] In semiconductor discrete device packaging, there are typically two different forms: blue film wafer mounting and loose die bonding. In loose die packaging, the loose die needs to be placed at a designated position on the die disk so that the automated robotic arm can sequentially remove the loose die from the die cavity or the designated position on the die disk for packaging. Current technology typically uses a rocking motion to place the loose die sequentially at the designated position on the die disk; this process is called the alignment process. Existing alignment machines usually use up-and-down vibration and left-and-right swaying to cause the pile of loose die to continuously flip and jump around on the die disk or alignment disk, changing their positions. When a loose die accidentally falls into a die cavity, it can be held in place by the suction force at the bottom of the cavity, thus completing the alignment operation at that cavity.

[0003] However, in the existing technology, the crystal shaking method results in obvious crystal jumping and completely random posture flipping, which leads to a low cavity entry rate and a long time required for each arranging plate to complete the arranging of all cavities, resulting in low arranging efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing loose crystal aligning efficiency is low. This utility model provides a planar vibrating screen mechanism for an aligning machine to solve the above problem.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a planar vibrating screen mechanism for a lining machine, which drives a mounting base mounted on a mounting platform through a vibrating screen drive mechanism. The vibrating screen drive mechanism includes a support mounted on the mounting platform, a drive motor vertically fixed on the support, and a drive shaft connected to the output shaft of the drive motor. The drive shaft is rotatably mounted on the mounting platform, and an eccentric cam is provided at the upper end of the drive shaft. The bottom of the mounting base is provided with a mounting bushing that matches the shape of the eccentric cam, and the eccentric cam is fitted into the mounting bushing.

[0006] Furthermore, it also includes a lateral sliding mechanism and a longitudinal sliding mechanism, wherein the lateral sliding mechanism is mounted on the mounting platform, the longitudinal sliding mechanism is mounted on the lateral sliding mechanism, and the mounting base is mounted on the longitudinal sliding mechanism.

[0007] Further: the lateral sliding mechanism includes a lateral guide rail fixedly mounted on the mounting platform and a lateral slider slidably mounted on the lateral guide rail; the longitudinal sliding mechanism includes a longitudinal guide rail fixedly mounted on the lateral slider and a longitudinal slider slidably mounted on the longitudinal guide rail, and the mounting base is fixedly mounted on the longitudinal slider.

[0008] Furthermore: the mounting platform is provided with a support sleeve, and the drive shaft is rotatably mounted in the support sleeve; the bottom opening of the mounting bushing is provided and a wear-resistant ring is provided inside it, and the eccentric cam is inserted into the wear-resistant ring.

[0009] The beneficial effects of this utility model are that the loose crystal aligning machine of this utility model controls the flipping and posture adjustment of the wafer in all directions in the plane by setting a planar vibrating screen mechanism and a swing mechanism, avoiding the up-and-down vibration mode in the prior art, and in conjunction with the swing mechanism to move the loose crystal pile in the aligning tray to achieve full tray alignment, which has the advantages of high hole penetration rate and high aligning efficiency. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the assembly structure of a loose crystal arranging machine according to this utility model;

[0012] Figures 2 to 5 These are schematic diagrams of the partial structure of the entire array from different perspectives;

[0013] Figure 6 This is a schematic diagram of the installation structure of the drive shaft;

[0014] Figure 7 yes Figure 6 A magnified view of section A in the image.

[0015] In the diagram: 1. Mounting platform; 2. Alignment tray; 3. Mounting base; 4. Support; 5. Drive motor; 6. Drive shaft; 7. Eccentric cam; 8. Mounting bushing; 9. Swing hinge shaft; 10. First drive pin; 11. Second drive pin; 12. Swing drive screw; 13. Swing drive slider; 14. Swing drive motor; 15. Transverse guide rail; 16. Transverse slider; 17. Longitudinal guide rail; 18. Longitudinal slider; 19. Crystal cavity; 20. Air extraction connector; 21. Support sleeve; 22. Wear ring. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0018] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of the present invention pertain.

[0020] like Figures 1 to 7 As shown, this utility model provides a loose crystal arranging machine, which has several arranging sections on a mounting platform 1. Each arranging section includes an arranging disk 2 and an arranging device for driving the arranging disk 2. The arranging disk 2 is mounted on a mounting base 3. The arranging device includes a planar vibrating screen mechanism and a swinging mechanism.

[0021] The planar vibrating screen mechanism includes a transverse sliding mechanism, a longitudinal sliding mechanism, and a vibrating screen drive mechanism. The transverse sliding mechanism is installed on the mounting platform 1, the longitudinal sliding mechanism is installed on the transverse sliding mechanism, and the mounting base 3 is installed on the longitudinal sliding mechanism.

