Temperature adjusting device of screw extruder

Abstract

The invention discloses a screw extruder temperature adjusting device which is provided with a workbench, a supporting frame is arranged at the top of the workbench, an extrusion cylinder is arranged in the supporting frame, a feeding cylinder is arranged on one side of the top of the extrusion cylinder, a first screw is arranged in the extrusion cylinder, and a fourth rotating shaft is fixed in the first screw. A third heating ring is arranged at the tail end of the outer side of the fourth rotating shaft, a second heat insulation barrel is fixed in the fourth rotating shaft, a third rotating shaft is fixed in the second heat insulation barrel, a second heating ring is arranged at the tail end of the outer side of the third rotating shaft, a first heat insulation barrel is fixed in the third rotating shaft, and a second rotating shaft is fixed in the first heat insulation barrel; a first heating ring is arranged at the tail end of the outer side of the second rotating shaft. The heater in the workbench is used for heating the multiple sets of heating rods for heating at different temperatures.

Description

Technical Field

[0001] This invention relates to the field of screw extruder temperature control device. Background Technology

[0002] A screw extruder is a mechanical device used for processing and producing polymer materials. Its main function is to melt, mix, and extrude solid or semi-solid polymer materials to form products in the shapes of plastic films, tubes, sheets, and rods. In modern industrial production, twin-screw extruders are widely used in plastics, rubber, food, pharmaceuticals, cosmetics, and other fields.

[0003] A screw extruder is a type of plastic pipe production equipment. It relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and uniformly mix the material, which is then formed through a die to achieve continuous extrusion.

[0004] In current extruders, the surface temperature of the screw cannot be adjusted independently during heated extrusion, resulting in some extruded products having defective shapes. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a temperature regulating device for a screw extruder to solve the technical problem that the surface temperature of the screw cannot be adjusted independently.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a screw extruder temperature regulating device, comprising a worktable, a support frame provided on the top of the worktable, an extrusion cylinder provided inside the support frame, a feed cylinder provided on one side of the top of the extrusion cylinder, a No. 1 screw provided inside the extrusion cylinder, a No. 4 rotating shaft fixed inside the No. 1 screw, a No. 3 heating coil provided at the outer end of the outer side of the No. 4 rotating shaft, and a No. 2 heat insulation cylinder fixed inside the No. 4 rotating shaft.

[0007] The present invention is further configured such that a motor is installed on one side of the top of the workbench, a fixed frame is fixed on the top of the workbench on the side of the motor, a first transmission wheel is provided at the bottom of one side of the fixed frame, and a second transmission wheel is provided at the top of one side of the fixed frame.

[0008] The present invention is further configured such that a third rotating shaft is fixed inside the second heat insulation cylinder, a second heating ring is provided at the outer end of the third rotating shaft, a first heat insulation cylinder is fixed inside the third rotating shaft, a second rotating shaft is fixed inside the first heat insulation cylinder, and a first heating ring is provided at the outer end of the second rotating shaft.

[0009] The present invention is further configured such that a second screw is provided on one side of the first screw, a third screw is provided on one side of the second screw, a fixed cylinder is provided on the other side of the first screw, a screw cylinder is fixed on one side of the fixed cylinder, and a first rotating shaft rotates inside the screw cylinder; The first end of the No. 3 rotating shaft is fixedly connected to the inside of the No. 2 screw, the first end of the No. 2 rotating shaft is fixedly connected to the inside of the No. 3 screw, and the first end of the No. 1 rotating shaft is fixedly connected to the end of the No. 2 rotating shaft.

[0010] The present invention is further configured such that heating rods are provided at the top of heating coils No. 3, No. 2 and No. 1, and the ends of the heating rods are connected to the inside of the worktable.

[0011] The present invention is further configured such that chains are provided on the outer sides of the first transmission wheel and the second transmission wheel, the output end of the motor is fixedly connected to one side of the first transmission wheel, and the other side of the second transmission wheel is fixedly connected to the end of the first rotating shaft.

[0012] In summary, the present invention has the following main beneficial effects: The motor rotates, driving the first transmission wheel to rotate. The first transmission wheel then drives the second transmission wheel to rotate via a chain. The second transmission wheel drives the second shaft to rotate, which in turn drives the third and fourth shafts to rotate. These shafts then drive the first, second, and third screws to rotate. The workbench is equipped with heaters that heat multiple sets of heating rods to achieve different temperatures.

[0013] Heating coils 1, 2, and 3 are heated by heating rods. These heating coils, in turn, heat shafts 2, 3, and 4. Shafts 2, 3, and 4 then heat screws 1, 2, and 3, respectively, thus heating different locations. Screws 1, 2, and 3 rotate and compress the material in the extrusion cylinder, causing the material to be extruded and shaped. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of the extrusion cylinder of the present invention.

