Tool capable of preheating fiber and resin simultaneously and mounting structure thereof

Abstract

The utility model discloses a tooling capable of simultaneously preheating fiber and resin and a mounting structure thereof, which comprise a gum dipping tank, a pre-discharging device arranged at the front end of the gum dipping tank, a gum extruding device arranged at the rear end of the gum dipping tank, and a preheating device comprising a water circulation preheating system and a drying oven arranged at the front end of the pre-discharging device, the water circulation preheating system comprises a circulation water tank, a circulation water pump, a circulation water plate and a circulation water flow channel arranged in the glue squeezing device. By adopting the structure, not only is the adaptability between the fiber and the resin improved, the fiber is fully infiltrated, but also the resin is helpful to discharge moisture before gelling, the apparent quality of a product is effectively improved, and internal pores are improved. Meanwhile, the water circulation preheating system can improve the heat utilization efficiency and reduce the preheating cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to fiber reinforced composite material pultrusion technical field, concretely relates to a tool and its mounting structure that can preheat fiber and resin simultaneously. BACKGROUND

[0002] Wind power girder board usually adopts composite material pultrusion forming process to prepare. Fiber and resin are main raw materials of pultrusion process, and the fiber of tension device is infiltrated in the impregnation tank and then enters the curing mold to form. In the production of wind power girder board, air hole is a common defect of girder board, which is caused by insufficient resin impregnation or gas cannot be completely discharged in the curing process, and the existence of air hole can weaken the overall strength of the product and reduce its overall performance. By heating fiber and resin, the temperature of fiber surface and resin is improved, which is beneficial to reduce the viscosity of resin, improve the wettability of resin to fiber when entering the mold curing, and help resin to discharge moisture before gelation, effectively improve the apparent quality of product and improve internal porosity.

[0003] In the existing composite material pultrusion forming production, the fiber is usually preheated or not preheated, and the fiber preheating mode is not conducive to improve the apparent quality of product and improve internal porosity. The separate preheating mode has the problems of insufficient compatibility between fiber and resin, high production cost and inability to effectively improve the apparent quality of product and improve internal porosity. UTILITY MODEL CONTENT

[0004] In order to solve the technical problems of insufficient compatibility between fiber and resin and high production cost, the utility model provides a tool and its mounting structure which can preheat fiber and resin simultaneously.

[0005] The technical scheme is as follows:

[0006] The first aspect of the application relates to a tool which can preheat fiber and resin simultaneously, comprising an impregnation tank, a pre-discharge device is arranged at the front end of the impregnation tank, an extrusion device is arranged at the rear end of the impregnation tank, a preheating device is further included, the preheating device includes a water circulation preheating system and an oven arranged at the front end of the pre-discharge device, the water circulation preheating system includes a circulating water tank, a circulating water pump, a circulating water plate and a circulating water flow channel arranged in the extrusion device, the circulating water plate is arranged in parallel at the bottom of the oven and closely adheres to the bottom plate of the oven, a circulating water heating passage is arranged on the circulating water plate, the water outlet of the circulating water tank is communicated with the water inlet of the circulating water pump, the water outlet of the circulating water pump is communicated with the water inlet of the circulating water heating passage through a pipeline, the water outlet of the circulating water heating passage is communicated with the water inlet of the circulating water flow channel through a pipeline, and the water outlet of the circulating water flow channel is communicated with the water inlet of the circulating water tank through a pipeline.

[0007] The above tool capable of simultaneously preheating fibers and resin can preheat fibers and heat circulating water in the circulating water heating passage in the oven. The circulating water preheating system simultaneously preheats fibers and resin in the extrusion device, improves the adaptability between fibers and resin, fully soaks fibers, and helps resin to discharge moisture before gelation, effectively improves the apparent quality of products and improves internal porosity. Meanwhile, the water circulation preheating system can improve heat utilization efficiency and reduce preheating cost.

[0008] In some embodiments, the front end inlet and the rear end outlet of the oven are both provided with fiber separation devices with the same structure, and the fiber separation devices are both in a grid structure.

[0009] In some embodiments, the top cover of the oven is detachable.

[0010] In some embodiments, the oven and the circulating water plate are both wrapped with a heat insulation layer.

