Tube structure, electric appliance and preparation method of tube structure

Abstract

The application provides a pipe body structure, an electrical appliance and a preparation method of the pipe body structure. The pipe body structure comprises: a pipe body, which is cast by a melt, and the production material of the melt comprises a glass fiber reinforced material; an auxiliary part, which is arranged at one end of the pipe body in the length direction, and the auxiliary part is provided with an inlet channel, and the outlet of the inlet channel is communicated to the pipe body; and two pouring parts, which are arranged at the end of the auxiliary part away from the pipe body and are connected with the auxiliary part, each of the pouring parts comprises an injection cavity, the end of each of the pouring parts away from the auxiliary part is provided with an injection point communicated with the corresponding injection cavity for the melt to flow in, and the outlet of the injection cavity of each of the pouring parts is communicated with the inlet of the inlet channel, so that the problem that the pipe body part containing the glass fiber is prone to irregular deformation during production in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of parts casting technology, and more specifically, to a tube structure, electrical equipment, and a method for preparing the tube structure. Background Technology

[0002] Glass fiber is widely used in the manufacture of reinforced plastics and rubber due to its high tensile strength, good rigidity, high elastic modulus, and corrosion resistance. Adding glass fiber to plastics can significantly improve their heat resistance, increase their melting point, and parts made from plastics containing glass fiber also have higher strength, rigidity, impact resistance, and creep resistance.

[0003] However, glass fibers also exhibit significant fiber orientation and anisotropic shrinkage, both of which affect their applications. The addition of glass fibers restricts the movement of polymer chains within the material, and the distribution and arrangement of the fibers also influence shrinkage, easily leading to irregular deformation of the product. Furthermore, once the fiber orientation is fixed, this deformation is difficult to improve through processing.

[0004] In the existing technology, two gates are set on the tube part and directly connected to the part. Since the roundness deformation of the end of the tube near the gate is large, material flow jetting is prone to occur, which will cause the orientation of glass fiber to be disordered. If a single gate is set on the tube part and injection molding is carried out, although the area of ​​melt convergence is reduced and the roundness deformation of the tube is reduced, the range of glass fiber orientation non-uniformity will also be increased. Summary of the Invention

[0005] The main objective of this invention is to provide a tube structure, electrical equipment, and a method for manufacturing the tube structure, in order to solve the problem that irregular deformation easily occurs during the production of tube parts containing glass fiber in the prior art.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a tube structure is provided, comprising: a tube body formed by casting a melt, the melt being made of a glass fiber reinforced material; an auxiliary component disposed at one end of the tube body along its length, the auxiliary component having a casting channel, the outlet of the casting channel being connected to the tube body; and two gating components spaced apart at the end of the auxiliary component away from the tube body and both connected to the auxiliary component, each gating component including an injection cavity, each gating component having an injection point at the end of the gating component away from the auxiliary component connected to the corresponding injection cavity for melt to flow into, and the outlet of the injection cavity of each gating component being connected to the inlet of the casting channel.

[0007] Furthermore, the auxiliary component is a ring, and the tube body is a round tube.

[0008] Furthermore, the length of the tube is L1, and the maximum outer diameter of the tube is D1; ​​where L1≥D1.

[0009] Furthermore, the wall thickness H of the pipe is a constant value, and the auxiliary component is located at either end of the pipe; or the wall thickness H of the pipe is a variable value, and the auxiliary component is located at the end of the pipe with the larger outer diameter.

[0010] Furthermore, the outer diameter of the auxiliary component is D2, the inner diameter of the auxiliary component is d2, the length of the auxiliary component is T, and the wall thickness of the tube is H; where (D2-d2) / 2≥2.5×H, 0.25×H≤T≤H.

[0011] Furthermore, the two gate components include a main gate component and a secondary gate component. The main gate component is provided with a main injection point, and the secondary gate component is provided with a secondary injection point. The main gate component and the secondary gate component are symmetrically arranged about a first plane, wherein the first plane passes through the center line of the pipe body.

