Melt extrusion device for thermoplastic granular material

Abstract

The utility model provides a melt extrusion device for thermoplastic granular materials, and relates to the field of plastic granules. Comprising a first fixing plate, one side of the first fixing plate is provided with a temperature control mechanism, the temperature control mechanism comprises a water tank fixedly connected with one side of the first fixing plate, an outlet of the water tank is fixedly communicated with an inlet of a first pipeline, and an outlet of the first pipeline is fixedly communicated with one side of a protective sleeve; the interior of the protective sleeve is fixedly connected with one end of a first extrusion pipe, and the outer circle surface of the first extrusion pipe is sleeved with the interior of the heating pipe. According to the melt extrusion device, through cooperative use of the protective sleeve, the first extrusion pipe, the heating pipe, the first pipeline, the water tank, the suction pump and the second pipeline, when molten plastic enters the extrusion barrel, the plastic in the extrusion barrel is heated through the heater, the plastic is extruded through the extrusion shaft, and the device can effectively control the temperature and improve the extrusion efficiency. And molten plastic is prevented from being solidified in the extrusion cylinder due to too low temperature.

Description

Technical Field

[0001] The utility model relates to a melt extrusion device, in particular to a melt extrusion device for thermoplastic particle materials, belonging to the technical field of plastic particles. Background Art

[0002] Thermoplastics are a type of plastic that becomes malleable at a certain temperature, solidifies upon cooling, and can be repeated. Their molecular structure is characterized by linear polymer compounds, generally lacking reactive groups and not undergoing linear molecular crosslinking upon heating. Waste products can be recycled and reprocessed into new products. Key varieties include polyolefins (vinyls, olefins, styrenes, acrylates, and fluorinated olefins), celluloses, polyether polyesters, and heteroaromatic polymers.

[0003] After searching, a Chinese patent application with publication number CN221067192U discloses a melt extrusion device related to the field of 3D printing technology. The melt extrusion device includes a mounting base, an extrusion melting chamber disposed within the mounting base, and a rotating shaft disposed within the extrusion melting chamber. During use, the rotating shaft and the transmission extrusion screw are driven to rotate by a reduction drive mechanism. The reduction drive method can increase the torque of the same drive motor, thereby improving the extrusion shearing effect between the transmission extrusion screw and the extrusion melting chamber, and preventing jamming.

[0004] Although the above patent can extrude and shear the raw materials to prevent them from getting stuck, the melt extrusion device in the above patent has difficulty in controlling the melting temperature, causing the thermoplastic particles to be fractured during the melting process, and it is easy for the thermoplastic particles to not be extruded. To this end, we provide a melt extrusion device for thermoplastic particle materials to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] The purpose of the present invention is to provide a device for melting and extruding thermoplastic granular materials in order to solve the above problems, so as to solve the problem in the prior art that it is difficult to control the melting temperature.

[0007] (2) Technical solution

[0008] The utility model is realized through the following technical solutions: a melt extrusion device for thermoplastic granular material, comprising a first fixed plate, a temperature control mechanism being provided on one side of the first fixed plate, the temperature control mechanism comprising a water tank fixedly connected to one side of the first fixed plate, the outlet of the water tank being fixedly connected to the inlet of a first pipe, the outlet of the first pipe being fixedly connected to one side of a protective sleeve, the interior of the protective sleeve being fixedly connected to one end of a first extrusion tube, the outer circular surface of the first extrusion tube being sleeved with the interior of a heating tube, one side of the protective sleeve being fixedly connected to the inlet of a second pipe, the outlet of the second pipe being fixedly connected to the inlet of a pump, and the outlet of the pump being fixedly connected to a connecting pipe of the water tank.

[0009] Preferably, the upper end of one side of the first fixed plate is rotatably connected to the fixed end of the electric telescopic rod, the telescopic end of the electric telescopic rod is rotatably connected to the lower surface of the second fixed plate, and one end of the second fixed plate is rotatably connected to one end of the first fixed plate, which can drive the movement to facilitate the discharge of used waste.

[0010] Preferably, an extrusion mechanism is provided on the other side of the first fixed plate, and the extrusion mechanism includes an extrusion cylinder fixedly connected to the other side of the first fixed plate, the upper end of the extrusion cylinder is fixedly connected to one side of the first motor, the output shaft of the first motor is fixedly connected to one end of the conveying shaft, and the other end of the conveying shaft is fixedly connected to the extrusion shaft. The melted thermoplastic particles can be transported to the extrusion port, which is convenient for driving the melted plastic to move.

