Double-step type efficient master batch mixing extruder

Abstract

The utility model belongs to the field of plastic processing, particularly relates to a double-step type efficient master batch mixing extruder, and aims to solve the problems that although the final effect of the conventional double-step type extruder is improved, the structure of the conventional double-step type extruder is more complicated, and particularly, when the inside of the conventional double-step type extruder needs to be cleaned or parts need to be replaced in practice, the conventional double-step type extruder is inconvenient to use. In order to solve the problems that in the prior art, a large amount of time and energy are wasted for disassembly and separation, and the practicability is greatly reduced, the following scheme is provided: the device comprises a base, the top of the base is fixedly provided with an upper shell and a lower shell through a bracket, the upper shell is located above the lower shell, one end of the upper shell is communicated with one end of the lower shell, and the other end of the upper shell is communicated with the lower shell; the screw rods are arranged in the upper machine shell and the lower machine shell, the material mixing effect is ensured, high efficiency is achieved, meanwhile, the structure is simpler, disassembly and separation needed in the later period can be rapidly and conveniently achieved, and therefore the corresponding time and labor amount are reduced in the aspects of component replacement, cleaning and the like.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, and in particular to a two-stage high-efficiency masterbatch mixing extruder. Background Technology

[0002] In the plastics processing industry, masterbatch mixing and extrusion are crucial steps in plastic product manufacturing. Traditional single-stage extruders struggle to meet the demands of high-quality plastic products. To improve mixing efficiency and extrusion productivity, two-stage extruders have emerged. Two-stage extruders, through a two-stage extrusion process, achieve better mixing and plasticization of materials, improving the quality of extruded products and production efficiency. Specifically, they consist of two extrusion units: the front extruder is primarily responsible for melting and uniformly mixing the plastic or raw materials, while the rear extruder further extrudes the mixed plastic or raw materials. This two-stage extrusion principle contributes to improved production efficiency.

[0003] However, while existing two-stage extruders improve the final result, their structure is more complex. In practice, it has been found that disassembly and separation require significant time and effort for internal cleaning or component replacement, greatly reducing their practicality. Therefore, there is a need for a mixing extruder that offers good mixing performance and high efficiency while maintaining a relatively simple structure and easy disassembly and separation. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where disassembly and separation require significant time and effort when cleaning or replacing internal components, greatly reducing their practicality. This invention proposes a two-stage high-efficiency masterbatch mixing extruder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A two-stage high-efficiency masterbatch mixing extruder includes a base, on the top of which an upper casing and a lower casing are fixedly mounted by a bracket, with the upper casing located above the lower casing. One end of the upper casing is connected to one end of the lower casing. Both the upper casing and the lower casing are equipped with screws inside. The top of the outer wall of the upper casing is fixedly connected to a feed hopper.

[0007] The mounting mechanism uses screws for mounting support. The mounting mechanism is located on the top of the base and includes a first support and a second support. The top of the base is provided with a mounting seat. The first support and the second support are both fixedly mounted on the top of the mounting seat. One end of each of the two screws rotatably passes through the first support. The second support has an inner ring that rotatably rotates inside. The two inner rings are respectively fitted onto the outer walls of the two screws, and one end of each inner ring is respectively attached to one end of the upper housing and the lower housing.

[0008] In one possible design, a motor is fixedly mounted on the top of the mounting base, and the output shaft of the motor is fixedly mounted to the end of one of the screws via a reducer. Synchronous pulleys are fixedly sleeved on the outer walls of both screws, and the same synchronous belt is driven sleeved on the outer walls of the two synchronous pulleys.

[0009] In one possible design, the mounting mechanism further includes multiple insert plates fixedly disposed on one side of the inner ring, one end of each insert plate being provided with a locking plate, and multiple locking holes being provided on the outer walls of one end of both the upper and lower housings, with the insert plates and locking plates cooperating with adjacent locking holes.

[0010] In one possible design, rubber pads are provided at the ends of both the upper and lower housings near the inner ring.

