Stable feeding structure for epoxy molding compound production

Abstract

The utility model relates to the technical field of epoxy molding compound production, in particular to a stable feeding structure for epoxy molding compound production, which comprises a feeding hopper, the upper end of the feeding hopper is communicated with a buffer tank through a material passing pipe, a first buffer plate is arranged below the material passing pipe in the feeding hopper, the upper end of the first buffer plate is connected with a first rotating shaft, and the lower end of the first rotating shaft is connected with a second rotating shaft. The first rotating shaft is sleeved with a torsional spring, penetrates through the side wall of the feeding hopper and is connected with a first gear located on the outer side of the feeding hopper, a transmission shaft is arranged on one side of the first rotating shaft, and the transmission shaft is connected with a second gear meshed with the first gear; a second rotating shaft rotationally connected with the inner side wall of the feeding hopper is arranged below the first buffer plate, one end of the second rotating shaft penetrates through the side wall of the feeding hopper and is in transmission connection with the transmission shaft, the second rotating shaft is in transmission connection with the transmission shaft through a belt, and a plurality of second buffer plates are arranged on the side wall of the second rotating shaft at equal angles; according to the utility model, the quality of products in the same batch is more uniform.

Description

Technical Field

[0001] This utility model relates to the field of epoxy molding compound production technology, and in particular to a stable feeding structure for epoxy molding compound production. Background Technology

[0002] In the production of epoxy molding compounds, the material needs to be conveyed and fed into the extruder through a buffer tank. When the material is discharged from the buffer tank, the pressure is not completely released at the moment of discharge. The large flow rate and the drop and pressure difference during discharge cause a large impact force on the material, resulting in fluctuations in the volume of feeding directly below. The actual feeding will be larger, and the balance in the extruder will be broken, which can easily lead to uneven quality within a batch.

[0003] For example, on December 4, 2013, a patent with announcement number CN203317728U, entitled "A Twin-Screw Extruder for the Production of Epoxy Molding Plastics", was published. It includes a closed barrel and twin screws. The twin screws are located inside the barrel, and a discharge port is provided at the bottom of the barrel at the material extrusion end. A feeding hopper is provided on the twin screws. However, the applicant found that the material enters the extruder through the feeding hopper, and the material is prone to fluctuation when entering the feeding hopper, which reduces the quality of the produced products. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a stable feeding structure for epoxy molding compound production, so as to solve the problem of reduced product quality.

[0005] Based on the above objectives, this utility model provides a stable feeding structure for epoxy molding compound production, including a feeding hopper. The upper end of the feeding hopper is connected to a buffer tank via a feed pipe. A first buffer plate is disposed inside the feeding hopper below the feed pipe. The upper end of the first buffer plate is connected to a first rotating shaft rotatably connected to the side wall of the feeding hopper. A torsion spring is sleeved on the first rotating shaft. The first rotating shaft is located on one side of the feed pipe and passes through the side wall of the feeding hopper. The first rotating shaft is connected to a first gear located on the outside of the feeding hopper. A drive shaft is disposed on one side of the first rotating shaft. A second gear coaxially connected to the drive shaft and meshing with the first gear is connected to the drive shaft. A second rotating shaft is disposed below the first buffer plate and rotatably connected to the inner side wall of the feeding hopper. One end of the second rotating shaft passes through the side wall of the feeding hopper and is connected to the drive shaft. Multiple second buffer plates are disposed at equal angles on the side wall of the second rotating shaft.

[0006] Optionally, a high-level probe and a low-level probe are provided inside the feeding hopper, and a controller connected to the high-level probe and the low-level probe is provided outside the feeding hopper. The high-level probe is located diagonally below the second buffer plate, and the low-level probe is located below the high-level probe.

[0007] Optionally, a first side thickening plate is provided on one side wall of the feeding hopper facing the first buffer plate, and an upper thickening plate is provided on the top of the feeding hopper connected to the upper end of the first side thickening plate. The upper thickening plate is located on one side of the feed pipe. A second side thickening plate is provided in the middle of the feeding hopper. Guide plates are provided on the inner side wall of the feeding hopper at both the upper and lower ends of the second side thickening plate. The thickness of the end of the guide plate away from the second side thickening plate is less than the thickness of the end of the guide plate connected to the second side thickening plate.

[0008] Optionally, a twin-screw feeder is provided at the lower end of the feeding hopper.

