A device for cutting whisker-like fibers at the ends of glass fiber cloth

Abstract

The present invention discloses a device for shearing whisker-like fibers at the ends of glass fiber cloth, comprising a frame, a lower blade with an upward-facing cutting edge fixed to the frame, and an upper blade with a downward-facing cutting edge movably mounted on the frame. The cutting edge of the upper blade and the cutting edge of the lower blade are respectively located on two adjacent planes. Before shearing, there is a gap between at least one end of the upper blade and the lower blade for the end of the glass fiber cloth to be inserted. When the upper blade falls, it can fit in a shearing manner with the lower blade. The upper blade has a plurality of teeth with equal cutting edge lengths arranged at equal intervals. When used, the cutting edges of the alternate teeth on the upper blade fit in with the cutting edge of the lower blade to shear off a portion of the whisker-like fibers at the ends of the glass fiber cloth. The advantages are: the shearing efficiency is significantly improved, the shearing is uniform, the structure is simple, and it is easy to operate.

Description

Technical Field

[0001] The invention relates to a device for cutting whisker-shaped fibers at the ends of glass fiber cloth, and belongs to the technical field of pretreatment of glass fiber cloth for wind turbine blades before dipping. Background Art

[0002] Wind power is developing rapidly, and the trend toward larger blades is becoming increasingly common in the industry. At the same wind speed, longer blades increase the wind sweep area and power generation. Over the past three years, blade size has rapidly increased from 60m to approximately 100m, reducing the design margin required for blade production and increasing production process requirements.

[0003] The beam is a key component for ensuring the strength of the entire blade. It's made of dozens of layers of fiberglass cloth of varying lengths and a surface density of 1800g / ㎡, which are then laid together and impregnated with glue and cured. This type of fiberglass cloth is relatively thick, and after vacuum infusion molding, the thickness increases at the starting and ending points of each layer. This area is prone to stress concentration, leading to the risk of product breakage. Therefore, the fiber thickness of the cloth layers at the starting and ending points must be thinned manually to less than 1mm. This involves cutting off a portion of the whisker-like fibers at the starting and ending points of the cloth layer, removing them, reducing the total thickness of the whisker-like fibers at the starting and ending points. However, this manual thinning method often results in uneven thinning thickness, uneven cutting, and low efficiency. Therefore, a cutting tool is needed to effectively address these issues, improve efficiency, and ensure the quality of the cloth layer cutting. Summary of the Invention

[0004] The technical problem to be solved by the present invention is how to solve the problem of uneven and uneven whisker-like fibers at the starting and ending points of manually thinning a cloth layer and low efficiency.

[0005] In view of the above problems, the technical solution proposed by the present invention is:

[0006] A device for extracting and shearing whiskers from the ends of fiberglass cloth comprises a frame, a lower blade fixed to the frame with its cutting edge facing upward, and an upper blade movably mounted on the frame with its cutting edge facing downward. The cutting edges of the upper blade and the lower blade are located on two adjacent planes. Before shearing, there is a gap between at least one end of the upper blade and the lower blade for the end of the fiberglass cloth to fit into. When the upper blade falls, it can engage with the lower blade in a shearing manner. The upper blade has a plurality of equally spaced tooth edges of equal length. When in use, the alternate tooth edges of the upper blade engage with the cutting edge of the lower blade to shear off a portion of the whiskers from the ends of the fiberglass cloth.

[0007] The device for cutting the whisker-like fibers at the end of the glass fiber cloth also includes an upper blade mounting arm having a mounting end and a lower pressing end. The mounting end of the upper blade mounting arm is rotatably mounted on the frame through a mounting hinge, and the upper blade is detachably fixed to the upper blade mounting arm.

[0008] The device for cutting the whisker-like fibers at the end of the glass fiber cloth also includes a pressing mechanism for pressing down the lower pressing end of the upper blade mounting arm, the pressing mechanism including a pressing arm, a connecting piece, a positioning hinge, a connecting hinge one, and a connecting hinge two. The lower end of the pressing arm is rotatably mounted on the frame through the positioning hinge, one end of the connecting piece is rotatably connected to the pressing end of the upper blade mounting arm through the connecting hinge one, and the other end is rotatably connected to the middle part of the pressing arm through the connecting hinge two. The upper blade mounting arm has an angle of one with the connecting piece before cutting the fibers, and the upper end portion of the pressing arm is a wrench end that is held and pressed down by hand to rotate the pressing arm around the positioning hinge.