[0016] Figure 3 This is a schematic diagram of the No. 1, No. 2, and No. 3 screw structures of the present invention.

[0017] Figure 4 This is a schematic diagram of the internal structure of screws No. 1, 2, and 3 of the present invention.

[0018] Figure 5 for Figure 4 A magnified view of A in the middle.

[0019] In the diagram: 1. Workbench; 101. Motor; 102. Transmission wheel 1; 103. Transmission wheel 2; 104. Fixing frame; 105. Chain; 2. Extrusion cylinder; 201. Support frame; 202. Feed cylinder; 3. Screw barrel; 301. Shaft 1; 302. Fixing cylinder; 303. Screw 1; 304. Screw 2; 305. Screw 3; 4. Shaft 2; 401. Heating coil 1; 402. Shaft 3; 403. Insulation cylinder 1; 404. Heating coil 2; 405. Shaft 4; 406. Insulation cylinder 2; 407. Heating coil 3; 408. Heating rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] The embodiments of the present invention will now be described.

[0022] A temperature control device for a screw extruder, such as Figure 1-5 As shown, the device includes a workbench 1, a support frame 201 on the top of the workbench 1, an extrusion cylinder 2 inside the support frame 201, a feed cylinder 202 on one side of the top of the extrusion cylinder 2, material is poured into the feed cylinder 202 and enters the extrusion cylinder 2 from the feed cylinder 202, a first screw 303 is installed inside the extrusion cylinder 2, a fourth rotating shaft 405 is fixed inside the first screw 303, a third heating ring 407 is installed at the outer end of the fourth rotating shaft 405, and a second heat insulation cylinder 406 is fixed inside the fourth rotating shaft 405. Inside the second heat insulation cylinder 406, a third rotating shaft 402 is fixed. The second rotating shaft 4, the third rotating shaft 402, and the fourth rotating shaft 405 heat the first screw 303, the second screw 304, and the third screw 305, thereby heating different positions. A second heating ring 404 is provided at the outer end of the third rotating shaft 402. Inside the third rotating shaft 402, a first heat insulation cylinder 403 is fixed. Inside the first heat insulation cylinder 403, a second rotating shaft 4 is fixed. The second rotating shaft 4 drives the third rotating shaft 402 and the fourth rotating shaft 405 to rotate. The second rotating shaft 4, the third rotating shaft 402, and the fourth rotating shaft 405 drive the first screw 303, the second screw 304, and the third screw 305 to rotate. A first heating ring 401 is provided at the outer end of the second rotating shaft 4.

[0023] It should be noted that the second rotating shaft 4 drives the third rotating shaft 402 and the fourth rotating shaft 405 to rotate. The second rotating shaft 4, the third rotating shaft 402, and the fourth rotating shaft 405 drive the first screw 303, the second screw 304, and the third screw 305 to rotate. The heater inside the worktable 1 heats multiple sets of heating rods 408 to achieve different temperatures. The heating rods 408 heat the first heating coil 401, the second heating coil 404, and the third heating coil 407. The first heating coil 401, the second heating coil 404, and the third heating coil 407 in turn heat the second rotating shaft 4, the third rotating shaft 402, and the fourth rotating shaft 405.

[0024] Please refer to this carefully. Figure 2-5 A second screw 304 is provided on one side of the first screw 303. The first screw 303, the second screw 304, and the third screw 305 rotate and squeeze the material in the extrusion cylinder 2, so that the material is extruded and shaped. A third screw 305 is provided on one side of the second screw 304. A fixed cylinder 302 is provided on the other side of the first screw 303. A screw cylinder 3 is fixed on one side of the fixed cylinder 302. A first rotating shaft 301 rotates inside the screw cylinder 3. The first end of the third rotating shaft 402 is fixedly connected to the inside of the second screw 304, the first end of the second rotating shaft 4 is fixedly connected to the inside of the third screw 305, and the first end of the first rotating shaft 301 is fixedly connected to the end of the second rotating shaft 4. Heating rods 408 are provided on the top of heating coil 407, heating coil 404, and heating coil 401. The ends of heating rods 408 are connected to the inside of worktable 1.

[0025] It should be noted that the No. 1 screw 303, No. 2 screw 304, and No. 3 screw 305 are heated by the No. 4 rotating shaft, the No. 3 rotating shaft, and the No. 4 rotating shaft, thereby heating different positions. The No. 1 screw 303, the No. 2 screw 304, and the No. 3 screw 305 rotate and squeeze the material in the extrusion cylinder 2, so that the material is extruded and shaped.

