A preforming device of glass fiber pultrusion plate for wind power blade girder

Abstract

The application belongs to the technical field of wind power blade girder production, and particularly discloses a preforming device for a glass fiber pultrusion plate for a wind power blade girder, which comprises an outer material guide cover and an inner heating square tube, the inner heating square tube is located inside the outer material guide cover, the rear side of the outer material guide cover extends to the middle part of the inner heating square tube, the front side of the inner heating square tube is flush with the front side of the outer material guide cover, and a gap is left between the outer surface of the inner heating square tube and the inner wall of the outer material guide cover, when the girder plate blank enters from the inlet of the inner heating square tube, the top and bottom of the girder plate blank will be scraped, and at the same time, due to the rebound of the compacted girder plate blank, the distance between the upper and lower cross sections of the girder plate blank will be increased to trigger the feedback assembly to move, and the leaf plate will cut the rebounding part, thereby preventing the scraping phenomenon, and at the same time, due to the gap between the outer material guide cover and the inner heating square tube, the edge and corner materials generated by cutting can be stored in the gap, and subsequent cleaning is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power blade girder production, and particularly relates to a preforming device for a glass fiber pultrusion plate for a wind power blade girder. BACKGROUND

[0002] The wind power blade is a core component for converting natural wind energy into wind power generator set electric energy in a wind power generator set, and is a main basis for measuring the design and technical level of the wind power generator set. When the wind power blade is produced, the girder part is a main load-bearing component. When the girder plate is produced, the glass fiber after the demolding cloth process needs to be pultrusion preformed, so as to facilitate subsequent traction and conveying.

[0003] At present, when the glass fiber after the demolding cloth process is pultrusion preformed, a mold is usually used to preform the glass fiber, and then the preformed glass fiber is cured by heating. However, the glass fiber after the demolding cloth process has many burrs on the outer surface. Before entering the mold, the burrs at the edge are prone to scratching the mold opening, resulting in uneven outer surface, and the glass fiber scraped off is accumulated in the mold opening and is not convenient to clean. SUMMARY

[0004] The present application provides a preforming device for a glass fiber pultrusion plate for a wind power blade girder to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a preforming device for a glass fiber pultrusion plate for a wind power blade girder, comprising an outer material guide cover and an inner heating square tube, the inner heating square tube is located inside the outer material guide cover, the rear side of the outer material guide cover extends to the middle part of the inner heating square tube, the front side of the inner heating square tube is flush with the front side of the outer material guide cover, a gap is left between the outer surface of the inner heating square tube and the inner wall of the outer material guide cover, and the front side of the outer material guide cover is provided with a pre-pressing assembly.

[0006] The front side of the inner heating square tube is provided with a front notch near the top and bottom edges, the two front notches penetrate into the interior of the inner heating square tube, the two inner heating square tubes are provided with leaf plates inside, and one side of the outer material guide cover is provided with a girder plate blank.

[0007] Preferably, the rear side of each of the two leaf plates is fixed with a torque hinge, the rear side of each of the two torque hinges is fixed on the rear side of the inner wall of the front notch, each of the two leaf plates is inclined, and the front side of each of the two leaf plates is inclined to extend to the inner wall of the inner heating square tube flush.

[0008] Preferably, the pre-pressing assembly comprises two front plates, which are respectively arranged on the front side of the outer material guide cover near the top and bottom edges, and the outer surfaces of the two sides of the two front plates are provided with adjusting blocks, and the opposite sides of the two front plates are rotatably connected with side guide compression rollers near the edges of the outer surfaces of the two sides.

[0009] Preferably, the outer surfaces of the two side guide compression rollers near the top and bottom edges are provided with annular grooves, the two adjusting blocks on each front plate form a group, and the opposite sides of the two adjusting blocks in each group are provided with sliding cavities, and the sliding cavities are internally and slidably provided with sliding blocks.

