Solid solution separation type screw

Abstract

The utility model discloses a solid solution separation type screw which comprises a screw body, the screw body comprises a homogenizing section, a melting section and a feeding section, and helical teeth are respectively distributed on the homogenizing section, the melting section and the feeding section. The screw rod has the beneficial effects that the lengths of the homogenizing section, the melting section and the feeding section arranged on the screw rod body are reasonable, so that the spiral teeth are reasonably distributed, the structures of the head section and the tail section are reasonably arranged, the screw rod body is conveniently matched and mounted on an injection molding machine, and the multi-layer covering structure of the screw rod body enhances the structural strength, increases the firmness, and is reasonable in overall size and firm in structure; and replacement and use are convenient.

Description

Technical Field

[0001] This utility model relates to screws, specifically to a solution-separation type screw. Background Technology

[0002] Due to varying processing parameters, solution-separated screws exhibit diverse designs, leading to increased machining difficulty and reduced efficiency. Existing solution-separated screws suffer from unreasonable structural distribution, tooth spacing, and shape design, which can lower working efficiency and compromise overall internal structural strength and robustness. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To overcome the shortcomings of existing technologies, a solid solution separation type screw is proposed.

[0005] (II) Technical Solution

[0006] This utility model is achieved through the following technical solution: This utility model proposes a solid solution separation type screw, including a screw body, the screw body including a homogenization section, a melting section, and a feeding section, the homogenization section, the melting section, and the feeding section are respectively arranged with helical teeth, characterized in that: the helical teeth arranged in the homogenization section and the feeding section are set at the same depth, the helical teeth arranged in the melting section are set at a gradual depth, the feeding section is provided with a head section at the front end, the homogenization section is provided with a tail section, the head section is provided with a connecting section and a head end provided at the front end of the connecting section, the connecting section is arranged with helical patterns on its outer periphery, the tail section includes a connecting part that is integrally connected with the homogenization section and an integral rod provided at the rear end of the connecting part, the outer wall of the connecting part is arranged with oblique patterns, the outer wall of the integral rod is uniformly arranged with rhomboid protrusions, and the rear end of the integral rod is provided with a tapered section; the screw body includes a multi-layer covering structure, the multi-layer covering structure including a base layer, a nitrided layer, and an electroplated layer.

[0007] Furthermore, the diameter of the screw body cross-section is 50mm.

[0008] Furthermore, the length of the feeding section is 620mm.

[0009] Furthermore, the melting section includes a gradient initiation section and a gradient main section, with the gradient initiation section having a length of 326 mm and the gradient main section having a length of 580 mm.

[0010] Furthermore, the length of the homogenization section is 332 mm.

[0011] Furthermore, the distance between the spiral teeth arranged in the homogenization section and the feeding section is 70mm.

[0012] Furthermore, the length of the connecting part is 180mm, and the length of the integral rod is 240mm.

[0013] Furthermore, the length of the connecting segment is 90mm, and the spiral pattern is arranged at the rear end of the connecting segment.

[0014] Furthermore, the base layer is made of nitrided steel, chrome-plated steel, high-carbon steel, stainless steel, bialloy steel, or powder metallurgy steel.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model has the following advantages: the homogenization section, melting section and feeding section of the screw body are reasonably sized and have a reasonable distribution between the spiral teeth. The head section and tail section are reasonably designed and are easy to install on the injection molding machine. The multi-layer covering structure of the screw body strengthens the structure and increases its firmness. The overall size is reasonable, the structure is firm, and it is easy to replace and use. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the multi-layer structure of this utility model;

[0019] The reference numerals in the attached drawings are explained as follows: screw body 1, homogenization section 11, melting section 12, gradient initiation section 121, gradient main section 122, feeding section 13, spiral teeth 14, head section 2, connecting section 21, head end 22, tail section 3, connecting part 31, integral rod 32, diamond protrusion 33, conical section 34, multi-layer covering structure 4, base layer 41, nitriding layer 42, electroplating layer 43. Detailed Implementation Example

[0020] like Figure 1 As shown in the figure, this embodiment provides a solid solution separation type screw, including a screw body 1. The screw body 1 includes a homogenization section 11, a melting section 12, and a feeding section 13. The homogenization section 11, the melting section 12, and the feeding section 13 are respectively arranged with helical teeth 14. The homogenization section 11, the melting section 12, and the feeding section 13 are arranged on the screw body 1 from left to right.

[0021] Existing solid solution separation screws suffer from unreasonable structural distribution, spacing between helical teeth, and shape design, which easily reduces screw efficiency. This application adopts a reasonable length setting for the homogenization section, melting section, and feeding section, and the spacing and shape design between the helical teeth arranged in the homogenization section, melting section, and feeding section are reasonable.

[0022] The existing solution-bonded screws suffer from insufficient overall structural strength and robustness. This application employs a multi-layered covering structure, which not only enhances the structural robustness of the screw but also increases its service life.

[0023] The difference between this application and the existing structure is that the diameter of the cross-section of the screw body 1 is 50mm.

