Automatic yarn winding system for glass fiber reinforced plastic molding grid forming and yarn winding process thereof

Abstract

The application relates to an automatic yarn winding system for glass steel moulded grid forming and a yarn winding process thereof, which comprises a forming mould, yarn winding systems for laying yarns in a grid forming cavity of the forming mould, a glue injection system for pouring resin in the grid forming cavity of the forming mould, and a yarn pressing system for compacting the resin and the yarns in the grid forming cavity of the forming mould and exhausting bubbles, the yarn winding system has two yarn winding systems in total, and the yarns in multiple layers distributed in the upper and lower positions of the grid forming cavity of the same forming mould are laid through the cooperative action of the two yarn winding systems. The application has the advantages that the two yarn winding systems are designed, and the yarns in the grid forming cavity of the same forming mould are laid through the cooperative action of the two yarn winding systems, so that the yarn winding time can be greatly reduced, and the work efficiency can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of fiberglass molded grating molding, specifically to an automatic yarn winding system and its winding process for fiberglass molded grating molding. Background Technology

[0002] The growing market demand for molded grating products and the insufficient production capacity have made the development and application of efficient, stable, and fully automated molded grating production equipment an inevitable trend in the industry.

[0003] For example, patent CN115352087A mentions an automatic yarn winding system for molding fiberglass molded gratings, including a yarn winding system, an adhesive injection system, and a yarn pressing system. The system utilizes a yarn winding and traveling mechanism to move the installation mechanism along the length and width of the molding mold. This allows a single yarn laying component to complete both warp and weft yarn laying within the molding mold. The reversal between warp and weft yarn laying is achieved through an integrated centering and reversing mechanism, eliminating the need to cut the fiberglass yarn during the entire laying process. The yarn laying tube can reverse direction by 90° within the grating molding cavity of the molding mold, achieving this reversal without leaving the cavity during upward movement. This avoids the problem of loosening or breaking of the fiberglass yarn during the lifting of the yarn laying tube and adhesive injection, which could ultimately reduce the structural strength of the molded fiberglass grating, thus ensuring improved structural strength.

[0004] The yarn winding system in the aforementioned patent uses a single yarn winding system to lay yarn in the grid forming cavity of the molding mold to form fiberglass molded grid. Each layer of yarn needs to be laid completely through the entire grid forming cavity before the next layer can be laid. The yarn laying speed is low and the work efficiency is not high. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic yarn winding system for fiberglass molded grating with fast yarn laying speed and high working efficiency, as well as a yarn winding process based on the automatic yarn winding system for fiberglass molded grating.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: an automatic yarn winding system for molding fiberglass molded grating, comprising a molding mold, a yarn winding system for laying yarn in the grating molding cavity of the molding mold, a resin injection system for injecting resin into the grating molding cavity of the molding mold, and a yarn pressing system for compacting and degassing the resin and yarn in the grating molding cavity of the molding mold. The innovation is that there are two yarn winding systems, and the two yarn winding systems work together to lay multiple layers of yarn distributed vertically in the grating molding cavity of the same molding mold.

[0007] Furthermore, the yarn winding system includes a support frame and a yarn laying tube mounted on the support frame, wherein the centerline of the yarn laying tube is located outside the vertical plane in which the support frame is located;

[0008] In the two yarn winding systems, the two yarn laying tubes on the two support frames are arranged facing each other.

[0009] Furthermore, the two yarn winding systems are defined as the first yarn winding system and the second yarn winding system. The yarn layer of the grid forming cavity of the forming mold is an odd number of yarn layers and an even number of yarn layers laid alternately from bottom to top. The grid forming cavity has a midpoint and two endpoints, which are the first endpoint and the second endpoint distributed on the diagonal of the grid forming cavity, respectively.

[0010] When laying an odd number of yarn layers, the starting point of the first yarn winding system is the first end point of the grid forming cavity, and the ending point is the midpoint of the grid forming cavity; the starting point of the second yarn winding system is the midpoint of the grid forming cavity, and the ending point is the second end point of the grid forming cavity.

[0011] When laying an even number of yarn layers, the starting point of the first yarn winding system is the midpoint of the grid forming cavity, and the ending point is the first end point of the grid forming cavity. The starting point of the second yarn winding system is the second end point of the grid forming cavity, and the ending point is the midpoint of the grid forming cavity.

