Blade manufacturing mold and control method thereof

Abstract

The invention provides a blade manufacturing mold and a control method thereof.The blade manufacturing mold comprises a mold body, a pressure sensor, a vacuum device, a filling device and a control device, a forming cavity is formed in the mold body, and at least one row of pressure detection points communicated with the forming cavity are arranged on the mold body; each column of pressure detection points comprises a plurality of pressure detection points which are arranged at intervals in the length direction of the mold main body; a pressure sensor is arranged at each pressure detection point; the control device is electrically connected with the pressure sensor, the vacuum device and the filling device and used for controlling the vacuum device and the filling device to fill the mold body according to the pressure value detected by the pressure sensor. The control device can analyze whether the vacuum environment in the mold main body is qualified or not according to the pressure sensor, and the vacuum device and the filling device are sequentially started for filling operation only when the vacuum environment is qualified, so that the problem that manual misjudgment occurs or filling is mistaken when vacuum is not started is avoided.

Description

Technical Field

[0001] This invention relates to the field of wind power generation equipment technology, and in particular to a blade manufacturing mold and its control method. Background Technology

[0002] In the manufacturing process of large composite material shells for wind turbine blades (hereinafter referred to as "blades"), the Vacuum Infusion Process (VIP) is a key step that determines the mechanical properties, fatigue life, and quality consistency of the blades. This process involves first placing fiberglass fabric, core material, and other layup materials in a sealed mold, extracting and maintaining a specified vacuum level, and then injecting an epoxy resin system under pressure to eliminate air bubbles, reduce porosity, and ensure thorough fiber impregnation.

[0003] The current industry practice is to install pressure gauges at key locations on the blade root corresponding to the mold. By monitoring the pressure drop at these key locations within the rated holding time, on-site operators manually determine whether the vacuum environment inside the mold is up to standard. If it is deemed acceptable, the operator manually activates the vacuum equipment and begins resin infusion. However, this process relies entirely on manual judgment and operation, making it highly susceptible to errors such as operator misjudgment or infusion without activating the vacuum, leading to blade quality defects or even scrapping. Summary of the Invention

[0004] The purpose of this invention is to provide a blade manufacturing mold and its control method, which aims to solve the problems of human error or injection without opening a vacuum during the existing wind turbine blade manufacturing process.

[0005] To solve the above-mentioned technical problems, embodiments of the present invention provide a blade manufacturing mold, comprising:

[0006] The mold body has a molding cavity for casting and molding blades. The mold body has at least one row of pressure detection points connected to the molding cavity. Each row of pressure detection points includes a plurality of pressure detection points arranged at intervals along the length of the mold body.

[0007] A pressure sensor is provided at each of the pressure detection points;

[0008] A vacuum device, which is connected to the molding cavity;

[0009] Injection device, the injection device being connected to the molding cavity;

[0010] A control device is electrically connected to the pressure sensor, the vacuum device, and the injection device. The control device is used to control the vacuum device and the injection device to inject the mold body according to the pressure value detected by the pressure sensor.

[0011] In some embodiments, the distance between two adjacent pressure detection points in each column is 15m to 20m.

[0012] In some embodiments, the two rows of pressure detection points are respectively disposed at both ends of the mold body in the width direction of the mold body.

[0013] In some embodiments, the blade manufacturing mold further includes a vacuum line, the vacuum line comprising:

[0014] The main tube extends along the length of the mold body, and the vacuum device is provided on the main tube.

[0015] The first branch pipe extends along the width direction of the mold body, and multiple first branch pipes are spaced apart along the length direction of the mold body. The two ends of each first branch pipe are respectively connected to the main pipe and the molding cavity.

[0016] In some embodiments, the vacuum pipeline further includes a second branch pipe extending along the width direction of the mold body, and multiple second branch pipes are spaced apart along the length direction of the mold body. Each second branch pipe is connected to the main pipe and a pressure detection point at both ends, and a pressure sensor is provided on each second branch pipe.

[0017] In some embodiments, a plurality of vacuum devices are provided at intervals along the length of the mold body on the main tube.

[0018] In some embodiments, the first branch pipe is disposed between any two adjacent second branch pipes.