[0009] Optionally, the second rotating shaft is connected to the drive shaft via a belt.

[0010] Optionally, an outer cover is provided on the outer wall of the feeding hopper, and both the first gear and the second gear are located inside the outer cover.

[0011] Optionally, a movable cylinder located on one side of the drive shaft is provided inside the outer casing. The telescopic end of the movable cylinder is connected to a reduction motor, the output end of the reduction motor is connected to a rotating shaft, a locking block is provided at the end of the rotating shaft, and a locking groove that cooperates with the locking block is provided at the end of the drive shaft.

[0012] Optionally, the drive shaft is connected to a speed regulator, which is provided with a first speed ring and a second speed ring. The speed of the first speed ring is less than the speed of the second speed ring. The first speed ring is connected to the drive shaft, and the drive shaft is connected to a second rotating shaft via the second speed ring on the speed regulator. The second speed ring and the second rotating shaft are connected via the belt drive.

[0013] Optionally, a dust collector is provided on one side of the buffer tank, and the upper end of the feeding hopper and the upper end of the buffer tank are both connected to the dust collector through vent pipes.

[0014] The beneficial effects of this utility model: This utility model provides a stable feeding structure for epoxy molding compound production. Particulate material in the buffer tank enters the feeding hopper through a feed pipe. The particulate material impacts the first buffer plate, which reduces the impact force. This causes the first buffer plate and the first rotating shaft to rotate clockwise. Through the meshing of the first and second gears, the transmission shaft rotates counterclockwise, causing the second rotating shaft and the second buffer plate on its side wall to rotate counterclockwise. The counterclockwise rotation of the second buffer plate further reduces the impact force of the particulate material. After a period of time, under the action of the torsion spring, the first buffer plate and the first rotating shaft rotate counterclockwise. The angle of the first buffer plate changes from a steep state to a small and gentle state. Through the meshing transmission of the first gear and the second gear, the transmission shaft rotates clockwise, driving the second rotating shaft and the second buffer plate on the side wall of the second rotating shaft to rotate clockwise. The clockwise rotating second buffer plate transports granular materials and also reduces the impact force. In this way, the feeding at the bottom of the feeding hopper is less prone to fluctuations, which makes it easier for the quality of products in the same batch to be more uniform and enables more stable feeding of granular materials. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the feeding hopper of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the outer casing of this utility model.

[0019] In the diagram: 1. Feed hopper; 2. Feed pipe; 3. Feeding twin screw; 4. First buffer plate; 5. First rotating shaft; 6. Second rotating shaft; 7. Second buffer plate; 8. First gear; 9. Second gear; 10. Drive shaft; 11. Belt; 12. High level probe; 13. Low level probe; 14. Upper thickened plate; 15. First side thickened plate; 16. Second side thickened plate; 17. Dust collector; 18. Buffer tank. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 3 As shown, a stable feeding structure for epoxy molding compound production includes a feeding hopper 1. The upper end of the feeding hopper 1 is connected to a buffer tank 18 via a feed pipe 2. The lower end of the feeding hopper 1 is connected to an extruder via a twin-screw feeder 3. The upper end of the buffer tank 18 is connected to a feed pipe, and a switch valve is installed on the feed pipe. Granular material enters the buffer tank 18 through the feed pipe. A first buffer plate 4 is installed inside the feeding hopper 1 below the feed pipe 2. The upper end of the first buffer plate 4 is connected to a first rotating shaft 5, which is rotatably connected to the side wall of the feeding hopper 1. A torsion spring is sleeved on the first rotating shaft 5, and both ends of the torsion spring are connected to the first buffer plate 4 and the feeding hopper 1, respectively. Shaft 5 is located on one side of the feed pipe 2. The first rotating shaft 5 passes through the side wall of the feed hopper 1. The first rotating shaft 5 is connected to a first gear 8 located on the outside of the feed hopper 1. A transmission shaft 10 is provided on one side of the first rotating shaft 5. A second gear 9, which meshes and drives the first gear 8, is coaxially connected to the transmission shaft 10. A second rotating shaft 6, which is rotatably connected to the inner side wall of the feed hopper 1, is provided below the first buffer plate 4. One end of the second rotating shaft 6 passes through the side wall of the feed hopper 1 and is driven by the transmission shaft 10. The second rotating shaft 6 is driven by the transmission shaft 10 through a belt 11. Multiple second buffer plates 7 are provided at equal angles on the side wall of the second rotating shaft 6.

