Polylactic acid composite material mixing and extruding device

Abstract

The utility model discloses a polylactic acid composite material mixing and extruding device which comprises a heating and conveying shell, a mixing tank is arranged above the heating and conveying shell, and a discharging pipe is fixedly connected between the bottom end of the mixing tank and a feeding port of the heating and conveying shell. According to the polylactic acid composite material mixing and extruding device disclosed by the utility model, the double-shaft motor can drive the stirring assembly through the first bevel gear and the second bevel gear to stir a polylactic acid composite material in the mixing tank, and the arranged material scraping plate can prevent raw materials from being adhered; the raw materials can be conveyed into the heating and conveying shell through the arranged second spiral conveying plate, the double-shaft motor can drive the rotating shaft to rotate through transmission of the first chain wheel, the chain and the second chain wheel, and therefore the first spiral conveying plate can be driven to convey the heated and melted raw materials, and the raw materials are extruded through the material extruding hole plate; and the cleaning assembly can be used for cleaning the material extruding pore plate in time, so that blockage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mixed extrusion devices, in particular to a mixed extrusion device for polylactic acid composite materials. Background Art

[0002] Polylactic acid composite material is a material made of polylactic acid as the base material, which is processed by adding a certain amount of cellulose, chitosan, natural polymers and other fillers and reinforcing materials. Polylactic acid itself is a biodegradable polymer material with good degradability, safety and environmental protection, and is widely used in medical and food packaging fields. By adding various fillers and reinforcing materials, polylactic acid composite materials can have more abundant properties and applications.

[0003] The Chinese patent with the patent publication number CN219789219U discloses a polylactic acid composite material mixed extrusion device, including an insulation layer; the insulation layer inner cavity is fixedly connected to a melting chamber, a U-shaped heating chamber is arranged between the insulation layer and the melting chamber, an extrusion assembly is installed in the middle of the inner cavity of the melting chamber, a cleaning groove is arranged at the top of the insulation layer inner cavity, a cleaning assembly is installed in the inner cavity of the cleaning groove, a locking cavity is arranged in the inner cavity of the melting chamber and located on one side of the cleaning groove, a locking assembly is installed in the locking cavity, a stirring assembly is installed at one end of the top surface of the insulation layer, and an extrusion die is fixedly connected to one end of the insulation layer by bolts; the cleaning assembly includes a cleaning motor and a limit block, and a cleaning motor is fixedly connected to one end of the outer surface of the insulation layer. The mutual cooperation of the stirring assembly, the extrusion assembly and the extrusion die of the utility model realizes the mixing, heating and extrusion of materials, and finally, the cleaning of the melting chamber and the extrusion assembly is realized by the locking assembly and the cleaning assembly.

[0004] The extrusion port of the existing polylactic acid composite material mixing extrusion device cannot be cleaned in time when the material is stopped, which will cause blockage. In order to overcome these disadvantages, the utility model provides a polylactic acid composite material mixing extrusion device. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a polylactic acid composite material mixing extrusion device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a polylactic acid composite material mixing extrusion device, comprising a heating and conveying shell, a mixing tank is arranged above the heating and conveying shell, a feeding pipe is fixedly connected between the bottom end of the mixing tank and the feeding port of the heating and conveying shell, a support plate is fixedly connected to the upper end of the mixing tank, a stirring assembly is arranged on the support plate, a rotating shaft is rotatably connected inside the heating and conveying shell, a first spiral conveying plate is fixedly connected to the outer side of the rotating shaft, a sealing plate is bolted to the front side of the heating and conveying shell, an extrusion orifice plate is fixedly connected to the sealing plate, a discharge hopper is fixedly connected to the bottom end of the front side of the sealing plate, and a cleaning assembly is arranged at the upper end of the front side of the sealing plate.

