Double-cavity high-pressure self-sealing gum dipping tool and pultrusion equipment for wind power demolding-free cloth girder plate
By using dual-chamber high-pressure self-sealing impregnation tooling in the production of large beams and plates of wind power mold-free cloth, the problem that low-pressure impregnation method cannot reduce porosity is solved, and higher product performance and quality are achieved.
Patent Information
- Application Number
- CN202421882746.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-06
AI Technical Summary
In the prior art, when producing mold-free bracelet pultrusion plates, the low-pressure impregnation method cannot effectively reduce the porosity of the product, affecting the performance and quality of the product.
The wind power mold-free release cloth is used to achieve effective impregnation and porosity reduction of resin and reducing porosity through the design of high-pressure impregnation chamber and low-pressure prepreg chamber.
It effectively improves the impregnation effect of resin on fibers, reduces the porosity of the product, and thus improves the performance and quality of the product.
Smart Images
Figure CN223030413U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pultrusion of fiber reinforced composite materials, in particular to a double cavity high-pressure self-sealing impregnation tooling and pultrusion equipment for a wind power demoulding-free cloth girder plate. Background Technique
[0002] The pultrusion molding of composite materials is an excellent sustainable production process technology, which is mainly used for producing fiber reinforced composite products with equal cross-sections such as glass fiber and carbon fiber, and is widely used in the fields of wind turbine blades, automobile manufacturing, rail transit, energy-saving buildings, etc. Its advantages are high production efficiency, stable product quality, low cost, etc.
[0003] In the field of wind power, the use of pultruded girder plates has become the mainstream, which greatly improves the structural performance of the main beam of wind turbine blades and saves the production cost of the blades.
[0004] A layer of demoulding cloth is attached to the upper and lower surfaces of the traditional pultruded plate. Its main functions are to form a rough bonding surface, absorb the demoulding agent and protect the surface of the plate from pollution and damage. However, the use of two layers of demoulding cloth increases the costs of materials, production equipment and quality control. Therefore, the demoulding-free pultruded plate came into being. Since the demoulding cloth is no longer used, various problems brought by the use of the demoulding cloth in the traditional pultruded plate are solved.
[0005] At present, in the process of producing demoulding-free pultruded plates, fiber and other reinforcing materials are usually impregnated in an impregnation tank and then sent into a mold for curing and forming. Although this conventional low-pressure impregnation method has a simple process and high production efficiency, even through a preforming tooling, the porosity of the product cannot be reduced to an ideal state, and the porosity directly affects the performance of the pultruded plate such as fatigue and strength. Excessive porosity will seriously affect the performance and quality of the product.
[0006] It has become an urgent matter to solve the above problems. Content of the Utility Model
[0007] In order to solve the technical problem of poor performance of products produced by the low-pressure impregnation method, the utility model provides a double cavity high-pressure self-sealing impregnation tooling and pultrusion equipment for a wind power demoulding-free cloth girder plate.
[0008] Its technical solution is as follows:
[0009] The first aspect of the present application relates to a double - cavity high - pressure self - sealing impregnation tooling for wind power non - demolding cloth girder plates, including a tooling main body. In the tooling main body, there are a pre - forming seam, a low - pressure pre - impregnation cavity, a pressure - maintaining seam, a high - pressure impregnation cavity, and a curing and forming seam that are sequentially connected in the horizontal direction. One end of the pre - forming seam away from the low - pressure pre - impregnation cavity is a tooling inlet opened on the outer surface of the tooling main body, and one end of the curing and forming seam away from the high - pressure impregnation cavity is a tooling outlet opened on the outer surface of the tooling main body. A glue injection hole communicating the high - pressure impregnation cavity with the outside is opened on the tooling main body;
[0010] The pre - forming seam, the pressure - maintaining seam, and the curing and forming seam are all seam - like structures with a width in the horizontal direction greater than the thickness in the vertical direction. The inlet and outlet of the low - pressure pre - impregnation cavity are respectively the outlet of the pre - forming seam and the inlet of the pressure - maintaining seam, and the inlet and outlet of the high - pressure impregnation cavity are respectively the outlet of the pressure - maintaining seam and the inlet of the curing and forming seam. Both the low - pressure pre - impregnation cavity and the high - pressure impregnation cavity first gradually expand outward in the circumferential direction and then gradually contract in the circumferential direction from the inlet to the outlet direction.
