A 2.5D rotary body different direction synchronous preform weaving forming method

Abstract

The application discloses a kind of 2.5D rotary body hetero-directional synchronous preform weaving forming method, uses a kind of 2.5D rotary body hetero-directional synchronous profile preform weaving device, weaving device includes support, lifting platform, angle adjusting seat and core mold fixing rod, angle adjusting seat is opened with arc-shaped sliding slot, core mold fixing rod is detachably locked on angle adjusting seat by fastening screw, fastening screw is limited in arc-shaped sliding slot.Weaving device is used to weave annular tubular preform.When weaving, the axis of the corresponding core mold of the preform is adjusted to vertical or horizontal state, and when weaving different weaving areas, the core mold is adjusted to different orientation state through the cooperation of arc-shaped sliding slot and fastening screw, so as to facilitate weaving operation.In the weaving process, the application adjusts the weaving surface of the weaving core mold in different directions to ensure hetero-directional synchronous forming.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of three-dimensional weaving, and particularly relates to a weaving forming method of a 2.5D rotary body different-direction synchronous preform. BACKGROUND

[0002] The 2.5D rotary body different-shaped structure preform belongs to the technical field of three-dimensional fabric of new materials, has the characteristics of designable shape and variable size, and the composite material formed by the preform has a series of advantages such as high strength, impact resistance, impact resistance, and difficulty in delamination.

[0003] The existing 2.5D rotary body different-direction synchronous different-shaped preform shown in Figure 3 and Figure 4 has the following problems: Figure 3 the preform changes at a certain position angle of the tubular shape, Figure 4 the preform has a slanted outward flange on the side edge of the tubular shape without a top or with a top.

[0004] The existing weaving process of the different-shaped preform for the angle change of the component profile has the following disadvantages: 1. The core mold adopts a traditional fixed mode without angle change, which is difficult to directly weave and form. When weaving reaches the angle change position or the flange position of the preform, the warp and weft yarns of the preform are difficult to be interwoven at 90 degrees, and the formed fabric has problems such as poor uniformity in thickness direction, poor size accuracy, and even cannot be used.

[0005] 2. When the weaving reaches the angle change position, the preform is removed together with the core mold, and after the preform is rotated parallel to the ground, the angle change area core mold or the flange bottom mold is installed, and the disassembly and assembly process is prone to cause preform deformation and low efficiency.

[0006] Therefore, the present application is produced after in-depth research by the present inventor. SUMMARY

[0007] The present application aims to provide a weaving forming method of a 2.5D rotary body different-direction synchronous preform, which can ensure the different-direction synchronous weaving forming of the preform, and has an attractive appearance, controllable size accuracy, and high product consistency.

[0008] To achieve the above purpose, the technical solution of the present application is:

[0009] The application discloses a weaving forming method of a 2.5D rotary body opposite-direction synchronous preform, and a weaving device of a 2.5D rotary body opposite-direction synchronous special-shaped preform.

[0010] The preform is a variable-angle pipe preform, which comprises a first section and a second section connected to form an included angle, and the first section and the second section are formed with an inflection point.

[0011] The preform is matched with a corresponding core mold, and the core mold comprises a first axis corresponding to the first section and a second axis corresponding to the second section.

[0012] The weaving forming method comprises the following steps.

[0013] Step S1: the bottom of the preform core mold is locked to the top of the core mold fixing rod, the installation position of the core mold fixing rod relative to the angle adjusting seat is adjusted to be perpendicular to the horizontal direction of the first axis, then the relative height of the lifting platform is adjusted to the height of the weaving area of the core mold, and then the first section of the preform is woven.

[0014] Step S2: after the first section is woven, the installation position of the core mold fixing rod relative to the angle adjusting seat is adjusted again to be perpendicular to the horizontal direction of the second axis, then the second section of the preform is woven, and finally the weaving of the 2.5D rotary body opposite-direction synchronous three-dimensional preform is completed.

