Extruder for the production of a polyamide material

Abstract

This utility model discloses an extruder for preparing polyamide materials, including an extruder body. A feed pipe is connected to the upper end face of the extruder body, and a feed box is fixedly mounted on the upper end face of the feed pipe. A horizontal plate is fixedly mounted on the upper end face of the feed box, and a first motor is mounted on the upper end face of the horizontal plate. A rotating shaft is mounted at the output end of the first motor, and the bottom of the rotating shaft extends into the feed pipe. Spiral conveying blades are mounted on the outer wall of the rotating shaft, and a scraper is mounted on the outer side of the spiral conveying blades. Thus, when feeding material into the extruder body, the rotating shaft can be controlled by the first motor to rotate the spiral conveying blades, allowing the raw material accumulated inside the feed box to quickly leak out. Simultaneously, a cylinder can be controlled to move the scraper downwards to reduce residue on the inner wall of the feed box, facilitating use.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, and more specifically, to an extruder for preparing polyamide materials. Background Technology

[0002] Polyamide (PA), especially PA6 and PA66, is a very important class of engineering plastics. They have excellent mechanical strength, wear resistance, heat resistance and chemical stability. Due to their unique material properties, they are used as the main raw material for plastic materials. The main body of a plastic extruder is the extruder, which consists of an extrusion system, a transmission system and a heating and cooling system. The extrusion system includes a screw, barrel, hopper, die head and mold. The plastic is plasticized into a uniform melt through the extrusion system, and under the pressure built up in this process, it is continuously extruded by the screw through the die head.

[0003] However, in the use of traditional extruders, the main material is mostly added into the extruder body through the feed hopper. After long-term use, the inner wall of the feed hopper will inevitably have the problem of raw materials sticking to it, which will lead to the waste of some materials and increase the cost of use. Furthermore, most existing extruders are closed, integrated structures, making it difficult to clean their interiors after use. Over time, this can affect the normal operation of the extruder. Utility Model Content

[0004] (a) Technical problems to be solved To address the problems existing in the prior art, this utility model provides an extruder for preparing polyamide materials, which solves the technical problem mentioned in the background art that, in the use of traditional extruders, most of them add the main material into the interior of the extruder body through the feed hopper. After long-term use, the inner wall of the feed hopper inevitably becomes sticky with raw materials.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an extruder for preparing polyamide materials, comprising an extruder body, a feed pipe connected to the upper end face of the extruder body, a feed box fixedly mounted on the upper end face of the feed pipe, a horizontal plate fixedly mounted on the upper end face of the feed box, a first motor mounted on the upper end face of the horizontal plate, a rotating shaft mounted at the output end of the first motor, the bottom of the rotating shaft extending into the feed pipe, a spiral conveying blade mounted on the outer wall of the rotating shaft, a scraper mounted on the outer side of the spiral conveying blade, the scraper being slidably mounted to the inner wall of the feed box, a frame fixedly mounted on the upper end face of the horizontal plate, a cylinder mounted on the upper end face of the frame, guide rods fixedly mounted on both sides of the upper end face of the scraper, a lifting plate fixedly mounted on the upper end face of the guide rods, the output end of the cylinder being fixedly connected to the lifting plate, and the guide rods being slidably mounted to the horizontal plate. The extruder body comprises an upper shell and a lower shell.

[0006] The present invention is further configured such that sealing slots are provided at both ends of the upper housing, and sealing blocks are fixedly provided at both ends of the lower housing. The sealing blocks are located inside the sealing slots. Connecting plates are fixedly provided at both ends of the upper housing and the lower housing. The two sets of connecting plates are fixedly installed by bolts, and multiple bolts are provided and evenly distributed.

[0007] The present invention is further provided with a sealing gasket at the connection position between the sealing plug and the sealing slot.

[0008] The present invention is further configured such that a conical barrel is fixedly provided at one end of the lower housing, a discharge pipe is fixedly provided on the outer wall of the conical barrel, a discharge head is provided on one side of the discharge pipe, a retaining ring is fixedly provided at one end of the discharge head, a corresponding retaining groove is provided on the inner wall of the discharge pipe, the retaining ring is located inside the retaining groove, and a rubber gasket is provided at its connection position.

