Glass fiber reinforced plastic pultrusion glue injection and dipping device

Abstract

The utility model discloses a kind of glass fiber reinforced plastic pultrusion forming glue injection dipping device, including glue dipping bucket and heating fixed cavity, one end of glue dipping bucket is equipped with conveying assembly, glue dipping bucket is sequentially provided with pultrusion forming die and heating solidification cavity in the end away from conveying assembly, pultrusion forming die is arranged on reflux component, glue injection mechanism is also equipped on reflux component, reflux component is equipped with auxiliary assembly inside.The vibration device in the auxiliary assembly of the utility model can drive the whole slight vibration of placing seat, on one hand, it assists the flow of glue liquid in reflux tank, and it is convenient to recycle;On the other hand, vibration can reduce the apparent viscosity of resin, improve fluidity, cooperate glue injection mechanism can carry out glue supplement on the surface of glass fiber, especially to the differentiating glue supplement of inner and outer layer in fiber bundle, make glue liquid more easily penetrate to the inside of fiber bundle, enhance the wetting ability to fiber bundle, reduce unimpregnated area between fibers.

Description

Technical Field

[0001] This utility model relates to the field of fiberglass pultrusion molding technology, specifically to a fiberglass pultrusion molding injection and impregnation device. Background Technology

[0002] The manufacturing processes of fiberglass include pultrusion, filament winding, and hand lay-up. The pultrusion process involves mounting glass fiber filaments on a scaffold and guiding them into a resin bath using guide rollers, ensuring each filament is fully impregnated. The resin-impregnated filaments then pass through a preforming mold, a specially designed guide device tailored to the product's cross-sectional shape, which removes excess resin and air bubbles. Next, the filaments enter the forming mold, where they are cured with resin at high temperatures. Finally, they are pulled out by a traction device and cut to the required length by a cutting device.

[0003] However, a series of problems affecting product quality exist during the pultrusion process of glass fiber impregnation. On the one hand, the resin on the surface of the glass fiber may drip; on the other hand, when the fiber bundle passes through the inner wall of the mold, its surface resin is scraped and consumed by the mold due to shear force. Together, these factors lead to uneven resin distribution on the surface of the glass fiber, and this unevenness will further negatively affect the subsequent curing process, reducing the quality and performance of the final product. Utility Model Content

[0004] The purpose of this invention is to provide a fiberglass pultrusion molding injection and impregnation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fiberglass pultrusion molding injection and impregnation device, comprising an impregnation hopper and a heating and fixing cavity, wherein a conveying component is provided at one end of the impregnation hopper, and a pultrusion molding die and a heating and curing cavity are sequentially arranged at the end of the impregnation hopper away from the conveying component, the pultrusion molding die is arranged on a reflux component, and a glue spraying mechanism is also provided on the reflux component, and an auxiliary component is provided inside the reflux component.

[0006] Preferably, in order to facilitate the conveying of glass fiber and subsequent processing such as impregnation, pultrusion molding, and heat curing, the conveying assembly includes a conveying roller set at one end of the impregnation hopper. The conveying roller is used to convey glass fiber roving, and mounting frames are symmetrically provided at the ends of the conveying roller.

[0007] Preferably, the impregnation process is guided to facilitate impregnation and avoid entanglement. Inside the impregnation hopper, guide rollers matching the glass fiber roving are arranged in sequence. A connecting plate is symmetrically arranged at one end of the impregnation hopper near the pultrusion mold, and an auxiliary roller is rotatably arranged between the two connecting plates.

[0008] Preferably, in order to facilitate the recycling of dripping adhesive, the recirculation assembly includes a placement seat disposed at the bottom of the pultrusion mold, and the placement seat is provided with a recirculation groove.

[0009] Preferably, in order to assist vibration, facilitate flow and recycling, and also help the uniform distribution of adhesive on the glass fiber surface, the auxiliary components include vibration devices symmetrically arranged at the bottom of the placement seat, and a heating plate and an insulation layer are arranged sequentially from top to bottom inside the placement seat.

[0010] Preferably, in order to apply adhesive to the surface of the glass fiber, and in conjunction with the vibration device to ensure uniform distribution of adhesive on the surface of the glass fiber, the adhesive spraying mechanism includes a liquid extraction pipe set on the side wall of the impregnation hopper, the liquid extraction pipe being connected to the input end of the delivery pump, the output end of the delivery pump being connected to an outlet pipe, and a first adhesive spraying pipe and a second adhesive spraying pipe being arranged sequentially on one side of the outlet pipe, with adhesive spraying heads equidistantly arranged below the first adhesive spraying pipe and the second adhesive spraying pipe.

[0011] Preferably, to ensure overall stability and firmness, the bottom ends of both the first and second glue spray tubes are fixedly connected to the placement base via a fixing plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The vibration device in the auxiliary component can drive the entire placement seat to vibrate slightly. On the one hand, it helps the adhesive flow in the return tank, making it easy to recycle. On the other hand, the vibration can reduce the apparent viscosity of the resin and improve its fluidity. Combined with the adhesive spraying mechanism, it can apply adhesive to the surface of the glass fiber, especially to differentiate the inner and outer layers of the fiber bundle, making it easier for the adhesive to penetrate into the fiber bundle, enhancing the wetting ability of the fiber bundle, and reducing the unwetted areas between the fibers.

