Fan blade mold heating wire fixing device and method

Abstract

The invention relates to the technical field of electric heating of wind power blade molds, in particular to a fan blade mold heating wire fixing device and method.The fixing device comprises an end fixing assembly used for fixing the upper end and the lower end of a heating wire and multiple sets of interval fixing assemblies used for fixing the middle section of the heating wire; the end fixing assembly comprises a plurality of end fixing buckles which are detachably connected in sequence through a first cross beam. Each end part fixing buckle comprises a plurality of fixing buckle main bodies which are horizontally arranged, the upper surface of each fixing buckle main body is provided with a flange plate which extends outwards, and the lower surface of the flange plate, the side surface of each fixing buckle main body and the upper surface of the first cross beam are encircled to form a heating wire fixing gap; the interval fixing assembly comprises a plurality of interval fixing buckles which are detachably connected in sequence through a second cross beam; each interval fixing buckle comprises a cover plate horizontally arranged above the heating wire in a covering mode, and a fixing groove penetrating through the two sides of the cover plate is formed in the lower surface of the cover plate; and the upper surface of the cover plate is also provided with a glue discharging through hole communicated with the fixed groove.

Description

Technical Field

[0001] The present invention relates to the technical field of electric heating of wind turbine blade moulds, and in particular to a device and method for fixing a heating wire of a wind turbine blade mould. Background Art

[0002] In the manufacturing process of wind turbine blades, heating treatment is a key step to ensure that the blades are cured and molded and obtain the expected mechanical properties and durability. Common heating methods include electric heating and water heating. Among them, electric heating is widely used in blade mold manufacturing due to its high heating efficiency and good control precision.

[0003] However, the existing electric heating technology has the following problems that need to be solved in its application: First, the spacing between the heating wires is uneven. In the traditional heating wire laying process, due to the lack of an effective spacing control mechanism, the heating wires are unevenly arranged, which affects the uniformity of heating in the mold and ultimately affects the quality of blade curing. Second, the heating wires are not firmly fixed: during the heating process, the mold is deformed by heat, which can easily cause the heating wires to loosen or fall off, which not only affects the heating effect, but also increases the maintenance frequency and maintenance costs, and reduces production efficiency. Third, the process is highly complex. The existing heating wire laying and fixing methods often require manual measurement and adjustment, which leads to complex processes, low efficiency, and prone to human errors.

[0004] Therefore, in view of the above problems, the present invention urgently needs to provide a fan blade mold heating wire fixing device and method. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a device and method for fixing the heating wire of a fan blade mold. The device and method solve the problems of loose fixation and uneven arrangement of the heating wire in the prior art through the design of multiple evenly distributed detachable fixing buckles. The device and method can ensure that the heating wire is evenly and stably fixed on the mold surface, improve the production quality and efficiency of the fan blades, enable the heating wire to effectively fit the structure inside the mold, and achieve precise spacing control.

[0006] The present invention provides a fan blade mold heating wire fixing device, comprising oppositely arranged end fixing components for fixing the upper and lower ends of the heating wire and multiple groups of spacing fixing components for fixing the middle section of the heating wire;

[0007] The end fixing assembly includes a plurality of end fixing buckles which are detachably connected in sequence through the first crossbeam; each end fixing buckle includes a plurality of fixing buckle bodies placed horizontally, and the upper surface of each fixing buckle body is provided with a flange plate extending outward, and the lower surface of the flange plate, the side surface of the fixing buckle body and the upper surface of the first crossbeam are surrounded to form a heating wire fixing gap; the width of the flange plate is consistent with the width of the fixing buckle column;

[0008] The spacing fixing assembly includes a plurality of spacing fixing buckles which are detachably connected in sequence through a second cross beam; each spacing fixing buckle includes a cover plate horizontally arranged above the heating wire, a fixing groove penetrating through both sides of the cover plate is provided on the lower surface of the cover plate, and the direction of the fixing groove is arranged perpendicular to the direction of the second cross beam; a glue removal through hole which passes through the fixing groove is also provided on the upper surface of the cover plate.

