SMC sheet resin paste stirring device

Abstract

The utility model discloses an SMC (Sheet Molding Compound) sheet resin paste stirring device. The SMC sheet resin paste stirring device comprises a horizontal stirrer and a wall scraping stirrer, the horizontal stirrer and the wall scraping stirrer are fixed by adopting the same central shaft; the horizontal stirrer adopts a spiral blade paddle type structural design and comprises a half hoop at the end part and a propeller blade, and a reverse spiral sheet is fixed on the propeller blade; the spiral extrusion directions of the spiral blades and the reverse spiral sheets are opposite; when the equipment runs, the pasty materials in the middle of the tank body can be pressed downwards, and the pasty materials on the two sides can be turned upwards, so that the aim of stirring is fulfilled; at least two groups of horizontal stirrers are arranged, and the two groups of horizontal stirrers are arranged up and down and are crossed at an angle of 90 degrees, so that materials in the tank body can be fully stirred; as the materials are easy to deposit at the bottom of the tank body, the wall scraping stirrer is arranged at the bottommost part, so that the materials can be effectively prevented from depositing on the side wall below the tank body, and the horizontal stirrer is matched to perform middle backflow stirring on edge materials.

Description

Technical Field

[0001] This SMC sheet resin paste stirring device relates to the technical field of composite material production, and particularly relates to an SMC sheet resin paste stirring device. Background Art

[0002] SMC material, namely sheet molding compound, is a composite material composed of resin, filler and reinforcing fiber.

[0003] During the production process of SMC sheets, a stirring kettle is required to first pre-stir unsaturated resin, low shrinkage resin, filler, curing agent, mold release agent, etc. into resin paste. The resin paste is mixed with magnesium oxide paste and color paste in a mixer to form a mixed paste, and then subsequent production is carried out. Since the viscosity of the special resin for SMC sheets is relatively high, the uniformity and stability of mixing with various products have a great impact on the performance of SMC sheet products. Therefore, the mixing and stirring of SMC materials is a key link in sheet production.

[0004] The traditional SMC material stirring kettle adopts the method of a high-speed disperser. The stirrer of the disperser is a radial flow stirrer. This method has a long stirring time, and at the same time, a large amount of material will stick to the side wall of the stirring kettle both during the mixing process and during discharging, resulting in the accumulation of material in the tank, and ultimately leading to a reduction in the stirring efficiency in the tank and affecting the discharging effect.

[0005] As a production unit of SMC materials, the current technical problem that needs to be solved urgently is how to design an SMC sheet resin paste stirring device that can combine the radial stirring and axial stirring of materials during material stirring, promote the flow of materials in multiple directions, not only improve the stirring effect, but also avoid the accumulation of materials on the inner wall of the tank. Summary of the Utility Model

[0006] To overcome the deficiencies of the prior art, the present utility model provides an SMC sheet resin paste stirring device. By setting a supporting stirrer, this stirrer includes a horizontally arranged stirring rod and a vertically arranged stirring rod, and the two cooperate with each other during operation to disturb the SMC material to achieve axial and radial flow during mixing and stirring, preventing it from coagulating.

[0007] The technical solution adopted by this SMC sheet resin paste stirring device to solve its technical problems is:

[0008] An SMC sheet resin paste stirring device, which includes a horizontal stirrer and a scraping wall stirrer; the horizontal stirrer and the scraping wall stirrer are fixed with the same central axis;

[0009] The described horizontal stirrer adopts a spiral blade structure design, which includes a semi-hoop at the end and a propeller blade. A forward blade and a reverse spiral are fixed on the propeller blade; the spiral extrusion directions of the forward blade and the reverse spiral are opposite;

[0010] At least two groups of the described horizontal stirrers are provided, and the two groups of horizontal stirrers are arranged up and down and cross at a 90-degree angle.

[0011] The scraping wall stirrer is located at the bottom, and the scraping wall stirrer crosses the lowermost horizontal stirrer at a 90-degree angle.

[0012] The described scraping wall stirrer is arranged in a U-shaped structure, which includes a transverse rod. A bending part is arranged on the transverse rod, and a vertical rod is arranged at the end of the bending part. A vertical scraping plate is fixed on the vertical rod.

[0013] The top of the described vertical scraping plate is set at the same level as the highest point of the horizontal stirrer.

[0014] A through groove is arranged on the propeller blade, and the reverse spiral is inserted into the through groove and welded to the propeller blade at the position of the intersection line.

