Recycled plastic forming device

Abstract

The utility model discloses a regenerated plastic forming device which comprises a main frame body, an extrusion hot melting conveying device and a driving device, and the extrusion hot melting conveying device comprises a conveying pipeline, a material pushing screw rod, a shell, a heating element, a pressure detection assembly, a forming plate and an air cooling device; the driving device comprises a driving motor and a speed reducer. By means of the design of the conical pushing screw body, hot-melt plastic can be pushed into the forming plate to be extruded and formed under certain pressure, the accumulation phenomenon affecting conveying of the molten plastic is avoided, the extrusion efficiency is high, meanwhile, the spiral face is beneficial to conveying of the molten plastic, and the extrusion efficiency is high. Due to the arrangement of the multi-stage heat preservation heating element, the molten plastic can be always kept in a molten state in the conveying process; and the forming pipe can be rapidly cooled through the multi-stage cooling device, so that the extruded plastic can be rapidly cooled, rapid forming of the plastic is facilitated, and the forming effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing, and in particular to a recycled plastic molding device. Background Technology

[0002] To achieve resource recycling and alleviate environmental pressure, waste plastic products are usually recycled and reprocessed into recycled plastics. When recycling waste plastics, it is necessary to process them through hot melting, molding, and drying, and then obtain plastic granules through injection molding to realize the reuse and processing of waste plastics. Recycled plastic molding equipment is required when molding the plastics.

[0003] Most existing plastic extrusion molding equipment uses an extrusion screw to directly mold molten plastic into a cooling pipe. The extrusion screw can only provide a limited amount of extrusion force, making it difficult to extrude the plastic into shape, and the extrusion efficiency is also low. At the same time, existing plastic granule extrusion molding equipment directly pours the plastic raw material into the device for hot melting, resulting in uneven plastic feeding and difficulty in fully melting the plastic, which affects the molding effect. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a recycled plastic molding device.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a recycled plastic molding device, comprising a horizontally placed main frame, an extrusion hot-melt conveying device, and a drive device fixed to one side of the main frame. The extrusion hot-melt conveying device is located above the main frame and includes a conveying pipe, a pusher screw, and a housing. Several heating elements for heating the conveying pipe are installed on its exterior. The conveying pipe is horizontally fixed to the main frame, with an output pipe installed at one end and a connecting bracket at the other end. A feed hopper is connected above the connecting bracket, and one side of the connecting bracket is fixed to the inner side of the main frame. A pressure detection component is connected to the middle of the conveying pipe. A molding plate is provided on one side inside the conveying pipe, and several air-cooling devices are connected below the conveying pipe. The housing covers the conveying pipe and the air-cooling devices. The drive device includes a drive motor and a reducer. The reducer is fixed to one side above the main frame, with the output end of the drive motor connected to the input end of the reducer via a belt, and the output end of the reducer connected to the pusher screw.

[0007] As a preferred embodiment of this utility model, the conveying pipe and the pusher screw are arranged coaxially. The middle part of the conveying pipe is fixed to the main frame at the connection point with the pressure detection component. One end of the pusher screw is conical, and the apex of the conical shape corresponds to the center of the forming plate. The main body of the pusher screw is conical, and the small end of the conical shape is rotatably connected to the connecting bracket. The pusher screw can rotate around its own axis, and the rotation of the pusher screw pulls the molten plastic towards the conveying joint.

[0008] As a preferred embodiment of this utility model, the middle part of the pusher screw is rotatably connected to the connecting bracket, one end of the connecting bracket is fixed to the inside of the main frame body by bolts, an end cover is provided on the outside of the output end of the reducer, the end cover is fixed to the side of the reducer by bolts, a drive gear is provided inside the reducer, the center of the drive gear is coaxially arranged with the pusher screw, and a coupling for connecting the drive gear and the pusher screw is also provided inside the reducer.

[0009] As a preferred embodiment of the present invention, each heating element includes a cylindrical heating block, which is coaxially arranged with and fixed on the conveying pipe. The heating blocks are evenly distributed along the outer circumference of the conveying pipe. The heating elements are used to heat the conveying pipe step by step, and a temperature sensor is connected to the heating block.