[0011] In one possible design, the mounting mechanism further includes a side frame and a threaded rod rotatably disposed inside the side frame. The side frame is fixedly disposed on one side of the mounting base, and a rack is slidably disposed on one side of the side frame. The rack is threaded onto the outer wall of the threaded rod, and gears are fixedly disposed on the outer walls of the two inner rings, and both gears mesh with the rack.

[0012] In one possible design, a slot is fixedly provided at the bottom of the rack, and a rod is provided at the top of the base, with the slot and rod cooperating with each other.

[0013] In one possible design, the upper housing has multiple partitions inside, and heating elements are installed inside the partitions.

[0014] In this application, during actual use, resin base materials and other additives are added to the interior of the upper casing through a feed hopper. A drive motor, via a reducer, directly drives the screw inside the upper casing. Then, through a synchronous belt and pulley, the screw inside the lower casing rotates. The screw inside the upper casing first mixes the raw materials and then heats and melts them using a heating element. The mixture is then conveyed to the lower casing, where the screw further extrudes the mixed materials to form the desired shape. For internal cleaning of the extruder, the threaded rod can be rotated directly. The threaded rod drives the rack to move upward, which in turn drives the gear to rotate. The gear then drives the inner ring to rotate, which in turn drives the insert plate to rotate. This causes the insert plate at one end to enter the side of the locking hole, thereby releasing the fixation between the two inner rings and the upper and lower housings. As the rack moves upward, it also drives the bottom insert rod to move, causing the insert rod to disengage from the slot. This releases the fixation between the mounting base and the base, allowing the mounting base to move. The mounting base then moves the upper mounting base, support number one, and support number two, thereby causing the two screws to disengage from the interior of the upper and lower housings, achieving the effect of disassembly and separation.

[0015] In this utility model, the two-stage high-efficiency masterbatch mixing extruder can install the screw into the machine body through the installation mechanism, and can also install the drive together. When disassembly and cleaning are required, the fixing can be directly released and separated, thereby facilitating the corresponding operation.

[0016] In this utility model, the two-stage high-efficiency masterbatch mixing extruder, through its two-stage structure, can improve the uniformity of material mixing and plasticizing quality, enhance extrusion stability, and at the same time improve extrusion efficiency and product quality through screw and heating.

[0017] In this invention, not only is the mixing effect of materials ensured and high efficiency achieved during use, but its structure is also simpler. The disassembly and separation required later can be achieved quickly and conveniently, thereby reducing the time and labor involved in replacing parts and cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of a two-stage high-efficiency masterbatch mixing extruder proposed in this utility model;

[0019] Figure 2 This is a side view sectional view of a two-stage high-efficiency masterbatch mixing extruder proposed in this utility model.

[0020] Figure 3 This utility model Figure 2 Enlarged view of the structure of section A;

[0021] Figure 4 This is an exploded structural diagram of the inner ring and casing of a two-stage high-efficiency masterbatch mixing extruder proposed in this utility model.

[0022] Figure 5 This is a front view cross-sectional structural diagram of a two-stage high-efficiency masterbatch mixing extruder proposed in this utility model.

[0023] In the diagram: 1. Base; 2. Mounting seat; 3. Motor; 4. Feed hopper; 5. Upper housing; 6. Lower housing; 7. Screw; 8. Partition; 9. Synchronous belt; 10. Synchronous pulley; 11. Support No. 1; 12. Gear; 13. Support No. 2; 14. Inner ring; 15. Threaded rod; 16. Rack; 17. Slot; 18. Insert rod; 19. Side frame; 20. Insert plate; 21. Clamping plate; 22. Clamping hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Reference Figure 1-2 An extruder includes: a base 1, with an upper extruder housing 5 and a lower extruder housing 6 fixedly mounted on the top of the base 1 via a bracket. The upper extruder housing 5 is located above the lower extruder housing 6, and one end of the two is connected. Both the upper extruder housing 5 and the lower extruder housing 6 are equipped with screws 7, used for mixing and extruding materials respectively. A feed hopper 4 is fixedly connected to the top of the outer wall of the upper extruder housing 5 for adding raw materials.

