Gum dipping device for pultrusion process

Abstract

The utility model discloses a gum dipping device for a pultrusion process, which comprises a gum dipping tank, openings are respectively arranged at two ends of the gum dipping tank in the length direction, the gum dipping tank is arranged on a pultrusion platform, and the gum dipping tank is positioned between a layered yarn row and a pre-forming die. Glue extruding plates are detachably installed at the two ends, provided with openings, of the glue dipping groove respectively, a yarn pressing assembly is installed between the pair of glue extruding plates, a plurality of glue extruding holes are formed in the glue extruding plates, and a plurality of first threaded holes are formed in the side wall of the glue dipping groove; second threaded holes matched with the first threaded holes are formed in the two side walls of the glue extruding plate correspondingly. Compared with the prior art, the gum dipping device for the pultrusion process can control the angle level of fibers entering a pultrusion mold, control the tension of the fibers, reduce the stress of pultrusion products, facilitate improvement of the bending problem of the pultrusion products after polishing, enable the fibers to be better infiltrated, and reduce the problems that the products cannot be infiltrated thoroughly and the like.

Description

Technical Field

[0001] This utility model belongs to the field of dip coating technology, specifically relating to a dip coating device for pultrusion molding process. Background Technology

[0002] With the increasing demand for lightweight, high-strength composite materials, pultrusion molding has become an important manufacturing method for fiber composite profiles. This process involves using fiber-reinforced materials, laying premixed resin in a mold through a pultrusion device, and shaping it. The final product typically possesses excellent mechanical properties and appearance.

[0003] In traditional pultrusion processes, fiber impregnation typically employs a vertical impregnation system. When the fibers enter the mold after passing through the impregnation device, a significant angle is present, leading to excessive internal stress within the fibers. This angle causes greater tensile force during molding, resulting in bending and deformation of the final product during use and polishing. Furthermore, traditional impregnation tanks also suffer from uneven impregnation, air bubbles, and resin waste, all of which negatively impact product quality.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a pultrusion molding process dip device that can solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] A pultrusion molding process dip device includes a dip tank with openings at both ends along its length. The dip tank is mounted on a pultrusion platform and located between a layered yarn stack and a preforming mold. Extrusion plates are detachably mounted at both ends of the dip tank with openings, and a yarn pressing assembly is installed between a pair of extrusion plates.

[0008] In one or more embodiments of this utility model, the extrusion plate is provided with a plurality of extrusion holes, the side wall of the impregnation tank is provided with a plurality of first threaded holes, the two side walls of the extrusion plate are respectively provided with second threaded holes that match the first threaded holes, and the impregnation tank is equipped with a first bolt that matches the first threaded hole, one end of the first bolt passes through the first threaded hole and is threadedly connected to the second threaded hole.

[0009] In one or more embodiments of this utility model, a baffle that matches the extrusion plate is fixedly connected to one end of the impregnation tank away from the opening of the impregnation tank.

[0010] In one or more embodiments of this utility model, a plurality of connecting brackets are fixedly connected to the lower end of the impregnation tank.

[0011] In one or more embodiments of the present invention, the yarn pressing assembly includes a mounting frame with a plurality of mounting holes, and a yarn pressing rod that matches the mounting holes is mounted on the mounting frame.

[0012] In one or more embodiments of this utility model, a receiving groove is provided on the outer side of the mounting hole, a limiting piece matching the receiving groove is fixedly connected to one end of the yarn pressing rod, a fourth threaded hole is provided on the other end of the yarn pressing rod, and a second bolt matching the receiving groove is installed on the mounting bracket, with one end of the second bolt passing through the receiving groove and threadedly connected to the fourth threaded hole.

[0013] In one or more embodiments of this utility model, the number of yarn pressing rods is at least four.

[0014] In one or more embodiments of this utility model, the yarn pressing assembly includes a U-shaped slider that matches the mounting frame. The U-shaped slider is slidably connected to the impregnation tank, which has a groove. The inner wall of the U-shaped slider is fixedly connected to a protrusion that matches the groove.