[0011] The second aspect of the present application relates to a pultrusion device, including a glue injection assembly, a yarn feeding assembly, a traction machine, and the above - mentioned double - cavity high - pressure self - sealing impregnation tooling for wind power non - demolding cloth girder plates. The glue injection assembly includes a glue injection machine and a glue injection pipeline. The glue outlet of the glue injection machine is connected to the inlet of the glue injection hole through the glue injection pipeline. The yarn feeding assembly is arranged outside the tooling inlet, the traction machine is arranged outside the tooling outlet, and a heating assembly is arranged outside the tooling main body at a position corresponding to the curing and forming seam.
[0012] Using the above - mentioned double - cavity high - pressure self - sealing impregnation tooling for wind power non - demolding cloth girder plates and the pultrusion device, resin enters the high - pressure impregnation cavity through the glue injection hole. After the high - pressure impregnation cavity is filled with resin, due to the existence of the pressure difference, the excess resin will flow into the low - pressure pre - impregnation cavity through the pressure - maintaining seam, and initially infiltrate the fibers in the low - pressure pre - impregnation cavity, while forming a liquid seal surface, thus preventing a large amount of air from entering the high - pressure impregnation cavity. The strong convection state of the resin in the pressure - maintaining seam can also effectively push the tiny gas clusters entering with the fibers back to the low - pressure pre - impregnation cavity; Therefore, under the combined action of the initial infiltration and liquid seal of the low - pressure pre - impregnation cavity on the fibers, the strong convection state of the pressure - maintaining seam, and the high - pressure state of the high - pressure impregnation cavity, not only can the impregnation effect of the resin on the fibers be effectively improved, but also the porosity of the product can be effectively reduced, thereby improving the performance and quality of the product. Description of the Drawings
[0013] Figure 1 It is a schematic structural diagram of one perspective of the double - cavity high - pressure self - sealing impregnation tooling for wind power non - demolding cloth girder plates;
[0014] Figure 2 It is a schematic structural diagram of another perspective of the double - cavity high - pressure self - sealing impregnation tooling for wind power non - demolding cloth girder plates;
[0015] Figure 3 It is a schematic structural diagram of the lower mold of a double - cavity high - pressure self - sealing dipping tooling for wind power non - demolding cloth girder plates;
[0016] Figure 4 It is a vertical sectional view of a double - cavity high - pressure self - sealing dipping tooling for wind power non - demolding cloth girder plates;
[0017] Figure 5 It is a horizontal sectional view of a double - cavity high - pressure self - sealing dipping tooling for wind power non - demolding cloth girder plates;
[0018] Figure 6 It is a schematic diagram of the cooperation relationship among the glue - injecting component, the yarn - feeding component and the double - cavity high - pressure self - sealing dipping tooling for wind power non - demolding cloth girder plates;
[0019] Figure 7 It is a schematic structural diagram of the yarn - feeding component;
[0020] Figure 8 It is a schematic diagram of the cooperation relationship between the constant - temperature component and the double - cavity high - pressure self - sealing dipping tooling for wind power non - demolding cloth girder plates. Detailed implementation mode
[0021] The following further illustrates the present utility model in conjunction with the embodiments and the drawings.
[0022] Embodiment 1:
[0023] As Figures 1-5 shown, a double - cavity high - pressure self - sealing dipping tooling for wind power non - demolding cloth girder plates mainly includes a tooling main body 1. In the tooling main body 1, there are a pre - forming seam 1a, a low - pressure pre - impregnation cavity 1b, a pressure - maintaining seam 1c, a high - pressure dipping cavity 1d and a curing and forming seam 1e that are sequentially connected in the horizontal direction. Moreover, at both ends of the tooling main body 1 in the horizontal direction, a tooling inlet 1f and a tooling outlet 1g are respectively opened. One end of the pre - forming seam 1a far from the low - pressure pre - impregnation cavity 1b is the tooling inlet 1f opened on the outer surface of the tooling main body 1, and one end of the curing and forming seam 1e far from the high - pressure dipping cavity 1d is the tooling outlet 1g opened on the outer surface of the tooling main body 1.