[0010] Preferably, the opposite sides of the two sliding blocks on each group of adjusting blocks are rotatably provided with horizontal compression rollers, the horizontal compression rollers are internally and on the side of the annular grooves near the two ends, the outer surfaces of the two horizontal compression rollers are flush with the top inner wall and the bottom inner wall of the inner heating square tube, the outer surfaces of the two horizontal compression rollers and the outer surfaces of the side guide compression rollers are in rolling and pressing contact with the outer surface of the main beam plate blank, the interior of the adjusting block is provided with an adjusting assembly, and the interior of the adjusting block near one side is provided with a feedback assembly.

[0011] Preferably, the adjusting assembly comprises a hexagonal pressing plate, the interior of the adjusting block is provided, above the sliding cavity, with a hexagonal cavity, the hexagonal pressing plate is slidably arranged between the inner walls of the hexagonal cavity, the top of the hexagonal pressing plate is rotatably connected with an adjusting screw, the top of the adjusting screw is threadedly penetrated to the upper side of the adjusting block, and the top of the adjusting screw is provided with a hexagonal socket.

[0012] Preferably, the inner walls of the hexagonal cavity are slidably provided with a hexagonal sliding plate, the hexagonal sliding plate is below the hexagonal pressing plate, the bottom of the hexagonal sliding plate is fixedly provided with a connecting rod in the middle, the bottom of the connecting rod is slidably penetrated to the interior of the sliding cavity, and the bottom of the connecting rod is fixed to the top of the sliding block.

[0013] Preferably, the bottom of the hexagonal sliding plate is fixedly provided with a pressing spring, the bottom of the pressing spring is fixed to the inner bottom surface of the hexagonal cavity, the top of the hexagonal sliding plate is fixedly provided with a reverse adjusting spring, the top of the reverse adjusting spring is fixed to the bottom of the hexagonal pressing plate, and the elastic coefficient of the reverse adjusting spring is greater than that of the pressing spring.

[0014] Preferably, the feedback assembly comprises a middle adjusting gear, the interior of the adjusting block is provided, near one side edge, with a transmission cavity, one side of the transmission cavity is penetrated to the interior of the sliding cavity, the middle adjusting gear is rotatably arranged in the interior of the transmission cavity, one side surface of the adjusting block is provided with a side sliding channel, the bottom of the side sliding channel is penetrated to the bottom of the adjusting block, the transmission cavity and the side sliding channel are in communication with each other, one side surface of the middle adjusting gear extends to the interior of the sliding cavity, and the other side surface of the middle adjusting gear extends to the interior of the side sliding channel.

[0015] Preferably, the inner walls on both sides of the side slide way are provided with limiting openings, the inside of the side slide way is provided with a first rack, the outer surfaces of the two sides of the first rack are fixed with limiting blocks near the top edges, the two limiting blocks are slidably clamped in the inside of the limiting opening, the first rack is in mesh with the middle adjusting gear, one side of the sliding block is fixed with a second rack, the second rack is in mesh with the middle adjusting gear, the top of the first rack is fixed with a bending pressing rod, the bottom of the bending pressing rod extends to the top of the leaf plate, and the bottom of the bending pressing rod is provided with an arc surface which is in close contact with the top of the leaf plate.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1、The main beam plate blank is sent into the inside of the inner heating square tube for heating and solidification after being compacted by the pre-pressing assembly from one end of the outer material guide cover, the pressing force is changed by the adjusting assembly during the working process of the pre-pressing assembly, and since the horizontal pressing roller is flexibly arranged, when the main beam plate blank rebounds after being compacted, the distance between the upper and lower cross sections of the main beam plate blank is larger than the distance between the upper and lower cross sections of the inner heating square tube, so that the top and bottom of the main beam plate blank are scraped when entering from the inlet of the inner heating square tube, and the rebounding of the main beam plate blank after being compacted causes the distance between the upper and lower cross sections to increase, so that the feedback assembly is actuated to cut the rebounding part by the leaf plate, thereby preventing the scraping phenomenon, and since there is a gap between the outer material guide cover and the inner heating square tube, the edge scraps generated by cutting are stored in the gap, and subsequent cleaning is facilitated.