[0015] The top of the central shaft is connected to an external stirring motor. The external stirring motor is a variable-frequency motor or is equipped with a speed-changing module. The stirring speed is divided into different levels and controlled at 50 - 300 rpm.

[0016] Through the above structural settings, compared with the prior art, the beneficial effects of the present SMC sheet resin paste stirring device are:

[0017] It includes a horizontal stirrer and a scraping wall stirrer; the horizontal stirrer and the scraping wall stirrer are fixed by the same central shaft; the horizontal stirrer adopts a spiral blade structure design, which includes a semi-hoop at the end and a propeller blade. A reverse spiral is fixed on the propeller blade; the spiral extrusion directions of the propeller blade and the reverse spiral are opposite; during the operation of the equipment, the paste-like material in the middle of the tank body can be pressed down, and the paste-like materials on both sides can be turned up, so as to achieve the purpose of stirring; at least two groups of horizontal stirrers are provided, and the two groups of horizontal stirrers are arranged up and down and cross at a 90-degree angle, which can fully stir the materials in the tank body; because the materials are easy to deposit at the bottom of the tank body, the scraping wall stirrer is arranged at the bottom, which can effectively avoid the deposition of materials on the side wall below the tank body and cooperate with the horizontal stirrer to carry out the central reflux stirring of the edge materials. Description of the Drawings

[0018] Figure 1 Schematic three-dimensional structure of the horizontal stirrer Figure Ⅰ ;

[0019] Figure 2 Schematic three-dimensional structure of the horizontal stirrerFigure Ⅱ ;

[0020] Figure 3 It is a schematic top - view installation structure diagram of a horizontal stirrer;

[0021] Figure 4 It is a schematic side - view installation structure diagram of a wall - scraping stirrer;

[0022] Figure 5 It is a schematic diagram of the operating state of the present utility model;

[0023] In the drawings, 1 is a horizontal stirrer, 10 is a propeller blade, 2 is a semi - hoop, 21 is a locking surface, 3 is a vertical scraper, 4 is a reverse helical blade, 5 is a forward blade, 6 is a wall - scraping stirrer, 61 is a wall - scraping hoop, 62 is a cross - bar, 63 is a bending part, 64 is a vertical bar, 65 is a fixing hole, 7 is a tank body, 71 is an external stirring motor, 72 is a speed - change module, 73 is a fixing seat, 74 is a coupling, 75 is a central shaft, and 76 is a central support seat. Specific embodiments

[0024] The following provides a detailed description of the SMC sheet resin paste stirring device of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the SMC sheet resin paste stirring device from the content disclosed in this specification; however, it should be noted that the following specific embodiments do not technically limit the technical solution. Under the guidance of the following technical solution, those skilled in the art can further extend the technology. The protection scope of the SMC sheet resin paste stirring device is subject to the claims.

[0025] Embodiment: As Figure 5 shown, a SMC sheet resin paste stirring device includes a horizontal stirrer 1 and a wall - scraping stirrer 6; the horizontal stirrer 1 and the wall - scraping stirrer 6 are fixed using the same central shaft 75.

[0026] As Figure 1 , 2 , and as shown in Figure 3, the horizontal stirrer 1 is designed with a spiral - blade type structure. It includes a semi - hoop 2 at the end and a propeller blade 1. A forward blade 5 and a reverse helical blade 4 are fixed on the propeller blade 1; the spiral extrusion directions of the forward blade 5 and the reverse helical blade 4 are opposite, and the forward blade 5 is horizontally arranged relative to the propeller blade 1. It can be understood that the forward blade 5 is the protruding area in front of and behind the propeller blade 1.

[0027] The horizontal stirrer 1 can be designed in various forms. As Figure 1 shown, the reverse helical blade 4 is arranged inside the forward blade 5; this design can guide the material at the center upward and press the material on both sides downward. As Figure 2As shown, the reverse spiral blade 4 is arranged outside the forward blade 5; this design can divert the materials near the inner wall of the tank at the outer edge upward and press the materials in the central area downward.

[0028] In this embodiment, the layout structure as shown in Figure 5 is adopted. The reverse spiral blade 4 is arranged outside the forward blade 5. Every two horizontal agitators 1 are butt-joint installed, and are locked and fixed on the central shaft 75 through the locking surface 21 on the semi-hoop 2. In this embodiment, the horizontal agitators 1 are arranged in two groups up and down. The two groups of horizontal agitators 1 are arranged up and down and cross at an angle of 90 degrees. This installation structure is as shown in Figure 3 .