[0024] Therefore, the pre - forming seam 1a, the low - pressure pre - impregnation cavity 1b, the pressure - maintaining seam 1c, the high - pressure dipping cavity 1d and the curing and forming seam 1e are not only sequentially connected in the horizontal direction, but also penetrate the tooling main body 1 in the horizontal direction, thus forming a feeding channel. The inlet of this feeding channel is the tooling inlet 1f, and the outlet of this feeding channel is the tooling outlet 1g.
[0025] Moreover, a glue - injecting hole 1h communicating the high - pressure dipping cavity 1d with the outside is opened on the tooling main body 1, so that resin can be filled into the high - pressure dipping cavity 1d through the glue - injecting hole 1h.
[0026] Please refer to Figures 3-5, the preforming seam 1a, the pressure-holding seam 1c, and the curing and forming seam 1e are all seam-like structures with a width in the horizontal direction greater than the thickness in the vertical direction, and the preforming seam 1a, the pressure-holding seam 1c, and the curing and forming seam 1e are adapted to the structure after fiber preforming.
[0027] The inlet and outlet of the low-pressure impregnation cavity 1b are respectively the outlet of the preforming seam 1a and the inlet of the pressure-holding seam 1c, and the inlet and outlet of the high-pressure impregnation cavity 1d are respectively the outlet of the pressure-holding seam 1c and the inlet of the curing and forming seam 1e. Both the low-pressure impregnation cavity 1b and the high-pressure impregnation cavity 1d first gradually expand outward in the circumferential direction and then gradually retract in the circumferential direction from the inlet to the outlet direction. That is: the top, bottom, and both sides of the low-pressure impregnation cavity 1b gradually expand outward in the direction away from the preforming seam 1a and then gradually retract inward; similarly, the top, bottom, and both sides of the high-pressure impregnation cavity 1d gradually expand outward in the direction away from the pressure-holding seam 1c and then gradually retract inward.
[0028] Therefore, after the resin enters the high-pressure impregnation cavity 1d through the injection hole 1h, under the action of the pressure difference and resin viscous force in the high-pressure impregnation cavity 1d, it flows in the high-pressure impregnation cavity 1d and presents a complex flow situation under various conditions, but its macroscopic flow trend is divided into: under the action of the viscous force, it flows in the direction of following the fiber movement direction towards the curing and forming seam 1e; under the action of the pressure difference, it flows from the high-pressure position to the low-pressure position. After the high-pressure impregnation cavity 1d is filled with resin, due to the existence of the pressure difference, the excess resin will flow through the pressure-holding seam 1c into the low-pressure impregnation cavity 1b and initially impregnate the fibers in the low-pressure impregnation cavity 1b, and at the same time form a Figure 4 liquid cover surface as described above. Due to the existence of the liquid cover surface, a large amount of air can be prevented from entering the high-pressure impregnation cavity 1d, and moreover, the strong convection state of the resin in the pressure-holding seam 1c can also effectively push the tiny gas clusters entering with the fibers back to the low-pressure impregnation cavity 1b.
[0029] Therefore, under the combined action of the initial impregnation and liquid sealing of the fibers by the low-pressure impregnation cavity 1b, the strong convection state of the pressure-holding seam 1c, and the high-pressure state of the high-pressure impregnation cavity 1d, not only can the impregnation effect of the resin on the fibers be effectively improved, but also the porosity of the product can be effectively reduced, thereby improving the performance and quality of the product.
[0030] The low-pressure pre-impregnation cavity 1b is composed of a low-pressure cavity expanding section 1b1 and a low-pressure cavity contracting section 1b2 from the inlet to the outlet direction. The length of the low-pressure cavity expanding section 1b1 is less than that of the low-pressure cavity contracting section 1b2. The high-pressure impregnation cavity 1d is composed of a high-pressure cavity expanding section 1d1 and a high-pressure cavity contracting section 1d2 from the inlet to the outlet direction. The length of the high-pressure cavity expanding section 1d1 is less than that of the high-pressure cavity contracting section 1d2. The low-pressure cavity expanding section 1b1, the low-pressure cavity contracting section 1b2, the high-pressure cavity expanding section 1d1, and the high-pressure cavity contracting section 1d2 are all similar to a frustum structure. The lengths of the low-pressure cavity contracting section 1b2 and the high-pressure cavity contracting section 1d2 are longer, which can not only make the fiber impregnation more sufficient, but also help to form a liquid cover surface in the low-pressure cavity contracting section 1b2, thereby reducing the air content in the fiber after impregnation and lowering the porosity of the product.