[0015] Further, when the relative positions of the core mold fixing rod and the angle adjusting seat are adjusted in steps S1 and S2, the fastening screws are loosened, then the installation position of the core mold fixing rod relative to the angle adjusting seat is adjusted, the fastening screws are movable in the arc-shaped sliding grooves, and finally the fastening screws are locked in the arc-shaped sliding grooves after it is determined that the expected position is reached.

[0016] Further, the number of the arc-shaped sliding grooves is two, and the number of the fastening screws is two, each of the arc-shaped sliding grooves and each of the fastening screws is arranged in one-to-one correspondence, and the two arc-shaped sliding grooves are arranged in upper and lower positions.

[0017] Furthermore, the weaving device also includes a lifting mechanism for assisting the lifting platform in lifting activities. The lifting mechanism includes a lead screw shaft, an electric lead screw jack with a turbine housing, and a lifting guide sleeve. The lead screw shaft is arranged vertically, with its upper end fixed to the center of the lifting platform and its lower end passing through the turbine housing. The electric lead screw jack and turbine housing are mounted on the bracket. The lifting guide sleeve has at least two sets, each consisting of a guide rail and a guide sleeve. The upper end of the guide rail is fixed to the lifting platform, and the lower end of the guide rail movably passes through the guide sleeve. The guide sleeve is fixed to the bracket.

[0018] Furthermore, the number of guide rails and guide sleeves is four sets, and the lifting platform is a square platform. The four sets of guide rails and guide sleeves are arranged one-to-one at the four opposite corners of the square platform.

[0019] A method for weaving and molding a 2.5D rotating body anisotropic synchronous preform uses a weaving device for a 2.5D rotating body anisotropic synchronous irregular preform. The weaving device includes a support, a lifting platform, an angle adjustment seat, and a core mold fixing rod. The lifting platform is horizontally mounted on the support in a liftable manner. The angle adjustment seat is horizontally mounted on the lifting platform. The angle adjustment seat has an arc-shaped groove. The core mold fixing rod is detachably locked to the angle adjustment seat by fastening screws, which are confined within the arc-shaped groove.

[0020] The prefabricated body is a slanted flange prefabricated body, including a straight section and a slanted flange extending outward from one end of the straight section, wherein the radial direction of the slanted flange forms an angle with the axis of the straight section;

[0021] The precast structure is equipped with a corresponding core mold;

[0022] The weaving and forming method includes the following steps:

[0023] Step S1: Lock the bottom end of the core mold to the core mold fixing rod, adjust the position of the core mold fixing rod relative to the angle adjusting seat until the axis of the core mold is perpendicular to the horizontal direction, then adjust the relative height of the lifting platform to raise and lower the weaving area of ​​the core mold to a height that is conducive to weaving, and then weave the straight cylindrical section of the preform.

[0024] Step S2: After the straight section is woven, adjust the installation position of the core mold fixing rod relative to the angle adjustment seat again until the plane where the prefabricated oblique flange is located is on the horizontal plane. Then weave the oblique flange of the prefabricated body to finally complete the weaving of the 2.5D rotating body opposite synchronous three-dimensional prefabricated body.

[0025] Furthermore, the straight section of the precast body includes the side section and the top surface;

[0026] Step S1 includes step S1.1 and step S1.2;

[0027] Step S1.1: lock the bottom end of the core mold to the core mold fixing rod, adjust the position of the core mold fixing rod relative to the angle adjusting seat to the axis of the core mold being perpendicular to the horizontal direction, then move the lifting platform downward to the height of the braiding area of the top sealing surface of the preform corresponding to the core mold below the braiding visual angle, and then braid the top sealing surface of the preform in the flat plate braiding mode;

[0028] Step S1.2: adjust the position of the core mold fixing rod relative to the angle adjusting seat again to the height of the braiding area of the cylindrical side section of the preform corresponding to the core mold, and then braid the cylindrical side section of the preform in the 2.5D braiding rotation body process.

