Winding device, winding method and equipment for preparing tubular composite material

Abstract

The present invention relates to the technical field of composite pipe material preparation, and discloses a winding device, a winding method, and equipment for preparing tubular composite materials. The winding device and winding method provided by the present invention can tighten the binding belt by lifting and lowering the binding belt bracket, and use the binding belt to press the material belt to the outer peripheral wall of the mold shaft, thereby improving the material belt tensioning effect during winding, and can effectively avoid the occurrence of delamination during winding, ensuring that the surface of the sandwich material layer formed by winding outside the mold shaft is smooth, and avoiding the phenomenon of local stress concentration. The equipment for preparing tubular composite materials provided by the present invention includes the above-mentioned winding device. When used to form a sandwich material layer of a tubular composite material from multiple sheets, it can form a sandwich material layer by winding, and the efficiency of forming the sandwich material layer is high, and the interface bonding effect between the sandwich material and the mold shaft is good.

Description

Technical Field

[0001] The present invention relates to the technical field of composite pipe material preparation, and in particular to a winding device, a winding method and equipment for preparing tubular composite materials. Background Art

[0002] The tubular structure, formed by wrapping a fiberglass composite material around a cylindrical mold, offers advantages such as low weight, corrosion resistance, structural integrity, high rigidity, and uniform mass distribution. To improve the rigidity and mechanical properties of the tubular structure while reducing the weight of the shell, the tubular structure comprises an inner fiberglass layer, an outer fiberglass layer, and a core material layer sandwiched between the inner and outer fiberglass layers.

[0003] The preparation process of the above-mentioned tubular structure is as follows: (1) a continuous glass fiber material is circumferentially wound on a cylindrical mold to form an inner glass fiber layer; (2) a plurality of sheet-like or strip-like materials are arranged circumferentially and parallel to the surface of the inner glass fiber layer to form a sandwich material layer; (3) according to the winding process, a continuous glass fiber material is circumferentially wound on the outside of the sandwich material layer to form an outer glass fiber layer.

[0004] When the outer diameter of the shell structure is large, the required sandwich sheets are larger in size, length, and quantity. Laying the sandwich sheets outside the inner fiberglass layer requires separately securing the sandwich sheets and the cylindrical mold. This is time-consuming, inefficient, and poorly wound, making this method unsuitable for mass production.

[0005] To this end, existing technologies have proposed a method of first connecting multiple sheets in sequence to form a roll-up tape, and then winding the roll-up tape around a cylindrical mold to form a core sheet layer. However, due to the characteristics of the roll-up tape, when the core sheet layers are wound in multiple layers, there is a high probability of delamination between the different core sheets, between the core sheets and the inner wound layer located inside the core sheets, and between the core sheets and the outer wound layer located outside the core sheets. In addition, localized stress concentration may occur. Summary of the Invention

[0006] The purpose of the present invention is to provide a winding device, a winding method and a preparation equipment for a tubular composite material, which can improve the winding efficiency of winding a sandwich core material on the surface of a mold shaft and improve the winding quality.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] Winding device, comprising:

[0009] An unwinding shaft, the unwinding shaft being capable of rotating circumferentially around its own axis;

[0010] A mold shaft, the mold shaft being capable of rotating circumferentially around its own axis to wind the material strip on the unwinding shaft around the outside of the mold shaft;

[0011] Also includes:

[0012] a binding belt, through which the mold shaft passes;

[0013] The strap bracket can be raised and lowered and is connected to the strap.

[0014] As an optional technical solution of the above-mentioned winding device, at least two binding belts are provided, and the at least two binding belts are distributed at intervals along the axial direction of the mold axis.

[0015] As a preferred technical solution of the above-mentioned winding device, the strap bracket and the binding strap are arranged in a one-to-one correspondence.

[0016] As an optional technical solution of the above winding device, it also includes:

[0017] A lifting bracket, wherein the lifting bracket can be raised and lowered;

[0018] A lifting drive unit is configured to enable the strap bracket to be lifted or lowered relative to the lifting bracket.

