Glue dipping tank with controllable temperature and variable glue dipping modes

Abstract

The invention relates to the technical field of fiber impregnation, and discloses a temperature-controllable impregnation-mode-variable impregnation tank which comprises an outer impregnation tank shell and an inner impregnation tank shell, and a constant-temperature circulating water tank is mounted between a water inlet pipeline and a water outlet pipeline. The bearing set, the fixing support, the upper impregnation roller mounting position and the lower impregnation roller mounting position are arranged on the glue tank inner shell, the lower impregnation mode or the upper impregnation mode can be selected and switched according to the specific condition of a winding forming workpiece, and the production flexibility is greatly improved; by arranging the folded plate and the plastic cloth in the glue tank inner shell, the volume of the glue dipping tank can be changed, so that the glue dipping tank is suitable for not only a small amount of resin with multiple glue preparation requirements but also a large amount of resin with multiple glue preparation requirements, and the coping capacity of the glue dipping tank to different resins is improved; and the heating wire and the heat dissipation fan are arranged in the constant-temperature circulating water tank, so that the circulating water can be cooled and heated.

Description

Technical Field

[0001] The invention relates to the technical field of fiber dipping, in particular to a dipping tank with controllable temperature and variable dipping mode. Background Art

[0002] The wet winding process utilizes the excellent properties of fiber-reinforced composite materials to form composite products by combining fiber prepreg with a mold. The core of this process is to soak the fiber in the resin matrix in the impregnation tank equipped with the winding machine so that it is in full contact with the resin matrix, and then solidify the fiber layer by layer through winding or lamination to finally form a solid composite product; the resin concentration and immersion time need to be controlled during the impregnation process to ensure that the fiber surface is evenly covered with resin.

[0003] The dipping tank currently used in wet winding forming wrapping machines can only be used for one of the dipping methods, upper dipping and lower dipping; the volume of the dipping tank is determined when the wrapping machine leaves the factory and cannot be changed; the temperature control method of the dipping tank can only be used for heating treatment but not cooling treatment; this dipping tank with a single form and function has poor production matching and flexibility. Summary of the invention

[0004] The object of the present invention is to provide a temperature-controllable dipping tank with a variable dipping mode to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A glue dipping tank with controllable temperature and variable glue dipping mode, comprising a glue tank outer shell and a glue tank inner shell, a hollow structure between the glue tank outer shell and the glue tank inner shell, and the hollow structure is filled with circulating water, a level gauge for detecting the circulating water level is embedded in the lower part of the inner side of the glue tank inner shell, a water inlet is provided at the lower part of one end of the glue tank outer shell, and a water outlet is provided at the upper part of the other end of the glue tank outer shell, one end of the water outlet is connected to a water outlet pipeline, one end of the water inlet is connected to a water inlet pipeline, and a constant temperature circulating water tank is installed between the water inlet pipeline and the water outlet pipeline.

[0006] As a further solution of the present invention: a group of fixed brackets are arranged on one side of the front and rear ends of the inner shell of the glue tank, and a group of bearing groups are arranged on the other side of the front and rear ends of the inner shell of the glue tank. The area between the fixed brackets is the installation position of the lower dipping glue roller used in the production by the lower dipping glue method, and the area between the bearing groups is the installation position of the upper dipping glue roller used in the production by the upper dipping glue method.

[0007] As a further solution of the present invention: a triangular folding plate is placed inside the inner shell of the glue tank between the lower glue dipping roller installation position and the upper glue dipping roller installation position.

[0008] As a further solution of the present invention: a plastic sheet is laid in the space separated by the folding plate and the inner shell of the glue groove.

[0009] As a further solution of the present invention: a partition plate is vertically arranged inside the constant temperature circulating water tank to divide the constant temperature circulating water tank into two independent left and right cavities, wherein a first temperature sensor is arranged at the lower end of the inner side wall of the left cavity, and a second temperature sensor is arranged at the lower end of the inner side wall of the right cavity.

[0010] As a further solution of the present invention: a circulation pump is installed on the upper part of the left cavity, the input end of the circulation pump is connected to a water pumping pipe, the water pumping pipe extends into the lower part of the left cavity, and a heating wire is installed at the lower position of the left cavity.