[0012] Furthermore, the gate component includes a first gate portion and a second gate portion connected to each other, with the first gate portion located on the side of the second gate portion away from the auxiliary component; wherein, the cross-sectional area of ​​the first gate portion remains constant in the length direction parallel to the tube body, and the cross-sectional area of ​​the second gate portion gradually decreases in the direction closer to the auxiliary component.

[0013] Furthermore, a gating plane is formed between the gating component and the auxiliary component. The gating plane is part of a toroidal surface, and the extension trajectory of the gating plane is a circular arc trajectory with an arc length of A, a height of B, a wall thickness of H, and an outer diameter of D2. Wherein, 0.05×π×D2≤A≤0.1×π×D2, 0.2×H≤B≤H.

[0014] Furthermore, the length of the pipe body is L1, the length of the auxiliary component is T, and the length of the gate component is L2; ​​wherein, 10T≤L2≤0.2L1.

[0015] Furthermore, ribs are provided on the inner wall surface of the pipe.

[0016] According to a second aspect of the present invention, an electrical device is provided, comprising the tube structure described above.

[0017] According to a third aspect of the present invention, a method for preparing a tube structure is provided, applicable to the tube structure described above. The method for preparing the tube structure includes: placing an assembly of an auxiliary component and two gate components in a mold; controlling the opening of an injection point of one of the two gate components and calculating a first opening duration for the corresponding injection point; when the first opening duration is equal to a first predetermined duration, controlling the opening of an injection point of the other of the two gate components and calculating a second opening duration for the corresponding injection point; when the second opening duration is equal to a second predetermined duration, controlling the closing of the injection points of both gate components.

[0018] Applying the technical solution of this invention, the tube structure of this invention includes: a tube body, which is formed by casting molten material, the molten material comprising glass fiber reinforcement; an auxiliary component, which is disposed at one end of the tube body along its length and has a casting channel, the outlet of which is connected to the tube body; and two gating gates, which are spaced apart at the end of the auxiliary component away from the tube body and connected to the auxiliary component, each gating gate including an injection cavity, and each end of the gating gate away from the auxiliary component having an injection point connected to the corresponding injection cavity for molten material to flow in, the outlet of the injection cavity of each gating gate being connected to the inlet of the casting channel. Thus, by setting the auxiliary component and the two gating gates and controlling the opening and closing time of the injection points of the two gating gates, the plate structure of this invention avoids irregular warping deformation of the tube body caused by the disordered orientation of the glass fiber reinforcement material, enabling the tube body to achieve uniform shrinkage in all directions, and solving the problem of irregular deformation that easily occurs during the production of glass fiber-containing tube structures in the prior art. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A schematic diagram of an embodiment of the tube structure according to the present invention is shown;

[0021] Figure 2 It shows Figure 1 A partially enlarged view of the tubular structure shown;

[0022] Figure 3 It shows Figure 1 The front view of the tubular structure shown;

[0023] Figure 4 It shows Figure 1 A side view of the tubular structure shown;

[0024] Figure 5 It shows Figure 4A cross-sectional view of the tubular structure shown;

[0025] Figure 6 It shows Figure 5 A partially enlarged view of the tubular structure shown;

[0026] Figure 7 It shows Figure 1 A schematic diagram of the gating component of the tube structure shown;

[0027] Figure 8 It shows Figure 1 A schematic diagram of the assembled structure of the tube body and auxiliary components shown in the diagram;

[0028] Figure 9 It shows Figure 8 The tube and auxiliary components shown are in the front view after assembly;

[0029] Figure 10 It shows Figure 8 The tube and auxiliary components shown are in a side view after assembly.

[0030] Figure 11 It shows Figure 10 The diagram shows a cross-sectional view of the tube and auxiliary components after assembly.

