Fiber tube rod and mold thereof

Abstract

The embodiment of the utility model discloses a fiber tube rod and a mold thereof. The tubular rod comprises a rod body, and a first layer is arranged on the outer side face of the rod body. According to the embodiment of the utility model, the first layer is arranged on the outer side surface of the rod body, so that the strength, the impact resistance and other mechanical properties of the pipe rod can be greatly improved, the wear resistance of the pipe rod is improved, and the pipe rod can be prevented from being broken, opened and the like during machining; a corresponding thread structure can be conveniently arranged on the pipe rod in an injection molding mode, machining steps such as thread turning on the rod body are not needed, damage to the pipe rod is greatly reduced, part of the liquid material is tightly connected with the pipe rod after being solidified and formed in the flow channel, the connection stability of the thread structure and the pipe rod can be improved, and the service life of the pipe rod is prolonged. The situation that the thread structure deviates or is prone to damage in the whole assembling process is avoided, and the assembling stability between the pipe rod and other structural parts is guaranteed; and the service life of the pipe rod is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to fiber pipe stick manufacturing technical field especially relates to a kind of fiber pipe stick and its mould. BACKGROUND

[0002] Pultruded composite material (such as glass fiber, carbon fiber, basalt fiber, etc.) pipe stick is widely used in power cable, semiconductor equipment, automobile structural parts and other fields due to its high strength, corrosion resistance, creep resistance and other characteristics.

[0003] When pipe stick is physically assembled with other components, internal / external thread needs to be made, since current pipe stick is smooth rod and high in fiber content, it is easy to cause damage to pipe stick when threading, and it is also found that pipe stick wears faster during use, resulting in significant reduction in service life of pipe stick. SUMMARY

[0004] The utility model aims at at least solving one of the technical problems existing in prior art. For this purpose, the utility model provides a kind of fiber pipe stick and its mould, to solve the problem of short service life of current pipe stick.

[0005] In the first aspect, the utility model provides a kind of fiber pipe stick, including stick body, first layer is equipped on the outer side of stick body, the material quality of first layer is cycloolefin resin, or cycloolefin resin and fiber;

[0006] The pipe stick is provided with at least one flow channel, the first layer and / or the stick body has a threaded structure, and the threaded structure extends an extension part fixed in the flow channel.

[0007] Based on the above-mentioned fiber pipe stick, the first layer provided on the outer side of stick body can greatly improve the strength and impact resistance of the pipe stick. Not only the wear resistance of the pipe stick is improved, but also the pipe stick is prevented from breaking and opening during machining. The flow channel provided on the pipe stick facilitates the setting of the threaded structure on the pipe stick by injection molding, and part of the threaded structure can be fixed inside the pipe stick through the flow channel. Thus, the machining steps such as threading on the stick body are not required, which greatly reduces the damage to the pipe stick. After the partial threaded structure is solidified and formed in the flow channel, it will be tightly connected with the pipe stick, further improving the connection stability of the threaded structure and the pipe stick, avoiding the offset or damage of the threaded structure during the whole assembly process, and ensuring the assembly stability between the pipe stick and other structural parts. Finally, the service life of the pipe stick is greatly extended.

[0008] In one embodiment of the above-mentioned fiber pipe stick, the stick body is provided with a channel along its own axial direction, and the channel is in communication with the flow channel.

[0009] In one embodiment of the fiber tube rod described above, the flow channel penetrates the tube rod in the cross-sectional direction of the tube rod.

[0010] In one embodiment of the fiber tube rod described above, the first layer has a thickness of 1mm to 120mm.

[0011] In one embodiment of the fiber tube rod described above, a second layer is provided between the rod body and the first layer, and the second layer is made of any one of an ultra-high molecular polyethylene film, a glass fiber felt cloth, a polytetrafluoroethylene film, a polyvinylidene fluoride film, or a carbon fiber or a glass fiber.

[0012] In one embodiment of the fiber tube rod described above, the second layer has a thickness of 1mm to 120mm.

[0013] In a second aspect, the utility model provides a mold, including the fiber tube rod and the core rod as described above and the mold core, the mold core has the accommodating cavity of one end opening, be provided with the clamping structure for clamping the tube rod in the accommodating cavity, the core rod is movably inserted in the accommodating cavity, first screw thread is also provided in the accommodating cavity, the side surface of the core rod is equipped with the second screw thread.

[0014] In one embodiment of the mold described above, a cooling passage is provided in the core rod, and a waterproof gasket embedded in the mold is provided at the outlet of the cooling passage.

