Low-temperature resistant, high-strength pallet-specific screw and barrel assembly

Abstract

This utility model relates to the technical field of screw barrel assemblies, specifically a low-temperature resistant, high-strength pallet-specific screw barrel assembly. It includes a heating box, with a feeding assembly and a material feeding assembly at each end. Support blocks are located at the four corners of the bottom of the heating box. A drive motor is fixed to one end of the feeding assembly. This utility model achieves axial positioning by inserting limiting blocks at one end of the first and third screws into limiting holes at both ends of the second screw. The first, third, and second screws are fixedly connected by the second screw. The first, third, and second screws can be disassembled through the second screw passing through one end of the first and third screws, facilitating the replacement of individually damaged components and reducing processing costs.

Description

Technical Field

[0001] This utility model relates to the technical field of screw barrel assemblies, specifically to a low-temperature resistant, high-strength screw barrel assembly for pallets. Background Technology

[0002] Pallet-specific screw and barrel assemblies are core components of plastic extrusion molding equipment, specifically designed for the production of high-strength, high-durability plastic pallets. Their core function is to ensure uniform plasticization and stable extrusion of raw materials under high temperature and pressure, while meeting the pallet's specific requirements for mechanical strength, weather resistance, and creep resistance. Low-temperature resistant, high-strength pallet-specific screw and barrel assemblies are core components of extruders designed specifically for the production of plastic pallets used in cold chain logistics and low-temperature warehousing, and must meet stringent requirements for impact resistance and creep resistance in environments ranging from -30℃ to -40℃.

[0003] Existing pallet-specific screw and barrel assemblies typically use a rotating screw to move the plastic granules being processed through a conveying pipe, completing the processes of feeding, heating, mixing, and extrusion. Because different parts of a screw experience varying working environments and stress conditions, some areas are prone to severe wear over time, affecting subsequent conveying efficiency. This necessitates disassembling and replacing the entire screw, which is costly and wasteful due to the high manufacturing cost of a complete screw. Therefore, we offer a low-temperature resistant, high-strength pallet-specific screw and barrel assembly. Utility Model Content

[0004] The purpose of this invention is to provide a low-temperature resistant, high-strength pallet-specific screw barrel assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A low-temperature resistant, high-strength pallet-specific screw barrel assembly includes a heating box. The heating box has a feeding assembly and a feeding component at both ends, and a support block at each of the four corners of the bottom of the heating box. A drive motor is fixed to one end of the feeding assembly. The feeding assembly includes a first housing, a second housing, and a feeding bin. One end of the second housing is fixedly connected to one side of the heating box, and the first housing is fixedly connected to the second housing by a plurality of first bolts passing through both sides. The top of the first housing is provided with a feeding bin, and the inside of the feeding bin is provided with a feeding cavity. The feeding bin is connected to the inside of the first housing through the feeding cavity.

[0006] Preferably, the interior of the heating chamber is filled with heating tubes.

[0007] Preferably, the feeding assembly includes a third housing, a fourth housing, and a feeding bin. One end of the fourth housing is fixedly connected to one side of the heating box, and the third housing is fixedly connected to the fourth housing by a plurality of first bolts passing through both sides.

[0008] Preferably, the top of the third housing is provided with a feeding bin, and the feeding bin has a feeding cavity inside. The feeding bin is connected to the interior of the third housing through the feeding cavity inside.

[0009] Preferably, a drive motor is provided at one end of the feeding assembly, the drive motor is fixed at one end of the first housing and the second housing, and a first screw is fixedly connected to one end of the drive motor.

[0010] Preferably, a second screw is provided at the end of the first screw away from the drive motor, and a third screw is provided at the end of the second screw away from the first screw.

[0011] Preferably, the two ends of the second screw are respectively cross-fitted with the first screw and the third screw, and two limiting blocks are symmetrically arranged on both sides of the two ends of the second screw. The first screw and the third screw are respectively provided with limiting holes of adapted size at the positions of the two limiting blocks at the ends of the first screw and the third screw.

[0012] Preferably, two limiting holes are symmetrically opened at both ends of the second screw, and a limiting block adapted to its size is provided at the end of the first screw and the third screw near the second screw corresponding to the two limiting holes. The first screw and the third screw are fixedly connected to the second screw by the second bolt.

[0013] The working principle and beneficial effects of this utility model are as follows: This utility model facilitates the installation and disassembly of the first and third housings via the first bolt, allowing for easy opening of the device to disassemble and clean the internal components. The material to be added later can be fed into the feeding chamber through the feeding hopper, and then enters the interior of the third and fourth housings through the feeding chamber, facilitating mixing with the heated and melted plastic granules.

