Viscosity control device for polyurethane pultrusion

Abstract

The utility model discloses a viscosity control device for polyurethane pultrusion, which comprises a shell and an additive box, a communication port is arranged on the side surface of the shell in a penetrating manner, the additive box is fixedly mounted on the upper surface of the shell, the upper surface of the shell is connected with a feeding structure, and the feeding structure is connected with the shell. And the feeding structure can be pressed downwards through a pressure plate so that an additive in the additive box can be added into the shell to adjust the viscosity, the feeding structure comprises a supporting plate, the supporting plate is fixedly installed on the upper surface of the shell, and the side surface of the supporting plate is attached to the side surface of the additive box. According to the viscosity control device for polyurethane pultrusion, the feeding structure is arranged, a pressure plate is pressed downwards through a pressing rod, so that the pressure of an additive box is increased, a negative pressure valve is opened to add an additive into the shell, the heating structure is further arranged, and a stirring frame rotates to drive a heat conduction block to rapidly and evenly transfer heat of a heating rod; the temperature of the polyurethane material is raised, and the viscosity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane pultrusion molding, in particular to a viscosity control device for polyurethane pultrusion molding. Background Technique

[0002] The polyurethane pultrusion molding technology is a composite material molding technology that prepares polyurethane resin and reinforcing materials through the pultrusion molding process. This technology has the advantages of high production efficiency, stable product quality, low cost, etc., so it has been widely used in various fields. The basic principle of the polyurethane pultrusion molding technology is that after mixing polyurethane resin and reinforcing materials, the mixture is injected into a mold by injection or extrusion, and then cured by heating. During the molding process, a chemical reaction occurs between the reinforcing material and the polyurethane resin to form a stable composite material.

[0003] Before injecting the polyurethane mixture into the mold, the viscosity of the material needs to be controlled. The viscosity of the polyurethane mixture is affected by the external temperature and the ratio of its own additives, resulting in different viscosities. The viscosity of the polyurethane mixture will affect the molding effect, so the viscosity needs to be adjusted before injecting into the mold. Content of the Utility Model

[0004] The purpose of the utility model is to provide a viscosity control device for polyurethane pultrusion molding to solve the problem that the viscosity of the polyurethane mixture affects the molding effect proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A viscosity control device for polyurethane pultrusion molding, including a housing, a communication port is penetrated through the side surface of the housing, and an additive tank is further included. The additive tank is fixedly installed on the upper surface of the housing. A feeding structure is connected to the upper surface of the housing. The feeding structure can make the additive in the additive tank be added into the housing through the pressure of the pressure plate to adjust the viscosity.

[0006] Preferably, the feeding structure includes a support plate fixedly installed on the upper surface of the housing. The side surface of the support plate is attached to the side surface of the additive tank. A cylinder is fixedly installed on the upper surface of the support plate. The lower end of the piston rod of the cylinder is fixedly connected to a pressure rod. The pressure rod slides through the upper surface of the additive tank. A pressure plate is slidably attached to the inner wall surface of the additive tank. The upper end of the pressure plate is fixedly connected to the lower end of the pressure rod. The lower surface of the additive tank is connected to the upper surface of the housing through a negative pressure valve. A feeding port is arranged on the front surface of the additive tank.

[0007] Adopting the above technical scheme, the pressure plate is used to extrude the additive through the pressure rod, so that the additive is added into the housing through the negative pressure valve.

[0008] Preferably, the support plate is arranged in a 7-shaped structure.

[0009] Adopting the above technical solution facilitates the installation of the cylinder.

[0010] Preferably, a heating structure is arranged inside the housing. The heating structure can heat through a heating rod and conduct heat through a heat conduction block, and cooperate with a stirring frame to stir, so that the heat is quickly and evenly transferred.

[0011] Adopting the above technical solution, the heat is quickly spread through the stirring frame.

