CN100475503C - Micro-mixing-extrusion-injection molding integrated experimental device - Google Patents

Abstract

An experimental equipment with mixing, extruding-out and injection moulding functions for researching the micro organic high-molecular material is composed of control cabinet, speed-adjustable motor, height regulating handle, plugging unit, mixing chamber, heating jacket, cooling jacket, discharge valve and injection mould. Its advantages are small sizes, low energy consumption and high accuracy.

Description

Micro-mixing-extrusion-injection molding integrated experimental device

technical field

The invention relates to a chemical machinery, in particular to an experimental device integrating micro-mass polymer material mixing-extrusion-injection molding.

Background technique

In addition to the common characteristics of polymer materials such as light weight, easy molding, and wide sources, functional polymer materials can also have special properties such as high mechanical properties, high wear resistance, magnetism, barrier properties, infrared, and ultraviolet absorption. It is an important field of polymer materials research at present. But at the same time, the requirements for its experimental research equipment are also high. At present, the polymer material mixing and molding equipment used in the experimental process generally has single function, heavy equipment, complicated operation, expensive price, large consumption of raw materials, and low precision. High, low degree of electronic and other shortcomings. Therefore, there is a lack of a small-scale mixing and molding integrated experimental equipment suitable for use in laboratories for researching and preparing micro-macromolecule material samples.

Contents of the invention

The purpose of the present invention is to provide a micro mixing-extrusion-injection molding integrated experimental device which is more suitable for laboratory research on polymer materials, especially functional polymer materials. The experimental device integrates the functions of mixing, extrusion and injection molding, and the process is automatically controlled. After mixing, it can be directly extruded and injected to make samples, realizing the continuous operation of the experiment. In addition, the mixing chamber of this experimental device is composed of upper and lower parts. The upper and lower parts adopt a threaded connection structure, which is convenient for disassembly and cleaning. The extrusion die and injection molding die can be replaced at any time as required, and there are many types of molding samples. The mixing head of this experimental device can move axially, and the lower end surface adopts an internal spiral structure, which has axial and circumferential mixing functions, and the mixing effect is remarkable. At the same time, there are reverse threads on the outer periphery of the cylinder to prevent overflow. This integrated experimental device can process many types of polymer materials, with a wide operating temperature range (10°C-500°C), small consumption of experimental raw materials (several grams-a dozen grams), can mix liquids and melts, and has a wide range of uses.

The present invention consists of a speed regulating motor 1, a height adjusting handle 2, a mixing head 3, a guide rail 4, a mixing chamber 5, a support body 6, a discharge valve 7, an injection mold 8, a lifting ejector rod 9, a control cabinet 10, a base 12, The upper part 13 of the mixing chamber, the lower part 19 of the mixing chamber, the supporting plate 14, the heating jacket 15, the cooling jacket 17, the thermocouple 20 and the motor shaft cooling water pipe 21 are formed. The speed regulating motor 1 has an adjustable speed function, and the mixing speed of the mixing head 3 can be adjusted by adjusting the speed of the motor. Rotate the height adjustment handle 2 to adjust the height of the speed regulating motor 1 and the mixing head 3, so that the mixing head 3 is inserted into the upper part 13 of the mixing chamber and the lower part 19 of the mixing chamber for mixing, extrusion and injection operations. The mixing head 3 is a straight rod body with an internal helix structure on the lower end surface, a reverse thread on the outer surface, and a polished and heat-treated surface. The guide rail 4 plays a role in positioning the speed regulating motor 1 and the mixing head 3 when moving up and down, so that the mixing head 3 is kept concentric with the upper part 13 of the mixing chamber and the lower part 19 of the mixing chamber, and the guide rail 4 has a limit function to limit the adjustment. Speed motor 1 and mixing head 3 move up and down to avoid rubbing. The mixing chamber 5 includes a mixing chamber upper part 13 and a mixing chamber lower part 19 , a supporting plate 14 , a heating jacket 15 and a cooling jacket 17 . The unloading valve 7 is a rotary valve. A circular hole with the same diameter as the discharge port is opened on its rod. When the handle of the discharge valve 7 is rotated, the material can be unloaded when the hole on the rod is connected with the discharge port. . The injection mold 8 is composed of upper and lower templates, the mold cavity can be replaced, and various sample preparations can be formed. The lifting ejector rod 9 controls the lifting of the injection mold 8, and can compress the injection mold 8 under the discharge port of the mixing chamber for injection operation. The control cabinet 10 is equipped with a temperature gauge and a tachometer, a speed adjustment knob and a power switch. The mixing chamber is divided into a mixing chamber upper part 13 and a mixing chamber lower part 19, and the upper part and the lower part are threaded, which is convenient for installation, replacement and cleaning inside the mixing chamber. A cooling jacket 17 is installed outside the upper part 13 of the mixing chamber, the lower part 19 of the mixing chamber and the heating jacket 15 to prevent the human body from being scalded by the high temperature mixing chamber during the experimental operation. The lower part 19 of the mixing chamber is equipped with a thermocouple 20 for real-time measurement and output of the temperature of the mixing chamber. In addition, a motor shaft cooling water pipe 21 is installed at the shaft root of the speed-regulating motor 1 to prevent the motor from burning due to heat transfer through the mixing head 3 during the mixing process.

