CN218615346U - Wear-resisting screw rod assembly and screw rod - Google Patents
Wear-resisting screw rod assembly and screw rod Download PDFInfo
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- CN218615346U CN218615346U CN202123099267.5U CN202123099267U CN218615346U CN 218615346 U CN218615346 U CN 218615346U CN 202123099267 U CN202123099267 U CN 202123099267U CN 218615346 U CN218615346 U CN 218615346U
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Abstract
The utility model discloses a wear-resistant screw assembly, which comprises a sleeve member, wherein the middle part of the sleeve member is provided with a perforation, and the sleeve member is arranged to be sleeved on a rod-shaped object through the perforation; the outer convex part is arranged on the outer side surface of the sleeve part, and one end, far away from the sleeve part, of the outer convex part is formed with an alloy outer edge with high wear resistance through powder metallurgy. Furthermore, the utility model also provides a screw rod. The wear-resistant screw assembly comprises a sleeve, the sleeve is arranged to be sleeved on a rod-shaped object through a through hole to form a screw, only the damaged wear-resistant screw assembly can be replaced during maintenance, and cost is reduced; the evagination piece of this embodiment is formed with the alloy outer fringe through powder metallurgy process, and alloy outer fringe position is the most place of screw rod during operation friction, because the alloy outer fringe has high wear resistance, and wear resistance is stronger than evagination piece, can improve the holistic wear resistance of evagination piece, increase of service life through setting up the alloy outer fringe.
Description
Technical Field
The utility model relates to an extruder field of making, in particular to wear-resisting screw rod subassembly to and adopt this wear-resisting screw rod subassembly's screw rod.
Background
One of the biggest problems with plastic production extruders is that the male part on the conveyor screw has a short life and must be repaired and replaced, typically for two to three months. Particularly, the outer diameter edge of the outer convex part is most obvious, and the performance of the extruder is greatly reduced or even cannot work after the outer diameter is abraded by 3-5 mm. At this moment, the outer convex part needs to be replaced, however, the existing screw rod is of an integrated structure, and if the outer convex part is replaced, the whole screw rod needs to be replaced, so that the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a wear-resisting screw rod subassembly can improve wear resistance, increase of service life, reduction in production cost.
Furthermore, the utility model discloses still provide a screw rod, adopt wear-resisting screw rod subassembly, improve the whole wear resistance of screw rod.
According to the utility model discloses wear-resisting screw rod subassembly of the first aspect embodiment, include: the anti-rotation device comprises a sleeve, a first anti-rotation structure and a second anti-rotation structure, wherein a through hole is formed in the middle of the sleeve, the first anti-rotation structure is arranged in the through hole, the sleeve can be sleeved on a rod-shaped object through the through hole, and the first anti-rotation structure prevents the sleeve from rotating relative to the rod-shaped object; the outer convex part is arranged on the outer side surface of the sleeve, and one end, far away from the sleeve, of the outer convex part is formed with a wear-resistant alloy outer edge through powder metallurgy.
According to the utility model discloses wear-resisting screw rod subassembly, at least, following beneficial effect has: the wear-resistant screw assembly comprises a sleeve, the sleeve is arranged to be sleeved on a rod-shaped object through a through hole to form a screw, only the damaged wear-resistant screw assembly can be replaced during maintenance, and cost is reduced; the evagination piece of this embodiment is formed with the alloy outer fringe through powder metallurgy process, and alloy outer fringe position is the most place of screw rod during operation friction, because the alloy outer fringe has high wear resistance, and wear resistance is stronger than evagination piece, can improve the holistic wear resistance of evagination piece, increase of service life through setting up the alloy outer fringe.
According to the utility model discloses wear-resisting screw rod subassembly of the embodiment of first aspect, the external member with the evagination piece is integrative casting shaping. Furthermore, the sleeve and the outer convex part are generally cast by adopting iron or stainless steel materials, so that the production cost is reduced.
According to the utility model discloses wear-resisting screw rod subassembly of the embodiment of first aspect, the evagination piece is the helical tooth, the helical tooth is in the external surface of external member forms spiral helicine conveyer trough.
According to the utility model discloses wear-resisting screw rod subassembly of the first aspect embodiment, the helical tooth is trapezoidal thread. By adopting the trapezoidal thread, the meshing stability of the helical teeth can be improved, the compressive strength is high, and the centering performance is good.