[0019] In some embodiments, when the vacuum device and the injection device inject the molding cavity, the control device is used to determine the location of air leakage in the mold body based on the pressure value detected by the pressure sensor.

[0020] In some embodiments, the blade manufacturing mold further includes a display device electrically connected to the control device.

[0021] To achieve the above objectives, the present invention also provides a method for controlling the aforementioned blade manufacturing mold, comprising:

[0022] After the vacuum device is started for a first preset time, the vacuum device is turned off to maintain pressure on the mold body;

[0023] Obtain the pressure values ​​detected by all pressure sensors;

[0024] If the pressure value detected by each pressure sensor is less than the first preset pressure threshold and / or the change in pressure value detected by each pressure sensor within a second preset time period is less than the second preset pressure threshold, then the vacuum device and the injection device are activated to inject the mold body.

[0025] In some embodiments, after activating the vacuum device and the injection device to inject the mold body if the pressure value detected by each of the pressure sensors is less than a first preset pressure threshold and / or the change in pressure value detected by each of the pressure sensors is less than the second preset pressure threshold within a second preset time period, the method further includes:

[0026] Obtain the pressure values ​​detected by all the pressure sensors;

[0027] Select the pressure sensor with the largest detected pressure value from all the pressure sensors as the target pressure sensor;

[0028] If the pressure value detected by the target pressure sensor is less than a third preset pressure threshold and / or the change in the pressure value detected by the target pressure sensor within a third preset time period is less than a fourth preset pressure threshold, then the encoded information and / or position information of the target pressure sensor are output.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The blade manufacturing mold of the present invention has multiple pressure sensors arranged along the length direction on the mold body. The control device can analyze whether the vacuum environment inside the mold body is qualified according to the pressure sensors. Only when the vacuum environment is qualified will the vacuum device and the injection device be started in sequence to perform the injection operation, thereby avoiding the problem of human misjudgment or injection without opening the vacuum. Attached Figure Description

[0031] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0032] Figure 1 This is a schematic diagram of the blade manufacturing mold in an embodiment of the present invention;

[0033] Figure 2 for Figure 1 Working principle diagram of the mold for manufacturing intermediate blades;

[0034] Figure 3 This is a flowchart of the control method for the blade manufacturing mold in an embodiment of the present invention.

[0035] Explanation of reference numerals in the accompanying drawings of this invention:

[0036] Blade manufacturing mold 100, mold body 1, pressure detection point 11, pressure sensor 2, vacuum device 3, vacuum pipeline 4, main pipe 41, first branch pipe 42a, second branch pipe 42b, filling device 5, control device 6, display device 7.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] As the background technology shows, existing blade manufacturing mold assembly processes are often cumbersome and lack systematic optimization. For example, the installation sequence of components may not be carefully designed, leading to repeated adjustments of the positions of already installed parts during assembly to accommodate the installation requirements of subsequent parts. This not only wastes a lot of time but also easily introduces human error, reducing assembly accuracy. Moreover, traditional assembly processes rely on relatively simple tools and fixtures, lacking dedicated and efficient tools for different assembly steps, making operation inconvenient and difficult to ensure consistency.

[0039] This invention, through in-depth analysis of the structure and function of blade manufacturing molds, modularizes the blade manufacturing molds, dividing them into multiple modules such as the first module and the second module. This allows for the independent pre-assembly of each module before assembling them together, thus fully utilizing the functions of different assembly stations and enabling parallel assembly work. This significantly shortens the overall assembly time, improves assembly efficiency, and facilitates quality control and problem-solving by assembling each module in a relatively independent environment, ensuring precision and quality during the assembly process.

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0043] This invention provides a blade manufacturing mold that can be used in the manufacturing process of wind turbine blades. Figure 1 and Figure 2 A preferred embodiment of the blade manufacturing mold provided by the present invention is shown.