[0018] 2、During the working process of the pre-pressing assembly, the two sides of the main beam plate blank are compacted by the side guide pressing roller, and the top and bottom of the main beam plate blank are compacted by the horizontal pressing roller, and since the side guide pressing roller is rigidly arranged and the horizontal pressing roller is flexibly arranged, when the main beam plate blank is pre-extruded, the two sides of the main beam plate blank will not be elastically deformed too much, the excess amount of the main beam plate blank is pushed to the upper and lower sides, so that the upper and lower sides of the main beam plate blank expand outward, when the expansion force is less than the maximum pressing force set by the adjusting assembly, the excess amount generated by extrusion is compacted in the middle part of the main beam plate blank, and when the expansion force is greater than the maximum pressing force set by the adjusting assembly, the excess amount generated by extrusion expands to the upper and lower sides of the main beam plate blank, thereby actuating the feedback assembly to work.

[0019] 3、The adjusting assembly in the present application works, by rotating the adjusting bolt, the hexagonal pressing plate can slide downward to compress the reverse adjusting spring, because the elastic coefficient of the reverse adjusting spring is greater than that of the pressing spring, when the reverse adjusting spring is compressed, it will push the hexagonal slide plate downward to compress the pressing spring, and the compression stroke of the reverse adjusting spring under the elastic force is smaller than that of the pressing spring, so when the main beam plate blank expands upward and downward, the horizontal pressing roller slides upward, and then the slide block, connecting rod and hexagonal slide plate slide upward, at this time, the reverse adjusting spring is further compressed under the upward sliding of the hexagonal slide plate, and a greater thrust is generated to protect and buffer the whole adjusting mechanism;

[0020] 4、The feedback assembly in the present application works, when working normally, the slide block does not slide upward, the arc surface of one end of the bending pressing rod extends to the position where it is attached to the top of the leaf plate, at this time, the cutting edge part of one end of the leaf plate is above the inner wall of the inner heating square tube and does not cut the main beam plate blank entering the inner heating square tube, when the main beam plate blank expands upward and downward, the slide block slides upward to drive the second rack to rotate the middle adjusting gear, and then the first rack slides downward to drive the bending pressing rod to slide downward, when the bending pressing rod slides downward, the arc surface of one end of the bending pressing rod presses the end of the leaf plate with the cutting edge into the inner part of the inner heating square tube, so that the cutting edge can cut the excess part of the main beam plate blank expanding upward and downward, avoiding scratching when entering the inner heating square tube. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A side view schematic diagram of the preforming device for the glass fiber pultrusion plate for the main beam of the wind power blade is provided for the present application;

[0022] Figure 2 Another side view schematic diagram of the preforming device for the glass fiber pultrusion plate for the main beam of the wind power blade is provided for the present application;

[0023] Figure 3 A side view schematic diagram of the preforming device for the glass fiber pultrusion plate for the main beam of the wind power blade is provided for the present application;

[0024] Figure 4 Another side view schematic diagram of the preforming device for the glass fiber pultrusion plate for the main beam of the wind power blade is provided for the present application;

[0025] Figure 5 A partial sectional view schematic diagram of the adjusting assembly in the preforming device for the glass fiber pultrusion plate for the main beam of the wind power blade is provided for the present application;

[0026] Figure 6To propose a kind of preforming device for glass fiber pultrusion plate of wind power blade girder, the partial sectional view of the feedback component is shown in the schematic diagram of the partial sectional view of the feedback component

[0027] Figure 7 To propose a kind of preforming device for glass fiber pultrusion plate of wind power blade girder, the partial sectional view of the feedback component is shown in the schematic diagram of the partial sectional view of the feedback component Figure 5 The partial enlarged view of A in the present application is shown in the schematic diagram of the partial sectional view of the feedback component