[0009] Preferably, the fixing buckle body comprises a horizontally placed rectangular column, the left and right sides of which are respectively connected to the first crossbeam; a semicircular column having the same height as the rectangular column is provided on the rear side of the rectangular column.

[0010] Preferably, the first cross beam comprises a breaking portion, both ends of which are connected to the side edges of the corresponding rectangular column through connecting portions respectively; and a breaking groove perpendicular to the length direction of the first cross beam is provided on the upper surface of the breaking portion.

[0011] Preferably, the flange plate is coaxially arranged on the upper surface of the semicircular cylinder; the side surface of the flange plate is provided with a flange edge extending outwardly along the arc-shaped surface of the semicircular cylinder.

[0012] Preferably, the width of the first crossbeam is 1.5 mm and the length is 7 mm; the width of the second crossbeam is 2 mm and the length is 5 mm.

[0013] Preferably, a chamfer perpendicular to the length direction of each second beam is provided above each cover plate.

[0014] Preferably, the depth of the breaking groove is 1.5 mm.

[0015] The present invention also provides a method for fixing a fan blade mold heating wire, comprising the following steps:

[0016] 1) Calculate the number of end fixing buckles required according to the length of the heating wire;

[0017] 2) Folding a specific number of two sets of end fixing assemblies through the first crossbeam, and installing the two sets of end fixing assemblies on the surface of the fan blade mold relative to each other, so that the end fixing buckles are staggered in pairs;

[0018] 3) Wind the heating wires sequentially and fix them in the heating wire fixing gaps of the two sets of end fixing buckles;

[0019] 4) Observe the heating wire after winding. If there are heating wires with uneven spacing or whose height from the surface of the fan blade mold is greater than the set height, fold a specific number of multiple sets of spacing fixing components through the second crossbeam, and drip glue on the heating wires with uneven spacing or whose height from the surface of the fan blade mold is greater than the set height. Snap each spacing fixing buckle onto the top of the heating wire so that each fixing groove is arranged outside the heating wire; press each cover plate so that the glue is discharged along the glue discharge through hole, and the heating wire is evenly fixed to the surface of the fan blade mold.

[0020] Preferably, each end fixing buckle is bonded or screwed to the fan blade mold.

[0021] Preferably, the height is set equal to the height of each first beam.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention provides a device and method for fixing the heating wire of a fan blade mold, in which each end fixing buckle and each spacing fixing buckle are evenly and detachably connected, the number of fixing buckles can be arbitrarily selected according to the length of the heating wire, and the uniformity of the spacing of the heating wires is ensured, thereby achieving precise spacing control, effectively avoiding the problem of unstable heating effect caused by uneven distribution of the heating wires, and improving the consistency and overall quality of the product; at the same time, the provision of multiple groups of spacing fixing buckles makes the present invention suitable for various types of fan blade molds, has broad application prospects, and can meet the needs of molds of different shapes and sizes; in addition, each spacing fixing buckle described in the present invention is provided with a glue discharge through hole, which can effectively reduce the accumulation of excess glue, avoid problems such as spacing deviation and improper installation caused by excessive glue, and ensure the accuracy of the installation of the spacing fixing buckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram (stereoscopic diagram) of a fan blade mold heating wire fixing device according to an embodiment of the present invention;

[0025] Figure 2 1 is a schematic diagram of the structure of the fan blade mold heating wire fixing device according to an embodiment of the present invention (top view);

[0026] Figure 3 is a schematic diagram of the structure of one group of end fixing buckles according to an embodiment of the present invention (top view);

[0027] Figure 4 1 is a schematic diagram of the structure of one set of spacing fixing buckles according to an embodiment of the present invention (top view);

[0028] Figure 5 is a structural schematic diagram (stereoscopic diagram) of one group of end fixing buckles according to an embodiment of the present invention;

[0029] Figure 6 is a structural schematic diagram (stereoscopic diagram) of one set of spacing fixing buckles according to an embodiment of the present invention;

[0030] Figure 7 1 is a schematic diagram of the structure of the end fixing buckle according to an embodiment of the present invention (bottom view);

[0031] Figure 8 is a structural schematic diagram (stereoscopic diagram) of an end fixing buckle according to an embodiment of the present invention;

[0032] Fig. 9 is a structural schematic diagram (bottom view) of a spacing fixing buckle according to an embodiment of the present invention;

[0033] Fig.10 It is a structural schematic diagram (stereoscopic diagram) of the spacing fixing buckle described in an embodiment of the present invention.

