A turbine

Abstract

The present application provides a turbine, which includes a plastic coating member and an insert structure. The plastic coating member is injection-molded on the outside of the insert structure and at least partially covers the insert structure. The insert structure includes a main body, a first boss extending upward from the top of the main body, and a second boss extending upward from the top of the first boss. A first included angle is provided at the connecting portion between the main body and the first boss, and a second included angle is provided at the connecting portion between the first boss and the second boss. Both the first included angle and the second included angle are obtuse angles. By setting the included angles at the connecting portions between the main body and the first boss and between the first boss and the second boss as obtuse angles, the present application can prevent the high-viscosity raw material in the molten state from being injection-molded in the order from the periphery of the cavity to the middle due to factors such as poor fluidity during injection molding, thereby causing the corner effect to occur at the edge corners of the bosses of the insert structure, directly resulting in stress concentration, and can also avoid the phenomenon of unevenness in multiple places of glass fiber.

Description

Technical Field

[0001] This application relates to the technical field of material processing, and particularly to a turbine. Background Art

[0002] Currently, problems such as whitening, warping, and cracking may occur in the produced plastic turbines. The reason for this series of problems lies in the uneven stress distribution during mold casting. However, there are many influencing factors for uneven stress distribution, such as raw material formula, material temperature, mold temperature, injection time, holding pressure time, and mold structure design. Further experiments also found that during injection molding, due to the poor fluidity of the high-viscosity raw materials in the molten state, the raw materials are injected in the order from the outer periphery of the cavity to the middle, resulting in the occurrence of corner effect phenomena at the angles between adjacent two faces at the edge of the boss of the insert structure, directly leading to stress concentration, and unevenness also appears in many places for the glass fiber.

[0003] Therefore, there is an urgent need to propose a new turbine to solve the above problems. Summary of the Invention

[0004] In order to solve one or more of the above technical problems existing in the prior art, the embodiments of this application provide a new turbine to solve the problems in the prior art that during injection molding, due to factors such as the poor fluidity of the high-viscosity raw materials in the molten state, corner effect phenomena are likely to occur at the angles between adjacent two faces at the edge of the boss of the insert structure, resulting in stress concentration and unevenness of the glass fiber.

[0005] To achieve the above object, the technical solution adopted by this application to solve its technical problems is:

[0006] This application provides a turbine, which includes a plastic coating and an insert structure. The plastic coating is injection molded outside the insert structure and at least partially covers the insert structure. The insert structure includes a main body, a first boss extending upward along the top of the main body, and a second boss extending upward along the top of the first boss. A first angle is provided at the connection part between the main body and the first boss, and a second angle is provided at the connection part between the first boss and the second boss. Both the first angle and the second angle are obtuse angles.

[0007] Further, the insert structure further includes a through hole provided in the middle of the insert structure, and the through hole penetrates the main body, the first boss, and the second boss.

[0008] Further, the insert structure further includes a third boss extending downward along the bottom of the main body, and the through hole penetrates the third boss.

[0009] Further, the insert structure further includes a plurality of first convex structures extending downward along the bottom of the main body, and the plurality of first convex structures are evenly distributed along the circumferential direction of the main body.

[0010] Further, a third included angle is provided at the connecting portion between the first convex structure and the main body, and the third included angle is an obtuse angle.

[0011] Further, the insert structure further includes a concave structure provided at the bottom of the main body, and at least a part of the concave structure is not covered by the plastic covering member.

[0012] Further, the height of the first boss is less than the height of the second boss.

[0013] Further, the plastic covering member includes a covering main body, a second convex structure, and a groove. The second convex structure is provided in the through hole, the groove is provided at the bottom of the covering main body, and the covering main body and the second convex structure are integrally injection molded.

[0014] Further, the plastic covering member further includes a fourth boss extending upward along the top of the covering main body.

[0015] Further, the insert structure is annular, and the plastic covering member is in the shape of a partially hollow cylinder.

