A plastic pellet feeding device with preheating function

Abstract

This utility model discloses a plastic granule feeding device with preheating function, including a base, a buffer box, a tray, a heating ring, a lifting component, and a driving component. The lifting component is installed on the top of the base, and the driving component is installed inside the buffer box. When the driving component is running, it drives the plastic granules to move within the buffer box for preheating. This utility model uses a negative pressure pump connected to a suction pipe at the top of the buffer box to suck the plastic granules into its internal cavity. The inner wall of the cavity is heated by heating rings spaced at equal intervals. At the same time, a motor drives a roller shaft with a spiral conveying plate to rotate, which pushes the plastic granules and performs preheating during the pushing process. In addition, it also has a certain stirring and mixing effect on the preheated plastic granules.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, specifically to a plastic granule feeding device with preheating function. Background Technology

[0002] In the production of plastic products, the feeding of plastic granules is a crucial preliminary step. Traditional feeding methods typically use simple conveying devices or manual feeding to directly feed plastic granules at room temperature into the hopper of an injection molding machine or extruder for heating and melting.

[0003] This direct feeding method has significant drawbacks: First, after the cold plastic granules enter the processing equipment, the equipment needs to consume a large amount of additional energy and time to heat them from room temperature to the melting point. This not only increases production energy consumption and costs but also reduces production efficiency. Second, for highly hygroscopic plastic materials (such as PET and PA), the trace amounts of moisture contained in the granules can easily cause bubbles or silver streaks in the finished product during rapid heating, affecting product quality. Furthermore, directly mixing granules from different batches or of different colors may result in uneven mixing.

[0004] To address the aforementioned issues, some preheating feeding devices have emerged in the prior art. However, these devices are typically complex in structure, have poor preheating effects, and offer limited functionality. For instance, some devices have a fixed preheating chamber height, making it difficult to flexibly adapt to feed inlets of devices with varying heights. Their internal preheating mechanisms are often simply heating plates, leading to uneven heating of the material and potential for localized overheating or insufficient preheating. Furthermore, the overall modularity of the equipment is low, hindering the rapid disassembly, cleaning, and maintenance of the core preheating components. Therefore, this paper proposes a plastic granule feeding device with a preheating function. Utility Model Content

[0005] The purpose of this invention is to provide a plastic granule feeding device with a preheating function to solve the problems mentioned in the background art, such as uneven preheating leading to different degrees of heating of granules and low thermal energy utilization.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A plastic granule feeding device with preheating function includes a base, a buffer box, a tray, a heating ring, a lifting component, and a driving component. The lifting component is installed on the top of the base, and the driving component is installed inside the buffer box. When the driving component is running, it drives the plastic granules to move inside the buffer box for preheating treatment.

[0008] Preferably, the driving assembly includes a second motor, a spiral conveyor plate, and a roller. The roller is provided inside the buffer box, and the spiral conveyor plate is provided on the surface of the roller. The roller is driven by the second motor outside the buffer box.

[0009] Preferably, the buffer box has an internal cavity, the inner wall of the cavity is in contact with the outer end of the spiral conveyor plate, the inner wall of the cavity is provided with equidistant heating rings connected in series, the top of the buffer box has a feeding groove that communicates with the cavity, and the side of the buffer box has a discharge pipe that is connected to the cavity.

[0010] Preferably, the top of the buffer box is equipped with a negative pressure pump, the output end of the negative pressure pump is connected to the feed trough through the feed pipe, and the input end of the negative pressure pump is connected to the suction pipe.

[0011] Preferably, the lifting assembly includes a motor, a lead screw, a side plate, a guide groove, a threaded block, a slide rod, and a slider. The top of the base is fixedly connected to symmetrical side plates. The side plates have guide grooves inside. A lead screw is installed inside one of the guide grooves. The lead screw is driven by the motor at the top of the side plate. A threaded block is threadedly connected to the surface of the lead screw. One side of the threaded block is fixedly connected to the support plate. A slide rod is fixedly connected inside the guide groove on the other side. A slider is slidably connected to the surface of the slide rod. The slider is fixedly connected to the other side of the support plate.