[0028] Figure 8 To propose a kind of preforming device for glass fiber pultrusion plate of wind power blade girder, the partial sectional view of the feedback component is shown in the schematic diagram of the partial sectional view of the feedback component Figure 6 The partial enlarged view of B in the present application is shown in the schematic diagram of the partial sectional view of the feedback component

[0029] In the figure: 1, outer guide cover; 2, inner heating square tube; 3, front plate; 4, adjusting block; 5, main beam plate blank; 6, front notch; 7, leaf plate; 8, side guide compression roller; 9, annular groove; 10, horizontal compression roller; 11, bending compression rod; 12, sliding cavity; 13, sliding block; 14, hexagonal cavity; 15, hexagonal compression plate; 16, hexagonal sliding plate; 17, reverse adjusting spring; 18, compression spring; 19, adjusting screw; 20, connecting rod; 21, transmission cavity; 22, side slide; 23, limit port; 24, limit block; 25, first rack; 26, middle adjusting gear; 27, second rack; 28, hexagonal bayonet; 29, arc surface; 30, cutting edge; 31, torque hinge. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to Figures 1-8 The present application provides a technical solution: a preforming device for glass fiber pultrusion plate of wind power blade girder, comprising an outer guide cover 1 and an inner heating square tube 2, the inner heating square tube 2 is located inside the outer guide cover 1, the rear side of the outer guide cover 1 extends to the middle part of the inner heating square tube 2, the front side of the inner heating square tube 2 is flush with the front side of the outer guide cover 1, there is a gap between the outer surface of the inner heating square tube 2 and the inner wall of the outer guide cover 1, and the front side of the outer guide cover 1 is provided with a pre-compression assembly.

[0032] The front side of the inner heating square tube 2 is provided with a front notch 6 near the top and bottom edges, and the two front notches 6 penetrate into the inside of the inner heating square tube 2. The inside of the two inner heating square tubes 2 is provided with a leaf plate 7. One side of the outer material guide cover 1 is provided with a main beam plate blank. The rear side of the two leaf plates 7 is fixed with a torque hinge 31. The rear side of the two torque hinges 31 is fixed on the rear side inner wall of the front notch 6. The two leaf plates 7 are inclinedly arranged, and the front side of the two leaf plates 7 is inclinedly extended to the inner wall of the inner heating square tube 2. The front side of the two leaf plates 7 is provided with a cutting edge 30.

[0033] The effect achieved is that the main beam plate blank 5 is sent into the inside of the inner heating square tube 2 for heating and curing after being compacted by the pre-pressing assembly from one end of the outer material guide cover 1. In the working process of the pre-pressing assembly, the pressing force is changed by the adjusting assembly, and because the horizontal pressing roller 10 is flexibly arranged, when the main beam plate blank 5 rebounds after being compacted, the distance between the upper and lower cross sections of the main beam plate blank 5 will be larger than the distance between the upper and lower cross sections of the inner heating square tube 2. Therefore, the top and bottom of the main beam plate blank 5 will be scraped when entering from the inlet of the inner heating square tube 2. At the same time, because the rebound of the main beam plate blank 5 after being compacted makes the distance between the upper and lower cross sections larger, the feedback assembly is triggered to move the leaf plate 7 to cut the rebounding part, thereby preventing the scraping phenomenon, and because there is a gap between the outer material guide cover 1 and the inner heating square tube 2, the cutting edge will be stored in the gap, which is convenient for subsequent cleaning.