[0009] The mounting hinge is limited on the frame, and the upper blade and the lower blade intersect at one end close to the mounting hinge before cutting the fiber to form an angle 2. There is a gap between the upper blade and the lower blade only at the end facing the downward pressing mechanism for the end of the glass fiber cloth to be inserted.

[0010] The device for cutting the whisker-like fibers at the end of the glass fiber cloth also includes a mounting end pull-down mechanism. There is a gap between the upper blade and the lower blade for the end of the glass fiber cloth to be inserted. The mounting end of the upper blade mounting arm can fall simultaneously with the lower pressing end under the action of the mounting end pull-down mechanism.

[0011] The device for cutting the whisker-like fibers at the end of the glass fiber cloth also includes a mounting seat fixed on the frame, the mounting seat having a slide groove for mounting the mounting end of the upper blade mounting arm and for the mounting end to slide down, the walls on both sides of the slide groove are provided with waist-shaped shaft sliding holes for the mounting hinge shaft to slide up and down, the mounting end of the upper blade mounting arm is located in the slide groove, and the two ends of the mounting hinge shaft installed at the mounting end extend from the side outside of the waist-shaped shaft sliding holes on the walls on both sides of the slide groove and are connected to the pull-down component of the mounting end pull-down mechanism.

[0012] The lower end of the lower pressing arm extends downward to form a pushing arm end, and the pushing arm end provides execution power for the installation end pulling-down mechanism.

[0013] The pull-down mechanism of the mounting end includes a push rod, a turntable and a clamp-shaped pull rod, and the turntable is installed on the frame below the mounting seat through a rotating shaft. A pull-down rotating shaft and a horizontal push rotating shaft are respectively provided on the upper disk surface and the lower disk surface of the turntable on one side of the lower pressure arm. One end of the push rod is rotatably connected to the push arm end of the lower pressure arm through a connecting hinge shaft, and the other end of the push rod is rotatably connected to the turntable through a horizontal push rotating shaft. The clamp-shaped pull rod has two clamp arms, and the upper ends of the two clamp arms are respectively connected to the two ends of the mounting hinge shaft extending on both sides of the mounting seat. When in use, the wrench end of the lower pressure arm is pulled downward to make the lower pressure arm rotate around the positioning hinge shaft, so that the push arm end pushes the turntable to rotate through the push rod, and the rotation of the turntable pulls down the mounting end of the mounting arm through the clamp-shaped pull rod.

[0014] The device for cutting whisker-like fibers at the ends of glass fiber cloth further comprises a table mounted on the frame, and the lower blade is fixed on the table. Beneficial effects

[0015] 1. The shearing efficiency is significantly improved and the shearing is uniform;

[0016] 2. Simple structure;

[0017] 3. Easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the device described in Example 1;

[0019] Figure 2 It is a three-dimensional schematic diagram of the device described in Example 2;

[0020] Figure 3 This is a three-dimensional schematic diagram of the installation end pull-down mechanism described in Example 2;

[0021] Figure 4 It is a three-dimensional schematic diagram of the installation mechanism described in Example 2.

[0022] In the figure: 1. frame; 2. table; 3. upper blade; 301. toothed edge; 4. lower blade; 5. upper blade mounting arm; 501. mounting end; 502. pressing end; 6. mounting hinge; 7. pressing mechanism; 701. pressing arm; 7011. wrench end; 7012. push arm end; 702. connector; 703. positioning hinge; 704. connecting hinge one; 705. connecting hinge two; 706. angle one; 8. mounting end pull-down mechanism; 801. push rod; 802. turntable; 803. clamp-shaped pull rod; 804. rotating shaft; 805. pull-down rotating shaft; 806. horizontal push rotating shaft; 807. connecting hinge three; 9. mounting seat; 901. slide groove; 902. waist-shaped shaft sliding hole; 10. spacing; 11. angle two. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example 1