[0031] Furthermore, the outlet of the glue injection hole 1h is opened on the top wall of the high-pressure impregnation cavity 1d and is located at the junction of the high-pressure cavity expanding section 1d1 and the high-pressure cavity contracting section 1d2, so as to improve the fluidity of the resin in the high-pressure impregnation cavity 1d.
[0032] In the structural design of the preforming seam 1a, the low-pressure pre-impregnation cavity 1b, the pressure-holding seam 1c, the high-pressure impregnation cavity 1d, and the curing and forming seam 1e, the impregnated fiber is cured into a product in the curing and forming seam 1e. Therefore, the preforming seam 1a and the pressure-holding seam 1c have a greater impact on the fiber arrangement. So, in their respective scaling designs, they need to follow the rule of unidirectional symmetry, and the width is generally equal to that of the curing and forming seam 1e, that is: W A = W C = W E , in terms of height design, the preforming seam 1a is 0.95 to 1.5 times that of the curing and forming seam 1e, that is: 0.95H E ≤ H A ≤ 1.5H E , the pressure-holding seam 1c controls the size of the high-pressure impregnation cavity 1d through its different ratios with the curing and forming seam 1e, and the general value is 1.05 to 1.5 times, that is: 1.05H E ≤ H C ≤ 1.5H E ; among them, the width of the preforming seam 1a in the horizontal direction is W A and the thickness in the vertical direction is H A , the width of the pressure-holding seam 1c in the horizontal direction is W C and the thickness in the vertical direction is H C , the width of the curing and forming seam 1e in the horizontal direction is W E and the thickness in the vertical direction is H E .
[0033] The width of the preforming seam 1a in the horizontal direction is W A and the thickness in the vertical direction is HA The width of the pressure-holding seam 1c in the horizontal direction is W C and the thickness in the vertical direction is H C The width of the curing and forming seam 1e in the horizontal direction is W E and the thickness in the vertical direction is H E The pre-forming seam 1a, the pressure-holding seam 1c, and the curing and forming seam 1e satisfy: W A = W C = W E 0.95H E ≤ H A ≤ 1.5H E 1.05H E ≤ H C ≤ 1.5H E ;
[0034] The low-pressure pre-impregnation chamber 1b and the high-pressure impregnation chamber 1d need to ensure good fluidity of the resin in the chambers. Therefore, the designed widths and heights of these two chambers need to be larger than the dimensions of the curing and forming seam 1e. Specifically, the low-pressure pre-impregnation chamber 1b, the high-pressure impregnation chamber 1d, and the curing and forming seam 1e satisfy: 1.5V b ≤ V B ≤ 3.5V b 1.5V d ≤ V D ≤ 3.5V d W E + 0.5(H B - H E ) ≤ W B ≤ W E +(H B - H E ),W E + 0.5(H D - H E ) ≤ W D ≤ W E +(H D - H E ),1.5H E ≤ H B ≤ 3.5H E 1.5H E ≤ H D ≤ 3.5H E . Wherein, the volume of the low-pressure pre-impregnation chamber 1b is V B the maximum width in the horizontal direction is W B and the maximum thickness in the vertical direction is H B the volume of the high-pressure impregnation chamber 1d is V D the maximum width in the horizontal direction is W D and the maximum thickness in the vertical direction is H D, the volume of the curing and forming seam 1e corresponding to the length of the low-pressure prepreg cavity 1b is V b , the volume of the curing and forming seam 1e corresponding to the length of the high-pressure impregnation cavity 1d is V d .
[0035] In this embodiment, the tooling main body 1 is composed of an upper mold and a lower mold. The preforming seam 1a, the low-pressure prepreg cavity 1b, the pressure-holding seam 1c, the high-pressure impregnation cavity 1d, and the curing and forming seam 1e are all formed at the joint position of the upper mold and the lower mold, which is convenient for processing.