According to the utility model discloses wear-resisting screw rod subassembly of first aspect embodiment, the evagination piece is a plurality of kneading block monolithic, and is adjacent kneading block monolithic staggers each other.
According to the embodiment of the first aspect of the present invention, the thickness of the outer edge of the alloy is 1-10mm.
According to the utility model discloses second aspect embodiment the screw rod, include: the outer surface of the mandrel is provided with a second anti-rotation structure; the wear-resistant screw rod component is provided with a plurality of wear-resistant screw rod components; the wear-resistant screw assembly is sleeved on the mandrel, and the first anti-rotation structure and the second anti-rotation structure are mutually matched.
According to the utility model discloses the screw rod of second aspect embodiment, following beneficial effect has at least: the screw rod of this embodiment adopts above-mentioned wear-resisting screw rod subassembly and dabber to constitute, has extremely high wear resistance, and the subassembly is changed conveniently, reduction production and maintenance cost.
According to the utility model discloses the screw rod of second aspect embodiment, first anti-rotation structure sets up to the internal spline, the internal spline sets up the perforation inner wall, second anti-rotation structure set up to with the external spline of internal spline looks adaptation, the external spline sets up the dabber surface. The wear-resistant screw assembly is prevented from rotating relative to the mandrel by splines while being fastened to the mandrel.
Furthermore, the two ends of the through hole are respectively provided with the spline, so that the connection stability of the external member and the mandrel can be improved. In addition, the spline can also be provided with a plurality of groups, and the plurality of groups of the spline are circumferentially arranged in the through hole. Through being provided with the multiunit spline, can improve joint strength, improve stability.
According to the utility model discloses the screw rod of second aspect embodiment, the dabber with be provided with corresponding straight flange on the perforation, the straight flange constitutes first anti-rotation structure with second anti-rotation structure.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a wear-resistant screw assembly according to some embodiments of the present invention;
fig. 2 is a schematic structural view of a wear-resistant screw assembly according to some embodiments of the present invention.
Description of reference numerals:
a kit 110; the male member 120; a perforation 130; a first anti-rotation structure 140; an alloy outer rim 150.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, an embodiment of the present invention provides a wear-resistant screw assembly, which includes a sleeve member 110 and an outer convex member 120 that are integrally cast. In the present embodiment, the male member 120 is a helical tooth, and the sleeve 110 and the helical tooth are preferably cast from stainless steel. In addition, in other embodiments, the sleeve 110 and the outer convex part 120 may be cast by iron or the like.
Specifically, in the present embodiment, the central portion of the sleeve 110 is provided with a through hole 130. The inner wall of the through hole 130 is provided with a first anti-rotation structure 140, and in this embodiment, the first anti-rotation structure 140 is provided as an internal spline. The sleeve 110 is fitted over a shaft such as a mandrel through the through hole 130. The helical teeth are arranged helically on the outer side of the sleeve 110. The end of the helical teeth remote from the sleeve 110 is formed by powder metallurgy with an alloy outer rim 150 having high wear resistance. The thickness of the alloy outer edge 150 is 1-10mm, and the thickness of the alloy outer edge 150 can be set according to actual use conditions, so that the product performance is ensured, and the production cost is reduced.
Referring to fig. 1, further, the helical teeth are trapezoidal threads. Through adopting trapezoidal thread, can improve the meshing stability of helical tooth, and compressive strength is high, and centering nature is good. Of course, the helical teeth may also be rectangular threads or zigzag threads, etc., and the present invention is not limited thereto.
Referring to fig. 2, an embodiment of the present invention provides another wear-resistant screw assembly, including a sleeve member 110 and an outer convex member 120 that are integrally cast. In this embodiment, the sleeve 110 also has perforations 130. In this embodiment, the male member 120 is a plurality of single kneading block pieces, and adjacent kneading block pieces are staggered from each other. An alloy outer rim 150 is provided at the end of the kneading block monolith remote from the sleeve 110, as shown in fig. 2.
The wear-resistant screw assembly of the embodiment comprises a sleeve 110, wherein the sleeve 110 is arranged to be sleeved on a rod-shaped object through a through hole 130 to form a screw, so that only the damaged wear-resistant screw assembly can be replaced during maintenance, and the cost is reduced; the outer convex part 120 of the embodiment is formed with the alloy outer edge 150 through a powder metallurgy process, the position of the alloy outer edge 150 is the most friction place of the screw rod during working, and the alloy outer edge 150 has high wear resistance and stronger wear resistance than the outer convex part 120, so that the overall wear resistance of the outer convex part 120 can be improved by arranging the alloy outer edge 150, and the service life is prolonged.