[0014] This invention achieves axial positioning by inserting limiting blocks at one end of the first and third screws into limiting holes at both ends of the second screw. The first, third, and second screws are fixedly connected by the second screw. The first, third, and second screws can be disassembled by the second screw passing through one end of the first and third screws, facilitating the replacement of individually damaged parts and reducing processing costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2This is a schematic diagram of the internal fan structure of this utility model; Figure 3 This is a schematic diagram of the screw structure of this utility model; Figure 4 This is a schematic diagram of the screw connection structure of this utility model; In the diagram: 1. Heating box; 2. Support base block; 3. First shell; 4. Second shell; 5. Feeding hopper; 6. Third shell; 7. Fourth shell; 8. Feeding hopper; 9. First bolt; 10. Drive motor; 11. First screw; 12. Second screw; 13. Third screw; 14. Limiting block; 15. Limiting hole; 16. Second bolt. Detailed Implementation

[0016] 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.

[0017] like Figure 1-4 As shown, the low-temperature resistant high-strength pallet-specific screw barrel assembly includes a heating box 1. The heating box 1 has a feeding component and a feeding component at both ends. Support blocks 2 are provided at the four corners of the bottom of the heating box 1. A drive motor 10 is fixed at one end of the feeding component.

[0018] like Figure 1 and Figure 2 As shown, the interior of heating box 1 is filled with heating tubes; The feeding assembly includes a first housing 3, a second housing 4, and a feeding bin 5. One end of the second housing 4 is fixedly connected to one side of the heating box 1. The first housing 3 is fixedly connected to the second housing 4 by a plurality of first bolts 9 passing through both sides. The top of the first housing 3 is provided with a feeding chamber 5, and the inside of the feeding chamber 5 is provided with a feeding cavity. The feeding chamber 5 is connected to the inside of the first housing 3 through the feeding cavity. The feeding assembly includes a third housing 6, a fourth housing 7, and a feeding bin 8. One end of the fourth housing 7 is fixedly connected to one side of the heating box 1. The third housing 6 is fixedly connected to the fourth housing 7 by a plurality of first bolts 9 passing through both sides. The top of the third housing 6 is provided with a feeding chamber 8, and the feeding chamber 8 has a feeding cavity inside. The feeding chamber 8 is connected to the interior of the third housing 6 through the feeding cavity inside.

[0019] In this embodiment, plastic granules are fed into the feeding chamber inside the feeding hopper 5. The plastic granules enter the interior of the first housing 3 and the second housing 4 through the feeding chamber. The heating tube inside the heating box 1 is driven by an external power supply to heat the plastic granules that have entered the first housing 3, the second housing 4 and the heating box 1. The first bolt 9 facilitates the installation and disassembly of the first housing 3 and the third housing 6, and makes it easy to open the device to disassemble and clean the internal components. The feeding hopper 8 can be used to feed the materials that need to be added later into the feeding chamber, and the materials enter the interior of the third housing 6 and the fourth housing 7 through the feeding chamber, so as to facilitate stirring and mixing with the heated and melted plastic granules.

[0020] like Figure 3 and Figure 4 As shown, a drive motor 10 is provided at one end of the feeding assembly. The drive motor 10 is fixed at one end of the first housing 3 and the second housing 4. A first screw 11 is fixedly connected to one end of the drive motor 10. A second screw 12 is provided at the end of the first screw 11 that is away from the drive motor 10, and a third screw 13 is provided at the end of the second screw 12 that is away from the first screw 11; The two ends of the second screw 12 are respectively cross-fitted with the first screw 11 and the third screw 13. Two limiting blocks 14 are symmetrically arranged on both sides of the two ends of the second screw 12. The first screw 11 and the third screw 13 are respectively provided with limiting holes 15 that are adapted to their size at the positions of the two limiting blocks 14 at the ends of the first screw 11 and the third screw 13 near the second screw 12. Two limiting holes 15 are symmetrically opened at both ends of the second screw 12. The first screw 11 and the third screw 13 are respectively provided with limiting blocks 14 of the same size at the positions corresponding to the two limiting holes 15 at the ends of the first screw 12. The first screw 11 and the third screw 13 are fixedly connected to the second screw 12 by the second bolt 16.

[0021] In this embodiment, limiting blocks 14 at one end of the first screw 11 and the third screw 13 are respectively inserted into the limiting holes 15 at both ends of the second screw 12 to achieve axial positioning. The first screw 11, the third screw 13, and the second screw 12 are fixedly connected by the second bolt 16. The drive motor 10 is turned on, and the drive motor 10 drives the first screw 11 to rotate. The rotation of the first screw 11 drives the second screw 12 to rotate simultaneously. The rotation of the second screw 12 drives the third screw 13 to rotate synchronously. The rotation of the first screw 11 drives the... Plastic granules fed into the hopper 5 are introduced into the heating box 1. The plastic granules are heated and melted by the heating tubes inside the heating box 1. The specially shaped protrusions on the outside of the second screw 12 can crush and knead the heated plastic granules. The heated and mixed plastic granules can be extruded to one end by rotating the third screw 13. The first screw 11, the third screw 13 and the second screw 12 can be disassembled by the second bolt 16 inserted at one end of the first screw 11 and the third screw 13, which facilitates the replacement of individually damaged parts and reduces processing costs.