[0010] As a preferred embodiment of this utility model, the air-cooling device is evenly distributed along the heating element and covers the heating element, and the upper end of the air-cooling device is provided with a ventilation port that is connected to the conveying pipe.

[0011] As a preferred embodiment of this utility model, one end of the output pipe is fixedly connected to the end face of the conveying pipe by bolts, the forming plate is disposed at the connection between the conveying pipe and the output pipe, and the forming plate is provided with a plurality of evenly distributed through holes.

[0012] As a preferred embodiment of this utility model, the lower part of the feed hopper is welded to the connecting bracket and communicates with the interior of the connecting bracket, and a discharge outlet is also provided on one side below the feed hopper.

[0013] As a preferred embodiment of this utility model, the pressure detection component includes a pressure gauge and a connecting pipe. The lower part of the connecting pipe is connected to the interior of the delivery pipeline for detecting the pressure of the plastic flow inside the delivery pipeline.

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

[0015] 1. Through the conical pusher screw design, the hot-melt plastic can be pushed into the forming plate under certain pressure and extruded into shape. The device has a larger extrusion force and will not have the phenomenon of accumulation that affects the conveying of molten plastic. At the same time, the spiral surface is conducive to the smooth conveying of molten plastic and makes it easier to extrude plastic into shape. The setting of multi-stage heating elements can make the molten plastic melt evenly and keep it in a molten state during the conveying process, and the extrusion efficiency is also high.

[0016] 2. The multi-stage cooling device can quickly cool the molding tube, thereby rapidly cooling the extruded plastic, which is beneficial for rapid molding and improves the molding effect. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

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

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0022] In the diagram: 1. Main frame; 2. Extrusion hot melt conveying device; 3. Drive device; 11. Conveying pipe; 12. Pushing screw; 13. Heating element; 14. Output pipe; 15. Connecting bracket; 16. Feed hopper; 17. Pressure detection assembly; 18. Forming plate; 19. Air cooling device; 20. Outer shell; 21. Drive motor; 22. Reducer; 23. End cover; 24. Drive gear; 25. Coupling; 31. Heating block; 41. Pressure gauge; 42. Connecting pipe. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] In the attached diagram, all identical reference numerals refer to the same components.

[0025] like Figure 1-4As shown, this utility model provides a recycled plastic molding device, including a horizontally placed main frame 1, an extrusion hot melt conveying device 2 fixed above the main frame 1 by a bracket, and a drive device 3 fixed to one side of the main frame 1. The extrusion hot melt conveying device 2 includes a conveying pipe 11, a pusher screw 12, and a housing 20. Several heating elements 13 for heating are matched and installed on the outer circumferential surface of the conveying pipe 11. The conveying pipe 11 is horizontally fixed to the main frame 1, and an output pipe 14 is installed at one end of the conveying pipe 11, and a connecting bracket 15 is provided at the other end. A feed hopper 16 is welded above the connecting bracket 15. One side of the connecting bracket 15 is fixed to the inner side of the main frame 1. A pressure detection component 17 is connected to the middle of the conveying pipe 11. A forming plate 18 is inlaid on the inner circular surface of one side of the conveying pipe 11. Several air-cooling devices 19 are connected below the conveying pipe 11. The outer shell 20 covers the conveying pipe 11 and the air-cooling devices 19. The driving device 3 includes a driving motor 21 and a reducer 22. The reducer 22 is fixed on one side above the main frame 1. The output end of the driving motor 21 is connected to the input end of the reducer 22 by a belt. The output end of the reducer 22 is connected to the push screw 12.

[0026] This invention uses multi-stage heating elements 13 to enable plastic to melt evenly and quickly. Under the extrusion of the pusher screw 12, the molten plastic is extruded into a cylindrical shape and discharged as recyclable plastic.

[0027] The method of using this utility model is as follows:

[0028] 1. Fragmented plastic enters the conveying pipe 11 through the feed hopper 16. Under the heating of the heating block 31 and the extrusion of the pusher screw 12, the plastic is gradually melted into a molten state and moves in the conveying pipe 11.

[0029] 2. Then, under the cooling of the air-cooling device 19, the molten plastic gradually cools down and becomes semi-solid. It is then squeezed by the cone at the end of the pusher screw 12 at the molding plate 18, forming multiple cylindrical plastic strips that are discharged, thus forming recycled plastic.