[0023] The granular material in the buffer tank 18 enters the feeding hopper 1 through the feed pipe 2. The granular material impacts the first buffer plate 4, which weakens the impact force. This causes the first buffer plate 4 and the first rotating shaft 5 to rotate clockwise. Through the meshing of the first gear 8 and the second gear 9, the transmission shaft 10 rotates counterclockwise, causing the second rotating shaft 6 and the second buffer plate 7 on the side wall of the second rotating shaft 6 to rotate counterclockwise. The counterclockwise rotation of the second buffer plate 7 further weakens the impact force of the granular material. After a period of time, under the action of the torsion spring, the first buffer plate 5 is further weakened. The punch plate 4 and the first rotating shaft 5 rotate counterclockwise and clockwise, and the angle of the first buffer plate 4 changes from a steep state to a small and gentle state. Through the meshing transmission of the first gear 8 and the second gear 9, the transmission shaft 10 rotates clockwise, which drives the second rotating shaft 6 and the second buffer plate 7 on the side wall of the second rotating shaft 6 to rotate clockwise. The clockwise rotating second buffer plate 7 transports granular materials and also reduces the impact force. In this way, the feeding at the lower end of the feeding hopper 1 is less prone to fluctuations, which makes it easier for the quality of products in the same batch to be more uniform and enables more stable feeding of granular materials.

[0024] The feeding hopper 1 is equipped with a high-level probe 12 and a low-level probe 13. A controller connected to the high-level probe 12 and the low-level probe 13 is provided on the outside of the feeding hopper 1. The high-level probe 12 is located diagonally below the second buffer plate 7, and the low-level probe 13 is located below the high-level probe 12. The high-level probe 12 and the low-level probe 13 facilitate the detection of whether there are particulate materials at the positions of the high-level probe 12 and the low-level probe 13 in the feeding hopper 1.

[0025] A first side thickening plate 15 is provided on one side wall of the feeding hopper 1 facing the first buffer plate 4. An upper thickening plate 14 is provided on the top of the feeding hopper 1 and connected to the upper end of the first side thickening plate 15. The upper thickening plate 14 is located on one side of the feed pipe 2. A second side thickening plate 16 is provided in the middle of the feeding hopper 1. Guide plates are provided on the inner side wall of the feeding hopper 1 at both the upper and lower ends of the second side thickening plate 16. The thickness of the end of the guide plate away from the second side thickening plate 16 is less than the thickness of the end of the guide plate connected to the second side thickening plate 16. The arrangement of the upper thickening plate 14, the first side thickening plate 15 and the second side thickening plate 16 helps to improve the strength of the feeding hopper 1.

[0026] The lower end of the feeding hopper 1 is provided with a feeding twin screw 3, which facilitates the conveying of granular material from the bottom of the feeding hopper 1 to the extruder.

[0027] An outer cover is provided on the outer wall of the feeding hopper 1. The first gear 8 and the second gear 9 are both located inside the outer cover, and the belt 11 is also located inside the outer cover, which facilitates the protection of the first gear 8 and the second gear 9.

[0028] The outer casing contains a movable cylinder located on one side of the drive shaft 10. The telescopic end of the movable cylinder is connected to a reduction motor, and the output end of the reduction motor is connected to a rotating shaft. A locking block is provided at the end of the rotating shaft, and a locking groove is provided at the end of the drive shaft 10 to cooperate with the locking block. The extension of the movable cylinder controls the rotating shaft to move towards the drive shaft 10 until the locking block and the locking groove cooperate. After the locking block and the locking groove cooperate, the reduction motor starts, driving the rotating shaft to rotate, thus rotating the drive shaft 10. When there is granular material accumulation on the first buffer plate 4 or the second buffer plate 7, it is convenient to clean the granular material and reduce the accumulation of granular material.

[0029] The drive shaft 10 is connected to a speed regulator, which is provided with a first speed ring and a second speed ring. The speed of the first speed ring is less than the speed of the second speed ring. The first speed ring is connected to the drive shaft 10 and is set at the same speed as the drive shaft 10. The drive shaft 10 is connected to the second rotating shaft 6 through the second speed ring on the speed regulator. The second speed ring is connected to the second rotating shaft 6 through the belt 11. When the first rotating shaft 5 swings slightly, it can drive the second rotating shaft 6 to rotate in both directions.