[0031] Figure 12 It shows Figure 11 The diagram shows a partially enlarged view of the assembled tube and auxiliary components.

[0032] The above figures include the following reference numerals:

[0033] 1. Pipe body;

[0034] 2. Auxiliary components;

[0035] 3. Gate component; 30. Inlet plane; 300. Injection point; 31. Main gate component; 32. Secondary gate component; 301. First gate section; 302. Secondary gate section; 33. Main injection point; 34. Secondary injection point. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] like Figures 1 to 12As shown, the present invention provides a tube structure, comprising: a tube 1, which is formed by casting molten material, the molten material being glass fiber reinforced material; an auxiliary component 2, which is disposed at one end of the tube 1 along its length and has a casting channel, the outlet of which is connected to the tube 1; and two gating components 3, which are spaced apart at the ends of the auxiliary component 2 away from the tube 1 and are both connected to the auxiliary component 2, each gating component 3 including an injection cavity, and each end of the gating component 3 away from the auxiliary component 2 having an injection point 300 connected to the corresponding injection cavity for molten material to flow in, the outlet of the injection cavity of each gating component 3 being connected to the inlet of the casting channel.

[0038] In this way, the plate structure of the present invention, by setting the auxiliary component 2 and two gate components 3 and controlling the opening and closing time of the injection points 300 of the two gate components 3, avoids the phenomenon of irregular warping deformation of the tube due to the disordered orientation of the glass fiber reinforced material, so that the tube can achieve a uniform shrinkage effect in all directions, and solves the problem that irregular deformation is easy to occur during the production of tube-like structures containing glass fibers in the prior art.

[0039] Specifically, the melt is in a heated and molten state, and the materials used to make the melt include plastic raw materials and glass fiber reinforced materials.

[0040] Because the melt is subjected to friction and shear forces from the screw, nozzle, runner, and gate during its flow, local viscosity differences are caused, which also damages the interface layer on the surface of the glass fiber. The lower the viscosity of the melt, the greater the impact of internal residual stress on the glass fiber reinforcement during injection molding, making it more likely to cause changes in the dimensions of the product after molding. Therefore, the melt containing both plastic raw materials and glass fiber reinforcement has a different coefficient of thermal expansion than the melt containing only plastic. During heating or cooling, the different rates of dimensional change and the mismatch in thermal expansion can cause the product to deform when the temperature changes. The structure designed in this invention can ensure that the melt fills the entire mold cavity uniformly, reduce the resistance loss of the runner and the uneven flow path, effectively reduce the shear stress and shear rate of the melt when filling the mold cavity, help reduce internal residual stress, and thus reduce the risk of product deformation. Furthermore, it can more precisely control the speed and method of the melt filling the mold cavity, ensuring the consistency of the orientation direction of the glass fiber.

[0041] The function of the auxiliary component 2 of the present invention is to prevent the melt from being filled vertically into a large open cavity during the filling process, reduce the generation of serpentine jets and unstable flow rates, and buffer the bright spots caused by the shear rate of the injection port. At the same time, after buffering, it is beneficial to the reorientation and arrangement of glass fibers. The connection position between the auxiliary component 2 and the tube body 1 can also avoid the defects left after removal in the invisible area.

[0042] like Figures 1 to 12 As shown, auxiliary component 2 is a ring, and tube body 1 is a round tube.

[0043] like Figure 9 As shown, the length of tube 1 is L1, and the maximum outer diameter of tube 1 is D1; ​​where L1≥D1.

[0044] Optionally, the wall thickness H of the tube body 1 is a fixed value, and the auxiliary component 2 is located at either end of the tube body 1; or the wall thickness H of the tube body 1 is a variable value, and the auxiliary component 2 is located at the end of the tube body 1 with the larger outer diameter.

[0045] "The wall thickness H of tube 1 is a constant" means that the wall thickness H of tube 1 remains unchanged at any position; "The wall thickness H of tube 1 is a variable" means that the wall thickness H of tube 1 varies at different positions.

