Die for preparing glass fiber reinforced plastic grating and wire distribution method

Abstract

The invention discloses a mold for glass fiber reinforced plastic grating preparation and a wire distribution method. The mold comprises a rack, a working table plate, a baffle, a plurality of rows of mold core sets sequentially arranged in the baffle at intervals in the longitudinal direction and a jacking mechanism arranged on the rack in a lifting mode, and a through hole allowing the jacking mechanism to penetrate in and out is formed in the working table plate; the mold core group comprises a plurality of mold cores which are sequentially arranged on the working table plate at intervals in the transverse direction; the die core comprises lower connecting sections connected with the working table plate and upper connecting sections connected to the upper portions of the lower connecting sections, the lower connecting sections and the upper connecting sections are gradually folded inwards in the upward direction, the inward folding angle of the lower connecting sections is smaller than that of the upper connecting sections, and the interval between the adjacent upper connecting sections is gradually reduced from top to bottom. And the interval between the adjacent lower connecting sections is gradually reduced from top to bottom. According to the mold for preparing the glass fiber reinforced plastic grating and the wire distribution method, the glass fiber reinforced plastic grating which is integrally uniform and relatively good in quality can be prepared.

Description

Technical Field

[0001] The invention relates to a mould and a wire laying method for preparing a glass fiber reinforced plastic grating. Background Art

[0002] Existing molds for producing FRP gratings feature a male mold assembly positioned within a female mold. The male mold assembly consists of multiple protrusions arranged in a crisscross pattern. The distance between the outermost protrusions and the inner surface of the female mold is the same as the distance between each other. During the reciprocating fiber routing process, the outermost protrusions are repeatedly entangled with the glass fiber. This results in uneven edges and unclear delamination in the finished FRP grating, resulting in relatively poor overall quality. Summary of the Invention

[0003] The object of the present invention is to provide a mold and a wire laying method for preparing a glass fiber reinforced plastic grating, which can produce a glass fiber reinforced plastic grating that is uniform as a whole and relatively good in quality.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A mold for producing glass fiber reinforced plastic gratings, comprising a frame, a work table mounted on the frame, a baffle circumferentially disposed on the upper surface of the work table, a plurality of rows of mold core groups longitudinally arranged and spaced apart in sequence within the baffle, a lifting mechanism liftably mounted on the frame and located below the work table, and a through hole formed on the work table for the lifting mechanism to pass through.

[0006] The core mold group includes a plurality of core molds arranged on the work table in a sequentially spaced manner along the transverse direction, and the core molds and the through holes are staggered with each other on the work table; the core mold includes a lower connecting section connected to the work table and an upper connecting section connected above the lower connecting section, and the lower connecting section and the upper connecting section are respectively gradually converged inward in an upward direction, and the inward convergence angle of the lower connecting section is smaller than the inward convergence angle of the upper connecting section, and the interval between adjacent upper connecting sections gradually decreases from top to bottom, and the interval between adjacent lower connecting sections gradually decreases from top to bottom.

[0007] Preferably, the lower connecting section and the upper connecting section are respectively cones, the bottom surfaces of the cones are parallel to the work table, the lower connecting section and the upper connecting section are respectively tapered upwards, and the cone angle of the lower connecting section is smaller than the cone angle of the upper connecting section.

[0008] Preferably, the lower connecting section and the upper connecting section are respectively polyhedrons, the bottom surfaces of the polyhedrons are parallel to the work table, the cross-sectional areas of the lower connecting section and the upper connecting section gradually decrease in the upward direction, and the top angle of the lower connecting section is smaller than the top angle of the upper connecting section.

[0009] Preferably, the lower connecting section and the upper connecting section have a smooth transition at the connection point.

[0010] Preferably, the inwardly contracting angle of the lower connecting section is α, wherein 0°<α≤8°.

[0011] Preferably, the inwardly contracting angle of the upper connecting section is β, wherein 0°<β<90°.

[0012] Preferably, the through holes are provided at the intersections of the transverse spacing and the longitudinal spacing between the mold cores.