[0034] As shown in Figure 1 , Figure 3 and Figure 4 , the pre-pressing assembly includes two front plates 3, which are respectively arranged on the front side of the outer material guide cover 1 near the top and bottom edges. The two sides of the outer surface of the two front plates 3 are provided with adjusting blocks 4. The opposite side between the two front plates 3 is rotatably connected with a side guide pressing roller 8 near the edge of the outer surface. The outer surface of the two side guide pressing rollers 8 is correspondingly flush with the inner wall of the inner heating square tube 2. The outer surface of the two side guide pressing rollers 8 is provided with a ring groove 9 near the top and bottom edges. The two adjusting blocks 4 on each front plate 3 form a group. The opposite side of each group of two adjusting blocks 4 is provided with a sliding cavity 12. The inside of the plurality of sliding cavities 12 is slidably provided with a sliding block 13. The opposite side of the two sliding blocks 13 on each group of adjusting blocks 4 is rotatably provided with a horizontal pressing roller 10. The horizontal pressing roller 10 is located on the inside of the ring groove 9 near the two ends. The outer surface of the two horizontal pressing rollers 10 is correspondingly flush with the top and bottom inner walls of the inner heating square tube 2. The outer surfaces of the two horizontal pressing rollers 10 and the outer surfaces of the side guide pressing rollers 8 are in rolling and pressing contact with the outer surface of the main beam plate blank 5. The inside of the adjusting block 4 is provided with an adjusting assembly. The inside of the adjusting block 4 is provided with a feedback assembly near one side.

[0035] The achieved effect is that the two sides of the main beam plate blank 5 are compacted by the side guide compression roller 8, and the top and bottom of the main beam plate blank 5 are compacted by the horizontal compression roller 10. Since the side guide compression roller 8 is rigidly installed, and the horizontal compression roller 10 is flexibly installed, when the main beam plate blank 5 is pre-extruded, the two sides of the main beam plate blank 5 will not be elastically deformed too much. The excess of the main beam plate blank 5 is pushed to the upper and lower sides during extrusion, so that the upper and lower sides of the main beam plate blank 5 expand outward. When the expansion force does not reach the maximum compression force set by the adjusting assembly, the excess generated by extrusion will be compacted in the middle part of the main beam plate blank 5. When the expansion force is greater than the maximum compression force set by the adjusting assembly, the excess generated by extrusion will expand to the upper and lower sides of the main beam plate blank 5, thereby triggering the feedback assembly to work.

[0036] As shown in Figure 1 , Figure 5 and Figure 7 , the adjusting assembly includes a hexagonal pressing plate 15. The inside of the adjusting block 4 is provided with a hexagonal cavity 14 above the sliding cavity 12. The hexagonal pressing plate 15 is slidingly arranged between the inner walls of the hexagonal cavity 14. The top of the hexagonal pressing plate 15 is rotatably connected with an adjusting screw 19. The top of the adjusting screw 19 is threaded to the upper side of the adjusting block 4. The top of the adjusting screw 19 is provided with a hexagonal socket 28. A hexagonal sliding plate 16 is slidingly arranged between the inner walls of the hexagonal cavity 14. The hexagonal sliding plate 16 is located below the hexagonal pressing plate 15. A connecting rod 20 is fixed to the bottom of the hexagonal sliding plate 16. The bottom of the connecting rod 20 slidingly penetrates into the inside of the sliding cavity 12 and is fixed to the top of the sliding block 13. A compression spring 18 is fixed to the bottom of the hexagonal sliding plate 16. The bottom of the compression spring 18 is fixed to the inner bottom surface of the hexagonal cavity 14. A counter-adjusting spring 17 is fixed to the top of the hexagonal sliding plate 16. The top of the counter-adjusting spring 17 is fixed to the bottom of the hexagonal pressing plate 15. The elastic coefficient of the counter-adjusting spring 17 is greater than that of the compression spring 18.

[0037] The achieved effect is that by rotating the adjusting screw 19, the hexagonal pressing plate 15 can be driven to slide downward, so as to compress the counter-adjusting spring 17. Since the elastic coefficient of the counter-adjusting spring 17 is greater than that of the compression spring 18, when the counter-adjusting spring 17 is compressed, it will push the hexagonal sliding plate 16 downward to compress the compression spring 18. The compression stroke of the elastic force acting on the counter-adjusting spring 17 is smaller than that acting on the compression spring 18. Therefore, when the main beam plate blank 5 expands upward, it will drive the horizontal compression roller 10 to slide upward, so as to make the sliding block 13, the connecting rod 20 and the hexagonal sliding plate 16 slide upward. At this time, the counter-adjusting spring 17 is further compressed under the action of the upward sliding of the hexagonal sliding plate 16, which will generate greater thrust, thereby protecting and buffering the entire adjusting mechanism.