[0036] The working principle of the double-cavity high-pressure self-sealing impregnation tooling for wind power non-demolding fabric girders is as follows:
[0037] 1. Fibers enter from the tooling inlet 1f, are pre-wetted with resin in the low-pressure prepreg cavity 1b first, are fully wetted with resin in the high-pressure impregnation cavity 1d, and are finally heated in the curing and forming seam 1e. After the resin is heated and reacts to cure, a product is formed.
[0038] 2. A liquid surface will be formed in the low-pressure prepreg cavity 1b. The position of this liquid surface is not fixed and will move in the length direction of the low-pressure prepreg cavity 1b according to the injection amount of glue and the pressure in the cavity.
[0039] 3. In the pressure-holding seam 1c, the fibers move towards the high-pressure impregnation cavity 1d. The resin on the fiber surface will move towards the high-pressure impregnation cavity 1d following the fibers under the action of viscous force; the resin away from the fiber surface flows from the high-pressure impregnation cavity 1d with high pressure to the low-pressure prepreg cavity 1b with low pressure under the action of pressure difference, that is, the resin flow state presents a strong convection form.
[0040] Therefore, by designing the size of the pressure-holding seam 1c, the internal pressure of the high-pressure impregnation cavity 1d can be controlled to a certain extent. A section of the pressure-holding seam 1c close to the high-pressure impregnation cavity 1d is in a full state, maintaining a relatively high internal pressure, and the pressure can only be released towards the direction close to the low-pressure prepreg cavity 1b. When the fiber volume is constant and the resin injection amount is stable, the larger the cross-sectional area of the pressure-holding seam 1c, the larger the resin flow space, the more pressure is released, and the pressure in the high-pressure impregnation cavity 1d decreases; conversely, the smaller the cross-sectional area of the pressure-holding seam 1c, the greater the pressure in the high-pressure impregnation cavity 1d.
[0041] 4. In the high-pressure impregnation chamber 1d, resin is continuously injected into the chamber from the injection hole 1h by the injection component 2 and the high-pressure impregnation chamber 1d is kept filled with resin. In the high-pressure impregnation chamber 1d, part of the resin moves along with the fiber towards the direction close to the curing and forming seam 1e under the action of viscous force. In the cross-section of the injection hole area, the cross-section of the high-pressure impregnation chamber 1d is one full circle larger than the cross-section of the fiber bundle, so there is also a circumferential flow of resin at this position (flowing along the outer surface of the fiber bundle from the position of the injection hole 1h). The excessive resin flows towards the pressure-holding seam 1c under the action of pressure.
[0042] 5. The fiber and resin enter the curing and forming seam 1e. Under high-temperature conditions, the resin rapidly reacts, changes from liquid state to solid state, and becomes the product after combining with the fiber.
[0043] Embodiment 2:
[0044] Please refer to Figures 1-8 , a pultrusion device, including an injection component 2, a fiber feeding component 5, a tractor 6 and the wind power demoulding-free cloth girder plate double-chamber high-pressure self-sealing impregnation tooling of Embodiment 1. The injection component 2 includes an injection machine 2a and an injection pipeline 2b. The glue outlet of the injection machine 2a is communicated with the inlet of the injection hole 1h through the injection pipeline 2b. Among them, the fiber feeding component 5 is arranged outside the tooling inlet 1f for feeding the fiber into the tooling inlet 1f, and the tractor 6 is arranged outside the tooling outlet 1g for keeping the fiber and the product moving from the tooling inlet 1f to the tooling outlet 1g. A heating component is arranged at the position corresponding to the curing and forming seam 1e outside the tooling main body 1 for curing the fiber fully impregnated in the curing and forming seam 1e into the product.
[0045] Please refer to Figure 1 and Figure 2 , the heating component is composed of multiple heating plates 4 covering the outside of the tooling main body 1. Each heating plate 4 corresponds to the position of the curing and forming seam 1e, so as to be able to heat the position of the curing and forming seam 1e of the tooling main body 1 and cure the fiber fully impregnated inside into the product.
[0046] Specifically, the tooling main body 1 is of a cuboid structure, and the heating plate 4 is of an "L" shape. There are two rows of heating plates 4 arranged along the length direction of the tooling main body 1. One row of heating plates 4 covers two of the side walls in the circumferential direction of the tooling main body 1, and the other row of heating plates 4 covers the other two side walls in the circumferential direction of the tooling main body 1. Through such a design, each heating plate 4 can fully cover the position corresponding to the curing and forming seam 1e outside the tooling main body 1, ensuring the curing effect and efficiency.