[0030] A dust collector 17 is installed on one side of the buffer tank 18. The dust collector 17 can be placed on the ground. The upper end of the feeding hopper 1 and the upper end of the buffer tank 18 can be connected to the dust collector 17 through a vent pipe. A controller electrically connected to the dust collector 17 is installed on one side of the feeding hopper 1. The controller facilitates the control of the dust collector 17, realizes a slight negative pressure, reduces dust in the feeding hopper 1 and the buffer tank 18, and reduces dust pollution. Switch valves are also installed on the feed pipe 2 and the two vent pipes. The switch valves are electrically connected to the controller. Ball valves can be selected as the switch valves.

[0031] There is a certain height difference between the feeding hopper 1 and the buffer tank 18 above it, and both are enclosed spaces. The pressure is not completely released at the moment of unloading. The flow rate is large during unloading, and the height difference and pressure difference can easily cause the impact force of granular materials to be large. The setting of the first buffer plate 4 and the second buffer plate 7 reduces the impact force.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0033] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structure for stable feeding in epoxy molding compound production, comprising a feeding hopper, characterized in that, The upper end of the feeding hopper is connected to a buffer tank via a feed pipe. A first buffer plate is installed inside the feeding hopper below the feed pipe. The upper end of the first buffer plate is connected to a first rotating shaft that is rotatably connected to the side wall of the feeding hopper. A torsion spring is fitted around the first rotating shaft. The first rotating shaft is located on one side of the feed pipe and passes through the side wall of the feeding hopper. The first rotating shaft is connected to a first gear located on the outside of the feeding hopper. A drive shaft is installed on one side of the first rotating shaft. A second gear that meshes and drives the first gear is coaxially connected to the drive shaft. A second rotating shaft that is rotatably connected to the inner side wall of the feeding hopper is installed below the first buffer plate. One end of the second rotating shaft passes through the side wall of the feeding hopper and is driven by the drive shaft. Multiple second buffer plates are installed at equal angles on the side wall of the second rotating shaft.

2. The structure for stable feeding in epoxy molding compound production according to claim 1, characterized in that, The feeding hopper is equipped with a high-level probe and a low-level probe. A controller connected to the high-level probe and the low-level probe is provided on the outside of the feeding hopper. The high-level probe is located diagonally below the second buffer plate, and the low-level probe is located below the high-level probe.

3. The structure for a stable feeder in epoxy molding compound production according to claim 1, characterized in that, A first side thickening plate is provided on one side wall of the feeding hopper facing the first buffer plate. An upper thickening plate is provided on the top of the feeding hopper and connected to the upper end of the first side thickening plate. The upper thickening plate is located on one side of the feed pipe. A second side thickening plate is provided in the middle of the feeding hopper. Guide plates are provided on the inner side wall of the feeding hopper at both the upper and lower ends of the second side thickening plate. The thickness of the end of the guide plate away from the second side thickening plate is less than the thickness of the end of the guide plate connected to the second side thickening plate.

4. The structure for stable feeding in epoxy molding compound production according to claim 1, characterized in that, The lower end of the feeding hopper is equipped with a twin-screw feeder.

5. The structure for a stable feeder in epoxy molding compound production according to claim 1, characterized in that, The second rotating shaft is connected to the drive shaft via a belt.

6. The structure for a stable feeder in epoxy molding compound production according to claim 1, characterized in that, An outer cover is provided on the outer wall of the feeding hopper, and the first gear and the second gear are both located inside the outer cover.

7. The structure for a stable feeder in epoxy molding compound production according to claim 6, characterized in that, The outer casing contains a movable cylinder located on one side of the drive shaft. The telescopic end of the movable cylinder is connected to a reduction motor, the output end of the reduction motor is connected to a rotating shaft, the end of the rotating shaft is provided with a locking block, and the end of the drive shaft is provided with a locking groove that cooperates with the locking block.

8. The structure for a stable feeder in epoxy molding compound production according to claim 1, characterized in that, The drive shaft is connected to a speed regulator, which has a first speed ring and a second speed ring. The speed of the first speed ring is less than the speed of the second speed ring. The first speed ring is connected to the drive shaft, and the drive shaft is connected to a second rotating shaft via the second speed ring on the speed regulator.

9. The structure for a stable feeder in epoxy molding compound production according to claim 1, characterized in that, A dust collector is installed on one side of the buffer tank, and the upper end of the feeding hopper and the upper end of the buffer tank are both connected to the dust collector through vent pipes.

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