[0015] The one or more embodiments of the utility model described above have at least one or more of the following beneficial effects:

[0016] By providing the first layer on the outer side of the rod body, the mechanical properties such as the strength and impact resistance of the tube rod can be greatly improved, not only the wear resistance of the tube rod is improved, but also the tube rod is prevented from being broken or opened during machining, and by providing the flow channel on the tube rod, the threaded structure can be provided on the tube rod by injection molding, and part of the threaded structure can be fixed inside the tube rod through the flow channel, so that the machining steps such as threading on the rod body are not required, thereby greatly reducing the damage to the tube rod, and after part of the threaded structure is solidified and formed in the flow channel, the threaded structure will be tightly connected with the tube rod, further improving the connection stability of the threaded structure and the tube rod, avoiding the offset or damage of the threaded structure during the whole assembly process, and ensuring the assembly stability between the tube rod and other structural members.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The disclosure will become more readily understood by reference to the accompanying drawings. It will be readily understood to those skilled in the art that the drawings are not intended to limit the present application, and that the present application is capable of further embodiments and is susceptible to modifications. Like reference numerals are used to designate corresponding parts throughout the several views of the drawings in which:

[0019] Figure 1 is a front view of a fiber tube rod provided by the embodiment of the present application for showing the fiber tube rod;

[0020] Figure 2 is a sectional view of the fiber tube rod and part of the core rod provided by the embodiment of the present application for showing the cooperation relationship between the fiber tube rod and the part of the core rod;

[0021] Figure 3 is a structure diagram of the fiber tube rod and the mold provided by the embodiment of the present application for showing the cooperation relationship between the fiber tube rod and the mold. Figure 2

[0022] Figure 4 is a structure diagram of the fiber tube rod and the mold provided by the embodiment of the present application for showing the cooperation relationship between the fiber tube rod and the mold.

[0023] Explanation of reference numerals

[0024] 1, rod body; 11, flow channel; 12, threaded structure; 121, extension; 13, passage; 2, first layer; 3, second layer; 4, mold core; 41, accommodating cavity; 411, first thread; 42, clamping structure; 5, core rod; 51, second thread; 52, cooling passage; 521, inflow cooling channel; 522, outflow cooling channel; 53, cooling cavity; 54, water-blocking needle; 6, water-blocking gasket. DETAILED DESCRIPTION

[0025] Some embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0026] When threading the current tube rod, the tube rod is easily damaged, and the tube rod wears quickly during use, which greatly shortens the service life of the tube rod.

[0027] ​Therefore, the embodiment of the present application creatively proposes a fiber pipe rod and a mold thereof. The fiber pipe rod comprises a rod body and a first layer arranged on the outer side of the rod body. The first layer arranged on the outer side of the rod body can greatly improve the mechanical properties such as the strength and impact resistance of the pipe rod, not only improves the wear resistance of the pipe rod, but also avoids the pipe rod from being broken or opened during machining. The flow channel arranged on the pipe rod facilitates the setting of the thread structure on the pipe rod by the injection molding mode, and part of the thread structure can be fixed in the pipe rod through the flow channel, so that the machining steps such as thread turning on the rod body are not required, thereby greatly reducing the damage to the pipe rod. After part of the thread structure is solidified and formed in the flow channel, the thread structure is tightly connected with the pipe rod, further improves the connection stability of the thread structure and the pipe rod, avoids the thread structure from being deviated or damaged during the whole assembly process, and ensures the assembly stability between the pipe rod and other structural members. Finally, the service life of the pipe rod is greatly prolonged.

[0028] The present application will be described in detail through specific embodiments.

[0029] Embodiment 1

[0030] Referring to Figures 1 to 3 The embodiment of the present application provides a fiber pipe rod. The fiber pipe rod comprises a rod body 1, a first layer 2 arranged on the outer side of the rod body 1, the material of the first layer 2 is cyclic olefin resin, or cyclic olefin resin and fiber; the pipe rod is provided with at least one flow channel 11, the first layer 2 and / or the rod body 1 is provided with a thread structure 12, and the thread structure 12 extends an extension part 121 fixed in the flow channel 11.

[0031] Among them, Figure 2 And Figure 3 The second thread 51 in the and is not processed by section, so that the related drawings are simple and clear.

[0032] It can be understood that in some embodiments, the material of the first layer 2 can be cyclic olefin resin (COR resin), and can also be a mixture of cyclic olefin resin and fiber. In the embodiment, the material of the first layer 2 is a mixture of cyclic olefin resin and fiber. Considering the material performance and cost, the proportion of fiber is 60% to 80%, and the proportion of cyclic olefin resin is 40% to 20%. It is generally a thermosetting polymer with a certain crosslinking degree formed by organic metal catalytic polymerization of double ring monomer. The specific process is prior art, which will not be described here.