[0026] Please refer to this carefully. Figure 1 A motor 101 is installed on one side of the top of the workbench 1. A fixed frame 104 is fixed on the top of the workbench 1 on one side of the motor 101. A first transmission wheel 102 is provided at the bottom of one side of the fixed frame 104, and a second transmission wheel 103 is provided at the top of one side of the fixed frame 104. The rotation of motor 101 drives the first transmission wheel 102 to rotate. A chain 105 is provided on the outer side of the first transmission wheel 102 and the second transmission wheel 103. The first transmission wheel 102 drives the second transmission wheel 103 to rotate through the chain 105. The output end of motor 101 is fixedly connected to one side of the first transmission wheel 102, and the other side of the second transmission wheel 103 is fixedly connected to the end of the first rotating shaft 301.

[0027] It is understandable that the rotation of motor 101 drives the first transmission wheel 102 to rotate, the first transmission wheel 102 drives the second transmission wheel 103 to rotate via chain 105, and the second transmission wheel 103 drives the second rotating shaft 4 to rotate.

[0028] Working principle: The material is poured into the feed cylinder 202 and enters the extrusion cylinder 2. The motor 101 rotates, driving the first transmission wheel 102 to rotate. The first transmission wheel 102 drives the second transmission wheel 103 to rotate via the chain 105. The second transmission wheel 103 drives the second rotating shaft 4 to rotate. The second rotating shaft 4 drives the third rotating shaft 402 and the fourth rotating shaft 405 to rotate. The second rotating shaft 4, the third rotating shaft 402, and the fourth rotating shaft 405 drive the first screw 303, the second screw 304, and the third screw 305 to rotate. The material is heated by multiple heating rods 408 inside the worktable 1. Heating at different temperatures, heating rod 408 heats heating coils 401, 404, and 407. Heating coils 401, 404, and 407 in turn heat rotating shafts 4, 402, and 405. Rotating shafts 4, 402, and 405 in turn heat screws 303, 304, and 305, thus heating different locations. Screws 303, 304, and 305 rotate and compress the material in extrusion cylinder 2, causing the material to be extruded and shaped.

[0029] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A temperature regulating device for a screw extruder, comprising a worktable (1), characterized in that: The workbench (1) is provided with a support frame (201) on top. An extrusion cylinder (2) is provided inside the support frame (201). A feed cylinder (202) is provided on one side of the top of the extrusion cylinder (2). A screw (303) is provided inside the extrusion cylinder (2). A shaft (405) is fixed inside the screw (303). A heating coil (407) is provided at the outer end of the shaft (405). A heat insulation cylinder (406) is fixed inside the shaft (405). The No. 3 rotating shaft (402) is fixed inside the No. 2 heat insulation cylinder (406). The No. 2 heating ring (404) is provided at the outer end of the No. 3 rotating shaft (402). The No. 1 heat insulation cylinder (403) is fixed inside the No. 3 rotating shaft (402). The No. 2 rotating shaft (4) is fixed inside the No. 1 heat insulation cylinder (403). The No. 1 heating ring (401) is provided at the outer end of the No. 2 rotating shaft (4).

2. The temperature regulating device for a screw extruder according to claim 1, characterized in that: A second screw (304) is provided on one side of the first screw (303), a third screw (305) is provided on one side of the second screw (304), a fixed cylinder (302) is provided on the other side of the first screw (303), a screw cylinder (3) is fixed on one side of the fixed cylinder (302), and a first rotating shaft (301) rotates inside the screw cylinder (3). The first end of the third rotating shaft (402) is fixedly connected to the inside of the second screw (304), the first end of the second rotating shaft (4) is fixedly connected to the inside of the third screw (305), and the first end of the first rotating shaft (301) is fixedly connected to the end of the second rotating shaft (4).

3. The temperature regulating device for a screw extruder according to claim 1, characterized in that: Heating rods (408) are provided on the top of heating coils No. 3 (407), No. 2 (404), and No. 1 (401), and the ends of the heating rods (408) are connected to the inside of the workbench (1).

4. The temperature regulating device for a screw extruder according to claim 1, characterized in that: A motor (101) is installed on one side of the top of the workbench (1). A fixed frame (104) is fixed on the top of the workbench (1) on one side of the motor (101). A first transmission wheel (102) is provided at the bottom of one side of the fixed frame (104), and a second transmission wheel (103) is provided at the top of one side of the fixed frame (104). Chains (105) are provided on the outer sides of the first transmission wheel (102) and the second transmission wheel (103). The output end of the motor (101) is fixedly connected to one side of the first transmission wheel (102), and the other side of the second transmission wheel (103) is fixedly connected to the end of the first rotating shaft (301).

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