[0011] As a further solution of the present invention: the output end of the circulation pump is connected to the water inlet pipeline, and one side of the right cavity is connected to the water outlet pipeline.

[0012] As a further solution of the present invention: a cooling fan is embedded in the upper end of the cavity on the right, and an air inlet is opened at the upper part of one end of the cavity on the right, a baffle is arranged inside the cavity on the right between the air inlet and the cooling fan, and a valve is installed on the inner side of the partition plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges a bearing group, a fixed bracket, an upper dipping roller installation position and a lower dipping roller installation position on the inner shell of the glue tank, so that the lower dipping mode or the upper dipping mode can be selected and switched according to the specific situation of the winding forming part, thereby greatly improving the flexibility of production; by arranging a folding plate and a plastic cloth in the inner shell of the glue tank, the volume of the dipping tank can be changed, so that it is suitable for resins with small amount and multiple glue preparation requirements and large amount and small number of glue preparation requirements, thereby improving the ability of the dipping tank to cope with different resins; by arranging a heating wire and a heat dissipation fan in the constant temperature circulating water tank, the circulating water can be cooled and heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a main schematic diagram of the lower dipping method in the prior art; Figure 2 It is a left schematic diagram of the lower dipping method in the prior art; Figure 3 It is a main schematic diagram of the upper dipping method in the prior art; Figure 4 It is a left schematic diagram of the upper dipping method in the prior art; Figure 5 It is a schematic diagram of the main view in a temperature-controllable dipping tank with a variable dipping mode; Figure 6 The main schematic diagram is a constant temperature circulating water tank in a temperature-controllable dipping tank with a variable dipping mode.

[0015] Schematic diagram of the glue dipping tank of the conventional wet winding machine In the figure: 1, dry fiber bundle; 2, fiber bundle after dipping; 3, entry roller; 4, exit roller; 5, first glue tank shell; 6, first glue tank inner shell; 7, first liquid level gauge; 8, interlayer water; 9, resin; 10, heating rod; 11, dipping roller; 12, dipping roller shaft; 13, first fixed bracket; 14, first bearing group; 15, glue tank shell; 16, glue tank inner shell; 17, liquid level gauge; 18, circulating water; 19, water inlet; 20, water inlet pipeline; 21. Constant temperature circulating water tank; 22. Water outlet pipeline; 23. Water outlet; 24. Bearing group; 25. Fixed bracket; 26. Folding plate; 27. Plastic sheeting; 28. Upper dipping roller installation position; 29. ​​Lower dipping roller installation position; 30. Circulation pump; 31. Suction pipe; 32. First temperature sensor; 33. Heating wire; 34. Valve; 35. Second temperature sensor; 36. Air inlet; 37. Baffle; 38. Cooling fan; 39. Partition plate. DETAILED DESCRIPTION

[0016] See also Figures 1 to 6 In an embodiment of the present invention, a temperature-controllable dipping tank with a variable dipping mode includes a tank shell 15 and a tank inner shell 16. A hollow structure is formed between the tank shell 15 and the tank inner shell 16, and circulating water 18 is filled in the hollow structure. A liquid level gauge 17 for detecting the liquid level of the circulating water 18 is embedded in the lower part of the inner side of the tank inner shell 16. A water inlet 19 is provided at the lower part of one end of the tank shell 15, and a water outlet 23 is provided at the upper part of the other end of the tank shell 15. One end of the water outlet 23 is connected to a water outlet pipeline 22, and one end of the water inlet 19 is connected to a water inlet pipe 23. Line 20, a constant temperature circulating water tank 21 is installed between the water inlet pipeline 20 and the water outlet pipeline 22, the interior of the glue tank inner shell 16 is filled with resin, and the circulating water 18 in the hollow structure is circulated and provided by the external constant temperature circulating water tank 21. The circulating water whose temperature is controlled in the constant temperature circulating water tank 21 flows through the water inlet pipeline 20, enters the hollow structure from the water inlet 19, and then flows into the water outlet pipeline 22 from the water outlet 23, and then re-enters the constant temperature circulating water tank 21. The circulating water 18 completes heat exchange with the resin filled in the glue tank inner shell 16 during the flow in the hollow structure.

