Single-screw extruder with detachable structure

Abstract

The utility model discloses a single-screw extruder with a detachable structure, which comprises a rack, a screw rod, a screw rod and a screw rod, the screw rod is rotationally arranged in the rack, and a penetrating strip is mounted at one end of the screw rod; the transmission wheel is rotationally mounted on one side of the rack through a bearing; and the mounting device is mounted on the transmission wheel, and the mounting device is used for clamping and positioning the insertion strip. The arrangement mode that the screw rod is matched with the mounting device is utilized, and the mounting device is matched with the penetrating strip in a clamping mode, so that penetrating of the penetrating strip can be detached, the screw rod can be taken out of the rack, all parts of the screw rod are cleaned carefully, and materials left in a screw groove can be cleaned accurately. And the residual materials such as plastic and rubber can be thoroughly removed by using special tools such as a brush and a scraper, so that the problem of influence of residual impurities on the product quality can be conveniently reduced.

Description

Technical Field

[0001] This utility model relates to the field of extruders, and in particular to a single-screw extruder with a detachable structure. Background Technology

[0002] The core component of a single-screw extruder, the screw, rotates and advances throughout the extrusion process. Through its teeth and engagement with the barrel, it applies thrust to the plastic material column. Under the extrusion pressure of the screw, the plastic raw material gradually melts and propels forward. Simultaneously, the heating system heats the barrel and screw to a suitable temperature, ensuring the plastic raw material melts fully. The cooling system, when necessary, cools the barrel and screw, allowing the extruded plastic product to solidify rapidly and ultimately be extruded from the die in the desired shape.

[0003] In the prior art, such as patent application number 202122402801.9, entitled "A Single Screw Extruder with a Positioning Mechanism", it includes a frame, a feed tank fixedly connected to the right side of the top of the frame, a main shaft movably installed inside the frame, helical blades fixedly installed on the outer side of the main shaft, a motor fixedly installed at one end of the inner cavity of the transmission box, a reducer fixedly installed at one end of the output shaft of the motor, and one end of the reducer fixedly connected to one end of the main shaft.

[0004] In the aforementioned patent, because the helical blades and main shaft, which are equivalent to the screw, are fixedly connected to the reducer, the screw is difficult to disassemble. This leads to material residue easily remaining in the gap between the screw and the barrel, especially inside the screw groove. For example, when processing plastic materials containing additives, pigments, or high viscosity, these materials will adhere tightly to the screw surface. For some materials with poor thermal stability, if they are not thoroughly cleaned after processing, the residual material will decompose and carbonize during the next startup and heating process. This not only affects product quality, causing defects such as black spots and impurities in newly produced products, but also causes corrosion and wear on the surfaces of the screw and barrel. Utility Model Content

[0005] The purpose of this invention is to provide a single-screw extruder with a detachable structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a single-screw extruder with a detachable structure, comprising:

[0007] The frame is a hollow shell structure;

[0008] A screw, which is rotatably mounted inside the frame, has a through-bar installed at one end;

[0009] A drive wheel, which is rotatably mounted on one side of the frame via bearings;

[0010] The mounting device is mounted on the drive wheel and is used for snapping and positioning the insert strip.

[0011] Preferably, a first mounting plate is fixedly installed on one side of the frame, the transmission wheel is rotatably mounted on the first mounting plate, and a rotary motor is fixedly mounted on the first mounting plate by a bracket.

[0012] Preferably, the mounting device includes:

[0013] A rotating cylinder is fixedly mounted on a transmission wheel, and the rotating cylinder is inserted and sleeved with the end of the screw.

[0014] A detachable positioning mechanism is sleeved on the rotating cylinder and is used for positioning the insertion of the insert strip.

[0015] Preferably, the detachable positioning mechanism includes:

[0016] A sliding assembly, which is slidably sleeved on the outside of the rotating cylinder;

[0017] Interpenetrating positioning components, wherein multiple interpenetrating positioning components are radially interpenetrating with the rotating cylinder, and the multiple interpenetrating positioning components are arranged in a ring array;

[0018] A spring is movably sleeved on the outside of the rotating cylinder, and the spring is used to provide elastic support for the sliding assembly.

[0019] Preferably, the sliding component includes:

[0020] A sliding ring is slidably sleeved on the outside of the rotating cylinder, and a fixing ring is provided on the side of the sliding ring away from the spring, and the fixing ring is fixedly installed on the rotating cylinder;

[0021] Ear plates, a plurality of ear plates are mounted on the sliding ring facing the side of the insertion positioning component, and the plurality of ear plates are arranged in a ring array;

[0022] An interlocking slide shaft is mounted on the ear plate.

[0023] Preferably, the interlacing positioning component includes:

[0024] A sliding frame is radially slidably inserted into the rotating cylinder, and an inclined groove is provided on the sliding frame, with the inserted sliding shaft slidingly engaged with the inner cavity of the inclined groove;

[0025] The positioning block is fixedly installed at the end of the sliding ring, and the positioning block and the insert strip are engaged in an interlocking manner.