[0044] Please see Figure 1 and Figure 2 In this embodiment, the blade manufacturing mold 100 includes a mold body 1, a pressure sensor 2, a vacuum device 3, a filling device 5, and a control device 6. The mold body 1 is provided with a molding cavity (not shown in the figure), which is used for the filling and molding of the blade. The mold body 1 is provided with at least one row of pressure detection points 11 connected to the molding cavity. Each row of pressure detection points 11 includes multiple pressure detection points 11 spaced apart along the length direction of the mold body 1. A pressure sensor 2 is provided at each pressure detection point 11. The vacuum device 3 is connected to the molding cavity. The filling device 5 is connected to the molding cavity. The control device 6 is electrically connected to the pressure sensor 2, the vacuum device 3, and the filling device 5. The control device 6 is used to control the vacuum device 3 and the filling device 5 to fill the mold body 1 according to the pressure value detected by the pressure sensor 2.

[0045] Specifically, the mold body 1 is mainly used to manufacture wind turbine blades. The mold body 1 has an internal molding cavity for infusion molding of the blades. The mold body 1 has a vacuum port and an infusion port connected to the molding cavity. A vacuum device 3 is connected to the vacuum port on the mold body 1 via a vacuum pipe 4, enabling the vacuum device 3 to perform a vacuuming operation on the mold body 1, creating a vacuum environment within the molding cavity. An infusion device 5 is connected to the infusion port on the mold body 1 via an infusion pipe (not shown in the figure), enabling the infusion device 5 to perform a glue injection operation on the mold body 1, allowing the glue to be injected into the molding cavity from the infusion port.

[0046] The mold body 1 is provided with a row of pressure detection points 11 or multiple rows of pressure detection points 11 are provided at intervals along the circumference of the mold body 1. A row of pressure detection points 11 includes multiple pressure detection points 11 arranged at intervals along the length direction of the mold body 1. Each pressure detection point 11 is connected to the molding cavity. Each pressure detection point 11 is provided with a pressure sensor 2. Thus, the pressure value at the corresponding pressure detection point 11 can be detected by any pressure sensor 2.

[0047] The specific location of pressure detection point 11 on mold body 1 can be set according to actual conditions. Optionally, please refer to [link / reference needed]. Figure 1 and Figure 2 In this embodiment, two rows of pressure detection points 11 are respectively located at both ends of the mold body 1 in the width direction. The following description will take the example of having two rows of pressure detection points 11 on the mold body 1, and the two rows of pressure detection points 11 being respectively located at both ends of the mold body 1 in the width direction.

[0048] The control device 6 is electrically connected to the pressure sensor 2, the vacuum device 3, and the injection device 5. Each pressure sensor 2 can send the pressure value detected by the pressure sensor 2 to the control device 6 via wired or wireless means. The control device 6 can control the start and stop of the vacuum device 3 and the injection device 5.

[0049] In the process of manufacturing wind turbine blades using the blade manufacturing mold 100, firstly, the control device 6 activates the vacuum device 3 for a first preset time, then shuts it off to maintain pressure on the mold body 1, thereby creating a vacuum environment within the molding cavity of the mold body 1. Then, the control device 6 acquires the pressure values ​​detected by all pressure sensors 2 and determines whether the vacuum environment within the mold body 1 is qualified based on these values, allowing the blade manufacturing mold 100 to quickly detect the vacuum environment. Finally, when the control device 6 determines that the vacuum environment within the mold body 1 is qualified, it first activates the vacuum device 3 and then the injection device 5, controlling both to inject the mold body 1; when the control device 6 determines that the vacuum environment within the mold body 1 is unqualified, it does not control the vacuum device 3 or the injection device 5 to inject the mold body 1. In this case, the control device 6 does not control the vacuum device 3 and the injection device 5 to inject the mold body 1. This can be either that the control device 6 does not start the vacuum device 3 and the injection device 5, or that the control device 6 starts the vacuum device 3 but does not start the injection device 5.

[0050] The blade manufacturing mold 100 of the present invention has multiple pressure sensors 2 arranged along the length direction on the mold body 1. The control device 6 can analyze whether the vacuum environment inside the mold body 1 is qualified according to the pressure sensors 2. Only when the vacuum environment is qualified will the vacuum device 3 and the injection device 5 be started in sequence to perform the injection operation, thereby avoiding the problem of human misjudgment or injection without opening the vacuum.

