A tooling and method for assembling fiberglass preforms

Abstract

This invention relates to a fixture and method for assembling fiberglass preforms. The fixture features a U-shaped groove at the corner of a template block, into which an LED strip is embedded. When energized, the LED strip forms a U-shaped area, into which fiberglass reinforcing strips are laid. A sewing fixture near the template block flange sews the three layers of fiberglass reinforcing strips together with the fiberglass preform flange. A handheld frame, inserted within the template block, facilitates quick separation and transfer of the assembled fiberglass preform. The method is easy to operate, simple to implement, produces high-quality products, and improves the yield rate of assembled products.

Description

Technical Field

[0001] This invention relates to the assembly process of glass fiber preforms in the HP-RTM process, and particularly to a laying fixture and laying method for assembling glass fiber preforms. Background Technology

[0002] In the HP-RTM production process, the assembly of fiberglass preforms is involved. Pre-formed fiberglass bodies and multi-layered fiberglass reinforcing strips must be assembled according to the thickness of the finished product before the next adhesive injection process can proceed. This involves placing the pre-formed fiberglass body into a mold for adhesive injection, allowing it to cure and form the final product. Therefore, the fiberglass preform laying process is particularly important, as the quality of the pre-formed fiberglass body lay directly affects the yield rate of the final product after adhesive injection.

[0003] like Figure 1 As shown, the pre-formed fiberglass precast body 9 requires thickening and reinforcement with multi-layer fiberglass reinforcing strips at the corners 91 and flange edges 92. Generally, the flange edges 92 are first reinforced by applying adhesive spray or using staples or plastic nails to attach the fiberglass reinforcing strips to the flange edges 92 of the fiberglass precast body 9 to complete the thickening and reinforcement. Then, the corners 91 are reinforced by applying adhesive spray to the corners 91 of the fiberglass precast body 9 to complete the thickening and reinforcement.

[0004] However, the existing technology has the following three problems:

[0005] 1. Since each fiberglass preform has a different shape, the location and shape of the thickening reinforcement will change depending on the shape of the fiberglass preform. This makes the location and shape of the thickening reinforcement complex and diverse. It becomes difficult to accurately lay the corner fiberglass reinforcement blocks into the corner reinforcement area. Problems such as the fiberglass reinforcement blocks being placed off-center or exceeding the thickening reinforcement boundary may occur. This may result in insufficient 91 resin filling at the corner of the fiberglass preform, and exposed fiberglass inside the product, leading to the scrapping of the molded product and reducing the qualified rate of the produced products.

[0006] 2. Due to the large number of fiberglass reinforcing strips on the flange, there are generally two methods for laying the fiberglass reinforcing strips between the flange edge of the fiberglass preform and the multi-layer flange: One method relies on manual glue spraying. With this method, the amount of glue sprayed cannot be precisely controlled, and the glue composition has poor compatibility with the molding resin. Too little glue will cause the fiberglass reinforcing strip to fall off, while too much glue will easily cause large-area marks and other appearance defects on the molded product. The other method is to use staples or plastic nails to connect the fiberglass preform and the multi-layer fiberglass reinforcing strip. With this method, the staples or plastic nails may become loose or fall off into other parts of the fiberglass preform, resulting in poor appearance of the product after glue injection or even scrapping it, thus reducing the product qualification rate.

[0007] 3. When assembling complex and large fiberglass preforms, after the fiberglass preforms and multi-layer fiberglass reinforcing strips are laid, the operator can only pull them out of the tooling along the flange edge of the laid fiberglass preforms. During the pulling process, the laid fiberglass preforms are prone to falling off and separating, which greatly reduces the product qualification rate and production efficiency.

[0008] Through searching, there are related patents in the prior art, such as the Chinese utility model patent with authorization announcement number "CN220272675U" entitled "A Preformed Body for a Composite Material Battery Box Cover". This utility model patent discloses a preformed body for a composite material battery box cover, which relates to the field of composite material battery box technology. It includes a preformed body body, a first flange reinforcement component, a second flange reinforcement component, and a locking component. The preformed body body includes a main fiber layer and a flange edge disposed at the edge of the main fiber layer. The first flange reinforcement component and the second flange reinforcement component are both locked to the flange edge by the locking component. The first flange reinforcement component and the second flange reinforcement component are both multi-layer structures that are fixed together. The joint of the first flange reinforcement component and the second flange reinforcement component has a stepped layer structure with opposite states. This utility model has a reasonable design. The first and second flange reinforcement components are cut using a multi-layer integrated cutting method, resulting in fewer shape types that are easy to classify and distinguish. This achieves a simple and efficient classification of flange reinforcements and ensures neat reinforcement fibers. The first and second flange reinforcement components are stapled onto the preform body using a stapler, replacing the traditional adhesive spraying structure. This solves the problems of excessive adhesive spraying, uneven spraying, and difficulty in controlling the amount of adhesive used during operation. The flange reinforcement structure has been optimized from the traditional layer-by-layer adhesive structure to an integrated cutting and stapled structure, effectively saving adhesive material costs and reducing operation time.