[0009] The present invention is further configured such that a fastening nut is provided at the connection position between the discharge head and the discharge pipe, and the fastening nut is threadedly connected to the outer wall of the discharge pipe.

[0010] The present invention is further provided that a guide pipe is fixedly provided on the outer wall of the feed box at the upper end.

[0011] The present invention is further configured such that an extrusion assembly is rotatably provided inside the extruder body, and a second motor is fixedly provided at one end of the extrusion assembly and on the outer wall of the extruder body.

[0012] The present invention is further provided that a support is fixedly provided at the bottom of the lower housing.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides an extruder for preparing polyamide materials, which has the following advantages: 1. By setting up a feed box, rotating shaft, spiral conveyor blades and scraper, when feeding material into the extruder body, the rotating shaft can be driven by the first motor to rotate the spiral conveyor blades, so that the raw material accumulated inside the feed box can be quickly discharged. At the same time, the cylinder can be controlled to move the scraper downward to reduce the residue on the inner wall of the feed box, which is convenient to use.

[0014] 2. By setting up an upper shell, a lower shell, a sealing block, and a connecting plate, the upper and lower shells can be disassembled after use by removing the bolts on the connecting plate. This facilitates the cleaning of the polyamide material adhering to the inner wall, preventing problems such as sticking or even clogging after prolonged use. At the same time, when installing the upper and lower shells, the sealing block can be inserted into the sealing slot and abut against the sealing gasket to further increase the sealing of the connection and facilitate subsequent use.

[0015] 3. By setting up a discharge pipe, discharge head, and fastening nut, the user can remove the retaining ring from the inside of the retaining groove by removing the fastening nut, which facilitates the disassembly of the discharge head. This also helps to install other types of discharge heads, making it easier to extrude polyamide material into lines of different diameters, thereby increasing the flexibility of the device during use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an extruder used for preparing polyamide materials in its unused state. Figure 2 A sectional view showing the installation of the feed pipe, feed box, first motor, rotating shaft, screw conveyor blades, and scraper. Figure 3 Exploded view of the installation of the upper shell, lower shell, gasket, and connecting plate; Figure 4 This is a schematic diagram showing the positions of the extrusion assembly, the second motor, and the support within the lower housing. Figure 5 An exploded view showing the installation of the discharge pipe, discharge head, retaining ring, retaining groove, rubber gasket, and fastening nut on the conical barrel.

[0017] In the diagram: 1. Extruder body; 2. Feed pipe; 3. Feed box; 4. Horizontal plate; 5. First motor; 6. Rotating shaft; 7. Screw conveyor blades; 8. Scraper; 9. Frame; 10. Cylinder; 11. Guide rod; 12. Lifting plate; 13. Upper housing; 14. Lower housing; 15. Sealing slot; 16. Sealing block; 17. Connecting plate; 18. Sealing gasket; 19. Conical barrel; 20. Discharge pipe; 21. Discharge head; 22. Snap ring; 23. Snap groove; 24. Rubber gasket; 25. Fastening nut; 26. Guide pipe; 27. Extrusion assembly; 28. Second motor; 29. ​​Support. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] Please see Figure 1-5 An extruder for preparing polyamide materials includes an extruder body 1. A feed pipe 2 is connected to the upper end face of the extruder body 1. A feed box 3 is fixedly mounted on the upper end face of the feed pipe 2. A horizontal plate 4 is fixedly mounted on the upper end face of the feed box 3. A first motor 5 is mounted on the upper end face of the horizontal plate 4. A rotating shaft 6 is mounted at the output end of the first motor 5. The bottom of the rotating shaft 6 extends into the feed pipe 2. Spiral conveying blades 7 are mounted on the outer wall of the rotating shaft 6. A scraper 8 is mounted on the outer side of the spiral conveying blades 7. The scraper 8 is slidably installed on the inner wall of the feed box 3. The upper end of the horizontal plate 4 is fixedly provided with the frame 9. The upper end of the frame 9 is provided with the cylinder 10. The upper end of the scraper 8 and both sides are fixedly provided with guide rods 11. The upper end of the guide rods 11 is fixedly provided with the lifting plate 12. The output end of the cylinder 10 is fixedly connected to the lifting plate 12. The guide rods 11 and the horizontal plate 4 are slidably installed. The extruder body 1 includes an upper shell 13 and a lower shell 14. The feed box 3 is fixedly provided with a guide pipe 26 on the outer wall and at the upper end.