[0034] Among them: 1. End fixing buckle; 101. Rectangular cylinder; 102. First crossbeam; 1021. Connecting part; 1022. Breaking part; 1023. Breaking groove; 103. Semicircular cylinder; 104. Flange plate; 2. Spacing fixing buckle; 201. Cover plate; 202. Fixing groove; 203. Glue removal hole; 204. Second crossbeam; 3. Heating wire. DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solution of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The purpose of the present invention is to solve the problems of the heating wire being not firmly fixed and the spacing being uneven in the prior art, and to ensure that the electric heating wire can maintain a uniform spacing and be firmly fixed during the manufacturing process of the blade mold, so as to achieve uniform heating in the mold. This uniform heating can not only significantly improve the curing effect of the blade material, but also improve production efficiency; the fan blade mold involved in the present invention is precisely stacked and laid by multiple layers of alkali-free glass fiber cloth, and then a composite material structure with excellent high temperature resistance is prepared through a resin infusion process; the mold has excellent strength and thermal stability, which provides an ideal basis for laying the electric heating wire, thereby achieving efficient heating function. When designing the inner surface of the mold and laying the heating layer, the electric heating wire needs to be scientifically and reasonably laid out. The arrangement of the heating wire is very important and must be subjected to precise calculation and simulation analysis to ensure that the heat can be evenly distributed to various areas of the mold during the heating process. By optimizing the density, spacing and arrangement path of the heating wire, not only the heating efficiency of the mold can be improved, but also the phenomenon of local overheating or uneven heat distribution can be effectively avoided, ensuring that the fan blade is heated evenly during the molding process, and further improving the quality and consistency of the finished blade.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, this embodiment provides a fan blade mold heating wire fixing device, including oppositely arranged end fixing components for fixing the upper and lower ends of the heating wire 3 and multiple groups of spacing fixing components for fixing the middle section of the heating wire 3;

[0038] The end fixing assembly includes a plurality of end fixing buckles 1 which are detachably connected in sequence through the first crossbeam 102; each end fixing buckle 1 includes a plurality of fixing buckle bodies placed horizontally, and the upper surface of each fixing buckle body is provided with a flange plate 104 extending outward, and the lower surface of the flange plate 104, the side surface of the fixing buckle body and the upper surface of the first crossbeam 102 are surrounded to form a heating wire fixing gap; the width of the flange plate 104 is consistent with the width of the fixing buckle column;

[0039] The spacing fixing component includes a plurality of spacing fixing buckles 2 which are detachably connected in sequence through a second crossbeam 204; each spacing fixing buckle 2 includes a cover plate 201 horizontally covered above the heating wire 3, and a fixing groove 202 which passes through both sides of the cover plate 201 is provided on the lower surface of the cover plate 201, and the direction of the fixing groove 202 is perpendicular to the direction of the second crossbeam 204; a glue removal through hole 203 which passes through the fixing groove 202 is also provided on the upper surface of the cover plate 201.

[0040] The present invention provides a device for fixing the heating wire of a fan blade mold, in which each end fixing buckle 1 and each spacing fixing buckle 2 are evenly and detachably connected, and the number of fixing buckles can be arbitrarily selected according to the length of the heating wire 3, and the uniformity of the heating wire spacing is ensured, thereby achieving precise spacing control, effectively avoiding the problem of unstable heating effect caused by uneven distribution of the heating wire 3, and improving the consistency and overall quality of the product; at the same time, the provision of multiple groups of spacing fixing components makes the present invention suitable for various types of fan blade molds, has a broad application prospect, and can meet the requirements of molds of different shapes and sizes; in addition, each spacing fixing buckle 2 described in the present invention is provided with a glue discharge through hole 203, which can effectively reduce the accumulation of excess glue, avoid problems such as spacing deviation and improper installation caused by excessive glue, and ensure the accuracy of the installation of the spacing fixing buckle 2.

