High efficiency extruder screw

Abstract

This utility model belongs to the field of extruder screw technology, and particularly relates to a high-efficiency extruder screw. The utility model includes an extruder body, which comprises a drive unit, an extrusion device, and a support mechanism. The drive unit consists of a screw gearbox, a feed hopper, and an extrusion screw. The extrusion device is fixedly mounted on a processing table. A support mechanism is fixedly mounted on one side of the processing table, below the extrusion device. The support mechanism consists of a telescopic rod, a connecting seat, and a support base. The bottom of the connecting seat is fixedly mounted on the top of the telescopic rod. This utility model divides the extrusion screw into three sections by two grinding blocks, with notches provided on the threaded teeth on the outer wall of the screw. This not only improves product processing quality, but the support mechanism at the bottom of the processing table also ensures high efficiency and safety during screw cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of extruder screw technology and relates to a high-efficiency extruder screw. Background Technology

[0002] A screw extruder is a machine that uses the pressure and shearing force generated by the rotating screw to fully plasticize and uniformly mix materials, which are then shaped through a die. When plastic material enters the extruder from the hopper, it is conveyed forward by the rotating screw. During this process, it is heated by the barrel, sheared by the screw, and compressed, melting and undergoing three phases: glassy, ​​elastic, and viscous. Under pressure, the viscous material passes through a die of a specific shape, becoming a continuous body similar to the cross-section of the die. It is then cooled and solidified into a glassy state, yielding the desired part. The screw is a crucial component of the extruder.

[0003] Current extruder screw structures are relatively fixed, usually being a single-piece cast unit. To maintain better extrusion performance, various threaded teeth are evenly arranged on the screw. However, the threaded teeth in existing screws are basically arranged in one direction, so the processing of raw materials can only be done in one go, resulting in generally poor grinding quality. At the same time, existing extruder screws need to be removed for cleaning after a period of use. Since the screw itself is heavy, multiple people are needed to lift it down and clean it with a grinder, which not only poses safety hazards but is also inefficient. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a high-efficiency extruder screw, including an extruder body. The extruder body consists of a drive device, an extrusion device, and a support mechanism. The drive device consists of a screw gearbox, a feed hopper, and an extrusion screw. The extrusion device is fixedly mounted on a processing table. A support mechanism is fixedly mounted on one side of the processing table and below the extrusion device. The support mechanism consists of a telescopic rod, a connecting seat, and a support seat. The bottom of the connecting seat is fixedly mounted on the top of the telescopic rod, and the top of the connecting seat is fixedly connected to the support seat. One end of the extrusion screw is placed inside the extrusion device, and the other end is drivenly connected to the screw gearbox.

[0005] In the aforementioned high-efficiency extruder screw, the extrusion screw is divided into three parts: a first screw section, a second screw section, and a third screw section. A number of threaded teeth are evenly distributed on the outer wall surfaces of the first screw section, the second screw section, and the third screw section.

[0006] In the aforementioned high-efficiency extruder screw, a support pin is fixedly connected to one end of the first screw section, and a second screw section is fixedly connected to the other end of the first screw section. A grinding block is provided at the connection between the first screw section and the second screw section.

[0007] In the aforementioned high-efficiency extruder screw, a third screw section is fixedly connected to the other end of the second screw section, and a second grinding block is provided at the connection between the second screw section and the third screw section, wherein the grinding teeth of the first grinding block have a finer grinding degree than those of the second grinding block.

[0008] In the aforementioned high-efficiency extruder screw, the other end of the third screw section is provided with a mounting groove, and a plurality of mounting holes are evenly arranged inside the mounting groove. The mounting groove is fixedly connected to a drive shaft by bolts, and the other end of the drive shaft is drivenly connected to a screw gearbox.

[0009] In the aforementioned high-efficiency extruder screw, the outer wall surfaces of the threaded teeth in the first, second, and third screw sections are fitted and connected to the interior of the extrusion equipment, wherein corresponding notches are uniformly provided on both sides of the threaded teeth in the middle sections of the first, second, and third screw sections.

