A reverse pressure-feeding element combined structure and screw machine
By designing a combined structure of the reverse pressure-feeding element and the support element in the screw machine, the problem of the reverse pressure-feeding element being broken due to the stress on the tip is solved, achieving a more uniform force distribution and higher safety in use.
Patent Information
- Application Number
- CN202420953657.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-06
AI Technical Summary
In existing screw machines, the reverse pressure feeding element is easily broken due to the stress on the tip, which affects use and may bring in foreign matters.
A reverse pressure-feeding element combination structure is designed, including a reverse pressure-feeding element and at least two supporting elements, the inner end face of the support element abutting the end face of the reverse pressure-feeding element and consistent with its structure to provide protection and stress diffusion.
Through the design of the support element, the stress of the reverse pressure-feeding element is evenly diffused, avoiding tip breakage, and improving the service life and safety of the element.
Smart Images
Figure CN222714357U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of screw machines, and in particular to a reverse pressure-feeding element combination structure and a screw machine. Background Art
[0002] In the existing screw machine with reverse pressure-feeding element, the reverse pressure-feeding element is directly fixed on the screw machine. Figure 1 As shown, since the reverse pressure-feeding element is formed by cutting a spiral structure, the force-bearing area of its two end faces is small and there is a tip. Therefore, the reverse pressure-feeding element is easily broken due to the force at the tip position, affecting its use and bringing foreign matter into the material. Utility Model Content
[0003] In view of this, the purpose of the present application is to provide a reverse pressure-feeding element combination structure and a screw machine, which are used to solve the problem that the reverse pressure-feeding element is easily broken due to the force on the tip.
[0004] In order to achieve the above technical objectives, the first aspect of the present application provides a reverse pressure-feeding element combination structure, comprising: a reverse pressure-feeding element and at least two supporting elements;
[0005] The inner end surfaces of the two supporting elements respectively abut against the two end surfaces of the reverse pressure-feeding element;
[0006] The inner end surfaces of the two supporting elements are consistent with the end surface structure of the reverse pressure-feeding element, or the end surface of the reverse pressure-feeding element can completely cover the inner end surface of the supporting element.
[0007] Furthermore, the end surface of the reverse pressure-feeding element is elliptical;
[0008] The inner end surface of the supporting element is elliptical.
[0009] Furthermore, the cross-sectional area of the supporting element decreases from the outside to the inside.
[0010] Furthermore, the supporting element is a high molecular polymer element.
[0011] Furthermore, the tip positions on the end faces of the reverse pressure-feeding elements are all provided with chamfered transition structures.
[0012] A second aspect of the present application provides a screw machine, comprising any of the above-mentioned reverse pressure-feeding element combination structures.
[0013] Further, it also includes a cylinder;
[0014] The reverse pressure-feeding element and the supporting element in the reverse pressure-feeding element combination structure are both arranged in the cylinder.
[0015] Further, it also includes: a screw;
[0016] The reverse pressure-feeding element and the supporting element in the reverse pressure-feeding element combination structure are both threadedly sleeved on the screw rod.
[0017] It can be seen from the above technical scheme that the present application provides a reverse pressure-feeding element combination structure and a screw machine, wherein the reverse pressure-feeding element combination structure includes: a reverse pressure-feeding element and at least two supporting elements; the inner end faces of the two supporting elements respectively abut against the two end faces of the reverse pressure-feeding element; the inner end faces of the two supporting elements are consistent with the end face structure of the reverse pressure-feeding element or the end face of the reverse pressure-feeding element can completely cover the inner end face of the supporting element.
[0018] The supporting element in this scheme can support and protect the two end faces of the reverse pressure-feeding element, and diffuse the pressure on the reverse pressure-feeding element to the entire end face of the reverse pressure-feeding element, thereby preventing the tip of the reverse pressure-feeding element from being broken due to force, and effectively solving the problem that the reverse pressure-feeding element is easily broken due to force on the tip. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0020] Figure 1 A side view of the overall structure of a reverse pressure-feeding element combination structure provided in an embodiment of the present application;
[0021] Figure 2 A three-dimensional diagram of a reverse pressure-feeding element of a reverse pressure-feeding element combination structure provided in an embodiment of the present application;
[0022] Figure 3 A front view of a reverse pressure-feeding element of a reverse pressure-feeding element combination structure provided in an embodiment of the present application;
[0023] Figure 4 A front view of a supporting element of a reverse pressure-feeding element combination structure provided in an embodiment of the present application. DETAILED DESCRIPTION
[0024] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the implementation in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.
[0025] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.
[0027] See also Figure 1 and Figure 2 The first aspect provided in the embodiments of the present application provides a reverse pressure-feeding element combination structure, comprising: a reverse pressure-feeding element 1 and at least two support elements 2; the inner end surfaces of the two support elements 2 respectively abut against the two end surfaces of the reverse pressure-feeding element 1; the inner end surfaces of the two support elements 2 are consistent with the end surface structure of the reverse pressure-feeding element 1 or the end surface of the reverse pressure-feeding element 1 can completely cover the inner end surface of the support element 2.
