Epoxy molding compound screening device

Abstract

The utility model discloses an epoxy molding compound screening device which comprises an outer cylinder, a bearing device is arranged in the outer cylinder, a support is fixedly connected to the outer wall of the outer cylinder, a lifting screening device is arranged on the support and can fall on the bearing device, and a limiting device is arranged on the inner wall of the outer cylinder. The utility model belongs to the technical field of epoxy molding compound screening, and particularly relates to an epoxy molding compound screening and filtering device which solves the problem that epoxy molding compounds are inconvenient to pour out after being screened in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of epoxy molding plastic screening, in particular to an epoxy molding plastic screening device. Background Art

[0002] Epoxy molding compound is a material used in semiconductor chip packaging technology. It is a powdered molding compound made of epoxy resin as the base resin, high-performance phenolic resin as the curing agent, silicon micropowder as the filler, and a variety of additives. In order to increase the utilization rate of epoxy molding compound, the discarded epoxy molding compound will be recycled and can be used as a filler to blend with thermoplastic plastics to prepare composite materials.

[0003] After recycling, epoxy molding plastics need to be screened to remove impurities. Epoxy molding plastics are in granular form. When screening them, they are mostly placed in a screening net for screening. However, the existing screening nets have some shortcomings when screening epoxy molding plastics: the epoxy molding plastics after screening are not easy to pour out, so improvements are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is that it is inconvenient to pour out the epoxy molding plastic after the epoxy molding plastic is screened in the prior art.

[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: an epoxy molding plastic screening device comprises an outer cylinder, a supporting device is provided inside the outer cylinder, a bracket is fixedly connected to the outer wall of the outer cylinder, a lifting screening device is provided on the bracket and can fall on the supporting device, and a limiting device is provided on the inner wall of the outer cylinder; the lifting screening device comprises a stand, the stand is fixedly connected to the upper end of the bracket, a motor is provided on the stand, a gear is provided at the output end of the motor, a connecting shaft passes through the bracket, a tooth column is provided at the upper end of the connecting shaft and is meshed with the gear, a hydraulic cylinder is provided on the stand and is connected to the tooth column, a connecting plate is provided at the lower end of the connecting shaft, a filter cartridge is provided on the connecting plate, the filter cartridge is arranged with openings at both ends, the filter cartridge is driven to rotate by the connecting shaft, the filter cartridge can perform rotary screening on the epoxy molding plastic particles, and the epoxy molding plastic can be leaked from the lower end by lifting the filter cartridge after screening, thereby completing the unloading of the epoxy molding plastic.

[0006] Furthermore, the supporting device includes a filter screen, which is arranged at the inner bottom end of the outer cylinder. A pillar is fixedly connected to the center of the filter screen. A support plate is provided at the upper end of the support plate, and the filter cartridge can just fall on the support plate. During screening, the lower end of the filter cartridge falls on the support plate, which can prevent the epoxy molding material from leaking. After the screening is completed, the filter cartridge moves up to complete the unloading of the epoxy molding material, which is very convenient.

[0007] Furthermore, the limiting device includes a frame, which is fixed to the inner wall of the outer cylinder and has multiple groups of circular arrays. A limiting roller is rotatably arranged on the frame, and the limiting roller is tightly attached to the outer wall of the filter cylinder. By setting the limiting roller, the filter cylinder can be ensured to be relatively stable during rotary screening.

[0008] Preferably, a limit plate is provided at the output end of the hydraulic cylinder, and the limit plate is located inside the gear column and coaxial with the gear column. The gear column can rotate on the limit plate, and the limit plate can pull the gear column up and down.

[0009] Preferably, the upper end surface of the support plate is configured in a pointed cone shape, so as to ensure that no residue remains on the support plate when the epoxy molding compound is unloaded.

[0010] Preferably, when the filter cartridge is seated on the supporting plate, the topmost portion of the supporting plate is spaced apart from the connecting plate.

[0011] The utility model adopts the above structure to achieve the following beneficial effects:

[0012] 1. The utility model can realize rotary filtration of epoxy molding plastic by arranging a lifting filtration device. At the same time, after filtration, the filter cartridge is lifted to facilitate the epoxy molding plastic to leak out from the lower end of the filter cartridge and finally leak out from the lower end of the outer cartridge.

[0013] 2. The utility model can ensure that when the epoxy molding plastic is screened, the lower end of the filter cartridge is in a closed state and the epoxy molding plastic will not leak out by providing a supporting device, and can ensure that the filter cartridge will not shake when rotating by providing a limiting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall stereogram of an epoxy molding compound screening device of the utility model;

[0015] Figure 2 It is a bottom view of a filter cartridge of an epoxy molding plastic filtration device of the utility model;

[0016] Figure 3 FIG is a top view of the cross-section of the outer cylinder;

[0017] Figure 4 A three-dimensional diagram of a pallet;

[0018] Figure 5 It is a structural diagram of the output end of the hydraulic cylinder.