[0010] In the aforementioned high-efficiency extruder screw, the bottom of the telescopic rod is fixedly installed on the lower side of the processing table by screws, and the other end of the telescopic rod is fixedly connected to the bottom of the connecting seat, with connecting holes provided on both sides of the connecting seat.

[0011] In the aforementioned high-efficiency extruder screw, the bottom of the support base is fixedly connected to the connecting base by screws, wherein the top end face of the support base is set as an arc-shaped groove structure, and two corresponding brush plates are fixedly connected to the inner wall of the support base.

[0012] In the aforementioned high-efficiency extruder screw, the support base is fixedly connected to a support plate at both its front and rear ends, and two guide wheels are connected inside the support plate for transmission.

[0013] In the aforementioned high-efficiency extruder screw, the brush plate is attached to the bottom of the extrusion screw by the telescopic movement of the telescopic rod and is stably supported by the guide wheel.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] This invention comprises an extrusion screw divided into three parts. Each part has threaded teeth on its outer wall for crushing and extruding plastic particles. U-shaped notches on both sides of the threaded teeth allow for movement of partially crushed plastic raw materials, extending processing time. Grinding blocks of different sizes are fixedly connected at the junction of the three screw sections to further improve processing quality. A drive shaft is bolted to one end of the extrusion screw, with the other end connected to a screw gearbox. This facilitates drive shaft replacement and maintenance, extending the screw's lifespan. A telescopic rod is fixedly installed on the processing table below the screw, with a support base fixedly connected to its top. The telescopic rod allows the support base to move up and down. The top face of the support base is arc-shaped, and two brush plates are fixedly installed on its inner wall. This provides stable support for the extruded screw and facilitates cleaning, enhancing practicality and safety.

[0016] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a front view of the extrusion screw of this utility model.

[0019] Figure 3 This is a top view of the drive shaft of this utility model.

[0020] Figure 4 This is a top view of the mounting slot of this utility model.

[0021] Figure 5 This is a front view of the grinding block of this utility model.

[0022] Figure 6 This is a front view of the threaded teeth of this utility model.

[0023] Figure 7 This is a top view of the support base of this utility model.

[0024] Figure 8 This is a side view of the support base of this utility model.

[0025] In the diagram: 1. Extruder body; 2. Drive unit; 21. Screw gearbox; 22. Feed hopper; 23. Extrusion screw; 231. First screw section; 2311. Support pin; 232. Second screw section; 233. Third screw section; 2331. Mounting groove; 2332. Mounting hole; 234. Thread teeth; 2341. Notch; 235. No. 1 grinding block; 236. No. 2 grinding block; 237. Drive shaft; 3. Extrusion equipment; 4. Support mechanism; 41. Telescopic rod; 42. Connecting seat; 43. Support seat; 44. Connecting hole; 45. Brush plate; 46. Support plate; 47. Guide wheel; 5. Processing table. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-8 As shown, a high-efficiency extruder screw includes an extruder body 1, which is composed of a drive unit 2, an extrusion device 3, and a support mechanism 4. The drive unit 2 consists of a screw gearbox 21, a feed funnel 22, and an extrusion screw 23. The extrusion device 3 is fixedly installed on a processing table 5. The support mechanism 4 is fixedly installed on one side of the processing table 5 and below the extrusion device 3. The support mechanism 4 consists of a telescopic rod 41, a connecting seat 42, and a support seat 43. The bottom of the connecting seat 42 is fixedly installed on the top of the telescopic rod 41, and the top of the connecting seat 42 is fixedly connected to the support seat 43. One end of the extrusion screw 23 is placed inside the extrusion device 3, and the other end is drivenly connected to the screw gearbox 21.