[0047] Please refer to Figure 6 and Figure 7, the yarn feeding assembly 5 includes a yarn rack 5a, and a yarn guide plate 5b, a preforming orifice plate 5c, a first preforming slot plate 5d, and a second preforming slot plate 5e that are sequentially arranged between the yarn rack 5a and the tooling inlet 1f. The yarn guide plate 5b is provided with first yarn guide holes 5b1 distributed in a rectangular array. The preforming orifice plate 5c is provided with second yarn guide holes 5c1 distributed in a rectangular array. In this embodiment, the number and distribution pattern of the first yarn guide holes 5b1 and the second yarn guide holes 5c1 are preferably the same (the number and distribution pattern of the first yarn guide holes 5b1 and the second yarn guide holes 5c1 can also be different. For example, when the number of the second yarn guide holes 5c1 is less than that of the first yarn guide holes 5b1), and the distance between adjacent first yarn guide holes 5b1 is greater than the distance between adjacent second yarn guide holes 5c1. The first preforming slot plate 5d is provided with a plurality of first strip-shaped slots 5d1 evenly distributed from top to bottom. Each first strip-shaped slot 5d1 extends in the horizontal direction, and the number of the first strip-shaped slots 5d1 is less than or equal to the number of rows of the second yarn guide holes 5c1. The second preforming slot plate 5e is provided with a plurality of second strip-shaped slots 5e1 evenly distributed from top to bottom. Each second strip-shaped slot 5e1 extends in the horizontal direction, and the number of the second strip-shaped slots 5e1 is less than the number of the first strip-shaped slots 5d1. In the same row of the second yarn guide holes 5c1, the distance between the two second yarn guide holes 5c1 at both ends is equal to the width of the preforming slot 1a in the horizontal direction. The lengths of the first strip-shaped slots 5d1 and the second strip-shaped slots 5e1 are both equal to the width of the preforming slot 1a in the horizontal direction.
[0048] Therefore, the fibers are led out from the yarn rack 5a and pass through the respective first yarn guide holes 5b1 of the yarn guide plate 5b one by one, so as to realize the regular arrangement of the fibers; then they pass through the respective second yarn guide holes 5c1 of the preforming orifice plate 5c one by one. Among them, the aperture of the second yarn guide holes 5c1 is smaller than that of the first yarn guide holes 5b1, and the distance between adjacent second yarn guide holes 5c1 is smaller than the distance between adjacent first yarn guide holes 5b1, so as to achieve the effect of bunching and gather the overly dispersed fibers; then, the fibers passing through the second yarn guide holes 5c1 in multiple rows are gathered in the respective first strip-shaped slots 5d1 of the first preforming slot plate 5d, and the fibers passing through the respective first strip-shaped slots 5d1 are gathered in the respective second strip-shaped slots 5e1 of the second preforming slot plate 5e to achieve further bunching; finally, all the fibers passing through the second strip-shaped slots 5e1 are gathered and inserted into the preforming slot 1a, realizing the preforming of the fibers.
[0049] Please refer to Figure 8, the pultrusion device further includes a constant temperature component 3. A plurality of through water passing holes 1i are formed in the tooling main body 1 corresponding to the positions of the low-pressure pre-impregnation cavity 1b, the pressure maintaining seam 1c, and the high-pressure impregnation cavity 1d. The constant temperature component 3 includes a constant temperature water tank 3a. The constant temperature water tank 3a and each water passing hole 1i form a circulation loop through a circulation pipeline 3b. A water pump is integrated in the constant temperature water tank 3a, so that the constant temperature water tank 3a can pump constant temperature hot water into the circulation loop to keep the tooling main body 1 in a constant temperature state. The constant temperature water flow continuously circulates in each water passing hole 1i, which can keep the temperature of the tooling 1 constant, thereby effectively controlling the fluidity and pre-reaction degree of the resin.