[0014] The auxiliary component has a heating plate and an insulation layer inside the placement seat. The heating plate ensures the fluidity of the adhesive in the return tank, making it easy to recycle and preventing solidification or hardening. The insulation layer reduces heat exchange with the outside environment and ensures the heating effect. The return tank is opened on the placement seat of the return component and is set at an angle to facilitate the recycling of dripping adhesive into the dipping hopper, avoiding waste and cleaning problems caused by adhesive dripping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a fiberglass pultrusion molding injection and impregnation device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the impregnation hopper in a fiberglass pultrusion molding impregnation device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the reflow component in a fiberglass pultrusion injection and impregnation device proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the glue spraying mechanism in a fiberglass pultrusion molding glue injection and impregnation device proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the placement seat in a fiberglass pultrusion injection and impregnation device proposed in this utility model.

[0020] In the diagram: 11. Dipping hopper; 12. Heating and curing chamber; 13. Pultrusion mold; 14. Guide roller; 21. Mounting frame; 22. Conveying roller; 31. Conveying pump; 32. Discharge pipe; 33. Fixing plate; 34. First spray pipe; 35. Second spray pipe; 36. Extraction pipe; 37. Spray head; 41. Placement seat; 42. Return trough; 51. Auxiliary roller; 52. Connecting plate; 61. Vibration device; 62. Heating plate; 63. Insulation layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 This utility model provides an embodiment of a fiberglass pultrusion molding resin impregnation device, comprising an impregnation hopper 11 and a heating and fixing chamber. A conveying assembly is provided on one side of the impregnation hopper 11. The conveying assembly includes a conveying roller 22 at one end of the impregnation hopper 11, which may be equipped with a multi-axis adjustable tension mechanism. The tension is adjusted by a servo motor to ensure uniform fiber unfolding. The conveying roller 22 is used for conveying fiberglass roving. Mounting brackets 21 are symmetrically provided at the ends of the conveying roller 22. The impregnation hopper 11 contains resin liquid and may also be equipped with a temperature control device and a stirring device to prevent vertical stratification. The impregnation hopper 11 contains... The device is equipped with guide rollers 14 that match the glass fiber roving. The impregnation hopper 11 is symmetrically provided with connecting plates 52 at one end near the pultrusion mold 13. An auxiliary roller 51 is rotatably provided between the two connecting plates 52 to facilitate the conveying and guiding of the glass fiber roving, facilitate the impregnation operation, and ensure that the impregnation is thorough. The end of the impregnation hopper 11 away from the conveying components is provided with the pultrusion mold 13 and the heating and curing chamber 12 in sequence, which can facilitate the initial shaping of the fiber-resin, and then heat the resin to cure and form the shape. A traction device and a cutting device are also provided. The technology is relatively mature and will not be described in detail here.

[0023] Please see Figures 1-5To ensure sufficient fiber impregnation and facilitate adhesive recovery, avoiding waste from dripping and inconvenient cleaning, the pultrusion mold 13 is mounted on a return assembly. The return assembly also includes an adhesive spraying mechanism and an auxiliary component. The return assembly includes a placement seat 41 at the bottom of the pultrusion mold 13, with equidistant legs at its bottom to ensure overall stability. A return groove 42 is provided on the placement seat 41 for easy recovery of dripping adhesive. The return groove 42 is inclined, with the lower end facing the impregnation hopper 11, allowing adhesive to flow into the hopper 11. The auxiliary component includes vibration devices 61 symmetrically arranged at the bottom of the placement seat 41. The interior is equipped with a heating plate 62 and an insulation layer 63 arranged sequentially from top to bottom. The heating plate 62 can be electrically heated to ensure the fluidity of the adhesive in the return tank 42, facilitate recycling, and prevent solidification or hardening. The insulation layer 63 can be made of insulation cotton or the like to reduce heat exchange with the outside environment and ensure the heating effect. This is a relatively mature technology and will not be described in detail here. The vibration device 61 can be a vibration motor or an ultrasonic vibration device 61, which can easily vibrate the entire placement seat 41. On the one hand, it assists the adhesive in flowing in the return tank 42 for easy recycling. On the other hand, the vibration can reduce the apparent viscosity of the resin, improve fluidity, make the adhesive more likely to penetrate into the fiber bundle, enhance its wetting ability of the fiber bundle, and reduce the unwetted area between the fibers.