[0011] In some embodiments, the pre-discharge device is provided with a plurality of strip-shaped pre-discharge holes extending in the horizontal direction and uniformly distributed from top to bottom, the extrusion device is provided with a plurality of extrusion slots extending in the horizontal direction and uniformly distributed from top to bottom, and the pre-discharge device, the extrusion device, and the U-shaped groove therebetween jointly enclose the gel dipping groove with an open top.

[0012] In some embodiments, the bottom of the U-shaped groove is provided with a glue injection port, and one side groove wall of the U-shaped groove is provided with a glue overflow hole.

[0013] In some embodiments, the extrusion device is composed of a plurality of extrusion plates placed and fixedly connected from top to bottom, and each two adjacent extrusion plates form an extrusion slot.

[0014] Each of the extrusion plates is provided with at least one left-right through circulating water heat conduction through hole, and all the circulating water heat conduction through holes are connected in series through a first series pipeline to form the circulating water flow channel.

[0015] In some embodiments, the circulating water plate is provided with left-right through circulating water heating through holes arranged side by side, and all the circulating water heating through holes are connected in series through a second series pipeline to form the circulating water heating passage.

[0016] The first aspect of the present application relates to the installation structure of the above tool capable of simultaneously preheating fibers and resin, the rear end of the extrusion device is provided with a forming die, and the feeding port of the forming die is opposite to the discharging port of the extrusion device.

[0017] The installation structure of the above-mentioned tool capable of simultaneously preheating the fiber and the resin has all the advantages of the tool capable of simultaneously preheating the fiber and the resin. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the present application from another angle;

[0019] Figure 2 is a structural schematic view of the present application from another angle;

[0020] Figure 3 is a circulating water schematic view of the preheating device;

[0021] Figure 4 is a structural schematic view of the impregnation tank, the pre-dispersion device and the extrusion device;

[0022] Figure 5 is a top view of Figure 4 ;

[0023] Figure 6 is a B-B sectional view in Figure 5 ;

[0024] Figure 7 is a top view of the oven and the circulating water plate;

[0025] Figure 8 is an A-A sectional view in Figure 7 . DETAILED DESCRIPTION

[0026] The present application will be further described below in combination with the embodiments and the drawings.

[0027] Embodiment 1

[0028] As shown in Figure 1 and Figure 2 , a tool capable of simultaneously preheating the fiber and the resin mainly comprises an impregnation tank 1, a pre-dispersion device 2, an extrusion device 3, an oven 4 and a water circulating preheating system.

[0029] As shown in Figures 1 to 6 , the tool capable of simultaneously preheating the fiber and the resin mainly comprises an impregnation tank 1, a pre-dispersion device 2, an extrusion device 3, an oven 4 and a water circulating preheating system.As shown, resin is injected into the impregnation tank 1 to impregnate the fibers. In this embodiment, the impregnation tank 1 is a tank-shaped structure with an open top, which is formed by the pre-arrangement device 2, the U-shaped groove 9 and the extrusion device 3 arranged in front of each other. The pre-arrangement device 2, the U-shaped groove 9 and the extrusion device 3 are all fixedly installed on the mounting bracket 11. The bottom of the U-shaped groove 9 is provided with a resin injection port 9a, and the resin is injected from the resin injection port 9a at the bottom of the impregnation tank 1 to avoid air being pressed into the resin. One side wall of the U-shaped groove 9 is provided with a glue overflow hole 9b, and the excess resin in the impregnation tank 1 flows out of the glue overflow hole 9b, so that the resin in the impregnation tank 1 continuously circulates to avoid the resin in the impregnation tank 1 from continuously aging under heat. The resin in the impregnation tank 1 moves in the direction of the forming mold 10 under the driving of the fibers, and the excess resin extruded by the extrusion device 3 flows in the opposite direction, so that the resin in the impregnation tank 1 forms a microcirculation, and the temperature tends to be uniform;

[0030] The pre-arrangement device 2 arranges the fibers in a certain shape to make the fiber impregnation more sufficient. In this embodiment, the pre-arrangement device 2 is provided with a plurality of strip-shaped pre-arrangement holes 2a extending horizontally and uniformly distributed from top to bottom, and the pre-arrangement device 2 is composed of a plurality of strip-shaped pre-arrangement plates 2b overlapped and fixedly connected from top to bottom, and a strip-shaped pre-arrangement hole 2a is formed between any two adjacent strip-shaped pre-arrangement plates 2b;