[0022] In this embodiment, sealing slots 15 are provided at both ends of the upper housing 13, and sealing blocks 16 are fixedly provided at both ends of the lower housing 14. The sealing blocks 16 are located inside the sealing slots 15. Connecting plates 17 are fixedly provided at both ends of the upper housing 13 and the lower housing 14. The two sets of connecting plates 17 are fixedly installed by bolts. Multiple bolts are provided and are evenly distributed. A sealing gasket 18 is provided at the connection position between the sealing block 16 and the sealing slot 15. A support 29 is fixedly provided at the bottom of the lower housing 14.

[0023] More specifically, when feeding material into the extruder body, the first motor 5 can be controlled to make the rotating shaft 6 drive the spiral conveyor blades 7 to rotate, so that the raw material accumulated inside the feed box 3 can be quickly discharged. At the same time, the cylinder 10 can be controlled to make the scraper 8 move downward to reduce the residue on the inner wall of the feed box 3. After use, the upper shell 13 and the lower shell 14 can be separated by removing the bolts on the connecting plate 17 to facilitate the cleaning of the polyamide material adhering to their inner walls, so as to prevent the problem of adhesion or even blockage after long-term use. At the same time, when installing the upper shell 13 and the lower shell 14, the sealing block 16 can be inserted into the sealing slot 15 and abut against the sealing gasket 18 to further increase the sealing of the connection position and facilitate subsequent use.

[0024] Please see Figure 1 , Figure 4 and Figure 5 As an embodiment for replacing the discharge head 21: a conical barrel 19 is fixedly provided at one end of the lower housing 14, a discharge pipe 20 is fixedly provided on the outer wall of the conical barrel 19, a discharge head 21 is provided on one side of the discharge pipe 20, a retaining ring 22 is fixedly provided at one end of the discharge head 21, a retaining groove 23 is correspondingly provided on the inner wall of the discharge pipe 20, the retaining ring 22 is located inside the retaining groove 23, and a rubber gasket 24 is provided at its connection position. A fastening nut 25 is provided at the connection position between the discharge head 21 and the discharge pipe 20, and the fastening nut 25 is threadedly connected to the outer wall of the discharge pipe 20.

[0025] Specifically, the user can remove the retaining ring 22 from the inside of the retaining groove 23 by removing the fastening nut 25, so as to facilitate the disassembly of the discharge head 21, which in turn helps to install other models of discharge heads 21, so as to facilitate the extrusion of polyamide material into lines of different diameters, thereby increasing the flexibility of the device in use.

[0026] Please refer to Figure 4 As a further embodiment of extruding polyamide material: an extrusion assembly 27 is rotatably provided inside the extruder body 1, and a second motor 28 is fixedly provided at one end of the extrusion assembly 27 and on the outer wall of the extruder body 1.

[0027] Specifically, the user can control the second motor 28 to drive the extrusion assembly 27 to rotate, so as to push the raw material inside it to one end of the extruder body 1, so that it can be discharged through the discharge pipe 20 later.