[0038] As shown in Figure 1 ,Figure 6 and Figure 8 As shown in the figure, the feedback assembly comprises a middle adjusting gear 26, a transmission cavity 21 is arranged at the inner side of the adjusting block 4 close to one side edge, one side of the transmission cavity 21 penetrates into the inner side of the sliding cavity 12, the middle adjusting gear 26 is rotationally arranged in the inner side of the transmission cavity 21, a side sliding channel 22 is arranged on the outer side of one side of the adjusting block 4, the bottom of the side sliding channel 22 penetrates into the bottom of the adjusting block 4, the transmission cavity 21 and the side sliding channel 22 are in communication with each other, the outer side of one side of the middle adjusting gear 26 extends into the inner side of the sliding cavity 12, the outer side of the other side of the middle adjusting gear 26 extends into the inner side of the side sliding channel 22, the inner sides of the two side walls of the side sliding channel 22 are both provided with a limiting opening 23, a first rack 25 is slidingly arranged in the inner side of the side sliding channel 22, the outer sides of the two side walls of the first rack 25 are both fixed with a limiting block 24 close to the top edge, the two limiting blocks 24 are both slidingly clamped in the inner side of the limiting opening 23, the first rack 25 and the middle adjusting gear 26 are in meshing with each other, the side of the sliding block 13 is fixed with a second rack 27, the second rack 27 and the middle adjusting gear 26 are in meshing with each other, the top of the first rack 25 is fixed with a bending pressing rod 11, the bottom of the bending pressing rod 11 extends to the top of the leaf plate 7, and the bottom of the bending pressing rod 11 is provided with an arc surface 29, the arc surface 29 and the top of the leaf plate 7 are in mutual adhesion.

[0039] The achieved effect is that the sliding block 13 will not slide upward in normal working state, the arc surface 29 of one end of the bending pressing rod 11 extends to the position of adhesion with the top of the leaf plate 7, at this time, the cutting edge 30 of one end of the leaf plate 7 will not produce cutting action on the main beam plate blank 5 entering the inner heating square tube 2, when the main beam plate blank 5 expands up and down, the sliding block 13 slides upward will drive the middle adjusting gear 26 to rotate through the second rack 27, and then drive the first rack 25 to slide downward through the middle adjusting gear 26, so that the bending pressing rod 11 slides downward, the arc surface 29 of one end of the bending pressing rod 11 will press the end of the leaf plate 7 with the cutting edge 30 into the inner side of the inner heating square tube 2, so that the main beam plate blank 5 can be cut by the cutting edge 30, and the excess part of the main beam plate blank 5 expanding up and down can be cut, so as to avoid scratching when entering the inner heating square tube 2.