[0051] The embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0052] The spacing between two adjacent pressure detection points 11 in each column of pressure detection points 11 can be set according to actual conditions. Optionally, please refer to [link / reference needed]. Figure 1 and Figure 2 In this embodiment, the distance between two adjacent pressure detection points 11 in each column of pressure detection points 11 is 15m to 20m.

[0053] Specifically, the distance between two adjacent pressure detection points 11 in each row of pressure detection points 11 along the length of the mold body 1 is 15m to 20m. This optimization of the distance between two adjacent pressure detection points 11 ensures the accuracy of analyzing whether the vacuum environment is qualified by the pressure value detected at the pressure detection point 11, while also avoiding the problem of too many pressure sensors 2 due to the excessive density of pressure detection points 11. The spacing between any two adjacent pressure detection points 11 in each row can be 15.0m, 15.1m, 15.2m, 15.3m, 15.4m, 15.5m, 15.6m, 15.7m, 15.8m, 15.9m, 16.0m, 16.1m, 16.2m, 16.3m, 16.4m, 16.5m, 16.6m, 16.7m, 16.8m, 16.9m, 17.0m, 17.1m, 17.2m, etc. 17.3m, 17.4m, 17.5m, 17.6m, 17.7m, 17.8m, 17.9m, 18.0m, 18.1m, 18.2m, 18.3m, 18.4m, 18.5m, 18.6m, 1 8.7m, 18.8m, 18.9m, 19.0m, 19.1m, 19.2m, 19.3m, 19.4m, 19.5m, 19.6m, 19.7m, 19.8m, 19.9m or 20.0m, etc.

[0054] Vacuum device 3 is connected to the vacuum port on mold body 1 via vacuum pipeline 4. The specific configuration of vacuum pipeline 4 can be set according to actual conditions. Optionally, please refer to [link / reference]. Figure 1 and Figure 2 In this embodiment, the blade manufacturing mold 100 also includes a vacuum pipeline 4, which includes a main pipe 41 and a first branch pipe 42a. The main pipe 41 extends along the length direction of the mold body 1 and is equipped with a vacuum device 3. The first branch pipe 42a extends along the width direction of the mold body 1 and multiple first branch pipes 42a are spaced apart along the length direction of the mold body 1. The two ends of each first branch pipe 42a are respectively connected to the main pipe 41 and the forming cavity.

[0055] Specifically, the mold body 1 has vacuum pipelines 4 on one or both sides in the width direction of the mold body 1. The following description will use the example of two vacuum pipelines 4 on each side of the mold body 1 in the width direction as an example. The vacuum pipeline 4 includes a main pipe 41 extending along the length direction of the mold body 1 and first branch pipes 42a extending along the width direction of the mold body 1. The main pipe 41 and the mold body 1 are spaced apart in the width direction of the mold body 1. Multiple first branch pipes 42a are spaced apart between the main pipe 41 and the mold body 1 along the length direction of the mold body 1. Each first branch pipe 42a connects to the main pipe 41 and a vacuum port on the mold body 1 at both ends. This arrangement of the vacuum pipeline 4 is relatively simple.

[0056] Vacuum devices 3 are typically located on the side of the main pipe 41 furthest from the mold body 1. The specific number of vacuum devices 3 on the main pipe 41 can be determined according to actual conditions; for example, one or more vacuum devices 3 can be installed on the main pipe 41. Optionally, please refer to... Figure 1 and Figure 2 In this embodiment, multiple vacuum devices 3 are provided at intervals along the length of the mold body 1 on the main tube 41.

[0057] Further, please refer to Figure 1 and Figure 2 In this embodiment, the vacuum pipeline 4 further includes a second branch pipe 42b extending along the width direction of the mold body 1. Multiple second branch pipes 42b are spaced apart along the length direction of the mold body 1. Each second branch pipe 42b is connected to a main pipe 41 and a pressure detection point 11 at both ends. Each second branch pipe 42b is equipped with a pressure sensor 2.