[0046] like Figure 9 and Figure 11 As shown, the outer diameter of auxiliary component 2 is D2, the inner diameter of auxiliary component 2 is d2, the length of auxiliary component 2 is T, the wall thickness of auxiliary component 2 is V, and the wall thickness of tube body 1 is H; where V=(D2-d2) / 2≥2.5×H, 0.25×H≤T≤H.

[0047] like Figures 1 to 5 As shown, the two gate components 3 include a main gate component 31 and a secondary gate component 32. The main gate component 31 is provided with a main injection point 33, and the secondary gate component 32 is provided with a secondary injection point 34. The main gate component 31 and the secondary gate component 32 are symmetrically arranged about a first plane, wherein the first plane passes through the center line of the pipe body 1.

[0048] like Figure 7 As shown, the gate component 3 includes a first gate portion 301 and a second gate portion 302 connected to each other. The first gate portion 301 is located on the side of the second gate portion 302 away from the auxiliary component 2. The cross-sectional area of ​​the first gate portion 301 remains constant in the length direction parallel to the tube body 1, while the cross-sectional area of ​​the second gate portion 302 gradually decreases in the direction closer to the auxiliary component 2.

[0049] like Figure 1 and Figure 2 As shown, a gating plane 30 is formed between the gating part 3 and the auxiliary part 2. The gating plane 30 is part of a toroidal surface. The extension trajectory of the gating plane 30 is a circular arc trajectory with an arc length of A. The height of the gating plane 30 is B. The wall thickness of the tube body 1 is H. The outer diameter of the auxiliary part 2 is D2. Among them, 0.05×π×D2≤A≤0.1×π×D2, 0.2×H≤B≤H.

[0050] like Figures 9 to 12As shown, the length of the tube body 1 is L1, the length of the auxiliary component 2 is T, and the length of the gate component 3 is L2; ​​where 10T≤L2≤0.2L1.

[0051] Preferably, the inner wall surface of the tube body 1 is provided with ribs.

[0052] The present invention provides an electrical device including the above-described tube structure.

[0053] This invention provides a method for preparing a tube structure, applicable to the aforementioned tube structure. The method includes: placing an assembly of an auxiliary component 2 and two gate components 3 in a mold; controlling the opening of an injection point 300 of one of the two gate components 3 and calculating a first opening duration for the corresponding injection point 300; when the first opening duration equals a first predetermined duration, controlling the opening of an injection point 300 of the other of the two gate components 3 and calculating a second opening duration for the corresponding injection point 300; when the second opening duration equals a second predetermined duration, controlling the closing of the injection points 300 of both gate components 3.

[0054] Specifically, the tube body 1 of the tube structure is prepared in the preparation method of this tube structure.

[0055] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0056] The tube structure of the present invention includes: a tube 1, which is formed by casting melt, the melt being made of glass fiber reinforced material; an auxiliary component 2, which is disposed at one end of the tube 1 along its length, and has a casting channel, the outlet of which is connected to the tube 1; and two gating components 3, which are spaced apart at the ends of the auxiliary component 2 away from the tube 1 and are both connected to the auxiliary component 2, each gating component 3 including an injection cavity, and each end of the gating component 3 away from the auxiliary component 2 having an injection point 300 connected to the corresponding injection cavity for melt to flow in, and the outlet of the injection cavity of each gating component 3 being connected to the inlet of the casting channel. In this way, the plate structure of the present invention, by setting the auxiliary component 2 and two gate components 3 and controlling the opening and closing time of the injection points 300 of the two gate components 3, avoids the phenomenon of irregular warping deformation of the tube due to the disordered orientation of the glass fiber reinforced material, so that the tube can achieve a uniform shrinkage effect in all directions, and solves the problem that irregular deformation is easy to occur during the production of tube-like structures containing glass fibers in the prior art.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0059] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0060] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0061] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tubular structure, characterized in that, include: The tube body (1) is formed by casting a melt, and the melt is made of glass fiber reinforced material; Auxiliary component (2) is provided at one end of the length direction of the pipe body (1), and the auxiliary component (2) is provided with a pouring channel, the outlet of the pouring channel being connected to the pipe body (1). Two gate components (3) are spaced apart at the end of the auxiliary component (2) away from the tube body (1) and are both connected to the auxiliary component (2). Each gate component (3) includes an injection cavity. Each end of the gate component (3) away from the auxiliary component (2) is provided with an injection point (300) that communicates with the corresponding injection cavity to allow the melt to flow in. The outlet of the injection cavity of each gate component (3) is connected to the inlet of the gating channel. The auxiliary component (2) is a ring, and the tube body (1) is a round tube; The two gate components (3) include a main gate component (31) and a secondary gate component (32). The main gate component (31) is provided with a main injection point (33), and the secondary gate component (32) is provided with a secondary injection point (34). The main gate (31) and the auxiliary gate (32) are symmetrically arranged about a first plane, wherein the first plane passes through the center line of the tube body (1).

