CN214983053U - Reducing screw rod thread insert subassembly - Google Patents
Reducing screw rod thread insert subassembly Download PDFInfo
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- CN214983053U CN214983053U CN202120221287.6U CN202120221287U CN214983053U CN 214983053 U CN214983053 U CN 214983053U CN 202120221287 U CN202120221287 U CN 202120221287U CN 214983053 U CN214983053 U CN 214983053U
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- reducing
- screw rod
- screw
- reducing screw
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Abstract
The utility model discloses a reducing screw rod swivel nut subassembly, set up the reducing screw rod in the reducing screw rod including reducing swivel nut and rotation, set up the feed inlet on the reducing screw rod, its screw rod external diameter that is close to the feed inlet of reducing screw rod is greater than its screw rod external diameter of keeping away from the feed inlet of reducing screw rod. The utility model discloses a material volume is eaten in the setting of reducing screw rod cooperation reducing swivel nut to increase for the material compresses gradually, makes the material closely knit, is full of the screw rod, makes the material mix more fully.
Description
Technical Field
The utility model relates to a reducing screw rod swivel nut subassembly.
Background
In the plastic extrusion molding equipment, the plastic extruder is generally called a main machine, and the subsequent equipment matched with the plastic extruder is called an auxiliary machine. After the development of the plastic extruder for more than 100 years, multiple types of double screws, multiple screws and even no screws and the like are derived from the original single screw. The plastic extruder (main machine) can be matched with various plastic forming auxiliary machines for pipe material, film, bar material, monofilament, flat filament, packing belt, extruding net, plate (sheet) material, profiled bar, granulating and cable covering, etc. to form various plastic extrusion forming production lines to produce various plastic products. Therefore, the plastic extrusion molding machine is one of the machines widely used in the plastic processing industry at present or in the future. The screw is generally divided into: 5 sections of a conveying section, a melting section, a mixing section, an exhaust section and a homogenizing section. The conveying section is used for conveying materials and preventing materials from overflowing. The melting section leads the materials to be fully melted and homogenized through heat transfer and friction shearing. The size of the material components is further refined and uniform by the mixing section to form an ideal structure, and the material has the mixing function of distributivity and dispersibility. The exhaust section is used for discharging impurities such as water vapor and low molecular weight substances. The homogenizing (metering) section is used for conveying and pressurizing, a certain pressure is established, materials at the die opening have a certain density, and meanwhile, the materials are further mixed, and finally, the purpose of smooth extrusion and granulation is achieved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a reducing screw rod swivel nut subassembly, adopt the setting of reducing screw rod cooperation reducing swivel nut, increase the material volume of eating for the material compresses gradually, makes the material closely knit, is full of the screw rod, makes the material mix more abundant.
In order to achieve the above object, the technical scheme of the utility model is to design a reducing screw rod swivel nut subassembly, set up the reducing screw rod in the reducing screw nut including reducing swivel nut and rotation, set up the feed inlet on the reducing screw nut, its screw rod external diameter that is close to the feed inlet of reducing screw rod is greater than its screw rod external diameter of keeping away from the feed inlet of reducing screw rod. The reducing screw rod is matched with the reducing screw sleeve to increase the material consumption, so that the material is gradually compressed, the material is compact and is full of the screw rod, and the material is more fully mixed. Several kinds of powder are added into the feed inlet according to the proportion at the same time, and the gradual compression of the material is realized by the reducing screw.
The screw at least comprises a conveying section, a melting section, a mixing section and a homogenizing section, wherein the conveying section is positioned right below a feed inlet, the homogenizing section is farthest away from the feed inlet along the conveying and feeding direction, and the diameter of the screw of the homogenizing section is smaller than that of the screw of the conveying section; the diameter of the screw sleeve at the conveying section is larger than that at the homogenizing section.
The further technical scheme is that the reducing screw between the conveying section and the homogenizing section is a tapered screw section with the screw diameter gradually reduced along the conveying and feeding direction, and the screw sleeve on the position of the tapered screw section is also a tapered screw sleeve section with the screw sleeve diameter gradually reduced along the conveying and feeding direction.
The utility model has the advantages and the beneficial effects that: the reducing screw rod is matched with the reducing screw sleeve to increase the material consumption, so that the material is gradually compressed, the material is compact and is full of the screw rod, and the material is more fully mixed.
Drawings
Fig. 1 is a schematic view of a reducing screw barrel assembly of the present invention;
fig. 2 is an enlarged schematic view of a middle section of the reducer screw of fig. 1.
In the figure: 1. a variable-diameter thread sleeve; 2. a variable diameter screw; 3. a feed inlet; 4. a conveying section; 5. a homogenization section; 6. a tapered screw section; 7. a tapered screw sleeve section.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 2, the utility model relates to a reducing screw thread insert subassembly, including reducing thread insert 1 and rotate the reducing screw rod 2 that sets up in reducing thread insert 1, set up feed inlet 3 on the reducing thread insert 1, its screw rod external diameter that is close to feed inlet 3 of reducing screw rod 2 is greater than the screw rod external diameter that feed inlet 3 was kept away from to reducing screw rod 2. The screw at least comprises a conveying section 4, a melting section, a mixing section and a homogenizing section 5, wherein the conveying section 4 is positioned under the feed port 3, the homogenizing section 5 is farthest away from the feed port 3 along the conveying and feeding direction, and the diameter of the screw of the homogenizing section 5 is smaller than that of the screw of the conveying section 4; the diameter of the screw sleeve at the conveying section 4 is larger than that of the screw sleeve at the homogenizing section 5. The reducing screw 2 between the conveying section 4 and the homogenizing section 5 is a tapered screw section 6 with the screw diameter gradually reduced along the conveying and feeding direction, and the screw sleeve at the position of the tapered screw section 6 is also a tapered screw sleeve section 7 with the screw sleeve diameter gradually reduced along the conveying and feeding direction.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The reducing screw barrel assembly is characterized by comprising a reducing screw barrel and a reducing screw rotatably arranged in the reducing screw barrel, wherein a feed port is formed in the reducing screw barrel, and the outer diameter of the reducing screw close to the feed port is larger than that of the reducing screw far away from the feed port.
2. The variable diameter screw barrel assembly according to claim 1, wherein the screw comprises at least a conveying section, a melting section, a mixing section and a homogenizing section, the conveying section is positioned right below the feed port, the homogenizing section is farthest away from the feed port along the conveying and feeding direction, and the screw diameter of the homogenizing section is smaller than that of the conveying section; the diameter of the screw sleeve at the conveying section is larger than that at the homogenizing section.
3. The reducing screw barrel assembly according to claim 2, wherein the reducing screw between the conveying section and the homogenizing section is a reducing screw section in which the screw diameter is gradually reduced along the conveying and feeding direction, and the barrel at the position of the reducing screw section is also a reducing screw section in which the screw diameter is gradually reduced along the conveying and feeding direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221287.6U CN214983053U (en) | 2021-01-27 | 2021-01-27 | Reducing screw rod thread insert subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221287.6U CN214983053U (en) | 2021-01-27 | 2021-01-27 | Reducing screw rod thread insert subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214983053U true CN214983053U (en) | 2021-12-03 |
Family
ID=79144531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120221287.6U Active CN214983053U (en) | 2021-01-27 | 2021-01-27 | Reducing screw rod thread insert subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214983053U (en) |
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2021
- 2021-01-27 CN CN202120221287.6U patent/CN214983053U/en active Active
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