[0040] Working principle: when using the device, the two sides of the main beam plate blank 5 are compacted by the side guide compression roller 8, and the top and bottom of the main beam plate blank 5 are compacted by the horizontal compression roller 10. Since the side guide compression roller 8 is rigidly installed, and the horizontal compression roller 10 is flexibly installed, when the main beam plate blank 5 is pre-extruded, the two sides of the main beam plate blank 5 will not be deformed too much. The excess of the main beam plate blank 5 will be pushed to the upper and lower sides, and then the upper and lower sides of the main beam plate blank 5 will expand outward. When the expansion force does not reach the maximum compression force set by the adjusting assembly, the excess generated by the extrusion will be compacted in the middle of the main beam plate blank 5. When the expansion force is greater than the maximum compression force set by the adjusting assembly, the excess generated by the extrusion will expand to the upper and lower sides of the main beam plate blank 5, and then trigger the feedback assembly to work. By rotating the adjusting bolt 19, the hexagonal pressing plate 15 can be driven to slide downward, so as to compress the anti-adjusting spring 17. Since the elastic coefficient of the anti-adjusting spring 17 is greater than that of the compression spring 18, when the anti-adjusting spring 17 is compressed, it will push the hexagonal sliding plate 16 downward to compress the compression spring 18. The elastic force acting on the anti-adjusting spring 17 is smaller than the compression stroke of the compression spring 18, so when the main beam plate blank 5 expands upward, it will drive the horizontal compression roller 10 to slide upward, and then the sliding block 13, the connecting rod 20 and the hexagonal sliding plate 16 will slide upward. At this time, the anti-adjusting spring 17 is further compressed under the action of the upward sliding of the hexagonal sliding plate 16, which will generate a greater thrust to protect and buffer the entire adjusting mechanism. When working normally, the sliding block 13 will not slide upward, and the arc surface 29 at one end of the bending compression rod 11 extends to the position where it is in contact with the top of the leaf plate 7. At this time, the cutting edge 30 of one end of the leaf plate 7 is above the inner wall of the inner heating square tube 2 and will not cut the main beam plate blank 5 entering the inner heating square tube 2. When the main beam plate blank 5 expands upward, the upward sliding of the sliding block 13 will drive the middle adjusting gear 26 to rotate through the second rack 27, and then drive the first rack 25 to slide downward through the middle adjusting gear 26, so as to drive the bending compression rod 11 to slide downward. When the bending compression rod 11 slides downward, the arc surface 29 at one end of the bending compression rod 11 will press the end of the leaf plate 7 with the cutting edge 30 into the inner heating square tube 2, so that the cutting edge 30 can cut off the excess part of the main beam plate blank 5 expanding upward, avoiding scratching when entering the inlet of the inner heating square tube 2.

[0041] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A preforming device for glass fiber pultruded panels for wind turbine blade spars, characterized in that, The utility model provides a kind of pre-pressing assembly and inner heating square tube, comprising outer guide cover (1) and inner heating square tube (2), the inner heating square tube (2) is located in the inside of outer guide cover (1), the rear side of outer guide cover (1) extends to the middle part of inner heating square tube (2), the front side of inner heating square tube (2) and the front side of outer guide cover (1) are mutually flush, the outer surface of inner heating square tube (2) and the inner wall of outer guide cover (1) are left with gap, the front side of outer guide cover (1) is provided with pre-pressing assembly; The front side of the inner heating square tube (2) is provided with a front notch (6) near the top and bottom edges, the two front notches (6) penetrate into the inner heating square tube (2), the two inner heating square tubes (2) are provided with leaf plates (7), one side of the outer guide cover (1) is provided with a main beam plate blank (5), the rear side of the two leaf plates (7) is fixed with a torque hinge (31), the rear side of the two torque hinges (31) is fixed on the rear side of the inner wall of the front notch (6), the two leaf plates (7) are inclined, and the front side of the two leaf plates (7) is inclined to extend to the inner wall of the inner heating square tube (2) flush, the front side of the two leaf plates (7) is provided with a cutting edge (30), the pre-pressing assembly includes two front plates (3), the two front plates (3) are installed near the top and bottom edges of the front side of the outer guide cover (1), the two sides of the outer surface of the two front plates (3) are provided with adjusting blocks (4), the opposite side of the two front plates (3) is rotatably connected with a side guide compression roller (8) near the edges of the two sides of the outer surface, the side of the outer surface of the two side guide compression rollers (8) is flush with the two sides of the inner wall of the inner heating square tube (2), the outer surface of the two side guide compression rollers (8) is provided with an annular groove (9) near the top and bottom edges, the two adjusting blocks (4) on each front plate (3) form a group, the opposite side of the two adjusting blocks (4) in each group is provided with a sliding cavity (12), the sliding cavities (12) are slidably provided with sliding blocks (13), the opposite side of the two sliding blocks (13) on each group of adjusting blocks (4) is rotatably provided with a horizontal compression roller (10), the horizontal compression rollers (10) are located on the inner side of the annular groove (9) near the two ends, the outer surfaces of the two horizontal compression rollers (10) are flush with the top and bottom inner walls of the inner heating square tube (2), the outer surfaces of the two horizontal compression rollers (10) and the outer surfaces of the side guide compression rollers (8) are in rolling and pressing contact with the outer surface of the main beam plate blank (5), the adjusting block (4) is provided with an adjusting assembly, the adjusting block (4) is provided with a feedback assembly near one side. The adjusting assembly includes a hexagonal pressing plate (15), a hexagonal cavity (14) is opened above the inside of the adjusting block (4) and located in the sliding cavity (12), the hexagonal pressing plate (15) is slidingly arranged between the inner walls of the hexagonal cavity (14), the top of the hexagonal pressing plate (15) is rotationally connected with an adjusting screw rod (19), the top of the adjusting screw rod (19) is threaded through to the top of the adjusting block (4), and the top of the adjusting screw rod (19) is provided with a hexagonal socket (28); The feedback assembly includes a middle adjusting gear (26), the inside of the adjusting block (4) is provided with a transmission cavity (21) near one side edge, one side of the transmission cavity (21) penetrates into the inside of the sliding cavity (12), the middle adjusting gear (26) is rotationally arranged in the inside of the transmission cavity (21), one side outer surface of the adjusting block (4) is provided with a side sliding channel (22), the bottom of the side sliding channel (22) penetrates into the bottom of the adjusting block (4), the transmission cavity (21) and the side sliding channel (22) are in communication with each other, one side outer surface of the middle adjusting gear (26) extends into the inside of the sliding cavity (12), and the other side outer surface of the middle adjusting gear (26) extends into the inside of the side sliding channel (22).