[0012] Preferably, a fixing frame is fixedly connected to the top of the tray by bolts, and a buffer box is snapped into the inside of the fixing frame. The surface of the tray is provided with matching threaded holes.

[0013] Preferably, a PLC control panel is installed on the top of the base, and the PLC control panel is connected to the negative pressure pump, motor one, heating ring and motor two.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a negative pressure pump connected to a suction pipe at the top of the buffer tank to suck plastic granules into its internal cavity. The inner wall of the cavity is heated by heating rings spaced at equal intervals. At the same time, a roller shaft with a spiral conveying blade is driven by a motor to rotate, which pushes the plastic granules and performs preheating treatment during the pushing process. In addition, the preheated plastic granules also have a certain stirring and mixing effect.

[0016] 2. This utility model features symmetrical side plates on the top of the base. One side plate has a lead screw connecting a threaded block and a support plate, while the other side plate has a slide rod connecting a slider and a support plate. A motor on the top of the side plate drives the lead screw to rotate, causing the support plate to move up and down, thereby realizing the lifting and moving of the buffer box. This facilitates the movement of preheated plastic granules to different heights, making it convenient for actual output.

[0017] 3. This utility model uses threaded holes on the top of the tray to fix the mounting bracket with bolts. The top of the mounting bracket is snapped onto the surface of the buffer box, which facilitates the installation, disassembly and cleaning of the buffer box. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the side plate and support plate according to an embodiment of the present utility model;

[0020] Figure 3 This is a cross-sectional view of the buffer box according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the drive component according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the tray and fixing frame according to an embodiment of the present utility model.

[0023] In the diagram: 1. Base; 2. Buffer box; 3. Suction pipe; 4. Feed pipe; 5. Negative pressure pump; 6. PLC control panel; 7. Motor 1; 8. Lead screw; 9. Side plate; 10. Guide groove; 11. Threaded block; 12. Threaded hole; 13. Support plate; 14. Slide rod; 15. Slider; 16. Feed chute; 17. Cavity; 18. Heating ring; 19. Discharge pipe; 20. Motor 2; 21. Spiral conveyor plate; 22. Roller; 23. Bolt; 24. Fixing frame. Detailed Implementation

[0024] To facilitate the solution of the problem, this utility model provides a plastic granule feeding device with a preheating function. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] Example

[0026] like Figures 1 to 5 As shown, this embodiment provides a plastic granule feeding device with preheating function, including a base 1, a buffer box 2, a tray 13, a heating ring 18, and also includes a lifting component and a driving component. The lifting component is installed on the top of the base 1, and the driving component is installed inside the buffer box 2. When the driving component is running, it drives the plastic granules to move inside the buffer box 2 for preheating treatment.

[0027] Plastic granules are drawn into the buffer tank 2 through the suction pipe 3 connected to the negative pressure pump 5, and then enter the buffer tank 2 through the feed pipe 4 and feed trough 16. The cavity 17 is heated by the equidistant heating rings 18. At the same time, the plastic granules are moved in the cavity 17 by the drive component. On the one hand, the plastic granules are preheated, and on the other hand, the preheated plastic granules are stirred and mixed. The height of the pallet 13 and the buffer tank 2 can be adjusted by the lifting component, so that the preheated plastic granules can be adjusted to different heights and output through the discharge pipe 19.

[0028] Reference Figure 1 and Figure 4 As one embodiment of this utility model, specifically, the driving component includes a second motor 20, a spiral conveyor 21 and a roller 22. The roller 22 is provided inside the buffer box 2, and the spiral conveyor 21 is provided on the surface of the roller 22. The roller 22 is driven by the second motor 20 outside the buffer box 2.