[0028] In summary, when using the overall equipment: Polyamide material can first be guided into the feed box 3 through the feed pipe 26. Then, the first motor 5 can be controlled to drive the rotating shaft 6 to rotate the spiral conveyor blades 7, causing the raw material accumulated inside the feed box 3 to quickly leak out and enter the extruder body 1. Simultaneously, the cylinder 10 can be controlled to move the scraper 8 downwards to reduce residue on the inner wall of the feed box 3. During extrusion, the second motor 28 can be controlled to drive the extrusion assembly 27 to rotate, pushing the raw material inside towards one end of the extruder body 1 and discharging it through the discharge pipe 20 and discharge head 21. Furthermore, the user can remove the retaining ring 22 from the retaining groove 23 by unfastening the fastening nut 25. The internal parts are removed to facilitate the disassembly of the discharge head 21, which in turn facilitates the installation of other models of discharge heads 21. This allows for the extrusion of polyamide material into lines of different diameters, thereby increasing the flexibility of the device during use. After use, the upper housing 13 and the lower housing 14 can be separated by removing the bolts on the connecting plate 17 to facilitate the cleaning of the polyamide material adhering to their inner walls, preventing problems such as sticking or even clogging after prolonged use. At the same time, when installing the upper housing 13 and the lower housing 14, the sealing block 16 can be inserted into the sealing slot 15 and abut against the sealing gasket 18 to further increase the sealing of the connection position and facilitate subsequent use.

[0029] The motors mentioned above are all controlled by controllers or drivers. Since the controllers and matching equipment are common devices and belong to existing mature technologies, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0030] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An extruder for preparing polyamide materials, comprising an extruder body (1), characterized in that: The upper end face of the extruder body (1) is connected to a feed pipe (2), and a feed box (3) is fixedly provided on the upper end face of the feed pipe (2). A horizontal plate (4) is fixedly provided on the upper end face of the feed box (3). A first motor (5) is provided on the upper end face of the horizontal plate (4). A rotating shaft (6) is provided at the output end of the first motor (5). The bottom of the rotating shaft (6) extends into the feed pipe (2). A spiral conveying blade (7) is provided on the outer wall of the rotating shaft (6). A scraper (8) is provided on the outer side of the spiral conveying blade (7). (8) Slidingly installed on the inner wall of the feed box (3), the upper end face of the horizontal plate (4) is fixedly provided with a frame (9), the upper end face of the frame (9) is provided with a cylinder (10), the upper end face of the scraper (8) and both sides are fixedly provided with guide rods (11), the upper end face of the guide rod (11) is fixedly provided with a lifting plate (12), the output end of the cylinder (10) is fixedly connected to the lifting plate (12), the guide rod (11) is slidably installed with the horizontal plate (4), and the extruder body (1) includes an upper shell (13) and a lower shell (14).

2. An extruder for polyamide material production according to claim 1, characterized in that: The upper housing (13) has sealing slots (15) at both ends, and the lower housing (14) has sealing blocks (16) fixed at both ends. The sealing blocks (16) are located inside the sealing slots (15). The upper housing (13) and the lower housing (14) have connecting plates (17) fixed at both ends. The two sets of connecting plates (17) are fixedly installed with bolts. There are multiple bolts and they are evenly distributed.

3. The extruder for preparing polyamide materials according to claim 2, characterized in that: A sealing gasket (18) is provided at the connection position between the sealing plug (16) and the sealing slot (15).

4. The extruder for preparing polyamide materials according to claim 1, characterized in that: One end of the lower housing (14) is fixedly provided with a conical barrel (19), and a discharge pipe (20) is fixedly provided on the outer wall of the conical barrel (19). A discharge head (21) is provided on one side of the discharge pipe (20), and a retaining ring (22) is fixedly provided at one end of the discharge head (21). A corresponding retaining groove (23) is provided on the inner wall of the discharge pipe (20). The retaining ring (22) is located inside the retaining groove (23), and a rubber gasket (24) is provided at its connection position.

5. An extruder for preparing polyamide materials according to claim 4, characterized in that: The connection between the discharge head (21) and the discharge pipe (20) is provided with a fastening nut (25), and the fastening nut (25) is threadedly connected to the outer wall of the discharge pipe (20).

6. The extruder for preparing polyamide materials according to claim 1, characterized in that: A guide pipe (26) is fixedly provided on the outer wall of the feed box (3) at the upper end.

7. An extruder for preparing polyamide materials according to claim 1, characterized in that: The extruder body (1) is equipped with an extrusion assembly (27) that rotates inside. A second motor (28) is fixedly installed at one end of the extrusion assembly (27) on the outer wall of the extruder body (1).

8. An extruder for preparing polyamide materials according to claim 2, characterized in that: The bottom of the lower housing (14) is fixedly provided with a support (29).

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