[0009] The aforementioned Chinese utility model patent relates to the field of preforms for composite material battery casings. It uses a stapler to attach the first flange reinforcement component and the second flange reinforcement component to the preform body. However, the second problem mentioned in the background technology exists, namely, the plastic nails may become loose and not secure, or even fall off to other parts of the fiberglass preform, causing the molded product after glue injection to be scrapped and reducing the product qualification rate.

[0010] In summary, the primary technical problem that urgently needs to be solved is how to design a laying fixture and method for assembling fiberglass preforms that can accurately locate the reinforcement area, improve the appearance of the assembled product, and increase the pass rate of the assembled product. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to address the deficiencies in the prior art by providing a laying fixture and method for assembling fiberglass preforms, which can accurately locate the reinforcement area, improve the appearance of the assembled product and increase the qualification rate of the assembled product.

[0012] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a laying fixture for assembling fiberglass preforms, including a fixture frame, a molding block, and a light strip. The molding block is connected to the upper end of the fixture frame and distributed around the perimeter of the fixture frame to form a molding block frame. The inner cavity of the molding block frame is adapted to the shape of the fiberglass preform. The light strip is connected to the corner of the molding block frame and is used to divide the pre-designed corner fiberglass reinforcement strip pasting area.

[0013] Furthermore, the molding block has an arc-shaped portion and a horizontal portion; the molding block is adapted to the shape of the fiberglass preform.

[0014] The bow-shaped portion includes a first corner portion, a second corner portion, and a straight portion. One end of the straight portion is connected to the first corner portion, and the other end is connected to the second corner portion. There are two bow-shaped portions, and the two bow-shaped portions are symmetrically fixed to the periphery of the upper end face of the tooling frame by bolts. The two first corner portions and two second corner portions of the bow-shaped portion are fixed to the upper part of the four corners of the upper end face of the tooling frame, and the two straight portions of the bow-shaped portion are fixed to a symmetrical pair of opposite sides of the upper end face of the tooling frame.

[0015] The horizontal section has two parts, which are fixed to another set of opposite sides on the upper end face of the tooling frame and are symmetrical along the axis of the tooling frame.

[0016] Furthermore, the first corner portion is provided with a first groove, and the second corner portion is provided with a second groove. Both the first groove and the second groove are U-shaped grooves with their openings facing upwards.

[0017] The first groove and the second groove are both inlaid with the light strip; the first groove and the inner side of the first corner form a first U-shaped area, and the second groove and the inner side of the second corner form a second U-shaped area.

[0018] Furthermore, the laying fixture for assembling the fiberglass preform also includes a sewing fixture, which is used to sew fiberglass reinforcing strips onto the flange edges.

[0019] Furthermore, the installation fixture for assembling the fiberglass preform also includes a handheld holder, which is placed on the fixture frame and extends through the template frame.

[0020] Furthermore, the handheld frame includes a lifting rod and a support block, wherein the lifting rod is rectangular in shape;

[0021] The support block is provided with a third groove at its lower end. The depth of the third groove is the same as the height of the lifting rod, and the width of the third groove is the same as the width of the lifting rod. The lifting rod is connected to the support block by bolts.

[0022] Furthermore, the support block is also provided with a blind hole, a first boss, and a second boss;

[0023] The blind hole is opened on the outer side of the support block. One side of the first boss is connected to one side of the horizontal part, and the other side of the first boss is connected to one side of the first corner part; the second boss has an arc portion and extends into the inner side of the model block.

[0024] Furthermore, a method for tiling using the aforementioned tiling fixture is as follows:

[0025] S1: First, power on the colored LED strip of the assembling glass fiber preform installation fixture; then place at least two glass fiber preforms on the fixture frame, with the flange edge of the glass fiber preform resting on the molded block frame.