[0041] Among them, the fixing groove 202 allows the heating wire 3 to be fine-tuned by sliding up and down after the heating wire 3 is surrounded during the installation of the spacing fixing buckle 2, thereby ensuring the fixing effect of the heating wire 3 and ensuring that the heating wire 3 is fully fitted with the fan blade mold to prevent any possible floating or deviation.

[0042] like Figure 1 , Figure 3 , Figure 5 , Figure 7 , Figure 8 As shown, the fixing buckle body includes a horizontally placed rectangular column 101, the left and right sides of the rectangular column 101 are respectively connected to the first crossbeam 102; the rear side of the rectangular column 101 is provided with a semicircular column 103 with the same height as the rectangular column 101.

[0043] like Figure 3 , Figure 5 , Figure 8 As shown, the first beam 102 includes a breaking portion 1022 , both ends of which are connected to the side edges of the corresponding rectangular column 101 through connecting portions 1021 ; the upper surface of the breaking portion 1022 is provided with a breaking groove 1023 perpendicular to the length direction of the first beam 102 .

[0044] In the present invention, when it is necessary to break the first cross beam 102 to separate the adjacent two end fixing buckles 1, the two breaking parts 1022 are used as handles to break the first cross beam 102 from the position of the breaking groove 1023, thereby reducing the force required for breaking, making the separation operation of the two end fixing buckles 1 simpler, and avoiding the break position deviation from causing damage to the heating wire fixing gap and causing the position deviation of the heating wire 3.

[0045] like Figure 5 , Figure 7As shown, the flange plate 104 is coaxially arranged on the upper surface of the semicircular cylinder 103 ; the side surface of the flange plate 104 is provided with a flange edge extending outwardly along the arc-shaped surface of the semicircular cylinder 103 .

[0046] In the present invention, the flange plate 104 and the semicircular cylinder 103 are coaxially arranged, so that the lower surface of the flange plate 104, the side surface of the semicircular cylinder 103 and the upper surface of the first cross beam 102 are surrounded to form a heating wire fixing groove with a crescent-shaped cross-section that is wider in the middle and gradually narrower on both sides, and the two ends of the heating wire fixing groove are flush with the two ends of the flange plate 104, so that after the heating wire 3 passes through the heating wire fixing groove, when the shape of the fan blade mold has a large drop, the heating wire 3 can float on the left and right sides of the flange plate 104 and the semicircular cylinder 103, thereby avoiding the local continuous stress on the heating wire 3 caused by the structural break of the end fixing buckle 1, and avoiding the breakage and deformation of the heating wire 3.

[0047] In this embodiment, the first crossbeam 102 has a width of 1.5 mm and a length of 7 mm; the second crossbeam 204 has a width of 2 mm and a length of 5 mm.

[0048] like Figure 1 , Figure 2 , Figure 4 , Figure 6 , Fig.10 As shown, a chamfer perpendicular to the length direction of each second beam 204 is also provided on the top of each cover plate 201 .

[0049] In this embodiment, the depth of the breaking groove 1023 is 1.5 mm.