[0027] Reference Figure 3 To facilitate the installation and support of the screws 7, the mounting mechanism is located on the top of the base 1, specifically including support 11 and support 13, both fixedly mounted on the top of the mounting base 2. One end of each screw 7 rotatably passes through support 11, while support 13 has an inner ring 14 rotatably mounted inside. The two inner rings 14 are respectively fitted onto the outer walls of the two screws 7, and one end of the inner rings 14 is respectively attached to one end of the upper extruder housing 5 and the lower extruder housing 6 to ensure the stable operation of the screws 7. The inner rings 14 and the housing form a complete machine body, with the main body of the screws 7 located inside it.

[0028] Reference Figure 2-3For the drive, a motor 3 is fixedly mounted on the top of the mounting base 2. The output shaft of the motor 3 is fixedly connected to the end of one of the screws 7 through a reducer, which is used to drive the screw 7 to rotate. Synchronous pulleys 10 are fixedly sleeved on the outer walls of both screws 7, and the same synchronous belt 9 is sleeved on the outer walls of the two synchronous pulleys 10 to achieve synchronous rotation of the two screws 7.

[0029] Specifically, resin base material and other additives are added to the interior of the upper housing 5 through the feed hopper 4. The drive motor 3 drives the screw 7 inside the upper housing 5 to rotate through the reducer. Then, through the transmission of the synchronous belt 9 and the synchronous pulley 10, the screw 7 inside the lower housing 6 is driven to rotate. The screw 7 inside the upper housing 5 first mixes the raw materials and heats and melts them through the set heating element. Then, it is conveyed to the interior of the lower housing 6. The screw 7 inside the lower housing 6 is responsible for further extruding the mixed raw materials to form the required shape.

[0030] This application can be used in the field of plastics processing, or in other fields applicable to this application.

[0031] Example 2

[0032] refer to Figure 4 Based on Example 1, an improvement is made to a two-stage high-efficiency masterbatch mixing extruder applied to the plastics processing field. To enhance the connection between the inner ring 14 and the upper extruder housing 5 and the lower extruder housing 6, as well as the fixation between the mounting base 2 and the base 1, the mounting mechanism further includes multiple insert plates 20 fixedly disposed on one side of the inner ring 14. One end of each insert plate 20 is provided with a retaining plate 21. Multiple retaining holes 22 are provided on the outer walls of one end of both the upper extruder housing 5 and the lower extruder housing 6. The insert plates 20 and retaining plates 21 can cooperate with adjacent retaining holes 22 to fix the position of the inner ring 14. After inserting the insert plate 20 into the retaining hole 22, it is rotated to connect and fix the housing and the inner ring 14 through the retaining plate 21 on the side.

[0033] To ensure airtightness, rubber gaskets are provided at the ends of the upper extruder housing 5 and the lower extruder housing 6 near the inner ring 14.

[0034] Reference Figure 5In addition, the mounting mechanism includes a side frame 19 and a threaded rod 15 rotatably disposed inside the side frame 19. The side frame 19 is fixedly disposed on one side of the mounting base 2, and a rack 16 is slidably disposed on one side of the side frame 19. The rack 16 is threaded onto the outer wall of the threaded rod 15. Gears 12 are fixedly disposed on the outer walls of the two inner rings 14, and both gears 12 mesh with the rack 16. By rotating the threaded rod 15, the rack 16 can be driven to move up and down, which in turn drives the inner rings 14 to rotate through the gears 12, realizing the connection between the inner rings 14 and the upper extruder housing 5 and the lower extruder housing 6. A slot 17 is fixedly disposed at the bottom of the rack 16, and an insertion rod 18 is opened at the top of the base 1. The slot 17 can cooperate with the insertion rod 18 to realize the connection between the mounting base 2 and the base 1.

[0035] Specifically, for internal cleaning of the extruder after disassembly, the threaded rod 15 can be rotated directly. The threaded rod 15 drives the rack 16 to move upward, which in turn drives the gear 12 to rotate. The gear 12 drives the inner ring 14 to rotate, which in turn drives the insert plate 20 to rotate. This causes the clamping plate 21 at one end of the insert plate 20 to enter the side of the clamping hole 22, thereby releasing the fixation between the two inner rings 14 and the upper housing 5 and the lower housing 6. When the rack 16 moves upward, it will drive the bottom insert rod 18 to move, causing the insert rod 18 to disengage from the slot 17, thereby releasing the fixation between the mounting base 2 and the base 1. At this time, the mounting base 2 can be moved. The mounting base 2 drives the upper mounting base 2, the first support 11, and the second support 13 to move, thereby causing the two screws 7 to disengage from the interior of the upper housing 5 and the lower housing 6, achieving the effect of disassembly and separation.