[0007] Furthermore, the stirring assembly includes a stirring shaft rotatably connected to the support plate, a plurality of stirring blades are fixedly connected to the outside of the stirring shaft, a scraper plate is fixedly connected to the outside of the stirring blades, and a second spiral conveying plate is fixedly connected to the outside of the stirring shaft at a position inside the discharge pipe.

[0008] Furthermore, a first bevel gear is fixedly connected to the upper end of the stirring shaft, a dual-axis motor is fixedly connected to one side of the upper end of the support plate, a second bevel gear is fixedly connected to one side of the output end of the dual-axis motor, and the first bevel gear is meshingly connected with the second bevel gear.

[0009] Furthermore, one end of the dual-axis motor output end is fixedly connected to a first sprocket, one end of the rotating shaft passes through the heating and conveying shell and is fixedly connected to a second sprocket, and the first sprocket and the second sprocket are driven by a chain.

[0010] Furthermore, the cleaning assembly includes a slide rail fixedly connected to the sealing plate, a reciprocating screw rod is rotatably connected inside the slide rail, a drive motor is fixedly connected to one side of the slide rail, and an output end of the drive motor is fixedly connected to one end of the reciprocating screw rod.

[0011] Furthermore, a slider meshing with the reciprocating screw rod is slidably connected inside the slide rail, a fixing frame is fixedly connected to the slider, an electric telescopic rod is fixedly connected to the fixing frame, and a cleaning scraper is fixedly connected to the output end of the electric telescopic rod through the fixing frame.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is in use, the polylactic acid composite material mixed extrusion device can drive the stirring component to stir the polylactic acid composite material in the mixing tank through the first bevel gear and the second bevel gear through the arranged double-axis motor, the arranged scraper plate can prevent the raw materials from sticking, and the arranged second spiral conveying plate can convey the raw materials to the heating and conveying shell. The double-axis motor can drive the rotating shaft to rotate through the transmission of the first sprocket, the chain and the second sprocket, so as to drive the first spiral conveying plate to convey the heated and melted raw materials. The raw materials are extruded through the extrusion orifice plate and can be discharged through the discharge hopper. The arranged cleaning component can clean the extrusion orifice plate in time to avoid blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 : A front view of the utility model;

[0016] Figure 2 : A cross-sectional view of the utility model;

[0017] Figure 3 : Schematic diagram of the cleaning component structure of the utility model.

[0018] The reference numerals are as follows:

[0019] 1. Heating and conveying shell; 2. Mixing tank; 3. Feeding pipe; 4. Rotating shaft; 5. Sealing plate; 6. Extrusion hole plate; 7. Discharge hopper; 8. Cleaning component; 9. First spiral conveying plate; 10. Support plate; 11. Stirring shaft; 12. Stirring blade; 13. Scraper plate; 14. Second spiral conveying plate; 15. First bevel gear; 16. Double-axis motor; 17. Second bevel gear; 18. First sprocket; 19. Chain; 20. Second sprocket; 21. Slide rail; 22. Reciprocating screw rod; 23. Driving motor; 24. Sliding block; 25. Fixed frame; 26. Electric telescopic rod; 27. Cleaning scraper. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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] like Figure 1-3 As shown, it relates to a polylactic acid composite material mixing extrusion device, including a heating and conveying shell 1, a mixing tank 2 is arranged above the heating and conveying shell 1, a feeding pipe 3 is fixedly connected between the bottom end of the mixing tank 2 and the feeding port of the heating and conveying shell 1, a support plate 10 is fixedly connected to the upper end of the mixing tank 2, and a stirring component is arranged on the support plate 10, a rotating shaft 4 is rotatably connected inside the heating and conveying shell 1, a first spiral conveying plate 9 is fixedly connected to the outer side of the rotating shaft 4, a sealing plate 5 is bolted to the front side of the heating and conveying shell 1, an extrusion hole plate 6 is fixedly connected to the sealing plate 5, a discharge hopper 7 is fixedly connected to the bottom end of the front side of the sealing plate 5, and a cleaning component 8 is arranged at the upper end of the front side of the sealing plate 5.