[0029] The roller 22 with spiral conveyor blades 21 is driven to rotate by motor 20, which pushes the plastic granules and preheats them during the pushing process. In addition, the preheated plastic granules are stirred and mixed.

[0030] Reference Figure 1 and Figure 3 As one embodiment of this utility model, specifically, the buffer box 2 has a cavity 17 inside, the inner wall of the cavity 17 is in contact with the outer end of the spiral conveyor plate 21, the inner wall of the cavity 17 is provided with equidistant heating rings 18, the heating rings 18 are connected in series, the top of the buffer box 2 has a feed trough 16, the feed trough 16 is connected to the cavity 17, and the side of the buffer box 2 has a discharge pipe 19 inserted, the discharge pipe 19 is connected to the cavity 17.

[0031] The inner wall of cavity 17 is heated by heating rings 18 spaced equidistantly on the inner wall of cavity 17. The feed chute 16 on the top of the buffer box 2 is connected to cavity 17, which facilitates the conveying of plastic granules into cavity 17 for processing. In addition, the discharge pipe 19 on the side of the buffer box 2 facilitates the output of preheated plastic granules.

[0032] Reference Figure 1 As one embodiment of this utility model, specifically, a negative pressure pump 5 is provided on the top of the buffer box 2. The output end of the negative pressure pump 5 is connected to the feed trough 16 through the feed pipe 4, and the input end of the negative pressure pump 5 is connected to the suction pipe 3.

[0033] Plastic granules are sucked in by the negative pressure pump 5 connected to the suction pipe 3, and then enter the buffer box 2 through the feed pipe 4 and the feed trough 16, so that the plastic granules can smoothly enter the cavity 17 for preheating treatment.

[0034] Reference Figure 1 and Figure 2 As one embodiment of this utility model, specifically, the lifting assembly includes a motor 7, a lead screw 8, a side plate 9, a guide groove 10, a threaded block 11, a slide rod 14, and a slider 15. The top of the base 1 is fixedly connected to symmetrical side plates 9. The side plates 9 have guide grooves 10 inside. One side of the guide groove 10 has a lead screw 8 inside. The lead screw 8 is driven by the motor 7 at the top of the side plate 9. The surface of the lead screw 8 is threadedly connected to a threaded block 11. One side of the threaded block 11 is fixedly connected to the support plate 13. The other side of the guide groove 10 has a slide rod 14 fixedly connected inside. The surface of the slide rod 14 is slidably connected to a slider 15. The slider 15 is fixedly connected to the other side of the support plate 13.

[0035] Symmetrical side plates 9 are set on the top of the base 1. A lead screw 8 is set in one side plate 9 to connect the threaded block 11 and the support plate 13. A slide rod 14 is set in the other side plate 9 to connect the slider 15 and the support plate 13. The motor 7 at the top of the side plate 9 drives the lead screw 8 to rotate, which drives the support plate 13 to move up and down, thereby realizing the lifting and moving of the buffer box 2. This makes it easy to move the preheated plastic granules to different heights for convenient actual output.

[0036] Reference Figure 1 , Figure 2 and Figure 5 As one embodiment of this utility model, specifically, a fixing frame 24 is fixedly connected to the top of the tray 13 by bolts 23, the buffer box 2 is snapped into the inside of the fixing frame 24, and a matching threaded hole 12 is opened on the surface of the tray 13.

[0037] The mounting bracket 24 is fixed by threaded holes 12 on the top of the support plate 13 and bolts 23. The top of the mounting bracket 24 is snapped onto the surface of the buffer box 2, which facilitates the installation and removal of the buffer box 2.

[0038] Reference Figure 1 As one embodiment of this utility model, specifically, a PLC control panel 6 is installed on the top of the base 1, and the PLC control panel 6 is connected to the negative pressure pump 5, motor 1 7, heating ring 18 and motor 20.

[0039] The negative pressure pump 5, motor 1 7, heating ring 18 and motor 20 are controlled by the PLC control panel 6 to ensure the stable operation of the whole device.