[0058] Specifically, the mold body 1 has multiple vacuum ports at both ends of its width direction, corresponding to the vacuum pipelines 4 on both sides. These multiple vacuum ports include multiple first vacuum ports and multiple second vacuum ports. Each first vacuum port is connected to the main pipe 41 via a first branch pipe 42a, and each second vacuum port is connected to the main pipe 41 via a second branch pipe 42b. Each second branch pipe 42b is equipped with a pressure sensor 2, thus forming a pressure detection point 11 for each second vacuum port. This addition of pressure sensors 2 to the vacuum pipelines 4 on both sides of the mold body 1 allows for the detection of pressure in the molding cavity. The vacuum port closest to the blade root can be designated as a second vacuum port, while the vacuum port closest to the blade tip can be designated as a first vacuum port.

[0059] Vacuum line 4 includes multiple first branch pipes 42a and multiple second branch pipes 42b. The specific arrangement of the multiple first branch pipes 42a and multiple second branch pipes 42b can be set according to the actual situation. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, a first branch pipe 42a is provided between any two adjacent second branch pipes 42b.

[0060] Specifically, one, two, three, or more first branch pipes 42a are provided between any two adjacent second branch pipes 42b. For example, please refer to [link to relevant documentation]. Figure 1 and Figure 2 In this embodiment, a first branch pipe 42a is provided between any two adjacent second branch pipes 42b, that is, a first branch pipe 42a is provided between any two adjacent pressure detection points 11. This arrangement of pressure detection points 11 on the mold body 1 is relatively reasonable.

[0061] There are several ways for the control device 6 to determine whether the vacuum environment inside the mold body 1 is qualified based on the pressure values ​​detected by all the pressure sensors 2. For example, when the pressure value detected by each pressure sensor 2 is less than the first preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is qualified, and then starts the vacuum device 3 and the filling device 5 to fill the mold body 1; when the pressure value detected by each pressure sensor 2 is greater than the first preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is unqualified, and then does not fill the mold body 1.

[0062] For example, when the change in pressure value detected by each pressure sensor 2 is less than the second preset pressure threshold within the second preset time period, the control device 6 determines that the vacuum environment inside the mold body 1 is qualified, and then starts the vacuum device 3 and the injection device 5 to inject the mold body 1; when the change in pressure value detected by each pressure sensor 2 is greater than the second preset pressure threshold within the second preset time period, the control device 6 determines that the vacuum environment inside the mold body 1 is unqualified, and then does not inject the mold body 1.

[0063] For example, when the pressure value detected by each pressure sensor 2 is less than the first preset pressure threshold, and the change in the pressure value detected by each pressure sensor 2 within the second preset time period is less than the second preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is qualified, and then starts the vacuum device 3 and the injection device 5 to inject the mold body 1; when the pressure value detected by each pressure sensor 2 is greater than the first preset pressure threshold or the change in the pressure value detected by each pressure sensor 2 within the second preset time period is greater than the second preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is unqualified, and then does not inject the mold body 1.

[0064] Optionally, in this embodiment, when the vacuum device 3 and the injection device 5 are injecting the molding cavity, the control device 6 is used to determine the leakage location of the mold body 1 based on the pressure value detected by the pressure sensor 2.

[0065] Specifically, during the injection process initiated by the control device 6, which activates the vacuum device 3 and the injection device 5, the control device 6 can analyze whether there is a leak in the mold body 1 based on the pressure value detected by the pressure sensor 2. When the control device 6 determines that there is a leak in the mold body 1, it can pinpoint the location of the leak. This allows the blade manufacturing mold 100 to quickly analyze local pressure loss during product manufacturing, quickly locate and stop the damage, thereby improving the quality and structural integrity of the composite material.

[0066] There are several ways for the control device 6 to determine whether there is an air leak in the mold body 1 based on the pressure value detected by the pressure sensor 2. For example, when the pressure value detected by a certain pressure sensor 2 is less than the third preset pressure threshold, the control device 6 determines that there is no air leak at the pressure detection point 11 corresponding to that pressure sensor 2; when the pressure value detected by a certain pressure sensor 2 is greater than the third preset pressure threshold, the control device 6 determines that there is an air leak at the pressure detection point 11 corresponding to that pressure sensor 2.