[0011] Preferably, the interior of the extrusion barrel is fixedly connected to the heater, one side of the heater is fixedly connected to the output end of the connecting line, the output end of the connecting line is fixedly connected to the temperature controller, and one side of the temperature controller is fixedly connected to one side of the first fixed plate, so that the temperature inside the extrusion barrel can be observed, thereby playing a role in temperature monitoring.

[0012] Preferably, the upper end of one side of the extrusion barrel is fixedly connected to one end of the feed pipe, the other end of the feed pipe is fixedly connected to the lower surface of the mixing barrel, the upper surface of the mixing barrel is fixedly connected to one side of the second motor, and the output shaft of the second motor is fixedly connected to one end of the stirring shaft, so that the plastics can be mixed and melted conveniently.

[0013] Preferably, a second control valve is provided in the middle of the feed pipe, the lower end of one side of the mixing drum is fixedly connected to one end of the fixed column, and the other end of the fixed column is fixedly connected to the upper end of one side of the extrusion drum, which can control the mixed plastic particles to enter the extrusion drum and play a control role.

[0014] Preferably, the lower end of one side of the extrusion barrel is fixedly connected to one end of the discharge pipe, and the middle part of the discharge pipe is fixedly connected to the first control valve, which has the function of discharging waste, and the waste inside the extrusion barrel is discharged.

[0015] Preferably, the lower end of the extrusion barrel is fixedly connected to one end of the second extrusion tube, the outer circular surface of the second extrusion tube is fixedly connected to one end of the protective tube sleeve, and the extrusion inlet of the second extrusion tube is fixedly connected to one end of the first extrusion tube. When extruding the plastic, heating is performed to control the temperature of the extruded plastic.

[0016] The utility model provides a device for melt extrusion of thermoplastic granular materials, which has the following beneficial effects:

[0017] 1. The melt extrusion device is used in conjunction with a protective sleeve, a first extrusion tube, a heating tube, a first pipeline, a water tank, a pump and a second pipeline. When the melted plastic enters the extrusion barrel, the plastic inside the extrusion barrel is heated by the heater and extruded through the extrusion shaft. This device can effectively control the temperature and prevent the melted plastic from solidifying in the extrusion barrel due to too low a temperature.

[0018] 2. The melt extrusion device is used in conjunction with a first fixed plate, a second fixed plate, an electric telescopic rod, a temperature controller, a discharge pipe, a first control valve and a fixed column. When the work is completed, the second fixed plate is pushed up by the electric telescopic rod, and the conveying shaft is driven by the first motor to discharge the residual waste inside to the outside to prevent damage to the device and the occurrence of plastic extrusion failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model from the left;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the temperature control mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the extrusion mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 5 This is a right-side perspective structural diagram of the present invention;

[0024] Figure 6 For this utility model Figure 3 A schematic diagram of the enlarged structure.

[0025]

Main component symbol description

[0026] 1. First fixed plate;

[0027] 2. Temperature control mechanism; 201. Protective cover; 202. First extrusion tube; 203. Heating tube; 204. First pipeline; 205. Water tank; 206. Pump; 207. Second pipeline;

[0028] 3. Extrusion mechanism; 301. First motor; 302. Conveying shaft; 303. Extrusion barrel; 304. Extrusion shaft; 305. Second extrusion tube; 306. Discharge tube; 307. First control valve; 308. Heater;

[0029] 4. Temperature controller; 5. Connecting wire; 6. Electric telescopic rod; 7. Second fixed plate; 8. Fixed column; 9. Feed pipe; 10. Second control valve; 11. Mixing drum; 12. Mixing shaft; 13. Second motor. DETAILED DESCRIPTION

[0030] The embodiment of the utility model provides a device for melt extrusion of thermoplastic granular materials.

[0031] See also Figure 1 and Figure 4 , including a first fixed plate 1, an extrusion mechanism 3 is provided on the other side of the first fixed plate 1, the extrusion mechanism 3 includes an extrusion cylinder 303 fixedly connected to the other side of the first fixed plate 1, the lower end of the extrusion cylinder 303 is fixedly connected to one end of the second extrusion tube 305, the outer circular surface of the second extrusion tube 305 is fixedly connected to one end of the protective sleeve 201, and one end of the second extrusion tube 305 is fixedly connected to one end of the first extrusion tube 202. The molten plastic is transported to the second extrusion tube 305 through the conveying shaft 302, and the plastic is extruded through the first extrusion tube 202. The first extrusion tube 202 and the heating tube 203 are protected by the protective sleeve 201, and the protective sleeve 201 plays a protective role.