[0024] like Figure 1 As shown, a device for extracting and shearing whiskers from the ends of glass fiber cloth comprises a frame 1, a lower blade 4 fixed to the frame 1 with an upwardly directed cutting edge, and an upper blade 3 movably mounted on the frame 1 with a downwardly directed cutting edge. The cutting edges of the upper blade 3 and the lower blade 4 are located on two adjacent planes. Before shearing, there is a gap 10 between at least one end of the upper blade 3 and the lower blade 4 for the end of the glass fiber cloth to be inserted. When the upper blade 3 falls, it can engage with the lower blade 4 in a shearing manner. The device is characterized in that the upper blade 3 has a plurality of equally spaced tooth edges 301 with equal cutting edges. When in use, the cutting edges of the alternate tooth edges 301 on the upper blade 3 and the cutting edges of the lower blade 4 engage to shear and remove a portion of the whiskers from the ends of the glass fiber cloth. Thus, because the tooth edges 301 are of uniform length and are arranged at equal intervals, the amount of whiskers extracted from the ends of the glass fiber cloth is uniform and neat. Since the device is used for a single cut, the efficiency is significantly improved compared to manual multiple cutting.

[0025] The device for cutting whiskers from the ends of fiberglass cloth further includes an upper blade mounting arm 5 having a mounting end 501 and a pressing end 502. The mounting end 501 of the upper blade mounting arm 5 is rotatably mounted on the frame 1 via a hinge 6. The upper blade 3 is detachably fixed to the upper blade mounting arm 5. In this way, the upper blade 3 can be replaced when it becomes less sharp.

[0026] The above-mentioned device for cutting the whisker-like fibers at the end of the glass fiber cloth also includes a pressing mechanism 7 for pressing down the pressing end 502 of the upper blade mounting arm 5. The pressing mechanism 7 includes a pressing arm 701, a connecting piece 702, a positioning hinge shaft 703, a connecting hinge shaft 1 704, and a connecting hinge shaft 2 705. The lower end of the pressing arm 701 is rotatably mounted on the frame 1 through the positioning hinge shaft 703. One end of the connecting piece 702 is rotatably connected to the pressing end 502 of the upper blade mounting arm 5 through the connecting hinge shaft 1 704, and the other end is rotatably connected to the middle part of the pressing arm 701 through the connecting hinge shaft 2 705. Before cutting the fibers, the upper blade mounting arm 5 has an angle 706 with the connecting piece 702. The upper end portion of the pressing arm 701 is a wrench end 7011 that is held by hand and pressed down to rotate the pressing arm 701 around the positioning hinge shaft 703. During use, gripping the wrench end 7011 and pressing down causes the lower pressure arm 701 to rotate, causing the upper blade 3 to drop through the connecting member 702, thereby achieving fiber shearing. The upper blade mounting arm 5 forms an angle 706 with the connecting member 702 before shearing the fibers. This angle 706 is continuously varied during the downward pressure process to accommodate the changing spacing between the connecting hinge 2 705 and the mounting hinge 6.

[0027] The mounting hinge 6 is fixed to the frame 1. Before cutting the fibers, the upper blade 3 and the lower blade 4 intersect at an angle 11 at the end near the mounting hinge 6. A gap 10 exists between the upper blade 3 and the lower blade 4, only at the end facing the downward pressure mechanism, allowing the end of the fiberglass cloth to be inserted. During use, the fibers can be sheared by simply pressing down the downward pressure end 502 of the upper blade mounting arm 5.

[0028] The device for cutting whisker-like fibers at the ends of glass fiber cloth further comprises a table 2 mounted on the frame 1 , and a lower blade 4 is fixed on the table 2 . Example 2

[0029] like Figure 2 As shown in FIG. 4 , this embodiment differs from the first embodiment in that the device for shearing the whisker-like fibers at the ends of glass fiber cloth further includes a mounting end pull-down mechanism 8. A gap 10 is defined between the upper blade 3 and the lower blade 4 for inserting the end of the glass fiber cloth. The mounting end 501 of the upper blade mounting arm 5 can be lowered simultaneously with the downward pressure end 502 under the action of the mounting end pull-down mechanism 8. This allows for a longer gap 10 for inserting the end of the glass fiber cloth, and the difference in the gaps between the two ends is much smaller than in the first embodiment, greatly facilitating insertion of the glass fiber cloth. Furthermore, all teeth 301 on the upper blade 3 drop in unison, ensuring a more uniform and regular shearing process.