[0033] The fiber tube rod is generally made by pultrusion process, and the first layer 2 is also generated in the pultrusion process, that is, the liquid COR resin is infiltrated on the outer surface of the rod body 1. In order to ensure the overall strength of the tube rod and the convenience of processing, the COR resin generally needs to be completely wrapped on the outer surface of the rod body 1, that is, the first layer 2 completely wraps the outer surface of the rod body 1. Of course, in some cases, the wrapping area of the COR resin can also be adjusted according to actual processing needs.

[0034] The thread structure 12 includes two types of internal threads and external threads, and the specific type depends on the actual assembly needs of the tube rod. The number of flow channels 11 can be flexibly adjusted according to the number of thread structures 12. In the embodiment, the thread structure 12 is formed by injection molding.

[0035] In addition, the liquid material used for the thread structure 12 can be PA66GF (polyamide 66 reinforced glass fiber), or PA66CF (polyamide 66 reinforced carbon fiber), or PPS (polyphenylene sulfide), or POM (polyoxymethylene), or PBT (polybutylene terephthalate).

[0036] The shape of the rod body 1 is various, which can be a multi-prism such as a triangular prism, a quadrangular prism, etc., or a cylindrical shape, an L shape, etc., or even an irregular shape. In the embodiment, the rod body 1 is in a cylindrical shape.

[0037] Specifically, by providing the first layer 2 on the outer side of the rod body 1, the mechanical properties such as the strength and impact resistance of the tube rod can be greatly improved, not only the wear resistance of the tube rod is improved, but also the tube rod is prevented from being broken or opened during machining, and by providing the flow channel 11 on the tube rod, the liquid material can flow to the corresponding position of the tube rod through the flow channel 11 to form the corresponding thread structure 12, so that the machining steps such as threading on the rod body 1 are not needed, thereby greatly reducing the damage to the tube rod, and part of the liquid material is solidified and formed in the flow channel 11, which is tightly connected with the tube rod, further improving the connection stability of the thread structure 12 and the tube rod, avoiding the displacement or damage of the thread structure 12 during the whole assembly process, and ensuring the assembly stability between the tube rod and other structural members. Finally, the service life of the tube rod is greatly prolonged.

[0038] In some embodiments, the rod body 1 is provided with a channel 13 along its own axial direction, and the channel 13 is communicated with the flow channel 11. Specifically, the first layer 2 and the inner wall of the channel 13 of the rod body 1 are respectively provided with external threads and internal threads, and correspondingly, two flow channels 11 communicated with the channel 13 can be provided on the tube rod. The shape of the flow channel 11 can be flexibly adjusted according to actual needs. In the embodiment, the flow channel 11 is in a cylindrical shape, and the axis thereof is perpendicular to the axis of the channel 13, so as to shorten the flow path of the liquid material and shorten the forming time of the thread structure 12.

[0039] Furthermore, in some embodiments, the flow channel 11 extends through the tube along the cross-sectional direction of the tube. This through-flow channel 11 allows the liquid material to flow symmetrically about the axis of the tube 1 to the outer surface of the first layer 2 or the inner surface of the channel 13, thereby shortening the formation time of the threaded structure 12 and making the threaded structure 12 more uniformly formed.

[0040] In some embodiments, the thickness of the first layer 2 is 1 mm to 120 mm. Preferably, the thickness of the first layer 2 is 1 mm to 10 mm, at which a balance can be struck between the production cost and mechanical strength of the tube / bar.

[0041] In some embodiments, a second layer 3 is provided between the rod 1 and the first layer 2. The material of the second layer 3 is ultra-high molecular weight polyethylene film, fiberglass mat, polytetrafluoroethylene film, polyvinylidene fluoride film, carbon fiber, or glass fiber. By providing the second layer 3, the overall mechanical properties of the tube and rod can be improved, the stress on the rod 1 can be improved, and the fibers of the rod 1 can be prevented from being damaged during machining such as drilling.

[0042] In this embodiment, the second layer 3 is made of carbon fiber, which can significantly improve the structural strength of the tube / rod. In other embodiments, the second layer 3 is made of glass fiber, which greatly reduces manufacturing costs while ensuring the structural strength of the tube / rod.

[0043] Furthermore, in some embodiments, the thickness of the second layer 3 is 1mm to 120mm. Preferably, the thickness of the first layer 2 is 1mm to 10mm, at which thickness both production cost and mechanical strength of the tube / rod can be considered.