[0022] The vibrating screen drive mechanism includes a support 4 mounted on the mounting platform 1, a drive motor 5 vertically fixedly mounted on the support 4, and a drive shaft 6 connected to the output shaft of the drive motor 5. The drive shaft 6 is rotatably mounted on the mounting platform 1, and an eccentric cam 7 is provided at the upper end of the drive shaft 6. The bottom of the mounting base 3 is provided with a mounting bushing 8 that cooperates with the eccentric cam 7, and the eccentric cam 7 is fitted into the mounting bushing 8.

[0023] Several alignment units are arranged sequentially on the mounting platform 1, and each alignment unit is driven independently for alignment. This ensures that each alignment disk 2 adjusts the operation of the alignment machine according to the alignment status of the crystals. Compared with the traditional form where several alignment disks 2 share a single drive mechanism, this method has more flexible alignment arrangement capabilities and higher alignment efficiency.

[0024] In the alignment section, the alignment tray 2 is driven by a planar vibrating screen mechanism and a swinging mechanism, achieving vibration or shaking in the planar direction and vertical swinging, i.e., the alignment tray 2 simultaneously performs pitching motion. The planar vibrating screen motion allows the loose crystals in the alignment tray 2 to fine-tune their positions in various directions, increasing the probability of correct alignment and enabling faster alignment. Simultaneously, the swinging mechanism drives the pitching motion of the alignment tray 2, allowing the loose crystal pile in the alignment tray 2 to slide in various directions. The loose crystal pile can move to various locations on the surface of the alignment tray 2, and combined with the vibrating screen motion, the loose crystal pile traverses the surface of the alignment machine, greatly improving the efficiency of correct alignment of loose crystals.

[0025] Compared with traditional vibratory sorting, the planar vibrating screen mechanism of this application drives the output shaft of the drive motor 5 to rotate, which in turn drives the drive shaft 6 to rotate. The upper part of the drive shaft 6 is equipped with an eccentric cam 7, which is fitted into the mounting sleeve 8 of the mounting base 3. Therefore, the drive shaft 6 drives the mounting base 3 to perform circumferential "screening" in the planar direction along the up, down, left, and right directions. Since the sorting disc 2 is mounted on the mounting platform 1 through the transverse sliding mechanism and the longitudinal sliding mechanism, the sorting disc 2 can perform "screening" on the plane under the drive of the drive shaft 6. This "screening" is high frequency and low amplitude. Due to inertia, the crystals on the sorting disc 2 can uniformly and finely adjust their position relative to the sorting disc 2 in the up, down, left, and right directions in the plane, thereby improving the probability of being correctly sorted.

[0026] In the prior art, the alignment drive is mostly vertical vibration and left-right swaying motion. In this type of drive, loose crystals are prone to jumping in the alignment disk 2 and tend to move left and right. The motion pattern is relatively simple, and the probability of loose crystals being correctly aligned is much lower than that of the loose crystal state in the technical solution of this application.

[0027] The alignment tray 2 is rotatably mounted on the mounting base 3 via a swing hinge shaft 9. The swing mechanism includes a first drive pin 10, a second drive pin 11, and a swing drive module. The swing drive module includes a swing drive screw 12, a swing drive slider 13, and a swing drive motor 14. The swing drive slider 13 is mounted on the swing drive screw 12. The swing drive motor 14 drives the swing drive screw 12 to rotate, thereby causing the swing drive slider 13 to slide along the axial direction of the swing drive screw 12. The upper end of the swing drive screw 12 is rotatably mounted on one end of the alignment tray 2 via the first drive pin 10. The swing drive slider 13 is rotatably mounted on the mounting base 3 via the second drive pin 11.

[0028] The swing drive motor 14 of the swing mechanism drives the swing drive slider 13 to move axially along the swing drive screw 12, thereby causing the alignment tray 2 to swing in pitch along the swing hinge axis 9. The function of the swing mechanism is to allow the loose crystal pile on the alignment tray 2 to move at various points in the alignment tray 2. The swing mechanism does not require high-frequency swinging. The drive form of screw and slider can ensure that the pitch swing of the alignment tray 2 is smooth. Under this slow and large pitch swing, the loose crystal pile in the alignment tray 2 can slide stably on the surface under the action of gravity so as to completely cover the surface of the alignment tray 2. When the loose crystal pile slides to different positions on the surface of the alignment tray 2, it can be correctly aligned by the alignment machine under the drive of the "screen".

[0029] Existing crystal aligners often experience vertical vibrations that cause loose crystals to jump up or detach from the aligner's surface. This movement is chaotic and disordered, the loose crystal state is uncontrollable, the probability of loose crystals being correctly aligned is low, and it can easily cause already aligned crystals to shift. In contrast, this application uses a planar vibrating screen mechanism to stably fine-tune the attitude of loose crystals in various planar directions. The oscillating mechanism simply drives the loose crystal stack to slide smoothly without interfering with the planar adjustment of the loose crystal attitude. This approach increases the probability of loose crystals being correctly aligned, significantly improving the aligning efficiency of the aligner.