[0029] In this embodiment, the scraping wall agitator 6 is located at the bottommost part, and the scraping wall agitator 6 crosses the lowermost horizontal agitator 1 at an angle of 90 degrees. Further, the scraping wall agitator 6 is arranged in a U-shaped structure, as shown in Figure 4 . It includes a transverse rod 62 and a scraping wall hoop 61 fixed on the transverse rod 62, and the scraping wall agitator 6 is locked and fixed on the central shaft 75 by means of the scraping wall hoop 61.

[0030] A bending part 63 is arranged on the transverse rod 62, a vertical rod 64 is arranged at the end of the bending part 63, and a fixing hole 65 is arranged on the vertical rod 64. The vertical scraping plate 6 is fixed through the fixing hole 65. When installing the vertical scraping plate 6 in this utility model, it should be noted that the topmost part of the vertical scraping plate 6 is set to be flush with the highest point of the reverse spiral blade 4 at the outermost end of the horizontal agitator 1.

[0031] When the reverse spiral blade 4 is horizontally fixed to the propeller blade 1, to ensure the fixing strength, its fixing structure is described as follows. Through grooves are arranged on the propeller blade 1, and the reverse spiral blade 4 is inserted into the through grooves and welded to the propeller blade 1 at the position of the intersection line. This structure makes the propeller blade 1 and the reverse spiral blade 4 form a whole, effectively improving the combined strength of the two.

[0032] When this utility model is in use, as shown in Figure 5 , a central support seat 76 is arranged at the inner bottom end of the tank body 7, and the central shaft 75 is fixed through the central support seat 76 and the coupling 74. A fixing seat 73 is arranged at the top of the tank body 7. The coupling 74 passes through the fixing seat 73 and is connected to the speed change module 72, and the speed change module 72 is connected to the external stirring motor 71 at the top. After the external stirring motor 71 is connected to the speed change module 72, its stirring speed can be divided into two modes: high speed and low speed. The rotation speed in the high-speed mode is 200 - 300 rpm, and the rotation speed in the low-speed mode is 50 - 100 rpm.

[0033] Further, the above method of controlling the speed can also be achieved by changing the external stirring motor 71 into a variable-frequency motor or a servo motor.

[0034] In summary, when the SMC sheet resin paste stirring device is operating, it can promote the downward pressure of the middle material in the tank body 7 and the upward turning of the materials on both sides, so as to achieve the purpose of stirring; at least two sets of horizontal stirrers 1 are arranged, and the two sets of horizontal stirrers are arranged up and down and cross at an angle of 90 degrees, which can fully stir the materials in the tank body 7; because the materials are easy to deposit at the bottom of the tank body, the scraping wall stirrer 6 is arranged at the bottom, which can effectively prevent the materials from depositing on the side wall below the tank body and cooperate with the horizontal stirrer to stir the edge materials back to the middle.

Claims

1. A SMC sheet resin paste stirring device, characterized in that: it comprises a horizontal stirrer and a scraping stirrer; the horizontal stirrer and the scraping stirrer are fixed with the same central axis; The horizontal agitator adopts a spiral blade paddle structure design, which includes a half hoop at the end and a spiral blade, on which a forward blade and a reverse spiral sheet are fixed; the spiral extrusion directions of the forward blade and the reverse spiral sheet are opposite; the horizontal agitator is set in at least two groups, and the two groups of horizontal agitators are arranged up and down and cross at an angle of 90 degrees; the wall scraping agitator is located at the bottom, and the wall scraping agitator crosses with the bottom horizontal agitator at an angle of 90 degrees.

2. The SMC sheet resin paste stirring device according to claim 1, characterized in that: The wall scraping stirrer is arranged in a U-shaped structure, which comprises a transverse rod, a bending portion is arranged on the transverse rod, a vertical rod is arranged at the end of the bending portion, and a vertical scraper is fixed on the vertical rod.

3. The SMC sheet resin paste stirring device according to claim 2, characterized in that: The top of the vertical scraper is arranged to be flush with the highest point of the horizontal agitator.

4. The SMC sheet resin paste stirring device according to claim 1, characterized in that: The propeller blade is provided with a through groove, the reverse spiral piece is inserted into the through groove and is welded to the propeller blade at the intersection line.

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