[0019] As an optional technical solution of the above winding device, it also includes:

[0020] The unwinding bracket is connected to the unwinding bracket and can rotate circumferentially around its own axis relative to the unwinding bracket. The unwinding bracket is connected to the lifting bracket.

[0021] As an optional technical solution of the above-mentioned winding device, the strap bracket is provided with a roller that can rotate circumferentially around its own axis, and the binding strap passes around the roller and the mold shaft to form a pulley structure with the mold shaft and the roller.

[0022] As an optional technical solution of the above-mentioned winding device, the unwinding shaft passes through the binding belt.

[0023] In order to achieve the above object, the present invention further provides a winding method for use with the winding device described in any of the above solutions, comprising the following steps:

[0024] Control the lifting and lowering of the strap bracket to tighten the strap;

[0025] Fixing one end of the material strip on the unwinding shaft to the outside of the mold shaft;

[0026] The mold shaft is controlled to rotate circumferentially around its own axial direction at a preset speed so as to wind the material strip on the unwinding shaft around the outside of the mold shaft.

[0027] In order to achieve the above-mentioned object, the present invention further provides a preparation device for a tubular composite material, characterized in that it comprises the winding device described in any of the above-mentioned solutions.

[0028] Beneficial effects of the present invention: The winding device and winding method provided by the present invention can tighten the binding belt by lifting the binding belt bracket, and use the binding belt to press the material belt to the outer wall of the mold shaft, thereby improving the tensioning effect of the material belt during winding, and can effectively avoid the delamination phenomenon during winding, ensuring that the surface of the sandwich material layer formed by winding outside the mold shaft is smooth, avoiding local stress concentration.

[0029] The preparation equipment of the tubular composite material provided by the present invention includes the above-mentioned winding device. When used to form a sandwich material layer of a tubular composite material from multiple sheets, the sandwich material layer can be formed by winding. The efficiency of forming the sandwich material layer is high, and the interface bonding effect between the sandwich material and the mold shaft is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0031] Figure 1 1 is a schematic structural diagram of a winding device provided by an embodiment of the present invention;

[0032] Figure 2 yes Figure 1 A local enlarged schematic diagram of point A in the middle.

[0033] In the picture:

[0034] 1. Unwinding shaft; 2. Mold shaft; 3. Binding belt; 4. Binding belt bracket; 5. Lifting bracket; 51. Lifting parts; 6. Roller; 7. Unwinding bracket;

[0035] 100. Material strip; 101. Sheet. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0037] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0040] like Figure 1 and Figure 2 As shown, this embodiment provides a winding device, including a mold shaft 2 and a reeling shaft 1, wherein the reeling shaft 1 can rotate circumferentially around its own axis; the mold shaft 2 can rotate circumferentially around its own axis to wind the material strip 100 on the reeling shaft 1 around the outside of the mold shaft 2.

[0041] The material strip 100 is a continuous, retractable strip-like structure. For example, the material strip 100 is a roll-like strip 100 formed by sequentially spaced sheets 101 connected by hot-melt adhesive mesh or braided wire. After the material strip 100 is wrapped around the mold shaft 2, a sandwich material layer of tubular composite material is formed, with the individual sheets 101 extending axially along the mold shaft 2. It should be noted that the material strip 100 is not limited to a roll-like strip 100, nor is it limited to being wound around the mold shaft 2 to form a sandwich material layer.

[0042] The material strip 100 wound on the unwinding shaft 1 is fixed at one end to the outside of the mold shaft 2. The mold shaft 2 is then controlled to rotate, thereby winding the material strip 100 on the unwinding shaft 1 around the outside of the mold shaft 2. It should be noted that the cross-section of the mold shaft 2 is, but is not limited to, circular. Optionally, to reduce weight, while maintaining rigidity, the mold shaft 2 and unwinding shaft 1 may be hollow structures.