[0030] Furthermore, the conveying pipe 11 and the pusher screw 12 are arranged coaxially, and the middle part of the conveying pipe 11 is fixed to the main frame 1 by bolts at the connection point with the pressure detection component 17. One end of the pusher screw 12 is conical, and the apex of the cone corresponds to the center of the forming plate 18. When the molten plastic enters the hollow cavity of the cone and the conveying pipe 11, it is squeezed by the high pressure of the pusher screw 12 and extruded into a cylindrical plastic through the circular through hole of the forming plate 18. The main body of the pusher screw 12 is conical, and the small end of the cone is rotatably connected to the connecting bracket 15. The pusher screw 12 can rotate around its own axis and the rotation of the pusher screw pulls the molten plastic towards the conveying joint.

[0031] Furthermore, the middle part of the pusher screw 12 is rotatably connected to the connecting bracket 15. One end of the connecting bracket 15 is fixed to the inner side of the main frame 1 by bolts to support the rotation of the pusher screw 12. An end cover 23 is provided on the outer side of the output end of the reducer 22. One side of the end cover 23 is fixed to the outer side of the reducer 22 by bolts. A drive gear 24 is provided inside the reducer 22. The center of the drive gear 24 is coaxially arranged with the pusher screw 12 and connected to it as a whole by a coupling 25. When the drive motor 21 drives the reducer 22 to rotate, the drive gear 24 located inside the reducer 22 drives the pusher screw 12 to rotate synchronously, thereby pushing the molten plastic to flow towards the outlet in the conveying pipe 11.

[0032] Furthermore, each heating element 13 includes a cylindrical heating block 31, which is coaxially arranged with and fixed on the conveying pipe 11. The heating blocks 31 are evenly distributed along the outer circle of the conveying pipe 11, and the heating element 13 can continuously generate heat.

[0033] In this embodiment, the cylindrical heating blocks 31 are evenly arranged in segments to heat the conveying pipe 11 step by step to melt the recycled plastic. Each heating block 31 is fixedly equipped with a temperature sensor to detect the temperature of each segment of the conveying pipe 11. When the temperature of a certain segment is too high, the temperature on the heating block 31 can be reduced by the controller (not shown), so that the temperature of each heating segment can be easily controlled, which facilitates the flow and molding of the plastic.

[0034] Furthermore, the air-cooling device 19 is evenly distributed along the heating element 13 and covers the heating element 13. The upper end of the air-cooling device 19 is provided with a vent that is connected to the conveying pipe 11. Through the setting of the multi-stage air-cooling device 19, the molten plastic can be quickly cooled into a solid state, which improves the molding efficiency of the molding device.

[0035] Furthermore, both the output pipe 14 and the conveying pipe 11 have flange faces at one end, and the two flange faces are fixedly connected by bolts, so that the molten plastic can be smoothly extruded into the output pipe 14. The forming plate 18 is set at the connection between the conveying pipe 11 and the output pipe 14. The forming plate 18 has multiple evenly distributed through holes. Under the extrusion action of the pusher screw 12, the plastic in the solid-liquid mixed state is extruded from the through holes into multiple cylindrical plastic solids and discharged.

[0036] Furthermore, the lower part of the feed hopper 16 is welded to the connecting bracket 15 and communicates with the interior of the connecting bracket 15. The feed hopper 16 can continuously supply recycled plastic into the conveying pipe 11 for melting. A discharge outlet is also provided on one side below the feed hopper 16, through which excess unused recycled plastic can be discharged.

[0037] Furthermore, the pressure detection component 17 includes a pressure gauge 41 and a connecting pipe 42. The connecting pipe 42 is connected to the inside of the conveying pipe 11 at the bottom and is used to detect the pressure of the plastic flow inside the conveying pipe 11 in real time. When the pressure inside the conveying pipe 11 is too low, the speed of the pusher screw 12 is increased by increasing the speed of the drive motor 21, thereby increasing the extrusion force on the plastic. When the pressure inside the conveying pipe 11 is too high, the speed of the drive motor 21 can be reduced, thereby reducing the extrusion force on the plastic.