[0030] The device for cutting the whisker-like fibers at the end of the glass fiber cloth also includes a mounting base 9 fixed to the frame 1. The mounting base 9 has a slide 901 for mounting the mounting end 501 of the upper blade mounting arm 5 and for the mounting end 501 to slide down. The walls on both sides of the slide 901 are provided with waist-shaped shaft sliding holes 902 for the mounting hinge shaft 6 to slide up and down. The mounting end 501 of the upper blade mounting arm 5 is located in the slide 901. The two ends of the mounting hinge shaft 6 mounted on the mounting end 501 extend from the sides of the waist-shaped shaft sliding holes 902 on the walls on both sides of the slide 901 and are connected to the pull-down component of the mounting end pull-down mechanism 8. The lower end of the above-mentioned lower pressure arm 701 extends downward to form a push arm end 7012, which provides execution power for the mounting end pull-down mechanism 8.

[0031] The above-mentioned installation end pull-down mechanism 8 includes a push rod 801, a turntable 802 and a clamp pull rod 803. The turntable 802 is installed on the frame 1 below the mounting seat 9 through a rotating shaft 804. A pull-down rotating shaft 805 and a horizontal push rotating shaft 806 are respectively provided on the upper and lower disk surfaces of the turntable on one side of the lower pressure arm 701. One end of the push rod 801 is rotatably connected to the push arm end 7012 of the lower pressure arm through a connecting hinge shaft 807. The other end of the push rod 801 is rotatably connected to the push arm end 7012 of the lower pressure arm through a connecting hinge shaft 807. The shaft 806 is rotatably connected to the rotating disk 802, and the clamp-shaped pull rod 803 has two clamp arms, the upper ends of which are respectively connected to the two ends of the mounting hinge shaft 6 extending from both sides of the mounting seat 9. When in use, the wrench end 7011 of the lower pressure arm is pulled downward to rotate the lower pressure arm 701 around the positioning hinge shaft 703, so that the push arm end 7012 pushes the rotating disk 802 to rotate through the push rod 801. The rotation of the rotating disk 802 pulls down the mounting end 501 of the mounting arm through the clamp-shaped pull rod 803. In this way, when the lower pressure arm 701 is pressed downward to cause the lower pressure end 502 of the upper blade mounting arm to fall, the mounting end 501 of the upper blade mounting arm 5 is also caused to fall, thereby achieving that all the tooth edges 301 on the upper blade 3 can fall in line.

[0032] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the scope of protection covered by the present invention. Any modifications in equivalent forms should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A device for shearing whisker-like fibers at the end of a glass fiber cloth, comprising a frame (1), a lower blade (4) fixed to the frame (1) with its cutting edge facing upward, and an upper blade (3) movably mounted on the frame (1) with its cutting edge facing downward, wherein the cutting edge of the upper blade (3) and the cutting edge of the lower blade (4) are respectively located on two adjacent planes, and before shearing, there is a gap (10) between at least one end of the upper blade (3) and the lower blade (4) for the end of the glass fiber cloth to be inserted, and when the upper blade (3) falls, it can be shear-fitted with the lower blade (4), and is characterized in that: The upper blade (3) has a plurality of teeth (301) with equal lengths and arranged at equal intervals. When in use, the edges of the teeth (301) spaced apart on the upper blade (3) and the edges of the lower blade (4) are brought into contact with each other to shear off a portion of the whisker-like fibers at the end of the glass fiber cloth. The upper blade mounting arm (5) is also provided with a mounting end (501) and a pressing end (502). The mounting end (501) of the upper blade mounting arm (5) is rotatably mounted on the frame (1) via a mounting hinge (6). The upper blade (3) is detachably fixed on the upper blade mounting arm (5). The lower blade mounting arm (7) is provided with a pressing mechanism (7) for pressing down the pressing end (502) of the upper blade mounting arm (5). The pressing mechanism (7) comprises a pressing arm (701), a connecting member (702), a positioning hinge (703), a connecting hinge first (704), and a connecting hinge second (705). The lower end of the pressing arm (701) is fixed via a mounting hinge (6). The positioning hinge shaft (703) is rotatably mounted on the frame (1), one end of the connecting member (702) is rotatably connected to the lower pressure end (502) of the upper blade mounting arm (5) through the connecting hinge shaft 1 (704), and the other end is rotatably connected to the middle of the lower pressure arm (701) through the connecting hinge shaft 2 (705). Before cutting the fiber, the upper blade mounting arm (5) has an angle 1 (706) with the connecting member (702), and the lower pressure arm (701) is rotatably connected to the lower pressure arm (701). The upper end portion is a wrench end (7011) for being held and pressed down by hand to rotate the pressing arm (701) around the positioning hinge shaft (703); the mounting hinge shaft (6) is limited on the frame body (1); before cutting the fiber, the upper blade (3) and the lower blade (4) intersect at one end close to the mounting hinge shaft (6) to form an angle 2 (11); and there is a spacing (10) between the upper blade (3) and the lower blade (4) only at the end facing the pressing mechanism for the end of the glass fiber cloth to be inserted.