[0024] The helical teeth 14 arranged in the homogenization section 11 are all at the same depth, and the length of the homogenization section 11 is 332 mm. The distance between the helical teeth 14 arranged in the homogenization section 11 is 70 mm. The helical teeth 14 arranged in the melting section 12 are arranged in a gradient pattern. The melting section 12 includes a gradient initiation section 121 and a gradient main section 122. The length of the gradient initiation section 121 is 580 mm, and the length of the gradient main section 122 is 326 mm. The narrower the melting range of the melting section, the shorter the melting section is used for mixing, compression, and pressurized degassing of plastics. The raw material in this section has been almost completely melted, but it is not necessarily uniformly mixed. For amorphous plastics, the length of the melting section should be longer; otherwise, the volume of the screw channel will decrease too quickly, and the slow reduction of the material volume will cause excessive shearing, resulting in material degradation or even blockage. The helical teeth 14 arranged in the feeding section 13 are all at the same depth, and the length of the feeding section 13 is 620 mm. The distance between the helical teeth 14 arranged in the feeding section 13 is 70 mm. The feeding section is responsible for conveying and preheating the plastic, ensuring that melting begins at the end of the feeding section and preheating to the melting point. For materials with high solid-state specific heat capacity, high melting point, and slow heating, more heat is required to reach the melting point, so the feeding section 13 should be long. The feeding section 13 has a head section 2 at its front and a tail section 3 at its rear end of the homogenization section 11. The head section 2 has a connecting section 21 and a head end portion 22 at the front end of the connecting section 21. Spiral patterns are arranged on the outer periphery of the connecting section 21. The tail section 3 includes a connecting part 31 integrally connected to the homogenization section 11 and an integral rod 32 at the rear end of the connecting part 31. The outer wall of the connecting part 31 has diagonal patterns, and the outer wall of the integral rod 32 has uniformly arranged diamond-shaped protrusions 33. A tapered section 34 is located at the rear end of the integral rod 32. The length of the connecting part 31 is 240 mm, and the length of the integral rod 32 is 180 mm. The length of the connecting section 21 is 90 mm, and the spiral patterns are located at the rear end of the connecting section 21.

[0025] Furthermore, such as Figure 2As shown, this application improves the structural strength of existing solution-bonded screws. The screw body 1 in this application includes a multi-layered covering structure 4, which comprises a base layer 41, a nitrided layer 42, and an electroplated layer 43. The base layer 41 is made of nitrided steel, chrome-plated steel, high-carbon steel, stainless steel, bialloy steel, or powder metallurgy steel. The material affects the screw's wear, corrosion, strength, and durability; suitable steels include nitrided steel, chrome-plated steel, high-carbon steel, stainless steel, bialloy steel, and powder metallurgy steel. It offers wear resistance and a long service life; nitriding enhances both service life and wear resistance. The nitriding depth is 0.4-0.8 mm, and the electroplated layer 43 is chrome-plated with a thickness of 0.5 mm.

[0026] Working principle: The solution-separation type screw in this application is installed in the injection molding machine through a head and tail connection. The difference between solution-separation type screws lies in the different settings of the homogenization section, melting section, feeding length, and helical tooth distribution. Specifically, in the melting section, there is a helical tooth that acts as a barrier, separating the solid plastic from the molten plastic. The outer diameter of the helical tooth is small, allowing the molten material to pass over the helical tooth and enter the molten region. The solution-separation region of the helical tooth narrows from wide to narrow. The melting process separates the solid and molten phases, effectively avoiding fluctuations caused by solid breakage. Some incompletely melted small particles, when crossing the gap between the helical tooth and the cylinder, are subjected to high shear and melt, improving the melting rate. The increased number of helical teeth increases the conduction area between the material and the screw, thereby increasing the melting rate. The improved melting rate allows for an increase in screw speed, thus increasing extrusion production while ensuring the quality of extruded material. This application features a reasonable multi-layered covering structure, high quality, long service life, and easy installation.

[0027] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A solid solution separation screw comprising a screw body, the screw body comprising a homogenizing section, a melting section, a feeding section, the homogenizing section, the melting section, the feeding section respectively arranged with helical teeth, characterized in that: The helical teeth between the homogenizing section and the feeding section are arranged with equal depth, the helical teeth between the melting section are arranged with gradual change, the front section of the feeding section is provided with a head section, the tail end of the homogenizing section is arranged with a tail section, the head section is provided with a connecting section and a head end arranged at the front end of the connecting section, a helical thread is arranged on the outer periphery of the connecting section, the tail section includes a connecting part which is integrated with the homogenizing section and an integrated rod arranged at the rear end of the connecting part, a diagonal thread is arranged on the outer wall of the connecting part, the outer wall of the integrated rod is uniformly arranged with diamond-shaped protrusions, and a tapered section is arranged at the rear end of the integrated rod; the screw body includes a multi-layer covering structure, and the multi-layer covering structure includes a base layer, a nitriding layer and an electroplating layer.

2. The solid solution separation type screw according to claim 1, characterized by: The cross-sectional diameter of the screw body is 50mm.

3. The solid solution separation type screw according to claim 1, characterized by: The length of the feeding section is 620mm.

4. The solid solution separation type screw according to claim 1, characterized by: The melting section includes a gradual change starting section and a gradual change main section, the length of the gradual change starting section is 326mm, and the length of the gradual change main section is 580mm.

5. The solution separation type screw according to claim 1, characterized by: The length of the homogenizing section is 332mm.

6. The solution separation type screw according to claim 1, wherein: The distance between the helical teeth arranged in the homogenizing section and the feeding section is 70mm.

7. The solution separation type screw according to claim 1, characterized by: The length of the connecting part is 240mm, and the length of the integrated rod is 180mm.

8. The solution separation type screw according to claim 1, characterized by: The length of the connecting section is 90mm, and the helical thread is arranged at the rear end position of the connecting section.

9. The solution separation type screw according to claim 1, characterized by: The material of the base layer is nitriding steel, or chromium-plated steel, or high-carbon steel, or stainless steel, or double alloy, or powder metallurgy steel.

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