[0050] Further, the water passing holes 1i are symmetrically distributed on the upper and lower sides of the low-pressure pre-impregnation cavity 1b, the pressure maintaining seam 1c, and the high-pressure impregnation cavity 1d, so as to improve the constant temperature effect at the positions of the low-pressure pre-impregnation cavity 1b, the pressure maintaining seam 1c, and the high-pressure impregnation cavity 1d.
[0051] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.
Claims
1. A wind power stripping cloth-free beam plate double-cavity high-pressure self-sealing glue-impregnating tooling, comprising a tooling body (1), characterized in that: The tooling body (1) is provided with a preforming seam (1a), a low-pressure prepreg cavity (1b), a pressure-maintaining seam (1c), a high-pressure impregnation cavity (1d) and a curing forming seam (1e) which are sequentially connected in a horizontal direction; the end of the preforming seam (1a) away from the low-pressure prepreg cavity (1b) is a tooling inlet (1f) provided on the outer surface of the tooling body (1); the end of the curing forming seam (1e) away from the high-pressure impregnation cavity (1d) is a tooling outlet (1g) provided on the outer surface of the tooling body (1); and the tooling body (1) is provided with a glue injection hole (1h) which is connected to the high-pressure impregnation cavity (1d) and the outside world; The preforming seam (1a), the pressure-retaining seam (1c) and the curing forming seam (1e) are all seam-like structures whose horizontal width is greater than their vertical thickness; the inlet and outlet of the low-pressure prepreg cavity (1b) are respectively the outlet of the preforming seam (1a) and the inlet of the pressure-retaining seam (1c); the inlet and outlet of the high-pressure impregnation cavity (1d) are respectively the outlet of the pressure-retaining seam (1c) and the inlet of the curing forming seam (1e); and both the low-pressure prepreg cavity (1b) and the high-pressure impregnation cavity (1d) gradually expand outward in the circumferential direction from the inlet to the outlet, and then gradually shrink in the circumferential direction.
2. The double-cavity high-pressure self-sealing glue-impregnated tooling for wind power mold-free cloth beam plate according to claim 1 is characterized by: The low-pressure prepreg chamber (1b) is composed of a low-pressure chamber expansion section (1b1) and a low-pressure chamber reduction section (1b2) from the inlet to the outlet, and the length of the low-pressure chamber expansion section (1b1) is less than the length of the low-pressure chamber reduction section (1b2). The high-pressure impregnation chamber (1d) is composed of a high-pressure chamber expansion section (1d1) and a high-pressure chamber reduction section (1d2) from the inlet to the outlet, and the length of the high-pressure chamber expansion section (1d1) is less than the length of the high-pressure chamber reduction section (1d2).
3. The double-cavity high-pressure self-sealing glue-impregnated tooling for wind power mold-free cloth beam plate according to claim 1 or 2, characterized in that: The width of the preformed seam (1a) in the horizontal direction is W A , the thickness in the vertical direction is H A The width of the pressure-maintaining seam (1c) in the horizontal direction is W C , the thickness in the vertical direction is H C The width of the curing molding seam (1e) in the horizontal direction is W E , the thickness in the vertical direction is H E The preforming seam (1a), the pressure-maintaining seam (1c) and the curing forming seam (1e) satisfy: W A =W C =W E , 0.95H E ≤H A ≤1.5H E , 1.05H E ≤H C ≤1.5H E ; The volume of the low-pressure prepreg chamber (1b) is V B , the maximum width in the horizontal direction is W B , the maximum thickness in the vertical direction is H B The volume of the high pressure dipping chamber (1d) is V D , the maximum width in the horizontal direction is W D , the maximum thickness in the vertical direction is H D The volume of the curing and forming seam (1e) corresponding to the length of the low-pressure prepreg cavity (1b) is V b The volume of the curing molding seam (1e) corresponding to the length of the high-pressure impregnation cavity (1d) is V d The low-pressure prepreg cavity (1b), the high-pressure impregnation cavity (1d) and the curing molding seam (1e) meet the following requirements: 1.5V b ≤V B ≤3.5V b , 1.5V d ≤V D ≤3.5V d , W E +0.5(H B -H E )≤W B ≤W E +(H B -H E ), W E +0.5(H D -H E )≤W D ≤W E +(H D -H E ), 1.5H E ≤H B ≤3.5H E , 1.5H E ≤H D ≤3.5H E .