[0029] After the above technical scheme is used, the 2.5D rotation body anisotropic synchronous preform braiding forming method has the following beneficial effects: being suitable for the annular tubular preform braided by the profiled core mold, such as the tubular preform with the change of the position angle at a certain position (such as Figure 3 ) or the tubular preform with the slanted outer flange on the non-sealing top / top sealing side edge (such as Figure 4 ). The braiding device used in the application adjusts the braiding surface of the braiding core mold in different directions during the braiding process of the preform, and ensures the anisotropic synchronous forming. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a braiding use state diagram of the braiding device of the application;

[0031] Figure 2 is another braiding use state diagram of the braiding device of the application;

[0032] Figure 3 is a structure schematic diagram of the preform of the braiding device of the application;

[0033] Figure 4 is another structure schematic diagram of the preform of the braiding device of the application.

[0034] In the drawings:

[0035] Preform a; Core mold b; First axis b1; Second axis b2; Preform c; Cylindrical side section c11; Top sealing surface c12; Support 1; Lifting platform 2; Angle adjusting seat 3; Arc-shaped sliding groove 31; Core mold fixing rod 4; Fastening screw 5; Screw shaft 6; Turbine box 71; Electric screw lifting machine 7; Guide rail 81; Guide sleeve 82. DETAILED DESCRIPTION

[0036] In order to further explain the technical scheme of the application, the application will be described in detail through specific embodiments.

[0037] The application discloses a 2.5D rotary body different-direction synchronous prefabricated body weaving forming method. Figures 1-4 As shown in the figure, a 2.5D rotary body different-direction synchronous special-shaped prefabricated body weaving device is used, which comprises a support 1, a lifting platform 2, an angle adjusting seat 3 and a core mold fixing rod 4. The lifting platform 2 is horizontally installed on the support 1 in a lifting manner. The angle adjusting seat 3 is horizontally installed on the lifting platform 2, and the angle adjusting seat 3 is provided with an arc-shaped sliding groove 31. The core mold fixing rod 4 is detachably locked on the angle adjusting seat 3 through a fastening screw 5, and the fastening screw 5 is limited in the arc-shaped sliding groove 31.

[0038] The weaving device of the application is used for weaving the annular tubular prefabricated body of the profiled core mold. As shown in the prefabricated body a in the figure, Figure 3 and the prefabricated body c in the figure, Figure 4 .

[0039] Referring to the figure, Figure 3 The prefabricated body a is a variable-angle pipe prefabricated body, which comprises a first segment and a second segment connected to form an included angle, and the first segment and the second segment are formed with an inflection point.

[0040] The prefabricated body a is matched with a corresponding core mold b. The core mold b comprises a first axis b1 corresponding to the first segment and a second axis b2 corresponding to the second segment. The top end of the core mold b is taken as a point A, the middle inflection point is taken as a point B, and the bottom end is taken as a point C. Correspondingly, the core mold b comprises an AB segment corresponding to the first segment and a BC segment corresponding to the second segment.

[0041] The weaving forming method of the application comprises the following steps:

[0042] Step S1: The bottom of the core mold b of the prefabricated body a is locked on the top of the core mold fixing rod 4, the installation position of the core mold fixing rod 4 relative to the angle adjusting seat 3 is adjusted to be perpendicular to the horizontal direction, then the relative height of the lifting platform 2 is adjusted to make the weaving area of the core mold b be lifted to a height beneficial to weaving, and then the first segment (corresponding to the AB segment of the core mold b) of the prefabricated body a is woven.

[0043] Step S2: After the first segment is woven, the installation position of the core mold fixing rod 4 relative to the angle adjusting seat 3 is adjusted again to be perpendicular to the horizontal direction, then the second segment (corresponding to the BC segment of the core mold b) of the prefabricated body a is woven, and finally the weaving of the 2.5D rotary body different-direction synchronous three-dimensional prefabricated body is completed.