[0012] An innovative aspect of a yarn winding process based on an automatic yarn winding system for molding fiberglass molded grating is that two yarn winding systems work together to form yarn layers in the grating forming cavity of the molding mold, and multiple yarn layers are stacked to form a fiberglass molded grating.

[0013] Furthermore, among the multiple yarn layers forming the fiberglass molded grating, the yarn layer located at the bottom is the bottom yarn layer, and the remaining yarn layers are even-numbered yarn layers and odd-numbered yarn layers laid alternately from bottom to top. The two yarn winding systems are defined as the first yarn winding system and the second yarn winding system, respectively. The long axis direction of the grating forming cavity is defined as the first direction, and the width direction of the grating forming cavity is defined as the second direction. The grating forming cavity has a midpoint and two endpoints, which are the first endpoint and the second endpoint distributed on the diagonal of the grating forming cavity, respectively.

[0014] The specific steps of the yarn winding process are as follows:

[0015] S1: First, the bottom layer of yarn is laid. The first winding system and the second winding system stop at their respective starting points. Then, the first winding system winds the yarn first. When the yarn laying tube of the first winding system moves to a position where it is flush with the yarn laying tube of the second winding system in the first direction, the second winding system also starts to work and winds the yarn synchronously and in the same direction as the first winding system. When the first winding system moves to the end point, that is, the midpoint of the grid forming cavity, the first winding system stops working, while the second winding system still needs to continue working for a while to complete the path that the first winding system wound first. Finally, the second winding system moves to the second end point of the grid forming cavity to complete the laying of the bottom layer of yarn.

[0016] S2: Next, lay the even number of yarn layers. The first winding system winds the yarn first. When the yarn laying tube of the first winding system moves to a position where it is flush with the yarn laying tube of the second winding system in the second direction, the second winding system also starts to work. At this time, the second winding system winds the yarn synchronously and in the same direction as the first winding system. After the first winding system moves to the end point, that is, the first end point of the grid forming cavity, the first winding system stops working, while the second winding system still needs to continue working for a while to complete the path that the first winding system wound first. Finally, the second winding system moves to the midpoint of the grid forming cavity to complete the laying of the even number of yarn layers.

[0017] S3: Then, the odd number of yarn layers are laid. Similarly, the first winding system winds the yarn first. When the yarn laying tube of the first winding system moves to a position where it is flush with the yarn laying tube of the second winding system in the first direction, the second winding system also starts to work and winds the yarn synchronously and in the same direction as the first winding system. When the first winding system moves to the end point, that is, the midpoint of the grid forming cavity, the first winding system stops working, while the second winding system still needs to continue working for a while to complete the path that the first winding system wound first. Finally, the second winding system 3 moves to the second end point of the grid forming cavity to complete the laying of the odd number of yarn layers.

[0018] S4: Finally, after the odd-numbered yarn layers are laid, the even-numbered yarn layers are laid in sequence from bottom to top, following the order of even-numbered yarn layers, odd-numbered yarn layers, even-numbered yarn layers, odd-numbered yarn layers, etc., until all layers are laid, thus completing the yarn laying process of the fiberglass molded grating.

[0019] The advantages of this invention are: by designing two yarn winding systems and using the coordinated action of the two yarn winding systems to lay yarn in the grid forming cavity of the same forming mold, the yarn winding time can be greatly reduced, up to half the time, thus significantly improving work efficiency.

[0020] The design of the yarn winding system places the centerline of the yarn laying tube outside the vertical plane where the support frame is located. Combined with the opposing arrangement of the yarn laying tubes of the two yarn winding systems, interference is avoided during the yarn winding process when the two yarn winding systems work together.

[0021] By designing the winding paths of the two winding systems, the midpoint and end point of the grid forming cavity are selected as the starting and ending points of the winding system. This ensures that when the winding system transitions between two adjacent yarn layers, the end point of the previous yarn layer becomes the starting point of the next yarn layer. This avoids the generation of duplicate yarns when the winding system transitions between two yarn layers and ensures that the amount of yarn at each position of each yarn layer is consistent with the amount of yarn in the original winding system.

[0022] The yarn winding process of the present invention is based on two yarn winding systems to achieve yarn winding, which greatly shortens the yarn winding time. Moreover, by using the method of laying a path first by the first yarn winding system, the first yarn winding system and the second yarn winding system perform synchronous and unidirectional actions for most of the working time, avoiding mutual interference and affecting the smooth progress of yarn laying. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a schematic diagram of the automatic yarn winding system for forming fiberglass molded grating according to the present invention.