[0017] exist Figure 5In the embodiment, a set of fixed brackets 25 are arranged on one side of the front and rear ends of the inner shell 16 of the glue tank, and a set of bearing groups 24 are arranged on the other side of the front and rear ends of the inner shell 16 of the glue tank. A lower dipping roller installation position 29 for production in the lower dipping method is located between the fixed brackets 25, and an upper dipping roller installation position 28 for production in the upper dipping method is located between the bearing groups 24. When the lower dipping method is used for production, the dipping roller and the dipping roller shaft are installed at the lower dipping roller installation position 29; when the upper dipping method is used for production, The dipping roller and the dipping roller shaft are installed at the upper dipping roller installation position 28; a triangular folding plate 26 is placed inside the glue tank inner shell 16 between the lower dipping roller installation position 29 and the upper dipping roller installation position 28, and the volume of the dipping tank is changed by moving the folding plate 26 left and right inside the glue tank inner shell 16. A plastic sheet 27 is laid in the space isolated by the folding plate 26 and the glue tank inner shell 16. The plastic sheet 27 is used for anti-seepage treatment to prevent resin from leaking from the junction of the glue tank inner shell 16 and the folding plate 26.

[0018] In the prior art group, such as Figures 1 to 4 As shown, the dipping tank using the bottom dipping method or the top dipping method includes a first glue tank outer shell 5 and a first glue tank inner shell 6. There is a hollow layer between the first glue tank outer shell 5 and the first glue tank inner shell 6, and interlayer water 8 is contained in the hollow structure. A heating rod 10 for heating the interlayer water 8 is installed in the hollow layer. A first liquid level gauge 7 for detecting the liquid level of the interlayer water 8 is embedded in the inner side of the first glue tank inner shell 6. The first liquid level gauge 7 prevents the interlayer water 8 from drying out due to a low liquid level. The first glue tank inner shell 6 contains winding resin 9; Among them, Figure 1 and Figure 2 As shown, in the following dipping method: a group of first fixed brackets 13 are installed in the middle of the upper end of the first glue tank inner shell 6, a dipping roller shaft 12 is installed between the group of first fixed brackets 13, a dipping roller 11 is installed on the dipping roller shaft 12, and an entry roller 3 and an exit roller 4 are installed at the left and right ends of the dipping roller 11 respectively. The dry fiber bundle 1 passes through the upper roller surface of the entry roller 3 and then enters downward into the resin 9 in the first glue tank inner shell 6, and then passes through the lower roller surface of the dipping roller 11 immersed in the resin 9 and then comes out, and passes through the upper roller surface of the exit roller 4 to form a dipping fiber bundle 2, thereby achieving the purpose of dipping. ; In the bottom dipping method, the dry fiber bundle 1 is fully impregnated, but the amount of glue on the fiber bundle 2 is large after dipping; the bottom dipping method is suitable for winding molded products with faster winding speed and thinner wall thickness; the dry fiber bundle 1 enters the resin 9 of the inner shell 6 of the first glue tank as a whole, and comes out of the resin 9 after passing through the lower surface of the dipping roller 11. After dipping, the fiber bundle 2 is dipped in glue as a whole. After dipping, the fiber bundle 2 is fully impregnated, but the amount of glue on the fiber bundle also increases. However, since the number of winding layers of thin-walled products is relatively small, considering the higher production efficiency corresponding to the faster winding speed, the excess resin waste caused by extrusion is acceptable.