[0012] Preferably, the heating structure includes a motor. The motor is fixedly installed on the upper surface of the housing, and the lower end of the rotating shaft of the motor is fixedly connected with a rotating column. The lower end of the rotating column is rotatably installed on the bottom surface of the inner wall of the housing. A stirring frame is fixedly arranged on the outer surface of the rotating column. The rotating column is arranged in a hollow structure, and a heating rod is installed in the hollow interior of the rotating column. The lower end of the heating rod is fixedly connected to the bottom surface of the inner wall of the housing, and a heat conduction block is in contact and rotation connection with the outer surface of the heating rod.

[0013] Adopting the above technical solution, the rotating column transfers the heat of the heat conduction block while the stirring frame stirs.

[0014] Preferably, heating wires are arranged in the inner wall sandwich of the housing.

[0015] Adopting the above technical solution, the temperature rise is accelerated.

[0016] Preferably, the heat conduction block is installed through the inside of the stirring frame.

[0017] Adopting the above technical solution, the stirring frame can drive the heat conduction block to rotate simultaneously.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: The viscosity control device for polyurethane pultrusion molding:

[0019] 1. The viscosity control device for polyurethane pultrusion molding is provided with a feeding structure. When the viscosity of the polyurethane material is low, the cylinder is opened, so that the cylinder presses the pressure plate downward through the pressure rod, and the pressure plate extrudes the additive in the additive tank. When the pulling force increases, the negative pressure valve will be opened, and the additive will enter the housing through the negative pressure valve;

[0020] 2. Further, a heating structure is also provided. When the motor installed on the upper surface of the housing is turned on, the rotating column will rotate. A stirring frame is fixedly installed on the outer surface of the rotating column, so the stirring frame will be driven to rotate, making the polyurethane material and the additive mix and the viscosity increase;

[0021] 3. Further, when the viscosity of the polyurethane material becomes too high due to temperature reduction, the heating rod and the heating wire will be turned on for heating, and then in cooperation with the rotation of the stirring frame, the stirring frame drives the heat conduction block to rotate, enabling the heat to be quickly transferred during the comparison process and reducing the viscosity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the axonometric surface structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the front sectional structure of the additive tank of the present utility model;

[0024] Figure 3 is a schematic diagram of the side sectional structure of the outer shell of the present utility model;

[0025] Figure 4 is a schematic diagram of the side sectional structure of the rotating column of the present utility model.

[0026] In the figure: 1. Outer shell; 2. Communication port; 3. Additive tank; 4. Feeding port; 5. Support plate; 6. Cylinder; 7. Pressure rod; 8. Pressure plate; 9. Negative pressure valve; 10. Motor; 11. Rotating column; 12. Stirring frame; 13. Heating wire; 14. Heating rod; 15. Heat conduction block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-4 , the present utility model provides a technical solution: a viscosity control device for polyurethane pultrusion molding, including an outer shell 1, a communication port 2, an additive tank 3, a feeding port 4, a support plate 5, a cylinder 6, a pressure rod 7, a pressure plate 8, a negative pressure valve 9, a motor 10, a rotating column 11, a stirring frame 12, a heating wire 13, a heating rod 14, and a heat conduction block 15.

[0029] Embodiment 1

[0030] The viscosity control device for polyurethane pultrusion molding is provided with a feeding structure, and the addition of the additive into the inner part of the outer shell 1 can be controlled through the pressure rod 7. Specifically:

[0031] The side surface of the outer shell 1 is provided with a communication port 2 in a penetrating manner. It further includes an additive tank 3, and the additive tank 3 is fixedly installed on the upper surface of the outer shell 1. A feeding structure is connected to the upper surface of the outer shell 1. The feeding structure can make the additive in the additive tank 3 be added into the outer shell 1 to adjust the viscosity through the downward pressing of the pressure plate 8. The feeding structure includes a support plate 5, and the support plate 5 is fixedly installed on the upper surface of the outer shell 1. The side surface of the support plate 5 is attached to the side surface of the additive tank 3. A cylinder 6 is fixedly installed on the upper surface of the support plate 5. The lower end of the piston rod of the cylinder 6 is fixedly connected to a pressure rod 7. The pressure rod 7 slidably penetrates through the upper surface of the additive tank 3. A pressure plate 8 is slidably attached to the inner wall surface of the additive tank 3. The upper end of the pressure plate 8 is fixedly connected to the lower end of the pressure rod 7. The lower surface of the additive tank 3 is connected to the upper surface of the outer shell 1 in a penetrating manner through a negative pressure valve 9. A feeding port 4 is arranged on the front surface of the additive tank 3. The support plate 5 is arranged in a 7-shaped structure;