[0050] The present invention also provides a method for fixing a fan blade mold heating wire, comprising the following steps:

[0051] 1) Calculate the required number of end fixing buckles 1 according to the length of the heating wire 3;

[0052] 2) Folding a specific number of two sets of end fixing components through the first crossbeam 102, and installing the two sets of end fixing components on the surface of the fan blade mold relative to each other, so that the end fixing buckles 1 are staggered in pairs;

[0053] 3) The heating wires 3 are sequentially wound and fixed in the heating wire fixing gaps of the two sets of end fixing buckles 1, so that each heating wire 3 is correspondingly limited in height direction by each flange plate 104 and each first crossbeam 102;

[0054] 4) Observe the heating wire 3 after winding. If there are heating wires 3 with uneven spacing or whose height from the surface of the fan blade mold is greater than the set height, fold a specific number of multiple sets of spacing fixing components through the second crossbeam 204, and drip glue on the heating wires 3 with uneven spacing or whose height from the surface of the fan blade mold is greater than the set height. Snap each spacing fixing buckle 2 onto the top of the heating wire 3, so that each fixing groove 202 is arranged outside the heating wire 3; press each cover plate 201 to discharge the glue along the glue discharge through hole 203, and evenly fix the heating wire 3 on the surface of the fan blade mold.

[0055] The present invention provides a method for fixing the heating wire of a fan blade mold, in which each end fixing buckle 1 and each spacing fixing buckle 2 are evenly and detachably connected, the number of fixing buckles can be arbitrarily selected according to the length of the heating wire 3, and the uniformity of the heating wire spacing is ensured, thereby achieving precise spacing control, effectively avoiding the problem of unstable heating effect caused by uneven distribution of the heating wire 3, and improving the consistency and overall quality of the product; at the same time, the provision of multiple groups of spacing fixing components makes the present invention suitable for various types of fan blade molds, has a broad application prospect, and can meet the requirements of molds of different shapes and sizes; in addition, each spacing fixing buckle 2 described in the present invention is provided with a glue discharge through hole 203, which can effectively reduce the accumulation of excess glue, avoid problems such as spacing deviation and improper installation caused by excessive glue, and ensure the accuracy of the installation of the spacing fixing buckle 2.

[0056] In this embodiment, each end fixing buckle 1 is bonded or screwed to the fan blade mold.

[0057] In this embodiment, the height is set to be equal to the height of each first beam 102 .

[0058] The embodiment of the present invention comprises the following steps:

[0059] 1) According to the length of the heating wire 3 and the size of the required heating range, the number of end fixing buckles 1 required is calculated; wherein the number n of the required end fixing buckles 1 is obtained by rounding 2L / l, wherein L is the total length of the heating wire 3 and l is the width of the heating range;

[0060] 2) Two sets of end fixing assemblies with n number of end fixing buckles 1 are folded by breaking the folding groove 1023 of the first crossbeam 102, and the two sets of end fixing assemblies are relatively installed on the surface of the fan blade mold so that the end fixing buckles 1 are staggered in pairs;

[0061] 3) The heating wire 3 is wound and fixed in sequence in the heating wire fixing gaps of the two sets of end fixing buckles 1 and fixed;

[0062] 4) Observe the heating wire 3 after being wound and fixed. If the heating wire 3 is unevenly distributed due to the excessive heating range, or the height of the heating wire 3 from the surface of the fan blade mold is greater than the set height due to the uneven surface of the fan blade mold, multiple groups of spacing fixing components with a specific number of spacing fixing buckles 2 are obtained by breaking the second crossbeam 204, and glue is dripped on the heating wire 3 with uneven spacing or too large distance from the surface of the fan blade mold. Each group of spacing fixing components is covered on the top of each heating wire 3, so that each fixing groove 202 is surrounded by the outer surface of the heating wire 3; after adjusting the relative position of each heating wire 3 to the set position through each fixing groove 202, press each cover plate 201 to discharge the glue along the glue discharge through hole 203. After the glue is solidified, the heating wire 3 is evenly fixed to the surface of the fan blade mold.