[0044] Specifically, when the relative position of the core mold fixing rod 4 and the angle adjusting seat 3 is adjusted at steps S1 and S2, the mounting position of the core mold fixing rod 4 relative to the angle adjusting seat 3 is adjusted by loosening the fastening screw 5, then the fastening screw 5 is moved in the arc-shaped sliding groove 31, and finally the fastening screw 5 is locked in the arc-shaped sliding groove 31 after it is determined that the expected position is reached.

[0045] The number of the arc-shaped sliding grooves 31 is two, and the number of the fastening screws 5 is also two, each arc-shaped sliding groove 31 is arranged in one-to-one correspondence with each fastening screw 5, and the two arc-shaped sliding grooves 31 are arranged in upper and lower positions. Both of the arc-shaped sliding grooves 31 are upwardly protruding arc-shaped grooves, that is, the centers of the arc-shaped segments are located below the arc-shaped grooves.

[0046] The present application adjusts the positions of the two fastening screws 5 in the arc-shaped sliding grooves 31, and two movable points are formed during adjustment, so that the angle of the core mold fixing rod 4 is controlled to match the angle transformation of the prefabricated body core mold b. If one movable point is used for fastening, the problem of unstable support is easily caused, and the core mold b is easily deviated during weaving. If a connection mode of one fixed point and one movable point is used, only one fastening screw 5 is used to adjust the angle along the arc-shaped sliding groove 31, which causes the core mold of the product to deviate from the center point of the entire device by a large margin, and causes the weaving operation of the weaver to be difficult. However, the two arc-shaped sliding grooves 31 used in the present application can avoid such problems.

[0047] When the weaving height of the product is from the top end (point A) of the core mold b to the middle part (point B) and the lower part (point C), the height of the lifting platform 2 can be adjusted to ensure that the core mold is at a suitable weaving visual height, which is beneficial to the weaving forming efficiency and quality of the product.

[0048] The weaving device further comprises a lifting mechanism for assisting the lifting platform 2 to perform lifting activities, the lifting mechanism comprises a lead screw shaft 6, an electric lead screw lifter 7 with a worm box 71, and lifting guide rail guide sleeves, the lead screw shaft 6 is arranged in a vertical direction, the upper end of the lead screw shaft 6 is fixed to the center position of the lifting platform 2, the lower end of the lead screw shaft 6 passes through the worm box 71, the electric lead screw lifter 7 and the worm box 71 are arranged on the support 1, the number of the lifting guide rail guide sleeves is at least two sets, the lifting guide rail guide sleeves comprise guide rails 81 and guide sleeves 82, the upper end of the guide rail 81 is fixed to the lifting platform 2, the lower end of the guide rail 81 is movably arranged in the guide sleeve 82, and the guide sleeve 82 is fixed to the support 1. The lifting guide rail guide sleeves are used to assist the lifting platform 2 to rise and fall, and keep the horizontal position of the lifting platform 2 stable.

[0049] Preferably, the number of the guide rail guide sleeves is four sets, the lifting platform 2 is a square platform, and the four sets of the lifting guide rail guide sleeves are arranged in one-to-one correspondence in the vertical positions of the four corners of the square platform in the height direction.

[0050] Reference Figure 4As shown, the preform c is a bevel flange preform, including a straight cylinder segment c1, and a bevel flange c2 extending outward from one end of the straight cylinder segment c1, and the radial direction of the bevel flange c2 forms an angle with the axis of the straight cylinder segment c1;

[0051] The preform c is matched with a corresponding core mold d;

[0052] The weaving forming method of the preform c comprises the following steps:

[0053] Step S1: lock the bottom end of the core mold d to the core mold fixing rod 4, adjust the position of the core mold fixing rod 4 relative to the angle adjusting seat 3 to make the axis d1 of the core mold d perpendicular to the horizontal direction, then adjust the relative height of the lifting platform 2 to make the weaving area of the core mold d lifted to a height conducive to weaving, and then weave the straight cylinder segment c1 of the preform c;

[0054] Step S2: after the straight cylinder segment c1 is woven, the installation position of the core mold fixing rod 4 relative to the angle adjusting seat 3 is adjusted again to make the plane where the preform bevel flange c2 is located on the horizontal plane, and then the bevel flange c2 of the preform is woven, and finally the weaving of the 2.5D rotary body opposite synchronous three-dimensional preform is completed. It should be noted that the weaving method of the bevel flange c2 is the conventional flat plate weaving.