[0028] The reverse pressure-feeding element 1 can be arranged in the barrel 3 of the screw machine; the inner end surface of the supporting element 2 refers to the end surface thereof abutting against the reverse pressure-feeding element 1. Due to its spiral structure, the reverse pressure-feeding element 1 Figure 2 As shown, its end face is inevitably elliptical, resulting in a pointed tip and a small force-bearing area.
[0029] Specifically, since the existing screw machine does not have a structure specifically abutting the reverse pressure-feeding element 1, the reverse pressure-feeding element 1 is prone to local uneven force after installation, causing the tip of the reverse pressure-feeding element 1 to be easily broken when subjected to force.
[0030] In this embodiment, the supporting element 2 abuts against the reverse pressure-feeding element 1, and can evenly diffuse the force of the reverse pressure-feeding element 1 to its end surface.
[0031] As an implementation mode, the shape of the supporting element 2 may be consistent with that of the reverse pressure-feeding element 1 , and the end surface of the reverse pressure-feeding element 1 may be completely covered, thereby being able to protect the reverse pressure-feeding element 1 and diffuse the force.
[0032] In another embodiment, the area of the support element 2 can be smaller than the area of the reverse pressure element 1. For example, the support element 2 can be the shape of the reverse pressure element 1 without the tip, so that when the support element 2 is subjected to force, it will avoid the tip of the reverse pressure element 1 while exerting force on the reverse pressure element 1, thereby preventing the tip of the reverse pressure element 1 from breaking.
[0033] In a more specific embodiment, Figure 3 and Figure 4 As shown, in this embodiment, the end surface of the reverse pressure-feeding element 1 is elliptical; the inner end surface of the supporting element 2 is elliptical.
[0034] In one embodiment, the cross-sectional area of the support element 2 decreases from the outside to the inside, that is, the area of the outer end surface of the support element 2 is larger than the area of the inner end surface of the support element 2. On the one hand, the rigidity of the support element 2 can be increased, and on the other hand, the outer end surface of the support element 2 can be ensured to be firmly connected to other connecting components.
[0035] In the above embodiment, the supporting element 2 may be a hard polymer element such as hard plastic, which has wear resistance and can buffer and protect the reverse pressure-feeding element 1 .
[0036] Furthermore, a chamfered transition structure is provided at the tip position on the end surface of the reverse pressure-feeding element 1, which can reduce the risk of the tip being broken due to collision.
[0037] A second aspect of the present application provides a screw machine, comprising any of the above-mentioned reverse pressure-feeding element combination structures.
[0038] The supporting element 2 and the reverse pressure-feeding element 1 can both be arranged in the barrel 3 of the screw machine.
[0039] In a more specific embodiment, the screw machine further comprises a screw, and the reverse pressure-feeding element 1 and the supporting element 2 are both threadedly sleeved on the screw, and the reverse pressure-feeding element 1 is driven to rotate by the screw.
[0040] The above are only preferred embodiments of the present application and are not intended to limit the present utility model. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A reverse pressure-feeding element combination structure, characterized in that: include: A reverse pressure-feeding element (1) and at least two supporting elements (2); The inner end surfaces of the two supporting elements (2) respectively abut against the two end surfaces of the reverse pressure-feeding element (1); The inner end surfaces of the two support elements (2) are consistent with the end surface structure of the reverse pressure-feeding element (1), or the end surface of the reverse pressure-feeding element (1) completely covers the inner end surface of the support element (2).
2. The reverse pressure-feeding element assembly structure according to claim 1, characterized in that: The end surface of the reverse pressure-feeding element (1) is elliptical; The inner end surface of the supporting element (2) is elliptical.
3. The reverse pressure-feeding element assembly structure according to claim 1, characterized in that: The cross-sectional area of the supporting element (2) decreases from the outside to the inside.
4. The reverse pressure-feeding element assembly structure according to claim 1, characterized in that: The supporting element (2) is a high molecular polymer element.
5. The reverse pressure-feeding element assembly structure according to claim 1, characterized in that: The tip position on the end surface of the reverse pressure-feeding element (1) is provided with a chamfered transition structure.
6. A screw machine, characterized in that: It comprises the reverse pressure-feeding element combination structure as described in any one of claims 1 to 3.
7. The screw machine according to claim 6, characterized in that: It also includes a cylinder (3); The reverse pressure-feeding element (1) and the supporting element (2) in the reverse pressure-feeding element combination structure are both arranged in the cylinder (3).
8. The screw machine according to claim 6, characterized in that: Also includes: Screw; The reverse pressure-feeding element (1) and the supporting element (2) in the reverse pressure-feeding element assembly structure are both threadedly sleeved on the screw rod.