[0032] See also Figure 3 The lower end of one side of the extrusion barrel 303 is fixedly connected to one end of the discharge pipe 306, and the middle part of the discharge pipe 306 is fixedly connected to the first control valve 307. The waste inside the extrusion barrel 303 is discharged through the discharge pipe 306 and is controlled by the first control valve 307 to prevent the plastic from flowing out through the discharge pipe 306.

[0033] The upper end of one side of the extrusion barrel 303 is fixedly connected to one end of the feed pipe 9, and a second control valve 10 is provided in the middle of the feed pipe 9. The lower end of one side of the mixing barrel 11 is fixedly connected to one end of the fixed column 8, and the other end of the fixed column 8 is fixedly connected to the upper end of one side of the extrusion barrel 303. The extrusion barrel 303 and the mixing barrel 11 are fixed together by the fixed column 8 to play a stabilizing role. The plastic inside the mixing barrel 11 enters the extrusion barrel 303 through the feed pipe 9 and is extruded through the conveying shaft 302.

[0034] See also Figure 5The other end of the feed pipe 9 is fixedly connected to the lower surface of the mixing drum 11, the upper surface of the mixing drum 11 is fixedly connected to one side of the second motor 13, and the output shaft of the second motor 13 is fixedly connected to one end of the stirring shaft 12. The stirring shaft 12 is driven by the second motor 13 to mix the plastic inside the mixing drum 11, and the plastic particles enter the extrusion barrel 303 through the feed pipe 9. The amount of plastic entering can be controlled by the second control valve 10.

[0035] The interior of the extrusion barrel 303 is fixedly connected to the heater 308, one side of the heater 308 is fixedly connected to the output end of the connecting line 5, the output end of the connecting line 5 is fixedly connected to the temperature controller 4, one side of the temperature controller 4 is fixedly connected to one side of the first fixed plate 1, the interior of the extrusion barrel 303 is heated by the heater 308, the temperature controller 4 and the heater 308 are connected by the connecting line 5, the temperature inside the extrusion barrel 303 can be observed through the temperature controller 4, and then the temperature is controlled by the temperature control mechanism 2.

[0036] See also Figure 6 The upper end of the extrusion cylinder 303 is fixedly connected to one side of the first motor 301, the output shaft of the first motor 301 is fixedly connected to one end of the conveying shaft 302, and the other end of the conveying shaft 302 is fixedly connected to the extrusion shaft 304. The extrusion cylinder 303 is fixed by the first fixed plate 1 to prevent it from falling off during work. The first motor 301 drives the conveying shaft 302 to convey the molten plastic to the bottom, and then the molten plastic is extruded through the extrusion shaft 304.

[0037] The upper end of one side of the first fixed plate 1 is rotatably connected to the fixed end of the electric telescopic rod 6, the telescopic end of the electric telescopic rod 6 is rotatably connected to the lower surface of the second fixed plate 7, and one end of the second fixed plate 7 is rotatably connected to one end of the first fixed plate 1. The second fixed plate 7 is placed on the machine. When the equipment is finished using, the first fixed plate 1 is pushed by the electric telescopic rod 6 to lift the device, so that the excess plastic can be discharged from the extrusion cylinder 303 to prevent damage to the extrusion cylinder 303.

[0038] See also Figure 2A temperature control mechanism 2 is provided on one side of the first fixed plate 1. The temperature control mechanism 2 includes a water tank 205 fixedly connected to one side of the first fixed plate 1. The outlet of the water tank 205 is fixedly connected to the inlet of the first pipe 204. The outlet of the first pipe 204 is fixedly connected to one side of the protective sleeve 201. The interior of the protective sleeve 201 is fixedly connected to one end of the first extrusion tube 202. The outer cylindrical surface of the first extrusion tube 202 is sleeved with the interior of the heating tube 203. One side of the protective sleeve 201 is fixedly connected to the inlet of the second pipe 207. The outlet of the second pipe 207 is fixedly connected to the inlet of the pump 206. The outlet of the pump 206 is fixedly connected to the connecting pipe of the water tank 205. When the temperature of the heating tube 203 is too high, water is transported to the protective sleeve 201 through the pump 206 to prevent the extrusion head from being damaged by excessive temperature. The water is circulated to the water tank 205 through the second pipe 207, effectively controlling the temperature of the first extrusion tube 202.