[0026] S2: Then assemble two adjacent fiberglass prefabricated bodies on the tooling frame. The overlap width between two adjacent fiberglass prefabricated bodies should not be less than 25mm. Lay the fiberglass prefabricated body at the overlap position.

[0027] S3: Then lay the flange edge of the fiberglass preform, place the three-layer fiberglass flange reinforcement strips in the designated position of the fiberglass preform flange in sequence, and then use sewing fixtures to sew the three-layer fiberglass reinforcement strips to the fiberglass preform flange as one piece;

[0028] S4: Finally, install the fiberglass reinforcement strips at the corners, precisely positioning and installing the two layers according to the thickened reinforcement area of ​​the colored LED strip;

[0029] Furthermore, the specific paving method shall include the following steps: S5: After paving is completed, two employees stand at both ends of the fixture, grab the hand-held lifting rods, and lift the paved fiberglass preform upwards, thereby separating the paved fiberglass preform from the paving fixture and transferring the paved fiberglass preform.

[0030] Furthermore, when the colored light strip is powered on, the colored light strip forms a thickened and reinforced paving area corresponding to the corner fiberglass reinforcement block of the fiberglass preform, which corresponds to the first U-shaped area and the second U-shaped area.

[0031] The beneficial effects of this invention are as follows:

[0032] (1) The present invention sets a U-shaped groove at the corner of the contour block on the tooling frame, so that the light strip is embedded in the groove. When the light strip is powered on, it will be colored and the colored light strip will form a U-shaped area. When the fiberglass preform is placed on the laying tooling, it will transmit light on the fiberglass preform to form a U-shaped area. The U-shaped area is the thickened and reinforced laying area of ​​the fiberglass reinforcing block at the corner of the fiberglass preform. It can accurately lay the fiberglass reinforcing strip into the thickened and reinforced laying area, which improves the problem that the glue spraying is prone to exceed the range in the operation process in the prior art. This setting makes the operation process more efficient and improves the appearance of the laying.

[0033] (2) In the process of laying the fiberglass preform at the flange edge, compared with the existing heat-laying and adhesive-spraying methods, this invention uses a sewing fixture near the flange of the molded block. The sewing fixture contains fiberglass braided threads of the same material as the fiberglass preform. The fiberglass reinforcing strips are laid in sequence and sewn together with the flange edge of the fiberglass preform through the fiberglass braided threads of the sewing fixture, thus laying the fiberglass reinforcing strips onto the flange edge of the fiberglass preform. This sewing fixture is easy to operate, the laying method is simple, the appearance quality is high, costs are saved, and the pass rate of assembled products is improved.

[0034] (3) The present invention provides a handheld frame, consisting of two frames that run through the molding block, for quick separation and transfer of the laid fiberglass preform. This design is easy to operate and improves assembly efficiency and product qualification rate. This design can improve the risk of the laid fiberglass preform easily falling off and separating during the process of pulling out the preform, which is a problem in the prior art where the operator can only pull it out from the tooling. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a glass fiber preform in the prior art;

[0036] Figure 2 This is a three-dimensional structural diagram of the laying fixture for assembling fiberglass preforms, excluding the sewing fixture, according to an embodiment of the present invention.

[0037] Figure 3 This is a three-dimensional structural diagram of the paving fixture after the handheld bracket has been removed, according to an embodiment of the present invention.

[0038] Figure 4 for Figure 3 A magnified view of part A in the diagram;

[0039] Figure 5 This is a top view of the installation fixture used for assembling fiberglass preforms, excluding the sewing fixture, according to an embodiment of the present invention.

[0040] Figure 6 This is a three-dimensional structural diagram of the handheld device according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the support block according to an embodiment of the present invention;

[0042] Figure 8 This is a three-dimensional structural diagram of the sewing garment according to an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram illustrating the separation of the fiberglass preform from the installation fixture after installation, according to an embodiment of the present invention.

