CN204773094U - Fiber composite material agitating unit - Google Patents

Abstract

The utility model discloses a fiber composite material stirring device, which comprises a base, a support is fixed on the base, a motor is fixed on the right side of the support, a conical storage barrel is fixed on the left side of the support, and a conical storage barrel is fixed on the left side of the support. A stirring rod is arranged on the central axis of the barrel, and a variable-diameter spiral blade is installed on the middle/lower part of the stirring rod. The stirring rod is provided with a main stirring blade and an auxiliary stirring blade, and the main stirring blade and the auxiliary stirring blade are located on the variable-diameter spiral The upper end of the leaf, the upper end of the stirring rod passes through the cover of the storage tank and is connected to the bracket in rotation. The upper end of the stirring rod is equipped with a second transmission wheel, and the first heating element is fixedly connected inside the stirring rod. ring, a second heating element is fixed on the outer wall of the conical storage barrel. The mixture of fiber and matrix polymer is directly conveyed into the subsequent injection molding equipment to complete injection molding after being fully stirred and mixed by the stirring rod, thus eliminating the condensation, granulation, drying and other processes of the original method.

Description

A fiber composite mixing device

technical field

The utility model relates to the technical field of fiber composite material processing devices, in particular to a fiber composite material mixing feeder.

Background technique

The polymer matrix and various additives are melted and blended by the extruder, then extruded by the screw, and then compounded with the fiber, and then enter the subsequent injection molding equipment for injection molding. It is a new type of fiber composite material processing and molding process. Extruder is a kind of equipment commonly used in the processing technology of fiber composite materials. Relevant researchers have made various improvements to it. Chinese patent 200820083445 involves two conical screws rotating in the same direction in the barrel to make the raw materials in the barrel The inner plasticization is more uniform and the shear rate is higher, which greatly improves the plasticizing performance of the extruder; Chinese patent 201020548822.0 mentions a conical single-screw extruder with parallel screw heads, which makes it easier for materials to be extruded smoothly Out; Chinese patent 200820056183.9 provides a conical single-screw extruder, which solves the problems existing in the processing of fluffy material polymers by a single-screw extruder with a constant diameter. To a certain extent, this optimizes the performance of the extruder and improves the work efficiency, but before injecting the fiber-matrix molten polymer into the subsequent injection molding equipment, it is necessary to add the fiber to the matrix polymer for sufficient mixing. Some methods often use processes such as extrusion condensation, granulation, and drying, and each process requires separate equipment to realize. The entire process is long and requires multiple heatings, resulting in a waste of energy.

Contents of the invention

The purpose of the utility model is to provide a fiber composite material stirring device to solve the cumbersome processes of extrusion, condensation, granulation, and drying when adding fibers into the matrix polymer for sufficient mixing in the above process.

The technical scheme that the utility model takes for solving the above problems is:

A fiber composite stirring device, including a base, a bracket is fixed on the base, a motor is fixed on the right side of the bracket, a first transmission wheel is installed on the rotor of the motor, and a conical storage barrel is fixed on the left side of the bracket , the upper end of the conical storage tank is provided with a storage tank cover, the storage tank cover is provided with a feed port, the lower end of the conical storage tank is provided with a straight line discharge port, and the straight line discharge port passes through The base is fixedly connected with the base; a stirring rod is arranged at the central axis of the conical storage barrel, the lower end of the stirring rod is located in the straight discharge port, and the middle/lower part of the stirring rod is equipped with a variable-diameter spiral blade, and the variable-diameter spiral blade The radius of the stirring rod decreases from top to bottom along the axis of the stirring rod. The stirring rod is provided with a main stirring blade and an auxiliary stirring blade. The main stirring blade and the auxiliary stirring blade are located at the upper end of the variable diameter spiral blade. Rectangular, the auxiliary stirring blade is a right-angled trapezoid, the hypotenuse waist of the auxiliary stirring blade is parallel to the wall of the conical storage tank and frictionally contacted; Transmission wheel, the first transmission wheel and the second transmission wheel are connected by a transmission belt, the first heating element is fixedly connected to the stirring rod, and the electrode slip ring is installed on the top of the first heating element, on the outer wall of the conical storage tank A second heating element is fixed.