The invention has the characteristics of multi-functional integration, small size, precise design, compact structure, easy operation, low energy consumption, and high degree of electronic expansion. At present, there is no such molding product in China. The integrated experimental device is suitable for mixing and sample preparation of trace polymer materials in the laboratory.

Description of drawings

Fig. 1 is a structural representation of the present invention (front view)

Fig. 2 is a structural representation (side view) of the present invention

Figure 3 is a schematic diagram of the cross-sectional structure of the mixing chamber

Figure 4 is a schematic diagram of the structure of the mixing head

In the figure: 1 speed regulating motor, 2 height adjustment handle, 3 mixing head, 4 guide rail, 5 mixing chamber, 6 support body, 7 discharge valve, 8 injection mold, 9 lifting ejector rod, 10 control cabinet, 11 cooling water pipe , 12 base, 13 upper part of mixing chamber, 14 pallet, 15 heating jacket, 16 asbestos gasket, 17 cooling jacket, 18 cooling water pipe, 19 lower part of mixing chamber, 20 thermocouple, 21 motor shaft cooling water pipe, 22 motor shaft, 23 mixing chamber Inner helix structure on the lower end surface of the refining head

The overall height of the present invention can be 500-600, the size of the base is 300×300, and the size of the mixing chamber is 100×100. The inner diameter of the mixing chamber is Φ20, the depth is 55, and the inner wall roughness is 0.8. It adopts No. 45 carbon steel and modulates HB220-260. The inner diameter of the reverse thread of the mixing head is Φ17, the length is 60, and the outer surface roughness is 0.8. It is quenched with 40Cr and nitrided. The lower part has an internal spiral structure. The inside of the cooling jacket is made of coiled copper tubes.

Detailed ways

Adjust the speed knob to "0", turn on the power of the host, set the operating temperature (10°C--500°C), and preheat for 30 minutes. After the temperature is reached, check whether the discharge valve is closed, weigh an appropriate amount of experimental raw materials, put them into the mixing chamber from the top of the mixing chamber, turn the height adjustment handle to press down the mixing head, so that it is inserted into the mixing chamber and contacts the materials. Adjust the speed knob to the required speed to start mixing, and pull the mixing head up and down. After the material is completely melted and mixed evenly, open the discharge valve and turn the height adjustment handle at the same time to press the mixing head down to extrude the material sample. .

Claims (8)

1. microscale mix-extrude-injecting formation integrated experimental device, it is characterized in that: this experimental provision contains: rotating speed is adjustable, and buncher moving up and down (1), be used to regulate buncher (1) height regulating handle (2), have the mixing refining head (3) that reverse thread and end face have the inward turning helix structure, have mixing chamber (5), discharge valve (7), liftable and the replacing of heating and cooling system injection molding (8), lifting push rod (9) and can A.T.C and the switch board (10) of rotating speed.

2. microscale mix-extrude-injecting formation integrated experimental device according to claim 1 is characterized in that: moving of buncher (1) limited by guide rail (4).

3. microscale mix-extrude-injecting formation integrated experimental device according to claim 1 is characterized in that: mixing chamber (5) is by hybrid chamber top (13), and hybrid chamber bottom (19), heating jacket (15), coolant jacket (17) is formed.

4. microscale mix-extrude-injecting formation integrated experimental device according to claim 1 is characterized in that: inward turning helix structure (23) is adopted in mixing refining head (3) lower surface.

5. microscale mix-extrude-injecting formation integrated experimental device according to claim 1 is characterized in that: injection molding (8) is supported and liftable and replacing by lifting push rod (9).

6. microscale mix-extrude-injecting formation integrated experimental device according to claim 3 is characterized in that: have spacing up and down on the guide rail (4).

7. microscale mix-extrude-injecting formation integrated experimental device according to claim 4 is characterized in that: hybrid chamber top (13) and hybrid chamber bottom (19) are by threaded connection detachable.

8. microscale mix-extrude-injecting formation integrated experimental device according to claim 4 is characterized in that: coolant jacket (17) is coiled to form by cooling water pipe (18).

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