[0055] Further, the straight cylinder segment c1 of the preform c includes a cylinder side segment c11 and a top sealing surface c12.

[0056] Step S1 includes step S1.1 and step S1.2.

[0057] Step S1.1: lock the bottom end of the core mold d to the core mold fixing rod 4, adjust the position of the core mold fixing rod 4 relative to the angle adjusting seat 3 to make the axis d1 of the core mold d perpendicular to the horizontal direction, then move the lifting platform 2 downward to make the weaving area of the core mold d corresponding to the top sealing surface c12 of the preform lowered to a height below the weaving visual angle, and then weave the top sealing surface of the preform by using the flat plate weaving method. It should be noted that the flat plate weaving method is a conventional weaving method.

[0058] Step S1.2: adjust the position of the core mold fixing rod 4 relative to the angle adjusting seat 3 again to make the weaving area of the core mold d corresponding to the cylinder side segment c11 of the preform lifted to a height conducive to weaving, and then weave the cylinder side segment c11 of the preform by using the 2.5D weaving rotary body process.

[0059] After the above technical scheme is adopted, the weaving forming method of the 2.5D rotary body opposite synchronous preform has the following beneficial effects: the annular tubular preform is suitable for weaving with a profiled core mold, such as a tubular preform whose position angle changes at a certain position (for example, Figure 3 ) or a tubular preform whose side edge with a top sealing surface has a bevel flange (for example, Figure 4). The braiding device used in the present application provides the preform with the different direction of the braiding surface of the braiding core mold during the braiding process, and ensures the synchronous forming in different directions.

[0060] The above embodiments and drawings are not limited to the product shape and style of the present application, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present application.

Claims

1. A method for weaving and molding a 2.5D rotating anisotropic synchronous preform, characterized in that: A weaving device for a 2.5D rotating body anisotropic synchronous irregular shape preform is used. The weaving device includes a bracket, a lifting platform, an angle adjustment seat, and a core mold fixing rod. The lifting platform is horizontally installed on the bracket in a liftable manner. The angle adjustment seat is horizontally installed on the lifting platform. The angle adjustment seat has an arc-shaped sliding groove. The core mold fixing rod is detachably locked to the angle adjustment seat by fastening screws. The fastening screws are limited to the arc-shaped sliding groove. The precast body is a variable angle tube precast body, including a first segment and a second segment connected to form an included angle, and the first segment and the second segment form a corner point; The precast body is equipped with a corresponding core mold, which includes a first axis corresponding to the first segment and a second axis corresponding to the second segment. The weaving device also includes a lifting mechanism to assist the lifting platform in lifting activities. The lifting mechanism includes a lead screw shaft, an electric lead screw jack with a turbine box, and a lifting guide sleeve. The lead screw shaft is arranged vertically, and its upper end is fixed to the center of the lifting platform. The lower end of the lead screw shaft passes through the turbine box. The electric lead screw jack and the turbine box are mounted on the bracket. The number of lifting guide sleeves is at least two sets. Each lifting guide sleeve includes a guide rail and a guide sleeve. The upper end of the guide rail is fixed to the lifting platform, and the lower end of the guide rail is movably inserted into the guide sleeve. The guide sleeve is fixed to the bracket. The weaving and forming method includes the following steps: Step S1: Lock the bottom of the preform core mold to the top of the core mold fixing rod, adjust the installation position of the core mold fixing rod relative to the angle adjustment seat until the first axis is perpendicular to the horizontal direction, then adjust the relative height of the lifting platform so that the weaving area of ​​the core mold is raised and lowered to a height that is conducive to weaving, and then weave the first section of the preform. Step S2: After the first section of weaving is completed, adjust the installation position of the core mold fixing rod relative to the angle adjustment seat again until the second axis is perpendicular to the horizontal direction. Then weave the second section of the preform, and finally complete the weaving of the 2.5D rotating body anisotropic synchronous three-dimensional preform.