4. The double-cavity high-pressure self-sealing glue-impregnating tooling for wind power demoulding-free cloth beam plate according to claim 2 is characterized by: The outlet of the glue injection hole (1h) is opened on the top wall of the high-pressure glue dipping chamber (1d) and is located at the junction of the high-pressure chamber diameter expansion section (1d1) and the high-pressure chamber diameter reduction section (1d2).
5. A pultrusion device, characterized in that: It comprises a glue injection component (2), a yarn feeding component (5), a traction machine (6) and a double-cavity high-pressure self-sealing glue dipping tooling for a wind power demoulding-free cloth beam plate as described in any one of claims 1 to 4, wherein the glue injection component (2) comprises a glue injection machine (2a) and a glue injection pipeline (2b), the glue outlet of the glue injection machine (2a) is connected to the inlet of the glue injection hole (1h) through the glue injection pipeline (2b), the yarn feeding component (5) is arranged outside the tooling inlet (1f), the traction machine (6) is arranged outside the tooling outlet (1g), and a heating component is arranged outside the tooling body (1) at a position corresponding to the curing molding seam (1e).
6. The pultrusion equipment according to claim 5, characterized in that: It also comprises a thermostatic component (3), wherein a plurality of penetrating water through holes (1i) are provided on the tool body (1) at positions corresponding to the low-pressure prepreg chamber (1b), the pressure-maintaining seam (1c) and the high-pressure impregnation chamber (1d), and the thermostatic component (3) comprises a thermostatic water tank (3a), and the thermostatic water tank (3a) forms a circulation loop with the water through holes (1i) via a circulation pipeline (3b), and the thermostatic water tank (3a) is capable of pumping constant-temperature hot water into the circulation loop.
7. The pultrusion equipment according to claim 6, characterized in that: The water-through holes (1i) are symmetrically distributed on the upper and lower sides of the low-pressure prepreg chamber (1b), the pressure-maintaining seam (1c) and the high-pressure impregnation chamber (1d).
8. The pultrusion equipment according to claim 5, characterized in that: The heating assembly is composed of a plurality of heating plates (4) covering the outside of the tooling body (1), and each heating plate (4) corresponds to the position of the curing molding seam (1e).
9. The pultrusion equipment according to claim 8, characterized in that: The tooling body (1) is a rectangular parallelepiped structure, and the heating plates (4) are L-shaped structures. Two rows of heating plates (4) are arranged along the length direction of the tooling body (1), one row of heating plates (4) covers one of the two side walls of the tooling body (1) in the circumferential direction, and the other row of heating plates (4) covers the other two side walls of the tooling body (1) in the circumferential direction.
10. The pultrusion equipment according to claim 5, characterized in that: The yarn feeding assembly (5) comprises a yarn rack (5a), a yarn guide plate (5b), a preformed hole plate (5c), a first preformed seam plate (5d) and a second preformed seam plate (5e) which are sequentially arranged between the yarn rack (5a) and the tooling inlet (1f); the yarn guide plate (5b) is provided with first yarn guide holes (5b1) distributed in a rectangular array; the preformed hole plate (5c) is provided with second yarn guide holes (5c1) distributed in a rectangular array; the number and distribution pattern of the first yarn guide holes (5b1) and the second yarn guide holes (5c1) are the same, and the spacing between adjacent first yarn guide holes (5b1) is greater than the spacing between adjacent second yarn guide holes (5c1); the first preformed seam plate (5d) is provided with a plurality of first strips uniformly distributed from top to bottom; The second preformed seam plate (5e) is provided with a plurality of second strip-shaped seams (5e1) evenly distributed from top to bottom, each of the second strip-shaped seams (5e1) extending in the horizontal direction, and the number of the second strip-shaped seams (5e1) is less than the number of the first strip-shaped seams (5d1), each of the first strip-shaped seams (5d1) extending in the horizontal direction, and the number of the second strip-shaped seams (5e1) is less than the number of the first strip-shaped seams (5d1), and in the second yarn guide holes (5c1) in the same row, the spacing between the two second yarn guide holes (5c1) at the two ends is equal to the width of the preformed seam (1a) in the horizontal direction, and the lengths of the first strip-shaped seam (5d1) and the second strip-shaped seam (5e1) are equal to the width of the preformed seam (1a) in the horizontal direction.