[0028] In this embodiment, a feed funnel 22 is fixedly installed on the screw transmission 21 to facilitate the feeding of plastic raw materials. An extrusion screw 23 is connected to the drive end of the screw transmission 21, so that the screw transmission 21 can drive the extrusion screw 23 to rotate. At the same time, the extrusion equipment 3 is fixedly installed on the processing table 5 to maintain the installation stability of the extrusion equipment 3. A support mechanism 4 is fixedly installed on one side of the processing table 5 to stably support the processing table 5, thereby supporting the extrusion screw 23 and ensuring safety during the cleaning process.

[0029] Combination Figure 2 As shown, the extrusion screw 23 is divided into three parts: a first screw section 231, a second screw section 232, and a third screw section 233. A plurality of threaded teeth 234 are evenly distributed on the outer wall surfaces of the first screw section 231, the second screw section 232, and the third screw section 233.

[0030] In this embodiment, by uniformly distributing a plurality of threaded teeth 234 on the outer wall surfaces of the first screw section 231, the second screw section 232, and the third screw section 233, the plastic raw material can be extruded and processed when the first screw section 231, the second screw section 232, and the third screw section 233 rotate.

[0031] Combination Figure 2 As shown, a support pin 2311 is fixedly connected to one end of the first screw segment 231, and a second screw segment 232 is fixedly connected to the other end of the first screw segment 231. A grinding block 235 is provided at the connection between the first screw segment 231 and the second screw segment 232.

[0032] In this embodiment, a support pin 2311 is fixedly connected to one end of the first screw section 231 to facilitate stable support of the first screw section 231 and maintain balance. At the same time, a grinding block 235 is provided at the connection between the first screw section 231 and the second screw section 232, thereby improving the grinding quality of plastic raw materials.

[0033] Combination Figure 2 , Figure 5 As shown, the other end of the second screw segment 232 is fixedly connected to the third screw segment 233, and a second grinding block 236 is provided at the connection between the second screw segment 232 and the third screw segment 233, wherein the grinding teeth of the first grinding block 235 have a finer grinding degree than the second grinding block 236.

[0034] In this embodiment, a second grinding block 236 is provided at the connection between the second screw section 232 and the third screw section 233, wherein the grinding teeth of the first grinding block 235 have a finer grinding degree than those of the second grinding block 236. This can further improve the processing quality of the product and achieve progressively finer processing.

[0035] Combination Figure 2 , Figure 4 As shown, the third screw section 233 is provided with a mounting groove 2331 at the other end. The mounting groove 2331 is provided with a plurality of mounting holes 2332 evenly arranged inside. The mounting groove 2331 is fixedly connected to a drive shaft 237 by bolts. The other end of the drive shaft 237 is connected to the screw gearbox 21 for transmission.

[0036] In this embodiment, by providing an installation groove 2331 at the other end of the third screw section 233 and fixing the drive shaft 237 to it with bolts, and simultaneously connecting the other end of the drive shaft 237 to the screw gearbox 21, not only can the extrusion screw 23 be rotated, but the drive shaft 237 can also be easily replaced and maintained.

[0037] Combination Figure 2 , Figure 6 As shown, the outer wall surfaces of the threaded teeth 234 in the first screw section 231, the second screw section 232, and the third screw section 233 are fitted and connected to the interior of the extrusion equipment 3. Corresponding notches 2341 are evenly provided on both sides of the threaded teeth 234 in the middle sections of the first screw section 231, the second screw section 232, and the third screw section 233.

[0038] In this embodiment, corresponding notches 2341 are evenly provided on both sides of the thread teeth 234 in the middle sections of the first screw section 231, the second screw section 232 and the third screw section 233. This not only allows the plastic raw material to undergo normal extrusion, but also allows the raw material to be mixed and ground in each screw section, thereby improving the processing quality of the product.