[0013] Preferably, the lifting mechanism includes a support base that is liftably provided on the frame, a push rod connected to the support base and liftably provided in the through hole, and a driving assembly provided on the frame and used to drive the support base to move up and down.

[0014] A wire laying method for preparing glass fiber reinforced plastic grating is implemented by the above-mentioned mold for preparing glass fiber reinforced plastic grating, comprising the following steps:

[0015] (1) Clamping the cut glass fiber directly above the workbench so that it is aligned with the horizontal or vertical spacing between the mold cores in the vertical direction, and with both ends located on the inner side of the baffle;

[0016] (2) Loosening the glass fiber and allowing it to fall downward into the transverse interval or the longitudinal interval of the mold core. During the falling process of the glass fiber, the glass fiber is guided by the upper connecting section and the lower connecting section respectively.

[0017] Preferably, in step (1), at least two strands of the glass fibers are clamped simultaneously, and in step (2), all strands of the glass fibers are released simultaneously so as to fall synchronously into the transverse interval or the longitudinal interval of the mold core.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the mold and wire laying method for preparing glass fiber reinforced plastic grating of the present invention have the following advantages:

[0019] By setting the specific shape of the mold core, it can guide the glass fibers that fall after being cut, so that the glass fibers can stably fall into the horizontal or vertical intervals between the mold cores, so as to produce an overall uniform and relatively high-quality FRP grating; at the same time, it can also avoid the uneven edges of the FRP grating produced by directly winding the wire through the male mold assembly, further ensuring the overall quality of the FRP grating;

[0020] By setting the retraction angles of the lower connecting section and the upper connecting section to be different, the upper connecting section with a larger opening angle between the two sections plays a guiding role for the glass fibers, so that the glass fibers can fall to the specified position through the upper connecting section; the lower connecting section with a smaller opening angle between the two sections plays a guiding role for the glass fibers while also playing a limiting role for the glass fibers, so that the falling glass fibers can be stably confined between the lower connecting sections; the lower connecting section can also play a positive role in demolding after the glass fiber grating is press-formed, making demolding of the glass fiber grating easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attachment Figure 1 Schematic diagram of the structure of a mold for preparing a glass fiber reinforced plastic grating according to a specific embodiment of the present invention;

[0022] Attachment Figure 2 Schematic diagram of the top view of a mold for preparing a glass fiber reinforced plastic grating according to a specific embodiment of the present invention;

[0023] Attachment Figure 3 Schematic diagram of the cross-sectional structure of a mold for preparing a glass fiber reinforced plastic grating according to a specific embodiment of the present invention;

[0024] Attachment Figure 4 Schematic diagram of the arrangement structure of two adjacent mold cores.

[0025] Among them: 1. frame; 2. work table; 21. through hole; 3. baffle; 4. lifting mechanism; 41. support seat; 42. ejector rod; 5. mold core; 51. lower connecting section; 52. upper connecting section. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be further described below in conjunction with specific embodiments and drawings.

[0027] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inside", etc. indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0033] See also Figure 1-3 As shown, this embodiment provides a mold for preparing glass fiber reinforced plastic grille, comprising a frame 1, a workbench 2 arranged on the frame 1, a baffle 3 arranged circumferentially on the upper surface of the workbench 2, and multiple rows of longitudinal ( Figure 1The core groups are arranged in a sequential order (in the direction of the arrows in the figure) within the baffle plate 3; a lifting mechanism 4 is movably mounted on the frame 1 and positioned below the worktable 2; and the worktable 2 is provided with through-holes 21 for the lifting mechanism 4 to pass through. The worktable 2 and baffle plate 3 form the female mold, while the multiple rows of core groups form the male mold. These two cooperate to produce fiberglass reinforced plastic grating. Through-holes 21 are provided at the intersection of the horizontal and vertical spacings between the core groups 5, allowing the lifting mechanism 4 to eject the finished fiberglass reinforced plastic grating.