[0026] Preferably, a second mounting plate is movably mounted on the other side of the frame by bolts, and a fixed cylinder is mounted on the second mounting plate. The screw is rotatably connected to the fixed cylinder by a bearing.

[0027] The technical effects and advantages of this utility model are as follows:

[0028] This invention utilizes a screw and mounting device that work together. Through the snap-fit ​​connection between the mounting device and the insert strip, the insert strip can be disassembled, allowing the screw to be removed from the frame for thorough cleaning of all parts. For any material remaining in the screw groove, specialized tools such as brushes and scrapers can be used to completely remove residual plastic, rubber, and other materials. The detachable screw facilitates the cleaning of these residues, thereby reducing the impact of residual impurities on product quality. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0030] Figure 2 This is a front structural diagram of the present utility model.

[0031] Figure 3 This is a schematic diagram of the internal structure of the front of this utility model.

[0032] Figure 4 This is a front view of the installation device of this utility model.

[0033] Figure 5 This is a schematic diagram of the internal structure of the mounting device of this utility model from the front.

[0034] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0035] In the diagram: 1. Frame; 2. Screw; 21. Through strip; 3. Drive wheel; 4. Mounting device; 41. Rotating cylinder; 42. Detachable positioning mechanism; 421. Sliding assembly; 4211. Sliding ring; 4212. Ear plate; 4213. Through sliding shaft; 422. Through positioning assembly; 4221. Sliding frame; 4222. Positioning block; 423. Spring; 5. Fixed cylinder; 6. Rotary motor. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] This utility model provides, for example Figure 1-6 The single-screw extruder with a detachable structure shown includes: a frame 1, which is a hollow shell structure with hoppers installed diagonally at the top and bottom for easy material guidance; a screw 2, which is rotatably disposed inside the frame 1, with an insert strip 21 installed at one end; a drive wheel 3, which is rotatably mounted on one side of the frame 1 via bearings; and a mounting device 4, which is mounted on the drive wheel 3 and is used to engage and position the insert strip 21. Through the engagement between the mounting device 4 and the insert strip 21, the insert strip 21 can be disassembled, allowing the screw 2 to be removed from the frame 1 for thorough cleaning of all parts of the screw 2. For materials remaining in the screw groove, special tools such as brushes and scrapers can be used to thoroughly remove residual plastic, rubber, and other materials. The detachable screw 2 facilitates the cleaning of these residues.

[0038] Example 1

[0039] A first mounting plate is fixedly installed on one side of the frame 1. The transmission wheel 3 is rotatably mounted on the first mounting plate. A rotary motor 6 is fixedly mounted on the first mounting plate by a bracket. The output end of the rotary motor 6 is also equipped with a transmission wheel 3. A conveyor belt can be connected between the transmission wheel 3 connected to the rotary motor 6 and the transmission wheel 3 connected to the mounting device 4. Thus, the rotation of the rotary motor 6 can transmit power to the transmission wheel 3. Through the snap-fit ​​between the mounting device 4 and the insert 21, it is easy to drive the screw 2 to rotate synchronously.

[0040] The mounting device 4 includes: a rotating cylinder 41, which is fixedly mounted on the transmission wheel 3 and is sleeved with the end of the screw 2. The inner walls of the transmission wheel 3 and the rotating cylinder 41 are provided with strip grooves. The insert strip 21 is axially inserted into the inner cavity of the strip groove, which facilitates the radial positioning of the screw 2 relative to the mounting device 4; and a detachable positioning mechanism 42, which is sleeved on the rotating cylinder 41 and is used for positioning the insert strip 21.

[0041] The detachable positioning mechanism 42 includes: a sliding component 421, which is slidably sleeved on the outside of the rotating cylinder 41. The sliding component 421 facilitates the control of the radial movement of the insertion positioning component 422 relative to the screw 2, thereby locking and unlocking the insertion strip 21; multiple insertion positioning components 422 are radially inserted into the rotating cylinder 41 and arranged in a ring array. The cooperation between the insertion positioning components 422 and the insertion strip 21 facilitates the limiting of the axial position of the screw 2; and a spring 423, which is movably sleeved on the outside of the rotating cylinder 41 and provides elastic support for the sliding component 421, so that the sliding ring 4211 can remain in contact with the fixed ring, and the positioning block 4222 can be stably held in the state of being engaged with the insertion strip 21, thereby achieving stable assembly between the screw 2 and the mounting device 4.