[0043] When the material strip 100, especially a roll-up type material strip 100, is wound around the mold shaft 2 to form a sandwich material layer, delamination is very likely to occur. To this end, the winding device further includes a binding belt 3 and a binding bracket 4, wherein the mold shaft 2 passes through the binding belt 3; the binding bracket 4 can be raised and lowered and is connected to the binding belt 3. The binding belt 3 can be tightened by raising and lowering the binding bracket 4, and the material strip 100 is pressed against the outer wall of the mold shaft 2 using the binding belt 3, thereby improving the tensioning effect of the material strip 100 during winding, effectively preventing delamination during winding, ensuring that the surface of the sandwich material layer formed by winding around the mold shaft 2 is smooth, and avoiding local stress concentration.

[0044] In some embodiments, at least two binding bands 3 are provided, with the at least two binding bands 3 spaced apart along the axial direction of the mold shaft 2. Providing multiple binding bands 3 not only prevents axial movement of the material strip 100 wound around the mold shaft 2, but also presses the material strip 100 against the outer circumferential wall of the mold shaft 2 from multiple locations, further improving the wrapping effect of the material strip 100 during wrapping. The number of binding bands 3 can be determined based on the axial length of the material strip 100 along the mold shaft 2 and the actual wrapping effect. For example, eight binding bands 3 are provided.

[0045] Optionally, the strap bracket 4 and the binding strap 3 are set in one-to-one correspondence, and the corresponding binding strap 3 can be tightened separately by raising and lowering the strap bracket 4. The tightening force of at least part of the binding strap 3 can be adjusted according to the actual situation of the material belt 100, thereby effectively avoiding the problem of inconsistent local tightening effect of the binding strap 3, and individual binding straps 3 can be tightened in real time according to actual needs during the actual winding process.

[0046] In some embodiments, the winding device also includes a lifting bracket 5 and a lifting drive unit, wherein the lifting bracket 5 can be lifted and lowered. Such a setting is conducive to achieving the synchronous lifting of all the binding straps 3 through the lifting of the lifting bracket 5, so as to perform the preliminary tightening of the binding straps 3; and then the corresponding binding straps 3 are tightened separately through the lifting drive unit, which is conducive to shortening the time consumed in tightening the binding straps 3, improving the control accuracy when tightening the binding straps 3, and thus improving the tightening effect of the binding straps 3.

[0047] For example, the fixed end of the lifting drive unit is connected to the lifting bracket 5, and the movable end of the lifting drive unit is connected to the strap bracket 4. The lifting drive unit can be a telescopic cylinder, such as a pneumatic cylinder, a hydraulic cylinder, etc., or an electric push rod, etc., which will not be explained here one by one.

[0048] In some embodiments, a lifting member 51 is provided at the top of the lifting bracket 5 for hooking and connecting to the lifting structure. The lifting structure enables the entire lifting bracket 5 to be raised and lowered. The lifting member 51 can be a lifting ring with a lifting hole, or a lifting hook, depending on the lifting structure. For example, the lifting structure has a lifting hook, and the lifting member 51 is a lifting ring with a lifting hole. The specific structure of the lifting structure is prior art in the art and will not be described in detail here. For example, there are at least two lifting members 51, and the at least two lifting members 51 are spaced apart along the axial direction of the mold shaft 2.

[0049] In some embodiments, the strap bracket 4 is provided with a roller 6 that can rotate circumferentially about its own axis. The strap 3 is passed around the roller 6 and the mold shaft 2 to form a pulley structure with the mold shaft 2 and the roller 6. This design helps reduce friction between the strap 3 and the material strip 100, improving the winding effect and efficiency of the material strip 100 on the unwinding shaft 1 around the outside of the mold shaft 2.

[0050] In some embodiments, the unwinding shaft 1 passes through the binding strap 3. This design allows for a rational layout of the entire winding apparatus, preventing interference between the roller 6 and the unwinding shaft 1 and reducing the space occupied by the winding apparatus. For example, the binding strap support 4 and the unwinding shaft 1 are located on the same side of the mold shaft 2. This design maximizes the contact area between the binding strap 3 and the material strip 100, enhancing the compression of the binding strap 3 against the outside of the mold shaft 2, and thus improving the winding effect.