[0032] When the viscosity control device for polyurethane pultrusion molding is in use, as Figure 1 shown, first, the polyurethane material will enter the interior of the outer shell 1 through the communication port 2 on the side surface of the outer shell 1, and then be discharged through the communication port 2 on the other side of the outer shell 1 into the mold after the viscosity is adjusted. After the polyurethane material enters the interior and when the viscosity is relatively low, additives need to be added for mixing. At this time, the cylinder 6 on the upper surface of the support plate 5 will be activated. Since the piston rod of the cylinder 6 is fixedly connected to the pressure rod 7, the pressure rod 7 will be pressed downward, as Figure 2 shown. The lower end of the pressure rod 7 slidably penetrates through the upper surface of the additive tank 3 and is fixedly connected to the pressure plate 8. Therefore, the pressure plate 8 will be pressed downward, causing the additives inside the additive tank 3 to be under pressure. The increase in pressure will cause the negative pressure valve 9 connecting the lower surface of the additive tank 3 to the upper surface of the outer shell 1 to open, enabling the additives to enter the outer shell 1 through the negative pressure valve 9 and mix with the polyurethane material. Then the cylinder 6 is closed, which will cause the pressure to decrease and the negative pressure valve 9 to close. When the additives inside the additive tank 3 need to be added, feeding can be carried out through the feeding port 4 on the front surface of the additive tank 3.

[0033] Embodiment 2

[0034] The viscosity control device for polyurethane pultrusion molding is further provided with a heating structure, which can quickly conduct the heat of the heating rod 14 through the rotation of the heat conduction block 15 driven by the stirring frame 12. Specifically:

[0035] Inside the housing 1, a heating structure is provided. The heating structure can heat through the heating rod 14 and conduct heat through the heat conduction block 15 to cooperate with the stirring frame 12 for stirring, so that the heat is quickly and evenly transferred. The heating structure includes a motor 10, which is fixedly installed on the upper surface of the housing 1. The lower end of the rotating shaft of the motor 10 is fixedly connected with a rotating column 11. The lower end of the rotating column 11 is rotatably installed on the bottom surface of the inner wall of the housing 1. A stirring frame 12 is fixedly arranged on the outer surface of the rotating column 11. The rotating column 11 is arranged as a hollow structure, and a heating rod 14 is installed in the hollow interior of the rotating column 11. The lower end of the heating rod 14 is fixedly connected to the bottom surface of the inner wall of the housing 1. A heat conduction block 15 is in contact and rotational connection with the outer surface of the heating rod 14. An electric heating wire 13 is arranged in the inner wall sandwich of the housing 1. The heat conduction block 15 is installed through the interior of the stirring frame 12.

[0036] When the additive enters the housing 1 through the negative pressure valve 9 and is mixed with the polyurethane material, the motor 10 on the upper surface of the housing 1 will be turned on. As Figure 3 shown, the motor 10 will drive the rotating column 11 to rotate. Since the rotating column 11 is rotatably installed on the bottom surface of the inner wall of the housing 1 and the rotating column 11 is a hollow structure, the rotation of the rotating column 11 will not affect the internal heating rod 14. A stirring frame 12 is fixedly installed on the outer surface of the rotating column 11. The stirring frame 12 is driven by the rotating column 11 to rotate and stir the materials, so that the additive is mixed with the polyurethane material and the viscosity increases.