[0067] For example, if the change in pressure value detected by a certain pressure sensor 2 is less than the fourth preset pressure threshold within the third preset time period, the control device 6 determines that there is no air leakage at the pressure detection point 11 corresponding to the pressure sensor 2; if the change in pressure value detected by a certain pressure sensor 2 is greater than the fourth preset pressure threshold within the third preset time period, the control device 6 determines that there is air leakage at the pressure detection point 11 corresponding to the pressure sensor 2.

[0068] For example, when the pressure values ​​detected by a certain pressure sensor 2 are all less than the third preset pressure threshold, and the change in the pressure values ​​detected by a certain pressure sensor 2 within the third preset time period is all less than the fourth preset pressure threshold, the control device 6 determines that there is no air leakage at the pressure detection point 11 corresponding to the pressure sensor 2; when the pressure values ​​detected by a certain pressure sensor 2 are all greater than the third preset pressure threshold, or the change in the pressure values ​​detected by a certain pressure sensor 2 within the third preset time period is all greater than the fourth preset pressure threshold, the control device 6 determines that there is air leakage at the pressure detection point 11 corresponding to the pressure sensor 2.

[0069] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the blade manufacturing mold 100 also includes a display device 7, which is electrically connected to the control device 6.

[0070] Specifically, the display device 7 can be located on the upper side of the mold body 1, and the control device 6 can control the display device 7 to perform display operations. For example, the display device 7 can display the pressure values ​​detected by the pressure sensor 2 at various parts of the mold body 1 in real time; the display device 7 can also provide early warnings for parts of the mold body 1 with abnormal pressure. In this way, the display device 7 can help on-site operators quickly identify abnormal pressure information and prevent product quality losses.

[0071] Accordingly, another embodiment of the present invention also provides a control method for a blade manufacturing mold, which can be implemented based on the blade manufacturing mold described above. Figure 3 A preferred embodiment of the control method for blade manufacturing molds provided by the present invention is shown. The control method for blade manufacturing molds provided by another embodiment of the present invention will be described in detail below. For parts that are the same as or corresponding to the previous embodiment, please refer to the corresponding descriptions of the foregoing embodiments; detailed descriptions will not be repeated below.

[0072] Please see Figure 3 In this embodiment, the control method for the blade manufacturing mold includes the following steps S310 to S330.

[0073] Step S310: After starting the vacuum device for the first preset time, turn off the vacuum device to maintain pressure on the mold body.

[0074] Specifically, during the process of manufacturing wind turbine blades using the blade manufacturing mold 100, the control device 6 will start the vacuum device 3 for a first preset time and then shut down the vacuum device 3 to maintain pressure on the mold body 1, thereby creating a vacuum environment in the molding cavity of the mold body 1.

[0075] Step S320: Obtain the pressure values ​​detected by all pressure sensors.

[0076] Specifically, each pressure sensor 2 can detect the pressure value of a corresponding pressure detection point 11 on the mold body 1 in real time, and send the detected pressure value to the control device 6 via wired or wireless means, so that the control device 6 can obtain the pressure values ​​detected by all pressure sensors 2.

[0077] Step S330: If the pressure value detected by each pressure sensor is less than the first preset pressure threshold and / or the change value of the pressure value detected by each pressure sensor within the second preset time period is less than the second preset pressure threshold, then start the vacuum device and the injection device to inject the mold body.

[0078] Specifically, after the control device 6 acquires the pressure values ​​detected by all the pressure sensors 2, the control device 6 can determine whether the vacuum environment inside the mold body 1 is qualified based on the pressure values ​​detected by all the pressure sensors 2. When the control device 6 determines that the vacuum environment inside the mold body 1 is qualified, the control device 6 first starts the vacuum device 3 and then starts the pouring device 5, controlling the vacuum device 3 and the pouring device 5 to pour the mold body 1; when the control device 6 determines that the vacuum environment inside the mold body 1 is unqualified, the control device 6 does not control the vacuum device 3 and the pouring device 5 to pour the mold body 1. Among them, the control device 6 not controlling the vacuum device 3 and the pouring device 5 to pour the mold body 1 can mean that the control device 6 does not start the vacuum device 3 and the pouring device 5; or it can mean that the control device 6 starts the vacuum device 3 but does not start the pouring device 5.