[0051] In some embodiments, the mold shaft 2 is connected to a mold drive unit for driving it to rotate circumferentially around its own axis, and the mold drive unit is a variable speed drive structure. Such a configuration can adjust the speed of the mold shaft 2 according to demand.

[0052] After the first sheet 101 on the material strip 100 is fixed to the mold shaft 2, the mold drive unit controls the rotation of the mold shaft 2 to wrap the sheets 101 on the material strip 101 one by one around the outside of the mold shaft 2 to form a closed loop, which is conducive to improving the interface bonding effect between the sheet 101 and the mold shaft 2.

[0053] For example, after the curtain-type material strip 100 is wound using the winding tool, the unwinding shaft 1 with the material strip 100 wound thereon is transferred to the winding station via the hoisting structure, so that the curtain-type material strip 100 on the unwinding shaft 1 can be wound around the mold shaft 2 using the winding device. It should be noted that the unwinding shaft 1 is part of the winding tool and is detachable, so that after the winding tool is wound, the unwinding shaft 1 with the material strip 100 wound thereon can be removed and transferred to the winding station via the hoisting structure.

[0054] Optionally, the mold driving unit is a motor, which has low cost and convenient speed adjustment.

[0055] In some embodiments, in order to improve the interface fitting effect of the binding belt 3 so as to fit the material strip 100 and the mold shaft 2 together, the binding belt 3 is an elastic belt.

[0056] In some embodiments, as Figure 2 As shown, the winding device further includes an unwinding bracket 7, to which the unwinding shaft 1 is connected and can rotate circumferentially about its own axis relative to the unwinding bracket 7. The unwinding bracket 7 is connected to the lifting bracket 5. When the lifting bracket 5 is raised or lowered, it can simultaneously drive the unwinding bracket 7 to rise and fall, and the unwinding shaft 1 wrapped with the material strip 100 to rise and fall synchronously, which is conducive to improving the bonding effect of the binding belt 3 to bond the sheet 101 to the mold shaft 2.

[0057] The present invention also provides an apparatus for preparing a tubular composite material, which is used to form a tubular composite material by winding. The composite pipe material includes at least two winding layers and a sandwich material layer located between the two adjacent winding layers. The sandwich material layer is composed of multiple sheets 101 arranged in a circumferentially spaced arrangement. In some embodiments, the sandwich material layer can also be composed of multiple strips arranged in a circumferentially spaced arrangement.

[0058] The tubular composite material manufacturing apparatus includes a strip forming device and the aforementioned winding device. The strip forming device is used to sequentially connect multiple sheets 101 to form a roll-up strip 100, which can then be wound up using a winding tool. For example, a composite pipe material having a three-layer structure, comprising two wound layers and a core sheet layer located between the two wound layers, is described as an inner wound layer, and the outer wound layer is described as an outer wound layer for ease of explanation.

[0059] After the inner winding layer is wound around the mold shaft 2, the material tape 100 on the unwinding shaft 1 is wound around the inner winding layer by the winding device to form a sandwich material layer; and then the outer winding layer is wound around the sandwich material layer to form an outer winding layer.

[0060] The present invention also provides a winding method for use with the above-mentioned winding device, the winding method specifically comprising the following steps:

[0061] S1, controlling the lifting and lowering of the strap bracket 4 to tighten the strap 3;

[0062] S2, fix one end of the material strip 100 on the unwinding shaft 1 to the outside of the mold shaft 2;

[0063] S3 , controlling the mold shaft 2 to rotate circumferentially around its own axis at a preset speed, so as to wind the material tape 100 on the unwinding shaft 1 around the outside of the mold shaft 2 .