[0022] like Figure 1-3 As shown, the stirring assembly includes a stirring shaft 11 rotatably connected to the support plate 10, a plurality of stirring blades 12 are fixedly connected to the outside of the stirring shaft 11, and a scraper plate 13 is fixedly connected to the outside of the corresponding stirring blades 12, and a second spiral conveying plate 14 is fixedly connected to the position of the outside of the stirring shaft 11 located inside the discharge pipe 3, and a first bevel gear 15 is fixedly connected to the upper end of the stirring shaft 11, a double-shaft motor 16 is fixedly connected to one side of the upper end of the support plate 10, and a second bevel gear 17 is fixedly connected to one side of the output end of the double-shaft motor 16, the first bevel gear 15 is meshed with the second bevel gear 17, and one end of the output end of the double-shaft motor 16 is fixedly connected to a first sprocket 18, and one end of the rotating shaft 4 passes through the heating and conveying shell 1 A second sprocket 20 is fixedly connected, and the first sprocket 18 and the second sprocket 20 are driven by a chain 19. The dual-axis motor 16 can drive the stirring shaft 11 to rotate through the first bevel gear 15 and the second bevel gear 17, thereby driving the stirring blade 12 to stir the polylactic acid composite material in the mixing tank 2. The scraper plate 13 can prevent the raw materials from sticking. The raw materials can be transported to the heating and conveying shell 1 through the discharge pipe 3 through the second spiral conveying plate 14. The dual-axis motor 16 can drive the rotating shaft 4 to rotate through the transmission of the first sprocket 18, the chain 19 and the second sprocket 20, thereby driving the first spiral conveying plate 9 to transport the heated and melted raw materials.

[0023] like Figure 1-3As shown, the cleaning component 8 includes a slide rail 21 fixedly connected to the sealing plate 5, a reciprocating screw 22 is rotatably connected inside the slide rail 21, a driving motor 23 is fixedly connected to one side of the slide rail 21, an output end of the driving motor 23 is fixedly connected to one end of the reciprocating screw 22, a slider 24 meshingly connected to the reciprocating screw 22 is slidably connected inside the slide rail 21, a fixing frame 25 is fixedly connected to the slider 24, an electric telescopic rod 26 is fixedly connected to the fixing frame 25, an output end of the electric telescopic rod 26 passes through the fixing frame 25 and is fixedly connected to a cleaning scraper 27, the electric telescopic rod 26 drives the cleaning scraper 27 to stick to the extrusion orifice plate 6, the driving motor 23 drives the reciprocating screw 22 to rotate, and can drive the slider 24 to slide back and forth along the slide rail 21, thereby driving the cleaning scraper 27 to scrape and clean the extrusion orifice plate 6.

[0024] Working principle: When in use, the raw material of the polylactic acid composite material is placed in the buffer tank, and the dual-axis motor 16 can drive the stirring shaft 11 to rotate through the first bevel gear 15 and the second bevel gear 17, thereby driving the stirring blade 12 to stir the polylactic acid composite material in the mixing tank 2, and the scraper plate 13 can prevent the raw material from sticking. The raw material can be transported to the heating and conveying shell 1 through the discharge pipe 3 through the second spiral conveying plate 14. The heating plate arranged on the inner wall of the heating and conveying shell 1 can heat and melt the polylactic acid composite material. The dual-axis motor 16 can drive the stirring shaft 11 to rotate through the first bevel gear 15 and the second bevel gear 17, thereby driving the stirring blade 12 to stir the polylactic acid composite material in the mixing tank 2, and the scraper plate 13 can prevent the raw material from sticking. The raw material can be transported to the heating and conveying shell 1 through the discharge pipe 3 through the second spiral conveying plate 14. The heating plate arranged on the inner wall of the heating and conveying shell 1 can heat and melt the polylactic acid composite material. The transmission of the sprocket 18, the chain 19 and the second sprocket 20 drives the rotating shaft 4 to rotate, thereby driving the first spiral conveyor plate 9 to convey the heated and melted raw materials. The raw materials are extruded through the extrusion orifice plate 6 and can be discharged through the discharge hopper 7. The extrusion orifice plate 6 can be cleaned in time by the provided cleaning component 8 to avoid blockage. Specifically, the electric telescopic rod 26 drives the cleaning scraper 27 to close to the extrusion orifice plate 6, and the driving motor 23 drives the reciprocating screw rod 22 to rotate, which can drive the slider 24 to slide back and forth along the slide rail 21, thereby driving the cleaning scraper 27 to scrape and clean the extrusion orifice plate 6.