[0044] Example 2

[0045] Corresponding to Embodiment 1 above, refer to Figure 4 As shown, this application embodiment also provides a mold for fiber tube rods. The mold includes a mold core 4 and a mandrel 5. The mold core 4 has a receiving cavity 41 with one end open. The receiving cavity 41 is provided with a clamping structure 42 for clamping the tube rod. The mandrel 5 is movably inserted into the receiving cavity 41. The receiving cavity 41 is also provided with a first thread 411. The side of the mandrel 5 is provided with a second thread 51.

[0046] It should be noted that the mold also includes structures such as an upper mold and a lower mold, the specific composition of which is existing technology and will not be described in detail here.

[0047] The rod body 1, the first layer 2 and the second layer 3 have been manufactured in a pultrusion process. In the manufacture of the thread structure 12, the core rod 5 is first inserted into the accommodating cavity 41 and fixed to the corresponding structure of the mold (such as the upper mold), and then the axis of the tube rod is aligned with the axis of the accommodating cavity 41, and then the tube rod is inserted into the accommodating cavity 41 so that the axis of the core rod 5 is aligned with the axis of the channel 13 and inserted into the channel 13, and the tube rod is fixed by the clamping structure 42; then the liquid material is injected into the mold, and the liquid material flows through the internal cavity of the mold and the flow channel 11 of the tube rod to the space between the tube rod and the first thread 411 and the second thread 51 to form the internal thread on the inner wall of the channel 13 and the external thread on the outer wall of the first layer 2.

[0048] In some embodiments, the core rod 5 is provided with a cooling passage 52, and a waterproof gasket 6 embedded in the mold is arranged at the outlet of the cooling passage 52.

[0049] Figure 4 The arrow direction is the cooling liquid flow direction. In addition, the related structure of the core rod 5 in the figure is actually installed and matched with other parts of the mold, which is not shown in the figure, and part of the related structure is not shown in the section view. In this embodiment, one end of the core rod 5 has an opening and extends inwardly with a cooling cavity 53, and a waterproof needle 54 is inserted in the core rod 5 to form an outlet cooling channel 522 between the cooling cavity 53 and the waterproof needle 54, and the waterproof needle 54 is provided with an inlet cooling channel 521 communicated with the cooling cavity 53 along the axial direction of the waterproof needle 54. The cooling liquid enters the inlet cooling channel 521 from one end of the waterproof needle 54, and finally flows out through the outlet cooling channel 522, so as to achieve sufficient cooling of the tube rod and shorten the forming time of the thread structure 12. The cooling passage 52 includes the inlet cooling channel 521 and the outlet cooling channel 522. The waterproof gasket 6 is arranged at the outlet of the outlet cooling channel 522 to prevent the cooling liquid from flowing back into the mold. In this embodiment, the waterproof gasket 6 can be a rubber pad.

[0050] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0052] Although the embodiments of the present application have been shown and described above, it is to be understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A fiber tube rod, characterized by, The pipe rod comprises a rod body, a first layer is arranged on the outer side of the rod body, and the first layer is made of cyclic olefin resin or cyclic olefin resin and fiber; The pipe rod is provided with at least one flow channel, the first layer and / or the rod body is provided with a threaded structure, and the threaded structure is provided with an extension part fixed in the flow channel.

2. The fiber tube rod according to claim 1, characterized in that, The rod body is provided with a channel along the axial direction of the rod body, and the channel is communicated with the flow channel.

3. The fiber tube rod according to claim 2, characterized in that, The flow channel penetrates the pipe rod along the cross-sectional direction of the pipe rod.

4. The fiber tube rod according to claim 1, characterized in that, The thickness of the first layer is 1mm-120mm.

5. The fiber tube rod according to claim 1, characterized in that, A second layer is arranged between the rod body and the first layer, and the second layer is made of any one of ultrahigh molecular polyethylene film, glass fiber felt cloth, polytetrafluoroethylene film, polyvinylidene fluoride film, carbon fiber or glass fiber.

6. The fiber tube rod according to claim 5, characterized in that, The thickness of the second layer is 1mm-120mm.

7. A mold for the fiber tube rod according to any one of claims 1 to 6, characterized in that, The mold comprises a mold core and a core rod, the mold core is provided with an accommodating cavity with an open end, the accommodating cavity is provided with a clamping structure for clamping the pipe rod, the core rod is movably arranged in the accommodating cavity, the accommodating cavity is further provided with a first thread, and the side surface of the core rod is provided with a second thread.

8. The mold of claim 7, wherein, The core rod is provided with a cooling channel, and a waterproof gasket embedded in the mold is arranged at the outlet of the cooling channel.

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