[0064] In order to improve the interface bonding effect between the material strip 100 and the mold shaft 2, in step S2, while controlling the mold shaft 2 to rotate circumferentially around its own axis at a preset speed, the unwinding shaft 1 is controlled to rotate circumferentially around its own axis at a preset speed.

[0065] The following takes the example of winding a plurality of sheets 101 outside the inner winding layer to form a sandwich sheet layer as an example to specifically introduce the specific winding process using the above-mentioned winding device.

[0066] S10, connecting multiple sheets 101 in sequence to form a rolling curtain type material strip 100, and winding the material strip 100 using a winding tool;

[0067] S20, transferring the unwinding shaft 1 wound with the material tape 100 to the winding station through the hoisting structure;

[0068] S30, after the mold shaft 2 wrapped with the inner winding layer passes through the binding belt 3, it is installed on a mold bracket and connected to the mold drive unit;

[0069] S40, controlling the lifting bracket 5 to move up and down by the hoisting structure to preliminarily tighten the binding belt 3;

[0070] S50, controlling the corresponding binding belt 3 to rise and fall by the lifting drive unit, and further tightening each binding belt 3;

[0071] S60. Stick and fix one end of the material tape 100 on the unwinding shaft 1 in step S20 to the outside of the inner winding layer outside the mold shaft 2, control the mold driving unit to drive the mold shaft 2 to rotate, and slowly wind the material tape 100 around the outside of the inner winding layer according to the rotation of the mold shaft 2 to form a sandwich material layer.

[0072] It should be noted that in step S60, the material strip 100 is spread along the circumference of the mold shaft 2 with the help of the binding belt 3 to form a sandwich material layer. The number of sandwich material layers can be more than one.

[0073] Furthermore, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. Winding device, including: An unwinding shaft (1), wherein the unwinding shaft (1) is capable of rotating circumferentially around its own axis; A mold shaft (2), the mold shaft (2) being capable of rotating circumferentially around its own axis to wind the material strip (100) on the unwinding shaft (1) around the outside of the mold shaft (2); It is characterized by further comprising: A binding belt (3), wherein the mold shaft (2) passes through the binding belt (3); a binding belt bracket (4), the binding belt bracket (4) being capable of being raised and lowered and being connected to the binding belt (3); The binding belt bracket (4) is provided with a roller (6) capable of rotating circumferentially around its own axis; the binding belt (3) passes around the roller (6) and the mold shaft (2) and forms a pulley structure with the mold shaft (2) and the roller (6); the unwinding shaft (1) passes through the binding belt (3).

2. The winding device according to claim 1, characterized in that At least two binding belts (3) are provided, and the at least two binding belts (3) are distributed at intervals along the axial direction of the mold shaft (2).

3. The winding device according to claim 2, characterized in that The binding belt bracket (4) and the binding belt (3) are arranged in a one-to-one correspondence.

4. The winding device according to claim 3, characterized in that Also includes: A lifting bracket (5), wherein the lifting bracket (5) is capable of being raised and lowered; A lifting drive unit, wherein the lifting drive unit is capable of causing the strap bracket (4) to rise and fall relative to the lifting bracket (5).

5. The winding device according to claim 4, characterized in that Also includes: An unwinding bracket (7), wherein the unwinding shaft (1) is connected to the unwinding bracket (7) and is capable of rotating circumferentially around its own axis relative to the unwinding bracket (7), and the unwinding bracket (7) is connected to the lifting bracket (5).

6. A winding method, characterized in that The winding device according to any one of claims 1 to 5 comprises the following steps: Controlling the lifting and lowering of the binding strap bracket (4) to tighten the binding strap (3); Fixing one end of the material strip (100) on the unwinding shaft (1) to the outside of the mold shaft (2); The mold shaft (2) is controlled to rotate circumferentially around its own axial direction at a preset speed, so as to wind the material strip (100) on the unwinding shaft (1) around the outside of the mold shaft (2).

7. A device for preparing a tubular composite material, characterized in that: The winding device comprises the winding device according to any one of claims 1 to 5.

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