[0044] In the diagram: 1. Tooling frame, 11. Upper end face, 2. Modeling block, 21. Bow-shaped part, 211. First corner part, 2111. First groove, 2112. First U-shaped area, 212. Second corner part, 2121. Second groove, 2122. Second U-shaped area, 213. Straight part, 22. Horizontal part, 23. Opening part, 3. Hand-held frame, 31. Lifting rod, 32. Support block, 321. Third groove, 322. Blind hole, 323. First boss, 324. Second boss, 4. Light strip, 5. Sewing tooling, 6. Corner fiberglass reinforcement block, 7. Fiberglass prefabricated body after installation, 8. Flange fiberglass reinforcement strip, 9. Fiberglass prefabricated body, 91. Corner, 92. Flange edge, 10. Modeling block frame. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the invention. Figure 1-9 The technical solutions of the embodiments of the invention are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention. Example

[0049] like Figure 1 and Figure 2 As shown, this is a laying fixture for assembling fiberglass preforms. It is equipped with a fixture frame 1, a molding block 2, and a light strip 4. The molding block 2 is connected to the upper end face 11 of the fixture frame 1 and is distributed around the perimeter of the fixture frame 1 to form a molding block frame 10. The inner cavity of the molding block frame 10 is adapted to the shape of the fiberglass preform 9. The light strip 4 is connected to the corner of the molding block frame and is used to divide the pre-designed corner fiberglass reinforcement strip 6 laying area.

[0050] To facilitate observation, a colored LED strip 4 is used. When the colored LED strip 4 is powered on, it forms four U-shaped areas on the inner sides of the four corners of the molding block frame. The fiberglass prefabricated body 9 is generally composed of two layers of fiberglass with a certain degree of light transmittance. When the fiberglass prefabricated body 9 that needs to be thickened and reinforced is placed on this installation fixture, four corresponding U-shaped areas will form at the four corners 91. These four U-shaped areas are the installation areas for the corner fiberglass reinforcement blocks 6 that need to be thickened and reinforced in the fiberglass prefabricated body 9. This solves the problem in the first background technology where the corner fiberglass reinforcement blocks 6 cannot be installed within the thickening and reinforcement area, resulting in the fiberglass reinforcement strip 8 being misaligned or exceeding the thickening and reinforcement boundary. This allows for precise positioning of the corner 91 installation area that needs to be thickened and reinforced, reducing the number of scrapped products and improving the product qualification rate.

[0051] To demonstrate more intuitively, such as Figure 3As shown, the molding block 2 includes an arc-shaped portion 21, a horizontal portion 22, and an opening portion 23. The arc-shaped portion 21, the horizontal portion 22, and the opening portion 23 form a molding block frame 10 around the tooling frame. The shape of the molding block frame 10 is adapted to the shape of the fiberglass preform 9 that needs to be thickened and reinforced, so that the fiberglass preform 9 fits into the laying tooling. This makes the process of laying the corner fiberglass reinforcing block 6 and the flange fiberglass reinforcing strip 8 on the laying tooling more stable and avoids relative sliding between the fiberglass preform 9 and the laying tooling during the laying process, which would cause product laying defects.

[0052] like Figure 3 and Figure 4 As shown, the first corner portion 211 is provided with a first groove 2111, and the second corner portion 212 is provided with a second groove 2121. Both the first groove 211 and the second groove 2121 are U-shaped grooves with their openings facing upwards. The first groove 2111 and the inner side of the first corner portion 211 form a first U-shaped area 2112, and the second groove 2121 and the inner side of the second corner portion 212 form a second U-shaped area 2122. The first groove 2111 and the second groove 2121 are provided in the first corner portion 211 and the second corner portion 212 for the purpose of installing the light strip 4.

[0053] like Figure 9 As shown, since the fiberglass preform 9 to be thickened and reinforced has a certain shape, in order to achieve a better paving effect, the fiberglass preform 9 needs to fit as closely as possible with the paving fixture. Therefore, the molding block frame 10 needs to be compatible with the shape of the fiberglass preform 9 to be thickened and reinforced.

[0054] like Figure 8 As shown, the device is a sewing fixture 5, which is equipped with fiberglass braiding thread. The sewing fixture 5 is placed next to the molded block frame 10. When laying the flange of the fiberglass prefabricated body 9, the three layers of flange fiberglass reinforcing strips 8 can be laid in sequence, and then the fiberglass braiding thread provided with the sewing fixture 5 is used to sew the three layers of flange fiberglass reinforcing strips 8 to the flange edge 92 of the fiberglass prefabricated body 9 as a whole, thereby achieving reinforcement of the flange edge 92 of the fiberglass prefabricated body 9.