[0037] Furthermore, when the viscosity of the polyurethane material is too high due to the external temperature, the electric heating wire 13 and the heating rod 14 will be turned on for heating. At the same time, a heat conduction block 15 is in contact and rotational connection with the outer surface of the heating rod 14, and the heat conduction block 15 is installed through the interior of the stirring frame 12. Therefore, the heat conduction block 15 will be driven to rotate by the stirring frame 12. The heat conduction block 15 conducts the heat of the heating rod 14 and is in full contact with the stirred materials, so that the temperature of the materials rises more evenly, the temperature increase is accelerated, and the viscosity control is reduced. When the viscosity of the polyurethane material is adjusted to an appropriate level, it is discharged through the communication port 2 and injected into the mold.

[0038] Working principle: When using this viscosity control device for polyurethane pultrusion molding, a feeding structure is provided, which can increase the pressure in the additive tank 3 by pressing down the pressure plate 8 to open the negative pressure valve 9. A heating structure is also provided, which can quickly and evenly transfer the heat of the heating rod 14 through the stirring frame 12 driving the heat conduction block 15, increasing the overall practicality.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A viscosity control device for polyurethane pultrusion, comprising a housing (1), and a communication port (2) is provided through the side surface of the housing (1), characterized in that: It further includes an additive tank (3), the additive tank (3) is fixedly installed on the upper surface of the outer shell (1), a feeding structure is connected to the upper surface of the outer shell (1), and the feeding structure can add the additive in the additive tank (3) into the outer shell (1) to adjust the viscosity by pressing down the pressure plate (8).

2. The viscosity control device for polyurethane pultrusion according to claim 1, characterized in that: The feeding structure includes a support plate (5), the support plate (5) is fixedly installed on the upper surface of the outer shell (1), the side surface of the support plate (5) is attached to the side surface of the additive tank (3), a cylinder (6) is fixedly installed on the upper surface of the support plate (5), the lower end of the piston rod of the cylinder (6) is fixedly connected to a pressure rod (7), the pressure rod (7) slides through the upper surface of the additive tank (3), a pressure plate (8) is slidably attached to the inner wall surface of the additive tank (3), the upper end of the pressure plate (8) is fixedly connected to the lower end of the pressure rod (7), the lower surface of the additive tank (3) is connected to the upper surface of the outer shell (1) through a negative pressure valve (9), and a feeding port (4) is arranged on the front surface of the additive tank (3).

3. The viscosity control device for polyurethane pultrusion according to claim 2, characterized in that: The support plate (5) is arranged in a 7-shaped structure.

4. A viscosity control device for polyurethane pultrusion, characterized in that: A heating structure is arranged inside the outer shell (1), and the heating structure can heat through a heating rod (14) and conduct heat through a heat conduction block (15) to cooperate with a stirring frame (12) for stirring so that the heat is quickly and evenly transferred.

5. A viscosity control device for polyurethane pultrusion, according to claim 4, characterized in that: The heating structure includes a motor (10), the motor (10) is fixedly installed on the upper surface of the outer shell (1), and the lower end of the rotating shaft of the motor (10) is fixedly connected to a rotating column (11), the lower end of the rotating column (11) is rotatably installed on the bottom surface of the inner wall of the outer shell (1), a stirring frame (12) is fixedly arranged on the outer surface of the rotating column (11), the rotating column (11) is arranged in a hollow structure, and a heating rod (14) is installed in the hollow interior of the rotating column (11), the lower end of the heating rod (14) is fixedly connected to the bottom surface of the inner wall of the outer shell (1), and a heat conduction block (15) is in contact and rotation connection with the outer surface of the heating rod (14).

6. The viscosity control device for polyurethane pultrusion according to claim 5, characterized in that: An electric heating wire (13) is arranged in the inner wall sandwich of the outer shell (1).

7. A viscosity control device for polyurethane pultrusion, according to claim 5, characterized in that: The heat conduction block (15) is installed through the inside of the stirring frame (12).

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