[0016] The beneficial effects brought by the technical solution provided by the embodiment of the present application are as follows:

[0017] The turbine provided by the embodiment of the present application includes a plastic covering member and an insert structure. The plastic covering member is injection molded outside the insert structure and at least partially covers the insert structure. The insert structure includes a main body, a first boss extending upward along the top of the main body, and a second boss extending upward along the top of the first boss. A first included angle is provided at the connecting portion between the main body and the first boss, and a second included angle is provided at the connecting portion between the first boss and the second boss. Both the first included angle and the second included angle are obtuse angles. By setting the included angles at the connecting portions of the main body and the first boss and the connecting portion of the first boss and the second boss as obtuse angles, it is possible to avoid the high-viscosity raw material in the molten state during injection molding from being injected in the order from the periphery of the cavity to the middle due to factors such as poor fluidity, resulting in the occurrence of corner effects at the edge corners of the bosses of the insert structure, directly leading to stress concentration, and it is possible to avoid the phenomenon of uneven distribution of glass fibers in multiple places.

[0018] All products of the present application do not need to have all the above effects. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0020] Figure 1 is a sectional view of a turbine provided by an embodiment of the present application;

[0021] Figure 2 is a schematic structural view of an insert structure in a turbine provided by an embodiment of the present application;

[0022] Figure 3 is another schematic structural view of an insert structure in a turbine provided by an embodiment of the present application. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0024] As described in the background art, in the existing turbine structure during injection molding, due to factors such as the poor fluidity of the raw material in a molten state, corner effect phenomena are likely to occur at the included angle between adjacent two faces at the edge of the convex platform of the insert structure, which in turn leads to problems such as stress concentration and uneven distribution of glass fibers.

[0025] To solve one or more technical problems in the prior art, the present application creatively proposes a new turbine. By setting the included angle between the connection part of the main body of the turbine and the first convex platform and the included angle between the connection part of the first convex platform and the second convex platform to be obtuse angles, it is possible to avoid the injection of the raw material in a molten state with poor fluidity and other factors in the order from the outer periphery of the cavity to the middle during injection molding, reduce the probability of corner effect occurring at the edge corners of the convex platform of the insert structure, thereby reducing the stress concentration caused by the corner effect, and avoiding the phenomenon of uneven distribution of glass fibers in multiple places.

[0026] The following will specifically describe the parking post according to the embodiments of the present application with reference to the accompanying drawings.

[0027] Figure 1 is a schematic structural view of a turbine provided by an embodiment of the present application, referring to Figure 1As shown, the turbine provided by the embodiment of the present application mainly includes a plastic coating member 100 and an insert structure 200. Among them, the plastic coating member 100 at least partially covers the insert structure 200. The raw material of the plastic coating member 100 includes but is not limited to glass fiber reinforced nylon 66 material. Specifically, in implementation, the plastic coating member 100 can be coated on the outside of the insert structure 200 by injection molding. As a preferred implementation manner, the insert structure 200 in the embodiment of the present application is integrally annular. Correspondingly, the plastic coating member 100 is integrally in a partially hollow cylindrical shape.

[0028] As a preferred implementation manner, in the embodiment of the present application, the insert structure 200 includes a main body 210, a first boss 220, a second boss 230, a third boss 240, a through hole 250, a first protrusion structure 260, and a recessed structure 270. Further referring to Figures 1 to 3 As shown, the first boss 220 extends upward along the top of the main body 210; the second boss 230 extends upward along the top of the first boss 220; the third boss 240 extends downward along the bottom of the main body 210; the through hole 250 is provided at the middle position of the insert structure 200, and the through hole 250 penetrates the main body 210, the first boss 220, the second boss 230, and the third boss 240; there are multiple first protrusion structures 260, which extend downward along the bottom of the main body 210, and the multiple first protrusion structures 260 are evenly distributed along the circumferential direction of the main body 210; the recessed structure 270 is provided at the bottom of the main body 210, and the recessed structure 270 is provided between the third boss 240 and the first protrusion structure 260.