[0055] like Figure 3As shown, the arc-shaped portion 21 of the template block frame 10 of the paving fixture of this application has a first corner portion 211, a second corner portion 212, and a straight portion 213. One end of the straight portion 213 is connected to the first corner portion 211, and the other end of the straight portion 213 is connected to the second corner portion 212. There are two arc-shaped portions 21 of this paving fixture. These two arc-shaped portions 21 are fixed to the two sides of the upper end face of the fixture frame 1 by bolts, and are symmetrically fixed to the fixture frame 1 along the axis of the fixture frame 1. The two first corner portions 211 and the two second corner portions 212 of the arc-shaped portion 21 are fixed to the upper part of the four corners of the upper end face of the fixture frame 1. The two straight portions 213 of the arc-shaped portion 21 of the template block 2 are fixed to a symmetrical set of opposite sides of the upper end face of the fixture frame. There are also two horizontal portions 22 of the template block frame 10, which are also fixed to another set of opposite sides of the upper end face of the fixture frame 1 and are arranged opposite each other. This creates two pairs of opposing openings 23 between the bow-shaped portion 21 and the horizontal portion 22. These openings 23 are used to place the handheld bracket 3, so that the handheld bracket 3 is fixed to the lower end of the fiberglass preform 9.

[0056] like Figure 6 As shown, the handheld bracket 3 includes a lifting rod 31 and a support block 32. The lifting rod 31 is rectangular. The support block 32 has a third groove 321 located at its lower end. The depth of the third groove 321 is the same as the height of the lifting rod 31, and the width of the third groove 321 is the same as the width of the lifting rod 31. The lifting rod 31 and the support block 32 are connected together by bolts. Figure 9 As shown, after the paving is completed, two employees stand at both ends of the fixture and grab the hand-held frame 3 lifting rod 31 to lift the paved fiberglass preform 7 upwards, thereby separating the paved fiberglass preform 7 from the paving fixture and transferring the paved fiberglass preform 7.

[0057] like Figure 6 As shown, the support block is provided with blind holes 322. The blind holes 322 are opened on the outer surface of the support block 32. The size of the blind holes 322 is large enough to fit four adult fingers. After the installation is completed, when the fiberglass preform 9 is lifted upward with the hand-held frame 3 lifting rod 31 and encounters great resistance, the blind holes 322 can be lifted upward by hand to loosen it. Then, the fiberglass preform 7 is separated from the installation tool and transferred using the hand-held frame 3 lifting rod 31.

[0058] like Figure 7As shown, the support block 31 is also provided with a first protrusion 323 and a second protrusion 324; one side of the first protrusion 323 is connected to one side of the horizontal part 22, and the other side of the first protrusion 323 is connected to one side of the first corner part 211; thereby, the first protrusion 323 of the support block 3 is engaged between the horizontal part 22 and the first corner part 211, thereby fixing the handheld frame 3 on the tooling frame 1 and the template block 2. The second protrusion 324 has an arc portion and extends inward to the inside of the template block 2, and is flush with the inside of the template block 2, so that it fits more closely with the fiberglass preform 9 placed on this laying tooling, and will not be damaged due to unevenness.

[0059] This invention also relates to a method for laying tiles using the above-mentioned laying fixture, the specific laying method being as follows:

[0060] S1: First, power on the colored light strip 4 of the assembling glass fiber prefabricated body 9 laying fixture; then place at least two two-layer glass fiber prefabricated bodies 9 on the fixture frame 1, with the flange of the glass fiber prefabricated body 9 resting on the template block 2.

[0061] S2: Then assemble two adjacent layers of fiberglass prefabricated body 9 on the tooling frame 2. The overlap width D between the two layers of fiberglass prefabricated body 9 of each pair should be more than 25mm. Spray adhesive at the overlap position and lay it.

[0062] S3: Then lay the flange of the fiberglass prefabricated body. Place the three-layer fiberglass flange reinforcement strip 8 in the designated position of the fiberglass prefabricated body flange in sequence. Then use sewing tools to sew the three-layer fiberglass reinforcement strip to the fiberglass prefabricated body flange into one piece.

[0063] S4: Finally, install the fiberglass reinforcement strips at the corners, precisely positioning and applying adhesive to the two layers of fiberglass reinforcement strips 8 according to the thickened reinforcement area of ​​the colored light strip;

[0064] S5: After the paving is completed, the operator stands at both ends of the fixture, grabs the hand-held frame 3 lifting rod 31, and lifts the paved fiberglass preform 7 upwards, thereby separating the paved fiberglass preform 7 from the paving fixture and transferring the paved fiberglass preform 7.