[0015] In one or more embodiments of this utility model, the mounting bracket is provided with a first through hole that matches the U-shaped slider, the U-shaped slider is provided with a third threaded hole that matches the first through hole, the mounting bracket is provided with a third bolt that matches the first through hole, one end of the third bolt passes through the first through hole and is threadedly connected to the protrusion, and one end of the third bolt can contact one end of the third bolt.

[0016] In one or more embodiments of this utility model, a heat exchange cavity is provided on the inner wall of the impregnation tank, a water circulation pipeline matching the heat exchange cavity is installed on the impregnation tank, and a glue discharge port matching the impregnation tank is fixedly connected to the impregnation tank.

[0017] Compared with the prior art, the impregnation device for pultrusion molding process of this utility model can control the angle and level of the fiber entering the pultrusion die, control its tension, reduce the stress of the pultruded product itself, help improve the bending problem of the pultruded product after grinding, and also make the fiber impregnation better, reducing problems such as incomplete impregnation of the product. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a pultrusion molding process dip device according to one embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of a pultrusion molding process dip device according to one embodiment of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of a pultrusion molding process dip device according to one embodiment of the present invention. Figure 3 ;

[0022] Figure 4 This is an exploded view of a pultrusion molding process impregnation device according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the mounting bracket in one embodiment of the present invention;

[0024] Figure 6 This is a cross-sectional view of a pultrusion molding process impregnation device according to an embodiment of the present invention.

[0025] Explanation of key figure labels:

[0026] 1. Impregnation tank; 101. Heat exchange chamber; 102. Slide groove; 103. First threaded hole; 2. Connecting frame; 201. Waist hole; 3. Stop bar; 4. Extrusion plate; 401. Extrusion hole; 402. Second threaded hole; 5. First bolt; 6. U-shaped slider; 601. Protrusion; 602. Third threaded hole; 7. Mounting frame; 701. First through hole; 702. Mounting hole; 8. Storage groove; 9. Yarn pressing rod; 901. Fourth threaded hole; 10. Second bolt; 11. Third bolt; 12. Glue discharge port; 13. Water circulation pipeline. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] like Figures 1-4 As shown, an impregnation device for pultrusion molding in one embodiment of this utility model includes an impregnation tank 1. Openings are provided at both ends of the impregnation tank 1 along its length. The impregnation tank 1 is generally installed on a pultrusion platform and is located on a conventional impregnation tank between the layered yarn stack and the preforming mold. Specifically, multiple connecting brackets 2 are fixedly connected to the lower end of the impregnation tank 1. The connecting brackets 2 have waist holes 201. Through the cooperation of the connecting brackets 2 and bolts, the impregnation tank 1 and the conventional impregnation tank can be fixed together.

[0029] like Figures 1-4 As shown, the impregnation tank 1 has extrusion plates 4 installed at both open ends. The extrusion plates 4 not only guide the yarn but also extrude resin. The extrusion plates 4 have multiple extrusion holes 401. One end of the fiber enters the different extrusion holes 401 in an S-shape. During the pulling process, the resin on the fiber is squeezed off.

[0030] Specifically, the impregnation tank 1 is provided with a plurality of first threaded holes 103, the extrusion plate 4 is provided with a second threaded hole 402 that matches the first threaded hole 103, and a first bolt 5 that matches the first threaded hole 103 is installed on the impregnation tank 1. One end of the first bolt 5 can pass through the first threaded hole 103 and be threadedly connected to the second threaded hole 402, thereby fixing the impregnation tank 1 and the extrusion plate 4.

[0031] In addition, to facilitate quick positioning of the first threaded hole 103 and the second threaded hole 402, a stop strip 3 matching the first threaded hole 103 is fixedly connected to the inner wall of the impregnation tank 1. When installing the extrusion plate 4, it is only necessary to attach one side wall of the extrusion plate 4 to the stop strip 3 and the bottom wall to the bottom wall of the impregnation tank 1, so that the first bolt 5 can pass through the first threaded hole 103 and be threadedly connected to the second threaded hole 402.

[0032] like Figures 1-4 As shown, a yarn pressing assembly is installed between the two extrusion plates 4. The yarn pressing assembly can effectively separate the fibers in the impregnation tank 1, and avoid yarn tangling as much as possible in the impregnation tank 1.