[0063] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A fan blade mold heating wire fixing device, characterized in that: It comprises end fixing components which are arranged opposite to each other and are used to fix the upper and lower ends of the heating wire (3), and a plurality of groups of spacing fixing components which are used to fix the middle section of the heating wire (3); The end fixing assembly comprises a plurality of end fixing buckles (1) which are detachably connected in sequence via a first cross beam (102); each end fixing buckle (1) comprises a plurality of fixing buckle bodies placed horizontally, the upper surface of each fixing buckle body is provided with a flange plate (104) extending outward, the lower surface of the flange plate (104), the side surface of the fixing buckle body and the upper surface of the first cross beam (102) are arranged to form a heating wire fixing gap; the width of the flange plate (104) is consistent with the width of the fixing buckle column; The spacing fixing assembly comprises a plurality of spacing fixing buckles (2) which are detachably connected in sequence via a second crossbeam (204); each spacing fixing buckle (2) comprises a cover plate (201) which is horizontally arranged above the heating wire (3); a fixing groove (202) which passes through both sides of the cover plate (201) is provided on the lower surface of the cover plate (201); the direction of the fixing groove (202) is arranged perpendicular to the direction of the second crossbeam (204); and a glue discharge through hole (203) which passes through the fixing groove (202) is also provided on the upper surface of the cover plate (201).

2. The fan blade mold heating wire fixing device according to claim 1 is characterized in that: The fixing buckle body comprises a horizontally placed rectangular column (101), the left and right sides of the rectangular column (101) are respectively connected to the first crossbeam (102); and a semicircular column (103) having the same height as the rectangular column (101) is provided on the rear side of the rectangular column (101).

3. The fan blade mold heating wire fixing device according to claim 2 is characterized in that: The first crossbeam (102) comprises a breaking portion (1022), and two ends of the breaking portion (1022) are respectively connected to the side edges of the corresponding rectangular column (101) through connecting portions (1021); and a breaking groove (1023) perpendicular to the length direction of the first crossbeam (102) is provided on the upper surface of the breaking portion (1022).

4. The fan blade mold heating wire fixing device according to claim 3 is characterized in that: The flange plate (104) is coaxially arranged on the upper surface of the semicircular cylinder (103); the side surface of the flange plate (104) is provided with a flange edge extending outwardly along the arc-shaped surface of the semicircular cylinder (103).

5. The fan blade mold heating wire fixing device according to claim 4 is characterized in that: The first crossbeam (102) has a width of 1.5 mm and a length of 7 mm; the second crossbeam (204) has a width of 2 mm and a length of 5 mm.

6. The fan blade mold heating wire fixing device according to claim 5, characterized in that: A chamfer is also provided above each cover plate (201) and is arranged perpendicularly to the length direction of each second cross beam (204).

7. The fan blade mold heating wire fixing device according to claim 6, characterized in that: The depth of the fracture groove (1023) is 1.5 mm.

8. A method for fixing a fan blade mold heating wire based on the fan blade mold heating wire fixing device as claimed in any one of claims 1 to 7, characterized in that: The steps include: 1) Calculating the required number of end fixing buckles (1) according to the length of the heating wire (3); 2) folding a specific number of two sets of end fixing components through the first crossbeam (102), and installing the two sets of end fixing components on the surface of the fan blade mold relative to each other, so that the end fixing buckles (1) are arranged in pairs; 3) winding the heating wire (3) in sequence and fixing it in the heating wire fixing gaps of the two sets of end fixing buckles (1); 4) Observe the heating wire (3) after winding, if there are heating wires (3) with uneven spacing or with a height greater than a set height from the surface of the fan blade mold, then fold a specific number of multiple sets of spacing fixing components through the second crossbeam (204), drip glue on the heating wires (3) with uneven spacing or with a height greater than a set height from the surface of the fan blade mold, and buckle each spacing fixing buckle (2) above the heating wire (3) so that each fixing groove (202) is arranged outside the heating wire (3); press each cover plate (201) so that the glue is discharged along the glue discharge through hole (203), and the heating wire (3) is evenly fixed to the surface of the fan blade mold.

9. The method for fixing the fan blade mold heating wire according to claim 8, characterized in that: Each end fixing buckle (1) is bonded or screwed to the fan blade mold.

10. The method for fixing the heating wire of a fan blade mold according to claim 9, characterized in that: The height is set to be equal to the height of each first beam (102).

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