[0079] There are several ways for the control device 6 to determine whether the vacuum environment inside the mold body 1 is qualified based on the pressure values ​​detected by all the pressure sensors 2. For example, when the pressure value detected by each pressure sensor 2 is less than the first preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is qualified, and then starts the vacuum device 3 and the filling device 5 to fill the mold body 1; when the pressure value detected by each pressure sensor 2 is greater than the first preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is unqualified, and then does not fill the mold body 1.

[0080] For example, when the change in pressure value detected by each pressure sensor 2 is less than the second preset pressure threshold within the second preset time period, the control device 6 determines that the vacuum environment inside the mold body 1 is qualified, and then starts the vacuum device 3 and the injection device 5 to inject the mold body 1; when the change in pressure value detected by each pressure sensor 2 is greater than the second preset pressure threshold within the second preset time period, the control device 6 determines that the vacuum environment inside the mold body 1 is unqualified, and then does not inject the mold body 1.

[0081] For example, when the pressure value detected by each pressure sensor 2 is less than the first preset pressure threshold, and the change in the pressure value detected by each pressure sensor 2 within the second preset time period is less than the second preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is qualified, and then starts the vacuum device 3 and the injection device 5 to inject the mold body 1; when the pressure value detected by each pressure sensor 2 is greater than the first preset pressure threshold or the change in the pressure value detected by each pressure sensor 2 within the second preset time period is greater than the second preset pressure threshold, the control device 6 determines that the vacuum environment inside the mold body 1 is unqualified, and then does not inject the mold body 1.

[0082] Optionally, in this embodiment, after step S330, the method for controlling the blade manufacturing mold further includes steps S340 to S350.

[0083] Step S340: Obtain the pressure values ​​detected by all pressure sensors.

[0084] Step S350: Select the pressure sensor with the largest detected pressure value among all pressure sensors as the target pressure sensor.

[0085] Step S360: If the pressure value detected by the target pressure sensor is less than the third preset pressure threshold and / or the change in the pressure value detected by the target pressure sensor within the third preset time period is less than the fourth preset pressure threshold, then output the encoding information and / or position information of the target pressure sensor.

[0086] Specifically, during the injection process initiated by the control device 6, which activates the vacuum device 3 and the injection device 5, the control device 6 can analyze whether there is a leak in the mold body 1 based on the pressure value detected by the pressure sensor 2. When the control device 6 determines that there is a leak in the mold body 1, it can pinpoint the location of the leak. This allows the blade manufacturing mold 100 to quickly analyze local pressure loss during product manufacturing, quickly locate and stop the damage, thereby improving the quality and structural integrity of the composite material.

[0087] After the control device 6 acquires the pressure values ​​detected by all the pressure sensors 2, the control device 6 selects the one with the largest pressure value detected by all the pressure sensors 2 as the target pressure sensor 2a, and analyzes whether there is air leakage in the mold body 1 based on the pressure value detected by the target pressure sensor 2a.

[0088] There are several ways for the control device 6 to analyze whether there is an air leak in the mold body 1 based on the pressure value detected by the target pressure sensor 2a. For example, when the pressure values ​​detected by the target pressure sensor 2a are all less than the third preset pressure threshold, the control device 6 determines that there is no air leak at the pressure detection point 11 corresponding to the target pressure sensor 2a; when the pressure values ​​detected by the target pressure sensor 2a are all greater than the third preset pressure threshold, the control device 6 determines that there is an air leak at the pressure detection point 11 corresponding to the target pressure sensor 2a.

[0089] For example, if the change in pressure value detected by the target pressure sensor 2a is less than the fourth preset pressure threshold within the third preset time period, the control device 6 determines that there is no air leakage at the pressure detection point 11 corresponding to the target pressure sensor 2a; if the change in pressure value detected by the target pressure sensor 2a is greater than the fourth preset pressure threshold within the third preset time period, the control device 6 determines that there is air leakage at the pressure detection point 11 corresponding to the target pressure sensor 2a.