[0025] Figures 2-7 This is a schematic diagram showing the position of the yarn winding system in different states in this invention.

[0026] Figure 8 This is a schematic diagram of the yarn winding system in this invention.

[0027] Figure 9 This is a diagram showing the laying path of the bottom yarn layer in this invention.

[0028] Figure 10 This is a diagram showing the laying path of even-numbered yarn layers in this invention.

[0029] Figure 11 This is a diagram showing the laying path of the odd number of yarn layers in this invention. Implementation

[0030] The following embodiments are intended to enable those skilled in the art to more fully understand the present invention, but do not limit the invention to the scope of the embodiments described.

[0031] like Figure 1The automatic yarn winding system for molding fiberglass grating shown includes a molding mold 1, a yarn winding system for laying yarn in the grating forming cavity of the molding mold 1, a resin injection system for injecting resin into the grating forming cavity of the molding mold 1, and a yarn pressing system for compacting the resin and yarn in the grating forming cavity of the molding mold 1 and removing air bubbles. The structure and operating principle of the molding mold, yarn winding system, resin injection system, and resin injection system in this embodiment are the same as those in patent CN115352087A, and will not be described in detail in this embodiment.

[0032] There are two yarn winding systems, and through the coordinated action of the two yarn winding systems, multiple layers of yarn distributed vertically are laid in the grid forming cavity of the same forming mold 1.

[0033] like Figure 8 As shown, the yarn winding system includes a support frame 4 and a yarn laying tube 5 installed on the support frame 4. The center line of the yarn laying tube 5 is located outside the vertical plane where the support frame 4 is located.

[0034] In the two yarn winding systems, the two yarn-laying tubes 5 on the two support frames 4 are arranged facing each other. The yarn winding system is designed so that the center line of the yarn-laying tube 5 is outside the vertical plane where the support frame 4 is located. Combined with the facing arrangement of the yarn-laying tubes 5 in the two yarn winding systems, interference is avoided during the yarn winding process when the two yarn winding systems work together.

[0035] Two yarn winding systems are defined as first yarn winding system 2 and second yarn winding system 3. The yarn layers in the grid forming cavity of the forming mold 1 are odd-numbered yarn layers and even-numbered yarn layers laid alternately from bottom to top. The grid forming cavity has a midpoint and two endpoints, which are the first endpoint and the second endpoint distributed on the diagonal of the grid forming cavity, respectively. The long axis direction of the forming mold 1 is the first direction, and the width direction of the forming mold 1 is the second direction.

[0036] When laying an odd number of yarn layers, the starting point of the first yarn winding system 2 is the first end point of the grid forming cavity, the ending point of the first yarn winding system 2 is the midpoint of the grid forming cavity, the starting point of the second yarn winding system 3 is the midpoint of the grid forming cavity, and the ending point of the second yarn winding system 3 is the second end point of the grid forming cavity.

[0037] When laying an even number of yarn layers, the starting point of the first yarn winding system 2 is the midpoint of the grid forming cavity, and the ending point of the first yarn winding system 2 is the first end point of the grid forming cavity. The starting point of the second yarn winding system 3 is the second end point of the grid forming cavity, and the ending point of the second yarn winding system 3 is the midpoint of the grid forming cavity.

[0038] The winding process of the automatic winding system for molding fiberglass grating of the present invention is specifically achieved through the following steps:

[0039] S1: First, lay the bottom layer of yarn. The first winding system 2 and the second winding system 3 remain at their respective starting points. Figure 2 At the position shown, the first winding system 2 winds the yarn first. When the yarn-laying tube of the first winding system 2 moves to a position where it is flush with the yarn-laying tube of the second winding system 3 in the first direction, that is... Figure 3 At the indicated position, the second winding system 3 also begins to work, winding yarn synchronously and in the same direction as the first winding system 2. After the first winding system 2 moves to the endpoint, that is, the midpoint of the grid forming cavity, the first winding system 2 stops working, while the second winding system 3 continues to work for a while to complete the path that the first winding system 2 wound first. Finally, the second winding system 3 moves to the second endpoint of the grid forming cavity, that is, as shown. Figure 4 At the indicated location, complete the laying of the bottom layer of yarn.

[0040] The laying path of the bottom yarn layer is as follows Figure 9 As shown, the path of the purple line segment 21 is the winding path of the first winding system 2, the path of the cyan line segment 31 is the winding path of the second winding system 3, and the bottom yarn layer is a special odd-numbered yarn layer.