2. The device for cutting whisker-like fibers from the ends of glass fiber cloth according to claim 1, characterized in that: It also includes a mounting end pull-down mechanism (8), a spacing (10) is provided between the upper blade (3) and the lower blade (4) for inserting the end of the fiberglass cloth, and the mounting end (501) of the upper blade mounting arm (5) can fall simultaneously with the pressing end (502) under the action of the mounting end pull-down mechanism (8).

3. The device for cutting whisker-like fibers from the ends of glass fiber cloth according to claim 2, characterized in that: The utility model also includes a mounting seat (9) fixed on the frame (1), wherein the mounting seat (9) has a slide groove (901) for mounting the mounting end (501) of the upper blade mounting arm and for the mounting end (501) to slide down, and waist-shaped shaft sliding holes (902) for the mounting hinge shaft (6) to slide up and down are provided on the walls on both sides of the slide groove (901), and the mounting end (501) of the upper blade mounting arm (5) is located in the slide groove (901), and the two ends of the mounting hinge shaft (6) mounted on the mounting end (501) extend outward from the sides of the waist-shaped shaft sliding holes (902) on the walls on both sides of the slide groove (901) and are connected to the pull-down component of the mounting end pull-down mechanism (8).

4. The device for cutting whisker-like fibers from the ends of glass fiber cloth according to claim 3, characterized in that: The lower end of the lower pressing arm (701) extends downward to form a push arm end (7012), and the push arm end (7012) provides execution power for the installation end pull-down mechanism (8).

5. The device for cutting whisker-like fibers from the ends of glass fiber cloth according to claim 4, characterized in that: The mounting end pull-down mechanism (8) comprises a push rod (801), a rotating disk (802) and a clamp pull rod (803). The rotating disk (802) is mounted on the frame (1) below the mounting seat (9) via a rotating shaft (804). A pull-down rotating shaft (805) and a horizontal push rotating shaft (806) are respectively provided on the upper and lower disk surfaces of the rotating disk on one side of the lower pressure arm (701). One end of the push rod (801) is rotatably connected to the push arm end (7012) of the lower pressure arm via a connecting hinge shaft (807). The other end of the push rod (801) is rotatably connected to the push arm end (7012) of the lower pressure arm via a connecting hinge shaft (807). The push shaft (806) is rotatably connected to the turntable (802), and the clamp-shaped pull rod (803) has two clamp arms, the upper ends of the two clamp arms are respectively connected to the two ends of the mounting hinge shaft (6) extending on both sides of the mounting seat (9). When in use, the wrench end (7011) of the lower pressure arm is pulled downward to rotate the lower pressure arm (701) around the positioning hinge shaft (703), so that the push arm end (7012) pushes the turntable (802) to rotate through the push rod (801), and the rotation of the turntable (802) pulls down the mounting end (501) of the mounting arm through the clamp-shaped pull rod (803).

6. The device for cutting whisker-like fibers from the ends of glass fiber cloth according to any one of claims 1 to 5, characterized in that: It also includes a table plate (2) mounted on the frame (1), and the lower blade (4) is fixed on the table plate (2).

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