[0090] For example, when the pressure values ​​detected by the target pressure sensor 2a are all less than the third preset pressure threshold, and the change in the pressure values ​​detected by the target pressure sensor 2a within the third preset time period is all less than the fourth preset pressure threshold, the control device 6 determines that there is no air leakage at the pressure detection point 11 corresponding to the target pressure sensor 2a; when the pressure values ​​detected by the target pressure sensor 2a are all greater than the third preset pressure threshold, or the change in the pressure values ​​detected by the target pressure sensor 2a within the third preset time period is all greater than the fourth preset pressure threshold, the control device 6 determines that there is air leakage at the pressure detection point 11 corresponding to the target pressure sensor 2a.

[0091] When the control device 6 determines that there is an air leak at the pressure detection point 11 corresponding to the target pressure sensor 2a, the control device 6 will output the encoding information and / or location information of the target pressure sensor 2a, so that the operator can locate the air leak location of the mold body 1 based on the encoding information and / or location information of the target pressure sensor 2a.

[0092] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A blade manufacturing mold, characterized in that, include: The mold body has a molding cavity for casting and molding blades. The mold body has at least one row of pressure detection points connected to the molding cavity. Each row of pressure detection points includes a plurality of pressure detection points arranged at intervals along the length of the mold body. A pressure sensor is provided at each of the pressure detection points; A vacuum device, which is connected to the molding cavity; Injection device, the injection device being connected to the molding cavity; A control device is electrically connected to the pressure sensor, the vacuum device, and the injection device. The control device is used to control the vacuum device and the injection device to inject the mold body according to the pressure value detected by the pressure sensor.

2. The blade manufacturing mold according to claim 1, characterized in that, The distance between two adjacent pressure detection points in each column is 15m to 20m.

3. The blade manufacturing mold according to claim 1, characterized in that, The two rows of pressure detection points are respectively set at both ends of the mold body in the width direction of the mold body.

4. The blade manufacturing mold according to claim 1, characterized in that, The blade manufacturing mold also includes a vacuum pipeline, which includes: The main tube extends along the length of the mold body, and the vacuum device is provided on the main tube. The first branch pipe extends along the width direction of the mold body, and multiple first branch pipes are spaced apart along the length direction of the mold body. The two ends of each first branch pipe are respectively connected to the main pipe and the molding cavity.

5. The blade manufacturing mold according to claim 4, characterized in that, The vacuum pipeline further includes a second branch pipe extending along the width direction of the mold body, with multiple second branch pipes spaced apart along the length direction of the mold body. Each second branch pipe is connected at both ends to the main pipe and a pressure detection point, and each second branch pipe is equipped with a pressure sensor; and / or, The main tube is provided with a plurality of vacuum devices spaced apart along the length of the mold body.

6. The blade manufacturing mold according to claim 5, characterized in that, The first branch pipe is provided between any two adjacent second branch pipes.

7. The blade manufacturing mold according to claim 1, characterized in that, When the vacuum device and the injection device inject the molding cavity, the control device is used to determine the location of air leakage in the mold body based on the pressure value detected by the pressure sensor.

8. The blade manufacturing mold according to claim 1, characterized in that, The blade manufacturing mold also includes a display device, which is electrically connected to the control device.

9. A control method for a blade manufacturing mold as described in any one of claims 1-8, characterized in that, include: After the vacuum device is started for a first preset time, the vacuum device is turned off to maintain pressure on the mold body; Obtain the pressure values ​​detected by all pressure sensors; If the pressure value detected by each pressure sensor is less than the first preset pressure threshold and / or the change in pressure value detected by each pressure sensor within a second preset time period is less than the second preset pressure threshold, then the vacuum device and the injection device are activated to inject the mold body.

10. The control method for blade manufacturing mold according to claim 9, characterized in that, After activating the vacuum device and the injection device to inject the mold body if the pressure value detected by each pressure sensor is less than a first preset pressure threshold and / or the change in pressure value detected by each pressure sensor is less than the second preset pressure threshold within a second preset time period, the method further includes: Obtain the pressure values ​​detected by all the pressure sensors; Select the pressure sensor with the largest detected pressure value from all the pressure sensors as the target pressure sensor; If the pressure value detected by the target pressure sensor is less than a third preset pressure threshold and / or the change in the pressure value detected by the target pressure sensor within a third preset time period is less than a fourth preset pressure threshold, then the encoded information and / or position information of the target pressure sensor are output.

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