[0033] Specifically, such as Figures 1-6As shown, the yarn pressing assembly includes a mounting frame 7. Multiple mounting holes 702 are evenly distributed from top to bottom on the mounting frame 7. Yarn pressing rods 9, matching the mounting holes 702, are mounted on the mounting frame 7 and can be fixed to the mounting frame 7 through the mounting holes 702. Generally, the yarn pressing rods 9 are detachable. A receiving groove 8 matching the mounting hole 702 is provided on the outer wall of the mounting hole 702. One end of the yarn pressing rod 9 is fixedly connected to a limiting piece matching the receiving groove 8. One end of the yarn pressing rod 9 passes through the mounting hole 702 and is located in another mounting hole 702. A fourth threaded hole 901 is provided at the end of the yarn pressing rod 9 located in the other mounting hole 702. A second bolt 10 passes through the receiving groove 8 and is threadedly connected to the fourth threaded hole 901. The second bolt 10 can be completely received in the receiving groove 8, and the second bolt 10 matches the mounting hole 702, thereby fixing the yarn pressing rod 9 and the mounting frame 7.

[0034] After a period of use, if you want to replace the yarn pressing rod 9, simply unscrew the second bolt 10 from the fourth threaded hole 901, and then push the yarn pressing rod 9 towards the end with the limiting piece to complete the disassembly of the yarn pressing rod 9.

[0035] Generally, the number of yarn pressing rods 9 is no less than 4 extrusion plates, but the specific number of yarn pressing rods 9 can be changed according to the actual needs of the product.

[0036] like Figures 1-4 As shown, the yarn pressing assembly also includes multiple U-shaped sliders 6, which are slidably connected to the impregnation tank 1. A protrusion 601 is fixedly connected to the inner wall of the U-shaped slider 6, and a groove 102 matching the protrusion 601 is provided on the impregnation tank 1. The groove 102 and the protrusion 601 cooperate with each other, making it difficult for the U-shaped slider 6 and the impregnation tank 1 to detach.

[0037] like Figures 1-4 As shown, the position of one of the first threaded holes 103 intersects with the position of the slide groove 102. If a first bolt 5 is installed in the first threaded hole 103, when the U-shaped slider 6 slides on the glue-impregnating tank 1, its sliding distance is between the two first bolts 5, and the first bolts 5 can block the U-shaped slider 6, making it difficult for the U-shaped slider 6 to slide off the glue-impregnating tank 1. After the first bolts 5 are removed, the U-shaped slider 6 slides towards the end without the first bolts 5, and the U-shaped slider 6 can directly detach from the glue-impregnating tank 1.

[0038] like Figures 1-4As shown, the mounting bracket 7 has a first through hole 701, and the U-shaped slider 6 has a third threaded hole 602 that matches the first through hole 701. The mounting bracket 7 is equipped with a third bolt 11 that matches the first through hole 701. One end of the third bolt 11 passes through the first through hole 701 and is threadedly connected to the third threaded hole 602. One end of the third bolt 11 can contact the upper end face of the impregnation tank 1. When the third bolt 11 is tightened, the third bolt 11 can increase the friction between the U-shaped slider 6 and the impregnation tank 1, thereby enabling the U-shaped slider 6 to lock with the impregnation tank 1.

[0039] In other words, the mounting frame 7 is slidably connected to the impregnation tank 1, and the number of mounting frames 7 can be increased or decreased according to actual usage. By setting mounting frames 7 of different specifications and the yarn pressing rods 9 on the mounting frames 7, the fiber entry angle and delivery angle can be changed. By setting multiple mounting frames 7, the fiber impregnation time can be increased or changed, which is beneficial for use with different products.

[0040] like Figure 6 As shown, a heat exchange chamber 101 is provided on the impregnation tank 1, and a water circulation pipe 13 matching the heat exchange chamber 101 is installed on the impregnation tank 1. Hot water can be circulated into the heat exchange chamber 101 through the water circulation pipe 13, thereby ensuring the temperature inside the impregnation tank 1 and preventing the glue from solidifying due to unstable temperature inside the impregnation tank 1. The water circulation pipe 13 is prior art, therefore, it will not be described in detail in this embodiment.