[0025] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A polylactic acid composite material mixing and extrusion device, comprising a heating and conveying housing (1), characterized in that: A mixing tank (2) is arranged above the heating and conveying shell (1); a feeding pipe (3) is fixedly connected between the bottom end of the mixing tank (2) and the feeding port of the heating and conveying shell (1); a support plate (10) is fixedly connected to the upper end of the mixing tank (2); a stirring assembly is arranged on the support plate (10); a rotating shaft (4) is rotatably connected inside the heating and conveying shell (1); a first spiral conveying plate (9) is fixedly connected to the outer side of the rotating shaft (4); a sealing plate (5) is bolted to the front side of the heating and conveying shell (1); an extrusion orifice plate (6) is fixedly connected to the sealing plate (5); a discharge hopper (7) is fixedly connected to the bottom end of the front side of the sealing plate (5); and a cleaning assembly (8) is arranged at the upper end of the front side of the sealing plate (5).

2. A polylactic acid composite material mixing extrusion device according to claim 1, characterized in that: The stirring assembly comprises a stirring shaft (11) rotatably connected to a support plate (10); a plurality of stirring blades (12) are fixedly connected to the outside of the stirring shaft (11); a scraper plate (13) is fixedly connected to the outside of the stirring blades (12); and a second spiral conveying plate (14) is fixedly connected to the outside of the stirring shaft (11) at a position located inside a discharge pipe (3).

3. A polylactic acid composite material mixing extrusion device according to claim 2, characterized in that: The upper end of the stirring shaft (11) is fixedly connected to a first bevel gear (15), one side of the upper end of the support plate (10) is fixedly connected to a double-shaft motor (16), one side of the output end of the double-shaft motor (16) is fixedly connected to a second bevel gear (17), and the first bevel gear (15) is meshingly connected to the second bevel gear (17).

4. A polylactic acid composite material mixing extrusion device according to claim 3, characterized in that: One end of the output end of the dual-axis motor (16) is fixedly connected to a first sprocket (18), one end of the rotating shaft (4) passes through the heating and conveying shell (1) and is fixedly connected to a second sprocket (20), and the first sprocket (18) and the second sprocket (20) are driven by a chain (19).

5. The polylactic acid composite material mixing extrusion device according to claim 1, characterized in that: The cleaning assembly (8) comprises a slide rail (21) fixedly connected to the sealing plate (5); a reciprocating screw rod (22) is rotatably connected inside the slide rail (21); a drive motor (23) is fixedly connected to one side of the slide rail (21); and an output end of the drive motor (23) is fixedly connected to one end of the reciprocating screw rod (22).

6. A polylactic acid composite material mixing extrusion device according to claim 5, characterized in that: A slider (24) meshingly connected to the reciprocating screw rod (22) is slidably connected inside the slide rail (21); a fixing frame (25) is fixedly connected to the slider (24); an electric telescopic rod (26) is fixedly connected to the fixing frame (25); an output end of the electric telescopic rod (26) passes through the fixing frame (25) and is fixedly connected to a cleaning scraper (27).

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