[0036] The rotation of the threaded rod 15 can be manually rotated by installing a handwheel or other components, or electrically controlled by installing a motor or other drive components.

[0037] Reference Figure 2 To improve the mixing effect, multiple partitions 8 are provided inside the upper extruder shell 5, and heating elements are installed inside the partitions 8 to heat the material, promoting mixing and extrusion. The heating elements can be heating wires or heating tubes, which convert electrical energy into heat energy through resistance heat generated when current passes through them. The heating elements transfer heat to the extruded raw material, softening and melting it.

[0038] However, as is well known to those skilled in the art, the working principles and wiring methods of the motor 3 and the heating element are commonplace and are all conventional methods or common knowledge. They will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A two-stage high-efficiency masterbatch mixing extruder, characterized in that, include: The base (1) has an upper housing (5) and a lower housing (6) fixedly mounted on its top via a bracket. The upper housing (5) is located above the lower housing (6). One end of the upper housing (5) is connected to one end of the lower housing (6). Both the upper housing (5) and the lower housing (6) are equipped with screws (7). The top of the outer wall of the upper housing (5) is fixedly connected to a feed hopper (4). The mounting mechanism is used to support the screws (7). The mounting mechanism is set on the top of the base (1). The mounting mechanism includes a first support (11) and a second support (13). The top of the base (1) is provided with a mounting seat (2). The first support (11) and the second support (13) are both fixedly set on the top of the mounting seat (2). One end of each of the two screws (7) rotatably passes through the first support (11). The second support (13) is rotatably provided with an inner ring (14). The two inner rings (14) are respectively sleeved on the outer walls of the two screws (7). One end of each inner ring (14) is respectively attached to one end of the upper housing (5) and the lower housing (6).

2. The two-stage high-efficiency masterbatch mixing extruder according to claim 1, characterized in that, A motor (3) is fixedly installed on the top of the mounting base (2). The output shaft of the motor (3) is fixedly installed to the end of one of the screws (7) through a reducer. Synchronous pulleys (10) are fixedly sleeved on the outer walls of both screws (7). The same synchronous belt (9) is driven sleeved on the outer walls of the two synchronous pulleys (10).

3. The two-stage high-efficiency masterbatch mixing extruder according to claim 2, characterized in that, The installation mechanism also includes multiple insert plates (20) fixedly disposed on one side of the inner ring (14). One end of the insert plate (20) is provided with a locking plate (21). Multiple locking holes (22) are opened on the outer wall of one end of the upper housing (5) and the lower housing (6). The insert plate (20) and the locking plate (21) cooperate with the adjacent locking holes (22).

4. The two-stage high-efficiency masterbatch mixing extruder according to claim 3, characterized in that, Both the upper housing (5) and the lower housing (6) are provided with rubber pads at the end near the inner ring (14).

5. A two-stage high-efficiency masterbatch mixing extruder according to claim 4, characterized in that, The mounting mechanism also includes a side frame (19) and a threaded rod (15) rotatably disposed inside the side frame (19). The side frame (19) is fixedly disposed on one side of the mounting base (2). A rack (16) is slidably disposed on one side of the side frame (19). The rack (16) is threadedly sleeved on the outer wall of the threaded rod (15). Gears (12) are fixedly sleeved on the outer walls of the two inner rings (14), and both gears (12) mesh with the rack (16).

6. A two-stage high-efficiency masterbatch mixing extruder according to claim 5, characterized in that, The bottom of the rack (16) is fixedly provided with a slot (17), and the top of the base (1) is provided with a plug (18), and the slot (17) and the plug (18) cooperate with each other.

7. The two-stage high-efficiency masterbatch mixing extruder according to claim 1, characterized in that, The upper housing (5) has multiple partitions (8) inside, and heating elements are provided inside the partitions (8).

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