[0022] In summary, the working principle is as follows: First, plastic granules are fed into the feeding chamber inside the feeding hopper 5. The granules then enter the first housing 3 and the second housing 4 through the feeding chamber. An external power supply drives the heating tube inside the heating box 1 to heat the plastic granules entering the first housing 3, the second housing 4, and the heating box 1. The first bolt 9 facilitates the installation and disassembly of the first housing 3 and the third housing 6, allowing for easy opening of the device to disassemble and clean the internal components. The feeding hopper 8 allows subsequent materials to be added into the feeding chamber, which then enters the third housing 6 and the fourth housing 7, facilitating mixing with the heated and melted plastic granules. Limiting blocks 14 at one end of the first screw 11 and the third screw 13 are inserted into the limiting holes 15 at both ends of the second screw 12 to provide axial positioning. The second bolt 16 secures the first screw 11 and the third screw 13 together. Screw 13 and screw 12 are fixedly connected. When the drive motor 10 is turned on, the drive motor 10 drives the first screw 11 to rotate. The rotation of the first screw 11 drives the second screw 12 to rotate simultaneously. The rotation of the second screw 12 drives the third screw 13 to rotate synchronously. The rotation of the first screw 11 can drive the plastic granules fed from the feed hopper 5 into the heating box 1. The plastic granules are heated and melted by the heating tube inside the heating box 1. The specially shaped protrusions on the outside of the second screw 12 can crush and knead the heated plastic granules. The rotation of the third screw 13 can extrude the heated and mixed plastic granules to one end. The first screw 11, the third screw 13 and the second screw 12 can be disassembled by the second bolt 16 passing through one end of the first screw 11 and the third screw 13, which facilitates the replacement of individually damaged parts and reduces processing costs.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature resistant, high-strength pallet-specific screw barrel assembly, including a heating chamber (1), characterized in that: The heating box (1) is provided with a feeding component and a feeding component at both ends, and a support block (2) is provided at each of the four corners of the bottom of the heating box (1). A drive motor (10) is fixed at one end of the feeding component. The feeding assembly includes a first housing (3), a second housing (4) and a feeding bin (5). One end of the second housing (4) is fixedly connected to one side of the heating box (1). The first housing (3) is fixedly connected to the second housing (4) by a plurality of first bolts (9) passing through both sides. The top of the first housing (3) is provided with a feeding bin (5), and the inside of the feeding bin (5) is provided with a feeding cavity. The feeding bin (5) is connected to the inside of the first housing (3) through the feeding cavity.

2. The low temperature resistant, high strength, tray specific screw barrel assembly of claim 1, wherein: The interior of the heating box (1) is filled with heating tubes.

3. The low temperature resistant, high strength, tray specific screw barrel assembly of claim 1, wherein: The feeding assembly includes a third housing (6), a fourth housing (7) and a feeding bin (8). One end of the fourth housing (7) is fixedly connected to one side of the heating box (1). The third housing (6) is fixedly connected to the fourth housing (7) by a plurality of first bolts (9) passing through both sides.

4. The low-temperature resistant, high-strength pallet-specific screw and barrel assembly according to claim 3, characterized in that: The top of the third housing (6) is provided with a feeding chamber (8), and the feeding chamber (8) has a feeding cavity inside. The feeding chamber (8) is connected to the interior of the third housing (6) through the feeding cavity inside.

5. The low temperature resistant, high strength, tray specific screw barrel assembly of claim 1, wherein: One end of the feeding assembly is provided with a drive motor (10), which is fixed at one end of the first housing (3) and the second housing (4). One end of the drive motor (10) is fixedly connected to a first screw (11).

6. The low-temperature resistant, high-strength pallet-specific screw and barrel assembly according to claim 5, characterized in that: A second screw (12) is provided at the end of the first screw (11) away from the drive motor (10), and a third screw (13) is provided at the end of the second screw (12) away from the first screw (11).

7. The low-temperature resistant, high-strength pallet-specific screw and barrel assembly according to claim 6, characterized in that: The two ends of the second screw (12) are respectively cross-fitted with the first screw (11) and the third screw (13). Two limiting blocks (14) are symmetrically arranged on both sides of the two ends of the second screw (12). The first screw (11) and the third screw (13) are respectively provided with limiting holes (15) that are adapted to their size at the positions of the two limiting blocks (14) at the ends of the first screw (12) and the third screw (13).

8. The low-temperature resistant, high-strength pallet-specific screw and barrel assembly according to claim 7, characterized in that: The second screw (12) has two symmetrically opened limiting holes (15) at both ends. The first screw (11) and the third screw (13) are provided with limiting blocks (14) of the same size at the positions corresponding to the two limiting holes (15) near the second screw (12). The first screw (11) and the third screw (13) are fixedly connected to the second screw (12) by the second bolt (16).

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