The main stirring blade is connected to the upper end of the variable-diameter spiral blade, and the horizontal side length of the main stirring blade is equal to the radius of the upper end of the variable-diameter spiral blade.

The main stirring blade and the auxiliary stirring blade are in a plane, and the heights of the main stirring blade and the auxiliary stirring blade on the stirring rod are equal.

The second heating element is ring-shaped, and the second heating element is fixed horizontally on the outer wall of the conical storage cylinder.

The cover of the storage tank is provided with two feeding ports.

The first transmission wheel and the second transmission wheel are connected by chain transmission.

The stirring rod is rotatably connected with the support bearing.

The beneficial effects of the utility model are: since the main stirring blade and the auxiliary stirring blade are installed on the stirring rod, and the variable-diameter spiral blades are continuously installed below the main stirring blade and the auxiliary stirring blade, the conical storage material The fiber and matrix polymer in the cylinder are firstly fully stirred and mixed by the main stirring blade and the auxiliary stirring blade, and then extruded and conveyed by the variable-diameter spiral blade, the fiber matrix polymer is squeezed more firmly, and at the same time discharged The excess gas in the mixture is finally conveyed directly into the subsequent injection molding equipment through the linear outlet to complete injection molding, thus eliminating the condensation, granulation, drying and other processes of the original method.

The utility model also has the following advantages:

(1) Since there are two feed ports on the cover of the conical storage tank, the fiber and matrix polymer can enter from different feed ports and mix in the sealed conical storage tank, which improves the operator's safety. working environment.

(2) The rectangular main stirring blade avoids the phenomenon that the original extruder screw cuts the fiber short, and can maintain the original length of the fiber to the greatest extent, so that the product performance is significantly improved. The trapezoidal auxiliary stirring blade is in frictional contact with the wall of the conical storage tank, which can scrape off the material stuck on the wall of the conical storage tank, and has the function of cleaning the wall of the tank.

(3) According to the difference between the extrusion speed of the fiber matrix polymer and the length of the injection molding cycle, the length of the added fiber or the ratio of the fiber to the matrix polymer can be adjusted. The length can also be adjusted according to the amount of reserve material required to make production more flexible.

(4) The heating element fixed inside the stirring rod and at the wall of the conical storage tank ensures the proper temperature of the fiber and matrix polymer in the storage tank, avoiding the cooling of the polymer in the storage tank due to the low temperature The phenomenon of solidification or increased viscosity eliminates the need for more complicated processes such as extrusion condensation, granulation, and drying in the subsequent injection molding steps.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the utility model includes a base 1, on which a support 2 is fixed, the support 2 is composed of a horizontal section and a vertical section, the horizontal section is to the left, and a deceleration is fixed on the right side of the support 2 The motor 3 and the reduction motor 3 can rotate forward or reverse, and the first drive sprocket 4 is installed on the rotor of the reduction motor 3 . On the left side of the support 2, a conical storage tank 10 is fixed, the upper end of the conical storage tank 10 is a detachable storage tank cover 9, and the storage tank cover 9 is provided with two feeding ports, the conical The lower end of the material storage barrel 10 is a linear discharge port 16, which passes through the base 1 and is fixedly connected thereto. A stirring rod 11 is arranged at the central axis of the conical storage barrel 10, the lower end of the stirring rod 11 is located in the linear outlet 16, and the lower half of the stirring rod 11 is provided with a variable-diameter spiral blade 14, and the variable-diameter spiral blade The radius of 14 decreases successively from top to bottom along the stirring rod 11, and a main stirring blade 12 and an auxiliary stirring blade 13 are arranged on the upper end of the spiral blade 14, the main stirring blade 12 is rectangular, and the auxiliary stirring blade 13 is a right-angled trapezoid, The hypotenuse waist of the auxiliary stirring blade 13 is parallel to and in frictional contact with the wall of the conical storage tank 10 . The stirring rod 11 is connected with the left end of the horizontal section of the support 2 after passing through the storage tank cover 9, the second sprocket 8 is installed on the upper end of the stirring rod 11, the first sprocket 4 and the second sprocket 8 are connected by a chain 5, and the stirring rod 11, a first heating element 7 is fixed inside, and an electrode slip ring is installed on the upper end of the first heating element 7, and a ring-shaped second heating element 15 is fixed on the outer wall of the conical storage cylinder 10, and its horizontal circle is fixed on the On the outer wall of the conical storage tank 10.