[0040] Working principle: Plastic granules are sucked in by the negative pressure pump 5 connected to the suction pipe 3, and then enter the buffer tank 2 through the feed pipe 4 and feed trough 16. The cavity 17 is heated by the equidistant heating rings 18. At the same time, the drive component drives the plastic granules to move in the cavity 17. On the one hand, the plastic granules are preheated, and on the other hand, the preheated plastic granules are stirred and mixed. The height of the pallet 13 and the buffer tank 2 can be adjusted by the lifting component, so that the preheated plastic granules can be adjusted to different heights and output through the discharge pipe 19.

[0041] Specifically, the roller 22 with spiral conveyor blades 21 is driven to rotate by motor 20, which pushes the plastic granules and preheats them during the pushing process. In addition, the preheated plastic granules are stirred and mixed. When the preheated plastic granules are actually output, the lead screw 8 is driven to rotate by motor 7, which drives the pallet 13 to move up and down, thereby realizing the movement of the buffer box 2. This makes it easy to move the preheated plastic granules to different heights and to adjust the preheated plastic granules to different heights for output through the discharge pipe 19.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic particle feeding device with preheating function, comprising a base (1), a buffer box (2), a supporting plate (13) and a heating ring (18), characterized in that: It also includes a lifting component and a driving component. The lifting component is installed on the top of the base (1), and the driving component is installed inside the buffer box (2). When the driving component is running, it drives the plastic particles to move inside the buffer box (2) for preheating treatment.

2. The plastic particle feeding device with preheating function according to claim 1, characterized in that: The drive assembly includes a second motor (20), a spiral conveyor (21) and a roller (22). The buffer box (2) is equipped with a roller (22) inside, and the surface of the roller (22) is equipped with a spiral conveyor (21). The roller (22) is driven by the second motor (20) outside the buffer box (2).

3. The plastic particle feeding device with preheating function according to claim 2, characterized in that: The buffer box (2) has a cavity (17) inside. The inner wall of the cavity (17) is in contact with the outer end of the spiral conveyor plate (21). The inner wall of the cavity (17) is provided with equidistant heating rings (18), which are connected in series. The top of the buffer box (2) has a feed trough (16), which is connected to the cavity (17). The side of the buffer box (2) has a discharge pipe (19), which is connected to the cavity (17).

4. The plastic particle feeding device with preheating function according to claim 3, characterized in that: The top of the buffer box (2) is equipped with a negative pressure pump (5). The output end of the negative pressure pump (5) is connected to the feed trough (16) through the feed pipe (4). The input end of the negative pressure pump (5) is connected to the suction pipe (3).

5. The plastic particle feeding device with preheating function according to claim 1, characterized in that: The lifting assembly includes a motor (7), a lead screw (8), a side plate (9), a guide groove (10), a threaded block (11), a slide rod (14), and a slider (15). The top of the base (1) is fixedly connected to a symmetrical side plate (9). The side plate (9) has a guide groove (10) inside. The lead screw (8) is provided inside the guide groove (10) on one side. The lead screw (8) is driven by the motor (7) at the top of the side plate (9). The surface of the lead screw (8) is threadedly connected to a threaded block (11). One side of the threaded block (11) is fixedly connected to the support plate (13). The guide groove (10) on the other side is fixedly connected to a slide rod (14). The surface of the slide rod (14) is slidably connected to a slider (15). The slider (15) is fixedly connected to the other side of the support plate (13).

6. The plastic particle feeding device with preheating function according to claim 5, characterized in that: The top of the tray (13) is fixedly connected to a fixing frame (24) by bolts (23). The fixing frame (24) is internally connected to a buffer box (2). The surface of the tray (13) is provided with matching threaded holes (12).

7. The plastic particle feeding device with preheating function according to claim 1, characterized in that: The base (1) is equipped with a PLC control panel (6) on top, which is connected to the negative pressure pump (5), motor one (7), heating ring (18) and motor two (20).

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