[0038] This utility model is a recycled plastic molding device. By using a conical pusher screw 12, the extrusion force of the device is increased, avoiding the accumulation phenomenon that affects the conveying of molten plastic. At the same time, the multi-stage air cooling device can quickly cool down the molding tube, thereby rapidly cooling the extruded plastic, which is conducive to the rapid molding of plastic and improves molding efficiency.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any 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 recycled plastic molding apparatus, characterized in that, The device includes a horizontally placed main frame (1), an extrusion hot melt conveying device (2), and a drive device (3) fixed to one side of the main frame (1). The extrusion hot melt conveying device (2) is located above the main frame (1). The extrusion hot melt conveying device (2) includes a conveying pipe (11), a pusher screw (12), and a housing (20). Several heating elements (13) for heating the conveying pipe (11) are installed on the outside of the conveying pipe (11). The conveying pipe (11) is horizontally fixed to the main frame (1), and an output pipe (14) is installed at one end of the conveying pipe (11), while a connecting bracket (15) is installed at the other end. A feed hopper (16) is connected above the connecting bracket (15). The connecting bracket (15) is fixed on one side of the main frame (1). The middle of the conveying pipe (11) is connected to the pressure detection component (17). A forming plate (18) is provided on one side inside the conveying pipe (11). Several air-cooling devices (19) are connected below the conveying pipe (11). The outer shell (20) covers the conveying pipe (11) and the air-cooling devices (19). The driving device (3) includes a drive motor (21) and a reducer (22). The reducer (22) is fixed on one side above the main frame (1). The output end of the drive motor (21) is connected to the input end of the reducer (22) by a belt. The output end of the reducer (22) is connected to the push screw (12).

2. The recycled plastic molding apparatus according to claim 1, characterized in that, The conveying pipe (11) and the pusher screw (12) are arranged coaxially. The middle part of the conveying pipe (11) is fixed to the main frame (1) at the connection point with the pressure detection component (17). One end of the pusher screw (12) is conical, and the cone apex corresponds to the center of the molding plate (18). The main body of the pusher screw (12) is conical, and the small end of the cone can be rotatably connected to the connecting bracket (15). The pusher screw (12) can rotate around its own axis and the pusher screw rotates and pulls the molten plastic towards the conveying joint.

3. The recycled plastic molding apparatus according to claim 1, characterized in that, The middle part of the pusher screw (12) is rotatably connected to the connecting bracket (15). One end of the connecting bracket (15) is fixed to the inner side of the main frame (1) by bolts. The output end of the reducer (22) is provided with an end cover (23). The end cover (23) is fixed to the side of the reducer (22) by bolts. The reducer (22) is provided with a drive gear (24). The center of the drive gear (24) is coaxially arranged with the pusher screw (12). The reducer (22) is also provided with a coupling (25) for connecting the drive gear (24) and the pusher screw (12).

4. The recycled plastic molding apparatus according to claim 1, characterized in that, Each of the heating elements (13) includes a cylindrical heating block (31), which is coaxially arranged with and fixed on the conveying pipe (11). The heating blocks (31) are evenly distributed along the outer circle of the conveying pipe (11). The heating elements (13) are used to heat the conveying pipe (11) step by step. A temperature sensor is connected to the heating block (31).

5. A recycled plastic molding apparatus according to claim 4, characterized in that, The air-cooling device (19) is evenly distributed along the heating element (13) and covers the heating element (13). The upper end of the air-cooling device (19) is provided with a vent that is connected to the conveying pipe (11).

6. The recycled plastic molding apparatus according to claim 1, characterized in that, One end of the output pipe (14) is fixedly connected to the end face of the conveying pipe (11) by bolts. The forming plate (18) is set at the connection between the conveying pipe (11) and the output pipe (14). The forming plate (18) has a plurality of uniformly distributed through holes.

7. A recycled plastic molding apparatus according to claim 1, characterized in that, The lower part of the feed hopper (16) is welded to the connecting bracket (15) and communicates with the interior of the connecting bracket (15). The feed hopper (16) is also provided with a discharge outlet on one side below.

8. A recycled plastic molding apparatus according to claim 1, characterized in that, The pressure detection component (17) includes a pressure gauge (41) and a connecting pipe (42), the lower part of which is connected to the interior of the delivery pipe (11) for detecting the pressure of the plastic flow inside the delivery pipe (11).

Images