[0034] The mold core assembly includes a plurality of mold cores 5 arranged in a transversely spaced arrangement on the worktable 2. The mold cores 5 and the through holes 21 are staggered on the worktable 2. The mold cores 5 include a lower connecting section 51 connected to the worktable 2 and an upper connecting section 52 connected above the lower connecting section 51. The lower connecting section 51 and the upper connecting section 52 each gradually converge inward in an upward direction. The inward convergence angle of the lower connecting section 51 is smaller than the inward convergence angle of the upper connecting section 52. The spacing between adjacent upper connecting sections 52 gradually decreases from top to bottom, and the spacing between adjacent lower connecting sections 51 gradually decreases from top to bottom.

[0035] The lower connecting section 51 converges inwardly at an angle α, where 0° < α ≤ 8°. In this embodiment, α is 3°. The upper connecting section 52 converges inwardly at an angle β, where 0° < β < 90°. In this embodiment, β is 40°. The inward convergence angle β of the upper connecting section 52 is much greater than the inward convergence angle α of the lower connecting section 51.

[0036] By setting the retraction angles of the lower connecting section 51 and the upper connecting section 52 to be different, the upper connecting section 52 with a larger opening angle between the two sections plays a guiding role for the glass fibers, so that the glass fibers can fall to the specified position through the upper connecting section 52; the lower connecting section 51 with a smaller opening angle between the two sections not only plays a guiding role for the glass fibers, but also plays a limiting role for the glass fibers, so that the falling glass fibers can be stably confined between the lower connecting sections 51; the lower connecting section 51 can also play a positive role in demolding after the glass fiber grating is press-formed, making demolding of the glass fiber grating easier.

[0037] See also Figure 1 、 Figure 4 As shown, the lower connecting section 51 and the upper connecting section 52 are each polyhedrons. In this embodiment, the lower connecting section 51 and the upper connecting section 52 are each tetrahedrons. The bottom surface of the tetrahedron is parallel to the worktable 2, and the four side surfaces of the tetrahedron are aligned with the other four tetrahedrons on the four sides. The lower connecting section 51 and the upper connecting section 52 are arranged coaxially, and their cross-sectional areas gradually decrease in the upward direction. The top angle of the lower connecting section 51 is smaller than the top angle of the upper connecting section 52. The lower connecting section 51 and the upper connecting section 52 have a smooth transition at the connection to prevent snagging of falling glass fibers.

[0038] Wherein, A is the height of the formed FRP grating product, B is the shrinkage of the FRP grating product, and H is the total height of the mold core 5. The height H of the lower connecting section 51 is 下 =A+B, the height H of the upper connecting section 52 上 =H-(A+B).

[0039] In another embodiment, the lower connecting section 51 and the upper connecting section 52 are each cone-shaped, with the bottom surface of the cone parallel to the worktable 2. The lower connecting section 51 and the upper connecting section 52 each taper upward, with the taper angle of the lower connecting section 51 being smaller than that of the upper connecting section 52. The lower connecting section 51 and the upper connecting section 52 have a smooth transition at the connection to prevent snagging of falling glass fibers.

[0040] See also Figure 3 As shown, the above-mentioned lifting mechanism 4 includes a support base 41 that can be lifted and lowered on the frame 1, a push rod 42 connected to the support base 41 and lifted and lowered through the through hole 21, and a driving component (not shown in the figure) provided on the frame 1 and used to drive the support base 41 to rise and fall.

[0041] Among them, the outer diameter of the push rod 42 is the same as the inner diameter of the through hole 21. Before the FRP grating is formed, the push rod 42 is used to cooperate with the workbench 2 to form the bottom surface of the die; after the FRP grating is formed, the push rod 42 is used to lift the FRP grating upward.