[0030] The lateral sliding mechanism includes a lateral guide rail 15 fixedly mounted on the mounting platform 1 and a lateral slider 16 slidably mounted on the lateral guide rail 15; the longitudinal sliding mechanism includes a longitudinal guide rail 17 fixedly mounted on the lateral slider 16 and a longitudinal slider 18 slidably mounted on the longitudinal guide rail 17, and the mounting base 3 is fixedly mounted on the longitudinal slider 18.

[0031] The mounting base 3 has complete freedom of movement in the planar direction through the transverse sliding mechanism and the longitudinal sliding mechanism. Driven by the vibrating screen drive mechanism, it can flexibly realize the "screening" movement of each degree of freedom in the plane, ensuring the efficient alignment of loose crystals.

[0032] The aligning tray 2 has a box structure. A crystal cavity 19 is provided on the upper surface of the aligning tray 2. An adsorption hole is provided in the middle of the crystal cavity 19. The adsorption hole is connected to the inner cavity of the aligning tray 2. An air extraction connector 20 is provided at the bottom of the aligning tray 2. The air extraction connector 20 is connected to the inner cavity of the aligning tray 2.

[0033] When the alignment machine is working, the air extraction connector 20 on the alignment tray 2 is connected to a vacuum pump. The vacuum pump continuously extracts air, so that the adsorption orifice of the crystal cavity 19 is in a low-pressure state. When the loose crystals are "screened" on the crystal cavity 19 and their posture is adjusted, when the posture is adjusted to be suitable at a certain moment and the loose crystals and the crystal cavity 19 match, the loose crystals will be immediately adsorbed by the adsorption orifice and fixed in the crystal cavity 19. This completes the correct alignment.

[0034] The mounting platform 1 is provided with a support sleeve 21, and the drive shaft 6 is rotatably installed in the support sleeve 21; the bottom opening of the mounting bushing 8 is provided and a wear-resistant ring 22 is provided inside it, and the eccentric cam 7 is inserted into the wear-resistant ring 22.

[0035] During rotation, the drive shaft 6 is subjected to radial force due to the presence of the upper eccentric cam 7, which may easily cause vibration or shaking. The support sleeve 21 can stabilize the drive shaft 6 radially, ensuring its smooth operation and preventing vibration or shaking. The upper eccentric cam 7 of the drive shaft 6 is inserted into the wear-resistant ring 22, which can drive the mounting sleeve 8 to rotate in a plane along the circumference in a "screening" motion. The wear-resistant ring 22 can ensure reliable hard contact with the eccentric cam 7, has high wear resistance, and ensures that the eccentric cam 7 can reliably drive the mounting sleeve 8 to move continuously.

[0036] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A planar vibrating screen mechanism for a lining machine, wherein a mounting base (3) mounted on a mounting platform (1) is driven by a vibrating screen drive mechanism, characterized in that: The vibrating screen drive mechanism includes a support (4) mounted on the mounting platform (1), a drive motor (5) vertically fixed on the support (4), and a drive shaft (6) connected to the output shaft of the drive motor (5). The drive shaft (6) is rotatably mounted on the mounting platform (1), and an eccentric cam (7) is provided at the upper end of the drive shaft (6). The bottom of the mounting base (3) is provided with a mounting bushing (8) that matches the shape of the eccentric cam (7), and the eccentric cam (7) is fitted into the mounting bushing (8).

2. The planar vibrating screen mechanism of the alignment machine as described in claim 1, characterized in that: It also includes a lateral sliding mechanism and a longitudinal sliding mechanism, wherein the lateral sliding mechanism is mounted on the mounting platform (1), the longitudinal sliding mechanism is mounted on the lateral sliding mechanism, and the mounting base (3) is mounted on the longitudinal sliding mechanism.

3. The planar vibrating screen mechanism of the alignment machine as described in claim 2, characterized in that: The transverse sliding mechanism includes a transverse guide rail (15) fixedly mounted on the mounting platform (1) and a transverse slider (16) slidably mounted on the transverse guide rail (15); the longitudinal sliding mechanism includes a longitudinal guide rail (17) fixedly mounted on the transverse slider (16) and a longitudinal slider (18) slidably mounted on the longitudinal guide rail (17), and the mounting base (3) is fixedly mounted on the longitudinal slider (18).

4. The planar vibrating screen mechanism of the alignment machine as described in claim 3, characterized in that: The mounting platform (1) is provided with a support sleeve (21), and the drive shaft (6) is rotatably installed in the support sleeve (21); the bottom opening of the mounting bushing (8) is provided and a wear-resistant ring (22) is provided inside it, and the eccentric cam (7) is inserted into the wear-resistant ring (22).

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