[0065] When the colored LED strip is powered on, it forms a thickened and reinforced laying area corresponding to the first U-shaped area 2112 and the second U-shaped area 2122 at the corner 91 of the fiberglass preform 9, which is a fiberglass reinforcing block 6. This allows operators to quickly and accurately locate the laying position, saving time while ensuring appearance quality, and effectively improving production efficiency and product qualification rate.

[0066] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0067] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the protection scope of the invention, which should be defined by the claims.

Claims

1. A fixture for assembling fiberglass preforms, comprising a fixture frame, characterized in that: It also includes a molding block and a light strip. The molding block is connected to the upper end of the tooling frame and distributed around the perimeter of the tooling frame to form a molding block frame. The inner cavity of the molding block frame is adapted to the shape of the fiberglass preform. The light strip is connected to the corner of the molding block frame and the light strip is used to divide the pre-designed corner fiberglass reinforcement strip pasting area. The molding block frame has an arc-shaped part, a horizontal part, and an opening; The bow-shaped portion includes a first corner portion, a second corner portion, and a straight portion. One end of the straight portion is connected to the first corner portion, and the other end is connected to the second corner portion. There are two bow-shaped portions, and the two bow-shaped portions are symmetrically fixed to the periphery of the upper end face of the tooling frame by bolts. The two first corner portions and two second corner portions of the bow-shaped portion are fixed to the upper part of the four corners of the upper end face of the tooling frame, and the two straight portions of the bow-shaped portion are fixed to a symmetrical pair of opposite sides of the upper end face of the tooling frame. The horizontal section has two parts, which are fixed to another set of opposite sides on the upper end face of the tooling frame and are symmetrical along the axis of the tooling frame. The first corner portion is provided with a first groove, and the second corner portion is provided with a second groove. Both the first groove and the second groove are U-shaped grooves with their openings facing upwards. The light strip is embedded in both the first groove and the second groove; the first groove and the inner side of the first corner form a first U-shaped area, and the second groove and the inner side of the second corner form a second U-shaped area.

2. The installation fixture for assembling fiberglass preforms according to claim 1, characterized in that: It also includes sewing fixtures, which are used to sew fiberglass reinforcing strips along the edges.

3. The installation fixture for assembling fiberglass preforms according to claim 1, characterized in that: It also includes a handheld stand, which is placed on the tooling frame and extends through the contour block frame.

4. The installation fixture for assembling fiberglass preforms according to claim 3, characterized in that: The handheld frame includes a lifting rod and a support block, wherein the lifting rod is rectangular in shape. The support block is provided with a third groove at its lower end. The depth of the third groove is the same as the height of the lifting rod, and the width of the third groove is the same as the width of the lifting rod. The lifting rod is connected to the support block by bolts.

5. The installation fixture for assembling fiberglass preforms according to claim 4, characterized in that: The support block is also provided with a blind hole, a first boss and a second boss; The blind hole is opened on the outer side of the support block. One side of the first boss is connected to one side of the horizontal part, and the other side of the first boss is connected to one side of the first corner part; the arc part of the second boss extends into the inner side of the model block.

6. A method for laying tiles using the laying fixture described in any one of claims 1-5, characterized in that: The specific installation method is as follows: S1: First, power on the colored LED strip of the assembling glass fiber preform installation fixture; then place at least two two-layer glass fiber preforms on the fixture frame, with the flanges of the glass fiber preforms resting on the template block. S2: Then assemble two adjacent layers of fiberglass prefabricated body on the tooling frame. The overlap width D between the two layers of fiberglass prefabricated body of each pair should be more than 25mm. Lay it at the overlap position. S3: Then lay the flange of the fiberglass preform. Place the three-layer fiberglass flange reinforcement strips in the designated position on the edge of the fiberglass preform flange in sequence. Then use sewing tools to sew the three-layer fiberglass reinforcement strips to the edge of the fiberglass preform flange into one piece. S4: Finally, install the corners by precisely positioning and installing the two layers of fiberglass reinforcement strips according to the thickened reinforcement area of ​​the colored light strip. When the colored LED strip is powered on, it forms a thickened and reinforced area corresponding to the first U-shaped area and the second U-shaped area, which is the corner fiberglass reinforcement block of the fiberglass preform.

7. The paving method according to claim 6, characterized in that: The specific installation steps also include: S5: After installation, the operator stands at both ends of the fixture, grabs the hand-held lifting rod, and lifts the installed fiberglass preform upwards to separate the installed fiberglass preform from the installation fixture for transfer.

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