[0039] Combination Figure 1 , Figure 7 As shown, the bottom of the telescopic rod 41 is fixedly installed on the lower side of the processing table 5 by screws, and the other end of the telescopic rod 41 is fixedly connected to the bottom of the connecting seat 42, and connecting holes 44 are provided on both sides of the connecting seat 42.

[0040] In this embodiment, the bottom of the telescopic rod 41 is fixedly installed on the processing table 5 to facilitate stable support of the telescopic rod 41. At the same time, a connecting seat 42 is fixedly connected to the other end of the telescopic rod 41, so that the connecting seat 42 can be driven to move up and down by the telescopic rod 41.

[0041] Combination Figure 1 , Figure 7 and Figure 8 As shown, the bottom of the support base 43 is fixedly connected to the connecting base 42 by screws. The top end face of the support base 43 is set as an arc-shaped groove structure, and two corresponding brush plates 45 are fixedly connected to the inner wall of the support base 43.

[0042] In this embodiment, the stability of the support base 43 can be maintained by fixing the bottom of the support base 43 to the connecting base 42, and the brush plate 45 is fixedly installed on the inner wall of the support base 43, which makes it easy to install and replace the brush plate 45.

[0043] Combination Figure 7 , Figure 8 As shown, the support base 43 is fixedly connected to the front and rear ends of the support plate 46, and two guide wheels 47 are connected inside the support plate 46 for transmission.

[0044] In this embodiment, by fixing a support plate 46 to both ends of the support base 43, it is easy to maintain the connection stability of the support plate 46. At the same time, two guide wheels 47 are connected inside the support plate 46 to maintain the stable rotation of the guide wheels 47.

[0045] Combination Figure 7 , Figure 8 As shown, the brush plate 45 is attached to the bottom of the extrusion screw 23 under the telescopic movement of the telescopic rod 41, and is stably supported by the guide wheel 47.

[0046] In this embodiment, by stably supporting the guide wheel 47 at the bottom of the extrusion screw 23, not only can the extrusion screw 23 be stably supported, but the extrusion screw 23 can also be rotated under the drive of the screw speed changer 21.

[0047] The working principle of this utility model is as follows:

[0048] In use, this invention firstly installs a drive shaft 237 of appropriate size in the mounting groove 2331 at one end of the extrusion screw 23, and then connects the drive shaft 237 to the screw gearbox 21. The screw gearbox 21 then drives the extrusion screw 23 to rotate. The other end of the extrusion screw 23 is then embedded inside the extrusion equipment 3, allowing the plastic raw material to be placed and processed through the feed funnel 22. When the plastic raw material enters the extrusion equipment 3, the rotation of the extrusion screw 23 extrudes and grinds the plastic raw material. At the same time, several threaded teeth 234 are evenly distributed on the outer wall surfaces of the first screw section 231, the second screw section 232, and the third screw section 233, and notches 2341 are correspondingly opened on both sides of the threaded teeth 234. This not only ensures the normal movement of the raw material, but also ensures that the raw material is extruded and mixed multiple times in each screw section. Furthermore, a first grinding block 235 and a second grinding block 236 are fixedly installed on the extrusion screw 23, which further improves the processing quality of the product.

[0049] When the extrusion screw 23 needs to be removed for cleaning, the screw speed changer 21 is moved to pull out the screw 23 and drive the telescopic rod 41 to move up and down. The support base 43 can then stably support the bottom of the extrusion screw 23. A brush plate 45 is fixedly installed on the inner wall of the support base 43. This not only provides stable support for the extrusion screw 23, but also allows the screw 23 to rotate under the rotation of the screw speed changer 21, making it easier for operators to perform further cleaning and ensuring greater safety.