2. The weaving and molding method for a 2.5D rotating anisotropic synchronous preform as described in claim 1, characterized in that: When adjusting the relative position of the core mold fixing rod and the angle adjusting seat in steps S1 and S2, the fastening screw is loosened, and then the installation position of the core mold fixing rod relative to the angle adjusting seat is adjusted. The fastening screw is limited to moving within the arc-shaped slide groove. Finally, after determining that the expected position has been reached, the fastening screw is locked in the arc-shaped slide groove.

3. The weaving and molding method for a 2.5D rotating anisotropic synchronous preform as described in claim 1, characterized in that: There are two arc-shaped sliding grooves and two fastening screws. Each arc-shaped sliding groove and each fastening screw are arranged in a one-to-one correspondence, and the two arc-shaped sliding grooves are arranged in an upper and lower position.

4. The weaving and molding method for a 2.5D rotating anisotropic synchronous preform as described in claim 1, characterized in that: The number of guide rails and guide sleeves is four sets. The lifting platform is a square platform, and the four sets of guide rails and guide sleeves are respectively set at the four corners of the square platform in the height direction.

5. A method for weaving and molding a 2.5D rotating anisotropic synchronous preform, characterized in that: A weaving device for a 2.5D rotating body anisotropic synchronous irregular preform is used. The weaving device includes a bracket, a lifting platform, an angle adjustment seat, and a core mold fixing rod. The lifting platform is horizontally mounted on the bracket in a liftable manner. The angle adjustment seat is horizontally mounted on the lifting platform. The angle adjustment seat has an arc-shaped sliding groove. The core mold fixing rod is detachably locked to the angle adjustment seat by fastening screws, and the fastening screws are limited to the arc-shaped sliding groove. The prefabricated body is a beveled flange prefabricated body, including a straight section and a beveled flange extending outward from one end of the straight section, wherein the radial direction of the beveled flange forms an angle with the axis of the straight section; The precast structure is equipped with a corresponding core mold; The weaving and forming method includes the following steps: Step S1: Lock the bottom end of the core mold to the core mold fixing rod, adjust the position of the core mold fixing rod relative to the angle adjusting seat until the axis of the core mold is perpendicular to the horizontal direction, then adjust the relative height of the lifting platform to raise and lower the weaving area of ​​the core mold to a height that is conducive to weaving, and then weave the straight cylindrical section of the preform. Step S2: After the straight section is woven, adjust the installation position of the core mold fixing rod relative to the angle adjustment seat again until the plane where the prefabricated oblique flange is located is on the horizontal plane, and then weave the oblique flange of the prefabricated body to finally complete the weaving of the 2.5D rotating body opposite synchronous three-dimensional prefabricated body; The straight section of the precast structure includes the side section and the top surface; Step S1 includes: Step S1.1 and Step S1.2; Step S1.1: Lock the bottom end of the core mold to the core mold fixing rod, adjust the position of the core mold fixing rod relative to the angle adjusting seat until the axis of the core mold is perpendicular to the horizontal direction, then move the lifting platform down until the weaving area of ​​the top surface of the preform corresponding to the core mold is lowered to a height below the weaving angle, and then weave the top surface of the preform using a flat weaving method. Step S1.2: readjust the position of the core mold fixing rod relative to the angle adjustment seat to raise or lower the weaving area of ​​the preform's cylindrical side section to a height conducive to weaving, and then use the 2.5D weaving rotary body process to weave the cylindrical side section of the preform.

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