[0042] The sliding assembly 421 includes: a sliding ring 4211, which is slidably sleeved on the outside of the rotating cylinder 41, and a fixing ring is provided on the side of the sliding ring 4211 away from the spring 423. The fixing ring is fixedly installed on the rotating cylinder 41. The fixing ring facilitates the limitation of the position of the sliding ring 4211. When the spring 423 provides elastic support to the sliding ring 4211, the sliding ring 4211 can remain in close contact with the fixing ring, thereby facilitating the engagement between the positioning block 4222 and the insert strip 21; ear plates 4212, multiple ear plates 4212 are installed on the sliding ring 4211 facing the insert positioning assembly 422, and the multiple ear plates 4212 are arranged in a ring array; and an insert sliding shaft 4213, which is installed on the ear plates 4212. The insertion positioning assembly 422 includes: a sliding frame 4221, which is radially slidably inserted into the rotating cylinder 41, and has an inclined groove on it. The inclined groove facilitates changing the direction of force, allowing the axial movement of the insertion sliding shaft 4213 to drive the radial movement of the sliding frame 4221. The insertion sliding shaft 4213 slides within the inner cavity of the inclined groove. A positioning block 4222 is fixedly installed at the end of the sliding ring 4211, and the positioning block 4222 is inserted into the insertion strip 21 in a snap-fit ​​manner. When it is necessary to disassemble the screw 2... During disassembly, by pushing the sliding ring 4211 toward the spring 423, the spring 423 is compressed and deformed, which in turn drives the ear plate 4212 to move axially synchronously. This causes the through-slide shaft 4213 to push the inner wall of the inclined groove, giving the sliding frame 4221 a radial thrust. This causes the sliding frame 4221 to drive the positioning block 4222 to slide away from the through strip 21, thus disengaging the positioning block 4222 from the through strip 21 and unlocking the screw 2, thereby disassembling the screw 2.

[0043] Example 2

[0044] Based on Embodiment 1, a second mounting plate is movably mounted on the other side of the frame 1 by bolts. A fixed cylinder 5 is mounted on the second mounting plate. The screw 2 is rotatably sleeved with the fixed cylinder 5 through a bearing. A key is provided at the other end of the screw 2. A keyway is provided in the bearing inside the fixed cylinder 5 to cooperate with it. Thus, the cooperation between the key and the keyway enables the rotatable sleeve connection between the screw 2 and the fixed cylinder 5. When it is necessary to disassemble the screw 2, the second mounting plate must first be disassembled. The fixed cylinder 5 is pulled laterally to disassemble the screw 2 from the fixed cylinder 5 so that the other end of the screw 2 can be disassembled first.

[0045] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A single-screw extruder with a detachable structure, characterized in that, include: The frame (1) is a hollow shell structure; Screw (2), the screw (2) is rotatably disposed inside the frame (1), and a through bar (21) is installed at one end of the screw (2). The transmission wheel (3) is rotatably mounted on one side of the frame (1) via a bearing; The mounting device (4) is mounted on the transmission wheel (3) and is used for snapping and positioning the insert strip (21).

2. The single-screw extruder with a detachable structure according to claim 1, characterized in that, A first mounting plate is fixedly installed on one side of the frame (1), and the transmission wheel (3) is rotatably mounted on the first mounting plate. A rotary motor (6) is fixedly mounted on the first mounting plate by a bracket.

3. The single-screw extruder with a detachable structure according to claim 1, characterized in that, The mounting device (4) includes: Rotating cylinder (41), the rotating cylinder (41) is fixedly installed on the transmission wheel (3), and the rotating cylinder (41) is inserted and sleeved with the end of the screw (2); A detachable positioning mechanism (42) is sleeved on the rotating cylinder (41) and is used for positioning the insertion strip (21).

4. The single-screw extruder with a detachable structure according to claim 3, characterized in that, The detachable positioning mechanism (42) includes: A sliding component (421) is slidably sleeved on the outside of the rotating cylinder (41); Interpenetrating positioning components (422), a plurality of the interpenetrating positioning components (422) are radially interpenetrating with the rotating cylinder (41), and the plurality of the interpenetrating positioning components (422) are arranged in a ring array; A spring (423) is movably sleeved on the outside of the rotating cylinder (41), and the spring (423) is used to provide elastic support for the sliding assembly (421).

5. The single-screw extruder with a detachable structure according to claim 4, characterized in that, The sliding component (421) includes: A sliding ring (4211) is slidably sleeved on the outside of the rotating cylinder (41), and a fixing ring is provided on the side of the sliding ring (4211) away from the spring (423), and the fixing ring is fixedly installed on the rotating cylinder (41). Ear plates (4212), a plurality of ear plates (4212) are mounted on the sliding ring (4211) on the side facing the insertion positioning assembly (422), and the plurality of ear plates (4212) are arranged in a ring array; An insert slide (4213) is mounted on an ear plate (4212).

6. The single-screw extruder with a detachable structure according to claim 5, characterized in that, The interlacing positioning component (422) includes: The sliding frame (4221) is radially slidably inserted into the rotating cylinder (41), and the sliding frame (4221) has an inclined groove. The inserted sliding shaft (4213) is slidably engaged with the inner cavity of the inclined groove. The positioning block (4222) is fixedly installed at the end of the sliding ring (4211), and the positioning block (4222) is interlocked with the inserted strip (21).

7. The single-screw extruder with a detachable structure according to claim 1, characterized in that, A second mounting plate is movably mounted on the other side of the frame (1) by bolts, and a fixed cylinder (5) is mounted on the second mounting plate. The screw (2) is rotatably connected to the fixed cylinder (5) by bearings.

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