[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0051] Although this document frequently uses terms such as 1. extruder body; 2. drive unit; 21. screw gearbox; 22. feed funnel; 23. extrusion screw; 231. first screw section; 2311. support pin; 232. second screw section; 233. third screw section; 2331. mounting groove; 2332. mounting hole; 234. thread tooth; 2341. notch; 235. No. 1 grinding block; 236. No. 2 grinding block; 237. drive shaft; 3. extrusion equipment; 4. support mechanism; 41. telescopic rod; 42. connecting seat; 43. support seat; 44. connecting hole; 45. brush plate; 46. support plate; 47. guide wheel; 5. processing table, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A high-efficiency extruder screw, comprising an extruder body (1), characterized in that, The extruder body (1) consists of a drive unit (2), an extrusion device (3), and a support mechanism (4). The drive unit (2) consists of a screw gearbox (21), a feed hopper (22), and an extrusion screw (23). The extrusion device (3) is fixedly installed on a processing table (5). The support mechanism (4) is fixedly installed on one side of the processing table (5) and below the extrusion device (3). The support mechanism (4) consists of a telescopic rod (41), a connecting seat (42), and a support seat (43). The bottom of the connecting seat (42) is fixedly installed on the top of the telescopic rod (41), and the top of the connecting seat (42) is fixedly connected to the support seat (43). One end of the extrusion screw (23) is placed inside the extrusion device (3), and the other end is connected to the screw gearbox (21).

2. The high-efficiency extruder screw according to claim 1, characterized in that, The extrusion screw (23) is divided into three parts: a first screw section (231), a second screw section (232), and a third screw section (233). A number of threaded teeth (234) are evenly distributed on the outer wall surfaces of the first screw section (231), the second screw section (232), and the third screw section (233).

3. The high-efficiency extruder screw according to claim 2, characterized in that, One end of the first screw segment (231) is fixedly connected to a support pin (2311), and the other end of the first screw segment (231) is fixedly connected to a second screw segment (232). A grinding block (235) is provided at the connection between the first screw segment (231) and the second screw segment (232).

4. The high-efficiency extruder screw according to claim 3, characterized in that, The other end of the second screw segment (232) is fixedly connected to a third screw segment (233), and a second grinding block (236) is provided at the connection between the second screw segment (232) and the third screw segment (233), wherein the grinding teeth of the first grinding block (235) are finer than those of the second grinding block (236).

5. The high-efficiency extruder screw according to claim 4, characterized in that, The third screw section (233) is provided with a mounting groove (2331) at the other end. The mounting groove (2331) is provided with a plurality of mounting holes (2332) evenly arranged inside. The mounting groove (2331) is fixedly connected to a drive shaft (237) by bolts. The other end of the drive shaft (237) is connected to the screw gearbox (21).

6. The high-efficiency extruder screw according to claim 5, characterized in that, The outer wall surfaces of the threaded teeth (234) in the first screw section (231), the second screw section (232), and the third screw section (233) are fitted and connected to the interior of the extrusion equipment (3). Corresponding notches (2341) are evenly provided on both sides of the threaded teeth (234) in the middle sections of the first screw section (231), the second screw section (232), and the third screw section (233).

7. The high-efficiency extruder screw according to claim 6, characterized in that, The bottom of the telescopic rod (41) is fixedly installed on the lower side of the processing table (5) by screws, and the other end of the telescopic rod (41) is fixedly connected to the bottom of the connecting seat (42), and connecting holes (44) are provided on both sides of the connecting seat (42).

8. The high-efficiency extruder screw according to claim 7, characterized in that, The bottom of the support base (43) is fixedly connected to the connecting base (42) by screws. The top end face of the support base (43) is set as an arc-shaped groove structure, and two corresponding brush plates (45) are fixedly connected to the inner wall of the support base (43).

9. The high-efficiency extruder screw according to claim 8, characterized in that, The support base (43) is fixedly connected to a support plate (46) at both the front and rear ends, and two guide wheels (47) are connected inside the support plate (46) for transmission.

10. The high-efficiency extruder screw according to claim 9, characterized in that, The brush plate (45) is attached to the bottom of the extrusion screw (23) under the telescopic movement of the telescopic rod (41) and is stably supported by the guide wheel (47).

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