[0029] Further referring to Figures 1 to 3As shown, a first included angle 211 is provided at the connecting portion between the main body 210 and the first boss 220, a second included angle 212 is provided at the connecting portion between the first boss 220 and the second boss 230, and a third included angle 213 is provided at the connecting portion between the first protruding structure 260 and the main body 210. Preferably, in the embodiment of the present application, the first included angle 211, the second included angle 212, and the third included angle 213 are all obtuse angles. In the prior art, the included angle between two adjacent faces at the edge of the boss in the insert structure of the turbine is usually a right angle. However, through experiments, it is found that when injecting plastic into such a turbine structure, due to factors such as the poor fluidity of the raw material in a molten state, the raw material will be injected in the order from the periphery of the cavity to the middle, resulting in an angular effect phenomenon easily occurring at the included angle between two adjacent faces at the edge of the boss in the insert structure. This will directly lead to stress concentration, making the produced plastic turbine likely to have problems such as whitening, warping, and cracking. To solve the above problems, in the embodiment of the present application, the first included angle 211 and the second included angle 212 are both set as obtuse angles, thereby effectively solving the problem of the angular effect phenomenon easily occurring at the included angle between two adjacent faces at the edge of the boss, greatly reducing the problem of stress concentration, and reducing the problems such as whitening, warping, and cracking that the produced plastic turbine may have.

[0030] Further referring to Figure 1 As shown, both the first boss 220 and the second boss 230 are provided on the top of the main body 210, and the first boss 220 is provided between the main body 210 and the second boss 230. The third boss 240 is provided at the bottom of the main body 210, and the position of the third boss 240 at the bottom of the main body 210 is opposite to the positions of the first boss 220 and the second boss 230 at the top of the main body 210. Specifically, during implementation, the height of the first boss 220 is less than the height of the second boss 230. Chamfers are provided at the edges of both the second boss 230 and the third boss 240.

[0031] As a preferred implementation manner, in the embodiment of the present application, the plastic coating 100 at least partially covers the insert structure 200. Specifically, the plastic coating 100 covers the top of the main body 210 of the insert structure 200, the first boss 220, the second boss 230, the top of the through hole 250, and the first protruding structure 260 in its entirety, partially covers the recessed structure 270, and exposes the third boss 240 and the bottom of the through hole 250.

[0032] Further referring to Figure 1As shown, the plastic coating part 100 includes a coating main body 110, a second convex structure 120, a groove 130, and a fourth boss 140. The coating main body 110 is generally cylindrical. The second convex structure 120 is connected to the coating main body 110 and is located at the top position within the through hole 250 of the insert structure 200. The groove 130 is provided at the bottom of the coating main body 110, and the uncoated part of the recessed structure 270 of the insert structure 200, the third boss 240, and the bottom of the through hole 25 are all exposed in the groove 130. The fourth boss 140 extends upward along the top of the coating main body 110 and is provided at the middle position of the top of the coating main body 110.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "vertical", "parallel", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0034] In the description 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 may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A turbine, characterized in that, the turbine comprises a plastic coating member and an insert structure, the plastic coating member is injection molded outside the insert structure and at least partially covers the insert structure, the insert structure comprises a main body, a first boss extending upward along the top of the main body, and a second boss extending upward along the top of the first boss, a first included angle is provided at the connecting portion between the main body and the first boss, a second included angle is provided at the connecting portion between the first boss and the second boss, and both the first included angle and the second included angle are obtuse angles; the insert structure further comprises a recessed structure provided at the bottom of the main body and a through hole provided in the middle of the insert structure, and at least a part of the recessed structure is not covered by the plastic coating member; the height of the first boss is less than the height of the second boss; the plastic coating member comprises a coating main body, a second protruding structure and a groove, the second protruding structure is provided in the through hole, the groove is provided at the bottom of the coating main body, and the coating main body and the second protruding structure are integrally injection molded.

2. The turbine according to claim 1, characterized in that, the through hole penetrates through the main body, the first boss and the second boss.

3. The turbine according to claim 2, characterized in that, the insert structure further comprises a third boss extending downward along the bottom of the main body, and the through hole penetrates through the third boss.

4. The turbine according to any one of claims 1 to 3, characterized in that, the insert structure further comprises a plurality of first protruding structures extending downward along the bottom of the main body, and the plurality of first protruding structures are uniformly distributed along the circumferential direction of the main body.

5. The turbine according to claim 4, characterized in that, a third included angle is provided at the connecting portion between the first protruding structure and the main body, and the third included angle is an obtuse angle.

6. The turbine according to claim 1, characterized in that, the plastic coating member further comprises a fourth boss extending upward along the top of the coating main body.

7. The turbine according to any one of claims 1 to 3, characterized in that, the insert structure is annular, and the plastic coating member is in the shape of a partially hollow cylinder.

Images