2. The tube structure according to claim 1, characterized in that, The length of the tube (1) is L1, and the maximum outer diameter of the tube (1) is D1; ​​wherein, L1≥D1.

3. The tube structure according to claim 1, characterized in that, The wall thickness H of the tube (1) is a constant, and the auxiliary component (2) is located at either end of the tube (1); or The wall thickness H of the tube (1) is a variable value, and the auxiliary component (2) is located at the end with the larger outer diameter of the two ends of the tube (1).

4. The tube structure according to claim 1, characterized in that, The outer diameter of the auxiliary component (2) is D2, the inner diameter of the auxiliary component (2) is d2, the length of the auxiliary component (2) is T, and the wall thickness of the tube body (1) is H; wherein, (D2-d2) / 2≥2.5×H, 0.25×H≤T≤H.

5. The tube structure according to claim 1, characterized in that, The gate component (3) includes a first gate portion (301) and a second gate portion (302) connected to each other. The first gate portion (301) is located on the side of the second gate portion (302) away from the auxiliary component (2). The cross-sectional area of ​​the first gate portion (301) remains constant in the length direction parallel to the tube body (1), and the cross-sectional area of ​​the second gate portion (302) gradually decreases in the direction close to the auxiliary component (2).

6. The tube structure according to claim 1, characterized in that, The gate component (3) and the auxiliary component (2) form a gating plane (30), the gating plane (30) is part of a toroidal surface, the extension trajectory of the gating plane (30) is an arc trajectory, the arc length of the arc trajectory is A, the height of the gating plane (30) is B, the wall thickness of the tube body (1) is H, and the outer diameter of the auxiliary component (2) is D2; wherein, 0.05×π×D2≤A≤0.1×π×D2, 0.2×H≤B≤H.

7. The tube structure according to claim 1, characterized in that, The length of the tube body (1) is L1, the length of the auxiliary component (2) is T, and the length of the gate component (3) is L2; ​​wherein, 10T≤L2≤0.2L1.

8. The tube structure according to claim 1, characterized in that, The inner wall surface of the tube (1) is provided with ribs.

9. An electrical appliance, characterized in that, The tubular structure includes any one of claims 1 to 8.

10. A method for preparing a tubular structure, characterized in that, The tube structure applicable to any one of claims 1 to 8, wherein the method for preparing the tube structure comprises: The combination of the auxiliary component (2) and the two gate components (3) is placed in the mold; Control the opening of the injection point (300) of one of the two gate components (3) and calculate the first opening duration of the corresponding injection point (300); When the first opening duration is equal to the first predetermined duration, the injection point (300) of the other of the two gate components (3) is controlled to open and the second opening duration of the corresponding injection point (300) is calculated; When the second opening duration is equal to the second predetermined duration, the injection points (300) of the two gate components (3) are closed.

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