[0041] S2: Next, lay out even-numbered yarn layers. The first winding system 2 winds the yarn first. When the yarn-laying tube of the first winding system 2 moves to a position where it is flush with the yarn-laying tube of the second winding system 3 in the second direction, the second winding system 3 also begins to work. At this time, the second winding system 3 and the first winding system 2 wind the yarn synchronously and in the same direction. Figure 6 As shown, after the first winding system 2 moves to its endpoint, i.e., the first end point of the grid forming cavity, the first winding system 2 stops working, while the second winding system 3 continues to work for a while to complete the path that the first winding system 2 wound first. Finally, the second winding system 3 moves to the midpoint of the grid forming cavity, i.e., as shown... Figure 2 At the positions shown, complete the laying of even-numbered yarn layers.

[0042] The laying path of even-numbered yarn layers is as follows Figure 10 As shown, the path of the purple line segment 22 is the winding path of the first winding system 2, and the path of the cyan line segment 32 is the winding path of the second winding system 3.

[0043] S3: Then, the odd number of yarn layers are laid. Similarly, the first winding system 2 winds the yarn first. When the yarn laying tube of the first winding system 2 moves to a position where it is flush with the yarn laying tube of the second winding system 3 in the first direction, that is... Figure 3At the indicated position, the second winding system 3 also begins to work, winding yarn synchronously and in the same direction as the first winding system 2. After the first winding system 2 moves to the endpoint, that is, the midpoint of the grid forming cavity, the first winding system 2 stops working, while the second winding system 3 continues to work for a while to complete the path that the first winding system 2 wound first. Finally, the second winding system 3 moves to the second endpoint of the grid forming cavity, that is, as shown. Figure 4 At the positions shown, complete the laying of the odd number of yarn layers.

[0044] The laying path of odd number of yarn layers is as follows Figure 11 As shown, the path of the purple line segment 23 is the winding path of the first winding system 2, and the path of the cyan line segment 33 is the winding path of the second winding system 3.

[0045] S4: Finally, after the odd-numbered yarn layers are laid, the even-numbered yarn layers are laid in sequence from bottom to top, following the order of even-numbered yarn layers, odd-numbered yarn layers, even-numbered yarn layers, odd-numbered yarn layers, etc., until all layers are laid, thus completing the yarn laying process of the fiberglass molded grating.

[0046] When laying the bottom layer and odd-numbered layers of yarn, the second winding system 3 can work simultaneously with the first winding system 2 from the beginning. However, due to the inconsistency in their starting points, the travel speed of the second winding system 3 needs to be designed to be lower than that of the first winding system 2, or the second winding system 3 can stop moving after reaching the side of the grid forming cavity, waiting for the first winding system 2 to also move to the side of the grid forming cavity, to achieve the desired effect. Figure 7 At the position shown, the first winding system 2 and the second winding system 3 then perform synchronous and unidirectional movements.

[0047] During the yarn laying process, the midpoint and two endpoints of the grid forming cavity are selected as the starting and ending points of the two winding systems, so that when the winding system transitions between two adjacent yarn layers, the end point of the winding system in the previous yarn layer becomes the starting point in the next yarn layer. This avoids the generation of duplicate yarn when the winding system transitions between two yarn layers, and ensures that the amount of yarn in each position of each yarn layer is consistent with the amount of yarn in the original winding system.

[0048] In addition, during the laying of the bottom yarn layer, even-numbered yarn layers, and odd-numbered yarn layers, the first winding system 2 lays a path to achieve a position flush with the second winding system 3. This ensures that the first winding system 2 and the second winding system 3 operate synchronously and in the same direction for most of the working time, which facilitates program control and avoids confusion and interference caused by the first winding system 2 and the second winding system 3 operating in opposite directions for a long time during continuous production, thus affecting the smooth progress of yarn laying.