[0031] The extrusion device 3 can extrude the excess resin after the fiber is impregnated to avoid excessive resin from accumulating and aging at the inlet of the forming mold 10 with a higher temperature. The extrusion device 3 is provided with a plurality of extrusion seams 3b extending horizontally and uniformly distributed from top to bottom, and the extrusion device 3 is composed of a plurality of extrusion plates 3c overlapped and fixedly connected from top to bottom, and an extrusion seam 3b is formed between any two adjacent extrusion plates 3c. Each extrusion plate 3c is provided with at least one left-right through circulation water heat conduction through hole 3a3, and all the circulation water heat conduction through holes 3a3 are connected in series to form a circulation water flow channel 3a through a first series pipeline 3a4. The extrusion device 3 is provided with a temperature sensor (not shown in the figure), and the start and stop of the circulation water pump 6 is controlled according to the temperature detected by the temperature sensor to control the preheating temperature of the extrusion device 3.

[0032] As Figures 1 to 8As shown, the preheating device comprises a water circulation preheating system and an oven 4 arranged at the front end of the prearrangement device 2. The oven 4 can preheat the fibers, and the top cover 4a of the oven 4 can be detached to facilitate the guiding of the fibers. The front end inlet and the rear end outlet of the oven 4 are both provided with fiber separating devices 8 of the same structure, and the fiber separating devices 8 are both in a grid structure. The fiber separating devices 8 not only ensure that the fibers are regularly arranged in a certain direction to avoid the phenomenon of fiber knotting during traction, but also make each part of the separated fibers not contact each other, increase the heating area of the fibers, and improve the heating efficiency. In the embodiment, the fiber separating device 8 comprises an outer frame 8c, a plurality of horizontal metal rods 8a and a plurality of vertical metal rods 8b. The shape of the outer frame 8c is adapted to the shape of the inlet and outlet of the oven 4, and the outer frame 8c is fixedly installed at the front end inlet and the rear end outlet of the oven 4. The plurality of horizontal metal rods 8a are evenly distributed and installed on the outer frame 8c from top to bottom, and the plurality of vertical metal rods 8b are evenly distributed and installed on the outer frame 8c from left to right. The number of the horizontal metal rods 8a and the vertical metal rods 8b can be adjusted according to the number of the fibers.

[0033] The water circulation preheating system comprises a circulating water tank 5, a circulating water pump 6, a circulating water plate 7 and a circulating water flow channel 3a arranged in the glue extruding device 3. The circulating water plate 7 is arranged in parallel at the bottom of the oven 4 and closely adheres to the bottom plate of the oven 4. The oven 4 and the circulating water plate 7 are both coated with a heat insulation layer, which can avoid heat loss. The circulating water plate 7 is provided with a circulating water heating passage. Specifically, the circulating water plate 7 is provided with left and right through circulating water heating through holes 7c arranged side by side. All the circulating water heating through holes 7c are connected in series by a second series pipeline 7d to form the circulating water heating passage. The water outlet of the circulating water tank 5 is communicated with the water inlet of the circulating water pump 6. The water outlet of the circulating water pump 6 is communicated with the water inlet 7a of the circulating water heating passage through a pipeline. The water outlet 7b of the circulating water heating passage is communicated with the water inlet 3a1 of the circulating water flow channel 3a through a pipeline. The water outlet 3a2 of the circulating water flow channel 3a is communicated with the water inlet of the circulating water tank 5 through a pipeline. When the oven 4 preheats the fibers, the circulating water in the circulating water heating passage of the circulating water plate 7 can be heated at the same time, which greatly improves the heat utilization rate. The circulating water of the water preheating system can circulate in the circulating water tank 5, the circulating water heating passage of the circulating water plate 7 and the circulating water flow channel 3a of the glue extruding device 3. The heat for preheating the resin comes from two parts. One part is the heat transferred to the resin in the dipping tank 1 after the heated fibers enter the dipping tank 1. The other part is the heat for heating the resin again after the heated circulating water enters the circulating water flow channel 3a of the glue extruding device 3. Preheating the resin not only improves the wettability of the resin to the fibers, but also helps the resin to discharge water before gelation.