The utility model also provides a screw rod, including the dabber, the spindle cover is equipped with a plurality of wear-resisting screw rod subassemblies. Further, the outer surface of the mandrel is provided with a second anti-rotation structure, and the first anti-rotation structure 140 and the second anti-rotation structure are matched with each other. Taking the wear-resistant screw assembly in fig. 1 as an example, the first anti-rotation structure 140 is an internal spline disposed on the inner wall of the through hole 130, the second anti-rotation structure is an external spline adapted to the internal spline, and the external spline is disposed on the outer surface of the mandrel. Further, in some embodiments, internal splines are provided at both ends of the bore 130. By providing the inner spline at both ends of the through hole 130, the connection stability of the set 110 and the mandrel can be improved. Of course, the spline may be disposed in the middle of the through hole 130, but the manufacturing process is troublesome and the manufacturing cost is high. It is contemplated that the splines are provided in multiple sets with multiple sets of splines circumferentially disposed within the bore 130. Through being provided with the multiunit spline, can improve joint strength, improve stability. It should be noted that only one set of splines may be provided. Of course, the negative one rotation-proof structure and the second rotation-proof structure can also adopt other modes, and the utility model discloses do not limit this. As in other embodiments, the mandrel and the through hole 130 are provided with corresponding straight edges, and the first anti-rotation structure 140 and the second anti-rotation structure are formed by the matched straight edges. The screw rod of this embodiment adopts above-mentioned wear-resisting screw rod subassembly and dabber to constitute, has extremely high wear resistance, and the subassembly is changed conveniently, reduction production and maintenance cost.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. A wear-resistant screw assembly, comprising:
the anti-rotation device comprises a sleeve, a first anti-rotation structure and a second anti-rotation structure, wherein a through hole is formed in the middle of the sleeve, the first anti-rotation structure is arranged in the through hole, the sleeve can be sleeved on a rod-shaped object through the through hole, and the first anti-rotation structure prevents the sleeve from rotating relative to the rod-shaped object;
the outer convex part is arranged on the outer side surface of the sleeve, and one end, far away from the sleeve, of the outer convex part is formed with a wear-resistant alloy outer edge through powder metallurgy.
2. A wear-resistant screw assembly in accordance with claim 1, wherein: the external member and the external convex member are integrally cast and formed.
3. A wear-resistant screw assembly according to claim 1 or 2, wherein: the convex part is a spiral tooth.
4. A wear resistant screw assembly in accordance with claim 3 wherein: the helical teeth are trapezoidal threads.
5. A wear-resistant screw assembly according to claim 1 or 2, wherein: the outer convex pieces are a plurality of kneading block single pieces, and the adjacent kneading block single pieces are staggered with each other.
6. A wear resistant screw assembly in accordance with claim 1 wherein: the thickness of the outer edge of the alloy is 1-10mm.
7. A screw, comprising:
the outer surface of the mandrel is provided with a second anti-rotation structure;
a wear resistant screw assembly as claimed in any one of claims 1 to 6, provided in plurality; wherein the content of the first and second substances,
the wear-resistant screw rod assembly is sleeved on the mandrel, and the first anti-rotation structure and the second anti-rotation structure are mutually matched.
8. The screw of claim 7, wherein: the first anti-rotation structure is arranged to be an internal spline, the internal spline is arranged on the inner wall of the through hole, the second anti-rotation structure is arranged to be an external spline matched with the internal spline, and the external spline is arranged on the outer surface of the mandrel.
9. The screw of claim 7, wherein: the mandrel and the through hole are provided with corresponding straight edges, and the straight edges form the first anti-rotation structure and the second anti-rotation structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123099267.5U CN218615346U (en) | 2021-12-10 | 2021-12-10 | Wear-resisting screw rod assembly and screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123099267.5U CN218615346U (en) | 2021-12-10 | 2021-12-10 | Wear-resisting screw rod assembly and screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218615346U true CN218615346U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123099267.5U Active CN218615346U (en) | 2021-12-10 | 2021-12-10 | Wear-resisting screw rod assembly and screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218615346U (en) |
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2021
- 2021-12-10 CN CN202123099267.5U patent/CN218615346U/en active Active
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