[0019] Among them, 1. outer cylinder, 2. supporting device, 3. bracket, 4. lifting and lowering screening device, 5. limiting device, 6. stand, 7. motor, 8. gear, 9. connecting shaft, 10. gear column, 11. hydraulic cylinder, 12. connecting plate, 13. filter cartridge, 14. filter screen, 15. pillar, 16. support plate, 17. frame, 18. limiting roller, 19. limiting plate. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] like Figure 1-5 The utility model discloses an epoxy molding plastic screening device, comprising an outer cylinder 1, a supporting device 2 is arranged inside the outer cylinder 1, a bracket 3 is fixedly connected to the outer wall of the outer cylinder 1, a lifting screening device 4 is arranged on the bracket 3 and can fall on the supporting device 2, and a limiting device 5 is arranged on the inner wall of the outer cylinder 1;

[0023] like Figure 1-2 The lifting and lowering screening device 4 includes a stand 6, which is fixed to the upper end of the bracket 3. A motor 7 is provided on the stand 6. A gear 8 is provided at the output end of the motor 7. A connecting shaft 9 runs through the bracket 3. A gear column 10 is provided at the upper end of the connecting shaft 9 and is meshed with the gear 8. A hydraulic cylinder 11 is provided on the stand 6 and is connected to the gear column 10. A limit plate 19 is provided at the output end of the hydraulic cylinder 11. The limit plate 19 is located inside the gear column 10 and is coaxial with the gear column 10. The gear column 10 can rotate on the limit plate 19. The limit plate 1 9 can pull the tooth column 10 up and down, and the lower end of the connecting shaft 9 is provided with a connecting plate 12. When the filter cartridge 13 is located on the supporting plate 16, the top of the supporting plate 16 is at a distance from the connecting plate 12. The connecting plate 12 is provided with a filter cartridge 13, and the filter cartridge 13 is set with both ends open. The filter cartridge 13 is driven to rotate by the connecting shaft 9, and the filter cartridge 13 can perform rotary screening on the epoxy molding plastic particles. After screening, the epoxy molding plastic can be leaked from the lower end by lifting the filter cartridge 13, thereby completing the unloading of the epoxy molding plastic.

[0024] like Figure 1 and 4 The supporting device 2 includes a filter 14, which is arranged at the inner bottom end of the outer tube 1. A pillar 15 is fixedly connected to the center of the filter 14. A support plate 16 is arranged at the upper end of the pillar 15. The upper end surface of the support plate 16 is arranged in a pointed cone shape. When unloading the epoxy molding plastic, it can be ensured that no residue will remain on the support plate 16. The filter cartridge 13 can just fall on the support plate 16. During screening, the lower end of the filter cartridge 13 falls on the support plate 16 to avoid leakage of the epoxy molding plastic. After screening, the filter cartridge 13 moves up to complete the unloading of the epoxy molding plastic, which is very convenient.

[0025] like Figure 3 The limiting device 5 includes a frame 17, which is fixed to the inner wall of the outer cylinder 1 and has multiple groups of circular arrays. A limiting roller 18 rotates on the frame 17, and the limiting roller 18 is tightly attached to the outer wall of the filter cylinder 13. By setting the limiting roller 18, the filter cylinder 13 can be ensured to be relatively stable during rotary screening.

[0026] During specific use, when the epoxy molding plastic is screened, the raw materials are added to the filter cartridge 13. At this time, the lower end of the filter cartridge 13 is tightly attached to the support plate 16. After the addition is completed, the motor 7 is started, and the gear 8 engages the tooth column 10 to rotate. The tooth column 10 drives the connecting shaft 9 to rotate. The upper end of the tooth column 10 will rotate in the limit plate 19, and the connecting shaft 9 drives the connecting plate 12. The connecting plate 12 drives the filter cartridge 13 to rotate, so that the epoxy molding plastic can be rotationally screened, and the screened impurities are discharged through the lower outlet of the outer cylinder 1.

[0027] When the filter cartridge 13 rotates, the outer wall of the filter cartridge 13 will be tightly attached to the limiting roller 18 to ensure that the filter cartridge 13 does not shake when rotating. After the screening is completed, the motor 7 is stopped and the hydraulic cylinder 11 is started. The hydraulic cylinder 11 pulls the limiting plate 19, and the limiting plate 19 pulls the gear column 10. The connecting shaft 9 will pull the filter cartridge 13 upward, so that there will be a gap between the filter cartridge 13 and the support plate 16, and the epoxy molding plastic will leak from the gap and finally be discharged from the lower end of the outer cylinder 1. Since the upper end of the support plate 16 is in a pointed cone shape, no epoxy molding plastic will remain on the support plate 16, so that the epoxy molding plastic can be poured out very completely.

[0028] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An epoxy molding compound screening device, comprising an outer cylinder, characterized in that: A supporting device is provided inside the outer cylinder, a bracket is fixedly connected to the outer wall of the outer cylinder, a lifting and filtering device is provided on the bracket and can fall on the supporting device, and a limiting device is provided on the inner wall of the outer cylinder; The lifting and filtering device comprises a stand, the stand is fixed to the upper end of the bracket, a motor is arranged on the stand, a gear is arranged at the output end of the motor, a connecting shaft runs through the bracket, a tooth column is arranged at the upper end of the connecting shaft and meshes with the gear, a hydraulic cylinder is arranged on the stand and connected with the tooth column, a connecting plate is arranged at the lower end of the connecting shaft, a filter cartridge is arranged on the connecting plate, and the filter cartridge is arranged with openings at both ends; The supporting device includes a filter screen, which is arranged at the inner bottom end of the outer cylinder. A pillar is fixedly connected to the center of the filter screen. A support plate is provided at the upper end of the pillar. The upper end surface of the support plate is arranged in a pointed cone shape, and the filter cartridge can just fall on the support plate.

2. The epoxy molding compound screening device according to claim 1, characterized in that: The limiting device comprises a frame, which is fixed to the inner wall of the outer cylinder and has a plurality of groups arranged in a circumferential array. A limiting roller is rotatably arranged on the frame, and the limiting roller is tightly attached to the outer wall of the filter cylinder.

3. The epoxy molding compound screening device according to claim 1, characterized in that: A limit plate is provided at the output end of the hydraulic cylinder. The limit plate is located inside the gear column and is coaxial with the gear column.

4. The epoxy molding compound screening device according to claim 1, characterized in that: When the filter cartridge is seated on the supporting plate, the top of the supporting plate is at a distance from the connecting plate.

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