[0041] like Figures 1-3 As shown, the bottom wall of the impregnation tank 1 is also fixedly connected to a glue discharge port 12, through which the glue in the impregnation tank 1 can be discharged.

[0042] When using, such as Figure 6 As shown, the fibers enter the extrusion plate 4 after passing through the original impregnation tank. One end of the fiber passes through the extrusion holes 401 in an S-shape. After passing through the extrusion holes 401, one end of the fiber passes through the pressing rod 9 and is subjected to fiber separation treatment to avoid the problem of fiber tangling in the impregnation tank 1 as much as possible. The fibers after fiber separation treatment are stretched in the horizontal direction, thereby reducing the internal stress of the fibers.

[0043] Compared to vertical impregnation systems, the device of this invention can control the angle between the fiber and the die opening during impregnation, thereby reducing the internal stress of the pultruded product. The unique impregnation method allows for more thorough fiber impregnation. Combined with the extrusion plate 4, it can improve defects such as deformation after grinding, uneven impregnation, easy generation of bubbles, and resin waste in pultruded products.

[0044] Finally, the device of this invention is applicable to the vast majority of pultruded products, including but not limited to pultruded sheets, pultruded reinforcing bars, and pultruded tubes.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A resin impregnation device for a pultrusion process, characterized by, The utility model relates to a kind of pultrusion platform, including: Impregnation tank, the length direction of the impregnation tank is opened with opening respectively at both ends, the impregnation tank is installed on pultrusion platform, and the impregnation tank is between layered yarn row and preform mold; The impregnation tank is detachably installed with extrusion rubber plate respectively at both ends with opening, and a pair of extrusion rubber plates are installed with yarn pressing assembly.

2. The impregnation device for a pultrusion process according to claim 1, characterized in that A plurality of extrusion rubber holes are opened on the extrusion rubber plate, a plurality of first threaded holes are opened on the side wall of the impregnation tank, second threaded holes matched with the first threaded holes are respectively opened on the two side walls of the extrusion rubber plate, and first bolts matched with the first threaded holes are installed on the impregnation tank, one end of the first bolt is threadedly connected through the first threaded hole and the second threaded hole.

3. The impregnation device for a pultrusion process according to claim 1 or 2, characterized in that The impregnation tank is fixedly connected with a blocking strip matched with the extrusion rubber plate at the end away from the opening of the impregnation tank.

4. The device according to claim 1, wherein A plurality of connecting frames are fixedly connected to the lower end of the impregnation tank.

5. The device according to claim 1, wherein The yarn pressing assembly includes a mounting bracket, a plurality of mounting holes are opened on the mounting bracket, and yarn pressing rods matched with the mounting holes are installed on the mounting bracket.

6. The device according to claim 5, wherein A receiving groove is opened on the outside of the mounting hole, a limiting piece matched with the receiving groove is fixedly connected to one end of the yarn pressing rod, a fourth threaded hole is opened at the other end of the yarn pressing rod, a second bolt matched with the receiving groove is installed on the mounting bracket, and one end of the second bolt is threadedly connected through the receiving groove and the fourth threaded hole.

7. The device according to claim 6, wherein The number of yarn pressing rods is at least four.

8. The device according to any one of claims 5 to 7, wherein The yarn pressing assembly includes a U-shaped slider matched with the mounting bracket, the U-shaped slider is slidingly connected to the impregnation tank, a sliding groove is opened on the impregnation tank, and a protrusion matched with the sliding groove is fixedly connected to the inner wall of the U-shaped slider.

9. The device according to claim 8, wherein A first through hole matched with the U-shaped slider is opened on the mounting bracket, a third threaded hole matched with the first through hole is opened on the U-shaped slider, a third bolt matched with the first through hole is installed on the mounting bracket, one end of the third bolt is threadedly connected through the first through hole and the protrusion, and one end of the third bolt can contact one end of the third bolt.

10. The device according to claim 1, wherein A heat exchange cavity is opened on the inner wall of the impregnation tank, and a water circulation pipeline matched with the heat exchange cavity is installed on the impregnation tank. A glue discharge port matched with the impregnation tank is fixedly connected to the impregnation tank.

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