[0019] like Figure 3 and Figure 4 As shown, in the upper dipping method: a group of first bearing groups 14 is installed in the middle of the upper end of the first glue tank inner shell 6, and a dipping roller shaft 12 is installed between the group of first bearing groups 14, and a dipping roller 11 is installed on the dipping roller shaft 12, and an entry roller 3 and an exit roller 4 are respectively installed on the left and right ends of the dipping roller 11. The dry fiber bundle 1 passes through the lower roller surface of the entry roller 3 and then enters the upper roller surface of the dipping roller 11 upward, and then passes through the lower roller surface of the exit roller 4 and enters to form a fiber bundle 2 after dipping; the dipping roller 11 rotates under the drive of the dry fiber bundle 1, and brings the resin 9 to the roller surface of the dipping roller 11, and the resin 9 on the roller surface contacts the dry fiber bundle 1, so as to achieve the purpose of dipping; in the upper dipping method, the dry fiber bundle 1 is not fully wetted, but the amount of glue on the fiber bundle 2 after dipping is small; the upper dipping method is suitable for winding with a relatively fast winding speed. Slow, thick-walled winding products; using the upper dipping method, the contact surface between the dry fiber bundle 1 and the resin 9 is above the dipping roller 11, and the resin above the dipping roller 11 comes from the resin film brought up by the dipping roller 11. The dipping of the dry fiber bundle 1 occurs on the upper surface of the resin film and the lower surface of the dry fiber bundle 1. Due to the limitations of contact time and contact surface, the wetting effect of the lower surface of the dry fiber bundle 1 is much higher than that of the upper surface. However, since the wall thickness of the wound product is relatively thick, more layers are required to be wound. As the winding proceeds, the unwetted fibers on the upper surface of the product during winding are covered by the fully wetted fibers on the lower surface of the fiber bundle 2 after dipping. In addition, due to the squeezing effect of the winding tension of the wound fiber bundle, the fibers of the entire wound product can be fully wetted, and the excess extruded resin will be wasted by scraping glue and dripping by itself.

[0020] exist Figure 6In the embodiment, a partition plate 39 is vertically arranged inside the constant temperature circulating water tank 21 to divide the constant temperature circulating water tank 21 into two independent left and right cavities, wherein a first temperature sensor 32 is arranged at the lower end of the inner side wall of the left cavity, and the temperature of the circulating water in the left cavity can be monitored by the first temperature sensor 32, and a second temperature sensor 35 is arranged at the lower end of the inner side wall of the right cavity, and the temperature of the circulating water in the right cavity can be monitored by the second temperature sensor 35, a circulating pump 30 is installed at the upper part of the left cavity, and the input end of the circulating pump 30 is connected to a water pumping pipe 31, and the water pumping pipe 31 extends into the lower part of the left cavity, and a heating wire 33 is installed at the lower position of the left cavity, and the circulating water in the left cavity can be heated by the heating wire 33, and the output end of the circulating pump 30 is connected to the water inlet pipeline 20, and the right cavity One side of the body is connected to the water outlet pipe 22, so that the circulating water returned from the water outlet pipe 22 enters the right cavity, and the circulating water in the left cavity can be pumped into the water inlet pipe 20 through the circulating pump 30. A cooling fan 38 is embedded in the upper end of the right cavity, and an air inlet 36 is opened at the upper part of one end of the right cavity. A baffle 37 is arranged between the air inlet 36 and the cooling fan 38 in the interior of the right cavity, and a valve 34 is installed on the inner side of the partition plate 39. After the cooling fan 38 is turned on, the external air enters the interior of the right cavity from the air inlet 36, changes direction after passing through the baffle 37, and takes away the temperature of the circulating water in the right cavity. The hot air is discharged from the cooling fan 38 again, thereby cooling the circulating water in the right cavity. After opening the valve 34 again, the cooled water can flow into the left cavity.

[0021] Working principle of the present invention: when the bottom dipping method is adopted for production, first, the dipping roller shaft 12 and the dipping roller 11 are installed at the bottom dipping roller installation position 29, and resin is poured into the plastic cloth 27 between the folding plate 26 and the inner shell 16 of the glue tank, and then the heating wire 33 is turned on to heat the circulating water in the left cavity of the constant temperature circulating water tank 21 through the heating wire 33, and the temperature of the circulating water is monitored by the first temperature sensor 32; When the temperature of the circulating water reaches the set requirement, the circulating pump 30 is turned on, and the circulating water in the left cavity is pumped into the water inlet pipeline 20 through the circulating pump 30, and then enters the hollow structure between the glue tank outer shell 15 and the glue tank inner shell 16 from the water inlet 19. After the heat in the circulating water passes through the glue tank inner shell 16, the resin in the plastic sheet 27 is heated, and then the dry fiber bundle 1 passes through the lower roller surface of the dipping roller 11 installed at the lower dipping roller installation position 29, so that the dry fiber bundle 1 can be dipped in glue; During the dipping process, the circulating water in the hollow structure between the outer shell 15 of the glue tank and the inner shell 16 of the glue tank flows into the water outlet pipeline 22 from the water outlet 23, and then re-enters the right cavity in the constant temperature circulating water tank 21, and the temperature of the circulating water is monitored by the second temperature sensor 35; when the temperature is low, the valve 34 is opened, and the circulating water in the right cavity enters the left cavity from the valve 34, and the circulating water entering the left cavity is heated again by the heating wire 33, so that the circulating water entering the hollow structure is in a constant temperature state; When the temperature exceeds the set temperature, the valve 34 is closed and the cooling fan 38 is turned on. After the cooling fan 38 draws the external air from the air inlet 36 into the right cavity, the air changes direction after passing through the baffle 37, takes away the temperature of the circulating water in the right cavity, and is discharged from the cooling fan 38 again, thereby cooling the circulating water in the right cavity. When the second temperature sensor 35 detects that the circulating water has reached the set temperature, the valve 34 is opened again, so that the cooled water can flow into the left cavity, thereby keeping the temperature constant. When the upper dipping method is used for production, first, the dipping roller shaft 12 and the dipping roller 11 are installed at the upper dipping roller installation position 28, and the dry fiber bundle 1 passes through the upper roller surface of the dipping roller 11. The remaining operating steps are the same as those when the lower dipping method is used for production.