[0049] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic yarn winding system for molding fiberglass reinforced plastic (FRP) gratings, comprising a molding die, a yarn winding system for laying yarn into the grating molding cavity of the molding die, a resin injection system for injecting resin into the grating molding cavity of the molding die, and a yarn pressing system for compacting and degassing the resin and yarn within the grating molding cavity of the molding die, characterized in that: The yarn winding system is two in total, and the two yarn winding systems cooperatively lay the multiple layers of yarns distributed in upper and lower directions on the grid forming cavity of the same forming mold; The two yarn winding systems are defined as a first yarn winding system and a second yarn winding system, the yarn layers of the grid forming cavity of the forming mold are odd numbered yarn layers and even numbered yarn layers which are sequentially and intervally laid from bottom to top, the grid forming cavity has a midpoint and two endpoints, and the two endpoints are a first endpoint and a second endpoint which are distributed on the diagonal lines of the grid forming cavity; When laying the odd numbered yarn layers, the starting point of the first yarn winding system is the first endpoint of the grid forming cavity, and the ending point is the midpoint of the grid forming cavity, and the starting point of the second yarn winding system is the midpoint of the grid forming cavity, and the ending point is the second endpoint of the grid forming cavity; When laying the even numbered yarn layers, the starting point of the first yarn winding system is the midpoint of the grid forming cavity, and the ending point is the first endpoint of the grid forming cavity, and the starting point of the second yarn winding system is the second endpoint of the grid forming cavity, and the ending point is the midpoint of the grid forming cavity.

2. An automatic yarn winding system for fiberglass molding grid forming as claimed in claim 1, wherein: The yarn winding system comprises a support frame and a yarn laying pipe installed on the support frame, and the center line of the yarn laying pipe is located outside the vertical plane where the support frame is located; In the two yarn winding systems, the two yarn laying pipes on the two support frames are oppositely arranged.

3. A process for winding of glass fibre based on the automatic winding system for moulding of FRP grating as claimed in claim 1, wherein: The yarn winding system cooperatively winds yarns in the grid forming cavity of the forming mold to form yarn layers, and the multiple yarn layers are stacked to form a glass steel molded grid; In the multiple yarn layers forming the glass steel molded grid, the yarn layer located at the bottom side is a bottom layer, and the remaining yarn layers are even numbered yarn layers and odd numbered yarn layers which are sequentially and intervally laid from bottom to top, the two yarn winding systems are defined as a first yarn winding system and a second yarn winding system, the long axis direction of the grid forming cavity is defined as a first direction, the width direction of the grid forming cavity is defined as a second direction, the grid forming cavity has a midpoint and two endpoints, and the two endpoints are a first endpoint and a second endpoint which are distributed on the diagonal lines of the grid forming cavity; The specific steps of the yarn winding process are as follows S1: first, the bottom layer is laid, the first yarn winding system and the second yarn winding system are respectively stopped at the starting point position, then the first yarn winding system starts to wind yarn, when the yarn laying pipe of the first yarn winding system moves to the position where the yarn laying pipe is in line with the yarn laying pipe of the second yarn winding system in the first direction, the second yarn winding system also starts to work and synchronously and directionally winds yarn with the first yarn winding system, after the first yarn winding system moves to the endpoint, i.e. the midpoint of the grid forming cavity, the first yarn winding system stops working, and the second yarn winding system still needs to continue to work for a period of time to make up the path where the first yarn winding system winds yarn first, and finally the second yarn winding system moves to the second endpoint of the grid forming cavity to complete the laying of the bottom layer; S2: second, the laying of double number yarn layer, the same first winding system first winding, in the first winding system laying tube moves to the position in the second direction with the second winding system laying tube level, the second winding system also starts to work, at this time, the second winding system and the first winding system carry on the synchronous same direction winding, after the first winding system moves to the terminal point, namely the first end point of the grid forming cavity, the first winding system stops working, and the second winding system still needs to continue to work for a period of time to make up the path of the first winding system winding first, finally, the second winding system moves to the midpoint of the grid forming cavity, and the laying of double number yarn layer is completed; S3: then, the laying of single number yarn layer, the same first winding system first winding, the first winding system laying tube moves to the position in the first direction with the second winding system laying tube level, the second winding system also starts to work, and the first winding system carries on the synchronous same direction winding, after the first winding system moves to the terminal point, namely the midpoint of the grid forming cavity, the first winding system stops working, and the second winding system still needs to continue to work for a period of time to make up the path of the first winding system winding first, finally, the second winding system 3 moves to the second end point of the grid forming cavity, and the laying of single number yarn layer is completed; S4: finally, after the laying of single number yarn layer is completed, the laying of double number yarn layer is carried out again, according to the order of double number yarn layer, single number yarn layer, double number yarn layer, single number yarn layer……, the yarn is laid from bottom to top in turn until all layers are laid, that is, the yarn laying process of the glass steel molded grid is completed.

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