The working process of the utility model is: open the switch of the reduction motor 3, the first sprocket 4 drives the second sprocket 8 to rotate through the chain 5, so that the stirring rod 11 starts to rotate, and the stirring rod 11 will drive the main stirring blade 12 and the auxiliary The stirring blades 13 rotate together, and the hypotenuse waist of the auxiliary stirring blades 13 frictionally slides with the wall of the conical storage tank 10 to scrape off the residue on the inner wall, and then the required fibers and matrix polymer are respectively drawn from the storage tank cover 9 The two feeding ports are sent into the conical storage tank 10, the fiber and the matrix polymer are first fully stirred and mixed by the main stirring blade 12 and the auxiliary stirring blade 13, and then squeezed and conveyed by the variable-diameter spiral blade 14, The fiber-matrix polymer is extruded more strongly, and the excess gas in the mixture is discharged at the same time. The gas is discharged through the two inlets of the storage tank cover 9, and finally the fiber-matrix polymer melt is passed through the straight outlet 16 It is directly transported into the subsequent injection molding equipment, thereby completing the full mixing of the fiber and the matrix molten polymer, eliminating the condensation, granulation, drying and other processes of the original method, saving manpower and improving work efficiency.

Claims (7)

1. a fibrous composite agitating device, comprise base, base is fixed with support, is fixed with motor on the right side of support, the rotor of motor is provided with the first drive, it is characterized in that, be fixed with taper material storage tube in the left side of support, described taper material storage tube upper end is provided with storing cover, and described material storage tube covers and is provided with charging aperture, taper material storage tube lower end is provided with straight line discharging opening, and described straight line discharging opening passes base and is fixedly connected with base; The central axis of taper material storage tube is provided with stirring rod, described stirring rod lower end is positioned at straight line discharging opening, in stirring rod/bottom is provided with Reducing screw leaf, the radius of Reducing screw leaf reduces from top to bottom successively along stirring rod axis, stirring rod is provided with main paddle and secondary paddle, described main paddle and secondary paddle are positioned at Reducing screw leaf upper end, described main paddle is rectangle, secondary paddle is right-angled trapezium, the hypotenuse waist of secondary paddle and CONTACT WITH FRICTION parallel with taper storing barrel; Stirring rod upper end is connected with holder pivots through after storing cover, stirring rod upper end is provided with the second drive, described first drive is connected by driving-belt with the second drive, stirring rod internal fixtion is connected with the first heating element heater, described first heating element heater top is provided with electrode slip ring, and taper material storage tube outer wall is fixed with the second heating element heater.

2. according to a kind of fibrous composite agitating device that claim 1 is stated, it is characterized in that, described main paddle is connected with the upper end of Reducing screw leaf, and the horizontal length of side of main paddle equals the upper end radius of Reducing screw leaf.

3. according to a kind of fibrous composite agitating device that claim 1 or 2 is stated, it is characterized in that, described main paddle and secondary paddle are in a plane, and main paddle is equal with the height of secondary paddle in stirring rod.

4. according to a kind of fibrous composite agitating device that claim 1 or 2 is stated, it is characterized in that, described second heating element heater is ring-type, and the second heating element heater horizontal circle is fixed on taper material storage tube outer wall.

5. according to a kind of fibrous composite agitating device that claim 1 or 2 is stated, it is characterized in that, described material storage tube covers and is provided with two charging apertures.

6. according to a kind of fibrous composite agitating device that claim 1 or 2 is stated, it is characterized in that, the first drive and the second drive adopt Chain conveyer to be connected.

7., according to a kind of fibrous composite agitating device that claim 1 or 2 is stated, it is characterized in that, described stirring rod and bracket bearing are rotationally connected.