[0022] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A temperature-controllable dipping tank with a variable dipping mode, comprising a tank outer shell (15) and a tank inner shell (16), characterized in that: A hollow structure is formed between the outer shell (15) and the inner shell (16) of the rubber tank, and circulating water (18) is filled in the hollow structure. A liquid level gauge (17) for detecting the liquid level of the circulating water (18) is embedded in the lower part of the inner side of the inner shell (16). A water inlet (19) is provided at the lower part of one end of the outer shell (15), and a water outlet (23) is provided at the upper part of the other end of the outer shell (15). One end of the water outlet (23) is connected to a water outlet pipeline (22), and one end of the water inlet (19) is connected to a water inlet pipeline (20). A constant temperature circulating water tank (21) is installed between the water inlet pipeline (20) and the water outlet pipeline (22).

2. A temperature-controllable dipping tank with variable dipping mode according to claim 1, characterized in that: A group of fixed brackets (25) are provided on one side of the front and rear ends of the inner shell (16) of the rubber groove, and a group of bearing groups (24) are provided on the other side of the front and rear ends of the inner shell (16) of the rubber groove. A lower dipping roller installation position (29) for production in the lower dipping method is located between the group of fixed brackets (25), and an upper dipping roller installation position (28) for production in the upper dipping method is located between the group of bearing groups (24).

3. The temperature-controllable dipping tank with variable dipping mode according to claim 1, characterized in that: A triangular folding plate (26) is placed inside the glue tank inner shell (16) between the lower glue dipping roller installation position (29) and the upper glue dipping roller installation position (28).

4. A temperature-controllable dipping tank with variable dipping mode according to claim 3, characterized in that: A plastic sheet (27) is laid in the space separated by the folding plate (26) and the glue groove inner shell (16).

5. The temperature-controllable and variable dipping mode dipping tank according to claim 1, characterized in that: A partition plate (39) is arranged in the vertical direction inside the constant temperature circulating water tank (21) to divide the constant temperature circulating water tank (21) into two independent left and right cavities, wherein a first temperature sensor (32) is arranged at the lower end of the inner side wall of the left cavity, and a second temperature sensor (35) is arranged at the lower end of the inner side wall of the right cavity.

6. The temperature-controllable and variable dipping mode dipping tank according to claim 5, characterized in that: A circulation pump (30) is installed at the upper part of the left cavity, and an input end of the circulation pump (30) is connected to a water pumping pipe (31). The water pumping pipe (31) extends into the lower part of the left cavity, and a heating wire (33) is installed at the lower position of the left cavity.

7. The temperature-controllable and variable dipping mode dipping tank according to claim 6, characterized in that: The output end of the circulation pump (30) is connected to the water inlet pipeline (20), and one side of the right cavity is connected to the water outlet pipeline (22).

8. The temperature-controllable dipping tank with variable dipping mode according to claim 5, characterized in that: A heat dissipation fan (38) is embedded in the upper end of the right cavity, and an air inlet (36) is provided at the upper portion of one end of the right cavity. A baffle (37) is provided inside the right cavity between the air inlet (36) and the heat dissipation fan (38), and a valve (34) is installed on the inner side of the partition plate (39).

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