[0024] Please see Figures 1-5 To ensure more uniform resin impregnation on the fiber surface, the resin on the surface of the fiber bundles close to the inner wall of the pultrusion mold 13 is replenished after being scraped and consumed by the mold due to shear force during the pultrusion molding process. For this replenishment, a spraying mechanism is also provided on the return assembly. The spraying mechanism includes a liquid extraction pipe 36 located on the side wall of the impregnation hopper 11, connected to the input end of the delivery pump 31. The output end of the delivery pump 31 is connected to an outlet pipe 32. A first spraying pipe 34 and a second spraying pipe 35 are sequentially arranged on one side of the outlet pipe 32. The middle sections of the first spraying pipe 34 and the second spraying pipe 35 are arc-shaped. Figure 4 As shown, the first spray tube 34 and the second spray tube 35 are both provided with spray nozzles 37 at equal intervals under their arc shape. The bottom ends of the first spray tube 34 and the second spray tube 35 are fixedly connected to the placement seat 41 through the fixing plate 33, which can facilitate the re-spraying of glue on the fibers. At the same time, in conjunction with the vibration device 61, slight vibration is assisted to reduce the apparent viscosity of the resin, improve the fluidity, and make the glue more easily penetrate into the fiber bundle.

[0025] Working Principle: In use, the glass fiber roving is conveyed by the conveying roller 22, guided by the guide roller 14 in the impregnation hopper 11, and then conveyed by the auxiliary roller 51 to the pultrusion mold 13 for initial shaping of the fiber-resin composite. As it passes through the pultrusion mold 13, the resin on the surface of the fiber bundle close to the inner wall of the mold is scraped and consumed by the mold due to shear force. To ensure more uniform impregnation on the fiber surface, the resin is drawn into the outlet pipe 32 by the conveying pump 31 and the extraction pipe 36, and then sprayed out through the spray nozzles 37 under the first spray pipe 34 and the second spray pipe 35. This allows for differentiated resin replenishment between the inner and outer layers of the fiber bundle. The vibration device 61 operates to assist in slight vibration of the entire structure, reducing the apparent viscosity of the resin, improving its fluidity, and making it easier for the adhesive to penetrate into the fiber bundle, ensuring a sufficiently uniform distribution. Then, it passes through the heating and curing chamber 12, where heating and pressurization cause the resin to cure and form, completing the processing. Subsequent processing can be completed through the traction and cutting devices. During the process of the fiber passing through the pultrusion mold 13, spraying adhesive, and conveying, the adhesive will drip and be collected through the return tank 42. The internal heating plate 62 heats the adhesive to prevent it from solidifying and to ensure its fluidity. At the same time, the vibration device 61 operates to facilitate the flow of the adhesive in the return tank 42, thereby facilitating its return to the impregnation hopper 11.

[0026] 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.

Claims

1. A fiberglass pultrusion molding injection and impregnation device, comprising an impregnation hopper (11) and a heating and fixing chamber, characterized in that: One end of the dip hopper (11) is provided with a conveying component. The end of the dip hopper (11) away from the conveying component is provided with a pultrusion molding die (13) and a heating and curing chamber (12) in sequence. The pultrusion molding die (13) is provided on the reflux assembly. The reflux assembly is also provided with a glue spraying mechanism. The reflux assembly is provided with an auxiliary component.

2. The fiberglass pultrusion molding injection and impregnation device according to claim 1, characterized in that: The conveying assembly includes a conveying roller (22) disposed at one end of the impregnation hopper (11). The conveying roller (22) is used for conveying glass fiber roving. The end of the conveying roller (22) is symmetrically provided with mounting brackets (21).

3. The fiberglass pultrusion molding injection and impregnation device according to claim 2, characterized in that: Inside the impregnation hopper (11), guide rollers (14) matching the glass fiber roving are arranged in sequence. A connecting plate (52) is symmetrically arranged at one end of the impregnation hopper (11) near the pultrusion mold (13). An auxiliary roller (51) is rotatably arranged between the two connecting plates (52).

4. The fiberglass pultrusion molding injection and impregnation device according to claim 3, characterized in that: The reflux assembly includes a placement seat (41) disposed at the bottom of the pultrusion die (13), and a reflux groove (42) is provided on the placement seat (41).

5. The fiberglass pultrusion molding injection and impregnation device according to claim 4, characterized in that: The auxiliary components include a vibration device (61) symmetrically arranged at the bottom of the placement seat (41), and a heating plate (62) and a heat insulation layer (63) are arranged sequentially from top to bottom inside the placement seat (41).

6. The fiberglass pultrusion molding injection and impregnation device according to claim 5, characterized in that: The glue spraying mechanism includes a liquid extraction pipe (36) set on the side wall of the glue dipping hopper (11). The liquid extraction pipe (36) is connected to the input end of the delivery pump (31). The output end of the delivery pump (31) is connected to the liquid outlet pipe (32). A first glue spraying pipe (34) and a second glue spraying pipe (35) are arranged sequentially on one side of the liquid outlet pipe (32). Glue spraying heads (37) are equidistantly arranged below the first glue spraying pipe (34) and the second glue spraying pipe (35).

7. The fiberglass pultrusion molding injection and impregnation device according to claim 6, characterized in that: The bottom ends of the first spray tube (34) and the second spray tube (35) are fixedly connected to the placement seat (41) through the fixing plate (33).

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