[0042] A wire laying method for preparing glass fiber reinforced plastic grating is implemented by the above-mentioned mold for preparing glass fiber reinforced plastic grating, comprising the following steps:

[0043] (1) Clamp the cut glass fiber directly above the workbench 2 so that it is aligned with the horizontal or vertical spacing between the mold cores 5 in the vertical direction, and its two ends are located on the inner side of the baffle 3;

[0044] (2) Loosen the glass fiber and allow it to fall downward into the horizontal or vertical intervals of the mold core 5. During the falling process of the glass fiber, the upper connecting section 52 and the lower connecting section 51 are used to guide the glass fiber so that the glass fiber can fall stably between the lower connecting sections 51.

[0045] In step (1), at least two strands of glass fiber are clamped simultaneously. In this embodiment, six strands of glass fiber are clamped at a time. In step (2), the six strands of glass fiber are released simultaneously and fall into the transverse or longitudinal intervals of the mold core 5. This can significantly improve the fiber laying efficiency while maintaining stable fiber laying, thereby improving the production efficiency of the fiberglass reinforced plastic grating.

[0046] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mold for preparing glass fiber reinforced plastic grating, characterized by: The machine comprises a frame, a work table mounted on the frame, a baffle circumferentially arranged on the upper surface of the work table, a plurality of rows of core groups arranged in the baffle in a longitudinally spaced order, a lifting mechanism liftably mounted on the frame and located below the work table, and a through hole on the work table for the lifting mechanism to pass through. The core mold group includes a plurality of core molds arranged on the work table in a sequentially spaced manner along the transverse direction, and the core molds and the through holes are staggered with each other on the work table; the core mold includes a lower connecting section connected to the work table and an upper connecting section connected above the lower connecting section, and the lower connecting section and the upper connecting section are respectively gradually converged inward in an upward direction, and the inward convergence angle of the lower connecting section is smaller than the inward convergence angle of the upper connecting section, and the interval between adjacent upper connecting sections gradually decreases from top to bottom, and the interval between adjacent lower connecting sections gradually decreases from top to bottom.

2. The mold for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The lower connecting section and the upper connecting section are respectively cones, the bottom surfaces of the cones are parallel to the work table, the lower connecting section and the upper connecting section are respectively tapered upwards, and the cone angle of the lower connecting section is smaller than the cone angle of the upper connecting section.

3. The mold for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The lower connecting section and the upper connecting section are respectively polyhedrons, the bottom surfaces of the polyhedrons are parallel to the work table, the cross-sectional areas of the lower connecting section and the upper connecting section gradually decrease in the upward direction, and the top angle of the lower connecting section is smaller than the top angle of the upper connecting section.

4. The mold for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The lower connecting section and the upper connecting section have a smooth transition at the connection point.

5. The mold for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The inwardly contracting angle of the lower connecting section is α, wherein 0°<α≤8°.

6. The mold for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The inwardly contracting angle of the upper connecting section is β, wherein 0°<β<90°.

7. The mold for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The through holes are arranged at the intersections of the transverse intervals and the longitudinal intervals between the mold cores.

8. The mold for preparing glass fiber reinforced plastic grating according to claim 1, characterized in that: The lifting mechanism includes a support base that is liftably arranged on the frame, a push rod connected to the support base and liftably passed through the through hole, and a driving component that is arranged on the frame and is used to drive the support base to move up and down.

9. A wire laying method for preparing glass fiber reinforced plastic grating, which is realized by using the mold for preparing glass fiber reinforced plastic grating according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) Clamping the cut glass fiber directly above the workbench so that it is aligned with the horizontal or vertical spacing between the mold cores in the vertical direction, and with both ends located on the inner side of the baffle; (2) Loosening the glass fiber and allowing it to fall downward into the transverse interval or the longitudinal interval of the mold core. During the falling process of the glass fiber, the glass fiber is guided by the upper connecting section and the lower connecting section respectively.

10. The wire laying method for preparing glass fiber reinforced plastic grating according to claim 9, characterized in that: In step (1), at least two strands of the glass fibers are clamped simultaneously, and in step (2), all strands of the glass fibers are released simultaneously so as to fall synchronously into the transverse interval or the longitudinal interval of the mold core.

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