[0034] Embodiment 2:

[0035] As Figure 1 andFigure 2 As shown, the rear end of the glue extruding device 3 is provided with a forming die 10, and the feeding port of the forming die 10 is opposite to the discharging port of the glue extruding device 3. The fibers after preheating, prearrangement, soaking and glue extruding enter the forming die 10 to be solidified and formed, and the apparent quality and internal porosity of the product can be effectively improved.

[0036] Finally, it should be noted that the above description is only the preferred embodiments of the present application, and those skilled in the art can make various similar expressions under the inspiration of the present application without deviating from the purpose and claims of the present application. Such changes fall within the scope of the present application.

Claims

1. A tool capable of simultaneously preheating fibers and resin, comprising a resin dipping tank (1), the front end of the resin dipping tank (1) is provided with a pre-dispersion device (2), and the rear end is provided with a resin extrusion device (3), characterized in that: The preheating device comprises a water circulation preheating system and an oven (4) arranged at the front end of the pre-discharging device (2), the water circulation preheating system comprises a circulating water tank (5), a circulating water pump (6), a circulating water plate (7) and a circulating water flow channel (3a) arranged in the glue extruding device (3), the circulating water plate (7) is arranged in parallel at the bottom of the oven (4) and closely adheres to the bottom plate of the oven (4), the circulating water plate (7) is provided with a circulating water heating passage, the water outlet of the circulating water tank (5) is communicated with the water inlet of the circulating water pump (6), the water outlet of the circulating water pump (6) is communicated with the water inlet (7a) of the circulating water heating passage through a pipeline, the water outlet (7b) of the circulating water heating passage is communicated with the water inlet (3a1) of the circulating water flow channel (3a) through a pipeline, and the water outlet (3a2) of the circulating water flow channel (3a) is communicated with the water inlet of the circulating water tank (5) through a pipeline.

2. The tool capable of simultaneously preheating fiber and resin according to claim 1, characterized in that: The front end inlet and the rear end outlet of the oven (4) are both provided with fiber separating devices (8) with the same structure, and the fiber separating devices (8) are both in a grid structure.

3. The tool capable of simultaneously preheating fiber and resin according to claim 1 or 2, characterized in that: The top cover (4a) of the oven (4) can be detached.

4. The tool capable of simultaneously preheating fiber and resin of claim 1, wherein: The oven (4) and the circulating water plate (7) are both wrapped with a heat insulation layer.

5. The tool capable of simultaneously preheating fiber and resin of claim 1, wherein: The pre-discharging device (2) is provided with a plurality of strip-shaped pre-discharging holes (2a) extending in the horizontal direction and uniformly distributed from top to bottom, and the glue extruding device (3) is provided with a plurality of extrusion seams (3b) extending in the horizontal direction and uniformly distributed from top to bottom, and the pre-discharging device (2), the glue extruding device (3) and the U-shaped groove (9) therebetween jointly enclose the glue dipping groove (1) with an open top.

6. The tool capable of simultaneously preheating fiber and resin according to claim 5, characterized in that: The bottom of the U-shaped groove (9) is provided with a glue injection port (9a), and one side groove wall of the U-shaped groove (9) is provided with a glue overflow hole (9b).

7. The tool capable of simultaneously preheating fiber and resin according to claim 5, characterized in that: The glue extruding device (3) is composed of a plurality of glue extruding plates (3c) overlapped and fixedly connected from top to bottom, and each two adjacent glue extruding plates (3c) form an extrusion seam (3b). Each of the glue extruding plates (3c) is provided with at least one left-right through circulating water heat conduction through hole (3a3), and all the circulating water heat conduction through holes (3a3) are connected in series to form the circulating water flow channel (3a) through a first series pipeline (3a4).

8. The tool capable of simultaneously preheating fiber and resin of claim 1, wherein: The circulating water plate (7) is provided with left-right through circulating water heating through holes (7c) arranged side by side, and all the circulating water heating through holes (7c) are connected in series to form the circulating water heating passage through a second series pipeline (7d).

9. An installation structure of the tool capable of simultaneously preheating a fiber and a resin according to any one of claims 1 to 8, characterized by: The rear end of the glue extruding device (3) is provided with a forming die (10), and the feeding port of the forming die (10) is opposite to the discharging port of the glue extruding device (3).

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