2. A preforming device for a glass fiber pultruded plate for a wind turbine blade girder according to claim 1, characterized in that: The hexagonal sliding plate (16) is slidingly arranged between the inner walls of the hexagonal cavity (14), the bottom of the hexagonal sliding plate (16) is located below the hexagonal pressing plate (15), the bottom of the hexagonal sliding plate (16) is fixed with a connecting rod (20) at the middle, the bottom of the connecting rod (20) slidingly penetrates into the inside of the sliding cavity (12), and the bottom of the connecting rod (20) is fixed to the top of the sliding block (13).

3. A preforming device for a glass fiber pultruded plate for a wind turbine blade girder according to claim 2, characterized in that: The bottom of the hexagonal sliding plate (16) is fixed with a pressing spring (18), the bottom of the pressing spring (18) is fixed to the inner bottom surface of the hexagonal cavity (14), the top of the hexagonal sliding plate (16) is fixed with a reverse adjusting spring (17), the top of the reverse adjusting spring (17) is fixed to the bottom of the hexagonal pressing plate (15), and the elastic coefficient of the reverse adjusting spring (17) is greater than that of the pressing spring (18).

4. The preforming device of a glass fiber pultrusion plate for a wind turbine blade girder according to claim 3, characterized in that: Both side inner walls of the side sliding channel (22) are provided with a limiting opening (23), the inside of the side sliding channel (22) is slidingly provided with a first rack (25), both side outer surfaces of the first rack (25) are fixed with a limiting block (24) near the top edge, both limiting blocks (24) are slidingly engaged in the inside of the limiting opening (23), the first rack (25) and the middle adjusting gear (26) are in meshing connection, one side of the sliding block (13) is fixed with a second rack (27), the second rack (27) and the middle adjusting gear (26) are in meshing connection, the top of the first rack (25) is fixed with a bent pressing rod (11), the bottom of the bent pressing rod (11) extends to the top of the leaf plate (7), and the bottom of the bent pressing rod (11) is provided with an arc surface (29), and the arc surface (29) and the top of the leaf plate (7) are in mutual adhesion.

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