[0039] Working principle: The electric telescopic rod 6 can push the first fixed plate 1 to rotate on the second fixed plate 7, and the thermoplastic material is poured into the mixing drum 11. The second motor 13 drives the stirring shaft 12 to stir the material inside the mixing drum 11, and then enters the extrusion drum 303 through the feeding pipe 9. The material inside the extrusion drum 303 is melted by the heater 308, and the first motor 301 drives the conveying shaft 302 to convey the material, and then the material is extruded through the extrusion shaft 304. The heating temperature of the heater 308 can be observed through the temperature controller 4. When the temperature is too high, the temperature can be lowered through the temperature control mechanism 2. The water in the water tank 205 is transported to the protective cover 201 through the pump 206 to cool the heating tube 203 inside the protective cover 201. The temperature of the material can be controlled when the material is extruded. After the work is completed, the first fixed plate 1 is pushed up by the electric telescopic rod 6 to lift the extrusion cylinder 303, and the excess waste is discharged through the discharge pipe 306 through the conveying shaft 302. This solves the problem of difficulty in controlling the temperature of the extrusion device and effectively improves the extrusion efficiency of thermoplastic materials.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A device for melt extrusion of thermoplastic granular material, comprising a first fixed plate (1), characterized in that: A temperature control mechanism (2) is provided on one side of the first fixed plate (1), and the temperature control mechanism (2) comprises a water tank (205) fixedly connected to one side of the first fixed plate (1); the outlet of the water tank (205) is fixedly connected to the inlet of the first pipe (204); the outlet of the first pipe (204) is fixedly connected to one side of the protective sleeve (201); the interior of the protective sleeve (201) is fixedly connected to one end of the first extrusion tube (202); the outer circular surface of the first extrusion tube (202) is sleeved with the interior of the heating tube (203); one side of the protective sleeve (201) is fixedly connected to the inlet of the second pipe (207); the outlet of the second pipe (207) is fixedly connected to the inlet of the pump (206); and the outlet of the pump (206) is fixedly connected to the connecting pipe of the water tank (205).

2. The device for melt-extruding thermoplastic granular material according to claim 1, characterized in that: The upper end of one side of the first fixed plate (1) is rotatably connected to the fixed end of the electric telescopic rod (6), the telescopic end of the electric telescopic rod (6) is rotatably connected to the lower surface of the second fixed plate (7), and one end of the second fixed plate (7) is rotatably connected to one end of the first fixed plate (1).

3. The device for melt extrusion of thermoplastic granular material according to claim 1, characterized in that: An extrusion mechanism (3) is provided on the other side of the first fixed plate (1), and the extrusion mechanism (3) comprises an extrusion cylinder (303) fixedly connected to the other side of the first fixed plate (1), the upper end of the extrusion cylinder (303) is fixedly connected to one side of the first motor (301), the output shaft of the first motor (301) is fixedly connected to one end of the conveying shaft (302), and the other end of the conveying shaft (302) is fixedly connected to the extrusion shaft (304).

4. The device for melt-extruding thermoplastic granular material according to claim 3, characterized in that: The interior of the extrusion barrel (303) is fixedly connected to the heater (308), one side of the heater (308) is fixedly connected to the output end of the connecting line (5), the output end of the connecting line (5) is fixedly connected to the temperature controller (4), and one side of the temperature controller (4) is fixedly connected to one side of the first fixed plate (1).

5. The device for melt-extruding thermoplastic granular material according to claim 3, characterized in that: The upper end of one side of the extrusion cylinder (303) is fixedly connected to one end of the feed pipe (9), the other end of the feed pipe (9) is fixedly connected to the lower surface of the stirring cylinder (11), the upper surface of the stirring cylinder (11) is fixedly connected to one side of the second motor (13), and the output shaft of the second motor (13) is fixedly connected to one end of the stirring shaft (12).

6. The device for melt-extruding thermoplastic granular material according to claim 5, characterized in that: A second control valve (10) is provided in the middle of the feed pipe (9), the lower end of one side of the mixing drum (11) is fixedly connected to one end of the fixed column (8), and the other end of the fixed column (8) is fixedly connected to the upper end of one side of the extrusion drum (303).

7. The device for melt-extruding thermoplastic granular material according to claim 3, characterized in that: The lower end of one side of the extrusion cylinder (303) is fixedly connected to one end of the discharge pipe (306), and the middle part of the discharge pipe (306) is fixedly connected to the first control valve (307).

8. The device for melt-extruding thermoplastic granular material according to claim 3, characterized in that: The lower end of the extrusion barrel (303) is fixedly connected to one end of the second extrusion tube (305), the outer circular surface of the second extrusion tube (305) is fixedly connected to one end of the protective tube sleeve, and the base inlet of the second extrusion tube (305) is fixedly connected to one end of the first extrusion tube (202).

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